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Hydraulic drill chuck

A drill chuck and hydraulic technology, applied in the direction of clamping, tool joints, supports, etc., can solve the problems of easy wear of threads, clamping force limitation of jaws, loosening, etc.

Inactive Publication Date: 2005-10-05
ZHE JIANG SAN OU MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way of transmission, the clamping force of the jaws is limited, which in turn affects the transmission of torque
At the same time, the thread is easy to wear under the influence of repeated rotation or misoperation, which affects its service life
Moreover, the threaded connection between the nut and the jaw will loosen due to vibration during use, which will affect the clamping of the tool

Method used

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  • Hydraulic drill chuck
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Examples

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Embodiment Construction

[0015] Refer to attached picture. The present invention includes the clamping element 4 of the tool, which is also provided with an oil pool 1, front and rear oil chambers 2, 3 for clamping or loosening the clamping element, an oil filling mechanism and an oil return passage 101 for the front and rear oil chambers, and an oil injection Mechanism and oil return passage communicate with the reversing mechanism 5 of the front and rear oil chambers.

[0016] Refer to attached figure 1 , the oil injection mechanism includes a one-way valve 6 communicated with the oil pool and a one-way valve 7 communicated with the oil pool, and an oil injection piston 8 is arranged between the two one-way valves. Such as figure 1 As shown, the one-way valve 6 includes a steel ball valve core 18 and the spring 9 behind it, and the one-way valve 7 also includes a steel ball valve core 10 and the spring 11 behind it. The oil pool surrounds the chuck body 12, and several such oil injection mechanis...

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PUM

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Abstract

The present invention provides a hydraulic drill-chuck. It comprises holding element of tool, its also has oil sump, front and rear oil chambers capable of making holding element be chucked or released, oil-injecting mechanism for front and rear oil chambers and oil-returning channel, it also comprises a reversing mechanism respectively connected with oil-injecting mechanism, oil-returning channel and front and rear oil chambers.

Description

technical field [0001] The invention relates to the technical field of drill chucks. Background technique [0002] At present, in the field of drill chuck technology, threaded connection is generally used to drive the jaws forward and backward to clamp or loosen the tool. For example, it includes a hollow drill body, and the drill body is provided with three inclined oblique holes at equal intervals along the circumference. A gripper is slidably installed in each inclined hole, and a nut is arranged in the middle annular groove of the drill body, and the nut and each gripper are connected together through threads; the nut is driven to rotate through the driving structure, Thereby driving the jaws forward and backward. In this way of transmission, the clamping force of the jaws is limited, which in turn affects the transmission of torque. At the same time, the thread is easy to wear under the influence of repeated rotation or misoperation, which affects its service life. M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B31/12B23B51/12B23Q3/12
Inventor 芮祥坤
Owner ZHE JIANG SAN OU MASCH CO LTD