JPH068060A - Two member positioning method and device therefor - Google Patents

Abstract

PURPOSE:To perform the efficient and accurate positioning of a first member and a second member approachable/separable in the mutually opposed state by determining the relative positions within X-Y planes orthogonal to the approaching/separating direction of the first and second members. CONSTITUTION:A first step for making the axes of a first measuring shaft 45 and a first measuring hole 47 coincide with each other, a second step for making the axes of a second measuring shaft 46 and a second measuring hole 48 coincide with each other, and a third step for confirming whether the first and second measuring shafts 45, 46 coincide axially inside the first and second measuring holes 47, 48 are put in successive progress in association with the stepwise approach of a first member and a second member 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a two-member positioning method and device for positioning the releasable first and second members with their relative positions fixed in an XY plane orthogonal to the approaching / separating directions.

[0002]

2. Description of the Related Art Conventionally, for example, in a case where a lower die is provided with a guide post and an upper die is provided with a guide bush into which a guide post is slidably fitted, when assembling the lower die and the upper die with each other. The upper die is suspended by a crane or the like, and the position of the upper die in the horizontal plane is visually adjusted while gradually lowering the upper die so that the guide posts are fitted to the guide bushes.

[0003]

As described above, the one in which one member is finely adjusted by visual observation as described above takes a lot of time for positioning and is not efficient.

Therefore, an object of the present invention is to provide a two-member positioning method and device which can efficiently and accurately determine the positioning of the two members.

[0005]

In order to achieve the above-mentioned object, according to the method of the present invention, the proximity of the first and second members
The base ends of the first and second measurement shafts extending along the separating direction are fixed to the first member, and the first and second measurement holes through which the tip ends of the first and second measurement shafts can be individually inserted are provided. It is provided on two members, and only one of the first and second members is kept in a state in which the first and second members are kept at the first distance and the contact between the second measurement shaft and the inner surface of the second measurement hole is avoided. XY
The first step and the second step in which the first measurement axis and the first measurement hole are aligned with each other by moving the first measurement axis and the first measurement hole in the same direction.
Only one of the first and second members is moved in the XY directions while keeping the second interval shorter than the first interval between the members and avoiding contact between the first measurement shaft and the inner surface of the first measurement hole. The second step of aligning the axes of the second measurement axis and the second measurement hole with each other, and maintaining the third interval shorter than the second interval between the first and second members and the first and second The third step of confirming whether or not the measuring axes are aligned with each other in the first and second measuring holes is sequentially performed.

In the device of the present invention, the base ends of the first and second measuring shafts extending along the approaching / separating directions of the first and second members are fixed to the first member, and the first and second measuring shafts are fixed. The second member is provided with first and second measurement holes through which the tip portions can be individually inserted, and the tip portion of the first measurement shaft has a shape that enables relative movement in the XY directions within the first measurement hole. And a first confirming portion whose shape is smaller than the first measuring hole by an allowable tolerance are provided in order from the tip side, and the tip portion of the second measuring shaft is provided. Includes a second measuring portion whose shape is defined to allow relative movement in the XY directions within the second measuring hole, and a second confirming portion whose shape is smaller than the second measuring hole by an allowable tolerance. And are provided at intervals from the tip side to correspond to the second measuring section of the first measuring axis. Is formed in a shape capable of avoiding contact with the inner surface of the first measurement hole regardless of relative movement in the XY directions in the second measurement hole of the second measurement section, and is formed in the first measurement section of the second measurement axis. The corresponding portion is formed in a shape capable of avoiding contact with the inner surface of the second measurement hole regardless of relative movement in the XY directions in the first measurement hole of the first measurement portion, and the first and second confirmation portions are mutually Are provided on the first and second measurement shafts, respectively.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 to 11 show one embodiment of the present invention. FIG. 1 is a vertical side view of an electric discharge machine, which is a sectional view taken along line 1-1 of FIGS. 2 and 3. 2 is Figure 1
2-2 line sectional view, FIG. 3 is a 3-3 line sectional view of FIG. 1, FIG.
2 is an enlarged sectional view taken along line 4-4 of FIG. 2, FIG. 5 is an enlarged sectional view taken along line 5-5 of FIG. 2, FIG. 6 is an enlarged sectional view taken along line 6-6 of FIG. 3, and FIG. 7 is taken along line 7-7 of FIG. FIG. 8 is an enlarged exploded cross-sectional view taken along line 8-8 in FIG. 8 showing a state in which the first and second measurement shafts are inserted through the first and second measurement holes in the third step. Sectional view, FIG. 9 is a sectional view corresponding to FIG. 8 in the first step, FIG. 10 is a transverse sectional view showing the relative positional relationship between the first measuring axis and the first measuring hole in the first step, and FIG. Two
FIG. 9 is a sectional view corresponding to FIG. 8 in steps.

First, referring to FIG. 1, FIG. 2 and FIG.
The electric discharge machine uses a pair of mold materials W ₁, W₂To them
Discharge electrode E corresponding to₁, E₂The engraving by
It is for obtaining a pair of molds that pair with each other.
Mold material W₁, W₂Is the oil filled up to the oil level L.
It is mounted on a base 11 fixed to the bottom of the electro-machining oil tank 10.
Both are fixed and both discharge electrodes E₁, E₂Is on the base 11
Both mold materials W on the ram 12 that can be raised and lowered by one side₁, W₂of
Each is fixed so as to face the upper surface.

The mold materials W ₁ and W ₂ are detachably attached to the upper surface of the lower substrate 13 which is a first member detachably attached to the base 11 by a clamp means (not shown), and is also discharged. The electrodes E ₁ and E ₂ are detachably attached to the lower surface of the upper substrate 14 which is a second member detachably attached to the ram 12 by a clamp means (not shown).

The lower substrate 13 is formed in the shape of a rectangular flat plate, and both mold materials W ₁ and W _{2 in the} form of a block having a rectangular cross section are arranged in parallel on the lower substrate 13. Thus, the lower inner side surfaces of the two mold materials W ₁ and W ₂ facing each other are provided with a pair of guide members 15 and 15 fixed to a substantially central portion in the width direction (vertical direction in FIG. 2) on the lower substrate 13. Abutted against. Two pairs of supporting members 16, 16 ... Are fixed to each end of the lower substrate 13 along the width direction so that each supporting member 1 can move back and forth along the width direction.
The tips of the clamp screws 17, 17 screwed with 6, 16 are brought into contact with the lower parts of the outer side surfaces of the mold materials W ₁ , W ₂ . Therefore, by tightening the clamp screws 17, 17, ..., Both mold materials W along the width direction of the lower substrate 13
The positions of ₁ and W ₂ are determined.

Referring also to FIG. 4, a locking groove 18 is provided at one end along the longitudinal direction of the die material W ₁ over the entire width thereof. On the other hand, on the lower substrate 13, a guide member 19 that comes into contact with the lower part of the one end of the die material W ₁ is provided with a pair of screw members 21, 21 together with a clamp member 20 extending between the guide member 19 and the lower surface of the locking groove 18. It is concluded by. As a result, one end of the die material W ₁ along the longitudinal direction is positioned and fixed on the lower substrate 13.

Referring also to FIG. 5, a locking groove 22 is provided at the other end of the die material W ₁ along the longitudinal direction over the entire width thereof. A substantially L-shaped locking member 23 is engaged with the lower edge of the locking groove 22, and the support member 24 and the locking member 23 fixed to the lower substrate 13 corresponding to the locking member 23.
The wedge member 25 is inserted between and. That is, the locking member 2
The outer surface of 3 is provided with an inclined surface 23a that is inclined downward toward the outside, and a vertical surface 24a is formed on the locking member 23 side of the support member 24. Also wedge member 2
5 has surfaces 25a, 25b corresponding to the inclined surface 23a and the vertical surface 24a on both sides, and a screw member 26 inserted into the wedge member 25 inserted between the locking member 23 and the support member 24. The other end along the longitudinal direction of the die material W ₁ is positioned and fixed on the lower substrate 13 by screwing and fastening the lower substrate 13 on the lower substrate 13.

Both ends along the longitudinal direction of the mold material W ₂ are positioned and fixed on the lower substrate 13 by a structure similar to the positioning and fixing structure of the mold material W ₁ .

The upper substrate 14 includes a lower plate 14a and the lower plate 14a.
The upper plate 14b located above a is connected via a connecting plate 14c, and the upper plate 14b is detachably clamped to a mounting plate 12a provided at the lower end of the ram 12, The discharge electrodes E ₁ and E ₂ are positioned and fixed on the lower surface of the plate 14a.

Referring also to FIG. 6, on the lower surface of the lower plate 14a of the upper substrate 14, both discharge electrodes E ₁ and E ₂ correspond to both mold materials W ₁ and W ₂ on the lower substrate 13. It is arranged in parallel. Thus, on the lower surface of the lower plate 14a between the discharge electrodes E ₁ and E ₂ ,
A pair of guide members 30, 30 corresponding to both ends along the longitudinal direction of the discharge electrodes E ₁ , E ₂ are positioned pins 31, 31;
Positioned by 1.

Both guide members 30, 30 and the discharge electrode E
_The upper plate 1 is provided with screw members 32, 32 at the facing portion of the inner surface of 1.
The engaging members 33, 33 fastened to 4a are engaged with each other. The engaging member 33 is provided with a flange portion 33b extending outward in the radial direction at the upper end of the cylindrical portion 33a,
The screw member 32 inserted into the engaging member 33 is the upper plate 14a.
Is screwed onto. On the other hand, the opposite ends of the discharge electrodes E ₁ of the guide member 30, 30, engaging recesses 34 and 34 provided corresponding to substantially half of the engaging member 33, the discharge electrodes E ₁
Engaging recesses 35, 35 are provided on the inner side surface of the engaging members 33, 33 corresponding to the remaining approximately half circumferences of the engaging members 33, 33, and the engaging members 33, 33 are engaged with the engaging recesses 34, 34; By tightening the screw members 32, 32 so as to engage with each other, the inner portion of the discharge electrode E ₁ is positioned and fixed to the upper plate 14a.

[0018] The outer end lower portion of the discharge electrode E ₁ (in FIG. 6 top), a pair of engaging edged away 36, 36 having an inclined surface 36a which is inclined downward toward the inward longitudinal direction of the discharge electrodes E ₁ It is provided at intervals. On the other hand, support members 37, 37 are fixed to the lower plate 14a at portions corresponding to the engagement notches 36, 36.
Wedge members 38, 38 engaging with 36 are inserted between the discharge electrode E ₁ and the support members 37, 37. This wedge member 38
Are surfaces 38a, 3 corresponding to the vertical surface 37a provided on the discharge electrode E ₁ side of the support member 37 and the inclined surface 36a.
8b is provided on both sides, and screw members 39, 39 inserted into both wedge members 38, 38 are screwed into the lower plate 14a and tightened, so that the outer end of the discharge electrode E ₁ is made lower plate 1.
It will be positioned and fixed to 4a.

Both ends of the discharge electrode E ₂ are connected to the above-mentioned discharge electrode E 2.
_The structure is similar to the positioning and fixing structure of ₁ , and is positioned and fixed to the lower plate 14a of the upper substrate 14.

Between the lower substrate 13 and the upper substrate 14, the lower substrate 13 having the mold materials W ₁ and W ₂ attached thereto and the upper substrate 1 having the discharge electrodes E ₁ and E ₂ attached thereto
A holding means 40 is provided which can temporarily hold the above-mentioned components 4 and 4 at a constant relative position and at a constant mutual distance outside the electric discharge machining oil tank 10.

Referring also to FIG. 7, the holding means 40 is
Two sets are provided on the diagonal of the lower substrate 13 and the upper substrate 14, and a support column 41 that is erected on the lower substrate 13 and a holding provided on the lower plate 14a of the upper substrate 14 at a position corresponding to the support column 41 are provided. A hole 42 and a holding member 43 that can be fitted into the holding hole 42 from below to support the upper substrate 14 and that is detachably attached to the upper end of the column 41 are provided.

The holding hole 42 is formed in the lower plate 14a of the upper substrate 14 having at least a tapered portion 42a having a larger diameter as it goes downward. On the other hand, the holding member 43
Is a truncated cone portion 43a that fits into the tapered portion 42a from below.
And the truncated cone portion 4 which can be brought into contact with the lower surface of the lower plate 14a.
The support column 43b is formed in a cap shape and has a support flange portion 43b that extends outward in the radial direction from the lower end of 3a.
Over the top of.

Moreover, the outer diameter D of the support column 41₁Is holding means 4
0 holds the space between the lower substrate 13 and the upper substrate 14
The upper substrate 14 becomes the lower substrate 13 during the electric discharge machining in the removed state.
When approaching, at least the range that is inserted into the holding hole 42
Then, the minimum inner diameter D of the holding hole 42 ₂Set smaller than
Therefore, the post 41 holds holes during electric discharge machining.
42 between the lower substrate 13 and the upper substrate 14 by contacting the inner surface of 42.
Electrical short circuits are avoided.

By the way, before temporarily holding the lower substrate 13 and the upper substrate 14 in a state where their relative positions are constant by the two sets of holding means 40, the lower substrate 13 and the upper substrate 14 are held in a horizontal plane. The relative position needs to be fixed and positioned, and the structure and method therefor will be described below.

A base end of a first measuring shaft 45 extending vertically on the lower substrate 13 and a second measuring shaft 4 extending vertically on a diagonal line crossing a diagonal line where the two sets of holding means 40 are provided.
The upper substrate 1 has first and second measurement holes 47 and 48 which are fixed to the base end of 6 and through which both measurement shafts 45 and 46 can be individually inserted.
The lower plate 14a of each of the four 4 is drilled.

In FIG. 8, the first measurement hole 47 has an upper taper hole portion 47a having a larger diameter toward the upper side, a hole portion 47b coaxially connected to the lower end of the upper taper hole portion 47a, and a larger diameter as it goes downward. A lower taper hole portion 47c which is formed to have a diameter and is coaxially connected to the lower end of the hole portion 47b is sequentially connected from the upper side, and the second measurement hole 48 is
Similar to the first measurement hole 47, the upper tapered hole portion 48a, the hole portion 48b, and the lower tapered hole portion 48c are coaxially connected in series, and the inner diameters D _I of both the hole portions 47b and 48b are set to be the same. To be done.

At the tip of the first measuring shaft 45, a first measuring portion 45a and a first confirming portion 45c are provided in order from the tip side with a groove 45b interposed therebetween, and the first confirming portion is formed. The outer diameter D _{O of} 45c is the hole portion 47 in the first measurement hole 47.
It is set to be smaller than the inner diameter D _{I of} b by an allowable tolerance. That is, when the allowable radius tolerance is a, the inner diameter D _I is defined as (D _I = D _O + 2a). The outer diameter of the first measuring section 45a is set to be sufficiently smaller than that of the first confirming section 45c.

At the tip of the second measuring shaft 46, there is provided a taper portion 46a having a smaller diameter as it goes upward, and a second measuring portion 4
And 6b, a second confirmation unit 46c is provided from the distal end side in order, an outer diameter D _O of the second confirmation unit 46c, the second measurement hole 4
The inner diameter D _I of the hole 48b in FIG. That is, the inner diameter D _I is
(D _I = D _O + 2a). The second measuring unit 4
6b is connected to the upper end of the second confirming portion 46c via a step so that the diameter of the 6b is sufficiently smaller than that of the second confirming portion 46c.

The groove portion 45b of the first measuring shaft 45 corresponds to the second measuring portion 46b of the second measuring shaft 46.
When the measuring portion 46b moves horizontally within the hole portion 48b of the second measuring hole 48, the hole portion 47b of the first measuring hole 47 is moved.
It is formed so as to avoid contact with the inner surface. The second
The tapered portion 46 a of the measurement shaft 46 is the first measurement shaft 45 of the first measurement shaft 45.
The first measurement unit 45a corresponds to the measurement unit 45a.
Are formed so as to avoid contact with the inner surface of the hole 48b of the second measurement hole 48 when moving horizontally in the hole 47b of the first measurement hole 47. Furthermore, in the first and second measurement shafts 45 and 46, the first and second confirmation units 45c and 46
The portion below c is the first and second measurement holes 47, 4
It is formed to have a sufficiently small diameter so that it will not come into contact with the inner surfaces of the hole portions 47b and 48b when it is inserted into the inside.

By the way, in order to move the lower substrate 13 and the upper substrate 14 relative to each other in a horizontal plane, the lower substrate 13 and the upper substrate 14 are temporarily assembled outside the electric discharge machining oil tank 10 as shown in FIG. X-direction driving means 49 such as a pair of pulse motors for moving the substrate 13 in the X-axis direction in the horizontal plane is arranged at both ends of the lower substrate 13 along the X-axis direction, and the lower substrate 13 is in the horizontal plane. Y-direction driving means 50 such as a pair of pulse motors for moving in the Y-axis direction is arranged at both ends of the lower substrate 13 along the Y-axis direction.

In positioning the lower substrate 13 and the upper substrate 14 in the horizontal plane with such a configuration, the following first to third steps are sequentially performed.

[First Step]; Before the lower substrate 13 and the upper substrate 14 are temporarily assembled by the holding means 40, a space between the lower substrate 13 and the upper substrate 14 is set to the first substrate as shown in FIG.
The first measuring portion 45a of the measuring shaft 45 is held at an interval such that it is located inside the hole portion 47b of the first measuring hole 47. In this state, the hole portion 47b of the first measurement hole 47 and the first measurement portion 45a
Means, for example, in a state where the mutual axes are displaced as shown in FIG. Therefore, the lower substrate 13 is arranged along the X-axis direction,
For example, when it is moved to the left side in FIG. 10 by X ₁ , the first measuring portion 45a comes into contact with the inner surface of the hole portion 47b. Thus, by monitoring the electrical connection between the first measuring shaft 45 and the upper substrate 14, it is possible to detect the contact of the first measuring portion 45a with the inner surface of the hole 47b. Further, the lower substrate 13
Is moved along the X-axis direction to the right side in FIG. 10 by (X ₁ + X ₂ ), the fact that the first measuring portion 45a contacts the inner surface of the hole portion 47b indicates that between the first measuring shaft 45 and the upper substrate 14. If it is detected by monitoring the electrical conduction state, the movement amount (X ₁ + X ₂ ) is detected by the operation amount of the X-direction drive means 49. After that, when the lower substrate 13 is returned to the left side of FIG. 10 by (X ₁ + X ₂ ) / 2, the axes of the first measurement shaft 45 and the first measurement hole 47 are aligned along the X-axis direction. .

Next, the lower substrate 13 is moved along the Y-axis direction in the same manner as the above-mentioned movement in the X-axis direction, and the amount of movement (Y
₁ + Y ₂ ), the first measuring axis 45 and the first measuring axis 45
The axes of the measurement holes 47 can be aligned along the Y-axis direction, and as a result, the axes of the first measurement shaft 45 and the first measurement hole 47 can be aligned.

At this time, the taper portion 46a of the second measuring shaft 46
Does not come into contact with the inner surface of the second measurement hole 48 and does not hinder the axial alignment of the first measurement shaft 45 and the first measurement hole 47.

[Second Step]; the upper substrate 14 is set to the above first
The step is made to be closer to the lower substrate 13 than the step, and as shown in FIG. 11, the second measuring portion 46b of the second measuring shaft 46 is held at an interval such that the second measuring portion 46b is located in the hole portion 48b of the second measuring hole 48. Similar to the first step, by moving the lower substrate 13 in the XY directions, the axes of the second measurement shaft 46 and the second measurement hole 48 can be aligned with each other. The relative position of the board 14 can be more accurately positioned.

At this time, the groove portion 45b of the first measuring shaft 45 does not come into contact with the inner surface of the first measuring hole 47, which hinders the axial alignment of the second measuring shaft 46 and the second measuring hole 48. There is no.

(Third step);
As shown in FIG. 8, the first confirming portion 45c of the first measuring shaft 45 is placed inside the hole portion 47b of the first measuring hole 47, and the second measuring shaft 46 is located closer to the lower substrate 13 than the step. Two
The confirmation portion 46c is positioned inside the hole portion 48b of the second measurement hole 48. Thus, the hole portion 47b of the first confirmation portion 45c
Contact with the inner surface and the hole 48b of the second confirmation portion 46c
When it is confirmed by monitoring the electrical conduction state that there is no contact with the inner surface, it is confirmed that the relative position of the lower substrate 13 and the upper substrate 14 in the horizontal plane is fixed.

Therefore, the lower substrate 1 is held by the holding means 40 while keeping the relative positions of the lower substrate 13 and the upper substrate 14 constant.
3 and the upper substrate 40 may be held in a temporary assembled state.

Next, the operation of this embodiment will be described. When performing die-sinking processing on the die materials W ₁ and W ₂ with this electric discharge machining apparatus, a pair of electrodes is formed on the lower substrate 13 outside the electric discharge machining oil tank 10. The mold materials W ₁ and W ₂ are positioned and fixed, and the pair of discharge electrodes E ₁ and E ₂ are positioned and fixed to the upper substrate 14, respectively.
And the relative position of the upper substrate 14 is fixed.

At this time, while the upper substrate 14 is gradually brought close to the lower substrate 13, the first measuring shaft 45 and the first measuring hole 4 are formed.
7 and the second measuring axis 46
And the second step of aligning the axes of the second measurement holes 48, and the first and second measurement axes 45, 46
By sequentially performing the third step of confirming whether or not the axes are aligned in the measurement holes 47, 48, the relative position between the lower substrate 13 and the upper substrate 14 is simply and accurately positioned. be able to.

Next, a pair of holding means 40, 40 holds the relative positions of the lower substrate 13 and the upper substrate 14 and the distance between them constant, and a pair of auxiliary struts 44 each having a retaining ring 46 mounted on the upper end thereof. , 44 at lower substrate 13
And the space between the upper substrates 14 is auxiliary maintained. That is, in the two sets of holding means 40, 40, the holding member 43 mounted on the upper end of the support column 41 is attached to the holding hole 42 of the upper substrate 14.
By fitting into the above, the relative positions of the lower substrate 13 and the upper substrate 14 are fixed, and the distance between the lower substrate 13 and the upper substrate 14 is kept constant.

As described above, the lower substrate 13 and the upper substrate 14 which are held by the holding means 40, 40 at a constant relative position and a constant mutual distance, have the mold materials W ₁ , W ₂ attached to them. And the discharge electrodes E ₁ and E ₂ ,
It is carried into the electric discharge machining oil tank 10.

In the electric discharge machining oil tank 10, the base 11
With the lower substrate 13 fixed to the ram 12 and the upper substrate 14 fixed to the mounting plate 12a of the ram 12, the upper substrate 1 is fixed by the ram 12.
Raise 4 As a result, the supporting state of the upper substrate 14 by the holding means 40, 40 is released, so that both support columns 4
The holding members 43, 43 are removed from the upper ends of 1, 41.

As a result, the setup work for carrying out the electric discharge machining is almost completed, and the discharge electrodes E ₁ and E ₂ are engraved on the upper surfaces of the die materials W ₁ and W ₂ by the lowering of the ram 12. You can descend to a position where you can do it. At this time, the columns 41, 41 and the first and second measuring shafts 45, 46 do not come into contact with the upper substrate 14, and an electrical short circuit between the lower substrate 13 and the upper substrate 14 is avoided.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various small design changes can be made without departing from the present invention described in the claims. It is possible to

For example, the upper substrate 14 may be provided with the first and second measuring axes, and the lower substrate 13 may be provided with the first and second measuring holes. Further, each measuring hole and the measuring axis may have a circular cross-sectional shape. It is not necessary that the upper substrate 14 be XY in the horizontal plane.
You may make it move to a direction. Further, the present invention is
It can be widely applied not only to the electric discharge machine but also for positioning two members that can approach and separate from each other.

[0047]

As described above, according to the method of the present invention, with the stepwise mutual proximity of the first and second members, the first measuring axis and the first measuring hole are made to have the same axial center. Step, a second step of aligning the axes of the second measurement axis and the second measurement hole, and first and second measurement axes are the first and second
Since the third step of confirming whether the axes are aligned in the measurement hole is sequentially performed, it is possible to position the first and second members efficiently and accurately.

Further, in the device of the present invention, the first measuring portion and the first confirming portion are provided at the distal end portion of the first measuring shaft with an interval in order from the distal end side, and at the distal end portion of the second measuring shaft. Is provided with a second measuring section and a second confirming section spaced apart from each other in order from the tip end side, and a portion corresponding to the second measuring section of the first measuring shaft is the second measuring section.
It is possible to avoid contact with the inner surface of the first measurement hole regardless of the relative movement of the measurement section in the XY directions in the second measurement hole, and the portion of the second measurement axis corresponding to the first measurement section is the first measurement section. It is possible to avoid contact with the inner surface of the second measurement hole regardless of the relative movement of the first measurement hole in the XY directions, and the first and second confirmation portions are at positions corresponding to each other. ~ The method of the present invention in which the third step is sequentially performed can be appropriately performed.

[Brief description of drawings]

FIG. 1 is a vertical side view of an electric discharge machine, which is a cross-sectional view taken along line 1-1 of FIGS. 2 and 3.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

3 is a sectional view taken along line 3-3 of FIG.

4 is an enlarged cross-sectional view taken along line 4-4 of FIG.

5 is an enlarged sectional view taken along line 5-5 of FIG.

6 is an enlarged sectional view taken along line 6-6 of FIG.

7 is an enlarged exploded cross-sectional view taken along line 7-7 of FIG.

FIG. 8 is a view showing a state where the first and second measurement shafts are inserted through the first and second measurement holes in the third step.
FIG. 8 is an enlarged sectional view taken along line 8-8 of FIG. 3.

FIG. 9 is a sectional view corresponding to FIG. 8 in the first step.

FIG. 10 is a transverse cross-sectional view showing the relative positional relationship between the first measurement axis and the first measurement hole in the first step.

FIG. 11 is a sectional view corresponding to FIG. 8 in the second step.

[Explanation of symbols]

 13 Lower Substrate as First Member 14 Upper Substrate as Second Member 45 First Measuring Axis 45a First Measuring Section 45c First Confirming Section 46 Second Measuring Axis 46b Second Measuring Section 46c Second Confirming Section 47 First Measurement Hole 48 Second measurement hole

Claims (2)

[Claims] 1. Positioning of first and second members (13, 14) facing each other and capable of approaching / separating with a fixed relative position in an XY plane orthogonal to their approaching / separating directions. In the method of positioning the two members for
The first and the second members are fixed to the first member (13) at the base ends of the first and second measuring shafts (45, 46) extending along the approaching / separating directions of the second member (13, 14).
The second member (14) has first and second measurement holes (47, 48) through which the tips of the measurement shafts (45, 46) can be individually inserted.
In a state in which the first and second members (13, 14) are kept at the first distance and the second measurement shaft (46) and the inner surface of the second measurement hole (48) are prevented from contacting each other. A first step in which only one of the first and second members (13, 14) is moved in the XY directions to align the axes of the first measurement axis (45) and the first measurement hole (47), and And a state in which the second member (13, 14) is kept at a second distance shorter than the first distance and the contact between the first measuring shaft (45) and the inner surface of the first measuring hole (47) is avoided. By moving only one of the first and second members (13, 14) in the XY directions, the second measurement shaft (45) and the second measurement hole (4
8) The second step of aligning the axes and the first and second members (13, 14) are kept at a third distance shorter than the second distance, and the first and second measurement axes (45, Four
6) The step of 3) for confirming whether or not the axes of the first and second measurement holes (47, 48) are aligned with each other. 2. The first and second members (13, 14) facing each other and capable of approaching / separating are positioned with their relative positions fixed in an XY plane orthogonal to their approaching / separating directions. A two-member positioning device for
The base ends of the first and second measurement shafts (45, 46) extending along the approaching / separating directions of the second member (13, 14) are fixed to the first member (13), and the first and second measurements are performed. The second member (14) is provided with first and second measurement holes (47, 48) through which the tips of the shafts (45, 46) can be individually inserted, and the tips of the first measurement shaft (45) are provided. , A first measuring part (45a) whose shape is determined to allow relative movement in the XY directions within the first measuring hole (47), and a shape smaller than the first measuring hole (47) by an allowable tolerance. And a first confirmation portion (45c) that is defined as
A second measurement hole (48) is provided at the tip of the second measurement shaft (46).
A second measuring part (46b) whose shape is defined to allow relative movement in the XY direction inside the second measuring part (46b) whose shape is defined smaller than the second measuring hole (48) by an allowable tolerance. 46c) are sequentially provided from the tip end side, and the portion corresponding to the second measuring portion (46b) of the first measuring shaft (45) is XY in the second measuring hole (48) of the second measuring portion (46b). The second measurement shaft (46) is formed in a shape that can avoid contact with the inner surface of the first measurement hole (47) regardless of relative movement in the direction.
Of the first measurement part (45a) contacts the inner surface of the second measurement hole (48) regardless of the relative movement of the first measurement part (45a) in the first measurement hole (47) in the XY directions. The first and second confirmation portions (45
c, 46c) are provided on the first and second measuring axes (45, 46) at positions corresponding to each other, respectively, a two-member positioning device.