JPH0320756Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a distance measuring device under load. Specifically, when measuring and detecting the attachment state of the bearing to the rotating shaft using a product with a rotating shaft equipped with a bearing as the object to be inspected, it is necessary to use contact members that come into contact with the object to be inspected with different heights in advance. The present invention relates to a measuring device that measures and detects the object to be inspected under conditions in which different types of urging forces are applied by changing the urging force of the urging member acting on the object to be inspected. .

[Prior Art] Generally, a certain preload is applied to a bearing incorporated in a rotating shaft or the like in the thrust direction in order to increase the steel properties of the rotating shaft. For example, a bearing (taper roller bearing) is attached to an end of a rotating shaft attached to the clutch housing body. The inner (inner ring) part of the bearing is fitted onto the outer circumferential surface of the end of the rotating shaft and is in contact with the outer circumferential surface. Further, the outer ring of the bearing abuts and is supported by a housing cover that is combined with the clutch housing body. The housing cover is assembled to the clutch housing body with a predetermined preload being applied to the outer part with respect to the inner part. Here, conventional distance measuring devices under load measure the mounting state of a bearing mounted on a rotating shaft, for example, a bearing mounted on a rotating shaft incorporated in a clutch housing, in terms of a relative distance to the clutch housing. , when detecting and determining whether or not the quality is acceptable, bias the bearing with a biasing force equal to the preload of the bearing, and measure and detect the mounting state of the bearing as a relative distance under the pressed condition. are doing.

[Problems to be solved by the present invention] Conventional distance measuring devices under load measure separately the mounting state of several types of bearings on the rotating shaft, which are assembled after pre-measurement and preloads of different magnitudes are applied. When detecting, it is necessary to change the biasing force applied to the bearing serving as the measurement unit each time. Accordingly, it is troublesome to manually change the biasing member attached to the distance measuring device under load, which takes time, and there is waste in the work process. In addition, in order to eliminate waste in the work process, a number of distance measuring devices incorporating a biasing member having a biasing force equal to the magnitude of the preload are installed in advance according to the type of the object to be inspected. was installed and used. In this case, equipment costs will be large.

[Means for Solving the Problems] The present invention provides the following means for solving the above-mentioned conventional problems.

That is, the distance measuring device under load of the present invention includes a housing attached to a unit body that is movable by a driving body, and a length detector that has one end fixed to the housing and whose tip is compressed by being pressed in the axial direction. , a movable member held movably in the axial direction by the housing, the tip of the length detector abuts one end surface, and the other end surface indirectly abuts the object to be inspected; the housing and the movable member; a biasing member provided between the movable member and biasing the movable member toward the distal end of the object to be inspected; and a plurality of pressing jigs convertably attached to the unit body in a direction orthogonal to the axial direction. Each pressing jig is configured with a contact member that is held movably in the axial direction, one end surface contacts the movable member, and the other end surface contacts the object to be inspected. This is characterized by the use of different heights.

With this configuration, when measuring and detecting the height of the measuring part of the object to be inspected with a single distance measuring device under conditions of different biasing forces, it is possible to A plurality of contact members set in stages can be automatically replaced, and the acting force of the biasing member that biases the measuring section can be changed by changing the height of one end surface of the contact member that contacts the movable member. Therefore, the load (biasing force equal to the magnitude of the preload applied at the time of assembly after measurement) can be obtained by changing the load in various ways and depending on the type of the object to be inspected.

The distance measuring device under load of the present invention includes a housing, a length detector, a movable member, a biasing member,
The contact member is a component. Among the components, the length detector can basically be the same as the conventional one.

The present invention features a housing, a movable member, a biasing member, and a contact member.

The housing has a length detector, a movable member, and a biasing member.

One end of the length detector is fixed to the housing, the tip is compressed by being pressed in the axial direction, and electrically measures the object to be inspected held on the support stand. As the length detector, for example, a commercially available magnetic scale, actuating transformer, or the like that measures distance as a linear displacement can be used.

The movable member is held in the housing so as to be movable in the axial direction, and the tip of the length detector is in contact with one end surface, and the other end surface is in contact with the object to be inspected via a contact member to be described later. It transmits the amount of contact movement with the body to the length detector. Further, the movable member is biased toward the object to be inspected by a biasing member provided between the movable member and the housing.

The biasing member has one end locked to the housing,
The other end contacts the movable member and urges the movable member. Further, the acting force of the biasing member can be varied in various ways by changing the height of the contact member, which will be described later. As a result, the test object is assembled after the measurement and is subjected to a biasing force equal to the applied preload.

Further, the biasing member can be composed of a first elastic member and a second elastic member. One end of the first elastic member is locked to the housing, and the other end contacts the movable member to bias the movable member.
The second elastic member has one end locked to the housing and the other end held in contact with the housing, and the movable member is pressed in a direction to contract the length detector and moves relative to the housing. By doing so, the movable member comes into contact with the other end held in contact with the housing and urges the movable member. The second elastic member is
It may be one or two. When two or more are provided, it is necessary to shift the pressing distance at which the movable member is pressed and abuts each second elastic member by a predetermined interval or more. The urging force of the urging member to press the object to be inspected is
For two or more types of objects to be inspected to which preloads of different magnitudes are applied during assembly after measurement, it can be set in advance to have a magnitude equal to the magnitude of the preload, respectively. For example, when dealing with two types of objects to be inspected, only the first elastic member that is set to have a biasing force equal to the preload applied to the first object is applied to the first object to be inspected. handle. Furthermore, for a second object to be inspected to which a preload larger than the preload applied to the first object to be inspected, the first object to be inspected is
The combined biasing force of the biasing force of the elastic member and the biasing force of the second elastic member is set to be equal to the magnitude of the preload applied to the second object to be inspected.

The contact member is held in a pressing jig so as to be movable in the direction of contraction of the length detector, and one end surface is in contact with the movable member,
The other end surface is in contact with the object to be inspected. The contact member is removably attached to the unit body together with the pressing jig. A plurality of contact members having different heights of one end surface that contacts the movable member are prepared in advance. Further, the contact member is used by selecting one of a plurality of contact members having different heights of one end surface depending on the type of the object to be inspected. Further, the contact member can change the biasing force exerted on the object to be inspected by the biasing member depending on the distance by which the biasing member is pressed via the movable member at the one end surface.

In this case, in response to changes in the shape, length, size, etc. of the measurement part of the object to be inspected, the other end surface and the one end surface that can reliably come into contact with the measurement part should be It is preferable that a plurality of contact members of different types having different heights are prepared in advance, and that the contact members are selectively used as necessary.

Moreover, any object can be used as the object to be inspected as long as it measures the distance between a certain reference surface (point) and a surface to be measured (point). For example, it is possible to measure the height of the bearing relative to the housing after installing the bearing at the tip of the rotating shaft inside the transmission housing that houses gears, etc., and detect the installation condition (press-fit tolerance, trend tolerance, etc.) .

Further, the outer peripheral surface of the housing is supported by a support member, and in this state, a unit body is formed, the upper part of which is connected to one end of the piston shaft of the driving body, and the lower part of which has a pressing part that comes into contact with the reference surface of the object to be inspected. It is preferable to attach it to

In this case, the housing can be moved up and down by the driver, and can also be moved toward and away from the object to be inspected held on the support device.

[Function] According to the configuration of the distance measuring device under load of the present invention, the measuring table on which the object to be inspected is moved toward the housing of the measuring device by the driver of the support device, and the measurement of the object to be inspected is carried out. The portion abuts the length detector via the contact member and the movable member. Further, the measuring part is acted upon by a biasing member having a biasing force determined by the height of one end surface of the contact member interposed between the housing and the movable member, and the measuring part is operated according to a predetermined regulation. While being pressed by pressure, the height is detected by the length detector and judged as either a normal value or an abnormal value. Here, when detecting the height of the measuring part of the object to be inspected using a length detector, if it is necessary to measure the measuring part under a condition where the measuring part is pressed with a small urging force, the object to be inspected must be mounted on a pressing jig. The height is detected by the length detector while the measurement part is pressed by the biasing member of the biasing force obtained by the contact member having a low height on one end face replaced by the replacement device. Ru. In addition, when it is necessary to measure under conditions in which the measurement part is pressed with a large biasing force, the object to be inspected is pressed by a biasing member with a biasing force obtained by a contact member having a high height on one end surface. While the measuring portion is pressed, the height (distance, dimension) is detected by the length detector.

[Effect] When measuring and detecting height under conditions in which a biasing force equal to the magnitude of the preload applied to the measuring part is applied to the measuring part of the object to be inspected, the biasing force provided in advance in one measuring device is Changing the urging force of the member depending on the type of the object to be inspected, and pressing the object to be inspected with an urging force of the same magnitude as the preload in accordance with the magnitude of the preload applied to the object to be inspected. I can do it. That is, a plurality of contact members with different heights of one end surface are used interchangeably depending on the purpose, and the biasing force of the biasing member is changed and used properly, and the biasing force is applied to the measurement part of the object to be inspected. The height can be measured and detected by a length detector while the object is being actuated.

Therefore, when measuring the heights of the measurement parts of a plurality of objects to be inspected under conditions of different urging forces, it is necessary to replace (setup change) the urging member for urging the measurement parts each time. With one distance measuring device, it is possible to measure a plurality of objects to be inspected with different biasing forces depending on the purpose.

[Example] An example of the distance measuring device under load according to the present invention will be described based on FIGS. 1, 2, and 3. (For convenience, when the same structure is shown in different positions, the same reference numerals will be used in the explanation.) The distance measuring device under load of the embodiment includes a housing 10, a length detector 20, a movable member 40, and an attachment. The components include a force member 50 and a contact member 60.

The housing 10 has a length detector 20, a movable member 40, a biasing member 50, and a contact member 60, and the upper part is connected to the piston shaft 701 of the first driving body 702.
is connected to. The first driver 702 is mounted on a horizontal guide shaft 83. This horizontal guide shaft 83 has both ends fixed to a first support 81 and a second support 82 extending vertically from both sides of the base 80.
Further, the outer peripheral surface of the housing 10 is supported by a support member 705, and the support member 705 that supports the housing 10 is attached to the unit body 70. The unit body 70 has a pressing portion 704 at its lower end that abuts against the measurement reference surface 302 of the object to be inspected 30. Further, the unit body 70 is guided along two guide shafts 84 and 85 hanging from the horizontal guide shaft 83, and can be moved up and down by the first drive body 702.

The length detector 20 has one end fixed to the housing and is installed at a position where the tip abuts the end surface of the movable member 40. Further, the amount of displacement is electrically measured by being compressed by being pressed in the axial direction.

The object to be inspected 30 is placed on a support device 90 installed on a base 80, and can be moved up and down by a second drive body 703 of the support device 90, and the object to be inspected 30 and the housing 10 are can be moved toward or away from each other by the first driving body 702 and the second driving body 703.

The movable member 40 is held movably in the axial direction by the housing 10, and the tip of the length detector 20 contacts one end surface 401, and the other end surface 402 indirectly contacts the measurement part 301 of the object 30 to be inspected. The other end surface is in contact with the measurement section 301 of the object to be inspected 30 via the contact member 60. Further, in this case, the other end surface 402 contacts the upper end surface 61 of the contact member 60 at three points. Moreover, it is urged in the direction of the measuring section 301 of the object to be inspected 30 by the urging member 50 installed between it and the housing 10 .

A case will be described in which the biasing member 50 is composed of a first elastic member 51 and a second elastic member 52. The first elastic member 51 and the second elastic member 52 may be coil springs. The first elastic member 51 is provided concentrically inside the second elastic member 52. Further, the first elastic member 51 has one end 51
0 is locked to the housing 10, and the other end 511
is in contact with the movable member 40 and always urges the movable member 40 in the direction of the measurement section 301 of the object 30 to be inspected. The second elastic member 52 is the first elastic member 51
is installed on the outside of the housing 10, and one end 521 is attached to the housing 10.
The other end 522 is held in contact with an annular moving body 53 inside the housing 10 . (The annular moving body 53 uses the stepped portion 102 in the housing 10 as a stopper and the limit in the downward movement direction, and also contacts the stepped portion 102 and moves upward from the housing 10. 10, and the other end 522 of the second elastic member 52 is held in contact with the annular moving body 53.)
Further, the other end 522 of the second elastic member 52 comes into contact with the movable member 40 via the annular moving body 53 when the movable member 40 moves in the direction of contracting the length detector 20. , is configured to bias the movable member 40. In addition, the movable member 40 can be biased by only the biasing force of the first elastic member 51 or by the combined biasing force of the first elastic member 51 and the second elastic member 52, depending on the purpose. .

The contact member 60 has an upper end surface 61 in contact with the other end surface 402 of the movable member 40, and a lower end surface 62 in contact with the object to be inspected 30.
It is in contact with the measuring section 301 of. and the measuring section 3
01 is transmitted to the length detector 20 via the movable member 40. The upper outer periphery of the contact member 60 is mounted in a guide groove 602 in a pressing jig 601 so as to be vertically movable. The contact member 60 is removably attached to the unit body 70 together with the pressing jig 601, and a plurality of contact members 60 are prepared in advance with different heights of the upper end surfaces 61 that contact the movable member 40. There is. Further, the contact member 60 has an upper end surface 61 depending on the type of the object to be inspected 30.
It is used by selecting one of a plurality of different heights. And the contact member 60 is connected to the biasing member 5 via the movable member 40 at the upper end surface 61.
The urging force of the urging member 50 against the object to be inspected 30 can be changed depending on the distance at which 0 is pressed.

The pressing jig 601 supports the contact member 60, and has an upper horizontal arm 604 that extends horizontally at the upper and lower parts of the vertical portion 603, and has the movable member 60 mounted thereon so as to be able to move up and down at different positions. It forms a lower horizontal arm 605. The pressing jig 601
The upper horizontal arm 604 is detachably attached to the engagement groove 11 of the unit main body 70. Further, the pressing jig 601 has a locking groove 606 formed in its vertical portion 603. It can be attached to and detached from the unit body 70 by a pressing jig exchange device 86 having a locking protrusion 861 that engages with the locking groove 606. Further, the pressing jig exchange device 86 is provided below the horizontal guide shaft 83. The pressing jig exchange device 86 includes a third driving body 87 that moves a moving member 863 along guide rails 861 and 862 that are installed in the front-rear direction below the horizontal guide shaft 83, and a third drive body 87 that is installed in the moving member 863 in the horizontal direction. and a fourth driving body 88 that moves the pressing jig 601 along the guide rail 864.

Next, the operation of one embodiment configured as described above will be explained. (In this case, the case where a contact member 60 with a low height of the upper end surface 61 is used will be shown and explained in FIGS. 1 and 2.) In advance, the upper horizontal arm 604 and the lower horizontal arm 605 of the pressing jig 601 are What is inspected object 3?
A plurality of contact members 6 according to the number of measuring parts 301 of 0
0, and the upper horizontal arm 604 is attached to the engagement groove 11 of the unit body 70.

The unit body 70 has been lowered to a predetermined position by the first drive device 702. Further, the object to be inspected 30 is placed on the measuring table 31 and moved in one direction forward or backward by the transport device 802.
The contact member 60 moves to the 0 position, is pushed upward by the second driving body 703 at this position, and comes into contact with the measuring section 301 of the object to be inspected 30 at a predetermined position. Further, a pressing portion 704 on the lower side of the unit body 70 is in contact with the measurement reference surface 302 of the object 30 to be inspected. At the same time, the contact member 60 that comes into contact with the measuring section 301 of the object to be inspected 30 reliably urges the measuring section 301 via the movable member 40 with a specified pressing force from the first elastic member 51 . The length detector 20 is connected to the measurement reference surface 302 of the object to be inspected 30 and the measuring section 3 under the urging force of the first elastic member 51.
Measures the distance between 01 and immediately detects abnormal values and normal values.

In addition, in the case of the object to be inspected 30 that needs to be measured under a specified urging force that is larger than the above case, the measuring part 301 that is in contact with the movable member 40 is connected to the first elastic body 51 and the second elastic body 52. A contact member 60 having a high upper end surface 61 is used so as to be pressed by the combined urging force of the contact member 60. (In this case, it will be shown and explained in FIG. 3.) With the measuring section 301 in contact with the contact member 60, the second drive device 703 of the support device 90 is driven to move the object to be inspected 30. Push up.
Then, after moving the movable member 40 and the contact member 60 upward by a certain distance against the biasing force of the first elastic member 51, the first elastic member 40 is moved through the annular moving body 53 that contacts the movable member 40. 2. Press and compress the elastic member 52. As a result, the combined urging force of the second elastic member 52 and the first elastic member 51 acts on the movable member 40 . This acting force is applied to the measurement unit 3 by the movable member 40 via the contact member 60.
01 with a specified urging force, the length detector 20
is the measurement reference surface 3 of the object to be inspected 30 under the combined urging force of the first elastic member 51 and the second elastic member 52.
Measure the distance between 02 and the measurement unit 301 and find an abnormal value,
Detect normal values immediately.

Note that when replacing the contact member 60, the pressing jig 60
1 from the unit body 70, the unit body 70 is moved upward by the second driving body 702. As a result, the pressing jig exchange device 8 is inserted into the locking groove 605 of the vertical portion 603 of the pressing jig 601.
When the locking projections 861 of No. 6 are engaged and the fourth drive body 88 is then operated, the pressing jig 601 is guided by the guide rail 864 and drawn into the moving member 863. Next, when the third drive body 87 is actuated, the moving member 863 moves in the front and back direction in FIG.
Another pressing jig 601 corresponds to the unit body 70. Thereafter, when the fourth drive body 88 is moved forward, a new pressing jig 601 is inserted into the unit body 70.

As described above, according to the embodiment of the present invention, a plurality of measurement parts 301 of the object to be inspected 30 can be measured simultaneously within one apparatus. In addition, when measuring the measurement part 301 of the object to be inspected 30 while biased and applying a biasing force, two types of elastic bodies installed in advance are used as necessary for each measurement of the object to be inspected 30. Section 301
Only a single biasing force equal to the preload size of
Alternatively, by using a combination of both as a biasing force, measurements can be made under different biasing force conditions. Therefore, unlike in the past, there is no need to manually replace several types of biasing members as needed each time, and a single distance measuring device can be used to apply different biasing forces to multiple objects to be inspected depending on the purpose. It can be measured by

[Brief explanation of the drawing]

1, 2, and 3 are explanatory diagrams of the distance measuring device under load according to the present invention. This figure and FIG. 3 are longitudinal sectional side views showing the main parts in FIG. 1. 10...Housing, 20...Length detector, 3
0...Object to be inspected, 51...First elastic member, 301
...Measurement part, 40...Movable member, 52...Second elastic member, 50...Biasing member, 60...Contact member,
601...Press jig, 70...Unit body, 86
...Press jig exchange device.

Claims (1)

[Claims for Utility Model Registration] (1) A housing attached to a unit body that is movable by a driving body, a length detector having one end fixed to the housing and whose tip is compressed by being pressed in the axial direction; a movable member held movably in the axial direction by the housing, the tip of the length detector abuts one end surface, and the other end surface indirectly abuts the object to be inspected; and between the housing and the movable member. a biasing member provided in the unit body and biasing the movable member toward the distal end of the object to be inspected; a plurality of pressing jigs installed in a direction perpendicular to the axial direction so as to be convertible to the unit body; The contact member is held movably in the axial direction by the jig, and has one end surface in contact with the movable member and the other end surface in contact with the object to be inspected. A distance measuring device under load, characterized by using devices with different distances. (2) The biasing member has one end locked to the housing, the other end contacting the movable member to bias the movable member, and at least one first elastic member having one end locked to the housing. and the other end is held in contact with the housing, and the movable member is pressed in a direction to contract the length detector and moves relative to the housing, thereby being held in contact with the housing. a second elastic member that contacts the other end and urges the movable member, and depending on the purpose, the movable member is moved by the urging force of the first elastic member or the first elastic member and the second elastic member. A distance measuring device under load according to claim 1, which can be biased by a combined biasing force.