CN2071551U

CN2071551U - Quick-mounting individually-acting chuck

Info

Publication number: CN2071551U
Application number: CN 90216532
Authority: CN
Inventors: 陈学锋
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-07-17
Filing date: 1990-07-17
Publication date: 1991-02-20

Abstract

The utility model relates to a machine tool accessory, especially a quick-mounting and independent chuck, comprising jaws (1), a screw rod (2), a chuck body (3), an anti-rotating pin (4), springs (5), a base (6), a clamping column drive shaft (7), a positioning screw bolt (8), a countersunk head twisting screw bolt (9), a clamping column (10), etc., wherein, the form of the clamping column drive shaft (7) can adopt the form of eccentric shaft or gear shaft. When the jaws move a larger distance or the positive jaws (inverse jaws) change into the inverse jaws (positive jaws), the driving mechanism of the clamping column can be operated by the handle of the chuck for driving the clamping column to move towards right, which causes the threaded portion by which the screw rod is engaged with the jaw to be disengaged, so the jaws can move quickly to the position in requirement in the radial groove of the chuck body. The moving time of the jaws is reduced, the efficiency of the production is enhanced, and the labor strength of workers is reduced.

Description

Quick-mounting individually-acting chuck

The utility model relates to a kind of machine tool accessories, specifically a kind of quick-clamping independent chuck.

Existing independent chuck, all be to utilize the rotation of screw mandrel to move clamping work pieces by the drive of the screw thread on claw claw, when moving than big distance and positive pawl (anti-pawl), the needs claw is changed to anti-pawl (positive pawl), must drive screw mandrel with chuck handle for a long time rotates so that claw moves, so both increased the clamping time, reduce production efficiency, increased operator's labour intensity again.

The purpose of this utility model will provide a kind of exactly can make the claw fast moving, thereby reduces the clamping time, enhances productivity, and reduces the novel independent chuck of labor strength.

The purpose of this utility model is achieved in that in the prior art screw mandrel can only rotate in fixed axis, and claw also can only utilize its screw thread to do slowly to move at the radial slot of the drive lower edge of screw mandrel disk body.Can make claw move this purpose along the disk body radial slot fast in order to reach, the method that the utility model adopts is to make outside the screw mandrel decapacitation rotates, also can in disk body, do translation along the direction that is parallel to the chuck axis, when claw needs fast moving, only need to rotate card post driving shaft, to right translation, the screw-threaded engagement of claw and screw mandrel is partly thrown off by card cornice movable wire bar, claw can move radially fast along the disk body radial slot like this.Concrete structure mode of the present utility model is: the quick-clamping independent chuck is by claw (1), screw mandrel (2), disk body parts such as (3) are formed, clamping has card post (10) on the shaft of screw mandrel (2), card post (10) merges by two half blocks and forms, both are by the fastening connection of countersunk head strand system bolt (9), in disk body (3), be provided with a cover card post driving mechanism, this mechanism is by stop pin (4), spring (5), seat (6), card post driving shaft (7) is formed, the upper and lower surface of stop pin (4) all offers square opening, its top square opening can cooperate with chuck handle, its underpart square opening cooperates the location with card post driving shaft (7) top, be provided with spring (5) therebetween, stop pin (4) is located by taper pin taper hole fit system with seat (6), card post driving shaft (7) matches with card post (10), and card post driving shaft (7) is by bolt (8) axial location.

Owing to use said structure, make the operator when the needs claw moves big distance and positive and negative pawl and changes mutually, needn't rotary screw rod, and the screw-threaded engagement of screw mandrel and claw is partly thrown off, and just can make claw fast moving in the disk body radial slot, so just saved the original long-time required time of rotary screw rod greatly, improved production efficiency, reduced operator's labour intensity, particularly for the bigger chuck of diameter, its effect is more remarkable.

Fig. 1 is the utility model eccentric shaft type structural representation.

Fig. 2 is the I enlarged drawing of Fig. 1.

Fig. 3 is the A--A profile of Fig. 1.

Fig. 4 is the B--B profile of Fig. 1.

Fig. 5 is the C--C profile of Fig. 1.

Fig. 6 is the utility model gear shaft type structural representation.

Fig. 7 is the A--A profile of Fig. 6.

Fig. 8 is the II enlarged drawing of Fig. 7.

Below in conjunction with accompanying drawing embodiment of the present utility model is further specified:

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5.The quick-clamping independent chuck is made up of claw (1), screw mandrel (2), disk body (3), anti-rotating shaft (4), spring (5), seat (6), card post driving shaft (7), bolt (8), countersunk head strand system bolt (9), card post (10), frame mode as previously mentioned, wherein blocking post driving shaft (7) is eccentric shaft, and the elongated hole of offering on eccentric shaft and card post (10) matches.When needs claw (1) moves big distance or need positive pawl (anti-pawl) to be changed to anti-pawl (positive pawl), the square toes of chuck handle are inserted stop pin (4) top square hole and make its compression spring (5), after two taper pins of stop pin (4) are thrown off in the taper hole of seat (6), move to right with 180 ° of spanner drive eccentric shaft clockwise direction rotations and drive card post (10), card post (10) drives screw mandrel (2) and moves to the plate extreme position to the right when moving to right after, the screw thread that screw mandrel (2) is meshed with claw (1) is thrown off, at this moment, the radial slot of claw (1) in the disk body (3) can be moved on to desired location or claw (1) moved on to desired location or claw (1) taken out along the radial slot in the disk body (3) change anti-pawl (positive pawl) into from disk body (3).After above-mentioned action is finished, pull spanner again, drive eccentric shaft and rotate counterclockwise 180 °, card post (10) and screw mandrel (2) are all got back to original position, screw mandrel (2) meshes again with the threaded portion of claw (1), drives claw (1) with spanner rotary screw rod (2) and gets final product clamping work pieces.When eccentric shaft rotate counterclockwise 180 ° get back to original position after, spring (5) is to move on the jack-up stop pin (4), the taper pin of stop pin (4) promptly insert the seat (6) taper hole in, prevented the rotation of eccentric shaft (7).

Referring to Fig. 6, Fig. 7, Fig. 8, the card post driving shaft (7) of quick-clamping independent chuck is a gear shaft, mills to be shaped on tooth on card post (a 10) outer surface wherein, and the gear on the gear shaft is meshed with tooth on blocking post (10).When the needs claw moves big distance or need positive pawl (anti-pawl) to be changed to anti-pawl (positive pawl), the square toes of chuck handle are inserted stop pin (4) top square hole and pass through stop pin (4) dead spring (5), after its taper pin is thrown off from the taper hole of seat (6), rotating spanner also clockwise rotates certain angle by stop pin (4) driven gear axle, stirring card post (10) by the tooth on the card post (10) when gear shaft rotates moves to right, screw mandrel (2) also is shifted to the right to extreme position by card post (10) drive level, at this moment, the screw thread that screw mandrel (2) is meshed with claw (1) is thrown off, and claw (1) can be moved desired location along the radial slot in the disk body (3); Or claw (1) taken out from the radial slot of disk body (3) just changing (instead) pawl into.After above-mentioned action is finished, rotating spanner again, driving stop pin (4) and gear shaft rotates counterclockwise, card post (10) and screw mandrel (2) horizontal left are to the origin-location, screw mandrel (2) meshes again with the screw thread of claw (1), uses spanner rotary screw rod (2) to drive claw (1) again and gets final product clamping work pieces; After stop pin (4) rotated counterclockwise original position, spring (5) was to move on the jack-up stop pin (4), and its taper pin part is promptly inserted in the taper hole of seat (6), has prevented the rotation of gear shaft.

Claims

1, a kind of quick-clamping independent chuck, include claw (1), screw mandrel (2), disk body parts such as (3), it is characterized in that clamping has card post (10) on the shaft of screw mandrel (2), card post (10) merges by two half blocks and forms, by the fastening connection of countersunk head strand system bolt (9), in disk body (3), be provided with a cover card post driving mechanism, this mechanism is made up of stop pin (4), spring (5), seat (6), card post driving shaft (7), wherein block post driving shaft (7) and match with card post (10), card post driving shaft (7) is by bolt (8) axial location.

2, quick-clamping independent chuck according to claim 1, the upper and lower surface that it is characterized in that stop pin (4) all offers square opening, its top square opening is used for matching with chuck handle, its underpart square opening cooperates the location with card post driving shaft (7) top, be provided with spring (5) between stop pin (4) and card post driving shaft (7), stop pin (4) is located by taper pin taper hole fit system with seat (6).

3, quick-clamping independent chuck according to claim 1 and 2 is characterized in that card post driving shaft (7) is an eccentric shaft, and the elongated hole of offering on eccentric shaft and card post (10) matches and forms card post driving mechanism.

4, quick-clamping independent chuck according to claim 1 and 2, it is characterized in that card post driving shaft (7) is a gear shaft, wherein mill on one the outer surface at card post (10) and to be shaped on tooth, the gear on the gear shaft matches to form with tooth on the card post (10) and blocks the post driving mechanism.