JP2944794B2 - Fixture - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixture such as a two-sided scale or a four-sided block mounted on a mounting surface of a pallet or a table of a machine tool.

[0002]

2. Description of the Related Art FIGS. 5 and 6 show, for example, conventional mounting devices of this type.

In the prior art shown in FIG. 5, a two-sided scale 2 as a fixture is provided on a mounting surface 21a of a pallet 21.
2, a body portion 23 having a pair of mounting surfaces 23a extending in an upright direction and a base flange portion 24 are integrally formed on the scale 22. An auxiliary plate 25 as an object to be mounted is mounted on both mounting surfaces 23a of the scale 22, and a work is fixed to the surface of the auxiliary plate 25 via a jig or the like.

A plurality of insertion holes 26 are formed in the mounting surface 23a of the scale 22, and a plurality of insertion holes 27 are formed in the auxiliary plate 25 so as to correspond to the insertion holes 26. Then, the auxiliary plate 25 is attached to the mounting surface 23.
a, the positioning plate 28 is inserted into the insertion holes 26 and 27 with the two insertion holes 26 and 27 being aligned with each other, whereby the auxiliary plate 2
5 is positioned at a predetermined vertical position with respect to the mounting surface 23a.

On the other hand, in the case of the conventional device shown in FIG.
A two-sided scale 22 mounted on the mounting surface 21a of the pallet 21 includes a main body 23 having a pair of mounting surfaces 23a,
It is formed separately from the base flange portion 24 and is assembled and fixed to each other. And
When the auxiliary plate 25 is mounted on the mounting surface 23a, the lower edge of the auxiliary plate 25 is brought into contact with the upper surface of the flange portion 24 so that the auxiliary plate 25 is mounted on the mounting surface 2a.
3a is positioned at a predetermined position in the vertical direction with respect to 3a.

[0006]

In the prior art shown in FIG. 5, however, the auxiliary plate 25 is suspended by a crane or the like, and the insertion hole 27 of the auxiliary plate 25 and the insertion hole 26 of the mounting surface 23a are provided. It is necessary to insert the positioning pin 28 while aligning the position. At this time, there is a problem that the auxiliary plate 25 is heavy and a jig is usually attached to a surface thereof (a work is sometimes attached), and it takes time to insert the positioning pins 28. Was.

[0007] In the prior art shown in FIG.
Suspend the auxiliary plate 25 with a crane etc.
Since the positioning of the auxiliary plate 25 in the vertical direction is completed only by placing it on the second flange portion 24, the positioning operation can be easily performed. However, in this conventional device, it is necessary to precisely grind the upper surface and the lower surface of the flange portion 24 to obtain dimensional accuracy between the upper and lower surfaces thereof. It has to be formed separately and assembled and fixed to each other, and there is a problem that the manufacture of the scale 22 is troublesome and costly. By the way, as shown in FIG. 5, in the scale 22 in which the main body portion 23 having the mounting surface 23a and the flange portion 24 are integrally formed, when the upper surface of the flange portion 24 is ground, the cutting process is very difficult. It is difficult and cannot be finished with high precision. For this reason, like the scale 22 shown in FIG.
Therefore, the upper and lower surfaces of the flange portion 24 need to be ground independently of the main body portion 23.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to move an attached body such as an auxiliary plate to a predetermined position in a vertical direction with respect to an attachment surface. It is an object of the present invention to provide a fixture that can easily perform positioning in a short time, and that has a simple positioning structure therefor and can reduce manufacturing costs.

[0009]

According to an aspect of the present invention, there is provided a fixture having the following configuration. That is, it mounted on the mounting surface of the machine tool palette or table, comprising: a body having a mounting surface extending in a direction perpendicular to its mounting surface, and a flange portion of the base mounting
The main body and the flange are integrally formed.
And a vertically extending through-hole is formed in the flange portion, and the through-hole is precisely dimensioned in the up-down direction.
Insert the finished positioning liner. Which is brought into contact with the lower end face of the liner to the mounting surface, the upper end surface of the liner is protruded upward from the flange portion, and so as to abut against the lower edge of the mounted that the attached body to the mounting surface It is.

[0010]

[Operation] When the object to be mounted is placed on the liner, the upper end surface of the liner contacts the lower edge of the object to be mounted.
The lower end surface of the liner is in contact with the mounting surface of the pallet or table, and the mounted body is positioned at a predetermined vertical position with respect to the mounting surface.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the fixture according to the present invention will be described.
This will be described in detail with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a pallet detachably attached to an MC machine tool or the like, and a plurality of T-grooves 2 are formed on a mounting surface 1a on the upper surface thereof, as clearly shown in FIG. (Tap holes may be formed instead of the T-grooves). On the mounting surface 1a of the pallet 1, a two-sided scale 3 as a fixture is mounted, and a plurality of nuts 4 inserted into the T-groove 2 and a plurality of bolts 5 screwed to the nut 4 are provided. Thus, it is fixed to the mounting surface 1a.

The scale 3 is a mounting surface 1 for the pallet 1.
a pair of mounting surfaces 6 extending in parallel to the direction upright
a, and a flange portion 7 formed integrally with the base portion, and has a substantially inverted T-shaped cross section. An auxiliary plate 9 as an object to be mounted is mounted on the mounting surface 6a of the scale 3 with a plurality of bolts 8, and a work (not shown) is fixed to the surface of the auxiliary plate 9 via a jig or the like.

A pair of through-holes 10 are formed in the flange portion 7 of the scale 3 so as to extend in the vertical direction in the vicinity of both mounting surfaces 6a, and have a lower large-diameter portion 10a and an upper small-diameter portion 10b. ing. Each through hole 10 has a vertical direction , that is,
Positioning liner 1 with precisely finished vertical dimensions
1 is inserted from below, and has a large-diameter base 11a at its lower end.
And an annular groove 11b is formed at the upper end protruding upward from the flange portion 7. A stop ring 12 such as an O-ring or a snap ring is fitted into the annular groove 11b so that the liner 11 does not come off the through hole 10.

When the scale 3 is mounted on the mounting surface 1a of the pallet 1, the lower end surface of the liner 11 comes into contact with the mounting surface 1a, and as shown in FIG.
The base portion 11a of the liner 11 is accommodated and arranged so as to form a clearance in the large-diameter portion 10a of the through hole 10, that is, to form a slight interval. When the auxiliary plate 9 is mounted on the mounting surface 6a of the scale 3, the upper end surface of the liner 11 protruding upward from the flange portion 7 contacts the lower edge of the auxiliary plate 9, and the auxiliary plate 9 is mounted on the mounting surface 6a. Is positioned at a predetermined position in the vertical direction with respect to.

Next, the operation of the thus constructed fixture will be described. When the auxiliary plate 9 is mounted on the mounting surface 6a of the scale 3 while the two-sided scale 3 is mounted on the mounting surface 1a of the pallet 1, the auxiliary plate 9 is hung by a crane or the like, and a pair of liners 11 is mounted. Place on top. The upper end surface of the liner 11 is in contact with the lower edge of the auxiliary plate 9, and the lower end surface of the liner 11 is in contact with the mounting surface 1 a of the pallet 1. It is positioned at a predetermined position.

Therefore, unlike the conventional one shown in FIG.
There is no need to perform a troublesome operation of inserting a positioning pin into the insertion hole while aligning the insertion hole of the auxiliary plate with the insertion hole of the mounting surface, and the positioning operation of the auxiliary plate 9 is performed easily and in a short time. be able to.

Further, unlike the conventional one shown in FIG. 6, in a state where the main body portion and the flange portion of the scale are divided and formed,
There is no need to perform the complicated processing of grinding the upper surface of the flange portion, and the upper and lower end surfaces of the liner 11 are grinded ,
That is, the positioning accuracy of the auxiliary plate 9 can be improved as long as the vertical dimension is precisely finished. Therefore, by forming the main body 6 having the mounting surface 6a and the flange 7 integrally, the manufacture of the scale 3 can be facilitated, and the manufacturing cost can be reduced.

The present invention is not limited to the configuration of the above-described embodiment, but can be modified as follows.

(1) The mounting tool may be mounted on the mounting surface of the table of the machine tool instead of the pallet of the machine tool.

(2) Instead of the two-sided scale 3, a four-sided block or another block may be used as a fixture.

(3) A two-sided scale or a four-sided block having a plurality of mounting T-grooves and reference holes formed on the mounting surface 6a may be used as the mounting tool.

(4) As the auxiliary plate 9, a plate having a plurality of T-grooves or reference holes for mounting a jig or the like on its surface may be used.

(5) The auxiliary plate 9 is used as a body to be mounted.
Instead, a vise for clamping the work, another jig, or the work itself may be mounted on the mounting surface 6a.

(6) The liner 11 is not necessarily the large diameter portion 10
It is not necessary to provide a, and a straight shape having the same diameter as a whole may be used.

[0026]

As described above, the mounting fixture according to the present invention precisely measures the vertical dimension of the base flange.
The raised positioning liner is inserted so that the lower end surface of the liner is brought into contact with the pallet or table mounting surface of the machine tool, and the upper end surface is projected upward from the flange portion. In addition, the mounted body can be easily and quickly positioned at a predetermined position in the vertical direction with respect to the mounting surface. Moreover, a flange portion of the main body and the base having a mounting surface by forming integrally, since the structure is easy to manufacture and easy, it is possible to reduce the manufacturing cost.

Further, as described above, since the upper end surface of the liner is located at a position protruding upward from the flange portion, only the chips on the upper end surface of the liner are removed when replacing an attached body such as an auxiliary plate. Since it is sufficient to remove the chips, it is easy to remove the chips.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one embodiment of a fixture according to the present invention.

FIG. 2 is a front view of the attachment.

FIG. 3 is an exploded perspective view of the attachment.

FIG. 4 is an enlarged front view showing a positioning liner.

FIG. 5 is a sectional view showing a conventional attachment.

FIG. 6 is a cross-sectional view showing another example of a conventional attachment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Pallet 1a Mounting surface 3 Two-sided scale as mounting tool 6 Main body 6a Mounting surface 7 Flange 9 Auxiliary plate as mounting object 10 Through hole 11 Positioning liner

Claims (1)

(57) [Claims] 1. A mounted on the mounting surface of the machine tool palette or table, comprising: a body having a mounting surface extending in a direction perpendicular to its mounting surface, and a flange portion of the base portion
The main body and the flange are integrally formed.
A vertically extending through hole is formed in the flange portion, and a positioning liner whose vertical dimension is precisely finished is inserted into the through hole, and a lower end surface of the liner is inserted. Abutting the mounting surface, and projecting the upper end surface of the liner upward from the flange portion to be attached to the mounting surface.
A lower end edge of the body to be mounted being brought into contact.