JP5176650B2 - Plate thickness measuring device - Google Patents

Description

  The present invention relates to a plate thickness measuring device that measures the plate thickness of a ring-shaped member.

Patent Document 1 discloses an example of a plate thickness measuring device that measures the plate thickness of a ring-shaped member. In this plate thickness measuring apparatus, a ring-shaped member is set in a ring state on a plate-shaped base member. The base member includes a plurality of support members that contact the inner peripheral surface of the set ring-shaped member, a pressing member that contacts the outer peripheral surface of the ring-shaped member, and a pressing member that sandwiches the set ring-shaped member. A measuring element in contact with the measuring element and a displacement sensor for measuring the displacement of the measuring element are provided. The pressing member and the supporting member are provided so as to be movable with respect to the base member.
In this plate thickness measuring apparatus, the plate thickness of the ring-shaped member is measured by the detection value by the displacement sensor.

JP 11-295007 A

In the plate thickness measuring device of Patent Document 1, the operator needs to adjust the positions of the pressing member and the support member with respect to the set ring member. In addition, once the positions of the pressing member and the supporting member are adjusted, the pressing member and the supporting member are fixed to the base member. Therefore, when setting the ring member or removing the set ring member, The support member gets in the way. In particular, when the pressing member is in a fixed state, it is necessary to set a ring-shaped member between the pressing member and a measuring element abutting on the pressing member, or to remove the ring member set between the abutting members. is there. Therefore, in the plate thickness measuring device of Patent Document 1, it is difficult to efficiently perform the operation of measuring the plate thickness of the ring-shaped member.
The present invention was created to solve the above problems. That is, this invention provides the technique which can measure the plate | board thickness of a ring-shaped member efficiently.

The plate thickness measuring apparatus of the present invention measures the plate thickness of the set ring-shaped member. The plate thickness measuring device includes a plurality of support members, a reference member, a measuring element, a displacement sensor, a first movable body, a second movable body, and an actuator.
The plurality of support members abut on the inner peripheral surface of the set ring-shaped member and support the ring-shaped member in a ring state. The reference member has a reference surface that comes into contact with the inner peripheral surface of the set ring-shaped member. The measuring element is provided so as to be able to advance and retreat with respect to the reference surface of the reference member, and contacts the reference surface of the reference member with the set ring-shaped member interposed therebetween. The displacement sensor measures the displacement of the probe. A reference member is attached to the first movable body. The first movable body abuts the reference surface of the reference member on the inner peripheral surface of the set ring-shaped member, and a first set position for separating the reference surface of the reference member from the inner peripheral surface of the set ring-shaped member It is possible to move between the first measurement positions. A measuring element is attached to the second movable body. The second movable body is between a second set position for separating the probe from the outer peripheral surface of the set ring-shaped member and a second measurement position for bringing the probe into contact with the outer peripheral surface of the set ring-shaped member. Is movable. The actuator moves in one direction to move the first movable body to the first set position and move the second movable body to the second set position. The actuator moves in the other direction to move the first movable body to the first measurement position and move the second movable body to the second measurement position.

In the plate thickness measuring apparatus described above, when the actuator is operated in one direction, the reference member attached to the first movable body and the measuring element attached to the second movable body are separated from each other. Thereby, the operation | work which sets a ring-shaped member between a reference | standard member and a measuring element, or removes the set ring-shaped member can be performed easily. In the plate thickness measuring apparatus described above, when the actuator is operated in the other direction, the reference member and the measuring element come into contact with each other with the ring-shaped member interposed therebetween. Thereby, the plate | board thickness of the set ring-shaped member can be measured.
According to the plate thickness measuring apparatus described above, the plate thickness of the ring-shaped member can be measured efficiently.

It is preferable that the plate thickness measuring device described above is provided with a biasing unit that biases the first movable body toward the first measurement position.
According to this configuration, when the actuator is operated in one direction, the first movable body first moves to the first measurement position, and then the second movable body moves to the second measurement position. The first movable body is provided with a reference member serving as a reference for plate thickness measurement. By positioning the first movable body first, the reference member serving as a reference for thickness measurement is correctly positioned.

It is preferable that at least two of the plurality of support members are provided on the first movable body with the reference member interposed therebetween. In this case, it is preferable that the reference surfaces of the two support members and the reference member support the set ring-shaped member so as to bend in an arc shape.
According to this configuration, the set ring-shaped member can be supported in a state of being curved in an arc shape, and the plate thickness can be measured.

The plate thickness measuring apparatus described above further contacts the outer peripheral surface of the ring-shaped member set at a position facing any one of the plurality of support members, and rotates the ring-shaped member set by rotating in the circumferential direction. It is preferable that a rotor for feeding out is provided. The rotor is provided with a large-diameter portion that contacts the outer peripheral surface of the set ring-shaped member and a small-diameter portion that is separated from the outer peripheral surface of the set ring-shaped member along the circumferential direction. Is preferred.
When the plate thickness measuring device includes the above-described rotor, when the rotor rotates, the ring-shaped member extends along the circumferential direction when the large-diameter portion of the rotor is in contact with the outer peripheral surface of the ring-shaped member. Sent out. When the small-diameter portion of the rotor faces the ring-shaped member, the rotor does not contact the outer peripheral surface of the ring-shaped member, so that the ring-shaped member is not sent out in the circumferential direction. The ring-shaped member can be intermittently sent out in the circumferential direction simply by rotating the rotor. By measuring the plate thickness when the ring-shaped member is not fed in the circumferential direction, the plate thickness can be continuously measured at a plurality of locations of the ring-shaped member.

The plate thickness measuring device described above preferably further includes a second reference member, a second probe, a second displacement sensor, a third movable body, a fourth movable body, and a second actuator. . The third reference member has a reference surface that comes into contact with the inner peripheral surface of the set ring-shaped member. The second stylus is provided so as to be able to advance and retreat with respect to the reference surface of the second reference member, and contacts the reference surface of the second reference member with the set ring-shaped member interposed therebetween. The second displacement sensor measures the displacement of the second probe. A second reference member is attached to the third movable body. The third movable body has a third set position for separating the reference surface of the second reference member from the inner peripheral surface of the set ring-shaped member, and a reference of the second reference member on the inner peripheral surface of the set ring-shaped member. It is possible to move between the third measurement positions where the surfaces abut. A second probe is attached to the fourth movable body. The fourth movable body has a fourth set position for separating the second probe from the outer circumferential surface of the set ring-shaped member, and a fourth measurement for bringing the second probe into contact with the outer circumferential surface of the set ring-shaped member. It can move between positions. The second actuator moves in one direction to move the third movable body to the third set position and move the fourth movable body to the fourth set position. The second actuator moves in the other direction to move the third movable body to the third measurement position and move the fourth movable body to the fourth measurement position.
According to this configuration, the plate thickness of the ring-shaped member can be measured simultaneously at two locations, and the plate thickness at a plurality of locations of the ring-shaped member can be measured in a short time.

  According to the present invention, the plate thickness of the ring-shaped member can be measured efficiently.

The features of the embodiment described below will be summarized.
(Characteristic 1) The plate thickness measuring device includes urging means for urging the first frame toward the first measurement position and urging means for urging the measuring element toward the reference surface of the reference member. The urging force of the urging means for urging the first frame is larger than the urging force of the urging means for urging the measuring element.
(Feature 2) The plate thickness measuring device is attached to the second frame and includes a head portion that is biased toward the second measuring position. The head portion is formed with a clamp pin facing the reference pin attached to the first frame. When the second frame moves to the second measurement position, the clamp pin comes into contact with the set ring-shaped member.
(Feature 3) The actuator includes a cylinder and a piston rod that slides relative to the cylinder. The piston rod of the actuator is attached to the first frame. The cylinder of the actuator is attached to the second frame. When the piston rod moves in one direction with respect to the cylinder, the first frame moves to the first set position and the second frame moves to the second set position. When the piston rod moves in the other direction with respect to the cylinder, the first frame moves to the first measurement position and the second frame moves to the second measurement position.
(Characteristic 4) A first stopper for restricting the first frame from moving further toward the center of the ring-shaped member from the first set position is provided between the first frame and the work support base. A second stopper is provided between the second frame and the second stopper fixing member for restricting the second frame from further moving from the second set position to the distal side of the ring-shaped member. A fourth stopper is provided between the first frame and the fourth stopper fixing member for restricting the movement of the first frame from the first measurement position toward the centrifugal side of the ring-shaped member. A third stopper is provided between the second frame and the first frame to restrict the second frame from moving further from the second measurement position toward the center of the ring-shaped member. When the actuator is operated in one direction, the backward movement of the first frame (movement in the direction in which the first frame and the second frame are separated) is stopped by the first stopper, and the backward movement of the second frame is stopped by the second stopper. Stop by. When the actuator operates in the other direction, the forward movement of the first frame (movement in the direction in which the first frame and the second frame are close to each other) is stopped by the fourth stopper, and the forward movement of the second frame is stopped by the third stopper. Stop by.

FIG. 1 shows a plate thickness measuring system 1 for measuring the plate thickness of a set ring-shaped workpiece W. The plate thickness measuring system 1 is mainly used for measuring a plate thickness of a CVT loop for a continuously variable transmission (CVT). The plate thickness measurement system 1 includes a measurement base 2, a first plate thickness measurement device 1 a, a second plate thickness measurement device 1 b, and a rotor 3.
The measurement base 2 includes a fixed base 20, a support pin support base 22, a support pin 24 (an example of a support member), and a work support base 26.
The fixed base 20 has a substantially rectangular shape in plan view.
The support pin support base 22 is fixed to the central portion of the fixed base 20. The support pin support base 22 has a circular shape in plan view. The upper surface of the support pin support table 22 is set at a position higher than the upper surface of the fixed table 20.

The two support pins 24 are mounted on the support pin support base 22. Each support pin 24 is attached in the vicinity of the peripheral edge of the circular support pin support base 22. The two support pins 24 are arranged in the short direction of the fixed base 20 across the center of the circular support pin support base 22. The support pin 24 is rotatably attached to the support pin support base 22.
The work support 26 is attached to the support pin support 22. When viewed in plan, the work support 26 has a shape in which concave portions D are formed on two sides of a substantially square. The recess D is formed on two sides extending in the short direction of the fixed base 20. The work support 26 is formed so as to avoid the support pins 24 so as not to hinder the rotation of the support pins 24.

The first plate thickness measuring device 1a is disposed on one side in the longitudinal direction from the center of the fixed base 20 (right side in FIG. 1). The second plate thickness measuring device 1b is arranged on the other side (left side in FIG. 1) in the longitudinal direction from the center of the fixed base 20.
The configuration of the first plate thickness measuring device 1a and the second plate thickness measuring device 1b will be described. First, the configuration around the workpiece W to be set will be described.
The first plate thickness measuring device 1a includes two reference pins 43 (an example of a support member), a reference member 44, and a measuring element 55. The two reference pins 43 and the reference member 44 are located in one recess D of the work support base 26. The two reference pins 43 and the reference member 44 are arranged so as to be positioned on the inner peripheral side of the workpiece W when the ring-shaped workpiece W is set. As will be described in detail later, the two reference pins 43 and the reference member 44 are provided so as to be slidable along the radial direction of the workpiece W, and are in contact with the inner peripheral surface of the workpiece W (the centrifugal side of the workpiece W). ) And a side away from the inner peripheral surface of the workpiece W (the center side of the workpiece W). The measuring element 55 is arranged so as to be positioned on the outer peripheral side of the workpiece W when the ring-shaped workpiece W is set. As will be described in detail later, the measuring element 55 is provided so as to be slidable along the radial direction of the workpiece W, and moves to the side that contacts the outer peripheral surface of the workpiece W (the center side of the workpiece W). It is possible to move to the side away from the outer peripheral surface (the centrifugal side of the workpiece W).

  The second plate thickness measuring device 1b includes two reference pins 73 (an example of a support member), a reference member 74, and a measuring element 85. The two reference pins 73 and the reference member 74 are located in the other concave portion D of the work support base 26. The two reference pins 43 and the reference member 44 are arranged so as to be positioned on the inner peripheral side of the workpiece W when the ring-shaped workpiece W is set. Similarly to the first plate thickness measuring apparatus 1a, the two reference pins 73 and the reference member 74 are provided so as to be slidable along the radial direction of the workpiece W, and are in contact with the inner peripheral surface of the workpiece W ( Movement to the centrifugal side of the workpiece W and movement to the side away from the inner peripheral surface of the workpiece W (the center side of the workpiece W) are possible. The measuring element 85 is arranged so as to be positioned on the outer peripheral side of the workpiece W when the ring-shaped workpiece W is set. Similar to the first plate thickness measuring apparatus 1a, the measuring element 85 is provided so as to be slidable along the radial direction of the workpiece W, and is directed to the side that contacts the outer peripheral surface of the workpiece W (the center side of the workpiece W). The movement and the movement to the side away from the outer peripheral surface of the workpiece W (the centrifugal side of the workpiece W) are possible.

  With the above configuration, in the plate thickness measuring device 10, the outside of the two support pins 24, the outside of the reference pin 43 and the reference member 44 of the first plate thickness measuring device 1a, and the reference of the second plate thickness measuring device 1b. The ring-shaped workpiece W can be set on the workpiece support 26 in a ring state so as to pass outside the pin 73 and the reference member 74.

  The rotor 3 includes a large-diameter portion 32 having a large diameter from the center and a small-diameter portion 34 having a small diameter from the center along the circumferential direction in plan view. The rotor 3 is configured to be rotatable about a fan-shaped center point M formed by the large-diameter portion 32. The rotor 3 is disposed at a position where the large-diameter portion 32 abuts on the outer peripheral surface of the workpiece W set on the outside of one support pin 24. An elastic member 36 is attached to the surface of the large diameter portion 32 of the rotor 3. The rotor 3 sends out the workpiece W in the circumferential direction by rotating.

  Next, a detailed configuration of the first plate thickness measuring apparatus 1a will be described with reference to FIG. Since the second plate thickness measuring device 1b has the same configuration as the first plate thickness measuring device 1a, description thereof is omitted. The second plate thickness measuring device 1b is obtained by rotating the first plate thickness measuring device 1a to the opposite side of the workpiece W. The above-described reference pin 73 of the second plate thickness measuring device 1b in FIG. 1 corresponds to the reference pin 43 of the first plate thickness measuring device 1a. Further, the reference member 74 of the second plate thickness measuring device 1b corresponds to the reference member 44 of the first plate thickness measuring device 1a. Further, the measuring element 85 of the second plate thickness measuring apparatus 1b corresponds to the measuring element 55 of the first plate thickness measuring apparatus 1a.

The first plate thickness measuring device 1 a includes a first movable part 40, a second movable part 50, and an actuator 60.
The first movable unit 40 includes a first frame 45 (an example of a first movable body), a reference member 44, a reference pin 43, and a displacement sensor 46.
The first frame 45 is formed in a substantially C shape when seen in a plan view. In FIG. 2, the first frame 45 is hatched to the right.
A spring 41 is provided between one end side (the center side of the workpiece W) of the first frame 45 and the workpiece support base 26. The spring 41 biases the first frame 45 toward the centrifugal side of the workpiece W.
A reference member 44 is provided on the first frame 45. The reference member 44 includes a reference surface 44a that comes into contact with the inner peripheral surface of the set work W. The reference surface 44a is formed in a spherical shape along the inner peripheral surface of the workpiece W.
The first frame 45 is provided with two reference pins 43 (an example of a support member). The two reference pins 43 are arranged so as to sandwich the reference member 44. The reference pin 43 has a substantially cylindrical shape and extends from the back side to the near side in FIG. The tip of the reference pin 43 has a small diameter so that the workpiece W can be easily set. The reference pin 43 is provided at a position closer to the center side of the workpiece W than the reference surface 44 a of the reference member 44. Thus, when the workpiece W is set outside the reference surface 44a, the two reference pins 43 and the reference member 44 are arranged on the inner peripheral surface side of the workpiece W. The two reference pins 43 and the reference surface 44a of the reference member 44 support the workpiece W so as to be curved in an arc shape.

  A displacement sensor 46 is attached to the other end side of the first frame 45 (the centrifugal side of the workpiece W and the opposite side of the reference member 44). The main body of the displacement sensor 46 is attached to the outside of the substantially C-shape formed by the first frame 45. The displacement sensor 46 includes a shaft 46a. The shaft 46 a extends through the first frame 45 in the center direction of the workpiece W. The shaft 46a penetrates the first frame 45 in a state in which it can expand and contract. The shaft 46a is connected to a measuring element 55 which will be described in detail later.

The first frame 45 is supported so as to be slidable in the longitudinal direction of the fixed base 20. The first frame 45 slides to the center side of the workpiece W (left side in FIG. 2) and the centrifugal side of the workpiece W (right side in FIG. 2). The movement of the first frame 45 toward the center side of the workpiece W is restricted by the stopper S1. The stopper S <b> 1 is attached between the first frame 45 and the work support base 26. Further, the movement of the first frame 45 to the centrifugal side (right side in FIG. 2) of the workpiece W is restricted by the stopper S4. The stopper S <b> 4 is attached between the first frame 45 and a stopper fixing member 27 formed on the fixing base 20.
Thereby, the 1st movable part 40 provided with the 1st flame | frame 45 can be slid to the longitudinal direction of the fixed base 20 within the range regulated by the stopper S1 and the stopper S4.

The second movable unit 50 includes a second frame 52 (an example of a second movable body) and a measuring element 55.
The second frame 52 is formed in a convex shape when seen in a plan view. In FIG. 2, the second frame is indicated by a diagonal line rising to the right.
The second frame 52 is arranged so that the protruding portion on the letter faces the center side of the workpiece W.
A measuring element 55 is provided on the second frame 52 so that the longitudinal direction is aligned with the direction in which the protrusions extend. The measuring element 55 is slidably movable with respect to the second frame 52. A spring 56 is provided between the second frame 52 and the measuring element 55. The spring 56 is disposed at an intermediate position in the longitudinal direction of the measuring element 55. A measuring element 55 is urged toward the center of the workpiece W by a spring 56. The tip P (end on the workpiece W side) of the measuring element 55 protrudes from the second frame 52 in plan view. The other end of the probe 55 is connected to the shaft 46a of the displacement sensor 46 described above. When the position of the first movable portion 40 is fixed and the probe 55 is displaced in the center direction of the workpiece W, the shaft 46a protruding from the displacement sensor 46 extends. When the probe 55 is displaced in the centrifugal direction of the workpiece W, the shaft 46a contracts.

  The second frame 52 is provided with two clamp pins 51 across the tip P of the measuring element 55. The clamp pin 51 is attached to the head portion 52a. The head portion 52a and the second frame 52 are connected by two shafts. The two shafts are arranged with the measuring element 55 interposed therebetween. The two shafts are aligned in parallel with the measuring element 55 and the longitudinal direction thereof aligned. The two shafts penetrate the second frame 52 so as to be slidable. Two springs 53 are provided between the head portion 52 a and the second frame 52. The two springs 53 are arranged with the measuring element 55 interposed therebetween. The two springs 53 are aligned in parallel with the measuring element 55 aligned with the longitudinal direction thereof. One end of the two springs 53 is attached to the head portion 52 a, and the other end of the two springs 53 is attached to the second frame 52. The head portion 52a is biased toward the center side of the workpiece W by the spring 53b.

The second frame 52 is supported so as to be slidable in the longitudinal direction of the fixed base 20. The second frame 52 slides to the center side of the workpiece W (left side in FIG. 2) and the distal side of the workpiece W (right side in FIG. 2). The movement of the second frame 52 toward the center side of the workpiece W is restricted by the stopper S3. The stopper S <b> 3 is attached between the second frame 52 and the first frame 45. Further, the movement of the second frame 52 to the centrifugal side (right side in FIG. 2) of the workpiece W is restricted by the stopper S2. The stopper S <b> 2 is attached between the second frame 52 and the stopper fixing member 28 formed on the fixing base 20.
Thereby, the 2nd movable part 50 provided with the 2nd frame 52 can be slid and moved to the longitudinal direction of the fixed stand 20 within the range regulated by the stopper S3 and the stopper S2.

  Note that the biasing force of the spring 41 provided between the first frame 45 and the workpiece support 26 described above is the second biasing force of the spring 56 provided between the second frame 52 and the measuring element 55. The biasing force is larger than the biasing force obtained by adding the biasing forces of the two springs 53 provided between the frame 52 and the head portion 52a.

  The actuator 60 includes a cylinder 62 and a piston rod 64. The piston rod 64 is connected to the first frame 45. The cylinder 62 is connected to the second frame 52. Both the first frame 45 and the second frame 52 are slidably provided on the fixed base 20. As shown in FIG. 2, when the piston rod 64 advances from the bottom side of the cylinder 62, the first frame 45 moves to the center side of the workpiece W and stops by the stopper S <b> 1, and the second frame 52 centrifuges the workpiece W. It moves to the side and stops by the stopper S2. This position of the first frame 45 is referred to as a set position of the first frame 45. This position of the second frame 52 is called a set position of the second frame 52. When both the first frame 45 and the second frame 52 are stopped at the set position, the reference surface 44a of the reference member 44 provided on the first frame 45 and the measuring element provided on the second frame 52 The front end P of 55 is separated. The workpiece W can be set between the reference surface 44a and the tip P of the probe 55.

  Further, as shown in FIG. 3, when the piston rod 64 is retracted to the bottom side of the cylinder 62, the first frame 45 is moved to the centrifugal side of the workpiece W and stopped by the stopper S4, and the second frame 52 is moved to the workpiece W. Is stopped by the stopper S3. This position of the first frame 45 is referred to as a measurement position of the first frame 45. This position of the second frame 52 is referred to as a measurement position of the second frame 52. When both the first frame 45 and the second frame 52 are stopped at the measurement position, the reference surface 44a of the reference member 44 provided on the first frame 45 and the measuring element provided on the second frame 52 The workpiece W can be sandwiched by the tip P of 55. At this time, the reference surface 44 a comes into contact with the inner peripheral surface of the workpiece W. Further, the tip P of the measuring element 55 comes into contact with the outer peripheral surface of the workpiece W.

Next, an operation in which the plate thickness measuring system 1 measures the plate thickness of the ring-shaped workpiece W in a ring state will be described with reference to FIGS. 1 to 4.
Here, as shown in FIG. 3, a case where the plate thickness is measured at six measurement points Q1, Q2, Q3, Q4, Q5, and Q6 will be described. Measurement points Q1, Q2, Q3, Q4, Q5, and Q6 are set at equal intervals on the circumference of the workpiece W.

First, at time t0 in FIG. 4, the plate thickness measuring system 1 is in a state in which the first plate thickness measuring device 1a can set the workpiece W shown in FIG. In the actuator 60, the piston rod 64 is advanced (projected) with respect to the cylinder 62. The first frame 45 is stopped by the stopper S <b> 1 and is arranged at the set position moved to the center side of the workpiece W. The second frame 52 is stopped by the stopper S <b> 2 and is disposed at the set position moved to the centrifugal side of the workpiece W. In this state, the reference surface 44a of the reference member 44 provided on the first frame 45 and the tip P of the measuring element 55 provided on the second frame 52 are separated from each other. The workpiece W can be easily set between the reference surface 44a and the tip P of the probe 55.
At the same time, the second plate thickness measuring device 1b is in a state in which the workpiece W can be set in the same manner as the first plate thickness measuring device 1a shown in FIG.

  The workpiece W is set between time t0 and time t1 in FIG. The workpiece W passes outside the two support pins 24, outside the reference pin 43 and the reference member 44 of the first plate thickness measuring device 1a, and outside the reference pin and the reference member of the second plate thickness measuring device 1b. Set in the ring state. At this time, the measurement point Q1 shown in FIG. 3 is adjacent to the reference surface 44a of the reference member 44. At this time, the measurement point Q4 shown in FIG. 3 is adjacent to the reference surface of the reference member 74 of the second plate thickness measuring apparatus 1b.

  Next, the actuator 60 is operated so that the piston rod 64 moves backward (accommodates) with respect to the cylinder 62 between time t1 and time t2. Accordingly, the first frame 45 moves to the centrifugal side of the workpiece W, and the second frame 52 moves to the center side of the workpiece W. Eventually, the first frame 45 is stopped by the stopper S4 and is arranged at the measurement position moved to the centrifugal side of the workpiece W. Further, the second frame 52 is stopped by the stopper S3 and is arranged at the measurement position moved to the center side of the workpiece W. At this time, due to the biasing force of the spring 41, the first frame 45 first reaches the measurement position. By moving the first frame 45 and the second frame 52 to the respective measurement positions, the reference surface 44a of the reference member 44 comes into contact with the inner peripheral surface of the set work W, and the tip P of the measuring element 55 is set. It contacts the outer peripheral surface of the workpiece W. That is, the measuring element 55 comes into contact with the reference surface 44a of the reference member 44 with the measurement point Q1 of the set work W interposed therebetween. The measuring element 55 comes into contact with the workpiece W with a constant pressing force by the urging force of the spring 56. At this time, similarly in the second plate thickness measuring apparatus 1b, the measuring element abuts on the reference surface of the reference member 74 with the measurement point Q4 of the workpiece W interposed therebetween.

  Next, the plate thickness at the measurement point Q1 is measured by the first plate thickness measuring device 1a during the period Ta from the time t2 to the time t3. As shown in FIG. 3, the first plate thickness measuring device 1 a is in a state in which the plate thickness of the workpiece W can be measured. The position of the probe is detected by the displacement sensor 46, and the thickness of the workpiece W at the measurement point Q1 is measured. In the plate thickness measurement system 1, the zero point of the probe 55 is stored in advance. That is, the tip P of the measuring element 55 is brought into contact with the reference surface 44a in a state where the workpiece W is not set, and the measured value of the displacement sensor 46 at that time is stored as a zero point. The difference between the position of the tip P of the probe 55 measured during the period Ta and the stored zero point position is the plate thickness at the measurement point Q1 of the workpiece W. At this time, the plate thickness at the measurement point Q4 of the workpiece W can be similarly measured by the second plate thickness measuring device 1b.

  Next, between time t3 and time t4, the actuator 60 is operated so that the piston rod 64 moves forward (protrudes) with respect to the cylinder 62. That is, as shown in FIG. 2, the first frame 45 and the second frame are moved to their respective set positions. Thereby, the reference surface 44a of the reference member 44 and the measuring element 55 are separated from the workpiece W. At this time, similarly in the second plate thickness measuring apparatus 1b, the actuator is operated to separate the reference surface of the measuring reference member 74 and the measuring element 85 from the workpiece W.

  Next, the work W is sent out in the circumferential direction by the rotor 3 between time t4 and time t5. As shown in FIG. 3, when the rotor 3 rotates counterclockwise, the workpiece W is sent out clockwise in the circumferential direction. The rotor 3 rotates about the center point M, and the elastic member 36 of the large-diameter portion 32 of the rotor 3 rotates while contacting the outer peripheral surface of the work W. Therefore, the work W rotates clockwise in the circumferential direction. Sent out. Since the elastic member 36 is formed on the outer peripheral surface of the large-diameter portion 32, the workpiece W is difficult to slip. Further, the work W is hardly damaged. When the circumferential angle is set, the workpiece W for 60 degrees is sent clockwise, and the next measurement point Q2 is set on the reference surface 44a. At this time, similarly in the second plate thickness measuring apparatus 1b, the next measurement point Q5 of the workpiece W is set on the reference plane of the second plate thickness measuring apparatus 1b.

  When the small diameter portion 34 faces the workpiece W, the rotor 3 is not sent out because the rotor 3 and the workpiece W are separated from each other. The rotor 3 continues to rotate from time t1 to time 4 described above, but the small diameter portion 34 faces the workpiece W during this period. The rotor 3 intermittently feeds the workpiece W in the circumferential direction by simply rotating. The thickness of the workpiece W is measured when the workpiece W is not fed in the circumferential direction.

  Similarly, between time t5 and time t6, the actuator 60 is operated again, and the measuring element 55 is brought into contact with the outer peripheral surface of the measurement point Q2 of the workpiece W. The measuring element 55 contacts the reference surface 44a of the reference member 44 with the measurement point Q2 of the workpiece W interposed therebetween. At this time, similarly in the second plate thickness measuring apparatus 1b, the actuator is operated again to bring the measuring element into contact with the outer peripheral surface of the measurement point Q5 of the workpiece W. The measuring element comes into contact with the reference surface of the reference member 74 with the measurement point Q5 of the workpiece W interposed therebetween.

  In the period Tb from the time t6 to the time t7, the plate thickness at the measurement point Q2 of the workpiece W is measured by the first plate thickness measuring device 1a. The first plate thickness measuring device 1a is again ready to measure the plate thickness of the workpiece W (see FIG. 3). At this time, the plate thickness at the measurement point Q5 of the workpiece W is similarly measured in the second plate thickness measuring device 1b. Similarly, the second plate thickness measuring device 1b is in a state in which the plate thickness of the workpiece W can be measured.

Between time t7 and time t8, the actuator 60 is operated again, and the probe 55 is moved backward. The first plate thickness measuring device 1a is again ready to set the workpiece shown in FIG. At this time, similarly in the second plate thickness measuring apparatus 1b, the actuator 60 is operated again and the measuring element is moved backward. The second plate thickness measuring device 1b is again ready to set the workpiece shown in FIG.
Between time t8 and time t9, the work W is sent out in the circumferential direction by the rotor 3, and the next measurement point Q3 is set in the first plate thickness measuring device 1a. At this time, the next measurement point Q6 is also set in the second plate thickness measuring apparatus 1b.
Between time t9 and time t10, the actuator 60 is operated again, and the probe 55 is brought into contact with the outer peripheral surface of the workpiece W at the measurement point Q3. The measuring element 55 contacts the reference surface 44a of the reference member 44 with the measurement point Q3 of the workpiece W interposed therebetween. At this time, similarly in the second plate thickness measuring apparatus 1b, the actuator is operated again to bring the measuring element into contact with the outer peripheral surface of the workpiece W at the measurement point Q6. The probe contacts the reference surface of the reference member with the measurement point Q6 of the workpiece W interposed therebetween.
In a period Tc from time t10 to time t11, the plate thickness at the measurement point Q3 of the workpiece W is measured by the first plate thickness measuring device 1a. The first plate thickness measuring device 1a is again ready to measure the thickness of the workpiece W shown in FIG. At this time, the plate thickness at the measurement point Q6 of the workpiece W is similarly measured in the second plate thickness measuring apparatus 1b. Similarly, the second plate thickness measuring device 1b is in a state in which the plate thickness of the workpiece W can be measured.
Between time t11 and time t12, the actuator 60 is operated again, and the probe 55 is moved backward. The first plate thickness measuring device 1a is again ready to set the workpiece shown in FIG. At this time, similarly in the second plate thickness measuring apparatus 1b, the actuator is operated again to move the measuring element backward. Similarly, the second plate thickness measuring device 1b is in a state where a workpiece can be set.
Thus, the measurement of the plate thickness at the measurement points Q1, Q2, Q3, Q4, Q5, and Q6 of the workpiece W is completed.
After time t12, the workpiece W is taken out.

  In the plate thickness measurement system 1 of the present embodiment, when the actuator 60 is operated in one direction, the reference member 44 attached to the first frame 45 and the probe 55 attached to the second frame 52 are mutually connected. Separate. Thereby, the operation | work which sets the ring-shaped workpiece | work W between the reference member 44 and the measuring element 55, or removes the set workpiece | work W can be performed easily. In the plate thickness measurement system 1, when the actuator 60 is moved in the other direction, the reference member 44 and the measuring element 55 come into contact with each other with the workpiece W interposed therebetween. Thereby, the plate | board thickness of the set workpiece | work W can be measured. According to the plate thickness measuring system 1, the work W can be set easily, and the plate thickness of the workpiece W can be measured efficiently.

  The plate thickness measurement system 1 of the present embodiment is provided with a spring 41 that biases the first frame 45 toward the measurement position. In the plate thickness measurement system 1, when the actuator 60 is operated in one direction, the first frame 45 first moves to the measurement position, and then the second frame 52 moves to the measurement position. The first frame 45 is provided with a reference member 44 serving as a reference for plate thickness measurement. By positioning the first frame 45 first, the reference member 44 is correctly positioned.

  In the first frame 45 of this embodiment, two reference pins 43 are provided with a reference member 44 interposed therebetween. The two reference pins 43 and the reference surface 44a of the reference member 44 support the set work W so as to be bent in an arc shape. With this configuration, the set workpiece W can be supported in a state of being curved in an arc shape, and the plate thickness can be measured.

  The plate thickness measuring system 1 according to the present embodiment includes a rotor 3 that feeds the workpiece W in the circumferential direction. The rotor 3 is provided with a large-diameter portion 32 that contacts the outer peripheral surface of the set work W and a small-diameter portion 34 that is separated from the outer peripheral surface of the set work W along the circumferential direction. . With this structure, when the large-diameter portion 32 of the rotor 3 is in contact with the outer peripheral surface of the work W, the work W is sent out along the circumferential direction by the rotation of the rotor 3. When the small-diameter portion 34 of the rotor 3 faces the work W, the work 3 is not sent out in the circumferential direction because the rotor 3 does not contact the outer peripheral surface of the work W. The workpiece W can be intermittently sent out in the circumferential direction simply by continuously rotating the rotor 3. By measuring the plate thickness at the plate thickness measurement point when the workpiece W is not fed in the circumferential direction, the plate thickness can be continuously measured at a plurality of locations of the workpiece W.

  The plate thickness measuring system 1 according to the present embodiment includes a first plate thickness measuring device 1a and a second plate thickness measuring device 1b. The plate thickness of the ring-shaped workpiece W can be measured at two locations at the same time, and the plate thickness at a plurality of locations of the workpiece W can be measured in a short time.

  In the present embodiment, the case where the first frame 45 is connected to the piston rod 64 side of the actuator 60 and the second frame 52 is connected to the cylinder 62 side of the actuator 60 has been described. The first frame 45 may be connected to the cylinder 62 side of the actuator 60 and the second frame 52 may be connected to the piston rod 64 of the actuator 60.

  In the present embodiment, the case where the plate thickness measuring system 1 includes the first plate thickness measuring device 1a and the second plate thickness measuring device 1b has been described. However, the plate thickness measuring system measures three or more plate thicknesses. An apparatus may be provided.

  In the plate thickness measurement system 1 according to the present embodiment, the measurement base 2 includes two support pins 24. The ring-shaped workpiece W includes two support pins 24, two reference pins 43 and a reference member 44 of the first plate thickness measuring device 1a, and two reference pins and a reference member of the second plate thickness measuring device 1b. Thus, the case of supporting in a state close to a perfect circle has been described. The supporting member for supporting the workpiece W may be two or more including the various pins described above. The workpiece W does not necessarily have to be supported in a state close to a perfect circle.

  Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings can achieve a plurality of purposes at the same time, and has technical utility by achieving one of the purposes.

1 is a plan view of a plate thickness measuring system 1. FIG. It is a figure explaining the detail of the 1st board thickness measuring apparatus 1a. It is a figure explaining the detail of the 1st board thickness measuring apparatus 1a. It is a time chart figure which shows the procedure which measures the plate | board thickness of the set ring-shaped workpiece | work W. FIG.

Explanation of symbols

1: Plate thickness measuring system 1a: First plate thickness measuring device 1b: Second plate thickness measuring device 2: Measuring base 3: Rotor 20: Fixed base 22: Support pin support base 24: Support pin 26: Work support base 27, 28: Stopper fixing member 32: Large diameter portion 34: Small diameter portion 36: Elastic member 40: First movable portions 41, 53, 56: Spring 43: Reference pin 44: Reference member 44a: Reference surface 45: First frame 46: Displacement sensor 46a: Shaft 50: Second movable part 51: Clamp pin 52: Second frame 52a: Head part 55: Measuring element 60: Actuator 62: Cylinder 64: Piston rod D: Concavity P: End of measuring element 55 Part S1, S2, S3, S4: Stopper W: Workpiece

Claims (5)

It is a plate thickness measuring device that measures the plate thickness of the set ring-shaped member,
A plurality of support members that contact the inner peripheral surface of the set ring-shaped member and support the ring-shaped member in a ring state;
A reference member having a reference surface in contact with the inner peripheral surface of the set ring-shaped member;
A measuring element that is provided so as to be capable of advancing and retreating with respect to the reference surface of the reference member, and that contacts the reference surface of the reference member across the set ring-shaped member;
A displacement sensor for measuring the displacement of the probe;
The reference member is attached, a first set position for separating the reference surface of the reference member from the inner peripheral surface of the set ring-shaped member, and the reference member on the inner peripheral surface of the set ring-shaped member A first movable body that is movable between a first measurement position that abuts the reference surface;
A second set position where the measuring element is attached and the measuring element is separated from the outer peripheral surface of the set ring-shaped member, and a second set position where the measuring element abuts on the outer peripheral surface of the set ring-shaped member. A second movable body movable between measurement positions;
The first movable body is moved to the first set position by operating in one direction, the second movable body is moved to the second set position, and the first movable body is moved to the first set position by operating in the other direction. An actuator for moving the second movable body to the second measurement position while moving the second movable body to the measurement position;
A plate thickness measuring device comprising:   2. The plate thickness measuring apparatus according to claim 1, further comprising an urging unit that urges the first movable body toward the first measurement position. In the first movable body, at least two of the plurality of support members are provided with the reference member interposed therebetween,
3. The plate thickness measuring apparatus according to claim 1, wherein the two support members and the reference surface of the reference member support the set ring-shaped member so as to bend in an arc shape. A rotor that abuts the outer peripheral surface of the ring-shaped member set at a position facing any of the plurality of support members, and sends the ring-shaped member set by rotating in the circumferential direction;
The rotor is provided with a large-diameter portion that contacts the outer peripheral surface of the set ring-shaped member and a small-diameter portion that is separated from the outer peripheral surface of the set ring-shaped member along the circumferential direction. The plate | board thickness measuring apparatus of any one of Claim 1 to 3 characterized by these. A second reference member having a reference surface in contact with the inner peripheral surface of the set ring-shaped member;
A second measuring element that is provided so as to be capable of advancing and retreating with respect to the reference surface of the second reference member, and that contacts the reference surface of the second reference member with the set ring-shaped member interposed therebetween;
A second displacement sensor for measuring the displacement of the second probe;
The second reference member is attached to a third set position for separating the reference surface of the second reference member from the inner peripheral surface of the set ring-shaped member, and an inner peripheral surface of the set ring-shaped member. A third movable body movable between a third measurement position where the reference surface of the second reference member contacts,
The second probe is attached, and a fourth set position for separating the second probe from the outer circumferential surface of the set ring-shaped member, and the second probe on the outer circumferential surface of the set ring-shaped member. A fourth movable body movable between a fourth measurement position for contacting
The third movable body is moved to the third set position by operating in one direction, the fourth movable body is moved to the fourth set position, and the third movable body is moved to the third set position by operating in the other direction. A second actuator for moving to the measurement position and moving the fourth movable body to the fourth measurement position;
The plate thickness measuring apparatus according to any one of claims 1 to 4, further comprising:

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