JP2012225816A - Peripheral surface measuring apparatus of rolling member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device capable of simplifying attachment and centering of a rolling member to a retainer, improving workability, and making measurement efficient when the peripheral surface on which the cross section of a measurement part of the rolling member is approximately circular is measured in the circumferential direction.SOLUTION: A peripheral surface measuring apparatus of a rolling member has: fixing means 3 for fixing the rolling member when the peripheral surface on which the cross section of a measurement part of the rolling member is approximately circular is measured in the circumferential direction; and a centering jig 4 on the same axis as that of the fixing means. The centering jig 4 is provided with a cavity 4A into which a roller 2 which is the rolling member is pressed, and it is preferable that a roller contact part 4B which is a part into which the roller is pressed consists of an elastic body.

Description

  The present invention relates to an apparatus for measuring a rolling member such as a rolling bearing part in the circumferential direction, and is suitable for measuring the outer peripheral surface of a roller for a roller bearing.

  Conventionally, a rolling member needs to be inspected and managed with high accuracy such as the diameter, roundness, and webiness of a peripheral surface in order to ensure vibration suppression and rotation accuracy during rotation of the rolling device. . As a prior art of this portion, a method has been proposed in which the shape of the outer peripheral surface 2A, which is the rolling surface of the roller that is the rolling member 2, is measured in the axial direction as shown in FIG. 1).

In Patent Document 1, a roller to be measured is placed in a jig body 8 in a state where the roller to be measured is axially sandwiched by a pair of reference pieces 7 whose vertical surface accuracy is ensured and is positioned in a radial direction. The stylus of the measuring device is run in the axial direction along the outer shape of the roller, and the shape of the generatrix of the outer peripheral surface in the axial direction of the roller is measured.
JP 2000-241153 A

  However, in order to suppress vibration during rotation and improve the rotation accuracy, not only the shape of the generatrix of the outer peripheral surface in the axial direction of the roller but also the roundness in the circumferential direction and the waveness need to be above the reference value. However, the measurement as shown in Patent Document 1 measures the shape of the generatrix of the outer peripheral surface in the axial direction of the roller, and does not measure the shape of the roller in the circumferential direction.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to transfer a fixing device to a fixing device when measuring a circumferential surface having a substantially circular cross section of a measuring portion of a rolling member in a circumferential direction. It is an object of the present invention to provide an apparatus capable of simplifying attachment and centering of a moving member, improving workability, and improving the efficiency of measurement.

  In order to solve the above-mentioned problems, the rolling member circumferential surface measuring device according to the present invention provides a rolling member when measuring a circumferential surface having a substantially circular cross section of the measuring portion of the rolling member in the circumferential direction. A fixing means for fixing and a centering jig coaxial with the fixing means are provided.

  According to the present invention, when measuring a circumferential surface having a substantially circular cross section of the measuring portion of the rolling member in the circumferential direction, the mounting and centering of the rolling member to the fixing device are simplified, and workability is improved. Can improve the efficiency of measurement.

Sectional drawing before the roller measurement of the peripheral surface measuring apparatus of the rolling member which concerns on 1st Embodiment of this invention. Sectional drawing at the time of roller measurement of the peripheral surface measuring apparatus of the rolling member according to the first embodiment of the present invention Sectional drawing before the roller measurement of the surrounding surface measuring apparatus of the rolling member which concerns on 2nd Embodiment of this invention. Sectional drawing at the time of roller measurement of the surrounding surface measuring apparatus of the rolling member which concerns on 2nd Embodiment of this invention. Sectional drawing before the roller measurement of the surrounding surface measuring apparatus of the rolling member which concerns on 3rd Embodiment of this invention. Sectional drawing at the time of roller measurement of the surrounding surface measuring apparatus of the rolling member which concerns on 3rd Embodiment of this invention. Sectional view of a conventional rolling member circumferential surface measuring device

Embodiments of a rolling member circumferential surface measuring apparatus according to the present invention will be described below with reference to the drawings.
<First Embodiment>
FIGS. 1 and 2 are cross-sectional views of the rolling member circumferential surface measuring apparatus according to the first embodiment of the present invention before and at the time of measuring spherical rollers. As shown in FIG. 1, the rolling member circumferential surface measuring device 1 according to the present embodiment performs rolling when measuring a circumferential surface 2 </ b> A having a substantially circular cross section of the measuring portion of the rolling member 2 in the circumferential direction. A fixing means 3 for fixing the moving member and a centering jig 4 coaxial with the fixing means are provided. The centering jig 4 is provided with a cavity 4A for pushing the roller 2 as a rolling member, and the roller contact portion 4B which is a portion into which the roller is pushed is made of a cylindrical elastic body. Elastic materials include polyethylene, polyurethane, and polypropylene due to the ease of elastic deformation, strength, moderate hardness that does not damage the rollers, durability, availability, and absorbability of variations in roller diameter. Etc. are preferred. Further, as shown in FIG. 2, the inner diameter d of the inlet portion 4B1 of the roller contact portion 4B is preferably the same as the outer diameter D1 of the end surface 2B of the roller or larger than D1. Then, the roller 2 can be easily pushed into the centering jig 4. The inner diameter dimension d is preferably the same dimension as the outer diameter D2 of the maximum outer diameter portion 2C of the roller 2 or smaller than D2. Then, at the time of centering, at least a part of the roller contact portion 4B is elastically deformed and contacts the outer peripheral surface of the roller, so that the roller can be easily centered. Moreover, in order to make attachment and detachment of the roller 2 easy, it is preferable to provide the air hole 4C. The fixing means 3 coaxial with the centering jig 4 includes an arbor 3A and a magnet 3B, and the arbor 3A is attached to a rotating device (not shown). The magnet 3B is fixed to the arbor 3A.

  When the roller 2 which is a rolling member is pushed into the cavity 4 </ b> A of the centering jig 4 as shown in FIG. 1, the core is aligned with the centering jig 4. The roller 2 is fixed to the fixing means 3 by the magnetic force of the magnet 3B before the centering jig 4 moves in a direction approaching the fixing means 3 and the roller end surface 2B contacts or contacts the magnet 3D. And the core of the fixing means 3 substantially coincide. Since the centering jig 4 is retracted in the direction away from the fixing means 3, the peripheral surface 2A of the roller can be measured with a stylus 5 in a wide range in the axial direction.

Second Embodiment
3 and 4 are cross-sectional views showing the state of the cylindrical roller 12 before and during the measurement. Since other parts are the same as those in the first embodiment, description thereof is omitted.

<Third Embodiment>
5 and 6 are cross-sectional views showing the state before and during measurement of the cylindrical roller. In order to facilitate centering, it is preferable to push into the centering jig from the end surface 22B1 on the small diameter side of the tapered roller 22, and in order to firmly fix the end surface 22B2 on the large diameter side of the tapered roller, It is preferable to fix to the magnet 3B. Further, in order to facilitate the centering, the inner surface of the roller contact portion 24B of the centering jig 24 is preferably a cone having a shape close to the outer peripheral surface 22A of the tapered roller, and the cavity 24A of the centering jig 24 is formed. The diameter of the inner surface 24D is preferably smaller than the diameter of the end surface 22B1 on the small diameter side of the tapered roller.

  Moreover, the above-mentioned embodiment shows an example of this invention, Comprising: This invention is not limited to these embodiment. As long as the gist of the present invention is not deviated, the present invention can be applied to other embodiments.

1, 11, 12 Rolling member circumferential surface measuring device 2 Roller 2A, 22A Roller outer circumferential surface 2B Roller end surface 2C Roller maximum outer diameter portion 3 Fixing means 3A Arbor 3B Magnet 4, 14, 24 Centering jig 4A 24A Cavity 4B, 24B Roller contact portion 4B1 Inlet portion 4C Air hole 5 Contact needle 7 Reference piece 8 Jig body 12 Cylindrical roller 22 Tapered roller 22B1 Tapered roller end surface 22B2 Tapered roller end surface 24D Back Face of

Claims (1)

In the rolling member circumferential surface measuring device, a fixing means for fixing the rolling member when measuring a circumferential surface having a substantially circular cross section of the measuring portion of the rolling member in the circumferential direction, and coaxial with the fixing means An apparatus for measuring a circumferential surface of a rolling member, comprising: an upper centering jig.

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