CN218658086U

CN218658086U - Mounting structure of machine tool measuring device and numerical control machine tool

Info

Publication number: CN218658086U
Application number: CN202223179421.4U
Authority: CN
Inventors: 臧传鹏; 夏敬民; 于文水; 张静; 张�浩
Original assignee: Shandong Haomai Cnc Machine Tool Co ltd
Current assignee: Shandong Haomai Cnc Machine Tool Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-03-21
Anticipated expiration: 2032-11-25

Abstract

The utility model discloses a mounting structure of a machine tool measuring device and a numerical control machine tool, which relate to the technical field of machine tools and comprise a mounting table and a measuring device, wherein the measuring device comprises a reading head and a ruler body, the reading head is mounted at the symmetric center of the bottom surface of a driven piece and is symmetric relative to the motion direction of the driven piece, or the length is set in an offset way, and the offset distance is less than or equal to the length of the reading head; the ruler body is arranged on the mounting table. The utility model discloses a set up the reading head in by driving piece symmetric center or off-set length, can be when temperature variation even expansion or shrink, alleviate the influence of temperature variation to measuring device measured data accuracy, improve equipment operation's stability.

Description

Mounting structure of machine tool measuring device and numerical control machine tool

Technical Field

The utility model relates to a lathe technical field, concretely relates to lathe measuring device's mounting structure and digit control machine tool.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The grating ruler is a measurement feedback device which works by utilizing an optical principle, is widely applied to a closed loop servo system of a numerical control machine tool, and can greatly improve the precision of each operation shaft of the machine tool. Along with the continuous improvement of the precision of the machine tool, the influence brought by the temperature is gradually obvious, and the problem which needs to be solved in the design process of the precision machine tool is solved. Parts such as a workbench, an installation table, a grating ruler and the like all have thermal expansion conditions, and the grating ruler is installed by offsetting the workbench or the installation table in the prior art, so that errors exist in detection precision after thermal expansion.

For example: CN213004159U discloses a mounting structure of grating chi, and the grating chi subassembly is fixed on marble square ruler, avoids with the grating chi direct mount on the ram to fix the reading head on the connecting plate, the lower extreme side at the Z slide is fixed to the connecting plate, avoids moving the foundry goods thermal expansion effect to influence its precision. This scheme reduces the influence of temperature through the mode that increases adapting unit or cooperation change grating chi mounted position, nevertheless has the problem that foundry goods thermal expansion influences the reading head, can't effectively solve the influence to the precision that the thermal expansion that ambient temperature, feed motion temperature lead to leads to, also can't guarantee reasonable, the precision equipment of grating chi.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem, provide a lathe measuring device's mounting structure and digit control machine tool, through setting up the reading head in by driving piece symmetric center or off-set length, can evenly expand or shrink when temperature variation, alleviate the influence of temperature variation to measuring device measured data accuracy, improve equipment operation's stability.

The utility model adopts the following technical scheme:

in a first aspect, a mounting structure of a measuring device of a machine tool is provided, which comprises a mounting table and a measuring device, wherein the measuring device comprises a reading head and a ruler body, the reading head is mounted at the symmetrical center of the bottom surface of a driven part and is symmetrical relative to the moving direction of the driven part, or is offset by a set length, and the offset distance is less than or equal to the length of the reading head; the ruler body is arranged on the mounting table.

As a further implementation, the reading head is connected to the bottom surface of the driven member through the first mounting member.

As a further implementation, the first mounting member is of an L-shaped structure; the long side of the L-shaped structure is arranged on the driven part, and the short side of the L-shaped structure is matched with the reading head.

As a further implementation, the blade is disposed between the first mounting and the second mounting; the second mounting part is fixed with the mounting table, so that the ruler body is indirectly mounted on the mounting table.

As a further implementation mode, the ruler body is attached to the second mounting part and located at the set height of the second mounting part.

In a further implementation, the second mounting part is of an L-shaped structure and is arranged opposite to the first mounting part.

As a further implementation mode, the mounting table is provided with a positioning bulge, and the ruler body is attached to the positioning bulge to be directly fixed with the mounting table.

As a further implementation mode, the reading head is arranged on the side, opposite to the positioning bulge, of the ruler body.

As a further implementation, a slide rail assembly is arranged between the driven piece and the mounting table.

In a second aspect, a numerically-controlled machine tool is provided, which comprises the mounting structure.

The utility model has the advantages as follows:

the utility model discloses a blade is direct or indirect to be installed in the mount table, and the driving piece is installed in by the driving piece for can be followed the guide rail by the driving piece and removed, the reading head is installed in by the driving piece through first installed part, and reading head mounted position is located the center of symmetry by driving piece or mount table, and when temperature variation, can even inflation or shrink, because of the error that hot migration brought, improve equipment operation's stability when alleviateing measuring device feedback data.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

Fig. 1 is a top view of a first embodiment of the present invention;

fig. 2 is a front view of a first embodiment of the present invention;

fig. 3 is a front view of the second embodiment of the present invention.

Wherein: 1. ruler body, 2, first installed part, 3, reading head, 4, mount table, 5, driving piece, 6, driven piece, 7, guide rail, 8, second installed part, 9, installation face, 10, location arch.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and examples.

The first embodiment is as follows:

the embodiment provides a mounting structure of a machine tool measuring device, as shown in fig. 1 and fig. 2, comprising a mounting table 4 and a measuring device, wherein the measuring device is a grating ruler assembly and comprises a ruler body 1 and a reading head 3.

As shown in fig. 2, a driving member 5 is installed on the upper side of the installation table 4, guide rails 7 are symmetrically installed on both sides of the driving member 5, a driven member 6 is connected between the tops of the two guide rails 7, and the driven member 6 can be moved in the longitudinal direction of the guide rails 7 by the driving member 5. Wherein the driven member 6 is a table.

The measuring device of the embodiment is arranged between the driving member 5 and the guide rails 7 on either side, the mounting position is as close to the gravity center of the driven member 6 as possible, and the mounting position is optimally the symmetrical center of the driven member 6, namely, the reading head 3 is at the same distance from the two ends of the driven member 6 along the moving direction of the driven member 6. If the structure is limited, when the reading head 3 cannot be arranged at the symmetrical center, the offset can be carried out properly, and the offset distance is less than or equal to the length of one reading head 3.

In the embodiment, the ruler body 1 is indirectly arranged on the mounting table 3, the reading head 3 is arranged on the driven part 6 through the first mounting part 2, and the ruler body 1 and the reading head 3 are arranged up and down; the installation position of the reading head 3 is positioned at the symmetrical center of the driven part 6, and the reading head can uniformly expand or contract when the temperature changes, so that the influence of the temperature change on the accuracy of the measured data of the measuring device is obviously reduced.

First installed part 2 is L type structure, and first installed part 2 can be dismantled with driven piece 6 and be connected, and the terminal surface (the step face) laminating of reading head 3 and first installed part 2. The long side of the L-shaped structure is arranged on the driven part, and the short side of the L-shaped structure is matched with the reading head 3.

With the orientation shown in fig. 2 as a reference, the side of the ruler body 1 opposite to the first mounting part 2 is provided with a mounting surface 9, the top of the ruler body 1 is provided with a positioning surface, and the positioning surface and the mounting surface 9 are attached to the second mounting part 8; the blade 1 is positioned between the first mounting part 2 and the second mounting part 8 and at the set height of the second mounting part 8.

The second mounting element 8 is also of L-shaped configuration, arranged opposite the first mounting element 2, with the short sides of the first and

second mounting elements

2, 8 arranged towards each other; the short side of the first mounting part 2 is positioned at the bottom end, and the short side of the second mounting part 8 is positioned at the top end so as to adapt to the positioning surface and the mounting surface 9; the bottom end of the second mounting part 8 is connected with the mounting table 4.

The reading head 3 of the measuring device of the embodiment is arranged on the driven part 6 through the first mounting part 2, and the reading head 3 is positioned at the symmetrical center of the driven part 6, so that the uniform expansion or contraction can be realized when the temperature changes.

Example two:

the present embodiment provides a mounting structure of a machine tool measuring device, which is different from the first embodiment in that the measuring device is directly mounted on a mounting table 4; as shown in figure 3, the surface of the mounting table 4 is provided with a positioning bulge 10 for limiting the ruler body 1 of the measuring device.

The bottom surface of the ruler body 1 is an installation surface 9, and the installation surface 9 is attached to the installation platform 4; the reading head 3 is arranged on one side of the ruler body 1 and is connected with the driven part 6, the ruler body 1 and the reading head 3 are arranged left and right, and the reading head 3 is positioned on the left side of the ruler body 1 by taking the direction shown in figure 3 as reference; by locating the reading head 3 at the centre of symmetry or offset by a set length of the driven member 6, it is possible to expand or contract uniformly as the temperature changes.

Example three:

the embodiment provides a numerical control machine tool, which comprises the mounting structure described in the first embodiment or the second embodiment.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The mounting structure of the measuring device of the machine tool is characterized by comprising a mounting table and a measuring device, wherein the measuring device comprises a reading head and a ruler body, the reading head is mounted at the symmetrical center of the bottom surface of a driven part and is symmetrical relative to the moving direction of the driven part, or is offset by a set length, and the offset distance is less than or equal to the length of the reading head; the ruler body is arranged on the mounting table.

2. The mounting structure of a machine tool measuring device according to claim 1, wherein the reading head is connected to the bottom surface of the driven member by a first mounting member.

3. The mounting structure of a machine tool measuring device according to claim 2, wherein the first mounting member is an L-shaped structure; the long side of the L-shaped structure is arranged on the driven part, and the short side of the L-shaped structure is matched with the reading head.

4. A mounting arrangement for a machine tool measuring device according to claim 3 in which the blade is disposed between first and second mounting means; the second mounting part is fixed with the mounting table, so that the ruler body is indirectly mounted on the mounting table.

5. The mounting structure of a machine tool measuring device of claim 4 wherein the blade engages the second mounting member at a set height of the second mounting member.

6. The mounting structure of a machine tool measuring device according to claim 4, wherein the second mounting member is an L-shaped structure and is disposed opposite to the first mounting member.

7. The mounting structure of a machine tool measuring device according to claim 1, wherein the mounting table is provided with a positioning projection, and the blade is fitted with the positioning projection to be directly fixed to the mounting table.

8. The mounting structure of a machine tool measuring device according to claim 7, wherein the reading head is provided on a side of the blade opposite to the positioning projection.

9. The mounting structure of a machine tool measuring device according to claim 1, wherein a slide rail assembly is provided between the driven member and the mounting table.

10. A numerically controlled machine tool comprising a mounting structure according to any one of claims 1 to 9.