CN2220340Y

CN2220340Y - Quick clamping fixture

Info

Publication number: CN2220340Y
Application number: CN 95200867
Authority: CN
Inventors: 刘有鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-12
Filing date: 1995-01-12
Publication date: 1996-02-21
Anticipated expiration: 2005-01-12

Abstract

The utility model relates to a quick clamping fixture belonging to a machinery fastening device which comprises a main scale and two pawls connected to the main scale. A screw rod is movably connected to the lower part of the pawl. At least one of the pawls can slide on the main scale. A gap exists between the main scale and the sliding pawl. The gap on the sliding surface is at least 0.02 mm. The utility model has the advantages of quick and convenient adjustment to the clamping sizes, simple structure, low cost and strong versatility. The utility model can be used in the technical field of machinery, etc.

Description

A kind of anchor clamps of quick clamping

The utility model belongs to a kind of mechanical fastening device, relates in particular to a kind of anchor clamps of friction grip.

Existing workpiece fastening clips is arc clamp (card is blue) mostly, its version is screw micrometer, its main component is a toxoplasm, by the handlebar rotating screw bolt, screw rod is moved while rotating, the foot pad that connects with screw front end is also at any time to be moved, thereby reaches the purpose of regulating clamping size and clamping.The weak point of existing apparatus is: when clamping change in size scope is big, regulate time-consuming, also inconvenient; Toxoplasm manufacturing procedure complexity, in order to adapt to different clamping sizes, the specification of arc clamp is also more, and part generalization degree is low, the manufacturing cost height, and be not easy to produce and management; And handlebar makes also that similar in appearance to the handlebar of general vice operation is not very convenient.

At the deficiency with upper clip, the purpose of this utility model is to provide a kind of anchor clamps of quick clamping, and it is easy to operate, regulates fast, and is simple in structure, with low cost.

The utility model becomes the arc clamp of screw micrometer formula a kind of anchor clamps of slide measure formula, two claws that it comprises and connects with main scale, the lower thread of claw is connected with leading screw, wherein have at least a claw on main scale, to slide, gapped between slip claw and the main scale, the gap between its sliding surface is at least more than 0.02 millimeter.Movable jaw can arbitrarily move and rest on the optional position on main scale, so adjusting clamping size is quick and convenient.Owing between the sliding surface between movable jaw and main scale the space is arranged, make the movable jaw self-locking of on main scale, tumbling, thereby realize the purpose that clamps.Reliable for self-locking, main scale can be a polygon with the cross sectional shape that cooperates of movable jaw, and purpose is to utilize V-arrangement face equlvalent coefficient of friction greater than this characteristic of planar friction coefficient, also can adopt circle or other cross sectional shape when the energy self-locking.Between the length of movable jaw and the width certain proportion is arranged, its scale is decided according to the coefficient of friction of manufactured materials and the shape of sliding surface.The anchor clamps of design different size, the length that only needs to change main scale gets final product, and remaining parts generally can be general, the length of main scale can be by the full-length produced in series, also can be special as required, reach several meters as shipbuilding industry for bulk-breaking pre-determined bit main scale length to weldment, even tens meters.

The utility model adjusting clamping size is very convenient, fast, simple in structure, and part universality is strong, low production cost, and tool management is convenient, but all fields of extensive use machinery.

The utility model is described in further detail below in conjunction with embodiment that accompanying drawing provides.

Fig. 1 is a kind of jig schematic diagram with main scale of double-wedge section.

Fig. 2 is A-A cutaway view of Fig. 1.

As figure; stationary jaw (1) is welded as a whole with main scale (2); for workpiece is contacted well with the jaw of stationary jaw when clamping; go up processing clearancen cutter at stationary jaw (1); use hand propelled movable jaw (4) to two pawls while contact workpiece when regulating the clamping size; rotate handgrip (8) and leading screw (5) with hand then; handgrip (8) and leading screw (5) with connect with pin (7); also has metallic sheath (6) protection handgrip (8); leading screw (5) and foot pad (3) are with being threaded into; the bulb of leading screw during work (5) termination makes foot pad (3) that the effect of self-alignment centering be arranged, and foot pad (3) is contacted well with workpiece.Workpiece is to (4) reaction forces of movable jaw during clamping, make movable jaw (4) produce a tilting moment with respect to main scale (2), under the effect of this moment, make movable jaw (4) go up self-locking at main scale (2), thereby reach not sliding backward moving back on main scale (2) of movable jaw (4), thereby realize the purpose of clamping.

Claims

1, a kind of anchor clamps of quick clamping, comprise main scale (2) and claw (1) that connects with main scale (2) and claw (4), the lower thread of claw is connected with leading screw (5), it is characterized in that claw (1) or claw (4) have at least one can go up slip at main scale (2), gapped between slip claw and the main scale (2), the gap between its sliding surface is at least more than 0.02 millimeter.