JP2603596Y2 - Surface grinder - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface grinder.

[0002]

2. Description of the Related Art A surface grinder that controls pitch feed by position can make the surface roughness of a ground surface uniform.

[0003]

[Problems to be solved by the invention] However, a pattern in the width direction of the grinding wheel, so-called pitch, occurs on the surface of the grinding surface.
The appearance of the ground surface was sometimes impaired. ◆ An object of the present invention is to solve the above-mentioned problems and to provide a surface grinding machine in which a pitch is hardly generated.

[0004]

Means for solving the above problems are as follows: feed pitch designation means; feed control means for relatively moving a grindstone and a work at a designated feed pitch; work height designation means; A value of 70 to 100% is randomly generated in a surface grinding machine having a cutting depth designating means and a movement control means for moving a grindstone at a designated machining height at a designated cutting depth. When a plurality of cuts are made by providing a random value generating means and a cut depth determining means, the problem can be solved by setting the feed pitch at the last cut to random feed.

[0005]

[Function] Since the feed pitch at the time of the last cutting is made random, the pitch is hardly generated.

[0006]

1 is a block diagram of a surface grinder according to the present invention.
FIG. 2 shows a part of the control panel. In the figure, reference numeral 1 denotes a column which is movable on the base 2 in the X direction. Reference numeral 3 denotes a spindle head, which is movable on the column 1 in the Z direction. 4 is a whetstone. 5 is a table, Y on the base 2
It is movable in any direction. Reference numeral 6 denotes a work placed on the table 5. Reference numeral 7 denotes a control device for controlling the feed of the column 1, the spindle head 3 and the table 5. The control device 7 is provided with random value generating means for randomly generating a value of 70 to 100%. 8 is a control panel, and 9 is a select switch for specifying a feed pitch. 10 is a dial type setting device for setting the processing height. 11 is a dial type setting device for setting the cutting depth. Reference numeral 12 denotes a changeover switch for switching between random feed and normal feed. The other setting devices are not shown.

The operation will be described below, taking as an example the case where the upper surface of the work 6 is ground. The processing height is T mm from the surface and the depth of one cut is t mm. Also,
The feed pitch is P, and the grindstone 4 is moved by W larger than the width w of the work 6. Further, it is assumed that the processing is started from the inner side of the work 6 (the side closer to the column 1). ◆ A: When normal feed is selected by the changeover switch 12 ◆ The same machining operation as the conventional one is performed. That is, the grinding stone 4 is cut by tmm from the surface of the work 6 (for example, 0.1 mm).
T) The column 1 is moved by the pitch P each time the table 5 moves once in the Y direction from one specified moving end to the other moving end. Then, the moving amount of the column 1 is W
, The cutting depth is cut again by tmm, and processing is performed from the near side to the far side. Hereinafter, the above operation is repeated until the specified machining height is reached. ◆ B: When random feed is selected by the changeover switch 12 ◆ 0 to 0.9T: The controller 7 has a machining height of 0 to 0.9T.
Processing is performed in the same manner as before. And when it reaches 0.9T, it moves to. ◆ 0.9 to 1T: Every time the table 5 moves once in the Y direction, the control device 7 moves the column 1 by the pitch RP. Here, R is a random value generated by the random value generating means. In the present embodiment, the random feed is performed at a boundary of 0.9T, but it is needless to say that this value may be arbitrarily determined. Alternatively, random feed may be performed by the number of cuts instead of the cut height.

[0008]

[Effects of the Invention] As described above, according to the present invention,
Since the feed pitch at the time of the last cut is made random, almost no pitch is generated. In addition, since not all the work steps are sent randomly, there is an effect that the work efficiency does not decrease so much.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a surface grinding machine according to the present invention.

FIG. 2 is a diagram showing a part of a control panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Column 3 Spindle head 4 Whetstone 5 Table 6 Work 7 Control device 9 Select switch 10, 11 Setting device 12 Changeover switch

Claims (1)

(57) [Scope of request for utility model registration] A feed pitch designating means, a feed control means for relatively moving the grindstone and the work at the designated feed pitch, a working height designating means, a cutting depth designating means, In a surface grinding machine provided with a movement control means for moving a grindstone at a specified machining height at a specified cutting depth, a random value generating means for randomly generating a value of 70 to 100% and a cutting depth provided with a judgment means, a plurality of times of switching
A surface grinding machine characterized in that a feed pitch at the time of a final cut is set to be random feed when making a cut.