A method for repairing a static pressure snail

Abstract

The present invention provides a method for repairing a static pressure worm nut, which relates to the technical field of worm nut repair. The method comprises: installing an unworn worm nut in a worm nut repair mold, bonding a plastic sheet into a static pressure cavity of the unworn worm nut to fill the cavity, spraying a first mold release agent on the tooth surface of the unworn worm nut, and then applying a first coating; pressing a repair worm onto the first coating via the worm nut repair mold, drying the first coating to obtain a coated worm; installing a worm nut to be repaired in the worm nut repair mold, applying a second coating to the tooth surface of the worm nut to be repaired; bonding a plastic sheet at a position of the coated worm nut corresponding to the static pressure cavity, spraying a second mold release agent on the coated worm nut, pressing the coated worm onto the second coating via the worm nut repair mold, and drying the second coating to obtain a repaired worm nut. The present invention can improve the repair quality of worm nut.

Description

Technical Field

[0001] The present invention relates to the technical field of worm nut repairing, and in particular to a method for repairing a static pressure worm nut. 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 nut repair method usually involves applying paint on the surface of the worm nut to repair the coating. However, this repair method makes it difficult to accurately control the thickness of the coating after repair, which affects the quality of the worm nut 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 into the static pressure cavity of the unworn worm gear to fill the static pressure cavity, spraying a first release agent on the tooth surface 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 matrix to be repaired in the worm matrix repair mold, and applying a second coating on the surface of the tooth portion of the worm matrix 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 repair 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 matrix to be repaired in the worm matrix repair mold and applying a second coating on the tooth surface of the worm matrix 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 contoured cylindrical surface, and the contoured cylindrical surface is formed with a plurality of contoured teeth arranged in sequence along the axial direction of the repair worm, and the contoured 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 the 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 provided on the base, the worm mounting assembly is used for worm installation, 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. 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 provided on the profiling tooth, and the worm bar repairing mold further comprises a limiting plate, and the limiting plate is used to be simultaneously passed through the notches of a plurality of the profiling teeth.

[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 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 strip 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 strip, the first tightening bolt is horizontally passed 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 strip, the second tightening bolt is horizontally passed 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 strip.

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

[0022] Figure 1 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 Schematic diagram of step S2 of the method for repairing a static pressure snail nut according to an embodiment of the present invention;

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

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

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

[0027] Figure 6 This is a schematic structural diagram 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 Schematic diagram of the installation of an unworn worm gear and a repair worm in a worm gear repair mold according to an embodiment of the present invention;

[0030] Figure 9 Schematic diagram of the exploded structure of the mold for repairing the worm 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. worm nut fixing assembly; 121. Pressure block; 122. First tightening bolt; 123. Second tightening bolt; 13. Worm mounting assembly; 131. Support; 132. Upper cover; 1321. Holding bolt; 14. Limiting plate; 15. Worm positioning assembly; 151. 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. Repaired worm nut; 41. Second coating; 5. Repair 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] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, specific embodiments of the present invention are described in detail below with reference to 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 construed as being limited to the embodiments described herein. Instead, 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 for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0034] The Z-axis in the accompanying drawings represents the vertical direction, that is, the up-down position, with the positive direction of the Z-axis representing the top and the reverse direction of the Z-axis representing the bottom. The X-axis in the accompanying drawings represents the horizontal direction and is designated as the front-to-back position, with the positive direction of the X-axis representing the front side and the reverse direction of the X-axis representing the rear side. The Y-axis in the accompanying drawings represents the left-to-right position, with the positive direction of the Y-axis representing the left side and the reverse direction of the Y-axis representing the right side. It should also be noted that the aforementioned Z-axis, Y-axis, and X-axis are merely for the purpose of facilitating the description of the present invention and simplifying the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations 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 "multiple" mentioned in the present invention are illustrative rather than restrictive. 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 will be described in detail below with reference to 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 2 in a worm worm repair mold 1, adhere a plastic sheet 7 into the static pressure cavity 21 of the unworn worm worm 2 to fill the static pressure cavity 21, spray a first release agent on the tooth surface of the unworn worm worm 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 gear 3 to be repaired in the worm gear repair mold 1 , and applying a second coating 31 on the surface of the teeth of the worm gear 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 to obtain the 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 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 nut 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 with no wear on the coating. The tooth side of the normal worm gear strip usually has a static pressure cavity 21 (see Figure 5 ), the static pressure chamber 21 is formed by partially uncoated tooth side surfaces of the worm gear, and is generally a groove-shaped structure extending along the extension direction of the worm gear teeth. In addition, the plastic sheet 7 can be adapted to the shape of the static pressure chamber 21 so as to precisely fill the static pressure chamber 21. It should be noted that the tooth surface includes the tooth side surfaces, tooth top surfaces, and tooth groove bottom surfaces of the worm gear teeth.

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

[0046] In this embodiment, the first release agent is sprayed on the tooth surface of the unworn worm 2, and then the first coating 22 is applied. Then, the repair worm 5 is pressed against the first coating 22 through the worm repair mold 1. Finally, the first coating 22 is dried. In this way, the first coating 22 is adhered to the repair worm 5 and the first coating 61 is formed on the surface of the repair worm 5 to obtain a coated worm 6. The second coating 31 is applied on the tooth surface of the worm 3 to be repaired, and then the coated worm 6 is obtained. 6, then the coated worm 6 is pressed against the second coating 31 through the worm nut repair mold 1. Finally, the second coating 31 is dried. In this way, the second coating 31 adheres to the worm nut 3 to be repaired, forming a second coating 41 on the surface of the teeth of the worm nut 3 to be repaired, thereby obtaining the repaired worm nut 4. In this way, the coating of the unworn worm nut 2 is copied to the worm nut 3 to be repaired, which helps to ensure the coating thickness of the repaired worm nut 4 and improve 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, ensuring the area of ​​the static pressure chamber 21 of the repaired worm nut 4, further improving the repair quality of the worm nut.

[0047] Optionally, before installing the worm 3 to be repaired in the worm nut repair mold 1 and applying the second coating 31 on the tooth surface of the worm nut 3 to be repaired, the method further includes: removing all damaged coatings on the worm nut 3 to be repaired, 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 may be that the coating of the worm strip is damaged locally, 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, this 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 worm strip after repair.

[0050] Alternatively, as Figure 6 As shown, the side wall of the repair worm 5 includes a connected positioning plane 51 and a contoured cylindrical surface, 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 bars 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, positioning plane 51 helps position the worm within the worm nut repair mold 1, ensuring consistency between the position of the repair worm 5 and the position of the coated worm 6. This prevents positional discrepancies between the two installed worms, which could affect the coating quality after the repair. Furthermore, the profiling teeth 52 can be inserted into the tooth grooves of an unworn worm nut 2, bringing the surface of the profiling teeth 52 closer to the tooth surface of the unworn worm nut 2, thereby reducing the amount of first coating 22 used.

[0053] Alternatively, as Figure 7 As shown, 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.

[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 sequentially arranged 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, as Figure 8 and Figure 9 As shown, the mold 1 for repairing the worm strip 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 provided 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 mounting assembly 13 can realize the fixed installation of the repair worm 5 or the coated worm 6 to ensure that the relative position of the worm strip and the worm is fixed, thereby ensuring the thickness of the coating formed.

[0058] Alternatively, as Figure 8 and Figure 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 easily separated from the support 131 , thereby facilitating the installation and removal of the worm on the worm nut repair mold 1 .

[0061] Alternatively, as Figure 8 and Figure 9 As shown, the upper cover 132 is provided with upper and lower clamping bolts 1321 , 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 secure the worm in the mounting hole, thereby preventing the worm from circumferentially moving relative to the mounting hole.

[0063] Alternatively, as Figures 7 to 9 As shown, a notch 522 is provided on the profiling tooth 52 , and the worm bar repairing mold 1 further includes a limiting plate 14 , which 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 passed through the gaps 522 of multiple contour teeth 52, when the worm 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 to move circumferentially, thereby further restricting the circumferential movement of the worm and improving the installation stability of the worm on the worm bar repair mold 1.

[0065] Alternatively, as Figure 6 、 Figure 8 and Figure 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. 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 to position and cooperate with the positioning holes 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 along the length direction of the mounting groove 111 on the upper end of the base 11 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, as Figure 8 and Figure 9 As shown, the worm strip fixing assembly 12 includes a pressure block 121, a first tightening bolt 122 and a second tightening bolt 123. The pressure block 121 is detachably mounted on the upper end of the base 11, and one end of the pressure block 121 is exposed above the mounting groove 111. One end of the pressure block 121 is used to tighten the top surface of the worm strip. The first tightening bolt 122 is horizontally penetrated through the groove wall of the mounting groove 111, and the end of the first tightening bolt 122 extending into the mounting groove 111 is used to tighten the side surface of the worm strip. 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 strip.

[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 placed in the installation groove 111 first, 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 face 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 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) through the worm nut repair 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) to obtain 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 release agent is sprayed on the coated worm (6), the coated worm (6) is pressed onto the second coating (31) through the worm bar repair mold (1), the second coating (31) is dried to form a second coating (41) on the worm bar to be repaired (3), the mold is removed and the coated worm (6) is separated from the worm bar to be repaired (3), thereby obtaining a repaired worm bar (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 contoured cylindrical surface, on which a plurality of contoured teeth (52) arranged in sequence along the axial direction of the repair worm (5) are formed, and the contoured teeth (52) are adapted to the tooth groove shape of the unworn worm bar (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 bar repair mold (1) comprises a base (11), a worm bar 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 bar; the worm bar fixing assembly (12) is used to fasten the worm bar in the mounting groove (111); the worm mounting assembly (13) is provided on the base (11); the worm mounting assembly (13) is used for mounting a worm; the worm bar is the unworn worm bar (2) or the worm bar to be repaired (3); 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: Two worm mounting assemblies (13) are provided, and the two worm mounting assemblies (13) are respectively located at the two ends of the mounting groove (111). The worm mounting assembly (13) includes 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). 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 to fasten the worm 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 simultaneously penetrate the notches (522) of a plurality of the profiling teeth (52).

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), and the worm nut repair mold (1) further includes a worm positioning assembly (15), 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 installation groove (111), 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 to position and cooperate with the positioning hole (511).

10. The method for repairing a static pressure snail according to claim 6, characterized in that: The worm bar fixing assembly (12) includes a pressure block (121), a first tightening bolt (122) and a second tightening bolt (123), the pressure block (121) is detachably mounted on the upper end of the base (11), one end of the pressure block (121) is exposed above the mounting groove (111), one end of the pressure 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.

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