Turning clamping tool for composite insulator winding pipe

Abstract

The invention relates to a turning clamping tool for a composite insulator winding pipe. The turning clamping tool comprises a fixing base and a clamping base which are independently formed. The fixing base is composed of a clamping disc and an assembling column, the clamping disc and the assembling column are concentric, and structural clamping is conducted on the chuck type clamping device through the clamping disc face. Three linear caulking grooves are formed in the assembly column, and guide gears are arranged on the inner sides of the linear caulking grooves. The clamping seat is composed of three clamping units, each clamping unit comprises a clamping and embedding part and a clamping part, each clamping and embedding part is provided with an embedding block matched with the corresponding linear embedding groove, and the back side of each embedding block is provided with a rack meshed with the corresponding guide gear; the clamping part is provided with a cambered surface tensioning part, the diameter of a circle corresponding to the cambered surface of the outer side face of the fan-shaped cambered surface structural body on the cambered surface tensioning part does not exceed the diameter of the circle of the inner pipe face of the winding pipe, and the cambered surface tensioning part is tightly attached to the inner pipe face of the winding pipe through synchronous radial outward movement of the clamping base, so that end face clamping is achieved. The machining efficiency and the machining quality of the winding pipe can be remarkably improved, the production cost is reduced, and important practical value is achieved.

Description

Technical Field

[0001] The present invention relates to a processing auxiliary device for power equipment, and particularly to a turning clamping tooling for a winding tube of a composite insulator. Background Art

[0002] Insulators are indispensable components in the power system, mainly used to support and isolate conductors to prevent current from flowing directly into the ground or other conductive bodies. There are various types of insulators, which can be classified into ceramic insulators, glass insulators, composite insulators, etc. according to the material. Among them, composite insulators are widely used in high-voltage transmission lines due to their advantages such as light weight, high strength, and corrosion resistance.

[0003] Generally, a composite insulator consists of three main parts: a winding tube, a sheath, and fittings. As the core of the composite insulator, the winding tube not only has to bear mechanical loads but also must have excellent insulation performance. In the manufacturing process of the winding tube, pultrusion molding, winding molding, and injection molding are three main technical means. No matter which method is used for molding, a certain size margin will be reserved for the obtained winding tube blank, and then external contour trimming treatment will be carried out to obtain a product that meets the design requirements on the basis of removing the margin.

[0004] Turning, as one of the important means for external contour trimming treatment, can accurately remove excess materials to make the winding tube reach the predetermined size and shape. Therefore, when performing turning processing, how to stably, efficiently, and accurately clamp the winding tube to prevent it from deforming or falling off during the processing has a crucial impact on the processing accuracy and surface quality of the winding tube. Since the winding tube is usually made of fiber-reinforced plastic (FRP), although this material has a relatively high tensile strength and excellent fatigue resistance, it also has the characteristic of relatively weak bending strength. The chuck-type clamping devices (such as three-jaw chucks, four-jaw chucks, etc.) used in traditional lathes must clamp the outside of the end of the outer tube surface of the pipe to fix the workpiece; this material characteristic of fiber-reinforced plastic makes this chuck-type clamping technology apply a positive pressure on the upper surface of the outer tube surface of the fiber-reinforced plastic material. Due to the insufficient bending strength of the material, this pressure distribution method is likely to cause deformation of the winding tube in the clamping area. This deformation not only damages the appearance of the winding tube but may also have a negative impact on its processing performance and the mechanical and insulation characteristics of the winding tube after processing. Therefore, when turning the winding tube, a more refined clamping method must be adopted. This is particularly important for processing winding tubes used in medium and large-sized composite insulators with larger sizes and heavier weights.

[0005] In addition, the traditional three-jaw chuck clamping method also has the problem of insufficient versatility. With the continuous development of composite insulator technology, the specifications and sizes of winding tubes are constantly changing, which requires the clamping tooling to be able to adapt to winding tubes of different sizes. The adjustment range of the traditional chuck-type clamping device is small, making it difficult to meet this diverse demand.

[0006] For the above reasons, it is necessary to design a turning clamping tooling dedicated to the winding tube of composite insulators to improve the clamping stability of the winding tube of composite insulators, reduce damage to the winding tube while ensuring machining accuracy and surface quality, and promote the further development of composite insulator technology. Summary of the Invention

[0007] The technical problem solved by the present invention is to provide a turning clamping tooling for the winding tube of composite insulators, which can effectively improve the machining quality and efficiency of the winding tube and meet the machining requirements of winding tubes of different specifications at the same time.

[0008] The technical problem solved by the present invention is realized by adopting the following technical solutions: A turning clamping tooling for the winding tube of composite insulators includes a fixed seat and a clamping seat. The fixed seat and the clamping seat are independently formed and assembled for use; The fixed seat includes a clamping disc and an assembly column. The clamping disc and the assembly column are concentrically arranged; the fixed seat is structurally clamped on the chuck-type clamping device through the clamping disc surface; three linear grooves are formed on the assembly column, and the linear grooves are radially uniformly arranged on the outer circle of the top surface of the assembly column. A guiding clamping notch is formed on the radial section of the linear groove, and the outer side of the guiding clamping notch is an open surface; a guiding gear is arranged on the inner side of each linear groove of the fixed seat, and a driving structure for driving the guiding gear to rotate is formed on the assembly column or the clamping disc; The clamping seat includes three clamping units with the same structure. The clamping unit includes an integrally formed clamping part and a clamping part; an insert block matching the linear groove is formed on the clamping part, and a rack matching the guiding gear is formed on the back side of the insert block. After the insert block is inserted into the linear groove, the rack meshes with the guiding gear, and they jointly form a gear-rack pair; the clamping part has an arc surface tension part, and the arc surface tension part is a convex fan-shaped arc surface structure. The fan-shaped angle corresponding to the fan-shaped arc surface structure is less than 120°, and the diameter of the circle corresponding to the outer side arc surface of the fan-shaped arc surface structure is not greater than the inner tube surface circle diameter of the winding tube; the clamping seat realizes the end surface clamping of the winding tube by the synchronous radial outward movement of the three clamping units on the assembly column, so that the outer side arc surface of the fan-shaped arc surface structure tightly adheres to and presses against the inner tube surface of the winding tube.

[0009] As a further limitation, the clamping disc is a circular disc with a thickness between 15 and 35 mm, which is convenient for clamping and fixing by a chuck-type clamping device; the assembly column is of a cylindrical structure, and the diameter of the cross-sectional circle thereof is smaller than the outer diameter of the clamping disc and larger than the outer diameter of the winding tube.

[0010] As a further limitation, a structural boss with a circular cross-section is formed at the middle position on the front surface of the clamping disc of the fixed seat, and an external thread surface is formed on the structural boss; the inner side of the assembly column has a cylindrical structure inner cavity with an open bottom surface, and an inner thread surface matching the external thread surface is formed at the outer edge of the bottom of the cylindrical structure inner cavity; through the threaded connection between the structural boss and the assembly column, the fixed seat can realize the detachable connection between the clamping disc and the assembly column; The guiding gear is detachably assembled in the inner cavity of the cylindrical structure through an assembled bearing structure on the open side of the inner cavity of the cylindrical structure.

[0011] As a further limitation, the cross-sectional shape of the guiding clamping notch is one of an I-shaped, a dovetail groove-shaped, and a wedge-shaped. Correspondingly, guiding convex blocks matching the shape of the guiding clamping notch are formed on the insert block. The guiding convex blocks cooperate with the guiding clamping notch to play a guiding and limiting role when the clamping unit moves along the linear groove, preventing the clamping unit from detaching from the linear groove.

[0012] As a further limitation, a guiding inclined surface is formed on the surface of the insert block on the loading side, and the guiding inclined surface matches the guiding clamping notch to facilitate the smooth insertion of the insert block into the linear groove.

[0013] As a further limitation, the driving structure is an annular gear ring formed on the assembly column or the clamping disc. The annular gear ring is synchronously meshed with the three guiding gears. By rotating the annular gear ring, the guiding gears can be driven to rotate synchronously; a torque amplification structure for manually rotating the annular gear ring is arranged outside the annular gear ring to facilitate manual operation.

[0014] As a further limitation, the driving structure is a driving column rod. The driving column rods correspond to the guiding gears one by one. The driving column rods are integrally formed with the guiding gears on the inner side and can drive the guiding gears to rotate by rotating the driving column rods. The driving column rods extend outwards from the assembly column and are flush with the outer cylindrical surface of the assembly column; an inner hexagonal groove is formed on the top surface of the driving column rod to facilitate the rotation operation of the driving column rod using an inner hexagonal wrench, thereby driving the guiding gears to rotate.

[0015] As a further limitation, a limiting structure for restricting the axial movement of the winding tube is further formed on the clamping seat; The limiting structure includes a limiting block arranged at the base of the clamping seat. The limiting block and the clamping seat are of an integrally formed structure; the axial movement of the winding tube is restricted by the two side clamping seats through the abutment of the limiting blocks against the outer tube surface of the winding tube. The limiting structure is a rubber gasket formed on the outer arc surface of the fan-shaped arc surface structure body, and protective patterns are formed on the surface of the rubber gasket.

[0016] As a further limitation, the clamping part and the clamping part on the clamping unit are of a combined assembly structure, and the combined assembly method is one of bolt connection, plug-in fit or snap connection, so as to facilitate the assembly and disassembly of the clamping unit, and at the same time ensure the stability and reliability of the clamping unit during the clamping process.

[0017] As a further limitation, reinforcing ribs or reinforcing rib plates are also arranged between the clamping part and the clamping part of the clamping unit to improve the overall strength and stiffness of the clamping unit.

[0018] As a further limitation, positioning pins or positioning holes are arranged on the clamping part and / or the clamping part of the clamping unit to realize the precise positioning and assembly of the clamping unit when clamping the winding tube.

[0019] Beneficial effects: The turning clamping tool for the winding tube of the composite insulator of the present invention realizes the abutting and pressing of the inner tube surface of the winding tube through the synchronous radial outward movement of the clamping unit on the clamping seat on the assembly column of the fixed seat, so as to fix the end surface of the winding tube by the force mode of outward expansion force from the inside. This fixing method avoids the deformation of the winding tube in the clamping area that may be caused by the clamping of the outer tube surface of the winding tube by the traditional chuck clamping device, reduces the risk of deformation and damage, and improves the processing quality and processing efficiency of the winding tube. By adjusting the guiding gear, the radial position of the clamping unit on the clamping seat on the assembly column can be adjusted, and then the opening degree of the fan-shaped arc surface structure body can be adjusted to adapt to winding tubes of different specifications, so as to improve the versatility and flexibility of the tooling. In addition, the independently formed fixed seat and clamping seat are convenient for disassembly and assembly, and convenient for the maintenance and replacement of the tooling; and by replacing the clamping seat with different-sized clamping parts, different specifications of winding tubes can be quickly adapted, further enhancing the flexibility and practicality of the tooling. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the assembly structure style of a preferred embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the back structure of the clamping seat in a preferred embodiment of the present invention.

[0022] Figure 3 It is a schematic diagram of the front structure of the clamping seat in a preferred embodiment of the present invention.

[0023] Wherein: 1. Three-jaw chuck; 2. Chuck jaw adjustment slot; 3. Chuck jaw; 4. Clamping disc; 5. Clamping unit adjustment slot; 6. Assembly column; 7. Clamping unit; 8. Rubber gasket; 9. Winding tube; 10. Insert block; 11. Insert block connector; 12. Substrate of clamping part; 13. Arc surface tension part; 14. Rack; 15. Limit block; 16. Reinforcing rib plate. Detailed implementation mode

[0024] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below with reference to specific illustrations.

[0025] It should be noted that the embodiments in the description and claims of the present invention and the above drawings can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed.

[0026] In addition, the embodiments shown in the content of this specific implementation mode are only one of the implementation form states that the present invention can show, and do not represent all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] See Figures 1 to 3 A turning and clamping tooling for the winding tube of a composite insulator. In this embodiment, this turning and clamping tooling is used to assemble the winding tube blank of the composite insulator on a horizontal machine tool, and after assembly, the winding tube blank is turned on the lathe to remove the surplus part on the surface of the winding tube blank and obtain the finished product of the winding tube 9 with the required size and shape to meet the requirement of precise processing of the winding tube of the composite insulator.

[0028] In this embodiment, the fixture of the horizontal machine tool is a common three-jaw chuck 1, and one three-jaw chuck 1 is provided at each of the head and tail ends of the machine tool. The turning and clamping tooling of this embodiment can be assembled and fixed on the three-jaw chucks 1 at the head and tail ends of the machine tool respectively, realizing the simultaneous clamping and fixing of both ends of the winding tube 9, thereby further improving the stability of the winding tube 9 during the turning process.

[0029] Figure 1 The assembly structure style diagram of the turning and clamping tooling on one side shown, in Figure 1In the embodiment shown, the turning clamping tool includes an independently formed fixing seat and a clamping seat, wherein the fixing seat is used to be assembled on the three-jaw chuck 1 of the machine tool, and the position of the turning clamping tool is fixed by means of the clamping force of the three-jaw chuck 1, thereby clamping and fixing the side end portion 9 assembled on the turning clamping tool; and the clamping seat is used to clamp and fix the position of the winding tube 9.

[0030] The fixing seat specifically includes a clamping disc 4 and an assembly column 6. The clamping disc 4 is concentrically arranged with the assembly column 6, and the diameter of the clamping disc 4 is larger than the diameter of the assembly column 6. The clamping disc 4 is a circular disc structure with a certain thickness. The thickness is based on whether it can be stably clamped by the three-jaw chuck 1, and is preferably between 15 and 35 mm. A structural boss with a circular cross-section is formed in the middle position of the front of the clamping disc 4, and an external threaded surface is formed on the structural boss; and the inner side of the assembly column 6 has a cylindrical structural inner cavity with an open bottom surface, and the outer edge of the bottom of the cylindrical structural inner cavity is formed with an internal threaded surface that matches the external threaded surface. Through the threaded connection between the structural boss and the assembly column 6, a detachable connection between the clamping disc 4 and the assembly column 6 can be achieved, thereby facilitating the maintenance and replacement of the tooling.

[0031] In this embodiment, the mounting post 6 is a cylindrical structure with a cross-sectional diameter smaller than the outer diameter of the clamping disc and larger than the outer diameter of the winding tube. This creates a clamping space on the mounting post 6 for the winding tube 9 and ensures excellent stability during rotation after clamping. The mounting post 6 is formed with three linear beading grooves, radially and evenly spaced along the outer circumference of the top surface of the mounting post 6. Guide clamping notches are formed in the radial cross-section of the linear beading grooves. These guide clamping notches are designed in an I-shaped configuration. This design ensures that the clamping units that comprise the clamping seat have good guidance and stability as they move along the linear beading grooves.

[0032] The outer side of the guide clamping slot is open, facilitating installation and removal of the clamping unit from the outside. Within the inner structural cavity of the mounting column 6, the mounting base is equipped with a guide gear at each position corresponding to the inner side of the linear slot. These guide gears are removably mounted within the cylindrical structure of the mounting column via a prefabricated bearing structure, ensuring smooth and stable rotation. The assembly of the guide gears within the corresponding linear slots within the mounting column 6 is similar to the assembly of the drive mechanism within the corresponding jaws 3 in the three-jaw chuck 1.

[0033] The guide gear is actuated by a drive structure disposed on a fixed base. In different embodiments, the drive structure has two main structural forms: In this embodiment, the structural form of the driving structure is the same as that of the three-jaw chuck 1 driving the jaws 3, which is a driving column rod structure. The driving column rods correspond to the guiding gears one by one. The driving column rods are integrally formed with the guiding gears on the inner side and can drive the guiding gears to rotate by rotating the driving column rods. The driving column rods extend outward from the assembly column 6 and are flush with the outer cylindrical surface of the assembly column 6 to avoid interfering with the assembly of the clamping seat. The top surface of the driving column rod is formed with a clamping unit adjustment hole groove 5, and the clamping unit adjustment hole groove 5 is an internal hexagonal groove to facilitate the rotation operation of the driving column rod using an internal hexagonal wrench, so as to realize the rotational drive of the guiding gear and drive the clamping units on the clamping seat to move synchronously, realizing the clamping and fixing of the winding tube. In this way, the clamping units 7 can be operated one by one through the three clamping unit adjustment hole grooves 5, and its operation flexibility and accuracy are relatively high. The position of each clamping unit can be adjusted individually according to actual needs to adapt to winding tubes of different shapes or sizes. However, the disadvantage is that it requires relatively high operation skills for operators and the operation efficiency is relatively low.

[0034] In another embodiment, the driving structure is an annular gear ring formed on the assembly column 6 or the clamping disc 4. The annular gear ring is synchronously engaged with the three guiding gears. By rotating the annular gear ring, the three guiding gears can be driven to rotate synchronously. A torque amplification structure, such as a handle or a wrench, etc., is arranged on the outer side of the annular gear ring to facilitate manual operation. This form of driving structure can realize the synchronous drive of the three guiding gears, thereby improving the efficiency and stability of the clamping operation. However, the disadvantage is that its operation flexibility is relatively low and the position of each clamping unit cannot be adjusted individually. However, for most winding tubes with standard shapes and sizes, this synchronous drive method is sufficient to meet the processing requirements and the operation is more simple and fast.

[0035] In this embodiment, the clamping seat includes three clamping units 7 with the same structure. Each clamping unit 3 is integrally formed by a clamping part and a mounting part. An insert block 10 matching the linear slot is formed on the clamping part. The cross-section of the insert block 10 matches the corresponding guiding clamping slot opening on the cross-section of the linear slot to ensure that the insert block 10 is inserted and pushed to the meshing position at the open surface position outside the linear slot. In order to ensure that the insert block 10 can be smoothly inserted into the linear slot from the open surface position outside the linear slot, a guiding inclined surface matching the guiding clamping slot opening is formed on the surface of the insert block 10 on the loading side.

[0036] A rack 14 matching the guiding gear is formed on the back side of the insert block 10. After the insert block 10 is inserted into the meshing position in the linear slot, the rack 14 is engaged with the guiding gear and jointly forms a gear-rack pair. At this time, by rotating the guiding gear, the clamping unit 7 can be driven to move radially along the linear slot, and its movement form and principle are similar to the movement form and principle of the jaw 3 on the three-jaw chuck 1.

[0037] In this embodiment, the insert block 10 of the clamping unit 7 is fixedly connected to the clamping part substrate 12 as a whole through the insert block connecting body 11 on the back side. The clamping part substrate 12 is a fan-shaped plate surface with an included angle of 110°. An arc surface tension part 13 is formed on the surface of the clamping part substrate 12. The arc surface tension part 13 is a fan-shaped arc surface structure that protrudes outward, and its base is formed integrally with the clamping part substrate 12. The diameter of the circle corresponding to the outer side arc surface of the fan-shaped arc surface structure on the arc surface tension part 13 is not greater than the inner tube surface diameter of the winding tube 9. When the three clamping units 7 move radially outward synchronously on the assembly column 6, the outer side arc surface of the fan-shaped arc surface structure will closely adhere to and tightly press against the inner tube surface of the winding tube 9, thereby realizing the end face clamping and fixing of the winding tube 9.

[0038] In another embodiment, the clamping part and the clamping part on the clamping unit can also be set as a combined assembly structure to improve the flexibility of the clamping unit. The combined assembly method can be bolt connection, that is, matching bolt holes and nut holes are respectively arranged on the clamping part and the clamping part, and the fixed connection between the two is realized through the cooperation of bolts and nuts; it can also be plug-in fit, that is, a plug-in protrusion is arranged on the clamping part, and a plug-in groove matching the plug-in protrusion is arranged on the clamping part, and the connection between the two is realized through the plug-in fit of the plug-in protrusion and the plug-in groove; it can also be snap connection, that is, a snap protrusion is arranged on the clamping part, and a snap groove matching the snap protrusion is arranged on the clamping part, and the connection between the two is realized through the snap fit of the snap protrusion and the snap groove. The design of this combined assembly structure not only facilitates the assembly and disassembly of the clamping unit, but also ensures the stability and reliability of the clamping unit during the clamping process, improving the use efficiency and convenience of the tooling.

[0039] In order to further improve the stability and reliability of clamping, a limiting structure for restricting the axial movement of the winding tube 9 is also arranged on the clamping seat. In this embodiment, the limiting structure is a combination of a limiting block 15 and a rubber gasket 8. Among them, the limiting block 15 is an extended part of the clamping part substrate 12 outside the outer contour area of the arc surface tension part 13. During the clamping process, the two side clamping seats effectively restrict the axial movement of the winding tube 9 by abutting against the end face of the winding tube 9 through the limiting block 15, preventing it from shifting during the processing, so as to ensure the processing accuracy and stability. The inner side of the rubber gasket 8 is applied with glue and adhered to the outer side arc surface of the corresponding fan-shaped arc surface structure on the arc surface tension part 13 through an adhesive layer. The material characteristics of the rubber gasket 8 itself enable it to have good anti-slip effect and buffering effect when its surface tightly presses against the inner tube surface of the winding tube 9. By further forming protective patterns on the surface of the rubber gasket 8, the friction with the inner tube surface of the winding tube 9 can be further increased, which can not only effectively prevent the winding tube 9 from sliding during the processing and avoid damage during the clamping process, but also avoid scratching or indentation on the inner tube surface of the winding tube 9, thereby protecting the surface quality of the winding tube 9.

[0040] In addition, considering that the arc-shaped tensioning portion 13 is vertically arranged on the surface of the clamping portion substrate 12, in order to improve the structural stability of the arc-shaped tensioning portion 13 after being stressed, a reinforcing rib plate 16 can also be provided between the inner side surface of the arc-shaped tensioning portion 13 and the clamping portion substrate 12 to enhance the bending strength and stiffness of the arc-shaped tensioning portion 13, prevent it from deforming or being damaged after being stressed, and thus ensure the stable clamping of the winding tube 9 by the clamping unit 7. The design of the reinforcing rib plate 16 can be adjusted according to actual needs, such as the number, position, shape, etc., to achieve the best strengthening effect.

[0041] In order to improve the precise positioning and assembly efficiency of the clamping unit during the winding tube clamping process, the present embodiment further provides a quick positioning and locking mechanism for the clamping unit. Specifically, at the end of the rack 14 of the clamping unit, an elastic locking pin is designed, and the locking pin matches the preset locking hole on the assembly column 6. When the clamping unit is adjusted to the required position through the guide gear, gently push the locking pin, and it can be snapped into the locking hole to achieve the quick positioning and temporary fixing of the clamping unit, avoiding the position deviation of the clamping unit caused by vibration or external force interference during the processing. This design not only improves the accuracy and stability of clamping, but also effectively shortens the clamping adjustment time and improves the overall working efficiency.

[0042] When the turning clamping tooling of the present embodiment is in use, first select a clamping unit 7 with a suitable size, and then assemble the clamping unit 7 on the assembly column 6. During the assembly, insert the insert block 10 of the clamping unit 7 from the outside of the straight insert groove in place, and then use an internal hexagon wrench to rotate the driving column rod to the end at the position of the clamping unit adjustment hole groove 5, so that the clamping unit 7 enters the zero position (the position closest to the center of the top surface of the assembly column 6) on the assembly column 6, that is, the assembly and positioning calibration of the clamping seat on the fixed seat are completed.

[0043] Then, assemble the whole turning clamping tooling on the three-jaw chuck 1 of the machine tool, and use a hexagon wrench to operate on the jaw adjustment hole groove 2, so that the three jaws 3 of the three-jaw chuck 1 clamp and fix the fixed seat.

[0044] Next, place the winding tube 9 (winding tube blank) of the composite insulator to be processed on the corresponding arc-shaped tensioning portion 13 positions of the three clamping units 7 (such as Figure 1Between them as shown). Subsequently, the operator can rotate the drive column rod through the clamping unit adjustment hole groove 5 to drive the guide gear to rotate, and then drive the clamping unit 7 to move radially outward along the linear groove. As the clamping unit 7 moves outward, the arc-shaped tensioning part 13 on it will gradually approach and tightly press against the inner tube surface of the winding tube 9 until stable clamping and fixing of the winding tube 9 is achieved. During this process, the combined structure of the limit block 15 and the rubber gasket 8 will effectively limit the axial movement of the winding tube 9 and prevent it from shifting during the processing. At the same time, the design of the reinforcing rib plate 16 will also enhance the structural stability of the arc-shaped tensioning part 13 to ensure that it is not easily deformed or damaged after being stressed.

[0045] After the clamping is completed, the operator can start the machine tool for turning processing. During the processing, the turning clamping tooling will ensure that the winding tube 9 maintains a stable clamping state, so as to meet the requirements for precise processing of the winding tube of the composite insulator. After the processing is completed, the operator only needs to operate the drive structure in the reverse direction to make the clamping unit 7 release the clamping of the winding tube 9 (the finished product of the winding tube 9 after the allowance processing), and then remove the winding tube 9 for the treatment of the next process.

[0046] When it is necessary to clamp other winding tubes of different sizes, the operator can rotate the drive column rod with an inner hexagon wrench to drive the guide gear to rotate, and then drive the clamping unit 7 to move radially to the outermost position along the linear groove so that the rack 14 disengages from the guide gear. At this time, the clamping unit 7 can be pulled out of the linear groove and replaced with a clamping unit 7 suitable for the new size of the winding tube. The new clamping unit 7 is assembled and calibrated according to the same steps to ensure that it can stably clamp the new winding tube. This design enables the turning clamping tooling to flexibly adapt to winding tubes of different sizes, greatly improving the versatility and practicality of the tooling.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A turning clamping tooling for a composite insulator winding tube, characterized in that It includes a fixed seat and a clamping seat. The fixed seat and the clamping seat are independently formed and assembled for combined use; The fixed seat includes a clamping disc and an assembly column. The clamping disc and the assembly column are concentrically arranged. The fixed seat is structurally clamped on the chuck-type clamping device through the clamping disc surface. Three linear grooves are formed on the assembly column. The linear grooves are radially and evenly arranged on the outer circle of the top surface of the assembly column. A guiding clamping notch is formed on the radial section of the linear groove, and the outside of the guiding clamping notch is an open surface. A guiding gear is arranged on the inner side of each linear groove of the fixed seat, and a driving structure for driving the guiding gear to rotate is formed on the assembly column or the clamping disc; The clamping seat includes three clamping units with the same structure. The clamping unit includes an integrally formed clamping part and a clamping portion. An insert block matching the linear groove is formed on the clamping part. A rack matching the guiding gear is formed on the back side of the insert block. After the insert block is inserted into the linear groove, the rack meshes with the guiding gear, and they jointly form a gear-rack pair. The clamping portion has an arc surface tension portion. The arc surface tension portion is a convex sector arc surface structure. The sector angle corresponding to the sector arc surface structure is less than 120°, and the diameter of the circle corresponding to the outer side arc surface of the sector arc surface structure is not greater than the inner pipe surface diameter of the winding pipe. The clamping seat realizes the end face clamping of the winding pipe by the synchronous radial outward movement of the three clamping units on the assembly column, so that the outer side arc surface of the sector arc surface structure closely adheres to and presses against the inner pipe surface of the winding pipe.

2. The turning clamping tooling for the winding tube of the composite insulator according to claim 1, wherein, The clamping disc is a circular disc with a thickness between 15 and 35 mm, which is convenient for clamping and fixing by the chuck-type clamping device. The assembly column is a cylindrical structure, and the diameter of its cross-sectional circle is smaller than the outer diameter of the clamping disc and larger than the outer diameter of the winding pipe.

3. The turning clamping tooling for the winding tube of the composite insulator according to claim 1, characterized in that A structurally convex platform with a circular cross-section is formed at the middle position of the front surface of the clamping disc of the fixed seat. An external thread surface is formed on the structurally convex platform. The inner side of the assembly column has a cylindrical structure inner cavity with an open bottom, and an internal thread surface matching the external thread surface is formed on the outer edge of the bottom of the cylindrical structure inner cavity. Through the threaded connection between the structurally convex platform and the assembly column, the fixed seat can realize the detachable connection between the clamping disc and the assembly column; The guiding gear is detachably assembled in the structural inner cavity through an assembled bearing structure on the open side of the cylindrical structure inner cavity.

4. The turning clamping tooling for the winding tube of the composite insulator according to claim 1, wherein The cross-sectional shape of the guiding clamping notch is one of I-shaped, dovetail groove-shaped, and wedge-shaped. Correspondingly, a guiding convex block matching the shape of the guiding clamping notch is formed on the insert block.

5. The turning clamping tooling for the winding tube of a composite insulator according to claim 1, wherein, A guiding inclined surface matching the guiding clamping notch is formed on the surface of the insert block on the insertion side.

6. The turning clamping tooling for the winding tube of the composite insulator according to claim 1, wherein, The driving structure is a ring gear formed on the assembly column or the clamping disc. The ring gear is synchronously meshed with the three guiding gears. By rotating the ring gear, the guiding gears can be driven to rotate synchronously. A torque amplification structure for manually rotating the ring gear is arranged on the outside of the ring gear.

7. The turning and clamping tooling for the winding tube of the composite insulator according to claim 1, characterized in that, The driving structure is a driving column rod, and the driving column rods correspond to the guiding gears one by one. The driving column rod is integrally formed with the guiding gear on the inner side, and the guiding gear can be driven to rotate by rotating the driving column rod. The driving column rod extends outwards from the assembly column and is flush with the outer column surface of the assembly column; an inner hexagonal groove is formed on the top surface of the driving column rod.

8. The turning clamping tooling for the winding tube of a composite insulator according to claim 1, characterized in that, A limiting structure for restricting the axial movement of the winding tube is also formed on the clamping seat.

9. The turning clamping tooling for the winding tube of the composite insulator according to claim 1, characterized in that, The combination between the clamping part and the embedding part on the clamping unit is an assembled structure, and the combination and assembly method is one of bolt connection, plug-in fit or snap connection.

10. The turning clamping tooling for the winding tube of the composite insulator according to claim 1, wherein, Reinforcing ribs or reinforcing rib plates are also arranged between the clamping part and the embedding part of the clamping unit.

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