JP2007278832A - Jig for measuring level difference of connecting plane of direct-acting bearing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple jig for measuring level differences of connecting planes of direct-acting bearings used for guide rails etc. and capable of uniform measurements by converting measurement values of the level differences of the connecting planes into numerical values, improving measurement accuracy, and controlling level differences of connecting planes of bearing rails below an allowable level. <P>SOLUTION: A measuring jig body 1 is fitted over a bearing rail B1 of a direct-acting bearing B, slides, and moves. Measuring devices 2-4 are arranged in such a way that gauge heads 21, 31, and 41 may be fitted in raceway grooves Ba-Bc for guiding three side surfaces formed in a bearing rail M1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a measuring jig for a connecting surface step of a linear motion bearing, and in particular, by quantifying the measured value of the connecting surface step of the linear moving bearing, the connection surface step measurement is made uniform, the measurement accuracy is improved, and further the bearing The present invention relates to a measuring jig for a step difference in a connecting surface of a linear motion bearing which is intended to extend the life of a block and to smoothly move the block.

  Conventionally, for example, in a liquid crystal manufacturing factory or the like, as shown in FIG. 1, a plurality of thin glass plates or the like are stacked and stored in a cassette K, and the stacker crane C is mounted along the transport line by mounting this cassette. Then, transfer the cassette K at each processing station position, transfer it to the next processing station position after performing necessary processing, and transfer the cassette K. There has been proposed a stacker crane for transporting a substrate, which is performed using a transfer machine arranged on a lifting platform (moving body) that is guided by a main mast and moves up and down.

By the way, a linear motion bearing is adopted as a lifting guide rail of the lifting platform so that the lifting platform E of the stacker crane C is suspended and supported by the wire rope W and smoothly moves up and down along the main mast M.
This linear motion bearing consists of a bearing rail that is arranged and fixed along the main mast, and a bearing block that is arranged and fixed by bolts on the lifting platform side, and the bearing rail is in a guide groove formed in this bearing block. Is slidably inserted and is guided by the bearing rail so that the lifting platform moves up and down.

Since the bearing rail B1 is manufactured to a predetermined length in manufacturing, when the bearing rail B1 is disposed along the main mast and over the entire length thereof, the main surface of the bearing rail B1 is made so that the end surfaces of the bearing rails face each other. It is attached so as to be applied to the length of the mast, and the rod is also made into one bearing rail.
However, a large load more than a preset allowable load is often applied to the lifting platform due to vibration and mounting load. In such a case, a large moment may act on the bearing block via the lifting platform. In such a case, when the bearing block is inserted into the bearing rail and slidably moves, if there is an excessive level difference in the connection between the bearing rails, the bearing block may be damaged or the movement may be hindered. There are times. For this reason, in order to move smoothly without damaging a bearing block, it is necessary to prevent a step more than an allowable level from being generated in a connection portion between bearing rails when a new bearing rail is installed.

  However, when a bearing rail is newly installed or during regular maintenance, the step of the connecting surface of the bearing rail of this predetermined length (fixed size) is measured based on palpation and / or experience of a skilled worker. Because it is done by intuition, due to individual differences among workers, and due to the physical condition of the day, measurement by palpation and intuition tends to vary, and measurement records cannot be left quantitatively. In addition, there was a problem that the same measurement work had to be performed during regular maintenance.

  In view of the problems of the measuring method for the step difference of the contact surface of the linear motion bearing, the present invention makes the measurement uniform by quantifying the measured value of the step difference of the linear motion bearing used as a guide rail or the like. Therefore, an object of the present invention is to provide a measuring jig for the step of the contact surface of the linear motion bearing, which is a simple device and improves the measurement accuracy so that the step of the bearing rail connection surface is kept below an allowable level.

  In order to achieve the above object, the measuring jig for the connecting surface step of the linear motion bearing according to the present invention is inserted into the bearing rail of the linear motion bearing and is slidably moved on the measuring jig main body. The measuring instrument is arranged so that the measuring element is fitted in the guide groove on the three side surfaces formed in the above.

  In this case, the measuring instrument can be a dial gauge.

  Moreover, it is possible to connect a measuring jig body including a plurality of measuring devices to a lifting platform that moves up and down along the bearing rail.

  In addition, a plurality of measuring jig main bodies having a plurality of measuring devices can be arranged for one bearing rail.

  Moreover, the measuring jig main body provided with the several measuring device can be moved along the bearing rail by pulling it manually.

  In addition, a load meter can be disposed on the measurement jig body pulled by human power.

  According to the measuring jig for the step of the connecting surface of the linear motion bearing according to the present invention, the three side surfaces formed on the bearing rail are fitted on the measuring jig main body which is fitted so as to straddle the bearing rail of the linear motion bearing and slides. By placing the measuring device in such a way that the measuring element fits into the guide groove of the guide, the measuring jig body is made the same as the bearing block along the bearing rail, in particular along the connection portion of the bearing rail. It is possible to measure the level difference on the three sides of the bearing rail accurately and easily during new installation and periodic maintenance, so that the level difference of the bearing rail connection part is within the tolerance specified by the manufacturer. Therefore, the bearing block can be prevented from being damaged, and the measured value can be stored quantitatively.

  Further, by using a dial gauge as the measuring instrument, it is possible to accurately measure the level difference and to easily save the measured value.

  In addition, the measurement jig body equipped with multiple measuring instruments can be connected to a lifting platform that moves up and down along the bearing rails. It becomes possible.

  In addition, by arranging a plurality of measuring jig bodies having a plurality of measuring devices with respect to one bearing rail, it is possible to measure in a short time even when there are a large number of connecting portions on the bearing rail. .

  In addition, by making it possible to move the measuring jig body with multiple measuring instruments along the bearing rail by pulling it manually, the steps can be measured sequentially when the bearing rail is installed. Can understand the situation.

  Also, by placing a load meter on the measurement jig body that is pulled manually, when moving the measurement jig body manually, pull it with a uniform attractive force while checking the value of the load meter. Therefore, the level difference can be detected more accurately.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a measuring jig for a connecting surface step of a linear motion bearing according to the present invention will be described below with reference to the drawings.

FIG. 1 to FIG. 4 show an embodiment of a measuring jig for the step of the connecting surface of the linear motion bearing of the present invention.
Although this invention is not specifically limited, For example, as shown in FIG. 1, it can apply to the stacker crane which mounts and conveys the cassette K, and demonstrates based on this Example below.
A stacker crane C employed in a liquid crystal manufacturing factory or the like establishes a main mast M on a traveling carriage T that travels along a traveling rail R, and a wire rope along the main mast M and by a lift driving device D. The linear motion bearing B is employed to guide the lifting platform E that winds up and unwinds W and supports it in a suspended manner.
This linear motion bearing B is disposed along the main mast M, and is fixed to the bearing rail B1. The bearing rail B1 is slidably fitted into the guide groove, and is disposed on the lifting platform side with a bolt or the like. And the bearing block B2 to be fixed.

As shown in FIG. 2 to FIG. 3, the measuring jig A for connecting surface step of the linear motion bearing of the present invention includes a measuring jig main body 1 and a measuring instrument 2 attached to at least three side surfaces of the measuring jig main body 1. 3 and 4.
The measuring instruments 2, 3, and 4 all have the same configuration and are not particularly limited, but, for example, a dial gauge is adopted.
As with the bearing block B2, the measuring jig body 1 is formed with a guide groove 11 so as to open on one side surface to which the measuring devices 2, 3, and 4 are not attached, and the bearing rail B1 is formed in the guide groove 11. It should be slidably inserted.
Therefore, the mounting positions of the measuring instruments 2, 3, 4 to the measuring jig body 1 are the three side surfaces other than the opening surface of the guide groove 11, but as shown in FIG. Each probe 21, 31, 41 is positioned to fit into the raceway grooves Ba, Bb, Bc respectively formed on the three side surfaces of the bearing rail B 1, and the tip of each probe 21, 31, 41 is each track groove Ba, Bb. , Bc is in contact with the inner bottom surface.
In addition, the size of the guide groove 11 is determined so as to be able to slide smoothly and without rattling with a clearance within an allowable range when fitted into the bearing rail B1, similarly to the bearing block B2. To do.

  When the measuring jig A configured in this way is attached to the stacker crane C, it is not particularly limited. For example, as shown in FIG. 1, each bearing disposed and fixed along the main mast M. It is arranged at the upper end and / or lower end of the rail B1, and can be moved from the vertical direction along the bearing rail B1, but this number can be reduced when the bearing rail B1 is short and the number of connections is small It is.

  When the measuring jig A is arranged at the upper end and / or the lower end of the bearing rail B1, it can be connected to the lifting platform E that moves along the bearing rail B1, so that when the lifting platform E moves, The measurement jig A can be moved together to measure the level difference at the connection portion of the bearing rail B1.

  Further, when the measuring jig A of the present invention is moved along the bearing rail B1 by a pulling force drawn by an operator, the pulling rope 5 is directly fastened to the measuring jig A, and the pulling rope 5 is Although it can be pulled, in order to measure with higher accuracy, as shown in FIG. 4, a load meter 6 is attached to the measuring jig A and pulled by the tow rope 5 through the load meter 6. Can do.

Next, the operation of the measuring jig for the step difference of the connection surface of the linear motion bearing of the present invention will be described.
When the bearing rail B1 is newly installed at a predetermined position along the main mast M of the stacker crane C, a plurality of fixed-size bearing rails B1 are connected to each other according to the length (height) of the main mast M. The end faces are brought into contact with each other and fixed to the main mast M, and a bearing rail B1 having a required length is disposed along the main mast M.
At this time, every time the fixed-size bearing rails B1 and B1 are abutted and fixed, the step can be measured. In this case, the measuring jig A is inserted into one of the bearing rails B1 as shown in FIGS. 2 to 3, and the tips of the measuring elements 21, 31, 41 of the measuring instruments 2, 3, 4 are the bearings. The rail B1 is in contact with the inner bottom surface of each track groove Ba, Bb, Bc. Thereafter, the connecting surface position of the measuring jig body 1 is moved along the bearing rail B1. At this time, it is possible to easily measure whether or not the step is within an allowable range by reading the scales of the measuring devices 2, 3, and 4 attached to the measuring jig body 1.

Further, after mounting the bearing rail B1 over the entire length of the main mast M, the measuring jig A disposed as shown in FIGS. 2 to 3 is manually installed on the upper end and / or lower end of the bearing rail B1. By moving, the level difference of the connection surface of each bearing rail B1 can be measured by reading the scales of the measuring devices 2, 3, and 4. In this case, if the step on the connection surface is greater than or equal to an allowable value, the step is corrected so as to be within the allowable range.
In addition, by connecting the measuring jig A to the lifting platform E installed on the main mast M, and moving the lifting platform E up and down, the measuring jig A simultaneously measures the step on the connection surface of the bearing rail B1. be able to. In this case, the measurement work can be performed while operating the lifting platform E when the bearing rail B1 is newly installed or during regular maintenance.

Moreover, when measuring manually, the measurement jig | tool A comprised as shown in FIGS. 2-3 is inserted in the bearing rail B1 which should be measured. At this time, similarly, the tips of the measuring elements 21, 31, 41 of the measuring devices 2, 3, 4 are brought into contact with the inner bottom surfaces of the track grooves Ba, Bb, Bc of the bearing rail B1. Then, as shown in FIG. 4, the load meter 6 is attached to the measuring jig A, and the tow rope 5 is pulled and moved through the load meter 4.
By attaching the load cell 6 to the measurement jig A, the measurement operator can pull the measurement jig A so that the scale of the load cell 6 is constant. Is possible.

  As mentioned above, although the measuring jig of the connection surface level | step difference of the linear motion bearing of this invention was demonstrated based on the Example, this invention is not limited to the structure described in the said Example, and does not deviate from the meaning. The configuration can be changed as appropriate within the range.

  The measuring jig for the connecting surface step of the linear motion bearing according to the present invention has characteristics that the measurement value can be made uniform by quantifying the measured value of the connecting surface step, and the measurement accuracy can be improved easily. Therefore, it can be suitably used for measuring the connection surface step of the linear motion bearing, and can also be used for measuring the step of various guide rail connecting portions.

The one Example which applied the measuring jig of the connection surface level | step difference of the linear motion bearing of this invention to the stacker crane is shown, (A) is a front view, (B) is a side view. The measurement jig | tool main body is shown, (A) is a front longitudinal cross-sectional view, (B) is a side view. It is measurement explanatory drawing of the connection surface level | step difference of the linear motion bearing by a measurement jig. It is explanatory drawing which carries out traction measurement of the measurement jig | tool manually.

Explanation of symbols

A Measuring jig C Stacker crane M Main mast B Linear motion bearing B1 Bearing rail B2 Bearing block Ba, Bb, Bc Track groove 1 Measuring jig body 2, 3, 4 Measuring instrument 21, 31, 41 Measuring element 5 Towing rope 6 Load cell

Claims (6)

  Measuring instrument with a measuring element inserted into the guide groove on the three side surfaces formed on the bearing rail in the measuring jig body that is inserted so as to straddle the bearing rail of the linear motion bearing and slides. A measuring jig for a step difference in a connecting surface of a linear motion bearing, characterized in that   2. A measuring jig for a step difference in a connecting surface of a linear motion bearing according to claim 1, wherein the measuring instrument is a dial gauge.   3. A measuring jig for a step difference in a connecting surface of a linear motion bearing according to claim 1 or 2, wherein a measuring jig body having a plurality of measuring devices can be connected to a lifting platform that moves up and down along the bearing rail. Ingredients.   4. A measuring tool for measuring a step difference in a connecting surface of a linear motion bearing according to claim 1, wherein a plurality of measuring jig main bodies each having a plurality of measuring devices are arranged for one bearing rail. Ingredients.   3. A measuring jig for measuring a step of a connecting surface of a linear motion bearing according to claim 1, wherein a measuring jig body provided with a plurality of measuring devices is movable along the bearing rail by being pulled manually. Ingredients.   6. A measuring jig for a step difference in a connecting surface of a linear motion bearing according to claim 1, wherein a load meter is disposed on a measuring jig body pulled by human power.

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