JP2017146188A - Measuring apparatus and measuring method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a measuring apparatus capable of easily measuring the outer and inner diameters of a cylindrical member with high accuracy.SOLUTION: A measuring apparatus 100 comprises: a receiving tool 11 held in the state of aligning a rolling bearing 200 to the measurement center of a single measurement zone; outer diameter gauges 12a and 12b having outer diameter probes 12a-1 and 12b-1 for measuring the outer diameter of the rolling bearing held in the measurement zone by the receiving tool; inner diameter gauges 13a and 13b having inner diameter probes 13a-1 and 13b-1 for measuring the inner diameter; actuators 15a and 15b for contacting and separating the outer diameter probes to the outer periphery of the rolling bearing held in the measurement zone; and an actuator 16 for inserting and removing the inner diameter probes to the inner periphery.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a measuring apparatus and a measuring method, and more particularly, to a measuring apparatus and a measuring method for measuring an outer diameter and an inner diameter of a cylindrical member.

  Different measuring tools may be used for measuring the outer diameter and inner diameter of a cylindrical member such as a rolling bearing. For example, when measuring the inner diameter, the measurer uses a measuring instrument such as a cylinder gauge or an air gauge, and when measuring the outer diameter, the measurer repositions the member to be measured on the surface plate and measures it. There was a case.

  Also, when measuring the outer diameter and the inner diameter using a single measuring device, the measuring device may be set again for the outer diameter and the inner diameter, that is, the measurer may measure in two steps. It was.

  For example, in Japanese Patent Application Laid-Open No. 2011-232173 (Patent Document 1), when using one measuring device having an outer diameter measuring element and an inner diameter measuring element and measuring the outer diameter, the outer diameter measuring element is measured. When measuring by contacting the outer diameter of the member and measuring the inner diameter, a method is disclosed in which the measuring element is switched to the inner diameter measuring element and brought into contact with the inner diameter of the member.

JP 2011-232173 A

  As described above, in the conventional measuring method, in order to measure both the outer diameter and the inner diameter with one measuring device, two steps such as switching the measuring element of the measuring device are required, which is troublesome. is there. In addition, when the measurer manually measures using a measuring tool such as a dial gauge, there is a possibility that the measurement accuracy varies by the measurer.

  An object of one aspect of the present invention is to provide a measuring apparatus and method that can measure the outer diameter and inner diameter of a cylindrical member with high accuracy by an easy operation.

According to an embodiment, the measuring device is a measuring device that measures the outer diameter and inner diameter of the cylindrical member, and the cylindrical member is aligned with respect to the measurement center of a single measurement zone. An outer diameter measuring tool having an outer diameter probe for measuring the outer diameter of the cylindrical member held in the measurement zone by the jig, and the cylindrical member held in the measurement zone by the jig An inner diameter measuring tool having an inner diameter measuring element for measuring the inner diameter of the tube, a first actuator for contacting and separating the outer diameter measuring element with respect to the outer periphery of the cylindrical member held in the measuring zone, and held in the measuring zone And a second actuator that inserts and removes the inner diameter measuring element with respect to the inner periphery of the cylindrical member.
With this configuration, the outer diameter and the inner diameter are automatically measured by the measuring device only by positioning the cylindrical member that is the object of measurement of the outer diameter and the inner diameter with respect to the jig. Therefore, by using this measuring apparatus, the outer diameter and inner diameter can be measured easily and with high accuracy.

Preferably, the measuring apparatus relatively moves at least the inner diameter measuring tool and the jig among the measuring tools to the measurement zone and the retreat zone for attaching and detaching the cylindrical member to the jig. An actuator is further provided.
Thereby, attachment and detachment of the cylindrical member with respect to a jig | tool becomes easy.

Preferably, the position at which the outer diameter probe contacts and separates from the outer periphery of the cylindrical member held in the measurement zone, and the position at which the inner diameter probe moves into and out of the inner periphery of the cylindrical member held in the measurement zone Is on the same straight line in the radial direction of the cylindrical member held in the measurement zone.
Thereby, even if a pressing force is generated on the cylindrical member by the outer diameter measuring element and the inner diameter measuring element, the pressing forces of both cancel each other, and the displacement of the cylindrical member can be suppressed.

Preferably, the first actuator further includes a mechanism for moving the outer diameter measuring element so that the outer diameter measuring tool can measure the outer diameter of the cylindrical member at a plurality of positions in the central axis direction of the cylindrical member.
Thereby, the cylindrical degree of the outer periphery of a cylindrical member is further detectable.

Preferably, the second actuator further includes a mechanism for moving the inner diameter measuring element so that the inner diameter measuring tool can measure the inner diameter of the cylindrical member at a plurality of positions in the central axis direction of the cylindrical member.
Thereby, the cylindricity of the inner periphery of the tubular member can be further detected.

Preferably, the measuring device is configured so that the outer diameter measuring tool can measure the outer diameter of the cylindrical member at a plurality of positions in the circumferential direction of the cylindrical member, and the jig is attached together with the cylindrical member around the central axis of the cylindrical member. A rotating mechanism for rotating is further provided.
Thereby, the roundness of the outer periphery of the cylindrical member can be further detected.

Preferably, the measuring apparatus rotates the jig together with the cylindrical member about the central axis of the cylindrical member so that the inner diameter measuring tool can measure the inner diameter of the cylindrical member at a plurality of positions in the circumferential direction of the cylindrical member. A rotation mechanism is further provided.
Thereby, the roundness of the inner periphery of the cylindrical member can be further detected.

Preferably, at least a part of the measurement time of the outer diameter of the cylindrical member by the outer diameter measurement tool and the measurement time of the inner diameter of the cylindrical member by the inner diameter measurement tool overlap.
Thereby, an outer diameter and an inner diameter can be measured in a short time.

According to another embodiment, the measuring method is a method of measuring the outer diameter and inner diameter of the cylindrical member using a measuring device, and the measuring device is an outer diameter for measuring the outer diameter of the cylindrical member. A state in which the cylindrical member is aligned with respect to the measurement center of a single measurement zone, including an outer diameter measuring tool having a diameter measuring element and an inner diameter measuring tool having an inner diameter measuring element for measuring an inner diameter. The step of holding the cylindrical member with the jig, the step of contacting and separating the outer diameter measuring element with respect to the outer diameter of the cylindrical member held in the measurement zone by the jig, and the holding of the cylindrical member by the jig Inserting and removing the inner diameter measuring element from the inner periphery of the cylindrical member.
With this configuration, the outer diameter and the inner diameter are automatically measured by the measuring device only by positioning the cylindrical member that is the object of measurement of the outer diameter and the inner diameter with respect to the jig. Therefore, the outer diameter and inner diameter can be measured easily and with high accuracy using a measuring device.

  According to the present invention, the outer diameter and inner diameter of the cylindrical member can be measured easily and with high accuracy.

It is a front view of the measuring apparatus concerning this Embodiment. It is a side view of the measuring apparatus concerning this Embodiment. It is a figure for demonstrating a mode that a rolling bearing is mounted with respect to the receiving jig of a measuring apparatus. It is a figure for demonstrating the measurement zone and evacuation zone in a measuring apparatus. It is a flowchart showing the measuring method of the outer diameter and inner diameter of a rolling bearing in a measuring device.

  Hereinafter, preferred embodiments will be described with reference to the drawings. In the following description, the same parts and components are denoted by the same reference numerals. Their names and functions are also the same. Therefore, these descriptions will not be repeated.

<Device configuration>
1 and 2 are a front view and a side view of the measuring apparatus 100 according to the present embodiment. Measuring apparatus 100 according to the present embodiment measures the outer diameter and inner diameter of a hollow cylindrical member (cylindrical member). The cylindrical member is, for example, a rolling bearing 200. When the member to be measured is the rolling bearing 200, the measuring apparatus 100 measures the outer diameter of the outer ring and the inner diameter of the inner ring of the rolling bearing 200.

  Referring to FIGS. 1 and 2, measuring apparatus 100 is a jig that can hold rolling bearing 200, and has receiving jig 11 that is a mounting table for rolling bearing 200. The receiving jig 11 is configured such that the rolling bearing 200 can be placed on the upper surface thereof.

  The receiving jig 11 is movable by actuators 14a and 14b. Actuators 14a and 14b are also collectively referred to as actuator 14. The actuator 14a (third actuator) is a slide mechanism that moves (slides) the receiving jig 11 in the front direction and the opposite direction, which are represented by double-sided arrows e in FIG. The actuator 14b is a rotation mechanism that rotates the receiving jig 11 in the rotation direction represented by the arrow f in FIG. 2 with the center OA (FIG. 3) set in the receiving jig 11 as the rotation center. .

The measuring apparatus 100 further includes outer diameter gauges 12a and 12b which are outer diameter measuring tools each having outer diameter measuring elements 12a-1 and 12b-1 which are measuring elements for measuring the outer diameter of the rolling bearing 200, and And inner diameter gauges 13a and 13b which are inner diameter measuring tools each having inner diameter measuring elements 13a-1 and 13b-1 which are measuring elements for measuring the inner diameter. The outer diameter gauges 12a and 12b are also collectively referred to as an outer diameter gauge 12, and the inner diameter gauges 13a and 13b are also collectively referred to as an inner diameter gauge 13.
The outer diameter gauge 12 measures the outer diameter by bringing the outer diameter measuring elements 12a-1 and 12b-1 into direct contact with the outer periphery of the rolling bearing 200 that is a member to be measured. The inner diameter gauge 13 measures the inner diameter by bringing the inner diameter measuring elements 13a-1 and 13b-1 into direct contact with the inner circumference of the rolling bearing 200, which is a member to be measured. The outer diameter gauge 12 and the inner diameter gauge 13 are, for example, dial gauges.

A common central axis MB is set for the outer diameter gauge 12 and the inner diameter gauge 13. The outer diameter gauges 12a and 12b are symmetrical with respect to the central axis MB, and are arranged at positions where the outer circumferences of the rolling bearings 200 that are in contact with each other are on the same straight line. Each of the inner diameter gauges 13a and 13b is also symmetric with respect to the central axis MB, and is disposed at a position where the positions on the inner circumference of the rolling bearing 200 that are in contact with each other are on the same straight line. With this arrangement, when the rolling bearing 200 is installed at a position where the rotation axis MA (FIG. 3) coincides with the center axis MB (hereinafter also referred to as a measurement position), the outer diameter gauges 12a and 12b and the inner diameter The gauges 13a and 13b are positioned on the same straight line in the radial direction of the rolling bearing 200, respectively.
Preferably, the outer diameter gauge 12 and the inner diameter gauge 13 are arranged on the same straight line with the central axis MB interposed therebetween. By arranging in this way, when the rolling bearing 200 is installed at the measurement position, all of the outer diameter gauges 12a and 12b and the inner diameter gauges 13a and 13b are on the same straight line in the radial direction of the rolling bearing 200. Will be located.

  The outer diameter gauges 12a-1 and 12b-1 of the outer diameter gauges 12a and 12b are movable by actuators 15a and 15b, respectively. Actuators 15a and 15b are also collectively referred to as actuator 15 (first actuator). The actuator 15 moves the outer diameter measuring elements 12a-1 and 12b-1 in a direction approaching and separating from the central axis MB, which is represented by a double-sided arrow b in FIG. That is, the actuator 15 brings the outer diameter measuring elements 12a-1 and 12b-1 into contact with and away from the outer periphery of the rolling bearing 200 at the measurement position. The actuator 15 further includes a mechanism for moving the outer diameter measuring elements 12a-1 and 12b-1 in the vertical direction represented by the double-sided arrow d in FIG.

  The inner diameter gauges 13a-1 and 13b-1 of the inner diameter gauges 13a and 13b are also movable by the actuator 16 (second actuator) and the actuators 17a and 17b. Actuators 17a and 17b are also collectively referred to as actuator 17. The actuator 16 moves the inner diameter measuring elements 13a-1 and 13b-1 in the vertical direction represented by the double-sided arrow a in FIGS. That is, the actuator 16 inserts and removes the inner diameter measuring elements 13a-1 and 13b-1 with respect to the inner periphery of the rolling bearing 200 at the measurement position. In addition, the actuators 17a and 17b move the inner diameter measuring elements 13a-1 and 13b-1 in a direction approaching and separating from the central axis MB, which is represented by a double-sided arrow c in FIG.

  Preferably, the actuators 14, 15, 16, and 17 are all air-driven actuators. Thereby, it is possible to suppress the thermal influence on the rolling bearing 200 without bringing a heat source close to the rolling bearing 200 that is a member to be measured. When the rolling bearing 200 is formed of a material that is easily affected by heat, deformation due to heat can be prevented.

  FIG. 3 is a view for explaining a state in which the rolling bearing 200 is placed on the receiving jig 11. With reference to FIG. 3, the receiving jig 11 has a shape adapted to the size of the rolling bearing 200. Specifically, the receiving jig 11 has a convex portion 11a that can be fitted to the inner circumference of the inner ring 201 of the rolling bearing 200, whereby the receiving jig 11 rolls with its position relative to the receiving jig 11 fixed. The bearing 200 can be held. By setting the rolling bearing 200 on the receiving jig 11 using the convex portion 11a, the rolling bearing 200 is fixed at a position where the rotation axis MA passes through the center OA of the receiving jig 11. That is, the center axis MA of the rolling bearing 200 passes through the center OA of the receiving jig 11 and is orthogonal to the mounting surface of the receiving jig 11.

The actuator 14a slides the receiving jig 11 in the direction of arrow e (see FIG. 2), and moves the receiving jig 11 to the measurement zone and the retreat zone. FIG. 4 is a view for explaining the measurement zone and the evacuation zone in the measurement apparatus 100 and is a view seen from above the measurement apparatus 100. For ease of explanation, only the receiving jig 11 in the configuration of the measuring apparatus 100 is shown in FIG.
Specifically, referring to FIG. 4, the receiving jig 11 is moved between the measurement zone and the retreat zone by the actuator 14a. The measurement zone is a circular region located on the central axis MB where the center O is set in common to the outer diameter gauge 12 and the inner diameter gauge 13, and the receiving jig 11 is the center OA is the center O of the measurement zone. The rolling bearing 200 placed on the receiving jig 11 using the convex portion 11a becomes the measurement position. That is, the receiving jig 11 can hold the rolling bearing 200 in a state of being aligned with the central axis MB that is the measurement center. In the following description, the position of the receiving jig 11 is also referred to as a measurement position.
The evacuation zone may be an area different from the measurement zone. As an example, the evacuation zone is a circular region in front of the measurement zone as viewed from the front as shown in FIG. The retreat zone is an area that is a position for attaching and detaching the rolling bearing 200 to the receiving jig 11. In the following description, the position of the receiving jig 11 is also referred to as a placement position.

  When the receiving jig 11 on which the rolling bearing 200 is mounted is moved from the mounting position to the measurement position by the actuator 14a, the rotating shaft MA of the rolling bearing 200 mounted on the receiving jig 11 is connected to the outer diameter gauge 12 and the inner diameter. It coincides with the central axis MB of the gauge 13. That is, the rolling bearing 200 is the measurement position. Thus, when measuring the outer diameter and the inner diameter using the measuring apparatus 100, the rolling bearing 200, which is a member to be measured, is set (mounted) on the jig 11 using the convex portion 11a of the receiving jig 11. Simply by placing it on the outer diameter gauge 12 and the inner diameter gauge 13 which are measuring tools for the outer diameter and the inner diameter. Therefore, positioning can be performed with higher accuracy than when the measurer visually positions.

  The actuators 15a and 15b bring the outer diameter measuring elements 12a-1 and 12b-1 at positions not in contact with the outer circumference of the outer ring of the rolling bearing 200 at the measurement position into contact with the outer circumference of the outer ring 202, respectively. The distance between the outer diameter measuring elements 12a-1 and 12b-1 when the outer diameter measuring elements 12a-1 and 12b-1 come into contact with the outer periphery of the outer ring 202 of the rolling bearing 200 is the diameter of the outer ring 202 of the rolling bearing 200, that is, The outer diameter. Therefore, it can be said that the position where the outer diameter measuring elements 12 a-1 and 12 b-1 are in contact with the outer periphery of the outer ring 202 of the rolling bearing 200 is a position for measuring the outer diameter of the rolling bearing 200.

Similarly, the actuators 17a and 17b bring the inner diameter measuring elements 13a-1 and 13b-1 that are not in contact with the inner circumference of the inner ring 201 of the rolling bearing 200 at the measurement position into contact with the inner circumference of the inner ring 201, respectively. . The distance between the inner diameter measuring elements 13a-1 and 13b-1 when the inner diameter measuring elements 13a-1 and 13b-1 come into contact with the inner circumference of the inner ring 201 of the rolling bearing 200 is the diameter of the inner ring 201 of the rolling bearing 200, that is, the inner diameter. It becomes. Therefore, it can be said that the position where the inner diameter measuring elements 13 a-1 and 13 b-1 are in contact with the inner circumference of the inner ring 201 of the rolling bearing 200 is a position for measuring the inner diameter of the rolling bearing 200.
Positions at which the actuators 15, 16, and 17 measure the outer diameter and the inner diameter of the outer diameter measuring elements 12a-1, 12b-1 and the inner diameter measuring elements 13a-1, 13b-1, respectively. This movement is also referred to as a measurement operation.

Preferably, the actuators 15 and 16 respectively move the outer diameter measuring elements 12a-1 and 12b-1 and the inner diameter measuring elements 13a-1 and 13b-1 in a direction parallel to the central axis MB. Specifically, the actuators 15a and 15b respectively have the outer diameter measuring elements 12a-1 and 12b-1 at a plurality of positions within a width (height) in a direction parallel to the central axis MA of the rolling bearing 200 at the measurement position. In addition, the outer diameter measuring elements 12a-1 and 12b-1 are moved at the respective positions such that the positions where the outer diameter measuring elements 12a-1 and 12b-1 come into contact with the rolling bearing 200 are on the same straight line in the radial direction. The actuator 15 performs a measurement operation at the moved position. Thereby, the outer diameter of the rolling bearing 200 can be measured at a plurality of positions in the direction of the central axis MA.
Similarly, the actuator 16 moves the inner diameter measuring elements 13a-1 and 13b-1 to a plurality of positions within a width (height) in a direction parallel to the central axis MA of the rolling bearing 200 at the measurement position. The inner diameter measuring elements 13a-1 and 13b-1 are moved so that the positions where they come into contact with the rolling bearing 200 are on the same straight line in the radial direction. The actuator 17 performs a measurement operation at the moved position. Thereby, the inner diameter of the rolling bearing 200 can be measured at a plurality of positions in the direction of the central axis MA.

  More preferably, in the actuators 15, 16, and 17, the positions at which the outer diameter measuring elements 12 a-1 and 12 b-1 and the inner diameter measuring elements 13 a-1 and 13 b-1 are in contact with the rolling bearing 200 are on the same straight line. While maintaining the positional relationship, the outer diameter measuring elements 12a-1, 12b-1 and the inner diameter measuring elements 13a-1, 13b-1 are moved in a direction parallel to the central axis MB, respectively. Thus, when measuring the outer diameter and the inner diameter at a plurality of positions in the direction of the central axis MA of the rolling bearing 200, the outer diameter measuring elements 12a-1, 12b-1 and the inner diameter measuring elements 13a-1, 13b-1 are respectively measured. The position in contact with the rolling bearing 200 can be in the same plane.

  The actuator 14b rotates the receiving jig 11 at the measurement position around the center OA (arrow f in FIG. 2). As a result, the rolling bearing 200 at the measurement position where the rotation axis MA coincides with the central axis MB of the outer diameter gauge 12 and the inner diameter gauge 13 by being placed on the receiving jig 11, the central axis MB is set as the rotation axis. Rotate as Before and after the receiving jig 11 rotates, the measuring operations of the outer diameter gauge 12 and the inner diameter gauge 13 are executed by the actuators 15 and 16, respectively, so that the outer diameter and the outer diameter at a plurality of positions in the circumferential direction of the rolling bearing 200 are reduced. The inner diameter is measured.

  Preferably, when the receiving jig 11 is moved from the retreat zone to the measurement zone by the actuator 14a, the actuator 15 and the actuator 16 are the outer diameter measuring elements 12a-1, 12b-1 and the inner diameter measuring elements 13a-1, 13b, respectively. -1 is moved above the rolling bearing 200 at the measurement position, for example. Thereby, the contact with each measuring element when the rolling bearing 200 is set to the measurement position can be prevented.

The measuring device 100 is connected to a PC (personal computer) 300 as a control device. The PC 300 controls driving of the actuators 14, 15, 16, and 17. Further, the PC 300 receives input of signals indicating the positions of the actuators 14, 15, 16, and 17 from the actuators 14, 15, 16, and 17.
The PC 300 can specify the positions of the outer diameter measuring elements 12a-1, 12b-1 and the inner diameter measuring elements 13a-1, 13b-1 based on signals from the actuators 15, 17. And PC300 can acquire the outer periphery of the outer ring | wheel of the rolling bearing 200, ie, an outer diameter, based on the position of the specified outer diameter measuring element 12a-1, 12b-1. Further, the PC 300 can obtain the inner circumference, that is, the inner diameter of the inner ring of the rolling bearing 200, based on the specified positions of the inner diameter measuring elements 13a-1 and 13b-1.

<Measurement operation>
FIG. 5 is a flowchart showing a measuring operation in the measuring apparatus 100, that is, a measuring method of the outer diameter and the inner diameter of the rolling bearing 200 in the measuring apparatus 100. The operation shown in the flowchart of FIG. 5 is a control process in which a CPU (Central Processing Unit) (not shown) included in the PC 300 connected to the measurement apparatus 100 is stored in a memory such as a ROM (Read Only Memory). This is realized by reading and executing the program.
The operation shown in the flowchart of FIG. 5 is started when a measurement start instruction such as pressing a start button (not shown) is given to the PC 300 by a measurer or the like.

  Referring to FIG. 5, when the measurement is started, PC 300 controls actuator 14a to move receiving jig 11 to the retreat zone, and accepts a set of rolling bearings 200 as a measurement target member as a mounting position. (Step S101). When the rolling bearing 200 is set, the PC 300 controls the actuator 14a to move the receiving jig 11 to the measurement zone to be a measurement position, and moves the rolling bearing 200 to the measurement position (step S103).

Thereafter, the PC 300 controls the actuators 15a and 15b to move the outer diameter measuring elements 12a-1 and 12b-1 to positions for measuring the outer diameter (step S105), and measures the outer diameter of the rolling bearing 200. (Step S107). Further, the PC 300 controls the actuators 16 and 17 to move the inner diameter measuring elements 13a-1 and 13b-1 to positions for measuring the inner diameter (step S109), and measures the inner diameter of the rolling bearing 200 (step S111). ).
Preferably, the PC 300 simultaneously performs at least a part of the outer diameter measuring operation in steps S105 to S107 and the inner diameter measuring operation in steps S109 to S111. That is, preferably, at least a part of the measurement time for the outer diameter and the measurement time for the inner diameter in the PC 300 overlaps. More preferably, the PC 300 performs the outer diameter measurement and the inner diameter measurement simultaneously. Thereby, the time required for measuring the outer diameter and inner diameter of the rolling bearing 200 can be shortened.

Preferably, the measuring apparatus 100 measures the outer diameter and the inner diameter at a plurality of positions in the central axis MA direction of the rolling bearing 200, that is, at a plurality of positions in the width (height) direction of the rolling bearing 200. Therefore, when the PC 300 finishes measuring the outer diameter and the inner diameter at a certain position in the direction of the central axis MA of the rolling bearing 200 and measures at another position in the direction of the central axis MA (NO in step S113), the above steps are performed. The operations from S105 to S111 are repeated. That is, the PC 300 moves the outer diameter measuring elements 12a-1, 12b-1 and the inner diameter measuring elements 13a-1, 13b-1 to the specified next measuring positions, and sets the outer diameter and inner diameter at the respective positions. taking measurement.
Preferably, the measuring apparatus 100 measures the outer diameter and the inner diameter at a plurality of positions in the rotational direction of the rolling bearing 200. Therefore, the PC 300 has finished measuring the outer diameter and the inner diameter at a certain position defined in the rotation direction with the central axis MA of the rolling bearing 200 as the rotation axis, and measures at another position in the rotation direction (step S113). In step S117, the PC 300 rotates the rolling bearing 200 placed on the receiving jig 11 by a specified amount of rotation by controlling the actuator 14b. And PC300 repeats operation | movement of said step S105-S111. That is, the PC 300 moves the outer diameter measuring elements 12a-1, 12b-1 and the inner diameter measuring elements 13a-1, 13b-1 to the specified next measuring positions, and sets the outer diameter and inner diameter at the respective positions. taking measurement.

  When the measurement of the outer diameter and the inner diameter at the specified position is completed, the PC 300 ends a series of measurement operations. When the measurement is completed, the PC 300 may move the receiving jig 11 to the retreat zone by controlling the actuator 14a to set the mounting position. When the measurement is completed, the PC 300 may output the measurement result by displaying it on a display (not shown).

<Other example 1>
In the above description, the outer diameter gauge 12 and the inner diameter gauge 13 are respectively the outer diameter measuring elements 12a-1, 12b-1 and the inner diameter measuring elements 13a-1, 13b-1 as the rolling bearings 200 that are the measurement targets. Although it is a measuring tool for measuring the outer diameter and inner diameter by direct contact, the outer diameter and inner diameter may be measured without contact with the rolling bearing 200. For example, an air gauge that measures the outer diameter and the inner diameter by blowing compressed air onto the rolling bearing 200 may be used. Further, for example, a gap sensor that can measure an outer diameter and an inner diameter using infrared rays, ultrasonic waves, or the like may be used. In this case, the PC 300 is connected to these sensors and receives input of sensor signals, and calculates the outer diameter and inner diameter of the rolling bearing 200 based on the sensor signals.

<Other example 2>
In the above description, the receiving jig 11 is moved between the measurement zone and the retreat zone by the actuator 14a. However, the receiving jig 11 may be moved relative to the measurement zone and the retreat zone. That is, the receiving jig 11 may be fixed, and another configuration, that is, a configuration in which at least the inner diameter measuring elements 13 a-1 and 13 b-1 are in contact with and away from the receiving jig 11 may be used.

<Effect of Embodiment>
Since the measuring apparatus 100 has the above-described configuration, the positioning of the outer diameter gauge 12 and the inner diameter gauge 13 is automatically performed only by positioning the cylindrical member such as the rolling bearing 200 with respect to the jig 11. The outer diameter and inner diameter are automatically measured. Therefore, by using this measuring apparatus 100, the outer diameter and inner diameter of a cylindrical member such as the rolling bearing 200 can be easily and accurately measured. That is, it is not necessary to reposition the rolling bearing 200 in each of the measurement of the outer diameter and the inner diameter, and only the positioning with respect to the receiving jig 11 is required, so that the measurement can be easily performed. Further, since the outer diameter and the inner diameter are automatically measured after the rolling bearing 200 is placed on the jig 11, the outer diameter and the inner diameter are measured with higher accuracy than the measurement person measures.

  In the measuring apparatus 100, the outer diameter and the inner diameter are measured on the same straight line in the radial direction of the rolling bearing 200 at the measurement position. When the outer diameter gauge 12 and the inner diameter gauge 13 are measuring tools having a probe for measuring the outer diameter and the inner diameter by making direct contact as described above, there is a possibility that a pressing force is generated in the rolling bearing 200 by the contact. There is also. However, even when a pressing force is generated, the outer diameter gauge 12 and the inner diameter gauge 13 maintain such a positional relationship and measure the outer diameter and the inner diameter, respectively. It is possible to prevent displacement and deformation of 200.

  In the measuring apparatus 100, at least one of the outer diameter and the inner diameter is measured at a plurality of positions in the central axis MA direction of the rolling bearing 200 at the measurement position, that is, in the width (height) direction. The cylindricity of the outer circumference and / or inner circumference can be detected. Alternatively, the PC 300 determines the outer diameter of the rolling bearing 200 from statistical values such as an average value and a median value of measurement results at a plurality of positions in the central axis MA direction, that is, the width (height) direction of the rolling bearing 200 at the measurement position. And / or an inner diameter may be obtained. By doing in this way, the measurement precision of an outer diameter and an internal diameter can be improved.

  Further, in the measuring apparatus 100, at least one of the outer diameter and the inner diameter is measured at a plurality of positions in the circumferential direction of the rolling bearing 200 at the measurement position, so that a perfect circle on the outer circumference and / or inner circumference of the rolling bearing 200 is measured. The degree can be detected. Alternatively, the PC 300 may obtain the outer diameter and / or inner diameter of the rolling bearing 200 from statistical values such as an average value and a median value of the measurement results at each of a plurality of circumferential positions of the rolling bearing 200 at the measurement position. . By doing in this way, the measurement precision of an outer diameter and an internal diameter can be improved.

  In the measuring apparatus 100, the outer diameter and the inner diameter are measured in a short time, preferably by measuring the outer diameter and the inner diameter at the same time so that at least a part of the measurement process of the outer diameter and the inner diameter overlaps. Can do.

[Supplement]
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  11 receiving jig, 11a convex portion, 12, 12a, 12b outer diameter gauge, 12a-1, 12b-1 outer diameter gauge, 13, 13a, 13b inner diameter gauge, 13a-1, 13b-1 inner diameter gauge, 14 Actuator (third actuator), 15 Actuator (first actuator), 16 Actuator (second actuator), 17 1 Actuator, 00 Measuring device, 200 Rolling bearing, 300 PC

Claims (9)

A measuring device for measuring an outer diameter and an inner diameter of a cylindrical member,
A jig for holding the cylindrical member in alignment with the measurement center of a single measurement zone;
An outer diameter measuring tool having an outer diameter probe for measuring the outer diameter of the cylindrical member held in the measurement zone by the jig;
An inner diameter measuring tool having an inner diameter probe for measuring the inner diameter of the cylindrical member held in the measurement zone by the jig;
A first actuator for moving the outer diameter measuring element toward and away from the outer periphery of the cylindrical member held in the measurement zone;
And a second actuator that inserts and removes the inner diameter measuring element with respect to the inner periphery of the cylindrical member held in the measurement zone.   A third actuator for relatively moving at least the inner diameter measuring tool and the jig among the measuring tools to the measurement zone and a retreat zone for attaching and detaching the tubular member to and from the jig; The measuring device according to claim 1 further provided.   The inner diameter measuring element is inserted into and extracted from the position where the outer diameter measuring element contacts and separates from the outer periphery of the cylindrical member held in the measurement zone and the inner periphery of the cylindrical member held in the measuring zone. The measurement device according to claim 1 or 2, wherein the position is on the same straight line in the radial direction of the cylindrical member held in the measurement zone.   The first actuator further includes a mechanism for moving the outer diameter measuring element so that the outer diameter measuring tool can measure the outer diameter of the cylindrical member at a plurality of positions in the central axis direction of the cylindrical member. The measuring apparatus of any one of Claims 1-3.   The said 2nd actuator is further equipped with the mechanism in which the said internal diameter measuring tool moves the said internal diameter measuring element so that the internal diameter of the said cylindrical member can be measured in the several position of the center axis direction of the said cylindrical member. The measuring apparatus of any one of -3.   The jig is rotated together with the cylindrical member about the central axis of the cylindrical member so that the outer diameter measuring instrument can measure the outer diameter of the cylindrical member at a plurality of positions in the circumferential direction of the cylindrical member. The measuring apparatus according to claim 1, further comprising a rotating mechanism to be operated.   Rotation that rotates the jig together with the cylindrical member about the central axis of the cylindrical member so that the inner diameter measuring tool can measure the inner diameter of the cylindrical member at a plurality of positions in the circumferential direction of the cylindrical member The measuring apparatus according to claim 1, further comprising a mechanism.   The measurement time of the outer diameter of the cylindrical member by the outer diameter measuring tool and at least a part of the measurement time of the inner diameter of the cylindrical member by the inner diameter measuring tool overlap each other. The measuring apparatus according to item 1. A method of measuring the outer diameter and inner diameter of a cylindrical member using a measuring device,
The measuring device includes an outer diameter measuring tool having an outer diameter measuring element for measuring the outer diameter of the cylindrical member, and an inner diameter measuring tool having an inner diameter measuring element for measuring the inner diameter,
Holding the cylindrical member with a jig in a state where the cylindrical member is aligned with respect to the measurement center of a single measurement zone;
Contacting and separating the outer diameter probe with respect to the outer diameter of the cylindrical member held in the measurement zone by the jig;
Inserting and removing the inner diameter measuring element with respect to the inner periphery of the cylindrical member held in the measurement zone by the jig.

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