JPH05318264A - Work holder of automatic setting/removing type - Google Patents

Abstract

PURPOSE:To shorten the work replacement time and shorten the cycle time of the line by furnishing a clamp rod which clamps a joint through a collet coaxial with the joint. CONSTITUTION:When a pull stud bolt 1 is pushed, a pulling head 2 or a chuck drover appearing in different types are pushed through a clamp rod 5 and a joint 4 to generate the unclamped state. A work W qs mounted in an automatic holder 3- and in the case of a pin chuck, the pin is inserted in the condition being identical with a pin hole 1 in the work, and in the case of any other type of chuck, the push of pull stud bolt 11 is, in that condition, released to cause the pulling head or chuck drover 2 to be pushed in the direction of clamp rod 5 by the joint 4, which is pushed by a spring 8, and the clamped state is generated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for machining and a production method using the jig.

[0002]

2. Description of the Related Art In the conventional automatic work exchange system, since the work is directly exchanged in each machine, it takes time to remove the work from the mounting portion, clamp the work, center the work, and unclamp the work. However, the machine must be stopped during that time, and there has been a problem that the operating rate of the machine cannot be increased.

[0003]

SUMMARY OF THE INVENTION In order to increase the operation rate of a machine, the present invention automatically attaches and detaches a work piece to and from a holder outside the machine to remove a machined work piece holder and a non-machined work piece holder. It is an object of the present invention to provide a method for setting a machined position of a machine in a short time by replacing it in a short time.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a main body of a work holder that can be positioned by being inserted into a predetermined position to be centered, screwed into a chuck drawbar incorporated in a main body of a work holder, and pressed by a spring, the main body. This is a workpiece automatic attachment / detachment holder consisting of a joint that moves back and forth in the axial direction of, and a clamp rod that clamps the joint via a collet that is coaxial with the joint. This is a production method that efficiently processes multiple types of workpieces simply by exchanging them outside the machine.

[0005]

The operation of the present invention will be described below with reference to the drawings. When the pull stud bolt 11 is pushed, the pulling head 2 or various chuck drawbars are pushed through the clamp rod 5 and the joint 4 to be in an unclamped state, and the workpiece W is automatically detachable from the holder (hereinafter referred to as a holder) 3
In the case of a pin chuck, insert the pin in the state matching the pin hole 1 of the workpiece, and in the case of other types of chucks, release the push of the pull stud bolt in that state, The various chuck drawbars 2 are pushed toward the clamp rod 5 by the joint 4 pushed by the spring 8 and are in a clamped state. In this state, the work changer sets the machine, and when the pull stud bolt is pulled, the clamp rod 5 is pulled and the joint 4 is clamped through the collet 9, so that high clamp rigidity is obtained. The holder main body 3 can be centered and positioned by only inserting it into a predetermined position so that the work can be centered and positioned by a taper such as a taper shank.

The clamp is a joint 4 from a toy 6 with a spring 8
It is achieved by simply pulling on the chuck drawbar by pressing. As the spring, various types such as a flat spring and a spring spring can be used. Then, by clamping the joint 4 by the clamp rod 5 via the collet 9 as described above, the clamp rigidity of the work can be further enhanced. The collet portion and the collar portion may be integrated with the holder body, but may be separated for the purpose of facilitating the work. The chuck drawbar is shown in FIG. 1 as an example of a pulling head. In this case, the work is fixed to the toy 6 by the pin 1. FIG. 2 is an example of a three-jaw chuck, and the work is fixed by three claws 12. FIG. 3 shows an example in which a commonly used collet chuck is mounted.
As described above, various types of chuck drawbars can be used, and the chuck drawbars are fixed to the joint by aligning the cores by means such as screwing. When the setup is changed, the jig is completely replaced by the automatic replacement of the work holder. It is also possible to complete a series of machining such as cutting and polishing with the work mounted on the work holder. In this case, operations such as centering the work one by one, clamping and unclamping are not required. . Collet 13, chuck 14, yatoi 6
By creating holders with different sizes and shapes, it is possible to handle many types of workpieces, and it is possible to easily handle mixed flow production simply by exchanging the holders outside the machine.

[0007]

According to the present invention, since the work exchange time is shortened, the line cycle time can be shortened. High clamp rigidity can be obtained because it is not clamped only by spring force. In addition, since the clamp jig is set in the work holder, when the setup is changed, the attachment jig can be exchanged only by automatically exchanging the work holder, so that the setup exchange time can be shortened.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of an embodiment of the present invention in which a pull head is attached to a chuck draw bar.

FIG. 2 is a partially cut side view of an embodiment of the present invention in which a three-jaw chuck is attached to a chuck draw bar.

FIG. 3 is a partially cut side view of an embodiment of the present invention in which a collet chuck is attached to a chuck draw bar.

[Explanation of symbols]

 1 Pin Hole 2 Pull Head or Various Chuck Drawbars 3 Work Automatic Detachable Holder 4 Joint 5 Clamp Rod 6 Jatoy 7 Coil Spring 8 Collar Spring 9 Collet 10 Fitting Surface 11 Pull Stud Bolt 12 Whirl Stop 13 Claw or Collet 14 Chuck Body W Work

Claims (2)

[Claims] 1. A joint which is inserted into a predetermined position to be centered, screwed into a chuck drawbar incorporated in a main body of a work holder capable of positioning, pressed by a spring, and moved back and forth in the axial direction of the main body. And a workpiece automatic detachable holder consisting of a clamp rod that clamps the joint through a collet coaxial with the joint. 2. A method for producing a work, in which a plurality of types of the work automatic attachment / detachment holders according to claim 1 are prepared, and the plurality of types of works are efficiently processed only by exchanging the holders outside the machine.