Pneumatic clamp for cross shafts

Abstract

This utility model provides a pneumatic clamp for a cross shaft, belonging to the field of pneumatic clamping technology. It solves the problem that existing pneumatic clamps are large in size and difficult to perform multi-station machining. This utility model includes a mounting base, pneumatic clamping units, and an air connection block. The mounting base is rectangular and has several mounting holes. The pneumatic clamping units include a cylinder piston body, a drive shaft, a clamping head, a positioning flange, and a drive cylinder. The positioning flange has an upper positioning shaft and a lower positioning shaft at its upper and lower ends, respectively. The lower positioning shaft extends into the mounting hole and connects to the mounting base. The cylinder piston body is connected to the upper positioning shaft. A first air pipe connector and a second air pipe connector are respectively provided on both sides of the outer end of the cylinder piston body. This utility model has the advantages of small size, small footprint, and multi-station machining capabilities.

Description

Technical Field

[0001] This utility model belongs to the field of pneumatic clamping technology, and relates to a pneumatic clamping device for a cross shaft. Background Technology

[0002] A cross-shaft pneumatic clamp is a tooling fixture specifically designed for cross-shaft parts. It uses a pneumatic system driven by compressed air to achieve rapid positioning and clamping of workpieces, and is mainly used in machining, welding, assembly and other processes.

[0003] Chinese patent publication number CN218018082U discloses a pneumatic clamp, including a base plate, a first cylinder, a second cylinder, a fixing frame, a first fixing plate, and a second fixing plate. The fixing frame is installed in the middle of the base plate. The first cylinder and the second cylinder are respectively installed on the upper sides of the base plate. The first fixing plate is connected to the output shaft of the first cylinder, and the second fixing plate is connected to the output shaft of the second cylinder. A first limiting member is provided between the first cylinder and the first fixing plate, and a second limiting member is provided between the second cylinder and the second fixing plate.

[0004] The patent provides a pneumatic clamp with a multi-cylinder, multi-fixed-plate structure, which makes the pneumatic clamp with this structure large in volume and difficult to realize multi-station processing. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing a pneumatic clamp for a cross shaft.

[0006] The objective of this utility model can be achieved through the following technical solution: A pneumatic clamp for a cross shaft includes a mounting base, a pneumatic clamping unit, and a pneumatic connection block. The mounting base is rectangular and has several mounting holes. The pneumatic clamping unit includes a cylinder piston body, a transmission shaft, a clamping head, a positioning flange, and a drive cylinder. The positioning flange has an upper positioning shaft and a lower positioning shaft at its upper and lower ends, respectively. The lower positioning shaft extends into the mounting hole and is connected to the mounting base. The cylinder piston body is connected to the upper positioning shaft. A first air pipe connector and a second air pipe connector are respectively provided on both sides of the outer end of the cylinder piston body. The transmission shaft passes through the cylinder piston body and the positioning flange in sequence and is connected to the drive cylinder. The upper end of the transmission shaft extends out of the cylinder piston body and the clamping head is connected to the upper end of the transmission shaft. A connecting groove is provided on the side end face of the positioning flange. The lower end of the pneumatic connection block is fitted and fixed to the connecting groove. A limit groove is provided in the pneumatic connection block, and the second air pipe connector is installed in the limit groove.

[0007] In the aforementioned pneumatic clamp for a cross shaft, the pneumatic clamping units are axially distributed and mounted on the mounting base.

[0008] In the aforementioned pneumatic clamp for a cross shaft, the positioning flange has a plurality of first connecting holes, and the upper end of the mounting base has a plurality of second connecting holes, wherein the first connecting holes and the second connecting holes are coaxially corresponding.

[0009] In the aforementioned pneumatic clamp for a cross shaft, a third connecting hole is provided at the lower end of the mounting base, and a fourth connecting hole is provided in the drive cylinder. The third connecting hole and the fourth connecting hole are coaxially aligned, and the drive cylinder is fixedly connected to the lower end of the mounting base.

[0010] In the aforementioned pneumatic clamp for a cross shaft, an air passage hole is provided in the air passage connecting block, and the air passage hole communicates with the inner end face of the limiting groove.

[0011] In the aforementioned pneumatic clamp for a cross shaft, a fifth connecting hole is provided near the side end of the mounting base.

[0012] Compared with the prior art, the pneumatic clamp for the cross shaft provided by this utility model has the following beneficial effects: 1. The positioning flange simultaneously undertakes the functions of positioning, connection and air path transition, integrating positioning, transmission and air path control functions into the same axial path, eliminating ineffective gaps between components and further compressing the structural volume; 2. The lower end of the air path connecting block is tightly fitted with the connecting groove of the positioning flange, the second air pipe connector is embedded in the limiting groove, and the air path through hole is directly connected to the limiting groove, so that the air pipe connection part is completely integrated into the side of the positioning flange, avoiding pipeline exposure or additional supports, simplifying the layout and reducing space occupation; 3. Multiple pneumatic clamping units are arranged in an orderly manner along the axial direction, and each component is coaxially connected through the positioning shaft and connecting hole to form a compact structure with axial series connection, avoiding lateral redundant expansion and greatly reducing the overall space occupation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the exploded structure of the pneumatic clamping unit;

[0015] Figure 3 This is a schematic diagram of the mounting base structure;

[0016] Figure 4 This is a schematic diagram of the mounting base from another angle.

[0017] In the diagram: 1. Mounting base; 11. Mounting hole; 12. Second connecting hole; 13. Third connecting hole; 14. Fifth connecting hole; 2. Pneumatic clamping unit; 21. Cylinder piston body; 211. First air pipe connector; 212. Second air pipe connector; 22. Transmission spindle; 23. Clamping head; 24. Positioning flange; 241. Upper positioning shaft; 242. Lower positioning shaft; 243. Connecting groove; 244. First connecting hole; 25. Drive cylinder; 251. Fourth connecting hole; 3. Air passage connecting block; 31. Limiting groove; 32. Air passage through hole. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figures 1 to 4 As shown, this embodiment includes a mounting base 1, several pneumatic clamping units 2, and a pneumatic connection block 3. The mounting base 1 serves as the basic load-bearing structure of the entire fixture and is rectangular in shape. Several mounting holes 11 and a second connecting hole 12 are provided on the upper surface of the mounting base 1. The mounting holes 11 are used for the initial positioning and installation of the pneumatic clamping units 2. A third connecting hole 13 is provided on the lower surface of the mounting base 1, and a fifth connecting hole 14 is provided near the side end. The fifth connecting hole 14 is used to fix the entire embodiment to external machinery, thereby improving the assembly flexibility and stability of the fixture.

[0020] like Figures 1 to 4As shown, several pneumatic clamping units 2 are axially distributed and mounted on the mounting base 1. This distribution adapts to the shape of the cross shaft, enabling multi-directional synchronous clamping operations. Each pneumatic clamping unit 2 includes a cylinder piston body 21, a transmission spindle 22, a clamping head 23, a positioning flange 24, and a drive cylinder 25. The upper and lower ends of the positioning flange 24 are respectively formed with an upper positioning shaft 241 and a lower positioning shaft 242. The lower positioning shaft 242 extends into the mounting hole 11 of the mounting base 1, providing initial axial positioning for the positioning flange 24. Simultaneously, several first connecting holes 244 are provided in the positioning flange 24. The second connecting hole 12 at the upper end of the mounting base 1 is coaxially corresponding to the first connecting holes 244. By passing fasteners through these connecting holes, the positioning flange 24 can be securely connected to the mounting base 1, ensuring the pneumatic clamping unit 2... The overall installation accuracy and structural strength are ensured by connecting the cylinder piston body 21 to the upper positioning shaft 241 of the positioning flange 24. The upper positioning shaft 241 enables assembly with the positioning flange 24. The cylinder piston body 21 has a first air pipe connector 211 and a second air pipe connector 212 on both sides of its outer end for connecting to the pneumatic circuit. By controlling the direction of compressed air inlet and outlet, the piston inside the cylinder piston body 21 is driven to reciprocate, providing a power source for the clamping action. The transmission main shaft 22 passes through the cylinder piston body 21 and the positioning flange 24 in sequence and is connected to the drive cylinder 25. The upper end of the transmission main shaft 22 extends out of the cylinder piston body 21, and the clamping head 23 is connected to the upper end of the transmission main shaft 22. When the drive cylinder 25 works, it can drive the transmission main shaft 22 to move linearly. The transmission main shaft 22 then drives the clamping head 23 to move synchronously, realizing the clamping or releasing operation of the cross shaft.

[0021] like Figures 1 to 4 As shown, the lower end of the mounting base 1 has a third connecting hole 13, and the drive cylinder 25 has a fourth connecting hole 251. The third connecting hole 13 and the fourth connecting hole 251 are coaxially aligned. The drive cylinder 25 is fixedly connected to the lower end of the mounting base 1 by fasteners to ensure stable installation of the drive cylinder 25, provide reliable power output to the transmission spindle 22, and ensure smooth execution of the clamping action.

[0022] To elaborate further, such as Figures 1 to 4As shown, a connecting groove 243 is provided on the side end face of the positioning flange 24. The lower end of the air passage connecting block 3 is fitted and fixed to the connecting groove 243 to realize the installation and positioning of the air passage connecting block 3 on the positioning flange 24. A limiting groove 31 is provided in the air passage connecting block 3. The second air pipe connector 212 is installed in the limiting groove 31. The limiting groove 31 plays a role in accommodating and limiting the second air pipe connector 212 to prevent the air pipe connector from loosening due to external force collision. At the same time, an air passage through hole 32 is provided in the air passage connecting block 3. The air passage through hole 32 communicates with the inner end face of the limiting groove 31. Compressed air can enter the limiting groove 31 through the air passage through hole 32, and then enter the cylinder piston body 21 through the second air pipe connector 212, providing a stable air source for the piston movement of the cylinder piston body 21 and ensuring the normal operation of the pneumatic clamping unit 2.

[0023] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0024] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A pneumatic clamp for a cross axle, comprising a mounting base (1), a pneumatic clamping unit (2) and a gas circuit connecting block (3), characterized in that: The mounting base (1) is rectangular and has several mounting holes (11). The pneumatic clamping unit (2) comprises a number of components, including a cylinder piston body (21), a transmission shaft (22), a clamping head (23), a positioning flange (24), and a drive cylinder (25). The positioning flange (24) has an upper positioning shaft (241) and a lower positioning shaft (242) formed at its upper and lower ends, respectively. The lower positioning shaft (242) extends into the mounting holes (11) and connects to the mounting base (1). The cylinder piston body (21) is connected to the upper positioning shaft (241). The outer end of the cylinder piston body (21)... The first air pipe connector (211) and the second air pipe connector (212) are respectively provided on both sides. The transmission main shaft (22) passes through the cylinder piston body (21) and the positioning flange (24) in sequence and is connected to the drive cylinder (25). The upper end of the transmission main shaft (22) extends out of the cylinder piston body (21) and the clamping head (23) is connected to the upper end of the transmission main shaft (22). The side end face of the positioning flange (24) is provided with a connecting groove (243). The lower end of the air circuit connecting block (3) is fitted and fixed to the connecting groove (243). A limit groove (31) is provided in the air circuit connecting block (3). The second air pipe connector (212) is installed in the limit groove (31).

2. The pneumatic gripper for a cross axle according to claim 1, characterized in that: The pneumatic clamping unit (2) is axially distributed and installed on the mounting base (1).

3. The pneumatic gripper for a cross axle according to claim 1, characterized in that: The positioning flange (24) has a plurality of first connecting holes (244), and the mounting base (1) has a plurality of second connecting holes (12) at its upper end. The first connecting holes (244) and the second connecting holes (12) are coaxially corresponding.

4. The pneumatic gripper for a cross axle according to claim 1, characterized in that: The mounting base (1) has a third connecting hole (13) at its lower end, and the driving cylinder (25) has a fourth connecting hole (251). The third connecting hole (13) and the fourth connecting hole (251) are coaxially aligned. The driving cylinder (25) is fixedly connected to the lower end of the mounting base (1).

5. The pneumatic gripper for a cross axle according to claim 1, characterized in that: The air passage connection block (3) has an air passage through hole (32) which communicates with the inner end face of the limiting groove (31).

6. The pneumatic gripper for a cross axle according to claim 1, characterized in that: The mounting base (1) has a fifth connecting hole (14) near its side end.

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