JPH01307601A - Measuring instrument - Google Patents

Abstract

PURPOSE:To improve the working accuracy of a measuring instrument and to execute an assembly of a short delivery date by adjusting a straightness adjusting device in which a sliding rail for guiding a sliding body is provided on one of supporting members against the supporting member. CONSTITUTION:Supporting posts 5R, 5L are provided vertically on the rear side on both sides of a measuring table 3 in a measuring instrument 1, and on the upper part of the supporting posts 5R, 5L, supporting arms 9R, 9L which have been formed as one body toward the front are provided. On the supporting posts 5R, 5L and the supporting arms 9R, 9L, X axis use rails 13R, 13L being sliding rails which have been extended in the X axis direction are laid through supporting members 11R, 11L. On the inside and the outside of a ball being a cylindrical member interposed between the supporting member 11L and the X axis use rail 13L, straightness adjusting devices 57, 59 are provided, respectively, and by adjusting the devices 57, 59, straightness of the X axis use rail 13L is adjusted. In such a way, the working accuracy of the measuring instrument is improved and an assembly of a short delivery date can be executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a measuring device, and more particularly to a measuring device equipped with a straightness adjusting device for adjusting the straightness of a sliding body.

(Prior Art) Conventionally, in a measuring device such as a three-dimensional measuring device, the straightness (straightness) accuracy of a machine is determined by the straightness of a sliding rail that constitutes the straightness. In other words, the accuracy of the machine is said to depend on the accuracy of machining the parts of the vibration rail.

(Problem to be solved by the invention) However, there is a limit to the machining of the parts that make up the sliding rail, and in order to manufacture a machine with higher precision, it is necessary for the operator to manually straighten the rail sliding surface. A correction was necessary. Therefore, straightness correction relies on the experience and intuition of the operator, and requires considerable time and effort.

An object of the present invention is to provide a measuring device equipped with a straightness adjustment device that improves the straightness of parts at the stage of machine assembly adjustment and improves the straightness accuracy of the machine itself, in order to improve the above-mentioned problems. There is a particular thing.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides support members on both sides of a base in a measuring device, and provides support members on each support member via a cylindrical member. A sliding rail is provided, and an active body that is guided by the sliding rail and is movable in the longitudinal direction of the sliding rail is provided on the vibration rail, and straightness is maintained on the inside and outside of the cylindrical member in one of the supporting members. A measuring device was constructed by providing a straightness adjustment device for adjustment.

(Function) By employing the measuring device of the present invention, the sliding body exhibits a middle gate or middle convex movement depending on the shape of the sliding rail. In this case, by pressing the slide rail with a straightness adjustment device provided on the outside of one of the supporting members, one of the driving rails is corrected to a flat state, and the slide body is smoothly moved.

In addition, if the movement of the sliding body tends to be convex or convex, by pulling the sliding rail downward with a straightness adjustment device installed on the inside of one of the supporting members, the active rail is corrected to a flat state and the sliding body becomes smooth. will be moved to

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

Referring to FIG. 6, FIG. 7, and FIG. 8, the measurement table 3 in the three-dimensional measuring device 1 as a measuring device, for example, is in the X-axis direction (vertical direction in FIG. 7, horizontal direction in FIG. 8). and a rectangular shape extending in the Y-axis direction (left-right direction in FIGS. 6 and 7). On the rear side on both sides of this measuring table 3 (upper side in FIG. 7, left side in FIG. 8), there are support posts 5R2.
5L is attached with a plurality of bolts 7 and stands upright. At the top of each of the support posts 5R, 5L, support arms 9R, 9L are provided which are integrated toward the front.

Each support post 5R, 5L and support arm 9R.

On 9L, X
X-axis circumferential rails 13R, 13L are laid as mutually parallel sliding rails extending in the axial direction. A plurality of air bearings 1 are provided on the X-axis peripheral rails 13R and 13L.
X-axis carriages 17R and 17L as 18 moving bodies are provided movably via 5R and 151. Also, X
A distance sensor for detecting the distance in the X-axis direction is provided on one side of the shaft rail 13L.

With the above configuration, the X-axis carriages 17R, 17L are moved to the X-axis circumferential rail 13R,
13 m and will be moved in the X-axis direction.

On the X-axis carriages 17R and 17L, there are a plurality of Y-axis rails 19 extending parallel to each other in the Y-axis direction and separated from each other.
F, 19B is installed.

A Y-axis carriage 23 is provided on the Y-axis rails 19F, 19B via a plurality of air bearings 21F, 21B. Furthermore, a distance sensor for detecting the distance in the Y-axis direction is provided at the rear of the Y-axis rail 19B.

With the above configuration, the Y-axis motor (not shown) or manually moves the Y-axis
The shaft carriage 23 is moved guided by the Y-axis rails 19F and 19B.

A vertical shaft 25 extending in the Z-axis direction is mounted on the Y-axis carriage 23 and is movable in the Z-axis direction (up and down in FIGS. 6 and 8).

A probe 27 is attached to the tip of this vertical shaft 25 (lower part in FIGS. 6 and 8).

Furthermore, the Y-axis carriage 23 is provided with a guide rail 29 for guiding the vertical shaft 25. The guide rail 29 is provided with a distance sensor that detects the distance in the Z-axis direction. Above the Y-axis carriage 23 is a vertical axis 2.
A frame body 31 covering 5 is attached.

With the above configuration, the vertical shaft 25 is guided to the guide rail 29 by the Z-axis motor (not shown) or manually, and the Z-axis
It will be moved in the axial direction.

As the vertical shaft 25 is moved in the X-, Y-, and Z-axis directions, the measuring table 3 is placed on the measurement table 3 with a probe 27 attached to the tip of the vertical shaft 25 by 5A. A workpiece, which is an object to be measured (not shown), will be measured.

On the support member 11L that is integrated with the upper surfaces of the support post 5L and the support arm 9L by welding or the like, there is an X-axis circumferential rail 1.
3L is supported. More specifically, as shown in FIG. 5, a step-shaped corner 33 is formed on the left inner side of the upper part of the supporting member 11L, and the X-axis The lower left side of the circumferential rail 13L is brought into contact and tightened from the right side with a plurality of bolts 37 via the backing plate 35. Therefore, the X@ rail 13L is accurately positioned on the support member 11m. Can be assembled simply and easily.

Note that the configuration in which the X-axis rail 13R is assembled to the support member 11R is almost the same as the configuration in which the X-axis peripheral rail 13L is assembled to the support member 11L, so a detailed explanation will be omitted.

The X-axis rail 131 is provided so as to be freely adjustable in the height direction and vertically with respect to the support member 11L. More specifically, as shown in FIG. 2, FIG. 3, and FIG. 4, for example, between the square pipe-shaped support member 11L and the left side of the X-axis circumferential rail 13L, there is a gap between the X-axis circumferential rail 13L. A plurality of, for example two, balls 39 are interposed as cylindrical members separated from each other in a direction perpendicular to the longitudinal direction. V-shaped groove 41V in contact with the lower surface of each ball 39
A male screw 41 with a cylindrical shape is screwed into a female screw portion 43 formed through the support member 11L in the height direction.

With the above configuration, by rotating the male screw 41, the height of the left side of the support member 131- is adjusted via the ball 39.

A square vibe-shaped support member 11m and an X@ rail 13L on the outside of each ball 39 (on the left side in FIG. 2)
A penetrating female threaded portion 45 is provided in the part facing the field direction.
and a female threaded portion 47 are respectively formed.

From the bottom of this female thread 45 section upwards, the female thread l'!
The X-axis rail 131 is fixed to the support member 11 by screwing the male screw 49 into the X-axis rail 1145.47 and rotating it.

As shown in FIGS. 1, 3, and 4, between the support member 11L and the right side of the X-axis circumferential rail 13L, located approximately in the middle of each of the balls 39, One ball 51 as a cylindrical member is interposed. A male screw 53 having a V-shaped groove 53V that abuts the lower surface of the ball 51 is screwed into a female screw portion 55 formed to extend vertically through the support member 11L.

With the above configuration, by rotating the male screw 53,
The height of the right side of the support member 13m is adjusted via the ball 51.

On the inside and outside of the ball 51, there are first,
A second straightness adjustment device ff57.59 is provided.

In other words, the first straightness adjustment device 57 is the support member 1 on the inside of the ball 51 (on the left side in FIG. 1).
A female threaded portion 61 and a female threaded portion 63 are respectively formed in portions in the height direction opposite to the circumferential rail 1L and the X-axis circumferential rail 13L.

The female threaded portion 61 is
．． By screwing a male screw 65 into 63 and rotating it, the X-axis peripheral rail 13 is fixed to the support member 11L.

Moreover, if it is determined that the X@ rail 13L has a tendency to be convex, the X-axis peripheral rail 13L can be tightened further upward using the ball 51 as a fulcrum.
The left side portion of the ball 51 is pulled downward to adjust the verticality of the X-axis rail 13m.

As the second verticality adjustment device 59, an L-shaped bracket 67 is attached to the right side surface of the support member 11L in FIG. 1 with a plurality of bolts 69. bracket 67
The tip portion 67A of the L-shaped portion in is the X-axis circumferential rail 13.
It is inserted into the hollow part of L, and the tip part 67A is formed with a female screw part 71 that extends in the height direction. A male screw 73 is screwed into the female screw portion 71, and a V-shaped groove 73 is formed at the tip of the male screw 73. A ball 75 as a cylindrical member is interposed between the V-shaped groove 73V and the inner wall of the X-axis peripheral rail 13L.

With the above configuration, when it is determined that the X-axis circumferential rail 13L has a tendency to be concave, the male screw 73 is rotated to rotate the X-axis circumference via the ball 75.

The rail 13m is pressed downward. As a result, the right side portion of the X-trusted rail 13m is pressed downward using the ball 51 as a fulcrum, and the verticality of the X-axis circumferential rail 13L is adjusted.

In this way, the X-axis peripheral rail 13L as a sliding rail is connected to the first and second straightness adjustment devices 5 with respect to the support member 11L.
The straightness can be easily and easily adjusted by adjusting 7.59. -Thus, when assembling and assembling the three-dimensional measuring device 1 as a measuring instrument, the verticality of the X-axis output rail 13R as a rotating rail is pursued, straightness is achieved, and the X-axis carriage as a sliding body is used. It can be adjusted while ensuring the straightness of 17R, and high accuracy can be obtained.

Furthermore, it is possible to reduce the cost of the three-dimensional measuring device 1 and to assemble it in a short delivery time.

Furthermore, in the configuration in which the X-axis rail 13R is attached to the support member 11R, the X-axis peripheral rail 13L is attached to the support member 11R.
Since the configuration is almost the same as that attached to the X-axis rail 13R, the straightness adjustment of the X-axis output rail 13R is the same as described above, so detailed explanation will be omitted.

Note that the present invention is not limited to the embodiments described above, but may be modified as appropriate. It can be implemented in other ways. In this embodiment, straightness adjustment of the X-axis circumferential rail has been described, but straightness adjustment of other axes can be similarly handled.

[Effects of the Invention] As understood from the above description of the embodiments, according to the present invention, the opening rail can be easily adjusted with respect to the support member by adjusting the straightness adjustment device provided on one side of the support member. and can be easily adjusted. Therefore, if you adjust the straightness of the ffl moving rail while checking the straightness of the 'Pi initial body installed on the sliding rail that is connected to the measuring instrument, the machining accuracy of the measuring instrument can be improved and the delivery time can be shortened. Assembly becomes possible.

[Brief explanation of the drawing]

Figure 1 is an enlarged cross-sectional view of the section viewed from the arrow in Figure 3, Figure 2 is an enlarged cross-sectional view of the section viewed from the ■ arrow in Figure 3, and Figure 3 is the
4 is a plan view of FIG. 3, FIG. 5 is an enlarged view of a section viewed from V in FIG. 6, and FIG. 7 is a front view of the three-dimensional measuring device, FIG. 7 is a plan view in FIG. 6, and FIG. 8 is a left side view in FIG. 6. 1... Three-dimensional measuring device 9R, 9L... Support post (base) 11R, 11L
...Supporting members 13R, 13K...X-axis circumferential rail (sliding rail) 17
R, 17L...X-axis carriage (sliding body) 39.51
．． 75... Ball (cylindrical member) 49.63.73...
・Female screw agent Yasuo Miyoshi, patent attorney Figure 2

Claims (1)

[Claims] Support members are provided on both sides of the base in the measuring device, and a sliding rail is provided on each support member via a cylindrical member,
A sliding body that is guided by the sliding rail and is movable in the longitudinal direction of the sliding rail is provided on the sliding rail, and the straightness for adjusting the straightness of the inside and outside of the cylindrical member on one of the supporting members is provided. A measuring device characterized by being provided with an adjusting device.