JP2014163853A - Shape detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shape detector that facilitates centering of a measuring object for support means and is capable of improving workability.SOLUTION: The recess 34 of one end surface 32 of a jig 30 in a shaft direction is conical and coaxial with a spindle 10. The radial direction width A of the recess is larger than the radial direction width B of a cylindrical roller 3. The cylindrical roller 3 displaces in a radial direction so as to be coaxial with the recess 34 by being pushed from the shaft direction by the recess 34 of the jig 30 under a state of being supported by the spindle 10 and is disposed to be coaxial with the spindle 10.

Description

  The present invention relates to a shape detection device.

  Conventionally, rollers (cylindrical rollers, tapered rollers, spherical rollers, etc.), which are rolling elements of bearings, have been inspected and managed for the shape of their outer peripheral surfaces to ensure vibration suppression and rotational accuracy during bearing rotation. . As the shape measurement of the outer peripheral surface of the roller, contact type measurement in which a stylus is applied to the outer peripheral surface of a rotating roller is well known (for example, see Patent Document 1).

  The peripheral surface measuring device of Patent Document 1 has a fixing means for fixing the roller, and a centering jig coaxial with the fixing means, and the centering jig is made of an elastic body. In order to simplify the centering.

JP 2012-225816 A

  However, in the peripheral surface measuring apparatus of Patent Document 1, since the centering jig is an elastic body, there is a possibility that deformation occurs and misalignment occurs. Moreover, the said centering jig | tool uses the thing for exclusive use according to the shape (cylindrical roller, cone) and size of a roller. Here, since there are enormous types of rollers, a great amount of cost is required for designing and manufacturing a jig dedicated to each roller.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a shape detection device that facilitates centering of a measurement object with respect to a support means and can improve workability.

The above object of the present invention can be achieved by the following constitution.
(1) a support means for supporting a measurement object having a circumferential surface from the axial direction;
A jig for coaxially arranging the measurement object with respect to the support means;
Detection means for detecting the shape of the circumferential surface of the measurement object;
A shape detection device comprising:
The jig is formed with a recess toward the other end side in the axial direction on one end surface in the axial direction facing the measurement object,
The concave portion is conical and coaxial with the support means, and its radial width is longer than the radial width of the measurement object,
The measurement object is displaced in the radial direction so as to be coaxial with the recess by being pushed by the recess of the jig from the axial direction while being supported by the support, and is coaxial with the support. A shape detection device characterized by being arranged.
(2) The support means is provided with a fixing means capable of fixing the measurement object on the other axial end surface that supports the measurement object.
The shape detection apparatus according to (1), wherein the fixing means fixes the measurement object when the measurement object and the support means are coaxially arranged by the jig.
(3) The shape detection apparatus according to (1) or (2), wherein the measurement object is a rolling element, an inner ring, or an outer ring of a rolling bearing.
(4) Support means for supporting a measurement object having a circumferential surface from the axial direction while having a through-hole penetrating in the axial direction;
A jig for coaxially arranging the measurement object with respect to the support means;
Detection means for detecting the shape of the circumferential surface of the measurement object;
A shape detection device comprising:
The jig is formed with a convex portion toward one end side in the axial direction on one end surface in the axial direction facing the measurement object,
The convex portion is conical and coaxial with the support means, and its radial width is longer than the radial width of the through hole of the measurement object,
The measurement object is coaxial with the projection by being pushed from the axial direction so that a part of the projection of the jig enters the inside of the through-hole while being supported by the support means. The shape detecting device is characterized in that it is displaced in the radial direction and arranged coaxially with the support means.
(5) The support means is provided with a fixing means capable of fixing the measurement object on the other axial end surface that supports the measurement object.
The shape detection apparatus according to (4), wherein the fixing means fixes the measurement object when the measurement object and the support means are coaxially arranged by the jig.
(6) The shape detection apparatus according to (4) or (5), wherein the measurement object is an inner ring or an outer ring of a rolling bearing.

  According to the shape detection device of the present invention, the concave portion of the one axial end surface of the jig is conical and coaxial with the support means, and its radial width is longer than the radial width of the measurement object, The measurement object is displaced in the radial direction so as to be coaxial with the concave portion by being pushed axially by the concave portion of the jig while being supported by the supporting means, and is arranged coaxially with the supporting means. Therefore, the measuring object can be easily centered with respect to the support means, and workability is improved. Further, it is not necessary to design and manufacture a dedicated jig for different types of measurement objects, and a low-cost shape detection apparatus can be realized.

  Further, according to the shape detection apparatus of the present invention, the convex portion of the one end surface in the axial direction of the jig has a conical shape and is coaxial with the support means, and its radial width is the diameter of the through hole of the measurement object. It is longer than the width in the direction, and the measurement object is supported by the support means, and is pressed from the axial direction so that a part of the convex portion of the jig enters the inside of the through hole, thereby being coaxial with the convex portion. It is displaced in the radial direction so as to be arranged coaxially with the support means. Therefore, the measuring object can be easily centered with respect to the support means, and workability is improved. Further, it is not necessary to design and manufacture a dedicated jig for different types of measurement objects, and a low-cost shape detection apparatus can be realized.

It is sectional drawing of the shape detection apparatus which concerns on 1st Embodiment. (A)-(e) is a figure for demonstrating the method of centering a cylindrical roller with respect to a spindle. (A) is sectional drawing of the cylindrical roller and jig | tool before centering, (b) is a III-III arrow line view of (a). (A) is sectional drawing of the cylindrical roller and jig | tool after centering, (b) is IV-IV arrow line view of (a). It is a fragmentary sectional view of the shape detection apparatus which concerns on a modification. It is a front view of the shape detection apparatus which concerns on 2nd Embodiment.

  Hereinafter, the shape detection apparatus of each embodiment according to the present invention will be described in detail with reference to the drawings.

(First embodiment)
As shown in FIG. 1, the shape detection device 1 of the present embodiment is a spindle as a support means for supporting a cylindrical roller 3 of a rolling bearing as a measurement object from one end side in the axial direction (lower side in FIG. 1). 10, a motor 20 that rotationally drives the spindle 10, a jig 30 that coaxially arranges the cylindrical rollers 3 with respect to the spindle 10, and detection means that detects the shape of the outer peripheral surface 3 a (circumferential surface) of the cylindrical rollers 3. 40.

  Here, FIG. 1 shows a state after the cylindrical roller 3 is arranged coaxially with the spindle 10 by the jig 30, and the central axes of the cylindrical roller 3, the spindle 10, and the jig 30 coincide with each other. That is, they are arranged coaxially with each other. 1 represents the central axis of the spindle 10.

  The spindle 10 is provided with an electromagnet 14 (fixing means) that can fix the cylindrical roller 3 on the other axial end surface 12 that supports the cylindrical roller 3. The electromagnet 14 can control the generation / stop of the magnetic force by turning the coil energization ON / OFF, thereby enabling the cylindrical roller 3 to be fixed / released.

  The jig 30 has a conical recess 34 formed on one end surface 32 in the axial direction facing the cylindrical roller 3 toward the other end in the axial direction. The jig 30 is arranged so that the recess 34 is coaxial with the spindle 10, that is, its apex 34 a passes through the central axis G of the spindle 10. The radial width A of the recess 34 is set to be longer than the radial width B of the cylindrical roller 3.

  The detection means 40 includes a probe 42 that contacts the outer peripheral surface 3 a of the cylindrical roller 3 and detects surface information, and a computer 44 that analyzes and outputs the surface information detected by the probe 42. The detection means 40 is not limited to a contact type that contacts the outer peripheral surface 3a of the cylindrical roller 3, but may be a non-contact type using a laser or the like.

  A method for arranging the cylindrical roller 3 coaxially with the spindle 10 in the shape detecting device 1 configured as described above will be described below with reference to FIGS.

  First, as shown in FIG. 2A, the spindle 10 and the jig 30 are arranged coaxially so that the apex 34 a of the recess 34 of the jig 30 passes through the central axis G of the spindle 10. Here, the electromagnet 14 is not energized by the coil.

  Next, as shown in FIG. 2B, the cylindrical roller 3 is placed on the electromagnet 14 so as to be positioned in the vicinity of the central axis G of the spindle 10. At this time, the central axis G ′ of the cylindrical roller 3 and the central axis G of the spindle 10 do not necessarily coincide with each other. Further, as described above, since the coil magnet is not energized in the electromagnet 14, the cylindrical roller 3 is released from the electromagnet 14.

  Subsequently, as shown in FIG. 2C, the jig 30 is displaced toward the one end side in the axial direction until the concave portion 34 contacts the cylindrical roller 3. Here, referring also to FIG. 3, when the central axis G ′ of the cylindrical roller 3 and the central axis G of the spindle 10 do not coincide with each other, a part of the outer peripheral edge 3 b of the cylindrical roller 3 is recessed in the jig 30. 34 abuts against each other.

  Further, when the jig 30 is displaced toward one end in the axial direction, the cylindrical roller 3 is displaced along the inclined surface of the concave portion 34 by being pushed from the axial direction of the concave portion 34 of the jig 30. As shown in FIGS. 2D and 4, the cylindrical roller 3 has its outer peripheral edge 3 b in contact with the recess 34 of the jig 30, so that its radial displacement is restricted, and the cylindrical roller 3 is coaxial with the recess 34. That is, the central axis G ′ of the cylindrical roller 3 is disposed so as to pass through the apex 34 a of the recess 34. As a result, the central axis G ′ of the cylindrical roller 3 and the central axis G of the spindle 10 coincide with each other, and the cylindrical roller 3 and the spindle 10 are arranged coaxially.

  Thereafter, as shown in FIG. 2 (e), the electromagnet 14 is energized with a coil to fix the cylindrical roller 3, and then the jig 30 is retracted to the other end side in the axial direction, so that the spindle 10 of the cylindrical roller 3. The centering and fixing with respect to is finished. The spindle 10 and the cylindrical roller 3 are integrally rotated by the motor 20, and the shape of the outer peripheral surface 3 a of the cylindrical roller 3 is detected by the detection means 40.

  As described above, according to the shape detection device 1 of the present embodiment, the concave portion 34 of the one end surface 32 in the axial direction of the jig 30 has a conical shape and is coaxial with the spindle 10 and its radial width A. Is longer than the radial width B of the cylindrical roller 3, and the cylindrical roller 3 is supported by the spindle 10 so as to be coaxial with the concave portion 34 by being pushed from the axial direction by the concave portion 34 of the jig 30. It is displaced in the radial direction and is arranged coaxially with the spindle 10. Therefore, the cylindrical roller 3 can be easily centered with respect to the spindle 10 and workability is improved.

  The spindle 10 is provided with an electromagnet 14 that can fix the cylindrical roller 3 on the other axial end surface 12 that supports the cylindrical roller 3. The electromagnet 14 is coaxially connected to the cylindrical roller 3 and the spindle 10 by a jig 30. When placed, the cylindrical roller 3 is fixed. Therefore, the state where the centering of the cylindrical roller 3 is completed can be reliably maintained, and the accuracy of the shape measurement of the outer peripheral surface 3a can be improved.

  In the above-described embodiment, the cylindrical roller 3 is illustrated as an object to be measured. However, for example, a rolling element (such as a spherical roller) of a rolling bearing, an inner ring, an outer ring, or the like may be used. FIG. 5 shows the shape detection device 1 when the object to be measured is an outer ring 5 of a rolling bearing.

  Here, since the shape detection apparatus 1 according to the modification shown in FIG. 5 has the same basic configuration as that of the first embodiment, the same or corresponding parts are denoted by the same reference numerals as those of the first embodiment. doing. In this modification, the shape of the spindle 10 and the size of the electromagnet 14 are different from those of the first embodiment, but the functions and functions are the same and the same effects can be obtained. Therefore, also in this modification, by using the jig 30, the outer ring 5 can be easily centered with respect to the spindle 10 and workability is improved. Thus, it is not necessary to design and manufacture a dedicated jig for different types of measurement objects, and a low-cost shape detection apparatus can be realized.

  After the centering is completed, the spindle 10 and the outer ring 5 are integrally rotated by the motor 20, and the shape of the outer peripheral surface 5a (circumferential surface) of the outer ring 5 is detected by the detecting means 40 (see FIG. 1). . The detection means 40 may be configured to detect the inner peripheral surface 5b (circumferential surface) of the outer ring 5.

(Second Embodiment)
Next, a shape detection apparatus 1A according to a second embodiment of the present invention will be described with reference to FIG. The shape detection device 1A of the present embodiment has the same basic configuration as the shape detection device 1 (see FIG. 1) according to the modification of the first embodiment, and the configuration of the jig and the measurement object is different. Corresponding portions are denoted by the same reference numerals, and the description thereof is omitted or simplified, and different portions are described in detail.

  In the present embodiment, the object to be measured is an inner ring 7 of a rolling bearing, and the inner ring 7 has a through hole 7a penetrating in the axial direction.

  In the jig 30 </ b> A, a conical convex portion 35 is formed on one end surface 32 in the axial direction facing the inner ring 7 toward the other end in the axial direction. The jig 30 is arranged so that the convex portion 35 is coaxial with the spindle 10, that is, its apex 35 a passes through the central axis G of the spindle 10. Further, the radial width A ′ of the convex portion 35 is set to be longer than the radial width B ′ of the through hole 7 a of the inner ring 7.

  Also in the shape detection device 1 configured as described above, the inner ring 7 can be arranged coaxially with the spindle 1 by using the jig 30A through the steps described below.

  First, the spindle 10 and the jig 30A are arranged coaxially so that the apex 35a of the convex portion 35 of the jig 30A passes through the central axis G of the spindle 10. Here, the electromagnet 14 is not energized by the coil.

  Next, the inner ring 7 is placed on the electromagnet 14 so as to be positioned in the vicinity of the central axis G of the spindle 10. At this time, the central axis G ′ of the inner ring 7 and the central axis G of the spindle 10 do not necessarily coincide with each other. Further, as described above, since the electromagnet 14 is not energized with the coil, the inner ring 7 is released from the electromagnet 14.

  Subsequently, the jig 30 </ b> A is displaced toward one end in the axial direction until a part (tip) of the convex portion 35 enters the inside of the through hole 7 a of the inner ring 7 and the convex portion 35 contacts the inner ring 7. Here, when the central axis G ′ of the inner ring 7 and the central axis G of the spindle 10 do not coincide with each other, a part of the inner peripheral edge 7b of the inner ring 7 comes into contact with the convex portion 35 of the jig 30A (one piece per contact). To do).

  Further, when the jig 30A is displaced toward the one end side in the axial direction, the inner ring 7 is displaced along the inclined surface of the convex portion 35 by being pushed by the convex portion 35 of the jig 30A from the axial direction. The inner ring 7 has its entire inner peripheral edge 7b in contact with the convex portion 35 of the jig 30A, so that its radial displacement is restricted and is coaxial with the convex portion 35, that is, the central axis G of the inner ring 7 It arrange | positions so that 'may pass the vertex 35a of the convex part 35. FIG. As a result, the center axis G ′ of the inner ring 7 and the center axis G of the spindle 10 coincide, and the inner ring 7 and the spindle 10 are arranged coaxially.

  Thereafter, the electromagnet 14 is energized with a coil to fix the inner ring 7, and then the jig 30 </ b> A is retracted to the other axial end side, and the centering and fixing of the inner ring 7 with respect to the spindle 10 are finished. The spindle 10 and the inner ring 7 are integrally rotated by the motor 20 and the shape of the outer peripheral surface 7c (circumferential surface) of the inner ring 7 is detected by the detecting means 40 (see FIG. 1).

  As described above, according to the shape detection apparatus 1A of the present embodiment, the convex portion 35 of the one end surface 32 in the axial direction of the jig 30A has a conical shape and is coaxial with the spindle 10 and its radial width. A ′ is longer than the radial width B ′ of the through hole 7 a of the inner ring 7, and the inner ring 7 is supported by the spindle 10, and a part of the convex portion 35 of the jig 30 </ b> A enters the through hole 7 a. By being pushed from the axial direction as described above, the radial displacement is made so as to be coaxial with the convex portion 35, and it is arranged coaxially with the spindle 10. Therefore, the convex portion 35 can be easily centered with respect to the spindle 10 and workability is improved.

  In addition, as long as it has a through-hole penetrated to an axial direction and has a circumferential surface as a measuring object shape-measured by the shape detection apparatus 1A of this embodiment, it is not limited to the inner ring 7, For example, an outer ring etc. It may be.

  In addition, this invention is not limited to each embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.

  For example, in the above-described embodiment, the electromagnet 14 is exemplified as a fixing unit that can fix the measurement object (cylindrical roller 3 or the like). However, the fixing unit is configured such that the measurement object and the spindle 10 are fixed by the jigs 30 and 30A. The configuration is not limited as long as the measurement object is fixed when the coaxial is arranged. For example, a mechanism that physically chucks the measurement object may be used.

1, 1A shape detection device 3 cylindrical roller (measurement object)
3a Outer peripheral surface (circumferential surface)
3b Outer peripheral edge 5 Outer ring (object to be measured)
5a Outer peripheral surface (circumferential surface)
5b Inner surface (circumferential surface)
7 inner ring (object to be measured)
7a Through hole 7b Inner peripheral edge 7c Outer peripheral surface (circumferential surface)
10 Spindle (support means)
12 Axial direction other end surface 14 Electromagnet (fixing means)
20 Motor 30, 30A Jig 32 Axial end face 34 Recess 34a Vertex 35 Protrusion 35a Vertex 40 Detection means A, A ', B, B' Radial width G, G '

Claims (6)

A support means for supporting a measurement object having a circumferential surface from the axial direction;
A jig for coaxially arranging the measurement object with respect to the support means;
Detection means for detecting the shape of the circumferential surface of the measurement object;
A shape detection device comprising:
The jig is formed with a recess toward the other end side in the axial direction on one end surface in the axial direction facing the measurement object,
The concave portion is conical and coaxial with the support means, and its radial width is longer than the radial width of the measurement object,
The measurement object is displaced in the radial direction so as to be coaxial with the recess by being pushed by the recess of the jig from the axial direction while being supported by the support, and is coaxial with the support. A shape detection device characterized by being arranged. The support means is provided with a fixing means capable of fixing the measurement object on the other axial end surface that supports the measurement object,
The shape detection apparatus according to claim 1, wherein the fixing unit fixes the measurement object when the measurement object and the support unit are coaxially arranged by the jig. The shape detection apparatus according to claim 1, wherein the measurement object is a rolling element, an inner ring, or an outer ring of a rolling bearing. A support means for supporting a measurement object having a through-hole penetrating in the axial direction and having a circumferential surface from the axial direction;
A jig for coaxially arranging the measurement object with respect to the support means;
Detection means for detecting the shape of the circumferential surface of the measurement object;
A shape detection device comprising:
The jig is formed with a convex portion toward one end side in the axial direction on one end surface in the axial direction facing the measurement object,
The convex portion is conical and coaxial with the support means, and its radial width is longer than the radial width of the through hole of the measurement object,
The measurement object is coaxial with the projection by being pushed from the axial direction so that a part of the projection of the jig enters the inside of the through-hole while being supported by the support means. The shape detecting device is characterized in that it is displaced in the radial direction and arranged coaxially with the support means. The support means is provided with a fixing means capable of fixing the measurement object on the other axial end surface that supports the measurement object,
The shape detection apparatus according to claim 4, wherein the fixing unit fixes the measurement object when the measurement object and the support unit are coaxially arranged by the jig. The shape detection apparatus according to claim 4, wherein the measurement object is an inner ring or an outer ring of a rolling bearing.

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