Positioning clamp of grooved pipe fitting polishing machine tool and polishing process

Abstract

The invention relates to the technical field of pipe fitting machining, in particular to a positioning clamp of a grooved pipe fitting polishing machine tool and a polishing technology.The positioning clamp comprises a base, a supporting frame, a polishing structure, a rotating base, an abutting block, a supporting rod, a first clamping plate and a second clamping plate; the grinding structure is arranged on one side of the supporting frame, the rotating base is rotationally arranged on the supporting frame, the supporting rod is fixed to the rotating base, and the abutting block is arranged on one side of the supporting rod in a sliding mode and used for pushing a groove pipe fitting to make contact with the supporting rod for pre-fixing. The first clamping plate and the second clamping plate are arranged above the rotating base in a sliding mode and used for fixing the groove pipe fitting. Therefore, the two end faces of the elbow groove pipe fitting can be conveniently polished, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe processing, in particular to a positioning fixture of a grooved pipe polishing machine and a polishing process. Background Art

[0002] The grooved pipe polishing fixture is a tool specially used to fix grooved pipes for surface polishing. Its design purpose is to improve the polishing efficiency and quality while ensuring the safety of the operation.

[0003] Elbow grooved pipe fittings, due to their structural characteristics of forming a certain angle between their two end faces (usually 45° or 90°), present significant technical challenges in actual processing, especially in the polishing process. In particular, high-precision polishing of both end faces, which are often perpendicular or at a specific angle to each other, requires polishing equipment or fixtures that can move the polishing structure in two different directions to complete the processing of each end face.

[0004] This multi-directional polishing requirement makes it difficult for traditional single-axis polishing equipment to meet these requirements. It necessitates the introduction of a control system with multi-axis motion capabilities, such as a rotating platform, an adjustable polishing head, or a CNC robotic arm. This not only increases the complexity and manufacturing cost of the equipment, but also increases the technical requirements and commissioning time. Summary of the Invention

[0005] The purpose of the present invention is to provide a positioning fixture and polishing process for a grooved pipe polishing machine, so as to conveniently polish the two end faces of an elbow grooved pipe and improve work efficiency.

[0006] To achieve the above-mentioned objectives, in the first aspect, the present invention provides a positioning fixture for a grooved pipe polishing machine, comprising a base, a support frame and a grinding structure, the support frame is fixedly connected to the base and is located on the top of the base, the grinding structure is arranged on one side of the support frame, and also includes a rotating seat, a supporting block, a support rod, a first clamping plate and a second clamping plate; the rotating seat is rotatably arranged on the support frame, the support rod is fixed on the rotating seat, the supporting block is slidably arranged on one side of the support rod, and is used to push the grooved pipe to contact the support rod for pre-fixation, and the first clamping plate and the second clamping plate are slidably arranged above the rotating seat for fixing the grooved pipe.

[0007] Among them, the rotating seat includes a rotating seat body and a rotating motor. The rotating seat body is rotatably arranged on the support frame. The output end of the rotating motor is connected to the rotating seat body. A plurality of slots are provided on the rotating seat body. A locking structure is also provided on the support frame. The locking structure is used to slide into the slot to lock the position of the rotating seat body.

[0008] Among them, the locking structure includes a card plate, a third cylinder and a support plate. The card plate is slidably set on the support frame and close to the card slot. The output end of the third cylinder is connected to the card plate. The support plate is fixed on the support frame and supports the card plate.

[0009] Among them, the locking structure also includes an alignment plate, a first gear, a second gear, and a bevel gear group. The first rack is provided on the clamping plate, the alignment plate has a driving rack, and the alignment plate is slidably arranged on one side of the support frame for limiting the groove pipe when placing the groove pipe. The first gear is rotatably arranged on the support frame and meshes with the first rack. The bevel gear group is connected to the first gear, and the second gear is connected to the bevel gear group and meshes with the driving rack.

[0010] Wherein, the supporting block includes a V-shaped block, a sliding support plate, a first screw and a second cylinder, the sliding support plate is slidably arranged on one side of the rotating seat body, the output end of the second cylinder is connected to the sliding support plate, the V-shaped block is slidably arranged on the sliding support plate, the first screw is threadedly connected to the V-shaped block, and is rotatably connected to the sliding support plate.

[0011] The supporting block further comprises a reset elastic member, which is arranged between the second cylinder and the sliding support plate. The sliding support plate is also provided with an adjustment scale, which is used to indicate the adjustment trend of the V-block.

[0012] In which, the support rod includes a support rod body, two contact plates, two control blocks, two pressure rods, a pressure block and a second screw rod. The two control blocks are slidably arranged in the support rod body, and the pressure block is slidably arranged on one side of the support rod body. One end of the two pressure rods is respectively connected to the two control blocks, and the other end of the two pressure rods is connected to the pressure block. The second screw rod is rotatably connected to the support rod body and is threadedly connected to the pressure block. The two contact plates are rotatably arranged on the two control blocks.

[0013] The first clamping plate includes a clamping plate body, a control cylinder and a contact pad. The clamping plate body is slidably arranged above the rotating seat body. The output end of the control cylinder is connected to the clamping plate body. The contact pad is fixed on the clamping plate body.

[0014] Wherein, the positioning fixture of the grooved pipe polishing machine further includes a dust shield, which is fixedly connected to the support frame and is located on one side of the support frame.

[0015] In a second aspect, the present invention further provides a polishing process for a grooved pipe polishing machine tool, which uses the positioning fixture of the grooved pipe polishing machine tool.

[0016] The present invention provides a positioning fixture and polishing process for a grooved pipe polishing machine. The positioning fixture comprises a base, a support frame, and a polishing structure. The base, serving as the foundation of the entire device, possesses excellent stability and load-bearing capacity, supporting the remaining components and ensuring their stability during operation. The support frame is fixedly connected to the base and located on top of the base, providing a mounting base and support for subsequent components. The polishing structure is disposed on one side of the support frame and enables efficient and uniform polishing of the grooved pipe after the fixture has positioned and clamped it. The positioning fixture also includes a rotating seat, a support block, a support rod, a first clamping plate, and a second clamping plate. The rotating seat is rotatably mounted on the support frame, driving the grooved pipe to rotate, allowing for polishing of different surfaces through rotation. The support rod is fixed to the rotating seat and serves as the primary support component for positioning and initial positioning of the grooved pipe. The support block is slidably mounted on one side of the support rod, and its primary function is to push the grooved pipe to be processed into close contact with the support rod, thereby achieving pre-fixation. This abutment block design not only enables rapid initial positioning of the grooved tubing but also effectively prevents deflection or loosening due to uneven force during the subsequent clamping process. The first and second clamping plates are slidably positioned above the rotating seat, allowing relative movement to further clamp and secure the grooved tubing. The sliding clamping plate structure adjusts to the actual diameter of the grooved tubing, achieving adaptive clamping and ensuring uniform clamping force distribution, avoiding damage to the workpiece surface and ensuring stability and safety during the polishing process.

[0017] The positioning fixture of the grooved pipe polishing machine provided by the present invention has the advantages of simple structure, convenient operation, stable clamping, strong applicability, etc., and can significantly improve the positioning accuracy and processing efficiency of the grooved pipe during the polishing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative effort based on these drawings.

[0019] Figure 1 is a structure diagram of a positioning clamp of a groove pipe polishing machine tool of the present application.

[0020] Figure 2 is a right side structure diagram of a positioning clamp of a groove pipe polishing machine tool of the present application.

[0021] Figure 3 is a left side structure diagram of a positioning clamp of a groove pipe polishing machine tool of the present application.

[0022] Figure 4 is Figure 3 is a partial enlarged view of detail B.

[0023] Figure 5 is a sectional structure diagram of a positioning clamp of a groove pipe polishing machine tool of the present application.

[0024] Base 101, support frame 102, polishing structure 103, rotating seat 104, abutting block 105, support rod 106, first clamping plate 107, second clamping plate 108, rotating seat body 109, rotating motor 110, clamping plate 111, third cylinder 112, support plate 113, alignment plate 114, first gear 115, second gear 116, bevel gear set 117, first rack 118, V-shaped block 119, sliding support plate 120, first screw 121, second cylinder 122, reset elastic member 123, adjustment scale 124, support rod body 125, contact plate 126, control block 127, pressing rod 128, pressing block 129, second screw 130, clamping plate body 131, control cylinder 132, contact pad 133, dust shield 134. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0026] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, in the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited. First embodiment

[0027] Please refer to Figures 1 to 5 The present application provides a positioning clamp of a groove pipe polishing machine tool, comprising a base 101, a support frame 102 and a polishing structure 103, the support frame 102 is fixedly connected with the base 101 and located at the top of the base 101, the polishing structure 103 is arranged on one side of the support frame 102, further comprising a rotating seat 104, a resisting block 105, a supporting rod 106, a first clamping plate 107 and a second clamping plate 108; the rotating seat 104 is rotatably arranged on the support frame 102, the supporting rod 106 is fixed on the rotating seat 104, the resisting block 105 is slidably arranged on one side of the supporting rod 106, used for pushing the groove pipe to contact the supporting rod 106 for pre-fixing, the first clamping plate 107 and the second clamping plate 108 are slidably arranged above the rotating seat 104, used for fixing the groove pipe.

[0028] In this embodiment, the positioning clamp comprises a base 101, a support frame 102 and a polishing structure 103. The base 101 is the basic part of the whole device, with good stability and carrying capacity, used for supporting the remaining parts and ensuring its stability during work. The support frame 102 is fixedly connected with the base 101 and located at the top of the base 101, used for providing installation basis and support for subsequent parts. The polishing structure 103 is arranged on one side of the support frame 102, which can efficiently and uniformly polish the groove pipe after the clamp completes positioning and clamping of the groove pipe.

[0029] The positioning clamp further comprises a rotating seat 104, a resisting block 105, a supporting rod 106, a first clamping plate 107 and a second clamping plate 108. Among them, the rotating seat 104 is rotatably arranged on the support frame 102, which can drive the groove pipe to rotate, so that different surfaces can be polished by rotating. The supporting rod 106 is fixed on the rotating seat 104, which is the main supporting part for placing and preliminarily positioning the groove pipe.

[0030] The abutment block 105 is slidably mounted on one side of the support rod 106. Its primary function is to push the grooved pipe to be processed into close contact with the support rod 106, thereby achieving pre-fixation. The design of the abutment block 105 not only allows for rapid initial positioning of the grooved pipe, but also effectively prevents deviation or loosening due to uneven force during the subsequent clamping process.

[0031] Furthermore, the first clamping plate 107 and the second clamping plate 108 are slidably disposed above the rotating base 104, allowing relative movement therebetween to further clamp and secure the grooved tubular. This sliding clamping plate structure can be adjusted based on the actual diameter of the grooved tubular, achieving adaptive clamping and ensuring uniform clamping force distribution, preventing damage to the workpiece surface while maintaining stability and safety during the polishing process.

[0032] In summary, the positioning fixture of the grooved pipe polishing machine provided by the present invention has the advantages of simple structure, easy operation, stable clamping, and strong applicability, and can significantly improve the positioning accuracy and processing efficiency of the grooved pipe during the polishing process.

[0033] The rotating seat 104 includes a rotating seat body 109 and a rotating motor 110. The rotating seat body 109 is rotatably set on the support frame 102. The output end of the rotating motor 110 is connected to the rotating seat body 109. A plurality of slots are set on the rotating seat body 109. A locking structure is also set on the support frame 102. The locking structure is used to slide into the slot to lock the position of the rotating seat body 109.

[0034] The rotating base body 109 is rotatably mounted on the support frame 102 via a bearing or shaft structure, enabling rotational adjustment within a horizontal plane to accommodate the positioning requirements of grooved pipes with different processing angles. The rotating motor 110 is fixedly mounted on one side of the support frame 102, with its output end connected to the rotating base body 109, driving the rotating base body 109 for precise angular adjustment, thereby achieving automated control and improving operational efficiency and positioning accuracy.

[0035] The rotating seat body 109 is uniformly provided with a plurality of slots along its circumference, which may be grooves or holes. A locking structure is also provided on the support frame 102. This locking structure may be a latch-type, pneumatically, or hydraulically driven mechanism that slides into the corresponding slots to mechanically lock the position of the rotating seat body 109. This prevents the rotating seat 104 from shifting due to vibration or external forces during the polishing process, thereby ensuring the stability of the workpiece clamping and the processing accuracy.

[0036] The locking structure includes a card plate 111, a third cylinder 112 and a support plate 113. The card plate 111 is slidably set on the support frame 102 and close to the card slot. The output end of the third cylinder 112 is connected to the card plate 111. The support plate 113 is fixed on the support frame 102 and supports the card plate 111.

[0037] The card plate 111 is slidably mounted on the support frame 102 and is adjacent to the card slot on the rotating seat body 109. Its function is to slide into or out of the card slot, thereby locking and releasing the rotating seat body 109. The third cylinder 112, as a driving component, is fixedly mounted on one side of the support frame 102. Its output end is connected to the card plate 111 and is used to control the forward and backward movement of the card plate 111 to achieve automated locking and unlocking operations. The support plate 113 is fixedly mounted on the support frame 102 to support the card plate 111 and ensure its stability and guidance during the sliding process, preventing it from getting stuck or deflecting due to uneven force.

[0038] The locking structure also includes an alignment plate 114, a first gear 115, a second gear 116, and a bevel gear set 117. A first rack 118 is provided on the clamping plate 111. The alignment plate 114 has a driving rack. The alignment plate 114 is slidably set on one side of the support frame 102 and is used to limit the groove pipe fittings when placing the groove pipe fittings. The first gear 115 is rotatably set on the support frame 102 and engages with the first rack 118. The bevel gear set 117 is connected to the first gear 115, and the second gear 116 is connected to the bevel gear set 117 and engages with the driving rack.

[0039] A first rack 118 is provided on one side of the clamping plate 111, meshing with the first gear 115 to form a transmission connection. When the third cylinder 112 drives the clamping plate 111 to slide, the first rack 118 on the clamping plate 111 rotates the first gear 115, transmitting the motion to the subsequent transmission mechanism. The alignment plate 114 is slidably mounted on one side of the support frame 102, near the grooved pipe placement area. It is used to initially limit and center the grooved pipe before the fixture clamps the workpiece, thereby improving clamping efficiency and accuracy.

[0040] Specifically, when the third cylinder 112 pushes the clamping plate 111 to slide away from the slot, the first gear 115 drives the bevel gear set 117 to rotate, thereby driving the second gear 116 to rotate, driving the alignment plate 114 to approach the grooved pipe to limit the position of the grooved pipe, and then clamping the grooved pipe. After clamping is completed, the third cylinder 112 pushes the clamping plate 111 to move toward the slot, and the alignment plate 114 moves away from the grooved pipe, allowing the grinding structure 103 to grind the end face of the grooved pipe.

[0041] The supporting block 105 includes a V-block 119, a sliding support plate 120, a first screw 121 and a second cylinder 122. The sliding support plate 120 is slidably arranged on one side of the rotating seat body 109, and the output end of the second cylinder 122 is connected to the sliding support plate 120. The V-block 119 is slidably arranged on the sliding support plate 120. The first screw 121 is threadedly connected to the V-block 119 and is rotatably connected to the sliding support plate 120.

[0042] The sliding support plate 120 is slidably mounted on one side of the rotating base body 109, typically utilizing a guide rail or chute structure to achieve smooth guided motion, ensuring good linearity and stability during movement. The second cylinder 122, serving as a driving element, is fixedly mounted on the rotating base body 109. Its output end is connected to the sliding support plate 120, and is used to propel the sliding support plate 120 back and forth in a predetermined direction, thereby driving the entire abutment block 105 toward or away from the grooved pipe, achieving initial pressure and positioning of the workpiece.

[0043] The V-block 119 is slidably mounted on top of or in front of the sliding support plate 120. Its V-shaped surface allows for a precise fit with round or shaped pipes of varying diameters, achieving self-centering and improving clamping accuracy and reliability. The first screw 121 is threadedly connected to the V-block 119 and rotationally coupled to the sliding support plate 120. The operator can fine-tune the V-block 119 relative to the sliding support plate 120 by rotating the first screw 121, thereby accommodating grooved pipes of varying sizes and achieving precise adjustment.

[0044] The abutting block 105 further includes a reset elastic member 123 , which is disposed between the second cylinder 122 and the sliding support plate 120 . The sliding support plate 120 is further provided with an adjustment scale 124 , which is used to indicate the adjustment trend of the V-block 119 .

[0045] The abutment block 105 also includes a reset elastic member 123, which is preferably a compression spring or an elastic rubber pad, and is disposed between the second cylinder 122 and the sliding support plate 120. It is used to automatically reset the sliding support plate 120 and the V-block 119 thereon to their initial positions after the second cylinder 122 releases pressure, thereby preventing components from being stuck or damaged due to mechanical inertia or external forces, and also improving the safety and reusability of the equipment. An adjustment scale 124 is also provided on the sliding support plate 120. The adjustment scale 124 can be a scale with lines or a digital display device, which is used to indicate the relative movement position of the V-block 119, helping the operator to intuitively understand the current adjustment trend and clamping range of the V-block 119, thereby achieving precise control and avoiding problems of clamping being too tight or too loose due to misoperation.

[0046] The support rod 106 includes a support rod body 125, two contact plates 126, two control blocks 127, two pressure rods 128, a pressure block 129 and a second screw 130. The two control blocks 127 are slidably arranged in the support rod body 125, and the pressure block 129 is slidably arranged on one side of the support rod body 125. One end of the two pressure rods 128 is respectively connected to the two control blocks 127, and the other end of the two pressure rods 128 is connected to the pressure block 129. The second screw 130 is rotatably connected to the support rod body 125 and is threadedly connected to the pressure block 129. The two contact plates 126 are rotatably arranged on the two control blocks 127.

[0047] The support rod body 125 is the main structure of the entire support rod 106 and is typically made of high-strength metal, offering excellent rigidity and deformation resistance. It has an internal cavity for accommodating two control blocks 127. These control blocks 127 can slide horizontally along the guideways or rails within the support rod body 125, thereby providing adaptive support for grooved pipes of varying diameters.

[0048] Two pressure rods 128 are mounted on either side of the support rod body 125, one end connected to the corresponding control block 127 and the other end hinged to a pressure block 129. Pressure block 129 is slidably mounted on one side of the support rod body 125, acting as an external force application point. Its sliding motion drives the linkage mechanism of pressure rods 128. When pressure block 129 moves, pressure rods 128 transmit the motion to control blocks 127, causing the two control blocks 127 to move inward or outward, thereby changing the position and angle of contact plate 126.

[0049] The second screw 130 extends through the support rod body 125 and is rotationally connected thereto, while also forming a threaded engagement with the pressure block 129. Rotating the second screw 130 precisely controls the position of the pressure block 129 on the support rod body 125, thereby synchronously driving the pressure rod 128 and the control block 127 to adjust the support state. The screw is preferably equipped with a handwheel or electric drive to facilitate manual or automatic adjustment, improving operational efficiency and precision.

[0050] Furthermore, two contact plates 126 are rotatably mounted on two control blocks 127. Their surfaces can be designed as flat, curved, or with a multi-point contact structure, as needed, to accommodate grooved pipes of varying shapes. A rotating shaft structure is provided between the contact plates 126 and the control blocks 127, and can be equipped with a damping adjustment device or elastic reset mechanism. This allows the contact plates 126 to rotate freely within a certain range, automatically conforming to the workpiece's outer wall, improving support stability and reducing damage caused by concentrated clamping stress.

[0051] The first clamping plate 107 includes a clamping plate body 131, a control cylinder 132 and a contact pad 133. The clamping plate body 131 is slidably arranged above the rotating seat body 109. The output end of the control cylinder 132 is connected to the clamping plate body 131. The contact pad 133 is fixed on the clamping plate body 131.

[0052] The splint body 131 is slidably arranged above the rotating seat body 109 through a slide rail or guide groove structure, and can move horizontally along a set direction to realize the clamping and releasing operation of the grooved pipe fitting. Its movement process is smooth and reliable, ensuring that the clamping action is accurate and in place. The control cylinder 132 is fixedly installed on the rotating seat body 109 as a power drive element, and its output end is connected to the splint body 131, which is used to push the splint body 131 toward or away from the second splint 108, thereby realizing the automatic clamping or releasing function of the grooved pipe fitting. A contact pad 133 is provided on the inner side surface of the splint body 131. The contact pad 133 is made of a wear-resistant, non-slip material with a certain elasticity, such as rubber, polyurethane or engineering plastics, which can effectively increase the friction between the splint and the grooved pipe fitting, prevent the workpiece from slipping or deflecting during the polishing process, and avoid damage to the pipe surface due to excessive clamping force, thereby protecting the appearance quality of the workpiece.

[0053] The positioning fixture of the grooved pipe polishing machine further includes a dust shield 134 , which is fixedly connected to the support frame 102 and is located on one side of the support frame 102 .

[0054] The positioning fixture of the grooved pipe polishing machine also includes a dust shield 134, a protective structural component preferably made of metal or high-strength engineering plastic. The dust shield 134 is fixedly connected to the support frame 102 and is located on one side of the support frame 102, near the polishing structure 103 or the clamping area. Its primary function is to prevent flying contaminants such as grinding chips, dust, and coolant from entering the fixture or other precision components of the equipment during the polishing process, thereby reducing equipment wear, extending its service life, and improving the cleanliness and safety of the working environment. Second embodiment

[0055] The present invention also provides a polishing process for a grooved pipe polishing machine tool, which adopts the positioning fixture of the grooved pipe polishing machine tool.

[0056] The polishing process comprises the following steps: The grooved pipe to be polished is placed on support rod 106. The second cylinder 122 in support block 105 drives the sliding support plate 120, which in turn moves the V-block 119 toward the workpiece. The V-shaped structure automatically centers the workpiece and provides initial tightening, allowing the grooved pipe to fit against support rod 106 and complete pre-fixation. During this process, the adjustment scale 124 helps the operator intuitively understand the adjustment trend of the V-block 119 and ensure proper clamping.

[0057] The control cylinders 132 on the first clamping plate 107 and the second clamping plate 108 are activated to drive the clamping plate body 131 to move, so that the contact pad 133 is closely attached to the outer wall of the grooved pipe fitting to achieve clamping and fixing.

[0058] According to the processing angle requirements of the grooved pipe fittings, the rotating motor 110 is started to drive the rotating seat body 109 to rotate to the appropriate position, and the third cylinder 112 in the locking structure pushes the clamping plate 111 into the corresponding slot to achieve mechanical locking of the rotating seat body 109 to prevent deviation or shaking during subsequent processing, thereby ensuring the stability of the entire clamping system.

[0059] Once the grooved pipe is securely clamped and the angle is adjusted, the polishing mechanism 103 is activated to begin polishing. The polishing mechanism 103 can be equipped with multiple polishing heads as needed, each for fine-tuning different groove locations. The fixture's excellent clamping stability and adaptive capabilities ensure uniform pressure and a stable trajectory during polishing, significantly improving polishing quality and consistency.

[0060] After polishing is completed, the control system sequentially releases the clamping cylinder, unlocks the locking structure, and restores the movable parts to their initial state by resetting the elastic member 123. Subsequently, a manual or robotic arm removes the polished grooved pipe, completing a processing cycle.

[0061] In summary, the polishing process of the grooved pipe polishing machine provided by the present invention, combined with a dedicated positioning fixture, enables automated control of the entire process, from workpiece clamping, angle adjustment, automatic alignment, polishing, and fixture resetting. This process offers advantages such as ease of operation, precise positioning, reliable clamping, and high polishing quality. This process is particularly suitable for mass production of grooved pipes with complex shapes, multiple specifications, and high-precision requirements, and has broad application prospects and promotional value.

[0062] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of the rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A positioning fixture for a grooved pipe polishing machine, comprising a base, a support frame and a grinding structure, wherein the support frame is fixedly connected to the base and is located on the top of the base, and the grinding structure is arranged on one side of the support frame, characterized in that: It also includes a rotating seat, a holding block, a support rod, a first clamping plate and a second clamping plate; The cam is fixed to the rotating seat, and the abutment block is slidably arranged on one side of the support rod for pushing the groove pipe fitting to contact the support rod for pre-fixing. The first clamping plate and the second clamping plate are slidably arranged above the rotating seat for fixing the groove pipe fitting; the support rod includes a support rod body, two contact plates, two control blocks, two pressure rods, a pressure block and a second screw, and the two control blocks are slidably arranged in the support rod body, and the pressure block is slidably arranged on one side of the support rod body, and one end of the two pressure rods is respectively connected to the two control blocks, and the other end of the two pressure rods is connected to the pressure block, the second screw is rotatably connected to the support rod body and threadedly connected to the pressure block, and the two contact plates are rotatably arranged on the two control blocks.

2. A positioning fixture for a grooved pipe polishing machine according to claim 1, characterized in that: The rotating seat includes a rotating seat body and a rotating motor. The rotating seat body is rotatably arranged on the support frame. The output end of the rotating motor is connected to the rotating seat body. A plurality of slots are provided on the rotating seat body. A locking structure is also provided on the support frame. The locking structure is used to slide into the slot to lock the position of the rotating seat body.

3. A positioning fixture for a grooved pipe polishing machine as claimed in claim 2, characterized in that: The locking structure includes a card plate, a third cylinder and a support plate. The card plate is slidably arranged on the support frame and close to the card slot. The output end of the third cylinder is connected to the card plate. The support plate is fixed on the support frame and supports the card plate.

4. A positioning fixture for a grooved pipe polishing machine as claimed in claim 3, characterized in that: The locking structure also includes an alignment plate, a first gear, a second gear, and a bevel gear set. A first rack is provided on the clamping plate, and the alignment plate has a driving rack. The alignment plate is slidably arranged on one side of the support frame, and is used to limit the groove pipe fitting when placing the groove pipe fitting. The first gear is rotatably arranged on the support frame and meshes with the first rack. The bevel gear set is connected to the first gear, and the second gear is connected to the bevel gear set and meshes with the driving rack.

5. A positioning fixture for a grooved pipe polishing machine as claimed in claim 4, characterized in that: The supporting block includes a V-shaped block, a sliding support plate, a first screw and a second cylinder. The sliding support plate is slidably arranged on one side of the rotating seat body. The output end of the second cylinder is connected to the sliding support plate. The V-shaped block is slidably arranged on the sliding support plate. The first screw is threadedly connected to the V-shaped block and is rotatably connected to the sliding support plate.

6. A positioning fixture for a grooved pipe polishing machine as claimed in claim 5, characterized in that: The supporting block further includes a reset elastic member, which is arranged between the second cylinder and the sliding support plate. The sliding support plate is also provided with an adjustment scale, which is used to indicate the adjustment trend of the V-shaped block.

7. A positioning fixture for a grooved pipe polishing machine according to claim 6, characterized in that: The first clamping plate includes a clamping plate body, a control cylinder and a contact pad. The clamping plate body is slidably arranged above the rotating seat body. The output end of the control cylinder is connected to the clamping plate body. The contact pad is fixed on the clamping plate body.

8. A positioning fixture for a grooved pipe polishing machine according to claim 7, characterized in that: The positioning fixture of the grooved pipe polishing machine also includes a dust shield, which is fixedly connected to the support frame and is located on one side of the support frame.

9. A polishing process for a grooved pipe polishing machine, characterized in that: A positioning fixture for a grooved pipe polishing machine tool according to any one of claims 1 to 8 is used.

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