JP2012112890A - Jig for measuring outer peripheral surface of skid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jig that, when measuring an outer peripheral surface of a skid for skid bearing, can set, remove, and center the skid easily, improve operability, and improve efficiency of the measurement.SOLUTION: In a jig for measuring an outer peripheral surface of a skid, a hollow portion is formed into which the skid is jammed. The portion into which the skid is jammed is formed by an elastic body. Also, it is preferable to form an air vent port in the jig for measuring the outer peripheral surface of the skid. It is also preferable that a bottom surface of the hollow portion includes a convex portion.

Description

  The present invention relates to a jig for measuring an outer peripheral surface of a roller bearing roller in a circumferential direction.

  Conventionally, in roller bearings used for machine parts and the like, an outer periphery that is a rolling surface of the roller 2 as shown in FIG. 6 mainly for the purpose of preventing concentrated load generated at the contact portion between the roller and the race. The surface 2A is subjected to crowning. Moreover, in order to manage this crowning shape, the method of measuring the shape of the outer peripheral surface of the roller which was crowned is proposed (for example, refer to Patent Document 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. The purpose of the present invention is to easily attach and detach rollers and center them when measuring the outer peripheral surface of a roller bearing roller in the circumferential direction. It is intended to provide a jig capable of improving the efficiency and improving the efficiency of measurement.

  In order to solve the above problems, the present invention has the following configuration. That is, the roller outer peripheral surface measuring jig according to the present invention is provided with a cavity for pushing the roller, and a portion into which the roller is pushed is made of an elastic body. Moreover, it is preferable to provide an air vent hole in the roller outer peripheral surface measuring jig. Moreover, it is preferable to have a convex part in the inner surface of the cavity.

  According to the present invention, in the circumferential measuring jig on the outer circumferential surface of the roller, the portion into which the roller is pushed is made of an elastic body. Therefore, when the roller is pushed in, at least a part of the inner circumferential surface of the elastic body is elastic. It contacts the outer peripheral surface of the roller while deforming. Therefore, when measuring the outer circumferential surface of the roller bearing roller in the circumferential direction, the roller can be easily attached and detached and centered, so that the workability can be improved and the measurement can be made more efficient.

Sectional drawing of the roller outer peripheral surface measuring jig which concerns on 1st Embodiment of this invention. Sectional drawing of the state which pushed the roller into the roller outer peripheral surface measuring jig which concerns on 1st Embodiment of this invention Sectional drawing of the roller outer peripheral surface measuring jig which concerns on the modification of 2nd Embodiment of this invention. Sectional drawing of the roller outer peripheral surface measuring jig which concerns on 3rd Embodiment of this invention. Sectional drawing of the roller outer peripheral surface measuring jig which concerns on 4th Embodiment of this invention. Sectional view of a conventional roller outer peripheral surface measurement jig

Hereinafter, each embodiment of the roller outer peripheral surface measuring jig according to the present invention will be described with reference to the drawings.
<First Embodiment>
As shown in FIG. 1, the roller outer peripheral surface measuring jig 1 of this embodiment is provided with a cavity 1A for pushing the roller 2, and the roller contact portion 1B, which is a portion for pushing the roller, has a cylindrical elastic shape. Consists of the body. As the material of the elastic body, polyethylene, polyurethane, polypropylene, and the like are preferable from the viewpoint of ease of elastic deformation, strength, appropriate hardness that does not damage the rollers, durability, and availability. Further, the inner diameter d of the inlet portion 1B1 of the roller contact portion 1B 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 roller outer peripheral surface measuring jig 1. 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 measurement, since at least a part of the inner peripheral surface of the inlet portion 3A is elastically deformed and contacts the outer peripheral surface of the roller, when measuring the outer peripheral surface of the roller bearing roller in the circumferential direction, Rollers can be easily attached and removed and centered. Moreover, the roller outer peripheral surface measuring jig 1 is fixed to an arbor 3, and the arbor 3 is attached to a rotating device (not shown). The roller outer peripheral surface measuring jig 1 is preferably screwed and fixed to the arbor 3 such that the head of the screw 4 is positioned on the inner surface 1C of the cavity. Screw fixing allows the roller outer peripheral surface measuring jig 1 to be firmly fixed to the arbor 3 and easily replaced. Further, if the head of the screw 4 is positioned on the inner surface 1C of the cavity, it is possible to prevent the rollers 2 from being attracted to the inner surface 1C of the cavity and becoming difficult to remove. Moreover, the fixing method with respect to the arbor 3 of the roller outer peripheral surface measuring jig 1 may use an adhesive, or the end surface 3A of the arbor 3 is formed in a concave shape, and the outer peripheral surface 1D on the arbor side of the roller measuring jig 1 is fixed. , It may be a tight fit. When the end surface 3A of the arbor 3 is concave and the outer peripheral surface 1D on the arbor side of the roller outer peripheral surface measuring jig 1 is fit, the roller outer peripheral surface measuring jig 1 can be replaced more easily and quickly. I can do it. When the roller end surface 2B is in direct contact with the inner surface 1C of the cavity, the roller end surface 2B is adsorbed to the inner surface 1C of the cavity by increasing the roughness of the inner surface of the cavity. Can be difficult to remove. FIG. 2 is a view showing a state where the roller 2 of FIG. 1 is attached to the arbor 3. The roller outer peripheral surface measurement jig 1 is fixed to the arbor 3 using an adhesive. After attaching the roller 2, the rotating device (not shown) is rotated to rotate the arbor 3, the roller outer peripheral surface measuring jig 1, and the roller 2 while bringing the probe 5 into contact with the outer peripheral surface 2A of the roller. The roundness and the webiness of the outer peripheral surface can be measured by a measuring device (not shown).

Second Embodiment
In the second embodiment of FIG. 3, an air vent hole 11 </ b> E is provided in a portion near the arbor 3 of the roller outer peripheral surface measurement jig 11. Therefore, when the roller 2 is attached to and detached from the roller measurement jig 11, the air in the space 11F enters and exits, and the roller 2 is easily attached and detached.

<Third Embodiment>
In the third embodiment of FIG. 4, an air vent hole 12 </ b> E is provided in a portion near the arbor 3 of the roller outer peripheral surface measurement jig 12, and a stopper 12 </ b> F is provided. After the roller 2 is attached to the arbor 3, it is possible to prevent the roller 2 from falling off during rotation by closing the hole 12E with the stopper 12F.

<Fourth embodiment>
In the fourth embodiment shown in FIG. 5, an air vent hole 13E, a stopper 13F, and a convex portion 13G for abutting the end surface 2B of the roller are provided in a portion near the arbor 3 of the roller outer peripheral surface measuring jig 13. ing. The presence of the convex portion 13G is preferable because the posture of the roller 2 is stabilized during measurement. In particular, when the roller contact portion 13A and the outer peripheral surface 2A are small in contact with each other when the difference between the maximum diameter and the minimum diameter of the outer peripheral surface 2A of the roller is large as in the spherical roller of FIG. Since it may be difficult to stabilize, it is preferable to provide the convex portion 13G. The shape of the convex portion 13G can be a columnar shape, a semi-cylindrical shape, a cylindrical shape, a triangular prism shape, a quadrangular prism shape, a polygonal column shape, various conical shapes, a spiral shape, and the like. More than one is preferable, and more than three is more preferable for stabilizing the posture of the roller 2.

  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, 13 Roller outer peripheral surface measuring jigs 1A, 11A, 12A, 13A Cavity 1A1 Back surface 1B, 13B Roller contact portion 1B1 Inlet portion 1C Back surface 1D Arbor side outer peripheral surface 2 Roller 2A Roller outer periphery Surface 2B End surface 2C of roller Maximum outer diameter portion 3 Arbor 3A End surface 4 Screw 5 Measuring element 7 Reference piece 8 Jig body 11E, 12E, 13E Air vent holes 12F, 13F Plug 13G Convex portion

Claims (3)

A roller outer peripheral surface measuring jig, wherein a cavity for pressing a roller is provided, and a portion into which the roller is pressed is made of an elastic body. The roller outer peripheral surface measuring jig according to claim 1, wherein an air vent hole is provided. The roller outer peripheral surface measuring jig according to claim 1, wherein a convex portion is provided on the inner surface of the cavity.

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