JPH0471163B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to improvements in the mounting and positioning mechanism of unit scale devices, and particularly to improvements in the mounting and positioning mechanism of unit scale devices, particularly for various unit scale devices such as optical and magnetic types used in machine tools, measuring devices, etc. This invention relates to improvements for simplifying attachment/detachment and replacement and assembly/manufacturing.

[Conventional technology]

FIG. 6 shows an example of a conventional unit scale device. In the figure, 11 is the unit scale body, 12 is the detection head, 13R, 13L are the foot plates, 14 is the scale channel, 15, 1
6 is an alignment mark (reference point) for installation adjustment,
17 is a mounting surface for a machine tool or the like. Remove the unit scale body 1 from the machine tool, perform maintenance, and attach the foot plate 3 to the mounting surface 8 again.
When mounting via R and 3L, it is necessary to adjust so that the sliding surface of the machine tool has the standard parallelism with respect to the back and top surfaces of the two alignment marks 15 and 16.

[Problem that the invention seeks to solve]

However, according to conventional equipment, this adjustment is a time-consuming task that requires measuring devices such as pick testers and adjustment shims, and is inefficient for numerically controlled machine tools that require high operating rates. Therefore, there was a strong demand for improvement. In addition, even if the bending accuracy of the scale channel 4 is specified for manufacturing purposes, it is not possible to completely eliminate twisting and deflection, so the poor seating that occurs between the foot plates 3R and 3L is corrected by adjusting or correcting with spacers and then assembled. However, the workability was poor in this respect as well, and there was a need to improve the reliability and accuracy of the unit scale device.

[Means for solving problems]

In order to solve the problems of such conventional devices, the present invention provides mounting reference parts at both ends of the unit scale main body, and also fixes the scale to the mounting reference parts, and also mounts the unit in correspondence with the mounting reference parts. It is characterized by the provision of a receiving metal fitting for fixing the scale body.

[Effect]

The mounting reference portion is, for example, in the form of a sphere, and the foot base as the receiving metal fitting is provided with holes and grooves corresponding to the sphere, and the foot cover is attached to the foot base to receive the sphere, and the foot base is attached to the unit scale body. Installation takes place. For example, the back surface of the foot base has an arcuate shape and serves as a reference point during installation.

〔effect〕

According to the present invention, the following effects can be obtained by using the mounting positioning mechanism configured as described above.

(1) Unit scale installation standards can be set accurately and clearly, so there is installation compatibility between scales, and installation of the unit scale is extremely easy, and there is plenty of room for installation, making installation work on machine tools, etc. easier. Become.

(2) The unit scale installation can be unified, and the unit scale structure can be standardized and shared, making it possible to integrate models.

(3) Unit scale machine tools, measuring devices, etc. can be replaced easily, accurately, and in a short period of time, and service to users can be greatly improved.

(4) Since there is no need to consider the seating of the unit scale, there is no need to correct the seating during manufacturing, and in this respect as well, the work efficiency of replacement is significantly improved.

(5) There is no need to consider the bending accuracy of the scale channel during manufacturing, and the cost of unit scale parts can be reduced.

(6) Unit scales with stable accuracy can be supplied to the market, their reliability is improved, and it is possible to easily respond to higher precision scales in the future.

〔Example〕

The present invention will be further explained below with reference to embodiments shown in the drawings. In FIGS. 1 to 4, 1 is a unit scale body, 2 is a scale channel,
3L and 3R are brackets, 4L and 4R are spheres as mounting reference parts, and 5 and 6 are receiving metal fittings for mounting and fixing the unit scale main body 1 corresponding to the mounting reference parts, for example, foot bases 5L and 5.
It consists of R and foot covers 6L and 6R. The bracket and the sphere are integrally formed, and the brackets 3L and 3R are fixed to both ends of the scale channel 2 so that the centers of the spheres 4L and 4R are on the central axis of the scale channel 2.

Foot bases 5L and 5R each have receiving holes 5L ₁ ,
A receiving groove _5R1 is formed, and the spheres 4L, 4R
The unit scale main body 1 is installed by fitting the foot covers 6L, 6R to the foot bases 5L, 5R with screws 7, 8 after fitting them into these receiving holes and grooves.

The foot bases 5L and 5R are installed in advance on a predetermined mounting surface 9 of a machine tool, measuring device, etc. via the mounting holes 10L and 10R, but in order to use this as a reference reference, the back of the foot base should be aligned with the same center as the sphere. It has an arc-shaped mounting reference surface R, and is mounted so that this surface abuts against the abutment surface A. Therefore, even if the foot base slightly rotates in the horizontal direction with respect to the mounting surface 9 about the sphere, it is structured to function as a reference surface.

To replace the unit scale body 1, all you have to do is remove the foot cover from the foot base, take out the unit scale body 1, attach other items to the foot base, and screw the foot cover again, and there is no need for alignment adjustment as in the past. be.

The mounting reference part is not limited to a sphere, but may also be a cylinder, a cone, a trapezoid, or any combination of shapes, such as a sphere on one side and a cylinder on the other.In the case of a sphere, in particular, it is easier to center, so it is easier to manufacture. It is advantageous.

Further, the scale may be of any type, such as an optical type or a magnetic type; for example, a magnetic scale M
When using, it is integrally attached to the attachment reference part 4 as shown in FIG.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing one embodiment of the present invention, and FIG.
The figure is its cross-sectional front view, Figure 3 is its side view, and Figure 4 is its cross-sectional front view.
The figure is a top view, FIG. 5 is a schematic diagram showing an example of the scale mounting method in this embodiment, and FIG. 6 is a schematic diagram showing an example of the conventional unit scale mounting method. 1... Unit scale body, 2... Scale channel, 3L, 3R... Bracket, 4L,
4R... Mounting reference part, 5, 6... Receiving metal fittings.

Claims (1)

[Scope of Claims] 1. Mounting reference parts are provided on brackets at both ends of a scale channel that accommodates the scale, and the scale is fixed to the mounting reference parts, and the scale has a foot cover and a foot base that support the mounting reference parts. The foot base is attached to a predetermined mounting surface, and the mounting reference portion has a substantially rotationally symmetrical shape, and its rotation center axis is parallel to the mounting surface of the foot base and extends in the length direction approximately at the center of the scale channel. A mounting positioning mechanism for a unit scale device, wherein the foot base is provided with a recess corresponding to the mounting reference part, and the mounting reference part is sandwiched and fixed between the recess and the foot cover. 2. The mounting positioning mechanism for a unit scale device according to claim 1, wherein the mounting reference portion is a spherical body. 3. A side surface of the foot base, which is orthogonal to the mounting surface and along the length direction of the scale channel, is formed in an arc shape having substantially the same center as the mounting reference portion of the sphere, so that the foot base can be mounted to the abutting surface when the foot base is mounted. The mounting positioning mechanism for a unit scale device according to claim 2, characterized in that the unit scale device serves as a reference surface.