Clamp with built-in gas circuit

Abstract

The invention provides a clamp with a built-in gas circuit, which comprises a bottom plate, a workpiece placing table is arranged on the bottom plate, at least one pressing claw is arranged on the outer side of the workpiece placing table, and each pressing claw is correspondingly connected with a pneumatic assembly and is used for clamping a workpiece; the pneumatic assembly is arranged in the bottom plate in a penetrating mode, an air inlet and an air outlet of the pneumatic assembly are connected with one end of an air inlet path and one end of an air outlet path respectively, the other end of the air inlet path and the other end of the air outlet path are connected with an air inlet valve and an air outlet valve respectively, and the air inlet path and the air outlet path are both arranged in the bottom plate. The air inlet valve and the air outlet valve are arranged on the side face of the bottom plate and used for being connected with an external air source. The situation that workpieces are not placed in place due to the fact that scraps are accumulated at the position of the external air pipe is avoided, the air tightness is good, and the defects that air pressure is unstable, and the clamping effect is poor due to air leakage are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of fixtures, and in particular to a fixture with an internal air circuit.

Background Art

[0002] Milling is a commonly used machining method for workpieces. When milling a workpiece, it is generally necessary to first clamp and fix the workpiece with a fixture, and then use a milling device to machine the workpiece. Currently, the commonly used fixture clamps the workpiece by means of a pneumatic component. After the pneumatic component is connected to a hose, the hose is directly placed on the surface of the fixture. During the milling process, the hose is prone to interference with the milling device, and the chips generated during the milling process are likely to accumulate at the hose, making it difficult to clean. The accumulated chips may also remain at the workpiece placement location, resulting in problems such as improper workpiece placement. Moreover, the hose is prone to air leakage, affecting the clamping effect of the fixture and causing poor machining.

[0003] In view of this, the present invention provides a fixture with an internal air circuit to solve the above problems.

Summary of the Invention

[0004] To solve the problems that the hose of the existing pneumatic fixture is placed on the surface of the fixture, the chips generated by milling are likely to accumulate at the hose and are difficult to clean, which may even cause problems such as improper workpiece placement, and the hose is prone to air leakage, affecting the clamping effect of the fixture, the present invention provides a fixture with an internal air circuit to solve the above problems.

[0005] The solution of the present invention to solve its technical problems is: a fixture with an internal air circuit, characterized by comprising:

[0006] A bottom plate, on which a workpiece placement table is provided. At least one clamping jaw is provided outside the workpiece placement table, and each clamping jaw is correspondingly connected to a pneumatic component for clamping the workpiece.

[0007] A pneumatic component, which penetrates through the bottom plate. The air inlet and air outlet of the pneumatic component are respectively connected to one end of an air inlet path and an air outlet path, and the other ends of the air inlet path and the air outlet path are respectively connected to an air inlet valve and an air outlet valve. The air inlet path and the air outlet path are both arranged inside the bottom plate, and the air inlet valve and the air outlet valve are arranged on the side surface of the bottom plate for connection to an external air source.

[0008] Preferably, one end of the clamping jaw is connected to the driving end of the pneumatic component, and the other end is used for pressing the workpiece. The clamping jaw is also rotatably connected to one end of a connecting arm, and the other end of the connecting arm is fixed to the pneumatic component. When the driving end of the pneumatic component drives the clamping jaw to move telescopically, the clamping jaw rotates around the connecting arm to clamp or release the workpiece.

[0009] Preferably, the intake air path includes a main intake air path and at least one branch intake air path. Both ends of each branch intake air path are respectively connected to the main intake air path and the intake port of the pneumatic component; the exhaust air path includes a main exhaust air path and at least one branch exhaust air path. Both ends of each branch exhaust air path are respectively connected to the main exhaust air path and the exhaust port of the pneumatic component.

[0010] The beneficial effect of the present invention is that in a fixture with an internal air path of the present invention, by arranging the air path connected to the pneumatic component inside the fixture base plate, it avoids the problems such as improper placement of the workpiece caused by chip accumulation at the external air pipe during milling processing. At the same time, the internal air path will not interfere with the milling equipment and has good airtightness, avoiding the situation of unstable air pressure and reduced clamping effect of the fixture caused by air leakage.

Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of a fixture with an internal air path of the present invention.

[0012] Figure 2 is a schematic structural diagram of the pneumatic component, the clamping jaw, the intake air path, and the exhaust air path in a fixture with an internal air path of the present invention.

Detailed Embodiments

[0013] To further elaborate on the technical means and effects adopted by the present invention, the following describes in detail in combination with the embodiments and the accompanying drawings of the present invention.

[0014] The present invention provides a fixture with an internal air path, including:

[0015] A base plate 1, on which a workpiece placement table 10 is provided. At least one clamping jaw 11 is provided outside the workpiece placement table 10. Each clamping jaw 11 is correspondingly connected to a pneumatic component 2 for clamping the workpiece;

[0016] A pneumatic component 2, which penetrates through the base plate 1. The intake port 21 and the exhaust port 22 of the pneumatic component 2 are respectively connected to one end of the intake air path 3 and the exhaust air path 4. The other ends of the intake air path 3 and the exhaust air path 4 are respectively connected to an intake valve 50 and an exhaust valve 51. The intake air path 3 and the exhaust air path 4 are both arranged inside the base plate 1. The intake valve 50 and the exhaust valve 51 are arranged on the side of the base plate 1 for connection to an external air source.

[0017] Among them, one end of the clamping jaw 11 is connected to the driving end 20 of the pneumatic component 2, and the other end is used for pressing the workpiece. The clamping jaw 11 is also rotatably connected to one end of a connecting arm 110. The other end of the connecting arm 110 is fixed to the pneumatic component 2. When the driving end 20 of the pneumatic component 2 drives the clamping jaw 11 to move telescopically, the clamping jaw 11 rotates around the connecting arm 110 to clamp or release the workpiece.

[0018] Among them, the intake air passage 3 includes a main intake air passage 30 and at least one branch intake air passage 31. Both ends of each branch intake air passage 31 are respectively connected to the main intake air passage 30 and the intake port 21 of the pneumatic component 2; the exhaust air passage 4 includes a main exhaust air passage 40 and at least one branch exhaust air passage 41. Both ends of each branch exhaust air passage 41 are respectively connected to the main exhaust air passage 40 and the exhaust port 22 of the pneumatic component 2.

[0019] In the embodiment of the present invention, three clamping jaws 11 are provided on the fixture, and correspondingly, three pneumatic components 2 are provided, and all of them are cylinders. Each pneumatic component 2 is provided with an intake port 21 and an exhaust port 22. Correspondingly, the intake air passage 3 includes a main intake air passage 30 and three branch intake air passages 31, and the exhaust air passage 4 includes a main exhaust air passage 40 and three branch exhaust air passages 41. When the fixture works, the intake valve 50 and the exhaust valve 51 are connected to an external air source. Gas enters the main intake air passage 30 from the intake valve 50, then enters each branch intake air passage 31 respectively and enters each pneumatic component 2 through each intake port 21. The pneumatic component 2 drives the clamping jaws 11 to press or release the workpiece placed on the workpiece placement table 10. The gas is correspondingly discharged from each exhaust port 22 to each branch exhaust air passage 41, and then converges into the main exhaust air passage 40 and is finally discharged through the exhaust valve 51.

[0020] The beneficial effect of the present invention is that in a fixture with an internal air passage of the present invention, by arranging the air passage connected to the pneumatic component 2 inside the fixture base plate, it avoids the bad situation such as the workpiece not being placed in place caused by chip accumulation at the external air pipe during milling processing. At the same time, the internal air passage will not interfere with the milling equipment and has good airtightness, avoiding the situation of unstable air pressure and reduced clamping effect of the fixture caused by air leakage.

[0021] It should be noted that the present invention is not limited to the above embodiments. Any simple modification, equivalent change and modification made by any person skilled in the art to the above embodiments based on the technical solution of the present invention all fall within the protection scope of the present invention.

Claims

1. A fixture with a built-in air circuit, characterized in that Comprising: A bottom plate, on which a workpiece placement table is provided. At least one clamping jaw is provided outside the workpiece placement table, and each clamping jaw is correspondingly connected to a pneumatic component for clamping the workpiece. A pneumatic component, which is disposed through the bottom plate. The air inlet and air outlet of the pneumatic component are respectively connected to one ends of an air inlet passage and an air outlet passage. The other ends of the air inlet passage and the air outlet passage are respectively connected to an air inlet valve and an air outlet valve. The air inlet passage and the air outlet passage are both disposed inside the bottom plate, and the air inlet valve and the air outlet valve are arranged on the side surface of the bottom plate for connecting to an external air source.

2. The fixture with an internal air circuit according to claim 1, characterized in that: One end of the clamping jaw is connected to the driving end of the pneumatic component, and the other end is used for pressing the workpiece. The clamping jaw is also rotatably connected to one end of a connecting arm, and the other end of the connecting arm is fixed on the pneumatic component. When the driving end of the pneumatic component drives the clamping jaw to perform telescopic movement, the clamping jaw rotates around the connecting arm to clamp or release the workpiece.

3. The fixture with an internal air circuit according to claim 1, characterized in that: The air inlet passage includes a main air inlet passage and at least one sub-air inlet passage. Both ends of each sub-air inlet passage are respectively connected to the main air inlet passage and the air inlet of the pneumatic component; the air outlet passage includes a main air outlet passage and at least one sub-air outlet passage. Both ends of each sub-air outlet passage are respectively connected to the main air outlet passage and the air outlet of the pneumatic component.

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