JPH06258037A - Outer diameter measuring equipment for work - Google Patents

Abstract

PURPOSE:To provide a highly accurate and reliable outer diameter measuring equipment in which overall size can be reduced significantly while allowing transfer of a large number of objects on a conveyor and each object can be measured efficiently in a short time. CONSTITUTION:The inventive equipment comprises a conveyor for transferring objects W, e.g. works, and a laser measuring instrument 5 for irradiating the object W transferred on the conveyor with a laser beam from radial direction and measuring the outer diametral dimension thereof. The transfer conveyor is provided with a jig 15 for holding the work W such that the axis of the object W intersects the transferring direction of the conveyor perpendicularly. Light projecting section 6 and light receiving section 7 of the laser measuring instrument 5 are disposed vertically on the transferring side of conveyor so that the object W on the jig 15 is irradiated with laser light vertically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer diameter measuring device for a workpiece or the like for measuring the outer diameter of an object to be measured such as a workpiece while being conveyed by a conveyor.

[0002]

2. Description of the Related Art In a centerless grinding machine, for example
As disclosed in Japanese Patent Laid-Open No. 48926, an outer diameter dimension measuring device in which a laser measuring device is arranged in the middle of a conveyor is used, and while the workpiece after grinding is conveyed by the conveyor, a radial direction is applied to the workpiece. Laser irradiation is performed to continuously measure the outer diameter dimensions online, and the dimensions of all workpieces are controlled.

In this conventional outer diameter dimension measuring apparatus, a large number of drive rollers having grooves on the outer periphery are arranged in series to form a conveyer conveyor, and on the left and right sides of this conveyer conveyor, a light projecting section of a laser measuring device is provided. And a light receiving part are arranged, and the workpiece after grinding is conveyed in the axial direction by the drive roller group,
Laser light is emitted from the light emitting portion to the light receiving portion of the laser measuring device in the left-right direction through a gap between two adjacent driving rollers.

[0004]

In the conventional outer diameter dimension measuring apparatus, the workpieces are conveyed by the conveying conveyor in the axial direction thereof, so that a large proportion of one workpiece occupies the conveying conveyor. Therefore, there is a drawback that the entire length of the transport conveyor becomes very long. Therefore, between the transfer position where the workpiece after grinding is transferred onto the transfer conveyor and the dimension measurement position, a predetermined number of workpieces are transferred on the transfer conveyor, but In order to secure the number of the workpieces to be placed, there is a drawback that the length of the transfer conveyor becomes longer and the area occupied by the transfer conveyor becomes larger.

The transfer speed of the transfer conveyor is determined by the relationship with the grinding cycle of the centerless grinding machine. Since the work is transferred in the axial direction, it is 1 when the work passes the dimension measurement position. The passage time per piece becomes long, and there is a problem in shortening the measurement time and improving efficiency. Furthermore,
Conventionally, the light emitting unit and the light receiving unit of the laser measuring instrument are arranged on both the left and right sides of the conveyor, so it is necessary to secure an area for installing the light emitting unit and the light receiving unit on both the left and right sides of the conveyor. In addition, the area occupied by the laser measuring device becomes wider. As a result, there is a drawback in that the entire apparatus becomes extremely large and the size cannot be reduced in combination with the lengthening of the conveyor.

In view of such conventional problems, the present invention is capable of mounting a large number of objects to be measured on a conveyor, but
It is possible to significantly reduce the size of the entire device, to efficiently measure each object to be measured in a short time, and to provide an outer diameter dimension measuring device for workpieces and the like that can perform highly accurate and highly reliable measurement. To aim.

[0007]

The present invention according to claim 1 is a conveyor 4 for conveying an object to be measured W such as a workpiece.
And the object to be measured W transported by the transport conveyor 4,
In a device for measuring the outer diameter of a workpiece or the like equipped with a laser measuring device 5 for measuring the outer diameter by irradiating a laser beam L from the radial direction, the axis of the object W is conveyed to the conveying conveyor 4. A jig 15 for holding the object to be measured W is provided in a lateral direction orthogonal to the conveying direction of the conveyor 4, and the object to be measured W on the jig 15 is irradiated with a laser beam L in the vertical direction. The laser measuring device above and below the transport side of the transport conveyor 4.
The light emitting unit 6 and the light receiving unit 7 of 5 are arranged.

According to a second aspect of the present invention, in the first aspect of the invention, the jig 15 is stopped at a dimension measuring position B where the laser measuring instrument 5 measures the dimension of the object W to be measured. It was done.

According to a third aspect of the present invention, in addition to the first or second aspect of the invention, an endless rotating body 9 for placing and carrying the jig 15 on the transport conveyor 4 is provided, and the dimension measurement position is also provided. B is provided with jig positioning means 24 for lifting and positioning the jig 15 from the endless rotating body 9.

The present invention according to claim 4 provides the invention according to claims 1 and 2.
Alternatively, in the invention described in 3, the laser measuring device 5 is provided on a movable frame 38 movably supported in the axial direction of the object to be measured W, and a driving means for reciprocating the movable frame 38 in the axial direction. 47 is provided.

[0011]

According to the present invention as set forth in claim 1, the transport conveyor 4
The object W to be measured is placed laterally on the jig 15 and the object W to be measured is conveyed by the conveyor 4 in the radial direction. Therefore, it is possible to place a large number of objects to be measured W on the conveyor 4.

When the object W to be measured reaches the dimension measuring position B, it is moved vertically between the light projecting section 6 and the light receiving section 7 of the laser measuring instrument 5 with respect to the object W to be measured on the jig 15. The size is measured by irradiating the laser beam L. Therefore, the conveyor 4 and the laser measuring device 5 are vertically overlapped with each other, so that the entire apparatus is downsized.

According to the second aspect of the present invention, the jig 15 is stopped at the dimension measuring position B to measure the dimension of the object W to be measured. Therefore, the occurrence of measurement error is reduced.

According to the third aspect of the present invention, the jig 15 is placed on the endless rotary body 9 of the conveyor 4, and the object W is placed on the jig 15 and conveyed. When the jig 15 reaches the dimension measurement position B, the jig 15 is lifted from the endless rotary body 9 and positioned by the jig positioning means 24, and then the dimension of the object W to be measured is measured by the laser measuring device 5.

That is, with the object W to be measured placed, the jig 15 is stopped at the dimension measuring position B, and the jig positioning means 24 positions and measures. Therefore, the measurement can be performed with high accuracy, the positioning accuracy of the object to be measured W is improved, and the positioning can be performed while the endless rotating body 9 is rotated.

In the present invention according to claim 4, the driving means 47
The movable frame 38 is reciprocally driven by the laser measuring device 5 provided on the movable frame 38 in the axial direction of the object W to be measured, while the laser measuring device 5 measures the dimension of the object W at multiple points. . Then, the dimension of the object W to be measured is determined from each measured value.

[0017]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a plan view showing an outline of an outer diameter dimension measuring device, and FIG. 2 is an enlarged sectional view taken along line XX of FIG. In FIGS. 1 and 2, W is a workpiece, 1 is a centerless grinder for grinding the workpiece W, and has a grinding wheel 2 and an adjusting wheel 3. Reference numeral 4 denotes a conveyor that conveys the workpiece W in the direction of arrow a, which is arranged on the side of the centerless grinding machine 1. Then, between the conveyor 4 and the centerless grinding machine 1, the workpiece W before grinding, which is conveyed by the conveyor 4, is supplied to the centerless grinding machine 1, and the workpiece W after grinding is conveyed by the conveyor 4. A transfer device (not shown) for returning to the upper position is provided at the transfer position A.

Reference numeral 5 denotes a laser measuring device, which is, as shown in FIG.
At the dimension measurement position B, a light projecting unit 6 and a light receiving unit 7 are provided above and below the carrying side of the carrying conveyor 4, and the ground workpiece W carried by the carrying conveyor 4 is irradiated with laser light from its radial direction. The outer diameter is measured by irradiating L. Reference numeral 8 denotes an air blower, which blows dry air onto the ground workpiece W conveyed by the conveyor 4 to remove deposits such as grinding fluid attached to the workpiece W.

As shown in FIG. 2, the transport conveyor 4 includes a pair of left and right endless rotating chains 9 and a large number of rollers 1 rotatably supported on the left and right sides of each of the endless rotating chains 9.
It is composed of a free flow conveyor equipped with 0 and 11. Each endless rotating chain 9 has conveyor frames 12 on the left and right sides.
It is slidably supported by a chain guide rail 13 fixed to the outer side of each conveyor frame 12 and has an outer roller 11
A guide plate 14 for restricting lifting of the endless rotation chain 9 is attached via the.

On the carrying side of the carrying conveyor 4, a large number of jigs 15 for holding the respective works W are mounted so that the axis of the works W is in the lateral direction orthogonal to the carrying direction, that is, in the left-right direction. It is placed. Each jig 15 is, as shown in FIG. 3 to FIG.
A rectangular base plate 16, a pair of left and right receiving members 17, 18 fixed on the base plate 16, a regulation plate 19 fixed on one of the left and right end sides of the base plate 16, and a left and right side of the base plate 16. It comprises a roller 21 pivotally supported by a pin 20 on the other end side.
The receiving member 18 is made of synthetic resin.

The base plate 16 is mounted on the roller 10 inside the endless rotation chain 9 between the pair of left and right guide plates 14, and the base plate 16 is provided on both front and rear sides of the receiving members 17 and 18.
The laser light L emitted from the light projecting unit 6 to the workpiece W is received by the light receiving unit.
Slots 22 and 23 are formed parallel to the workpiece W so as to pass to the 7 side. The distance L ₁ between the inner wall surfaces of the pair of long holes 22 and 23 is smaller than the minimum diameter of the workpiece W to be measured, and the distance L ₂ between the outer wall surfaces is larger than the maximum diameter. It is large.

On the upper surface of each of the receiving members 17 and 18, a workpiece V is detachably mounted so that its axis is in the lateral direction.
Grooves 17a and 18a are formed respectively. The control plate 19 is the work W
One end surfaces of the workpiece W in the axial direction are brought into contact with each other to regulate the position of the workpiece W placed on the receiving members 17 and 18 in the axial direction. In this embodiment, since the workpiece W is the crankshaft, the weight portion W ₁ of the workpiece W is also brought into contact with the side surface of the receiving member 17, and the position of the workpiece W is adjusted by the regulating plate 19 and the receiving member 17. I'm supposed to decide.

Dimension measurement position B on the transport side of the transport conveyor 4
The jig positioning means 24 for lifting and positioning the jig 15 from the endless rotating chain 9 and the workpiece W on the jig 15.
A confirmation switch 25 for confirming the presence or absence of is provided.
The jig positioning means 24 includes a positioning member 27 for lightly pressing and fixing the jig 15 to one guide plate 14 side, and an endless rotation chain 9 for the jig 15 fixed by the positioning member 27.
And a push-up member 26 that pushes up the roller 10 from above.

The push-up member 26 is arranged between the pair of left and right endless rotation chains 9 and has a plurality of protrusions 28 on its upper surface. The push-up member 26 is vertically movable by a push-up cylinder 29, and the push-up cylinder 29 is attached to a support frame 30 that supports the conveyor frame 12. The push-up member 26 and the like are arranged so as to be displaced in the transport direction of the transport conveyor 4 so as not to interfere with the light receiving unit 7.

The positioning member 27 is formed in a V shape so as to press the base plate 16 toward the one guide plate 14 side via the roller 21. This positioning member 27 is a pressing cylinder.
A pressing cylinder 31 is supported by a guide 31 so that the pressing cylinder 31 can move in and out in the left-right direction, and the pressing cylinder 31 is mounted on the other guide plate 14.

The confirmation switch 25 detects the workpiece W on the jig 15 when the jig 15 transported by the transport conveyor 4 reaches the dimension measuring position B, and pushes up the cylinder 29, the pressing cylinder 31, etc. For operating the workpiece W
The light emitting section 32 and the light receiving section 33 are arranged so as to face each other in the axial direction of the
It is composed of and. The light emitting unit 32 is attached to the bracket 34 on the one guide plate 14, and the light receiving unit 33 is attached to the bracket 35 on the other guide plate 14.

At the upper end of the bracket 34, a regulation plate for the jig 15 is provided.
A stopper 36 projecting above 19 is provided, and when the jig 15 is pushed up, the regulation plate 19 comes into contact with the stopper 36 to limit the amount of pushing up. Further, a hole 37 is formed in the restriction plate 19 of the jig 15 so that the light from the light projecting section 32 passes to the light receiving section 33 side.

Projector 6 and receiver 7 of laser measuring instrument 5
As shown in FIGS. 7 to 9, they are mounted on the tip of the movable frame 38 so as to face each other vertically. The movable frame 38 is U-shaped with a notch 39 corresponding to the transport side of the transport conveyor 4, and is mounted on a plate-shaped lifting frame 40 on the back side via a vibration isolator. The elevating frame 40 is slidably supported in the vertical direction on the sliding frame 41 via the sliding body 42, and the vertical position can be adjusted by operating the screw shaft 44 in the forward and reverse directions with the handle 43.

The sliding frame 41 is laterally slidably attached to a fixed frame 46 via a pair of upper and lower guide rails 45, and is driven by a driving means 47 to reciprocate laterally. . The fixed frame 46 is fixed to a pedestal 48 installed on the side of the transport conveyor 4, and the fixed frame 46 is provided with an opening 49 in the center thereof, and the driving means 47 is provided in the opening 49.
Is stored.

The driving means 47 comprises a crank mechanism 50 and a motor 51 for driving the sliding frame 41 via the crank mechanism 50. The crank mechanism 50 has an eccentric pin 54 mounted on the tip of a rotary shaft 52 via a flange portion 53, and the eccentric pin 54 is rotatably supported by one end of a connecting rod 55. The other end of the connecting rod 55 is connected to the sliding frame 41 by a pin 57 via a joint 56. Eccentric pin 54 is eccentric ring 53a
The amount of eccentricity with respect to the rotating shaft 52 can be appropriately adjusted by adjusting the rotation of the.

The rotating shaft 52 is attached to a mounting frame 59 via a bearing case 58.
Is rotatably supported by the motor 51 and is linked to the motor 51 via a coupling 60. The motor 51 is attached to the attachment frame 59 via the attachment bracket 61. The mounting frame 59 is arranged in the opening 49 of the fixed frame 46, and the opening 49
The guide rails 62 mounted on the fixed frame 46 at the upper and lower sides of the are supported slidably in the lateral direction. And the mounting frame
59 is equipped with a bracket 64 on one side to which a screw shaft 63, which is rotatably supported by a fixed frame 46, is screwed.
The position can be adjusted in the lateral direction by rotating 63. After adjusting the mounting frame 59, fix it with the bolt 66.
It is fixed at 46.

In the above structure, the endless rotation chain 9 of the conveyor 4 is always rotated in the direction indicated by the arrow a, and a large number of jigs 15 placed on it are fed in the same direction. Therefore, when the workpieces W before grinding are sequentially placed in the lateral direction on the jigs 15 on the upper side of the conveyor 4, the workpieces W are
It is transported in the direction of the arrow a while it is placed horizontally on top of 15.

When each jig 15 reaches the transfer position A, the transfer device (not shown) supplies the workpiece W on the jig 15 to the centerless grinder 1 to grind the shaft portion, While returning the ground workpiece W to the jig 15 again, the workpieces W are sequentially ground by the centerless grinding machine 1. The workpiece W after grinding is further conveyed in the direction indicated by the arrow a while being placed on the jig 15. Then, when reaching the air blow device 8, the dried air is blown from the air blow device 8 onto the work W to remove the adhering substances such as the grinding liquid adhering to the work W.

When the jig 15 reaches the dimension measuring position B, the light from the light emitting portion 32 of the confirmation switch 25 to the light receiving portion 33 is irradiated with the workpiece W.
This confirmation switch 25 detects the arrival of the workpiece W because it is cut off by the. Then, the pressing cylinder 31 extends and the positioning member 27 causes the jig to move through the roller 21.
Push 15 sideways. Therefore, the base plate 16 of the jig 15 is
Comes into contact with one of the guide plates 14, and the jig 15 is fixed on the roller 10 of the endless rotation chain 9 while stopping its movement.

When the jig 15 is fixed by the pressing cylinder 31, the lifting cylinder 29 is expanded and the lifting member 26
The base plate 16 of the jig 15 is pushed upward by. As a result, the jig 15 floats above the roller 10 of the endless rotating chain 9 and is reliably positioned at the dimension measuring position B, so that the workpiece W does not move unstable during measurement.

Next, the laser measuring instrument 5 is activated to irradiate the workpiece W with the laser light L in the vertical direction from the light projecting portion 6 to the light receiving portion 7 as shown in FIG. Measure the outer diameter of the. At this time, if the laser measuring device 5 is fixed,
The measurement site is set at one point of the workpiece W, and it becomes one point measurement,
When the motor 51 is operated, the laser measuring device 5 moves laterally along the axial direction of the workpiece W, so that multipoint measurement can be performed while changing the position in the axial direction of the workpiece W.

That is, when the motor 51 is operated, the rotating shaft 52
Since the eccentric pin 54 rotates integrally with the sliding frame 41, the sliding frame 41 reciprocally slides laterally via the connecting rod 55. Therefore, the lifting frame 40
The movable frame 38 attached to the sliding frame 41 via
The laser measuring device 5 reciprocates in the lateral direction, that is, in the axial direction of the workpiece W, by sliding integrally with the lateral direction.

Therefore, if the laser measuring device 5 is continuously moved to one side and the laser light L is emitted from the light projecting portion 6 at a predetermined timing, the shaft portion of the workpiece W can be moved at multiple points. Can be measured. Therefore, the dimensional accuracy of the workpiece W can be determined from the average value of the measured values at each position, and the measurement accuracy is significantly improved.

Further, if the maximum value, the minimum value, etc. are excluded from the respective measured values, even if there is a deposit such as a grinding fluid,
The measured value of that part can be omitted, and even if it is a workpiece W or the like that has a part that is not a measurement target, although it is very close in dimension to the measurement part, it is possible to measure a non-target part. It is also possible to prevent erroneous determination as a defective product. Furthermore, measurement is possible even when the workpiece W is a tapered member.

After the measurement of the workpiece W is completed, the push-up cylinder 29 is contracted, and then the press cylinder 31 is contracted to release the press, and the jig 15 is lowered onto the endless rotating chain 9. Then, after further transporting the jig 15 in the direction indicated by the arrow a, the workpieces W are sorted by a device (not shown) according to the quality of the measurement result.

When each jig 15 of the transport conveyor 4 is transported to the end on the downstream side, another jig (not shown) arranged in parallel to the jig 15 moves the upstream side of the transport conveyor 4. And it is returned one by one. Therefore, each jig 15 is cyclically transported by the transport conveyor 4 and the return conveyor.

In the embodiment, the conveyor 4 is of the free roller type, and a large number of jigs 15 are placed on the conveyor to convey the workpiece W. However, the endless rotating chain of the conveyor 4 is described. The jig 15 may be directly connected to 9. As the endless rotating body, an endless rotating belt may be used instead of the endless rotating chain 9 of the embodiment. In that case, a jig like the example
15 may be placed on the belt, or V may be placed on the conveyor surface of the belt.
A groove-shaped jig may be integrally provided.

Further, in the case of one-point measurement, it is possible to measure the workpiece W while it is being moved while being conveyed by the conveyor 4. The workpiece to be measured may be a workpiece W after centerless grinding as in the embodiment, a workpiece after machining, or a workpiece other than the workpiece. Therefore, the present invention is not limited to the outer diameter dimension measuring device attached to the centerless grinding machine 1.

[0044]

According to the present invention as set forth in claim 1, the object W to be measured is placed on the conveyor 4 so that the axis of the object W is in the lateral direction orthogonal to the direction of conveyance of the conveyor 4. Since the jig 15 for holding is provided and the object W to be measured is conveyed in the radial direction in the lateral direction, the ratio of the object W to be measured to the conveyor 4 is small. As a result, many objects to be measured W can be placed on the transport conveyor 4 and transported, and the length of the transport conveyor 4 can be shortened.

Further, so that the object to be measured W on the jig 15 is irradiated with the laser light L in the vertical direction, the light projecting section 6 and the light receiving section 7 of the laser measuring instrument 5 are arranged above and below the carrying side of the carrying conveyor 4. As compared with the case where the light emitting unit 6 and the light receiving unit 7 of the laser measuring instrument 5 are arranged on both the left and right sides of the conveyer conveyor 4, the conveyer conveyor 4 and the laser measuring instrument 5 overlap vertically. Since the area occupied by both of them becomes smaller, the conveyor 4
Combined with the miniaturization, there is an advantage that the entire device can be significantly miniaturized.

According to the second aspect of the present invention, since the jig 15 is stopped at the dimension measuring position B of the object to be measured W, the object to be measured W being conveyed by the conveyor 4 is shown. The measurement can be performed in a state of being temporarily stopped, and the occurrence of measurement error can be prevented as much as possible.

According to the third aspect of the present invention, the conveyor 4 is provided with the endless rotating body 9 on which the jig 15 is placed and conveyed, and the jig 15 is endlessly rotated at the dimension measuring position B. Moving body
Since the jig positioning means 24 for lifting and positioning the object W from 9 is provided, the jig W can be used while the object to be measured W is being placed.
After 15 is stopped at the dimension measuring position B, the jig positioning means 24 can position and measure, and highly accurate measurement is possible, and the reliability is remarkably improved.

Further, since the jig 15 is lifted from the endless rotary body 9 and positioned by the jig positioning means 24, the positioning accuracy of the object W to be measured is improved as compared with the case where the endless rotary body 9 is stopped and positioned. . Moreover, since the jig 15 is lifted from the endless rotary body 9 to be positioned, the endless rotary body 9 is
It is possible to perform positioning while rotating, and it is possible to efficiently measure the dimension of the object to be measured W in a short time and to increase the speed as compared with the case where the endless rotating body 9 is rotated intermittently. Is possible.

According to the present invention as set forth in claim 4, the laser measuring device 5 is provided on the movable frame 38 which is movably supported in the axial direction of the object to be measured W, and the movable frame 38 is provided with the axial center. Since the driving means 47 that reciprocates in the direction is provided, it is possible to perform multipoint measurement while moving the laser measuring device 5 in the axial direction of the object W to be measured.

Therefore, the object W to be measured is calculated from the average value of the respective measured values.
In addition to being able to judge the dimensional accuracy of, even if the maximum value, the minimum value, etc. are excluded from each measured value, the measured value of that part can be omitted even if adhered substances such as grinding fluid are attached. Even if the object to be measured W has a site that is very close in dimension to the measurement site but is not a measurement target, the measurement accuracy is significantly improved without measuring a site outside the measurement target. . Further, even when the object W to be measured is a tapered member, the measurement can be performed.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken along line XX of FIG.

FIG. 3 is a plan view of a jig showing an embodiment of the present invention.

FIG. 4 is a sectional view taken along line YY of FIG.

5 is a sectional view taken along line ZZ of FIG.

FIG. 6 is a cross-sectional view of a measurement state showing an example of the present invention.

FIG. 7 is a front view of a laser measuring device supporting apparatus according to an embodiment of the present invention.

FIG. 8 is a cross-sectional plan view of a supporting device for a laser measuring instrument according to an embodiment of the present invention.

FIG. 9 is a sectional side view of a supporting device of a laser measuring instrument according to an embodiment of the present invention.

[Explanation of symbols]

 W Measured object (workpiece) B Dimension measurement position 1 Centerless grinder 4 Conveyor 5 Laser measuring instrument 6 Light emitting part 7 Light receiving part 9 Endless rotating body 15 Jig 24 Jig positioning means 38 Movable frame 47 Driving means

Claims (4)

[Claims] 1. A conveyor (4) for conveying an object to be measured (W) such as a workpiece, and an object to be measured (W) conveyed by the conveyor (4) from a radial direction of a laser beam ( L) irradiating a laser measuring device (5) for measuring the outer diameter dimension, the outer diameter dimension measuring apparatus for a workpiece, etc.
A jig (15) for holding the object to be measured (W) is provided in (4) so that the axis of the object to be measured (W) is in the lateral direction orthogonal to the conveying direction of the conveyor (4). , So that the object to be measured (W) on the jig (15) is irradiated with the laser beam (L) in the vertical direction, the laser measuring device (5) is placed above and below the carrying side of the carrying conveyor (4). A device for measuring an outer diameter of a work or the like, characterized in that a light emitting unit (6) and a light receiving unit (7) are arranged. 2. An object to be measured (W) by a laser measuring device (5)
The outer diameter dimension measuring device for a workpiece or the like according to claim 1, wherein the jig (15) is configured to stop at a dimension measuring position (B) for measuring the dimension. 3. The transfer conveyor (4) is provided with an endless rotating body (9) on which the jig (15) is placed and transferred, and the jig (15) is installed at the dimension measuring position (B). The outer diameter dimension measuring device for a workpiece or the like according to claim 1 or 2, further comprising jig positioning means (24) for lifting and positioning the rotary body (9). 4. A laser measuring device (5) is provided on a movable frame (38) movably supported in the axial direction of the object to be measured (W), and the movable frame (38) is arranged in the axial direction. 4. A driving means (47) for reciprocating movement is provided, wherein the driving means (47) is provided.
An outer diameter dimension measuring device for the work etc.