CN214559055U

CN214559055U - Positioning and fixing device

Info

Publication number: CN214559055U
Application number: CN201990000899.3U
Authority: CN
Inventors: 北浦太一郎; 高桥卓也
Original assignee: Pascal Engineering Corp
Current assignee: Pascal Engineering Corp
Priority date: 2018-10-30
Filing date: 2019-09-11
Publication date: 2021-11-02
Anticipated expiration: 2029-09-11
Also published as: WO2020090239A1; JP2020069556A; JP7122748B2

Abstract

The present application relates to a positioning and fixing device. The cylinder body (110) includes a portion (112A) embedded in the base (2), a cylindrical shaft portion (112B) protruding from the base (2), and a flange portion (112C) provided on the opposite side of the base (2) from the cylindrical shaft portion (112B) and capable of being fixed to the base (2). A tapered surface (112G) having a diameter that decreases toward the distal end side in the axial direction of the cylindrical shaft section (112B) is formed on the outer peripheral portion of the cylindrical shaft section (112B). The annular member (200) attached to the object (1) to be fixed is provided with an engagement section (210A), and the engagement section (210A) is provided on the inner peripheral side portion and can engage with the tapered surface (112G) to position the object (1) to be fixed in the horizontal direction. The annular member (200) can be driven so that the object (1) to be fixed comes into contact with the reference surface of the base (2).

Description

Positioning and fixing device

Technical Field

The present disclosure relates to a positioning and fixing device.

Background

Conventionally, a fixing device for fixing a fixing object (such as a die or a work pallet for mounting a workpiece for machining) to a base and having a function of positioning the fixing object is known. Examples of the positioning and fixing device for fixing and positioning include devices described in patent document 1 (japanese patent application laid-open No. 2013-223888) and patent document 2 (japanese patent application laid-open No. 2014-39972).

However, in the apparatuses described in

patent documents

1 and 2, it is necessary to manually insert a rod or a bolt in a state where the object to be fixed is superposed on the base, and thus, the time and effort for replacing the object to be fixed are increased. Examples of the positioning and fixing device capable of saving labor for replacement of the fixing object include devices described in patent document 3 (international application publication No. 2005/110671), patent document 4 (japanese patent application laid-open No. 2003-19631), and patent document 5 (japanese patent laid-open No. 2008-183651).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2013-223888

Patent document 2: japanese patent laid-open No. 2014-39972

Patent document 3: international application publication No. 2005/110671

Patent document 4: japanese laid-open patent publication No. 2003-19631

Patent document 5: japanese patent laid-open No. 2008-183651

SUMMERY OF THE UTILITY MODEL

Problem to be solved by utility model

In the positioning and fixing devices described in patent documents 3 to 5, an upper flange located on an upper surface (a main surface on the side of a fixing object) of a base is provided on a cylinder main body, and the upper flange is fixed to the base. Therefore, in a state where the fixing object portion is fixed to the base, the jig in which the base and the fixing object are combined has a thickness in which the thickness of the upper flange portion of the positioning and fixing device is added in addition to the thicknesses of the base and the fixing object as a whole.

For example, in a state where the object to be fixed is fixed to the base, the jig may be rotated as a whole for facilitating machining such as cutting. When the thickness of the whole jig is large, the inertia moment is large, and the load of the equipment for supporting the substrate is increased.

The following positioning and fixing means are preferred: the fixture can save labor for replacing the fixing object, and can position and fix the fixing object relative to the base body while suppressing the increase of the thickness of the whole fixture formed by combining the base body and the fixing object.

Means for solving the problems

The positioning and fixing device of the present disclosure can pull a fixing object toward a base body and fix it, and position the fixing object with respect to the base body.

The positioning and fixing device comprises: a fluid pressure cylinder fixed to the base; and an annular member that can be attached to an attachment hole formed in the object to be fixed.

The fluid pressure cylinder includes: the drive mechanism is configured to drive the ring member in a reciprocating direction in accordance with the reciprocating motion of the piston member.

In one aspect, a cylinder body includes: the flange portion is provided on the opposite side of the cylindrical shaft portion with respect to the base body and can be fixed to the base body. A tapered surface having a diameter that decreases toward the axial distal end side of the cylindrical shaft portion is formed on the outer peripheral portion of the cylindrical shaft portion. The annular member includes an engaging portion provided on an inner peripheral portion of the annular member and capable of positioning the object to be fixed in the horizontal direction by engaging with the tapered surface. The drive mechanism can drive the annular member so that the object to be fixed is in contact with the reference surface of the base.

In one aspect, the base can abut against the object to be fixed in a region around a portion in which the cylinder body is embedded.

In one embodiment, the base body can abut against the object to be fixed in a region of an outer edge portion of the object to be fixed.

In one aspect, a cylinder body includes: a portion embedded in the base and a cylindrical shaft portion protruding from the base. A tapered surface having a diameter that decreases toward the distal end side in the axial direction of the cylindrical shaft portion is formed on the outer peripheral portion of the cylindrical shaft portion. The annular member includes an engaging portion provided on an inner peripheral portion of the annular member and capable of positioning the object to be fixed in the horizontal direction by engaging with the tapered surface. The cylindrical shaft portion of the cylinder body is formed to have a diameter smaller than that of the portion embedded, and the object to be fixed can abut against the reference surface of the base.

In one embodiment, a stepped portion is formed between the cylindrical shaft portion and a portion embedded in the base, and the stepped portion can be formed below a reference surface of the base.

In one aspect, a cylinder body includes: a portion embedded in the base and a cylindrical shaft portion protruding from the base. A tapered surface having a diameter that decreases toward the distal end side in the axial direction of the cylindrical shaft portion is formed on the outer peripheral portion of the cylindrical shaft portion. The annular member includes an engaging portion provided on an inner peripheral portion of the annular member and capable of positioning the object to be fixed in the horizontal direction by engaging with the tapered surface. The tapered surface of the cylindrical shaft portion is formed in the vicinity of the reference surface of the base body, and the object to be fixed can come into contact with the reference surface of the base body.

In one aspect, the fluid pressure cylinder may include a fluid chamber formed in a cylinder body to supply fluid for driving the piston member. The fluid chamber may be formed to be accommodated in a portion of the cylinder body embedded in the base.

In one aspect, the drive mechanism may include a plurality of steel balls that are held so as to be movable in a radial direction in a plurality of holding holes formed in the cylindrical shaft portion. The annular member may include a plurality of engaging recesses formed so that the plurality of steel balls can be in surface contact or line contact with each other in a state where the annular member is fitted around the cylindrical shaft portion. The piston member is driven in a direction away from the object to be fixed, the plurality of steel balls are engaged with the plurality of engagement recesses, respectively, to fix the object to be fixed to the base, the piston member is driven in a direction toward the object to be fixed, and the plurality of steel balls are disengaged from the plurality of engagement recesses, respectively, to release the object to be fixed from the base.

In one aspect, the engaging recess portion may be formed in a partially spherical surface shape or a partially cylindrical surface shape.

In one aspect, the ring member can include: a 1 st annular member including an engaging portion engaged with the tapered surface and an engaging recess engaged with the steel ball; and a 2 nd annular member fixed to an inner peripheral surface of the mounting hole of the object to be fixed. The object to be fixed can be fixed to the base by pressing the 1 st annular member against the base.

In one embodiment, the piston member is driven in a direction approaching the object to be fixed, and the bottom surface of the mounting hole of the object to be fixed is pressed by the tip end of the piston member, whereby the object to be fixed can be released from the base body.

Effect of the utility model

According to the positioning and fixing device of the present disclosure, the fixing object can be positioned and fixed with respect to the base while the increase in thickness of the entire jig formed by combining the base and the fixing object is suppressed while saving effort in replacing the fixing object.

Drawings

FIG. 1 is a top view of a base provided with one embodiment of a positioning fixture.

Fig. 2 is a sectional view showing a released state (state 1) of the positioning and fixing device according to the embodiment.

Fig. 3 is a sectional view showing a clamped state (state 2) of the positioning and fixing device according to the embodiment.

Fig. 4 is a sectional view showing a clamped state of a positioning and fixing device according to another embodiment.

Fig. 5 is a sectional view showing a cylindrical shaft portion of a cylinder main body of the positioning and fixing device shown in fig. 4.

Fig. 6 is a sectional view showing a clamped state of a positioning and fixing device according to still another embodiment.

Fig. 7 is a plan view showing the 1 st member of the ring member of the positioning and fixing device shown in fig. 6.

Fig. 8 is a sectional view showing a clamped state of a positioning and fixing device according to still another embodiment.

Fig. 9 is a plan view of a base body provided with a positioning and fixing device according to an embodiment, and is a diagram showing an example of arrangement of reference seat faces of the base body.

Fig. 10 is a sectional view corresponding to fig. 9 (a state where the fixing object is placed).

Fig. 11 is a plan view of a base body provided with a positioning and fixing device according to an embodiment, and is a diagram showing another example of arrangement of reference seat faces of the base body.

Fig. 12 is a sectional view corresponding to fig. 11 (a state where the fixing object is placed).

Detailed Description

The embodiments are explained below. Note that the same or corresponding portions are denoted by the same reference numerals, and description thereof may not be repeated.

In the embodiments described below, when the number, amount, and the like are referred to, the scope of the present invention is not limited to the number, amount, and the like unless otherwise specified. In the following embodiments, each component is not essential to the present invention except for the case where it is specifically described.

Fig. 1 is a plan view of a base body provided with the positioning and fixing device of the present embodiment. As shown in fig. 1,

positioning fixtures

1000 and 2000 and a fixture 3000 are disposed on a base body 2.

The positioning and fixing device 1000 can restrain the fixing object in the X-axis direction, the Y-axis direction, and the Z-axis direction in fig. 1. The positioning and fixing device 2000 can restrain the fixing object in the arrow a direction and the Z-axis direction in fig. 1. Arrow a is an arrow in a direction orthogonal to a line connecting the center of the positioning fixture 1000 and the center of the positioning fixture 2000. The fixing device 3000 can restrain the fixing object in the Z-axis direction in fig. 1.

In the example shown in fig. 1, when the fixing object is fixed, the fixing object is positioned in the XY plane direction by the positioning and fixing device 1000 and the positioning and fixing device 2000. At the same time, the positioning and fixing device 1000, the positioning and fixing device 2000, and the two fixing devices 3000 perform positioning of the fixing object in the Z-axis direction.

The arrangement of the positioning and fixing devices is not limited to the example shown in fig. 1, and for example, there may be a case where one positioning and fixing device 1000 and one positioning and fixing device 2000 are provided.

The structure and operation of the positioning and fixing device 1000 will be described with reference to fig. 2 and 3. Fig. 2 shows a released state of the positioning and fixing device 1000, and fig. 3 is a sectional view showing a clamped state of the positioning and fixing device 1000.

As shown in fig. 2 and 3, the positioning and fixing device 1000 pulls the object 1 to be fixed against the reference seat surface 2C (reference surface) of the base body 2 and fixes the object. In this case, the object 1 can be positioned with respect to the base 2.

Examples of the object 1 to be fixed include a die, a work pallet for mounting a work for cutting, and the like, but the object 1 to be fixed of the present disclosure is not limited thereto. A mounting hole 1A is provided in a main surface of the object 1 to be fixed facing the substrate 2.

The base body 2 may be fixed to a stationary object or may be supported by a rotation support mechanism or the like so as to be movable. The base body 2 is formed with

oil passages

2A, 2B for supplying hydraulic pressure to the positioning and fixing device 1000.

The positioning and fixing device 1000 includes a fluid pressure cylinder 100 fixed to the base body 2 and an annular member 200 that can be attached to the attachment hole 1A of the object 1. The following illustrates the fluid pressure cylinder 100 as a hydraulic cylinder, but the fluid pressure cylinder 100 may be a cylinder.

The fluid pressure cylinder 100 includes a cylinder body 110, a piston member 120, and a steel ball 130. The fluid pressure cylinder 100 is fixed to the base 2 by bolts 140 (fixing members). The hydraulic cylinder 100 includes an oil chamber 150 (1 st fluid chamber) for clamping, an oil chamber 160 (2 nd fluid chamber) for unclamping, and a rotation prevention mechanism 170 that prevents the piston member 120 from rotating in the axial direction.

The cylinder main body 110 includes a 1 st member 111 and a 2 nd member 112. The 1 st member 111 includes a lid portion 111A (1 st portion) for forming the oil chamber 160 and a flange portion 111B (2 nd portion) fixed to the base 2 with the bolts 140. The 2 nd member 112 includes an embedded portion 112A (a cylinder portion) embedded in the base, a cylindrical shaft portion 112B (a protruding portion) protruding from the base 2, and a flange portion 112C provided on the opposite side of the base 2 from the cylindrical shaft portion 112B.

The cylindrical shaft portion 112B is formed to be smaller in diameter than the embedded portion 112A. The cylindrical shaft portion 112B is adjacent to the embedded portion 112A. The flange portion 112C is formed to protrude radially outward from the embedded portion 112A. The flange portion 112C is adjacent to the embedded portion 112A on the opposite side to the cylindrical shaft portion 112B. The flange portion 112C is fixed to the base 2 together with the flange portion 111B of the 1 st member 111.

The 2 nd member 112 further includes an oil passage 112D capable of connecting the oil passage 2A of the base 2 to the oil chamber 150 for clamping, and an oil passage 112E capable of connecting the oil passage 2B of the base 2 to the oil chamber 160 for unclamping.

In the 2 nd member 112 of the cylinder main body 110, a step portion 112F is formed between an embedded portion 112A (cylinder body portion) embedded in the base body 2 and a cylindrical shaft portion 112B protruding from the base body 2. As shown in the example of fig. 2 and 3, in a state where the positioning and fixing device 1000 is provided on the base body 2, the stepped portion 112F of the cylinder body 110 is located at a position recessed into the base body 2 from the reference seat surface 2C of the base body 2, that is, at a position lower than the reference seat surface 2C. Therefore, the base 2 is provided with a reference seat surface 2C.

A tapered surface 112G having a diameter that decreases toward the distal end side in the axial direction of the cylindrical shaft portion 112B is formed on the outer peripheral portion of the cylindrical shaft portion 112B. In the example of fig. 2 and 3, the tapered surface 112G is continuously formed over the entire circumference of the cylindrical shaft portion 112B. The tapered surface 112G may be formed intermittently in the circumferential direction of the cylindrical shaft portion 112B. The tapered surface 112G protrudes above the reference seat surface 2C. The tapered surface 112G is disposed adjacent to the reference seat surface 2C. The tapered surface 112G is formed in the vicinity of the reference seat surface 2C.

A sealing member 113 is provided at a joint portion between the 1 st member 111 and the 2 nd member 112 of the cylinder main body 110. Sealing

members

114, 115, and 116 are provided on the outer peripheral portion of the 2 nd member 112 of the cylinder main body 110. The seal member 114 seals the

oil passages

2B, 112E from the outside of the base body 2. The seal member 115 seals between the

oil passages

2A, 112D and the

oil passages

2B, 112E. The seal member 116 seals the

oil passages

2A, 112D from the outside of the base body 2.

The piston member 120 is fitted so as to be able to advance and retreat in the axial direction with respect to the cylinder body 110. The piston member 120 includes a piston portion 120A slidably supported by the embedded portion 112A of the 2 nd member 112, and a piston shaft portion 120B extending upward from the piston portion 120A and slidably supported by the cylindrical shaft portion 112B of the 2 nd member 112.

The piston portion 120A defines an oil chamber 150 and an oil chamber 160. A seal member 123 is provided on the outer peripheral portion of the piston portion 120A. The sealing member 123 seals between the

oil chambers

150, 160.

Seal members

124 and 125 are provided on the outer peripheral portion of the piston shaft 120B. The sealing

members

124, 125 seal between the oil chamber 150 and the outside of the cylinder main body 110.

A retreat recess 121 capable of holding the steel ball 130 is formed in the outer peripheral portion of the piston shaft 120B. A piston top surface 122 is formed at the upper end of the piston shaft portion 120B. In the unclamped state shown in fig. 2, the piston top surface 122 abuts against the bottom surface of the mounting hole 1A of the object 1 to support the object 1.

The steel ball 130 is supported by the cylindrical shaft portion 112B of the cylinder main body 110. In the unclamped state shown in fig. 2, the steel ball 130 is held in the retreat recess 121 of the piston shaft 120B. In the clamped state shown in fig. 3, the steel ball 130 is disengaged from the escape recess 121 and is pressed radially outward by the tapered surface 121A formed on the outer periphery of the piston shaft portion 120B. The tapered surface 121A is formed continuously with the escape recess 121. The tapered surface 121A is inclined in a direction radially outward of the piston shank 120B as it goes to the distal end side of the piston shank 120B. A plurality of (for example, 4) steel balls 130 are provided at equal intervals in the circumferential direction.

The bolts 140 penetrate the flange portion 111B of the 1 st member 111 and the flange portion 112C of the 2 nd member 112, and fix the 1 st member 111 and the 2 nd member 112 to the base 2. Thereby, the cylinder main body 110 is fixed to the base body 2.

The oil chamber 150 communicates with the oil passage 2A via the oil passage 112D. The oil chamber 150 is supplied with hydraulic pressure for performing the clamping operation of the piston member 120. An elastic member 151 (urging member) is provided in the oil chamber 150. The elastic member 151 urges the piston portion 120A toward the 1 st member 111 side. The piston member 120 is stably maintained in the clamped state by the urging force of the elastic member 151. The oil chamber 150 is formed to be accommodated in the embedded portion 112A of the cylinder main body 110.

The oil chamber 160 communicates with the oil passage 2B via the oil passage 112E. The oil chamber 160 is formed to be accommodated in the embedded portion 112A of the cylinder main body 110. A hydraulic pressure for performing the operation of releasing the piston member 120 is supplied to the oil chamber 160. The piston member 120 is driven in the axial direction by the pressure difference between the

oil chambers

150 and 160 and the urging force of the elastic member 151.

The rotation preventing mechanism 170 includes a rod member 171 and a hole portion 172. The rod member 171 is inserted or press-fitted into and fixed to a hole formed in the cover portion 111A of the cylinder main body 110. The hole portion 172 is formed in the lower surface of the piston member 120. The hole portion 172 accommodates the rod member 171. The rod-shaped member 171 and the hole 172 have a polygonal shape (e.g., a hexagonal shape) in cross section. By inserting the rod member 171 into the hole 172, the rotation of the piston member 120 in the cylinder main body 110 is prevented, and the steel ball 130 is held at a precise position.

The ring member 200 includes a 1 st member 210 and a 2 nd member 220. The 1 st member 210 includes an engaging portion 210A engageable with the tapered surface 112G of the 2 nd member 112 of the cylinder main body 110.

A tapered surface 210B is formed on the inner periphery of the engagement portion 210A. The tapered surface 210B is inclined in a direction in which the inner circumference of the 1 st member 210 expands in diameter as it goes toward the root side (the stepped portion 112F side) of the cylindrical shank portion 112B. In the clamped state shown in fig. 3, the tapered surface 210B of the annular member 200 engages with the tapered surface 112G of the cylinder main body 110. At this time, the engaging portion 210A can be elastically deformed.

An engagement recess 210C is formed in a portion of the 1 st member 210 facing the steel ball 130. The engaging recess 210C is formed such that the inner circumference of the 1 st member 210 expands in diameter as it goes upward (toward the distal end of the cylindrical shaft 112B). The engagement recess 210C is formed so that the steel ball 130 can be in surface contact or line contact. The engaging recess 210C is formed in a partially spherical or partially cylindrical surface shape.

The 2 nd member 220 is screwed to the inner periphery of the mounting hole 1A of the object 1, and the 1 st member 210 is fixed to the object 1 together with the 2 nd member 220.

Next, the clamping operation of the positioning and fixing device 1000 will be described. From the unclamped state shown in fig. 2, the hydraulic pressure is supplied to the oil chamber 150 through the

oil passages

2A and 112D. Thereby, the piston member 120 is driven downward (toward the 1 st member 111 of the cylinder body 110). When the piston member 120 is driven downward, the steel ball 130 held in the retreat recess 121 is pressed outward in the radial direction of the piston shaft 120B by the tapered surface 121A in the state of fig. 2. As shown in fig. 3, the steel ball 130 pressed radially outward engages with the engagement recess 210C of the annular member 200, and drives the 1 st member 210 and the 2 nd member 220 of the annular member 200 downward.

Thereby, the object 1 is pushed down. That is, the piston member 120 is driven in a direction away from the object 1 to be fixed, and the plurality of steel balls 130 are engaged with the plurality of engaging recesses 210C, respectively, to fix the object 1 to the base 2.

The object 1 is pressed downward until it abuts against the reference seat surface 2C of the base 2. The reference seat surface 2C is used to position the object 1 in the plumb direction (Z-axis direction).

When the ring member 200 is driven downward, the tapered surface 210B of the engaging portion 210A engages with the tapered surface 112G of the cylindrical shaft portion 112B. Therefore, the ring member 200 descends while being guided by the tapered surface 112G. The tapered surface 112G positions the object 1 in the horizontal direction (X-axis direction and Y-axis direction).

The releasing operation of the positioning and fixing device 1000 can be performed as follows. From the clamped state shown in fig. 3, the hydraulic pressure is supplied to the oil chamber 160 through the

oil passages

2B and 112E. Thereby, the piston member 120 is driven upward (toward the piston shaft 120B).

When the piston member 120 is driven upward, the piston top surface 122 abuts against the object 1 to press the object 1 upward. Thereby, the engagement between the steel ball 130 and the engagement recess 210C is released. Further, the engagement between the tapered surface 112G of the cylinder body 110 and the tapered surface 210B of the annular member 200 is also released.

As a result, the object 1 is pushed upward until it is in the released state shown in fig. 2. That is, the piston member 120 is driven in a direction approaching the object 1 to be fixed, and the plurality of steel balls 130 are disengaged from the plurality of engaging recesses 210C, respectively, thereby releasing the object 1 to be fixed from the base body 2.

In the positioning and fixing device 1000, the annular member 200 can be driven so that the object 1 is in contact with the reference seat surface 2C of the base 2, and the object 1 can be positioned in the vertical direction by the reference seat surface 2C of the base 2. Therefore, in the clamped state shown in fig. 3, the thickness of the entire jig in which the object 1 and the base 2 are combined can be reduced as compared with a structure in which a reference seat surface is provided on a cylinder body protruding from the base 2, and an increase in the moment of inertia can be suppressed. Therefore, in a state where the object 1 is fixed to the base 2, when the jig is rotated as a whole for facilitating machining such as cutting, the load of the device for supporting the base 2 can be reduced.

Next, the positioning and fixing device 2000 will be described with reference to fig. 4 and 5. The alignment fixture 2000 includes the same fluid pressure cylinder 100 and the ring member 200 as the alignment fixture 1000, but differs in the following points.

In the positioning and fixing device 2000 shown in fig. 4 and 5, a tapered surface 112G and a vertical surface 112H are formed on the outer periphery of the cylindrical shaft portion 112B of the cylinder body 110. The tapered surfaces 112 are formed only in two regions opposed to each other in the arrow a direction, and the vertical surfaces 112H are formed in the other regions. The vertical surface 112H does not engage with the tapered surface 210B of the ring member 200.

According to the positioning fixture 2000 illustrated in fig. 4, 5, it is possible to provide only restraint (positioning) in the arrow a direction on the XY plane.

A modification of the positioning and fixing device 2000 will be described with reference to fig. 6 and 7. The example shown in fig. 6 and 7 differs from the positioning fixture 1000 in that the 1 st member 210 of the ring member 200 is divided into the 1 st portion 211 and the 2 nd portion 212.

The 1 st part 211 and the 2 nd part 212 are formed as separate two members. In two regions opposed to each other in the arrow a direction, the outer peripheral surface 211A of the 1 st portion 211 abuts against the inner peripheral surface 212A of the 2 nd portion 212, and in the other region, a gap is formed between the outer peripheral surface 211B of the 1 st portion 211 and the inner peripheral surface 212B of the 2 nd portion 212. The outer circumferential surface 211B of the 1 st part 211 is not in contact with the inner circumferential surface 212B of the 2 nd part 212.

With the positioning fixture 2000 illustrated in fig. 6 and 7, it is also possible to provide only restraint (positioning) in the arrow a direction on the XY plane.

By setting the direction of arrow a as shown in fig. 1, the rotation of the object 1 in the θ direction can be suppressed (see fig. 1).

Fig. 8 is a diagram showing a modification of the positioning and fixing device 1000. As shown in fig. 8, the tapered surface 112G may be formed by an outer plug member 112B1, and the outer plug member 112B1 may be provided on the outer periphery of the cylindrical shaft portion 112B as a member separate from the cylinder main body 110.

Next, an example of the arrangement of the reference seat surface 2C of the base 2 will be described with reference to fig. 9 to 12.

In the example shown in fig. 9 and 10, a reference seat surface 2C is formed in a region around a portion where the positioning and fixing

devices

1000 and 2000 and the fixing device 3000 are embedded in the cylinder body. The reference seat surface 2C is formed to surround a portion of the cylinder body in which the positioning and fixing

devices

1000 and 2000 and the fixing device 3000 are embedded. In the example shown in fig. 9 and 10, the tapered surface 112G (cylinder body 110) for performing positioning in the XY plane direction and the reference seat surface 2C for performing positioning in the Z axis direction are formed at relatively close positions.

In the example shown in fig. 11 and 12, a reference seat surface 2C is formed in a region of the outer edge portion of the object 1.

The portion of the base 2 where the reference seat surface 2C is not formed is set as a relief surface 2D so as not to contact the fixed object 1.

The arrangement of the reference seat surface 2C shown in fig. 9 and 10 and the arrangement of the reference seat surface 2C shown in fig. 11 and 12 may be combined. Further, by providing the seal portion around the reference seat face 2C, chips generated during cutting or the like can be prevented from entering the reference seat face 2C.

In the examples of fig. 9 to 12, the reference seat surface 2C and the relief surface 2D are provided on the base 2 side, but the following processing may be performed: the base body 2 is formed flat, and a contact surface that contacts the base body 2 and a non-contact surface that does not contact the base body 2 are provided on the fixing object 1 side.

While the embodiments of the present invention have been described above, it should be understood that the embodiments disclosed herein are illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims, and is intended to include all modifications that are equivalent in meaning to the claims and that fall within the scope of the claims.

Description of the reference numerals

1. Fixing an object; 1A, mounting holes; 2. a substrate; 2A, oil passages (for clamping); 2B, oil path (for loosening); 2C, a reference seat surface (reference surface); 2D, a retreat surface; 100. hydraulic cylinders (fluid pressure cylinders); 110. a cylinder main body; 111. a 1 st member; 111A, a cover (part 1); 111B, flange portion (part 2); 112. a 2 nd member; 112A, an embedded portion (cylinder body portion); 112B, a cylindrical shaft portion (protruding portion); 112C, a flange portion; 112D, oil passages (for clamping); 112E, oil path (for loosening); 112F, a step part; 112G, tapered surfaces (guide surfaces); 112H, vertical surfaces (escape surfaces); 113. 114, 115, 116, a sealing member; 120. a piston member; 120A, a piston portion; 120B, a piston shaft portion; 121. a retreat recess; 121A, a conical surface; 122. a piston top surface; 123. 124, 125, a sealing member; 130. a steel ball; 140. a bolt; 150. an oil chamber (1 st fluid chamber); 151. an elastic member; 160. an oil chamber (2 nd fluid chamber); 170. a rotation prevention mechanism; 171. a rod-like member; 172. a hole portion; 200. an annular member; 210. a 1 st member; 210A, an engaging part; 210B, tapered surfaces (engaging surfaces); 210C, a clamping concave part; 220. a 2 nd member; 211. part 1; 211A, 211B, an outer peripheral surface; 212. part 2; 212A, 212B, an inner peripheral surface; 1000. 2000, positioning and fixing devices; 3000. And (4) a fixing device.

Claims

1. A positioning and fixing device capable of pulling a fixing object toward a base body and fixing it, and positioning the fixing object with respect to the base body,

this positioning and fixing device has:

a fluid pressure cylinder fixed to the base; and

an annular member that can be attached to an attachment hole formed in the object to be fixed,

the fluid pressure cylinder includes: a cylinder main body, a piston member capable of reciprocating with respect to the cylinder main body, and a drive mechanism for driving the annular member in the reciprocating direction in accordance with the reciprocating motion of the piston member,

the cylinder main body includes: a cylindrical shaft portion that is embedded in a portion of the base, protrudes from the base, and a flange portion that is provided on a side opposite to the cylindrical shaft portion with respect to the base and is fixable to the base, a tapered surface having a diameter that decreases toward an axial distal end side of the cylindrical shaft portion is formed on an outer peripheral portion of the cylindrical shaft portion,

the annular member includes an engaging portion provided on an inner peripheral portion of the annular member and capable of positioning the object to be fixed in a horizontal direction by engaging with the tapered surface,

the drive mechanism can drive the annular member so that the object to be fixed is brought into contact with a reference surface of the base.

2. The positioning fixture of claim 1,

the base body abuts against the object to be fixed in a region around a portion in which the cylinder main body is embedded.

3. The positioning fixture of claim 1,

the base body abuts against the object to be fixed in a region of an outer edge portion of the object to be fixed.

4. A positioning and fixing device capable of pulling and fixing a fixing object toward a base and positioning the fixing object with respect to the base,

this positioning and fixing device has:

a fluid pressure cylinder fixed to the base; and

the cylinder main body includes: a portion embedded in the base and a cylindrical shaft portion protruding from the base, a tapered surface having a diameter that decreases toward a distal end side in an axial direction of the cylindrical shaft portion being formed on an outer peripheral portion of the cylindrical shaft portion,

the cylindrical shaft portion of the cylinder body is adjacent to a portion embedded in the base, and the cylindrical shaft portion is formed to have a smaller diameter than the embedded portion, and the object to be fixed can be brought into contact with a reference surface of the base.

5. The positioning fixture of claim 4,

a stepped portion is formed between the cylindrical shaft portion and a portion embedded in the base, and the stepped portion is formed below a reference surface of the base.

6. A positioning and fixing device capable of pulling a fixing object toward a base body and fixing it, and positioning the fixing object with respect to the base body,

this positioning and fixing device has:

a fluid pressure cylinder fixed to the base; and

the tapered surface of the cylindrical shaft portion is formed in the vicinity of a reference surface of the base body, and the object to be fixed can come into contact with the reference surface of the base body.

7. The positioning fixture as claimed in any one of claims 1-6,

the fluid pressure cylinder includes a fluid chamber formed in the cylinder body, supplied with fluid for driving the piston member,

the fluid chamber is formed to be housed in a portion of the cylinder main body embedded in the base.

8. The positioning fixture as claimed in any one of claims 1-6,

the drive mechanism includes a plurality of steel balls that are held so as to be movable in a radial direction in a plurality of holding holes formed in the cylindrical shaft portion,

the annular member includes a plurality of engaging recesses formed so that the plurality of steel balls can be in surface contact or line contact with each other in a state where the annular member is fitted over the cylindrical shaft portion,

driving the piston member in a direction away from the object to be fixed, and fixing the object to be fixed to the base by engaging the plurality of steel balls with the plurality of engaging recesses, respectively,

the piston member is driven in a direction approaching the object to be fixed, and the plurality of steel balls are disengaged from the plurality of engagement recesses, respectively, thereby releasing the object to be fixed from the base body.

9. The positioning fixture of claim 8,

the engaging recess is formed in a partially spherical or partially cylindrical surface shape.

10. The positioning fixture of claim 8,

the ring-shaped member includes: a 1 st annular member including the engaging portion engaged with the tapered surface and the engaging recess engaged with the steel ball; and a 2 nd annular member fixed to an inner peripheral surface of the mounting hole of the object to be fixed,

the 1 st ring member presses the 2 nd ring member toward the base to fix the object to be fixed to the base.

11. The positioning fixture as claimed in any one of claims 1-6,

the piston member is driven in a direction approaching the object to be fixed, and the bottom surface of the mounting hole of the object to be fixed is pressed by the tip end of the piston member, thereby releasing the object to be fixed from the base body.