CN102990550A - Synchronous clamping mechanism - Google Patents

Abstract

The invention relates to the field of clamping devices, and particularly relates to a synchronous clamping mechanism. The synchronous clamping mechanism is simple in structure, can clamp a work-piece from two ends at the same time, and ensures that the work-piece does not deviate in the clamping process. The synchronous clamping mechanism comprises a base. The synchronous clamping mechanism is characterized in that a reference plane is arranged at the upper end of the base; two symmetrical support frames are arranged on the base; the two support frames are connected through a rotatable screw; symmetrical positive and reverse threads are arranged at two ends of the screw; nuts in screw-thread fit with the screw are symmetrically arranged at two ends of the screw; and clamping devices are symmetrically arranged on the two nuts.

Description

A kind of synchronous clamping mechanism

Technical field

The present invention relates to the clamping device field, be specially a kind of synchronous clamping mechanism.

Background technology

Workpiece is in the operating process such as processing, detection, maintenance, all need workpiece is fixed, general fixing mode has clamping, compression etc., clamping mode simple and fast wherein, more commonly used, general clamping need to act on respectively from two ends, having had good positioning when workpiece is positioned on the table top, and when clamping from two ends, general clamping device can not be clamped the workpiece two ends simultaneously, when asynchronous, with workpiece movable, break away from the position of originally having good positioning easily, need to reorientate, and to reach the instrument that accurate synchronization clamps needs more complicated, cost is higher.

Summary of the invention

In order to address the above problem, the invention provides a kind of synchronous clamping mechanism, it is simple in structure, can from two ends while clamping work pieces, guarantee that workpiece is not offset in clamping process.

Its technical scheme is such: it comprises base, it is characterized in that, described base upper end is datum plane, be provided with the bracing frame of two symmetries on the described base, connect by rotatable screw rod between two support frames as described above, described screw rod two ends are provided with symmetrical positive/negative thread, and described screw rod two ends are symmetrically arranged with the nut that cooperates with described screw flight, are symmetrically arranged with clamping device on two described nuts.

It is further characterized in that described screw rod one end arranged outside has swivel bolt; Described clamping device comprises clamping bar, and the described bar inboard of stepping up is provided with clamping head.

After adopting structure of the present invention, the base upper end is datum plane, be provided with the bracing frame of two symmetries on the base, connect by rotatable screw rod between two bracing frames, the screw rod two ends are provided with symmetrical positive/negative thread, the screw rod two ends are symmetrically arranged with the nut that cooperates with screw flight, be symmetrically arranged with clamping device on two nuts, it is simple in structure, rotary screw, positive/negative thread by symmetry can be so that the clamping device synchronizing moving from two ends while clamping work pieces, guarantees that workpiece is not offset in clamping process.

Description of drawings

Fig. 1 is structural front view of the present invention;

Fig. 2 is structure top view of the present invention.

The specific embodiment

See Fig. 1, shown in Figure 2, it comprises base 1, and base 1 upper end is datum plane, be provided with the bracing frame 2 of two symmetries on the base 1, screw rod 3 two ends are provided with symmetrical plus thread 4, left-hand thread 5 to two 2 of bracing frames by rotatable screw rod 3 connections, and screw rod 3 two ends are symmetrically arranged with the nut with screw rod 3 threaded engagement, be symmetrically arranged with clamping device 9 on two nuts, clamping device 9 comprises clamping bar 7, steps up bar 7 inboards and is provided with clamping head 8, and screw rod 3 one end arranged outside have swivel bolt 6.

Its operation principle is as described below: because screw rod 3 two ends are provided with symmetrical plus thread 4, left-hand thread 5, during rotary screw 3, two clamping devices 9 can move in or out simultaneously, it is synchronizing moving, when workpiece after the centralized positioning of datum plane is good, rotary screw 3 gets final product clamping work pieces, and workpiece is offset; When workpiece is not in the center, by rotary screw 3, two hold down gag 9 synchronizing movings, because hold down gag 9 is symmetrically arranged, when hold down gag 9 clamping work pieces at two ends, workpiece namely is in the center of datum plane, is provided with more easily rotary screw 3 of swivel bolt 6.

Claims (3)

1. synchronous clamping mechanism, it comprises base, it is characterized in that, described base upper end is datum plane, be provided with the bracing frame of two symmetries on the described base, connect by rotatable screw rod between two support frames as described above, described screw rod two ends are provided with symmetrical positive/negative thread, described screw rod two ends are symmetrically arranged with the nut that cooperates with described screw flight, are symmetrically arranged with clamping device on two described nuts.

2. a kind of synchronous clamping mechanism according to claim 1 is characterized in that, described screw rod one end arranged outside has swivel bolt.

3. a kind of synchronous clamping mechanism according to claim 2 is characterized in that, described clamping device comprises clamping bar, and the described bar inboard of stepping up is provided with clamping head.

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