CN212069991U - Special fixture for heat treatment and shape correction device of cutter - Google Patents

Abstract

The utility model relates to a special fixture for a tool heat treatment righting device, which is applied to the technical field of tool processing and solves the problem that a workpiece can not be fixed, and comprises a positioning seat arranged on a workbench, wherein the positioning seat is symmetrically provided with two first racks for tightly supporting the workpiece along the circumferential direction, the positioning seat is rotationally connected with a gear meshed with the first racks, and one side of the positioning seat, which is far away from the first racks, of the gear is slidably connected with a second rack meshed with the gear; the positioning seat is equipped with first screw rod in the one side that the gear was kept away from to the second rack, and the one end that the positioning seat center was kept away from to the second rack is equipped with the second screw rod through the connecting plate, and first screw rod and second screw rod threaded connection have the opposite screw sleeve of both sides screw thread simultaneously. The utility model discloses a two first racks support the work piece tightly to the operator is convenient fast fixes a position the work piece, can reduce the work piece simultaneously and lead to the condition emergence that the work piece was extruded because of the atress inequality when being extruded, reduced the potential safety hazard.

Description

Special fixture for heat treatment and shape correction device of cutter

Technical Field

The utility model belongs to the technical field of the cutter processing technique and specifically relates to a positive device special fixture of cutter thermal treatment is related to.

Background

Currently, after a workpiece for machining a tool is subjected to heat treatment, an operator needs to shape the workpiece to improve the quality of the workpiece.

In the existing operation process, an operator puts a workpiece after heat treatment on a press machine, and then extrudes the workpiece after heat treatment through the press machine so as to achieve the orthomorphic effect.

Chinese patent No. CN203664573U discloses a frame structure of an open press, which comprises a worktable disposed on the frame, a slide block mounted above the worktable, guide rails mounted on two sides of the travel of the slide block, and a linear reciprocating motion of the slide block between the guide rails on the two sides along the guide rails; the two sides of the machine body are respectively provided with a side plate, a reinforcing connecting plate is further connected between the two side plates, the reinforcing connecting plate can be detachably fixed above a throat of the machine body, and the mounting height of the reinforcing connecting plate is equal to the height of the lower part of the guide rail.

The above prior art solutions have the following drawbacks: when the press machine extrudes the workpiece to be in the shape, an operator cannot fix the workpiece, so that the workpiece is easily extruded due to uneven stress in the shape correction process, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, one of the purposes of the utility model is to provide a positive shape device special fixture of cutter heat treatment, its advantage is: support through two first racks to the work piece tightly to the operator is convenient fast convenient fixes a position the work piece, can reduce the work piece simultaneously and lead to the condition emergence that the work piece was extruded because of the atress inequality when being extruded, has reduced the potential safety hazard.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a special fixture for a tool heat treatment righting device comprises a positioning seat arranged on a workbench, wherein two first racks for tightly abutting against a workpiece are symmetrically arranged on the positioning seat along the peripheral direction, a gear meshed with the first racks is rotatably connected to the positioning seat, and a second rack meshed with the gear is slidably connected to the positioning seat on one side, away from the first racks, of the gear; the positioning seat is provided with a first screw rod on one side, away from the gear, of the second rack, the end, away from the center of the positioning seat, of the second rack is provided with a second screw rod through a connecting plate, and the first screw rod and the second screw rod are simultaneously in threaded connection with threaded sleeves with opposite threads on two sides.

Through adopting above-mentioned technical scheme, the operator places the work piece on the positioning seat between two first racks, then the operator rotates threaded sleeve, make the second screw rod to the one side removal of keeping away from first screw rod, the second screw rod drives the second rack through the connecting plate and removes this moment, second rack drive gear rotates, the gear drives first gear and is close to the work piece simultaneously, when two first racks support tightly on the work piece simultaneously, operator stall threaded sleeve, thereby two first racks have played fixed effect to the work piece, and then be convenient for the operator quick convenient fix a position the work piece, with reduce the work piece and lead to the condition emergence that the work piece was extruded because of the atress inequality when being extrudeed, the potential safety hazard has been reduced.

The present invention may be further configured in a preferred embodiment as: the threaded sleeve is provided with scale marks along the peripheral direction.

Through adopting above-mentioned technical scheme, the operator can judge the distance that first rack removed through the position of observing the scale mark when rotating the threaded sleeve to the operator presss from both sides tightly the work piece of unidimensional not.

The present invention may be further configured in a preferred embodiment as: the positioning seat is provided with a placing groove for placing a workpiece, the positioning seat is provided with two first sliding grooves along the peripheral direction of the placing groove, and the two first racks are respectively connected in the first sliding grooves in a sliding manner; the standing groove is symmetrically provided with two guide rods extending into the first sliding groove in a penetrating mode along the peripheral direction, one end, far away from the first rack, of each guide rod is provided with a clamping plate, and a first spring is sleeved between each clamping plate and the side wall of the standing groove of each guide rod.

Through adopting above-mentioned technical scheme, the operator places the work piece two and supports in the standing groove between the tight board, the work piece struts two one sides that support the tight board and deviate from to each other, support the tight board at this moment and compress first spring, first spring is compressed and has elastic restoring force, and first spring is under the effect of elastic restoring force, first spring promotes to support the tight board and supports tightly on the work piece, and then be convenient for the operator to carry out preliminary location to the work piece, the operator adjusts the screw sleeve simultaneously and makes first rack promote the guide bar, the guide bar will support the tight board and further support tightly on the work piece, so that the operator is quick convenient fixes the work piece.

The present invention may be further configured in a preferred embodiment as: the tight board of support is equipped with the deflector in the one side of keeping away from the standing groove diapire, the deflector is the arc to keeping away from the one side bending of work piece.

Through adopting above-mentioned technical scheme, the operator is at the in-process of location work piece, and the operator is contradicted work piece and deflector, and the work piece produces the inclined thrust to the guide bar this moment for two support tight board and remove to the one side that deviates from mutually simultaneously, thereby the deflector has played the effect of direction to the work piece, and then the quick convenient work piece of being convenient for operator is fixed a position.

The present invention may be further configured in a preferred embodiment as: and a second spring is sleeved on the guide rod between the first rack and the side wall of the first sliding chute.

Through adopting above-mentioned technical scheme, first rack supports when tight work piece through the guide bar, first rack compresses the second spring, the second spring has elastic restoring force by the compression, when the operator need take out the work piece, operator's antiport screw sleeve, the second rack passes through the gear and drives first rack and remove to the one side of keeping away from the work piece this moment, the second spring is under the effect of elastic restoring force simultaneously, the second spring produces certain thrust to first rack, and then improve the gliding smoothness degree of first rack in first spout, so that the quick rotation screw sleeve of operator.

The present invention may be further configured in a preferred embodiment as: one side of the first rack, which deviates from the gear, is embedded with a plurality of balls along the length direction, the balls are rotatably connected to the first rack, and the balls are all inconsistent with the side wall of the first sliding groove.

Through adopting above-mentioned technical scheme, first rack is at gliding in-process, and first rack drives the lateral wall production friction of ball and first spout for ball self produces the rotation, and the ball converts the friction between first rack and the first spout lateral wall into rolling friction this moment, thereby the ball has reduced the frictional force between first rack and the first spout lateral wall, and then increases the gliding smoothness degree of first rack.

The present invention may be further configured in a preferred embodiment as: and a servo motor is arranged on one side of the workbench, which is away from the positioning seat, and an output shaft of the servo motor penetrates through the workbench and is connected with the positioning seat.

Through adopting above-mentioned technical scheme, the work piece is when being extrudeed, and servo motor drive positioning seat rotates, and the positioning seat can be adjusted the atress focus of work piece this moment, and then the degree of consistency of atress when can improving the work piece and being extruded to improve the quality of work piece.

The present invention may be further configured in a preferred embodiment as: a plurality of limiting grooves are formed in one side, facing the positioning seat, of the workbench, third springs are arranged in the limiting grooves, one ends, far away from the bottom walls of the limiting grooves, of the third springs extend out of the limiting grooves and abut against the positioning seat, and gaps are reserved between the positioning seat and the workbench; the output shaft of the servo motor is provided with a polygonal groove, the positioning seat is provided with a convex block matched with the groove, and the depth of the groove is greater than the length of the convex block.

Through adopting above-mentioned technical scheme, the press is when the extrusion work piece, the positioning seat is close to the workstation by pressure, the positioning seat compresses the third spring this moment, the third spring has elastic restoring force by compression, and the third spring cushions the energy-absorbing to the positioning seat under the effect of elastic restoring force, and slow release energy, thereby the third spring has played the effect of buffering to the positioning seat, and then increase the stability of positioning seat, further improve the degree of consistency of work piece atress, the lug slides along the length direction of recess simultaneously, the recess restricts the moving direction of lug, thereby the recess has played the effect of direction to the lug, with the stability that increases the positioning seat.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the workpiece is tightly abutted through the two first racks, so that an operator can position the workpiece quickly and conveniently, the situation that the workpiece is extruded due to uneven stress when the workpiece is extruded can be reduced, and potential safety hazards are reduced;

2. the servo motor drives the positioning seat to rotate, so that the stress center of gravity of the workpiece is adjusted by the positioning seat, the stress uniformity of the workpiece when the workpiece is extruded can be improved, and the quality of the workpiece is improved;

3. buffering energy-absorbing is carried out to the positioning seat through the third spring to increase the stability of positioning seat, further improve the degree of consistency of work piece atress, improve the quality of work piece.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic structural diagram for embodying the positioning seat in this embodiment.

Fig. 4 is an enlarged schematic view of a portion B in fig. 3.

Fig. 5 is an enlarged schematic view of a portion C in fig. 3.

Fig. 6 is a schematic structural diagram for embodying the workbench in this embodiment.

In the figure, 1, a workbench; 11. a servo motor; 12. a limiting groove; 13. a third spring; 14. a groove; 15. a bump; 2. positioning seats; 21. a first rack; 22. a second rack; 23. a gear; 24. a first screw; 25. a second screw; 26. a threaded sleeve; 261. scale lines; 27. a first chute; 28. a second chute; 29. positioning a groove; 3. a placement groove; 31. a guide bar; 32. a propping plate; 33. a first spring; 34. a guide plate; 35. a second spring; 36. a ball bearing; 4. and (5) a workpiece.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a special fixture for a tool heat treatment righting device, including the positioning seat 2 arranged on the extruder workbench 1, the standing groove 3 for placing the workpiece 4 is provided on one side of the positioning seat 2 deviating from the workbench 1. Two abutting plates 32 are symmetrically arranged on the two sides of the placing groove 3 along the length direction, a first spring 33 is arranged between the abutting plates 32 and the side wall of the placing groove 3, and two ends of the first spring 33 are respectively abutted on the abutting plates 32 and the side wall of the placing groove 3. The tight board 32 of support simultaneously is keeping away from standing groove 3 diapire one side along length direction fixedly connected with deflector 34, and two deflectors 34 all are the arc to the bending of one side that is carried on the back mutually.

Referring to fig. 1 and 2, in the process of placing the workpiece 4, the operator pushes the workpiece 4 against the guide plate 34, at this time, the workpiece 4 generates oblique thrust to the guide plate 34, the workpiece 4 simultaneously pushes the two abutting plates 32 to move towards the side away from each other, and the abutting plates 32 compress the first springs 33, the first springs 33 are compressed to have elastic restoring force, and the first springs 33 push the abutting plates 32 to abut against the workpiece 4 under the action of the elastic restoring force, so that the operator can position the workpiece 4 quickly and conveniently.

Referring to fig. 3 and 4, two first sliding grooves 27 are symmetrically formed in the positioning seat 2 on two sides of the placing groove 3 along the length direction, and a first rack 21 is slidably connected to each of the two first sliding grooves 27. Meanwhile, the positioning seat 2 is further provided with a positioning groove 29 communicated with the first sliding groove 27, and the positioning groove 29 is rotatably connected with a gear 23 engaged with the first rack 21. The positioning seat 2 is provided with a second sliding groove 28 parallel to the first sliding groove 27 on one side of the positioning groove 29 away from the first sliding groove 27, a second rack 22 engaged with the gear 23 is slidably connected in the second sliding groove 28, and one end of the second rack 22 away from the center of the positioning seat 2 extends out of the positioning seat 2.

Referring to fig. 3 and 5, a first screw 24 is fixedly connected to a side wall of the positioning seat 2 close to the second rack 22, a second screw 25 coaxial with the first screw 24 is fixedly connected to one end of the second rack 22 far away from the positioning seat 2 through a connecting plate, and threaded sleeves 26 are simultaneously and threadedly connected to the first screw 24 and the second screw 25, and threads of two sides of the threaded sleeves 26 in the length direction are opposite. One side of each of the two abutting plates 32, which is away from the other side, is fixedly connected with a guide rod 31, and one end of each guide rod 31, which is far away from the abutting plate 32, extends into the first sliding groove 27.

Referring to fig. 4 and 5, an operator rotates the threaded sleeve 26 clockwise, so that the second screw 25 moves towards the side away from the positioning seat 2, meanwhile, the second screw 25 drives the second rack 22 to move towards the side away from the positioning seat 2 through the connecting plate, the second rack 22 drives the gear 23 to rotate, at this time, the gear 23 drives the first rack 21 to slide in the first sliding groove 27, and the first rack 21 is made to approach the workpiece 4. When the first rack 21 is abutted against the guide rod 31, the first rack 21 pushes the abutting plate 32 to abut against the workpiece 4 through the guide rod 31, so that the effect of fixing the workpiece 4 is achieved, the firmness of the workpiece 4 is improved, and the situation that the workpiece 4 is extruded due to uneven stress when the workpiece 4 is extruded is reduced. Meanwhile, the threaded sleeve 26 is provided with scale lines 261 in the circumferential direction so that an operator can easily judge the moving distance of the first rack 21.

Referring to fig. 4 and 5, the guide rod 31 is sleeved with a second spring 35 between the first rack 21 and the side wall of the first chute 27, when the first rack 21 abuts the abutting plate 32 on the workpiece 4, the first rack 21 compresses the second spring 35, and the second spring 35 has elastic restoring force after being compressed. When the operator takes out the workpiece 4, the operator rotates the threaded sleeve 26 counterclockwise, so that the second screw 25 approaches the first screw 24, and at this time, the second rack 22 drives the first rack 21 to move to the side away from the workpiece 4 through the gear 23. The second spring 35 generates a certain pushing force to the second rack 22 under the elastic restoring force, so that the first rack 21 slides smoothly in the first sliding groove 27.

Referring to fig. 4, a set of balls 36 is embedded in the side of the first rack 21 and the side of the second rack 22 that faces away from each other, the two sets of balls 36 are respectively rotatably connected to the first rack 21 and the second rack 22, and the two sets of balls 36 respectively contact with the side walls of the first sliding groove 27 and the second sliding groove 28. In the sliding process of the first rack 21 and the second rack 22, the first rack 21 and the second rack 22 respectively drive the two sets of balls 36 to generate friction with the side walls of the first sliding chute 27 and the second sliding chute 28, so that the balls 36 rotate. At this time, the balls 36 convert the friction between the first and second racks 21 and 22 and the first and second chutes 27 and 28 into rolling friction, further increasing the smoothness of the sliding of the first or second rack 21 or 22.

Referring to fig. 6, a plurality of limiting grooves 12 are formed in one side of the workbench 1 facing the positioning seat 2, the plurality of limiting grooves 12 are uniformly distributed along the circumferential direction of the positioning seat 2, third springs 13 for supporting the positioning seat 2 are arranged in the limiting grooves 12, and one ends of the third springs 13, which are far away from the bottom wall of the limiting grooves 12, extend out of the limiting grooves 12 and are abutted to the positioning seat 2. And when the third spring 13 is in a normal state, the third spring 13 supports the positioning seat 2, so that a gap exists between the positioning seat 2 and the workbench 1. In the process of extruding the workpiece 4, the press machine applies pressure to the workpiece 4 and pushes the positioning seat 2 to approach the workbench 1. The positioning seat 2 compresses the third spring 13, the third spring 13 has elastic restoring force due to compression, and the third spring 13 buffers the positioning seat 2 under the action of the elastic restoring force to absorb energy and release energy slowly, so that the third spring 13 plays a role in buffering the positioning seat 2, the uniformity of stress of the workpiece 4 is improved, the press machine performs sufficient extrusion on the workpiece 4, and the quality of the workpiece 4 is improved.

Referring to fig. 6, workstation 1 deviates from one side fixedly connected with servo motor 11 of positioning seat 2, and servo motor 11's output shaft passes workstation 1, has seted up hexagonal recess 14 on the servo motor 11 output shaft, fixedly connected with and recess 14 matched with hexagon lug 15 on the positioning seat 2, lug 15 sliding connection is in recess 14, and the groove depth of recess 14 is greater than the length of lug 15. When the positioning seat 2 is close to the workbench 1, the groove 14 limits the moving direction of the bump 15, so that the groove 14 and the bump 15 play a role in guiding the positioning seat 2, and the stability of the positioning seat 2 is further improved. Meanwhile, an operator starts the servo motor 11, the servo motor 11 drives the positioning seat 2 to rotate on the workbench 1, so that the purpose of adjusting the stress center of the workpiece 4 is achieved, the stress uniformity of the workpiece 4 is improved, and the quality of the workpiece 4 is further improved.

The implementation principle of the embodiment is as follows: the operator is supported workpiece 4 and deflector 34 earlier and is contradicted, and workpiece 4 promotes two through deflector 34 and supports tight board 32 and remove to the one side that deviates from mutually, supports tight board 32 and compresses first spring 33 to first spring 33 promotes to support tight board 32 under the effect of elastic restoring force and carries out preliminary positioning to workpiece 4. The operator then simultaneously turns the two threaded sleeves 26 clockwise so that the second screw 25 moves to the side away from the first screw 24. At this time, the second screw 25 drives the second rack 22 to slide in the second chute 28 through the connecting plate, the second rack 22 drives the first rack 21 to approach the workpiece 4 through the gear 23, and the first rack 21 abuts against the tightening plate 32 on the workpiece 4 through the guide rod 31, so that the two tightening plates 32 fasten the workpiece 4, and the press machine can extrude the workpiece 4.

Then, an operator starts the servo motor 11 to drive the positioning seat 2 to rotate, so that the stress center of gravity of the workpiece 4 is adjusted by the positioning seat 2, and the stress uniformity of the workpiece 4 is improved. The press is when extrudeing work piece 4, and the press promotes positioning seat 2 and is close to workstation 1, and positioning seat 2 compresses third spring 13, and third spring 13 cushions the energy-absorbing to positioning seat 2, further increases the degree of consistency of work piece 4 atress.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a positive device special fixture of cutter heat treatment which characterized in that: the workpiece positioning device comprises a positioning seat (2) arranged on a workbench (1), wherein two first racks (21) used for tightly abutting against a workpiece (4) are symmetrically arranged on the positioning seat (2) along the peripheral direction, a gear (23) meshed with the first racks (21) is rotatably connected to the positioning seat (2), and a second rack (22) meshed with the gear (23) is slidably connected to one side, away from the first racks (21), of the gear (23) of the positioning seat (2);

the positioning seat (2) is provided with a first screw rod (24) on one side of a second rack (22) far away from a gear (23), one end of the second rack (22) far away from the center of the positioning seat (2) is provided with a second screw rod (25) through a connecting plate, and the first screw rod (24) and the second screw rod (25) are simultaneously in threaded connection with threaded sleeves (26) with opposite threads on two sides.

2. The special fixture for the tool heat treatment reshaping device according to claim 1, wherein: the threaded sleeve (26) is provided with scale marks (261) along the peripheral direction.

3. The special fixture for the tool heat treatment reshaping device according to claim 1, wherein: a placing groove (3) for placing a workpiece (4) is formed in the positioning seat (2), two first sliding grooves (27) are formed in the positioning seat (2) along the peripheral direction of the placing groove (3), and the two first racks (21) are respectively connected in the first sliding grooves (27) in a sliding manner;

the placing groove (3) is symmetrically provided with two guide rods (31) extending into the first sliding groove (27) in a penetrating mode along the peripheral direction, one end, far away from the first rack (21), of each guide rod (31) is provided with a clamping plate (32), and a first spring (33) is sleeved between the clamping plate (32) and the side wall of the placing groove (3) of each guide rod (31).

4. The special fixture for the tool heat treatment reshaping device according to claim 3, wherein: the side, far away from the bottom wall of the placing groove (3), of the abutting plate (32) is provided with a guide plate (34), and the guide plate (34) is bent to be arc-shaped towards the side far away from the workpiece (4).

5. The special fixture for the tool heat treatment reshaping device according to claim 3, wherein: and a second spring (35) is sleeved on the guide rod (31) between the first rack (21) and the side wall of the first sliding chute (27).

6. The special fixture for the tool heat treatment reshaping device according to claim 3, wherein: one side of the first rack (21) departing from the gear (23) is embedded with a plurality of balls (36) along the length direction, the balls (36) are rotatably connected to the first rack (21), and the balls (36) are all abutted to the side wall of the first sliding groove (27).

7. The special fixture for the tool heat treatment reshaping device according to claim 1, wherein: one side that workstation (1) deviates from positioning seat (2) is equipped with servo motor (11), the output shaft of servo motor (11) passes workstation (1) and is connected with positioning seat (2).

8. The special fixture for the tool heat treatment reshaping device according to claim 7, wherein: a plurality of limiting grooves (12) are formed in one side, facing the positioning seat (2), of the workbench (1), third springs (13) are arranged in the limiting grooves (12), one ends, far away from the bottom walls of the limiting grooves (12), of the third springs (13) extend out of the limiting grooves (12) and are abutted against the positioning seat (2), and gaps are reserved between the positioning seat (2) and the workbench (1);

the output shaft of the servo motor (11) is provided with a polygonal groove (14), the positioning seat (2) is provided with a convex block (15) matched with the groove (14), and the depth of the groove (14) is greater than the length of the convex block (15).

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