Machine tool door hinge machining die
By integrating stamping dies to achieve continuous forming of machine tool door hinges, the problems of cumbersome processes and poor consistency in traditional processing are solved, thereby improving production efficiency and product quality, and making it suitable for mass production.
Patent Information
- Application Number
- CN202512017010.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-03-03
AI Technical Summary
Traditional machine tool door hinge manufacturing processes are cumbersome, resulting in low production efficiency, poor product consistency, and a tendency to cause bumps and positioning errors, leading to quality problems.
Design an integrated stamping die, including a guide rod, a fixed die, a stamping die base, and first and second stamping blocks. The continuous forming of the workpiece is achieved by the reciprocating movement of the guide rod, eliminating the transfer and secondary positioning between processes. A two-step method is adopted, which first pre-bends the workpiece into a semi-ring and then presses it into a circle. The automated control is achieved by using an electromagnetic block and a driving component.
It improves production efficiency, ensures product shape stability and roundness, reduces the skill requirements and labor intensity of operators, and enhances production safety and automation.
Smart Images
Figure CN121589210A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of hinge processing technology, and in particular to a machining mold for machine tool door hinges. Background Technology
[0002] As a key load-bearing and moving component of machine tool protective doors, the quality of machine tool door hinges directly affects the smoothness of opening and closing, positioning accuracy, and overall stability of the machine tool door. These hinges typically include a cylindrical sleeve, or hinge lug, that needs to be rolled into a round shape. This sleeve is used to insert the hinge shaft and is the core structure for realizing the rotation function.
[0003] Traditionally, the processing of such cylindrical hinge sleeves mainly relies on multi-stage die stamping, using multiple independent dies in separate steps. First, a U-shaped bending die is used to stamp the flat blank into a semi-circle. Then, the semi-finished workpiece is transferred to another set of circular bending dies or by hand tools for a second bending to close the joint, ultimately forming a cylinder. This method is cumbersome, requiring multiple positioning and clamping operations, resulting in low production efficiency. Furthermore, the workpiece is prone to bumps and positioning errors during transfer, leading to poor product consistency, incomplete roundness, and noticeable gaps or overlaps at the joint, among other quality issues. Summary of the Invention
[0004] The purpose of this invention is to provide a machine tool door hinge processing mold that can automatically and continuously complete the entire forming process, eliminating the time required for workpiece transfer, secondary positioning, and clamping between processes, thus significantly shortening the production cycle time for a single piece and significantly improving production efficiency, making it very suitable for mass production.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a machine tool door hinge machining mold, including a machining table, A stamping die is provided on the processing table; The stamping die includes a guide rod, a fixed die, a stamping die base, a first stamping block, a second stamping block, and a stamping seat. The four corners of the stamping die base are respectively fitted onto the guide rods and can reciprocate along the guide rods. The stamping die base is connected to the lower part of the stamping seat, and the stamping seat is hinged to the lower part of the first stamping block, which is in the shape of a round rod. An inner groove for accommodating a second stamping block is provided between the stamping base and the first stamping block. A pressure rod penetrating the stamping base is connected to the upper end of the second stamping block, and the pressure rod is connected to the stamping plate. The upper surface of the fixed mold has a stamping groove corresponding to the first stamping block, and the stamping groove is a semi-annular groove. When the stamping die base moves, it drives the stamping base and the first stamping block to move, so that the first stamping block cooperates with the stamping groove to perform the initial stamping of the plate workpiece, forming a semi-circular workpiece with one end inclined inward towards the inside of the first stamping block. The second stamping block can cooperate with the outer wall of the first stamping block under the drive of the pressure rod to perform a second stamping on the workpiece after the first stamping, so that the workpiece covers the outer wall of the first stamping block to form a circular state.
[0006] Furthermore, the stamping die also includes a lower die base and an upper die base, with guide rods connecting the four corners of the lower die base and the upper die base, and the die is fixed on the lower die base.
[0007] Furthermore, an inner guide rod is provided between the lower die holder and the upper die holder, and the stamping die holder and the stamping plate are both sleeved on the inner guide rod.
[0008] Furthermore, a driver for driving the stamping die base to move is provided on the top of the upper die base.
[0009] Furthermore, baffles are symmetrically arranged on the upper surface of the fixed mold, and the symmetrical baffles are used to limit the workpiece.
[0010] Furthermore, the stamping base has a hinge groove and a semi-circular groove at both ends, and the inner wall of the hinge groove is hinged to one end of the first stamping block.
[0011] Furthermore, an electromagnetic block is provided in the semi-circular groove, and an inner magnetic block that is attracted to the adsorption magnetic block is provided in the other end of the first stamping block. One end of the electromagnetic block is connected to a power source.
[0012] Furthermore, the second stamping block is a semi-circular plate, which cooperates with the outer wall of the first stamping block to stamp one end of the workpiece into a semi-circular shape.
[0013] Furthermore, the stamping die also includes a driving component that drives the stamping plate to reciprocate, and the stamping plate drives the pressure rod and the second stamping block to move when it moves.
[0014] Furthermore, one end of the second stamping block is connected to a drive rack, and the first stamping block is connected to a hinge groove via a shaft, with a rotating component that meshes with the drive rack on the shaft.
[0015] The technical effects and advantages of this invention are as follows: The second stamping block of this invention, driven by a pressure bar, engages with the outer wall of the first stamping block to perform a secondary stamping on the workpiece after the initial stamping. This causes the workpiece to wrap around the outer wall of the first stamping block, forming a circular shape. The process employs a two-step method: first pre-bending into a semi-ring, then precision pressing into a circle. The first step, forming a semi-ring shape with one end slightly inclined, is optimized to provide a buffer for material rheology and stress release. The second stamping block performs targeted, localized secondary stamping, more effectively overcoming the material's springback tendency and forcing the workpiece to fully conform to the mold. The final formed workpiece tightly wraps around the outer wall of the first stamping block, exhibiting low residual stress, stable shape, near-ideal roundness, excellent assembly performance, and a compact structure. No additional external robotic arms or manual intervention are required for intermediate part flipping and repositioning. Through timing control of the stamping plates, it is easily integrated into automated stamping production lines, reducing the skill requirements and labor intensity for operators, and improving production safety. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the stamping die structure of the present invention; Figure 3 This is an exploded view of a partial structure of the stamping die of the present invention; Figure 4 This is a schematic diagram of the fixed mold structure of the present invention; Figure 5 This is a schematic diagram of the stamping seat and the first stamping block of the present invention; Figure 6 This is a schematic diagram of the first stamping block structure in Embodiment 2 of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A; Figure 8 This is a schematic diagram of the installation structure of the drive screw and inner guide rod in Embodiment 3 of the present invention.
[0017] In the picture: 1. Machining table; 2. Stamping die; 21. Guide rod; 22. Fixed die; 221. Stamping groove; 222. Baffle; 23. Stamping die base; 24. First stamping block; 241. Rotating part; 25. Second stamping block; 251. Pressure rod; 252. Stamping plate; 253. Drive rack; 26. Stamping seat; 261. Hinge groove; 262. Semi-arc groove; 27. Lower die base; 271. Inner guide rod; 2711. Inner annular groove; 2712. Sliding groove; 28. Upper die base; 3. Drive screw; 31. Annular block. Detailed Implementation
[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] Example 1: Refer to Figure 1 - Figure 5 The first embodiment of the present invention provides a machining mold for a machine tool door hinge, including a machining table 1. The machining table 1 is usually made of high-strength cast iron or steel plate, which has sufficient mass and rigidity to absorb and disperse the huge impact force and vibration generated during the stamping process, and ensure the stability of the entire mold system. The upper surface of the machining table 1 is precision machined to provide a precise reference plane for the installation of all subsequent components.
[0020] A stamping die 2 is provided on the processing table 1; The stamping die 2, as the core function, is mounted on the processing table 1. It is composed of a guide rod 21 that performs the guiding function, a fixed die 22 that serves as the lower die part, a stamping die base 23 that serves as the main moving part of the upper die, and a stamping seat 26 integrated below the die base that performs the stamping action, a first stamping block 24, and a second stamping block 25. There are four guide rods 21, which are vertically symmetrical and fixedly installed perpendicular to the machining table 1. They form the skeleton of the mold movement. The surface of the guide rods 21 has been hardened and precision ground, and has extremely high straightness, hardness and smoothness.
[0021] The stamping die base 23 is the upper movable plate of the die. Its four corners are precisely machined with guide sleeves or guide holes that match the guide rod 21, and it fits over the guide rod 21. This ensures that the stamping die base 23 can only reciprocate strictly along the vertical direction defined by the guide rod 21, eliminating the possibility of lateral offset or torsion. This is crucial for ensuring the alignment accuracy of the upper and lower dies, preventing die damage, and preventing workpiece eccentricity. The four corners of the stamping die base 23 are respectively fitted onto the guide rod 21, and can reciprocate along the guide rod 21. The fixed mold 22 is rigidly connected to the designated position on the processing table 1 by fasteners such as bolts.
[0022] The stamping die base 23 is connected to the lower part of the stamping base 26, and the stamping base 26 is hinged to the lower part of the first stamping block 24, which is in the shape of a round rod. An inner groove for accommodating a second stamping block 25 is provided between the stamping base 26 and the first stamping block 24. The upper end of the second stamping block 25 is connected to a pressure rod 251 that penetrates the stamping base 26. The pressure rod 251 is connected to the stamping plate 252. The upper end face of the fixed mold 22 is provided with a stamping groove 221 corresponding to the first stamping block 24. The stamping groove 221 is a semi-annular groove. When the stamping die base 23 moves, it drives the stamping base 26 and the first stamping block 24 to move, so that the first stamping block 24 cooperates with the stamping groove 221 to perform the initial stamping of the plate workpiece, forming a semi-annular workpiece with one end inclined inward towards the first stamping block 24. Driven by the pressure rod 251, the second stamping block 25 engages with the outer wall of the first stamping block 24 to perform a secondary stamping on the workpiece after the initial stamping. This causes the workpiece to wrap around the outer wall of the first stamping block 24, forming a circular shape. The process employs a two-step method: first pre-bending into a semi-ring, then precision pressing into a circle. The first step, forming a semi-ring shape with one end slightly tilted, is optimized to provide a buffer for material rheology and stress release. The second stamping block 25 performs targeted, localized secondary stamping, more effectively overcoming the material's springback tendency and forcing the workpiece to fully conform to the mold. The final formed workpiece tightly wraps around the outer wall of the first stamping block 24, exhibiting low residual stress, stable shape, near-ideal roundness, excellent assembly performance, and a compact structure. No additional external robotic arms or manual intervention are required for intermediate part flipping and repositioning. Through the timing control of the stamping plate 252, it is easily integrated into automated stamping production lines, reducing the skill requirements and labor intensity for operators, and improving production safety.
[0023] Place the flat strip of material used to make the hinge on the fixed mold 22 and align the part to be bent with the stamping groove 221.
[0024] The press drives the stamping die holder 23 to move downward along the guide rod 21.
[0025] The stamping die holder 23 drives the stamping seat 26 and the first stamping block 24 hinged to it to move downward together.
[0026] The cylindrical surface of the first stamping block 24 gradually closes with the stamping groove 221 on the fixed mold 22, thereby squeezing and bending the sheet material in the middle.
[0027] At the end of the stroke, the sheet metal is bent and wrapped around the lower half of the first stamping block 24, forming a semi-circular workpiece. Due to the geometric design of the mold and the springback characteristics of the material, one end of the workpiece will be slightly inclined inward towards the first stamping block 24, that is, the opening is not completely closed and one side is slightly inward.
[0028] After the initial stamping is completed, the main stamping stroke may pause slightly or enter a pressure holding phase.
[0029] At this time, the stamping plate 252 is triggered, pushing the pressure rod 251 downward. The pressure rod 251 transmits force to the second stamping block 25, driving it to move downward from the inner groove between the stamping seat 26 and the first stamping block 24.
[0030] The movement trajectory of the second stamping block 25 is designed such that its working surface can closely fit the outer wall of the first stamping block 24 and apply a radially inward pressing force to the workpiece from that slightly inclined opening side.
[0031] This force pushes the open end of the workpiece, which is already in a semi-circular shape, causing it to continue to plastically deform and completely wrap around the cylindrical surface of the first stamping block 24.
[0032] Ultimately, under the combined action of the first stamping block 24 and the second stamping block 25, the workpiece is completely rolled into a circle and tightly wrapped around the outer wall of the first stamping block 24, forming a complete cylindrical body, namely the hinge sleeve part of the machine tool door hinge.
[0033] This mold integrates the pre-bending and final rolling of the hinge cylinder into the stamping die 2. Through a single downward stroke of the stamping die base 23, in conjunction with the internally driven second stamping block 25, the entire forming process can be completed automatically and continuously. This eliminates the time required for workpiece transfer, secondary positioning, and clamping between processes, significantly shortening the production cycle time for single pieces and greatly improving production efficiency, making it ideal for mass production.
[0034] The second stamping block 25 is precisely driven by the pressure rod 251. Its movement path is preset, which can ensure that the fit relationship with the outer wall of the first stamping block 24 is constant. This makes the force and position of each secondary stamping completely consistent, thereby ensuring that the inner diameter of all processed hinge cylinders is determined by the diameter of the first stamping block 24, resulting in stable forming, good roundness, strong product dimensional consistency, and high interchangeability.
[0035] The stamping die 2 also includes a lower die base 27 and an upper die base 28. The four corners of the lower die base 27 and the upper die base 28 are connected by guide rods 21, and the fixed die 22 is fixed on the lower die base 27.
[0036] An inner guide rod 271 is provided between the lower die holder 27 and the upper die holder 28. The stamping die holder 23 and the stamping plate 252 are both fitted onto the inner guide rod 271. The addition of the inner guide rod 271 provides internal guidance for the stamping die holder 23 and the stamping plate 252 in the central area of the die. A driver for driving the stamping die holder 23 to move is provided on the top of the upper die holder 28.
[0037] Symmetrical baffles 222 are arranged on the upper surface of the fixed mold 22. The symmetrical baffles 222 are used to limit the workpiece. The symmetrical baffles 222 on the fixed mold 22 provide a clear and reliable physical positioning reference for the operator or automated feeding mechanism. This enables rapid and accurate positioning of the blank, greatly shortens the time for manual placement and adjustment, reduces the scrap caused by inaccurate positioning, and is conducive to achieving stable continuous production and automated integration.
[0038] The stamping base 26 has a hinge groove 261 and a semi-circular groove 262 at both ends. The inner wall of the hinge groove 261 is hinged to one end of the first stamping block 24. A magnetic block is installed in the semi-circular groove 262, and an inner magnetic block that attracts the magnetic block is installed in the other end of the first stamping block 24. One end of the magnetic block is connected to a power source. Before the mold starts working and the initial stamping is performed, the control system supplies power to the magnetic block, causing it to generate a strong electromagnetic attraction. This attraction force attracts the inner magnetic block at the end of the first stamping block 24, firmly attracting and locking that end of the first stamping block 24 in the semi-circular groove 262. At this time, the first stamping block 24 is rigidly fixed relative to the stamping seat 26 and cannot rotate around the hinge point. This ensures that when the first stamping block 24 cooperates with the stamping groove 221 of the fixed mold 22 to complete the semi-circular stamping, its posture is stable and the forming force is direct, guaranteeing the shape accuracy and consistency of the initial stamping. When the initial stamping is completed and a secondary rolling stamping is required, the control system cuts off the power supply to the electromagnetic block, and the electromagnetic attraction disappears instantly or weakens significantly. At this time, the end of the first stamping block 24 that was originally attracted and locked is released. During the process of the second stamping block 25 moving downward and pressing the workpiece, the workpiece applies a torque to the end of the first stamping block 24, causing it to rotate around the hinge axis at the hinge groove 261. Since the lock has been released, the first stamping block 24 can rotate slightly and controllably in response to this torque, thereby cooperating with the second stamping block 25 to smoothly and finally roll the semi-circular workpiece into a complete cylindrical shape.
[0039] After the second stamping is completed, the second stamping block 25 retracts and the first stamping block 24 resets and moves upward. At this time, the solenoid block is in a de-energized state, and the first stamping block 24 rotates around the hinge axis, causing it to tilt. One end of the first stamping block 24 is in a disconnected state, and the formed workpiece can slide along the tilted first stamping block 24 to be unloaded from the disconnected end. At this time, the solenoid block can be energized again to re-attract and reset the first stamping block 24 to the initial closed position, preparing for the next work cycle.
[0040] By utilizing the de-energized state of the electromagnetic block and the hinged structure of the first stamping block 24, the automatic detachment of the workpiece after forming is achieved. This eliminates the need for manual workpiece removal or the use of complex robotic arms required by traditional molds, enabling the entire process from feeding and forming to unloading to be carried out continuously and automatically, greatly improving production cycle time and automation level.
[0041] The second stamping block 25 is a semi-circular plate, which cooperates with the outer wall of the first stamping block 24 to stamp one end of the workpiece into a semi-circular shape.
[0042] The stamping die 2 also includes a driving component that drives the stamping plate 252 to reciprocate. When the stamping plate 252 moves, it drives the pressure rod 251 and the second stamping block 25 to move.
[0043] Example 2: Refer to Figure 6 - Figure 7 This is the second embodiment of the present invention. This embodiment differs from the first embodiment in that the driving component includes a driving motor connected to one end of the inner guide rod 271 and a driving screw 3 disposed inside the inner guide rod 271. An inner annular groove 2711 is formed inside the inner guide rod 271. A plurality of sliding grooves 2712 are formed on the outer wall of the inner annular groove 2711. An annular block 31 that slides in the sliding groove 2712 is provided on the outer wall of the driving screw 3. The annular block 31 is provided with threads. The bottom end of the driving screw 3 is connected to the inner wall of the inner annular groove 2711 by a spring.
[0044] When the stamping seat 26 presses down, it drives the stamping plate 252 and the second stamping block 25 to move down together. The stamping plate 252 has a hole and slot that are threaded to match the drive screw 3. When the stamping plate 252 moves down, it is pre-aligned with the top of the drive screw 3. During the stamping process of the first stamping block 24, it drives the drive screw 3 to move in the inner ring groove 2711. When the first stamping block 24 completes the stamping, the drive motor drives the inner guide rod 271 to rotate. The inner guide rod 271 drives the drive screw 3 to rotate through the sliding groove 2712, which in turn drives the stamping plate 252 to move in the drive screw 3, thereby realizing the downward stamping of the second stamping block 25.
[0045] The drive screw 3 system is integrated within the inner guide rod 271. The inner guide rod 271 not only continues to provide precise guidance for the stamping die holder 23 and the stamping plate 252, but its internal inner ring groove 2711 and sliding groove 2712 also constitute the motion track and transmission interface for the drive screw 3. This rod-within-a-rod design integrates rotary drive, precision transmission, and linear guidance within an extremely limited space, avoiding the structural bulk and interference risks associated with external drive devices. This results in a more refined and compact overall die layout. When the stamping die holder 26 presses down for the initial stamping, the stamping plate 252 moves down synchronously, aligning and engaging with the top of the drive screw 3. This process is not actively driven; rather, the drive screw 3 passively moves down with the stamping plate 252 via a flexible connection to the bottom spring, sliding within the inner ring groove 2711. This stores potential energy for the next action and prepares for precise mechanical engagement. This ensures that the starting point of the secondary stamping strictly corresponds to the completion position of the primary stamping. Upon completion of the initial stamping, the drive motor starts, rotating the inner guide rod 271. This rotational motion is transmitted seamlessly to the drive screw 3 via the engagement of the sliding groove 2712 and the annular block 31. Because the slots in the stamping plate 252 are threaded into the drive screw 3, and the stamping plate 252 itself is guided by the outer wall of the inner guide rod 271 and cannot rotate, the rotation of the drive screw 3 is precisely converted into independent, controllable downward feed motions of the stamping plate 252 and the second stamping block 25, achieving secondary precision pressing. This time-separated control method allows for independent optimization and precise programming of the rhythm, force, and stroke of both stamping steps, resulting in greater process adaptability.
[0046] Example 3: Refer to Figure 8This is the third embodiment of the present invention. This embodiment differs from the first embodiment in that one end of the second stamping block 25 is connected to a drive rack 253, and the first stamping block 24 is connected to the hinge groove 261 via a shaft. A rotating component 241, which meshes movably with the drive rack 253, is sleeved on the shaft. The rotating component 241 encloses an upper connecting rod connected to the shaft via a chain, a ratchet assembly sleeved on the upper connecting rod, and a gear sleeved on the ratchet assembly and meshing movably with the drive rack 253. When the second… When the second stamping block 25 moves downwards for stamping, it only drives the ratchet assembly to rotate. When the second stamping block 25 moves upwards to reset, the ratchet assembly drives the shaft to rotate, which in turn causes the first stamping block 24 to tilt. It should be noted that the shaft is connected to the inner wall of the hinge groove 261 through a torsion spring, which can automatically drive the first stamping block 24 to reset. Through purely mechanical components such as the drive rack 253, rotating part 241, and ratchet assembly, the vertical linear motion of the second stamping block 25 is converted into torque to drive the shaft to rotate. The power source is directly taken from the return force of the main stamping stroke, which is highly efficient in energy utilization and has a straightforward and reliable transmission path. Through mechanical forced transmission, the first stamping block 24 is deterministically tilted at a sufficient angle during the return phase of each work cycle. This action is positive and powerful, which can effectively break the vacuum adsorption or static friction between the workpiece and the stamping block, greatly improving the certainty of automatic and reliable detachment of the round workpiece and avoiding workpiece lifting or jamming.
[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A machining mold for machine tool door hinges, comprising a machining table (1), characterized in that, A stamping die (2) is provided on the processing table (1); The stamping die (2) includes a guide rod (21), a fixed die (22), a stamping die base (23), a first stamping block (24), a second stamping block (25), and a stamping seat (26). The four corners of the stamping die base (23) are respectively fitted onto the guide rod (21) and can reciprocate along the guide rod (21). The stamping die base (23) is connected to the stamping base (26) below, and the stamping base (26) is hinged to the bottom of the first stamping block (24), which is a round rod. An inner groove for accommodating a second stamping block (25) is provided between the stamping base (26) and the first stamping block (24). The upper end of the second stamping block (25) is connected to a pressure rod (251) that penetrates the stamping base (26). The pressure rod (251) is connected to the stamping plate (252). The upper surface of the fixed mold (22) is provided with a stamping groove (221) corresponding to the first stamping block (24), and the stamping groove (221) is a semi-annular groove. When the stamping die base (23) moves, it drives the stamping base (26) and the first stamping block (24) to move, so that the first stamping block (24) cooperates with the stamping groove (221) to perform the initial stamping of the plate workpiece, forming a semi-circular workpiece with one end inclined into the first stamping block (24). The second stamping block (25) can cooperate with the outer wall of the first stamping block (24) under the drive of the pressure rod (251) to perform a second stamping on the workpiece after the first stamping, so that the workpiece covers the outer wall of the first stamping block (24) to form a circular state.
2. The machine tool door hinge processing mold according to claim 1, characterized in that, The stamping die (2) also includes a lower die base (27) and an upper die base (28). The four corners of the lower die base (27) and the upper die base (28) are connected by guide rods (21), and the fixed die (22) is fixed on the lower die base (27).
3. The machine tool door hinge processing mold according to claim 2, characterized in that, An inner guide rod (271) is provided between the lower mold base (27) and the upper mold base (28), and the stamping mold base (23) and the stamping plate (252) are both sleeved on the inner guide rod (271).
4. The machine tool door hinge processing mold according to claim 3, characterized in that, The upper die holder (28) is provided with a driver for driving the stamping die holder (23) to move.
5. A machine tool door hinge processing mold according to claim 1, characterized in that, The fixed mold (22) has baffles (222) symmetrically arranged on the upper surface. The symmetrical baffles (222) are used to limit the workpiece.
6. A machine tool door hinge processing mold according to claim 1, characterized in that, The stamping base (26) has a hinge groove (261) and a semi-arc groove (262) at both ends, and the inner wall of the hinge groove (261) is hinged to one end of the first stamping block (24).
7. A machine tool door hinge processing mold according to claim 6, characterized in that, An electromagnetic block is provided inside the semi-circular groove (262), and an inner magnetic block that is attracted to the adsorption magnetic block is provided inside the other end of the first stamping block (24). One end of the electromagnetic block is connected to a power source.
8. A machine tool door hinge processing mold according to claim 1, characterized in that, The second stamping block (25) is a semi-circular plate, which cooperates with the outer wall of the first stamping block (24) to stamp one end of the workpiece into a semi-circular shape.
9. A machine tool door hinge processing mold according to claim 1, characterized in that, The stamping die (2) also includes a driving component that drives the stamping plate (252) to reciprocate. When the stamping plate (252) moves, it drives the pressure rod (251) and the second stamping block (25) to move.
10. A machine tool door hinge processing mold according to claim 9, characterized in that, The second stamping block (25) is connected to a drive rack (253) at one end, and the first stamping block (24) is connected to the hinge groove (261) through a shaft, and a rotating part (241) that is movably engaged with the drive rack (253) is sleeved on the shaft.