One-face two-pin positioning machining clamp

Abstract

The utility model discloses a one-face two-pin positioning machining clamp, which relates to the field of clamping equipment and comprises a power mechanism, two clamping mechanisms which are arranged in a central symmetry mode are arranged on two sides of the power mechanism, and a connecting mechanism is arranged at the left end of the power mechanism. Wherein the power mechanism comprises a fixing block and two symmetrically-arranged connecting shafts, a hydraulic cylinder is fixedly connected to the interior of the fixing block, the two connecting shafts are fixedly connected to the upper side and the lower side of the fixing block respectively, and the output end of the hydraulic cylinder is connected with the right side of the connecting mechanism; the connecting mechanism comprises a positioning block fixedly connected with the output end of the hydraulic cylinder, and two symmetrically-arranged plug pins are rotationally connected into the positioning block. According to the clamping device, the worm and the worm gear are driven by the servo motor to rotate, and then the clamping plate is driven by the transmission rod to rotate, so that the angle of the clamping plate can be conveniently adjusted according to the shape of a workpiece.

Description

Technical Field

[0001] This utility model relates to the field of clamping equipment, specifically to a one-sided two-pin positioning and processing clamp. Background Technology

[0002] One-face two-pin positioning is a commonly used machining positioning method. It achieves precise workpiece positioning by using two pins that engage with two positioning holes on the workpiece. This positioning method features symmetry, accuracy, adaptability, stability, and repeatability, and can accommodate workpieces of different shapes and sizes. In practical applications, one-face two-pin positioning is typically used for workpiece positioning during machining and assembly processes, especially in applications requiring high precision and repeatability. When selecting and using this positioning method, factors such as the workpiece's material, shape, size, and machining requirements must be considered to ensure the stability and accuracy of the positioning. Simultaneously, attention must be paid to the maintenance and upkeep of the fixture to extend its service life.

[0003] In most cases, existing one-sided two-pin positioning fixtures require additional angle adjustment devices to ensure that the equipment can adapt to workpieces of various angles and meet their specific needs. Utility Model Content

[0004] To solve the above-mentioned technical problems, a one-sided two-pin positioning machining fixture is provided. This technical solution solves the problem mentioned in the background art that an additional angle adjustment device is required, which can ensure that the equipment can adapt to workpieces of various different angles and meet their specific needs.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A two-pin positioning and machining fixture includes a power mechanism, two centrally symmetrical clamping mechanisms on both sides of the power mechanism, and a connecting mechanism at the left end of the power mechanism.

[0007] The power mechanism includes a fixed block and two symmetrically arranged connecting shafts. A hydraulic cylinder is fixedly connected inside the fixed block. The two connecting shafts are fixedly connected to the upper and lower sides of the fixed block, respectively. The output end of the hydraulic cylinder is connected to the right side of the connecting mechanism.

[0008] The connecting mechanism includes a positioning block that is fixedly connected to the output end of the hydraulic cylinder, and the positioning block has two symmetrically arranged pins rotatably connected inside.

[0009] The clamping mechanism includes a clamping arm rotatably connected to the outer surface of the connecting shaft. A servo motor is fixedly installed on the upper left side of the clamping arm. The output end of the servo motor passes through the upper end of the clamping arm and is fixedly connected to a worm gear. The worm gear is rotatably connected to the inside of the clamping arm.

[0010] Preferably, the clamping arm is rotatably connected to a transmission rod, and one end of the transmission rod is fixedly connected to a worm gear, which meshes with the worm.

[0011] Preferably, a clamping plate is fixedly connected to the other end of the transmission rod, and two symmetrically distributed positioning pins are fixedly connected to the inner side of the clamping plate.

[0012] Preferably, a connecting block is fixedly connected to the inner side of the clamping arm, and a connecting rod is fixedly connected inside the connecting block.

[0013] Preferably, both ends of the connecting rod are rotatably connected to connecting plates, and the other ends of the two connecting plates are rotatably connected to both ends of the pin, respectively.

[0014] Preferably, a mounting plate is fixedly connected to the right side of the fixing block, and the outer surface of the hydraulic cylinder is fixedly installed inside the mounting plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In this invention, the connecting mechanism is moved by the power mechanism, and the connecting rod connected to the inside of the clamping arm moves towards the center by the positioning block and the connecting plate, thereby pushing one end of the clamping arm to move towards the center, so as to clamp the workpiece. The servo motor drives the worm and worm wheel to rotate, and then drives the clamping plate to rotate by the transmission rod, so as to facilitate the adjustment of the angle of the clamping plate according to the shape of the workpiece. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the connecting mechanism in this utility model;

[0019] Figure 3 This is a cross-sectional view of the clamping mechanism in this utility model.

[0020] The numbers on the map are:

[0021] 1. Power mechanism; 101. Fixing block; 102. Hydraulic cylinder; 103. Connecting shaft;

[0022] 2. Connecting mechanism; 201. Positioning block; 202. Connecting plate; 203. Connecting block; 204. Pin; 205. Connecting rod;

[0023] 3. Clamping mechanism; 301. Clamping arm; 302. Servo motor; 303. Worm gear; 304. Transmission rod; 305. Worm wheel; 306. Clamping plate; 307. Positioning pin;

[0024] 4. Mounting plate. Detailed Implementation

[0025] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0026] Reference Figure 1-3 As shown, a one-sided two-pin positioning machining fixture includes a power mechanism 1, with two centrally symmetrically arranged clamping mechanisms 3 on both sides of the power mechanism 1, and a connecting mechanism 2 at the left end of the power mechanism 1. The power mechanism 1 includes a fixed block 101 and two symmetrically arranged connecting shafts 103. A hydraulic cylinder 102 is fixedly connected inside the fixed block 101, and the two connecting shafts 103 are respectively fixedly connected to the upper and lower sides of the fixed block 101. The output end of the hydraulic cylinder 102 is connected to the right side of the connecting mechanism 2. The connecting mechanism 2 includes a positioning block 201 fixedly connected to the output end of the hydraulic cylinder 102, and two symmetrically arranged clamping mechanisms 3 are rotatably connected inside the positioning block 201. Pin 204; Clamping mechanism 3 includes a clamping arm 301 rotatably connected to the outer surface of connecting shaft 103. A servo motor 302 is fixedly installed on the upper left side of the clamping arm 301. The output end of the servo motor 302 passes through the upper end of the clamping arm 301 and is fixedly connected to a worm gear 303. The worm gear 303 is rotatably connected to the inside of the clamping arm 301. A transmission rod 304 is rotatably connected to the inside of the clamping arm 301. A worm wheel 305 is fixedly connected to one end of the transmission rod 304. The worm wheel 305 and the worm gear 303 mesh with each other. A clamping plate 306 is fixedly connected to the other end of the transmission rod 304. Two symmetrically distributed positioning pins 307 are fixedly connected to the inner side of the clamping plate 306.

[0027] Specifically, the clamping arm 301 supports and fixes the servo motor 302 and the clamping plate 306; simultaneously, the servo motor 302 drives the worm gear 303 inside the clamping arm 301 to rotate, which in turn drives the worm wheel 305 on the transmission rod 304 to rotate, thus facilitating the rotation of the clamping plate 306 via the transmission rod 304. This allows the rotating clamping plate 306 to clamp different workpieces. Two positioning pins 307 are inserted into the pin holes on the workpiece to fix it, thereby positioning the workpiece and limiting its position. The clamping mechanism ensures that the workpiece can only move along the clamping plate 306 with the positioning pin 307, thereby enabling precise handling and movement of the workpiece. This allows for easy adjustment of the clamping angle according to different workpieces. At the same time, the rotation direction of the clamping arm 301 is restricted by the connecting shaft 103, ensuring that the clamping arm 301 can only rotate in the horizontal direction and is always aligned. Meanwhile, the end of the clamping arm 301 closest to the fixing block 101 is restricted by the fixing block 101, so that the end of the clamping arm 301 away from the fixing block 101 can move. This allows the workpiece to be clamped by the moving end of the clamping arm 301.

[0028] Reference Figure 1-3 As shown, a connecting block 203 is fixedly connected to the inner side of the clamping arm 301, and a connecting rod 205 is fixedly connected inside the connecting block 203; both ends of the connecting rod 205 are rotatably connected to connecting plates 202, and the other ends of the two connecting plates 202 are rotatably connected to the two ends of the pin 204 respectively; a mounting plate 4 is fixedly connected to the right side of the fixing block 101, and the outer surface of the hydraulic cylinder 102 is fixedly installed inside the mounting plate 4;

[0029] Specifically, the connecting block 203 and the connecting plate 202 are connected together by the connecting rod 205. At the same time, the movement of the connecting plate 202 can drive the connecting block 203 to move, thereby driving the middle part of the clamping arm 301 to move towards the center through the connecting block 203, so that the clamping arm 301 can be clamped. Meanwhile, the mounting plate 4 connected to one side of the fixing block 101 makes it easy to install the equipment in the required position.

[0030] Working principle: In use, the device is fixed to the mobile device by the screws on the mounting plate 4. The servo motor 302 drives the worm gear 303 and the transmission rod 304 to rotate, which in turn drives the worm wheel 305 and the transmission rod 304 to rotate, which in turn drives the clamping plate 306 on the inner side of the clamping arm 301 to rotate. This allows the direction of the clamping plate 306 to be changed according to different workpieces. At the same time, the two positioning pins 307 on the clamping plate 306 facilitate the positioning of the workpiece. The worm gear 303 and the worm wheel 305 can fix and restrict the position of the clamping plate 306.

[0031] The two clamping arms 301 are connected together by the connecting mechanism 2 installed on the inner side of the clamping arm 301, so that the power mechanism 1 can pull them. The connecting plate 202 is connected to the positioning block 201 by the connecting block 203 and the connecting rod 205 on the inner side of the clamping arm 301, so that the positioning block 201 can pull the clamping arm 301 towards the middle.

[0032] Subsequently, the hydraulic cylinder 102 installed inside the fixed block 101 drives the positioning block 201 to move, thereby driving the connecting plate 202 to move through the movement of the positioning block 201, which in turn drives one end of the clamping arm 301 to move towards the center, thus facilitating the clamping of the workpiece.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A two-pin positioning and machining fixture, characterized in that, It includes a power mechanism (1), two centrally symmetrical clamping mechanisms (3) are provided on both sides of the power mechanism (1), and a connecting mechanism (2) is provided at the left end of the power mechanism (1); The power mechanism (1) includes a fixed block (101) and two symmetrically arranged connecting shafts (103). A hydraulic cylinder (102) is fixedly connected inside the fixed block (101). The two connecting shafts (103) are respectively fixedly connected to the upper and lower sides of the fixed block (101). The output end of the hydraulic cylinder (102) is connected to the right side of the connecting mechanism (2). The connecting mechanism (2) includes a positioning block (201) fixedly connected to the output end of the hydraulic cylinder (102), and the positioning block (201) has two symmetrically arranged pins (204) rotatably connected inside; The clamping mechanism (3) includes a clamping arm (301) rotatably connected to the outer surface of the connecting shaft (103). A servo motor (302) is fixedly installed on the upper left side of the clamping arm (301). The output end of the servo motor (302) passes through the upper end of the clamping arm (301) and is fixedly connected to a worm gear (303). The worm gear (303) is rotatably connected to the inside of the clamping arm (301).

2. The one-sided two-pin positioning machining fixture according to claim 1, characterized in that: The clamping arm (301) is rotatably connected to a transmission rod (304), and one end of the transmission rod (304) is fixedly connected to a worm gear (305), which meshes with the worm (303).

3. The one-sided two-pin positioning machining fixture according to claim 2, characterized in that: The other end of the transmission rod (304) is fixedly connected to a clamping plate (306), and the inner side of the clamping plate (306) is fixedly connected to two symmetrically distributed positioning pins (307).

4. The one-sided two-pin positioning machining fixture according to claim 3, characterized in that: A connecting block (203) is fixedly connected to the inner side of the clamping arm (301), and a connecting rod (205) is fixedly connected inside the connecting block (203).

5. A two-pin positioning machining fixture with one side as described in claim 4, characterized in that: Both ends of the connecting rod (205) are rotatably connected to connecting plates (202), and the other ends of the two connecting plates (202) are rotatably connected to the two ends of the pin (204).

6. A two-pin positioning machining fixture according to claim 1, characterized in that: The mounting plate (4) is fixedly connected to the right side of the fixing block (101), and the outer surface of the hydraulic cylinder (102) is fixedly installed inside the mounting plate (4).

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