JPH0325893Y2 - - Google Patents

Description

[Detailed description of the invention] (A) Field of industrial use This invention relates to positioning in arc machining using a circular table of a machine tool milling machine.

(B) Conventional technology Conventionally, when a non-automatically controlled milling machine is used to process a right-angled hexahedron, which is often seen in molds, in a circular arc, a circular table is mounted on the milling machine table, and a processing center or circular arc is processed on the milling machine table. It is necessary to place a workpiece with a scribed line on it and move the workpiece to a position where the operation of the rotary table and the scribe line coincide with each other. In this case, it was not easy to visually check the marking lines to match the vertical and horizontal directions with the operation of the rotary table.

(C) Problems that this project aims to solve In order to solve these problems, this project aims to determine where on the rotary table the perpendicular surface of the workpiece should be mounted so that the machining marking line and the operation of the rotary table coincide. In order to obtain numerical values and hold a right-angle receiving ruler that guides the right-angled surface, a shank part similar to a cutting tool is installed vertically on the square ruler, and it is attached to the main shaft of the milling machine via a milling chuck. This is an attempt to determine the contact position of the workpiece, and the milling spindle transfers the numerical value from the center point of the workpiece's arc to the right-angled surface to be contacted from the rotary table operating center using the digital display value. Attach the proposed positioning tool to the main shaft of the milling machine using a milling chuck, fix it with a main shaft brake, etc., so that the operation of the milling machine table and the right-angle receiver are parallel to each other. By positioning a ruler and attaching the right-angled surface of the workpiece to the ruler, circular arc machining can be performed using digitally displayed numerical values.

(D) Structure of the device The proposed positioning tool can be explained using drawings as follows.
The extension of the intersection line 0 of the right angle receiving ruler 2 and 3 where the right angle (90 degree) surface of the workpiece is to be applied is the shank part 1 held by the milling chuck vertically installed at the top. It is formed so as to be aligned with the center line of the shaft, and 4 is a parallel bar, 5 is a parallel surface using a dial gauge, and 6 is a surface that comes into contact with a milling machine table groove or the like to make parallel. 7 is a tightening bolt, b in the action diagram is the intersection line of the right angle surface of the workpiece, and a is the machining arc center, which is attached to the operating center of the rotary table.

(E) Effects of the present invention By using the positioning tool of this invention, it is possible to attach the workpiece to the positioning tool without having to draw an arcuate marking line on the workpiece or visually align the marking line with the movement of the rotary table. The rotary table scale can be installed accurately without changing, and the required arc machining can be performed using digitally displayed values.

[Brief explanation of the drawing]

FIG. 1 is a front view of the present invention, FIG. 2 is a bottom view of the present invention, and FIG. 3 is an operational view of the present invention. 1...Shank part, 2, 3...Right angle receiving ruler surface,
0...Intersection line, 4...Parallel bar, 5...Parallel plane,
6... Parallel abutting surface, 7... Tightening bolt, a
...Machining center, b...Intersection line of the right angle surface of the workpiece.

Claims (1)

[Scope of utility model registration request] A circular table work in which right angle (90 degree) receiving rulers 2 and 3 are formed at the lower end of the shank part 1, and the extension of the intersection line 0 of the right angle receiving surfaces becomes the axis center line of the shank part 1. positioning tool.