Electric chuck unit

An electric chuck and chuck technology, applied in the field of machinery, can solve the problems of dynamic balance, complex structure, difficult installation and maintenance, etc., achieve the effect of reducing mass, simple and compact structure of the device, and improving the quality of dynamic balance
CN1857837AInactive Publication Date: 2006-11-08CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2006-11-08
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The present invention relates to universal fixture widely used in machine manufacturing field, and is one kind of electric chuck unit. The electric chuck unit consists of a clamping unit, a power unit, an electromagnetic friction clutch assembly, a casing, an electromagnetic brake assembly, etc. When the electromagnetic brake assembly is powered, the clamping unit is connected to the head stock integrally without rotating; and when the electromagnetic friction clutch assembly is powered, the power unit transfers the rotation to the claws for clamping or unclamping the workpiece. During machining, only the clamping unit rotates with the main shaft. Compared with available technology, the present invention has the advantages of reduced rotating part number and weight, being favorable to raising the dynamic balance quality of the main shaft, etc.
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Description

technical field

[0001] The invention relates to a general fixture for clamping workpieces widely used in the mechanical field. Background technique

[0002] Power chucks are often used on CNC lathes and automatic lathes. In addition to hydraulic power chucks and pneumatic power chucks, electric chucks are also widely used. At present, the structure of most electric chucks is as follows: the chuck body is installed at the front end of the main shaft of the lathe, and the motor is installed at the rear end of the main shaft. Can clamp and loosen the workpiece. Patent WO9951380 discloses an electric chuck device. A harmonic gear reducer is installed in the chuck body at the front end of the main shaft of the lathe, and an electric power unit is installed at the rear end of the main shaft, including a motor and an electromagnetic clutch. connected by a hollow shaft. During the machining process, the chuck body, reducer, hollow shaft, main shaft and motor rotor rotate as a who...

Claims

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