Cutter, particularly cutter with round shank

FIELD: process engineering.

SUBSTANCE: invention relates to cutter, particularly, to cutter with round shank comprising cutter head and cutter shank. Note here that fastening bush is retained in the cutter shank zone while said cutter is equipped with thrust element with guide zone. In compliance with this invention, for ease of cutter handling, said thrust element has deflecting section arranged in its zone opposite the cutter head bottom. Said section adjoins the guide zone to allow fastening bush to change from unlocked position to locked position of from partially locked position to locked position. Note also that guide zone extends through rounded flare to aforesaid thrust surface.

EFFECT: perfected design.

13 cl, 6 dwg

 

The invention relates to a cutter, in particular the picks that contain the pick head and the shank of the cutter, and in the area of the shank of the cutter is kept mounting sleeve, and a support member that has a guide in the area.

This cutter is known from DE 3701905 C1. This mounting sleeve is made in the form of a clamping sleeve, which is made of elastic material, for example sheet steel. She has a longitudinal slot which is limited by the edges of the sleeve. Using longitudinal slot, you can change the diameter of the mounting sleeve, the edges of the sleeve are moved towards each other (small diameter) or are located at a distance from each other (large diameter sleeve). Thus, it is possible to provide various States of clamping. In the mounting sleeve worn performed as washers wear protection supporting element. This supporting element has a circular cross-section and is penetrated by the hole. The opening shall be of such dimensions that the mounting sleeve is held in a state of pre-compression with reduced relative to its not compressed state outer diameter. Created so the outer diameter is selected so that the clamping sleeve can push with the application of a small force or without force in the slot of the cutter holder. The movement of the lower limited by pornog the item. Upon further insertion of the shank of the cutter in the hole supporting element is moved in not surrounded by a clamping sleeve area of the shank of the cutter. Then the mounting sleeve is expanded in the radial direction and clamped in the toolholder bore. This eliminates the loss of the picks in the axial direction, however, it is held with the possibility of free rotation in the circumferential direction. For disassembly of the cutter is pushed out of the slot cutter with acting on the rear side of the shank of the cutter bit.

There are cases in which the cutter when it is partially worn, can no longer be used for specific tasks milling. In this case it is removed, and installed new, never worn pick. However, partially worn cutter is suitable to perform tasks more rough treatment. However, since the supporting element is already shifted from the mounting sleeve, the Assembly becomes more complex. You need to apply a separate clamping tools with which you can pre-compress the clamping sleeve. In this case, the cutter without the application of force to enter into the slot cutter. The clamping tool is removed in a partial state of the cutter, and then the chisel with a hammer to pierce completely in the slot cutter.

From DE 10 2005 042 663 A1 is known a different cutter. PR is also used washer wear protection as a reference element, which holds the mounting sleeve in a state of pre-compression. The support element can be moved in the direction of the head cutter for elastic extension mounting sleeve in the radial direction. Then the support element includes protrusions in the slot of the mounting sleeve, thereby providing support without the possibility of rotation between the mounting sleeve and the supporting member. Such support without the possibility of rotation have the disadvantage that they lead to increased and uneven wear.

In EP 1427913 B1 disclosed a cutter, in which the mounting sleeve can also move the anchor element. The support element is between the cutter head and the free end of the mounting sleeve. The support element has at its facing the fixing sleeve the end of the circumferential flange. By knocking the cutter clamping sleeve can wedge themselves in the flange, through which the clamping sleeve unintentionally dispersed. In this case, complicated dismantling and requires the application of force.

The objective of the invention is to provide a cutter of the specified first kind, which, after the dismantling of the tool holder enables easy re-use.

This problem is solved by the fact that the supporting element in its area facing away from the cutter head, the bottom side has a deflecting section.

When removing the cutter from the slot cutter for the fastening sleeve can be brought into connection with the deflecting section. Due to this mounting sleeve means formed in the guiding zone area of the fixing sleeve. Then the mounting sleeve is again compressed, which provides lightweight disassembly of the cutter from the slot cutter. However, this compressed state can then insert cutter if you re-use the slot cutter without the application of force or with the application of a small force. Preferably, the cutter when the first installation is already configured such that the guide zone holds the mounting sleeve in a compressed state.

According to one alternative implementation of the invention the mounting sleeve by using a deflecting section to transfer from the compressed position to a compressed position. It is preferably, for example, when the supporting element is unintentionally shifted from the mounting sleeve and is in his addressed to the head of the cutter operating position. Then you can just use a deflecting area again to restore the mounting position by slipped on easily support element on the mounting sleeve. Deflecting section may also serve to align the grommets from a partially compressed position to a compressed position. Partially compressed position is usually present when the cutter is mounted in the slot of the cutter and the effect of the residual force is pressing on the wall of the bore slot cutter.

To ensure reliable transfer of the fixing sleeve for deflecting the plot option of execution in which the support element has a zone input, which directly or indirectly enters the deflecting section. In this case, the mounting sleeve can be converted to a reference element of the plot to enter the zone input and through it in the deflecting area. It was found that especially preferably, when provided, that the mounting sleeve has a guide which is held in the zone input. In this case, already in the position of the Assembly is provided spatial coordination of the mounting sleeve relative to the reference element. Due to this overlap between the mounting bushing and a support element occurs labyrinthine castle, which reduces the risk of ingress. Due to this improved characteristics rotation between the cutter and the supporting member. It is also possible that the guide in the axial direction of the cutter is at a distance from the zone input. In this case, the zone input must be of such dimensions that allows reliable input guide in the mounting sleeve during removal. In particular, it should be taken into account due to wear and deformation, for example, the grommets in it facing the supporting element area.

In person is but a preferred embodiment of the invention in the transition zone of the cutter head in the shank of the cutter is centering the plot, which on its outer periphery shaped so that it together with the guide area forms a bearing for the rotation. Bearing rotation allows rotation of the support element independently from the mounting sleeve. Due to this, an optimum relative wear performance of the whole cutter. In addition, with this bearing rotation is provided centered orientation of the cutter relative to the reference element, which leads to improvement of the milling and reduction associated with the rotation of the wear.

The cutter according to the invention can be performed so that the supporting element at its addressed to the head of the cutter upper side of the extension is input, which directly or indirectly enters into the guide zone. This extension input facilitates initial Assembly of the cutter. The shank of the cutter first skewer mounting sleeve. Then not compressed by the mounting sleeve and pushes the supporting element, the extension of the input serves as a support for the introduction.

A particularly simple design is obtained due to the fact that the guide zone and the injection zone is formed in each hole, and that the forming area of the input aperture has a larger diameter than the forming the guide hole area.

Important criterion for the design of the cutter is, as mentioned above, the optimal the real relative wear performance. If this should occur as less wear on the expensive tool holder, in which the inserted cutter. Therefore, preferably, when the reference element leads to the minimum rotational wear of the tool holder. However, at the same time the cutter should rotate so that it is evenly worn across its circumference. To ensure this, in one embodiment, the invention can be provided that the support element on its upper side has a recess in which is addressed to her area of the cutter head and the cutter head with its contact surface rests on the supporting surface of the recess. Notch and turned to her area of the cutter head to form a labyrinthine castle, which prevents the penetration of the cutting material. Thus, still a good rotation of the cutter relative to the reference element. It was found that when the support element is fixed without the possibility of turning relative to the tool holder, it is due to shock loads may unevenly vrabatawatisa addressed to him in the surfaces of the tool holder, which is a disadvantage. So should remain a relative movement of the support element relative to the tool holder. To achieve this supporting element is in its Les is away outside in the radial direction of the ring zone according to a variant implementation of the invention provided with grooves. These notches form a nip for cutting material, which then enters into the support element circumferential force. Thus, it is called the rotational movement of the support element. Centered orientation of the support element relative to the tool holder is achieved in that the supporting element has on its lower side centering collar. He can enter the centering socket holder. Between the centering flange and centering nest again formed a kind of seal that prevents the penetration of the cutting material. This more optimal relative wear performance of cutter is achieved when stipulates that the centering flange is held inclined relative to the Central longitudinal axis of the cutter centering surface which is displaced back through the notch goes into passing radially to the Central longitudinal axis of the circumferential surface of the landing. Shifted back notch forms a sort of relieve tension recess. Additionally, this notch releases the corresponding area of the edge of the tool holder, which leads to improvement of free rotation.

The cutter according to the invention can be characterized by the fact that the mounting sleeve has one or more retaining elements, which are included in the ring groove of the shank of the cutter DL the education support rotation. This provides the possibility of free rotation of the cutter relative to the mounting sleeve in the circumferential direction. Especially preferably, when provided, that the holding elements selected from the mounting sleeve along two passes in the circumferential direction of the separation edges, and that the dividing edge of the holding elements are each opposite lateral walls of the groove. The retaining elements can very accurately be stamped from the material of the sleeve and to agree with the width of the grooves. This slight axial clearance of the shank of the cutter relative to the mounting sleeve. Dividing edges form depending on the position of the cutter linear edge adjoining unto them side walls of the grooves. It provides the exact direction of the shank of the cutter, resulting in improved characteristics of the rotation.

Below is a more detailed explanation of the invention on the basis of an exemplary embodiment with reference to the accompanying drawings, which depict:

Fig. 1 - cutter prepared in the initial position;

Fig. 2 - cutter according to Fig. 1, in the installation position, side view;

Fig. 3 is a detail III of Fig. 2;

Fig. 4 is shown in Fig. 1-3 supporting element, in isometric projection;

Fig. 5 is shown in Fig. 1-3 cutter in its mounting position on the cutter is ersatile, side view;

Fig. 6 is a detail VI from Fig. 5.

In Fig. 1 shows the cutter 10, which is made in the form of a pick. It has a shank 11 of the tool, which has an essentially cylindrical shape. In the shank of the cutter is made circumferential groove 15. The shank 11 of the cutter through the centering section 12 is connected with the cutter head 13. The cutter head 13 has on its facing away from the shank 11 of the cutter end of the top 14 of the cutter, consisting of a rigid material such as hard alloy. To do this, the head 13 of the cutter-side end formed glass that are soldered in the top 14 of the cutter. As shown in Fig. 1, the cutter head 13 is in the connection zone with the centering section 12 shoulder 13.2. Shoulder 13.2 forms a directed downwards surface 13. 1 is tight. The cutter 10 with its shank 11, a head 13 and a top 14 is in the form of a body of rotation is symmetric with respect to passing through the top 14 of the cutter median longitudinal axis. In the area of the shank 11 of the cutter is mounting sleeve 20. The mounting sleeve 20 is made from a flat material, for example sheet steel. Of flat material cut with a stamp holding elements 21 and extruded surrounded by the fixing sleeve 20 zone. While retaining elements 21 are cut along the two edges of the stamping, which run in the circumferential direction of the fixing sleeve 20. Fastening the flanged sleeve 20 is folded so that which is formed a circular cross-section, leaving slot 23 for compressing.

In the mounting sleeve 20 nadenut supporting element 30. The support element 30 is made in the form of washers. Explanation of the execution of the support element 30 described below with reference to Fig. 3. As shown in Fig. 3, the support element 30 has on its face the head of the cutter side of the Cup-shaped recess 31, which may be installed in the cutter head 13 his shoulder to 13.2. The crown 13 of the cutter surface 13.1 fit flat lies on toward her support surface 31.1 recesses 31. On facing the recess 31 of the support element 30 has a landing surface 33, which is arranged plane-parallel bearing surface 31.1. This landing surface 33 passes through the notch 35 in the centering flange 34. This recess 35 is made in the form of undercut, to ensure optimal voltage transition. Adjacent to the recess 35 of the centering surface of the centering flange 34 is inclined relative to the Central longitudinal axis of the cutter 10 and is the same as the landing surface 33 koltseobrazno about the mid-longitudinal axis of the cutter 10.

In addition, as shown in Fig. 3, the supporting element is made of a Central hole, which forms a guide zone 36. This guide zone 36 passes through the rounded is made about the extension 36.3 input bearing surface 31.1. The guide zone 36 adjacent facing the expansion 36.3 input deflecting section 36.1. While deflecting section 36.1 formed by the slope, which is inclined relative to the Central longitudinal axis of the cutter 10, respectively, the average of the longitudinal axis of the support element 30. This bias can be formed in a linear plot or a curved section. To the deflecting section 36.1 adjacent area 36.2 input. Area 36.2 input, in turn, is formed by a hole, the hole diameter larger than the diameter forming the guide zone 36 holes. Through the deflecting section 36.1 area 36.2 input goes into the guide zone 36.

In the installation position, which is shown in Fig. 2 and 3, the head 13 of the cutter is inserted his shoulder 13.2 in the recess 31 of the support element 30. This centering section 12 of the shank 11 of the cutter aligned with the guide area 36. Thus, between the guide area 36 and the centering section 12 occurs bearing rotation. It should be noted that the outer diameter of the cylindrical centering section 12 is aligned with the inner diameter of the guide zone 36 that there is a possibility of free rotation between the support element 30 and the centering section 12. The gap between these two structural elements must be chosen so that there is minimum side the offset is s (average across the longitudinal axis of the cutter 10).

In Fig. 3 shows that the shank 11 of the cutter has an area of 12.1 rounding, which forms the transition from the shank with a reduced diameter to the area with the increased diameter of the centering section 12. In the zone with a reduced diameter is mounting sleeve 20. In his facing the supporting element 30 end area of the fastening sleeve 20 forms a trailing guide 22. This guide 22 ends with a chamfer 22.1. In the mounting position of the guide 22 is located in the zone 36.2 input. When this agreement is executed so that between the outer wall of the fixing sleeve 20 and the area 36.2 input remains a gap. This gap should be selected more clearance between the centering section 12 and the guide area 36, so that in the mounting position prevents contact between the mounting sleeve 20 and the supporting member 30. Thus, in this case, the centering section 12 and the guide zone 36 some form of support rotation.

In Fig. 4 again shown separately supporting element 30. As shown in Fig. 4, the recess 31 is limited by a circumferential edge 31.2, in which are formed the notches 32. This recess 32 is made in the form of passing in the radial direction of the grooves. In Fig. 4 shows also that the supporting element 30 is made in the form of a body of rotation, symmetric about its median longitudinal axis.

In Fig. 5 and 6 shows the agreement of the cutter 10C of the holder 40. As shown in these figures, the holder 40 has a base portion 41, which is formed protruding downward insertion of the protrusion 42. In addition, the base part 41 shall be made in the form of one part of the retention flange 43, which is in the form of a cylindrical hole made socket 46 for cutter. Thus the Jack 46 for cutter made in the form of through holes, which is open at its both longitudinal ends. Through facing the plug protrusion 42 of the end of the slot 46 for the cutter, you can enter a punch (not shown) wybitnego tool. This punch acts on the free end of the shank 11 of the cutter. Opposite the plug protrusion 42 of the end of the slot 46 to the cutter enters the cylindrical section 44 of the holding section 43. This cylindrical section 44 has an annular contact surface, which is the landing surface 33 of the support element 30. As shown in Fig. 6, the centering flange 34 of the support element 30 is included with the appropriate form of the centering socket of the tool holder 40.

In addition, in Fig. 6 shows that the expansion 36.3 input support element 30 is made so that freed the corresponding area of the edge between the shoulder and 13.2 centering section 12 (recess 12.2), so still a good rotation of the cutter 10 relative to the support element 30. In addition to the, it is evident from Fig. 6 it follows that the recess 35 releases the corresponding area of the edge of the tool holder 40, so that it is guaranteed flat seal Seating surface 33 to the corresponding support surface of the holder 40.

For disassembly of the cutter 10 can be applied, as mentioned above, the removal tool. This removal tool has a base portion which rests on the front side on the edge 31.2 support element 30. Punch this tool can move back through the slot 46 to the cutter so that it acts on the free end of the shank 11 of the cutter and pushes it out of the slot 46 to the cutter. Reference site eject tool holds the supporting element 30 in its position. Due to this, the guide 22 of the fixing sleeve 20 is shifted in the area of deflecting section 36.1 of the support element 30. Deflecting section 36.1 then compresses formed using the guide 22 the end of the mounting sleeve 20 in the radial direction inside the achieved reduction of the diameter of the fixing sleeve 20, at least in this area. Upon further shifting of the cutter 10 of the fixing sleeve 20 comes with its lateral area in the guide zone 36 of the support element 30. This movement of the shift can be continued so long as will not be achieved, for example, shown in figure 1 the position of the support element 30. Then d is EC 10 can be put forward with the application of a small force or without the application of force from the slot 46 to the cutter. Then it can be used for the new installation.

1. The cutter, in particular a pick, containing the head (13) of the cutter and the shank (11) of the tool, and in the area of the shank (11) of the cutter is held fastening sleeve (20)and support element (30)which has a guide area (36), and the supporting element (30) in its area facing the head (13) of the cutter bottom side has a deflecting area (36.1), characterized in that the deflecting section (36.1) adjacent to the guide zone (36) with the possibility of translation standoffs (20) from an uncompressed position to a compressed position, or from a partially compressed position to a compressed position, with the guide zone (36) passes through the curved executed extension (36.3) input bearing surface (31.1).

2. The cutter according to claim 1, characterized in that the guide zone (36) holds the fastening sleeve (20) in a compressed position.

3. The cutter according to claim 1, characterized in that the supporting element (30) has an area (36.2) input, which directly or indirectly enters the deflecting section (36.1).

4. The cutter according to claim 3, characterized in that the fastening sleeve (20) has a guide (22), which is held in the hot zone area (36.2) input, or a guide (22) in the axial direction of the cutter (10) is at a distance from the zone (36.2) input.

5. The cutter according to claim 1, characterized in that the transition zone of the head (13) re the CA in the shank (11) of the cutter is centering section (12), which on its outer periphery shaped so that it together with the guide zone (36) forms a bearing for the rotation.

6. The cutter according to claim 1, characterized in that the supporting element (30) facing the head (13) of the upper side of the cutter has an extension (36.3) input, which directly or indirectly enters into the guide zone (36).

7. The cutter according to claim 1 or 3, characterized in that the guiding area (36)and area (36.2) input is formed as a hole, and forming a zone (36.2) enter the hole has a larger diameter than the forming guide zone (36) hole.

8. The cutter according to claim 1, characterized in that the supporting element (30) on its upper side has a recess (31), which is addressed to her area of the head (13) of the cutter head (13) of the cutter surface (13.1) seal rests on the supporting surface (31.1) of the recess (31).

9. The cutter according to claim 1, characterized in that the supporting element (30) in his lying radially outside the circular area has a notch (32).

10. The cutter according to claim 1 or 9, characterized in that the supporting element (30) has on its lower side centering flange (34).

11. The cutter of claim 10, wherein the centering flange (34) is held inclined relative to the Central longitudinal axis of the cutter (10) centering surface which is displaced back through the notch (35) goes into passing the Yu radially to the Central longitudinal axis of the ring landing surface (33).

12. The cutter according to claim 1, characterized in that the fastening sleeve (20) has one or more retaining members (21), which are to engage in the ring groove (15) of the shank (11) cutter for education support rotation.

13. The cutter according to item 12, characterized in that the retaining element (21) is separated from the fastening sleeve (20) along the two passes in the circumferential direction of the separation edges, and dividing each edge of the retaining element (21) is located opposite side walls of the groove (15).



 

Same patents:

FIELD: mining.

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FIELD: process engineering.

SUBSTANCE: invention relates to toll intended for removing cutter from cutter holder. Proposed remover comprises moving base element to receive actuator that has ejection core. Said actuator is directly or indirectly jointed with cylinder-piston or electric drive. Said actuator is arranged on base element to turn about rotary support. In compliance with second version, said ejection core is driven by actuator mechanism. In compliance with third version, said base element is provided with rest section for rest on cutter holder or wear-resistant washer. In compliance with fourth version, ejection core is jointed with flexible element, in particular, to chain. Note here that flexible element is fitted with no lengthwise camber in guide, in particular, tube. In compliance with fifth version, ejection core 65 is driven by fluid 66.3.

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FIELD: mining.

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8 cl, 6 dwg

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13 cl, 5 dwg

The invention relates to mining, in particular electric device for mining machines

The invention relates to mining and construction

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13 cl, 5 dwg

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Tool holder // 2334105

FIELD: mining.

SUBSTANCE: tool holder with toolhead has a cutter head in the retainer catch, the said cutler head being designed to receive a cutler capable of being inserted and replaced. The cutter head is mode in the form of a socket and is furnished with a hole for inserting the cutter. The toolhead has fixation side with retainer catch and outer side oriented opposite to the fixation side, so that during tool operation centrifugal forces are directed from the fixation side to the outer one. The retainer catch has an aperture passing through inner wall of the cutter head and forming dimensional connection to the environment, the said aperture opening the cutter head towards the outer side.

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8 cl, 6 dwg

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EFFECT: increased resource of mine cutting tool and reduced power consumption for cutting.

6 dwg

Cutter remover // 2432252

FIELD: process engineering.

SUBSTANCE: invention relates to toll intended for removing cutter from cutter holder. Proposed remover comprises moving base element to receive actuator that has ejection core. Said actuator is directly or indirectly jointed with cylinder-piston or electric drive. Said actuator is arranged on base element to turn about rotary support. In compliance with second version, said ejection core is driven by actuator mechanism. In compliance with third version, said base element is provided with rest section for rest on cutter holder or wear-resistant washer. In compliance with fourth version, ejection core is jointed with flexible element, in particular, to chain. Note here that flexible element is fitted with no lengthwise camber in guide, in particular, tube. In compliance with fifth version, ejection core 65 is driven by fluid 66.3.

EFFECT: fast and simple removal.

16 cl, 8 dwg

FIELD: mining.

SUBSTANCE: method for attachment of rock destroying inserts in working element of drilling tools and sinking machines involves inserts location in bushes made of flexible material that are pressed-in into working element of drilling tool and sinking machines, note that there are longitudinal channels on bushes external surface for air supply and distribution of stresses during pressing-in.

EFFECT: increase of error-free running time of working elements.

FIELD: process engineering.

SUBSTANCE: invention relates to cutter, particularly, to cutter with round shank comprising cutter head and cutter shank. Note here that fastening bush is retained in the cutter shank zone while said cutter is equipped with thrust element with guide zone. In compliance with this invention, for ease of cutter handling, said thrust element has deflecting section arranged in its zone opposite the cutter head bottom. Said section adjoins the guide zone to allow fastening bush to change from unlocked position to locked position of from partially locked position to locked position. Note also that guide zone extends through rounded flare to aforesaid thrust surface.

EFFECT: perfected design.

13 cl, 6 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to drilling and can be used in production of diamond drill bits with steel bodies. Drill bit comprises body, flushing assemblies, PDC cutters arranged in bushes of plastic metal fitted in blade holes. PDC cutter is attached with the help of two conical lock bushes fitted one into another. One of the latter has outer cylindrical surface mating with blade hole wall and inner conical surface symmetrical about hole axis, its cone vertex facing its bottom. Another bush with inner cylindrical surface mating with PDC cutter bottom surface and outer conical surface symmetric with hole axis, cone vertex facing its inlet. PDC cutter mount hole bottom has through hole in blade of smaller diameter intended for mounting or withdrawing of PDC cutter by axial impacts or squeezing with the help of drift pin to allow worn-out section turn and replacement at cutting edge by turn through required angle relative to axis or complete replacement of PDC cutter with new one.

EFFECT: higher reliability, longer life, simplified repair.

8 dwg

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