JPS63300848A - Grinding working machine - Google Patents

Abstract

PURPOSE:To work the step difference plane and starting-up surface of a workpiece having a step difference with high accuracy by providing each feeding mechanism in the axial direction onto one among a work arranged in parallel to a revolution shaft and a spindle for grinding and in the direction perpendicular to the shaft onto the other and alternately operating the both mechanisms. CONSTITUTION:A work spindle 3 and a grinding spindle 6 are shifted relatively in the X and Y directions. Therefore, the relative position of the workpiece 1 and a grindstone rate 5 can be set arbitrarily. Therefore, the workpiece 1 having the step difference of a cylindrical surface is installed onto a chuck 2 so that the revolution center of the cylindrical surface becomes concentric to the revolution center of the spindle 3, and the grinding spindle 6 is shifted in the vertical direction to the revolution shaft, and then grinding is performed by feeding the grinding spindle 6 in the axial direction and the direction perpendicular to the shaft, and the step difference plane and the starting-up cylindrical surface of the workpiece 1 having the step difference can be ground. Further, since the accuracy of the worked shape on the step difference plane is influenced only by each guide accuracy of two shafts in the X and Y directions, the accuracy can be improved drastically.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a polishing machine for grinding highly brittle materials.

(Prior art) Regarding this type of conventional polishing machine, Figs. 5 and 6 show
This will be explained using figures.

In FIG. 5, the conventional polishing machine has a work spindle 3 equipped with a chuck 2 to which a workpiece 1 is attached, a headstock 4 movable in the axial direction, and a grinding spindle 6 to which a grinding wheel 5 is attached. A grindstone head 7 having the same center height and parallel rotation axes are mounted on a base 8 at a distance A shown by the dimension line in the figure.

The operation of the polishing machine having such a configuration will be explained.

First, attach the grinding wheel 5 suitable for machining to the grinding spindle 6.Next, attach the workpiece 1 to the chuck 2 of the work spindle 3, then turn on the power and turn on the grinding spindle 6 and work spindle 3. Rotate. next,
When the headstock 4 is moved in the direction of the grinding spindle 6 by the drive device and the workpiece 1 is pressed against the end face of the grinding wheel 5,
The surface of the workpiece is ground.

In FIG. 6, in another conventional grinding machine, a workpiece 1 is mounted on the upper surface and is slidably mounted on a guide table 9 so as to reciprocate in a direction perpendicular to the rotation axis of a grinding spindle 6. A grindstone table IO and a grindstone head 7 having a drive device for feeding the grinding spindle 6 in the rotational axis direction and in the vertical direction are fixed on a base 8.

The operation of the polishing machine having such a configuration will be explained.

First, the grinding wheel 5 suitable for processing is attached to the grinding spindle 6. Next, the jig 11 to be attached to the workpiece 1 is fixed to the surface of the table 10, and the workpiece 1 is attached to this. After determining the reciprocating stroke and speed of lO and inputting them and turning on the power, the table 1 above is displayed.
0 begins to reciprocate back and forth, and the grinding spindle 6 rotates. Next, when the grinding spindle 6 is advanced by the driving device of the grindstone head 7 and the end face of the grinding wheel 5 is pressed against the workpiece 1, the surface of the workpiece 1 is ground.

(Problems to be Solved by the Invention) However, in the conventional example shown in FIG. There was a problem in that it was not possible to grind the stepped plane of a certain workpiece.

In addition, in the conventional example shown in FIG. 6, although it is possible to grind the workpiece 1 having a step, the guiding accuracy in the three axes of the table 10 guide table 9 in the front-rear direction, the grindstone head 7 in the up-down direction, and the left-right direction is poor. However, since this affects the flatness of the workpiece, there is a problem in that it is difficult to improve the shape accuracy.

The present invention solves the above-mentioned problems, and provides a polishing machine that can process the step plane and rising surface of a workpiece with steps to any desired width and with excellent shape accuracy.

(Means for Solving the Problems) In order to solve the above problems, the present invention arranges the work spindle and the grinding spindle so that their rotational axes are parallel to each other, and attaches an axial direction to one of the spindles. , the other spindle is provided with a feed mechanism in the direction perpendicular to the axis and the feed mechanisms are actuated alternately, or either one of the spindles is provided with a feed mechanism in the axial direction and the feed mechanism in the direction perpendicular to the axis and the feed mechanisms are actuated alternately. It is something that makes you

(Function) The above configuration allows the work spindle and the grinding spindle to move relative to each other in the X and Y directions.

The relative position between the workpiece and the grinding wheel can be set arbitrarily.

For workpieces with steps on the cylindrical surface, if you attach the workpiece to the chuck so that the center of rotation of the cylindrical surface is concentric with the center of rotation of the workpiece spindle, after moving the grinding spindle in the direction perpendicular to the rotation axis, By feeding and grinding in a direction perpendicular to the step, the step plane and the rising cylindrical surface of the workpiece can be ground.

In addition, the accuracy of the machined shape of the step plane is only affected by the guidance accuracy of the two axes in the X and Y directions, so the accuracy is greatly improved.

(Example) An example of the present invention will be described with reference to FIGS. 1 to 4.

FIG. 1 is a perspective view showing the structure of a polishing machine according to the present invention, and the same components as in the conventional example will be described with the same symbols as in the conventional example.

In the same figure, the polishing machine according to the present invention is provided with guides 12 and 13 having guide surfaces in both X and Y directions indicated by arrows perpendicular to each other on a base 8, and on each guide 12 and 13, an electric motor is installed. A headstock 4 equipped with a work spindle 3 driven by feed screws 14 and 15 and feed screws 16 and 17, and a grinding wheel head 7 equipped with a grinding spindle 6 are slidably mounted so that their center heights are the same. be. Note that a chuck 2 to which the workpiece 1 is attached is attached to the tip of the rotating shaft of the work spindle 3.
Further, a grinding wheel 5 is attached to the tip of the rotating shaft of the grinding spindle 6.

The center-to-center distance between both spindles 3 and 6, that is, a shown by the dimension line in the figure, can not only be changed arbitrarily by operating the feed device of the grinding wheel head 7, but also can be adjusted by finely feeding the cylindrical surface of the workpiece 1. Grinding becomes possible. Also, by operating the feed device of the headstock 4, the workpiece 1
Surface grinding is possible.

A method of using the polishing machine configured as described above will be explained.

First, as shown in FIG. 2, a plurality of workpieces 1 are attached to the surface of the chuck 2 in concentric circles centered around the center of rotation thereof.

If you want to grind the entire surface of the workpiece 1,
As shown in FIG. 3, the position of the grindstone head 7 is adjusted so that the workpiece 1 passes approximately through the center of rotation of the grinding spindle 6. In addition, as shown in FIG. 4, when grinding a step-forming surface of the workpiece 1 having a step with a raised cylindrical surface having a convex shape, the outer peripheral surface of the grinding wheel 5 is placed on the raised cylindrical surface of the step. Adjust the position of the grindstone head 7 so that the

Next, the power of the polishing machine is turned on, and the work spindle 3 and the grinding spindle 6 are rotated.

In the case of full surface grinding as shown in FIG. 3, the electric motor 14 is operated to turn the feed screw 16 and the headstock 4 is sent out, and the end face of the grinding wheel 5 is used for grinding. When grinding the stepped surface shown in FIG. 4, by operating the electric motors 14 and 15 alternately and feeding them alternately, the end surface of the grinding wheel 5 grinds the step plane, and the outer diameter surface grinds the rising cylindrical surface. be done.

In addition, the machining shape of this example, which is adjusted by two axes of XY, is
Compared to the conventional example in which adjustment is performed using the XYZa axes, if the accuracy of each axis is the same, the accuracy improves as the number of axes decreases.

In this embodiment, the guides 12 and 13 in the XY directions are provided separately on the headstock 4 and the grindstone head 7, but guides in both the X and Y directions may be provided on one side. Although the rotating axes of the grinding wheel 5 are parallel to each other, in order to stabilize the machining surface, even if a certain degree of deflection angle is provided, the effects of the present invention will not be impaired. Of course, segments, grooves, cup shapes, etc. may also be used.

(Effects of the Invention) As explained above, according to the present invention, there is provided a polishing machine that can simultaneously grind the step plane and the rising cylindrical surface of a workpiece with steps, which was previously impossible. can get.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a polishing machine according to the present invention, Fig. 2 is a front view of a chuck with a workpiece attached, and Figs. 3 and 4 show the entire surface of the workpiece and a stepped workpiece, respectively. 5 and 6 are both perspective views of a conventional polishing machine. 1... Workpiece, 2... Chuck, 3...
Work spindle, 4... Headstock, 5... Grinding wheel, 6... Grinding spindle, 7... Grinding wheel head,
8... Base, 9... Guide stand, 10... Table, 11... Jig, 12.13... Guide. 14, 15...Electric motor, 16.17...Feed screw. Patent Applicant: Matsushita Electric Industrial Co., Ltd. Figure 1 2... Chii, Waku 3... Work Speed〉Dollar 6... Ishimasu Kirimatabi〉Dollu 7... Ishiro Ishiro 8... Number 12.13...Nanai 14.15...1! Thing / 7-sized seagull 16.17... Soto t2L-・ Figure 2 Figure 3 Figure 4 Figure 1...... Roe Shun 2... + Ya 1, 7ri 5... Stone to stone Car Fig. 5 1...Plant work 2...Chiya, Tsuku 3...Work Matahi 5 dollars 4...Raw glaze 5...Ishioka Ishihayabusa 6...Ishikura g' 1 fork Hindle 7... ...Ishijiishi b 9...back (he) 10...1000-pur 11...see f3

Claims (2)

[Claims] (1) A headstock having a work spindle to which a workpiece is attached and rotates, and a grindstone head having a grinding spindle to which a grinding wheel is attached and rotates are arranged so that the rotation axes of both spindles are parallel to each other. , each of both tables is provided with a drive device capable of moving one table in the direction of the rotation axis of the other spindle and the other table in a direction perpendicular to the one rotation axis,
A polishing machine characterized in that both spindles are rotated and both tables are sent alternately to grind the step forming surface of a workpiece having a step. (2) A polishing machine according to claim (1), characterized in that either one of the stands is equipped with a two-axis drive device in the direction of the rotation axis and in the direction perpendicular to the rotation axis.