A method for assembling guide rail steel bars for linear modules

Abstract

The present invention discloses a method for assembling guide rail steel bars for linear modules, comprising the steps of S1: forming a mounting groove with a trapezoidal longitudinal section on the inner wall of the guide rail profile, S2: inserting the trapezoidal guide rail steel bar into the mounting groove from the end of the mounting groove, S3: using a jig to press the upper portion of the mounting groove opening on the inner wall of the guide rail profile to deform it, S4: the deformed portion of the upper portion of the mounting groove opening presses the guide rail steel bar into the mounting groove, and S5: grinding the surface of the guide rail steel bar. The assembly method of the present invention reduces the secondary processing steps of the mounting groove, and also reduces the steps of fixing the guide rail steel bar in the mounting groove with glue, which can improve the assembly efficiency of the guide rail steel bar and the guide rail profile, thereby improving the overall assembly efficiency of the linear module, and can also ensure the accuracy of the linear motion of the slide of the linear module. The assembly method of the present invention has simple steps and high assembly efficiency, and is suitable for large-scale promotion.

Description

Technical Field

[0001] The present invention relates to the field of linear modules, and in particular to an assembling method of guide rail steel bars for linear modules. Background Art

[0002] In linear modules, the coordination of the steel balls on both sides of the slide and the guide rail profile is one of the core structures that achieves high-precision, low-friction motion of the slide. This coordination converts the sliding friction between the slide and the guide rail profile into rolling friction through the rolling of the steel balls in the raceways on the inner wall of the guide rail profile, thereby significantly improving motion efficiency, precision and stability.

[0003] In order to meet the core requirements of linear modules for wear resistance, precision and rigidity, grooves are processed on the inner wall of the guide rail profile, and guide rail steel bars are installed in the grooves. The guide rail steel bars are usually bar-shaped components made of high-carbon chromium bearing steel or alloy structural steel. The surface is quenched and hardened and precision ground, and has extremely high wear resistance, rigidity and dimensional accuracy. The guide rail steel bars can replace the contact surface of the guide rail profile itself and serve as the rolling track for the steel balls on both sides of the slide.

[0004] The existing guide rail profiles used for linear modules have a square longitudinal section of the groove on the inner wall of the guide rail profile when the material is received, and the longitudinal section of the guide rail steel bar is also square. In order to ensure that the guide rail steel bar can be installed more firmly in the groove, the actual size of the groove (the width and depth of the groove opening) is usually processed smaller than the design value when the guide rail profile is received, and is usually smaller than the size of the guide rail steel bar. It is necessary to use a CNC machine tool to perform secondary processing on the two side walls and bottom surfaces of the groove according to the size of the guide rail steel bar, so that the size of the groove is larger than the size of the guide rail steel bar and the size difference is controlled within Within a certain accuracy, glue is then used to fix the guide rail steel bar in the groove. If the actual size of the groove is larger than the size of the guide rail steel bar when the guide rail profile is incoming, although secondary processing is not required, if the size of the groove is at the maximum deviation and the size of the guide rail steel bar is at the minimum deviation, after the guide rail steel bar is fixed in the groove with glue, the guide rail steel bar may become loose in the groove when the surface of the guide rail steel bar is subsequently ground, thereby affecting the matching accuracy between the guide rail steel bar and the steel ball on the slide. Therefore, when the guide rail profile is incoming, the actual size of the groove will be processed to be smaller than the size of the guide rail steel bar.

[0005] The existing method of assembling guide rail steel bars and guide rail profiles first requires secondary processing of the incoming guide rail profiles, and then glue is used to fix the guide rail steel bars in the grooves on the inner wall of the guide rail profiles. Not only is the secondary processing making the assembly process cumbersome, but the use of glue to fix the guide rail steel bars can easily cause the guide rail steel bars to loosen during the grinding process, affecting the accuracy of the linear motion of the slide. Summary of the Invention

[0006] The object of the present invention is to provide a method for assembling guide rail steel bars for a linear module to solve at least one of the above technical problems.

[0007] The present invention provides a method for assembling guide rail steel bars for a linear module, comprising the following steps:

[0008] S1: Forming a mounting groove with a trapezoidal longitudinal section on the inner wall of the guide rail profile, wherein the opening of the mounting groove serves as the upper bottom, the longitudinal sidewall of the mounting groove serves as the lower bottom, and the width of the opening of the mounting groove is smaller than the width of the longitudinal sidewall of the mounting groove;

[0009] S2: Insert the trapezoidal guide rail steel bar into the installation slot from the end of the installation slot;

[0010] S3: Use a jig to press the upper portion of the installation slot opening on the inner wall of the guide rail profile to deform it;

[0011] S4: The deformed portion of the upper portion of the installation slot presses the guide rail steel bar into the installation slot;

[0012] S5: Grinding the surface of the guide rail steel bar.

[0013] Preferably, in step S1 , there are two mounting grooves, which are respectively located on two side walls of the guide rail profile and whose openings face each other.

[0014] Therefore, two guide steel bars are installed in the two mounting grooves respectively, and the steel balls on both sides of the slide of the linear module roll on the guide steel bars in the mounting grooves on the two side walls of the guide profile respectively, ensuring the smoothness of the linear motion of the slide.

[0015] Preferably, in step S2, two trapezoidal guide rail steel bars are respectively inserted into the installation grooves from the ends of the two installation grooves.

[0016] Therefore, the steel balls on both sides of the slide of the linear module roll on the two guide steel bars respectively to ensure the smooth linear motion of the slide.

[0017] Preferably, in step S1, the mounting grooves are arranged along the length direction of the guide rail profile.

[0018] Therefore, guide rail steel bars are installed in the installation groove, and the guide rail steel bars are arranged along the length direction of the guide rail profile. The steel balls on the slide of the linear module roll on the guide rail steel bars, and the slide can slide smoothly along the length direction of the guide rail profile.

[0019] Preferably, in step S1 , the longitudinal section of the installation groove is in the shape of an isosceles trapezoid.

[0020] Therefore, the mounting groove having an isosceles trapezoidal longitudinal section is convenient for processing and forming.

[0021] Preferably, in step S2, an arc-shaped groove for accommodating the steel balls on the slide of the linear module is formed on the surface of the guide rail steel bar facing the inner cavity of the guide rail profile.

[0022] Therefore, the arc-shaped groove on the guide rail steel bar is used to accommodate the steel balls on the slide, ensuring that the steel balls roll smoothly along the length direction of the guide rail steel bar and are not easy to fall out.

[0023] Preferably, in step S2, the longitudinal section of the guide rail steel bar is trapezoidal, and the area of ​​the longitudinal section of the guide rail steel bar is smaller than the area of ​​the longitudinal section of the installation groove.

[0024] Therefore, it is ensured that the guide rail steel bar can be easily inserted into the mounting groove through the end of the mounting groove.

[0025] Preferably, in step S1, the corners on the inner wall of the guide rail profile located on both sides of the installation slot opening are in the shape of arc surfaces.

[0026] Therefore, the corners on both sides of the installation slot opening are in an arc shape, which can prevent the corners on both sides of the installation slot opening from cutting workers when grinding the surface of the guide rail steel bar.

[0027] Preferably, in step S3, the jig is U-shaped, and an extrusion protrusion is provided on one outer side wall of the jig. The outer side wall of the jig with the extrusion protrusion is inverted in the guide rail profile, and then the extrusion protrusion is pressed against the upper part of the mounting groove opening on the inner wall of the guide rail profile. An external stamping device is used to press the other side wall of the jig laterally to deform the upper part of the mounting groove opening.

[0028] Therefore, the outer side wall of the jig with the extrusion protrusion is inverted in the guide rail profile and the extrusion protrusion is pressed against the upper part of the installation groove opening, and then the other side wall of the jig is pressed laterally to deform the upper part of the installation groove opening, thereby pressing the guide rail steel bar tightly in the installation groove. The fixation of the guide rail steel bar in the installation groove is very simple, and after fixation, the guide rail steel bar will not easily loosen in the installation groove. The length of the jig can be less than the length of the guide rail profile, and the jig can be pressed on the upper part of the installation groove opening multiple times along the length direction of the guide rail profile.

[0029] Preferably, in step S3, a plurality of flat rollers arranged in a straight line are installed on both sides of the fixture;

[0030] On one side of the fixture, the size of the roller protruding from the side of the fixture tends to gradually decrease.

[0031] On the other side of the fixture, the size of the roller protruding from the side of the fixture tends to gradually decrease.

[0032] Press the two smallest rollers on both sides of the jig that protrude from the sides of the jig against the upper portions of the two mounting slot openings on the inner wall of the guide rail profile, and then move the jig from one end of the guide rail profile to the other end to deform the upper portions of the mounting slot openings; or

[0033] On one side of the jig, the roller protrudes from the same side of the jig.

[0034] On the other side of the fixture, the roller protrudes from the same side of the fixture.

[0035] The two sides of the fixture tend to converge.

[0036] The rollers on both sides of the end of the jig with the smallest longitudinal cross-sectional area are pressed against the upper parts of the two mounting slot openings on the inner wall of the guide rail profile, and the jig is moved from one end of the guide rail profile to the other end to deform the upper parts of the mounting slot openings.

[0037] Therefore, by pressing the rollers on both sides of one end of the jig against the upper parts of the two mounting groove openings respectively, and then moving the jig from one end of the guide rail profile to the other end, the upper part of the mounting groove opening can be deformed, thereby pressing the guide rail steel bar into the mounting groove. The fixation of the guide rail steel bar in the mounting groove is very simple, and after fixation, the guide rail steel bar will not easily loosen in the mounting groove. The size of the rollers on the side of the jig protruding from the side of the jig tends to gradually decrease, or the size of the rollers protruding from the side of the jig is the same and the two sides of the jig tend to converge, so that the jig can be easily and gradually inserted into the inner cavity of the guide rail profile, thereby ensuring that the upper part of the mounting groove opening is completely deformed to press the guide rail steel bar into the mounting groove.

[0038] The assembly method of the guide rail steel bars for the linear module of the present invention has the following advantages:

[0039] For incoming guide rail profiles, as long as the size of the mounting groove is larger than that of the guide rail steel bar, the guide rail steel bar can be inserted into the mounting groove. After receiving the material, there is no need to perform secondary processing on the mounting groove of the guide rail profile. The guide rail steel bar can be firmly pressed into the mounting groove by simply deforming the upper part of the mounting groove opening. When the guide rail steel bar is subsequently ground, the guide rail steel bar in the mounting groove will not easily loosen, ensuring the matching accuracy between the guide rail steel bar and the steel ball on the slide of the linear module;

[0040] The secondary processing steps of the installation groove are reduced, and the process of fixing the guide rail steel bars in the installation groove with glue is also reduced, which can improve the assembly efficiency of the guide rail steel bars and the guide rail profiles, thereby improving the overall assembly efficiency of the linear module, and can also ensure the accuracy of the linear motion of the linear module slide.

[0041] 3. The assembly method of the present invention has simple procedures and high assembly efficiency, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a flow chart of a method for assembling guide rail steel bars for a linear module according to the present invention;

[0043] Figure 2 This is a schematic structural diagram of the guide rail steel bar and guide rail profile assembled according to the present invention;

[0044] Figure 3 for Figure 2 The schematic diagram of the structure of the guide rail profile and the guide rail steel bar along the direction A shown;

[0045] Figure 4 for Figure 3 The structural diagram of the guide rail profile shown;

[0046] Figure 5 for Figure 3 The structural diagram of the guide rail steel bar shown;

[0047] Figure 6 To use a jig to press Figure 3 A schematic diagram of the upper portion of the mounting slot opening is shown;

[0048] Figure 7 To use another jig to press Figure 3 Schematic diagram of the upper portion of the mounting slot opening is shown. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0050] like Figure 1 As shown, a method for assembling a guide rail steel bar for a linear module includes the following steps:

[0051] S101, forming a mounting groove having a trapezoidal longitudinal cross-section on the inner wall of the guide rail profile, wherein the opening of the mounting groove serves as the upper base, and the longitudinal sidewalls of the mounting groove serve as the lower base, and the width of the opening of the mounting groove is smaller than the width of the longitudinal sidewalls of the mounting groove;

[0052] See Figures 2 to 4 The longitudinal section of the guide rail profile 1 is U-shaped as a whole, and mounting grooves 11 are formed on the inner walls of the two side walls of the guide rail profile 1. The longitudinal section of the mounting groove 11 is trapezoidal ( Figure 4As shown), the opening 111 of the mounting groove 11 serves as the upper bottom of the trapezoid, and the longitudinal side wall 112 of the mounting groove 11 serves as the lower bottom of the trapezoid. The width of the opening 111 of the mounting groove 11 is smaller than the width of the longitudinal side wall 112 of the mounting groove 11. The openings 111 of the two mounting grooves 11 are arranged opposite to each other. The two mounting grooves 11 are respectively used to install two guide rail steel bars 2. The steel balls on both sides of the slide of the linear module roll on the guide rail steel bars 2 in the mounting grooves 11 on the two side walls of the guide rail profile 1 to ensure the smoothness of the linear motion of the slide.

[0053] See Figure 2 , the mounting groove 11 is arranged along the length direction of the guide rail profile 1. After the guide rail steel bar 2 is installed in the mounting groove 11, the guide rail steel bar 2 is arranged along the length direction of the guide rail profile. The steel balls on the slide of the linear module roll on the guide rail steel bar 2, and the slide can slide smoothly along the length direction of the guide rail profile 1;

[0054] See Figure 4 In this embodiment, the longitudinal section of the mounting groove 11 is in the shape of an isosceles trapezoid, and the mounting groove 11 having an isosceles trapezoidal longitudinal section is convenient for processing and forming;

[0055] The corners on both sides of the opening 111 of the mounting groove 11 on the inner wall of the guide rail profile 1 are in an arc shape. Figure 3 and Figure 4 The first corner position 12 above the opening 111 of the installation groove 11 and the second corner position 13 below the opening 111 of the installation groove 11 are both arc-shaped, that is, chamfered. This arrangement can prevent the first corner position 12 and the second corner position 13 from cutting the operator when grinding the surface of the guide rail steel bar 2.

[0056] S102, inserting the trapezoidal guide rail steel bar into the installation slot from the end of the installation slot;

[0057] See Figure 5 The longitudinal section of the guide rail steel bar 2 is an isosceles trapezoidal shape that matches the mounting groove 11. The area of ​​the longitudinal section of the guide rail steel bar 2 is smaller than the area of ​​the longitudinal section of the mounting groove 11, ensuring that the two guide rail steel bars 2 can be easily inserted into the two mounting grooves 11 through the ends of the two mounting grooves 11 respectively;

[0058] See Figure 2 、 Figure 3 and Figure 5 An arc-shaped groove 21 is formed on the surface of the guide rail steel bar 2 facing the inner cavity of the guide rail profile 1. The arc-shaped groove 21 on the guide rail steel bar 2 is used to accommodate the steel balls on the slide of the linear module, ensuring that the steel balls roll smoothly along the length direction of the guide rail steel bar 2 and are not easy to fall out.

[0059] S103, using a jig to press the upper portion of the installation slot opening on the inner wall of the guide rail profile to deform it;

[0060] Example 1:

[0061] See Figure 6 In this embodiment, the fixture adopts the first fixture 3, the longitudinal section of the first fixture 3 is U-shaped, and an extrusion protrusion 31 is formed on the outer side wall of the right side of the first fixture 3. Figures 2 to 4 、 Figure 6 , the outer side wall of the first jig 3 with the extrusion protrusion 31 is inverted in the guide rail profile 1, and then the extrusion protrusion 31 is pressed against the upper part of the opening of the mounting groove 11 on the inner wall of the guide rail profile 1, that is, the extrusion protrusion 31 is pressed against the first corner 12, and an external stamping device is used to press the outer side wall of the left side of the first jig 3 horizontally in the direction F. The extrusion protrusion 31 can drive the upper part of the opening of the mounting groove 11, that is, the first corner 12, to deform;

[0062] See Figures 2 to 4 、 Figure 6 , the outer side wall of the first jig 3 with the extrusion protrusion 31 is buckled in the guide rail profile 1 and the extrusion protrusion 31 is pressed against the upper part of the opening of the installation groove 11, that is, the first corner position 12, and then the other side wall of the first jig 3 is pressed laterally to deform the upper part of the opening of the installation groove 11, that is, the first corner position 12, thereby pressing the guide rail steel bar 2 tightly into the installation groove 11. The fixation of the guide rail steel bar 2 in the installation groove 11 is very simple, and after fixation, the guide rail steel bar 2 will not easily loosen in the installation groove 11. The length of the first jig 3 can be smaller than the length of the guide rail profile 1. The first jig 3 can press the upper part of the opening of the installation groove 11, that is, the first corner position 12, multiple times in the same way along the length direction of the guide rail profile 1. The upper parts of the two installation grooves 11 openings on the inner wall of the guide rail profile 1 are both driven to deform in the same way by the extrusion protrusion 31 on the first jig 3;

[0063] Example 2:

[0064] See Figure 7In this embodiment, the jig adopts the second jig 4, and a plurality of flat rollers 41 are respectively installed on the left and right sides of the second jig 4. The plurality of rollers 41 on the left side of the second jig 4 are arranged in a straight line along the length direction of the guide rail profile 1, and the plurality of rollers 41 on the left side of the second jig 4 protrude from the left end face of the second jig 4 in a gradually decreasing size. The plurality of rollers 41 on the right side of the second jig 4 are arranged in a straight line along the length direction of the guide rail profile 1, and the plurality of rollers 41 on the right side of the second jig 4 protrude from the right end face of the second jig 4 in a gradually decreasing size. The two rollers 41 with the smallest size protruding from the side of the second jig 4 on both sides of the second jig 4 are respectively pressed against the upper part of the opening of the two mounting grooves 11 on the inner wall of the guide rail profile 1, that is, the first corner position 12, and then the second jig 4 is moved from one end of the guide rail profile 1 to the other end. The rollers 41 on both sides of the second jig 4 can drive the upper part of the opening of the mounting groove 11, that is, the first corner position 12 to deform. The distance from the outer periphery of the roller 41 on the left side of the second jig 4 to the outer periphery of the corresponding roller 41 on the right side of the second jig 4 is slightly larger than the distance between the upper parts of the openings of the two mounting grooves 11, that is, the distance between the two first corner positions 12;

[0065] See Figures 2 to 4 、 Figure 7 , the rollers 41 on both sides of one end of the second fixture 4 are respectively pressed against the upper part of the openings of the two mounting grooves 11 on the inner wall of the guide rail profile 1, that is, the first corner position 12, and the end with the smallest outer circumferential distance between the rollers 41 on both sides of the second fixture 4 is located at one end of the guide rail profile 1. Then, the second fixture 4 is moved from one end of the guide rail profile 1 to the other end (such as by an electric cylinder or a cylinder drive), and the rollers 41 on both sides of the second fixture 4 can deform the upper part of the openings of the two mounting grooves 11, that is, the first corner position 12, from The two guide rail steel bars 2 are respectively pressed into the two mounting grooves 11. The fixing of the guide rail steel bars 2 in the mounting grooves 11 is very simple. After being fixed, the guide rail steel bars 2 will not be easily loosened in the mounting grooves 11. The size of the rollers 41 on the side of the second jig 4 protruding from the side tends to gradually decrease, which makes it easier for the second jig 4 to be gradually and completely inserted into the inner cavity of the guide rail profile 1, thereby ensuring that the upper part of the opening of the mounting groove 11 is completely deformed to press the guide rail steel bars 2 into the mounting groove 11.

[0066] In other embodiments, the jig may also adopt a third jig, the two sides of the third jig tend to be retracted, and a plurality of flat rollers are respectively installed on the left and right sides of the third jig, and the plurality of rollers on the left side of the third jig are arranged in a straight line along the length direction of the guide rail profile 1, and the plurality of rollers on the right side of the third jig are arranged in a straight line along the length direction of the guide rail profile 1. The rollers on both sides of the end with the smallest longitudinal cross-sectional area of ​​the third jig are respectively pressed against the upper part of the opening of the two mounting grooves 11 on the inner wall of the guide rail profile 1, i.e., the first corner position 12, and the third jig is moved from one end of the guide rail profile 1 (such as By driving an electric cylinder or a pneumatic cylinder to the other end, the rollers on both sides of the third fixture can deform the upper part of the openings of the two mounting grooves 11, namely the first corner position 12, thereby pressing the two guide rail steel bars 2 in the two mounting grooves 11 respectively. The fixation of the guide rail steel bars 2 in the mounting grooves 11 is very simple, and after fixation, the guide rail steel bars 2 will not easily loosen in the mounting grooves 11. The two sides of the third fixture tend to converge, which can make the third fixture more easily and gradually inserted into the inner cavity of the guide rail profile 1, thereby ensuring that the upper part of the opening of the mounting groove 11 is completely deformed to press the guide rail steel bars 2 in the mounting groove 11.

[0067] S104, the deformed portion of the upper portion of the installation slot opening presses the guide rail steel bar into the installation slot;

[0068] See Figure 6 and Figure 7 The upper parts of the openings of the two deformed mounting grooves 11, namely the two first corner positions 12, can respectively press the two guide rail steel bars 2 into the two mounting grooves 11. The fixation of the guide rail steel bars 2 in the mounting grooves 11 is very simple, and after fixation, the guide rail steel bars 2 will not easily loosen in the mounting grooves 11.

[0069] S105, grinding the surface of the guide rail steel bar;

[0070] See Figure 2 and Figure 3 , grind the end face of the guide rail steel bar 2 facing the other guide rail steel bar 2 to ensure the matching accuracy between the ball bearings on the slide of the linear module and the guide rail steel bar 2.

[0071] See Figures 2 to 5The present invention also can realize the installation of the guide rail 2 of the guide rail profile 1, and the guide rail 2 can be inserted into the installation groove 11. After the guide rail 2 is installed, the guide rail profile 1 does not need to be processed again. As long as the upper part of the opening 111 of the installation groove 11, that is, the first corner 12, is deformed, the guide rail 2 can be firmly pressed into the installation groove 11. When the guide rail 2 is subsequently ground, the guide rail 2 in the installation groove 11 will not be easily loosened, ensuring the matching accuracy of the guide rail 2 and the steel ball on the slide of the linear module. The assembly method of the present invention reduces the secondary processing step of the installation groove 11, and also reduces the step of fixing the guide rail 2 in the installation groove 11 with glue, which can improve the assembly efficiency of the guide rail 2 and the guide rail profile 1, thereby improving the overall assembly efficiency of the linear module, and can also ensure the accuracy of the linear motion of the slide of the linear module. The assembly method of the present invention has simple process and high assembly efficiency, and is suitable for large-scale promotion.

[0072] The above description is only some embodiments of the present invention, which is intended to illustrate the technical means of the present invention and is not intended to limit the technical scope of the present invention. Those skilled in the art can make obvious improvements to the present invention in combination with existing common knowledge, which all fall within the scope of protection of the present invention.

Claims

1. A method for assembling a guide rail steel bar for a linear module, comprising the following steps: S1: Forming a mounting groove with a trapezoidal longitudinal cross-section on the inner wall of the guide rail profile, with the opening of the mounting groove serving as the upper base and the longitudinal sidewall of the mounting groove serving as the lower base. The width of the opening of the mounting groove is smaller than the width of the longitudinal sidewall of the mounting groove. There are two mounting grooves, one on each sidewall of the guide rail profile, and the openings of the two mounting grooves face each other. S2: Insert the trapezoidal guide rail steel bar into the installation slot from the end of the installation slot; S3: Use a jig to press the upper part of the installation slot opening on the inner wall of the guide rail profile to deform it. The jig is U-shaped, and an extrusion protrusion is provided on one outer side wall of the jig. The outer side wall of the jig with the extrusion protrusion is inverted in the guide rail profile, and then the extrusion protrusion is pressed against the upper part of the installation slot opening on the inner wall of the guide rail profile. An external stamping device is used to press the other side wall of the jig laterally to deform the upper part of the installation slot opening, or A plurality of flat rollers arranged in a straight line are installed on both sides of the fixture. On one side of the fixture, the size of the roller protruding from the side of the fixture tends to gradually decrease. On the other side of the fixture, the size of the roller protruding from the side of the fixture tends to gradually decrease. Press the two smallest rollers on both sides of the jig against the upper parts of the two mounting slot openings on the inner wall of the guide rail profile, and then move the jig from one end of the guide rail profile to the other end to deform the upper part of the mounting slot opening, or A plurality of flat rollers arranged in a straight line are installed on both sides of the fixture. On one side of the jig, the roller protrudes from the same side of the jig. On the other side of the fixture, the roller protrudes from the same side of the fixture. The two sides of the fixture tend to converge. Press the rollers on both sides of the end of the jig with the smallest longitudinal cross-sectional area against the upper portions of the two mounting slot openings on the inner wall of the guide rail profile, and move the jig from one end of the guide rail profile to the other end to deform the upper portions of the mounting slot openings; S4: The deformed portion of the upper portion of the installation slot presses the guide rail steel bar into the installation slot; S5: Grinding the surface of the guide rail steel bar.

2. The assembly method according to claim 1, wherein: In step S2, two trapezoidal guide rail steel bars are respectively inserted into the installation slots from the ends of the two installation slots.

3. The assembly method according to claim 1, wherein: In step S1, the installation grooves are arranged along the length direction of the guide rail profile.

4. The assembly method according to claim 1, wherein: In step S1 , the longitudinal section of the installation groove is in the shape of an isosceles trapezoid.

5. The assembly method according to claim 1, characterized in that: In step S2, an arc-shaped groove for accommodating the steel balls on the slide of the linear module is formed on the surface of the guide rail steel bar facing the inner cavity of the guide rail profile.

6. The assembly method according to claim 1, characterized in that: In step S2 , the longitudinal section of the guide rail steel bar is trapezoidal, and the area of ​​the longitudinal section of the guide rail steel bar is smaller than the area of ​​the longitudinal section of the installation groove.

7. The assembly method according to claim 1, characterized in that: In step S1, the corners on the inner wall of the guide rail profile located on both sides of the installation slot opening are in an arc shape.

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