JP2012149991A5 - - Google Patents

Description

Linear bending and twisting tester

  The present invention relates to a simultaneous bending and twisting testing machine for simultaneously testing bending and twisting of a linear body such as a conducting wire.

Robots and automatic devices have arms and bodies that operate to extend, shrink, bend, and rotate. In many cases, an actuator or a sensor is attached to the arm or the body, and a lead wire, a fiber, a tube or the like (hereinafter referred to as a lead wire) connecting these to the controller moves in accordance with them. Naturally, a load is applied to the arm and the body, but if a load (tension) is applied to the conducting wire or the like, there is a risk of cutting. For this reason, it is set so as not to apply tension, for example, slightly loosened and fixed at both ends. Generally, determining the thickness of the wire or the like, it is necessary to verify subjected to a durability test, in particular, lead or the like during the near it is because obtained compact, lightweight, momentum, would use a thin wire or the like The importance of testing is increasing.

  Conventionally, there have been bending and torsion testing machines, but these have been carried out independently, and none have been tested for bending and torsion at the same time. Furthermore, there was nothing to do without tension. The reason is that the test object is not a lead or the like that is held without tension. By the way, even if it is a conducting wire or the like, an operation accompanied by bending is naturally torsional, so it is necessary to simultaneously test bending and torsion under no tension (including tension due to its own weight). The following Patent Document 1 shows a testing machine that simultaneously performs bending and twisting of a shaft of a golf club, but the shaft is laid sideways and is subjected to a bending load due to its own weight.

JP 05-308803 A

The present invention has to be able to simultaneously test the torsional and bending a linear member of conductors such as under no tension.

Under the above-described problems, the present invention is the linear body bending and twisting simultaneous testing machine according to claim 1 for simultaneously testing the bending and twisting durability of the linear body without tension. This simultaneous testing machine has a bend radius setting consisting of a horizontal spindle with a face plate attached to the tip and swinging around the axis, and two rolls attached to the face plate and distributed to the axis of the spindle It is attached to the face plate above the tool and the bending radius setting tool, and rotates in the forward and reverse directions around the shaft core in conjunction with the swinging rotation of the face plate. A plane formed by the chuck that hangs down, the clamper that can move up and down to clamp the lower part of the linear body, and the linear body by connecting the face plate and the clamper passes through the axis of the face plate , and the face plate or / and the chuck swings. moving the clamper according to vertical stroke based on forward and reverse rotation vertical of It is a Te linear body and a suspending member placed under no tension bending of linear body, wherein is obtained by providing a torsion simultaneous testing machine.

  As a concrete example of the swing transfer and forward / reverse rotation of the face plate and chuck in this simultaneous testing machine, the swing rotational force of the main shaft is attached to the output shaft of the drive motor that rotates continuously in a certain direction. The means provided from the pinion which meshes with the ring gear connected with a drive arm and a rod, rocks | fluctuates, and is fixed to a main axis | shaft, The connection pin which connects a drive arm and a rod described in Claim 3 is a drive arm. 5. A means for changing the pivot angle of the main shaft by changing the position of the connecting pin, wherein the forward / reverse rotational force of the chuck is fixed to the outer periphery of the main shaft. 6. A bevel gear and a means attached to a face plate and a rotatable bevel pinion that meshes with the bevel gear, and a gear that meshes with the chuck and the bevel pinion according to claim 5. And, to change the normal and reverse rotation angle of the chuck by changing the gear ratio

According to the invention of claim 1, main shaft fitted with a face plate, the bending radius setting tool to determine the radius of the bend, chuck Carrying In Mouth the linear body is a device to be tested, the clamper and the linear body to clamp the striatum With a relatively simple structure such as a suspension line that raises and lowers the clamper according to the applied tension, the linear body can be tested for bending and twisting durability without tension. In this case, the face plate and chuck can be swung or forward / reversely rotated by merely swinging the main shaft, and therefore a one-turn drive motor is sufficient.

  According to the second aspect of the present invention, the main shaft, that is, the face plate and the chuck can be rotated and forward / reversely rotated with a simple structure. According to the third aspect, the main shaft can be swung by a very simple operation. Can be changed. According to the means of claim 4, the chuck can be rotated forward and backward with a simple structure, and according to the means of claim 5, the rotational angle of the forward and backward rotation can be changed by an extremely simple operation such as gear change. .

1 is a perspective view of a linear body bending and twisting simultaneous testing machine according to the present invention. FIG. It is a front view of the bending and twisting simultaneous testing machine of a linear object concerning the present invention. 1 is a side view of a linear body bending and twisting simultaneous testing machine according to the present invention. FIG. It is a perspective view around the main axis and face plate of the linear body bending and twisting testing machine according to the present invention. It is explanatory drawing of the drive system of the bending and twisting simultaneous testing machine of the linear body which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. A linear bending and twisting simultaneous testing machine (hereinafter referred to as a simultaneous testing machine) according to the present invention includes a horizontal main shaft 2 that is rotatably supported in a case 1 and a case 1 at the tip of the main shaft 2. A round face plate 3 attached to the outside, a bending radius setting tool 4 attached to the front surface of the face plate 3, a chuck 5 rotatably attached to the face plate 3 above the bending radius setting tool 4, and a chuck 5 It consists of a linear body 6 that is a subject to be suspended, a clamper 7 that clamps the lower part of the linear body 6, and a suspension rope 8 that connects the face plate 3 and the clamper 7.

  The main shaft 2 is installed so as to be able to swing and rotate. Specifically, the drive arm 10 is attached to the output shaft of the drive motor 9 provided in the case 1, and the drive arm 10 and the ring gear 11 installed near the drive motor 9 are connected by the rod 12. . In this case, the rotation radius of the drive arm 10 and the diameter of the ring gear 11 are adjusted so that the continuous rotation of the drive arm 10 is converted into the swinging rotation of the ring gear 11. The swing angle of the ring gear 11 can be changed by changing the position of the connecting pin 13 of the drive arm 10 and the rod 12. A pinion 14 is fixedly fitted to the main shaft 2, and the pinion 14 is driven by a ring gear 11.

  A roll base 15 is attached to the front surface of the shaft core upper surface plate 3 of the main shaft 2, and two rolls 16 having a predetermined thickness arranged on the roll base 15 so as to be distributed with respect to the shaft core of the main shaft 2 are predetermined. It is attached at intervals, and this constitutes the bending radius setting tool 4. As will be described later, since the bending radius of the linear body 6 is determined by the diameter of the roll 16, the bending radius setting tool 4 is obtained. The roll 16 is basically non-rotatable, but some rolls 16 are capable of rotating.

A bevel gear 17 is fixed to the case 1 on the back side of the face plate 3 at the outer peripheral position of the main shaft 2 protruding outside the case 1. A pinion shaft 20 is rotatably supported by a case 19 in which a bevel pinion 18 meshing with the bevel gear 17 is attached to the back side of the face plate 3. Therefore, when the face plate 3 swings and rotates as the main shaft 2 swings, the bevel pinion 18 rotates forward and backward in conjunction with this. Further, a gear 21 is fixedly fitted to the pinion shaft 20, and the gear 21 is also engaged with a gear 23 fixedly fitted to the chuck 5 that is pivotally supported by a case 22 attached to the front side of the face plate 3. Thus, the chuck 5 The rewritable oscillating rotation around its axis of the face plate 3, in conjunction with this forward and reverse directions rotates the axis around gear 23.

  In the state before starting, the chuck 5 is directed downward directly above the axis of the face plate 3, and this direction is referred to as a basic state in the following description. The chuck 5 is provided with an upper portion of a linear body 6 as a test object. The fastening structure of the chuck 5 may be a conventionally known structure.

  The linear body 6 held by the chuck 5 in the basic state hangs down between the two rolls 16 of the bending radius setting tool 4. When the face plate 3 swings and rotates, the linear body 6 is bent in the swinging direction with the one roll 16, and when the chuck 5 rotates forward and backward, the linear body 6 is twisted in that direction. However, in order to cause this twist, the lower part of the linear body 6 must be clamped, and the clamper 7 performs this. The clamper 7 may be anything as long as it can exert a tightening force. However, the clamper 7 can be moved up and down along with the upper and lower sides of the linear body 6 so that the linear body 6 can always be placed under no tension. ing.

  For the vertical movement of the clamper 7, two slide bases 24 are vertically attached to the front surface of the case 1, and a slider 25 that moves freely up and down with respect to the slide base 24 is provided, and the clamper 7 is attached to the slider 25. . Since the vertical movement of the clamper 7 needs to correspond to the vertical stroke based on the swing of the linear body 6, that is, the face plate 3, the suspension rope 8 is interposed between the face plate 3 and the slider 25. . In order to make the vertical movement of the clamper 7 and the linear body 6 the same, a plane formed by a line connecting the axis of the chuck 5 and the clamper 7 and a line connecting the connection points of the suspension cable 8, the face plate 3 and the slider 25. Needs to pass through the center of the face plate 3.

  Next, a method for testing the linear body 6 using the above simultaneous testing machine will be described. First, the upper part of the linear body 6 is gripped by the chuck 5. In addition, the linear body 6 here is not limited to a conducting wire, fiber, or tube for exchanging control signals or fluids, but also includes a conductor in which conducting wires are integrated in a strip shape or a round shape. Then, the linear body 6 is hung downward through the roll 16 and clamped by the clamper 7. Since the simultaneous testing machine of the present invention performs this test under no tension, the linear body 6 at this time is slightly loosened so as not to be tensioned by its own weight. When the drive motor 9 is started, the chuck 5 is rotated together with the face plate 3 to repeat the operation of bending the linear body 6 with respect to the swing side roll 16.

  At the same time, the chuck 5 rotates forward and backward in accordance with the direction of rocking rotation and repeats the operation of twisting the linear body 6. This makes it possible to test the durability of bending and twisting simultaneously. Needless to say, the number of times of bending and twisting can be counted. By the way, even if the face plate 3 is swung, the length of the linear body 6 should not basically change. However, since the roll 16 actually has a round shape, It is wound up by this and becomes slightly shorter, so that the clamper 7 is lifted. A similar phenomenon occurs when the linear body 6 is twisted. For this reason, when the chuck 5 rotates forward and backward, tension is applied to the linear body 6.

Therefore, the clamper 7 is connected by the face plate 3 and the suspension rope 8 and is moved up and down to follow the length of the linear body 6 so that the linear body 6 is always placed under no tension. . In this respect, it is preferable to make the suspension rope 8 sufficiently thick to increase the strength. The diameter and spacing of Russia Lumpur 16 in accordance with the spirit of the test will be adjusted appropriately. Is obtained so as to immediately actually linear member 6 used bending radius or the like. Along with this, prepare a plurality of rolls having different diameters and change the interval between the rolls 16.

  By the way, in the above description, the swing angle of the forward / reverse rotation of the chuck 5 is such that the hole provided in the drive arm 10 through which the connecting pin 13 passes is made the long hole 10a and the position of the connecting pin 13 is changed in the long hole 10a. It can be changed with a very simple operation. Of course, it can be adjusted by changing the gear ratio between the ring gear 11 and the pinion 14 instead of or in combination with this.

  In addition, the forward / reverse rotation angle can be adjusted by changing the gear ratio between the gear 21 attached to the pinion shaft 20 and the gear 23 attached to the chuck 5. In this case, the two gears 21 and 23 are replaced at the same time, but it is not necessary to change the distance between the cores. If the two gears 21 and 23 are attached to the pinion shaft 20 and the starting end of the chuck 5, the replacement operation is performed. Is easy. It can be adjusted by changing the diameter (number of teeth) of the bevel pinion 18 instead of or in combination with this. In order to make the test severe, the rocking angle is about 180 ° and the forward / reverse rotation angle is about 360 °, but rocking and rotation exceeding 360 ° are also possible.

  What has been described above is for testing a test piece (linear body 6) at the same time for bending and twisting under no tension, but the test piece (linear body 6) can also be tested under a situation where tension is applied to the linear body 6. For example, the test can be performed with the suspension rope 8 removed, a weight suspended from the clamper 7, and the required tension applied by the weight of the weight. It is also possible to test bending and torsion separately. More specifically, if the transmission system to the chuck 5 is cut off, only bending will occur, and if the bending radius setting tool 4 is removed, only twisting will occur.

DESCRIPTION OF SYMBOLS 1 Case 2 Main axis | shaft 3 Faceplate 4 Bending radius setting tool 5 Chuck 6 Linear body 7 Clamper 8 Suspension rope 9 Starting motor 10 Drive arm 10a Long hole of 11a Ring gear 12 Rod 13 Connecting pin 14 Pinion 15 Roll base 16 Roll 17 Bevel gear 18 Bevel Pinion 19 Case 20 Pinion Shaft 21 Gear 22 Case 23 Gear 24 Slide Base 25 Slider

Claims (5)

This is a simultaneous testing machine for bending and twisting of linear bodies that tests the durability of bending and twisting of linear bodies simultaneously without any tension. This simultaneous testing machine is equipped with a face plate at the tip and around the axis. A bending radius setting tool composed of a horizontal main shaft swinging and rotating, and two rolls attached to the face plate and distributed to the axis of the main shaft, and attached to the face plate above the bending radius setting tool. A chuck that rotates forward and backward around the shaft in conjunction with the pivoting rotation, hangs down between the two rolls, holding the upper part of the linear body, and a vertically movable clamper that clamps the lower part of the linear body And the plane formed by connecting the face plate and the clamper through the linear body passes through the axis of the face plate, and the clamper is moved up and down according to the vertical stroke based on the swing or forward / reverse rotation of the face plate or / and the chuck. It is a linear body and a suspending member placed under no tension Bending of the linear body, wherein, the torsion simultaneous testing machine. Oscillating rotational force of the main shaft is applied from a pinion that meshes with a ring gear that is connected to a driving arm attached to an output shaft of a driving motor that continuously rotates in a certain direction and a rod, and that rotates and rotates. The linear body bending and twisting simultaneous testing machine according to claim 1. The bending of the linear body according to claim 2, wherein a connecting pin for connecting the drive arm and the rod can be fixed so as to be movable in the radial direction of the drive arm, and the swing angle of the main shaft is changed by changing the position of the connecting pin. Twisting simultaneous testing machine. Forward and reverse rotation force of the chuck, the bending of the rotatable bevel pinion or al granted Ru claims 1-3 either linear body meshing with attached to bevel the bevel gear and face plate that is fixed to the outer periphery of the main shaft, Twisting simultaneous testing machine. The linear body bending and twisting simultaneous testing machine according to claim 4, wherein gears meshing with each other are fixedly fitted to the chuck and the bevel pinion, and the forward / reverse rotation angle of the chuck is changed by changing the gear ratio.