JPS6039506B2 - Workpiece surface finishing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to an apparatus used for processing a mold that has been profiled using an NC die-sinking machine or the like as a workpiece, and then finishing the workpiece using a sander.

Conventionally, this type of finishing process has generally been carried out manually using a sander or the like, which has the disadvantages of being labor-intensive and expensive.

The object of the present invention is to obtain a device that automatically performs the finishing process described above, and uses a sanding wheel made by electrodepositing hard, low-grain particles on the surface of a thin steel plate or other elastic metal plate. ,
A portion of the circumferential surface of the workpiece is brought into pressure contact with the upper surface of the workpiece at an angle so as to give rotation and feed to the workpiece, and a pair of left and right detection elements facing the upper surface of the workpiece is provided to detect both elements. When one or the other is activated, the grindstone is given a corresponding horizontal movement, and when both are activated, a corresponding vertical movement is given.

An example of implementing the present invention will be explained with reference to the attached drawings.

In the drawings, reference numeral 1 denotes a spindle head of a vertical boring machine or the like, and although the head 1 is not shown, it is equipped with a known feeding means so as to be able to appropriately feed it in the vertical direction and the longitudinal and lateral directions. In the drawing, 2 indicates the connection of the lower surface of the head 1, and a thin steel plate or other elastic metal plate 3a is attached to the lower surface of the machine base 2.
A processing head 5 having a sander whetstone 3 formed by exposing abrasive grains 3b on the plate surface thereof and its driving source 4 on the lower and upper surfaces thereof is provided so as to be movable vertically as well as horizontally. To explain this in more detail, the head 5 is pivotally supported by a shaft 7 extending rearward and downward from a support frame 6 on the front surface thereof, and a pair of left and right telescopic leg pieces 8 extending upward from the support frame 6; The shaft 7 is connected to the machine base 2 through a shaft 7, and the shaft 7 allows horizontal movement of the forehead, and the leg pieces 8, 8 allow vertical movement. A pair of left and right hydraulic cylinders 9, 9 are provided between the two cylinders 9, 9, so that when one or the other of the two cylinders 9, 9 is actuated, the left and right movements are caused, and when both of the cylinders are actuated, the left and right movements are caused. I made it possible to give vertical movement to this. The whetstone 3 is supported on the head 5 by a central shaft 3c, and is connected to the drive source 4 to give it rotation. It is assumed that the working surface faces the upper surface b of the workpiece a to be machined at a more or less diagonal angle, and therefore, according to the underlay, part 3d of the circumferential surface is elastically deformed as shown in the figure. It was arranged to be in elastic pressure contact with the upper surface b.

Furthermore, according to the present invention, a pair of left and right detection elements 10, 1 are provided on the upper side of the portion 3d, facing the portion 3d with a predetermined distance d therebetween.
0 is fixedly provided on the head 5, and each element 10 is composed of, for example, an air sensor using pneumatic pressure, and the above-mentioned interval d is
According to this change, the air pressure changes and this is extracted as an electrical signal. This electric signal acts on each control valve 11, 11 in each of the above-mentioned hydraulic cylinders 9, 9 to control the operation of each cylinder 9, 9, and thus the part 3d is always connected to each element 10, 10. A predetermined distance d was maintained, in other words, the portion 3d was always maintained at a predetermined contact pressure with the upper surface b.

To explain this in more detail, when one or the other of the two elements 10, 10 detects a variation in the above-mentioned interval d, one or the other of the two cylinders 9, 9 is actuated by the electric signal generated thereby. The grinding wheel 3 is moved to one side or the other, and thus the distance d is returned to the originally planned value, but it is further increased by 10,1
When both cylinders 0 detect the fluctuation, both cylinders 9 and 9 are operated to move the grinding wheel 3 up and down, and the interval d returns to the originally planned value, and this is automatically repeated. To explain its operation, for example, as shown in the first diagram, the grinding wheel 3 is inclined to the upper surface b of the workpiece a and is in direct contact with the upper surface b of the workpiece at a portion 3d thereof, and is given rotation and feeding to the upper surface b of the workpiece a. The upper surface b is subjected to a grinding type finishing process using the grindstone 3, but during such operation, if the workpiece a is, for example, a mold, the upper surface b forms an appropriately curved uneven surface. ,
The grindstone 3 always follows this uneven surface.

That is, when the grinding wheel 3 is fed forward, when the part 3d reaches a place where the upper surface b is formed by an irregular slope such as upward to the right or upward to the left, the part 3d tilts accordingly, and the above-mentioned The above-mentioned interval d changes in one or the other of both elements 10, 10, and this is detected, and accordingly, both cylinders 9, 9
One or the other operates correspondingly, and the grinding wheel 3, and thus the part 3d, is warped and follows the warp of the upper surface b. Further, when the portion 3d reaches a point where the upper surface b is an upward slope or a downward slope, the portion 3d is moved upward or downward, and accordingly both elements 10, 10 are operated together. cylinder 9,
9, and thus the grindstone 3 moves up or down to follow it. Thus, the portion 3d of the grindstone 3 always follows the appropriate curvature of the upper surface b and always acts on the upper surface b with a predetermined contact pressure to give it a uniform finish. In this way, according to the present invention, the sanding wheel and part of the storm surface are brought into elastic pressure contact with the upper surface of the workpiece to give rotation and feed to the workpiece, and when the curvature of the upper surface changes, the left and right foreheads are applied to the workpiece. The grindstone gives a vertical motion and follows it, and thus the grindstone always maintains a predetermined contact pressure and can obtain a uniform finish on the upper surface.For example, it can be applied to molds to reduce the cost of a single bottle. It has the following effects.

[Brief explanation of the drawing]

FIG. 1 is a side view of one example of the device of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a sectional view taken along line mm, and FIG. 4 is a plan view of a portion thereof. 3...Sanding stone, a...Work, b...Top surface, 3d.
... some, 10, 10... detection element. Figure 3 Figure 4 Figure 1 Figure 2

Claims (1)

[Claims] 1. A sanding wheel made by electrodepositing hard abrasive grains on the surface of a thin steel plate or other elastic metal plate is tilted to the upper surface of the workpiece and pressed against a part of the circumference to impart rotation and feed to the workpiece. A pair of left and right detection elements are provided on the upper side of the part, and when one or the other of the elements is actuated, the grinding wheel is tilted to the left or right, and when both of the elements are actuated, the grindstone is tilted to the left or right. A surface finishing device for a workpiece, which is configured to provide a vertical movement corresponding to the vertical movement.