JPH0537455U - Polishing tool - Google Patents

Abstract

(57) [Summary] [Purpose] To enable good polishing even with minute irregularities. [Structure] An exchange-type polishing tool is provided with a pressing means for pressing a grindstone to a surface to be polished at a predetermined pressure.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a polishing tool used for polishing stone materials and the like.

[0002]

[Prior Art]

 2. Description of the Related Art There is a tool exchange type surface polishing machine for polishing stones that has an air cylinder on the main shaft to apply pressure to the polishing tool.

[0003]

[Problems to be solved by the device]

 However, the above-mentioned conventional surface polisher has a problem in that the structure is complicated because the air cylinder is attached to the main shaft, and only surface polishing can be performed. Therefore, an object of the present invention is to provide a polishing tool which has a simpler structure and can have a processing function other than the surface polishing.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention employs the following configurations. That is, a polishing tool according to the present invention includes a shank that is detachably attached to a spindle head of a polishing device, a grindstone attached to a tip end of a shaft that is slidably fitted in the shank in an axial direction, And a pressurizing means which is interposed between the grindstone and the shank and pressurizes the grindstone with a predetermined pressure in a direction of protruding from the shank.

[0005]

[Action]

 The shaft of the grindstone is slidably fitted to the shank and is pressed by a pressing means such as a spring in the protruding direction of the grindstone. The work surface is pressed with a substantially constant pressure, and good processing can be performed.

[0006]

【Example】

 Hereinafter, embodiments shown in the drawings will be described. FIG. 1 shows an embodiment of the present invention. A polishing tool 1 is composed of a taper shank 2 attached to a spindle head of a polishing machine and a grindstone unit 3. The shank 2 includes a taper portion 4 that fits into a spindle head, and a tubular portion 5 having a hollow portion 6 formed in a core portion, and an elongated hole penetrating in a diametrical direction in an intermediate portion of the tubular portion. 7 is drilled.

In the grindstone unit 3, a flange 11 is provided at the tip of a grindstone shaft 10 that slidably fits into the hollow portion 6 of the shank, and a substrate 15 that holds a ring-shaped grindstone 13 is attached to the flange 11. It is installed. A diametrical pin hole 16 is provided at an intermediate portion of the grindstone shaft 10, and a pin 17 slidably fitted into the elongated holes 7, 7 of the shank is inserted into the pin hole. Further, a spring 20 is interposed between the front end surface of the shank 2 and the flange 11 of the grindstone unit 3 as a pressurizing means for pressing the flange forward, that is, in the direction in which the grindstone projects. The pressurizing means is not limited to the spring as in the present embodiment, but other suitable pressurizing means such as an air cylinder can be adopted.

This polishing tool 1 is used by attaching a taper shank 2 to a spindle head of a polishing machine. When the grindstone is rotated and brought into contact with the work surface, the surface is ground. However, this grinding tool presses the grindstone against the work surface at a constant pressure by the action of the spring 20, so that the work surface is processed. Even if there are some irregularities, it is possible to maintain a good working condition. The polishing tool can be used not only for polishing but also for grinding. The strength of the pressing force of the pressurizing means may be selected optimally depending on the material of the work, the kind of the grindstone, the processing conditions and the like.

Next, FIG. 3 shows an embodiment different from the above. This polishing tool 1'is provided with a plurality of recesses 30 for supporting springs on the outer peripheral portion of the cylindrical portion of the shank 2 '. Spring 31 as a pressing means for pressing the flange 3 is fitted in the recess. The other parts are almost the same as in the above example, and the same parts are denoted by the same reference numerals.

[0010]

As is apparent from the above description, the polishing tool according to the present invention is provided with a pressing means for pressing the grindstone with a predetermined pressure on the tool itself, so that constant pressure processing can be performed structurally easily. It has become practical and convenient, for example, it is possible to immediately shift to the polishing step after the shape processing.

[0011]

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the present invention.

FIG. 2 is a partial plan view thereof.

FIG. 3 is a vertical sectional view of a different embodiment.

[Explanation of symbols]

 1 polishing tool 2 shank 3 grindstone unit 13 grindstone 20 spring (pressurizing means)

Claims (1)

[Scope of utility model registration request] 1. A shank that is removable from a spindle head of a polishing apparatus, a grindstone attached to the tip of a shaft that is slidably fitted in the shank in the axial direction, and between the grindstone and the shank. And a pressing means which presses the grindstone with a predetermined pressure in a direction of protruding from the shank.