JP2008151656A - Measurement auxiliary table - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a measurement auxiliary table capable being smoothly moved on a surface plate and fixed by suction independently of the material of the surface plate. <P>SOLUTION: The measurement auxiliary table 1 includes a table body 10 on which either a measurement object or a measuring instrument is placed. The table body 10 includes: a jetting part 13 provided on an opposing surface 10A of the table body 10 disposed opposite the surface plate and jetting compressed air toward the surface plate and a hollow part 10B forming a closed space 10C between it and the surface plate; an air compressor pump 14 including an air intake part 143 and a compressed air blow-out part 144; and a power supply 15 driving the air compressor pump 14. The air blow-out part 144 of the air compressor pump 14 is communicated with the jetting part 13. The air intake part 143 of the air compressor pump 14 is communicated with the hollow part 10B via a communication means 17. The communication means 17 includes a switch means 174 by which the air intake part 143 of the air compressor pump 14 and the hollow part 10B communicate with the atmosphere. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a measurement auxiliary table. Specifically, the present invention relates to a measurement auxiliary table used when performing measurement while moving either one of the object to be measured and the measuring device with respect to the other on the surface plate.

Conventionally, a magnetic stand is known as a device for holding a measuring instrument such as a dial gauge.
The magnetic stand is equipped with a base body provided with a magnetic adsorption means for generating an attractive force by a magnetic force, a support provided on the upper surface of the support body, and a measuring instrument provided so as to be movable up and down along the support. It is the structure provided with the bracket for.
In use, the base body with a measuring instrument (dial gauge, etc.) fixed to the bracket is moved to any location on the surface plate. The base body is attracted and fixed to the surface plate by the magnetic adsorption means, and the measurement work of the object to be measured is performed.

Such a magnetic stand uses a magnetic force to attract and fix the base body to the surface plate, so that the object to be fixed (that is, the surface plate) is limited to the magnetic material.
Therefore, there has been proposed a vacuum suction tool stand that includes vacuum suction means for vacuum-sucking the pedestal body with respect to the object, and can squeeze and fix the pedestal body regardless of the material of the object to be fixed (Patent Document 1). In addition to the vacuum suction means, the third embodiment of Patent Document 1 also discloses a vacuum suction tool stand that includes an air ejection hole that ejects compressed air toward the surface plate and smoothly moves the base body on a standard surface. Has been.

Japanese Patent Laying-Open No. 2005-212031

  However, in the vacuum suction tool stand described in Patent Document 1, an external suction pump is used as a vacuum suction means, and the base body and the vacuum pump are connected by a tube. Moreover, when jetting compressed air, a tube to which an air compression pump is connected separately is required. When these tubes are connected to the base body, there is a problem that the movement of the base body is hindered.

  An object of the present invention is to provide an auxiliary table for measurement that solves the above-described problems, can move smoothly on the surface plate, and can be fixed by suction without being influenced by the material of the surface plate.

  The auxiliary table for measurement of the present invention is an auxiliary table for measurement used when performing measurement while moving either one of the object to be measured and the measuring device with respect to the other on the surface plate. A table body on which either one of the object and the measuring instrument is placed, and the table body is provided on an opposing surface of the table body facing the surface plate, and forms a sealed space with the surface plate. An air compression pump having an air suction portion and a compressed air blowing portion, and a power source for driving the air compression pump. The blowing portion of the air compression pump is communicated with the ejection portion, the suction portion of the air compression pump is communicated with the hollow portion via a communicating means, and the communicating means is the air compression pump Large suction part and cavity Characterized in that it has a switching means for communicating to.

According to the present invention, the base body of the auxiliary table for measurement includes an ejection part that ejects compressed air toward the surface plate, an air compression pump having an air suction part and a compressed air blowing part, and an air compression pump. Since the blow-out part of the air compression pump communicates with the blow-out part provided on the opposing surface of the base body, the auxiliary measurement base can move smoothly on the surface plate.
That is, the air compression pump driven by the power source can form an air film between the base body and the surface plate by ejecting compressed air from the blowing portion communicating with the blowing portion toward the surface plate. The auxiliary table for measurement can move smoothly on the surface plate.

In addition, the base body of the auxiliary table for measurement is provided on the surface of the base body facing the surface plate and includes a cavity that forms a sealed space with the surface plate, an air suction portion, and a compressed air blowing portion. The air compression pump has a power source that drives the air compression pump, and the suction portion of the air compression pump is communicated with the cavity through the communication means, so the base body is vacuum-adsorbed to the surface plate. The auxiliary measuring table can be sucked and fixed without being influenced by the material of the surface plate.
In other words, when the air compression pump is driven by the power source in a state where the opposing surface of the base body is in contact with the surface plate and the sealed space is formed by the cavity and the surface plate, the communication means communicates with the suction portion. Since the air in the hollow portion, that is, the sealed space is sucked and the base body is vacuum-adsorbed to the surface plate, the auxiliary measuring table can be adsorbed and fixed without being influenced by the material of the surface plate.

Further, since the communication means has a switching means for communicating the suction part and the cavity part of the air compression pump to the atmosphere, the single auxiliary air pump provided on the base body can smoothly move the auxiliary table for measurement on the surface plate. It is possible to achieve both simple movement and adsorption fixation to the surface plate of the auxiliary table for measurement.
That is, in a state where the switching means communicates the suction portion and the cavity portion of the air compression pump with the atmosphere, the air compression pump sucks air from the atmosphere and the cavity portion (mainly the atmosphere) and compresses this air. Then, it blows out toward the surface plate from the blowout part that communicates with the blowout part. Thereby, an air film can be formed between the base body and the surface plate, and the auxiliary measuring table can move smoothly on the surface plate.

  On the other hand, when the suction means and the cavity of the air compression pump are shut off from the atmosphere by operating the switching means, the air compression pump sucks air from the cavity and compresses this air from the ejection part communicating with the blowing part. It spouts toward the surface plate. Here, a part of the jetted compressed air returns to the cavity, and the rest is released to the atmosphere, but more air is sucked from the cavity than the air supplied to the cavity. The amount of air squirted from the water gradually decreases. When the force of the blown air is less than the weight of the auxiliary measuring table, the opposing surface of the table main body is brought into contact with the surface plate, and a sealed space is formed by the cavity and the surface plate. Is vacuum-adsorbed to the surface plate.

  As described above, since the ejection of compressed air to the surface plate and the suction of air from the cavity are performed by one air compression pump provided on the base body, the base like the vacuum suction tool stand of Patent Document 1 is used. There is no need to connect the main body and external vacuum pump with a tube, the tube does not hinder the movement of the base body, and a separate air compression pump is connected to eject compressed air to the surface plate. There is no need.

In this invention, it is preferable that the said air compression pump and the said power supply are provided in the said cavity part.
According to such a configuration, since the air compression pump and the power source are provided in the cavity portion, it is not necessary to secure a space for providing the air compression pump and the power source in the base body, so that the space can be omitted. It is possible to reduce the size of the base body.

In this invention, it is preferable that the said air compression pump and the said power supply are provided in the opposite side to the said surface plate on both sides of the said cavity part.
According to such a configuration, since the air compression pump and the power source are provided on the opposite side of the surface plate across the cavity, the base is compared with the case where the air compression pump and the power source are provided in the cavity. The area of the opposing surface of the main body can be reduced.

In this invention, it is preferable that the said switching means has an operation part provided in the outer surface of the said base main body, and switching the state of the said switching means.
According to such a configuration, since the switching unit has the operation unit for switching the state of the switching unit on the outer surface of the base body, it is easy to switch the state of the switching unit when the auxiliary measuring stand is used.

In the present invention, the power source is preferably chargeable.
According to such a configuration, since the power source can be charged, it can be repeatedly used by charging. If a charging circuit is built in the power supply, it can be charged without removing the power supply from the base body, improving usability.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a front view, FIG. 2 is a bottom view, and FIG. 3 is a sectional view taken along line III-III in FIG. 2 of the auxiliary measuring stand 1 according to the first embodiment of the present invention.
As shown in FIG. 1, the auxiliary measuring base 1 includes a base body 10 on which the measuring instrument 3 is placed, and performs measurement while moving the measuring instrument 3 relative to the object 4 to be measured on the surface plate 2. Used when doing.
The base body 10 is formed in a substantially rectangular parallelepiped shape, and a column 11 provided perpendicularly to the upper surface of the table body 10 and a bracket for mounting the measuring instrument 3 that can be moved up and down along the column 11. 12. The lower surface of the base body 10 is a facing surface 10 </ b> A that faces the surface plate 2.
Further, as shown in FIGS. 2 and 3, the base body 10 includes a cavity portion 10 </ b> B, an ejection portion 13, an air compression pump 14, and a power source 15 that drives the air compression pump 14.

The cavity 10 </ b> B is a substantially rectangular parallelepiped cavity provided at a substantially central portion of the facing surface 10 </ b> A of the base body 10, and a sealed space 10 </ b> C can be formed between the surface plate 2.
The ejection part 13 has an air nozzle 131 for ejecting compressed air toward the surface plate 2. The air nozzle 131 is provided at the four corners of the facing surface 10 </ b> A such that one end surface of the substantially cylindrical shape is flush with the facing surface 10 </ b> A of the base body 10. The air nozzle 131 has an air introduction hole 131A on the end surface opposite to the facing surface 10A, and an air blowing port 131B communicating with the introduction hole 131A on the facing surface 10A side and having a smaller diameter than the introduction hole 131A.

The air compression pump 14 and the power source 15 are provided in the horizontal direction in the cavity 10B.
The air compression pump 14 includes a pump 141 and a motor 142 that drives the pump 141. The pump 141 has a substantially rectangular parallelepiped outer shape, and has a substantially circular air suction part 143 and a compressed air blowing part 144 on one end face thereof. The motor 142 has a substantially cylindrical outer shape and is driven by electric power from the power supply 15.
The pump 141 and the motor 142 are connected via a power transmission unit 145, and the power of the motor 142 drives the pump 141 via the power transmission unit 145. The pump 141 sucks air from the suction part 143, compresses the sucked air, and discharges it from the blowing part 144.
Further, a switch 16 for switching the power supply state from the power supply 15 to the motor 142 to start or stop the driving of the pump 141 is provided on the side surface of the base body 10.
The switch 16 has a contact in the hollow portion 10B and an operation lever on the side surface of the base body 10. The wiring connecting the contact of the switch 16 and the operation lever is provided so as to penetrate the inside of the base body 10. However, since a structure for blocking air is provided between the wiring and the base body 10, the hollow portion 10B and the atmosphere are blocked.
The power supply 15 has a built-in charging circuit, can be electrically connected to the outside by connection means (not shown), and is configured to be rechargeable.

The blowing part 144 of the air compression pump 14 is communicated with the blowing part 13 through the pipe 146 and the internal pipe 132.
The pipe 146 is an L-shaped tubular member having a substantially circular cross section, and communicates the blowing part 144 of the air compression pump 14 and the internal pipe 132.
As shown in FIG. 2, the internal pipe 132 is disposed inside the base body 10 in a substantially rectangular shape along the side surface of the base body 10. The internal pipe 132 communicates with the pipe 146 by a branch part 133 that is a pore extending to the hollow part 10B. Moreover, the internal piping 132 has the vertical piping 134 in each of the substantially rectangular four corners, as shown in FIG. The air nozzle 131 is provided at the end of the vertical pipe 134 on the facing surface 10A side.

As shown in FIG. 2, the suction portion 143 of the air compression pump 14 is communicated with the cavity portion 10 </ b> B via the communication means 17.
The communication unit 17 includes pipes 171 and 172, an internal pipe 173, and a switching unit 174.
The pipe 171 is a tube-shaped member that allows the suction portion 143 of the air compression pump 14 and the switching means 174 to communicate with each other. The internal pipe 173 is a hole having a substantially circular cross section that is provided on the side surface of the base body 10 and communicates the atmosphere with the cavity 10B. The pipe 172 is an L-shaped tubular member having a substantially circular cross section, and communicates the internal pipe 173 and the switching means 174.

Cross-sectional views of the switching means 174 are shown in FIGS.
As shown in FIGS. 4A and 4B, the switching means 174 has a substantially cylindrical valve body 175 and a substantially cylindrical tubular body 176 provided so as to cover the valve body 175. .
The valve body 175 has a substantially cylindrical hole 175A provided at the end of the cavity 10B side so as to overlap the shaft of the valve body 175 and communicating with the cavity 10B. At the end of the hole portion 175A opposite to the hollow portion 10B, a hole 175B having a circular cross section provided perpendicular to the axis of the valve body 175 and penetrating the valve body 175, and the shaft and hole 175B of the valve body 175 are provided. A hole 175 </ b> C that is provided vertically and does not penetrate the valve body 175 is formed. Further, a knob 177 for rotating the valve body 175 is provided at the end of the valve body 175 opposite to the hollow portion 10B. The knob 177 corresponds to an operation unit 177A that is provided on the outer surface of the base body 10 and switches the state of the switching means 174.

The cylindrical body 176 supports the valve body 175 so as to be rotatable about the axial direction, and has two cylindrical branches 176A and 176B communicating with the hole 175B of the valve body 175 at the end on the cavity 10B side. Have
Here, as shown in FIG. 2, the hole 175 </ b> A of the valve body 175 communicates with the pipe 171, and the branch part 176 </ b> A of the cylindrical body 176 communicates with the pipe 172. On the other hand, the branch portion 176B communicates with the hollow portion 10B without passing through the piping.
Therefore, in the state of FIG. 4, the switching means 174 allows the suction part 143 and the cavity part 10B of the air compression pump 14 to communicate with the atmosphere.
In FIG. 4, when the knob 177 is pulled to the near side and the valve body 175 is rotated 90 degrees, the state shown in FIG. 5 is obtained. In this state, the switching means 174 allows the suction portion 143 and the cavity portion 10B of the air compression pump 14 to communicate with each other and is blocked from the atmosphere.

A method of moving or fixing the measuring device 3 with respect to the object 4 to be measured on the surface plate 2 using the measurement auxiliary table 1 will be described.
In order to move the auxiliary measuring stand 1, the switching means 174 is operated to the state shown in FIG. 4, and the suction part 143 and the cavity part 10 </ b> B of the air compression pump 14 are communicated with the atmosphere. The switch 16 is operated to drive the air compression pump 14 by supplying power from the power supply 15. The air compression pump 14 sucks air from the atmosphere and the cavity portion 10 </ b> B (mainly the atmosphere), compresses the air, and ejects the air toward the surface plate 2 from the ejection portion 13 communicating with the blowing portion 144. Thereby, as shown in FIG. 1, an air film can be formed between the base body 10 and the surface plate 2, and if the auxiliary measuring table 1 is pushed by hand, the surface can be smoothly moved on the surface plate 2. be able to.
In this case, a part of the air ejected from the ejection part 13 returns into the cavity part 10B and acts to slightly increase the pressure in the cavity part 10B from atmospheric pressure, but there is no problem in practical use.

  In order to fix the auxiliary measuring stand 1 in FIG. 1, after the auxiliary measuring stand 1 is moved to a desired location on the surface plate 2, the switching means 174 is operated and the state shown in FIG. The suction part 143 and the cavity part 10B of the air compression pump 14 are shut off from the atmosphere. The air compression pump 14 sucks air from the cavity portion 10 </ b> B, compresses the air, and ejects the air toward the surface plate 2 from the ejection portion 13 communicating with the blowout portion 144. Here, a part of the jetted compressed air returns to the cavity 10B, and the rest is released to the atmosphere, but more air is sucked from the cavity 10B than the air supplied to the cavity 10B. The amount of air ejected from the ejection part 13 gradually decreases. Then, when the force of the ejected air is less than the weight of the auxiliary measuring stand 1, as shown in FIG. 6, the facing surface 10 </ b> A of the stand main body 10 is brought into contact with the surface plate 2, so A closed space 10 </ b> C is formed by the board 2, and the base body 10 is vacuum-sucked to the surface plate 2.

According to the present embodiment, there are the following effects.
(1) The air compression pump 14 driven by the power supply 15 blows out compressed air from the blowing portion 13 communicating with the blowing portion 144 toward the surface plate 2, thereby causing air between the base body 10 and the surface plate 2. A film can be formed, and the auxiliary measuring stand 1 can move smoothly on the surface plate 2.
(2) When the air compression pump 14 is driven by the power source 15 in a state where the facing surface 10A of the base body 10 is brought into contact with the surface plate 2 and the sealed space 10C is formed by the cavity 10B and the surface plate 2, Since the air in the cavity 10B, that is, the sealed space 10C communicated with the suction part 143 by the communication means 17 is sucked and the base body 10 is vacuum-adsorbed to the surface plate 2, the auxiliary measuring table 1 is attached to the surface plate 2. Can be fixed by suction regardless of the material.
(3) Since the communication means 17 includes the switching means 174 for communicating the suction portion 143 and the cavity portion 10B of the air compression pump 14 with the atmosphere, the surface plate 2 is provided by the single air compression pump 14 provided on the base body 10. It is possible to achieve both the smooth movement of the auxiliary measuring stand 1 and the suction fixing of the auxiliary measuring stand 1 to the surface plate 2.

(4) Since the ejection of the compressed air to the surface plate 2 and the suction of the air from the cavity 10B are performed by one air compression pump 14 provided in the base body 10, the vacuum suction tool stand of Patent Document 1 Thus, it is not necessary to connect the base body 10 and the external vacuum pump by a tube, and the movement of the base body 10 is not hindered by the tube. There is no need to connect an air compression pump.
(5) Since the switching unit 174 has the operation unit 177A (knob 177) for switching the state of the switching unit 174 on the outer surface of the base body 10, the switching of the state of the switching unit 174 when the auxiliary measuring stand 1 is used. Easy.
(6) Since the power supply 15 can be charged, it can be used repeatedly by charging. Since the charging circuit is built in the power source 15, the power source 15 can be charged without being removed from the base body 10, and the usability is improved.
(7) Since the air compression pump 14 and the power source 15 are provided in the hollow portion 10B, it is not necessary to secure a space for providing the air compression pump 14 and the power source 15 in the base body 10, so that the space may be omitted. It is possible to reduce the size of the base body 10.

[Second Embodiment]
A cross-sectional view of the auxiliary measuring stand 1 according to the second embodiment of the present invention viewed from the side is shown in FIG. 7A, and a bottom view is shown in FIG. 7B.
Here, the present embodiment is different from the first embodiment described above in the shape of the base body 10 and the arrangement of each component. Since other configurations and operations are the same, the same reference numerals are given and description thereof is omitted.
The base body 10 of the present embodiment has a substantially cylindrical outer shape. In FIG. 7, although the support | pillar 11 and the bracket 12 are provided in the upper surface of the base main body 10, description is abbreviate | omitted.
The cavity 10B is a cavity having a substantially circular cross section provided at a substantially central portion of the facing surface 10A of the base body 10. Four ejection portions 13 are provided at equal intervals in the circumferential direction of the facing surface 10A.

The air compression pump 14 and the power source 15 are provided on the opposite side of the surface plate 2 with the cavity 10 </ b> B of the base body 10 interposed therebetween. Specifically, the air compression pump 14 and the power source 15 are provided inside the base body 10 separately from the cavity 10B and in a substantially cylindrical cavity 10D communicating with the atmosphere through an opening (not shown).
As shown in FIG. 7 (A), the internal pipe 132 is formed in a cross shape when viewed from below, as shown in FIG. 7 (B), inside the base body 10 and between the cavity 10B and the cavity 10D. Arranged. And the vertical piping 134 and the air nozzle 131 are provided in the four edge parts.
The branch portion 176A of the switching means 174 communicates with the hollow portion 10D without passing through the piping. As described above, since the cavity portion 10D communicates with the atmosphere, the branch portion 176A also communicates with the atmosphere via the cavity portion 10D. A branch portion 176B of the switching means 174 communicates with the cavity portion 10B via an internal pipe 178.

According to this embodiment, in addition to the effects (1) to (6) of the first embodiment described above, the following effects can be obtained.
(8) Since the air compression pump 14 and the power source 15 are provided on the opposite side of the surface plate 2 across the cavity 10B, the air compression pump 14 and the power source 15 are more The area of 10 A of opposing surfaces of the main body 10 can be made small.

[Third Embodiment]
FIG. 8 is a bottom view of the auxiliary measuring stand 1 according to the third embodiment of the present invention, and FIG. 9 is a sectional view taken along the line IX-IX of FIG.
Here, the present embodiment is different from the first embodiment described above in the shape of the base body 10 and the arrangement of each component. Since other configurations and operations are the same, the same reference numerals are given and description thereof is omitted.
As shown in FIG. 8, the base body 10 of the present embodiment has a substantially rectangular parallelepiped outer shape that is longer than the first embodiment. In FIG. 9, columns 11 and brackets 12 are provided on the upper surface of the base body 10, but the description is omitted.
The air compression pump 14 and the power supply 15 are provided in a substantially rectangular parallelepiped cavity 10E that is formed adjacent to the cavity 10B of the base body 10 and communicates with the atmosphere through an opening (not shown).

The hole 175A of the switching means 174 communicates with the cavity 10B via the internal pipe 179. The branch portion 176A of the switching means 174 communicates with the hollow portion 10E without passing through the piping. As described above, since the cavity portion 10E communicates with the atmosphere, the branch portion 176A also communicates with the atmosphere via the cavity portion 10E. The branch part 176 </ b> B of the switching means 174 communicates with the suction part 143 of the air compression pump 14 via the pipe 171.
Even in such a communication state of the switching means 174, the switching means 174 has the same operations and effects because it is common to the above-described embodiments in that the branch portion 176A communicates with the atmosphere.
Therefore, according to the present embodiment, the same effects as the effects (1) to (6) of the first embodiment described above can be obtained.

In addition, this invention is not limited to the said embodiment, Including other structures etc. which can achieve the objective of this invention, the deformation | transformation etc. which are shown below are also contained in this invention.
(i) In each of the above-described embodiments, the base body 10 includes the support 11 and the bracket 12, and the measuring device 3 fixed to the bracket 12 is moved with respect to the object 4 to be measured. Absent.
For example, the base body 10 may move the object 4 placed on the upper surface thereof with respect to the measuring device 3 fixed to the surface plate 2. Even in this case, the auxiliary measuring stand 1 can move either the device under test 4 or the measuring device 3 relative to the other. In such a case, the support column 11 and the bracket 12 can be omitted.

(ii) The number and arrangement of the ejection portions 13 may be any as long as they can eject compressed air toward the surface plate 2 and form an air film between the base body 10 and the surface plate 2. It is not limited to what was described in each embodiment.
For example, if each ejection part 13 is arranged in a well-balanced manner with respect to the base body 10 and the amount of air ejected from each ejection part 13 is made uniform, it is formed between the base body 10 and the surface plate 2. Since the thickness of the air film is constant and the posture of the auxiliary measuring stand 1 is stabilized, smoother movement can be performed.

(iii) The switching means 174 is not limited to the one shown in each of the above embodiments, as long as the suction unit 143 and the cavity 10B of the air compression pump 14 are communicated with or blocked from the atmosphere by switching.
For example, the suction portion 143 and the hollow portion 10B are communicated with one pipe, and a branch portion that communicates with the atmosphere is provided in the pipe. It is also possible to provide a shielding door that can be opened and closed in close contact with the opening of the branch portion to the atmosphere, and this may be used as the switching means 174.
The switching means 174 is, for example, a cock that connects any two of the suction portion 143, the cavity portion 10B, and the atmosphere of the air compression pump 14 and blocks the remaining one from the other two. May be.
Even when the auxiliary measuring stand 1 includes such switching means, it is possible to obtain the same excellent actions and effects as those of the above-described embodiments.

  The present invention can be used as an auxiliary table for measurement used when performing measurement while moving either one of the object to be measured and the measuring device with respect to the other on the surface plate.

The front view of the auxiliary table for measurement concerning a 1st embodiment of the present invention. The bottom view of the auxiliary table for measurement concerning a 1st embodiment of the present invention. III-III sectional view taken on the line of FIG. Sectional drawing of the switching means of the auxiliary table for a measurement which concerns on 1st Embodiment of this invention. Sectional drawing of the switching means of the auxiliary table for a measurement which concerns on 1st Embodiment of this invention. The front view of the auxiliary table for measurement concerning a 1st embodiment of the present invention. The bottom view and sectional drawing seen from the side surface of the auxiliary table for a measurement concerning 2nd Embodiment of this invention. The bottom view of the auxiliary table for measurement concerning a 3rd embodiment of the present invention. IX-IX sectional view taken on the line of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Measurement support stand, 2 ... Surface plate, 3 ... Measuring device, 4 ... Object to be measured, 10 ... Base body, 10A ... Opposite surface, 10B ... Hollow part, 10C ... Sealed space, 13 ... Jetting part, 14 ... Air compression pump, 15 ... power source, 17 ... communication means, 143 ... suction part, 144 ... blowing part, 174 ... switching means, 177A ... operation part.

Claims (5)

On the surface plate, an auxiliary table for measurement used when measuring while moving either one of the object to be measured and the measuring device with respect to the other,
A table body on which either one of the object to be measured and the measuring device is placed;
The base body is
A cavity portion that is provided on the facing surface of the base body facing the surface plate, forms a sealed space with the surface plate, and an ejection portion that ejects compressed air toward the surface plate;
An air compression pump having an air suction part and a compressed air blowing part;
A power source for driving the air compression pump,
The blowing part of the air compression pump communicates with the blowing part,
The suction portion of the air compression pump is communicated with the hollow portion via a communicating means,
The communication means is
An auxiliary table for measurement, comprising switching means for communicating the suction part and the cavity part of the air compression pump with the atmosphere. In the auxiliary measuring stand according to claim 1,
The auxiliary table for measurement, wherein the air compression pump and the power source are provided in the cavity. In the auxiliary measuring stand according to claim 1,
An auxiliary table for measurement, wherein the air compression pump and the power source are provided on the opposite side of the surface plate across the cavity. In the auxiliary measuring stand according to any one of claims 1 to 3,
The auxiliary means for measurement, wherein the switching means has an operation part which is provided on the outer surface of the base body and switches the state of the switching means. In the auxiliary measuring stand according to any one of claims 1 to 4,
The auxiliary table for measurement, wherein the power source is chargeable.

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