JPS62259786A - Xy adjusting structure of surface plate - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an XY adjustment structure for a surface plate used, for example, in various processing machines and inspection machines.

[Conventional technology]

This type of surface plate has a flat finished surface and is used to obtain a flat surface that serves as a reference in processing, inspection, etc. FIG. 4 shows a conventional surface plate, in which the surface plate 1 consists of a fixed surface plate 2 and a movable surface plate 3 supported on the fixed surface plate 2 so as to be slidable in the horizontal direction. Eight holders 4... are fixed to the peripheral edge of 2. Numerals 5a to 5h are adjustment bolts screwed into the holders 4, and 6 are lock nuts for fixing these adjustment bolts to the holders 4. The adjustment bolts 5a to 5h move the movable surface plate 3 in the direction indicated by the arrow X by bringing their tips into contact with the side surface of the movable surface plate 3.
It is moved in the direction of arrow Y and is fixed at a predetermined position.

That is, when adjusting the position of the movable surface plate 3, the movable surface plate 3 is adjusted in the arrow X direction and then in the arrow Y direction. To be more specific, first loosen all the lock nuts 6. Then, after loosening the adjusting bolts sa, 5b or adjusting bolts 5e, 5f by more than a predetermined amount, adjustment in the direction of arrow X is performed by tightening the adjusting bolts 5e, 5f or adjusting bolts 5a, 5b by a predetermined amount. At this time, since the movable surface plate 3 is tightened by the adjustment bolts 5c, 5d, 5g, and 5h, it is necessary to loosen these adjustment bolts a little. After the adjustment in the direction of the arrow X is completed in this manner, the adjustment bolts 5a, 5b are removed.

Lightly tighten 5e and 5f. Then, in the same way as the adjustment in the direction of arrow X, adjust pol) 5 c, 5 d, 5 g.

At 5h, move the movable surface plate 3 by a predetermined amount in the direction of arrow Y to perform adjustment in the direction of arrow Y, and in this state, tighten the adjustment bolts 5a to 5h.
, and further tighten the lock nuts 6 to complete the XY adjustment of the movable surface plate 3.

[Problem that the invention seeks to solve]

Therefore, in the conventional surface plate, in order to move the movable surface plate 3, it is necessary to loosen or tighten all of the many lock nuts 6... and adjustment bolts 5a to 5h, and the XY adjustment of the surface plate is required. There was a problem that made the work extremely complicated. In order to solve this problem, it is possible to reduce the number of adjustment bolts, but if the number of adjustment bolts for each side of the movable surface plate 3 is reduced to 2 or less, the movable surface plate 3 will easily rotate, making adjustment difficult. Become.

The present invention was made in view of the above circumstances, and its purpose is to provide an XYJ alignment structure for a surface plate that facilitates the XY adjustment work of the surface plate.

[Means for solving problems]

The xy adjustment structure of the surface plate according to the present invention includes two elongated holes arranged in the same longitudinal direction and one elongated hole perpendicular to these elongated holes, which are bored in the fixed surface plate. The lower shaft part of the eccentric pin, which consists of two shaft parts with different axes, is rotatably fitted into these elongated holes, and the upper shaft part of the eccentric pin is rotatably fitted into the holding hole drilled in the movable surface plate. They are fitted together.

[Effect]

In the present invention, when the eccentric pin is rotated, the lower shaft portion of the eccentric pin moves relative to the upper shaft portion, so that the movable surface plate is moved by the lower shaft portion.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings. Fig. 1 is an exploded perspective view showing a surface plate in which the xy adjustment structure of the surface plate according to the present invention has been implemented, Fig. 2 is the same (plan view), and Fig. 3 is a cross-sectional view taken along the line m-m in Fig. 2. , number 1 in these figures
0 indicates a surface plate, and this surface plate 10 includes a fixed surface plate 11 formed in a rectangular flat plate shape like the conventional one, and an arrow X direction and an arrow Y direction on this fixed surface plate 11. It is comprised of a movable surface plate 12 supported slidably in the horizontal direction.

The fixed surface plate 11 has two long holes 15 arranged in the longitudinal direction.
, 16, and one elongated hole 17 whose longitudinal direction is perpendicular to the longitudinal direction of these elongated holes 15, 16. These elongated holes have an oval shape in plan view and penetrate the fixed surface plate 11 in the vertical direction.

The two elongated holes 15, 16 are positioned such that their longitudinal directions are in the same direction. In the embodiment, the two elongated holes 15 and 16 have their longitudinal center lines on the same straight line extending in the direction of the arrow Y, and the two elongated holes 15 and 16 are located on the same straight line extending in the direction of the arrow Y.
It is located in one corner. In addition, one long hole 17
is positioned at the other corner of the fixed surface plate 11.

25, 26, and 27 are small diameter lower shaft portions 25a.

26a, 27a, and large-diameter upper shaft portions 25b, 26b, 27b having different axes from the lower shaft portion. Reference numerals 35, 36, and 37 are holding holes bored in the movable surface plate 12 facing the long holes 15° and 16, 17, and the upper shaft portions 25b, 26b, and 27b of the eccentric pins 25, 26, and 27 are rotatable. is mated to. Lower shaft portions 25a, 26a,
27a protrudes downward from the lower surface of the movable surface plate 12, is rotatably fitted into the elongated hole 15, 16, 17, and engages with the hole wall. In other words, the diameter of the lower shaft portion is approximately equal to the width of the elongated hole. Reference numeral 40 denotes a driver groove for rotating the eccentric pin 25°26.27, which is recessed in the upper end surface of the pin head in the diametrical direction.

45, 46, 47 are fixing screws for fixing the eccentric pins 25, 26, 27, and the movable constant E! It is screwed into threaded holes 55, 56.57 bored from the outer surface of i12 so as to intersect with the holding holes 35, 36.37.

In the XY adjustment structure of the surface plate configured in this way,
When the eccentric pin 25, 26, 27 is rotated, the lower shaft part 2
5a, 26a, 27a are upper shaft parts 25b, 26b, 27
These lower shaft portions 25a, 26
The movable surface plate 12 can be moved by a and 27a. That is, when moving the movable surface plate 12 in the direction of the arrow X, first the fixing screws 45, 46, 47 are loosened, and the eccentric pin 25 is rotated. In this way, the movable surface plate 12
rotates about the eccentric pin 26 in the direction of arrow Xa.

Next, when the eccentric pin 26 is rotated by the same amount as the eccentric pin 25, the movable surface plate 12 rotates in the direction of the arrow Xb about the eccentric pin 25, so that the movable surface plate 12 eventually moves in the direction of the arrow X. For movement in the direction of arrow Y, use eccentric pin 2.
When 7 is rotated, the movable surface plate 12 moves to the eccentric pin 25.26.
This can be done by moving in the direction of arrow Y using as a guide. When the fixing screws 45, 46 and 47 are tightened in this state, the eccentric pins 25, 26 and 27 are identified and the XY adjustment of the movable surface plate 12 is completed.

Therefore, loosen the three fixing screws 45, 46, 47,
By engaging a driver in the driver grooves 40 and rotating the three eccentric pins 25, 26, 27, the movable surface plate 12 can be moved to perform XY adjustment.

In addition, in the above embodiment, an example was explained in which two elongated holes 15° 16 were extended so that their longitudinal center lines were on the same straight line, but the present invention is not limited to this. Instead, the elongated holes 15 and 16 may be spaced apart in the direction of the arrow X, and the elongated holes 15 and 16 may be bored so that the extended line of the longitudinal center line forms two parallel straight lines. Furthermore, the long holes 15, 16, and 17 may be rectangular in plan view, and do not necessarily need to penetrate the fixed surface plate 11. Furthermore, a spanner hook can be provided at the head of the eccentric pin 25, 26° 27 instead of the driver groove 4o.

〔Effect of the invention〕

As explained above, according to the present invention, two long holes arranged in the same longitudinal direction and one long hole perpendicular to these long holes are bored in the fixed surface plate, The lower shaft part of the eccentric pin, which consists of two shaft parts with different axes, is rotatably fitted into these long holes, and the upper shaft part of the eccentric pin is rotatably fitted into the holding hole drilled in the movable surface plate. When the eccentric pin is rotated, the lower shaft portion of the eccentric pin moves relative to the upper shaft portion, so that the movable surface plate is moved by the lower shaft portion.

Therefore, the movable surface plate can be adjusted using the three eccentric pins, and the number of members to be operated during adjustment can be reduced, making the adjustment work easier. Another advantage is that the rotation direction of the movable surface plate can be adjusted.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing a surface plate in which the XY adjustment structure for a surface plate according to the present invention is implemented, FIG. 2 is a plan view of the same, and FIG. FIG. 4 is a perspective view showing a conventional surface plate. 11...Fixed surface plate, 12...Movable surface plate, 15°16.17...Long hole, 25,26. ．． 27...
Eccentric pin, 35, 36, 37...retaining hole.

Claims (4)

[Claims] (1) In a surface plate in which a movable surface plate is horizontally slidably supported on a fixed surface plate, the fixed surface plate has two elongated holes whose longitudinal directions are the same and which are arranged in the longitudinal direction. Then, one elongated hole whose longitudinal direction is perpendicular to the longitudinal direction of these elongated holes is bored, and the lower shaft portion of an eccentric pin consisting of two shaft portions with different axes is rotatably fitted into this elongated hole. An XY adjustment structure for a surface plate, characterized in that the upper shaft portion of the eccentric pin is rotatably fitted into a holding hole drilled in the movable surface plate. (2) The XY adjustment structure for a surface plate according to claim 1, wherein the longitudinal center lines of the two elongated holes are on the same straight line. (3) The XY surface plate according to claim 1, characterized in that a driver groove is provided in the head of the eccentric pin.
Adjustment structure. (4) The XY surface plate according to claim 1, characterized in that a spanner hook is provided on the head of the eccentric pin.
Adjustment structure.