Static pressure worm mother strip repairing method

Abstract

The invention provides a static pressure worm bar repairing method, and relates to the technical field of worm bar repairing, and the static pressure worm bar repairing method comprises the following steps: installing an unworn worm bar in a worm bar repairing mold, and bonding a plastic sheet in a static pressure cavity of the unworn worm bar to fill the static pressure cavity, a first release agent is sprayed on the surface of the tooth part of the unworn worm nut strip, and then a first coating is smeared; the worm for repairing is pressed on the first coating through a worm nut strip repairing mold, the first coating is dried, and a worm with a coating is obtained; mounting the to-be-repaired worm nut strip in the worm nut strip repairing mold, and smearing a second coating on the surface of the tooth part of the to-be-repaired worm nut strip; and a plastic sheet is bonded to the position, corresponding to the static pressure cavity, of the worm with the coating, a second release agent is sprayed to the worm with the coating, the worm with the coating is pressed on the second coating through the worm nut strip repairing mold, the second coating is dried, and the repaired worm nut strip is obtained. The repairing quality of the worm nut strip can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of worm nut repairing, and in particular to a static pressure worm nut repairing method. Background Art

[0002] The hydrostatic worm gear pair is one of the commonly used linear motion mechanisms in machine tools. It has the advantages of high precision, high load, and high stability. However, after long-term use, the coating of the worm gear is prone to wear, which affects the accuracy of the worm gear pair. Therefore, it needs to be repaired in time after the worm gear coating is worn.

[0003] In the related art, the static pressure worm strip repair method usually involves applying paint on the surface of the worm strip to repair the coating. However, this repair method makes it difficult to accurately control the thickness of the coating after repair, which will affect the quality of the worm strip repair. Summary of the invention

[0004] The problem solved by the invention is how to improve the repair quality of static pressure worm strips.

[0005] In order to solve the above problems, the present invention provides a method for repairing a static pressure worm nut.

[0006] The present invention provides a method for repairing a static pressure snail, comprising:

[0007] Installing an unworn worm gear in a worm gear repair mold, bonding a plastic sheet in the static pressure cavity of the unworn worm gear to fill the static pressure cavity, spraying a first release agent on the surface of the tooth portion of the unworn worm gear, and then applying a first coating;

[0008] Pressing the repair worm onto the first coating through the worm nut repair mold, drying the first coating to form a first coating on the repair worm, demoulding and separating the repair worm from the unworn worm nut to obtain a coated worm;

[0009] Installing the worm thread to be repaired in the worm thread repair mold, and applying a second coating on the surface of the tooth portion of the worm thread to be repaired;

[0010] The plastic sheet is bonded to a position of the coated worm corresponding to the static pressure chamber, a second release agent is sprayed on the coated worm, the coated worm is pressed onto the second coating through the worm nut repairing mold, the second coating is dried to form a second coating on the worm nut to be repaired, the mold is removed and the coated worm is separated from the worm nut to be repaired to obtain a repaired worm nut.

[0011] Optionally, before installing the worm bar to be repaired in the worm bar repair mold and applying a second coating on the surface of the tooth portion of the worm bar to be repaired, the method further comprises:

[0012] The damaged coating of the worm matrix to be repaired is completely removed, and then the worm matrix is ​​cleaned and dried.

[0013] Optionally, the side wall of the repair worm includes a connected positioning plane and a profiling cylinder, and the profiling cylinder is formed with a plurality of profiling teeth arranged in sequence along the axial direction of the repair worm, and the profiling teeth are adapted to the tooth groove shape of the unworn worm bar.

[0014] Optionally, a tooth side surface of the profiling tooth is provided with a groove extending along an extension direction of the profiling tooth.

[0015] Optionally, the mold for repairing the worm strip includes a base, a worm strip fixing assembly and a worm mounting assembly, the upper end of the base is provided with a mounting groove for accommodating the worm strip, the worm strip fixing assembly is used to fasten the worm strip in the mounting groove, the worm mounting assembly is arranged on the base, the worm mounting assembly is used for installing the worm, the worm strip is the unworn worm strip or the worm strip to be repaired, and the worm is the repair worm or the coated worm.

[0016] Optionally, two worm mounting assemblies are provided, and the two worm mounting assemblies are respectively located at the two ends of the mounting groove. The worm mounting assembly includes a support mounted on the upper end of the base and an upper cover detachably mounted on the upper end of the support, and the upper cover and the support jointly define a mounting hole for mounting the shaft end of the worm.

[0017] Optionally, the upper cover is provided with clamping bolts arranged up and down, and the lower ends of the clamping bolts are used to tighten the shaft ends of the worm to fasten the worm in the mounting hole.

[0018] Optionally, a notch is formed on the profiling tooth, and the worm nut repairing mold further comprises a limiting plate, and the limiting plate is used to penetrate through the notches of a plurality of the profiling teeth at the same time.

[0019] Optionally, a positioning hole is provided on the positioning plane, and the mold for repairing the worm nut also includes a worm positioning assembly, and the worm positioning assembly includes two columns and a positioning beam, the two columns are installed on the upper end of the base and are located on both sides of the mounting groove, and the two ends of the positioning beam are respectively detachably connected to the upper ends of the two columns, and the positioning beam is provided with positioning bolts arranged up and down, and the positioning bolts are used to cooperate with the positioning holes for positioning.

[0020] Optionally, the worm bar fixing assembly includes a pressure block, a first tightening bolt and a second tightening bolt, the pressure block is detachably mounted on the upper end of the base, one end of the pressure block is exposed above the mounting groove, one end of the pressure block is used to tighten the top surface of the worm bar, the first tightening bolt is horizontally penetrated through the groove wall of the mounting groove, the end of the first tightening bolt extending into the mounting groove is used to tighten the side surface of the worm bar, the second tightening bolt is horizontally penetrated through the support, and the end of the second tightening bolt facing the middle of the mounting groove is used to tighten the end surface of the worm bar.

[0021] The beneficial effects of the static pressure worm repair method of the present invention are as follows: by spraying a first release agent on the tooth surface of the unworn worm, then applying a first coating, and then pressing the repair worm onto the first coating through a worm repair mold, and finally drying the first coating, so that the first coating can adhere to the repair worm and form a first coating on the surface of the repair worm to obtain a coated worm; by applying a second coating on the tooth surface of the worm to be repaired, and then spraying a second release agent on the coated worm, and then pressing the coated worm onto the second coating through a worm repair mold, and finally drying the second coating, so that the second coating can adhere to the worm to be repaired and form a second coating on the tooth surface of the worm to be repaired to obtain a repaired worm, thereby replicating the coating of the unworn worm to the worm to be repaired, which is beneficial to ensuring the coating thickness of the repaired worm and can improve the repair quality of the worm. In addition, the use of two plastic sheets can prevent paint from entering the static pressure cavity, ensure the static pressure cavity area of ​​the worm bar after repair, and further improve the repair quality of the worm bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of step S1 of the method for repairing a static pressure snail nut according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of step S2 of the static pressure snail nut repair method according to an embodiment of the present invention;

[0024] Figure 3 Schematic diagram of step S3 of the static pressure snail nut repairing method according to an embodiment of the present invention;

[0025] Figure 4 Schematic diagram of step S4 of the static pressure snail nut repair method according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of an unworn worm strip according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of a repair worm according to an embodiment of the present invention;

[0028] Figure 7 for Figure 6 An enlarged schematic diagram of the repair worm part A;

[0029] Figure 8 It is a schematic diagram of installing an unworn worm gear and a repair worm in a worm gear repair mold according to an embodiment of the present invention;

[0030] Fig. 9 It is a schematic diagram of the exploded structure of the mold for repairing the snail nut according to an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1. Mold for repairing worm nut; 11. Base; 111. Mounting groove; 12. Fixing assembly of worm nut; 121. Pressure block; 122. First jacking bolt; 123. Second jacking bolt; 13. Worm mounting assembly; 131. Support; 132. Upper cover; 1321. Clamping bolt; 14. Limiting plate; 15. Worm positioning assembly; 151. Vertical column; 152. Positioning beam; 1521. Positioning bolt; 2. Unworn worm nut; 21. Static pressure chamber; 22. First coating; 3. Worm nut to be repaired; 31. Second coating; 4. Worm nut after repair; 41. Second coating; 5. Repairing worm; 51. Positioning plane; 511. Positioning hole; 52. Profiled tooth; 521. Groove; 522. Notch; 6. Coated worm; 61. First coating; 7. Plastic sheet. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0034] The Z axis in the drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis represents the top, and the reverse direction of the Z axis represents the bottom; the X axis in the drawings represents the horizontal direction, and is designated as the front and back position, and the positive direction of the X axis represents the front side, and the reverse direction of the X axis represents the back side; the Y axis in the drawings represents the left and right position, and the positive direction of the Y axis represents the left side, and the reverse direction of the Y axis represents the right side. It should also be noted that the aforementioned Z axis, Y axis, and X axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0036] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0037] The present invention provides a method for repairing a static pressure worm nut to improve the repair quality of the static pressure worm nut, which is described in detail below in conjunction with specific embodiments.

[0038] like Figures 1 to 4 As shown, the present invention provides a method for repairing a static pressure snail, comprising:

[0039] Step S1: Install an unworn worm bar 2 in a worm bar repair mold 1, adhere a plastic sheet 7 into the static pressure cavity 21 of the unworn worm bar 2 to fill the static pressure cavity 21, spray a first release agent on the tooth surface of the unworn worm bar 2, and then apply a first coating 22.

[0040] Step S2: Press the repair worm 5 onto the first coating 22 through the worm nut repair mold 1, dry the first coating 22 to form a first coating 61 on the repair worm 5, demold and separate the repair worm 5 from the unworn worm nut 2 to obtain a coated worm 6.

[0041] Step S3: installing the worm nut 3 to be repaired in the worm nut repair mold 1, and applying a second coating 31 on the surface of the tooth portion of the worm nut 3 to be repaired.

[0042] Step S4: bonding the plastic sheet 7 to the position of the coated worm 6 corresponding to the static pressure chamber 21, spraying a second release agent on the coated worm 6, pressing the coated worm 6 onto the second coating 31 through the worm nut repair mold 1, drying the second coating 31 to form a second coating 41 on the worm nut 3 to be repaired, demolding and separating the coated worm 6 from the worm nut 3 to be repaired, and obtaining a repaired worm nut 4.

[0043] Specifically, the schematic diagram after applying the first coating 22 on the unworn worm strip 2 can be referred to as Figure 1 The schematic diagram of forming the first coating 61 on the repair worm 5 after the first coating 22 is dried can be referred to Figure 2 The schematic diagram after applying the second coating 31 on the worm nut 3 to be repaired can be referred to Figure 3 The schematic diagram of forming the second coating 41 on the worm 3 to be repaired after the second coating 31 is dried can be referred to Figure 4 .

[0044] It should be noted that the unworn worm gear strip 2 refers to a normal worm gear strip whose coating is not worn. The tooth side of a normal worm gear strip usually has a static pressure cavity 21 (see Figure 5 ), the static pressure chamber 21 is formed by partially not setting a coating on the tooth side surface of the worm bar, and is usually a groove-shaped structure extending along the extension direction of the tooth portion of the worm bar. In addition, the plastic sheet 7 can be adapted to the shape of the static pressure chamber 21 so as to just fill the static pressure chamber 21. It should be noted that the tooth surface includes the tooth side surface, tooth top surface and tooth groove bottom surface of the worm bar.

[0045] In addition, the first coating 22 and the second coating 31 are generally more than the actually required amount, so the coating will overflow after compaction, and the overflowed coating can be removed to ensure the coating quality.

[0046] In this embodiment, the first release agent is sprayed on the surface of the tooth portion of the unworn worm nut 2, and then the first coating 22 is applied. Then, the repair worm 5 is pressed onto the first coating 22 through the worm nut repair mold 1, and finally the first coating 22 is dried. In this way, the first coating 22 can be attached to the repair worm 5 to form a first coating 61 on the surface of the repair worm 5, thereby obtaining a coated worm 6. The second coating 31 is applied on the surface of the tooth portion of the worm nut 3 to be repaired, and then the second coating 31 is applied on the surface of the coated worm 5. 6, and then the coated worm 6 is pressed onto the second coating 31 through the worm nut repair mold 1, and finally the second coating 31 is dried, so that the second coating 31 can be attached to the worm nut 3 to be repaired and the second coating 41 is formed on the surface of the tooth portion of the worm nut 3 to be repaired, and the repaired worm nut 4 is obtained, thereby copying the coating of the unworn worm nut 2 to the worm nut 3 to be repaired, which is conducive to ensuring the coating thickness of the repaired worm nut 4 and improving the repair quality of the worm nut. In addition, the use of the plastic sheet 7 twice can prevent the coating from entering the static pressure chamber 21, ensure the static pressure chamber 21 area of ​​the repaired worm nut 4, and further improve the repair quality of the worm nut.

[0047] Optionally, before installing the worm bar 3 to be repaired in the worm bar repair mold 1 and applying the second coating 31 on the tooth surface of the worm bar 3 to be repaired, it also includes: removing all damaged coatings of the worm bar 3 to be repaired, then cleaning it, and then drying it.

[0048] Specifically, a dedicated cleaning agent may be used for cleaning.

[0049] In this optional embodiment, it can be understood that when the coating of the worm strip is damaged, it is possible that only part of the coating of the worm strip is damaged, and the local coating usually does not fall off completely. At this time, if the paint is applied directly to the damaged part of the coating, it may be difficult to ensure the adhesion of the paint to the worm strip. However, the present solution can clean the coating that has not fallen off at the damaged part by removing all the damaged coating before applying the second coating 31, thereby ensuring the adhesion of the subsequent second coating 31 to the worm strip, thereby improving the coating quality of the repaired worm strip.

[0050] Alternatively, if Figure 6 As shown, the side wall of the repair worm 5 includes a connected positioning plane 51 and a contoured cylinder, on which a plurality of contoured teeth 52 are sequentially arranged along the axial direction of the repair worm 5, and the contoured teeth 52 are adapted to the tooth groove shape of the unworn worm bar 2.

[0051] Specifically, the length of the repair worm 5 may be twice the length of the worm bar 3 to be repaired, so that a single repair worm 5 can repair two worm bars 3 to be repaired at the same time, thereby improving the repair efficiency.

[0052] In this optional embodiment, the positioning plane 51 can help the worm to be positioned in the worm mother bar repair mold 1, so as to ensure the consistency of the position of the repair worm 5 on the worm mother bar repair mold 1 and the position of the coated worm 6 on the worm mother bar repair mold 1, so as to avoid the position difference of the worm installed twice and affect the coating quality after the worm mother bar is repaired. In addition, the profiling tooth 52 can be inserted into the tooth groove of the unworn worm mother bar 2, so that the surface of the profiling tooth 52 is close to the tooth surface of the unworn worm mother bar 2, which is conducive to reducing the amount of the first coating 22.

[0053] Alternatively, if Figure 7 As shown, the tooth side surface of the profiling tooth 52 is provided with a groove 521 extending along the extending direction of the profiling tooth 52 .

[0054] Specifically, a plurality of grooves 521 may be provided. For example, in this embodiment, each tooth side surface of the contoured tooth 52 is provided with three grooves 521 , and the three grooves 521 are arranged in sequence along the radial direction of the repair worm 5 .

[0055] In this optional embodiment, the presence of the groove 521 can ensure that the contoured tooth 52 and the first coating 22 have good gripping properties, which helps to improve the adhesion effect of the coating on the worm.

[0056] Alternatively, if Figure 8 and Fig. 9 As shown, the worm strip repair mold 1 includes a base 11, a worm strip fixing assembly 12 and a worm mounting assembly 13. The upper end of the base 11 is provided with a mounting groove 111 for accommodating the worm strip. The worm strip fixing assembly 12 is used to fasten the worm strip in the mounting groove 111. The worm mounting assembly 13 is arranged on the base 11. The worm mounting assembly 13 is used for worm installation. The worm strip is the unworn worm strip 2 or the worm strip 3 to be repaired, and the worm is the repair worm 5 or the coated worm 6.

[0057] In this optional embodiment, the worm strip fixing assembly 12 can realize the fixed installation of the unworn worm strip 2 or the worm strip 3 to be repaired on the base 11, and the worm screw mounting assembly 13 can realize the fixed installation of the repair worm screw 5 or the coated worm screw 6 to ensure that the relative position of the worm strip and the worm screw is fixed, thereby ensuring the thickness of the coating formed.

[0058] Alternatively, if Figure 8 and Fig. 9 As shown, there are two worm mounting assemblies 13, which are respectively located at the two ends of the mounting groove 111. The worm mounting assembly 13 includes a support 131 installed on the upper end of the base 11 and an upper cover 132 detachably installed on the upper end of the support 131. The upper cover 132 and the support 131 jointly define a mounting hole for mounting the shaft end of the worm.

[0059] Specifically, the upper cover 132 can be detachably mounted on the support 131 by means of bolt connection.

[0060] In this optional embodiment, by detachably mounting the upper cover 132 on the upper end of the support 131 , the upper cover 132 is conveniently separated from the support 131 , so as to facilitate the installation and removal of the worm on the worm nut repairing mold 1 .

[0061] Alternatively, if Figure 8 and Fig. 9 As shown, the upper cover 132 is provided with clamping bolts 1321 arranged up and down, and the lower ends of the clamping bolts 1321 are used to press against the shaft ends of the worm to fasten the worm in the mounting hole.

[0062] In this optional embodiment, when the clamping bolt 1321 is screwed downward at the upper cover 132, the lower end of the clamping bolt 1321 can press against the axial end of the worm to fasten the worm in the mounting hole, thereby preventing the worm from circumferentially moving relative to the mounting hole.

[0063] Alternatively, if Figures 7 to 9 As shown, a notch 522 is formed on the profiling tooth 52 , and the worm nut repairing mold 1 further comprises a limiting plate 14 , and the limiting plate 14 is used to penetrate the notches 522 of a plurality of the profiling teeth 52 at the same time.

[0064] In this optional embodiment, since the limit plate 14 can be simultaneously inserted into the gaps 522 of multiple contour teeth 52, when the worm gear moves circumferentially relative to the mounting hole, the multiple contour teeth 52 will definitely drive the limit plate 14 to rotate together, but the rotation of the limit plate 14 will be restricted by the worm bar, making it difficult for the worm gear to move circumferentially, thereby further restricting the circumferential movement of the worm gear and improving the installation stability of the worm gear on the worm bar repair mold 1.

[0065] Alternatively, if Figure 6 , Figure 8 and Fig. 9 As shown, the positioning plane 51 is provided with a positioning hole 511, and the worm nut repair mold 1 also includes a worm positioning assembly 15, and the worm positioning assembly 15 includes two columns 151 and a positioning beam 152, the two columns 151 are installed on the upper end of the base 11 and are located on both sides of the mounting groove 111, and the two ends of the positioning beam 152 are detachably connected to the upper ends of the two columns 151, and the positioning beam 152 is provided with positioning bolts 1521 arranged up and down, and the positioning bolts 1521 are used for positioning and cooperating with the positioning hole 511.

[0066] Specifically, a plurality of worm positioning assemblies 15 can be provided, and the plurality of worm positioning assemblies 15 are sequentially and spaced apart at the upper end of the base 11 along the length direction of the mounting groove 111 to improve the positioning effect. Specifically, the positioning beam 152 can be detachably connected to the column 151 by bolt connection.

[0067] In this optional embodiment, when the worm needs to be installed, the positioning beam 152 and the positioning bolt 1521 can be removed from the column 151 first, and then the two ends of the worm can be installed on the two worm mounting assemblies 13. Then, the positioning beam 152 is pressed on top of the worm, and at the same time, the two ends of the positioning beam 152 are respectively connected to the two columns 151, and the positioning bolt 1521 is inserted into the positioning hole 511, so as to realize the positioning of the worm on the worm nut repair mold 1, prevent the axial displacement of the worm, and improve the coating repair effect of the worm nut.

[0068] Alternatively, if Figure 8 and Fig. 9 As shown, the worm bar fixing assembly 12 includes a pressing block 121, a first tightening bolt 122 and a second tightening bolt 123, the pressing block 121 is detachably mounted on the upper end of the base 11, one end of the pressing block 121 is exposed above the mounting groove 111, one end of the pressing block 121 is used to tighten the top surface of the worm bar, the first tightening bolt 122 is horizontally penetrated through the groove wall of the mounting groove 111, the end of the first tightening bolt 122 extending into the mounting groove 111 is used to tighten the side surface of the worm bar, the second tightening bolt 123 is horizontally penetrated through the support 131, and the end of the second tightening bolt 123 facing the middle of the mounting groove 111 is used to tighten the end surface of the worm bar.

[0069] Specifically, the pressing block 121 can be detachably mounted on the base 11 by means of bolt connection.

[0070] In this optional embodiment, when the worm strip needs to be installed, the worm strip can be first placed in the installation groove 111, and then the pressure block 121 is adjusted to press the top surface of the worm strip, and then the first tightening bolt 122 is adjusted to tighten the side of the worm strip, and then the second tightening bolt 123 is adjusted to tighten the end surface of the worm strip, and finally the worm strip is fixedly installed on the worm strip repair mold 1 to prevent the worm strip from shifting and improve the coating repair effect of the worm strip.

[0071] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A method for repairing a static pressure snail, characterized in that: include: Installing an unworn worm gear (2) in a worm gear repair mold (1), bonding a plastic sheet (7) into a static pressure cavity (21) of the unworn worm gear (2) to fill the static pressure cavity (21), spraying a first mold release agent on the surface of the tooth portion of the unworn worm gear (2), and then applying a first coating (22); The repair worm (5) is pressed onto the first coating (22) by means of the worm-nut repairing mold (1), the first coating (22) is dried to form a first coating (61) on the repair worm (5), the mold is removed and the repair worm (5) is separated from the unworn worm-nut (2), thereby obtaining a coated worm (6); The worm gear (3) to be repaired is installed in the worm gear repair mold (1), and a second coating (31) is applied to the surface of the tooth portion of the worm gear (3) to be repaired; The plastic sheet (7) is bonded to a position of the coated worm (6) corresponding to the static pressure chamber (21), a second demoulding agent is sprayed on the coated worm (6), the coated worm (6) is pressed onto the second coating (31) by means of the worm nut repairing mold (1), the second coating (31) is dried to form a second coating (41) on the worm nut (3) to be repaired, the mold is removed and the coated worm (6) is separated from the worm nut (3) to be repaired, thereby obtaining a repaired worm nut (4).

2. The method for repairing a static pressure snail according to claim 1, characterized in that: Before installing the worm gear (3) to be repaired in the worm gear repair mold (1) and applying a second coating (31) on the surface of the tooth portion of the worm gear (3) to be repaired, the method further comprises: The damaged coating of the worm nut (3) to be repaired is completely removed, and then the worm nut (3) is cleaned and dried.

3. The method for repairing a static pressure snail according to claim 1, characterized in that: The side wall of the repair worm (5) comprises a connected positioning plane (51) and a profiling cylinder, on which a plurality of profiling teeth (52) arranged in sequence along the axial direction of the repair worm (5) are formed, and the profiling teeth (52) are adapted to the tooth groove shape of the unworn worm nut (2).

4. The method for repairing a static pressure snail according to claim 3, characterized in that: The tooth side surface of the profiling tooth (52) is provided with a groove (521) extending along the extension direction of the profiling tooth (52).

5. The method for repairing a static pressure snail according to claim 3, characterized in that: The worm nut repair mold (1) comprises a base (11), a worm nut fixing assembly (12) and a worm mounting assembly (13); the upper end of the base (11) is provided with a mounting groove (111) for accommodating the worm nut; the worm nut fixing assembly (12) is used to fasten the worm nut in the mounting groove (111); the worm mounting assembly (13) is arranged on the base (11); the worm mounting assembly (13) is used for mounting a worm; the worm nut is the unworn worm nut (2) or the worm nut (3) to be repaired; and the worm is the repair worm (5) or the coated worm (6).

6. The method for repairing a static pressure snail according to claim 5, characterized in that: The worm mounting assembly (13) is provided with two worm mounting assemblies (13), and the two worm mounting assemblies (13) are respectively located at two ends of the mounting groove (111), and the worm mounting assembly (13) comprises a support (131) mounted on the upper end of the base (11) and an upper cover (132) detachably mounted on the upper end of the support (131), and the upper cover (132) and the support (131) jointly define a mounting hole for mounting the shaft end of the worm.

7. The method for repairing a static pressure snail according to claim 6, characterized in that: The upper cover (132) is provided with clamping bolts (1321) arranged up and down, and the lower ends of the clamping bolts (1321) are used to press against the shaft ends of the worm gear to fasten the worm gear in the mounting hole.

8. The method for repairing a static pressure snail according to claim 6, characterized in that: The profiling teeth (52) are provided with notches (522), and the worm bar repairing mold (1) further comprises a limiting plate (14), wherein the limiting plate (14) is used to penetrate the notches (522) of a plurality of the profiling teeth (52) at the same time.

9. The method for repairing a static pressure snail according to claim 6, characterized in that: The positioning plane (51) is provided with a positioning hole (511). The worm nut repairing mold (1) further comprises a worm positioning assembly (15). The worm positioning assembly (15) comprises two columns (151) and a positioning beam (152). The two columns (151) are mounted on the upper end of the base (11) and are located on both sides of the mounting groove (111). The two ends of the positioning beam (152) are respectively detachably connected to the upper ends of the two columns (151). The positioning beam (152) is provided with positioning bolts (1521) arranged up and down. The positioning bolts (1521) are used to cooperate with the positioning holes (511) for positioning.

10. The method for repairing a static pressure snail according to claim 6, characterized in that: The worm bar fixing assembly (12) comprises a pressing block (121), a first tightening bolt (122) and a second tightening bolt (123); the pressing block (121) is detachably mounted on the upper end of the base (11); one end of the pressing block (121) is exposed above the mounting groove (111); one end of the pressing block (121) is used to tighten the top surface of the worm bar; the first tightening bolt (122) is horizontally penetrated through the groove wall of the mounting groove (111); the end of the first tightening bolt (122) extending into the mounting groove (111) is used to tighten the side surface of the worm bar; the second tightening bolt (123) is horizontally penetrated through the support (131); the end of the second tightening bolt (123) facing the middle of the mounting groove (111) is used to tighten the end surface of the worm bar.

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