Device for cutting scrap
(57) Abstract:Use: trim Burr on the workpiece. The invention relates to the processing of metals by pressure. The inventive device for trimming the fin comprises a base, a stop for fixing the workpiece, the matrix and the punch with cutting edges. The device is provided with a carriage for mounting the clamp to the workpiece microneedle, drive lock, drive reciprocating movement of the carriage in the transverse direction, the drive movement of the matrix. The matrix is made in the form of straps with V-shaped cutting edges on the end of it. The punch is stationary in the form of a flat prism. The drive movement of the matrix is made in the form of a pneumatic cylinder, the piston rod of which is pivotally connected with the end of the lever, the other end of which is hinged to the base, and a lever provided with a roller and car safety. 5 Il. The invention relates to the processing of metals by pressure, namely, devices for cutting Burr.Famous stamp for trimming scrap containing a punch and die with cutting edges, and the matrix is made with the T-shaped through-groove in a plane parallel to the longitudinal axis of symmetry of the matrix, while the stamp is provided with a stop fixed the technological possibilities of the known device is limited, it eliminates the possibility of cutting Burr with a pointed end of the forged blanks microneedle.The technical result achieved by the invention consists in providing cutting scrap on castrandom the end of the workpiece microneedle.This is achieved by a device for cutting Burr, containing a base, a punch, a matrix with cutting edges and a stop for fixing the workpiece, provided the safety of the workpiece, a carriage for mounting the stop, drive release for guiding the carriage in the neutral position, the drive reciprocating movement of the carriage in the transverse direction in the horizontal plane and drive motion matrix, with the emphasis made in the form of clamp blanks, and matrix in the form of one end of the fixed based on the elastic strap, the free end of which is V-shaped cutting edges, the punch is stationary in the form of a flat prism with cutting edges arranged parallel to the base, the actuator moving the matrix is made in the form of a horizontally arranged in the longitudinal direction of the cylinder, the free end of the rod which is pivotally connected with the lever, pivoted the key is fixed on said arm and made in the form of a curved arc of the flat spring at the end of the free end of which is a two prismatic groove and the shaft for precise orientation of the workpiece relative to the cutting edges of the matrix.The set of distinctive features and known characteristics allows to realize a device for cutting Burr on the workpiece microneedle. This allows cutting Burr in semi-automatic mode with a high quality machined parts, which allows to minimize the amount of further processing operations needles.In Fig.1 shows a device for cutting Burr of Fig.2 is a view along arrow a in Fig.1; Fig.3 is a view along arrow B in Fig.1; Fig.4 section b-b of Fig. 1; Fig.5 the workpiece microneedle.Device for trimming the fin comprises a base 1, a carriage 2 is installed on the clamp 3 with the workpiece, a carriage drive in the transverse direction, is made in the form of a pneumatic cylinder 4, the dip switches right 5 left 6 source 7 of the provisions of the carriage 2.When the carriage is in the initial position it cooperates with the latch 8, which is connected with the pneumatic cylinder 9. On the basis set matrix 10, made in the form attached one noncoorientable is pivoted at one end on the basis of a pneumatic cylinder 13, the rod 14 which is pivotally connected with the end of lever 15, the other end of which is hinged to the base. The lever 15 is provided with a roller 16 with the opportunity to interact with the matrix 10. The lever 15 is fixed to the device 17, which is made in the form of a curved arc of the flat spring. At the end of the free end of the safety device 17 is made centering the shank 18, on both sides of which are made of prismatic grooves 19 and 20.On the basis of the stationary punch 21, in the form of flat prisms located parallel to the base of the cutting edges 22, 23. At the base there is also a microswitch 24 the end of the cutting Burr. Position 25 marked the workpiece microneedle.Device for cutting Burr is as follows.In the initial position, the carriage 2 is held by the retainer 8. The carriage is mounted clamp 3 with the workpiece microneedle 25. Using microvita (not shown) is provided to adjust the position of the tip of the microneedle relative to the plunger 21 by moving the carriage 2 in the longitudinal direction. This adjustment is made before the start of work and periodically repeats after processing a certain number of blanks.After cutting will trigger the micro switch 24, this turns the pneumatic cylinder 13, the motion of the rod 14 which is in the opposite direction to the rotation of the lever 15, the roller 16 will be released from engagement with the strap 10, and the cutting edges 11, 12 under the influence of elastic forces of the strap 10 will move up.Following this, the pneumatic cylinder 4, the carriage 2 is translated to the left before coming into contact with the microswitch 7, tresana fin edges 11 and 22 on the other side of the microneedle.At the end of pieces of work microswitch 24 and will switch the pneumatic cylinder 13 on the reverse, and pneumatic cylinder 4 feeds the carriage 2 in its initial position where it is locked by the latch 8. Clip 3 with the workpiece to cut the Burr is removed from the carriage 2, and in its place installed another clip with the new billet microneedle. Next, the operation of the device is performed in the order described below.The device provides high precision cutting Burr in semi-automatic mode. DEVICE FOR cutting BURR, containing a base, a punch, a matrix with cutting edges and a stop for fixing the workpiece, characterized in that it is equipped with a safety device of the workpiece, a carriage for mounting the stop, drive release for guiding the carriage in the neutral position, the drive reciprocating movement of the carriage in the transverse direction in the horizontal plane and drive motion matrix, with the emphasis made in the form of clamp blanks, and matrix in the form of one end of the fixed based on the elastic strap, the free end of which is V-shaped cutting edges, the punch is stationary in the form of PLoS is executed in the form of a horizontally arranged in the longitudinal direction of the cylinder, the free end of the rod which is pivotally connected with the lever, hinged to the other end on the base and provided with a roller with vzmozhnost interaction with the matrix, and the safety device of the workpiece mounted on the said lever and is designed as a curved arc of the flat spring on the end of the free end of which is a two prismatic groove and the shaft for precise orientation of the workpiece relative to the cutting edges of the matrix.
FIELD: plastic working of metals, possibly operations for finish working of forgings of double-end box nut wrenches.
SUBSTANCE: die set includes upper and lower plates with guiding columns, punch for punching operation mounted on upper plate, stripper, lower die for punching, half-open trimming lower die and trimming punch. Trimming lower die is mounted on upper plate; it has cutting edge and cavity arranged behind collar of cutting edge and designed for freely placing forging of nut wrench. Trimming punch is mounted on lower plate and it has embracing supporting surface for fixing forging at trimming and straightening operations.
EFFECT: enhanced quality of forging.
9 dwg, 1 ex
FIELD: metal working, possibly manufacture of flanged articles and articles without flanges of different alloys.
SUBSTANCE: method comprises steps of heating blank and deforming it in die set; sustaining relation of blank temperature to that of die set in range 0.7 - 7.4. Blank is heated in predetermined temperature range depending upon blank material. Said temperature range may be found from ductility diagram and(or) yield curves and(or) from blank material recrystallization diagrams.
EFFECT: enhanced factor of using metal, improved quality of articles, lowered labor consumption of forging and subsequent working of blank.
6 cl, 2 dwg, 2 ex
FIELD: plastic working of metals, possibly forming forged pieces, for example rings, gear wheels, flanges.
SUBSTANCE: initial blank is heated, preliminarily shaped, finally formed and trimmed. At final forming open die set is used; said die set has gap between its upper and lower halves. Said gap is arranged in zone of forging that is formed last. Dimensions of die set are no more than respective dimensions of forging in order to prevent deforming of displaced excess of metal.
EFFECT: lowered deforming efforts, decreased metal consumption.
11 cl, 2 dwg, 1 ex
FIELD: plastic working of metals, possibly manufacture of forged pieces with central opening.
SUBSTANCE: method comprises steps of upsetting heated initial blank; forming semi-finished product having bridge in zone of one end of its inner portion in die set without forming burr; remaining part of end surface having no contact with tool; then performing final forming, mainly in one half of open die set at displacing outer burr and with possibility of displacing inner burr; removing bridge and trimming burrs.
EFFECT: lowered metal and energy consumption at process.
20 cl, 6 dwg, 1 ex
FIELD: plastic metal working, namely processes of die forging, possibly for manufacturing stepped hollow shafts.
SUBSTANCE: method comprises steps of calibrating blank prepared by chopping; forming in blank upper and lower cavities, bottom portion with cylindrical near-bottom part and local outer bulged zone. Upper cavity is formed at first pressing out stage. At second stage of pressing out lower cavity, bottom portion and local outer bulged zone are formed simultaneously while blank is centered by punch along it upper cavity and in die along cylindrical near-bottom part.
EFFECT: enlarged manufacturing possibilities of method.
FIELD: plastic working of metals, possibly manufacture of hollow parts such as sleeve type parts with central protrusion on inner surface of bottom, namely artillery shell cases.
SUBSTANCE: method comprises steps of backward pressing out of initial blank and shaping bottom portion having protrusion on inner surface during several transitions. After backward pressing out transition, blank is drawn at several transitions. Bottom portion with central protrusion is formed during two transitions, namely: at transition for preliminarily shaping central protrusion and at transition for finally forming bottom portion. Preliminary forming is realized during transition of backward pressing out of initial blank by means of inner punch with recess. Final forming is realized by means of inner punch with recess and outer punch with protrusion.
EFFECT: improved quality of articles.
FIELD: plastic working of metals, namely forging production, manufacture of forged pieces of ring-like cone gear wheels with diameter 638 mm and with wide massive rim.
SUBSTANCE: method comprises steps of preliminarily upsetting initial blank with diameter 250 mm and length 335 mm; then subjecting upset blank to non-complete open broaching and its further die forging. All operations are realized in the same die set. Preliminary upsetting is performed on flat striker with diameter 350 mm till achieving diameter of upset blank equal to said value. Striker is arranged in central portion of die set impression before broaching and after broaching it is removed. Non-complete open broaching of upset blank is realized by means of detachable cone broach with mounting land having diameter 270 mm.
EFFECT: improved quality of produced forged pieces.
8 dwg, 1 ex
FIELD: plastic working of metals, possibly manufacture of axles of rolling stock by forming and forging.
SUBSTANCE: method comprises steps of deforming initial square cross section blank by forging till intermediate designed size by knocking off faces in order to form semi-finished cylindrical product of forged piece; then feeding semi-finished product of forged piece to hammer die set. Die set is detachable one, it includes two parts with cavities restricting open finish impression without flash grooves. Profile of finish impression of die set corresponds to final size of forged piece. Two compensation openings are arranged in ends of impression. In die set hot die forging of semi-finished product driven to rotation by means of manipulator is realized. Then excess metal on ends is trimmed, forged piece is straightened and cooled.
EFFECT: enhanced quality of forged piece due to providing optimal deforming schedule, lowered power and metal consumption.
4 cl, 5 dwg
FIELD: plastic working of metals, possibly manufacture of internal combustion connecting rod by closed forming.
SUBSTANCE: method comprises steps of preparing blank with two thickened end portions and one thickened portion in mean zone; deforming prepared blank in cavity of die set while making openings in thickened end portions at displacing blank metal; shaping mean portion of connecting rod and after-forming its heads. Volume of thickened portion in mean zone of blank exceeds volume of mean portion of article by value equal to half of total metal volume of blank displaced at making said openings. Gravity center of thickened portion of mean zone is spaced from axes of openings by distance inversely proportional to metal volumes displaced at forming respective openings.
EFFECT: improved quality of article.
2 dwg, 1 ex
FIELD: plastic working of metals, possibly forging blanks of nickel base super-alloy.
SUBSTANCE: method is realized with use of forging press with forging die sets of nickel base super-alloy having yield limit no less than stress of plastic yielding of super-alloy at forging for making forged pieces at temperature range approximately from 926.67°C till approximately 1010.00°C at nominal deformation rate. Blank for forging and die sets are heated till said forging temperature. Forging is realized at such temperature and at nominal deformation rate. Nickel base super-alloy selected from group of alloys may be used as material of forged blank. According to one variant of invention blank of compacted powder of nickel base super-alloy is used for forging. In such case die sets are made of nickel-base super-alloy containing, mass%: aluminum, approximately 5 - 7%; molybdenum, approximately 8 - 15%; tungsten, approximately 5 - 15%; magnesium, near 140 ppm; nickel and impurities, the balance.
EFFECT: lowered costs for producing forged pieces of super-alloy with desired properties.
15 cl, 3 dwg, 2 tbl