WO2020103712A1

WO2020103712A1 - Assembling method for guide rails of linear motor module

Info

Publication number: WO2020103712A1
Application number: PCT/CN2019/116947
Authority: WO
Inventors: 李伟; 刘元江; 陈志�; 欧文科
Original assignee: 歌尔股份有限公司
Priority date: 2018-11-20
Filing date: 2019-11-11
Publication date: 2020-05-28
Also published as: CN109327127A; CN109327127B

Abstract

An assembling method for guide rails of a linear motor module, the method comprising: machining bases by means of segmentation, next assembling two bases, then mounting a guide rail on each base, and finally adjusting the degree of parallelism of each guide rail one by one to achieve a range of precision. The described method effectively solves the problems in the prior art in which the stroke of a single base is too short, machining difficulties easily occur due to the fabrication of the bases being too long, and machining precision is difficult to guarantee.

Description

Method for assembling guide rail of linear motor module

Technical field

The invention relates to the technical field of linear motors, and more particularly, to a method for assembling guide rails of linear motor modules.

Background technique

At present, the stroke of the linear motor module in the industry is usually less than 4 meters. If the stroke of the mover increases, the length of the base needs to be increased accordingly. And the base is too long, it is easy to cause processing difficulties. For example, the length of the base exceeds the processing size of the milling machine, and the processing accuracy is difficult to guarantee.

Generally, long-stroke linear motors need to be spliced together using multiple sets of guide rails. However, the parallelism of the guide rails during the splicing process is difficult to meet the requirements.

In view of this, a new technical solution needs to be provided to solve the above technical problems.

Summary of the invention

An object of the present invention is to provide a new technical solution for a method of assembling guide rails of a linear motor module.

According to a first aspect of the present invention, a method for assembling guide rails of a linear motor module is provided. The linear motor module includes a first guide rail device and a second guide rail device. Each of the guide rail devices includes a base and a Two guide rails on the base, the base includes a positioning surface, the first guide rail device includes a first base, a first guide rail and a third guide rail, and the second guide rail device includes a second base, a second guide rail and a fourth guide rail , Including the following steps:

S1, stitching together the first base and the second base along the length direction;

S2. The first guide rail is pre-installed on the first base, and a measurement device is slidingly connected to the first guide rail. The measurement device includes an arm portion and a probe provided on the arm portion. The probe is against the positioning surface of the first base, and the measuring device is slid to adjust the parallelism of the first guide rail, and then the first guide rail is fastened;

S3. Pre-assemble the third guide rail to the first base, press the probe against the side of the third guide rail, and slide the measuring device to adjust the parallelism of the third guide rail, and Tighten the third rail;

S4. The fourth guide rail is pre-installed on the second base, the fourth guide rail is spliced with the third guide rail, the probe is pressed against the side of the third guide rail, and the measurement is slid A device to slide the probe from the side of the third guide rail to the side of the fourth guide rail to adjust the parallelism of the fourth guide rail, and then fasten the fourth guide rail;

S5. The second guide rail is pre-installed on the second base, the second guide rail is spliced with the first guide rail, the measurement device and the third guide rail are slidingly connected, and the probe is connected with The sides of the first guide rail are pressed against each other, and the measuring device is slid to slide the probe from the side of the first guide rail to the side of the second guide rail to adjust the parallelism of the second guide rail, and then tightened Describe the second rail.

Optionally, the measuring device is slidingly connected to the first guide rail or the third guide rail through a slider.

Optionally, the measuring device includes a magnetic dial base and a dial indicator. The magnetic dial base is attracted to the slider. The dial indicator is connected to the magnetic dial base through the arm. The dial indicator has the probe.

Optionally, in step S1, the flatness of the rail mounting surface of the first base and the rail mounting surface of the second base is less than or equal to 0.02 mm.

Optionally, the first base and the second base are positioned by positioning pins, and are connected by connecting blocks provided on the sides of the first base and the second base.

Optionally, the positioning surface is a mounting surface of the magnetic scale of the first base.

Optionally, the flatness of the positioning surface is less than or equal to 0.02 mm.

Optionally, the first rail and the positioning surface, the third rail and the first rail, the fourth rail and the third rail, and the second rail and the first rail The parallelism of at least one of them is less than or equal to 0.01 mm.

Optionally, ends of the first rail and the third rail near the second base are misaligned, and ends of the second rail and the fourth rail near the first base are misaligned.

Optionally, the linear motor module further includes a yoke, and at least a portion of the yoke overlaps the first base and the second base.

In the method for assembling the guide rails of the linear motor module of the present invention, the bases are processed in sections, and then the two bases are spliced, then the guide rails are installed on each base, and finally the parallelism of each guide rail is adjusted one by one to achieve the accuracy range; The method effectively solves the problems in the prior art that the stroke of a single base is too short, and the manufacturing of the base is too long, it is easy to cause processing difficulties and it is difficult to guarantee the processing accuracy.

Other features and advantages of the present invention will become clear by the following detailed description of exemplary embodiments of the present invention with reference to the drawings.

BRIEF DESCRIPTION

The drawings incorporated in and forming a part of the specification illustrate embodiments of the present invention, and together with the description serve to explain the principles of the present invention.

1 is an exploded schematic view of the method for assembling the guide rail of the linear motor module of the present invention before the guide rail is assembled;

2 is a schematic view of the overall structure of the linear motor module rail assembly method of the present invention after the rail assembly;

3 is a schematic view of the installation of the measuring device in the method of assembling the guide rail of the linear motor module of the present invention.

detailed description

Various exemplary embodiments of the present invention will now be described in detail with reference to the drawings. It should be noted that the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is actually merely illustrative, and in no way serves as any limitation on the invention and its application or use.

Techniques, methods and equipment known to those of ordinary skill in the related art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the specification.

In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiment may have different values.

It should be noted that similar reference numerals and letters indicate similar items in the following drawings, so once an item is defined in one drawing, there is no need to discuss it further in subsequent drawings.

According to an embodiment of the present invention, a method for assembling guide rails of a linear motor module is provided. As shown in FIGS. 1-3, the linear motor module includes a first guide rail device and a second guide rail device, each of the guide rail devices includes a base and two guide rails disposed on the base, the base includes positioning In general, the first rail device includes a first base 1, a first rail 11, and a third rail 12, and the second rail device includes a second base 2, a second rail 21, and a fourth rail 22. The positioning surface is usually a surface that has been finished. The flatness of the positioning surface is high. For example, the flatness is less than or equal to 0.02 mm. The stitching method includes the following steps:

S1, stitching together the first base 1 and the second base 2 along the length direction;

S2. The first guide rail 11 is pre-installed on the first base 1. The pre-installation refers to installing screws on the first guide rail 11 and not tightening the screws, with only a little force. OK; the measurement device is slidingly connected to the first guide rail 11, the measurement device includes an arm portion and a probe provided on the arm portion, and the probe is positioned against the positioning surface of the first base 1, and Slide the measuring device to adjust the parallelism of the first guide rail 11 and then fasten the first guide rail 11;

S3. The third guide rail 12 is pre-installed on the first base 1, the pre-installation refers to installing screws on the third guide rail 12 and not tightening the screws, with only a little force Yes; the probe is pressed against the side of the third rail 12, and the measuring device is slid to adjust the parallelism of the third rail 12, and then the third rail 12 is fastened;

S4. The fourth guide rail 22 is pre-installed on the second base 2. The pre-installation refers to installing screws on the fourth guide rail 22 and not tightening the screws, with only a little force. Yes; the fourth guide rail 22 and the third guide rail 12 are spliced, the probe is pressed against the side of the third guide rail 12, and the measuring device is slid to make the probe from the third guide rail 12 Sliding the side of the fourth rail 22 to adjust the parallelism of the fourth rail 22, and then tighten the fourth rail 22;

S5. The second guide rail 21 is pre-installed on the second base 2, the pre-installation refers to installing screws on the second guide rail 21 and not tightening the screws, with only a little force Yes; the second guide rail 21 is spliced with the first guide rail 11, the measuring device is slidingly connected to the third guide rail 12, the probe is pressed against the side of the first guide rail 11 and slides The measuring device slides the probe from the side of the first rail 11 to the side of the second rail 21 to adjust the parallelism of the second rail 21, and then tightens the second rail 21.

In this example, first, the flatness of the first guide rail 11 is adjusted on the basis of the positioning surface. Then, the parallelism of the third rail 12, the fourth rail 22 and the first rail 11 is adjusted with the first rail 11 as the reference, so as to ensure that the third rail 12 and the fourth rail 22 are parallel to the first rail 11. Next, the parallelism of the second rail 21 is adjusted based on the third rail 12 to ensure that the first rail 11, the second rail 21 and the third rail 12 are parallel. By this method, the first rail 11 and the second rail 21 spliced together and the third rail 12 and the fourth rail 22 spliced together are parallel to each other.

Further, the measuring device is slidingly connected to the first guide rail 11 or the third guide rail 12 through a slider. For example, a first slider 5 is provided on the first rail 11, and a second slider 8 is provided on the third rail 12.

Further, the measurement device includes a magnetic dial base 6 and a dial indicator 7, the magnetic dial base 6 is attracted to the first slider 5 or the second slider 8, the dial indicator 7 passes The arm portion is connected to the magnetic dial base 6, and the dial indicator 7 has the probe. The magnetic watch base 6 is magnetic. The slider is made of iron, ferrite, cobalt and other materials. The magnetic watch base 6 can be attracted to the slider. The magnetic watch base 6 is common knowledge in the art and will not be described in detail here.

Further, in step S1, the flatness of the rail mounting surface of the first base 1 and the rail mounting surface of the second base 2 is less than or equal to 0.02 mm. Within this range, the flatness layer of the guide rail can be ensured, thereby ensuring the smooth operation of the linear motor.

Further, the first base 1 and the second base 2 are positioned by positioning pins, and connected by a connecting block 3 provided on the side of the first base 1 and the second base 2. For example, the positioning pins are installed at the connected end surfaces of the first base 1 and the second base 2. The use of the positioning pin can ensure the accuracy of the splicing between the first base 1 and the second base 2 to avoid errors such as misalignment; after the first base 1 and the second base 2 are accurately butted through the positioning pin, the A connection block 3 is installed at the connection gap between the base 1 and the second base 2 to ensure the tightness of the connection between the first base 1 and the second base 2 and prevent loosening and disconnection.

Further, the positioning surface is a magnetic scale mounting surface 13 of the first base 1; the flatness of the positioning surface is less than or equal to 0.02 mm. The magnetic scale mounting surface 13 is used to install the magnetic scale. The flatness range can ensure the flatness of the first guide rail 11 installation.

Further, the first guide rail 11 and the positioning surface, the third guide rail 12 and the first guide rail 11, the fourth guide rail 22 and the third guide rail 12, and the second guide rail 21 and The parallelism of at least one of the first guide rails 11 is less than or equal to 0.01 mm. Within this range, the two sets of guide rails spliced together can be guaranteed to be parallel to each other, thereby ensuring the smooth operation of the linear motor.

Further, the ends of the first guide rail 11 and the third guide rail 12 that are close to the second base 2 are offset, and the ends of the second guide rail 21 and the fourth guide rail 22 that are close to the first base 1 One end is misaligned. Specifically, the first guide rail 11 and the fourth guide rail 22 both cross the splicing line of the first base 1 and the second base 2. As shown in FIG. 2, a is a rail splicing line and b is a base splicing line. The dislocation arrangement means that the two guide rail devices are connected through the guide rails, for example, the first guide rail 11 and the fourth guide rail 22 in addition to the connection plate 3. In this way, the connection points of the two guide rail devices are increased, and the connection strength is improved.

Further, the linear motor module further includes a yoke 4, and at least a portion of the yoke 4 overlaps the first base 1 and the second base 2. For example, as shown in FIGS. 1-2, the yoke 4 is a plurality of block-shaped structures provided separately. One side of one block structure is fixed on the first base 1 and the other side is fixed on the second base 2. The block structure connects the first base 1 and the second base 2 together, thereby improving the connection strength of the two guide rail devices.

Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the invention is defined by the appended claims.

Claims

A method for assembling guide rails of a linear motor module. The linear motor module includes a first guide rail device and a second guide rail device. Each of the guide rail devices includes a base and two guide rails provided on the base. The base includes a positioning surface, the first rail device includes a first base, a first rail, and a third rail, and the second rail device includes a second base, a second rail, and a fourth rail, which is characterized by the following steps:

S1, stitching together the first base and the second base along the length direction;

S2. The first guide rail is pre-installed on the first base, and a measurement device is slidingly connected to the first guide rail. The measurement device includes an arm portion and a probe provided on the arm portion. The probe is against the positioning surface of the first base, and the measuring device is slid to adjust the parallelism of the first guide rail, and then the first guide rail is fastened;

S3. Pre-assemble the third guide rail to the first base, press the probe against the side of the third guide rail, and slide the measuring device to adjust the parallelism of the third guide rail, and Tighten the third rail;

S4. The fourth guide rail is pre-installed on the second base, the fourth guide rail is spliced with the third guide rail, the probe is pressed against the side of the third guide rail, and the measurement is slid A device to slide the probe from the side of the third guide rail to the side of the fourth guide rail to adjust the parallelism of the fourth guide rail, and then fasten the fourth guide rail;

S5. The second guide rail is pre-installed on the second base, the second guide rail is spliced with the first guide rail, the measurement device and the third guide rail are slidingly connected, and the probe is connected with The sides of the first guide rail are pressed against each other, and the measuring device is slid to slide the probe from the side of the first guide rail to the side of the second guide rail to adjust the parallelism of the second guide rail, and then tightened Describe the second rail.
The assembling method according to claim 1, wherein the measuring device is slidingly connected to the first guide rail or the third guide rail via a slider.
The assembling method according to claim 2, wherein the measuring device includes a magnetic dial base and a dial indicator, the magnetic dial base is attracted to the slider, and the dial indicator passes through the arm Is connected to the magnetic dial base, and the dial indicator has the probe.
The assembling method according to claim 1, wherein in step S1, the flatness of the rail mounting surface of the first base and the rail mounting surface of the second base is less than or equal to 0.02 mm.
The assembling method according to claim 1, characterized in that the first base and the second base are positioned by positioning pins and are provided on the side portions of the first base and the second base Connect the blocks to connect.
The assembling method according to claim 1, wherein the positioning surface is a mounting surface of the magnetic scale of the first base.
The assembling method according to claim 1, wherein the flatness of the positioning surface is less than or equal to 0.02 mm.
The assembling method according to claim 1, wherein the first guide rail and the positioning surface, the third guide rail and the first guide rail, the fourth guide rail and the third guide rail, and all The parallelism of at least one of the second guide rail and the first guide rail is less than or equal to 0.01 mm.
The assembling method according to claim 1, wherein the ends of the first guide rail and the third guide rail close to the second base are misaligned, and the close proximity of the second guide rail and the fourth guide rail One end of the first base is misaligned.
The assembling method according to claim 1, wherein the linear motor module further includes a yoke, wherein at least a portion of the yoke overlaps the first base and the second base.