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Pneumatic rotary clamping device

A technology of clamping device and rotating structure, applied in the direction of clamping device, positioning device, clamping, etc., can solve the problems of reducing the strength of the piston rod, easy to break the piston rod, etc. Effect

Inactive Publication Date: 2015-01-28
CHONGQING JINLUN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of directly setting a spiral groove on the piston rod of the cylinder will significantly reduce the strength of the piston rod. Because the piston rod is subjected to axial force and torsion, the piston rod is easy to break

Method used

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  • Pneumatic rotary clamping device
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A pneumatic rotary clamping device, comprising a cylinder 1 and a pressing arm 4, the pressing arm 4 is connected to the piston rod 11 of the cylinder 1 through bolts, wherein a rotating structure located in the cylinder 1 is also provided, and the rotating structure includes an integrally connected base 23 and the spindle 21, the longitudinal section of the base 23 is in the shape of a boss, the flange on the base 23 is connected to the cylinder 1 by bolts, and a sealing ring 25 is arranged between the base 23 and the inner wall of the cylinder 1, and the spindle 21 is axially upward A spiral groove 22 is provided, and the mandrel 21 coaxially slides and fits with the piston rod 11 from the side of the piston seal 12 of the cylinder 1 . The piston seal 12 of the cylinder 1 is provided with a guide structure matching the spiral groove 22 .

[0015] In this embodiment, the guide structure includes a spring seat 31, a compression spring 32 and a steel ball 33. One end of t...

Embodiment 2

[0019] The difference from Embodiment 1 is that the guiding structure includes a mounting seat and a guide pin that can cooperate with the spiral groove 22. One end of the guide pin is connected to the mounting seat, and the mounting seat is connected to the piston seal 12 of the cylinder 1. The guide pin guiding structure is simpler .

[0020] Specific use process:

[0021] Taking Example 1 as an example, such as figure 1 As shown, the clamping of the workpiece 5 by the downward movement of the pressing arm 4 is taken as an example for illustration, and the figure shows the state of clamping the workpiece 5 . The air hole in the lower part of the cylinder 1 intakes air. At this time, the piston seal 12 of the cylinder 1 moves upward, and the steel ball of the guiding structure in the piston seal 12 first moves upward along the linear groove 24 on the mandrel 21. When it moves to the spiral groove 22, The steel ball slides with the spiral groove 22. At this time, the piston ...

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Abstract

The invention relates to a workpiece clamping device, in particular to a pneumatic rotary clamping device. The pneumatic rotary clamping device comprises a cylinder, a pressing arm and a rotary structure, wherein a piston rod of the cylinder is connected with the pressing arm; the rotary structure is fixed in the cylinder and comprises a base and a mandrel; a spiral groove is formed in the axial direction of the mandrel; the mandrel is in coaxial sliding fit with the piston rod from one side of a piston seal of the cylinder; a guide structure matched with the spiral groove is arranged in the piston seal of the cylinder. The pneumatic rotary clamping device facilitates take-out and put-in of a workpiece, and the service life of the piston rod can be prolonged.

Description

technical field [0001] The invention relates to a workpiece clamping device, in particular to a pneumatic rotary clamping device. Background technique [0002] As a clamping and positioning tool for workpieces, clamping devices are widely used in the processing and manufacturing of workpieces. The pressure plate of the existing clamping device uses an ordinary cylinder as the power source, and the piston rod of the cylinder drives the jaws or the pressure plate to clamp the workpiece. However, when the workpiece is taken out and the workpiece is placed in the processing position, the The obstruction of the jaws or the pressure plate makes it inconvenient to take out or put in the workpiece. In the rotary clamping device with Chinese patent application number 2013106006670, it includes a cylinder and a pressure plate connected to the piston rod of the cylinder, wherein a spiral groove is formed on the circumference of the piston rod of the cylinder, and a cylinder wall is fi...

Claims

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Application Information

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IPC IPC(8): B23Q3/08
CPCB23Q3/08B23Q2703/04
Inventor 吴明喜
Owner CHONGQING JINLUN IND
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