JP2001009654A - Table supporting mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of a defect in terms of structure and prevent unreasonable bending and the damage of a fastening bolt even when the fastening bolt is fastened with a table inclined. SOLUTION: This table supporting mechanism comprises a spherical nut 11 rotatably supported in all directions by a support part 2a for a table; a height regulating bolt 12 threadedly engaged with a screw hole 12a extending through the table support part 3a of a support frame and regulatable of height and having a through-hole 12b; a spherical washer 13 consisting of an upper spherical washer 13a having an upper surface making contact with the lower end part of the table support part 2a and an under surface being an upper spherical washer 13a being a spherical surface and a lower spherical washer 13b having an upper surface being a spherical surface fitted in the under surface of the upper spherical washer, and under surface making contact with the upper end part of a regulation bolt; and a fastening bolt 14 having a tip part threadedly engaged with a spherical nut with it extending through the hole 12b of the height regulation bolt and fastening together a table and the support frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a table support mechanism provided between a table and a support frame and integrally with the table and supporting the table at a predetermined height on the support frame.

[0002]

2. Description of the Related Art As a conventional table supporting mechanism of this type, for example, as shown in FIG.
01a, a second table support mechanism 101b, and a third table support mechanism 101c, some of which are provided integrally at a plurality of support points between the movable table 102 and the support base 103.

[0003] These table support mechanisms 101 are shown in FIG.
As shown in FIG. 5, a screw hole 1 formed in a vertical direction in a portion 102a of the movable table 102 related to table support.
11 and a plate washer 11 interposed between a lower end of a portion 102a of the movable table 102 which supports the table and an upper end of a portion 103a of the support base 103 which supports the table.
2 and a portion 103 related to the table support of the support base 103
a through the hole of the screw hole 111
And a fastening bolt 113 for fastening the movable table 102 and the support base 103 via the plate washer 112.
Some are composed of

According to the table support mechanism 101,
In addition to simply supporting the movable table 102 on the support frame 103, the movable table 102 is interposed between the lower end of the table support portion 102a of the movable table 102 and the upper end of the table support portion 103a of the support frame 103. The movable table 102 can be set to an arbitrary height by increasing the number of plate washers 112 to be formed and increasing the length of the fastening bolt 113. Therefore, due to the nature of the work, it has been particularly useful in a grinding work in which the height of the movable table 102 (rotary table K) is frequently changed.

[0005]

However, this type of table support mechanism 101 is configured as a mechanism for supporting the movable table 102 at a plurality of support points when used in a grinding operation. There is.

That is, in the grinding operation, in order to adjust the processing state of the work W, it is necessary to change the contact state of the grindstone S with the work W. In this case, conventionally, at any supporting point of the movable table 102, Fastening bolt 11
By tightening or loosening 3, the movable table 102 integrated with the work W is inclined without moving the grindstone S, thereby changing the contact state of the grindstone S with the work W.

However, such a movable table 102
When adjusting the contact state of the grindstone S using the inclination of
In the conventional table support mechanism, since the fastening bolt 113 is fastened in a state where the movable table 102 is inclined, the fastening force is reduced by the head of the fastening bolt 113 or the plate washer 112.
This results in a structural defect that is not transmitted evenly.

Further, if the movable table 102 is inclined in a state where the threaded portion of the fastening bolt 113 is restricted by the screw hole 111, the fastening bolt 113 is forcibly bent or damaged.

Accordingly, an object of the present invention is to provide a structure in which a fastening bolt is fastened in a state where the table is inclined in a grinding operation while adjusting the contact state of the grindstone using the inclination of the table. An object of the present invention is to provide a table support mechanism that does not cause the above defects and does not forcibly bend or damage the fastening bolt.

[0010]

In order to achieve the above object, a table support mechanism according to the present invention is a table support mechanism provided integrally between a table and a support base, wherein the table support mechanism comprises: A spherical nut that is rotatably supported in all directions by a portion related to support, and a screw hole that penetrates a portion related to table support of the support base, and is capable of adjusting its own height. A height adjustment bolt having a hole therethrough, and an upper surface abuts against a lower end of a portion related to table support of the table,
An upper spherical washer having a lower surface being a spherical surface, a spherical washer having an upper surface which is a spherical surface fitted to a lower surface of the upper spherical washer, and a lower surface having a lower surface abutting on an upper end of the height adjusting bolt; A front end screwed into the spherical nut while passing through a hole of the height adjustment bolt, and a fastening bolt for fastening the table and the support base via the height adjustment bolt and the spherical washer. It is characterized by.

That is, the present invention provides a spherical nut, a spherical washer,
And, by realizing technical means that can follow the inclination of the table with a height adjustment bolt, in the grinding work while adjusting the contact state of the grinding wheel using the inclination of the table, in the state where the table is inclined Even if the fastening bolt is fastened, it is possible to provide a table support mechanism that does not cause structural defects and that the fastening bolt is not forcibly bent or damaged.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings. FIG. 1 is a diagram showing a schematic configuration of a table and a support frame to which a table support mechanism according to an embodiment of the present invention is applied (FIG. 1A is a plan view, FIG. 1B is a longitudinal sectional view), FIG. 2 is a view showing a detailed configuration of the table support mechanism (FIG. 2A is a longitudinal sectional view, FIG.
(B) is a view in the direction of arrow A). Note that a table having a rotary table K at the center (hereinafter, referred to as a “movable table”) is taken as an example.

In this embodiment, as shown in FIG. 1, the table support mechanism 1 includes a first table support mechanism 1a,
It comprises a second table support mechanism 1b and a third table support mechanism 1c, and is provided integrally with a plurality of support points (three places) between the movable table 2 and the support base 3. These table support mechanisms 1 serve to support the movable table 2 on the support base 3 and also to adjust the contact state of the grindstone S with the work W in the grinding operation. Note that the grinding operation in the present embodiment is to grind the work W fixed on the movable table 2 with the grindstone S from above.

As shown in FIG. 2, for example, the first table support mechanism 1a of these table support mechanisms 1 includes a spherical nut 11, a height adjusting bolt 12, a spherical washer 13
And fastening bolts 14. Note that the second table support mechanism 1 and the third table support mechanism 1c
Since the configuration is the same as that of the table support mechanism 1a, the same reference numerals are given and the description is omitted.

Here, the spherical nut 11 is rotatably supported in all directions by a portion 2a of the movable table 2 which supports the table. And the spherical nut 11
On the lower side, a lock screw 11a which is a member supporting the spherical nut 11 integrally with the movable table 2 and has a hole penetrating in the axial direction is provided. A coned disc spring 11b for applying an urging force thereto is provided. That is, the spherical nut 11 is always locked with the lock screw 11a by utilizing the urging force of the disc spring 11b.
, So that the fastening bolt 14
When screwed into the spherical nut 11, it is possible to prevent the spherical nut 11 from turning around. In the present embodiment, the rotation of the lock screw 11a is prevented by applying Loctite.

The height adjusting bolt 12 is mounted on the support base 3.
Screw hole 12a penetrating the portion 3a related to the table support
, The height of which can be adjusted freely, and has a hole 12b penetrating in the axial direction.

Further, the spherical washer 13 has an upper surface fixed to a lower end portion of a portion 2a for supporting the table of the movable table 2, and an upper spherical washer 13a having a spherical lower surface and an upper surface formed on a lower surface of the upper spherical washer 13a. It is a spherical surface to be fitted, and has a lower spherical washer 13b whose lower surface is fixed to the upper end of the height adjusting bolt 12. The spherical washer 13 is provided at the lower end of the portion 2a for supporting the table and the height adjusting bolt 1
It is not an essential condition in the present invention to be fixed to the upper end of 2, and it may be just abutted.

Further, the tip of the fastening bolt 14 is screwed into the spherical nut 11 while passing through the hole 12b of the height adjusting bolt 12, thereby connecting the movable table 2 and the support base 3 to the height adjusting bolt 12. And a spherical washer 13.

A nut 12c for a height adjustment bolt is attached to a lower portion of the height adjustment bolt 12, and the nut 12c for the height adjustment bolt 12 is attached to the height adjustment bolt 12 due to mechanical vibration or the like. Plays a role in preventing the decline.

In this embodiment, an extra space Y is provided between the peripheral surface of the fastening bolt 14 and the hole of the lock screw 11a, and between the fastening bolt 14 and the hole of the spherical washer 13. The extra space Y plays a role in securing the movement of the fastening bolt 14 and the spherical washer 13 when the first table support mechanism 1a performs the operation according to the present invention.

Next, the operation of the table support mechanism according to the present embodiment will be described with reference to FIGS. That is, in this grinding operation, adjustment of the processing state of the work W is realized by adjusting the contact state of the grindstone S with the work W as described below. Note that the adjustment of the contact state of the grinding wheel S in the present embodiment is performed while the grinding operation is stopped, thereby ensuring safety.

The contact state of the grindstone S with the work W is adjusted by moving a table support mechanism relating to an arbitrary support point such that the movable table 2 is set to an arbitrary height and inclination. Do. For example, when the movable table 2 is set low in the first table support mechanism 1a, the following operation is performed.

First, the fastening bolt 14 is loosened by an amount corresponding to the required stroke, and thereafter, the nut 12c for the height adjusting bolt is also loosened by an amount corresponding to the required stroke.

In such a state, when the height adjusting bolt 12 is rotated in a predetermined direction, the height adjusting bolt 1 is rotated.
2 moves downward along a screw hole 12a that penetrates a portion 3a of the support base 3 that supports the table.

Then, the portion of the movable table 2 mounted on the height adjustment bolt 12 via the spherical washer 13 relating to the first table support mechanism 1a is moved to the height adjustment bolt 12
It moves downward following the movement of.

At this time, the movable table 2 does not move downward as a whole, but the first table support mechanism 1a.
Since only the portion related to moves in the downward direction, it gradually inclines with the downward movement.

Then, in the table support mechanism 1 relating to the remaining support points, on the other hand, the lower surface of the upper spherical washer 13a and the upper surface of the lower spherical washer 13b are displaced laterally within the margin Y, and The upper surface of the washer 13a and the lower surface of the lower spherical washer 13b match the inclination of the movable table 2, thereby avoiding a structural defect.

On the other hand, the fastening bolt 14 rotates around the spherical nut 11 within the area of the extra space Y, so that the fastening bolt 14 is not forcibly bent or damaged.

Further, the functions of the spherical washer 13 and the spherical nut 11 in the table support mechanism 1 relating to the remaining support points are simultaneously exerted in the first table support mechanism 1a. Also in the table support mechanism 1a, there can be obtained an effect that a structural defect is not caused and the fastening bolt 14 is not forcibly bent or damaged.

After the setting of the height and the inclination of the movable table 2 is completed, the nut 12c for the height adjusting bolt is tightened, and then the tightening bolt 14 is tightened. Adjustment of the state ends.

[0031]

According to the present invention, with the above construction, in a grinding operation while adjusting the contact state of the grindstone using the inclination of the table, the fastening bolt is fastened with the table inclined. Even in such a case, it is possible to provide a table support mechanism that does not cause structural defects and does not forcibly bend or damage the fastening bolt.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a table and a support base to which a table support mechanism according to an embodiment of the present invention is applied (FIG. 1A is a plan view, and FIG. 1B is a longitudinal sectional view). It is.

FIG. 2 is a view showing a detailed configuration of a table support mechanism according to one embodiment of the present invention (FIG. 2A is a longitudinal sectional view, FIG.
(B) is a view in the direction of arrow A).

FIGS. 3A and 3B are diagrams showing a schematic configuration of a table and a support base to which a table support mechanism as a conventional example is applied (FIG. 3A is a plan view, and FIG. 3B is a longitudinal sectional view).

FIG. 4 is a longitudinal sectional view showing a detailed configuration of a table support mechanism as a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Table support mechanism 1a ... 1st table support mechanism 1b ... 2nd table support mechanism 1c ... 3rd table support mechanism 2 ... Movable table 2a ... Part related to table support (of a movable table) 3 ... Support stand 3a ... (support) 11) Spherical nut 11a ... Lock screw 11b ... Belleville spring 12 ... Height adjustment bolt 12a ... Screw hole 12b ... Hole 12c ... Nut for height adjustment bolt 13 ... Spherical washer 13a ... Upper spherical washer 13b ... lower spherical washer 14 ... fastening bolt 101 ... table support mechanism 101a ... first table support mechanism 101b ... second table support mechanism 101c ... third table support mechanism 102 ... movable table 102a ... part related to table support (of the table) 103 ... Support stand 103a ... A part related to table support (of the support stand) 11 ... screw holes 112 ... plate washer 113 ... fastening bolt K ... turntable W ... workpiece S ... grindstone Y ... margin space

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[Procedure amendment]

[Submission date] March 24, 2000 (200.3.2.
4)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

[0010]

That is, a table support mechanism according to the present invention is a table support mechanism provided integrally with a table and a support base between the table and a support base. A spherical nut that is rotatably supported in the direction and a screw hole that penetrates a portion of the support base that is related to the table support, and that can adjust its own height and has a hole that penetrates in the axial direction. A height adjusting bolt, an upper spherical washer whose upper surface abuts against a lower end of a portion related to table support of the table, a lower surface is a spherical surface, and an upper surface is a spherical surface fitted to a lower surface of the upper spherical washer; The tip portion is a spherical washer made of a lower spherical washer contacting an upper end portion of the height adjusting bolt, and a tip portion is passed through a hole of the height adjusting bolt and a hole of the spherical washer. A screw which is screwed to a surface nut and fastens the table and the support base via the height adjustment bolt and the spherical washer in a state where a marginal space is provided between a hole of the spherical washer. It is characterized by consisting of bolts.

Claims (1)

[Claims] 1. A table support mechanism provided integrally between a table and a support base, wherein the spherical nut is rotatably supported in all directions by a portion of the table related to table support; A height adjusting bolt having a hole that is screwed into a screw hole that penetrates a portion related to table support and that can adjust its own height and has a hole that penetrates in the axial direction, and an upper surface according to the table support of the table An upper spherical washer contacting the lower end of the portion and having a spherical lower surface, and a lower spherical washer having an upper surface which is a spherical surface fitted to the lower surface of the upper spherical washer and the lower surface of which contacts the upper end of the height adjusting bolt. A spherical washer made of, and a tip portion is screwed into the spherical nut while passing through a hole of the height adjusting bolt, and the table and the support base are connected to the height adjusting bolt and the height adjusting bolt. Characterized in that comprising a fastening bolt for fastening through the plane washer, table support mechanism.