A Two-way Self-Centering Fixture for Workpieces
A self-centering fixture and self-centering clamping technology, used in manufacturing tools, metal processing mechanical parts, clamping and other directions, can solve the problems of waste, difficult to achieve self-centering of large cylindrical workpieces, etc., and achieve simple and convenient expansion and contraction. , High centering accuracy, and the effect of enhancing versatility
Active Publication Date: 2016-04-27
JILIN UNIV
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AI Technical Summary
Problems solved by technology
If the cross-section of the cylindrical workpiece is too large, the three-jaw chuck is limited by the precision of the alveolar plate and cannot be made too large, and the self-centering of large cylindrical workpieces is not easy to achieve
Versatility should be the direction of fixture development, but in the actual production process, in order to hold the workpiece to be processed, fixtures are often designed for a single variety. After processing a batch of parts, the fixture is useless. Turned into waste materials, resulting in great waste
Method used
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[0022] The two-way self-centering clamping mechanism 1 is fixedly connected with the base 2, the nut pressing plate 7 is fixedly connected with the base 2, the nut pressing plate 7 is crimped with the lock nut 6, the locking screw 5 is threadedly connected with the locking nut, and the front end of the locking screw It is hemispherical and connected to the top of the two-way self-centering clamping mechanism, the locking handle 4 is fixedly connected to the rear end of the locking screw, and the top component 3 is located below the through hole on the base 2;
[0023] The structure of the two-way self-centering clamping mechanism 1 is: four clamping blocks 101 are arranged in combination to form a rectangular shape, and each clamping block 101 has three bolt holes 103 and two positioning pin holes 102 on the upper end surface. There are two sections of threads to the double-threaded screw 104, which are separated from the middle, one section of left-handed thread 108, and the o...
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The invention relates to a bidirectional self-centering fixture for workpieces, and belongs to the field of machinery manufacturing. A bidirectional self-centering clamping mechanism is fixedly connected with a base. A nut pressing plate is fixedly connected with the base. The nut pressing plate is connected with a locking nut in a pressed mode. A locking screw is connected with the locking nut in a threaded mode. The front end of the locking screw is in a semi-sphere shape and is connected with the bidirectional self-centering clamping mechanism in an abutted mode. A locking handle is fixedly connected with the rear end of the locking screw. A tip assembly is located below a conical face hole in the base. The bidirectional self-centering fixture is high in universality, especially suitable for the workpieces with the sections being quadrilateral or polygonal, high in bidirectional self-centering accuracy and easy to operate.
Description
technical field [0001] The invention belongs to the field of mechanical manufacturing, in particular to a fixture for commonly used workpieces. Background technique [0002] With the further development of the manufacturing industry, various fixtures emerge in endlessly. It is more common to clamp workpieces with circular cross-sections, but it is difficult to center and clamp workpieces with square and other polygonal cross-sections, and it is even more difficult to rotate the workpieces on a fixed axis. solve. The four-jaw chucks commonly used on machine tools are mostly centered by drawing lines, which undoubtedly increases the work intensity for workers, especially when centering and clamping tool steel. If the cross-section of the cylindrical workpiece is too large, the three-jaw chuck is limited by the precision of the alveolar plate and it is inconvenient to make it too large, and the self-centering of the large cylindrical workpiece is not easy to realize. Versatil...
Claims
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IPC IPC(8): B23Q3/00
CPCB23Q3/00B23Q2703/02
Inventor 冀世军刘雷雷赵继张雷周淑红胡志清王晓晖刘孝龙
Owner JILIN UNIV