Manufacturing method and tool of rotary swaging die

Abstract

The invention relates to the technical field of die machining, and discloses a manufacturing method and tool of a rotary swaging die, the rotary swaging die comprises a die main body, at least one end of the die main body is provided with a curved-surface groove part, the manufacturing method comprises the following steps that S1, a blank of the rotary swaging die is clamped through the tool, and the blank of the rotary swaging die is formed; a groove bottom bus of the curved groove part of the die main body is parallel to an electrode wire of the wire cutting machine; and S2, an electrode wire of a wire cutting machine moves in a curve path in a plane perpendicular to the groove bottom generatrix, and the curved-surface groove part is cut out. By the adoption of the linear cutting machining method, the machining efficiency and the machining precision of the mold are effectively improved, and therefore the production cost is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of die cutting, and more specifically, to a manufacturing method and tooling for a swaging die. Background Art

[0002] The swaging die is a key component in the swaging process, and its manufacturing quality directly affects the accuracy and performance of swaged products. However, there are usually multiple problems in the existing manufacturing of swaging dies.

[0003] The existing manufacturing methods for swaging dies mainly include:

[0004] 1. Rough machining with a drill press, rough machining with a grinding machine, and finish machining, with many processing steps;

[0005] 2. Low manufacturing efficiency: During the manufacturing process, the feed rate of the grinding wheel machining must be controlled below 0.5 mm because of the grinding process, and at the same time, the shape of the grinding wheel needs to be restored continuously, so the processing efficiency is extremely low.

[0006] 3. Low manufacturing accuracy: The wear of the grinding wheel during the manufacturing process will affect the dimensional accuracy of the die.

[0007] 4. High manufacturing cost: The slow processing efficiency, and each worker can only operate one grinding machine, ultimately resulting in high labor costs. Summary of the Invention

[0008] In view of the problems of low efficiency and low accuracy in the existing manufacturing of swaging dies, the present invention provides a manufacturing method and tooling for a swaging die, which can quickly complete the manufacturing of the swaging die with high accuracy and low cost.

[0009] The present invention is achieved through the following technical solutions:

[0010] A manufacturing method for a swaging die, the swaging die including a die body, and at least one end of the die body being provided with a curved groove portion, the manufacturing method including the following steps:

[0011] Step S1, using the tooling to clamp the blank of the swaging die, so that the bottom bus of the curved groove portion of the die body is parallel to the electrode wire of the wire cutting machine;

[0012] Step S2, the electrode wire of the wire cutting machine makes a curved path movement in a plane perpendicular to the bottom bus to cut out the curved groove portion.

[0013] Optionally, two or more of the blanks are arranged in the tooling along the direction parallel to the electrode wire, and according to the method of Step S2, a single curved path movement is made to cut out the curved groove portions of the two or more blanks.

[0014] Optionally, more than two of the blank parts are arranged in the tooling in the direction parallel to the electrode wire; and more than two of the blank parts are arranged in the direction perpendicular to the electrode wire. According to the method of step S2, in the plane perpendicular to the bottom bus of the groove, according to the number of horizontally arrayed blank parts, continuous curved path movements are made for the corresponding number of times to cut the curved groove parts of all the blank parts.

[0015] A tooling for the manufacturing method of the swaging die described above. The tooling includes a tooling main body and a clamping mechanism. The tooling main body is provided with at least one receiving groove for the blank part of the swaging die. When the blank part is placed in the receiving groove, the part to be machined of the blank part is located outside the tooling main body, and the bottom bus of the curved groove part to be machined of the blank part can be parallel to the electrode wire of the wire cutting machine; the clamping mechanism is used to fix the blank part in the receiving groove.

[0016] Optionally, more than two of the receiving grooves are arranged on the tooling main body in the direction parallel to the electrode wire.

[0017] Optionally, more than two of the receiving grooves are arranged on the tooling main body in the direction parallel to the electrode wire; and more than two of the receiving grooves are arranged in the direction perpendicular to the electrode wire.

[0018] Optionally, there are two tooling main bodies, including a first tooling main body and a second tooling main body. The first tooling main body and the second tooling main body have the receiving grooves arranged oppositely;

[0019] The clamping mechanism includes:

[0020] A clamping component. The clamping component has a pair of clamping arms that can move relative to each other, and can clamp and fix the blank part in the direction perpendicular to the electrode wire. And the clamping position of the clamping component is located at the eccentric position of the blank part;

[0021] A first linear drive component, arranged on the first tooling main body, for connecting with the clamping component, and can push the clamping component to move in the direction where the blank part exits the receiving groove; and

[0022] A first limiting component, which can limit the inclination angle of the blank after it exits the receiving groove along the eccentric position;

[0023] The second tooling main body is further connected with a second linear drive component, which is used to drive the second tooling main body to approach the first tooling main body, release the clamping arms, and the blank part can fall into the receiving groove of the second tooling main body.

[0024] Optionally, it further includes a guiding component, which includes a guiding rod, a first guiding wheel, a second guiding wheel and an elastic supporting component. The guiding rod is hinged to the second tooling main body. The first guiding wheel and the second guiding wheel are respectively connected to the movable end of the guiding rod. The guiding rod is simultaneously connected to the elastic supporting component. When the second tooling main body approaches the first tooling main body, the first guiding wheel can abut against the clamping component, so as to abut the second guiding wheel against the blank, and make the blank contact with the upper side of the receiving groove, so as to guide it into the receiving groove.

[0025] The technical solution of the present invention has at least the following beneficial effects:

[0026] The manufacturing method of the rotary forging die of the present invention cuts the curved surface by wire cutting, which can effectively reduce the processing procedures. The die blank is processed by a wire cutting machine tool to ensure the dimensional accuracy of die manufacturing. At the same time, with a special tooling, multiple blanks are clamped at one time, and taking advantage of the advantages of wire cutting, multiple blanks are processed at one time, so as to effectively improve the processing accuracy and reduce the production cost. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of the blank of the rotary forging die of the present invention;

[0028] Figure 2 It is a schematic structural diagram of the rotary forging die of the present invention;

[0029] Figure 3 It is a schematic structural diagram of the clamping state of the tooling in Embodiment 1 of the present invention;

[0030] Figure 4 It is a sectional view of the using state of the tooling in Embodiment 1 of the present invention;

[0031] Figure 5 It is a moving path diagram of the wire cutting electrode wire in Embodiment 1 of the present invention;

[0032] Figure 6 It is a side view of the clamping state of the first tooling main body in Embodiment 2 of the present invention;

[0033] Figure 7 It is a side view of the pushing-out state of the first tooling main body in Embodiment 2 of the present invention;

[0034] Figure 8 It is a side view of the state where the second tooling main body approaches the first tooling main body in Embodiment 2 of the present invention;

[0035] Figure 9 It is a side view of the state where the blank slides into the second tooling main body in Embodiment 2 of the present invention;

[0036] Figure 10Front view of the clamping assembly according to Embodiment 2 of the present invention.

[0037] Reference numerals:

[0038] 110 - blank, 120 - die body, 121 - curved surface groove portion, 200 - tooling body, 210 - first tooling body, 220 - second tooling body, 221 - elastic support member, 222 - guide rod, 223 - first guide wheel, 224 - second guide wheel, 410 - clamping assembly, 411 - clamping arm, 412 - elastic clamping member, 420 - first linear drive assembly, 430 - first limit assembly, 300 - electrode wire. Detailed implementation manners

[0039] Embodiment 1

[0040] Referring to Figures 1-5 , the manufacturing method of the rotary forging die of the present invention, the rotary forging die includes a die body 120, and at least one end of the die body 120 is provided with a curved surface groove portion 121. The die body 120 in this embodiment is a cuboid structure, and the curved surface groove portions 121 are symmetrically arranged at both ends, and the curved surface groove portion 121 is located on one of the two sides at both ends of the cuboid. For machining this curved surface groove portion 121 by traditional processing methods, it is necessary to first drill a rough hole position with a drilling machine, and then grind it bit by bit with a grinding machine. The grinding method is not only time-consuming, but also difficult to control the grinding accuracy. Because to grind out a curved surface structure similar to an arc surface, it is necessary to strictly control the feed rate. The operation is not only cumbersome, but also inefficient and inaccurate.

[0041] The present invention adopts the wire cutting method to effectively solve the above problems. The manufacturing method includes the following steps:

[0042] Step S1: Clamp the blank 110 of the rotary forging die by using tooling, so that the bottom bus of the curved surface groove portion 121 of the die body 120 is parallel to the electrode wire 300 of the wire cutting machine;

[0043] Step S2: The electrode wire 300 of the wire cutting machine makes a curved path movement in the plane perpendicular to the bottom bus, and cuts out the curved surface groove portion 121.

[0044] During the entire machining process, only need to clamp the blank 110 well. Of course, when designing the tooling, it is necessary to ensure that the state of the blank 110 after clamping is such that the bottom bus of the curved surface groove portion 121 of the die body 120 is parallel to the electrode wire 300 of the wire cutting machine. In this way, by controlling the movement of the electrode wire 300 along the plane and completing a curved path, a curved surface groove portion 121 of the die body 120 can be machined.

[0045] If more than two workpieces 110 are arranged in the tooling in the direction parallel to the electrode wire 300, according to the method of step S2, make a curved path movement once to cut the curved groove portions 121 of more than two workpieces 110.

[0046] If more than two workpieces 110 are arranged in the tooling in the direction parallel to the electrode wire 300; and more than two workpieces 110 are arranged in the direction perpendicular to the electrode wire 300, according to the method of step S2, in the plane perpendicular to the bottom bus of the groove, according to the number of horizontally arranged workpieces 110, make the corresponding number of continuous curved path movements, and the movement path is as Figure 5 shown, then the curved groove portions 121 of all workpieces 110 can be cut. The tooling fixture of this embodiment can clamp 12 workpieces 110 at one time. Then, in one-time wire cutting, the processing of up to 12 workpieces 110 can be completed, and the processing efficiency is increased several times, and the number of processed workpieces can be set according to needs.

[0047] The tooling of the manufacturing method of the rotary forging die of this embodiment includes a tooling main body 200 and a clamping mechanism. The tooling main body 200 is provided with at least one receiving groove for the workpiece 110 of the rotary forging die. When the workpiece 110 is placed in the receiving groove, the part to be processed of the workpiece 110 is located outside the tooling main body 200, and the bottom bus of the curved groove portion 121 to be processed of the workpiece 110 can be parallel to the electrode wire 300 of the wire cutting machine; the clamping mechanism is used to fix the workpiece 110 in the receiving groove, and the clamping mechanism can be realized by conventional means in the art. For example, a fixed baffle is arranged at one end of the receiving groove, and a movable baffle is arranged at the other end, and the clamping can be completed through an actuator such as a cylinder.

[0048] One implementation method of the tooling of this embodiment is to arrange more than two receiving grooves on the tooling main body 200 in the direction parallel to the electrode wire 300. For example, arrange 3 receiving grooves. Then, when the electrode wire 300 travels a curved path, 3 workpieces 110 can be processed.

[0049] Another implementation method of the tooling of this embodiment is to arrange more than two receiving grooves on the tooling main body 200 in the direction parallel to the electrode wire 300; and arrange more than two receiving grooves in the direction perpendicular to the electrode wire 300, as Figure 5 shown, arrange 3 in the direction parallel to the electrode wire 300 and 4 in the perpendicular direction. Then, a 3x4 matrix is formed. When the electrode wire 300 travels 4 curved paths, the processing of 12 workpieces 110 can be realized, and the efficiency is extremely high.

[0050] Embodiment 2

[0051] Refer to Figures 6-10, The difference between this embodiment and Embodiment 1 is that after machining one end, it is necessary to change the direction of the blank 110, and then install it on the wire cutting machine to continue cutting. Therefore, the operation is very cumbersome and the replacement is very inconvenient. This embodiment provides another tooling structure that can quickly reverse the blank 110 after cutting one end, and then realize the cutting operation of the other end.

[0052] Among them, there are two tooling bodies 200, including a first tooling body 210 and a second tooling body 220. The first tooling body 210 and the second tooling body 220 have receiving grooves arranged opposite to each other.

[0053] The clamping mechanism includes a clamping component 410, a first linear driving component 420, and a first limiting component 430. The clamping component 410 has a pair of clamping arms 411 that can move relative to each other, and can clamp and fix the blank 110 in the direction perpendicular to the electrode wire 300. And the clamping position of the clamping component 410 is located at the eccentric position of the blank 110. A double-acting cylinder can be used between the two clamping arms 411 to complete the relative movement; of course, a single-acting cylinder can also be used, with one end fixed on one of the clamping arms 411 and the other end realizing telescopic clamping. A clamping structure is arranged on the inner side of the clamping arm 411. The clamping structure includes an elastic clamping component 412, such as a spring. A bearing is arranged at the end of the spring. In this way, the spring can be compressed to clamp several blanks 110 between the clamping arms 411, and the clamping force is maintained by the spring. And this is the bearing, which is convenient for the blank 110 to deflect automatically under the action of gravity after leaving the receiving groove.

[0054] The first linear driving component 420 is arranged on the first tooling body 210 and is used to connect with the clamping component 410, and can push the clamping component 410 to move along the direction in which the blank 110 exits the receiving groove. When the blank 110 completes the first machining, the clamping component 410 can be pushed out by the first linear driving component 420. The pushing direction is arranged according to the inclination direction of the receiving groove. The first linear driving component 420 can adopt a cylinder.

[0055] The first limiting component 430 is a limiting rod arranged on the clamping arm 411. The limiting rod and the clamping arm 411 can be connected by a spring. After the clamping arm 411 is pushed out, the two approach each other. The position of the limiting rod can rotate to limit the inclination angle of the blank along the eccentric position after exiting the receiving groove, that is, after the blank 110 is removed from the receiving groove, due to the eccentric clamping design, the blank 110 will deflect due to its own weight. After deflection, it is placed on the limiting rod and maintains a specific angle.

[0056] The second tooling main body 220 is also connected with a second linear driving component, and the second linear driving component can be a cylinder (not shown in the figure), which is used to drive the second tooling main body 220 to approach the first tooling main body 210, release the clamping arm 411, and the blank 110 can fall into the receiving groove of the second tooling main body 220.

[0057] In order to ensure that the blank 110 can smoothly slide into the receiving groove of the second tooling main body 220, a guiding component is further arranged on the second tooling main body 220. The guiding component includes a guiding rod 222, a first guiding wheel 223, a second guiding wheel 224 and an elastic supporting component 221. The guiding rod 222 is hinged to the second tooling main body 220. The first guiding wheel 223 and the second guiding wheel 224 are respectively connected to the movable ends of the guiding rod 222. The guiding rod 222 is also connected with the elastic supporting component 221. When the second tooling main body 220 approaches the first tooling main body 210, the first guiding wheel 223 can abut against the clamping component 410, so as to abut the second guiding wheel 224 against the blank 110 and make the blank 110 contact with the upper side of the receiving groove, so as to guide it into the receiving groove.

[0058] The tooling of this embodiment can quickly reverse the blank 110, ensure that the second wire cutting can be completed in time, and the reversing process does not require manual operation. The whole process is simple and efficient.

Claims

1. A manufacturing method of a rotary forging die, the rotary forging die comprising a die body, and at least one end of the die body being provided with a curved groove portion, characterized in that, The manufacturing method includes the following steps: Step S1: Use a tooling fixture to clamp the blank of the rotary forging die, so that the bottom bus of the curved groove part of the die body is parallel to the electrode wire of the wire cutting machine; Step S2: The electrode wire of the wire cutting machine moves along a curved path in a plane perpendicular to the bottom bus, and cuts out the curved groove part.

2. The manufacturing method of the rotary forging die according to claim 1, characterized in that, In the tooling fixture, two or more of the blanks are arranged in the direction parallel to the electrode wire. According to the method of Step S2, make a single curved path movement to cut the curved groove parts of the two or more blanks.

3. The manufacturing method of the rotary forging die according to claim 1, characterized in that, In the tooling fixture, two or more of the blanks are arranged in the direction parallel to the electrode wire; and two or more of the blanks are arranged in the direction perpendicular to the electrode wire. According to the method of Step S2, in a plane perpendicular to the bottom bus, make a corresponding number of continuous curved path movements according to the number of horizontally arrayed blanks to cut the curved groove parts of all the blanks.

4. A tooling for the manufacturing method of the rotary forging die described in claim 1, characterized in that, The tooling fixture includes a tooling body and a clamping mechanism. The tooling body is provided with at least one receiving groove for the blank of the rotary forging die. When the blank is placed in the receiving groove, the part to be processed of the blank is located outside the tooling body, and the bottom bus of the curved groove part to be processed on the blank can be parallel to the electrode wire of the wire cutting machine; the clamping mechanism is used to fix the blank in the receiving groove.

5. The tooling according to claim 4, characterized in that, On the tooling body, two or more of the receiving grooves are arranged in the direction parallel to the electrode wire.

6. The tooling according to claim 4, characterized in that, On the tooling body, two or more of the receiving grooves are arranged in the direction parallel to the electrode wire; and two or more of the receiving grooves are arranged in the direction perpendicular to the electrode wire.

7. The tooling according to claim 6, characterized in that, There are two tooling bodies, including a first tooling body and a second tooling body. The first tooling body and the second tooling body have the receiving grooves arranged opposite to each other; The clamping mechanism includes: A clamping component, the clamping component has a pair of clamping arms that can move relative to each other, and can clamp and fix the blank in the direction perpendicular to the electrode wire. And the clamping position of the clamping component is at the eccentric position of the blank; A first linear driving component, arranged on the first tooling body, used to connect with the clamping component, and can push the clamping component to move along the direction in which the blank exits the receiving groove; and A first limiting component, which can limit the inclination angle of the blank along the eccentric position after it exits the receiving groove; The second tooling body is also connected with a second linear driving component, which is used to drive the second tooling body to approach the first tooling body, release the clamping arms, and the blank can fall into the receiving groove of the second tooling body.

8. The tooling according to claim 7, wherein It further includes a guiding component. The guiding component includes a guiding rod, a first guiding wheel, a second guiding wheel and an elastic supporting component. The guiding rod is hinged to the second tooling body. The first guiding wheel and the second guiding wheel are respectively connected to the movable end of the guiding rod. The guiding rod is also connected with the elastic supporting component. When the second tooling body approaches the first tooling body, the first guiding wheel can abut against the clamping component, so as to abut the second guiding wheel against the blank, and make the blank contact with the upper side of the receiving groove, so as to guide it into the receiving groove.

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