A circuit breaker assembly machining fixture

Abstract

The application relates to the technical field of circuit breaker processing, in particular to a circuit breaker assembly processing clamp which comprises a moving base, a positioning assembly, a lower pressing plate, a supporting plate and an auxiliary unit. The application is characterized in that the lower pressing plate and the circumferential part are inclined and raised in the placing area, so that the contact seat can be quickly placed; in the rough positioning area, the guide section of the circumferential part is used for preliminarily positioning the contact seat, which lays a foundation for subsequent fine positioning; finally, in the fine positioning area, the lower pressing plate and the supporting plate are used for clamping and synchronous movement, so that the contact seat is accurately positioned on the moving base without manual repeated adjustment of the position of the contact seat; in addition, in the resetting and material taking process, the contact seat is automatically moved upward through the resetting of the supporting plate, so that the material can be conveniently taken; as a result, the complicated degree of manual operation steps is simplified, the operation difficulty is reduced, the workpiece placing efficiency of the contact seat is improved, and the overall work efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker processing technology, specifically to a circuit breaker assembly processing fixture. Background Technology

[0002] Circuit breakers are mainly composed of many core parts such as contact system, arc extinguishing system, slot assembly mechanism, trip unit, housing and accessories. Among them, the contact system is the conductive core of the entire equipment and is used to control the opening and closing of the circuit. In addition, the main components that realize the above functions are stationary contacts and moving contacts. The stationary contact assembly includes a contact seat, which is used to fix the vacuum interrupting chamber and connect to the external conductive circuit.

[0003] The contact seat consists of a lower base and an upper central cylindrical structure. The base has four matrix-arranged mounting holes for connection and installation. The upper inner side of the central hole on the cylindrical structure needs to be riveted to form a ring around the inner edge of the internal electrostatic conductor, stationary contact, and ceramic tube. However, due to the long investment return cycle and low economic benefits of automated production lines, this operation is currently usually carried out manually in conjunction with riveting equipment for small-batch production needs.

[0004] During processing, the contact seat is first placed on a specific fixture manually, and the position of the contact seat is adjusted manually to precisely define the contact in the set position. Then, the specific fixture moves the contact seat to the riveting equipment for riveting. The current operation process has the following problems: Because it is necessary to ensure the precise positioning of the contact, the gap between the contact and the specific fixture is small. During the picking and placing process, the friction between the two will affect the picking and placing steps. Therefore, the position of the contact seat needs to be precisely adjusted manually during the picking and placing process, which ultimately consumes more operation time. At the same time, it is difficult to ensure the accuracy of the contact seat placement through manual adjustment, which ultimately affects the tooling quality and tooling efficiency of the overall processing process. Summary of the Invention

[0005] Therefore, it is necessary to provide a circuit breaker assembly machining fixture to solve the problems of the prior art.

[0006] This application provides a circuit breaker assembly processing fixture, including: a worktable, on which two left-right symmetrical guide rails are fixedly arranged, and a movable seat is slidably arranged between the two guide rails. The area between the two guide rails is divided into a placement area, a coarse positioning area and a fine positioning area from front to back, wherein the fine positioning area also serves as the processing area for the contact seat.

[0007] The movable base is provided with a positioning component, which includes a central component and four circumferential components. The central component corresponds to the central hole on the contact base, and the circumferential components correspond to the mounting holes on the contact base. The positioning of the contact base is completed by the cooperation between the central component and the circumferential components and the central hole and the mounting holes, respectively.

[0008] An auxiliary mechanism is provided between the two guide rails and the movable seat. The auxiliary mechanism includes two pressure plates and a support plate on both sides of the movable seat, as well as an auxiliary unit. In the placement area, the support plate lifts the contact seat. When the movable seat moves in the coarse positioning area, the pressure plates press down on the contact seat, thus coarsely positioning the contact seat. In the fine positioning area, the pressure plates lock and move down, thus finely positioning the contact seat.

[0009] In the placement area, the contact seat is supported by a support plate for picking and placing operations. In the coarse positioning area, the lower pressure plate and the support plate are used in conjunction with the positioning components for preliminary positioning. In the fine positioning area, the lower pressure plate and the support plate are used in conjunction with the positioning components for fine positioning.

[0010] According to an advantageous embodiment, both the central component and the circumferential component are cylindrical, and both the central component and the circumferential component are fixedly mounted on the movable seat by a support ring. The diameter of the central component is the same as the diameter of the central hole, and the diameter of the circumferential component is the same as the diameter of the mounting hole.

[0011] The circumferential component is higher than the central component. The circumferential component consists of semicircular segments on the front and rear sides and a guide segment in the middle. The guide segment is an isosceles trapezoidal segment with a larger upper section and a rectangular segment with a smaller lower section, from top to bottom. The diameter of the cylinder formed by the two semicircular segments and the rectangular segment in the guide segment is the same as the diameter of the mounting hole.

[0012] According to an advantageous embodiment, the rectangular segment of the guide section has the same height as the semicircular segment, and the upper edge of the semicircular segment, the upper edge of the guide section, and the upper edge of the center piece are all chamfered.

[0013] According to an advantageous embodiment, the movable base is provided with two left-right symmetrical and up-down sliding mounting rods, a support plate is fixedly disposed on the upper end of the mounting rods, and a spring is provided between the support plate and the movable base.

[0014] The movable base is equipped with two symmetrical U-shaped frames that slide up and down via connecting rods. The openings of the U-shaped frames face upwards, and a connecting column is rotatably installed within the U-shaped area of ​​the U-shaped frame. The lower pressure plate is fixedly sleeved on the connecting column.

[0015] According to an advantageous embodiment, the lower pressure plate and the support plate on the same side are hinged together by a connecting strip.

[0016] According to an advantageous embodiment, the auxiliary unit includes a fixing plate, which is fixedly disposed on the upper end face of the guide rail, and the fixing plate has two vertically distributed mating grooves on the end face of the fixing plate facing the movable seat.

[0017] The mating groove consists of a high straight section, an inclined section that slopes downwards from front to back, and a low straight section. The high straight section covers the entire placement area and the coarse positioning area, while the inclined section and the low straight section cover the entire fine positioning area.

[0018] According to an advantageous embodiment, the left and right widths of the mating groove first increase from the middle section of the high straight section to the low straight section and then remain constant.

[0019] A mounting bracket is fixedly installed on the side of the U-shaped frame away from the contact seat. The mounting bracket is at the same height as the horizontal pressure plate. A movable rod slides through the mounting bracket from left to right. A fixed rod is fixedly installed on the horizontal section of the U-shaped frame. Guide posts are rotatably installed at the tail ends of both the movable rod and the fixed rod. The guide posts are located in the corresponding mating grooves.

[0020] The lower pressure plate has a locking groove at the end away from the contact seat. A spring two is fixedly installed on the moving rod and the mounting bracket. The free end of the moving rod and the opening of the locking groove are both chamfered.

[0021] According to an advantageous embodiment, in the placement area, the support plate is higher than the semicircular section of the circumferential member, the lower pressure plate is tilted upward on the side near the contact seat, and in the coarse positioning area, the lower pressure plate is horizontal and the distance between the lower pressure plate and the support plate is the same as the thickness of the bottom of the contact seat.

[0022] In summary, the present invention has the following beneficial effects: In the placement area, the inclined, raised lower pressure plate and circumferential components facilitate the rapid placement of the contact seat. In the coarse positioning area, the guide section of the circumferential components provides initial positioning of the contact seat, laying the groundwork for subsequent fine positioning. Finally, in the fine positioning area, the clamping and synchronous movement of the lower pressure plate and the support plate ensures precise positioning of the contact seat on the moving seat, eliminating the need for repeated manual adjustments. Furthermore, during the resetting and material handling process, the resetting of the support plate causes the contact seat to automatically move upwards, facilitating material handling. In conclusion, while simplifying the cumbersome manual operation steps and reducing operational difficulty, the invention improves the tooling placement efficiency of the contact seat, ultimately enhancing overall operational efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 A three-dimensional structural schematic diagram of a circuit breaker assembly processing fixture provided according to an embodiment of the present invention is shown;

[0025] Figure 2 A partial structural schematic diagram of a circuit breaker assembly machining fixture provided according to an embodiment of the present invention is shown;

[0026] Figure 3A partial cross-sectional top view of the fixing plate, the mating groove, and the supporting plate provided according to an embodiment of the present invention is shown;

[0027] Figure 4 A partial cross-sectional perspective view of the three-dimensional structure between the movable seat, the supporting ring, and the supporting plate provided according to an embodiment of the present invention is shown.

[0028] Figure 5 A partial sectional front view of the movable seat, support ring, and support plate provided according to an embodiment of the present invention is shown;

[0029] Figure 6 A partial cross-sectional view of the structure between the pressure plate, the locking groove, and the moving rod provided according to an embodiment of the present invention is shown.

[0030] Figure 7 A schematic diagram showing the movable seat provided according to an embodiment of the present invention is located in the placement area;

[0031] Figure 8 A schematic diagram showing the movable seat provided according to an embodiment of the present invention within a coarse positioning area is shown;

[0032] Figure 9 A schematic diagram showing the movable seat provided according to an embodiment of the present invention is located within the precision positioning area.

[0033] The above-mentioned attached drawings include the following reference numerals: 1. Workbench; 2. Guide rail; 3. Movable seat; 40. Placement area; 41. Coarse positioning area; 42. Fine positioning area; 5. Positioning component; 50. Center component; 51. Circumferential component; 510. Semicircular segment; 511. Guide segment; 52. Support ring; 6. Lower pressure plate; 7. Support plate; 70. Spring one; 71. U-shaped frame; 73. Connecting strip; 8. Auxiliary unit; 80. Fixing plate; 81. Mating groove; 82. Mounting bracket; 83. Moving rod; 84. Fixing rod; 85. Guide column; 86. Locking groove; 87. Spring two; 9. Lowering device. Detailed Implementation

[0034] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] like Figure 1As shown, a circuit breaker assembly processing fixture includes: a workbench 1, on which two symmetrical guide rails 2 are fixedly mounted, and a movable seat 3 is slidably disposed between the two guide rails 2. The movable seat 3 is used to place the contact seat and drive the contact seat to move back and forth. (See reference...) Figure 3 , Figure 7 , Figure 8 and Figure 9 The area between the two guide rails 2 is divided into a placement area 40, a coarse positioning area 41 and a fine positioning area 42 from front to back. The fine positioning area 42 also serves as the processing area for the contact seat. A pressing device 9 for riveting the upper end of the contact seat is provided above the fine positioning area 42.

[0036] like Figure 1 , Figure 2 and Figure 4 As shown, the movable seat 3 is provided with a positioning component 5, which includes a central component 50 and four circumferential components 51. The central component 50 corresponds to the central hole on the contact seat, and the circumferential components 51 correspond to the mounting holes on the contact seat. The positioning of the contact seat is completed by the cooperation between the central component 50 and the circumferential components 51 and the central hole and the mounting holes, respectively.

[0037] like Figure 1 , Figure 2 and Figure 4 As shown, an auxiliary mechanism is provided between the two guide rails 2 and the movable seat 3. The auxiliary mechanism includes two pressure plates 6 and a support plate 7 on both sides of the movable seat 3, as well as an auxiliary unit 8. When the support plate 7 lifts the contact seat in the placement area 40 and the movable seat 3 moves in the coarse positioning area 41, the pressure plate 6 presses down on the contact seat, thus coarsely positioning the contact seat. When the movable seat 3 is in the fine positioning area 42, the pressure plate 6 locks and moves down, thus finely positioning the contact seat.

[0038] First, it should be noted that during the operation, the movable seat 3 is driven by an electric push rod to move back and forth. That is, the movable seat 3 places the contact seat in the placement area 40 and moves the contact seat backward through the coarse positioning area 41 to the fine positioning area 42 for riveting. Finally, it is reset and moved back to the placement area 40. In addition, the pressing device 9 is an external existing riveting device. The components or processes described above are all external existing technology, and will not be elaborated further.

[0039] During operation, the movable seat 3 is located within the placement area 40. The operator places the contact seat to be processed onto the movable seat 3, aligning the mounting holes of the contact seat with the corresponding circumferential component 51 vertically. This placement completes the contact seat placement step. During placement, the operator presses down on the contact seat to ensure the mounting holes are aligned with the circumferential component 51. Furthermore, the weight of the contact seat itself and the pressing action (primarily the weight of the contact seat after the pressing action is released) exert a downward force on the support plate 7, causing the lower pressure plate 6 to initially adhere to the upper end of the contact seat base. This completes the rough positioning process. Subsequent steps are performed as the movable seat... The moving seat 3 continues to move backward, locking the lower pressure plate 6 and the support plate 7 through the auxiliary unit 8. While the lower pressure plate 6 and the support plate 7 clamp the contact seat, they drive the contact seat to move downward synchronously. Through the cooperation between the contact seat and the center part 50 and the circumferential part 51, the precise positioning of the contact seat is completed. Subsequently, the lower pressing device 9 moves down to perform riveting operations. After the riveting step is completed, the moving seat 3 moves forward to reset. During the reset process, the auxiliary unit 8 unlocks the lower pressure plate 6 and causes the lower pressure plate 6 to gradually tilt up and reset. When the moving seat 3 resets and moves to the placement area 40, the support plate 7 pushes the contact seat up to the placement height, which facilitates the placement of the contact seat to be processed and the removal of the finished contact seat.

[0040] The following points need to be added regarding the overall process of the technical solution: By using the steps of coarse positioning followed by fine positioning, the tediousness and difficulty of manually placing the contact seat are simplified, and the accuracy of the contact seat position is ultimately ensured, thus ensuring the final processing accuracy. In addition, the difficulty of removing the finished contact seat is also reduced, thereby meeting the operational needs in the case of manual placement of the contact seat and small-batch production.

[0041] like Figure 4 and Figure 5 As shown, both the central component 50 and the circumferential component 51 are cylindrical. Both the central component 50 and the circumferential component 51 are fixedly mounted on the movable seat 3 by the support ring 52. The diameter of the central component 50 is the same as the diameter of the central hole, and the diameter of the circumferential component 51 is the same as the diameter of the mounting hole.

[0042] The circumferential member 51 is higher than the central member 50. The circumferential member 51 is composed of semicircular segments 510 on the front and rear sides and a guide segment 511 in the middle. The guide segment 511 is an isosceles trapezoidal segment with a larger upper section and a rectangular segment with a smaller lower section, from top to bottom. The diameter of the cylinder formed by the two semicircular segments 510 and the rectangular segment in the guide segment 511 is the same as the diameter of the mounting hole.

[0043] There are three states in which the contact seat is placed on the movable seat 3. State 1: Because the diameter of the circumferential part 51 is the same as the diameter of the mounting hole, the contact seat is difficult to fall smoothly and completely due to the friction between the circumferential part 51 and the inner wall of the mounting hole during the placement process. Moreover, if it is manually pressed down, it is easy to generate greater frictional resistance. Therefore, the guide section 511 of the circumferential part 51 passes through the mounting hole, that is, the contact seat is initially placed on the four circumferential parts 51. The lower end face of the contact seat does not continue to move down and contact the support ring 52. However, the lower pressure plate 6 is attached to the upper end of the contact seat base by the weight of the contact seat itself. In summary, the guide section 511 of the four circumferential parts 51 in the above states initially limits the position of the contact seat, simplifying the operation steps of manually placing the contact seat.

[0044] State 2: The contact seat is pressed slightly manually so that the guide section 511 of the circumferential component 51 completely penetrates the mounting hole and part of the semicircular section 510 enters the mounting hole. The lower pressure plate 6 and the support plate 7 are still in contact with the contact seat. Compared with State 1, the position of the contact seat has been roughly adjusted to provide a preliminary guide for the subsequent penetration of the center component 50 through the center hole, so as to avoid the mounting hole and the semicircular section 510 being too far apart and affecting the subsequent accurate positioning operation.

[0045] State 3: When the movable seat 3 moves into the precision positioning area 42, the lower pressure plate 6 and the support plate 7 drive the contact seat to move down synchronously. Finally, the upper semicircular section 510 of the circumferential part 51 passes through the mounting hole, and the central part 50 passes through the central hole. Finally, the lower end of the contact seat contacts the upper end of the support ring 52. Thus, the placement benchmark of the contact seat is determined by the precise positioning of the circumferential part 51 and the central part 50, and the precision positioning is completed.

[0046] It should be noted that, see reference Figure 7 , Figure 8 and Figure 9 The three placement states are connected and switched according to the moving position of the movable seat 3. For example, after completing state three, the movable seat 3 moves forward and resets, while the position of the contact seat gradually changes from state three to state one, so as to facilitate the quick removal of the riveted contact seat by hand.

[0047] like Figure 4 and Figure 5 As shown, the rectangular section of the guide section 511 has the same height as the semicircular section 510. The upper edge of the semicircular section 510, the upper edge of the guide section 511, and the upper edge of the center member 50 are all chamfered.

[0048] During the placement of the contact seat on the movable seat 3, the above-mentioned chamfering treatment facilitates the guide section 511, the semi-circular section 510 and the center member 50 to pass through the corresponding mounting holes and center holes, avoiding the problem of difficulty in clamping and holding, and reducing the situation of damage to the surface of the contact seat due to tooling process.

[0049] like Figure 3 , Figure 4 and Figure 5 As shown, the movable seat 3 is provided with two symmetrical mounting rods that slide up and down. The support plate 7 is fixedly installed on the upper end of the mounting rods, and a spring 70 is provided between the support plate 7 and the movable seat 3.

[0050] The movable seat 3 is provided with two symmetrical U-shaped frames 71 that slide up and down via a connecting rod. The opening of the U-shaped frame 71 faces upward. A connecting column is rotatably provided in the U-shaped area of ​​the U-shaped frame 71. The lower pressure plate 6 is fixedly sleeved on the connecting column. The lower side of the lower pressure plate 6 near the contact seat is chamfered.

[0051] like Figure 3 and Figure 4 As shown, the lower pressure plate 6 and the support plate 7 on the same side are hinged together by a connecting strip 73.

[0052] like Figure 1 , Figure 2 and Figure 3 As shown, the auxiliary unit 8 includes a fixing plate 80. The fixing plate 80 is fixedly installed on the upper end face of the guide rail 2. The fixing plate 80 has two mating grooves 81 distributed vertically on the end face of the moving seat 3.

[0053] The mating groove 81 consists of a high straight section, an inclined section sloping downwards from front to back, and a low straight section. The high straight section covers the entire placement area 40 and the coarse positioning area 41, while the inclined section and the low straight section cover the entire fine positioning area 42. The height difference between the high straight section and the corresponding low straight section is the same as the height difference of the contact seat in both coarse positioning (when the lower pressure plate 6 is in a horizontal state) and fine positioning scenarios.

[0054] First, after the manual placement of the contact seat to be processed is completed, the support plate 7 moves downward due to the weight of the contact seat itself, causing the spring 70 to compress and deform. The downward movement of the support plate 7 causes the corresponding lower pressure plate 6 to rotate through the connecting strip 73. After the contact seat is placed and the initial position of the contact seat is adjusted, both the lower pressure plate 6 and the support plate 7 are in contact seat base and the lower pressure plate 6 is in a horizontal state. Regarding the state of the lower pressure plate 6, it should be noted that the weight of the processed contact seat, the elastic coefficient of the spring 70, and the connection position between the support plate 7 and the lower pressure plate 6 are all accurate data obtained by those skilled in the art through multiple simulation tests. That is, after the corresponding contact seat is placed on the support plate 7, the lower pressure plate 6 rotates from a tilted state to a horizontal state. This is an existing known technology and will not be discussed further. In the second state, the manual pressing step ensures that the contact seat can rely on its own weight to keep the lower pressure plate 6 in a horizontal state while initially adjusting the position of the contact seat.

[0055] See Figure 3 The width of the mating groove 81 increases from the middle of the high straight section to the low straight section and then remains constant.

[0056] like Figure 3 , Figure 4 and Figure 6 As shown, a mounting bracket 82 is fixedly installed on the side of the U-shaped frame 71 away from the contact seat. The mounting bracket 82 is at the same height as the horizontal lower pressure plate 6. A movable rod 83 slides through the mounting bracket 82 from left to right. A fixed rod 84 is fixedly installed on the horizontal section of the U-shaped frame 71. Guide posts 85 are rotatably installed at the tail ends of both the movable rod 83 and the fixed rod 84. The guide posts 85 are located in the corresponding mating grooves 81.

[0057] The lower pressure plate 6 has a locking groove 86 at the end away from the contact seat. A spring 87 is fixedly installed on the moving rod 83 and the mounting bracket 82. In order to ensure that the moving rod 83 can enter the locking groove 86 when the lower pressure plate 6 is not completely horizontal or nearly horizontal, the free end of the moving rod 83 and the opening of the locking groove 86 are both chamfered, which improves the fault tolerance when the moving rod 83 locks with the horizontal rod.

[0058] After the contact seat placement and coarse positioning steps are completed, the movable seat 3 drives the contact seat to move backward continuously. The upper guide post 85 enters the inclined surface with varying width within the mating groove 81, causing the upper guide post 85 to move closer to the contact seat. The guide post 85 drives the corresponding movable rod 83 to move synchronously, and the spring 87 is compressed and deformed, ultimately causing the free section of the movable rod 83 to engage with the corresponding mating groove 81, thus completely locking the horizontal state of the corresponding lower pressure plate 6, and also locking the clamping state of the contact seat base between the support plate 7 and the lower pressure plate 6. As the movable seat 3 gradually passes through the inclined section of the mating groove 81 and enters the low straight section, the contact seat is gradually moved downward through the cooperation between the support plate 7 and the lower pressure plate 6, so that the circumferential part 51 completely penetrates the mounting hole and the central part 50 enters the central hole. Finally, the base of the contact seat is in close contact with the upper end of the support ring 52, thus completing the fine positioning process of the contact seat. Finally, the riveting operation is performed, during which the spring 70 continuously deforms and compresses.

[0059] After the riveting operation is completed, the moving seat 3 moves forward and resets. As the moving seat 3 drives the guide post 85 from the low straight section and the inclined section of the mating groove 81 into the high straight section, the support plate 7 and the lower pressure plate 6 move the contact seat upward. When the upper guide post 85 moves out of the inclined surface with varying width, the deformation of the second spring 87 generates elastic force to reset the upper guide post 85. This causes the free end of the moving rod 83 to exit the locking groove 86, completing the unlocking of the lower pressure plate 6. Finally, the moving seat 3 moves into the placement area 40, that is, the contact seat returns to state one or state two, and the operator can easily take out the processed contact seat.

[0060] like Figure 3 and Figure 7 As shown, within the placement area 40, to facilitate manual placement of the contact seat onto the movable seat 3, in the initial state, the support plate 7 is higher than the semicircular segment 510 of the circumferential member 51, and the side of the lower pressure plate 6 closest to the contact seat is tilted upwards. Within the coarse positioning area 41, the lower pressure plate 6 is horizontal, and the distance between the lower pressure plate 6 and the support plate 7 is the same as the thickness of the bottom of the contact seat. When the lower pressure plate 6 is horizontal, the distance between the lower pressure plate 6 and the corresponding support plate 7 is the same as the contact seat base, thereby ensuring the limiting and clamping effect of the lower pressure plate 6 and the support plate 7 on the contact seat base when horizontal.

[0061] It should be further explained that the existing technology uses a method of manually placing and pressing to adjust the position of the contact seat. While precise positioning and clamping of the contact seat is achieved within the placement area 40, friction between the inner walls of the contact seat mounting holes and the center hole and the positioning and clamping components during placement affects the ease and speed of manual placement. Ultimately, more time is required to manually adjust the contact seat position for tooling. Similarly, the unloading process after processing also requires more time to manually adjust the contact seat position before removal. This technical solution adds a coarse positioning area 41, a fine positioning area 42, a positioning component 5, and an auxiliary mechanism. The contact seat is initially positioned within the coarse positioning area 41 by the guide section 511 of the circumferential component 51, and the lower pressure plate 6 and the support plate 7 are initially horizontally aligned. The contact seat base, upon entering the precision positioning area 42, utilizes the cooperation of the lower pressure plate 6 and the support plate 7 to not only lock and clamp the contact seat base, but also ensures that the semicircular segment 510 of the circumferential member 51 and the central member 50 fully enter the corresponding mounting holes and central holes, thus completing the precision positioning of the contact seat. Furthermore, the loading process only requires simple manual placement, and during the removal process, the support plate 7 drives the contact seat to automatically reset to the placement state within the placement area 40, facilitating manual handling of the contact seat and ensuring the placement accuracy of the contact seat. This also simplifies manual operation steps and reduces operational difficulty, ultimately improving the overall tooling efficiency. In addition, all added components are external components, which can be used for a long time after a single installation. In summary, this technical solution is a specific improvement based entirely on and to address the deficiencies of existing technologies.

[0062] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0063] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A circuit breaker assembly machining fixture, characterized in that, include: The workbench is equipped with two symmetrical guide rails. A movable seat is slidably arranged between the two guide rails. The area between the two guide rails is divided into a placement area, a coarse positioning area, and a fine positioning area from front to back. The fine positioning area also serves as the processing area for the contact seat. The movable base is provided with a positioning component, which includes a central component and four circumferential components. The central component corresponds to the central hole on the contact base, and the circumferential components correspond to the mounting holes on the contact base. The positioning of the contact base is completed by the cooperation between the central component and the circumferential components and the central hole and the mounting holes, respectively. An auxiliary mechanism is provided between the two guide rails and the movable seat. The auxiliary mechanism includes two pressure plates and a support plate on both sides of the movable seat, as well as an auxiliary unit. In the placement area, the support plate lifts the contact seat. When the movable seat moves in the coarse positioning area, the pressure plates press down on the contact seat, thus coarse positioning the contact seat. In the fine positioning area, the pressure plates lock and move down, thus fine positioning the contact seat. The movable base is provided with two symmetrical mounting rods that slide up and down. The support plate is fixedly installed on the upper end of the mounting rods, and a spring is provided between the support plate and the movable base. The movable seat is provided with two symmetrical U-shaped frames that slide up and down via a connecting rod. The openings of the U-shaped frames face upwards, and a connecting column is rotatably provided within the U-shaped area of ​​the U-shaped frame. The lower pressure plate is fixedly sleeved on the connecting column. The auxiliary unit includes a fixing plate, and the fixing plate is fixedly installed on the upper end face of the guide rail. The fixing plate has two mating grooves distributed vertically on the end face facing the movable seat. The mating groove consists of a high straight section, an inclined section that slopes downwards from front to back, and a low straight section from front to back. The high straight section covers the entire placement area and the coarse positioning area, while the inclined section and the low straight section cover the entire fine positioning area. The width of the mating groove increases from the middle of the high straight section to the low straight section and then remains constant. A mounting bracket is fixedly installed on the side of the U-shaped frame away from the contact seat. The mounting bracket is at the same height as the horizontal pressure plate. A movable rod slides through the mounting bracket from left to right. A fixed rod is fixedly installed on the horizontal section of the U-shaped frame. Guide posts are rotatably installed at the tail ends of both the movable rod and the fixed rod. The guide posts are located in the corresponding mating grooves. The lower pressure plate has a locking groove at the end away from the contact seat. A spring two sleeved on the moving rod is fixedly installed between the moving rod and the mounting bracket. The free end of the moving rod and the opening of the locking groove are both chamfered. In the placement area, the contact seat is supported by a support plate for picking and placing operations. In the coarse positioning area, the lower pressure plate and the support plate are used in conjunction with the positioning components for preliminary positioning. In the fine positioning area, the lower pressure plate and the support plate are used in conjunction with the positioning components for fine positioning.

2. The circuit breaker assembly processing fixture according to claim 1, characterized in that: Both the central component and the circumferential component are cylindrical. Both the central component and the circumferential component are fixedly mounted on the movable seat by a support ring. The diameter of the central component is the same as the diameter of the central hole, and the diameter of the circumferential component is the same as the diameter of the mounting hole. The circumferential component is higher than the central component. The circumferential component consists of semicircular segments on the front and rear sides and a guide segment in the middle. The guide segment is an isosceles trapezoidal segment with a larger upper section and a rectangular segment with a smaller lower section, from top to bottom. The diameter of the cylinder formed by the two semicircular segments and the rectangular segment in the guide segment is the same as the diameter of the mounting hole.

3. A circuit breaker assembly machining fixture according to claim 2, characterized in that: The rectangular section of the guide segment has the same height as the semicircular section, and the upper edge of the semicircular section, the upper edge of the guide segment, and the upper edge of the center piece are all chamfered.

4. A circuit breaker assembly machining fixture according to claim 1, characterized in that: The lower pressure plate and the support plate on the same side are hinged together by a connecting strip.

5. A circuit breaker assembly machining fixture according to claim 1, characterized in that: Within the placement area, the support plate is higher than the semicircular section of the circumferential component, and the side of the lower pressure plate near the contact seat is tilted upwards. Within the coarse positioning area, the lower pressure plate is horizontal, and the distance between the lower pressure plate and the support plate is the same as the thickness of the bottom of the contact seat.

Images