JPS58181531A - Chucking device - Google Patents

Abstract

PURPOSE:To chuck a work as well as to aim at the promotion of shortening working hours, by installing a slide plug whose tip part has an engagement groove engaging a coupling pin and the rear end part is fitted into a clamper hole with some play, while rotating the slide plug a turn or so. CONSTITUTION:A body 11 of a chucking device has a chucking part 11a grasping a work, and a clamper 12 is rotatably pivoted to this body 11 by means of a hinge 13. The rear end of a slide plug 17 is fitted inside a hole 12b of the clamper 12 with some play and the tip part is slidably fitted into a fit hole 15b of a screw member 15. At the tip part of the slide plug 17, a hook-shaped engagement groove 18 to engage with a coupling pin 16 installed in the screw member 15 is formed up while at the other end, a head 19 for rotating the slide plug is installed. When this head 19 rotates, the member 15 moves forward as rotating together with a bush 14 in a screw motion, so that the work is chucked by pressure at checking parts 11a and 12a in conjunction with the body.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a round gripping device for gripping and clamping a workpiece or the like.

As a conventional gripping device for gripping and holding a workpiece, etc., for example, No. iv! There is something like the one shown in J. 1 is the main body of the gripping device, which has a gripping surface 1a for gripping the workpiece W;
The clamper is rotatably pivoted to the main body 1 by a hinge bin 3, and is provided with a gripping surface 2a that grips the workpiece W in cooperation with the gripping surface 1a of the main body 1.

Reference numeral 4 designates a clamp jig rotatably attached to the main body 1 via a hinge pin 5, and a nut 6 is screwed into the threaded portion 4a.

Now, loosen the nut 6 to near the end of the clamp rod 4 and open it by turning it in the direction of the arrow as shown by the two-dot line, while similarly turning the clamper 2 in the direction of the arrow to open it. state. After moving the workpiece W so that it faces the gripping surface 1a, the clamper 2 is rotated in the force direction of arrow B to clamp the workpiece W between the gripping surfaces 1a*2a, and then the clamp rod 4 is rotated in the direction of B. The nut 6 is moved to engage with the engaging portion 2b of the clamper 2 and is screwed into the threaded portion 4a.
By screwing in, the shirator W is clamped and held between the main body 1 and the clamper 2.

However, in such conventional gripping devices,
When removing the leak, the nut 6 is loosened and returned until the clamp rod 4 engaged with the engaging portion 2b of the clamper 2 can rotate around the hinge bin 5, and when mounting the workpiece Wf, the nut 6 is loosened and returned. The structure required that the loosened nut 6 be screwed in until the leak was compressed.
There was a problem in that the nut had to be turned many times when attaching and detaching the workpiece, which took time and caused fatigue for the operator.

The present invention has been made by focusing on such conventional problems, and includes a main body having a leakage gripping part and a screw hole, and a main body having a leakage gripping part and a screw hole, and a body that faces the workpiece gripping part or immerses in the gripping part and faces the screw hole. a clamper having a hole to fit into the screw hole; a screw member having a male thread on the outside to be screwed into the screw hole; and a screw member having a fitting hole and a coupling pin projecting from the fitting hole on the inside; By providing a gripping device comprising: a slide plug having an engagement groove at the leading end thereof that engages with the coupling bin, and a slide plug having a rear end loosely fitting into the hole of the clamper; The purpose is to solve the above problems.

The present invention will be explained below based on the drawings.

3 to 6 are diagrams showing an embodiment of the present invention. First, to explain the configuration, numeral 11 is the main body of the gripping device, which has a gripping part 11a for gripping a workpiece, and 12 is a clamper rotatably attached to the main body 11 by a hinge bin 13, which is connected to the gripping part 11a of the main body 11. A gripping portion 12a is provided which cooperates to grip the workpiece W. Reference numeral 14 denotes a bushing fitted and fixed to the main body 11, and has a screw hole 14a provided inside. In addition,
The screw hole 14m may be provided directly in the main body without using a bushing. Reference numeral 15 denotes a screw member which is screwed into the screw hole 14a of the bushing 14 through a male screw 15a provided on the outside, and is provided so that the coupling pin 16 projects inside the fitting hole 15b.

Reference numeral 17 denotes a slide plug whose rear end is loosely fitted into the hole 12b of the clamper 12 and whose tip is slidably fitted into the fitting hole 15M of the screw member 15; A key-shaped engagement groove 18 is cut into the slide plug to engage with a coupling pin 16 provided in the slide plug, and a head 19 is provided at the other end for rotating the slide plug by hand or with a spanner.

Reference numeral 20 denotes a retaining pin provided on the clamper 12 so as to slightly protrude into the hole 12b of the clamper 12, and the pin 20 engages with the stepped portion 17a of the slide plug so that the slide plug 1T is inserted into the hole 1.
It is designed so that it cannot be removed from 2b.

Next, the action will be explained and explained.

First, open the clamper 12 and slide the slide plug 17.
As the workpiece W is pulled out, the workpiece W is placed in front of the gripping part 11a of the main body 11, and then the workpiece W is pulled out from the position where the clamper 12 is opened.
Fig. 4 shows the shaped part rotated in the direction of clamping. At this time, the step portion 17a of the slide plug 17 is attached to the retaining pin 2.
0, and the tip end is connected to the fitting hole 1 of the screw member 15.
5b, and is in a position immediately before engagement.

Next, move the head 19 of the slide plug 17 to the arrow C in FIG.
When pushed in the direction shown in the figure, the slide plug 17 slides inside the fitting hole 15b of the screw member 15 while the engagement groove 18 engages with the coupling pin 16, but the lock-shaped engagement groove 18 When the coupling bottle 16 comes into contact with the corner 18a of the slide plug 17, the slide plug 17 cannot be pushed in any further.

Therefore, when the head 19 of the slide plug is rotated by hand or with a wrench in the direction of the arrow in the figure, the sixth
As shown in the figure, the terminal end 18b of the engagement groove 18 is connected to the coupling pin 16.
However, when the head 19 is further rotated in the same direction, the screw member 15 is threadedly engaged with the bush 14 via the coupling pin 16 and moves in the direction of arrow C in FIG. 6, so that the clamper 12 slides. As a result of being pushed in the C direction via the stepped portion 1Tb of the plug 1T, the workpiece W is gripped and compressed by the gripping portions 11a and 12a, respectively, in cooperation with the main body 1.

Further, the gripped workpiece W can be released by performing an operation opposite to that described above. That is, first, the head 19 is rotated in the opposite direction to the direction of the arrow to reverse the screw member 15 to release the tightening force, and the coupling pin 16 is inserted into the corner 18 of the engagement groove.
When aK contacts, pull the slide plug 1T in the direction opposite to arrow C to return to the state shown in FIG. 4, and then rotate the clamper 12 in the direction to open it.

As described above, according to the present invention, the structure includes: a main body having a work gripping portion and a screw hole; a clamper having a work gripping portion facing the work gripping portion and a hole facing the screw hole; a screw member having a male thread on the outside that is screwed into the screw hole and a fitting hole and a coupling pin protruding from the fitting hole on the inside; ? ff. The gripping device has an engagement groove that engages with the coupling bottle, and a slide plug whose rear end part fits loosely into the hole of the clamper,
The effect of gripping the workpiece can be obtained by rotating the slide plug around one rotation.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a conventional example, FIG. 2 is a partial view taken in the direction of the X arrow in FIG. It is an explanatory diagram of the action of this actual age example. 1, 11--Main body 11a, 12a--Work gripping part 12--Clamper 12b--Hole 14--Bushing 15-Threaded member 15a--Male thread 15b--Fitting hole 14&--Threaded hole 16-- Connection bottle 1T-・Slide plug 18~・Engagement groove Fig. 3 Fig. 4

Claims (1)

[Claims] A main body having a work gripping part and a screw hole, a clamper having a work gripping part facing the work gripping part and a hole facing the screw hole, and a male screw screwing into the screw hole on the outside and fitting inside. a screw member having a fitting hole and a coupling pin protruding from the fitting hole, and an engagement groove that engages with the coupling pin in the tip when the tip fits into the fitting hole; A gripping device comprising: a slide plug whose rear end portion loosely fits into the hole of the clamper.