JP2013257167A - Skid cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skid cleaning device that can securely remove a coolant etc., in a through hole and also securely remove a coolant etc., sticking on a side face of a skid.SOLUTION: There is provided a skid cleaning device 10 which includes a skid 24 whose bottom surface 242 comes into contact with a work at a tip of an arm 23 and also has a contact finger 26 arranged in a through hole 241 opened on the bottom surface 242, and is applied to a surface property measuring machine, the skid cleaning device including a housing part 30 which can house the skid 24 and surrounds the bottom surface 242 and side face of the housed skid 24, and an opening 40 for suction which is formed on an internal surface of the housing part 30 at a position opposed to the through hole 241 of the skid 24 housed in the housing part 30.

Description

  The present invention relates to a skid cleaning apparatus, and more particularly to an apparatus for cleaning a skid portion of a surface texture measuring machine.

Conventionally, various surface texture measuring machines have been used to measure the surface texture (contour shape or surface roughness) of a workpiece.
As such a surface texture measuring device, a device that detects the surface shape and unevenness by tracing the workpiece surface with a stylus is often used. Among these, a skid type surface property measuring machine equipped with a skid that is in sliding contact with the workpiece surface is used when it is desired to measure the surface roughness regardless of the contour of the workpiece (see Patent Document 1).
In the skid type surface texture measuring machine, the skid is installed at the tip of the arm of the surface texture measuring machine, the stylus is installed in the arm, and the stylus installed at the tip of the stylus passes through the through hole of the skid and touches the bottom surface of the skid The structure exposed from the surface is often used.

In such a skid-type surface texture measuring machine, coolant, cutting fluid or the like adhering to the work enters the through-hole of the skid and stays in the gap between the inner surface of the through-hole and the stylus. Sometimes.
If such coolant or the like stays, subtle movement of the stylus is hindered, which may cause a decrease in measurement accuracy and may hinder measurement operation itself.
In order to prevent the influence of such a staying coolant or the like, Patent Document 1 proposes a method of removing the coolant or the like staying in the through hole of the skid.

In Patent Document 1, a negative pressure suction force is generated in the suction pad using the suction effect by the compressed air flow passed through the tank portion, and the suction pad is disposed toward the bottom surface of the skid, A method of sucking out coolant or the like has been proposed.
In addition, a method has also been proposed in which an opening communicating with the through hole from the side opposite to the bottom surface of the skid is provided, compressed air is blown into the opening, and coolant or the like in the through hole is discharged.
Further, a method has been proposed in which the skid portion is immersed in a cleaning tank and the coolant in the through hole is cleaned and removed.

JP 2012-26736 A

Among the methods of Patent Document 1 described above, the method of sucking out with a suction pad can be widely applied to various surface texture measuring machines.
However, when this method is actually applied, it is desirable to deal with the following matters.

That is, in this method, the suction pad is applied to the work-side surface of the skid, and the coolant or the like in the through hole opened on the surface is sucked. At this time, it is necessary to arrange so that the cavity inside the suction pad faces the opening of the through hole. However, the opening of the through hole on the surface of the skid becomes invisible to the operator when the suction pad is brought close to it, and there is a possibility that the suction pad cannot be installed in an appropriate positional relationship. There is a possibility that it cannot be done reliably.
In addition, only the coolant that has entered the through-hole can be sucked by the same method, and the coolant that has adhered to the vicinity of the side surface of the skid, etc. remains. For this reason, after the coolant or the like in the through hole is sucked by the suction pad, there is a possibility that the coolant or the like adhering to the surroundings flows and stays in the through hole again.

  An object of the present invention is to provide a skid cleaning device that can reliably remove coolant and the like in a through-hole and can also reliably remove coolant and the like attached to the side surface of the skid.

  The skid cleaning apparatus of the present invention is a skid cleaning apparatus applied to a surface texture measuring machine having a skid that contacts a workpiece at the bottom surface at an arm tip, and a stylus disposed in a through hole that opens at the bottom surface. A housing part that can accommodate the skid and surrounds a bottom surface and a side surface of the skid, and is opposed to the through hole of the skid formed on the inner surface of the housing part and housed in the housing part. A suction opening formed in the region.

In the present invention, the arm tip of the surface texture measuring instrument is brought close to the skid cleaning device, and the arm tip including the skid is housed in the housing portion. By accommodating in this way, the accommodated skid is automatically arranged so that the suction opening faces the through hole. Then, by performing negative pressure suction from the suction opening, the coolant and the like in the through hole are sucked and removed together with the air in the housing portion. Further, the coolant or the like adhering to the side surface of the skid is also sucked and removed by the air flow generated in the housing portion toward the suction opening.
As described above, in the present invention, the skid and the through hole are arranged in an appropriate state by a simple operation of housing the tip of the arm including the skid in the housing portion, and the coolant and the like in the through hole can be reliably removed. Furthermore, since the negative pressure reaches the periphery of the skid by surrounding it with the accommodating portion, the coolant or the like attached to the side surface of the skid can be surely removed.

As a means for performing negative pressure suction from the suction opening, a negative pressure generating device such as a decompression pump can be used. Between the suction opening and the negative pressure generator, a filter or the like for filtering the coolant sucked together with the air may be installed.
In addition, as a means for performing negative pressure suction from the suction opening, as shown in FIG. 5 of Patent Document 1, a device that generates negative pressure using compressed air may be used.

In the present invention, the accommodating portion is formed in a bowl shape having a pair of side portions sandwiching the tip of the arm including the skid, and a bottom portion connecting the pair of side portions and facing the bottom surface of the skid. The suction opening is preferably formed in the bottom surface.
In the present invention, the arm tip including the skid is disposed along the housing portion, and the arm tip including the skid is directed toward the bottom surface of the skid with the through hole of the skid facing the suction opening (arm These can be accommodated in the accommodating portion by being translated in a direction that intersects the longitudinal direction. The tip of the arm including the skid accommodated in this way is surrounded by the accommodating portion, and the through hole is appropriately disposed opposite the suction opening. Therefore, the operation of arranging the tip of the arm including the skid can be easily and appropriately performed for cleaning.

The accommodating portion can be formed by forming a groove, that is, a concave portion continuous in a predetermined direction, on the surface of the block-shaped main body, and using a bowl-shaped portion inside thereof.
Moreover, you may form an accommodating part using the hook-shaped member whose cross section is C-shaped or U-shaped.
The above-described saddle-shaped accommodating portion can accommodate the tip of the arm including the skid in the accommodating portion by arranging the arm tip including the skid along the accommodating portion and performing parallel movement.
On the other hand, a hole or a cylindrical member having a circular or rectangular cross section may be used as the accommodating portion. In such a case, the arm tip including the skid can be accommodated by feeding it into the accommodating portion in the longitudinal direction from the tip. .

In the present invention, it is preferable that a marker indicating the position of the suction opening is formed outside the housing portion.
Examples of such a marker include a circular step or pattern formed concentrically with the center position of the suction opening on the surface of a member continuous on the outer periphery of the housing portion, a cross cursor that intersects with the center position of the suction opening, and the like Can be used.
According to the present invention, when the arm tip including the skid is accommodated in the accommodating portion, the target position where the through hole of the skid should be guided can be easily identified even if the suction opening is not visible. it can.

In the present invention, it is desirable that the suction opening is formed so that the longitudinal dimension of the accommodating portion is larger than the width dimension.
In the present invention, the suction opening may be oval or oval long in the longitudinal direction of the housing portion, or rectangular or slit-shaped. With such a shape, even if the insertion position of the arm tip including the skid is slightly displaced in the longitudinal direction with respect to the housing portion, the through hole and the suction opening can be directly opposed, and a reliable suction effect can be obtained. Can be obtained.

The perspective view which shows one Embodiment of this invention. The expanded longitudinal cross-sectional view which shows the principal part of the said embodiment. The expanded cross-sectional view which shows the principal part of the said embodiment. The perspective view which shows other embodiment of this invention. The expanded cross-sectional view which shows the principal part of embodiment of the said FIG. The perspective view which shows other embodiment of this invention. The expanded cross-sectional view which shows the principal part of embodiment of the said FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, a skid cleaning apparatus 10 according to the present embodiment is used for cleaning a skid of a surface texture measuring machine 20.
The surface texture measuring machine 20 can move the probe main body 21 three-dimensionally with respect to a workpiece placed on a table (not shown). The probe main body 21 supports an arm 23 with an arm holder 22, and a skid 24 is installed at the tip of the arm 23.

As shown in FIGS. 2 and 3, a stylus 25 is disposed inside the arm 23, and a stylus 26 is installed at the tip thereof.
A through hole 241 is formed in the skid 24, and the through hole 241 is opened on the bottom surface 242 of the skid 24. The stylus 26 is inserted into the through hole 241 and the tip thereof is exposed from the bottom surface 242. The stylus 25 is swingably supported with respect to the arm 23 or the probe main body 21, and the swing state is detected by a sensor (not shown).

  In such a surface texture measuring machine 20, the probe main body 21 is moved three-dimensionally so that the bottom surface 242 of the skid 24 is brought into contact with the workpiece surface and moved along the surface. At this time, the skid 24 follows the rough shape of the workpiece surface, while the stylus 26 is displaced according to the fine irregularities on the workpiece surface. Therefore, by detecting the displacement of the stylus 26 with respect to the skid 24 as the swing of the stylus 25, it is possible to perform skid type measurement, thereby detecting fine irregularities on the workpiece surface, that is, surface roughness.

Returning to FIG. 1, the skid cleaning device 10 has the following configuration in order to remove the coolant or the like that has entered the through hole 241 of the skid 24 of the surface texture measuring device 20.
The skid cleaning device 10 has a box-shaped main body 11.
The main body 11 is fixed to a frame 27 installed on the edge of the table of the surface texture measuring instrument 20 described above. The main body 11 has a plate-like cover 112 stretched on the surface of a block-like base 111. On the surface of the main body 11 on the cover 112 side, a groove continuous downward from the upper end edge is formed, and the inside thereof is a bowl-shaped accommodating portion 30.

As shown in FIGS. 2 and 3, the accommodating portion 30 has a pair of side surface portions 31 on both sides and a bottom surface portion 32 that connects these side surface portions 31.
The interval between the side portions 31 is formed to be larger than the width of the skid 24 to be cleaned by a predetermined interval. As will be described later, the predetermined interval serves as an air passage through which the airflow flowing along the side surface of the skid 24 is passed when the skid 24 is accommodated in the accommodating portion 30. Therefore, it is desirable to design the airflow so that it is not over-extended so that the velocity of the airflow is sufficiently maintained while ensuring the dimensions that allow airflow.

  In this embodiment, the depth dimension of the bottom surface portion 32 from the surface of the cover 112 is sufficiently large so that the skid 24 is completely accommodated in the accommodating portion 30. However, it is only necessary to accommodate from the bottom surface 242 of the skid 24 to a part of the side surface. For example, if the depth is such that 50% or more of the skid 24 is accommodated, the air flowing along the side surface of the skid 24 described above. A function as an air passage through which a flow passes can be ensured.

A suction opening 40 is formed in the bottom surface portion 32.
As shown in FIG. 3, the main body 11 is connected to a connection chamber 41 and a suction pipe 42 following the suction opening 40, and the suction pipe 42 is connected to a negative pressure generating source such as a decompression pump (not shown). Therefore, a negative pressure generated by the decompression pump or the like is transmitted via the suction pipe 42 and the connection chamber 41, so that a suction force is generated in the suction opening 40, and the air inside or outside the accommodating portion 30 is sucked. Can do.

The suction opening 40 is disposed at a position where the through-hole 241 faces directly when the skid 24 is accommodated in the accommodating portion 30.
The cover 112 of the main body 11 has a circular step marker 33 formed on the surface thereof, the center position of which is set so as to be substantially concentric with the suction opening 40. The position of the opening 40 can be roughly identified.
Although the shape of the suction opening 40 is substantially circular, the dimension L (see FIG. 2) in the longitudinal direction of the housing portion 30 is larger than the width direction W (see FIG. 3) of the housing portion 30, and therefore the housing portion 30. It is made into the ellipse extended in the longitudinal direction.

In this embodiment, the operator activates the surface texture measuring machine 20 and houses the tip of the arm including the skid 24 in the housing portion 30 of the skid cleaning device 10.
At this time, the operator can guide the through hole 241 to a position facing the suction opening 40 by introducing the tip of the arm including the skid 24 into the accommodating portion 30 with reference to the marker 33.
When the arm tip including the skid 24 is accommodated in the accommodating portion 30 by such an operation, the decompression pump or the like connected to the skid cleaning device 10 is operated to start the suction from the suction opening 40.
By this suction, the coolant or the like remaining in the through hole 241 of the skid 24 is sucked into the suction opening 40 and removed.
Further, due to the suction from the suction opening 40, the air outside the housing portion 30 is sucked toward the suction opening 40, and this air flow flows along the surface of the skid 24, thereby adhering to the surface of the skid 24. The coolant or the like that has been sucked into the suction opening 40 is removed.
After such a suction operation is continued for a predetermined time, the decompression pump or the like is stopped, and the arm tip including the skid 24 is taken out of the housing portion 30, whereby the cleaning of the skid 24 is completed.

  According to the present embodiment, the skid 24 and the through hole 241 are arranged in an appropriate state by a simple operation of housing the arm tip including the skid 24 in the housing portion 30, and the coolant in the through hole 241. Can be reliably removed. Further, since the negative pressure reaches the periphery of the skid 24 by being surrounded by the accommodating portion 30, the coolant and the like adhering to the side surface of the skid 24 can also be reliably removed.

In the present embodiment, a pair of side surface portions 31 sandwiching the arm tip including the skid 24 and a bottom surface portion 32 connecting the side surface portions 31 and facing the bottom surface of the skid 24 form a bowl-shaped storage portion 30. Since the suction opening 40 is formed in the bottom surface portion 32, the arm tip including the skid 24 can be easily accommodated in the accommodating portion 30.
That is, the arm tip including the skid 24 is disposed along the housing portion 30, and the arm tip including the skid 24 is placed on the bottom surface 242 side of the skid 24 with the through hole 241 of the skid 24 facing the suction opening 40. These can be accommodated in the accommodating portion 30 by being moved parallel (in a direction intersecting the longitudinal direction of the arm 23).
The distal end of the arm including the skid 24 accommodated in this way is surrounded by the accommodating portion 30, and the through hole 241 is appropriately disposed opposite to the suction opening 40. Therefore, the operation of arranging the arm tip including the skid 24 can be easily and appropriately performed for cleaning.

Further, in the present embodiment, it is desirable that a marker 33 indicating the position of the suction opening 40 is formed outside the housing portion 30.
Due to the presence of such a marker 33, the target position where the through hole 241 of the skid 24 should be guided even when the suction opening 40 is not visible when the arm tip including the skid 24 is accommodated in the accommodating portion. Can be easily identified.

  In addition, since the suction opening 40 is formed such that the longitudinal dimension L of the accommodating portion 30 is larger than the width dimension W, the insertion position of the arm tip including the skid 24 is positioned relative to the accommodating portion 30. Even if it is slightly displaced in the longitudinal direction, the through-hole 241 and the suction opening 40 can be opposed to each other, and a reliable suction effect can be obtained.

Note that the present invention is not limited to the above-described embodiments, and modifications and the like within a range in which the object of the present invention can be achieved are included in the present invention.
In the embodiment of FIGS. 1 to 3, the block-shaped main body 11 is used, and the groove 11 is formed in the main body 11 to form the bowl-shaped storage portion 30. However, the storage portion 30 has another structure. It may be realized.

In the skid cleaning device 10A of another embodiment shown in FIGS. 4 and 5, a saddle-shaped main body 11A having a C-shaped (semi-circular) cross section is used, and a side surface 31 continuous in a curved shape on the inside thereof and The accommodating portion 30 surrounded by the bottom portion 32 is formed, and a slit-like suction opening 40A is formed on the innermost side.
Also according to this embodiment, the same effects as those of the embodiment of FIGS. 1 to 3 can be obtained. However, since there is no marker 33 in FIG. 1, there is no target when the skid 24 is accommodated. However, since the suction opening 40 is long in a slit shape, even if the position of the through hole 241 fluctuates greatly, suction is sufficiently performed. It can be carried out.

In the skid cleaning apparatus 10B according to another embodiment shown in FIGS. 6 and 7, a bottomed cylindrical main body 11B is used, and the inside thereof is a housing portion 30B that is not bowl-shaped, and a slit-like shape is formed on one side thereof. A suction opening 40B is formed.
In the present embodiment, the skid 24 and the arm 23 are introduced from the opening end of the main body 11B in the longitudinal direction and are accommodated in the accommodating portion 30B. Since the suction opening 40B is long like a slit, the through hole 241 can be directly opposed to the suction opening 40B even if the introduction position of the skid 24 is approximate.
Also according to this embodiment, it is possible to remove the coolant or the like staying in the through hole 241 and remove the coolant or the like adhering to the surface of the skid 24.

DESCRIPTION OF SYMBOLS 10, 10A, 10B ... Skid cleaning apparatus 11, 11A, 11B ... Main body 111 ... Base 112 ... Cover 20 ... Surface texture measuring device 21 ... Probe main body 22 ... Arm holder 23 ... Arm 24 ... Skid 241 ... Through-hole 242 ... Bottom 25 ... stylus 26 ... stylus 27 ... frame 30, 30B ... housing part 31 ... side part 32 ... bottom part 33 ... marker 40, 40A, 40B ... suction opening 41 ... connection chamber 42 ... suction pipe L ... dimension W ... dimension

Claims (4)

A skid cleaning device applied to a surface texture measuring machine having a skid that contacts a workpiece on the bottom surface of an arm and a stylus disposed in a through-hole that opens to the bottom surface,
An accommodation part that can accommodate the skid and surrounds the bottom and side surfaces of the accommodated skid, and a part that is formed on the inner surface of the accommodation part and that faces the through hole of the skid accommodated in the accommodation part A skid cleaning device having a suction opening. In the skid cleaning apparatus according to claim 1,
The accommodating portion is formed in a bowl shape having a pair of side surface portions sandwiching the tip of the arm including the skid, and a bottom surface portion connecting the pair of side surface portions and facing the bottom surface of the skid. A skid cleaning apparatus, wherein the opening is formed in the bottom surface portion. In the skid cleaning apparatus according to claim 1 or 2,
A skid cleaning apparatus, wherein a marker indicating the position of the suction opening is formed outside the housing portion. In the skid cleaning apparatus in any one of Claim 1- Claim 3,
The skid cleaning apparatus, wherein the suction opening is formed such that a dimension in a longitudinal direction of the housing portion is larger than a dimension in a width direction.

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