Clamp for pin shaft production

Abstract

The utility model relates to the technical field of clamps, and discloses a clamp for pin shaft production, which comprises a main body, the top end of the main body is provided with a clamping frame, the bottom end of the main body is connected with a connecting frame, the clamping frame comprises an upper clamping plate, the middle part of the upper clamping plate is provided with a sliding chute, one end of the sliding chute is connected with a telescopic electric push rod, and the other end of the sliding chute is connected with a connecting rod. And one end of the telescopic electric push rod is connected with an inner clamping frame, a clamping groove is formed in the inner wall of the inner clamping frame, the inner wall of the clamping groove is connected with an arc-shaped groove, and auxiliary electric push rods are distributed on the two sides of the sliding groove. According to the utility model, when the external bottom clamping plate and the upper clamping plate are combined for clamping, the pin shaft in a clamping state can be ejected and adjusted through the inner clamping frame which is internally adjusted and controlled in a sliding manner, so that the flexibility is further improved, the arc-shaped grooves of the clamping grooves in the inner clamping frame are transversely arranged to improve the friction force, the pin shaft can be prevented from shaking and dislocating in the clamping state, and the working efficiency is improved. And frequent manual treatment is not needed in the clamping process, and the whole clamping operation process is convenient and rapid.

Description

Technical Field

[0001] This utility model relates to the field of pin clamping technology, specifically a clamping tool for pin production. Background Technology

[0002] Mining machine pins are slender cylindrical components used as hinge shafts in mining machine chains. Pins are a type of standardized fastener used in mining machines to connect chains or other components, transmit force, and support weight. Pins are typically made of high-strength steel or alloy steel to ensure the strength and stability of the connection. During operation, pins need to withstand significant tensile, compressive, and bending forces; therefore, their materials and manufacturing processes require strict selection and control. Furthermore, mining machine pins may undergo special heat treatment to improve their physical and mechanical properties, making them more fatigue-resistant and durable. Pins are also important wear parts during the maintenance and repair of mining machines, requiring regular inspection and replacement. In the pin manufacturing process, after heat treatment, quenching, and tempering, pins require surface grinding while being held and rotated in a fixture. The pin fixture is a specialized tool used to hold and fix the pin for processing or assembly.

[0003] Existing technology, such as the patent with publication number CN209050427U, discloses a pin clamp, including a base plate. The base plate has several strip grooves along its length for engaging pins. Abutment post is provided behind the strip groove in the milling direction. The side wall of the pin abuts against the abutment post. A backrest is provided at the end of the base plate. The end of the pin abuts against the backrest. A clamping part is provided between two strip grooves. The clamping part includes a threaded hole perpendicular to the base plate surface, a screw threaded into the threaded hole, and a clamping plate inserted into the screw. The clamping plate abuts against the upper part of the outer wall of the pin.

[0004] While the aforementioned existing technologies have significant beneficial effects, they still have shortcomings:

[0005] In the aforementioned prior art, multiple sets of pins can be clamped and processed simultaneously by clamping the clamping plate and the base plate. However, the pin clamping process requires manual threading to maintain the clamping and fixing. At the same time, the pins cannot be adjusted in position after being clamped and fixed by the fixture, making the fixture installation and removal process cumbersome. Furthermore, the clamping process has low fault tolerance and is inflexible, resulting in insufficient convenience in the production process. Therefore, a fixture for pin production is proposed. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a clamp for pin production. The bottom clamping plate and the upper clamping plate with corresponding slots, together with the auxiliary electric push rods on both sides, can keep the pin stable in the clamp without manual locking. At the same time, the pin can be slid out by the inner clamping frame during processing, realizing position adjustment in the clamping and processing state, improving flexibility and clamping convenience.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a clamp for pin production, comprising a main body, a clamping frame at the top of the main body, and a connecting frame at the bottom of the main body. The clamping frame includes an upper clamping plate, and a sliding groove is formed in the middle of the upper clamping plate. A telescopic electric push rod is connected to one end of the sliding groove, and an inner clamping frame is connected to one end of the telescopic electric push rod. A clamping groove is formed on the inner wall of the inner clamping frame, and an arc-shaped groove is connected to the inner wall of the clamping groove. Auxiliary electric push rods are distributed on both sides of the sliding groove, and locking pins are distributed on both sides of the auxiliary electric push rods.

[0008] Preferably, the upper clamping plate forms a lifting structure with the main body through auxiliary electric push rods on both sides, and the locking pins are fixedly connected to both sides of the upper clamping plate.

[0009] Preferably, the inner clamping frame forms a sliding telescopic structure with the sliding groove via a telescopic electric push rod, and the arc-shaped grooves are arranged equidistantly along the inner wall of the clamping groove in the inner clamping frame.

[0010] Preferably, the main body includes a bottom clamping plate, and a slot is provided in the middle of the top surface of the bottom clamping plate. The inner wall of the slot is provided with wire grooves, and a pin is attached to the inner wall of the slot.

[0011] Preferably, the grooves are arranged longitudinally at equal intervals along the arc-shaped inner wall of the slot, and the bottom clamping plate engages with one side of the pin shaft through the slot.

[0012] Preferably, the connecting frame includes a plate frame, the bottom end of which is connected to a main body, and a slot is provided in the middle of the plate frame, while mounting holes are provided on both sides of the plate frame.

[0013] Preferably, the plate frame is welded and fixed to the bottom surface of the main body, and the mounting holes are distributed and penetrate along both sides of the plate frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model can clamp the pin shaft in the clamping state by combining the external bottom clamping plate and the upper clamping plate, and can also adjust the pin shaft in the clamping state by the internal sliding adjustment inner clamping frame, which further improves the flexibility. The arc-shaped groove of the clamping groove in the inner clamping frame is arranged laterally to increase the friction force, which can prevent the pin shaft from shaking and dislodging in the clamping state. Moreover, the clamping process does not require frequent manual handling, and the overall clamping operation is convenient and quick.

[0016] 2. The slot portion of the bottom clamping plate of this fixture has protruding grooves evenly arranged on the inner wall of its arc-shaped slot. This helps to keep the pin in the clamping state, prevent the pin from slipping, increase friction, and thus improve stability during clamping and processing.

[0017] 3. The fixture can be connected to devices such as robotic arms through the plate frame structure at the bottom of the base clamp. It can be connected and fixed through the slots opened in the plate frame, or it can be connected and fixed with the mounting holes, which makes the clamping process convenient and safe to operate.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the slot in the bottom clamping plate of this utility model;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the clamping frame of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the connecting frame of this utility model.

[0023] In the diagram: 1. Main body; 101. Bottom clamping plate; 102. Slot; 103. Wire groove; 104. Pin; 2. Clamping frame; 201. Upper clamping plate; 202. Slide groove; 203. Telescopic electric push rod; 204. Inner clamping frame; 205. Clamping groove; 206. Arc groove; 207. Auxiliary electric push rod; 208. Locking post; 3. Connecting frame; 301. Plate frame; 302. Slot; 303. Mounting hole. Detailed Implementation

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

[0025] Please see Figure 1-4This embodiment of a pin production fixture includes a main body 1, a clamping frame 2 is provided at the top of the main body 1, and a connecting frame 3 is connected to the bottom of the main body 1. The main body 1 includes a bottom clamping plate 101, and a slot 102 is provided in the middle of the top surface of the bottom clamping plate 101. The inner wall of the slot 102 is provided with wire grooves 103, and a pin 104 is attached to the inner wall of the slot 102.

[0026] like Figure 1-2 As shown, the clamp in this utility model is similar to existing clamps, such as the pin clamp disclosed in CN209050427U. The main improvement of this utility model is that the bottom clamping plate 101 and the upper clamping plate 201 with corresponding slots, together with the auxiliary electric push rods 207 on both sides, can keep the pin 104 stably clamped without manual locking. At the same time, it can be slid out by the inner clamping frame 204 during processing, realizing position adjustment in the clamping processing state, improving flexibility and clamping convenience; the telescopic electric push rod 203 in this utility model Both the auxiliary electric push rod 207 and the fixture are existing technologies. When using this fixture, one end of the pin 104 can be placed into the slot 102 of the bottom clamping plate 101, and then clamped by the clamping plate 201 to maintain the clamping state. The slot 102 of the bottom clamping plate 101 of this fixture has convex grooves 103 evenly arranged on the inner wall of its arc-shaped slot 102, which can keep the pin 104 in the clamping state, avoid the pin 104 from slipping, increase friction, and thus improve stability in the clamping and processing state.

[0027] like Figure 1-3As shown, the clamping frame 2 includes an upper clamping plate 201, and a sliding groove 202 is provided in the middle of the upper clamping plate 201. One end of the sliding groove 202 is connected to a telescopic electric push rod 203, and one end of the telescopic electric push rod 203 is connected to an inner clamping frame 204. A clamping groove 205 is provided on the inner wall of the inner clamping frame 204, and an arc-shaped groove 206 is connected to the inner wall of the clamping groove 205. Auxiliary electric push rods 207 are distributed on both sides of the sliding groove 202, and locking pins 208 are distributed on both sides of the auxiliary electric push rods 207. When the pin 104 is in the bottom clamping plate 101, the auxiliary electric push rods 207 on both sides operate, gradually bringing the connected upper clamping plate 201 and the bottom clamping plate 101 closer together, and as they retract, they clamp the pin 104. After the clamping state is completed, this fixture can be placed on a machine tool, etc. The equipment performs milling operations. During the process, the inner clamp 204 can be slid outward by operating the telescopic electric push rod 203, so that the inner clamp 204 slides out along the slide groove 202. The clamped pin 104 is also pushed out simultaneously, thus completing the adjustment process in the clamping state. While the fixture clamps the pin 104 in the clamping state through the combination of the outer bottom clamp 101 and the upper clamp 201, it can also adjust the pin 104 in the clamping state through the internal sliding control of the inner clamp 204, further improving flexibility. The arc-shaped groove 206 of the clamping groove 205 in the inner clamp 204 is arranged laterally to increase friction, which can prevent the pin 104 from shaking and dislodging in the clamping state. Moreover, the clamping process does not require frequent manual handling, and the overall clamping operation is convenient and quick.

[0028] like Figure 4 As shown, the connecting frame 3 includes a plate frame 301, the bottom of which is connected to the main body 1. A slot 302 is provided in the middle of the plate frame 301, and mounting holes 303 are provided on both sides of the plate frame 301. Before use, the clamp can be connected to devices such as robotic arms through the plate frame 301 structure at the bottom of the bottom clamping plate 101. It can be docked through the slot 302 provided in the plate frame 301, and can also be connected and fixed with the mounting holes 303, which facilitates the clamping process and ensures operational safety.

[0029] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A fixture for producing pins, comprising a main body (1), characterized in that, The top of the main body (1) is provided with a clamping frame (2), and the bottom of the main body (1) is connected with a connecting frame (3). The clamping frame (2) includes an upper clamping plate (201), and a sliding groove (202) is provided in the middle of the upper clamping plate (201). One end of the sliding groove (202) is connected to a telescopic electric push rod (203), and one end of the telescopic electric push rod (203) is connected to an inner clamping frame (204). The inner wall of the inner clamping frame (204) is provided with a clamping groove (205), and the inner wall of the clamping groove (205) is connected with an arc groove (206). Auxiliary electric push rods (207) are distributed on both sides of the sliding groove (202), and locking pins (208) are distributed on both sides of the auxiliary electric push rods (207).

2. The fixture for producing pins according to claim 1, characterized in that, The upper clamping plate (201) forms a lifting structure with the main body (1) through the auxiliary electric push rods (207) on both sides, and the locking pins (208) are fixedly connected to both sides of the upper clamping plate (201).

3. The fixture for producing pins according to claim 1, characterized in that, The inner clamp (204) forms a sliding telescopic structure with the sliding groove (202) through the telescopic electric push rod (203), and the arc-shaped groove (206) is arranged horizontally at equal intervals along the inner wall of the clamping groove (205) in the inner clamp (204).

4. A fixture for producing pins according to claim 1, characterized in that, The main body (1) includes a bottom clamping plate (101), and a slot (102) is provided in the middle of the top surface of the bottom clamping plate (101). The inner wall of the slot (102) is provided with wire grooves (103), and a pin (104) is attached to the inner wall of the slot (102).

5. A fixture for producing pins according to claim 4, characterized in that, The grooves (103) are arranged longitudinally at equal intervals along the arc-shaped inner wall of the slot (102), and the bottom clamp (101) is engaged with one side of the pin (104) through the slot (102).

6. A fixture for producing pins according to claim 1, characterized in that, The connecting frame (3) includes a plate frame (301), the bottom end of which is connected to the main body (1), and a slot (302) is provided in the middle of the plate frame (301), and mounting holes (303) are provided on both sides of the plate frame (301).

7. A fixture for producing pins according to claim 6, characterized in that, The plate frame (301) is welded and fixed to the bottom surface of the main body (1), and the mounting holes (303) are distributed and penetrate along both sides of the plate frame (301).

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