JPH0749368Y2 - Flat plate thickness measuring device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device capable of simultaneously measuring the thickness of a flat plate, for example, at least two glass plates.

[0002]

2. Description of the Related Art As means for measuring thickness, mechanical,
There are various means such as electromagnetic and optical, but as an apparatus for measuring the thickness of a flat plate with a simple mechanical means, for example, Japanese Utility Model Laid-Open No. 61-1101 discloses a channel type frame and the frame. There is disclosed a micrometer for measuring wall thickness, which includes an anvil having a curved surface attached to one inner wall of one of them, and a micrometer head protruding to the other inner wall of the frame facing the inner wall.
In Japanese Patent Laid-Open No. 4-2101, a pair of measuring levers are pivotally supported by a fulcrum pin, and a displacement amount measured by the measuring levers is detected by an eddy current displacement sensor incorporated in a dial gauge portion, and the detected amount is converted into a voltage. A digital display type carrier package for converting and outputting to a digital display is disclosed. Further, Japanese Utility Model Laid-Open No. 63-38003 discloses a frame, an anvil attached to a lower part of the frame, and a spindle facing the anvil. A flat plate thickness measuring device equipped with a dial gauge or a digimatic indicator attached to the upper portion of the frame in a state of having a holding member attached to the upper portion of the frame and movable in the axial direction of the spindle. A flat plate thickness measuring device including a flat plate pressing device is disclosed.

[0003]

[Problems to be solved by the invention] Shoukai 61-110
In the micrometer of Japanese Patent Publication No. 1, the ratchet is reversely rotated to open the interval of the tracing stylus, the flat plate to be measured is inserted into the interval, and then the ratchet is positively rotated until the constant pressure device moves, so that the constant pressure device is provided. Even with a ratchet handle, the measurement pressure changes, and a measurement error of 2-3 microns occurs,
The number of measurement points is only one, and in addition, the operating time due to the forward / reverse rotation of the handle, etc. is inefficient.
In the case of the -2101 publication, the efficiency is significantly improved because it is a lever type instead of the former rotation, but an error is likely to occur unless the front and back surfaces of the object to be measured and the tip of the measuring lever are perpendicularly contacted. There is a drawback that a measurement error occurs by a person and the measurement is only one point at a time.
In the Japanese Patent Laid-Open No. 003 publication, a pressing member provided with three points of shell stylus around a central stylus is designed so that the stylus comes into contact with a flat plate surface perpendicularly. An ultra-thin glass plate could be damaged by pressing it at a right angle and forcibly pressing it, and it had the disadvantage of only measuring one point.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide a device capable of simultaneously measuring the thickness of a flat plate at a plurality of points without human error. An anvil is provided in the lower part of the frame that is mounted via a shaft on a stand that stands upright on the base, and a digimatic indicator is provided in the upper part of the frame with the probe at the spindle end facing the anvil. In a flat plate thickness measuring device that allows the reciprocating motion of the spindle to be operated with a release, at least two measuring devices are provided , and the reciprocating motion of the spindle is opposed to the frame on the base and the upper surface is inclined. Direction and
There is provided a flat plate thickness measuring device comprising: a vertically arranged measuring table; and a cam portion for simultaneously operating the pair of releases.

[0005]

[Function] The forward movement of the contact point provided on the spindle is simultaneously operated by the forward movement operation of the cam portion provided with the cam mechanism, and the pair of releases are simultaneously actuated to measure the anvil that opens the tip end edge of the flat plate placed on the measuring table and the measurement. The spindle is moved back by the return operation of the cam part by the spring operation incorporated in the digimatic indicator, and the flat plate is pressed by the closing of the contact point to stop the spindle and display the thickness at that position.

[0006]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view showing the entire assembly of the device according to the present invention, FIG. 2 is an internal sectional view for explaining a cam portion, and FIG. 3 is a side view of the device on which a plate to be measured is mounted, which is partially cut away.

An anvil 4 ( commercial object to be measured), which is commercially available for measuring a concave lens, is mounted on a lower portion of the base 1 via a stand 2 standing upright on the upper surface of the base 1 and a shaft 3 extending between the stands 2 .
A pair of frames 5 and 5 of Mitutoyo Co., Ltd. model 7313 are mounted, and a contact point at the end of the spindle 6 is attached to the anvil 4 above the respective frames. Mitutoyo Corporation 543 series (ID) digimatic indicators 10 and 10 are provided in which the display panel 8 and the set button 9 are arranged in a state in which 7 is opposed, and measurement is performed with the anvil 4 at a position opposed to the frame. An extension line connecting the child 7, that is, the axis of the spindle 6 and the glass plate measuring surface are perpendicular to each other, and the measuring table 13 laid on a plane slightly lower than the upper end of the anvil and the digimatic indicator 10 are mounted. A box-shaped cam portion 14 for operating reciprocating movement along the axis of the spindle 6 is provided. An operating lever 15 is provided inside the cam portion and a cam shaft 16 is provided. The disk cam 17 having a elliptical profile curve which can be rotated as the core, the contour curve end face through the sliding plate 18 to facilitate the rotation of the circular plate cam and the rod 19
A pair of releases 20 abutting each other and performing a follower movement are connected and arranged, and the other end of the release is connected to a predetermined connection hole of the digimatic indicator 10 to form a thickness measuring device 21 for the glass plate 11, the plan aims to protect the surface of the glass plate 11 is laid neoprene rubber plate 12 of 3mm thickness over the measuring table 13, and the upper plane is provided with a tilt angle of about 20 degrees relative to the base 1 The work of inserting and removing the edge of the glass plate 11 between the openings of the anvil 4 and the measuring element 7 is facilitated, and the reciprocating movement of the spindle 6, that is, the locus thereof is tilted by 20 degrees like the measuring table 13, so that the frame 5, 5
The axis line between the anvil 4 holding the glass plate 11 and the measuring element 7 is always perpendicular to the glass plate.

The operation of the present invention will be described below. The thickness measuring device 21 installed on a desk (not shown) with the display panel 8 of the digimatic indicators 10 and 10 facing forward, first presses the set button 9 to confirm the setting of the zero point of the display panel 8.
When the lever 15 of the cam portion 14 is pushed forward, that is, in the direction of the arrow shown in FIG. 2, the disc cam 17 makes about 1/4 rotation about the cam shaft 16 as an axis, and the disc cam 17 is moved to the end face of the disc cam 17 via the sliding plate 18. The ends of the pair of abutting rods 19 are pressed,
The other end of the rod, that is, the rod 19 connected to the digimatic indicator 10 by the release 20, pushes up a seat fixed to a spindle (not shown) mounted inside the digimatic indicator, and contacts the anvil 4 by the forward movement of the spindle 6. The stylus 7 in the state is separated.

In a state in which the anvil 4 and the contact point 7 are spaced apart and open all at once, the glass plate 11 is placed on the measuring stand 13 and the tip end edge of the glass plate 11 is inserted into the anvil 4 which is open, and the lever 15 is inserted. The rod 19 of the release 20 also follows the contour curve of the circular disk cam 17 that rotates when it is pulled down toward the side opposite to the arrow, and the push-up of the rod 19 that pushes up the spindle seat (not shown) causes the digimatic indicator 10 to move. A built-in spring (not shown) operates to move the spindle 6 back in the direction of the anvil 4, and the tracing stylus 7 presses the surface of the glass plate 11 to stop the descending movement of the spindle. The thickness values of the glass plate 11 are simultaneously displayed on the respective display boards 8, and the values are pressed vertically to the anvil 4 for the concave lens and the surface of the glass plate 11. A stator 7, always no measurement error by the pressing of the spindle 6 and the instrument internal spring pressure accurately, human error is also eliminated.

After reading the numerical value, the lever 15 is tilted to raise the probe 7, and the glass plate 11 is taken out. Then, the glass plate 11 to be measured next is placed on the measuring table 13, and the above-mentioned operations are repeated.

Needless to say, the operation of the lever 15 may be an electric type or a stepping type, and the two-point measurement is performed by the pair of releases 20, but the piston type is used instead of the cam portion. By pressing a plurality of releases 20 all at once, it is possible to measure a plurality of points at the same time.

[0012]

EFFECT OF THE INVENTION The present invention provides a simple mechanism of the cam portion to measure the thickness of a flat plate at a plurality of points at the same time by operating the reciprocating lever once. and the pressure contact angle between the glass plates measuring surface of the gauge head as vertical, spherical anvil and feeler tip having a convex shape
As a result of the point contact, there is no measurement error, the operation can be performed quickly, and labor saving of the work is achieved.

[Brief description of drawings]

FIG. 1 is a perspective view showing the entire assembly of a device according to the present invention.

FIG. 2 is an internal sectional view illustrating a cam portion.

FIG. 3 shows an assembled side view in which a glass plate is placed and a part of the device is cut away.

[Explanation of symbols]

 1 ... Base 2 ... Stand 3 ... Shaft 4 ... Anvil 5 ... Frame 6 ... Spindle 7 ... Measuring element 10 ... Digimatic indicator 13 ... Measuring table 14 ... Cam section 20 ... Release 21 ... Measuring device

Claims (1)

[Scope of utility model registration request] 1. A digimatic is provided on an upper portion of the frame with an anvil provided at a lower portion of a frame mounted on a stand standing on a base via a shaft, and a probe at a spindle end is opposed to the anvil. In a flat plate thickness measuring device having an indicator and allowing the reciprocating motion of the spindle to be operated by a release, at least two measuring devices are provided, and the measuring device faces the frame on the base.
Inclining the surface to be perpendicular to the reciprocating direction of the spindle
An apparatus for measuring the thickness of a flat plate, comprising: a measuring table thus provided; and a cam portion for simultaneously operating the pair of releases.