JPH0539888U - Claw of checking device for disk wheel - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a claw of a chucking device capable of gripping a disc wheel having various hub hole diameters without replacing parts. [Structure] Having a plurality of grips formed by forming steps,
It is a claw of a chucking device for a disc wheel in which a protrusion is formed at the lower end of each grip.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement in a device for chucking a hub hole of a disc wheel for an automobile and carrying it.

[0002]

[Prior Art]

 Conventionally, as one of the means for transporting the disc wheel, there is a method of gripping the hub hole of the disc with a chucking device provided in a robot or other transport device and sending it. Is often used when there is. The chucking device used in the above-mentioned transfer method is to open and close a substantially cylindrical chuck divided into three or more pieces into an open state larger than the hub hole diameter of the disk and a closed state smaller than the hub hole diameter. Then, the hub hole was grasped and released.

[0003]

[Problems to be solved by the device]

 Disc wheels have different hub hole diameters to suit the shape of the mounting part on the automobile side. Therefore, if the type of disc wheel being transported changes to one with a significantly different hub hole diameter, the chuck of the chucking device should be replaced with one that matches the hub hole diameter in the line where the above-mentioned transfer is performed. There was a need.

As a result of the above, there is a problem in that complicated chuck replacement work must be frequently performed in the present day when the tendency of high-mix low-volume production is remarkable. Moreover, since it is necessary to provide a large number of chucks adapted to various hub hole diameters, the cost of parts is high and the management is troublesome. The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to be able to grip disc wheels having various hub hole diameters without replacing parts. It is to provide a claw for a chucking device.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the claw of the chucking device for a disk wheel of the present invention has a plurality of grips formed by forming steps, and a projection is formed at the lower end of each grip.

[0006]

[Action]

 The plurality of gripping portions provided with the steps form different radial portions when a plurality of claws are arranged. Therefore, a disc wheel with a large hub hole diameter can be gripped by a large diameter portion, and a disc wheel with a small hub hole diameter can be gripped by a small diameter portion. In addition, the protrusion formed on the lower end of each holding portion prevents the disc wheel from falling during transportation.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a chucking cylinder B of a chucking device A having an operation stroke of 40 mm in diameter has a slide portion C on its lower surface. Since the structure of the chucking device itself is well known, its explanation is omitted.

The claw 1 attached to the slide portion C with a bolt D has a first grip portion 3 and a first protrusion 4 which are continuous with a substantially U-shaped mounting portion 2 and are further stepped to form a second grip. The portion 5 and the second protrusion 6 are formed. Note that, as shown in FIG. 2, three claws 1 are attached at three circumferentially equidistant positions, but only one of them is shown in FIG.

Insert members 7 and 8 are embedded in the first grip portion 3 and the second grip portion 5, respectively, in a slightly protruding state and screwed. The insert members 7 and 8 are the parts that come into direct contact with the disc wheel, and are made of hardened steel so that they will not wear out even if they are contacted many times, but they should be made of resin so as not to damage the disc wheel. It can also be replaced if it wears out after a long period of use.

With the pawl 1 configured as described above, in the closed state, the front surface of the insert member 7 is on a circle having a diameter of 74 mm (E dimension in the figure), and the front surface of the insert member 8 is a circle having a diameter of 46 mm. It is on the circumference (F dimension in the figure). Therefore, in the opened state with a stroke of 40 mm in diameter, the front surfaces of both insert members 7 and 8 are located on the circumferences of 114 mm and 86 mm in diameter, respectively. The protrusions 4 and 6 project 2 mm from the insert members 7 and 8. That is, in the above structure, it is possible to grip the disc wheel G having a hub hole diameter of 78 mm to 114 mm with the first grip portion 3 and the disc wheel H having a hub hole diameter of 50 mm to 86 mm with the second grip portion 5. is there.

Further, during transportation, the protrusions 4 and 6 prevent the disc wheel from falling. The dimensions of each part of the claw are not limited to those in the above embodiment, and may be appropriately determined according to the hub hole diameter of the disc wheel to be gripped, and the grip part may be formed in three stages or more. It is also possible to widen the range of hub hole diameter that can be gripped by adopting a chucking device with a large stroke.

[0012]

[Effect of the device]

 Since the claw of the chucking device of the present invention has the above-mentioned configuration, the disc wheel having various hub hole diameters can be transported without replacing parts. As a result, the productivity is greatly improved and the cost of parts can be reduced, which is an excellent practical effect.

[Brief description of drawings]

FIG. 1 is a side view showing a state where a claw of the present invention is attached to a chucking device.

FIG. 2 is a bottom view of a claw.

[Explanation of Codes] 1 Claw 2 Mounting part 3 First gripping part 4 Projection part 5 Second gripping part 6 Projection part 7 Insert member 8 Insert member

Claims (1)

[Scope of utility model registration request] 1. A claw of a chucking device for a disc wheel, which has a plurality of grips formed with steps and has a protrusion formed at the lower end of each grip.