Pressure quenching device for adjusting taper of large-tooth-width gear ring

Abstract

The utility model provides a pressure quenching device for adjusting the taper of a large-tooth-width gear ring, and belongs to the technical field of heat treatment pressure quenching devices. The device comprises a tool mechanism and a material clamping mechanism, the tool mechanism comprises a lower supporting plate, the lower portion of the lower supporting plate is connected with an oil outlet base, the upper portion of the lower supporting plate abuts against an outer cone, a plurality of fan-shaped claws abut against the interior of the outer cone, the inner walls of the fan-shaped claws form a cylindrical inner wall, and the outer walls of the fan-shaped claws are in threaded connection with adjusting bolts; the upper end cover of the outer cone is provided with an upper connecting plate, and the lower end of the upper connecting plate is provided with a pressing ring; the material clamping mechanism comprises an adjusting core disc, the upper end of the adjusting core disc abuts against an upper pressing plate, a lower base plate is fixed to the lower end of the adjusting core disc, a plurality of split core discs are connected between the upper pressing plate and the lower base plate in an embedded mode, the inner walls of the split core discs abut against the outer wall of the adjusting core disc, step parts are formed on the outer walls of the split core discs, and oil through holes are formed in the split core discs. The device has the advantages that the deformation problem in the pressure quenching process is reduced, and the product quality is improved.

Description

Technical Field

[0001] The utility model belongs to the field of heat treatment press quenching devices, in particular to a press quenching device for adjusting the taper of a large tooth width gear ring. Background Art

[0002] The gear ring is heated and mounted on the outer edge of the flywheel. After cooling, it is fastened to the outer edge of the flywheel to mesh with the starter gear, drive the crankshaft to rotate, and start the engine. There is a large-tooth-width starter gear ring on engineering machinery, with a tooth width of about 100mm-250mm and two sizes of internal teeth. During the press quenching manufacturing process, it is easy to form a taper, which makes the tooth direction and cross-bar spacing out of tolerance, and the scrap rate is high. Summary of the invention

[0003] The purpose of the utility model is to solve the above-mentioned deficiencies and provide a taper adjustment press quenching device for a large tooth width gear ring, which can effectively solve the deformation problem of the large tooth width gear ring during heat treatment.

[0004] The purpose of the utility model is achieved in this way:

[0005] A press quenching device for adjusting the taper of a large tooth width gear ring comprises a tooling mechanism and a clamping mechanism.

[0006] The tooling mechanism includes a ring-shaped lower support plate, an oil outlet seat is sealed and connected to the lower side of the lower support plate, a frustum-shaped outer cone is abutted on the upper side of the lower support plate, a plurality of fan-shaped claws uniformly distributed along the circumferential direction of the inner wall of the outer cone are abutted on the outer cone, and the inner walls of the plurality of fan-shaped claws form a cylindrical inner wall for abutting against the outer wall of the workpiece, an adjusting bolt extending out of the outer cone is screwed on the outer wall of the fan-shaped claw, an upper end cover of the outer cone is provided with an upper connecting plate with a through hole in the middle, and a pressure ring for covering and pressing the upper end of the workpiece is provided at the lower end of the upper connecting plate;

[0007] The clamping mechanism includes a cylindrical adjustment core disk, the upper end of the adjustment core disk is abutted with an upper pressure plate, and the lower end is fixed with a lower pad. A number of split core disks are embedded between the upper pressure plate and the lower pad, and the inner wall of the split core disk abuts against the outer wall of the adjustment core disk. The outer walls of the several split core disks are formed with step portions for abutting against the inner wall of the workpiece, and the split core disks are provided with oil holes that communicate with each other from top to bottom.

[0008] The utility model is further configured that a plurality of spring holes are opened on the upper connecting plate, a first compression spring whose bottom abuts against the upper end of the pressure ring is arranged in the spring hole, and an adjusting head abutting against the top of the first compression spring is screwed in the spring hole.

[0009] The utility model is further configured that the upper end of the pressure ring is provided with a blind hole for inserting the lower end of the first compression spring.

[0010] The utility model is further configured that a limit retaining ring is arranged at the lower end of the pressure ring, and the outer wall of the limit retaining ring abuts against the inner wall of the workpiece.

[0011] The utility model is further configured that the tops of the plurality of sector-shaped claws are abutted with adjustment washers, the upper end of the inner wall of the outer cone is formed with an adjustment retaining ring extending toward the center, and a plurality of second compression springs are arranged between the adjustment washers and the adjustment retaining rings.

[0012] The utility model is further configured that a third compression spring is arranged between the upper pressure plate and the upper end of the split core disc.

[0013] The utility model is further configured that a plurality of longitudinal strip-shaped adjustment holes are opened on the side wall of the outer cone, and the adjustment bolts slide up and down along the strip-shaped adjustment holes.

[0014] The utility model is further configured that the bottom of the adjusting core disk is provided with a clamping hole for clamping by a robot.

[0015] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0016] 1. The press quenching device provided by the utility model includes a tooling mechanism and a clamping mechanism to effectively fix the gear ring with two sizes of large tooth widths on the inner wall, and the fan-shaped claws and the split core disk can be fine-tuned to change the upper and lower diameter differences, so as to achieve the purpose of fine-tuning the product initiative and improve product quality.

[0017] 2. The first compression spring further provided by the utility model can be used to achieve self-reset after successful demoulding.

[0018] 3. The adjustment washer provided by the utility model and the second compression spring provided facilitate the adjustment of the upper and lower positions of the fan-shaped claws and have a wider range of applications.

[0019] 4. The third compression spring provided by the utility model is used for buffering between the upper pressure plate and the split core disc, so as to facilitate the resetting of the parts during demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 2 It is a partial structural schematic diagram of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the workpiece of the utility model;

[0023] Reference numerals:

[0024] 1-lower support plate; 10-oil outlet seat; 2-outer cone; 20-adjusting retaining ring; 21-second compression spring; 22-strip adjustment hole; 3-sector claw; 30-adjusting bolt; 4-workpiece;

[0025] 5-upper connecting plate; 50-through hole; 51-spring hole; 52-first compression spring; 53-adjusting head; 6-pressing ring; 60-blind hole; 61-limiting retaining ring;

[0026] 7-adjusting core disc; 70-upper pressure plate; 71-lower pad; 72-split core disc; 720-step portion; 721-oil hole; 73-third compression spring; 74-clamping hole. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings. Figure 1 — Figure 3 :

[0028] A press quenching device for adjusting the taper of a large tooth width gear ring comprises a tooling mechanism and a clamping mechanism.

[0029] The tooling mechanism includes a ring-shaped lower support plate 1, an oil outlet seat 10 is sealed and connected to the lower part of the lower support plate 1, a frustum-shaped outer cone 2 is abutted on the upper part of the lower support plate 1, a plurality of fan-shaped claws 3 uniformly distributed along the circumferential direction of the inner wall of the outer cone 2 are abutted inside the outer cone 2, and the inner walls of the plurality of fan-shaped claws 3 form a cylindrical inner wall for abutting against the outer wall of the workpiece 4, the outer wall of the fan-shaped claw 3 is screwed with an adjusting bolt 30 extending out of the outer cone 2, the upper end cover of the outer cone 2 is provided with an upper connecting plate 5 with a through hole 50 in the middle, and the lower end of the upper connecting plate 5 is provided with a pressing ring 6 for covering and pressing the upper end of the workpiece 4;

[0030] The clamping mechanism includes a cylindrical adjusting core disk 7, the upper end of which is abutted against an upper pressure plate 70, and the lower end of which is fixed with a lower pad 71, and a plurality of split core disks 72 are embedded between the upper pressure plate 70 and the lower pad 71, and the inner wall of the split core disk 72 is abutted against the outer wall of the adjusting core disk 7, and the outer walls of the plurality of split core disks 72 are formed with step portions 720 for abutting against the inner wall of the workpiece 4, and the split core disk 72 is provided with an oil hole 721 which is connected from top to bottom.

[0031] In the specific implementation process, after the workpiece 4 is preheated, it is placed outside the fan-shaped claw by the robot arm or robot for centering. By pressing the pressure ring downward, the workpiece is clamped and positioned, and then oil is injected. At this time, the oil injection direction is selected according to the actual numerical control, and the order of upper and lower oil injection or delayed oil injection is adopted to adjust the taper of the product by allowing the first oil injection end to cool and shrink first. Due to the strong clamping force formed after quenching, the workpiece wraps the clamping mechanism, and a large demoulding force is required at this time. The split core plate 72 is used as the "inner support" structure, which greatly reduces the demoulding force.

[0032] Preferably, the upper connecting plate 5 is provided with a plurality of spring holes 51 , in which a first compression spring 52 whose bottom abuts against the upper end of the pressing ring 6 is arranged, and in which an adjusting head 53 abuts against the top of the first compression spring 52 is screwed.

[0033] In the above structure, after successful demoulding, the first compression spring 52 can realize self-reset, thereby improving processing efficiency.

[0034] Preferably, the upper end of the pressing ring 6 is provided with a blind hole 60 for inserting the lower end of the first compression spring 52. This can facilitate accurate force on the pressing ring, and the first compression spring 52 is not easy to deviate.

[0035] Preferably, a limit stop ring 61 is provided at the lower end of the pressure ring 6 , and the outer wall of the limit stop ring 61 abuts against the inner wall of the workpiece 4 .

[0036] In the above structure, the limit ring 61 can limit the upper end of the workpiece 4 to ensure accurate taper and higher yield.

[0037] Preferably, the tops of the plurality of sector claws 3 are abutted against adjusting washers 30 , the upper end of the inner wall of the outer cone 2 is formed with an adjusting retaining ring 20 extending toward the center, and a plurality of second compression springs 21 are arranged between the adjusting washers 30 and the adjusting retaining ring 20 .

[0038] In the above structure, the second compression spring 21 is provided to adaptively adjust the height between the outer cone and the sector-shaped claw 3, so as to be suitable for more workpieces.

[0039] Preferably, a third compression spring 73 is provided between the upper pressing plate 70 and the upper end of the split core disc 72. The third compression spring 73 enables the split core disc to reset itself after demoulding, thereby improving processing efficiency.

[0040] It is worth mentioning that the upper pressing plate 70 and the lower pad 71 are both circular in shape, and the size of the upper pressing plate is smaller than that of the lower pad 71. The lower pad 71 is fixed to the lower end of the adjusting core plate by means of bolts.

[0041] Preferably, a plurality of longitudinal strip-shaped adjustment holes 22 are formed on the side wall of the outer cone 2 , and the adjustment bolts 30 slide up and down along the strip-shaped adjustment holes 22 .

[0042] In the above structure, after the adjusting bolt is placed at the desired position, it is tightened so that the outer wall of the sector claw can no longer slide with the inner wall of the outer cone, thereby achieving the correct taper requirement.

[0043] Preferably, the bottom of the adjusting core plate 7 is provided with a clamping hole 74 for clamping by a robot, which facilitates the installation of the workpiece 4.

[0044] In addition, the direction of oil injection is upper and lower oil injection, the upper oil injection is carried out through the through hole 50 of the upper connecting plate 5, and the lower oil injection method is carried out through the oil outlet seat 10. The reason for using two oil injection methods is that the inner gear ring contains two teeth of different specifications, and the end that is first sprayed with oil is allowed to cool and shrink first to adjust the taper of the product.

[0045] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A press quenching device for adjusting the taper of a large tooth width gear ring, characterized in that: It includes a tooling mechanism and a clamping mechanism. The tooling mechanism comprises a ring-shaped lower support plate (1), the lower part of the lower support plate (1) is sealedly connected to an oil outlet seat (10), the upper part of the lower support plate (1) is abutted against a frustum-shaped outer cone (2), the inner part of the outer cone (2) is abutted against a plurality of fan-shaped claws (3) uniformly distributed along the circumferential direction of the inner wall of the outer cone (2), and the inner walls of the plurality of fan-shaped claws (3) form a cylindrical inner wall for abutting against the outer wall of a workpiece (4), the outer wall of the fan-shaped claw (3) is screwed with an adjusting bolt (30) extending out of the outer cone (2), the upper end cover of the outer cone (2) is provided with an upper connecting plate (5) with a through hole (50) in the middle, and the lower end of the upper connecting plate (5) is provided with a pressing ring (6) for covering and pressing the upper end of the workpiece (4); The material clamping mechanism comprises a cylindrical adjustment core disk (7), the upper end of the adjustment core disk (7) is abutted against an upper pressure plate (70), and the lower end thereof is fixed with a lower pad (71), a plurality of split core disks (72) are embedded between the upper pressure plate (70) and the lower pad (71), and the inner wall of the split core disk (72) abuts against the outer wall of the adjustment core disk (7), the outer walls of the plurality of split core disks (72) are formed with a step portion (720) for abutting against the inner wall of the workpiece (4), and the split core disk (72) is provided with an oil hole (721) communicating with each other from top to bottom.

2. A press quenching device for adjusting the taper of a large tooth width gear ring according to claim 1, characterized in that: The upper connecting plate (5) is provided with a plurality of spring holes (51), a first compression spring (52) having a bottom abutting against the upper end of the pressure ring (6) is arranged in the spring hole (51), and an adjusting head (53) abutting against the top of the first compression spring (52) is screwed into the spring hole (51).

3. The press quenching device for adjusting the taper of a large tooth width gear ring according to claim 2, characterized in that: The upper end of the pressure ring (6) is provided with a blind hole (60) for receiving the lower end of the first compression spring (52).

4. The press quenching device for adjusting the taper of a large tooth width gear ring according to claim 2, characterized in that: A limit stop ring (61) is provided at the lower end of the pressure ring (6), and the outer wall of the limit stop ring (61) abuts against the inner wall of the workpiece (4).

5. The press quenching device for adjusting the taper of a large tooth width gear ring according to claim 1, characterized in that: The tops of the plurality of sector claws (3) are in contact with adjustment washers, the upper end of the inner wall of the outer cone (2) is formed with an adjustment retaining ring (20) extending toward the center, and a plurality of second compression springs (21) are arranged between the adjustment washers and the adjustment retaining ring (20).

6. The press quenching device for adjusting the taper of a large tooth width gear ring according to claim 1, characterized in that: A third compression spring (73) is provided between the upper pressure plate (70) and the upper end of the split core disc (72).

7. The press quenching device for adjusting the taper of a large tooth width gear ring according to claim 1, characterized in that: A plurality of longitudinal strip-shaped adjustment holes (22) are provided on the side wall of the outer cone (2), and the adjustment bolts (30) slide up and down along the strip-shaped adjustment holes (22).

8. The press quenching device for adjusting the taper of a large tooth width gear ring according to claim 1, characterized in that: The bottom of the adjustment core disk (7) is provided with a clamping hole (74) for clamping by a robot.

Images