JPH0645322Y2 - Constant pressure self copying surface polisher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a constant pressure self-copying surface polisher for polishing the mold surface of automobiles and other various industrial machines.

(Prior Art) Conventionally, in this type of self-copying surface polisher, the grindstone of the grindstone holder must be constantly kept in close contact with the work (workpiece) by constantly applying a constant pressure. I won't.

And as a surface polisher of this kind (horizontal direction), a slide table with a workpiece mounted on the upper surface that can be moved back and forth on the bed under control of the position detector, and along the arm (front-back direction) by the position detector control It is known that a sliding body that can move forward and backward and a polishing head that moves up and down along a guide member of the sliding body by the operation of a constant-pressure self-copy cylinder so that a grindstone polishes the work surface.

(Problems to be solved by the invention) However, in the surface polishing machine using such a constant pressure self-copying cylinder, if the height difference of the unevenness of the unevenness of the work (object to be polished) is particularly large, the constant pressure is applied without stopping. Although it is not possible to deal with uneven copying without increasing the stroke of the self-copying cylinder, increasing the cylinder stroke deteriorates the copying accuracy and lacks stability of action. Therefore, it has been necessary to use a complicated microcomputer or the like for digital control.

(Means for Solving Problems) The present invention has been made in order to solve the above problems, and is configured as follows.

The self-copying surface polishing machine of the present invention will be described in detail below with reference to the embodiments shown in the drawings. First, 3 is a sliding table having a work 32 mounted on an upper surface which can be moved back and forth on a bed 2 on a table frame 1. The slide base 3 is moved back and forth on the bed 2 by the drive cylinder 4 of the slide unit by the movement control for position confirmation by the position detector 5. Reference numeral 6 is a horizontal arm that can be moved up and down along the column 7 by a drive motor 8 at the upper end. The reference numeral 9 designates a sliding body which is moved forward and backward along the arm 6 by the drive cylinder 10 by the movement control for position confirmation by the position detector 11. Next 12
Is a polishing head which moves up and down along the guide member 21 of the sliding body 9 by the operation of the constant pressure self-copying cylinder 23 so that the grindstone 16 at the lower end polishes the surface of the work 32. The structure of FIG. 4 will be described in more detail with reference to FIGS. 4 and 5. First, the main body 13 is integrated with the rail 22.
Is engaged with the guide member 21 of the sliding body 9 and can move up and down. A constant-pressure self-copying cylinder 23 is integrally provided vertically on the guide member 21, and the lower end of the piston rod 25 of the piston 24 is connected to the main body 13. Therefore, the operation of the constant-pressure self-copying cylinder 13 causes the polishing head 12 to move. The main body 13 moves up and down along the guide member 21. And the main body
A grindstone shaft 17 having a grindstone 16 at its lower end is connected to a lower end of a main shaft 15 integrally wedged with a shaft of a hydraulic motor 14 provided on the upper part 13. In addition, in the figure, 18, 19 and 20 are bearings. Further, both position detectors 26a, 26, which are two limit switches for detecting the upper limit and the lower limit of the stroke of the constant pressure self-copying cylinder 13,
The upper head dog 27 and the lower dog 28, which are engaged with the slide member 9 or the guide member 21 which is integral with the slide member 9, are respectively provided on the polishing head 1.
2 are provided on the body 13 side, respectively. Therefore, in the present invention, the drive motor 8 is actuated by the commands of both the position detectors 26a and 26b to move the arm 6 up and down to respond to the unevenness of the work 32 in the vertical direction. Position detector
As 26a and 26b, in addition to the above-mentioned limit switches and dogs, those capable of non-contact position detection such as a differential transformer 29 shown in FIG. 7 can be appropriately selected and used. FIG. 8 shows a constant pressure self-imaging air circuit diagram, where 30 is a regulator and 31 is an air source.

(Effect of the Invention) In the surface polishing machine of the present invention, the horizontal position detector 5 detects the horizontal movement of the sliding base 3 having the work 32 mounted on the upper surface thereof on the bed 2.
(X-axis control), and the forward / backward movement of the slide body 9 along the arm 6 can be performed as contour control by the control by the front-back direction position detector 11 (Y-axis control). By the operation, the grindstone 16 of the polishing head 12 moves up and down to self-polish the surface of the work 32.
That is, it is possible to perform a complete surface processing by properly following the unevenness of the work 32.

In particular, the drive motor 8 is actuated by the commands of both position detectors 26a, 26b that detect the upper and lower strokes of the constant pressure self-copying cylinder 23 to move the arm 6 up and down to respond to unevenness in the vertical direction of the work. Therefore, even when the work unevenness exceeds the upper and lower limits of the stroke of the constant pressure self-copying cylinder 23, it is possible to rapidly respond to the unevenness in the vertical direction of the work and even if the unevenness of the work unevenness is exceptionally large. , It has an excellent effect that it is possible to always perform stable surface polishing with high copying accuracy without lengthening the cylinder stroke.

[Brief description of drawings]

The drawings show an embodiment of the self-copying surface polishing machine of the present invention. Fig. 1 is a front view, Fig. 2 is a left side view, Fig. 3 is a plan view, and Fig. 4 is an enlarged vertical sectional front view of essential parts. 5 is a plan view of the same, FIG. 6 is an explanatory view of a stroke limit position detector of a constant pressure self-copying cylinder, and FIG. 7 is an explanatory view of another embodiment of the same.
FIG. 8 is a constant pressure self-copying air circuit diagram. 1 ... Stand frame, 2 ... Bed, 3 ... Sliding base, 4 ...
… Drive cylinder, 5… Position detector, 6… Arm,
7 ... Column, 8 ... Drive motor, 9 ... Sliding body, 10
...... Drive cylinder, 11 …… Position detector, 12 …… Polishing head, 13 …… Main body, 14 …… Hydraulic motor, 15 …… Spindle,
16 …… Whetstone, 17 …… Whetstone spindle, 18,19,20 …… Bearing, 21 ……
Guide member, 22 ... Rail, 23 ... Constant pressure self-copy cylinder, 24 ... Piston, 25 ... Piston rod, 26a, 26b
…… Position detector, 27,28 …… Dog, 29 …… Differential transformer, 30 …… Regulator, 31 …… Air source, 32 …… Work,

Claims (1)

[Scope of utility model registration request] 1. A slide base 3 having a work 32 mounted on an upper surface which can be moved back and forth on a bed 2 under the control of a position detector 5.
By the horizontal arm 6 that can be moved up and down along the column 7 by the drive motor 8 on the upper end, the slide body 9 that can be moved back and forth along the arm 6 by the control of the position detector 11, and the constant pressure self-copy cylinder 23. A polishing head 12 that moves up and down along a guide member 21 of the sliding body 9 and a grindstone 16 at the lower end polishes the surface of the work 32, and both position detectors that detect the upper and lower stroke limits of the constant pressure self-copying cylinder 23. A constant-pressure self-copying surface polishing machine, characterized in that the drive motor 8 is actuated in response to a command from both position detectors to move the arm 6 up and down to respond to unevenness in the vertical direction of the work.