CN203853839U

CN203853839U - Clamp claw structure

Info

Publication number: CN203853839U
Application number: CN201420163053.0U
Authority: CN
Inventors: 王建飞
Original assignee: Nanjing Jian Ke Machinery Co Ltd
Current assignee: Nanjing Jian Ke Machinery Co Ltd
Priority date: 2014-04-04
Filing date: 2014-04-04
Publication date: 2014-10-01
Anticipated expiration: 2024-04-04

Abstract

The utility model discloses a clamp claw structure, comprising a clamp claw seat, a clamp claw sleeve and a clamp claw, wherein the middle of the clamp claw and the clamp claw seat are connected by a rotary shaft, the periphery of the clamp claw is provided with a free end, a transmission end and a limiting end, and the free end is in contact with an external sliding sleeve and can rotate and move vertically along the sliding sleeve under the pushing force of the sliding sleeve; the transmission end is connected to an external ejector rod, when the free end moves vertically, the transmission end can be driven to rotate, and the ejector rod is driven to move front and back; the limiting end and the clamp claw seat can be arranged in a contact way, and when the free end slides to the highest point, the limiting end butts against the clamp claw seat. The clamp claw structure is simple in structure, convenient to assemble, not easy to damage, convenient for workers to control, high in work accuracy and good in control effect.

Description

A kind of claw structure

Technical field

The utility model relate to a kind of walk the claw structure of scheming Special clamping portion.

Background technology

Scheming is walked in existing numerical control, and the retaining part of its workpiece comprises that the handle of forging a knife, Y are inserted, bearing, push rod, sliding sleeve, and is arranged on the claw on top hook seat.Bearing tight fit connection is on sliding sleeve, and the slotting shank of Y is connected with the handle of forging a knife, the slot place clamping bearing that Y is slotting, and this structure is directly enclosed within on top hook seat, and claw one end arranges impetus and props up push rod.This kind of structure, in the time that claw seesaws, claw be hidden in sliding sleeve inner side coordinating of sliding sleeve, in the time that workpiece is processed inaccuracy or is equipped with error, claw can not well be controlled by workman with coordinating of sliding sleeve, dismounting is inconvenient equally, if error appears in part processing, very easily causes chuck not tight processing bar.

Summary of the invention

The technical problems to be solved in the utility model is that scheming is walked in existing numerical control, the Standard difficulty of the retaining part of its workpiece, easily damages, is not easy to workman and control, and easily occurs the phenomenon of chuck not tight processing bar.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of claw structure, comprise master jaw, catch jacket and claw, described claw middle part is connected by rotating shaft with master jaw, claw periphery is provided with free end, driving end, and positive stop end, the sliding sleeve of described free end contact peripheral hardware, and can be under the thrust of sliding sleeve, along the upper and lower rotary moveable of sliding sleeve; Described driving end connects the push rod of peripheral hardware, when aforementioned free end is up and down, can drives driving end rotation, and drive push rod to seesaw; Described positive stop end can contact setting with master jaw, and in the time that free end slides into peak, positive stop end props up master jaw.

When this structure is slided claw on sliding sleeve, be exposed to completely in people's sight line, facilitate workman to operate, can ensure that chuck clamps workpiece, be difficult for causing the problem of chuck not tight processing bar.

The utility model has the advantages that: simple in structure, easy to assembly, not fragile, be convenient to workman control, operating accuracy is high, controls effective.

Brief description of the drawings

Fig. 1 is the structural representation that the retaining part of scheming workpiece is walked in existing numerical control.

Fig. 2 is the structural representation of top hook seat in Fig. 1.

Fig. 3 is the utility model structural representation.

Fig. 4 is the structural representation of the claw of Fig. 3.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is done furtherly.

As shown in Figure 1-2, walk on scheming (being numerically-controlled milking composite machine tool) market in existing numerical control, the existing structure of retaining part of workpiece comprises that the handle 1 of forging a knife, Y insert 2, bearing 3, push rod 4, M38 nut 5, needle bearing 6, auxiliary material structure 7, top hook seat 8, sliding sleeve 9, holding screw 10, M55*1.0 nut 11, claw 12, main shaft 13, needle bearing 14, spring 15, chuck 16, chuck 17, front chuck nut 18.

Bearing 3 close-fittings are on sliding sleeve, and M55*1.0 and sliding sleeve 9 have screwed the effect of fixing and locking bearing 3, and Y inserts 2 shanks and is enclosed within the symmetrical hole of the handle 1 of forging a knife, and locks with holding screw 10, and the slot place of Y slotting 2 is stuck on bearing 3.After bearing 3, M55*1.0 nut 11, Y insert 2, the handle 1 of forging a knife, locking nut, sliding sleeve 9 assemblings finish, be enclosed within on top hook seat 8 with an overall structure.

Described top hook seat 8 is enclosed within on main shaft 13, claw 12 is assemblied on top hook seat 8, the impetus of claw 12 and push rod 4 coordinate, due to claw 12 impetus places non-perpendicular, in the time that the handle 1 of forging a knife pushes away forward (beating backward), impetus is against on push rod 4, before push rod 4, pushes away, spring 15 compresses, chuck 17 clamping collets 16.When the handle 1 of forging a knife is to pusher (beating forward) time, claw 12 application point places coordinate with sliding sleeve 9, unclamp push rod 4, so that unclamp chuck 16.The handle 1 of forging a knife depends on bearing 3 completely to the promotion of sliding sleeve 9, inserts 2 and promotes bearing 3 outer rings, thereby drive total by Y, and in the time of main shaft 13 High Rotation Speed, all structures such as sliding sleeve 9 are all rotated thereupon.

This structure is being walked on scheming market generally at present, and existing lathe adopts this structure substantially.

But the shortcoming of this structure is, in the time that claw 12 seesaws, can not well be controlled by workman with coordinating of sliding sleeve 9, dismounting is inconvenient equally, if error appears in part processing, very easily causes chuck 16 not tights processing bars.

As shown in Figure 3, number in the figure is as follows: master jaw 1, catch jacket 2, claw 3, holding screw 4, the handle 5 of forging a knife, copper billet 6, push away circle 7, M76 nut 8, M45 nut 9, sliding sleeve 10, main shaft 11, push rod 12, bearing pin 13;

The utility model claw structure comprises master jaw 1, catch jacket 2 and claw 3, described claw 3 middle parts are connected with master jaw 1 rotating shaft, claw 3 peripheries are provided with free end 3-1, driving end 3-2, and positive stop end 3-3, the sliding sleeve 10 of described free end 3-1 contact peripheral hardware, and can be under the thrust of sliding sleeve 10, along sliding sleeve rotary moveable Shang Xia 10; Groove setting on the push rod 12 of described driving end 3-2 cooperation peripheral hardware, when aforementioned free end 3-1 is up and down, can drives driving end 3-2 rotation, and drive push rod 12 to seesaw; Described positive stop end 3-3 can contact setting with master jaw 1, and in the time that free end 3-1 slides into peak, positive stop end 3-3 props up master jaw 1.

By contacting of positive stop end 3-3 and master jaw 1, prevent from when claw 3 from unclamping excessively ejecting, produce and clash into, cause damage; Free end 3-1 coordinates with sliding sleeve 10, has completed the clamping to workpiece.

In prior art, to rely on the handle of forging a knife to promote bearing to drive sliding sleeve to seesaw completely, after improvement, when the utility model uses, bearing holder (housing, cover) push away circle 7 in, lock bearing enclose by M76 nut 8 and M45 nut 9 respectively, meanwhile, M45 nut 9 screws with sliding sleeve 10 tailing screw flights, thereby by sliding sleeve 10 with push away circle and 7 be connected, bearing pin 13 is contained in and pushes away in the groove that circle 7 is relative with copper billet 6 cooperations, bearing pin 13 is contained in forges a knife in the handle 5 relative through holes in side, fixed by holding screw 4, forge a knife handle 5 by driving bearing pin 13, drive copper billet 6, thereby pushing away circle 7 seesaws, because sliding sleeve 10 by nut 9 with push away circle and 7 be connected, therefore, pushing away circle 7 drives sliding sleeve 10 realizations to seesaw, complete the object that promotes claw 3.

The difference of the utility model and prior art maximum is: claw 3 increases positive stop end, prevents that claw free end 3-1 from infinitely raising up, and causes claw 3 and catch jacket 2 to collide, and causes trouble.Claw 3 exposes outside sight line, facilitates installation and debugging, ensures clamping workpiece compactness.Promote the improvement of shift sleeve structure, avoided Y in prior art to insert directly promotion bearing, cause the very easily impaired of bearing, increase the permanence that part uses, from structural repair, be also simplified.

Claims

1. a claw structure, it is characterized in that: comprise master jaw, catch jacket and claw, described claw middle part is connected by rotating shaft with master jaw, claw periphery is provided with free end, driving end, and positive stop end, the sliding sleeve of described free end contact peripheral hardware, and can be under the thrust of sliding sleeve, along the upper and lower rotary moveable of sliding sleeve; Described driving end connects the push rod of peripheral hardware, when aforementioned free end is up and down, can drives driving end rotation, and drive push rod to seesaw; Described positive stop end can contact setting with master jaw, and in the time that free end slides into peak, positive stop end props up master jaw.