A mold and processing method for automotive parts

Abstract

The invention discloses an automobile parts processing mold, comprising a hole-turning die, wherein the hole-turning die comprises a fixed die and a movable die; the movable die comprises a first die and a second die which are arranged relatively to each other and are respectively used for simultaneously turning holes on two end holes on a swing arm; a third movable driving device is arranged between the first die and the second die, and the third movable driving device drives the first die and the second die to move synchronously and separately along the axis direction of the end hole to complete the hole-turning preparation; the first die and the second die are respectively connected to the first movable driving device and the second movable driving device, and the first movable driving device and the second movable driving device respectively drive the first die and the second die to move toward each other along the axis direction of the end hole to complete the swing arm unloading preparation; the automobile parts processing mold of the invention simplifies the swing arm unloading operation through the contraction of the hole-turning die, and improves the hole-turning operation efficiency and the product qualification rate.

Description

Technical Field

[0001] The invention belongs to the field of automobile parts processing, and more specifically relates to an automobile parts processing mold and a processing method. Background Art

[0002] The two end holes of the automobile swing arm stamping parts are important structures for positioning when installing the automobile swing arm, and play a decisive role in the performance of the automobile swing arm. Technically, the coaxiality of the two end holes of the swing arm is required to be within 0.2mm. In the past, the automobile swing arm hole turning was completed by two sets of molds, two positioning and two hole turning processes, and it was extremely difficult to ensure the coaxiality of the two end holes. And because the hole is turned inward, it is not easy to pick up and put parts during loading and unloading. The production is difficult, the hole turning process is difficult, the production efficiency is low, the scrap rate is low, and the cost is high.

[0003] In order to solve the above technical problems, it is proposed in the prior art to cut the hole-turning die. For example, the invention application with application number 201911166591.9 proposes a structure of a hole-turning die, which can be installed once, the holes at both ends can be turned at the same time, and then the unloading operation can be carried out. It has been found through use that the hole-turning die with this structure can indeed meet the coaxiality requirements of the end holes during the hole-turning. However, the unloading operation is relatively difficult. When unloading the hole-turning die of the above invention application, it is first necessary to push the swing arm forward and move it a certain distance so that the end hole on the swing arm is disengaged from the fixed half of the die, and then drive the swing arm to rise so that it is disengaged from the die as a whole to complete the unloading. In the process of pushing the swing arm forward, due to the structure of the swing arm itself with small ends and large middle, and the need to ensure the installation accuracy of the swing arm when turning the hole, it is difficult to push it, which affects the unloading operation and even causes damage to the swing arm. Summary of the invention

[0004] The purpose of the present invention is to provide an automobile parts processing mold and a processing method to solve the problems raised in the background technology.

[0005] The technical solution of the present invention is a die for processing automobile parts, comprising a punching die for punching end holes on a swing arm, the punching die comprising a fixed die for mounting the swing arm and a movable die arranged at the end of the fixed die and used for punching the end holes; the movable die comprises a first die and a second die which are arranged opposite to each other and are respectively used for punching the end holes of the swing arm at the same time;

[0006] A third moving drive device is provided between the first die and the second die, and the third moving drive device drives the first die and the second die to move synchronously and separately along the axis direction of the end hole to complete the preparation for hole turning;

[0007] The first die and the second die are connected with a first moving drive device and a second moving drive device respectively, and the first moving drive device and the second moving drive device respectively drive the first die and the second die to move toward each other along the axis direction of the end hole to complete the swing arm unloading preparation.

[0008] Preferably, the first die and the second die each include a die body and a circular punching groove with an axis horizontally arranged on the die body for punching the end hole, and the axes of the two circular punching grooves coincide with the axis of the end hole.

[0009] Preferably, the first moving driving device comprises a first dovetail guide groove arranged at the bottom of the first die, a first dovetail guide rail placed in the first dovetail guide groove, and a first nitrogen spring connected to the first die away from the second die, and the axis of the first nitrogen spring is parallel to the first dovetail guide rail and parallel to the axis direction of the end hole;

[0010] The second mobile driving device includes a second dovetail guide groove arranged at the bottom of the second die, a second dovetail guide rail placed in the second dovetail guide groove, and a second nitrogen spring connected to the second die away from the first die. The axis of the second nitrogen spring is parallel to the second dovetail guide rail and is parallel to the axis direction of the end hole.

[0011] Preferably, the third moving drive device comprises a die wedge mechanism for realizing the separation movement of the first die and the second die;

[0012] The die wedge mechanism comprises a first movable wedge block arranged between the first die and the second die, a side surface of the first movable wedge block away from the fixed die and parallel to the end hole axis is arranged with a first wedge surface upward, a second movable wedge block driven by a press is arranged above the first wedge surface, and a second movable wedge block is arranged with a second wedge surface facing and parallel to the first wedge surface, and the second movable wedge block descends to drive the first movable wedge block to move between the first die and the second die, so as to complete the preparation for the movable die to turn the hole;

[0013] The first movable wedge is also connected to a wedge reset mechanism, which includes a reset nitrogen spring fixedly connected to the bottom of the first movable wedge, the axis of the reset nitrogen spring is consistent with the movement direction of the first movable wedge, and the tail of the reset nitrogen spring is arranged between the first die and the second die and fixed.

[0014] Preferably, a first punch and a second punch are respectively provided on both sides of the punching die, and the first punch and the second punch both include a punch cam mechanism driven by a press, and a punch body and a press plate driven by the punch cam mechanism;

[0015] The punch wedge mechanism includes a lifting wedge driven by a press and a horizontally movable wedge driven by the lifting wedge; the punch body includes a punch seat fixedly connected to the horizontally movable wedge, and a punch fixedly connected to the punch seat and aligned with the axis direction of the end hole; the pressing plate is arranged on the side of the punch seat facing the punching die, and the punch passes through the pressing plate and faces the punching circular groove;

[0016] A plurality of coil springs are fixedly connected to the side surface of the pressing plate opposite to the punch seat, and the center lines of the coil springs are parallel to the axis of the end hole.

[0017] A method for processing automobile parts, using the aforementioned automobile parts processing mold to perform end hole drilling processing on a swing arm, comprises the following steps:

[0018] S1, loading, install the swing arm to be turned on the fixed die,

[0019] S2, mold closing, the press moves downward, driving the third moving drive device and the punch wedge mechanism to work, so that the moving die is ready for hole turning, and the pressure plate rests on the installed swing arm;

[0020] S3, hole flipping, the press continues to move downward, the second moving wedge continues to descend, but the first moving wedge remains stationary, the pressing plate remains stationary, the punch seat and the punch continue to move toward the hole flipping die side, and the punch completes the hole flipping process;

[0021] S4, open the mold, and the press machine is reset upward. First, the punch is withdrawn and exits the hole-turning circular groove; then the first movable wedge and the pressure plate are reset; then, the first die and the second die move downward, and the holes at both ends of the swing arm are respectively separated from the hole-turning circular grooves on the first die and the second die;

[0022] S5, unloading, the push plate moving upward pushes the swing arm on the fixed die vertically upward, so that the swing arm falls off the hole-flipping die, and finally moves out of the mold horizontally.

[0023] The beneficial effect of an automobile parts processing mold of the technical solution of the present invention is that the swing arm can simultaneously perform the hole punching operation on the two end holes during one installation, thereby improving the hole punching accuracy. At the same time, after the hole punching is completed, the swing arm unloading operation is simplified through the contraction of the hole punching mold, thereby improving the hole punching operation efficiency and product qualification rate.

[0024] The beneficial effects of an automobile parts processing method of the technical solution of the present invention are: simple operation, one-time installation, simultaneous drilling of the holes at both ends, simple and fast unloading operation, simplified unloading mechanism of the mold, simplified unloading operation, and avoiding the problem of damaging the swing arm parts during unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a schematic diagram of the structure of an automobile parts processing mold according to the technical solution of the present invention.

[0026] Figure 2 It is a schematic diagram of the hole-burdening die structure in the technical solution of the present invention.

[0027] Figure 3 It is a schematic diagram of the movable die structure in the technical solution of the present invention.

[0028] Figure 4 It is a schematic diagram of the first die structure in the technical solution of the present invention.

[0029] Figure 5 Schematic diagram of the die structure for hole turning during unloading.

[0030] Figure 6 It is a schematic diagram of the structure of the punching die during the punching operation.

[0031] Figure 7 It is a schematic structural diagram of the first punch in the technical solution of the present invention.

[0032] Figure 8 It is a schematic diagram of the swing arm structure in the technical solution of the present invention. DETAILED DESCRIPTION

[0033] In order to facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention is further described in conjunction with the accompanying drawings of the specification.

[0034] like Figure 8 As shown, the swing arm 300 that needs to be punched in the technical solution of the present invention, the end hole 301, the positioning surface 302 when punching the hole, and the pressing surface 303 of the press plate when punching the hole. In order to ensure the accuracy of the swing arm 300 when punching the hole, when the swing arm 300 is installed, the swing arm 300 needs to be pressed on the mounting seat, and the mounting seat is adapted to the shape and size of the swing arm 300, so that the positioning and installation are completed after the swing arm 300 is pressed on the mounting seat. The front end of the mounting seat is set as a fixed die 20 of the punching die.

[0035] like Figure 1 As shown, the technical solution of the present invention is an automobile parts processing mold, comprising a punching die 100 for punching the end hole 301 on the swing arm 300 and a punching die ( Figure 1 Only the first punch 200 is drawn in the figure. The first punch 200 has the same structure as the second punch and is respectively arranged on both sides of the punching die 100, so as to realize the synchronous punching operation of the two end holes 301 on the swing arm 300.

[0036] like Figures 2 to 4As shown, in the technical solution, the punching die 100 includes a fixed die 20 for installing the swing arm 300 and a movable die 10 arranged at the end of the fixed die 20 and used to punch the end holes 301. The movable die 10 includes a first die 11 and a second die 12 which are arranged relatively and respectively used to punch the two end holes 301 on the swing arm 300 at the same time. The first die 11 and the second die 12 are used to punch the two end holes 301 at the same time, so that one installation is achieved, and the two end holes are punched at the same time, which ensures the coaxiality of the two end holes after the punching process and avoids the processing error caused by multiple installations.

[0037] like Figures 2 to 4 As shown, in the technical solution, a third moving drive device 15 is arranged between the first die 11 and the second die 12, and the third moving drive device 15 drives the first die 11 and the second die 12 to move synchronously away from each other along the axis direction of the end hole 301 to complete the preparation for hole flanging. Before the hole flanging is performed, the first die 11 and the second die 12 are relatively close to each other, and the distance between the first die 11 and the second die 12 is smaller than the distance between the two end holes. The first die 11 and the second die 12 are synchronously pushed outward by the third moving drive device 15 and moved to the hole flanging processing position to prepare for the hole flanging processing and ensure that the two end holes can be flanging at the same time.

[0038] like Figures 2 to 4 As shown, in the present technical solution, the first die 11 and the second die 12 are respectively connected with the first mobile drive device 13 and the second mobile drive device 14, which respectively drive the first die 11 and the second die 12 to move toward each other along the axial direction of the end hole 301 to complete the unloading preparation of the swing arm 300. After the hole turning is completed, the third mobile drive device 15 is withdrawn from between the first die 11 and the second die 12, and the space between the first die 11 and the second die 12 is released. Then, the first die 11 and the second die 12 are respectively driven by the first mobile drive device 13 and the second mobile drive device 14 to move inward, that is, the first mobile drive device 13 and the second mobile drive device 14 move downward, so that the two end holes of the hole turning on the swing arm 300 are respectively separated from the first die 11 and the second die 12. In this way, in the end holes of the hole turning, the first die 11 and the second die 12 will not interfere with and affect the unloading of the swing arm 300, so that the swing arm 300 can be directly pushed upward and unloaded, and the unloading operation is simple and fast. In this technical solution, by the inward contraction of the mobile die 10, the unloading operation of the swing arm 300 is simplified, the hole turning operation efficiency and product qualification rate are improved, the unloading device structure of the swing arm 300 is simplified, the cost is reduced, and the control system and control process are simplified.

[0039] like Figure 4As shown, in the technical solution, the first die 11 and the second die 12 both include a die body 111 and a hole-turning circular groove 110 with a horizontal axis arranged on the die body 111 for turning the end hole 301, and the axes of the two hole-turning circular grooves 110 coincide with each other and coincide with the axis of the end hole 301. The first die 11 and the second die 12 have the same structure and are symmetrically arranged. The first die 11 and the second die 12 have a simple structure and are easy to install. They only move horizontally during operation, are easy to control, and are easy to ensure dimensional accuracy.

[0040] like Figures 2 to 3 As shown, in the technical solution, the first mobile driving device 13 includes a first dovetail guide groove 133 provided at the bottom of the first die 11, a first dovetail guide rail 132 placed in the first dovetail guide groove 133, and a first nitrogen spring 131 connected to the first die 11 away from the second die 12. The axis of the first nitrogen spring 131 is parallel to the first dovetail guide rail 132 and is parallel to the axis direction of the end hole 301. The second mobile driving device 14 includes a second dovetail guide groove provided at the bottom of the second die 12, a second dovetail guide rail placed in the second dovetail guide groove, and a second nitrogen spring connected to the second die 12 away from the first die 11. The axis of the second nitrogen spring is parallel to the second dovetail guide rail and is parallel to the axis direction of the end hole 301. In the technical solution, the first mobile driving device 13 and the second mobile driving device 14 have a simple structure, do not need to be controlled by a controller or a control system, do not need power input, and only realize the relative movement of the first die 11 away from the second die 12 through two nitrogen springs. Through the arrangement of the dovetail guide rail and the dovetail guide groove, on the one hand, the moving direction is ensured, and on the other hand, the vertical upward limitation of the first die and the second die is achieved, thereby realizing the installation of the first die and the second die.

[0041] like Figure 5 to Figure 6As shown, in the present technical solution, the third mobile drive device 15 includes a die angled wedge mechanism 150 for realizing the movement of the first die 11 and the second die 12 away from each other. The die angled wedge mechanism 150 includes a first movable wedge block 151 disposed between the first die 11 and the second die 12, and the side surface of the first movable wedge block 151 away from the fixed die and parallel to the axis of the end hole 301 is provided with a first wedge surface 152 pointing upward, and a second movable wedge block 153 driven by a press is provided above the first wedge surface 152, and a second wedge surface 154 facing and parallel to the first wedge surface 152 is provided on the second movable wedge block 153, and the second movable wedge block 153 descends to drive the first movable wedge block 151 to move between the first die 11 and the second die 12, so as to complete the preparation for the movable die 10 to turn the hole. In this technical solution, the press drives the second movable wedge 153 to rise and fall, and pushes the first movable wedge 151 to enter between the first die 11 and the second die 12, so that the first die 11 and the second die 12 move away from each other, and the first die 11 and the second die 12 expand outward to the hole-turning position, completing the preparation of the movable die 10 for hole-turning.

[0042] like Figure 5 to Figure 6 As shown, in the technical solution, the first moving wedge 151 is also connected with a wedge reset mechanism, and the wedge reset mechanism includes a reset nitrogen spring 155 fixed to the bottom of the first moving wedge 151. The axis of the reset nitrogen spring is consistent with the movement direction of the first moving wedge 151, and the tail of the reset nitrogen spring 155 is arranged between the first die 11 and the second die 12 and fixed. The axis of the reset nitrogen spring 155 is arranged obliquely, so that the first moving wedge 151 is driven by the second moving wedge 153, and moves obliquely along the axis direction of the reset nitrogen spring 155, and enters between the first die 11 and the second die 12. In the process of the second moving wedge 153 resetting upward, the first moving wedge 151 is synchronously tilted and reset upward under the action of the reset nitrogen spring 155, leaving the remaining space between the first die 11 and the second die 12, so that the first die 11 and the second die 12 can move toward each other, retract, and prepare for unloading.

[0043] like Figure 1 and Figure 7As shown, in the technical solution, a first punch 200 and a second punch are respectively arranged on both sides of the hole-turning die 100. The first punch and the second punch have the same structure, and both include a punch wedge mechanism driven by a press, and a punch body and a pressure plate 205 driven by the punch wedge mechanism. The punch wedge mechanism includes a lifting wedge block 201 driven by a press, and a horizontally movable wedge block 202 driven by the lifting wedge block 201. The punch body includes a punch seat 203 fixedly connected to the horizontally movable wedge block 202, and a punch 204 fixedly connected to the punch seat 203 and in the same direction as the axis of the end hole 301. The pressure plate 205 is arranged on the side of the punch seat 203 facing the hole-turning die 100. The punch 204 passes through the pressure plate 205 and faces the hole-turning circular groove 110. A plurality of coil springs 206 are fixedly connected to the side of the pressing plate 205 opposite to the punch seat 203 , and the center line of the coil spring 206 is parallel to the axis of the end hole 301 .

[0044] Based on the above technical solution, the press drives the lifting wedge 201 to move downward, pushing the horizontal moving wedge 202 to move toward the side of the hole-turning die 100, and the horizontal moving wedge 202 drives the pressure plate 205 to press against the pressure plate pressing surface 303 of the swing arm 300 on the outer side of the hole-turning die 100, so as to fix and press the swing arm. Then the press drives the lifting wedge 201 to continue to move downward, pushing the horizontal moving wedge 202 to continue to move toward the side of the hole-turning die 100, and at this time, due to the action of the spiral spring 206, the pressure plate 205 remains motionless. The punch 204 continues to move forward under the movement of the horizontal moving wedge 202, enters the position of the hole-turning circular groove 110, and realizes the hole-turning operation of the end hole 301 of the swing arm 300. After the hole-turning is completed, the press drives the lifting wedge 201 to rise, and the first punch and the second punch both make the opposite movement to the hole-turning process, so that the first punch and the second punch are reset, and the outer area of ​​the swing arm 300 is released, which is convenient for the swing arm to unload.

[0045] A method for processing automobile parts, using the aforementioned automobile parts processing mold to perform hole turning processing on the end hole 301 of the swing arm 300, comprises the following steps:

[0046] S1, loading, installing and positioning the swing arm 300 to be punched on the fixed die 20.

[0047] S2, mold closing, the press moves downward, driving the third mobile drive device 15 and the die wedge mechanism 150 to work, so that the movable die is ready for hole turning, and the pressure plate rests on the installed swing arm 300.

[0048] S3, flanging, the press continues to move downward, the second movable wedge continues to descend, but the first movable wedge remains stationary, the pressing plate remains stationary, the punch seat and the punch continue to move toward the flanging die side, and the punch completes the flanging process.

[0049] S4, open the mold, and the press machine is reset upward. First, the punch is withdrawn and exits the hole-turning circular groove 110; then the first movable wedge block and the pressure plate are reset; then, the first die 11 and the second die 12 move downward, and the holes 301 at both ends of the swing arm 300 are respectively disengaged from the hole-turning circular grooves 110 on the first die 11 and the second die 12.

[0050] S5, unloading, the swing arm 300 on the fixed die is pushed vertically upward by the upward moving push plate, so that the swing arm 300 falls off the hole-flanging die, and finally moves out of the mold horizontally.

[0051] Based on the above technical solution, on the one hand, the simultaneous drilling operation of the two end holes on the swing arm is realized, ensuring the coaxiality of the rear end hole of the drilling. On the other hand, after the drilling is completed, the relative movement of the first die 11 and the second die 12 makes the width of the movable die 10 narrower, so that the two end holes on the swing arm after drilling are separated from the first die 11 and the second die 12 respectively, and the distance between the first die 11 and the second die 12 is less than the minimum distance between the two end holes, and then the swing arm is directly lifted upward to realize the unloading of the swing arm. The unloading operation of the swing arm is simple, the unloading device has a simple structure, the unloading operation control process is few and simple, and during the unloading, the swing arm will not be damaged, etc., ensuring the product quality and precision of the swing arm.

[0052] The technical solution of the present invention is described above in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A die for processing automobile parts, comprising a punching die for punching an end hole on a swing arm, characterized in that: The punching die comprises a fixed die for mounting the swing arm and a movable die arranged at the end of the fixed die and used for punching the end holes; the movable die comprises a first die and a second die which are arranged opposite to each other and respectively used for punching the end holes on the swing arm at the same time; A third moving drive device is provided between the first die and the second die, and the third moving drive device drives the first die and the second die to move synchronously and separately along the axis direction of the end hole to complete the preparation for hole turning; The first die and the second die are connected to a first moving drive device and a second moving drive device respectively, and the first moving drive device and the second moving drive device respectively drive the first die and the second die to move toward each other along the axis direction of the end hole to complete the swing arm unloading preparation; The first moving drive device comprises a first dovetail guide groove arranged at the bottom of the first die, a first dovetail guide rail placed in the first dovetail guide groove, and a first nitrogen spring connected to the side of the first die away from the second die, wherein the axis of the first nitrogen spring is parallel to the first dovetail guide rail and is parallel to the axis direction of the end hole; The second moving drive device comprises a second dovetail guide groove arranged at the bottom of the second die, a second dovetail guide rail placed in the second dovetail guide groove, and a second nitrogen spring connected to the side of the second die away from the first die, wherein the axis of the second nitrogen spring is parallel to the second dovetail guide rail and is parallel to the axis direction of the end hole; The third moving drive device includes a die wedge mechanism for realizing the separation movement of the first die and the second die; The die wedge mechanism comprises a first movable wedge block arranged between the first die and the second die, a side surface of the first movable wedge block away from the fixed die and parallel to the end hole axis is arranged with a first wedge surface upward, a second movable wedge block driven by a press is arranged above the first wedge surface, and a second movable wedge block is arranged with a second wedge surface facing and parallel to the first wedge surface, and the second movable wedge block descends to drive the first movable wedge block to move between the first die and the second die, so as to complete the preparation for the movable die to turn the hole; The first movable wedge is also connected to a wedge reset mechanism, which includes a reset nitrogen spring fixedly connected to the bottom of the first movable wedge, the axis of the reset nitrogen spring is consistent with the movement direction of the first movable wedge, and the tail of the reset nitrogen spring is arranged between the first die and the second die and fixed.

2. The automotive parts processing mold according to claim 1, characterized in that: The first die and the second die both include a die body and a circular hole-turning groove with a horizontal axis arranged on the die body for turning the end hole, and the axes of the two circular hole-turning grooves coincide with the axis of the end hole.

3. The automotive parts processing mold according to claim 2, characterized in that: A first punch and a second punch are respectively arranged on both sides of the punching die, and the first punch and the second punch both include a punch cam mechanism driven by a press machine, and a punch body and a press plate driven by the punch cam mechanism; The punch wedge mechanism includes a lifting wedge driven by a press and a horizontally movable wedge driven by the lifting wedge; the punch body includes a punch seat fixedly connected to the horizontally movable wedge, and a punch fixedly connected to the punch seat and aligned with the axis direction of the end hole; the pressing plate is arranged on the side of the punch seat facing the punching die, and the punch passes through the pressing plate and faces the punching circular groove; A plurality of coil springs are fixedly connected to the side surface of the pressing plate opposite to the punch seat, and the center lines of the coil springs are parallel to the axis of the end hole.

4. A method for processing automobile parts, characterized in that: The end hole punching process on the swing arm is performed by using the automobile parts processing mold according to claim 3, comprising the following steps: S1, loading, installing the swing arm to be turned on the fixed die; S2, mold closing, the press moves downward, driving the third moving drive device and the punch wedge mechanism to work, so that the moving die is ready for hole turning, and the pressure plate rests on the installed swing arm; S3, hole flipping, the press continues to move downward, the second moving wedge continues to descend, but the first moving wedge remains stationary, the pressing plate remains stationary, the punch seat and the punch continue to move toward the hole flipping die side, and the punch completes the hole flipping process; S4, open the mold, and the press machine is reset upward. First, the punch is withdrawn and exits the hole-turning circular groove; then the first movable wedge and the pressure plate are reset; then, the first die and the second die move downward, and the holes at both ends of the swing arm are respectively separated from the hole-turning circular grooves on the first die and the second die; S5, unloading, the push plate moving upward pushes the swing arm on the fixed die vertically upward, so that the swing arm falls off the hole-flipping die, and finally moves out of the mold horizontally.

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