CN213997398U

CN213997398U - Mould for positioning and slotting rotating shaft

Info

Publication number: CN213997398U
Application number: CN202022781074.7U
Authority: CN
Inventors: 朱兵
Original assignee: Changzhou Xinheli Precision Machinery Co ltd
Current assignee: Changzhou Xinheli Precision Machinery Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-08-20
Anticipated expiration: 2030-11-26

Abstract

The application relates to a mold for positioning and slotting a rotating shaft, which relates to the technical field of stamping molds and comprises an upper mold and a lower mold which are correspondingly arranged, wherein the upper mold is provided with a male mold, and the lower mold is provided with a female mold; the opposite side walls of the male die and the female die are positioning grooves, and the sections of the positioning grooves are arc-shaped; two ends of the positioning groove in the width direction are provided with a slotted cutting edge, and the arc angle of one positioning groove is pi/2; the limiting component is used for limiting the rotating shaft to rotate by an angle of odd multiples of 45 degrees and is arranged at the lower die. The positioning device has the advantages that the rotating shaft is convenient to position, the plurality of straight grooves are formed in the curved surface of the rotating shaft, and the position accuracy of the straight grooves is high.

Description

Mould for positioning and slotting rotating shaft

Technical Field

The application relates to the field of stamping dies, in particular to a die for positioning and grooving of a rotating shaft.

Background

The existing rotating shaft is a shaft part which is commonly used for connecting parts of products and is used for bearing bending moment and torque in rotating work. For example, the rotating shaft of the motor is usually fixed to the rotor in the circumferential direction, so that the rotor and the rotating shaft rotate together.

As shown in fig. 1, 8 straight grooves 11 are uniformly distributed on a peripheral wall of a rotating shaft 1, and the straight grooves 11 extend in an axial direction of the rotating shaft 1. The inner wall of the rotor can be additionally provided with a convex strip which is matched with the straight groove 11, so that the torque of the lifting rotor and the rotating shaft 1 is increased. The diameters of the two ends of the rotating shaft 1 are generally smaller than the diameter of the part provided with the straight groove 11, so that the two ends of the rotating shaft 1 and the middle part of the rotating shaft 1 form a step.

In view of the above-described related art, the inventors believe that the circumferential wall of the rotating shaft is generally curved, and when a plurality of straight grooves are formed in the circumferential wall of the rotating shaft, positioning of the straight grooves is difficult.

SUMMERY OF THE UTILITY MODEL

In order to improve and set up the difficult problem of a plurality of straight flute location on the pivot perisporium, this application provides a mould for pivot location fluting.

The application provides a mould for positioning and slotting of rotating shaft adopts following technical scheme:

a mold for positioning and slotting a rotating shaft comprises an upper mold and a lower mold which are correspondingly arranged, wherein the upper mold is provided with a male mold, and the lower mold is provided with a female mold; the side walls of the male die and the female die which are opposite are positioning grooves, and the sections of the positioning grooves are arc-shaped; two ends of the positioning groove in the width direction are provided with a slotted cutting edge, and the arc angle of one positioning groove is pi/2; the limiting component is used for limiting the rotating shaft to rotate by an angle of odd multiples of 45 degrees and is arranged at the lower die.

Through adopting above-mentioned technical scheme, under the punching press stroke of upper die and lower mould, positioning groove location and fixed rotating shaft, 4 fluting blades of two positioning groove can set up 4 straight flutes that distribute evenly simultaneously, can make the pivot can only rotate the angle of 45 odd multiples under spacing subassembly is spacing afterwards, punching press once more this moment, then can punch out remaining 4 straight flutes, and 8 straight flutes can follow the perisporium evenly distributed of pivot. The positioning device has the advantages that the rotating shaft can be conveniently positioned, the curved surface of the rotating shaft is simultaneously provided with a plurality of straight grooves, and the position precision of the straight grooves is high.

Optionally, the limiting assembly comprises a detachable positioning column arranged on the rotating shaft and a limiting block arranged at the lower die, a limiting groove is formed in the limiting block, a first groove wall and a second groove wall are arranged at 45 degrees of included angles, and the positioning column extends into the limiting groove and is attached to the first groove wall or the second groove wall.

By adopting the technical scheme, when one side of the positioning column is attached to the first groove wall, the initial position of the rotating shaft is positioned, and the rotating shaft is rotated after the first punching is finished, so that the positioning column is attached to the second groove wall on the side away from the first groove wall, and the second punching can be carried out at the moment. Through the arrangement of the positioning groove, the positioning column and the limiting groove, the position precision of the straight groove can be improved.

Optionally, the first cell wall is perpendicular to the spacing groove tank bottom and is set up, the second cell wall slope sets up, and first cell wall and second cell wall be 45 towards one side contained angle of notch, the reference column stretches into the spacing inslot from notch department.

By adopting the technical scheme, the limiting groove is convenient to form, the included angle between the first groove wall and the second groove wall is convenient to position, and the processing difficulty of the limiting block and the limiting groove is reduced.

Optionally, one side of the positioning column facing the first groove wall is a first positioning surface, and the first positioning surface is perpendicular to the groove bottom of the limiting groove and is attached to the first groove wall; one side of the positioning column, which is far away from the first positioning surface, is a second positioning surface, an included angle between the second positioning surface and the first positioning surface is 45 degrees, and an included angle between the second positioning surface and the first positioning surface is arranged towards the bottom of the limiting groove.

Through adopting above-mentioned technical scheme, set up first locating surface and second locating surface, can be so that the reference column is better with the first cell wall and the second cell wall laminating degree of spacing groove to be convenient for improve pivot turned angle's precision, be convenient for then promote the position precision between the adjacent straight flute.

Optionally, the lower mould includes die fixing plate, the die is embedded in die fixing plate department, the reference column sets up towards the lateral wall of one side lateral wall butt die fixing plate of die.

Through adopting above-mentioned technical scheme, when the pivot was located the positioning groove department of lower mould, can follow positioning groove's length direction and promote the pivot until the reference column towards the lateral wall of one side butt die fixing plate of die, the length direction of pivot was fixed a position this moment, when rotating the pivot and carrying out the punching press for the second time for the tip of holding ring is all the time with the lateral wall butt of die, thereby can make the straight flute length direction's that twice punching press came out in the pivot position comparatively unanimous.

Optionally, the limiting assembly further comprises a positioning ring sleeved at the end of the rotating shaft, and the positioning ring and the rotating shaft rotate coaxially; the positioning column is installed at the side wall of the positioning ring, a pressing screw is further connected to the side wall of the positioning ring in a threaded mode, and the pressing screw abuts against the peripheral wall of the rotating shaft.

By adopting the technical scheme, the positioning ring is connected with the positioning column, and the positioning of the rotating shaft in the length direction and the positioning of the rotating angle on the female die can be realized only by one-time assembly. The positioning ring is installed on the rotating shaft through the abutting screw, the installation mode is simple and convenient, and the limiting assembly is convenient to recycle.

Optionally, a ball guide sleeve is arranged on one side of the upper die facing the lower die, a ball guide pillar is arranged on the lower die corresponding to the ball guide sleeve, and the ball guide pillar is inserted into the ball guide sleeve.

Through adopting above-mentioned technical scheme, ball guide pillar and ball guide pin bushing are used for the blanking direction of mould and lower mould, and zero clearance when ball guide pillar and ball guide pin bushing cooperation, life is longer, and the direction precision is higher. And the blanking clearance of the die is convenient to keep, and the adverse effect of stamping equipment on the die during blanking is reduced. The side force generated during blanking can be borne, and the condition that the convex die and the concave die are deviated due to the side force is reduced.

Optionally, the upper die is provided with a guide post towards one side of the lower die, the lower die is provided with a buffer spring corresponding to the guide post, and the guide post is inserted into the buffer spring.

Through adopting above-mentioned technical scheme, buffer spring can be when going up mould and lower mould compound die the buffering go up the impact force of mould, reduces the vibrations of mould to be convenient for reduce the damage of mould. The guide post is convenient for provide compression direction for buffer spring when buffer spring compression, reduces the condition that compression spring buckles and takes place.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the positioning grooves, the slotting cutting edges and the limiting assemblies, the effects of positioning the rotating shaft, simultaneously forming a plurality of straight slots on the curved surface of the rotating shaft and having higher position precision of adjacent straight slots can be achieved;

2. through the arrangement of the positioning column, the limiting groove and the positioning ring, the effects of positioning the rotating shaft on the female die in the length direction and positioning the rotating angle can be achieved only through one-time assembly;

3. through the setting of ball guide pin bushing and ball guide post, can play the effect that keeps the blanking clearance of mould, and the lateral force that produces when can bear the blanking reduces because the effect of lateral force makes the mould off tracking take place the condition that the mould collapses the sword.

Drawings

Fig. 1 is a schematic view of an overall structure of a rotary shaft of the related art.

Fig. 2 is a schematic view of the overall structure of the mold according to the embodiment of the present application.

Fig. 3 is a schematic cross-sectional structure diagram of a mold according to an embodiment of the present application.

Fig. 4 is a schematic view of a connection structure between a limiting assembly and a lower die according to an embodiment of the present application.

Description of reference numerals: 1. a rotating shaft; 11. a straight groove; 2. an upper die; 21. an upper die base plate; 22. an upper base plate; 23. a male die fixing plate; 24. a male die; 25. a ball guide sleeve; 26. a guide post; 3. a lower die; 31. a lower die base plate; 32. a lower base plate; 33. fixing a female die plate; 34. a female die; 341. a positioning groove; 35. A ball guide post; 36. a buffer spring; 4. a limiting component; 41. a positioning ring; 411. tightly abutting the screw; 42. a positioning column; 421. a first positioning surface; 422. a second positioning surface; 43. a limiting block; 431. a limiting groove; 432. a first slot wall; 433. a second slot wall.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses mould for positioning and grooving of rotating shaft. Referring to fig. 2 and 3, the mold for positioning and grooving the rotating shaft comprises an upper mold 2 and a lower mold 3 which are correspondingly arranged, wherein the upper mold 2 comprises an upper mold seat plate 21, an upper backing plate 22 and a male mold fixing plate 23 which are sequentially arranged from top to bottom, and each plate of the upper mold 2 is fixed through a screw. The male die 24 is mounted at the male die fixing plate 23, and the male die 24 adopts a step type assembly method. The lower die 3 comprises a lower die seat plate 31, a lower backing plate 32 and a female die fixing plate 33 which are arranged in sequence from bottom to top, and all plates of the lower die 3 are fixed through screws. The die fixing plate 33 is provided with a die 34, and the die 34 also adopts a step type assembly method. The opposite side walls of the male die 24 and the female die 34 are positioning grooves 341, the cross sections of the positioning grooves 341 are arc-shaped, the rotating shaft 1 is positioned in the positioning grooves 341 of the female die 34, both ends of the positioning grooves 341 in the width direction are slotting cutting edges, the arc angle of one positioning groove 341 is pi/2, when the upper die 2 and the lower die 3 are closed, the slotting cutting edges are pressed into the peripheral wall of the rotating shaft 1, and four straight grooves 11 are formed. The rotating shaft 1 is rotated by an angle of 45 degrees or an odd multiple of 45 degrees, and the mold is closed again, so that another four straight grooves 11 can be formed in the peripheral wall of the rotating shaft 1.

Referring to fig. 2 and 3, in order to facilitate the lifting of the mold closing accuracy of the upper mold 2 and the lower mold 3, a ball guide sleeve 25 is provided at one time of the upper mold base plate 21 toward the lower mold 3, a ball guide post 35 is assembled at a position corresponding to the ball guide sleeve 25 on the lower mold base plate 31, the ball guide post 35 is inserted into the ball guide sleeve 25, and the upper mold 2 and the lower mold 3 can be guided to be closed by the ball guide sleeve 25 and the ball guide post 35. Go up mold base plate 21 length direction's both ends and respectively set up two guide posts 26 towards one side of lower mould 3, guide post 26 circumference cover is equipped with buffer spring 36, and buffer spring 36's one end butt mold base plate 21, and other end butt lower mould base plate 31 can directional compression buffer spring 36 when going up mold 2 and the compound die of lower mould 3, and reduces the impact force of going up mold 2 through buffer spring 36 to reduce the vibrations of mould. The service life of the die and the stamping precision of the die are convenient to improve.

Referring to fig. 2 and 4, in order to improve the position accuracy of the rotating shaft 1 on the die 34 and the position accuracy of the straight groove 11 on the rotating shaft 1, a limiting component 4 is provided at the lower die 3 in the present embodiment. The limiting component 4 comprises a positioning ring 41, a positioning column 42 and a limiting block 43, the positioning ring 41 is sleeved at one end of the rotating shaft 1 and abutted to the step of the rotating shaft 1, the side wall of the positioning ring 41 is in threaded connection with a abutting screw 411, the abutting screw 411 is abutted to the peripheral wall of the rotating shaft 1, and therefore the positioning ring 41 is fixed on the rotating shaft 1. The positioning column 42 is located on the sidewall of the positioning ring 41 and is perpendicular to the axis of the positioning ring 41, and the positioning column 42 and the positioning ring 41 are integrally formed. The rotating shaft 1 provided with the positioning ring 41 is placed at the positioning groove 341 of the die 34, and the rotating shaft 1 is pushed until the end of the positioning column 42 abuts against the side wall of the die fixing plate 33, so that the position of the rotating shaft 1 in the length direction on the die 34 is fixed.

The side wall of one side of the positioning column 42 is a first positioning surface 421, the side far away from the first positioning surface 421 is a second positioning surface 422, the included angle between the first positioning surface 421 and the second positioning surface 422 is 45 °, and the intersection point of the included angle between the first positioning surface 421 and the second positioning surface 422 is far away from the positioning ring 41. The limiting block 43 is mounted on the lower die seat plate 31, and a limiting groove 431 is formed in one side, facing the upper die 2, of the limiting block 43, and the limiting groove 431 is a through groove. The limiting groove 431 is provided with a first groove wall 432 and a second groove wall 433, the first groove wall 432 is perpendicular to the groove bottom of the limiting groove 431, and an included angle between one side of the first groove wall 432 and one side of the second groove wall 433, which face the groove opening, is 45 degrees. The positioning column 42 extends into the limiting groove 431 from the notch of the limiting groove 431, and when the positioning column 42 is perpendicular to the groove bottom of the limiting groove 431, the first positioning surface 421 is attached to the first groove wall 432. At the moment, the mold clamping can simultaneously punch 4 uniformly distributed straight grooves 11. The rotating shaft 1 rotates towards the second groove wall 433 until the second positioning surface 422 is engaged with the second groove wall 433, and the rotating angle of the rotating shaft 1 is 45 °. At this time, the mold clamping can punch another four straight grooves 11 which are uniformly distributed on the rotating shaft 1, and the position accuracy of the straight grooves 11 punched twice is high.

The implementation principle of the mold for positioning and grooving the rotating shaft is as follows: firstly, the rotating shaft 1 equipped with the positioning ring 41 is placed at the positioning groove 341 of the female die 34, the rotating shaft 1 is pushed until the end of the positioning column 42 abuts against the side wall of the female die fixing plate 33, and the rotating shaft 1 is rotated so that the first positioning surface 421 abuts against the first groove wall 432. And then, starting the stamping equipment, matching the ball guide sleeve 25 and the ball guide sleeve 25, directionally closing the die of the upper die 2 towards the lower die 3, embedding the slotting cutting edge into the peripheral wall of the rotating shaft 1, and forming four straight slots 11 which are uniformly distributed on the peripheral wall of the rotating shaft 1. The rotating shaft 1 is then rotated so that the second positioning surface 422 abuts against the second groove wall 433, and then the upper mold 2 and the lower mold 3 are closed again, so that the remaining four straight grooves 11 are punched in the rotating shaft 1. Finally, the shaft 1 is removed and the retaining screw 411 is loosened, the positioning ring 41 can be removed, and then the positioning ring 41 can be mounted on the next shaft 1 for reuse.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A mold for positioning and grooving a rotating shaft comprises an upper mold (2) and a lower mold (3) which are correspondingly arranged, wherein a male mold (24) is installed on the upper mold (2), and a female mold (34) is installed on the lower mold (3); the method is characterized in that: the side walls of the male die (24) and the female die (34) which are opposite are positioning grooves (341), and the sections of the positioning grooves (341) are arc-shaped; two ends of the positioning grooves (341) in the width direction are provided with slotted cutting edges, and the arc angle of one positioning groove (341) is pi/2; the device is characterized by further comprising a limiting assembly (4) used for limiting the rotating shaft (1) to rotate by an angle of odd multiples of 45 degrees, wherein the limiting assembly (4) is installed at the lower die (3).

2. The mold for positioning and grooving the rotating shaft according to claim 1, wherein: spacing subassembly (4) include that detachable installs reference column (42) on pivot (1) and install stopper (43) in lower mould (3) department, spacing groove (431) have been seted up on stopper (43), spacing groove (431) are provided with first cell wall (432) and second cell wall (433) that the contained angle is 45, reference column (42) extend to in spacing groove (431) and set up with laminating of first cell wall (432) or second cell wall (433).

3. The mold for positioning and grooving the rotating shaft according to claim 2, wherein: first cell wall (432) perpendicular spacing groove (431) tank bottom sets up, second cell wall (433) slope sets up, and first cell wall (432) and second cell wall (433) are 45 towards one side contained angle of notch, reference column (42) stretch into in spacing groove (431) from the notch department.

4. The mold for positioning and grooving of the rotating shaft according to claim 3, wherein: one side of the positioning column (42) facing the first groove wall (432) is a first positioning surface (421), and the first positioning surface (421) is perpendicular to the groove bottom of the limiting groove (431) and is attached to the first groove wall (432); one side of the positioning column (42) far away from the first positioning surface (421) is a second positioning surface (422), the included angle between the second positioning surface (422) and the first positioning surface (421) is 45 degrees, and the included angle between the second positioning surface (422) and the first positioning surface (421) faces the bottom of the limiting groove (431).

5. The mold for positioning and grooving the rotating shaft according to claim 2, wherein: lower mould (3) include die fixing plate (33), die (34) are embedded in die fixing plate (33) department, reference column (42) set up towards the lateral wall of one side lateral wall butt die fixing plate (33) of die (34).

6. The mold for positioning and grooving the rotating shaft according to claim 5, wherein: the limiting assembly (4) further comprises a positioning ring (41) sleeved at the end part of the rotating shaft (1), and the positioning ring (41) and the rotating shaft (1) rotate coaxially; the positioning column (42) is arranged on the side wall of the positioning ring (41), a pressing screw (411) is further connected to the side wall of the positioning ring (41) in a threaded mode, and the pressing screw (411) abuts against the peripheral wall of the rotating shaft (1).

7. The mold for positioning and grooving the rotating shaft according to claim 1 or 6, wherein: the ball guide sleeve (25) is arranged on one side, facing the lower die (3), of the upper die (2), a ball guide column (35) is arranged on the lower die (3) corresponding to the ball guide sleeve (25), and the ball guide column (35) is inserted into the ball guide sleeve (25).

8. The mold for positioning and grooving the rotating shaft according to claim 1, wherein: go up mould (2) and be provided with guide post (26) towards lower mould (3) one side, it is provided with buffer spring (36) to correspond guide post (26) on lower mould (3), guide post (26) are inserted and are located in buffer spring (36).