Split type clamp with split type gear transmission structure

Abstract

The invention discloses a split type clamp with a split type gear transmission structure and a manufacturing method thereof.The split type clamp comprises an annular pressing mechanism, a split type clamping piece and the split type gear transmission structure, an upper pressing roller and a lower supporting roller are arranged on the inner wall of the annular pressing mechanism, and the split type clamping piece is arranged in the annular pressing mechanism; the outer wall of the split type clamping piece is provided with a roller path which is concave inwards, a workpiece locking position is arranged on the outer wall of the split type clamping piece, a workpiece locking pin is arranged at the workpiece locking position, the middle of the split type clamping piece is a clamping position which is through front and back, and the split type clamping piece comprises an upper clamp and a lower clamp. The split type gear transmission structure is arranged at one end of the split type clamping piece through a positioning pin, and the split type gear transmission structure comprises an upper half tooth and a lower half tooth; when the split type clamp with the split type gear transmission structure is manufactured, a pin hole positioning method is selected for machining, and stress is eliminated. The problem that an existing gear transmission structure clamp is generally an integral gear clamp is solved.

Description

Technical Field

[0001] The invention relates to the field of gear transmission structure fixtures, in particular to a split fixture with a split gear transmission structure. Background Art

[0002] With the development of science and technology, automated and robotic production has become very common. Applying automated and robotic technology to some automated cutting fields is also a common application. When cutting with automated and robotic technology, a combined gear fixture is usually required to fix the material to be processed. The existing structure mostly uses an integral gear fixture, and there are few transmission structures that use split gear structures and form a rotating body structure. The main reason is that, with the current commonly used processing methods, for the structure of incomplete gear transmission, first of all, no complete rotational motion is formed during the use process, and the rotation angle used is less than 180°. Secondly, this split gear structure, due to its split nature, is very seriously released after cutting during processing, and stress deformation is prone to occur, which makes it difficult for the split structures to fit well after assembly. Because of this, this type of structure is rarely used in the processing process, and there is no mature processing process for the corresponding processing method. However, this split gear structure has obvious advantages over the integral gear structure in actual application, because it is easy to lift part of the structure to clamp and fix the component. Summary of the invention

[0003] The object of the present invention is to provide a split clamp with a split gear transmission structure and a manufacturing method thereof, so as to solve the problem that the existing gear transmission structure clamps are generally integral gear clamps.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket.

[0005] Taking the rectangular tubular workpiece as an example, the clamping process is to first use the robotic arm to lift the assembly of the upper half tooth and the upper fixture, and then place the rectangular tubular workpiece in the cavity of the large fixture and the lower half tooth, and then put down the upper half tooth and the small fixture so that the inclined surface of the upper half tooth fits with the inclined surface of the lower half tooth, and the inclined surface of the small fixture fits with the inclined surface of the large fixture, and then the annular clamping mechanism of the pressure cover is locked to fix the entire fixture, and then the rectangular tubular workpiece on the fixture is locked by the workpiece locking pin to complete the work of fixing the workpiece, and finally, through the meshing of the active gear and the split gear transmission structure, the rotational motion of the fixture structure is formed, thereby driving the rotation of the rectangular tubular workpiece to complete the action; when the rectangular tubular workpiece is placed in the cavity during clamping, the stability of the clamp body and the workpiece is ensured by the weight of the rectangular tubular workpiece itself.

[0006] The upper half teeth and the upper fixture are positioned by cylindrical positioning pins and screwed together. The inclined surfaces of the two parts overlap. The lower half teeth and the lower fixture are positioned by cylindrical positioning pins and screwed together. The inclined surfaces overlap. When in use, the inclined surfaces of the upper and lower fixtures fit together to form a complete rotating body structure. The upper half teeth and the lower half teeth form a complete gear structure and can effectively mesh. The way to fix the fixture is to use an annular clamping mechanism, and use multiple groups of rollers on the inner wall of the annular clamping mechanism as support points to install the assembled clamp body into the middle contour. The lower support roller is used to support the clamp body, and the upper clamping roller presses the clamp body. The raceway is 1-2mm heavier than the large outer circle to ensure that no axial transmission occurs when the roller and the raceway rotate relative to each other, which overall limits the radial and axial freedom of the clamp body.

[0007] The upper clamping roller and the lower supporting roller are both bearing structures, which are movable with the raceway, so the clamp can easily complete the rotational motion. The raceway is designed to be the axial center of gravity after the combination, ensuring that the clamp can be stable after being fixed.

[0008] As a further preferred embodiment of the present invention, the annular clamping mechanism includes a pressure cover and a support seat, one end of the pressure cover is rotatably connected to one end of the support seat, and the other ends of the pressure cover and the support seat are connected via a detachable connection structure.

[0009] As a further preferred embodiment of the present invention, the detachable connection structure includes an upper connecting plate and a locking pin of a clamping mechanism, the outer end of the upper connecting plate is provided with a locking pin connecting through hole, the outer end of the locking pin connecting through hole is provided with a locking pin entry opening, and the lower end of the locking pin of the clamping mechanism is rotatably connected to the support seat.

[0010] As a further preferred embodiment of the present invention, the workpiece locking position is recessed toward the middle of the split clamping member, and the depth of the recessed workpiece locking position is greater than the length of the pin head after the workpiece locking pin locks the workpiece.

[0011] A method for making any of the above-mentioned fixtures with a split gear transmission structure comprises the following steps: A. machining and forming an upper fixture and a lower fixture respectively, after machining and forming, the outer surface of the upper fixture retains sufficient machining allowance, the cavity of the lower fixture has been preliminarily cut after machining and forming, and sufficient machining allowance is retained at the cavity and outer surface of the lower fixture; B. by controlling the machining allowance and the outer dimensions, the theoretical center and the outer reference of the theoretical center of the combined fixture are found, and then the pin hole of the locating pin is machined. After the pin hole of the locating pin is machined, the excess allowance of the cavity of the lower fixture is cut with the pin hole of the locating pin as the reference to ensure the size of the cavity, and after completion, a second heat treatment and aging treatment is performed; C. using the outer circle of the component formed by the combination of the upper fixture and the lower fixture as the reference, Re-correct the pin hole of the locating pin, use the pin hole of the locating pin as a reference, and use a slow-feeding wire-cutting device to cut the inclined surface where the upper fixture and the lower fixture meet to ensure that the two inclined surfaces of the upper fixture and the lower fixture fit perfectly; D. After completing the process of step C, fix the processed upper and lower fixtures to the prepared overall disc-shaped tooling, and then clamp the overall disc-shaped tooling. After clamping, use a deep lathe and a grinder to fine-process the outer circle and raceway groove of the split gear transmission structure composed of the upper and lower fixtures. After the fixture of the split gear transmission structure meets the use requirements, the size of the locating pin pin hole of the fixture of the split gear transmission structure is processed to the size of the pin hole used for assembly, and strictly control the hole spacing tolerance to ensure the accuracy requirements of the parts, and finally remove it from the overall disc-shaped tooling.

[0012] The difficulties in processing the fixture in the prior art include: 1. The problem of datum selection. After the gear and the fixture are combined, they are both rotating parts, but before the combination, they are split structures with a square cavity in the center. The processing datums for the rotating body are usually selected as the outer circle, the inner hole, and the center hole. However, this structure is processed separately, and the above datums cannot be used. If combined processing is selected, the two groups of parts have no connecting medium and are difficult to be combined into a whole. The use of conventional datums is difficult to complete the processing, and the selection of processing datums is difficult; 2. The influence of processing stress and deformation. The openings of the lower fixture and the lower half-tooth parts are large, and there is a large rectangular cavity in the center. After the processing is completed, the parts are divided, and the stress release is very serious. Referring to the outer contour analysis of the parts, after the parts are separated, the lower fixture and the lower gear will deform in the direction of stress release, affecting the angle and position of the bevel. The upper fixture and the upper gear do not have stress deformation, resulting in the difficulty of the lower fixture and the upper fixture After the bevel is combined, it is difficult to fully fit, and the lower gear and the upper gear After the bevel is combined, it is difficult to fully fit, making it difficult to pass the part processing. During the processing process, the problem of processing deformation must be guaranteed in advance to ensure the final accuracy.

[0013] In this scheme, the solution proposed for problem one is as follows: select the pin hole positioning method, use the pin hole of the locating pin as the processing reference, and the dimensional accuracy of the pin hole is determined by the center of rotation. According to the use requirements, the accuracy requirements for the cavity during clamping are relatively low, and the main accuracy is the accuracy of the outer circle of the combined fixture and the gear. Therefore, first find the theoretical center of the upper fixture and the lower fixture combined, and then use the theoretical center to process the pin hole of the locating pin, strictly control the size between the pin holes and the pin hole and the theoretical center, and use the pin hole of the locating pin as the processing reference throughout the entire processing flow to ensure the unity of the processing reference of the parts, complete the processing of the outer circle, tooth shape, and fitting bevel of the parts, and realize a series of use requirements and usage accuracy of bevel fitting, gear meshing, and fixture rotation during use.

[0014] Then, for the second problem, the method adopted in this solution is mainly: first cut and shape the lower fixture cavity to release excess stress, allow it to produce stress deformation, and then perform aging treatment in the heat treatment process to further release the stress. Finally, after the pin hole of the locating pin is processed, the pin hole of the locating pin is used as a reference to cut the excess margin of the lower fixture cavity to ensure the size of the cavity. After completion, a second heat treatment aging treatment is performed, which can fully release the processing stress; leave sufficient margin when cutting the lower fixture cavity and the shape, so as to ensure that the shape and dimensions of the part can be corrected by cutting the remaining margin after deformation.

[0015] As a further preferred embodiment of the present invention, after the processing and forming in step A, a first heat treatment and aging treatment is required.

[0016] As a further preference of the present invention, the surface of the overall disc-shaped tooling in step D is provided with tooling pin holes processed according to the pin hole positions of each locating pin of the fixture, and the hole spacing is precisely controlled. The upper fixture and the lower fixture are fixed to the overall disc-shaped tooling with screws based on the tooling pin holes.

[0017] As a further preferred embodiment of the present invention, the upper clamp and the lower clamp in step D are combined with the processed split gear transmission structure after processing, using the positioning pin as the positioning reference during the combination to form a complete combination, and finally assembled with the annular clamping mechanism to form a complete combination clamp body.

[0018] The processing method of the split gear transmission structure is the same as the processing idea of ​​the upper fixture and the lower fixture.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: 1. The structure is split type, which can easily lift the upper fixture and the upper half tooth, and put the workpiece to be processed into it for clamping and fixing.

[0020] 2. When in use, the upper clamp and the lower clamp are fitted with inclined surfaces to form a complete rotating body structure, and the upper half teeth and the lower half teeth form a complete gear structure, which can effectively engage.

[0021] 3. During the processing, the pin hole positioning method is selected, and the pin hole of the locating pin is used as the processing reference. The dimensional accuracy of the pin hole is determined by the rotation center. According to the use requirements, the accuracy requirements for the cavity during clamping are relatively low, and the main accuracy is the accuracy of the outer circle of the combined fixture and the gear. Therefore, first find the theoretical center of the upper and lower fixtures combined, and then use the theoretical center to process the pin hole of the locating pin. Strictly control the size between the pin holes and the pin hole and the theoretical center. The method of using the pin hole of the locating pin as the processing reference runs through the entire processing flow to ensure the unity of the processing reference of the parts, complete the processing of the outer circle, tooth shape, and fitting bevel of the parts, and realize a series of use requirements and use accuracy of bevel fitting, gear meshing, and fixture rotation during use.

[0022] 4. First, cut and shape the lower fixture cavity to release excess stress and allow it to produce stress deformation, and then perform aging treatment in the heat treatment process to further release the stress. Finally, after the pin hole of the locating pin is processed, use the pin hole of the locating pin as a reference to cut the excess margin of the lower fixture cavity to ensure the size of the cavity. After completion, perform a second heat treatment aging treatment to fully release the processing stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 for Figure 1 Exploded diagram.

[0025] Figure 3 for Figure 1 Exploded view from another perspective.

[0026] Figure 4 It is a schematic diagram of stress release of the lower clamp of the present invention.

[0027] Annular clamping mechanism-1, pressure cover-11, support seat-12, upper clamping roller-111, lower support roller-112, split clamp-2, upper clamp-21, lower clamp-22, raceway-221, workpiece locking position-222, split gear transmission structure-3, upper half tooth-31, lower half tooth-32, workpiece locking pin-4, positioning pin-5, detachable connection structure-6, upper connecting plate-61 and clamping mechanism locking pin-62. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Specific embodiment 1: Figure 1 , Figure 2 , Figure 3 , Figure 4 A split clamp with a split gear transmission structure is shown, comprising an annular clamping mechanism 1, a split clamping member 2 and a split gear transmission structure 3. Upper clamping rollers 111 are provided on both sides of the upper inner wall of the annular clamping mechanism 1, and lower support rollers 112 are provided on both sides of the lower inner wall of the annular clamping mechanism. The split clamping member 2 is arranged in the annular clamping mechanism 1, and an inwardly concave raceway 221 is provided on the outer wall of the split clamping member 2 at the position of the upper clamping roller 111 and the lower support roller 112. The four positions of the outer wall of the split clamping member 2 are also provided with workpiece locking positions 222, and the workpiece locking pins 4 are provided at the workpiece locking positions 222. The middle part of the split clamping member 2 is a clamping position that passes through from front to back. The split clamping member 2 includes an upper clamp 21 and a lower clamp 22 that are arranged in sequence from top to bottom. The split gear transmission structure 3 is arranged at one end of the split clamping member 2 through a positioning pin 5. The split gear transmission structure 3 includes an upper half tooth 31 and a lower half tooth 32 that are arranged corresponding to the upper clamp 21 and the lower clamp 22.

[0035] Taking the rectangular tubular workpiece as an example, the clamping process is to first use the robotic arm to lift the assembly of the upper half tooth and the upper fixture, and then place the rectangular tubular workpiece in the cavity of the large fixture and the lower half tooth, and then put down the upper half tooth and the small fixture so that the inclined surface of the upper half tooth fits with the inclined surface of the lower half tooth, and the inclined surface of the small fixture fits with the inclined surface of the large fixture, and then the annular clamping mechanism of the pressure cover is locked to fix the entire fixture, and then the rectangular tubular workpiece on the fixture is locked by the workpiece locking pin to complete the work of fixing the workpiece, and finally, through the meshing of the active gear and the split gear transmission structure, the rotational motion of the fixture structure is formed, thereby driving the rotation of the rectangular tubular workpiece to complete the action; when the rectangular tubular workpiece is placed in the cavity during clamping, the stability of the clamp body and the workpiece is ensured by the weight of the rectangular tubular workpiece itself.

[0036] The upper half teeth and the upper fixture are positioned by cylindrical positioning pins and screwed together. The inclined surfaces of the two parts overlap. The lower half teeth and the lower fixture are positioned by cylindrical positioning pins and screwed together. The inclined surfaces overlap. When in use, the inclined surfaces of the upper and lower fixtures fit together to form a complete rotating body structure. The upper half teeth and the lower half teeth form a complete gear structure and can effectively mesh. The way to fix the fixture is to use an annular clamping mechanism, and use multiple groups of rollers on the inner wall of the annular clamping mechanism as support points to install the assembled clamp body into the middle contour. The lower support roller is used to support the clamp body, and the upper clamping roller presses the clamp body. The raceway is 1-2mm heavier than the large outer circle to ensure that no axial transmission occurs when the roller and the raceway rotate relative to each other, which overall limits the radial and axial freedom of the clamp body.

[0037] The upper clamping roller and the lower supporting roller are both bearing structures, which are movable with the raceway, so the clamp can easily complete the rotational motion. The raceway is designed to be the axial center of gravity after the combination, ensuring that the clamp can be stable after being fixed. Specific embodiment 2: This embodiment further illustrates the annular clamping mechanism based on the specific embodiment 1. The annular clamping mechanism 1 includes a pressure cover 11 and a support seat 12. One end of the pressure cover 11 is rotatably connected to one end of the support seat 12, and the other end of the pressure cover 11 and the support seat 12 are connected via a detachable connecting structure 6. Specific embodiment 3: This embodiment further illustrates the detachable connection structure based on the specific embodiment 1. The detachable connection structure 6 includes an upper connecting plate 61 and a clamping mechanism locking pin 62. The outer end of the upper connecting plate 61 is provided with a locking pin connecting through hole. The outer end of the locking pin connecting through hole is provided with a locking pin entry opening. The lower end of the clamping mechanism locking pin 62 is rotatably connected to the support seat 12. Specific embodiment 4: This embodiment further illustrates the workpiece locking position based on the specific embodiment 1. The workpiece locking position 222 is recessed toward the middle of the split clamping member, and the depth of the recess of the workpiece locking position 222 is greater than the length of the pin head after the workpiece locking pin locks the workpiece. Specific embodiment 5: A method for making any of the above-mentioned fixtures with a split gear transmission structure comprises the following steps: A. machining and forming an upper fixture and a lower fixture respectively, after machining and forming, the outer surface of the upper fixture retains sufficient machining allowance, the cavity of the lower fixture has been preliminarily cut after machining and forming, and sufficient machining allowance is retained at the cavity and outer surface of the lower fixture; B. by controlling the machining allowance and the outer dimensions, the theoretical center and the outer reference of the theoretical center of the combined fixture are found, and then the pin hole of the locating pin is machined. After the pin hole of the locating pin is machined, the excess allowance of the cavity of the lower fixture is cut with the pin hole of the locating pin as the reference to ensure the size of the cavity, and after completion, a second heat treatment and aging treatment is performed; C. using the outer circle of the component formed by the combination of the upper fixture and the lower fixture as the reference, Re-correct the pin hole of the locating pin, use the pin hole of the locating pin as a reference, and use a slow-feeding wire-cutting device to cut the inclined surface where the upper fixture and the lower fixture meet to ensure that the two inclined surfaces of the upper fixture and the lower fixture fit perfectly; D. After completing the process of step C, fix the processed upper and lower fixtures to the prepared overall disc-shaped tooling, and then clamp the overall disc-shaped tooling. After clamping, use a deep lathe and a grinder to fine-process the outer circle and raceway groove of the split gear transmission structure composed of the upper and lower fixtures. After the fixture of the split gear transmission structure meets the use requirements, the size of the locating pin pin hole of the fixture of the split gear transmission structure is processed to the size of the pin hole used for assembly, and strictly control the hole spacing tolerance to ensure the accuracy requirements of the parts, and finally remove it from the overall disc-shaped tooling.

[0042] The difficulties in processing the fixture in the prior art include: 1. The problem of datum selection. After the gear and the fixture are combined, they are both rotating parts, but before the combination, they are split structures with a square cavity in the center. The processing datums for the rotating body are usually selected as the outer circle, the inner hole, and the center hole. However, this structure is processed separately, and the above datums cannot be used. If combined processing is selected, the two groups of parts have no connecting medium and are difficult to be combined into a whole. The use of conventional datums is difficult to complete the processing, and the selection of processing datums is difficult; 2. The influence of processing stress and deformation. The openings of the lower fixture and the lower half-tooth parts are large, and there is a large rectangular cavity in the center. After the processing is completed, the parts are divided, and the stress release is very serious. Referring to the outer contour analysis of the parts, after the parts are separated, the lower fixture and the lower gear will deform in the direction of stress release, affecting the angle and position of the bevel. The upper fixture and the upper gear do not have stress deformation, resulting in the difficulty of the lower fixture and the upper fixture After the bevel is combined, it is difficult to fully fit, and the lower gear and the upper gear After the bevel is combined, it is difficult to fully fit, making it difficult to pass the part processing. During the processing process, the problem of processing deformation must be guaranteed in advance to ensure the final accuracy.

[0043] In this scheme, the solution proposed for problem one is as follows: select the pin hole positioning method, use the pin hole of the locating pin as the processing reference, and the dimensional accuracy of the pin hole is determined by the center of rotation. According to the use requirements, the accuracy requirements for the cavity during clamping are relatively low, and the main accuracy is the accuracy of the outer circle of the combined fixture and the gear. Therefore, first find the theoretical center of the upper fixture and the lower fixture combined, and then use the theoretical center to process the pin hole of the locating pin, strictly control the size between the pin holes and the pin hole and the theoretical center, and use the pin hole of the locating pin as the processing reference throughout the entire processing flow to ensure the unity of the processing reference of the parts, complete the processing of the outer circle, tooth shape, and fitting bevel of the parts, and realize a series of use requirements and usage accuracy of bevel fitting, gear meshing, and fixture rotation during use.

[0044] Then, for the second problem, the method adopted in this solution is mainly: first cut and shape the lower fixture cavity to release excess stress, allow it to produce stress deformation, and then perform aging treatment in the heat treatment process to further release the stress. Finally, after the pin hole of the locating pin is processed, the pin hole of the locating pin is used as a reference to cut the excess margin of the lower fixture cavity to ensure the size of the cavity. After completion, a second heat treatment aging treatment is performed, which can fully release the processing stress; leave sufficient margin when cutting the lower fixture cavity and the shape, so as to ensure that the shape and dimensions of the part can be corrected by cutting the remaining margin after deformation. Specific embodiment 6: This embodiment further illustrates step A on the basis of specific embodiment 5. In step A, a first heat treatment and aging treatment is required after processing and forming. Specific embodiment 7: This embodiment further explains step D on the basis of specific embodiment 5. The surface of the overall disc-shaped tooling in step D is provided with tooling pin holes processed according to the pin hole positions of each locating pin of the fixture. The hole spacing is precisely controlled. The upper fixture and the lower fixture are fixed to the overall disc-shaped tooling with screws based on the tooling pin holes. Specific embodiment 8: This embodiment further illustrates step D on the basis of specific embodiment 5. After the upper clamp and the lower clamp in step D are processed, they are combined with the processed split gear transmission structure, and the positioning pins are used as the positioning reference during the combination to form a complete combination. Finally, the annular clamping mechanism is assembled to form a complete combined clamp body.

[0048] The processing method of the split gear transmission structure is the same as the processing idea of ​​the upper fixture and the lower fixture.

[0049] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A split-type clamp with a split-type gear transmission structure, characterized in that: The invention comprises an annular clamping mechanism (1), a split clamping member (2) and a split gear transmission structure (3), wherein upper clamping rollers (111) are provided on both sides of the upper inner wall of the annular clamping mechanism (1), and lower support rollers (112) are provided on both sides of the lower inner wall of the annular clamping mechanism, the split clamping member (2) is arranged in the annular clamping mechanism (1), and an inwardly recessed rolling track (221) is provided on the outer wall of the split clamping member (2) at the position of the upper clamping roller (111) and the lower support roller (112), and the outer wall of the split clamping member (2) is provided with a plurality of rollers (221) on the outer wall thereof. The split clamping member (2) is also provided with a workpiece locking position (222), and a workpiece locking pin (4) is provided at the workpiece locking position (222). The middle part of the split clamping member (2) is a clamping position that passes through from front to back. The split clamping member (2) comprises an upper clamp (21) and a lower clamp (22) that are arranged in sequence from top to bottom. The split gear transmission structure (3) is arranged at one end of the split clamping member (2) through a positioning pin (5). The split gear transmission structure (3) comprises an upper half tooth (31) and a lower half tooth (32) that are arranged corresponding to the upper clamp (21) and the lower clamp (22).

2. The split clamp with split gear transmission structure according to claim 1, characterized in that: The annular clamping mechanism (1) comprises a pressure cover (11) and a support seat (12), one end of the pressure cover (11) and one end of the support seat (12) are rotatably connected, and the other ends of the pressure cover (11) and the support seat (12) are connected via a detachable connection structure (6).

3. The split clamp with split gear transmission structure according to claim 2, characterized in that: The detachable connection structure (6) comprises an upper connection plate (61) and a clamping mechanism locking pin (62); the outer end of the upper connection plate (61) is provided with a locking pin connection through hole; the outer end of the locking pin connection through hole is provided with a locking pin entry opening; the lower end of the clamping mechanism locking pin (62) is rotatably connected to the support seat (12).

4. The split clamp with split gear transmission structure according to claim 1, characterized in that: The workpiece locking position (222) is recessed toward the middle of the split clamping member, and the depth of the recess of the workpiece locking position (222) is greater than the length of the pin head after the workpiece locking pin locks the workpiece.

5. A method for manufacturing a clamp with a split gear transmission structure according to any one of claims 1 to 4, characterized in that: The method comprises the following steps: A. machining and molding the upper fixture and the lower fixture respectively. After machining and molding, the outer surface of the upper fixture retains sufficient machining allowance. After machining and molding, the cavity of the lower fixture has been preliminarily cut, and sufficient machining allowance is retained at the cavity and the outer surface of the lower fixture; B. By controlling the machining allowance and the outer dimensions, the theoretical center and the outer reference of the theoretical center of the combined fixture are found, and then the pin hole of the locating pin is machined. After the pin hole of the locating pin is machined, the excess allowance of the cavity of the lower fixture is cut based on the pin hole of the locating pin to ensure the size of the cavity, and a second heat treatment and aging treatment is performed after completion; C. Based on the outer circle of the component formed by the combination of the upper fixture and the lower fixture, the pin hole of the locating pin is corrected to locate the The pin hole of the pin is used as the reference, and the slow wire cutting equipment is used to cut the inclined surface where the upper fixture and the lower fixture are connected to ensure that the two inclined surfaces of the upper fixture and the lower fixture are completely fitted; D. After completing the process of step C, fix the processed upper fixture and lower fixture to the prepared overall disc-shaped tooling, and then clamp the overall disc-shaped tooling. After clamping, use a deep lathe and a grinder to fine-process the outer circle and raceway groove of the fixture of the split gear transmission structure composed of the upper fixture and the lower fixture. After the fixture of the split gear transmission structure meets the use requirements, the size of the positioning pin hole of the fixture of the split gear transmission structure is processed to the size of the pin hole used for assembly, and the hole spacing tolerance is strictly controlled to ensure the accuracy requirements of the parts, and finally it is removed from the overall disc-shaped tooling.

6. The method for manufacturing a clamp with a split gear transmission structure according to claim 5, characterized in that: After the processing and forming in step A, a first heat treatment and aging treatment is required.

7. The method for manufacturing a clamp with a split gear transmission structure according to claim 5, characterized in that: The surface of the overall disc-shaped tooling in step D is provided with tooling pin holes processed according to the pin hole positions of each positioning pin of the fixture, and the hole spacing is precisely controlled. The upper fixture and the lower fixture are fixed to the overall disc-shaped tooling with screws based on the tooling pin holes.

8. The method for manufacturing a clamp with a split gear transmission structure according to claim 5, characterized in that: After the upper clamp and the lower clamp in step D are processed, they are combined with the processed split gear transmission structure, using the positioning pin as the positioning reference during the combination to form a complete combination, and finally assembled with the annular clamping mechanism to form a complete combined clamp body.

Images