A tungsten steel precision punching die
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-21
- Publication Date
- 2026-08-14
AI Technical Summary
然而，现有钨钢冲孔模具存在不足之处，当需要再长条形工件上连续冲孔时，需人工操作进给，将工件按照相等的长度推进至冲床中
[0010]与现有技术相比，本实用新型的有益效果是：通过在延长杆的端部连接支撑柱，支撑柱支撑延长杆，保持延长杆水平。步进电机驱动主动轮、传动带、从动轮和第一丝杆转动，带动第一螺母座、连接柱、夹具和工件沿第一螺母座的轴向运动。延长杆限制夹具和连接柱转动。步进电机运行后停止一段时间，然后再次运行后停止一段时间，如此周而复始，间歇性启动和停止。在停止期间，液压冲头驱动钨钢冲针下压，钨钢冲针穿过冲孔和夹具，在工件上冲压形成孔。之后液压冲头驱动钨钢冲针上升。
Smart Images
Figure CN224629703U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a tungsten steel precision punching die, and more particularly to its feeding mechanism, belonging to the field of punching dies. Background Technology
[0002] Tungsten carbide dies, with their high hardness, wear resistance, and thermal stability, have become core components in precision stamping, die casting, and other fields. Their structural design must balance material properties with operating conditions. They are widely used in the manufacture of lead frames, automotive parts, and other applications. However, existing tungsten carbide punching dies have shortcomings. When continuous punching is required on long, strip-shaped workpieces, manual feeding is necessary to advance the workpiece into the press in equal lengths. The lack of a continuous feed mechanism results in low processing efficiency. Utility Model Content
[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a tungsten steel precision punching die, so that workpieces of equal length can be continuously fed into the punch press for processing.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a tungsten carbide precision punching die, comprising a punch press, a tungsten carbide punch, a hydraulic punch, a guide rod, a punch hole, a discharge groove, a core, and an extension rod. The top of the punch press is connected to the hydraulic punch via the guide rod. A punch hole is provided in the middle of the punch press, and the tungsten carbide punch is inserted into the punch hole. The hydraulic punch drives the tungsten carbide punch to move vertically. A first through hole penetrates the side of the punch press, and a core is provided in the first through hole. A clearance hole for the tungsten carbide punch to pass through is provided in the center of the core. An extension rod is connected to the end of the core. The discharge groove is connected to the end of the punch hole. The extension rod is fixedly connected to a support column at its end. Rotary seats are provided at the middle of the support column and on the side of the punch press. A first lead screw is rotatably connected between a pair of rotating seats. A first nut seat is screwed onto the first lead screw, and a driven wheel is connected to the end of the first lead screw. A stepper motor and a second through hole are provided at the bottom of the support column. The output shaft of the stepper motor passes through the second through hole and is connected to a driving wheel. A transmission belt is sleeved between the support column and the driven wheel. A first nut seat is screwed onto the first lead screw, and a connecting column is fixedly connected to the first nut seat. A clamp is connected to the top of the connecting column, and a square workpiece is clamped in the clamp. The workpiece is sleeved on the core and the extension rod.
[0005] The present invention is further configured such that: a guide plate is fixedly connected to the middle of the tungsten steel punch, and sliding holes are provided at both ends of the guide plate, which are slidably connected to the guide rod; a spring is provided between the guide plate and the punch, and the spring is sleeved on the guide rod.
[0006] The present invention is further configured such that: the fixture includes a base plate, a first side plate, a second side plate, a second nut seat, a second lead screw, and a crank handle; the first side plate and the second side plate are vertically connected to both ends of the base plate; the second nut seat is located in the middle of the second side plate; the second lead screw is screwed into the second nut seat; one end of the second lead screw abuts against the workpiece; and the other end is fixedly connected to the crank handle.
[0007] The present invention is further configured such that the base plate is welded and fixedly connected to the connecting column.
[0008] A further feature of this invention is that the discharge chute is inclined. The end of the discharge chute is located on the side of the punch press.
[0009] A further feature of this invention is that the extension rod is parallel to the first lead screw and is horizontally positioned.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: By connecting a support column to the end of the extension rod, the support column supports the extension rod and keeps it horizontal. A stepper motor drives the driving wheel, transmission belt, driven wheel, and first lead screw to rotate, causing the first nut seat, connecting column, fixture, and workpiece to move axially along the first nut seat. The extension rod restricts the rotation of the fixture and connecting column. The stepper motor runs and then stops for a period of time, then runs again and stops for a period of time, repeating this cycle intermittently. During the stop period, a hydraulic punch drives a tungsten carbide punch to press down, the tungsten carbide punch passing through the punch hole and fixture to punch a hole in the workpiece. Afterwards, the hydraulic punch drives the tungsten carbide punch to rise. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of a tungsten carbide precision punching die according to a preferred embodiment of the present invention; Figure 2 This is a structural diagram of the connecting column and the clamp.
[0012] In the diagram: 1. Punch press; 2. Tungsten carbide punch; 3. Hydraulic punch; 4. Guide rod; 5. Spring; 6. Guide plate; 7. Sliding hole; 8. Punch hole; 9. Discharge groove; 10. Support column; 11. Workpiece; 12. Connecting column; 13. Extension rod; 14. Fixture; 15. First nut seat; 16. First lead screw; 17. Rotating seat; 18. Driven wheel; 19. Transmission belt; 20. Driving wheel; 21. Stepper motor; 22. Second through hole; 23. Core; 24. Clearance hole; 25. First through hole; 141. Base plate; 142. First side plate; 143. Second side plate; 144. Second nut seat; 145. Second lead screw; 146. Handle. Detailed Implementation
[0013] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.
[0014] See appendix Figure 1-2 As shown, a tungsten carbide precision punching die in this embodiment includes a punch press 1, a tungsten carbide punch 2, a hydraulic punch 3, a guide rod 4, a punch hole 8, a discharge groove 9, a core 23, and an extension rod 13. The top of the punch press 1 is connected to the hydraulic punch 3 via the guide rod 4. The punch hole 8 is provided in the middle of the punch press 1, and the tungsten carbide punch 2 is inserted into the punch hole 8. The hydraulic punch 3 drives the tungsten carbide punch 2 to move vertically. A first through hole 25 penetrates the side of the punch press 1, and a core 23 is provided in the first through hole 25. The center of the core 23 is provided for the tungsten carbide punch. 2. The end of the core 23 is connected to the extension rod 13 through the clearance hole 24; the discharge groove 9 is connected to the end of the punch 8; the end of the extension rod 13 is fixedly connected to the support column 10, and the middle of the support column 10 and the side of the punch 1 are provided with rotating seats 17. A first lead screw 16 is rotatably connected between a pair of rotating seats 17. A first nut seat 15 is screwed onto the first lead screw 16, and the end of the first lead screw 16 is connected to the driven wheel 18; a stepper motor 21 and a second through hole 22 are provided at the bottom of the support column 10. Stepper motor 21 is fixedly connected to support column 10. The output shaft of stepper motor 21 passes through second through hole 22 and is connected to drive wheel 20. A transmission belt 19 is sleeved between support column 10 and driven wheel 18. A first nut seat 15 is screwed onto first lead screw 16. A connecting column 12 is fixedly connected to first nut seat 15. A clamp 14 is connected to the top of connecting column 12. A square workpiece 11 is clamped in clamp 14. The workpiece 11 is sleeved on the core 23 and the extension rod 13.
[0015] A support column 10 is connected to the end of the extension rod 13, which supports the extension rod 13 and keeps it horizontal. A stepper motor 21 drives the drive wheel 20, transmission belt 19, driven wheel 18, and first lead screw 16 to rotate, causing the first nut seat 15, connecting column 12, clamp 14, and workpiece 11 to move axially along the first nut seat 15. The extension rod 13 restricts the rotation of the clamp 14 and connecting column 12. The stepper motor 21 runs and then stops for a period of time, then runs again and stops for a period of time, repeating this cycle intermittently. During the stop period, the hydraulic punch 3 drives the tungsten carbide punch 2 downwards, which passes through the punch hole 8 and clamp 14, punching a hole in the workpiece 11. Afterwards, the hydraulic punch 3 drives the tungsten carbide punch 2 upwards.
[0016] To facilitate the return of the tungsten carbide punch 2 to its initial position, this invention further comprises: a guide plate 6 fixedly connected to the middle of the tungsten carbide punch 2; sliding holes 7 at both ends of the guide plate 6, which are slidably connected to the guide rod 4; a spring 5 is provided between the guide plate 6 and the punch press 1, and the spring 5 is sleeved on the guide rod 4. The spring 5 applies an upward elastic force to the guide plate 6, driving the guide plate 6 and the tungsten carbide punch 2 to move upward together until the tungsten carbide punch 2 leaves the clearance hole 24.
[0017] To facilitate quick and secure clamping of the workpiece 11, the present invention further comprises: a base plate 141, a first side plate 142, a second side plate 143, a second nut seat 144, a second lead screw 145, and a crank handle 146. The first side plate 142 and the second side plate 143 are vertically connected to both ends of the base plate 141, and the second nut seat 144 is located in the middle of the second side plate 143. The second lead screw 145 is screwed into the second nut seat 144. One end of the second lead screw 145 abuts against the workpiece 11, and the other end is fixedly connected to the crank handle 146. By rotating the crank handle 146, the second lead screw 145 rotates in the second nut seat 144 and advances along the axis of the second lead screw 145 until the end of the second lead screw 145 tightly clamps the workpiece 11 between the first side plate 142, thus securely clamping the workpiece 11.
[0018] The present invention is further configured such that the base plate 141 is welded and fixedly connected to the connecting column 12, resulting in a more secure connection. The discharge chute 9 is inclined, with its end located on the side of the punch press 1. This facilitates the discharge of waste material formed during punching to the side of the punch press 1 for collection. The extension rod 13 is parallel to the first lead screw 16 and is horizontally positioned.
[0019] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.
Claims
1. A precision punching die for tungsten steel, comprising a punch press (1), a tungsten steel punch (2), a hydraulic punch (3), a guide rod (4), a punch (8), a discharge groove (9), a core (23), and an extension rod (13). The top of the punch press (1) is connected to the hydraulic punch (3) via the guide rod (4). The punch (8) is provided in the middle of the punch press (1). The tungsten steel punch (2) is inserted into the punch (8). The hydraulic punch (3) drives the tungsten steel punch (2) to move vertically. A first through hole (25) penetrates the side of the punch press (1). The core (23) is provided in the first through hole (25). The center of the core (23) is provided with a clearance hole (24) for the tungsten steel punch (2) to pass through. The end of the core (23) is connected to the extension rod (13). The discharge groove (9) is connected to the end of the punch (8). characterized in that The end of the extension rod (13) is fixedly connected to a support column (10). Rotary seats (17) are provided in the middle of the support column (10) and on the side of the punch press (1). A first lead screw (16) is rotatably connected between a pair of rotating seats (17). A first nut seat (15) is screwed onto the first lead screw (16). A driven wheel (18) is connected to the end of the first lead screw (16). A stepper motor (21) and a second through hole (22) are provided at the bottom of the support column (10). The output shaft passes through the second through hole (22) and is connected to the drive wheel (20). A transmission belt (19) is sleeved between the support column (10) and the driven wheel (18). A first nut seat (15) is screwed onto the first lead screw (16). A connecting column (12) is fixedly connected to the first nut seat (15). A clamp (14) is connected to the top of the connecting column (12). A square workpiece (11) is clamped in the clamp (14). The workpiece (11) is sleeved on the core (23) and the extension rod (13).
2. The tungsten steel precision piercing die according to claim 1, wherein, A guide plate (6) is fixedly connected to the middle of the tungsten steel punch (2). Sliding holes (7) are provided at both ends of the guide plate (6). The sliding holes (7) are slidably connected to the guide rod (4). A spring (5) is provided between the guide plate (6) and the punch (1). The spring (5) is sleeved on the guide rod (4).
3. The tungsten steel precision piercing die of claim 1, wherein, The fixture (14) includes a base plate (141), a first side plate (142), a second side plate (143), a second nut seat (144), a second lead screw (145), and a crank handle (146). The first side plate (142) and the second side plate (143) are vertically connected to the two ends of the base plate (141), and the second nut seat (144) is located in the middle of the second side plate (143). The second lead screw (145) is screwed into the second nut seat (144). One end of the second lead screw (145) abuts against the workpiece (11), and the other end is fixedly connected to the crank handle (146).
4. The tungsten steel precision piercing die of claim 3, wherein, The base plate (141) is welded and fixedly connected to the connecting column (12).
5. The tungsten steel precision piercing die of claim 1, wherein, The discharge trough (9) is inclined; the end of the discharge trough (9) is located on the side of the punch press (1).
6. The tungsten steel precision piercing die of claim 1, wherein, The extension rod (13) is parallel to the first lead screw (16) and is horizontally arranged.