A punch grinding tool

Abstract

The utility model relates to the field of stamping die maintenance equipment, especially to the punch field, concretely relates to a punch grinding frock, solves the problem of the existing technology punch frock fixed not firm, the operation efficiency is low, through the pressing plate of multiple leveling devices connects the connecting rod of punch in the positioning cylinder, realizes the quick fixation of punch, the operation is relatively more swift with the past two iron block frock grinding punch, including the positioning cylinder of the open top and setting the base at the bottom of positioning cylinder, the outside department of positioning cylinder circumferential distribution multiple leveling devices, the leveling device includes internal thread pipe, adjusting bolt, spring and pressing plate, the lower end of internal thread pipe is inclined and communicates the lateral wall of positioning cylinder, adjusting bolt is threadedly connected in the inside of internal thread pipe, spring and pressing plate are located in the inside of positioning cylinder, one end of spring rotatably connects the lower end of adjusting bolt, and the other end fixedly connects pressing plate.

Description

Technical Field

[0001] This utility model relates to the field of stamping die repair equipment, and in particular to the field of punches, specifically to a punch grinding tool. Background Technology

[0002] A punch is a metal part on a stamping die in machine tools. Also called a punch bar, punch needle, or punch, it is installed on a stamping die to perform continuous punching, cutting, and breaking operations, causing the workpiece to separate or plastically deform, thereby obtaining the desired finished or semi-finished product. The most common type of punch has a cylindrical head and a connecting rod at the bottom.

[0003] After the punch has been running for a period of time, the top surface of the punch needs to be ground flat to ensure the accuracy of the processing. Then, the punch grinding operation usually relies on two iron block fixtures for support. Although this traditional method can complete the basic grinding task, there are many inconveniences in the operation process, such as inaccurate positioning, insufficient punch fixing, and subsequent low operation efficiency due to the instability of the punch. Utility Model Content

[0004] This utility model provides a punch grinding fixture, which solves the problems of unstable punch fixing and low operation efficiency in the prior art. The connecting rod of the punch is fixed in the positioning cylinder by the pressure plate of multiple leveling devices, realizing the rapid fixing of the punch. The operation is faster than the previous two iron block fixtures for grinding the punch.

[0005] This utility model is achieved through the following technical solution:

[0006] A punch grinding fixture includes a positioning cylinder with an open top and a base disposed at the bottom of the positioning cylinder. Multiple leveling devices are circumferentially distributed on the outer side of the positioning cylinder.

[0007] The leveling device includes an internally threaded tube, an adjusting bolt, a spring, and a pressure plate. The lower end of the internally threaded tube is inclined to communicate with the side wall of the positioning cylinder. The adjusting bolt is threaded inside the internally threaded tube. The spring and the pressure plate are located inside the positioning cylinder. One end of the spring is rotatably connected to the lower end of the adjusting bolt, and the other end is fixedly connected to the pressure plate.

[0008] When the connecting rod of the punch is inserted into the positioning cylinder, the pressure plates of each leveling device work together to press the side wall of the connecting rod of the punch to fix the punch by tightening the adjusting bolt.

[0009] Furthermore, the surface of the pressure plate that contacts the connecting rod of the punch is an arc-shaped surface.

[0010] Furthermore, it also includes a punch clamping device that presses the punch firmly against the positioning cylinder.

[0011] Furthermore, the punch clamping device includes two semi-circular arc-shaped clamps and two clamping bolts. The two ends of the two arc-shaped clamps are fixed to the outer circumference of the punch by bolt fasteners.

[0012] The outer side of the arc-shaped clamp is provided with an upper connecting plate, and the outer side of the positioning cylinder is provided with a lower connecting plate corresponding to the upper connecting plate. The upper connecting plate is provided with a light hole, and the lower connecting plate is provided with a threaded hole. The clamping bolt passes through the light hole of the upper connecting plate from top to bottom and is then threaded into the threaded hole of the lower connecting plate.

[0013] Furthermore, the number of leveling devices is 3-4.

[0014] Furthermore, the bottom of the positioning cylinder is detachably connected to the base via a bolt assembly.

[0015] The beneficial effects achieved by this utility model compared with the prior art are as follows:

[0016] 1. This utility model provides a punch grinding fixture. Multiple leveling devices are distributed circumferentially on the outer side of the positioning cylinder. The leveling device includes an internal threaded tube, an adjusting bolt, a spring, and a pressure plate. When the connecting rod of the punch is inserted into the positioning cylinder, the pressure plates of each leveling device press the side wall of the connecting rod of the punch obliquely downward by tightening the adjusting bolt to fix the punch.

[0017] This invention enables the punch to be quickly fixed, improves the stability of the punch in the grinding operation, avoids processing errors caused by the loosening of the punch, simplifies the operation process, and optimizes the grinding quality and work efficiency.

[0018] 2. The contact surface between the pressure plate and the connecting rod of the punch is an arc-shaped surface, which increases the contact surface with the connecting rod of the punch and ensures that the connecting rod is pressed tightly.

[0019] 3. The punch clamping device includes two semi-circular arc-shaped clamps and two clamping bolts. The two ends of the two arc-shaped clamps are fixed to the outer circumference of the punch by bolt fasteners. The clamping bolts pass through the open hole of the upper connecting plate from top to bottom and are threaded into the threaded hole of the lower connecting plate. When the clamping bolts are tightened, the arc-shaped clamps can further press the punch into the positioning cylinder, making it more secure.

[0020] 4. The bottom of the positioning cylinder is detachably connected to the base via a bolt assembly. Different types of positioning cylinders can be disassembled and replaced according to the length of the connecting rod of the punch, making it flexible and convenient to use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the punch grinding fixture described in this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the punch grinding fixture described in this utility model;

[0023] In the diagram: 1. Positioning cylinder, 2. Base, 3. Internal threaded pipe, 4. Adjusting bolt, 5. Spring, 6. Pressure plate, 7. Arc-shaped clamp, 8. Upper connecting plate, 9. Lower connecting plate, 10. Tightening bolt. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] In the description of the utility model, it should be understood that the terms "front", "rear", "up", "down", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0026] This embodiment discloses a punch grinding fixture, such as... Figures 1-2 As shown, the main components include a positioning cylinder 1, a base 2, three leveling devices, and a punch clamping device. The positioning cylinder 1 is a cylindrical structure with an open top. The bottom of the positioning cylinder 1 is detachably connected to the base 2 via a bolt assembly. This design allows for the replacement of positioning cylinders 1 of different heights depending on the length of the punch's connecting rod.

[0027] Three leveling devices are circumferentially distributed on the outer wall of the positioning cylinder 1 for easy adjustment. Each leveling device includes an internally threaded tube 3, an adjusting bolt 4, a spring 5, and a pressure plate 6. The internally threaded tube 3 is welded to the side wall of the positioning cylinder 1, with its lower end inclined to connect to the side wall of the positioning cylinder 1 at an angle of 45°. The internally threaded tube 3 has internal threads, and the adjusting bolt 4 is threaded into the inside of the internally threaded tube 3. The spring 5 and pressure plate 6 are located inside the positioning cylinder 1. A ring is screwed onto the lower end of the adjusting bolt 4, and the ring is fixedly connected to one end of the spring 5, thus allowing one end of the spring 5 to rotate and connect to the lower end of the adjusting bolt 4, while the other end is fixedly connected to the pressure plate 6. The surface of the pressure plate 6 that contacts the connecting rod of the punch is an arc-shaped surface. When the connecting rod of the punch is inserted into the positioning cylinder 1, tightening the adjusting bolt 4 causes the pressure plates 6 of each leveling device to collectively press against the side wall of the connecting rod of the punch, thus fixing the punch in place.

[0028] The punch clamping device is used to press the punch tightly onto the positioning cylinder 1. The punch clamping device includes two semi-circular arc-shaped clamps 7 and two clamping bolts 10. The two ends of the two arc-shaped clamps 7 are fixed to the outer circumference of the punch by bolt fasteners. A transversely distributed upper connecting plate 8 is welded to the outside of each arc-shaped clamp 7. A lower connecting plate 9 corresponding to the upper connecting plate 8 is welded to the outside of the positioning cylinder 1. The upper connecting plate 8 has a smooth hole, and the lower connecting plate 9 has a threaded hole. The clamping bolt 10 passes through the smooth hole of the upper connecting plate 8 from top to bottom and is threaded into the threaded hole of the lower connecting plate 9. The outer diameter of the clamping bolt 10 is slightly smaller than the inner diameter of the smooth hole, so that the clamping bolt 10 can have a certain lateral movement allowance within the smooth hole of the upper connecting plate.

[0029] The specific working process of the punch grinding fixture described in this embodiment is as follows:

[0030] When using the punch grinding fixture, first place the connecting rod of the punch to be repaired into the positioning cylinder 1, then place the punch into the two arc-shaped clamps 7 of the punch clamping device. Next, tighten the three leveling devices on the side of the fixture in sequence. The built-in springs control the pressure plate to press the connecting rod of the punch, ensuring the punch is flat and stable. Then, tighten the bolt assembly connecting the two arc-shaped clamps 7 to form a circular clamp around the punch. Tighten the clamping bolts 10 to press the punch firmly into the positioning cylinder 1, ensuring the punch fits snugly against the punch grinding fixture. This design improves the stability of the punch during grinding operations, avoids processing errors caused by punch loosening, and optimizes grinding quality and work efficiency.

Claims

1. A punch grinding fixture, characterized in that, It includes a positioning cylinder (1) with an open top and a base (2) located at the bottom of the positioning cylinder (1). Multiple leveling devices are distributed circumferentially on the outer side of the positioning cylinder (1). The leveling device includes an internally threaded pipe (3), an adjusting bolt (4), a spring (5), and a pressure plate (6). The lower end of the internally threaded pipe (3) is inclined to communicate with the side wall of the positioning cylinder (1). The adjusting bolt (4) is threadedly connected to the inside of the internally threaded pipe (3). The spring (5) and the pressure plate (6) are located inside the positioning cylinder (1). One end of the spring (5) is rotatably connected to the lower end of the adjusting bolt (4), and the other end is fixedly connected to the pressure plate (6). When the connecting rod of the punch is inserted into the positioning cylinder (1), the pressure plates (6) of each leveling device press together to fix the punch by tightening the adjusting bolt (4).

2. The punch grinding fixture according to claim 1, characterized in that, The surface of the pressure plate (6) that contacts the connecting rod of the punch is an arc-shaped surface.

3. The punch grinding fixture according to claim 1, characterized in that, It also includes a punch clamping device that presses the punch firmly against the positioning cylinder (1).

4. The punch grinding fixture according to claim 3, characterized in that, The punch clamping device includes two semi-circular arc-shaped clamps (7) and two clamping bolts (10). The two ends of the two arc-shaped clamps (7) are fixed to the outer circumference of the punch by bolt fasteners. The outer side of the arc-shaped clamp (7) is provided with an upper connecting plate (8), and the outer side of the positioning cylinder (1) is provided with a lower connecting plate (9) corresponding to the upper connecting plate (8). The upper connecting plate (8) is provided with a light hole, and the lower connecting plate (9) is provided with a threaded hole. The clamping bolt (10) passes through the light hole of the upper connecting plate (8) from top to bottom and is then threaded into the threaded hole of the lower connecting plate (9).

5. The punch grinding fixture according to any one of claims 1-4, characterized in that, The number of leveling devices is 3-4.

6. The punch grinding fixture according to any one of claims 1-4, characterized in that, The bottom of the positioning cylinder (1) is detachably connected to the base (2) by a bolt assembly.

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