JP2011106993A - Support for measuring apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support for a measuring apparatus easily movable with a measuring apparatus loaded thereon and stably installable on a working surface. <P>SOLUTION: The support includes a stand 1 with the measuring apparatus 2 loaded on its upper face 1A, while its lower face 1B mounted on a working surface 3 made of metal; a plurality of swivel wheels 4, provided on the stand so as to allow their outer circumferential surfaces to project from the lower face of the stand; energizing means 5 for severally energizing the swivel wheels, in a direction in which the circumferential surfaces of the swivel wheels project from the lower face of the stand; a magnetic attractor 7, with its attraction face 7A fronting on the lower face of the stand and with its attractive powers turnable on/off by operating an operation part 6; and a remover 8 for removing energizing force of the energizing means severally exerted on the swivel wheels, when the attractive powers of the magnetic attractor are in an on state, while the attraction face and the working surface are in a together attracted state. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a support device for a measuring instrument.

  For example, a three-dimensional shape measuring apparatus may be used to measure a measurement object using a measuring device (see, for example, Patent Document 1). When measuring an object to be measured using a measurement device, if the object to be measured is a large object, the measurement device is often placed on a work surface of a work table such as a surface plate by placing the measurement device on a base. The gantry is heavy because it requires a stable state without shaking even when the measuring device is mounted. For example, when the measuring instrument is a three-dimensional measuring apparatus and the object to be measured is a large object and it is necessary to measure a large number of places, it is necessary to move the three-dimensional measuring apparatus to perform measurement.

JP 2007-292474 A

However, when trying to move a measuring device mounted on such a heavy pedestal, the pedestal is moved after the measuring device is lowered from the pedestal, but it cannot be easily moved due to the weight of the pedestal. After moving, the measuring device had to be set on the frame again, which was cumbersome.
In addition, some gantry is equipped with a magnet adsorption part to fix the position of the gantry with respect to the work surface, but in the case of a gantry equipped with such a magnet adsorption part, the magnet's adsorption force is taken into consideration. Without it, smooth movement cannot be achieved.
The present invention provides a support device for a measurement device that is easily movable with the measurement device mounted thereon and that can be stably installed on a work surface.

In order to solve the above-described problems, the present invention provides a pedestal on which a measuring device is mounted on an upper surface and a lower surface is placed on a metal work surface, and a plurality of the pedestals provided on the pedestal so that an outer peripheral surface thereof can protrude from the lower surface of the gantry The universal wheel, urging means for urging the universal wheel in a direction in which the outer peripheral surface of the universal wheel protrudes from the lower surface of the gantry, and an adsorption surface facing the lower surface of the gantry, and operating the operation unit When the attracting force of the magnet attracting part capable of turning on / off the attracting force and the attracting force of the magnet attracting part are in the on state, and the attracting surface and the working surface are in the attracting state, It has the release part which cancels | releases, It is characterized by the above-mentioned.
In the support device for a measuring instrument according to the present invention, the release portion is movable in the urging direction of each universal wheel by the urging means, and a pressure receiving portion that receives the urging force of the urging means is formed at one end, It has the moving body in which the wheel receiving part which contacts a free wheel in the other end was formed, and the lock part which hold | maintains a moving body in the position spaced apart from the free wheel.
The support device for a measuring instrument according to the present invention is characterized by having an adjusting portion for adjusting each urging force of the urging means.

According to the present invention, the gantry on which the measuring device is mounted includes a plurality of free wheels urged by the urging means in the direction in which the outer peripheral surface protrudes from the lower surface of the gantry. The mount can be easily moved. In addition, when the attracting force of the magnet attracting part is in the on state and the attracting surface and the work surface are attracted, the biasing force from the biasing means applied to each of the free wheels is released by the releasing unit, so the magnet attracting force Therefore, it is possible to stably install the gantry on the work surface.
According to the present invention, since the adjusting portion for adjusting the urging force of the urging means is provided, in addition to the above effects, the amount of protrusion of the free wheel from the bottom surface of the gantry and the attitude of the mounted measuring device are adjusted. be able to.

It is a figure which shows schematic structure of the measuring instrument and its support apparatus as one Embodiment of this invention. It is a block diagram when the support apparatus which removed a part of universal ring is seen from the downward direction. FIG. 2 is an enlarged cross-sectional view taken along the line AA in FIG. It is an expanded sectional view which shows the state at the time of fixation by the internal structure and fixing | fixed part of a support apparatus. It is an enlarged view which shows a structure and operation | movement of an adjustment part, (a) shows the state of the adjustment part at the time of a locked state by an adsorption member, (b) shows the state at the time of the reaction force adjustment start of the urging means by an adjustment part. (C) shows the state when the reaction force adjustment of the urging means by the adjustment unit is completed.

  Embodiments of the present invention will be described below with reference to the drawings. The support device shown in FIG. 1 is used for a three-dimensional measuring device 2 which is an example of a measuring device. The measuring instrument is not limited to the three-dimensional measuring apparatus 2 and may be any measuring instrument that must move when measuring the object to be measured.

  The support device includes a gantry 1 on which the lower part 2A of the three-dimensional measuring device 2 is mounted on an upper surface 1A (hereinafter referred to as a “cradle upper surface 1A”). ) Is placed on a work surface 3A which is an upper surface of a metal surface plate 3 which is a work table. In this embodiment, the gantry 1 has the same shape as the lower part 2 </ b> A of the three-dimensional measuring device 2 and has a cylindrical shape.

  The gantry 1 is provided with a plurality of free wheels 4 whose outer peripheral surfaces 4a can be protruded from the lower surface 1B of the gantry, and each of the free wheels 4 in a direction in which the outer peripheral surface 4a of each free wheel 4 protrudes from the lower surface 1B. A plurality of coil springs 5 serving as urging means for urging, and a well-known magnet attracting portion 7 having an attracting surface 7A facing the mount lower surface 1B and capable of turning on / off the attracting force by operating the operating portion 6; When the attracting force of the magnet attracting portion 7 is on and the attracting surface 7A and the work surface 3A are attracted, a plurality of releasing portions 8 for releasing the biasing force from each coil spring 5 applied to each of the free wheels 4 is provided. And the some adjustment part 9 which adjusts the urging | biasing force of each coil spring 5, respectively is provided.

  In this embodiment, the free wheel 4 is a metal sphere, and four are arranged at equal intervals in the circumferential direction of the gantry 1, but the number of the free wheels 4 is not limited to four, but at least three. I just need it. In this embodiment, since the four free wheels 4 are provided, the gantry 1 is also provided with four coil springs 5, release parts 8, and adjustment parts 9.

  In the gantry 1, four holes 11 are formed at equal intervals in the circumferential direction from the gantry upper surface 1A to the gantry lower surface 1B (see FIG. 2). As shown in FIG. 2, a circular recess 13 having the same center as each of the holes 11 is formed on the gantry lower surface 1 </ b> B located at the periphery of each hole 11. As shown in FIG. 3, screw holes 12 having a diameter smaller than that of the central portion and having a thread portion formed therein are formed in the upper portion of each hole 11. A coil spring 5 is inserted into each hole 11.

  Each adjustment portion 9 is configured by an adjustment member 90 interposed between one end 5 a of each coil spring 5 and each screw hole 12. Each adjustment member 90 has a cylindrical shape in which a pressure receiving portion 91 that receives a biasing force from one end 5a of the coil spring 5 is formed on one side, and a nut portion 92 that is screwed into the screw hole 12 is formed on the other side. An engagement hole 93 with which the tool 94 is engaged is formed in the upper portion of the nut portion 92. In this embodiment, since the tool 94 is assumed to be a hexagon wrench, the engagement hole 93 is a hexagonal hole. The adjustment member 90 is adjusted in the vertical position in the hole 11 by the tool 94 being inserted from the screw hole 12 and rotating with the tool tip engaged in the engagement hole 93. By adjusting the position of the adjusting member 90, the urging force of each coil spring 5 is adjusted. Further, by adjusting the urging force of each coil spring 5, the load balance applied to the gantry 1 from the three-dimensional measuring device 2 can be adjusted, so that the posture of the three-dimensional measuring device 2 can be adjusted.

  Each release portion 8 is inserted into each hole 11, and a moving body 80 interposed between each free wheel 4 and the other end 5 b of each coil spring 5, and the moving body 80 from the free wheel 4. And a lock portion 83 that is held at a spaced position.

  Each moving body 80 is made of resin, and is inserted into the hole 11 so as to be movable in a direction in which the coil spring 5 biases the universal wheel 4. Each moving body 80 has a pressure receiving portion 81 that is engaged with the other end 5b of the coil spring 5 at one end 80A and receives the urging force of the coil spring 5, and a wheel receiving portion 82 that contacts the universal wheel 4 at the other end 80B. Are formed respectively. Each wheel receiving portion 82 is formed in a hemispherical shape so as to contact the upper half of each universal wheel 4. Link members 14 each having a hole smaller in diameter than the diameter of each universal ring 4 are arranged in the recess 13 formed on the gantry lower surface 1B. The link members 14 have the recesses 13 in a state in which the coil spring 5 and the moving body 80 are inserted into the holes 11, the free wheel 4 is set in the wheel receiving part 82, and is in contact with each free wheel 4 from the mount lower surface 1 </ b> B. By fixing to, it functions as a retaining member so that the free wheel 4 and the coil spring 5 do not jump out of the hole 11.

  The amount of protrusion of each universal wheel 4 from the gantry lower surface 1B corresponds to the levitation amount X between the gantry lower surface 1B and the work surface 3A. In this embodiment, the buoyancy X is set to 2 to 3 mm.

  Each lock portion 83 includes a reference hole 84 that penetrates the moving body 80 in the radial direction, a lock screw hole 85 that is parallel to the reference hole 84 and penetrates from the gantry side surface 1C to each hole 11, and a lock screw. And a handle 86 having a shaft portion 86 </ b> A that is screwed into the hole 85. When the handle 86 is rotated in the tightening direction while being screwed into the locking screw hole 85, the shaft portion 86 </ b> A moves toward the hole 11, and the shaft tip enters the reference hole 84 formed in the moving body 80. It is configured as follows. The reference hole 84 and the locking screw hole 85 are formed with their centers offset in the biasing direction of the coil spring 5 (vertical direction in the drawing). This offset amount X1 is determined by operating the handle 86 when the magnet attracting portion 7 is locked, the attracting surface 7A is attracted to the work surface 3A, and the gantry lower surface 1B is fixed to the work surface 3A. This is the amount by which the wheel receiving portion 82 is floated from each universal wheel 4 when the tip of the handle shaft portion 86A is inserted into 84.

  That is, as shown in FIG. 5A, the lock portion 8 has the reference hole 84 and the lock screw hole 85, the suction surface 7A is in the suction state on the work surface 3A, and the gantry lower surface 1B is fixed to the work surface 3A. In this state, it is shifted up and down by the offset amount X1, and by operating the handle 85 and inserting the tip of the handle shaft portion 85a into the reference hole 84 as shown in FIGS. 5 (b) and 5 (c), The movable body 80 is lifted against the biasing force of the coil spring 5 by an offset amount.

  According to the support device having such a configuration, the gantry 1 on which the three-dimensional measuring device 2 is mounted includes the plurality of free wheels 4 urged by the coil springs 5 in the direction in which the outer peripheral surface projects from the gantry lower surface 1B. Therefore, when the magnet attracting part 7 is turned off, the gantry 1 can be easily moved on the work surface 3A with the three-dimensional measuring device 2 mounted.

  When the operation unit 6 of the magnet attraction unit 7 is operated at the measurement position and the attraction force is turned on, a magnetic force acts between the attraction surface 7A and the work surface 3A, and as shown in FIG. 7A is in an attracted state on the work surface 3A. For this reason, the gantry 1 is lowered and is fixed on the work surface 3A. If the handle portion 86 of the release portion 8 is operated when the attracting force of the magnet attracting portion 7 is on and the attracting surface 7A and the work surface 3A are attracted, the shaft portion 86A is moved to the reference hole of the moving body 80. By being inserted into 84, the moving body 80 is lifted and a gap is formed between the free wheel 4 and the wheel receiving portion 82. For this reason, the force resisting the attracting force of the magnet attracting portion 7, that is, the urging force from the coil spring 5 applied to each of the universal wheels 4, is eliminated, and the gantry 1 is stably attracted and installed on the work surface 3A. Can do.

  Moreover, since the adjustment part 9 which adjusts each urging | biasing force of the coil spring 5 is mounted | worn with the mount 1, the protrusion amount X of the free wheel 4 from the mount lower surface 1B and the attitude | position adjustment of the mounted three-dimensional measuring apparatus 2 are carried out. It can be carried out.

DESCRIPTION OF SYMBOLS 1 Mount 1A Upper surface 1B Mount lower surface 2 Measuring device 3A Work surface 4 Free wheel 4a Outer surface 5 Energizing means 6 Operation part 7 Magnet adsorption part 7A Adsorption surface 8 Release part 9 Adjustment part 80 Moving body 80A One end 80B Other end 81 Pressure receiving part 82 Wheel receiving part 83 Locking part

Claims (3)

A gantry on which the measuring device is mounted on the upper surface and the lower surface is placed on a metal work surface;
A plurality of free wheels provided on the frame such that an outer peripheral surface thereof can protrude from the bottom surface of the frame;
Urging means for urging each of the free wheels in a direction in which an outer peripheral surface of the free wheel protrudes from the lower surface of the gantry;
A magnet attracting portion whose attracting surface faces the bottom surface of the gantry and capable of turning on / off the attracting force by operating the operation unit;
A release portion for releasing the urging force from the urging means applied to each of the universal wheels when the attraction force of the magnet attraction portion is in an on state and the attraction surface and the work surface are in an attraction state; A support device for a measuring instrument. In the support apparatus of the measuring instrument of Claim 1,
The release unit is
The urging means is movable in the direction of urging each universal wheel, a pressure receiving portion that receives the urging force of the urging means is formed at one end, and a wheel receiving portion that contacts the universal wheel at the other end. A formed moving body;
An apparatus for supporting a measuring instrument, comprising: a lock portion that holds the movable body at a position separated from the universal wheel. The support device for a measuring instrument according to claim 1 or 2,
An apparatus for supporting a measuring instrument, comprising: an adjustment unit that adjusts the urging force of each of the urging means.

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