Cartridge, the cam element to it and a method of manufacturing a cam element

 

(57) Abstract:

The cartridge, which is designed for use with manual or electric drive and contains a nut mounted for rotation on the Chuck body and screw on the thread jaws of the Chuck. Various configuration items Cams cartridge, such as his profile external fitting, obtained by selective redistribution of the metal. Forming Cams cartridge specified is different from the manufacture of Cams using known machining technology in the structural orientation of the grain in the metal. Forming Cams cartridge mainly occurs at low applied temperature not exceeding 1000oFahrenheit. The technical result is expressed in a substantial saving of metal during the shaping of the Cam holder with providing relatively greater precision convergence of the jaws when gripping the shaft of the tool. 5 C. and 13 C.p. f-crystals, 16 ill.

The present invention relates to the creation of cartridges that can be used to drive devices (actuators) drills and other tools.

Well-known drive devices of various types, including: the first tool, used with drives, is a spiral drill, as instruments can also be used screwdrivers, wrenches, small cutters, mounted grinding wheels and other cutting or grinding tools. Because the tools can have shanks of different diameters or cross-section of the shank may be polygonal, the device is usually provided with a cartridge, which is adjustable over a relatively wide range. The cartridge can be connected to the actuator by means of a threaded or tapered holes.

Already known for a variety of cartridges. Chuck one form used three Cam spaced from each other circumferentially approximately 120o. These Cams are enshrined in the running angle of the passages in the housing associated with the output drive shaft. These passages are configured such that rotation of the housing in one direction relative to the fixed nuts that go Cams, encourages Cams to capture (clamping) of the cylindrical shaft of the tool. Rotation of the housing in the opposite direction relative to the fixed nut loosens the clamp jaws.

This patr such a cartridge is disclosed in U.S. patent N 5348317.

The corresponding Cams these cartridges contain mainly inclined surface bounding a "sponge" to capture the shaft of the tool. In accordance with the known state of the art, the sponge is made by milling or grinding of the workpiece metal, having a length, mainly equal to the final length of the Cam. Although this technique usually yields acceptable Cams, it is not without some drawbacks. For example, as sponge form metal removal, the initial preparation has a metal volume substantially greater volume of metal ready Cam. In conditions of mass production costs associated with the removal of metal, can be significant. Moreover, the operation of the milling or grinding, which is used for the manufacture of sponge should be relatively accurate to ensure proper convergence of the jaws to grip the shaft of the tool. In this regard, milling or grinding can cause problems in the manufacture of ammunition.

The present invention is created taking into account the above considerations and with the use of previously known structures and methods. In connection with this, the main task of this which is the creation of a cartridge, uses Cams and a piece of sponge, which is not formed by milling or grinding.

Another object of the present invention is to provide a Cam with a piece of sponge, which was established managed electoral redistribution metal.

Another object of the present invention is to provide a method of manufacturing a Cam element for use in the specified cartridge.

These and other objectives of the present invention achieved through the creation of a cartridge that is designed for use with manual or electric drive and has a rotating drive shaft and a mainly cylindrical Cabinet element, which has front and rear sections. The rear section includes an axial groove made in it to mate with the drive shaft of the actuator. The front section has executed an axial receiving groove and a lot of educated it goes under the angle of the channels intersecting the receiving groove.

The cartridge further comprises a set of elongated pawls which are mounted slidable in each of the running angle of the channels. Each Cam has a cylindrical section of the shaft with PE surface, bounding the outer side of the Cam. Each Cam also has the characteristic structural orientation of the grain, at least on piece of sponge, which is formed in a controlled manner from one (only) selectively redistributed piece of metal. The cartridge additionally comprises a nut, which is mounted for rotation relative to the housing and can nevinovate on the thread jaws so that rotation of the nut moves the Cams.

The rotary element of engagement with the nut can be connected with it in such a way that its rotation causes the rotation of the nut. In the sample design of this element of engagement with the nut can be a mainly cylindrical sleeve covering the front section of the housing. Mainly, this sleeve on its outer surface may be the site of capture to facilitate its manual rotation. Can be also provided in the rear sleeve covering the rear section of the housing. In the example of construction cartridge additionally includes a thrust bearing ring mounted on the housing, and at least one antifriction bearing located between the nut and pornimage element, designed for use with a cartridge of the type described. This method can include the operation of the initial harvesting of the particular metal. This preparation mainly has the form of a first cylinder of a given length. As more operations are performed with controlled shaping of the workpiece by means of an electoral redistribution metal in the intermediate configuration (shape) of the second given length, which exceeds the first specified length. This intermediate configuration has a main cylindrical section of the shaft, which passes into the conical section. The conical section has a third predetermined length and a maximum diameter at an intermediate location of the workpiece and the smallest diameter at its first end. Then from the conical section with a managed electoral redistribution produce metal forming area of the sponge, which is mainly inclined surface, bounding the outer side of the Cam element. Plot sponge is mainly the second specified length, and the cross-sectional area at certain positions along its axis, mainly equivalent cross-sectional area spalling area of the shaft and a piece of sponge.

In the example method in accordance with the present invention, the annular chamfer formed using managed electoral redistribution metal at the first end of the workpiece previously education intermediate configuration. The facet constrains the first end surface of the workpiece having a given diameter. Mainly conical section intermediate configuration is formed by narrowing to a minimum diameter at the first end of the workpiece, which is mostly equivalent to the specified diameter. Cone area is predominantly characterised by non-linear taper in the form of bullets (bullet-shaped taper).

The annular chamfer may be formed on the second end of the workpiece opposite the first end. Moreover, running at an angle inclined end surface may be formed on the first end of the workpiece by means of a managed electoral redistribution metal. As more operations are performed with controlled reduced diameter section of the shaft to the second given diameter through an electoral redistribution metal.

Primarily, do not use external heating of the workpiece material before it is processed (the/SUP>C) before the operation of the managed molding blanks. These and other objectives, features and aspects of the present invention will be more apparent from the subsequent detailed description, given with reference to the accompanying drawings showing preferred embodiments of the invention.

In Fig. 1 shows a longitudinal view, with a partial tear-out, Chuck in accordance with one embodiments of the present invention.

In Fig. 2 shows the cartridge in expanded form in accordance with the shown in Fig. 1 option.

In Fig. 3 shows a perspective view with the increase of the Cam element, constructed in accordance with the present invention.

In Fig. 4 schematically shows the forming machine with the five parts of the molding, which can be used for the manufacture of the Cam element shown in Fig. 3.

In Fig. 5A shows a perspective view of the workpiece, which can be used as the initial piece of metal for the manufacture of the Cam element shown in Fig. 3.

In Fig. 5B schematically shows the blank of Fig. 5A, which is cut off from the Bay metal wire.

In Fig. 6B shows a matrix used in the machine shown in Fig. 4, to obtain the configuration of the workpiece shown in Fig. 6A.

In Fig. 7A shows a workpiece obtained by molding after the second stage of operation of the machine shown in Fig. 4.

In Fig. 7B shows a matrix used in the machine shown in Fig. 4, to obtain the configuration of the workpiece shown in Fig. 7A.

In Fig. 8A shows a workpiece obtained by molding after the third stage of operation of the machine shown in Fig. 4.

In Fig. 8B shows a matrix used in the machine shown in Fig. 4, to obtain the configuration of the workpiece shown in Fig. 8A.

In Fig. 9A shows another view of a workpiece obtained by molding after the third stage of operation of the machine shown in Fig. 4.

In Fig. 9B shows a workpiece obtained by molding after the fourth stage of operation of the machine shown in Fig. 4.

In Fig. 9C shows a matrix used in the machine shown in Fig. 4, to obtain the configuration of the workpiece shown in Fig. 9B.

In Fig. 10 shows a matrix used in the fifth stage of the work in the machine shown in Fig. 4.

In Fig. 11 shows the increase is down, it is shown in Fig. 4.

In Fig. 11A shows a cross section along the line 11A - 11A of Fig. 11.

In Fig. 12 shown with the increase in the cross-section of the Cam element obtained by molding after the fifth stage of operation of the machine shown in Fig. 4.

In Fig. 12A shows a cross section along the line 12A - 12A of Fig. 12.

In Fig. 13 and 14 show respectively micrograph with a magnification of ten (10) times the axial cross-sectional area of the Cam received in accordance with the present invention, and the corresponding plot of the Cam, obtained previously known way.

In Fig. 15 and 16 are shown, respectively micrograph with a magnification of fifty (50) times the axial cross-sectional area of the Cam received in accordance with the present invention, and the corresponding plot of the Cam, obtained previously known way.

Although the present invention describes only the preferred options for its implementation, for professionals it is clear that these options do not limit the present invention in a broad aspect, which is effected in these preferred designs.

Let us now turn to consider kotoryj aspects of the present invention. The cartridge 10 in this respect represents the only example of a typical cartridge, which can be improved in accordance with the present invention. Therefore, it should be borne in mind that the present invention is not limited to the working configuration shown in the drawings, the cartridge, and aspects of the present invention is applicable to both the key and Keyless chucks different working configurations.

The cartridge 10 includes a front shell 12 and possibly (not necessarily) the rear sleeve 14, Cabinet element 16 and a lot of Cams 18. As shown in the drawings, Cabinet element 16 has a mainly cylindrical shape and contains a forward or front section 20 and tail or rear section 22. In the forward section 20 of the body element 16 has an axial receiving groove 24. The size (diameter) of the receiving groove 24 is slightly larger than the largest tool shank that can be clamped in the Chuck 10. In the tail section 22 of the housing 16 is formed with a threaded hole 26, which has a standard size to mate with the output drive shaft, which will be used Chuck. Holes 24 and 26 can communicate with each other in the Central part 28 of the body element 16. Although is to mate with a tapered drive shaft.

In the hull element 16 is formed of multiple channels 30 to enter in each of them corresponding to the Cam 18. Mainly in the cartridge 10 used three (3) such channel 30, and in this construction each passage is separated from the adjacent arc of approximately 120o. The axis of the channels 30 and installed in them Cam 18 is inclined relative to the axis of the Chuck and intersect the axis of the Chuck in one (common) point before the body element 16 of the Chuck.

Each Cam 18 has side 32 of the input tool, which is mainly parallel to the axis of the cartridge housing 16. Each Cam 18 additionally has threads 34 on its outer surface, which is located opposite the entry side 32. In the framework of the present invention can be used with threads 34 of any suitable type and pitch that can be easily understood by experts in this field.

In the given sample design Cabinet element 16 further comprises a thrust ring 36, which, in accordance with a preferred variant of the present invention, can be performed with them as a whole. As shown in Fig. 2, the retaining ring 36 has a stubborn side 38. Persistent side 38 includes an arcuate seat area for useby many elements 42, shown here as balls. It should be borne in mind that the thrust ring 36 has lots of guide channels for the Cams 44, which are distributed around the perimeter of the ring for possible involvement through their respective Cams 18.

The cartridge 10 also includes a nut for mating with threads 34 on the Cams 18. During the rotation of the nut relative to the housing 16 Cams 18 on the desire will be to extend or retract. Despite the fact that within the framework of the present invention can be used nuts of various configurations shown in the drawings, an example of construction of the cartridge used split nut with a semicircular sections 46 and 48. As shown in Fig. 2, the semicircular sections 46 and 48 have corresponding threads 50 and 52 at their inner annular surface. To hold the sections 46 and 48 together in the form of an annular nut, when the cartridge 10 is assembled, is provided by the retaining ring 54. It should be borne in mind that the nut is in the form of a single part, or any other suitable configuration can also be used to solve this problem.

In the illustrated exemplary construction, the front sleeve 12 is made so that it loosely covers the nose section 20 of the housing 16. Front sleeve 12 with Eritrea sleeve 12 and the nut are in working engagement, if the front sleeve 12 is rotated, the nut will rotate with it.

In the illustrated exemplary construction, the front sleeve 12 includes a circular part of the ledge 60, which rests on the ledge 62 at the base of the nose portion 20 of the housing 16. The nose piece 64 is placed on the forward portion 20 behind the ledge 60 to hold in place the front sleeve 12. In this case, the dimensions of the nasal part 64 is selected so that it can be pressed onto the nose portion 20. It should be borne in mind that in some cases the nose piece 64 can be fixed by a fit swage, thread, etc.

As described earlier, the Cams cartridge is usually made by milling or grinding cylindrical "billet". When such technology was required that the length and diameter of the workpiece at least match these dimensions for a Cam, which must be made. In the formation of the side gears and other elements of the Cam large amount of metal is in the chips.

We now turn to a consideration of Fig. 3, showing the Cam element 66, made in accordance with the present invention; after cutting it threads the floor is in the area of the sponge 70. Mostly inclined surface 72 of the plot sponge 70 restricts the direction of engagement, such as shown in Fig. 1 and 2, the side 32. In the shown embodiment, the side gear has a configuration in a direction transverse axis, similar to the letter "W". However, it should be borne in mind that, in accordance with the present invention can be obtained, and other appropriate configuration, such as in the form of the letter "V".

On the rear end of the element 66, adjacent to the area of the shaft 68 may be made annular chamfer 74. On the opposite front end of the element 66 has an end surface 76. The end surface 76, as shown in Fig. 3 can be tilted so that the surface 72 has an axis of greater length than the rear arcuate side 78 of the plot sponge 70. Resulting from the use of this inclined orientation of the end surface 76 will be approximately perpendicular to the longitudinal axis of the cartridge 10 after you install a Cam in it.

The Cam element 66 shown in Fig. 3 obtained by forming at this stage of the main cylindrical workpiece without removing metal. In other words, different shown in Fig. 3 constructive characteristics, is implemented molding" of the workpiece. In this process, the workpiece material selectively redistributed so as to obtain the structural parameters.

We now turn to a consideration of Fig. 4, which schematically shows the forming machine (in the General form indicated by position 80), which can be used for the managed production of the Cam element 66 shown in Fig. 3. As explained in more detail later, the machine 80 contains many sections of the molding, which sold various design aspects when forming element 66. In accordance with a preferred variant of the present invention, the machine 80 includes five (5) areas of the molding. There are five (5) mechanisms of capture or transfer 82 to move the workpiece from one segment to another.

Machine 80 includes the first node 84 and the second node 86 having a flat surface located opposite each other. In this case, the second node 86 is able reciprocating movement relative to the node 84, as shown by the arrow 88. In Fig. 4, each of the sections of the molding shown in the form of a cavity 90 on the side 92 of the node 84 and the corresponding punch 94 protruding from the opposite state this procurement tends to take the form of a matrix, located inside the node 84 to a corresponding site of formation.

It should be borne in mind that the car 80 there are many areas of the molding, so that the element 66 may be formed with the implementation of a set of consecutive stages (stages) of manufacture. This technology is used because the attempt molding element 66 of the main cylindrical workpiece in a single step is often extremely difficult. When forming element 66 in separate steps, you can get adequate and effective managed molding. Mainly, in each area of the bending machine 80 during movement of the node 86 in the direction of the node 84 has one piece. Thus, in the molding process involves a number of blanks equal to the number of sections forming, which increases production efficiency.

The following describes the various stages of formation for receiving the workpiece element 66. In Fig. 5A shows a cylindrical workpiece 96, which can be used to obtain the Cam element 66 in accordance with the present invention. As shown in Fig. 5A, procurement 96 has a length L1and diameter sufficient for the conclusion of volume of metal, Metallichesky wire by using appropriate means of cutting. Usually workpiece material 96 is steel or suitable steel alloy. For example, it can be assumed that carbon steel with medium carbon content, such as steel with a range of carbon content 38-45 and with some lead content, is suitable for this purpose. However, in the framework of the present invention can also be used with other suitable metals or related materials.

We now turn to a consideration of Fig. 6A, which shows that at the first stage of operation of the machine 80 annular chamfer 102 is formed by forming on the leading end of the workpiece 96. Chamfer 102 limits the round end surface 104 with a diameter of D1. Chamfer 102 may be formed in a controlled manner when entering the workpiece 96 in complementary matrix 106 of the host machine 80 84 by means of the plungers 94, as shown in Fig. 6V. You can see that at this stage, the workpiece 96 stores the approximate length L1.

After the formation of the chamfer 102 of the punch 94 is removed. After that, the workpiece 96 can be extracted from the matrix 106 using the eject pin (piston), available inside the node 84. Node 84 has an axial passage 108 so that the ejector may come in contact with a leading end which should be borne in mind, as in other parts of the bending machine 80, except for the final section, in many cases, are also commonly used pullers to remove the workpiece 96 of the corresponding matrix.

The shape of the workpiece 96 after the second phase of the operation of the machine 80 is shown in Fig. 7A. You can see that the workpiece 96 in its intermediate configuration extended to length L2that is mostly greater than the length L1. In this case, the workpiece 96 comprises a cylindrical section of the shaft 110, which passes into the conical section 112. You can see that the diameter of the conical section 112 gradually decreases in the direction of the end surface 104, the diameter of which is predominantly remains equal to the value of D1after implementation of this stage-managed molding.

Mainly conical section 112 has a "bullet shape" with a non-linear taper. As will be explained hereinafter in more detail, the cross-sectional area of the conical section 112 mainly mainly equivalent cross-sectional area desired final element of the Cam 66 in the respective axial locations. This configuration facilitates the formation of a relatively slojnoye intermediate configuration of the workpiece 96 shown in Fig. 7B and marked the position 114.

The configuration of the workpiece 96 after the implementation of the third stage of operation of the machine 80 is shown in Fig. 8A. You can see that on the conical section 112 formed plot sponge 116. Plot sponge 116 contains mostly inclined surface 118, bounding the outer side of the Cam desirable configuration. The back part of the plot sponge 116 has a configuration curved surface 120. It should be borne in mind that the semicircular surface 120 is essentially the same radius as the area of the shaft 110, and is mainly a continuation.

End surface 104 is transformed into the end surface 122, which is shown in Fig. 8A configuration. For reasons which will be explained hereinafter, the end surface 122 has a circular configuration, but nevertheless has a surface area equivalent to that of the end surface 104. At this stage, the workpiece 96 has a length L3. This length L3that may exceed the length L1mainly mainly equal to the final length of the element 66. The corresponding matrix for forming the workpiece 96 at this stage is shown in Fig. 8B and the indicated position 124.

The configuration of the workpiece 96 after the implementation of the fourth stage of operation of the machine 80 is shown in Fig. 9B. You can see that the leading end no Burr 126 and has an annular chamfer 128. In addition, the end surface 122 of Fig. 9A transformed into an inclined end surface 130.

In Fig. 9C shows a matrix suitable for use in the implementation stage of the processing of the workpiece 96, shown in Fig. 9B. It should be borne in mind that the workpiece 96 should not have unwanted rotation in the capture mechanism 82 when moving from the third section forming the fourth section, in order to ensure proper alignment of the plot sponge 116 matrix 132.

Inclined end surface 132 may be formed using a complementary surface on the ejector pin 133, which is primarily shown in Fig. 9C position after entering the workpiece 96 in the matrix 132. Moreover, for forming the chamfer 128 matrix 132 is configured such that the area art, that it has a recess 136, which is mainly complementary to the chamfer 128. Therefore, when the input end of tube 96 in the recess 136 produces the desired chamfer 128.

In the fifth stage of operation of the machine 80 and the workpiece 96 receives final dimensions. In particular, the workpiece 96 mainly passed through the opening 138 having a section of reduced diameter 140. Inner diameter section 140 mainly mainly equal to the desired outside diameter of the element 66. As a result, after passing the workpiece through the opening 138 of the workpiece 96 receiving element 66 shown in Fig. 3.

We now turn to a consideration of Fig. 11 and 12, with reference to that explained a significant aspect of the present invention. In particular, in Fig. 11 shows an intermediate configuration of the workpiece 96 after the implementation of the third stage of operation of the machine 80. You can see that the length of the conical section 112 from the end surface 104 to the place where begins the section of the shaft 110, is equal to L4. In Fig. 12 shows the element 66 received after discussed above fifth stage of molding. You can see that the length of the sponge 70 is mainly also equal to L4. Thus, a given axial location is="ptx2">

As shown in Fig. 11A and 12A, the cross-section in these respective axial locations have different geometrical configuration. Despite this, the cross-sectional area of the element 66 and the workpiece 96 in these respective axial locations will be mostly the same and equal to the area A.

Found that compliance areas useful for the controlled formation of relatively complex shape of the plot of jaws 70 of the workpiece, which is symmetric about the axis. For example, try the direct molding of the plot of jaws 70 of the cylindrical workpiece can lead to "stuck" in the matrix. In accordance with the present invention it is possible to avoid such a "sticky" and effectively to produce the plot sponge 70 by providing a conical section 112 having an equivalent area of cross-sections in the respective axial locations. This configuration allows for efficient allocation of the metal inside the matrix.

An important aspect of the present invention is the temperature at which it can be molded element 66. In particular, the element 66 may be formed at a temperature which is substantially below temperatures with an applied temperature, which mostly does not exceed 1000oFahrenheit. Often it may be desirable to produce a controlled molding at room temperature, although it should be borne in mind that the friction when moving the metal will create an internal temperature rise. In some cases it is desirable to produce external heating of the material previously its formation. The optimum temperature in this situation will depend on the specific material, but generally will not exceed 1000oFahrenheit. These relatively low temperatures are desirable, since at higher temperatures, such as, for example, which are used in hot forging, can occur shrinkage of the workpiece 96.

In Fig. 13 and 14 show respectively micrograph axial cross-sectional area of the Cam received in accordance with the present invention, and the corresponding plot of the Cam, obtained previously known method of machining. Micrograph obtained with increase of ten (10) times. You can see that the structural orientation of the grain of the Cam, obtained by machining, is essentially completely axial. On the other hand, it can be seen that structural orie the RNO is focused differential and its orientation is mainly directed parallel to the sloping surface.

In Fig. 15 and 16 are shown, respectively micrograph with a magnification of fifty (50) times the axial cross-sectional area of the Cam received in accordance with the present invention, and the corresponding plot of the Cam, obtained previously known method of machining. In particular, these micrographs shows the section of the "W" of the Cam surface. You can see that the metal grain of the Cam, obtained by machining, focused mainly orthogonal to the plane of the micrograph. In other words, the orientation of the grain is "inside" micrograph along the line of sight of the observer. On the other hand, it can be seen that the structural orientation of the grain of the Cam received in accordance with the present invention, to a certain extent corresponds to the configuration of the outer surface.

Despite the fact that have been described the preferred methods and embodiments of the invention, it is clear that it specialists in this field can be amended and supplemented, which do not extend, however, beyond the scope of the following claims and are consistent with its spirit. In particular, it should be borne in mind that aspects of the various options osushestvljali is easy to see the above description is given only as an example and does not limit the patent claims, the amount of which is established in the claims.

1. Cartridge designed for use with manual or electric drive with mounted rotatably to the shaft, and comprising mainly cylindrical Cabinet element with nut and with the front and rear sections, the rear section is made axial groove serving for coupling the cartridge with the drive shaft of the actuator, and the front section has an axial receiving groove with the formation of multiple channels that are located at an angle relative to the receiving groove and intersecting each of these channels is slidable elongated Cam having a cylindrical section of the shaft is threaded on its outer surface, transforming into a section of sponge having mainly inclined surface, bounding the outer side of the Cam, with the specified nut mounted for rotation relative to the body element on the threaded Cams with ensuring the operation of the latter, characterized in that the material of each of the Cam has a structural orientation of the grain, at least on the site ptx2">

2. Chuck under item 1, characterized in that it further comprises a rotary element of engagement with the nut, which is connected with it with the possibility of transmission of nut rotation.

3. Chuck under item 2, wherein the specified element engagement with the nut is a mainly cylindrical sleeve that is installed with the possibility of covering the front section of the body element.

4. Chuck on p. 3, characterized in that the sleeve on its outer surface is the site of capture to facilitate its manual rotation.

5. Chuck under item 4, characterized in that it contains a back sleeve that is installed with the possibility of covering the rear section of the body.

6. Chuck on p. 3, characterized in that it contains a thrust bearing ring mounted on the hull element and at least one antifriction bearing located between the nut and thrust ring.

7. A method of manufacturing the Cam element to the cartridge, designed for use with manual or electric drive and have installed with the possibility of rotation of the drive shaft, characterized in that from a certain material receive the workpiece, with the main obrasrealizadas the workpiece material in the intermediate configuration of a second given length, exceeding the first specified length and specified intermediate configuration has a mainly cylindrical section of the shaft, turning into a conical section having a third predetermined length and a diameter decreasing in the direction of the first end of the maximum diameter in an intermediate location on the plot near the cylindrical section of the shaft, followed by forming by selective redistribution of the material of the conical section specified intermediate configuration in the plot sponge Cam having mainly inclined surface, bounding the outer side of the Cam, resulting in a gain of a Cam element having a shaft section and the portion of the sponge.

8. The method according to p. 7, characterized in that the piece of sponge is mainly a third predetermined length, the cross-sectional area at this site along an axis, mainly equivalent cross-sectional area of the conical section in the appropriate locations along the axis.

9. The method according to p. 7, characterized in that the conical section specified intermediate configuration has a bullet-shaped nonlinear taper.

10. The method according to p. 7, characterized those who second given length perform the operation of managed forming an annular chamfer at the first end surface of the workpiece, having a given diameter, by selective redistribution of metal.

11. The method according to p. 7, wherein the tapered section is formed during the operation of the electoral redistribution of material in the intermediate configuration of a second given length, with the specified plot form tapering to a minimum diameter, which is mostly equivalent to the specified diameter at the first end of the workpiece.

12. The method according to p. 7, characterized in that it includes the operation of the managed reduction of the diameter of the shaft section to the second given diameter by selective redistribution of metal.

13. The method according to p. 7, characterized in that the workpiece is heated to a temperature not exceeding 1000oFahrenheit during the operation of the managed molding blanks.

14. The Cam element to the cartridge, designed for use with manual or electric drive and having a rotating drive shaft, characterized in that the Cam element is made in accordance with the method according to p. 7.

15. The Cam element to the cartridge, designed for use with manual or electric drive and having a rotating leading narujnoy surface, while the section of the shaft turns in the plot sponge with mainly inclined surface, bounding the outer side of the Cam, wherein the material of the Cam element has the characteristic structural orientation of the grain, at least on piece of sponge, which is managed by the image obtained by the selective redistribution of material.

16. A method of manufacturing the Cam element to the cartridge, designed for use with manual or electric drive and having a rotating drive shaft, characterized in that from a certain material receive a cylindrical workpiece, carry out a managed forming by selective redistribution of material from receiving an annular chamfer at the first end of the specified workpiece, and then carry out a managed forming by selective redistribution of material in the intermediate configuration having a mainly cylindrical section of the shaft, integrally turning into a conical section having a maximum diameter in an intermediate location on the workpiece and the minimum diameter at the first end of the workpiece, followed by guided by forming elect the sponge, having mainly inclined surface, bounding the outer side of the Cam, with the specified area of the sponge has a cross sectional area at specific locations along its axis, mainly equivalent cross-sectional area of the conical section in the appropriate locations along the axis, and then carry out a managed forming by selective redistribution of the material of the inclined end surface at the first end of the workpiece.

17. The method according to p. 16, characterized in that the conical section specified intermediate configuration has a bullet-shaped nonlinear taper.

18. The method according to p. 16, characterized in that the workpiece is heated to a temperature not exceeding 1000oFahrenheit during the operation of the managed molding blanks.

 

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2 dwg, 1 ex

FIELD: technological processes.

SUBSTANCE: invention relates to the field of metal plastic working and may be used to make stamp forged pieces of complex configuration of crosspiece type. Stock is heated up to forging temperature. Then it is placed on end of pusher in upper matrix. Upper matrix is installed on traction rods at the distance from lower matrix mounted on lower plate of stamp, smaller than stock height. Further matrices are pressed by means of forged piece forming effort. This effort is taken off pusher in process of stamping and is applied to upper matrix in direction of puncheon action.

EFFECT: invention provides for improved quality of forged pieces of crosspiece type.

1 ex, 3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to ammunition for small arms, primarily, to bullet armor-piercing cores. Proposed method comprises head multiple forging and annealing. First, taper is formed by punch to provide constant working cavity taper angle unless point with diameter making 0.25 of core diameter is formed. Then, heading tool is used to head said point and to mate two tapers. Annealing is carried out many times after every forging.

EFFECT: higher hardness of core, longer life of tool.

3 dwg, 1 ex

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming. Proposed die comprises top and bottom halves, swaging site, blocker and finishing impression. Both blocker and finishing impression are closed and provided with compensators. Said blocker features height exceeding the of finishing impression by h=5.9-0.04,(Dout1 -Din2), where h is excess height of blocker in every die half; Dout1 is diameter of circle inscribed along outer contour of bed contour for finishing impression ribs; D in2 is diameter of circle inscribed in contour of bed for ribs. Blocker zone for rib crests is shaped to radius equal to where R is blocker section spherical radius in said zone.

EFFECT: decreased metal input, higher durability.

4 dwg

Swaging equipment // 2465977

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly, to swaging equipment. Proposed equipment comprises insert bottom holder with bottom female die and insert top holder with top female die. Female dies form circular swaging cavity. To limit lateral part displacement in hop up from bottom female die, guide appliance is used. Said guide appliance may represent a column arranged inside ring formed by annular swaging cavity. Column height equals that of ring part hop.

EFFECT: higher safety, reduced risks of damaging parts, possibility to use higher-power swage.

10 cl, 3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to production of rings. Initial material is cut into preset-length sections. Then, cutout is made in initial material over its length to produce a blank. Said blank is fitted in the tool. Then, cutout is expanded by forcing male die into blank and applying contracting force to blank ends. Said cutout is expanded unless round blank is obtained.

EFFECT: higher quality.

5 cl, 9 dwg

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