WO2008156181A1 - ワークの位置決め方法、及び位置決め装置 - Google Patents
ワークの位置決め方法、及び位置決め装置 Download PDFInfo
- Publication number
- WO2008156181A1 WO2008156181A1 PCT/JP2008/061372 JP2008061372W WO2008156181A1 WO 2008156181 A1 WO2008156181 A1 WO 2008156181A1 JP 2008061372 W JP2008061372 W JP 2008061372W WO 2008156181 A1 WO2008156181 A1 WO 2008156181A1
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- WO
- WIPO (PCT)
- Prior art keywords
- positioning
- sub
- positioning means
- main
- workpiece
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/18—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for positioning only
- B23Q3/183—Centering devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/18—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for positioning only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/0063—Connecting non-slidable parts of machine tools to each other
- B23Q1/0081—Connecting non-slidable parts of machine tools to each other using an expanding clamping member insertable in a receiving hole
- B23Q1/009—Connecting non-slidable parts of machine tools to each other using an expanding clamping member insertable in a receiving hole the receiving hole being cylindrical or conical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49998—Work holding
Definitions
- the present invention relates to a technique for positioning a workpiece, and more specifically, accurately determines a position by absorbing a machining error of a positioning hole provided in a workpiece.
- a reference point of the workpiece to be processed is not accurately grasped with respect to the origin of the machine tool, the workpiece can be machined with high accuracy. Can not.
- a reference surface, etc. should be provided on the work to be assembled, and a position adjustment mechanism should be provided for the assembly machine to detect this position and adjust the assembly position. Is technically possible, but there are problems such as long lead times due to the need for cost detection time.
- Patent Documents 1 to 4 are disclosed.
- Patent Document 1 discloses a technique for automatically changing the position of a knock pin.
- Patent Document 1 positioning is performed on two different types of workpieces.
- a knock hole is provided for use. If one knock pin provided in the positioning device is the main knock pin and the other knock pin is the secondary knock pin, the secondary knock pin is the secondary knock pin.
- the pin pin position can be slid according to the workpiece. If the secondary knock pin moves to the 2 position, it can be made to correspond to the knock hole of each workpiece.
- Patent Document 2 discloses a technique related to a reference-based jig plate.
- the jig plate has a plurality of dowel pin holes and vertical and horizontal grooves, and a frame having knock pin holes that allow the grooves to slide. Then, insert one knock pin into one knock hole formed in the workpiece into the knock pin hole on the jig plate, and insert the other knock pin into the other knock hole.
- a technology that can determine the position of the workpiece by placing it in the knock pin hole is disclosed.
- Patent Document 3 discloses a technique related to a temporary clamp device for a workpiece.
- the clamp system consists of a main clamp and a sub-clamp connected by a connecting rod so that the workpiece can be clamped with a time difference.
- the main clamp and sub-clamp are connected at the connection port, and one drive source is fixed at a position off the center of the connection port, so after fixing with the main clamp, the sub-clamp Since the position of the workpiece can be determined by the main clamp, it is possible to realize a clamp that is unlikely to cause workpiece displacement.
- Patent Document 4 discloses a technique related to a knock pin positioning and fixing device.
- Clamp mechanism that uses two lever pins to position the workpiece.
- One of the knock pins slides a long hole and uses the lever principle to handle multiple different workpieces.
- the position of the other knock pin can be determined by sliding the slotted hole at an angle that intersects one of the slotted holes and the extension line. It is possible to mess up.
- Patent Documents 1 to 4 have a problem in that it is difficult to improve positioning accuracy.
- the knock hole formed in the workpiece is designed with a certain degree of clearance.
- the diameter of the knock holes and the pitch between the holes can be determined with great accuracy if the knock holes formed in the workpiece are machined into a block material.
- the tolerance of accuracy of the diameter of the knock holes and the pitch between holes becomes large.
- high-precision machining requires a certain amount of time, and in some cases, only the accuracy that meets the cost can be obtained.
- the workpiece When inserting the workpiece into the knock pin, the workpiece is tilted. If the clearance between the knock pin and the knock hole is not set with an accuracy that does not allow this inclination, it will be very difficult to insert and remove the workpiece with respect to the knock pin.
- the diameter of the knock pin is set to be somewhat smaller than the diameter of the knock hole formed in the workpiece, and the positioning accuracy is lowered accordingly.
- the inter-hole pitch can be set to be loose as a result of the sub-positioning means moving relative to the main positioning means.
- the benefits are conceivable, but as long as the knock pin is inserted into the knock hole, there is no change in the configuration that requires the clearance to be inserted.
- Patent Document 5 discloses a technology related to a positioning device and a clamping system including the positioning device.
- Figure 19 shows a vertical cross section of the secondary knock pin 100 of Patent Document 5.
- FIG. 20 shows a horizontal cross section of the secondary knock pin 100 of Patent Document 5.
- the sub knock pin 100 is provided with a plug member 110 at the front end portion of the housing 109, and a slide outer surface 110a is formed on the plug member 110. Then, the sliding portion 1 1 1 1 force in which the sliding surface 1 1 1 a abutting against the sliding outer surface 1 1 0 a is formed is inscribed in the cylindrical wedge member 1 1 3. The wedge member 1 1 3 is inscribed in the engagement member 1 1 4, and the engagement member 1 1 4 is held by the cap member 1 1 2.
- the secondary knock pin 100 Since the secondary knock pin 100 has such a configuration, when the cap member 1 1 2 is inserted into the secondary knock hole of the workpiece, the slide surface of the slide portion 1 1 1 1 1 1 a and the slide outer surface of the plug member 1 1 0 1 1 0 a slide and move in parallel to move the cap member 1 1 2 with respect to the nozzle 1 0 9 Correct the pitch error between the main and secondary knock holes.
- the cap member 1 1 2 is connected to the piston 1 1 5, if the piston 1 1 5 is lowered from the state of FIG. 1 9 by hydraulic pressure, the wedge member 1 1 3 becomes a wedge shape. As a result, the diameter of the engaging member 1 14 can be increased, and the clearance between the secondary knock hole and the cap member 1 1 2 can be eliminated.
- Patent Document 5 is also basically a technology for positioning a workpiece with two knock pins, but it has a function to absorb the pitch error between the main and secondary knock holes. Therefore, according to the processing machine using such a positioning device, it is possible to process the workpiece with high accuracy based on the main knock hole.
- Patent Literature 1 Japanese Patent Publication 4 1 2 0 7 3 9
- Patent Literature 2 Actual Fairness 6 — 4 4 5 8 6
- Patent Document 3 Japanese Patent Laid-Open No. 9 — 1 0 3 9 2 8
- Patent Document 4 Japanese Patent Laid-Open No. 2 0 0 2 — 2 6 3 9 7 7
- Patent Document 5 International Publication W O 2 0 0 5/0 3 7 4 8 5 A 1 Non-Fresh Disclosure of Invention
- Patent Document 5 also has a problem that the knock pin itself cannot be structurally cut.
- the positioning device of Patent Document 5 is A plug member 1 1 0, a slide portion 1 1 1, and a wedge member 1 1 3 are provided inside the tip of the cup pin 100, and an engaging member 1 1 4 that engages with a secondary knock hole on the outer periphery thereof. Is provided. By such a sliding mechanism, the ⁇ IJ knock pin 100 moves in parallel and corrects the pitch error between the main and secondary knock holes.
- the slide mechanism must have enough rigidity to receive the corresponding stress, such as the horizontal stress generated when absorbing the pitch error and the vertical stress due to the weight of the workpiece.
- the fact that the diameter of the secondary knock pin 100 needs to be increased means that the diameter of the secondary knock hole of the workpiece also needs to be increased.
- the knock pin can accommodate a small-diameter knock hole.
- the present invention can cope with a small-diameter knock hole and can absorb a pitch error between a main knock hole and a sub-knock hole formed in the work.
- An object of the present invention is to provide a positioning method and a positioning device. Means for solving the problem
- a workpiece positioning method according to the present invention has the following characteristics and exhibits an action and an effect.
- the main positioning means includes a main positioning insertion portion having a circular outer periphery, which is inserted into the main positioning hole.
- the positioning means includes a base block member having at least two opposing first smooth surfaces parallel to a straight line connecting the main positioning means and the sub-positioning means, and the base block member. Corresponding to the first smooth surface, a slide portion formed with a second smooth surface parallel to the straight line, and an upper portion of the slide portion, and inserted into the sub-positioning hole.
- a positioning insertion portion and when positioning the workpiece, the main positioning insertion portion of the main positioning means is inserted into the main positioning hole, and the slide portion of the sub positioning means is It is guided by the first smooth surface and moves on the straight line to absorb the pitch error between the main positioning hole and the sub positioning hole, and the sub positioning insertion portion is inserted into the sub positioning hole. It is characterized by.
- the invention described in (1) includes a main positioning means and a sub-positioning means that protrude on the reference surface, and the main positioning means is provided in a main positioning hole formed in the work, and the sub-positioning means formed in the work.
- the secondary positioning means is inserted into the positioning hole, and the workpiece positioning method is used to determine the position of the workpiece.
- the primary positioning means is inserted into the primary positioning hole.
- Corresponding to the first smooth surface of the base block member and the base block member formed with at least two opposing first smooth surfaces parallel to the straight line connecting the main positioning means and the sub-positioning means. A second smooth surface parallel to the straight line is formed.
- a secondary positioning insertion portion that is inserted in the secondary positioning hole and has a circular outer periphery, and is used to position the main positioning means when positioning the workpiece.
- the positioning insertion part is inserted into the main positioning hole, and the slide part of the auxiliary positioning means is guided by the first smooth surface and moves on the straight line.
- the secondary positioning insert is inserted into the secondary positioning hole.
- the sub-positioning means can move on the straight line connecting to the main positioning means, and it is possible to absorb the pitch error between the main positioning hole and the sub-positioning hole of the workpiece without imposing an excessive burden on the main positioning means. It becomes.
- the main positioning means can be accurately positioned by applying an unreasonable load to the main positioning means. Contributes to improvement.
- the sub-positioning insertion part may receive a load in the thrust direction due to the weight or load of the workpiece, it is desirable to increase the rigidity by widening the first smooth surface and the second smooth surface.
- the accuracy of the parts that make up the slide part affects the positioning accuracy of the workpiece, so it must be manufactured with high precision. However, as the part becomes smaller, it becomes more difficult to achieve higher precision. I want to make it bigger. On the other hand, there are many cases where the main positioning hole and sub-positioning hole of the workpiece are unnecessary when the workpiece is attached to the product, and it is not possible to provide a hole with a very large diameter.
- a slide portion having a second smooth surface corresponding to the first smooth surface of the base block member is provided at the lower portion of the sub-positioning insertion portion, and the sub-positioning insertion is performed as in the technique disclosed in Patent Document 5.
- the sub-positioning insertion part can be reduced in size. For example, it can accommodate a knock hole with a diameter of 6 mm or 8 mm. It becomes possible. In addition, it is not necessary to reduce the size of the slide section, which can contribute to higher accuracy.
- a workpiece that can be applied to a small-diameter knock hole and that can absorb the pitch error between the main knock hole and the sub-knock hole formed in the work. It is possible to provide a positioning method.
- the “outer diameter is circular” as used herein refers to, for example, the outer periphery of the main positioning insertion portion and the auxiliary positioning insertion portion, which will be described later, in addition to the circular outer periphery.
- a diameter gripping member By including a diameter gripping member, a structure for gripping the inner diameter of the main positioning hole and the sub-positioning hole formed in the cake at three or more points is also included. It is possible to eliminate the clearance between the positioning hole and each insertion part by providing three or more gripping points or gripping the inner diameter of the positioning hole with the surface.
- the sub-positioning means includes an inner diameter gripping member in contact with an inner surface of the sub-positioning hole, and a diameter adjustment including an outer peripheral surface in contact with the inner diameter gripping member. And moving the diameter adjusting portion or the inner diameter gripping member in the axial direction of the sub positioning means in a state where the sub positioning insertion portion is inserted into the sub positioning hole of the workpiece.
- the inner diameter gripping member is in contact with and presses the inner surface of the sub-positioning hole.
- the invention described in (2) is the workpiece positioning method described in (1), wherein the sub-positioning means includes an inner diameter gripping member that contacts the inner surface of the sub-positioning hole, and a tapered surface that the outer peripheral surface contacts the inner diameter gripping member.
- the diameter adjusting portion, and with the sub-positioning insertion portion inserted in the sub-positioning hole of the workpiece, the diameter adjusting portion or the inner diameter gripping member is translated in the axial direction of the sub-positioning means, Since the inner diameter gripping member comes into contact with and presses the inner surface of the auxiliary positioning hole, the auxiliary positioning means can be added with the inner diameter gripping function of the auxiliary positioning hole.
- the positioning hole for the positioning pin has a clearance with a large contact gap to improve workability. Therefore, a clearance of about several tens of ⁇ is provided even for a hole with a diameter of about 1 Om m, and this clearance makes it easy to insert / remove the positioning hole provided in the workpiece with respect to the positioning pin.
- the positioning pin is provided with an enlargement / reduction function to eliminate the clearance. This can be expected to improve positioning accuracy.
- the inside of the positioning insertion part of the positioning means becomes complicated, and as a result, the rigidity of the positioning J insertion part decreases, so that this can be prevented by inserting the positioning. It is necessary to increase the diameter of the part. And, as described in (1), when a sliding part that moves in a straight line connecting to the main positioning means is provided like the sub-positioning means, the structure becomes more complicated.
- the diameter adjusting portion includes a spherical surface instead of the tapered surface, and the spherical surface is in contact with the inner diameter gripping member.
- the diameter adjusting portion has a spherical surface in place of the tapered surface, and the spherical surface is in contact with the inner diameter gripping member. Positioning accuracy can be improved.
- the inner diameter gripping member contacts the inner surface of the auxiliary positioning hole at three or more points. It is characterized by that.
- the inner diameter gripping member contacts the inner surface of the sub-positioning hole at three or more points.
- the center axis of the sub-positioning hole can be aligned, and the workpiece can be positioned with high accuracy.
- the slide portion including the second smooth surface is disposed on the base block member.
- the slide block is formed in a slide block, and the slide block is provided with a insertion portion block provided with the auxiliary positioning insertion portion.
- the invention described in (5) is the workpiece positioning method according to any one of (1) to (4), wherein the slide portion having the second smooth surface is provided on the base block member.
- the slide block is formed on the slide block to be installed, and the slide block is equipped with an insertion block with a sub-positioning insertion part. There is a merit that does not need to be provided and can share the main positioning means and the parts of the insertion block.
- an air supply flow path is connected to the slide portion to prevent foreign matter from entering between the first smooth surface and the second smooth surface. It is characterized by this.
- the invention described in (6) is the workpiece positioning method described in (1), wherein an air supply flow path is connected to the slide portion, and foreign matter is mixed between the first smooth surface and the second smooth surface. It becomes possible to prevent. By constantly supplying air from the air supply path, it is possible to prevent dust from entering between the first smooth surface and the second smooth surface and oil from entering. wear. In the case of sliding between surfaces, it is possible that the foreign substance is mixed in and the foreign object is trapped, and the movement of the positioning device may deteriorate, but this situation can be avoided by supplying air. It becomes possible to prevent.
- a main positioning means and a sub-positioning means protruding on the reference surface are provided, the main positioning means is formed in the main positioning hole formed in the work, and the sub-positioning hole formed in the work is formed in the sub-positioning hole.
- the main positioning means includes a main positioning insertion portion having a circular outer periphery, which is inserted into the main positioning hole, and the sub-positioning
- the means includes a base block member in which a first smooth surface parallel to a straight line connecting the main positioning unit and the sub positioning unit is formed to face each other, and the first block of the base block member.
- a second smooth surface that is in contact with the smooth surface is formed on the inner surface, and is inserted into the sub-positioning hole; and a sub-positioning insertion portion having a circular outer periphery, and when positioning the workpiece, The main positioning insertion portion of the determining means is inserted into the main positioning hole, and the auxiliary positioning insertion portion of the auxiliary positioning means is guided by the first smooth surface and moves on the straight line. A pitch error between the main positioning hole and the sub-positioning hole is absorbed and inserted into the sub-positioning hole.
- the main positioning means and the sub-positioning means provided on the reference surface are inserted into the main positioning hole and the sub-positioning hole formed in the work, and the work positioning is determined.
- the main positioning means includes a main positioning insertion portion having a circular outer periphery inserted into the main positioning hole, and the sub positioning means is parallel to a straight line connecting the main positioning means and the sub positioning means.
- a base block member having two surfaces formed with the first smooth surface facing each other, and a second smooth surface contacting the first smooth surface of the base block member is formed on the inner surface and inserted into the sub-positioning hole.
- the sub-positioning insertion portion of the sub-positioning means is guided by the first smooth surface and moves on a straight line, absorbing the pitch error between the main positioning hole and the sub-positioning hole, and Since it is inserted into the positioning hole, the sub-positioning means can move on the straight line connecting to the main positioning means, and the pitch error between the main positioning hole and the sub-positioning hole of the workpiece can be done without imposing an excessive burden on the main positioning means. Can be absorbed.
- the invention described in (7) is substantially the same as the invention described in (2), except that the second smooth surface is formed directly on the inner surface of the sub-positioning insertion portion.
- the second smooth surface when the second smooth surface is formed on the inner surface of the sub-positioning insertion portion, the second smooth surface can be formed integrally with the sub-positioning insertion portion, so that the number of parts can be reduced and the position of the sub-positioning insertion portion can be reduced. It can also contribute to downsizing. .
- the workpiece positioning apparatus has the following characteristics.
- a workpiece positioning apparatus comprising a main positioning means inserted into a main positioning hole formed in a workpiece and a sub positioning means inserted into a sub positioning hole formed in the workpiece on a reference surface.
- the main positioning means includes a main positioning insertion portion having a circular outer periphery inserted into the main positioning hole, and the sub positioning means is parallel to a straight line connecting the main positioning means and the sub positioning means.
- a base block member having at least two opposing first smooth surfaces, and a second smooth surface corresponding to the first smooth surface of the base block member, the first smooth surface being A slide portion that is guided and moves on the straight line; and a sub-positioning insertion portion that is provided at an upper portion of the slide portion and is inserted into the sub-positioning hole and has a circular outer periphery.
- the invention described in (8) is based on the positioning of a workpiece having the same configuration as in (1). Therefore, the sub-positioning means can move on the straight line connecting with the main positioning means, and it absorbs the pitch error between the main positioning hole and the sub-positioning hole of the workpiece without imposing an excessive burden on the main positioning means. It is possible to do this. In addition, if the dimensions of the machining part are determined with the main positioning means as the center, it will contribute to the improvement of machining accuracy as described in (1).
- the slide portion having the second smooth surface corresponding to the first smooth surface of the base block member is provided at the lower portion of the sub positioning insertion portion, the sub positioning insertion portion can be reduced in size. Therefore, it is possible to provide a workpiece positioning device that can accommodate a small-diameter knock hole and can absorb the pitch error between the main knock hole and the sub-knock hole formed in the workpiece.
- the sub-positioning means includes an inner diameter gripping member that contacts an inner surface of the sub-positioning hole, and a diameter adjustment that includes an outer peripheral surface that is in contact with the inner diameter gripping member. And moving the diameter adjusting portion or the inner diameter gripping member in the axial direction of the sub positioning means in a state where the sub positioning insertion portion is inserted into the sub positioning hole of the workpiece. Thus, the inner diameter gripping member is in contact with and presses the inner surface of the sub-positioning hole.
- the diameter adjusting portion includes a spherical surface instead of the tapered surface, and the spherical surface is in contact with the inner diameter gripping member.
- the invention described in (9) is a workpiece positioning device having the same configuration as in (2), it is possible to add an inner diameter gripping function of the auxiliary positioning hole to the auxiliary positioning means. Positioning accuracy can be increased by adding an inner diameter gripping function for each positioning hole to the main positioning means and sub-positioning means. Even in the configuration described in (10), as in (3), the diameter adjusting portion has a spherical surface instead of the tapered surface, and the spherical surface is in contact with the inner diameter gripping member. (7) It is possible to improve the positioning accuracy of the mark. Further, by adopting the structure described in (11), it is possible to improve the accuracy of the positioning device in the same manner as the positioning means described in (4).
- the inner diameter gripping member is in contact with the inner surface of the auxiliary positioning hole at three or more points.
- the sliding force provided with the second smooth surface is a sliding block disposed on the base block member.
- the slide block is configured to hold an insertion portion block provided with the auxiliary positioning insertion portion.
- the slide part is provided at the lower part of the sub-positioning insertion part, it is possible to contribute to the miniaturization of the sub-positioning insertion part.
- an air supply flow path is connected to the slide portion to prevent foreign matter from entering between the first smooth surface and the second smooth surface.
- a workpiece positioning device comprising: a main positioning means inserted into a main positioning hole formed in the workpiece; and a sub-positioning means inserted into a sub-positioning hole formed in the workpiece.
- the main positioning means is inserted into the main positioning hole.
- the secondary positioning means has at least two first smooth surfaces parallel to a straight line connecting the primary positioning means and the secondary positioning means so as to face each other.
- FIG. 1 shows a top view of the positioning device 10 of the first embodiment.
- FIG. 2 shows a side view of the positioning device 10 of the first embodiment.
- FIG. 3A shows a cross-sectional view taken along the line CC of FIG. 3B of the main positioning means 20 of the first embodiment.
- FIG. 3B shows a cross-sectional view of the main positioning means 20 taken along the line AA in FIG. 1 of the first embodiment.
- FIG. 4A shows a cross-sectional view taken along the arrow D-E shown in FIG. 4B of the auxiliary positioning means 30 of the first embodiment.
- FIG. 4B shows a cross-sectional view of the sub-positioning means 30 of the first embodiment taken along the line B-B shown in FIG.
- FIG. 5 shows a three-dimensional perspective view of the taper ring 32 of the first embodiment.
- FIG. 6 schematically shows a state in which the positioning device 10 according to the first embodiment is attached with the workpiece 15 having the pitch P between the holes 15 shifted.
- Figure 7 shows the ratio of the pitch error in the S1 direction of the machined hole in the first example. The compared graph is shown.
- FIG. 8 shows a graph comparing the pitch error in the S2 direction of the machined hole in the first embodiment.
- FIG. 9A shows a top view of the main positioning means 20 of the second embodiment.
- FIG. 9B shows a cross-sectional view of the main positioning means 20 corresponding to the AA arrow in FIG. 1 of the second embodiment.
- FIG. 1 O A shows a cross-sectional view of the sub-positioning means 30 of the second embodiment taken along the line FF shown in FIG. 10 B.
- FIG. 10B shows a cross-sectional view of the sub-positioning means 30 according to the second embodiment corresponding to the arrow BB shown in FIG.
- FIG. 11A shows a cross-sectional view of the sub-positioning means 30 of the third embodiment taken along the line G-G shown in FIG. 11B.
- FIG. 11B shows a cross-sectional view of the sub-positioning means 30 according to the third embodiment corresponding to the arrow BB shown in FIG.
- FIG. 12A shows a cross-sectional view of the main positioning means 20 of the fourth embodiment, taken along line HH shown in FIG. 12B.
- FIG. 12B ′ shows a cross-sectional view of the main positioning means 20 according to the fourth embodiment corresponding to the arrow AA shown in FIG.
- FIG. 13A shows a cross-sectional view of the sub-positioning means 30 according to the fourth embodiment, taken along line I-I shown in FIG. 13B.
- FIG. 13B shows a cross-sectional view of the sub-positioning means 30 according to the fourth embodiment corresponding to the arrow BB shown in FIG.
- FIG. 14A shows a top view of the main positioning means 20 of the fifth embodiment.
- FIG. 14B shows a cross-sectional view of the main positioning means 20 corresponding to the AA arrow in FIG. 1 of the fifth embodiment.
- FIG. 15A shows a cross-sectional view of the sub-positioning means 30 of the fifth embodiment, taken along the line J-J in FIG. 15B.
- FIG. 15B shows a cross-sectional view of the sub-positioning means 30 according to the fifth embodiment corresponding to the arrow BB shown in FIG.
- FIG. 16A shows a cross-sectional view of the sub-positioning means 30 of the sixth embodiment taken along the line K-L shown in FIG. 16B.
- FIG. 16B shows a cross-sectional view of the sub-positioning means 30 according to the sixth embodiment corresponding to the arrow BB shown in FIG.
- FIG. 17A shows a cross-sectional view taken along the arrow M-M shown in FIG. 17B of the auxiliary positioning means 30 of the seventh embodiment.
- FIG. 17B shows a cross-sectional view of the sub-positioning means 30 according to the seventh embodiment corresponding to the arrow BB shown in FIG.
- FIG. 18A shows an NN arrow cross-sectional view of the sub-positioning means 30 of the eighth embodiment shown in FIG. 18B.
- FIG. 18B shows a cross-sectional view of the sub-positioning means 30 according to the eighth embodiment corresponding to the arrow BB shown in FIG.
- FIG. 18C is an enlarged view of a portion X shown in FIG. 18A.
- FIG. 19 shows a vertical sectional view of the secondary knock pin 100 0 of Patent Document 5.
- FIG. 20 shows a horizontal sectional view of a portion of Patent Document 5 inserted into the work of the sub knock pin 100. Explanation of symbols
- FIG. 1 shows a top view of the positioning device 10 of the first embodiment.
- FIG. 2 shows a side view of the positioning device 10.
- the positioning device 10 includes a reference block 11, a reference sheet 12, a main positioning unit 20, and a sub-positioning unit 30, and can position the work 15.
- the main positioning means 20 and the secondary positioning means 30 are fixed to the reference block 11 with bolts.
- the reference block 11 is a block having a reference surface 11a shown in Fig. 3 and the like to be described later, and includes a plurality of first oil supply passages 11b and second supply passages 11c. An oil supply passage is formed. These oil supply passages are connected to an oil pump or the like so that pressurized oil can be supplied.
- an air supply channel for supplying compressed air may be formed as necessary.
- the air supplied from this air supply flow path is purged by blowing air toward the leading end of the main positioning means 20 and the sub-positioning means 30 to make it difficult to collect dirt. This is effective for high-precision positioning.
- the reference sheet 1 2 is a block that serves as a reference for the height of the work 15 and is provided at three power points on the reference block 1 1.
- a seat surface (not shown) is formed on the workpiece 15 at a position corresponding to the reference sheet 1 2, and comes into contact with the positioning device 10 when the workpiece 15 is installed.
- the Z-axis direction of 5 will be restricted.
- the position of the reference sheet 1 2 may be determined so as to correspond to the position where the seating surface can be formed on the work 15, but as far as possible on the reference block 1 1. It is desirable to be fixed to.
- the work 15 has a main positioning hole 16 and a sub-positioning hole 1 7 formed.
- the distance between the centers of the main positioning hole 16 and the sub-positioning hole 17 is The interval pitch is P.
- Fig. 3A shows the cross section of the main positioning means 2 0 as shown in Fig. 3B. The figure is shown.
- Fig. 3B shows a cross-sectional view of the main positioning means 20 taken along the line A-A shown in Fig. 1.
- the main positioning means 20 includes an insertion shaft 21, a taper ring 2 2, a base block 24, a piston 25 and the like. Of these, the insertion shaft 21 and the taper ring 2 2 correspond to the main positioning insertion portion.
- the insertion shaft 21 includes a tip portion 21a and a shaft portion 21b, and a shaft portion 21b is formed coaxially with the tip portion 21a of the trapezoidal cross section.
- the taper ring 2 2 is a circular part with a taper of C-shaped cross section that is attached to the lower part of the tip 2 1 a of the insertion shaft 2 1. For this reason, the taper ring 22 can be expanded and contracted in the radial direction.
- the base block 24 has a taper projection 24a and a base mating part 24b, and the base mating part 24b fits into the mating hole formed in the reference block 11 Positioned.
- the taper protrusion 24 a is formed so that the outer periphery contacting the inner peripheral surface of the taper ring 22 is tapered, and a through-hole through which the shaft portion 21 b passes is provided at the center.
- the taper protrusion 24 a is provided with a pin 23 that serves as a detent for the taper ring 22.
- An O-ring is provided on the outer periphery of the base fitting part 24 b to prevent the oil supplied from the first oil supply passage 11 b provided in the reference block 11 from leaking. .
- a cylindrical sliding surface 24 c is formed on the inner surface of the base mating part 24 b of the base block 24, and the piston 25 slides inside.
- O-rings are provided on the outer periphery of the piston 25 for the purpose of sliding and sealing.
- the screw 25 is threadedly connected to the shaft portion 2 1 b of the insertion shaft 21 at the top.
- the main positioning means 20 having such a configuration is illustrated when oil is supplied from the second supply passage 11 c formed in the reference block 11 1 and hydraulic pressure is applied to the oil supply passage 24 d. 3 From state B, piston 25 moves downward. The insertion shaft 2 1 connected to the piston 25 is lowered accordingly, and as a result, the taper 2 2 provided on the insertion shaft 2 1 is connected to the outer peripheral surface of the taper projection 2 4 a. The diameter is expanded along.
- the inner diameter of the main positioning hole 16 formed in the work 15 is held by the outer diameter of the taper ring 2 2.
- the outer surface of the taper protrusion 24 a is conical, and presses the inner surface of the taper ring 22 evenly outward.
- FIG. 4A shows a cross-sectional view of the auxiliary positioning means 30 taken along the line D-E in FIG. 4B.
- FIG. 4B shows a cross-sectional view of the sub-positioning means 30 taken along the line BB in FIG.
- the auxiliary positioning means 30 includes an insertion shaft 31, a taper ring 32, a taper projection member 34, a base upper block 35, a base lower block 36, and a piston 37.
- the sub-positioning means 30 has a structure similar to that of the main positioning means 20, but different numbers are assigned to the same-shaped parts for the purpose of distinction.
- the insertion shaft 3 1 and the taper ring 3 2 correspond to the auxiliary positioning insertion part.
- the insertion shaft 3 1 has substantially the same shape as the insertion shaft 2 1, and includes a tip portion 3 1 a and a shaft portion 3 1 b.
- the taper ring 3 2 has the same function as the taper ring 2 2 and is attached to the tip portion 3 1 a.
- the base upper block 35 and the base lower block 36 correspond to base block members, and are parts C in which the base block 24 is divided.
- the base lower block 3 6 is formed with a base fitting portion 3 6 b and is fitted and positioned in a fitting hole provided in the reference block 1 1.
- the fitting protrusion 3 6 a is fitted into a fitting recess 35 a formed in the base upper block 35.
- a cylindrical sliding surface 36c is formed on the inner surface of the base fitting portion 36b, and the screw 37 slides inside the cylindrical sliding surface 36c.
- the outer periphery of the piston 37 is provided with an O-ring for sliding and sealing purposes.
- the fitting protrusion 36 a of the bottom lower block 36 6 is formed with a holding groove 36 f having two opposing sliding holding portions 36 6 e.
- the sliding holding surface 3 6 e corresponds to the first smooth surface.
- the sliding holding surface 3 6 e is formed to be slidable with the sliding surface 3 4 c of the sliding flange portion 3 4 formed on the taper projection member 3 4.
- the sliding holding surface 36 e is provided so as to be parallel to the central straight line CL.
- the base lower block 3 6 is provided with an oil supply passage 3 6 d, and the oil supplied from the second supply passage 1 1 c applies oil pressure to the piston 3 7 to 3 7 can be lowered.
- the taper projection member 3 4 includes a taper projection portion 3 4 a and a sliding flange portion 3 4 b.
- the taper projection member 34 held so as to be sandwiched between the base upper block 35 and the base lower block 36 is a component corresponding to the taper projection 24a of the base block 24.
- the tapered protrusion 34a is provided with a conical taper whose outer periphery is in contact with the taper 32 and expands and contracts.
- a part of the outer peripheral surface of the taper projection 3 4 a is provided with a pin 3 3, and the taper ring 3 2 It has become a detent.
- the sliding flange portion 3 4 b has sliding surfaces 3 4 c corresponding to the second smooth surface on both end surfaces thereof, and slides on the sliding holding surface 3 6 e of the base lower block 3 6. Sliding flange 3 4 b corresponds to the slide.
- the thickness of the sliding flange portion 3 4 b is slightly thinner than the depth of the holding groove 3 6 f formed in the fitting projection 3 6 a of the base lower block 3 6, and the taper projection member 3 4 It is configured to slide lightly.
- An air supply path is connected to the holding groove 36 f, and it is always purged so that dust does not enter.
- a seal member 4 1 is provided on the upper surface of the base upper block 35 so as to seal the outer periphery of the taper projection member 3 4.
- the piston 3 7 is a part corresponding to the piston 25, but in order to hold the holding flange 4 0 that engages with the insertion shaft 3 1, the piston lid 3 8 is screwed together.
- One end of the pressure panel 39 is in contact with the upper surface of the piston lid body 38, and the other end of the pressure panel 39 is in contact with the lower surface of the holding flange 40.
- An O-ring is provided on the outer periphery of the piston lid body 3 8 and in contact with the inner surface of the piston 37. From the first oil supply passage 1 1 b of the reference block 11 The structure is such that the supplied oil does not enter.
- the holding flange 40 is urged from below by the pressure spring 39 and pressed against the flange formed on the piston 37, and there is a margin around the holding flange 40. Therefore, it is possible to move according to the movement of the taper projection member 3 4.
- the sub-positioning means 30 having such a configuration is similar to the raw positioning means 20 in that the oil is supplied from the second supply flow path 11c and the oil supply flow path 36 is applied with the oil pressure from the state shown in FIG. 4B.
- the piston 3 7 moves downward.
- the insertion shaft 3 1 screwed into the retaining flange 40 engaged with the piston 3 7 moves as the piston 3 7 descends.
- the insertion shaft 3 Tapered ring provided in 1 3 2 is a taper protrusion
- the diameter is increased along the outer peripheral surface of the tapered protrusion 3 4 a of the material 3 4.
- FIG. 5 shows a three-dimensional perspective view of the taper ring 32 of the first embodiment.
- the taper 3 2 that performs the same function as the taper 2 2 is provided with a cut as shown in FIG. 5, and the diameter increases when the taper projection 3 4a is inserted.
- the diameter of the taper rings 2 2 and 3 2 is increased, the inner diameter of the auxiliary positioning hole 17 formed in the work 15 is held by the outer diameter of the taper rings 2 2 and 3 2.
- the taper projections 24 a and 34 a have outer peripheral surfaces formed in a conical shape, and press the inner surfaces of the taper rings 22 and 32 evenly outward.
- the sub-positioning means 30 is provided with the sliding surface 3 4 c and the sliding holding surface 3 6 e, the taper protrusion member 3 4 that becomes the sub-positioning insertion portion of the sub-positioning means 30 is It can be moved in the direction of the main positioning means 20.
- the positioning device 10 of the first embodiment configured as described above has the following operational effects.
- FIG. 6 shows a schematic view of the positioning device 10 with a workpiece machined with the pitch P between holes of the workpiece 15 shifted.
- Figure 6 corresponds to Figure 1.
- the sub-positioning means 30 can slide parallel to the sliding holding surface 3 6 e of the holding groove 3 6 f. Since the taper protruding member 3 4 is provided, the tip of the auxiliary positioning means 30 inserted into the auxiliary positioning hole 17 of the work 15 moves in the direction of the main positioning means 20.
- the reference pitch P 1 which is the distance between the center of the stage 20 and the sub-positioning means 30 before moving, is the distance between the center of the main positioning hole 16 and the center of the sub-positioning hole 17 It becomes equal to the pitch P.
- a round pin is used as the positioning pin for the main positioning means 20 side and a dier pin is used as the positioning pin for the sub-positioning means 30 side.
- a pitch error in which the hole pitch P is larger or smaller than the reference pitch P 1 causes an error in the position of the additional hole 18 in the work 15.
- Figure 7 shows a comparison of the pitch error of the S1 component of the machined hole.
- Figure 8 shows a comparison of the pitch error of the S2 component of the machined hole.
- the horizontal axis represents the pitch error.
- the pitch error is a result of intentionally changing the hole pitch P of the workpiece 15.
- the vertical axis shows the dimensional change at the drilled hole position.
- Fig. 7 shows the S1 component
- Fig. 8 shows the S2 component dimensions.
- the numerical value on the vertical axis shows the deviation from the reference value.
- the solid line shows the case where the positioning device 10 of the first embodiment is used, which is “implementing the present invention”.
- the broken line indicates data when positioning is performed using a conventional fixing pin with a fixed reference pitch P 1, and is “conventional fixing pin”.
- the position of 8 is such that as the pitch P between holes increases, the S 1 component increases to the right and the S 2 component decreases to the right. In other words, it shows that a rotational deviation in the 0 direction has occurred from the straight line connecting the main positioning means 20 and the sub-positioning means 30.
- the position of the machined hole 18 formed on the workpiece 15 of the “implementation of the present invention” varies slightly to a reference value, although there is some variation.
- FIGS. 7 and 8 show that if the workpiece 15 is positioned by the positioning device 10 of the first embodiment, machining with high accuracy can be realized.
- the machining hole 1 8 of the workpiece 15 is designed based on the main positioning hole 16. Therefore, since the displacement in the 0 direction can be regulated by the sub-positioning means 30 based on the main positioning means 20 of the positioning device 10, the machining hole 18 can be precisely machined in the work 15. .
- the main positioning hole 1 6 and the sub positioning hole 1 7 of the work 15 are provided in the process before the machining of the additional hole 1 8, but the main positioning hole 1 6 and the sub positioning hole 1 7 If the pitch P between holes is not set accurately, the machining accuracy of the machined holes 18 will be affected.
- the positioning device 10 of the first embodiment absorbs such a pitch error of the pitch P between holes, and even if there is a variation in the pitch P between holes, the machining accuracy of the machining holes 18 in the workpiece 15 is improved. It becomes possible to secure.
- the positioning device 10 is structurally loaded on the main positioning means 20 and the auxiliary positioning means 30. Since the reference of the Z axis direction of the work 15 is received by the reference sheet 1 2, it is not affected by the overall weight of the work 15, but it supports a part of it and the hole 1 8 The force generated by the processing machine is also received.
- the main positioning means 20 and the sub-positioning means 30 of the positioning device 10 are required to have a certain rigidity.
- the rigidity is low, the life of the positioning device 10 can be shortened, so it is desirable to make the rigidity as high as possible.
- the main positioning means 2 0 and the sub-positioning means 30 have an expansion / contraction function.
- the taper protrusion 2 4 a of the block 2 4 and the taper protrusion 3 4 a of the taper protrusion member 3 4 connect the tape ring 2 2 and the taper ring 3 2 to the screw 2 5 and the screw 3. It is realized by expanding and contracting by applying hydraulic pressure to 7 and by pinching the inner diameter of the main positioning hole 1 6 and sub-positioning hole 1 7 of the work 15, Clearance can be eliminated and positioning accuracy can be improved.
- the main positioning means 20 and the sub-positioning means 30 have a complicated structure, and the sub-positioning means 30 has a direction in the direction of the main positioning means 20. It has a function to translate.
- Cited Document 5 if this function is provided in the pin, the internal structure of the sub-positioning means 30 will be further complicated, and the number of parts will increase, resulting in lower rigidity. . For this reason, the outer diameter of the pin must be increased.
- the sliding flange portion 3 4 b is configured to be positioned below the tenor ring 32.
- the sliding flange portion 3 4 b can be made larger in diameter than the tapered protrusion portion 3 4 a, so that the sliding surface 3 4 c can be widened and the rigidity can be increased. Therefore, parallel movement is possible without lowering the rigidity of the tip of the auxiliary positioning means 30 inserted in the auxiliary positioning hole 17.
- the main positioning means 2 0 and the sub positioning means 30 provided on the reference surface 11 a are connected to the main positioning formed on the work 15. Insert into hole 1 6 and secondary positioning hole 1 7 In the positioning method of work 15 to determine the position of the workpiece 15, the main positioning means 20 is inserted into the main positioning hole 16, the insertion shaft 21 having a circular outer periphery and the taper ring Sub-positioning means with 2 2
- Base lower block 3 6 Sliding surface corresponding to the holding surface 3 6 e and parallel to the center straight line CL 3
- the sub positioning means 30 can move on the central straight line CL connected to the main positioning means 20 and the main positioning hole 16 of the work 15 and the sub positioning means 16 can be connected to the sub positioning means 20 without undue burden on the main positioning means 20. It is possible to absorb the pitch error of the pitch P between holes with the positioning hole 1 7.
- the slide mechanism is not provided inside the sub-positioning insertion portion of the sub-positioning means 30, the internal structure is simplified, and it is possible to realize a small-diameter insertion portion while maintaining rigidity.
- the sub-positioning means 30 contacts the inner surface of the sub-positioning hole 17
- the taper ring 3 2 and the taper protrusion member 3 4 provided with the outer peripheral surface of the taper protrusion 3 4 a whose outer peripheral surface is in contact with the taper ring 3 2 are inserted into the auxiliary positioning hole 17 of the work 15 Shi With the shaft 3 1 and the taper ring 3 2 inserted, the taper member 3 4 or the taper ring 3 2 is translated in the axial direction of the auxiliary positioning means 30 so that the taper ring 3 2 Since the sub-positioning hole 17 is in contact with and pressed against the inner surface, the sub-positioning means 30 can be added with the function of gripping the inner diameter of the sub-positioning hole 17.
- the positioning accuracy can be increased by adding an inner diameter gripping function for each positioning hole to the main positioning means 20 and the secondary positioning means 30.
- the positioning hole for the positioning pin has a clearance with a large contact gap to improve workability. Did you? A clearance of about several tens of holes is provided even for a hole of about ⁇ 10, and this clearance makes it easy to insert and remove the positioning hole in the work 15 with respect to the positioning pin.
- the main positioning means 2 0 and the auxiliary positioning means 30 provided on the reference surface 11a are connected to the main positioning formed on the work 15 Insert into hole 16 and sub-positioning hole 17 to determine the position of work 15 5
- Positioning device 10 of work 15 5 Main positioning means 2 0 is inserted into main positioning hole 16
- the sub-positioning means 30 includes a main positioning means 20 and a sub-positioning means 30.
- the sliding holding surface 3 6 e parallel to the center line CL to be connected is formed on the base holding block 3 6 and the base holding block 3 6 e of the base lower block 3 6 e formed at least on two sides facing each other.
- the sliding flange part 3 4 b is provided at the upper part of the sliding flange part 3 4 b with the sliding surface 3 4 c formed parallel to the central straight line CL, and the sliding flange part 3 4 b, and inserted into the auxiliary positioning hole 17
- the insertion shaft 3 1 and the taper 3 2 having a circular outer periphery are provided, it is possible to provide the positioning device 10 having the same effect as the positioning method described in (1-1).
- the auxiliary positioning means 30 contacts the inner surface of the auxiliary positioning hole 17 A taper protrusion 3 2 and a taper protrusion 3 4 having a taper protrusion 3 4 with an outer peripheral surface in contact with the tape ring 3 2, and a taper protrusion member 3 4 having an outer peripheral surface of the taper 3 2.
- ⁇ ⁇ ⁇ Taper projection 3 2 and taper ring 3 2 are inserted into taper protruding member 3 4 or taper ring 3 2 in parallel with the auxiliary positioning means 30 in the axial direction.
- it since it contacts and presses the inner surface of the sub-positioning hole 17, it is possible to provide the positioning device 10 having the same effect as the positioning means described in (1-2).
- the positioning device 10 of the second embodiment is different from the positioning device 10 of the first embodiment in the internal structure of the main positioning means 20 and the sub-positioning means 30, but the other structures are the same.
- FIG. 9A shows a top view of the main positioning means 20 of the second embodiment.
- Fig. 9B shows a cross-sectional view of the main positioning means 20 corresponding to the A-A arrow in Fig. 1.
- the main positioning means 20 includes an insertion cap member A 21, an inner diameter gripping ball A 22, a base block A 24, a piston A 25, a taper shaft A 27, and the like. Of these, the insertion cap member A 21 corresponds to the main positioning insertion portion.
- the insertion cap member A 2 1 is formed in a cylindrical shape, and has a shaft hole A 2 1 b in which the taper shaft A 2 7 can be held.
- the tip cap A 2 1 a is the part that is inserted into the main positioning hole 16 of the work 15, and the pole hole A 2 1 c through which the inner diameter gripping ball A 2 2 moves is provided at three force points. .
- a ball hole A 2 1 c is provided every 1 20 °.
- the insertion cap member A 2 1 is held by the base block A 2 4 at the fitting portion A 2 1 d.
- the inner diameter gripping ball A 2 2 is the part that contacts the main positioning hole 1 6 ⁇ wall of the work 15 and the ball hole A 2 1 c of the insertion cap member A 2 1 is moved up and down the taper shaft A 2 7 It moves in the radial direction of the insertion cap member A 2 1.
- the main positioning means 2 0 is fixed to the reference block 1 1, and the base fitting part A 2 4 is inserted into the fitting hole formed in the reference block 1 1.
- b is inserted and positioned.
- the fitting hole A 2 4 a is a hole for holding the fitting part A 2 1 d of the insertion cap member A 2 1, and a hook is provided on the upper part of the fitting part A 2 1 d. By positioning, it is positioned in the height direction.
- the fitting hole A 2 4 a is also provided with a groove corresponding to the flange of the fitting part A 2 1.
- Cylindrical sliding surface A 2 4 c is formed on the inner surface of base block A 2 4 b of base block A 2 4, and piston A 2 5 slides inside.
- the outer periphery of the piston A 25 is provided with an O-ring for sliding and sealing purposes.
- a screw lid A 2 6 is screwed onto the screw A 25.
- One end of the pressure spring A 2 8 is in contact with the upper surface of the piston lid A 2 6, and the other end of the pressure panel A 2 8 is in contact with the lower surface of the taper shaft A 2 7. Yes.
- An O-ring is provided on the outer periphery of the piston lid A 2 6 and in contact with the inner surface of the piston A 2 5. The structure is such that the oil supplied from the oil supply channel 1 1 b does not enter.
- the taper shaft A 2 7 includes a tip tapered groove A 2 7 a and a flange portion A 2 7 b.
- the tip tapered groove A 2 7 a is formed so as to gradually deepen radially from the top.
- the inner diameter gripping balls A 2 2 are drawn at the two left and right force points.
- the tip tapered groove A 2 7 a is formed every 120 °.
- the position of the tip tapered groove A 2 7 a is provided at the same angle as the pole hole A 2 1 c.
- the flange portion A 2 7 b is formed so as to be hooked on the flange formed by the piston A 2 5 fc, and is pressed against the pressurizing panel A 2 8 from the lower side by the taper shaft.
- a 2 7 will operate in conjunction with piston A 2 5.
- the main positioning means 20 having such a configuration operates as follows.
- oil is supplied from the second supply flow path 1 1 c formed in the reference block 1 1 to the oil supply flow path A 2 4 d formed in the base block A 2 4. Then, it descends by hydraulic pressure. In addition, oil is supplied from the first oil supply passage 1 1 b formed in the reference block 11 1, hydraulic pressure is applied to the lower part of the piston A 25, and the piston A 25 increases.
- the taper shaft A 2 7 is raised, the taper Since the inner diameter gripping ball A 2 2 does not come into contact with the tapered groove A 2 7 a of the shaft A 2 7 and a space is created, the ball hole A 2 1 c can be retracted in the radial direction.
- FIG. 10A shows a cross-sectional view taken along the line FF of FIG. 10B of the auxiliary positioning means 30 of the second embodiment.
- FIG. 10B shows a cross-sectional view of the sub-positioning means 30 corresponding to the arrow B-B in FIG.
- Sub-positioning means 30 includes insertion cap member A 3 1, inner diameter gripping ball A 3 2, base upper block A 3 5, base lower block A 3 6, and piston A 3 7 etc. Become.
- the insertion cap member A 3 1 corresponds to the auxiliary positioning insertion part and is formed in a circular shape. Further, the collar portion is provided with a shaft hole A 3 1 d capable of holding the taper shaft A 40.
- the tip cap A 3 1 a is the part that is inserted into the sub-positioning hole 1 7 of the work 15 and the pole hole A 3 1 c through which the inner diameter gripping ball A 3 2 moves at the three force points Is provided.
- a flange A 3 1 b is provided at the lower part of the insertion cap member A 3 1 and is held by the base upper block A 3 5 and the base lower block A 3 6.
- Sliding surfaces A 3 1 e are formed on both end surfaces of the flange portion A 3 1 b and slide with the sliding holding surfaces A 3 6 e formed on the base lower block A 3 6.
- the thickness of the flange A 3 1 b is slightly thinner than the depth of the holding groove A 3 6 f formed on the mating protrusion A 3 6 a of the bottom block A 3 6 and the flange A 3 1 b is configured to slide lightly. Protection An air supply path is connected to the holding groove A 3 6 f and is always purged so that dust does not enter.
- a seal member A 4 1 is provided on the upper surface of the base upper block A 3 5 so as to seal the outer periphery of the insertion cap member A 3 1.
- the inner diameter gripping ball A 3 2 is a part that comes into contact with the inner wall of the sub positioning hole 1 7 of the work 15 and the ball hole A 3 1 c of the insertion cap member A 3 1 is inserted as the taper shaft A 40 moves up and down. Move in the radial direction of the cap member A 3 1.
- the inner diameter gripping ball A 3 2 corresponds to the inner diameter gripping member.
- Base upper block A 3 5 and base lower block A 3 6 are parts corresponding to the base block member.
- the base upper block A 3 5 is formed with a fitting recess A 3 5 a
- the base lower block A 3 6 is formed with a fitting projection A 3 6 a.
- Base fitting block A 3 6 b is formed in the base lower block A 3 6 and the base fitting block A 3 6 b is inserted into the fitting hole formed in the reference block 1 1. Is positioned.
- a cylindrical sliding surface A 3 6 c is formed on the inner surface of the base fitting part A 3 6 b, and the screw A 3 7 slides.
- a holding groove A 3 6 f in which two opposing sliding holding surfaces A 3 6 e are formed on the fitting protrusion A 3 6 a formed on the upper part of the base lower block A 3 6 f Is formed.
- This sliding holding surface A 36 6 e corresponds to a first smooth surface, and is formed in parallel with a central straight line CL connecting the centers of the main positioning means 20 and the sub positioning means 30.
- An oil supply passage A 3 6 d is formed in the lower base block A 3 6.
- the piston A 3 7 drops. I will give you.
- the rise of the piston A 3 7 is performed by supplying oil from the first oil supply passage 1 1 b.
- the flange part A 3 1 b of the insertion cap member A 3 1 is arranged in the holding groove A 3 6 f of the base lower block A 3 6, and the base upper block A 3 5 By fixing, the flange portion A 3 1 b of the insertion cap member A 3 1 can be held by the base upper block A 3 5 and the base lower block A 3 6.
- a screw lid A 3 8 is screwed onto the screw A 3 7.
- One end of the pressure panel A 3 9 is in contact with the upper surface of the piston lid A 3 8 and the other end of the pressure panel A 3 9 is in contact with the lower surface of the taper shaft A 40. Yes.
- An O-ring is provided on the outer periphery of the piston lid A 3 8 and in contact with the inner surface of the piston A 3 7. The structure is such that the oil supplied from the oil supply channel 1 1 b does not enter.
- Taper shaft A 40 corresponds to the diameter adjustment section and has a tapered groove at the tip.
- a 4 0 a and flange portion A 4 0 b are provided.
- the tip tapered groove A 40 0 a is formed so as to gradually deepen radially from the top.
- the inner diameter gripping balls A 3 2 are drawn at the two left and right force points, but in reality there are three inner diameter gripping balls A 3 2 in the same way as in Fig. 1 OA.
- a tapered end groove A 40 a is formed every 0 degrees.
- the flange portion A 40 b is formed so as to be hooked on the ridge formed on the piston A 37, and is pressed from the lower side by the pressure panel A 39 to form the taper shaft A 4 0 works in conjunction with piston A 37.
- the sub-positioning means 30 having such a configuration is similar to the main positioning means 20, and the oil is supplied to the second supply flow path 11 c formed in the reference block 11 1, so that the base lower block 30 Oil pressure is applied to the oil supply flow path A 3 6 d formed in the rack A 3 6, and the piston A 3 7 descends.
- oil is supplied from the first oil supply passage 1 1 b
- hydraulic pressure is applied from the lower part of the piston A 3 7 and the piston lid body A 3 8, and the piston A 3 7 rises.
- the taper shaft A 40 also moves up and down, and the inner diameter gripping ball A 3 2 that contacts the tapered groove A 40 of the tip of the taper shaft A 40 moves the ball hole A 3 1 c in the radial direction. Moving.
- the sub-positioning means 30 is provided with the sliding surface A 3 1 e and the sliding holding surface A 3 6 e, the taper protrusion member A that becomes the insertion portion for the sub-positioning of the sub-positioning means 30. 34 can be translated in the direction of the main positioning means 20.
- the positioning device 10 of the second embodiment configured as described above has the following operational effects.
- the effect of the second embodiment is the same as that of the first embodiment.
- the work 15 can be accurately centered around the main positioning means 20. Positioned. This is because the misalignment in the 0 direction can be corrected by adjusting the sub positioning means 30 along the center straight line CL.
- the sub positioning means 3 0 uses the main positioning means 20 as a reference in the 0 direction. Can be controlled Therefore, the machining hole 1 8 can be precisely machined in the work 15.
- the main positioning means 20 and the secondary positioning means 30 provided on the reference surface 11a are connected to the main positioning formed on the work 15
- the main positioning means 20 is inserted into the main positioning hole 16 and the outer circumference is circular.
- the auxiliary positioning means 30 has a sliding holding surface A 3 6 e parallel to the central straight line connecting the main positioning means 20 and the secondary positioning means 30.
- the base lower block A 3 6 formed on the two opposite surfaces and the sliding holding surface A 3 6 e of the base lower block A 3 6 and formed parallel to the central straight line CL.
- the insertion cap member A 21 of the main positioning means 20 is inserted into the main positioning hole 16 when the workpiece 15 is positioned.
- the flange A 3 1 b of the secondary positioning means 30 is guided by the sliding holding surface A 3 6 e and moves on the center straight line CL.
- the main positioning hole 1 6 and the secondary positioning hole 1 The insertion cap member A 3 1 is inserted into the auxiliary positioning hole 1 7 by absorbing the pitch error with respect to 7.
- the sub positioning means 30 can move on the central straight line CL connected to the main positioning means 20, and the main positioning hole 16 and the sub positioning means 16 can be connected to the sub positioning means 20 without placing an excessive burden on the main positioning means 20. It is possible to absorb the pitch error of the pitch P between holes with the positioning hole 1 7.
- the slide mechanism is not provided inside the sub-positioning insertion portion of the sub-positioning means 30, the internal structure is simplified, and a small-diameter insertion portion can be realized while maintaining rigidity.
- the sub-positioning means 30 contacts the inner surface of the sub-positioning hole 17.
- the inner diameter gripping ball A 3 2 is moved into the secondary positioning hole 1 by moving the taper shaft A 4 0 in the axial direction of the secondary positioning means 3 0. Since it is in contact with the inner surface of 7 and pressed, the auxiliary positioning means 30 can be added with the inner diameter gripping function of the auxiliary positioning hole 17.
- the positioning accuracy can be increased by adding an inner diameter gripping function for each positioning hole to the main positioning means 20 and the sub-positioning means 30.
- the positioning hole for the positioning pin is provided with a larger clearance so as to improve workability. Therefore, even a hole with a diameter of about 1 O mm is provided with a clearance of about several tens of zm, and this clearance makes it easy to insert and remove the positioning hole provided in the workpiece 15 with respect to the positioning pin. .
- the inner diameter gripping ball A 3 2 is 3 to the inner surface of the sub-positioning hole 17. Since the contact is made at the point or more, the center axis of the auxiliary positioning hole 17 can be aligned with the center axis of the taper shaft A 40, and the inner diameter gripping ball A 3 2 is accurate against the inner surface of the auxiliary positioning hole 17 Good positioning is possible.
- the main positioning means 2 0 and the auxiliary positioning means 30 provided on the reference surface 11a are connected to the main positioning formed on the work 15
- the main positioning means 2 0 is inserted into the main positioning hole 1 6, Outside
- the insertion cap member A 2 1 having a circular circumference is provided, and the auxiliary positioning means 30 is a sliding holding surface A 3 6 e parallel to the central straight line CL connecting the main positioning means 20 and the auxiliary positioning means 30.
- Insertion cap A with a circular outer periphery, provided on flange A 3 1 b with formed sliding surface A 3 1 e, and on top of flange A 3 1 b and inserted into secondary positioning hole 1 7 3 1 is provided, so that it is possible to provide a positioning device 10 having the same effect as the positioning method described in (2-1).
- the secondary positioning means 30 is connected to the inner surface of the secondary positioning hole 17
- the inner diameter gripping ball A 3 2 in contact with it, and the taper shaft A 40 with the tip tapered groove A 4 0 a whose outer peripheral surface is in contact with the inner diameter gripping ball A 3 2.
- the taper shaft A 40 With the insertion cap member A 3 1 inserted, the taper shaft A 40 is translated in the axial direction of the auxiliary positioning means 30 so that the inner diameter gripping ball A 3 2 becomes the auxiliary positioning hole 1 7 Therefore, it is possible to provide a positioning device 10 having the same effect as the positioning means described in (2-2).
- the positioning device 10 of the third embodiment has the same configuration except that the positioning device 10 of the second embodiment is different from the sub-positioning means 30. The That is, a modification of the sub positioning means 30 of the second embodiment is shown in the third embodiment. Therefore, the configuration of the sub positioning means 30 will be described.
- FIG. 11A shows a cross-sectional view of the auxiliary positioning means 30 of the third embodiment taken along the line G-G shown in FIG. 11B.
- FIG. 11B shows a cross-sectional view of the auxiliary positioning means 30 corresponding to the arrow B-B in FIG.
- Sub-positioning means 30 includes insertion cap member B 3 1, inner diameter gripping ball B 3 2, base upper block B 3 5, base lower block B 3 6, piston B 3 7, etc. Power.
- the insertion cap member B 3 1 is a member corresponding to the insertion cap member A 3 1, is formed in a cylindrical shape, and has a ball hole B 3 1 d capable of holding the expansion / contraction pole B 40. .
- the tip cap B 3 1 a is the part that is inserted into the sub-positioning hole 17 of the work 15, and the ball hole B 3 1 c through which the inner diameter gripping pole B 3 2 moves is provided at 3 locations.
- a flange portion B 3 1 b is provided at the lower portion of the insertion cap member B 3 1, and is held by the base upper block B 35 and the base lower block B 36.
- the flange B 3 1 b has sliding surfaces B 3 1 e formed on both end surfaces thereof, and slides with the sliding holding surface B 3 6 e formed on the base lower block B 3 6.
- the flange B 3 1 b is slightly thinner than the depth of the holding groove B 3 6 f formed in the fitting projection B 3 6 a of the base lower block B 3 6, and the flange B 3 1 b is configured to slide lightly.
- the fact that the oil supply passage B 3 6 d is connected to the holding groove B 3 6 f also has the purpose of contributing to sliding lubrication. Therefore, a seal member B 4 1 is provided on the upper surface of the base upper block B 35 so as to seal the outer periphery of the insertion cap member B 3 1.
- the inner diameter gripping ball B 3 2 is a part that comes into contact with the inner wall surface of the sub positioning hole 1 7 of the work 15, and the ball hole B 3 1 c of the insertion cap member B 3 1 Insertion cap member B 3 Move in the radial direction of 1.
- FIG. 11 B two inner diameter gripping balls B 3 2 are depicted, but in reality, three inner positioning grippers B 3 2 are provided in the sub-positioning means 30.
- the base upper block B 3 5 is formed with a fitting recess B 35 a
- the base lower block B 3 6 is formed with a fitting projection B 3 6 a.
- a base fitting part B 3 6 b is formed in the base lower block B 3 6, and the base fitting part B 3 6 b is inserted into the fitting hole formed in the reference block 11. Positioned. A cylindrical sliding surface B 3 6 c is formed on the inner surface of the base fitting B 3 6 b, and the screw B 3 7 slides. O-rings for sliding and sealing purposes are provided on the outer periphery of the Biston B 37.
- the sliding holding surface B 36 e is formed in parallel with a center straight line C L connecting the centers of the main positioning means 20 and the sub positioning means 30.
- An oil supply passage B 3 6 d is formed in the base lower block B 3 6 so that the piston B 3 7 can be lowered.
- the piston B 3 7 is lowered.
- the piston B 37 is raised by supplying oil from the first oil supply passage 11 b.
- the flange portion B 3 1 b of the insertion cap member B 3 1 is disposed in the holding groove B 3 6 f of the base lower block B 3 6, and the base upper block B 3 5 By fixing the base cap B 3 5 and the base lower block B 3 6 The flange part B 3 1 b can be held.
- the ball B 3 7 is formed with a ball pressing portion B 3 7 a and a piston sliding portion B 3 7 b.
- the expansion / contraction ball B 40 is brought into contact with the upper surface of the ball pressing portion B 37 a, and the expansion / contraction ball B 40 is lifted / lowered by raising / lowering the piston B 37.
- the piston sliding part B 3 7 b slides with the cylindrical sliding surface B 3 6 c, and an O-ring is provided on the outer peripheral surface for sealing and sliding purposes.
- the expansion / contraction ball B 40 is a sphere having a diameter slidable on the inner surface of the ball hole B 3 1 d of the insertion cap member B 3 1, and the inner diameter gripping ball B 32 is in contact with the surface.
- One end of the pressure panel B 39 is in contact with the upper surface of the expansion / contraction ball B 40, and the other end of the pressure panel B 39 is in contact with the inner surface of the pole hole B 3 1 d of the insertion cap member B 3 1
- the pressurizing spring B 39 is urging the expanding / contracting ball B 40 downward.
- the insertion cap member serving as a sub positioning insertion portion of the sub positioning means 30 B 3 1 can be translated in the direction of the main positioning means 20.
- the sub-positioning means 30 of the third embodiment having such a configuration is connected to the second supply flow path 11 c formed in the reference block 11 1 in the same manner as the sub-positioning means 30 of the second embodiment.
- hydraulic pressure is applied to the oil supply passage B 3 6 d formed in the base lower block B 3 6, and the piston B 3 7 is lowered.
- the inner diameter gripping pole B 3 2 provided at the tip of the auxiliary positioning means 30 moves in the outer diameter direction and presses the inner surface of the auxiliary positioning hole 1 of the workpiece 15 so that the workpiece 15 Accurate positioning is possible.
- the same effect as the second embodiment can be obtained.
- the main positioning means 2 0 and the sub positioning means 3 0 provided on the reference surface 11 a are connected to the main positioning formed on the work 15. Determine the position of work 15 by inserting it into hole 16 and auxiliary positioning hole 17.
- main positioning means 20 is inserted into main positioning hole 16 and the outer periphery is circular.
- An insertion cap member A 2 1 is provided, and the secondary positioning means 30 is opposed to at least a sliding holding surface B 3 6 e parallel to the central straight line CL connecting the primary positioning means 20 and the secondary positioning means 30.
- the sliding surface formed parallel to the central straight line CL B 3 1 lb with B 3 1 e and upper part of flange B 3 1 b, inserted into the auxiliary positioning hole 1 7 Is provided with outer periphery as ⁇ inlet cap member B 3 1 of the circular, and in positioning the workpiece 1 5,
- the insertion cap member A 2 1 of the main positioning means 20 is inserted into the main positioning hole 16 and the flange B 3 1 b of the sub positioning means 30 is guided to the sliding holding surface B 3 6 e. Then, it moves on the center straight line CL, absorbs the pitch error between the main positioning hole 16 and the sub positioning hole 1 7, and the insertion cap member B 3 1 is inserted into the sub positioning hole 17.
- the sub positioning means 30 can move on the central straight line CL connected to the main positioning means 20, and the main positioning hole 16 and the sub positioning means 16 can be connected to the sub positioning means 20 without placing an excessive burden on the main positioning means 20. It is possible to absorb the pitch error of the pitch P between holes with the positioning hole 1 7.
- the slide mechanism is not provided inside the sub-positioning insertion portion of the sub-positioning means 30, the internal structure is simplified, and a small-diameter insertion portion can be realized while maintaining rigidity.
- the auxiliary positioning means 30 contacts the inner surface of the auxiliary positioning hole 17.
- An inner diameter gripping ball B 3 2 and an expansion / contraction pole B 40 with an outer peripheral surface in contact with the inner diameter gripping ball B 3 2, and an insertion cap member B 3 in the sub positioning hole 17 of the work 15 In the state where 1 is inserted, the expansion / contraction ball B 40 is translated in the axial direction of the auxiliary positioning means 30 so that the inner diameter holding ball B 3 2 comes into contact with and presses the inner surface of the auxiliary positioning hole 17 Therefore, the auxiliary positioning means 30 can be added with the function of gripping the inner diameter of the auxiliary positioning hole 17.
- the positioning accuracy can be increased.
- the positioning hole for the positioning pin has a clearance with a large contact gap to improve workability. Therefore, even a hole with a diameter of about 1 O mm is provided with a clearance of about several tens of ⁇ . This makes it easy to insert / remove the positioning holes provided in the bracket.
- the main positioning means 20 and the secondary positioning means 30 provided on the reference surface 11a are formed on the work 15 '.
- the main positioning means 2 0 is inserted into the main positioning hole 16 and inserted into the main positioning hole 1 6 and the sub positioning hole 17 to determine the position of the work 15
- the auxiliary positioning means 30 has a sliding holding surface B parallel to the central straight line CL connecting the main positioning means 20 and the auxiliary positioning means 30.
- 3 6 e corresponds to the base lower block B 3 6 formed on at least two sides facing each other and the sliding holding surface B 3 6 e of the base lower block B 3 6, and the center straight line CL Is provided at the top of the flange B 3 1 b and the sub-positioning hole 17 at the top of the flange B 3 1 b. Since the insertion cap member B 3 1 having a circular outer periphery is provided, it is possible to provide the positioning device 10 having the same effect as the positioning method described in (3-1).
- the secondary positioning means 30 is provided on the inner surface of the secondary positioning hole 17
- the expansion / contraction ball B 40 is translated in the axial direction of the sub-positioning means 30 in the state where the is inserted, the inner diameter gripping ball B 3 2 comes into contact with the inner surface of the sub-positioning hole 17 and Since the pressing is performed, it is possible to provide the positioning device 10 having the same effect as the positioning means described in (3-2).
- the positioning device 10 of the fourth embodiment is different from the positioning device 10 of the first embodiment in the structure of the main positioning means 20 and the sub-positioning means 30.
- the other configurations are the same.
- FIG. 12A is a cross-sectional view of the main positioning means 20 taken along the line H-H shown in FIG. 12B.
- FIG. 12B is a cross-sectional view of the main positioning means 20 corresponding to the arrow-in FIG.
- the main positioning means 20 includes a taper shaft piston C 21, an expansion / contraction dipper C 22, a base upper block C 24, a base lower block C 25, and the like.
- the taper shaft piston C 2 1 corresponds to a diameter adjusting portion, and includes a taper portion C 2 1 a, a shaft portion C 2 1 b, and a piston portion C 2 1 c.
- the tapered portion C 2 1 a is formed by gradually increasing the diameter of one end of the cylindrical shaft portion C 2 1 b, and has an inverted conical shape connected to the shaft portion C 2 1 b. I am doing.
- the other end of the shaft C 2 1 b is connected to the piston C 2 1 c and slides with the cylindrical sliding surface C 2 5 c which is the inner peripheral surface of the base lower block C 2 5 .
- An O-ring is provided on the outer periphery of the piston C 21c for sliding and sealing purposes.
- the expansion / contraction gripper C 2 2 corresponds to the inner diameter gripping member and the main positioning insertion part, and the parts that contact the outer peripheral surface of the taper part C 2 1 a and the shaft part C 2 1 b of the taper shaft piston C 2 1 A drip portion C 2 2 a and a flange portion C 2 2 b are formed.
- the drip part C 2 2 a is the part that contacts the main positioning hole 16 of the work 15, and the flange part C 2 2 b is the base upper block C 2 4 and the base lower block C 2 is the part held in 5.
- the expansion / contraction grino, ° C 22, is divided into three so that expansion / contraction is possible as the taper piston C 2 1 moves up and down.
- a ring C 2 3 is provided from the center of the expansion / contraction gripper C 2 2 and is held in contact with the outer peripheral surface of the taper portion C 2 1 a of the taper piston C 2 1. ing.
- a fitting recess C 2 4 a is formed in the base upper block C 2 4, and a fitting projection C 2 5 a formed in the base lower block C 2 5 is inserted and positioned. These correspond to the base block members.
- the base upper block C 2 4 and the base lower block C 2 5 hold the flange portion C 2 2 b of the expansion / contraction damper C 2 2.
- a seal member C 4 1 is provided on the upper part of the base upper block C 2 4 to prevent dust from entering from the outside.
- a base fitting portion C 2 5 b is formed and inserted into a fitting hole formed in the reference block 11 1 and positioned.
- a cylindrical sliding surface C 2 5 c is formed on the inner surface of the base fitting portion C 2 5 b, and the piston portion C 2 1 c of the taper shaft piston C 2 1 slides.
- the main positioning means 20 having such a configuration operates as follows.
- the piston section C 2 1 c is supplied with oil from the second supply flow path 1 1 c formed in the reference block 1 1 c and is formed in the base lower block C 2 5. Lowers when hydraulic pressure is applied to C 2 5 d. In addition, when oil is supplied from the first oil supply passage 1 1 b formed in the reference block 11, hydraulic pressure is applied to the lower part of the piston part C 2 1 c, and the piston part C 2 1 c rises. Along with this, the taper C 2 1 a moves up and down, and the expansion and contraction dipper C 2 2 contacting the outer peripheral surface of the taper C 2 1 a and the shaft C 2 1 b expands and contracts in the radial direction. To do.
- FIG. 13A shows a cross-sectional view taken along the line I-I of FIG. 13B of the sub-positioning means 30 of the fourth embodiment.
- FIG. 13B shows a cross-sectional view of the sub-positioning means 30 corresponding to the arrow B-B in FIG.
- the auxiliary positioning means 30 includes a taper shaft C 3 1, an expansion / contraction gripper C 3 2, a base upper block C 3 5, a base lower block C 3 6, a biston C 3 7, and the like.
- the taper shaft C 3 1 corresponds to a diameter adjusting portion, and includes a force with a taper portion C 3 1 a and a shaft portion C 3 1 b.
- the tapered portion C 3 1 a is formed by gradually increasing the diameter of one end of the cylindrical shaft portion C 3 1 b, and has an inverted conical shape connected to the shaft portion C 3 1 b. is doing.
- a screw is cut at the other end of the shaft portion C 3 1 b and a flange C 40 is screwed together.
- the expansion / contraction damper C 3 2 corresponds to the inner diameter gripping member and the main positioning insertion part, and is a part that contacts the outer peripheral surface of the taper part C 3 1 a and the shaft part C 3 1 b of the taper shaft C 3 1 A drip portion C 3 2 a and a flange portion C 3 2 b are formed.
- the drip part C 3 2 a is the part that contacts the auxiliary positioning hole 1 7 of the work 15, and the flange part C 3 2 b is the base upper block C 3 5 and the base lower block C 3 This is the part held by 6.
- the expansion / contraction gripper C 3 2 is divided into three so that the expansion / contraction can be performed as the taper shaft C 3 1 moves up and down.
- a ring C 3 3 is provided from the center of the expansion / contraction gripper C 3 2 and is held in contact with the outer peripheral surface of the taper portion C 3 1 a of the taper shaft C 3 1.
- Slide flange C 3 4 holds the upper surface of flange section C 3 2 b of expansion / contraction damper C 3 2, and slide groove C 3 5 formed in base upper block C 3 5 It is a part that slides on a.
- an expansion / contraction groove C 3 4 a is formed in which the flange portion C 3 2 b of the expansion / contraction damper C 3 2 can move in the radial direction.
- Two opposed sliding surfaces C 3 4 b are formed on the outer surface of the slide flange C 3 4.
- the sliding surface C 3 4 b corresponds to the second smooth surface.
- the expansion / contraction groove C 3 4 a is formed slightly deeper than the flange portion C 3 2 b so that the flange portion C 3 2 b can slide lightly.
- the base upper block C 3 5 is formed with a fitting recess C 3 5 b, and the fitting projection C 3 6 a formed in the base lower block C 3 6 is inserted for positioning.
- the slide groove C 3 5 a of the base upper block C 3 5 two opposing sliding holding surfaces C 3 5 c are formed in parallel with the central straight line C L.
- the sliding holding surface C 3 5 c corresponds to the first smooth surface. Then, the sliding surface C 3 4 b of the slide flange C 3 4 slides on the sliding holding surface C 3 5 c.
- a seal member 4 1 is provided on the upper part of the base upper block C 3 5 to prevent oil from scattering and to prevent dust and the like from entering from the outside.
- a base fitting portion C 3 6 b is formed and inserted into the fitting hole formed in the reference block 11 1 and positioned.
- a cylindrical sliding surface C 3 6 c is formed on the inner surface of the base fitting part C 3 6 b, and the piston C 3 7 slides.
- a second supply channel 1 1 formed in the reference block 1 1.
- An oil supply passage C 3 6 d is formed in the base lower block C 3 6 in order to lower the piston C 3 7 by the oil supplied from the force.
- Base upper block C 3 5 and base lower block C 3 6 correspond to base block members.
- Piston C 3 7 is connected to taper shaft C 3 1 and is cylindrical. Slide on sliding surface C 3 6 c. For this reason, O-rings are provided on the outer peripheral surface of the piston C 37 for sliding and sealing. Then, a screw lid C 3 8 is screwed into the lower portion of the screw C 3 7.
- One end of the pressure spring C 39 is in contact with the upper surface side of the screw lid C 3 8, and the other end of the pressure panel C 39 is screwed into the taper shaft C 3 1. It is in contact with the lower surface of
- the sub-positioning means 30 having such a configuration operates as follows.
- the piston C 3 7 is supplied with oil from the second supply channel 1 1 c formed in the reference block 1 1, and the oil supply channel C 3 6 formed in the base lower block C 3 6 It descends when hydraulic pressure is applied to d.
- the hydraulic force S is applied to the lower surface of the piston C 3 7 and the piston lid C 3 8. As a result, the piston C 3 7 rises.
- taper shaft C 3 1 moves up and down, expanding and contracting the abutment against the outer peripheral surfaces of taper C 3 1 a and shaft C 3 1 b.
- the pad C 3 2 expands and contracts in the radial direction.
- the secondary positioning means 30 is provided with the sliding surface C 3 4 b and the sliding holding face C 3 5 c, the expansion / contraction dull that becomes the secondary positioning insertion portion of the secondary positioning means 30. It is possible to translate the path C 3 2 in the direction of the main positioning means '20.
- the positioning device 10 of the fourth embodiment configured as described above has the following operational effects.
- the effect of the fourth embodiment is basically the same as that of the first embodiment.
- the workpiece 15 is positioned with high accuracy around the main positioning means 2 0. This is because the misalignment in the 0 direction can be corrected by the sub-positioning means 30 being adjusted along the center line CL.
- the sub positioning means 3 0 uses the main positioning means 2 0 as a reference and the 0 direction is determined by the sub positioning means 30. Since the deviation can be regulated, the machining hole 1 8 can be precisely machined into the workpiece 15.
- the enlargement / reduction gripper C 2 2 and the enlargement / reduction damper C 3 2 are enlarged / reduced, so that, for example, the main positioning hole 16 formed in the work 15 and the sub-positioning Even if the shape of the inner surface of the hole 17 is tapered, it can be dealt with by deforming the outer peripheral shape of the expansion / contraction damper C 2 2 and expansion / contraction gripper C 3 2.
- the secondary positioning hole 17 is not damaged. Therefore, the workpiece 15 can be pressed with a large force, and positioning can be reliably performed even when the weight of the workpiece 15 is large.
- main positioning means 2 0 and sub-positioning means 3 0 protruding on the reference surface 1 1 a, and formed on the track 15 Insert the main positioning unit 20 into the main positioning hole 16 and the sub positioning unit 30 into the sub positioning hole 17 formed in the workpiece 15 to determine the position of the work 15
- the main positioning means 20 is provided with an expansion / contraction dipper C 2 2 having a circular outer periphery which is inserted into the main positioning hole 16, and the sub positioning means 30 is subordinate to the main positioning means 20.
- the base upper block C 3 5 formed with at least two opposing surfaces with a sliding holding surface C 3 5 c parallel to the central straight line CL connecting the means 30 and the base upper block C 3 5 Movement
- Slide flange C 3 4 corresponding to holding surface C 3 5 c and parallel to center line CL 3 4 b is formed on top of slide flange C 3 4 and slide flange C 3 4 Expansion / reduction gripper C 3 2 having a circular outer periphery, and when positioning work 15, expansion / contraction gripper C 2 2 of main positioning means 20 is the main positioning hole 1 6
- the slide flange C 3 4 of the secondary positioning means 30 is guided by the sliding holding surface C 3 5 c and moves on the center straight line CL.
- the expansion / contraction gripper C 3 2 is inserted into the auxiliary positioning hole 1 7 by absorbing the pitch error with 7.
- the auxiliary positioning means 30 can move on the central straight line CL connected to the main positioning means 20, and without placing an excessive burden on the main positioning means 20, It is possible to absorb the pitch error of the pitch P between holes with the positioning hole 1 7.
- the slide mechanism is not provided inside the expansion / contraction gripper C 3 2 of the sub-positioning means 30, the internal structure becomes simple and it is possible to realize a small-diameter insertion part while maintaining rigidity. Become.
- the sub-positioning means 30 contacts the inner surface of the sub-positioning hole 17.
- Expansion / reduction gripper C 3 2 and taper surface C 3 1 with a tapered surface that contacts the expansion / reduction damper C 3 2, and expansion / contraction to sub-positioning hole 17 of workpiece 15 By moving the taper shaft C 3 1 or the expansion / contraction reduction dipper C 3 2 in the axial direction of the sub-positioning means 30 in the state where the daripper C 3 2 is inserted, the expansion / contraction gripper C Since 3 2 contacts and presses the inner surface of the auxiliary positioning hole 17, the auxiliary positioning means 30 can be added with the inner diameter gripping function of the auxiliary positioning hole 17.
- Positioning accuracy is improved by adding an inner diameter gripping function for each positioning hole to the main positioning means 20 and sub positioning means 30. It is possible.
- a main positioning means 20 and a sub-positioning means 30 protruding on the reference surface 11a, and is formed on the track 15
- Positioning device 1 for work 15 that determines the position of work 15 by inserting main positioning means 20 into main positioning hole 16 and sub-positioning means 3 0 into sub-positioning hole 17 formed in workpiece 15
- the main positioning means 20 includes an expansion / contraction dipper C 2 2 having a circular outer periphery, which is inserted into the main positioning hole 16, and the sub positioning means 30 is subordinate to the main positioning means 20
- Base upper block C 3 5 and base upper block C 3 5 formed with at least two opposing surfaces with sliding holding surface C 3 5 c parallel to center line CL connecting means 30
- the sliding flange C 3 4 is formed with a sliding surface C 3 4 b corresponding to the sliding holding surface C 3 5 c.
- the secondary positioning means 30 is in contact with the inner surface of the secondary positioning hole 17 Expansion / reduction dipper C 3 2 and taper shaft C 3 1 with a tapered surface whose outer peripheral surface is in contact with expansion / contraction dipper C 3 2, and expansion / contraction dipper in the sub positioning hole 17 of workpiece 15
- the expansion / contraction damper C 3 2 Since it contacts and presses the inner surface of the auxiliary positioning hole 17, it is possible to provide a positioning device 10 that has the same effect as the positioning method described in (4 1 2).
- the positioning device 10 of the fifth embodiment has substantially the same configuration as the positioning device 10 of the first embodiment. The following explains the different parts of the configuration.
- FIG. 14A shows a top view of the main positioning means 20 of the fifth embodiment.
- Fig. 14B shows a cross-sectional view of the main positioning means 20 corresponding to the arrow A-A in Fig. 1.
- the main positioning means 20 includes an insertion shaft D 21, a taper ring D 22, a base block D 24, a piston D 25, a sprocket sub-block D 27, and the like.
- Insert shaft D 2 1 has tip D 2 1 a and shaft D
- Tapered ring D 2 2 is a cylindrical part with a taper of C-shaped cross section attached to the lower part of tip end D 2 1 a of insertion shaft D 2 1. For this reason, the tapering D 22 can be expanded and contracted in the radial direction.
- the insertion shaft D 2 1 and taper ring D 2 2 correspond to the main positioning insertion portion.
- the base block D 24 has a taper projection D 24 4a and a block fitting part D 24b, which fits into the fitting recess D 27a formed in the spacer block D 27. Positioned together.
- the taper protrusion D2 4a is formed so that the outer periphery contacting the inner peripheral surface of the tapering D22 is tapered, and a through-hole through which the shaft portion D2 1b passes is provided at the center. ing.
- the taper projection D 2 4 a is provided with a pin D 2 3 for preventing rotation of the taper ring D 2 2.
- An O-ring is provided on the outer periphery of the block fitting part D 2 4 b for sealing purposes.
- a cylindrical sliding surface D 2 4 c is formed on the inner surface of the block fitting part D 2 4 b, and the piston D 2 5 slides inside. Viston D 2 5
- the outer periphery is provided with an O-ring for sliding and sealing purposes. ing.
- the base block D 2 4 has an oil supply passage D 2 4 d and an air supply passage D 2 4 e.
- the oil supply passage D 2 4 d is provided for lowering the piston D 2 5, and the air supply passage D 2 4 e is provided for purging the insertion shaft D 2 1.
- the piston D 2 5 is connected to the shaft part D 2 1 b of the insertion shaft D 2 1 at the top.
- One end of the pressure spring D 2 6 is in contact with the piston D 2 5, and the other end is in contact with the inner surface of the base block D 24.
- Spare sub-block D 2 7 is a component connected to base block D 2 4 and is used to adjust the height of main positioning means 20.
- Spacer block D 2 7 is formed with four mating parts D 2 7 a, 1st oil supply flow path D 2 7 b, 2nd oil supply flow path D 2 7 c, Air supply flow path D 2 7 d is formed.
- the first oil supply passage D 2 7 b is connected to the first oil supply passage 1 1 b, and the second oil supply passage D 2 7 c is connected to the second supply passage 1. 1 c is connected, and the air supply flow path D 2 7 d is connected to the air supply flow path 1 1 d.
- the second oil supply passage D 2 7 c is connected to the oil supply passage D 24 d, and the air supply passage D 27 d is connected to the air supply passage D 24 e.
- positioning means are appropriately used at the connection with the reference block 1 1.
- the main positioning means 20 having such a configuration is a reference block 1 1
- FIG. 15A shows a cross-sectional view of the sub-positioning means 30 of the fifth embodiment taken along the line JJ shown in FIG. 15B.
- FIG. 15B shows a cross-sectional view of the auxiliary positioning means 30 corresponding to the arrow B-B in FIG.
- Sub positioning means 30 consists of insertion shaft D 3 1, taper ring D 3 2, base block D 3 4, piston D 3 5, slide block D 3 7, outer block D 3 8, etc. .
- the insertion shaft D 3 1 and taper ring D 3 2 of the secondary positioning means 30 correspond to the secondary positioning insertion part.
- the slide block D 3 7 is formed with a fitting recess D 3 7 a and is formed in the base block D 3 4 in the same manner as the spare sub-block D 2 7 of the main positioning means 20.
- the block mating part D 3 4 b is mated.
- the slide block D 3 7 has a second rolling surface D 3 7 e formed so as to be parallel to the center line CL, and the second rolling surface D 3 7 e is formed on the second smooth surface. Equivalent to. Ball D 3 9 rolls in a groove formed by first rolling surface D 3 8 b formed in outer block D 3 8 corresponding to second rolling surface D 3 7 e.
- the slide block D 37 has an air supply passage D 37 d connected to the air supply passage D 34 e.
- the first oil supply passage D 3 7 b connected to the first oil supply passage 11 b formed in the reference block 11 1, and the second oil supply passage 11 c connected to the second supply passage 11 c are not shown. 2 Oil supply flow path D 3 7 c is formed.
- the outer block D 3 8 is formed with a holding groove D 3 8 a for sliding the slide block D 3 7. Then, the ball D 3 9 rolls on the first rolling surface D 3 8 b formed on the outer block D 3 8.
- the first rolling surface D 3 8 b corresponds to the first smooth surface.
- Outer block D 3 8 is fixed to reference block 1 1. Although not shown, it may be fixed using a positioning pin or the like.
- outer block D 3 8 also has a slide block D.
- a flow path for connecting the first oil supply flow path D 3 7 b, the second oil supply flow path D 3 7 c, and the air supply flow path D 3 7 d is formed.
- Pole D 3 9 serves as a guide when slide block D 3 7 slides against outer block D 3 8
- the diameter of the pole D 39 is slightly larger than the groove formed by the second rolling surface D 3 7 e and the first rolling surface D 3 8 b. It is preferable to apply pressure to increase accuracy.
- the sub-positioning means 30 having such a configuration supplies oil from the first oil supply passage 11 b or the second supply passage 11 c formed in the reference block 11 similarly to the main positioning means 20.
- the piston 25 rises and the tapering D 3 2 expands and contracts accordingly.
- By expanding and contracting the taper ring D 3 2 it becomes possible to eliminate the clearance with the auxiliary positioning hole 17 formed in the work 15.
- the secondary positioning means 30 is provided with the second rolling surface D 37 e and the first rolling surface D 38 b, an insertion serving as a secondary positioning determining insertion portion of the secondary positioning means 30 is provided.
- Shaft D 3 1 and taper ring D 3 2 can be translated in the direction of main positioning means 20.
- the positioning device 10 of the fifth embodiment configured as described above has the following operational effects.
- the effect of the fifth embodiment is the same as that of the first embodiment.
- the work 15 can be accurately centered around the main positioning means 20.
- Sub-positioning means 30 Slide block D 3 7 moves on center straight line CL with respect to outer block D 3 8 to absorb pitch error of pitch P between holes and shift in 0 direction. This is because it can be corrected.
- the main positioning means 20 and the secondary positioning means 30 use the same parts, and the sliding mechanism of the secondary positioning means 30 is the slide block D. Since it is realized by 3 7 and outer block D 3 8, positioning device 10 can be realized at low cost.
- main positioning means 2 0 and sub-positioning means 3 0 protruding on the reference surface 11 a, Insert the main positioning unit 20 into the main positioning hole 16 and the sub positioning unit 30 into the sub positioning hole 17 formed in the workpiece 15 to determine the position of the work 15
- the main positioning means 2 0 is provided with an insertion shaft D 2 1 and a taper ring D 2 2 which are inserted into the main positioning holes 16 and have a circular outer periphery.
- a first rolling surface D 3 8 b parallel to the central straight line CL connecting the positioning means 2 0 and the sub-positioning means 30 is formed with an outer block D 3 8 having at least two opposing faces and an outer pro Corresponding to the first rolling surface D 3 8 b of the shaft D 3 8, the second rolling surface D 3 7 e parallel to the central straight line CL is formed.
- Insert block D 3 1 and taper ring D 3 2 provided at the top of idle block D 3 7 and slide block D 3 7 and inserted into secondary positioning hole 17
- the insertion shaft D 21 and the taper ring D 22 of the main positioning means 20 are inserted into the main positioning hole 16 and
- the sliding block D 37 of positioning means 30 is guided by the first rolling surface D 3 8 b via the pole D 39 and moves on the center straight line CL.
- the insertion shaft D 3 1 and taper ring D 3 2 are inserted into the auxiliary positioning hole 1 7 by absorbing the pitch error with the positioning hole 1 7.
- the sub-positioning means 30 can move on the central straight line CL connected to the main positioning means 20, and the main positioning hole 16 of the work 15 can be connected to the main positioning means 20 without placing an excessive burden on the main positioning means 20. It is possible to absorb the pitch error of the pitch P between the holes with the sub-positioning hole 1 7.
- the internal structure is simple because there is no sliding mechanism inside the insertion shaft D 3 1 and taper ring D 3 2 of the sub-positioning means 30. Thus, it is possible to realize a small-diameter insertion portion while maintaining rigidity.
- the sub positioning means 30 contacts the inner surface of the sub positioning hole 17 Tapered ring D 3 2 and base block D 3 4 with a tapered surface whose outer peripheral surface is in contact with tapering D 3 2, and taper ring D 3 2 in sub positioning hole 1 7 of workpiece 15
- the taper ring D 3 2 is in contact with the inner surface of the sub-positioning hole 17 and pressed by translating the taper ring D 3 2 in the axial direction of the sub-positioning means 30 with the screw inserted. Therefore, the subpositioning means 30 can be added with the function of gripping the inner diameter of the subpositioning hole 17.
- the slide part having the second rolling surface D 3 7 e is formed on the slide block D 3 7 disposed in the outer block D 3 8
- the base block D 3 4 is held in the slide block D 3 7 because the base block D 3 4 with the input shaft D 3 1 and the tapered ring D 3 2 is held.
- the slide part is provided below the sub-positioning insertion part, it is possible to contribute to the miniaturization of the sub-positioning insertion part.
- main positioning means 20 and subpositioning means 30 protruding on the reference surface 11a, Insert the main positioning means 2 0 into the main positioning hole 1 6 Insert the secondary positioning means 30 into the secondary positioning hole 1 7 formed in the workpiece 1 5 and determine the position of the work 15 5
- the main positioning means 2 0 is the main positioning hole 1 6 has a circular insertion shaft D 2 1 and a taper ring D 2 2 that are inserted into the outer periphery
- the secondary positioning means 30 includes a main positioning means 20 and a secondary positioning means 30.
- the first rolling surface D 3 8b which has at least two opposing rolling surfaces D 3 8 b parallel to the central straight line CL, and the first rotation of the outer block D 3 8 A slide block D 3 7 corresponding to the moving surface D 3 8 b and forming a second rolling surface D 3 7 e parallel to the central straight line CL, and provided on the top of the slide block D 3 7 Since the outer periphery has a circular insertion shaft D 3 1 and a tape ring D 3 2 inserted into the sub-positioning hole 1 7, It is possible to provide a positioning device 10 having the same effect as the positioning method described in (5-1).
- the auxiliary positioning means 30 contacts the inner surface of the auxiliary positioning hole 17 Tapered ring D 3 2 and base block D 3 4 with a tapered surface whose outer peripheral surface is in contact with taper D 3 2, and taper ring D 3 2 is inserted into sub positioning hole 17 of workpiece 15 In the inserted state, the taper ring D 3 2 is in contact with and pressed against the inner surface of the sub positioning hole 17 by translating the tape ring D 3 2 in the axial direction of the sub positioning means 30. It is possible to provide a positioning device 10 having the same effect as the positioning method described in (5-2).
- the positioning device 10 according to the sixth embodiment has the same configuration except that the positioning device 10 according to the fifth embodiment and the sub-positioning means 30 are different.
- the configuration of the auxiliary positioning means 30 will be described.
- FIG. 16A shows a cross-sectional view of the sub-positioning means 30 of the sixth embodiment taken along line K-L shown in FIG. 16B.
- FIG. 16B shows a sectional view of the sub-positioning means 30 corresponding to the arrow B-B in FIG.
- Sub-positioning means 30 includes insertion shaft E 3 1, taper ring E 3 2, base block E 3 4, piston E 3 5, slide block E 3 7, outer upper block E 3 8 and Outer lower block E 40, etc.
- the sub-positioning means 30 of the sixth embodiment, the main positioning means 20 of the fifth embodiment, and the sub-positioning means 30 have some parts in common.
- Feed shaft D 2 1 and feed shaft E 3 1, taper ring D 2 2 and taper ring E 3 2, pin D 2 3 and Bonore E 3 3, base block D 2 4 and base block E 3 4, Piston D 2 5 and Piston E 3 5, Pressurized panel D 2 6 and Pressed panel E 3 6 are parts that perform the same function, so the explanation is omitted.
- the insertion shaft E 3 1 and taper ring E 3 2 of the secondary positioning means 30 correspond to the secondary positioning insertion part.
- the slide block E 3 7 is formed with a fitting recess E 3 7 a, and, similar to the spare block D 2 7 of the main positioning means 20 of the fifth embodiment, the base block E 3 Block fitting part E 3 4 b formed in 4 is fitted.
- the slide block E 37 has a first sliding surface facing the central straight line CL so as to be parallel to the central straight line CL, and corresponds to a second smooth surface.
- the cylinder E 3 9 corresponds to the ball D 3 3 of the fifth embodiment, and the surface of the smoothly formed cylinder E 3 9 is the slide block E 3 7, the outer upper block E 3 8, the outer lower block.
- the sliding blocks formed in the block E 40 and the adjustment block E 42 are slid so that the slide block E 37 smoothly translates. Each sliding surface is parallel to the center straight line C L.
- Cylinder E 3 9 can change the pressure applied to each sliding surface by adjusting screw E 4 1 that presses one surface of adjustment block E 4 2 and adjustment block E 4 2 It is.
- first oil supply passage E 3 7 b the second oil supply passage E 3 7 c (not shown), and the air supply passage E 3 7 d are formed in the slide block E 3 7. 5 Performs the same function as the part of the same name in the example.
- the sub-positioning means 30 having such a configuration is the same as the sub-positioning means 30 of the fifth embodiment, and the first oil supply flow formed in the reference block 11 is the same as the main positioning means 20.
- the piston 25 moves up and down, and the tapering E 3 2 expands and contracts accordingly.
- the taper ring E 3 2 By expanding and contracting the taper ring E 3 2, it becomes possible to eliminate the clearance with the auxiliary positioning hole 1 ⁇ formed in the work 15.
- the secondary positioning means 30 is provided with a sliding block E37, an upper upper block E38, an adjustment block E42, and sliding surfaces.
- the insertion shaft E 3 1 and the taper ring E 3 2 which are sub-positioning insertion portions of the positioning means 30 can be translated in the direction of the main positioning means 20.
- the positioning device 10 of the sixth embodiment configured as described above is as follows. The following effects are exhibited.
- the effect of the sixth embodiment is the same as that of the first embodiment.
- the work 15 can be accurately positioned around the main positioning means 2 0. Is done.
- the hole pitch P This is because it is possible to absorb the pitch error and correct the deviation in the 0 direction.
- the positioning device 10 of the sixth embodiment is similar to the fifth embodiment in that the main positioning means 20 and the sub-position * determining means 30 use the same parts, and the sub-positioning means 30 slides. Since the mechanism is realized by the slide block E 37 and the outer upper block E 38 and the outer lower block E 40, the positioning device 10 can be realized at low cost.
- the difference between the fifth and sixth embodiments is the force that uses the ball D 3 3 for the slide mechanism and the cylinder E 3 9.
- the pressurization of the cylinder E 39 is realized by the adjustment block E 4 2 and the adjustment screw E 41 and can be easily adjusted.
- the fifth embodiment it is necessary to change the size of the ball D 3 3, and it is necessary to control the pressurization at the time of manufacture.
- the pressure can be adjusted with the adjustment block E 4 2 and the adjustment screw E 4 1, the user can adjust the pressure arbitrarily, not at the time of shipment from the factory.
- the main positioning means 20 is provided with a insertion shaft D 2 1 and a taper ring D 2 2 which are inserted into the main positioning hole 16 and have a circular outer periphery.
- the positioning means 30 is composed of an outer upper block E 3 8 in which at least two first smooth surfaces parallel to the central straight line CL connecting the main positioning means 20 and the sub-positioning means 30 are opposed to each other.
- outer lower block E 40 and adjustment block E 42, outer upper block E 38, outer lower block E 40 and adjustment block E 42 1 Slide block that corresponds to a smooth surface and forms a second smooth surface parallel to the center straight line.
- E 3 7 and slide block E 3 7 are provided on the top of the slide block E 3 7 and inserted into the auxiliary positioning hole 17 with a circular insertion shaft E 3 1 and taper ring E 3 2.
- the insertion shaft D 2 1 and taper ring D 2 2 of the main positioning means 20 are inserted into the main positioning hole 16 and the slide block E of the sub positioning means 30 3 7 is guided to the first smooth surface via the cylinder E 39 and moves on the center straight line CL to absorb the pitch error between the main positioning hole 1 6 and the sub positioning hole 1 G 3 and taper ring E 3 2 are inserted into the auxiliary positioning hole 17.
- the sub positioning means 30 can move on the central straight line CL connected to the main positioning means 20, and the main positioning hole 16 and the sub positioning means 16 can be connected to the sub positioning means 20 without placing an excessive burden on the main positioning means 20. It is possible to absorb the pitch error of the pitch P between holes with the positioning hole 1 7.
- the sliding mechanism is not provided inside the insertion shaft E 3 1 and taper ring E 3 2 of the sub-positioning means 30, the internal structure is simplified and a small-diameter insertion portion is realized while maintaining rigidity. Possible and Become.
- the auxiliary positioning means 30 contacts the inner surface of the auxiliary positioning hole 17.
- Taper ring E 3 2 and base block E 3 4 with a tapered surface whose outer peripheral surface is in contact with taper E 3 2, and taper ring E 3 2 in sub positioning hole 1 7 of workpiece 15 When taper ring E 3 2 is translated in the axial direction of sub-positioning means 30 with taper inserted, taper ring E 3 2 contacts and presses the inner surface of sub-positioning hole 17.
- the sub-positioning means 30 can be added with the function of gripping the inner diameter of the sub-positioning hole 17.
- the slide part is provided below the auxiliary positioning insertion part, it is possible to contribute to the miniaturization of the auxiliary positioning insertion part.
- main positioning means 2 0 and sub-positioning means 3 0 protruding on the reference surface 1 1 a, and formed in the track 15
- Main positioning means 2 0 in main positioning hole 16 and sub positioning means 3 0 in sub positioning hole 1 7 formed in cake 15 Inserting and determining the position of work 15
- the main positioning means 2 0 is inserted into the main positioning hole 16, and the insertion shaft E 2 1
- the secondary positioning means 30 has a first smooth surface parallel to the central straight line CL that connects the main positioning means 20 and the secondary positioning means 30.
- the sub-positioning means 30 contacts the inner surface of the sub-positioning hole 17 A taper E 3 2 and a base block E 3 4 with a tapered surface whose outer peripheral surface is in contact with the taper E 3 2, and the taper E 3 2 is inserted into the auxiliary positioning hole 17 of the work 15
- the taper ring E 3 2 is moved in parallel with the auxiliary positioning means 30 in the axial direction so that the taper ring E 3 2 contacts and presses the inner surface of the sub positioning hole 17. It is possible to provide a positioning device 10 having the same effect as the positioning method described in (6-2).
- the positioning device 10 of the seventh embodiment has the same configuration except that the positioning device 10 of the fifth embodiment and the auxiliary positioning means 30 are different.
- the configuration of the sub positioning means 30 will be described below.
- FIG. 17A shows a cross section taken along the line M-M in FIG. 17B of the auxiliary positioning means 30 of the seventh embodiment.
- FIG. 17B shows a cross-sectional view of the auxiliary positioning means 30 corresponding to the arrow B-B in FIG.
- the sub-positioning means 30 includes a insertion block F 3 1, an outer block F 3 2 and the like.
- the outer block F 3 2 has the same function as the outer block D 3 8 of the fifth embodiment, and a description thereof will be omitted.
- the insertion block F 3 1 is inserted into the insertion part F 3 1 a to be inserted into the auxiliary positioning hole 17 of the work 15 and the holding groove F 3 2 a formed in the outer block F 3 2.
- the held part F 3 1 c is inserted.
- the insertion block F 3 1 is formed with a second rolling surface F 3 1 b and holds the ball F 3 3 with the corresponding first rolling surface F 3 2 b.
- the insertion block F 3 1 has an air supply flow path F 3 1 d formed therein, and communicates with the air supply flow path 11 1 d formed in the reference block 11 1.
- the air supply flow path F 3 1 d also communicates with the tip of the insertion portion F 3 1 a so that air can be blown into the main positioning hole 16 and the auxiliary positioning hole 17.
- the holding part F 3 1 c of the insertion block F 3 1 is provided with a sealing material on its outer peripheral surface for the purpose of sliding and sealing.
- Block F 3 1 can be translated along center line CL. This is because the outer block F 3 2 is formed parallel to the center straight line CL, and the insertion block F 3 1 is supported by the second rolling surface F 3 1 b via the ball F 3 3. is there.
- the positioning device 10 of the seventh embodiment configured as described above has the following operational effects.
- the effect of the seventh embodiment is that, compared with the first embodiment, the expansion / contraction function of the sub-positioning means 30 is omitted, so that the cost can be reduced accordingly. Then, by using the positioning device 10 of the seventh embodiment, the workpiece 15 is positioned with high accuracy around the main positioning means 20. By moving the insertion block F 3 1 of the sub-positioning means 30 on the center straight line CL with respect to the outer block F 3 2, the pitch error of the hole pitch P is absorbed and the deviation in the 0 direction is detected. It is possible to correct this.
- main positioning means 20 and sub-positioning means 30 protruding on the reference surface 11a, and formed on the work 15 Insert the main positioning unit 20 into the main positioning hole 16 and the sub positioning unit 30 into the sub positioning hole 17 formed in the workpiece 15 to determine the position of the work 15
- the main positioning means 2 0 is provided with a circular insertion part F 3 1 a inserted into the main positioning hole 16, and the sub positioning means 3 0 is sub-positioned with the main positioning means 2 0.
- the outer block F 3 2 formed with at least two opposite faces of the first rolling surface F 3 2 b parallel to the central straight line CL connecting the means 30 and the first of the outer block F 3 2 Insertion block F 3 1 corresponding to rolling surface F 3 2 b and forming second rolling surface F 3 1 b parallel to the center straight line, and insertion Lock disposed above the click F 3 1, is inserted into the auxiliary positioning hole 1 7, the outer periphery is circular ⁇ portion F 3 1 a, and when positioning work 15, insert shaft D 2 1 and taper ring D 2 2 force S of main positioning means 2 0 into main positioning hole 1 6 At the same time, the insertion block F 3 1 of the sub-positioning means 30 is guided by the first rolling surface F 3 2 b via the ball F 3 3 and moves on the central straight line CL. The insertion part F 3 1 a is inserted into the sub positioning hole 1 7 by absorbing the pitch error between the positioning hole 1 6 and the sub positioning hole 1 7.
- the sub positioning means 30 can move on the center straight line CL connected to the main positioning means 20 and the main positioning hole 16 of the work 15 can be moved to the main positioning means 20 without placing an excessive burden on the main positioning means 20. It is possible to absorb the pitch error of the pitch P between the holes with the sub-positioning hole 1 7.
- the sliding mechanism is not provided inside the insertion portion F 3 1 a of the sub-positioning means 30, the internal structure is simplified, and a small diameter insertion portion can be realized while maintaining rigidity.
- main positioning means 20 and subpositioning means 30 protruding on the reference surface 11a, Insert the main positioning means 2 0 into the main positioning hole 16 and the sub positioning means 30 into the sub positioning hole 17 formed in the workpiece 15 to determine the position of the work 15
- the main positioning means 20 has a circular insertion portion F 3 1 a inserted into the main positioning hole 16, and has a circular outer periphery F 3 1 a.
- the positioning device 10 of the eighth embodiment is different in the internal structure of the positioning device 10 and the auxiliary positioning means 30 of the first embodiment, but the other configurations are the same.
- FIG. 18A shows a cross-sectional view of the sub-positioning means 30 of the eighth embodiment taken along the line NN shown in FIG. 18B.
- FIG. 18B shows a cross-sectional view of the auxiliary positioning means 30 corresponding to the BB arrow shown in FIG. Figure 18C shows an enlarged view of the X part of Figure 18A.
- the auxiliary positioning means 30 includes an insertion shaft G 3 1, a taper ring G 3 2, a base block G 3 4, a piston G 3 5, and the like.
- the insertion shaft G 3 1 is composed of a tip portion G 3 1 a and a shaft portion G 3 1 b, and a shaft portion G 3 1 b is formed coaxially with the tip portion G 3 1 a of the trapezoidal cross section. ing.
- the taper ring G 3 2 is a circular part with a taper having a substantially C-shaped cross section that is attached to the lower part of the tip part G 3 1 a of the insertion shaft G 3 1. For this reason, the tapering G 32 can be expanded and contracted in the radial direction.
- the tapering G 3 2 has two sliding surfaces G 3 2 a.
- the sliding surface G 3 2 a is a surface parallel to the central straight line CL, and is formed at a position facing each other, and at a 90 ° angle offset from the cut of the tapering G 3 2. Yes.
- the base block G 3 4 has a taper projection G 3 4 a and a base mating part G 3 4 b.
- the base mating part G 3 4 b has a fitting hole formed in the reference block 1 1.
- the fitting is positioned.
- Two holding smooth surfaces G 3 4 e that are parallel to the center straight line CL are formed on both surfaces of the base fitting portion G 3 4 b.
- This holding smooth surface G 3 4 e has a tapered projection G 3 4 a
- the two holding smooth surfaces G 3 4 e are opposed to each other.
- the holding smooth surface G 3 4 e is formed in the base block G 3 4 in a tapered shape that extends downward.
- the holding smooth surface G 3 4 e abuts on the sliding surface G 3 2 a.
- the taper projection G 3 4 a is provided with a pin G 3 3 parallel to the central straight line C L and functions as a detent for the taper ring G 3 2.
- a cylindrical sliding surface G 3 4 c is formed on the inner surface of the base fitting part G 3 4 b, and the piston G 3 5 slides.
- Insert shaft G 3 1 is screwed onto the upper end of piston G 3 5 and oil is supplied to oil supply passage G 3 4 d formed in base block G 3 4. The piston G 3 5 goes down.
- the piston G 3 5 is formed in a columnar shape, and its outer peripheral surface is slidable with a cylindrical sliding surface G 3 4 c and is provided with an O-ring for the purpose of sealing. Yes.
- the sub-positioning means 30 configured as described above is supplied with oil from the second supply flow path 11 c, and is similar to the sub-positioning means 30 of the first embodiment, and the oil supply flow path G 3 4 d
- piston G 3 5 moves downward from the state shown in Fig. 18 B.
- the insertion shaft G 3 1 screwed into the screw G 3 5 is lowered as the piston G '3 5 is lowered, and as a result, the taper ring provided in the insertion shaft G 3 1 is provided.
- G 3 2 is expanded along the taper of the holding smooth surface G 3 4 e of the base block G 3 4.
- the sub-positioning means 30 has a sliding surface G 3 2 a and a tapered protrusion. Since the starting G 3 4 a is provided, the insertion shaft G 3 1 and the taper ring G 3 2 which are the insertion positions for the auxiliary positioning means 30 are the pitches between the holes of the holes 15 It is possible to translate in the direction of the main positioning means 20 according to P.
- the positioning device 10 of the eighth embodiment configured as described above has the following operational effects.
- the effect of the eighth embodiment is the same as that of the first embodiment.
- the work 15 can be positioned accurately with the main positioning means 20 as the center.
- the sub-positioning means 30 can adjust the deviation in the 0 direction by adjusting along the center straight line C L.
- the machining hole 18 of the workpiece 15 is designed with reference to the main positioning hole 16, the main positioning means 20 of the positioning device 10 is used as a reference, and the sub-positioning means 30 is used in six directions. Since the displacement can be regulated, the machining hole 1 8 can be machined with high accuracy in the work 15.
- the sliding surface G 3 2 a is provided on the tapering G 3 2 and the holding smooth surface G 3 4 e is provided on the base block G 3 4.
- 3 2 a and the holding smooth surface G 3 4 e slide to translate in the direction of the main positioning means 20 on the center straight line CL.
- the taper G 3 2 is symmetrical with respect to the sliding direction, so uniform deformation can be realized, and positioning accuracy is good.
- the main positioning means 2 0 and the secondary positioning means 3 0 provided on the reference surface 11a are connected to the main positioning formed on the work 15
- the main positioning means 20 is inserted into the main positioning hole 16, and the outer periphery is circular
- the sub-positioning means 30 is composed of two holding smooth surfaces G 3 4 e facing each other and parallel to the central straight line CL connecting the main positioning means 20 and the sub-positioning means 30.
- the formed base block G 3 4 and the sliding surface G 3 2 a abutting against the holding smooth surface G 3 4 e of the base block G 3 4 are formed on the inner surface and inserted into the auxiliary positioning hole 17.
- the insertion shaft G 3 1 and taper G 3 2 have a circular outer periphery.
- the main positioning insertion part of the main positioning means 20 is inserted into the main positioning hole 16 and the insertion shaft G 3 1 and taper ring G 3 2 force S of the sub positioning means 30 It is guided by the holding smooth surface G 3 4 e and moves on the center straight line CL, and the pitch error between the main positioning hole 16 and the secondary positioning hole 17 is absorbed and inserted into the secondary positioning hole 17.
- the secondary positioning means 30 can move on the central straight line CL connected to the main positioning means 2 ⁇ and the primary positioning hole 16 and the secondary positioning hole 16 of the work 15 can be It is possible to absorb the pitch error of the pitch P between holes with the positioning hole 1 7. Also, since there is no slide mechanism inside the insertion shaft G 3 1 and taper ring G 3 2 of the sub-positioning means 30, the internal structure is simplified and a small diameter insertion part is realized while maintaining rigidity. It becomes possible.
- the main positioning means 2 0 and the sub-positioning means 30 provided on the reference surface 1 1 a are connected to the main formed on the work 15.
- the main positioning means 2 0 is inserted into the main positioning hole 16 in the positioning device 1 0 of the work 15 which is inserted into the positioning hole 1 6 and the sub positioning hole 17 and determines the position of the work 15
- the main positioning insertion part 30 having a circular outer periphery is provided, and the sub-positioning means 30 has a holding smooth surface G 3 4 e parallel to the central straight line CL connecting the main positioning means 20 and the sub-positioning means 30.
- the base block G 3 4 formed on the two surfaces and the sliding surface G 3 2 a that contacts the holding smooth surface G 3 4 e of the base block G 3 4 are formed on the inner surface.
- the insertion shaft G 3 1 and taper ring G 3 2 that are inserted into 7 and have a circular outer periphery are provided.
- the materials shown in the first to eighth embodiments are not particularly limited, and may be changed as necessary. Also, these shapes can be changed as appropriate without departing from the scope of the invention. Industrial applicability
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Abstract
Description
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Priority Applications (4)
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KR1020117013729A KR101075305B1 (ko) | 2007-06-19 | 2008-06-16 | 작업물의 위치 결정 방법, 및 위치 결정 장치 |
CN2008800013659A CN101626866B (zh) | 2007-06-19 | 2008-06-16 | 工件的定位方法及定位装置 |
EP08790559A EP2093015B1 (en) | 2007-06-19 | 2008-06-16 | Work positioning method and positioning device |
US12/513,679 US8177210B2 (en) | 2007-06-19 | 2008-06-16 | Work positioning method, and positioning device |
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JP2007-160945 | 2007-06-19 | ||
JP2007160945A JP4799487B2 (ja) | 2007-06-19 | 2007-06-19 | ワークの位置決め方法、及び位置決め装置 |
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PCT/JP2008/061372 WO2008156181A1 (ja) | 2007-06-19 | 2008-06-16 | ワークの位置決め方法、及び位置決め装置 |
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US (1) | US8177210B2 (ja) |
EP (2) | EP2452777B1 (ja) |
JP (1) | JP4799487B2 (ja) |
KR (2) | KR101076108B1 (ja) |
CN (1) | CN101626866B (ja) |
WO (1) | WO2008156181A1 (ja) |
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- 2008-06-16 KR KR1020097010589A patent/KR101076108B1/ko active IP Right Grant
- 2008-06-16 KR KR1020117013729A patent/KR101075305B1/ko active IP Right Grant
- 2008-06-16 WO PCT/JP2008/061372 patent/WO2008156181A1/ja active Application Filing
- 2008-06-16 CN CN2008800013659A patent/CN101626866B/zh not_active Expired - Fee Related
- 2008-06-16 US US12/513,679 patent/US8177210B2/en not_active Expired - Fee Related
- 2008-06-16 EP EP12154088A patent/EP2452777B1/en not_active Not-in-force
- 2008-06-16 EP EP08790559A patent/EP2093015B1/en not_active Not-in-force
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112576589A (zh) * | 2020-12-07 | 2021-03-30 | 东风(武汉)实业有限公司 | 一种自适应定位销结构 |
CN114043278A (zh) * | 2021-11-29 | 2022-02-15 | 上海中船三井造船柴油机有限公司 | 一种连杆斜油孔的加工用辅助装置和加工方法 |
CN114043278B (zh) * | 2021-11-29 | 2023-08-11 | 上海中船三井造船柴油机有限公司 | 一种连杆斜油孔的加工用辅助装置和加工方法 |
Also Published As
Publication number | Publication date |
---|---|
EP2452777A1 (en) | 2012-05-16 |
KR20090080999A (ko) | 2009-07-27 |
CN101626866B (zh) | 2011-01-26 |
KR101076108B1 (ko) | 2011-10-21 |
EP2093015A4 (en) | 2011-03-23 |
US8177210B2 (en) | 2012-05-15 |
EP2093015B1 (en) | 2012-05-30 |
EP2452777B1 (en) | 2012-12-12 |
CN101626866A (zh) | 2010-01-13 |
KR101075305B1 (ko) | 2011-10-19 |
KR20110081358A (ko) | 2011-07-13 |
JP2009000750A (ja) | 2009-01-08 |
US20090267281A1 (en) | 2009-10-29 |
EP2093015A1 (en) | 2009-08-26 |
JP4799487B2 (ja) | 2011-10-26 |
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