CN86205524U

CN86205524U - Bench vice with fast jaw-moving mechanism

Info

Publication number: CN86205524U
Application number: CN 86205524
Authority: CN
Inventors: 孙宗杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-08-08
Filing date: 1986-08-08
Publication date: 1987-09-16

Abstract

The utility model relates to a bench vice with fast jaw-moving mechanism, which belongs to mechanical tool device. The design adopts a releasing mechanism, a lockout mechanism and a safety mechanism, which makes the jaw accomplished two transmissions: 1. Quick travel: when freed from the force, the jaw can release from the thread transmission and pull away or propel to the work pieces fast and easy by dint of the releasing mechanism. 2. Thread transmission: the thread transmission is combined by dint of the releasing mechanism and the transmission is ensured through the lockout mechanism and the safety mechanism and obtained larger clamping force and the bench vice can clamp the work piece tightly under the circumstance when the rotary screw is shortage of one circle. The utility model has the advantages of labor saving, high efficiency, convenient operation and work saving.

Description

Bench vice with fast jaw-moving mechanism

The design belongs to the machine tool class, and the structure of traditional-handwork vice is described by SG90-82 " bench vice " standard of China National Light Industrial Products Department's promulgation; Drive by bolt and nut, jaw moves complete in the rotary screw realization of enclosing the land, the size of vice clamping force depends on screw handle arm of force length and thread pitch size, for obtaining larger clamping force, the general design of thread pitch is less, this can make and open or during closed jaw, the screw rod rotating cycle increases, and as the screw rod of 4 millimeters pitch, makes jaw from 0 to 150 millimeters, rotate 37 five circles, at least use two or three minutes time, inefficiency, in addition, handle is can two ends in screw hole movable back and forth, rotates very inconvenient with singlehanded multi-turn.

For overcoming above-mentioned shortcoming, the newly-designed vice that has jaw fast moving mechanism, the invention main points are; Adopt trip gear, make jaw under different situations, two kinds of kinds of drive are arranged; When the needs jaw has big strength to clamp, make screw thread transmission system closure by trip gear, and guarantee unlikely unexpected disconnection of this transmission system reliable operation by locking mechanism and insurance institution, can the disengage threads transmission when not having clamping force on the jaw and do not need the big strength of output, directly pull moving caliper and move forward and backward, this has just realized in clamping or has unclamped the instantaneous bigger strength output that has.When the needs jaw fast near or during away from work, can move rapidly again.

The present invention and prior art something in common; All be that rotary screw drives the reciprocal continuous motion of moving caliper and can be with the larger clamping force clamping work pieces, and the design's technical characterictic is; Can cut off the screw thread driving-chain by trip gear, make the instantaneous screw rod that is not subjected to of moving caliper, the nut restriction, and can be by the direct push-and-pull of hand, move to any position of impulse stroke, later can have the larger clamping force that general vice has again in the screw thread combination, so the design compared with prior art, has the following advantages;

1. laborsaving; It is unnecessary to save, and repeats, arduously the merit done of rotary screw.

2. save time; Can within one or two seconds, like a cork jaw be moved to maximum immediately or shift minimum position onto, existing vice will revolve screw rod tens circles and milli takes several used times of above-mentioned vice that decuple, particularly differ being installed of bigger different parts for the clamping area size, and work as a workpiece and must just can clamp the less position of back size later on put into jaw than large part, the design's vice, laborsaving under the contrast, save time then more obvious.

3. easy operation; Clamp or when unclamping workpiece, existing vice must repeatedly be put in order the circle rotary screw, and screw handle, " vice is more than 200 millimeters, and the 3 D plane of complete cycle rotation then formation 400 mm dias sometimes because of spatial constraints; handle very inconvenient; the design can finish above-mentioned action under the rotary screw less than situation in one week, and is convenient to a hand-held workpiece, a manual operating vice as 5.

The design's structural principle is seen accompanying drawing;

Wherein, 1. moving caliper, 2. screw rod, 3. screw handle, 4. control crank, 5. torsion spring, 6. control stick, 7. control stick slide block, 8. fixed caliper, 9. nut, 10. half-nut slide block, 11. screw rod spacing rings.

Trip gear; By zigzag tooth form half-nut slide block 10, control stick slide block 7, control stick 6, torsion spring 5, control crank 4 compositions such as grade, when pressing control crank 4, can overcome the power of torsion spring 5, drive control stick 6, rotary oscillation also drives the slide block 7 that can be in axial sliding thereon, same-phase swing is stirred half-nut slide block 10 again along radially the moving up and down of screw rod 2, and realizes coincideing or throwing off of form of thread.

Locking mechanism; By half-nut slide block 10, control stick slide block 7, control stick 6, torsion spring 5 is formed.Torsion spring 5, give tight power and put on the control stick 6 reversing on it, be pressed on the acting surface of half-nut slide block 10 at the control stick slide block 7 that can slide vertically on the control stick 6 via keyway on it and by the screw drive, make the form of thread fine identical, this moment, the effect contact point of control stick slide block 7 and half-nut slide block 10 was in control stick 6 centers near the line at screw rod 2 centers, add and give nearly twisting force on the torsion spring 5, half-nut slide block 10 promptly is in the lock-out state of self-locking, can not occur being pressed by it, anti-pass is moved and is made control stick slide block 7 by control stick 6, overcome the tight power of giving of torsion spring 5 and counter rotation is moving, the screw thread transmission is thrown off.

Insurance institution; Be made up of sieve bar spacing ring 11 on the screw rod 2 and the nut 9 of screw rod tail, they can prevent that screw rod 2 may be when stressed, radial displacement and break away from the screw thread combination.

Radial component when combining with half-nut slide block 10 for eliminating screw rod 2, its screw thread adopts the zigzag tooth form.

Handle clamping work pieces, can press control crank 4 earlier, control stick slide block 7 is thrown off half-nut slide block 10 and screw rod 2, pull out moving caliper 1 suitably apart from knocking off part between jaw, push away moving caliper 1 to the jaw contact workpiece, loosen control crank 4, screw screw handle one week of 3 less thaies again, can finish clamping action.

Unclamp chucking and take out workpiece; Can unscrew screw handle 1/3 week of 3 less thaies (need only screw rod 2 and remove, and have very little gap to get final product) earlier, press control crank 4 then and can pull out suitable distance taking-up workpiece to moving caliper with the pushing face of flight pressure of half-nut slide block 10.

Draw general assembly drawing and other part figure through applicant's actual design, and calculate through necessity, big portion material promptly closes requirement with casting pig, common straightcarbon steel manufacturing, and a screw rod 2, half-nut slide block 10 adopt: No. 45 steel or 45Mn2 or 40MnB get final product.

Claims

1, the vice that has jaw fast moving mechanism, it is by fixed caliper 8, moving caliper 1 and be made up of the clamp mechanism fractional part that screw rod 2 etc. forms is characterized in that design adopted trip gear, locking mechanism and insurance institution.

2, by the described vice that has jaw fast moving mechanism of claim 1, it is characterized in that; Trip gear is by half-nut slide block 10 and control stick slide block 7, control stick 6, torsion spring 5, control crank 4 compositions such as grade.

3, by the described vice that has jaw fast moving mechanism of claim 1, it is characterized in that; Locking mechanism is by torsion spring 5, control stick 6, and control stick slide block 7 and half-nut slide block 10 are formed.

4, by the described vice that has jaw fast moving mechanism of claim 1, it is characterized in that; Insurance institution is made up of screw rod spacing ring 11 and screw rod tail nut 9.

5, by the described vice that has jaw fast moving mechanism of claim 1, it is characterized in that; Half-nut slide block 10 in trip gear and the locking mechanism combines with screw rod 2, has adopted the transmission of zigzag tooth form screw thread.