JPS63210701A - Correcting and measuring instrument for rail shaft - Google Patents

Abstract

PURPOSE:To measure straightness and coaxiality and correct the straightness in one process by providing a supporting body on a substrate and racking a body to be inspected, and providing a hand press and a dial gauge in contact with the body to be measured. CONSTITUTION:Supporting bodies 3a and 3b are provided on supporting bases at both end parts of the substrate 1, and the large-diameter part D of the body W to be inspected is racked horizontally. Further, the hand press 5 and dial gauge 6 are added to a column 4 and a lever type dial gauge 8 is provided nearby both small-diameter parts (d) of the body W to be inspected. Thus, the work contactor of the gauge 6 is brought into contact with the large- diameter part D and respective contactors 8a of the gauge 8 are brought into contact with the small-diameter parts (d); when the body W to be inspected is rotated by one turn by using a work rotating device 9, the straightness and coaxiality of the body W to be inspected are measured in one process and the correction body 5b of the press 5 is pressed against the body W to be inspected to correct its curvature.

Description

Detailed Description of the Invention [Objective of the Invention] (Industrial Application Field) The present invention uses a rail shaft for a printer incorporated in office automation equipment such as a personal computer or a word processor as an object to be inspected. This invention relates to a rail shaft straightening/measuring device that performs straightness correction, straightness measurement, and coaxiality measurement of a (measured object) in one step.

(Prior Art) Generally, this type of rail shaft has a long shaft body a having a large diameter portion and small diameter portions d formed at both ends thereof, as shown in FIGS. 2 and 3. The object W to be inspected, which is a rail shaft having a large diameter portion and a small diameter portion d, is subjected to straightness correction, straightness measurement, and coaxiality measurement independently of each other before assembly. This is done using straighteners, straightness measuring devices and coaxiality measuring devices.

(Problems to be Solved by the Invention) However, the rail shaft straightening/measuring means described above does not include a straightness straightener, a straightness measuring device, and a coaxial measuring device that are configured independently for the object W to be inspected. Due to the fact that they are replaced or exchanged, the efficiency of measurement and inspection is not only reduced, but also measurement errors due to individual differences are added, making it difficult to improve measurement accuracy.

The present invention has been made in view of the above-mentioned circumstances, and is a method for straightening a rail shaft that accurately corrects the straightness of an object to be inspected as a rail shaft, measures straightness, and measures coaxiality in one process.・The purpose is to provide measurement equipment.

[Structure of the invention]

(Problems to be Solved by the Invention and Their Effects) The present invention provides a pair of support bodies on a substrate, and a device to be inspected in which a small diameter portion and a large diameter portion are formed on both of the support bodies can be rotated. A rotatable support is erected on the board near the large diameter part of the object to be inspected, a hand press and a dial gauge are attached to this support, and By installing each dial gauge on the above-mentioned board so as to touch each small diameter part and rotating the above-mentioned object to be inspected once, straightness correction, straightness measurement, and coaxiality measurement of this object to be inspected can be accurately corrected in one step. Moreover, it is constructed so that it can be inspected quickly.

(Example) Hereinafter, the present invention will be described with reference to an illustrated embodiment.

In FIG. 1, reference numeral 1 denotes a flat substrate, and support stands 2 a s 2 b are substantially integrally provided at both ends of this substrate 1 .
2b, a pair of supports 3as3b, such as, for example, blocks 3, are arranged in parallel facing each other. Furthermore, on both of the supporting bodies 3a s3b, an object W to be inspected is horizontally mounted by a rail shaft, and this object W to be inspected is shown in FIGS. 2 and 3. As shown, the middle of the shaft body a is formed with a large diameter portion, and both ends of the shaft body a are formed with small diameter portions d. Further, on the substrate 1 near the large diameter portion of the object W to be inspected, a support 4 is erected so as to be rotatable by its handle 4a.
A hand press 5 for straightening the object W to be inspected is provided. Note that this hand press 5 has a frame 5a.
For example, a rack and a pinion are incorporated therein, an operating handle 5b is pivotally attached to this pinion, and a correction body 5 is attached to the rack.
c is positioned directly above the object W to be inspected and is attached so that it can be moved up and down.

A dial gauge 6 is attached to the support 4 next to the hand press 5, and the dial gauge 6 has a workpiece contact 6b for straightness measurement on its main body 6a.
and a measurement display section 6C that displays the measured straightness value.

On the other hand, each support shaft 7 is erected on the support stand 2a s2b near both the small diameter portions d, and each lever-type dial gauge 8 is mounted on each support shaft 7 for measuring coaxiality. The workpiece contactor 8a is provided with a workpiece contactor 8a, and each workpiece contactor 8a measures each small diameter portion d of the object W to be inspected by contacting the same, and performs each measurement of each small diameter portion d. The coaxiality is measured by comparing this value with the measured value of the large diameter portion. Moreover, both the support stands 2 a s 2
A pair of workpiece rotating devices 9 are installed on b to slowly rotate the object W to be inspected.

That is, this work rotation device 9 has a knob 9b on a frame 9a.
A friction roller 9C having a friction roller 9C is mounted on a shaft so that it can rotate in contact with the outer periphery of the large diameter portion.

Therefore, in advance, the test object W is placed on both the supporting bodies 3a and 3b.
Mount the large diameter part horizontally. Next, the workpiece contactor 6b of the dial gauge 6 is brought into contact with the large diameter portion, and each workpiece contactor 8a of both dial gauges 8 is brought into contact with the workpiece contactor 6b of the dial gauge 6.
comes into contact with the small diameter portion d. Thereafter, by pinching the knob 9b of the work rotation device 9 and rotating it substantially, it is possible to measure the straightness and coaxiality of the object W to be inspected in one step. On the other hand, when correcting the straightness of the object W to be inspected, the handle 4a is grasped and the support column 4 is rotated to move the hand press 5 directly above the object W to be inspected. Thereafter, by grasping and rotating the operating handle 5b of the hand press 5, the correction body 5b of the hand press 5 is pressed against the object W to be inspected to correct the bend.

〔Effect of the invention〕

As described above, according to the present invention, a pair of support bodies 3a''-3b are provided on the substrate 1, and a small diameter portion d and a large diameter portion are formed on both of the support bodies 3a and 3b. A support 4 is rotatably mounted on the substrate 1 near the large diameter portion of the object W to be inspected, and a hand press 5 and a dial gauge 6 are attached to the support 4. and each dial gauge 8 is provided on the substrate 1 near the small diameter portions d so as to contact each small diameter portion d, so that straightness and coaxiality can be quickly and accurately determined in one process. Not only can measurement and straightness correction be performed, but it is also easy to handle, so it can be measured without requiring any skill.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the rail shaft correction/measuring device of the present invention, FIG. 2 is a front view of an object to be inspected by the rail shaft used in the present invention, and FIG. 3 is a side view of the same. . DESCRIPTION OF SYMBOLS 1... Board, 3a, 3k)... Support body, 4... Support column, 5... Hand press, 6.8... Dial gauge, 9... Work rotation device. Applicant's agent Sato - Male procedural amendment June 9, 1986

Claims (1)

[Claims] A pair of supports is provided on a substrate, and a test object with a small diameter part and a large diameter part formed on both supports is rotatably mounted. A support is rotatably installed on the base plate, a hand press and a dial gauge are attached to the support, and each dial gauge is installed on the base plate near both of the small diameter parts so as to come into contact with each of the small diameter parts. A rail shaft straightening/measuring device featuring: