JPH0448486Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to a positioning mechanism for various unit scale devices, such as optical and magnetic types, for measuring the relative moving distance of two objects.

B. Summary of the invention The unit scale body has a mounting reference part and a holding fitting for attaching and fixing the unit scale main body, and a ball is formed integrally with the holding fitting, and the ball is inserted into the counterbore of the reference part. It is inserted into the base and divided into multiple parts by slots, and when a tapered screw is screwed along the diameter passing through the slots, it expands and fixes the reference part.

C. Prior Art FIG. 5 shows an example of a conventional unit scale device. In the figure, 11 is the unit scale body with a built-in magnetic scale, etc., 12 is the detection head, and 13 is the unit scale body.
R and 13L are foot plates, 14 is a scale channel, 15 and 16 are reference points for installation adjustment, 1
7 is the mounting surface of the machine tool. In such a conventional unit scale device, the unit scale main body 11 is removed from the machine tool, etc., and after inspection and maintenance, the foot plate 13 is reattached to the mounting surface 17.
When mounting via R and 13L, it is necessary to adjust so that the back and top surfaces of the two reference points 15 and 16 have standard parallelism with respect to the sliding surface of the machine tool or the like.

D Problems that the invention aims to solve However, with conventional equipment, this adjustment is a time-consuming task that requires measuring equipment such as a bit tester and adjustment shims. Because of its poor performance, there was a strong demand for its improvement. Furthermore, even if the bending accuracy of the scale channel 14 is specified for manufacturing purposes, twisting and deflection cannot be completely eliminated, so the foot plates 13R, 13
Since the poor seating that occurs between L must be corrected by adjustment or correction using spacers during assembly, workability is poor in this respect as well, and it is necessary to improve the reliability and accuracy of the unit scale device. It was hot.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mounting positioning mechanism for a unit scale device that facilitates installation, replacement, and adjustment of the unit scale.

E. Means for Solving the Problems In order to achieve the above object, the mounting and positioning mechanism for the unit scale device according to the present invention includes a reference part attached to both ends of the unit scale body, and a holding metal fitting that holds the reference part. , the gist includes a ball that is fixed to the above-mentioned holding fitting, is divided into a plurality of pieces by a slot, and is pushed apart when the taper screw is screwed in.

F. Effect By screwing in the tapered screw and pushing the spheres apart, the reference part is fixed to the holding fitting, and the unit scale can be easily attached to the desired mounting surface.

G Embodiment FIG. 1a is a top view of a ball fixed to one object, which is used in the mounting and positioning mechanism of a unit scale device according to the present invention, and FIG. 1b is a side view partially shown in section. 2 is a partially sectional side view of the unit scale main body 11 fixed using the mounting and positioning mechanism of the unit scale device according to the present invention, in which 1 is a holding metal fitting, 2 is a slot, 3 is a tapered female thread, 4 is a sphere, 5 is a pilot hole, 6 is a bracket forming a reference part provided at both ends of the unit scale body 11, 7 is a counterbore, 8 is a countersunk, 9 is a tapered male thread, 10 11 indicates a mounting surface of a machine tool, etc., and 11 indicates a scale body.

In FIG. 1, the holding fitting 1 and the sphere 4 are integral, and the sphere 4 is provided with a plurality of slots 2.
It has a tapered female thread 3 in its center, and a prepared hole 5 penetrates below the slot 2.

In FIG. 2, the bracket 6 has a counterbore 7 slightly larger than the sphere 4, and has a countersink 8 at the tip thereof for positioning the sphere. If the tapered male screw 9 protruding from the hole 6' on the top surface of the bracket 6 is screwed in with an L wrench etc., the sphere 4
expands in a direction perpendicular to the direction in which the screw is screwed in, is pressed against the counterbore portion 7, and the bracket 6
can be fixed.

In other words, if the parallelism between the holding bracket 1 and the machine tool body is maintained, the scale can be attached to the machine tool by simply screwing in the two male screws protruding from the brackets at both ends of the scale body, and the tightening load of the screws will be applied to the scale body. Since it is not applied directly to the channel 11', it is possible to prevent deterioration of accuracy, and when replacing the scale, it is not necessary to align the holding fitting 1 in parallel, so that the scale unit can be easily replaced.

It is noted that the screwing direction of the tapered screw does not necessarily have to be perpendicular to the scale unit, but may be vertical to the scale unit, as shown in Figures 3a and b and Figure 4. Of course.

Note that the bracket 6 may be provided not on the unit scale side but on the main body side of the machine tool or the like.

H. Effects of the invention As explained above, according to the invention, the unit scale installation standards can be set accurately and clearly, so there is installation compatibility between the scales, and installation of the unit scale is extremely easy. Installation work on machine tools, etc. becomes easier.
Furthermore, the workability of installation and maintenance is improved,
Service for users will also be improved. Since there is no need to consider the seating of the unit scale or the bending accuracy of the channel, it improves workability during manufacturing, reduces costs, and allows the supply of stable precision unit scales to the market. Leads to improved reliability.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a ball fixed to one object, which is used in the mounting and positioning mechanism of a unit scale device according to the present invention, and FIG. FIGS. 3 and 4 are side views, partially in cross section, of the unit scale fixed with the
FIG. 5, a diagram corresponding to FIG. 2, and FIG. 5 are perspective views of a conventional unit scale. 1... Holding metal fitting, 2... Slot, 3... Tapered female thread, 4... Sphere, 5... Pilot hole, 6... Bracket forming the reference part, 7... Counterbore, 8
...Countersunk massaging, 9...Tapered male thread, 10...Mounting surface for machine tools, etc., 11...Scale body.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Consisting of a scale and a detection body that scans the scale and detects the amount of movement relative to the scale,
In a unit scale device in which the scale or detection object interlocks with the object to be measured, mounting reference parts are provided on the brackets at both ends of the scale channel that accommodates the scale, and a holding metal fitting having a sphere for holding the mounting reference part is provided. , this sphere is fixed to the holding fitting and is divided into a plurality of pieces by slots, and is formed so that it can be pushed out when screwing in the tapered screw, and the part of the sphere that contacts the mounting reference part is connected to a predetermined mounting surface of the object to be measured. Mounting positioning of a unit scale device, characterized in that the unit scale device is mounted so as to be parallel to the mounting surface, and the mounting reference portion engages with the sphere and is fixed to the mounting surface by screwing in a tapered screw. mechanism. (2) The unit according to claim 1, wherein the bracket having the mounting reference portion is provided with a counterbore slightly larger than the sphere and a countersink at the tip of the counterbore. Mounting and positioning mechanism for scale equipment.