CN215032833U

CN215032833U - Part stamping tool

Info

Publication number: CN215032833U
Application number: CN202121149934.3U
Authority: CN
Inventors: 饶涛
Original assignee: Chongqing Bishan Maoyu Machinery Manufacturing Co ltd
Current assignee: Chongqing Bishan Maoyu Machinery Manufacturing Co ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2021-12-07
Anticipated expiration: 2031-05-26

Abstract

The utility model relates to the field of stamping tools, and discloses a part stamping tool, which comprises a stamping base and a stamping head which can move longitudinally relative to the stamping base, wherein a circular ring-shaped flaring lower die which is just opposite to the stamping head is arranged on the stamping base, and the flaring lower die is formed by splicing a plurality of circular arc-shaped die halves; the mould lamella all can follow the base and radially slide, and all is provided with the spacing subassembly of buffering between mould lamella and the punching press base. The utility model discloses forge at the synchronous ware ring gear and accomplish the back, utilize the punching press plastic of interior expanding's punching press frock realization to the synchronous ware ring gear, product tapering and circularity after the plastic have all obtained improving, and to a great extent has reduced the product surplus, has guaranteed the quality of product.

Description

Part stamping tool

Technical Field

The utility model relates to a punching press frock field, concretely relates to part punching press frock.

Background

A synchronizer is a device for synchronizing gears engaged with each other during shifting. During a gear shift, the peripheral speeds of the engaged ring gears of the pair of gears to be engaged should be made equal (i.e., synchronized) to enable smooth gear engagement. Otherwise, impact and noise can be generated between the two gear rings, and the service life of the gears is influenced. In order to facilitate shifting, the automotive transmission is provided with synchronizers between the gears, which are commonly used, so that a pair of gears which are meshed are synchronized and then meshed. The automobile synchronizer gear ring is one of important parts in an automobile speed change mechanism, and the processing quality, the structure, the service life and the like of the automobile synchronizer gear ring greatly influence the driving safety of an automobile.

At present, after the synchronizer gear ring is forged, the sizes of roundness, taper and the like of the inner wall of a product are large due to process defects, and the surface precision of the product cannot meet the requirement. Therefore, the subsequent forging and shaping process is required to eliminate the influence of roundness and taper and improve the yield of the product. At present, the inner hole shaping of a synchronizer gear ring is usually completed by utilizing a stamping device, a tapered flaring head is arranged on a stamping head, and the flaring head is utilized to realize the expanding and leveling of the inner hole of the synchronizer gear ring in the stamping process. Although the mode can achieve a better inner wall leveling effect, in the expanding process, the flaring head is in direct contact with the inner wall of the synchronizer gear ring at a high temperature and is in a relatively tight state, after the flaring leveling is finished, the temperature of the synchronizer gear ring can be slightly reduced, the flaring head cannot exit due to expansion with heat and contraction with cold, and secondary damage is easily caused to the inner hole of the synchronizer gear ring.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the intention is providing part punching press frock to after the punching press plastic is accomplished among the solution prior art, the hole to the synchronous ware ring gear causes the problem of secondary damage easily when the flaring head withdraws from.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the part stamping tool comprises a stamping base and a stamping head capable of longitudinally moving relative to the stamping base, wherein a circular flaring lower die opposite to the stamping head is arranged on the stamping base, and the flaring lower die is formed by splicing a plurality of circular arc-shaped die halves; the mould lamella all can follow the base and radially slide, and all is provided with the spacing subassembly of buffering between mould lamella and the punching press base.

The principle and the advantages of the scheme are as follows: in practical application, when stamping and shaping are carried out on forged synchronizer gear rings (or other ring materials), firstly, the forged synchronizer gear rings (or other ring materials) are sleeved on the flaring lower die, and at the moment, die flaps of the flaring lower die are in a state of being gathered towards the middle under the abutting action of the buffering limiting assembly, so that the outer diameter of the flaring lower die is smaller than the inner diameter of a workpiece to be stamped. Then the stamping head is driven to move downwards and is contained in the inner circle of the flaring lower die, the diameter of the stamping head is larger than the inner diameter of the flaring lower die in a gathering state, so that the die flap slides to the outer periphery along the middle part of the stamping base under the internal expansion action of the stamping head, the flaring lower die expands and abuts against the inner wall of the synchronizer gear ring, and the purpose of shaping a product is achieved by utilizing the external abutting action.

The beneficial effects of this technical scheme lie in:

1. according to the technical scheme, after the synchronizer gear ring is forged, the synchronizer gear ring is stamped and shaped by the aid of the inward-expanding stamping tool, the taper and the roundness of the shaped product are improved, the allowance of the product is reduced to a great extent, and the quality of the product is guaranteed.

2. Among this technical scheme, when carrying out the plastic to the synchronous ware ring gear, it goes on to utilize the mode that the punching press head drive flaring lower mould expands, not only can reach the circumference plastic of synchronous ware ring gear internal diameter, and after the plastic is accomplished, the internal expanding effect to the flaring lower mould disappears after the punching press head moves up, the mould lamella restores to gather together the state under the tight effect of support of buffering spacing subassembly, make the very light inner wall with the synchronous ware ring gear of external diameter of flaring lower mould break away from, and form the clearance, make things convenient for taking out after the shaping of synchronous ware ring gear, can not cause secondary damage to the product hole.

Preferably, as a refinement, the die comprises a die holder and a die block, the die block being fixed to the die block.

Among this technical scheme, when placing the synchronous ware ring gear, the die holder plays the effect of support, and the module holds in the inner hole of synchronous ware ring gear, the plastic that expands in the later stage of being convenient for, structural design is reasonable.

Preferably, as an improvement, the top inner edges of the modules are provided with first guide portions which are inclined downwards, and the bottom outer edges of the stamping heads are provided with second guide portions which are matched with the first guide portions.

In the technical scheme, the diameter of the stamping head is larger than the inner diameter of the flaring lower die, and the stamping head can play a role in guiding when being pressed down through the arrangement of the first guide part and the second guide part, so that the stamping head smoothly enters the flaring lower die to complete the expansion shaping.

Preferably, as an improvement, a plurality of guide grooves are radially arranged on the stamping base, guide blocks are connected in the guide grooves in a sliding manner, and the bottom of the die holder is fixed on the guide blocks.

In the technical scheme, the guide groove is used for accommodating the guide block, so that a determined moving path is provided for the sliding of the die holder (die clack), and the stroke of the die holder is standardized.

Preferably, as a modification, the guide block has an "L" shape in cross section.

In the technical scheme, the guide block is arranged to be L-shaped, so that on one hand, the sliding contact area with the guide groove can be increased, and the moving stability is improved; meanwhile, connecting points can be reserved for the die holder, and the structural design is reasonable.

Preferably, as an improvement, the side wall and the bottom wall of the die holder are respectively fixed with the two side walls of the guide block.

In the technical scheme, when the die holder is connected with the guide block, the guide block is arranged to be L-shaped, the die holder is connected to two side walls of the guide block, the connection area of the die holder and the guide block is increased, and the connection stability between equipment parts can be improved.

Preferably, as an improvement, the buffering limiting assembly comprises a limiting plate, a connecting rod and a resisting spring, the limiting plate is fixed on the outer wall of the stamping base and is arranged opposite to the guide groove, one end of the connecting rod is fixed on the inner side wall of the limiting plate, the other end of the connecting rod is connected to the guide block in a sliding mode, the resisting spring is sleeved outside the connecting rod, and the resisting spring is resisted tightly between the outer wall of the guide block and the inner wall of the limiting plate.

In the technical scheme, the buffer limiting assembly is arranged to realize automatic resetting of the stamping back flaring lower die, so that the machined synchronizer gear ring can be taken out conveniently. The limiting plate plays a role in integral support, when the stamping head presses down and expands the flaring lower die, the die clack and the guide block slide outwards along the guide groove, in the process, the guide block can synchronously slide axially relative to the connecting rod, the resisting spring is in a compression state, and the connecting rod plays a role in further ensuring the guide block to stably slide; after the punching press is finished, the internal expansion effect of the lower flaring die disappears after the punching press head moves upwards, at the moment, under the action of the elastic supporting force of the abutting spring, the guide block can move towards the central part along the guide groove, the automatic resetting effect of the die is achieved, and the synchronizer gear ring after processing can be conveniently taken out after the die is reset.

Preferably, as a modification, the punching head is provided with stroke marks.

In the technical scheme, the stroke mark on the stamping head is used for assisting in observing the downward moving path of the stamping head, so that the downward pressing degree is judged in an assisting manner, and the stamping effect is ensured; in addition, when the driving pressing equipment fails to press incompletely, operators can find and remove the failure conveniently at the first time.

Preferably, as an improvement, both sides of the stamping base are fixedly provided with positioning columns, the height of each positioning column is equal to that of the stamping base, a fixed locking stud is arranged between each positioning column and the stamping base, a pressing plate is fixed at the top end of each positioning column, the bottom surface of each pressing plate is abutted to the top surface of the stamping base, a connecting hole for the locking stud to pass through is formed in each pressing plate, and one end of each locking stud passes through the connecting hole and is in threaded connection with a locking nut.

In the technical scheme, in order to ensure the installation stability of the stamping base during equipment installation, positioning columns and locking nuts are arranged on two sides of the stamping base, so that the stamping base can be tightly propped against the middle position by the positioning columns and the locking nuts on the two sides, and the transverse propping of the stamping base is realized; on the other hand, the pressing plate is fixed at the top end of the positioning column, the locking nut rotates along the locking stud, the pressing plate is pressed down by the locking nut, the longitudinal abutting of the stamping base is achieved, and therefore the stability of the stamping base during use is guaranteed.

Drawings

Fig. 1 is a front view of a first embodiment of the component stamping tool of the present invention.

Fig. 2 is a top view of the stamped base of fig. 1.

Fig. 3 is a front view of the second embodiment of the part stamping tool of the present invention.

Fig. 4 is a front view of a third embodiment of the part stamping tool of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a rack 1, a stamping base 2, a stamping head 3, a guide groove 4, a guide block 5, a flaring lower die 6, a die holder 7, a die block 8, a limiting plate 9, a connecting rod 10, a pressing spring 11, a die holder 12, a first guide part 13, a stroke mark 14, a positioning column 15, a locking stud 16, a pressing plate 17 and a locking nut 18.

Example one

The embodiment is basically as shown in the attached figures 1 and 2: part punching press frock includes frame 1, punching press base 2 and punching press head 3.

Punching press base 2 is fixed in frame 1, and punching press base 2 is cylindric structure, and sets up three guide way 4 along the radial setting of punching press base 2 on punching press base 2's the top surface, and three guide way 4 sets up along 2 circumference equipartitions of punching press base, and equal sliding connection has the guide block 5 of "L" shape in the guide way 4.

The stamping base 2 is provided with a circular flaring lower die 6, and the flaring lower die 6 is formed by splicing three circular arc-shaped die halves. The die halves all include die holder 7 and module 8, and die holder 7 and module 8 are circular-arc structure, and the radius of die holder 7 is greater than the radius of module 8, and module 8 welded fastening is on the top surface of die holder 7, and the lateral wall and the diapire of die holder 7 respectively with the both sides wall welded fastening of guide block 5 for die holder 7 can be followed the radial slip of punching press base 2.

And a buffer limiting component is arranged between the die holder 7 and the stamping base 2. Combine as shown in fig. 2, buffering spacing subassembly all includes limiting plate 9, connecting rod 10 and support tight spring 11, limiting plate 9 all through the bolt fastening on the outer wall of punching press base 2 and just to setting up with guide way 4, the one end welded fastening of connecting rod 10 is on the inside wall of limiting plate 9, other end sliding connection is on guide block 5 (be provided with on guide block 5 and supply connecting rod 10 to insert the accommodation hole of establishing), support tight spring 11 cover and establish outside connecting rod 10, and support tight spring 11 and support tightly between the outer wall of guide block 5 and the inner wall of limiting plate 9.

The vertical sliding connection has die carrier 12 on frame 1, and die carrier 12 is located the top of punching press base 2, is fixed with the driving piece that is used for driving die carrier 12 to go up and down through the bolt in frame 1, and the driving piece in this embodiment is the pneumatic cylinder, also can select for cylinder or other drive structure during the practical application. The punching head 3 is fixed on the die set 12, the punching head 3 is arranged opposite to the inner hole of the flaring lower die 6, the punching head 3 is of a cylindrical structure, and the diameter of the punching head 3 is larger than that of the flaring lower die 6. The top end inner edge of the module 8 is provided with a first guide part 13 which inclines downwards, and the bottom end outer edge of the stamping head 3 is provided with a second guide part which is matched with the first guide part 13.

The specific implementation process is as follows: in an initial state, the die holder 7 is in a mutually gathered state under the action of the elastic supporting force of the abutting spring 11, the die blocks 8 are mutually close and spliced into the annular flaring lower die 6 at the moment, the inner diameter of the flaring lower die 6 is smaller than the outer diameter of the stamping head 3, and the outer diameter of the flaring lower die 6 is slightly smaller than the inner diameter of the synchronizer gear ring to be stamped. When stamping and shaping the forged synchronizer gear ring (or other ring materials), firstly, the forged synchronizer gear ring (or other ring materials) is sleeved on the flaring lower die 6. At the moment, the die holder 7 plays a supporting role, and the module 8 is accommodated in the inner hole of the synchronizer gear ring, so that the later-stage internal expansion shaping is facilitated.

Then start the pneumatic cylinder, drive punching press head 3 moves down, under the cooperation of first guide part 13 and second guide part, can move down the direction to punching press head 3 for punching press head 3 holds in the interior circle of flaring lower mould 6. Because the outer diameter of the stamping head 3 is larger than the inner diameter of the flaring lower die 6 in the gathering state, when the stamping head 3 is positioned in the flaring lower die 6, the module 8 and the die holder 7 slide to the periphery along the guide groove 4 of the stamping base 2 under the internal expansion action of the stamping head 3, so that the flaring lower die 6 expands and is abutted against the inner wall of the synchronizer gear ring, and the purpose of shaping a product is achieved by utilizing the external abutting action force. At this time, the guide block 5 slides outward along the guide groove 4, and the biasing spring 11 is in a compressed state.

After the punching press plastic, punching press head 3 shifts up and breaks away from the flaring lower mould under the drive of pneumatic cylinder, the effect of expanding in punching press head 3 to flaring lower mould 6 this moment disappears, under the elastic support effect of supporting tight spring 11, guide block 5 can be followed guide way 4 and moved to central point, make billet and die holder 7 resume the state of gathering together, the very light inner wall with the synchronous ware ring gear of external diameter of flaring lower mould 6 breaks away from, and form the clearance, make things convenient for taking out behind the shaping of synchronous ware ring gear, can not cause secondary damage to the product hole.

Example two

As shown in fig. 3, the present embodiment is different from the first embodiment in that: in this embodiment, the stroke mark 14 is provided on the punch 3, and the forming mark is provided toward the outside.

In this embodiment, during actual use, the stroke mark 14 on the stamping head 3 is used to assist in observing the downward movement path of the stamping head 3, so as to assist in judging the downward pressing degree and ensure the stamping effect; in addition, when the driving pressing equipment fails to press incompletely, operators can find and remove the failure conveniently at the first time.

EXAMPLE III

As shown in fig. 4, the present embodiment is different from the second embodiment in that: in this embodiment, the both sides of punching press base 2 all are provided with vertical reference column 15, and reference column 15 welds in frame 1, and the height of reference column 15 keeps the same with punching press base 2. A locking stud 16 is arranged between the positioning column 15 and the stamping base 2, a locking nut 18 is also welded on the rack 1, and the height of the locking nut 18 is higher than that of the positioning column 15. A transverse pressing plate 17 is fixed at the top end of the positioning column 15, the bottom surface of the pressing plate 17 abuts against the top surface of the stamping base 2, a connecting hole for a locking stud 16 to pass through is formed in the pressing plate 17, and one end of the locking stud 16 passes through the connecting hole and is in threaded connection with a locking nut 18.

In this embodiment, when the device is installed, in order to ensure the installation stability of the stamping base 2, the positioning columns 15 and the locking nuts 18 are arranged on the two sides of the stamping base, so that on one hand, the positioning columns 15 and the locking nuts 18 on the two sides can tightly support the stamping base 2 at the middle position, and the transverse supporting of the stamping base 2 is realized; on the other hand, the pressing plate 17 is fixed at the top end of the positioning column 15, and the locking nut 18 is rotated along the locking stud 16, so that the pressing plate 17 is pressed down by the locking nut 18, the longitudinal abutting of the stamping base 2 is realized, and the stability of the stamping base 2 in use is ensured.

The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. Part punching press frock, including punching press base and the punching press head that can punch press base longitudinal movement relatively, its characterized in that: the stamping base is provided with a circular flaring lower die which is opposite to the stamping head, and the flaring lower die is formed by splicing a plurality of circular arc-shaped die sections; the die clack all can follow the base and radially slide, and all is provided with the spacing subassembly of buffering between die clack and the punching press base.

2. The part stamping tool according to claim 1, wherein: the mold half comprises a mold base and a module, and the module is fixed on the module.

3. The part stamping tool according to claim 2, wherein: the top inner edge of the module is provided with a first guide part which inclines downwards, and the bottom outer edge of the stamping head is provided with a second guide part which is matched with the first guide part.

4. The part stamping tool according to claim 3, wherein: a plurality of guide grooves are radially formed in the stamping base, guide blocks are connected in the guide grooves in a sliding mode, and the bottom of the die holder is fixed to the guide blocks.

5. The part stamping tool according to claim 4, wherein: the cross section of the guide block is L-shaped.

6. The part stamping tool according to claim 5, wherein: the side wall and the bottom wall of the die holder are fixed with the two side walls of the guide block respectively.

7. The part stamping tool according to claim 6, wherein: the buffering limiting assembly comprises a limiting plate, a connecting rod and a resisting spring, the limiting plate is fixed on the outer wall of the stamping base and is arranged opposite to the guide groove, one end of the connecting rod is fixed on the inner side wall of the limiting plate, the other end of the connecting rod is connected to the guide block in a sliding mode, the resisting spring is sleeved outside the connecting rod, and the resisting spring is resisted tightly between the outer wall of the guide block and the inner wall of the limiting plate.

8. The part stamping tool according to claim 7, wherein: and the stamping head is provided with a stroke mark.

9. The part stamping tool according to claim 8, wherein: the stamping device is characterized in that positioning columns are fixedly arranged on two sides of the stamping base, the height of each positioning column is equal to that of the stamping base, a fixed locking stud is arranged between each positioning column and the stamping base, a pressing plate is fixed to the top end of each positioning column, the bottom surface of each pressing plate is abutted to the top surface of the stamping base, a connecting hole for the locking stud to penetrate through is formed in each pressing plate, and one end of each locking stud penetrates through the connecting hole and is in threaded connection with a locking nut.