CN217070613U

CN217070613U - Compound die with trimming and correcting functions for transmission shaft of car gearbox

Info

Publication number: CN217070613U
Application number: CN202121101514.8U
Authority: CN
Inventors: 胡明星; 金永福; 戚丹
Original assignee: DONGFENG FORGING CO LTD
Current assignee: DONGFENG FORGING CO LTD
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2022-07-29
Anticipated expiration: 2031-05-21

Abstract

The utility model discloses a compound die for car gearbox transmission shaft with side cut correction function, including die holder, guide pillar piece, guide pillar and upper die base, die holder upper end both sides all are provided with the guide pillar piece. Has the advantages that: the utility model discloses a set up mould spring one, mould spring two, the ejector, screw rod and material return board, in the device working process, mode through this kind of reciprocating motion, utilize the elastic deformation of mould spring one and mould spring two, effectual cooperation terrace die, the die, relative motion and atress between the ejector, the stable process step of cutting edge and correcting of cutting edge that carries on, change the simplex step into from duplex step, change into the compound die from the compound die, other substitution scheme do not temporarily, and the quality of cutting edge is stable, the axiality is good, satisfy each item requirement of automation line, the production beat improves present 5 seconds/piece from original 10 seconds/piece, the beat promotes doubly, the cost of labor reduces, the work load of shift is showing and is improving, the device practicality is improved.

Description

Compound die with trimming and correcting functions for transmission shaft of car gearbox

Technical Field

The utility model relates to an automobile mold technical design technical field, concretely relates to compound die for car gearbox transmission shaft with side cut correction function.

Background

Passenger car transmissions have widely used bearing units in which the drive bearing unit is a connecting shaft intermediate the transmission input shaft and the output shaft. Along with the continuous expansion of the automobile market, the capacity of forgings is increased, particularly, the output of shaft forgings is increased, a transmission shaft belongs to the shaft parts, the product structure is complex, the forming difficulty is high, closed die forging is difficult to form, open die forging can be adopted only, and flash is cut off and flanges are corrected after forming.

The existing composite die vertical type forged transmission shaft for the transmission shaft of the car gearbox corrects the flange after the flash is cut off, the process is a two-step process, a die frame is a double-station combined die, the trimming quality stability is poor, the coaxiality is poor, various requirements of an automatic production line cannot be met, the production efficiency is low, the host machine beat is 8 seconds per piece, the press beat is 10 seconds per piece, the press beat seriously influences the production efficiency, the labor cost is high, the process needs to be finished by two persons, and the practicability of the device is reduced.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the defects of the prior art, the prior composite die vertical type forged transmission shaft for the transmission shaft of the car gearbox is provided with a flange which is corrected after trimming, the process is a two-step process, a die frame is a double-station combined die, the trimming quality stability is poor, the coaxiality is poor, various requirements of an automatic production line cannot be met, the production efficiency is low, the host machine rhythm is 8 seconds per piece, the press rhythm is 10 seconds per piece, the production efficiency is seriously influenced by the rhythm of the press, the labor cost is high, the flange can be finished by two persons, and the practicability of the device is reduced.

(II) technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides a compound die with trimming and correcting functions for a transmission shaft of a car gearbox, which comprises a lower die holder, a guide post block, a guide post and an upper die holder, the two sides of the upper end of the lower die base are respectively provided with the guide post block, the guide post is arranged in the guide post block, the upper die base is arranged at the upper end of the guide post, guide sleeves are arranged on two sides of the bottom end of the upper die base, the upper end of the upper die base is provided with a dovetail joint, the bottom end of the upper die base is provided with a male die, both sides of the male die are provided with screws, a second die spring is arranged on the outer side of the screw rod, a stripper plate is arranged below the second spring, a nut is arranged at the bottom end of the stripper plate, the upper end of the lower die holder is provided with a female die holder, both sides of the female die holder are provided with press plates, the upper end of the female die holder is provided with a female die, a first die spring is arranged in the die holder, and an ejector is arranged at the upper end of the first die spring.

Furthermore, the guide post block is welded with the lower die holder, the guide post is connected with the guide post block in a sliding mode, the upper die holder is welded with the guide sleeve, and the guide sleeve is connected with the guide post in an inserting mode.

By adopting the technical scheme, in the downward moving process of the upper die base, the guide pillar slides towards the inner part of the guide pillar block, and the guide sleeve connects the upper die base with the guide pillar.

Furthermore, the dovetail joint is welded with the upper die base, and the male die is formed on the upper die base.

By adopting the technical scheme, the dovetail joint is used for bearing external pressure, and the male die is combined with the female die to form a workpiece.

Further, the screw rod is rotatably connected with the upper die base, the second die spring is connected with the upper die base and the stripper plate through screws, and the nut is connected with the screw rod through threads.

By adopting the technical scheme, in the stamping process, the cylindrical male die is adopted to achieve the function of circumferential compression thermal correction and move along with the sliding block, the stripper plate is suspended through the screw rod and the nut, the screw rod penetrates through the center of the second die spring, one end of the second die spring is arranged on the upper die base, and the other end of the second die spring presses the stripper plate.

Furthermore, the die holder is connected with the lower die holder through a clamping groove, and the pressing plate is connected with the die holder through a screw.

By adopting the technical scheme, the press plate fixes the female die holder.

Further, the female die is connected with the female die seat through a bolt, the first die spring is connected with the female die seat through a screw, and the ejector is connected with the first die spring through a screw.

By adopting the technical scheme, the cylindrical female die and the female die holder are connected through the first die spring, when the edge is cut, the male die presses the transmission shaft to move downwards, so that the pressing force is transmitted to the first die spring to generate a compression deformation force, when the edge is cut, the compression deformation force is released, the first die spring drives the ejector to eject the transmission shaft to the original position, in the whole process, the ejector never leaves the female die holder, and the ejector moves up and down through the guiding and matching of the outer annular surface and the inner annular surface of the female die holder and is lubricated by organic oil in the middle, meanwhile, the female die is fixed on the end surface of the female die holder, and the inner opening part blocks the outer ring of the ejector, so that the ejector does not separate from the female die holder when the elastic force of the first die spring is released, and the transmission shaft forge piece body is smoothly reset.

(III) advantageous effects

Compared with the prior art, the utility model, following beneficial effect has:

in order to solve the problems that the existing composite die vertical type forging transmission shaft for the transmission shaft of the car gearbox corrects the flange after cutting off the flash, the process is a two-step process, a die frame is a double-station combined die, the stability of trimming quality is poor, the coaxiality is poor, various requirements of an automatic production line cannot be met, the production efficiency is low, the beat of a main machine is 8 seconds per piece, the beat of a press machine is 10 seconds per piece, the beat of the press machine seriously influences the production efficiency, the labor cost is high, two persons are required to complete the process, and the practicability of the device is reduced, the utility model discloses a die spring I, a die spring II, an ejector, a screw rod and a stripper plate are arranged, and in the working process of the device, the elastic deformation of the die spring I and the die spring II is utilized to effectively coordinate the relative motion and stress between a male die, a female die and the ejector to stably perform trimming and correction process steps, change into the simplex step from duplex step, change into the compound die from the joint die, do not have other substitution scheme temporarily to the side cut steady quality, the axiality is good, satisfies each item requirement of automation line, and the production beat improves to present 5 seconds/piece from original 10 seconds/piece, and the beat promotes one time, and the cost of labor reduces, and the work or shift's output is showing and is improving the device practicality.

Drawings

Fig. 1 is a schematic structural view of a compound die for a transmission shaft of a car gearbox with a trimming and correcting function of the utility model;

FIG. 2 is a cross-sectional view of a female die in a compound die for a transmission shaft of a car gearbox with trimming and correcting functions of the utility model;

fig. 3 is a front view of the ejector in the compound die for the transmission shaft of the car gearbox with the trimming and correcting functions.

The reference numerals are explained below:

1. a lower die holder; 2. a guide post block; 3. a guide post; 4. a guide sleeve; 5. an upper die holder; 6. dovetail joints; 7. a second die spring; 8. a male die; 9. a screw; 10. a material returning plate; 11. a nut; 12. pressing a plate; 13. an ejector; 14. a female die holder; 15. a first die spring; 16. and (4) a groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-3, the compound die for a transmission shaft of a transmission case of a car with trimming and correcting functions in the embodiment comprises a lower die holder 1, guide pillar blocks 2, guide pillars 3 and an upper die holder 5, wherein the guide pillar blocks 2 are arranged on both sides of the upper end of the lower die holder 1, the guide pillars 3 are arranged in the guide pillar blocks 2, the upper end of the guide pillars 3 is provided with the upper die holder 5, the two sides of the bottom end of the upper die holder 5 are provided with guide sleeves 4, the guide pillars 3 slide towards the inside of the guide pillar blocks 2 during the downward movement of the upper die holder 5, the guide sleeves 4 connect the upper die holder 5 with the guide pillars 3, the upper end of the upper die holder 5 is provided with a dovetail 6, the bottom end of the upper die holder 5 is provided with a male die 8, the dovetail 6 is used for bearing the external pressure, the male die 8 is combined with the female die 16 to form a workpiece, the two sides of the male die 8 are provided with screw rods 9, the outer sides of the screw rods 9 are provided with a second die 7, a stripper plate 10 is arranged below the second spring, the bottom end of the stripper plate 10 is provided with a nut 11, in the stamping process, as the cylindrical male die 8 is adopted, the function of circumferential compression thermal correction is achieved, the material returning plate 10 moves along with the sliding block, the screw rod 9 is suspended through the screw rod 9 and the nut 11, the screw rod 9 penetrates through the center of the second die spring 7, one end of the second die spring 7 is arranged on the upper die base 5, the other end of the second die spring is pressed on the material returning plate 10, when the sliding block moves downwards, a pretightening force is provided, when the edge cutting is finished, and the sliding block moves upwards, a compression deformation force is provided, the pressure changing force can press the material returning plate 10 to press the flash, so that the flash is not brought up, the flash is regularly attached to the end surface of the flange of the transmission shaft and keeps in place, the upper end of the lower die base 1 is provided with the female die base 14, both sides of the female die base 14 are provided with the pressure plates 12, the pressure plates 12 fix the female die base 14, the upper end of the female die base 14 is provided with the female die 16, the first die spring 15 is arranged in the female die base 14, the upper end of the first die spring 15 is provided with the ejector 13, the cylindrical female die 16 and the female die holder 14 are connected through a die spring I15, when trimming is performed, the male die 8 presses the transmission shaft to move downwards, so that pressing force is transmitted to the die spring I15, compression deformation force is generated, when trimming is completed, the compression deformation force is released, the die spring I15 drives the ejector 13 to eject the transmission shaft to an original position, in the whole process, the ejector 13 never leaves the female die holder 14, the ejector moves up and down through guiding and matching of an outer annular surface and an inner annular surface of the female die holder 14, organic oil is used for lubrication, meanwhile, the female die 16 is fixed on the end surface of the female die holder 14, and an inner opening part blocks an outer ring of the ejector 13, so that the ejector 13 does not leave the female die holder 14 when the elastic force of the die spring is released, and the transmission shaft forging body is smoothly reset.

As shown in fig. 1-3, in this embodiment, the guide post block 2 is welded to the lower die holder 1, the guide post 3 is slidably connected to the guide post block 2, the upper die holder 5 is welded to the guide sleeve 4, the guide sleeve 4 is inserted into the guide post 3, the dovetail 6 is welded to the upper die holder 5, the male die 8 is formed on the upper die holder 5, the screw 9 is rotatably connected to the upper die holder 5, the second die spring 7 is connected to the upper die holder 5 and the stripper plate 10 by screws, and the nut 11 is connected to the screw 9 by threads.

As shown in fig. 1-3, in this embodiment, the die holder 14 is connected to the die holder 1 through a clamping groove, the pressing plate 12 is connected to the die holder 14 through a screw, the die 16 is connected to the die holder 14 through a bolt, the first die spring 15 is connected to the die holder 14 through a screw, and the ejector 13 is connected to the first die spring 15 through a screw.

The specific implementation process of this embodiment is as follows: firstly, a workpiece is placed on a female die 16, then an external punching force pushes an upper die holder 5 to move downwards through a dovetail joint 6, then, a male die 8 is combined with the female die 16 to form the workpiece, in the punching process, a cylindrical male die 8 is adopted to play a role of circumferential compression thermal correction and move along with a sliding block, a stripper plate 10 is suspended through a screw rod 9 and a nut 11, the screw rod 9 penetrates through the center of a second die spring 7, one end of the second die spring 7 is pressed on the upper die holder 5, and the other end of the second die spring presses the stripper plate 10, when the sliding block moves downwards, a pre-tightening force is provided, when the edge cutting is finished, a compression deformation force is provided to press the stripper plate 10 to press the flash, so that the flash is not taken up and is regularly adhered to the flange end face of a transmission shaft, the original position is kept still, meanwhile, because the cylindrical male die 16 and the female die holder 14 are adopted and are connected through a first die spring 15, when the edge cutting is carried out, the male die 8 presses the transmission shaft to move downwards, therefore, the pressing force is transmitted to the first die spring 15 to generate a compression deformation force, when the edge cutting is finished, the compression deformation force is released, the first die spring 15 drives the ejector 13 to eject the transmission shaft to the original position, in the whole process, the ejector 13 never leaves the female die holder 14, and moves up and down through the guiding and matching of the outer annular surface and the inner annular surface of the female die holder 14, organic oil is used for lubrication in the middle, meanwhile, the female die 16 is fixed on the end surface of the female die holder 14, the inner opening part blocks the outer ring of the ejector 13, so that the ejector 13 does not separate from the female die holder 14 when the elastic force of the die spring is released, the transmission shaft forging body is smoothly reset, and through the mode of reciprocating motion, the relative motion and the stress between the male die 8, the female die 16 and the ejector 13 are effectively matched by utilizing the elastic deformation of the first die spring 15 and the second die spring 7, the edge cutting and the correction steps are stably carried out, the production method has the advantages that the production method is changed from a duplex step to a simplex step, the combined die is changed into a compound die, other substitution schemes are not used temporarily, the trimming quality is stable, the coaxiality is good, various requirements of an automatic production line are met, the production rhythm is improved from the original 10 seconds per piece to the current 5 seconds per piece, the rhythm is doubled, the labor cost is reduced, and the shift production capacity is improved obviously.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims

1. The utility model provides a compound die for car gearbox transmission shaft with side cut correction function which characterized in that: the die comprises a lower die holder (1), a guide post block (2), a guide post (3) and an upper die holder (5), wherein the guide post block (2) is arranged on two sides of the upper end of the lower die holder (1), the guide post (3) is arranged in the guide post block (2), the upper die holder (5) is arranged on the upper end of the guide post (3), guide sleeves (4) are arranged on two sides of the bottom end of the upper die holder (5), a dovetail joint (6) is arranged on the upper end of the upper die holder (5), a male die (8) is arranged on the bottom end of the upper die holder (5), screw rods (9) are arranged on two sides of the male die (8), a die spring II (7) is arranged on the outer side of each screw rod (9), a material returning plate (10) is arranged below each spring II, a nut (11) is arranged on the bottom end of the material returning plate (10), a die holder (14) is arranged on the upper end of the lower die holder (1), and pressing plates (12) are arranged on two sides of the die holder (14), the die is characterized in that a female die (16) is arranged at the upper end of the female die holder (14), a first die spring (15) is arranged in the female die holder (14), and an ejector (13) is arranged at the upper end of the first die spring (15).

2. The compound die with the trimming and correcting functions for the transmission shaft of the car gearbox as claimed in claim 1, wherein: the guide post block (2) is welded with the lower die holder (1), the guide post (3) is connected with the guide post block (2) in a sliding mode, the upper die holder (5) is welded with the guide sleeve (4), and the guide sleeve (4) is connected with the guide post (3) in an inserting mode.

3. The compound die with the trimming and correcting functions for the transmission shaft of the car gearbox as claimed in claim 1, wherein: the dovetail (6) is welded with the upper die holder (5), and the male die (8) is formed on the upper die holder (5).

4. The compound die with the trimming and correcting functions for the transmission shaft of the car gearbox as claimed in claim 1, wherein: the screw (9) is rotationally connected with the upper die base (5), the die spring II (7) is connected with the upper die base (5) and the stripper plate (10) through screws, and the nut (11) is connected with the screw (9) through threads.

5. The compound die with the trimming and correcting functions for the transmission shaft of the car gearbox as claimed in claim 1, wherein: the die holder (14) is connected with the lower die holder (1) through a clamping groove, and the pressing plate (12) is connected with the die holder (14) through a screw.

6. The compound die with the trimming and correcting functions for the transmission shaft of the car gearbox as claimed in claim 1, wherein: the die (16) is characterized in that the die seat (14) is connected through a bolt, the die spring I (15) is connected with the die seat (14) through a screw, and the ejector (13) is connected with the die spring I (15) through a screw.