JP2011099797A - Fixing jig of contact type distortion measurement machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing jig of a contact type distortion measurement machine for preventing a workpiece from being deformed, and stably fixing it. <P>SOLUTION: The fixing jig 1 for fixing the workpiece W to the contact type distortion measurement machine M includes: a base member 2; base suction members 31, 32 provided in the base member 2, and detachably sucked and fixed to the workpiece W; measurement machine support members 41, 42 for supporting the contact type distortion measurement machine M; measurement machine suction members 51, 52 provided in the measurement machine support members 41, 42, and detachably sucked and fixed to the workpiece W; and coupling arms 61, 62 for coupling and fixing the base member 2 to the measurement machine support members 41, 42. The coupling arms 61, 62 have a position adjustment mechanism 611 for adjusting positions of the base suction members 31, 32 relative to the measurement machine suction members 51, 52. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fixing jig for fixing a contact-type strain measuring machine to a workpiece, and particularly to a fixing jig for a contact-type strain measuring machine that can be stably fixed while preventing deformation of the workpiece.

Generally, when measuring distortion of a vehicle body panel, there are a contact type and a non-contact type. In non-contact strain measurement, a laser is projected onto the measurement surface and measured in comparison with a regular drawing that has been recognized in advance, and is not suitable for verification of deformation because it is compared with a regular drawing. .
On the other hand, in contact-type strain measurement, a measuring machine is fixed to a workpiece with an attracting member having a magnet on a vehicle body, and strain on the workpiece surface is measured while scanning a detector (for example, Patent Documents 1 and 2).

Japanese Patent Laid-Open No. Sho 62-133307 (FIG. 4) Japanese Patent No. 3118118

However, the contact type can be used on a flat surface when the weight of the device is taken into account, but in the measurement on a curved surface, the suction portion comes into contact with the workpiece and the suction member cannot be stably fixed to the workpiece. There was a problem.
Further, when measuring side portions such as fenders and doors in the vehicle body, the apparatus cannot be supported by the suction member, so that there is a problem that personnel holding the measuring machine are required and measurement cannot be performed alone.

  This invention is made | formed in view of such a background, and makes it a subject to provide the fixing jig of the contact-type distortion measuring machine which can be fixed stably, preventing a deformation | transformation of a workpiece | work.

  In order to solve the above problems, an invention according to claim 1 is a fixing jig for fixing a contact-type strain measuring machine to a work, and is provided with a base member and the base member, which is detachably attached to the work. A base adsorbing member that is fixed in place, a measuring instrument supporting member that supports the contact-type strain measuring instrument, a measuring instrument adsorbing member that is provided in the measuring instrument supporting member and is detachably adsorbed and fixed to the workpiece, A connecting arm that connects and fixes the base member to the measuring machine support member, and the connecting arm has a position adjustment mechanism that adjusts the position of the base suction member with respect to the measuring machine suction member. It is characterized by.

  According to this configuration, by providing the connecting arm for connecting and fixing the base member to the measuring machine support member, a load acting on the workpiece from the measuring machine suction member disposed in the vicinity of the measurement target range is provided. The connection arm can be opened to the base adsorption member via the base member. In this way, it is possible to prevent the deformation of the work by distributing the load acting on the work.

  In addition, by having a position adjustment mechanism that adjusts the position of the base suction member with respect to the measuring device suction member, the base suction member can be disposed at an appropriate position of the workpiece. For this reason, since the base adsorbing member can be stably fixed to the workpiece, it is possible to hold the contact-type strain measuring machine (referred to as “measuring machine” as appropriate) firmly, and the operator can perform measurement alone. Therefore, workability is improved and man-hours are reduced. Then, by fixing the base adsorbing member to a part where the rigidity of the work can be further ensured, it is possible to reduce the load applied to the work and prevent deformation, thereby improving the measurement accuracy.

  The invention according to claim 2 is the fixing jig for the contact-type strain measuring instrument according to claim 1, wherein the base suction member is composed of a pair of base suction members arranged apart from each other. The member has one base member provided with one base adsorption member of the pair of base adsorption members and the other base member provided with the other base adsorption member, and the one base A member and the other base member are connected by a spring member.

  According to such a configuration, the measuring device is supported while the excessive load transmitted from the suction member to the workpiece is absorbed by the spring member by connecting the one base member and the other base member by the spring member. Therefore, it is possible to stably fix the measuring machine to the workpiece while preventing deformation of the workpiece.

  The invention according to claim 3 is the fixing jig for the contact-type strain measuring machine according to claim 1 or 2, wherein the position adjusting mechanism is a rod-like shape that can be fixed in a freely bent state. A plurality of cylindrical members made of a bending member and arranged in a rosary shape so that the end portions are joined to each other continuously in the longitudinal axis direction, and the plurality of cylindrical members inserted inside the plurality of cylindrical members A wire that connects the members, and a lock mechanism that holds the form continuously formed by the plurality of cylindrical members by applying tension to the wires and pressing the ends against each other, It is provided with.

  According to this configuration, the position adjusting mechanism includes the lock mechanism that locks the wire by applying tension to the wire, so that the base member can be connected and fixed easily to the measuring machine support member. Since the base member can be moved freely by releasing the tension of the wire and releasing the lock, the workability is further improved.

  The invention according to claim 4 is the fixture for a contact-type strain measuring instrument according to any one of claims 1 to 3, wherein the base adsorbing member and / or the measuring instrument adsorbing member are: A suction part that is sucked by the workpiece and a shaft part that supports the suction part are provided, and the shaft part is provided with a height adjusting mechanism that varies the length of the shaft part.

  According to such a configuration, since the height adjustment mechanism that changes the length of the shaft portion is provided, the suction portion can be appropriately and easily joined to the workpiece, so that workability is improved and the measuring machine is stabilized. Can be fixed to the workpiece.

  The invention according to claim 5 is the fixture for a contact-type strain measuring instrument according to any one of claims 1 to 4, wherein the base adsorbing member and / or the measuring instrument adsorbing member are: It is characterized by having an adsorption part adsorbed by the workpiece and a shaft part that supports the adsorption part, and the shaft part is provided with an elastic member that supports the adsorption part in a tiltable manner.

  According to such a configuration, by providing an elastic member having flexibility and supporting the suction portion so as to be tiltable, the suction portion can be vertically joined to the workpiece, so that an excessive load is applied to the workpiece. Therefore, the measuring machine can be stably fixed to the workpiece while preventing deformation of the workpiece. In addition, since the height direction can be adjusted by providing the elastic member, workability is improved and the suction portion can be appropriately and easily joined to the workpiece.

  The present invention can provide a fixing jig for a contact-type strain measuring machine that can be stably fixed while preventing deformation of a workpiece.

It is a perspective view which shows the structure of the fixing jig which concerns on embodiment of this invention. It is a front view which shows the structure of the fixing jig which concerns on embodiment of this invention. It is a top view which shows the structure of the fixing jig which concerns on embodiment of this invention. It is a front view which shows the structure of the base adsorption | suction member which concerns on embodiment of this invention, (a) shows the state in which the axial part was straight, and (b) shows the inclined state. It is a front view which shows the structure of the measuring machine adsorption member which concerns on embodiment of this invention. It is a partially broken front view which shows the structure of the connection arm which concerns on embodiment of this invention.

  The configuration of the fixing jig 1 of the contact strain measuring machine (measuring machine M) according to the embodiment of the present invention will be described in detail mainly with reference to FIGS. 1 to 3 show a state in which the measuring machine M is mounted on the fixing jig 1, and shows a case in which distortion is measured with the door panel of the vehicle body standing vertically as the workpiece W. In the following description, it is referred to as up / down, left / right, and front / rear direction as viewed from an operator (not shown) facing the workpiece W.

As shown in FIG. 1, the fixing jig 1 of the measuring machine M according to the embodiment of the present invention is a jig for detachably fixing the measuring machine M to the workpiece W.
The measuring machine M includes a main body M2 including a measuring element M1 that is brought into contact with the workpiece W, a slide rail M3 that guides the main body M2 in a reciprocating manner, and a circuit M4 that stores an amplifier (not shown). Then, the distortion of the work W can be calculated and obtained by transmitting data from the circuit unit M4 to an arithmetic device (not shown).

  As shown in FIGS. 2 and 3, the fixing jig 1 includes a base member 2, a pair of base adsorption members 31 and 32 that are provided on the base member 2 and are detachably adsorbed and fixed to the workpiece W. Measuring machine support members 41 and 42 that respectively support both ends of the measuring machine M, and measuring machine suction members 51 and 52 that are provided on the measuring machine support members 41 and 42 and are detachably attached to the workpiece W and fixed. And a pair of connecting arms 61 and 62 for connecting and fixing the base member 2 to the measuring machine support members 41 and 42.

  The base member 2 includes a right base 21 and a left base 22, a leaf spring 23 that is a spring member that couples the right base 21 and the left base 22, and handles 24 and 24 that are gripped and operated by an operator (not shown). And L-shaped brackets 25 and 25 to which the connecting arms 61 and 62 are fixed.

The right base 21 and the left base 22 are each made of a plate-like member, and escape holes 21a and 22a for weight reduction are formed.
The leaf spring 23 is fixed to the right base 21 and the left base 22 with bolts B1. The leaf spring 23 is deformed in the bending direction and the torsional direction, and absorbs the load transmitted from the base suction member 31 to the right base 21 and the load transmitted from the base suction member 32 to the left base 22 while connecting arms. The spring constant is set to an appropriate value that can firmly support the measuring device M via 61 and 62.

  In the present embodiment, the spring member is constituted by a leaf spring, but is not limited to this, and a torsion spring, a synthetic resin, a rubber spring, or the like may be used as appropriate.

Although the base adsorbing members 31 and 32 are fixed to the right base 21 and the left base 22, respectively, the base adsorbing member 31 will be described with reference to FIG.
As shown in FIG. 4A, the base attracting member 31 includes a permanent magnet 31a that constitutes an attracting portion that is attracted to the workpiece W, shaft portions 31b and 31d that support the permanent magnet 31a, and the shaft portion 31b. , 31d is provided with an elastic member 31c attached to an intermediate portion of the first magnet 31d and a protective member 31g attached so as to cover the permanent magnet 31a.

  Specifically, the shaft portions 31b and 31d include a shaft portion 31b that supports the permanent magnet 31a and a shaft portion 31d on which a screw m is formed. The shaft portion 31b and the shaft portion 31d are formed by an elastic member 31c. Concatenated. As the elastic member 31c, a member having flexibility such as silicon rubber and having an appropriate strength capable of stably supporting the workpiece W is used.

In the present embodiment, the permanent magnet 31a is employed as the attracting member. However, the present invention is not limited to this, and it can be attracted by a negative pressure using a rubber member such as a vacuum cup.
The protective member 31g is made of a flexible member such as a masking tape, vinyl tape, or other rubber, and a member that can improve adhesion without damaging the surface of the workpiece W may be used. It is not always necessary depending on the material of the suction member.

  A screw m is formed on the shaft portion 31d. Then, the shaft portion 31d is screwed into the right base 21 and fixed with nuts 31e and 31f (see FIG. 1), and the length of the shaft portions 31b and 31d is adjusted by adjusting the screwing depth of the shaft portion 31d. A variable height adjustment mechanism is configured.

  According to such a configuration, as shown in FIG. 4B, the permanent magnet 31a is attached to the workpiece W by providing the elastic member 31c having flexibility and tiltingly supporting the permanent magnet 31a that is the attracting portion. Since the workpieces can be joined vertically, an excessive load is not applied to the workpiece W, so that the measuring machine can be stably fixed to the workpiece W while preventing deformation of the workpiece W (FIG. 1). reference). Moreover, since the adjustment in the height direction is also possible using the flexibility of the elastic member 31c, the workability is improved and the permanent magnet 31a can be appropriately and easily joined to the workpiece W.

As shown in FIGS. 1 and 2, the measuring machine support members 41 and 42 are fixed to the right end portion and the left end portion of the slide rail M3 by bolts B2 and B2, respectively. A measuring machine adsorbing member 51 is provided on the measuring machine support member 41 at the right end, and a measuring machine adsorbing member 52 is provided on the measuring machine support member 42 at the left end.
Since the measuring device suction members 51 and 52 have the same configuration, the measuring device suction member 51 will be described with reference to FIG.

As shown in FIG. 5, the measuring device attracting member 51 is mounted so as to cover the permanent magnet 51a that constitutes the attracting portion that is attracted to the workpiece W, the shaft portion 51b that supports the permanent magnet 51a, and the permanent magnet 51a. Protective member 51g.
Since a screw m is formed on the shaft 51b, the screw m is screwed into the measuring machine support member 41 and fixed with nuts 51c and 51d (see FIG. 1). Furthermore, the measuring device adsorption member 51 includes a height adjusting mechanism that varies the length of the shaft portion 51b by adjusting the screwing depth of the shaft portion 51b into the measuring device support member 41.

Since the pair of connecting arms 61 and 62 arranged on the left and right have the same configuration, the connecting arm 61 will be described with reference to FIGS. 1 and 6.
As shown in FIGS. 1 and 6, the connecting arm 61 includes a bracket 61a fixed to the measuring machine support member 41, a position adjusting mechanism 611 made of a rod-like bending member, and a tension adjusting nut 61b. Yes.

  As shown in FIG. 6, the position adjustment mechanism 611 includes a plurality of tubular members 611 a, wires 611 b inserted through the plurality of tubular members 611 a, and a lock mechanism 611 c that holds the form of the position adjustment mechanism 611. And.

  The plurality of cylindrical members 611a are arranged in a bead shape so that the end portions 611a1 and 611a2 are joined to each other continuously in the vertical axis direction. One end portion 611a1 (lower end side) of the cylindrical member 611a is formed in a concave shape having a spherical surface, and the other end portion 611a2 (upper end side) is formed in a convex shape having a spherical surface.

  The plurality of cylindrical members 611a have a convex end 611a1 having a spherical surface of one cylindrical member 611a whose end portions 611a1 and 611a2 are close to each other and a concave shape having a spherical surface of the other cylindrical member 611a. The end portions 611a2 are arranged in a bead shape so as to be joined, and constitute a bending member that can be bent freely.

  The wire 611b has an upper end connected to the bracket 61a via a tension adjusting nut 61b, and a lower end connected to a lever 611d constituting the lock mechanism 611c. The tension adjusting nut 61b is a member that moves the position and adjusts the play amount of the wire 611b.

  With this configuration, when the lever 611d is rotated and released to loosen the tension of the wire 611b, the bending member formed of the plurality of tubular members 611a can be freely bent, and the lever 611d is rotated to the lock side. When tension is applied, the end portions 611a1 and 611a2 are pressed against each other so as to be locked while maintaining the form continuously formed by the plurality of cylindrical members 611a.

  In this way, when the tension of the wire 611b is loosened by the position adjusting mechanism 611, the base suction members 31, 32 with respect to the measuring device suction members 51, 52 (FIG. 1) can be freely positioned and moved. When the lever 611d is rotated to the lock side and tension is applied, the positions of the base suction members 31, 32 with respect to the measuring device suction members 51, 52 can be fixed.

  In the present embodiment, the end portions 611a1 and 611a2 of the cylindrical member 611a are formed in a concave shape and a convex shape each having a spherical surface. However, the present invention is not limited to this. For example, the length of the cylindrical member 611a May be shortened to make the end surface flat.

Next, a method for measuring the distortion of the workpiece W using the fixing jig 1 of the measuring machine M according to the embodiment of the present invention will be described mainly with reference to FIG.
As shown in FIG. 1, the operator (not shown) fixes the right end portion of the slide rail M3 of the measuring machine M to the measuring machine support member 41 of the fixing jig 1 with the bolt B2, and slides on the measuring machine support member 42. The left end of the rail M3 is fixed with the bolt B2, and the measuring machine M is mounted on the fixing jig 1.
In this way, with the measuring machine M mounted on the fixing jig 1, the measuring machine adsorption members 51 and 52 and the base adsorption members 31 and 32 of the fixing jig 1 are adsorbed to the workpiece W as described below. Then, the distortion of the workpiece W is measured while the measuring element M1 is scanned along the surface to be measured.

  First, the measuring machine support members 41 and 42 are positioned and fixed to the workpiece W. Specifically, as shown in FIG. 1, the worker (not shown) holds the measuring machine support members 41 and 42 or the measuring machine suction members 51 and 52 while the measuring machine suction members 51 and 52 are the workpiece W. Position and adsorb so that it is located in the vicinity of the part to be measured. At this time, the height adjustment mechanism of the measuring device suction members 51 and 52 is adjusted so that the measuring element M1 moves along the measured portion of the workpiece W so that the position of the slide rail M3 is adjusted to the measured portion. (See FIG. 5).

Here, since the measuring device suction members 51 and 52 are attracted to the surface of the workpiece W by magnetic force, the measuring device M can be stably fixed. However, in the workpiece W having a curved surface formed of a vertical surface such as a door panel, If the measuring device suction members 51 and 52 cannot be disposed at appropriate positions, the workpiece W may not be supported and may be displaced during measurement.
For this reason, in order to hold the measuring machine support members 41 and 42 more stably, the base suction members 31 and 32 are arranged at appropriate positions of the workpiece W via the connecting arms 61 and 62 to hold the measuring machine M. There is a need.

  Subsequently, in order to position the base member 2, an operator (not shown) appropriately positions the base member 2 in a state where the levers 611 d of the connecting arms 61 and 62 are loosened, and the base suction members 31 and 32 are moved. The height adjusting mechanism of the base adsorbing members 31 and 32 is adjusted so as to be stably fixed (see FIG. 4A). In this way, the base member 2 is properly positioned, and finally, the lever 611d is rotated to the lock side to apply tension to the wire 611b (FIG. 6) and fix it while maintaining the form formed by the position adjustment mechanism 611. To do.

The fixing jig 1 of the measuring machine M configured as described above has the following operational effects.
That is, the fixing jig 1 is provided with the connecting arms 61 and 62 for connecting and fixing the base member 2 to the measuring machine support members 41 and 42, so that the measuring machine suction member disposed in the vicinity of the measurement range. Since the load acting on the work W from 51 and 52 is released from the connecting arms 61 and 62 to the base suction members 31 and 32 via the base member 2 and dispersed, the load acting on the work W is dispersed to disperse the work W. Deformation can be prevented.

  In addition, by having the position adjusting mechanism 611 that adjusts the positions of the base suction members 31 and 32 with respect to the measuring device suction members 51 and 52, the base suction members 31 and 32 are disposed at appropriate positions on the workpiece W. Can do. For this reason, since the base adsorbing members 31 and 32 can be stably fixed to the workpiece W, the measuring machine M can be firmly held, and an operator can perform measurement alone, thereby improving workability. Reduces man-hours. Then, by fixing the base adsorbing members 31 and 32 to a portion where the rigidity of the workpiece W can be further secured, it is possible to reduce the load applied to the workpiece W and prevent deformation, thereby improving the measurement accuracy. .

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be implemented with appropriate modifications. For example, in the present embodiment, the measuring device suction members 51 and 52, the base suction members 31 and 32, and the connection arms 61 and 62 are arranged one on each of the left and right, but the weight of the measuring device M or Depending on the workpiece W and the range to be measured, one may be used as appropriate, or two or more may be arranged on the left and right respectively.

  In the present embodiment, the measuring device suction members 51 and 52 are sucked to the workpiece W and then the base suction members 31 and 32 are sucked. However, after the base suction members 31 and 32 are sucked to the workpiece W, The measuring machine adsorption members 51 and 52 may be adsorbed, and can be adsorbed first from a site that can be adsorbed stably and appropriately according to the shape of the workpiece W.

  In the present embodiment, the base member 2 is positioned with the lever 611d loosened, and the height adjustment mechanism of the base members 31, 32 is adjusted so that the base adsorbing members 31, 32 can be stably fixed. However, after the base adsorbing members 31 and 32 are fixed with the lever 611d in a tensioned state, the tension adjusting nut 61b can be adjusted and fixed.

  In the present embodiment, the measurement is performed with the lever 611d of the position adjusting mechanism 611 being locked, but the measuring machine suction members 51 and 52 are released without being locked depending on the weight of the measuring machine M and the type of the workpiece W. It is also possible to support and measure the measuring machine M.

  In the present embodiment, the base adsorbing members 31 and 32 are provided with the elastic members 31c, and the measuring device adsorbing members 51 and 52 are not provided with the elastic members 31c. However, the present invention is not limited to this. In addition, the elastic member 31c may not be provided on the base adsorbing members 31 and 32, and the elastic member 31c may be provided on the measuring device adsorbing members 51 and 52.

DESCRIPTION OF SYMBOLS 1 Fixing jig 2 Base member 23 Leaf spring (spring member)
31, 32 Base adsorption member 41, 42 Measuring machine support member 51, 52 Measuring machine adsorption member 61, 62 Connection arm 61a Bracket 611 Position adjustment mechanism 611a Cylindrical member 611a1 End portion 611a2 End portion 611b Wire 611c Lock mechanism 611d Lever M Measurement Machine (contact strain measuring machine)
W Work

Claims (5)

A fixing jig for fixing a contact-type strain measuring machine to a workpiece,
A base member;
A base adsorbing member that is provided on the base member and is detachably adsorbed and fixed to the workpiece;
A measuring instrument support member for supporting the contact-type strain measuring instrument;
A measuring device adsorbing member that is provided on the measuring device support member and is detachably adsorbed and fixed to the workpiece;
A connecting arm for connecting and fixing the base member to the measuring machine support member,
The connecting arm has a position adjusting mechanism for adjusting the position of the base suction member with respect to the measuring device suction member;
Fixing jig for contact-type strain measuring machine. The base adsorbing member comprises a pair of base adsorbing members disposed apart from each other,
The base member has one base member provided with one base adsorption member of the pair of base adsorption members, and the other base member provided with the other base adsorption member,
Connecting the one base member and the other base member with a spring member;
The fixing jig of the contact-type strain measuring machine according to claim 1. The position adjustment mechanism is composed of a rod-shaped bending member whose form can be fixed in a freely bent state,
A plurality of cylindrical members arranged in a rosary shape so that the ends are joined to each other continuously in the vertical axis direction;
A wire that is inserted inside the plurality of cylindrical members and connects the plurality of cylindrical members;
A lock mechanism that applies tension to the wire and presses the end portions against each other so as to hold the form continuously formed by the plurality of cylindrical members;
The fixture for a contact-type strain measuring machine according to claim 1, wherein the fixing jig is provided. The base adsorbing member and / or the measuring device adsorbing member includes an adsorbing portion adsorbed to the workpiece and a shaft portion supporting the adsorbing portion,
4. The contact strain measuring machine according to claim 1, wherein the shaft portion is provided with a height adjusting mechanism that varies a length of the shaft portion. 5. jig. The base adsorbing member and / or the measuring device adsorbing member includes an adsorbing portion adsorbed to the workpiece and a shaft portion supporting the adsorbing portion,
The shaft portion is provided with an elastic member that supports the suction portion so as to be tiltable,
The fixing jig for a contact-type strain measuring machine according to any one of claims 1 to 4, wherein:

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