Machining clamp

Abstract

The utility model provides a machining clamp, which is used for clamping and fixing a split body of a split main heater in the machining process of the split main heater, and comprises a base in a disc shape and used for being arranged on a machining platform; the multiple supporting assemblies are arranged on the upper surface of the base and evenly distributed in the circumferential direction of the base, and each supporting assembly is used for supporting one split body of the split main heater; the driving devices are arranged on the base, and the driving devices are connected with the supporting assemblies in a one-to-one correspondence mode and used for driving the corresponding supporting assemblies to move in the radial direction of the base so that all the split bodies of the split main heater can be in butt joint; at least one pressing mechanism is arranged on each supporting assembly, and each pressing mechanism is used for pressing the split body of the split main heater on the supporting assembly corresponding to the pressing mechanism. According to the utility model, the size precision of a single split body in the processing process of the split main heater can be effectively guaranteed, so that the quality and the performance of a finished product are guaranteed, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical fixtures, in particular to a processing fixture. Background Art

[0002] The main heater of the single crystal furnace is located outside the quartz crucible and is designed in a ring shape. In order to reduce costs, the existing main heaters all adopt a split structure for easy manufacturing, transportation and installation.

[0003] At present, the processing of the split main heater generally involves first clamping and fixing the various parts of the split main heater on the equipment platform, and then assembling the various parts of the split main heater together through clamps and bolts to form a whole circle to make a finished product.

[0004] However, during the assembly process of the split main heater's various components into a complete circle, the operator needs to adjust the position of the clamp multiple times. Each adjustment causes the corresponding component of the split main heater to deform, and the direction and amount of deformation cannot be controlled, making it impossible to guarantee the accuracy of the single-petal dimensions. Ultimately, the shape of the assembled split main heater deviates significantly from the required full circle, resulting in low dimensional accuracy, which affects the quality and performance of the split main heater. Furthermore, during the processing of each component of the split main heater, the operator needs to adjust the position of the clamp multiple times, which reduces work efficiency. Utility Model Content

[0005] In view of this, the utility model provides a processing fixture, which can effectively ensure the dimensional accuracy of a single split during the processing of the split main heater, thereby effectively ensuring the quality and performance of the finished product and improving work efficiency.

[0006] In order to solve at least one of the above technical problems, the present invention adopts the following technical solutions:

[0007] The processing fixture according to the embodiment of the present invention is used to clamp and fix the split body of the split main heater during the processing of the split main heater, and includes:

[0008] A base, which is disc-shaped and is used to be placed on the processing platform;

[0009] A plurality of support assemblies, the plurality of support assemblies being arranged on the upper surface of the base and uniformly distributed along the circumference of the base, each support assembly being used to support one split of the split main heater;

[0010] Multiple driving devices are provided on the base, and the driving devices are connected to the support assemblies in a one-to-one correspondence. Each driving device is used to drive its corresponding support assembly to move radially along the base to dock the separate parts of the split main heater;

[0011] There are multiple pressing mechanisms, and each supporting assembly is provided with at least one pressing mechanism, and each pressing mechanism is used to press the split of the split main heater on the supporting assembly corresponding thereto.

[0012] Furthermore, each support assembly includes:

[0013] The support body has an outer side surface that is an arc surface and is coaxial with the base. The outer side surface of the support body is used to match the inner side surface of the split main heater.

[0014] Furthermore, each driving device is a screw transmission device, each screw transmission device is arranged along the radial direction of the base, the bottom of each support body is provided with a protrusion for connecting with the screw transmission device, and the base is provided with a guide groove for sliding connection with each protrusion, each screw transmission device is located below its corresponding support body, and each guide groove extends along the radial direction of the base.

[0015] Furthermore, a bottom plate is provided at the bottom of each support body, a protrusion is provided on the lower surface of the bottom plate, the bottom plate is parallel to the base, and the bottom plate is used to support the split bottom of the split main heater on the support assembly.

[0016] Furthermore, a first positioning hole is formed on the bottom plate, and a row of second positioning holes corresponding to each first positioning hole is formed on the base, and the arrangement direction of each row of second positioning holes is parallel to the length direction of the guide groove;

[0017] Each support assembly further includes a positioning pin, which is used to sequentially pass through the first positioning hole and a second positioning hole corresponding to the first positioning hole to position the support body on the base.

[0018] Furthermore, a connecting hole is provided on the end of the base plate close to the axis of the base, and a first long hole corresponding to each connecting hole is provided on the base, and the length direction of each first long hole is parallel to the length direction of the guide groove. A fastener is also provided on the base, and the fastener passes through the connecting hole and the first long hole corresponding to the connecting hole in sequence to lock the support body on the base.

[0019] Furthermore, the processing fixture of the present invention further includes a plurality of guide mechanisms, each supporting assembly corresponds to at least one guide mechanism, each guide mechanism is provided on the base and its length direction is parallel to the length direction of the guide slot, and each guide mechanism is used to guide the movement of the supporting assembly corresponding thereto;

[0020] Each guide mechanism includes:

[0021] A linear guide rail is provided on the base, and the length direction of the linear guide rail is parallel to the length direction of the guide groove;

[0022] The slider is fixedly connected to the lower surface of the base plate and is slidably connected to the linear guide rail.

[0023] Furthermore, the outer arc surface of the support body is provided with at least one strip groove, each strip groove extends axially along the outer arc surface of the support body, a support bar is provided in each strip groove, the length direction of the strip groove is consistent with the length direction of the support bar, each support bar is connected to its corresponding support body through an adjustment assembly, each adjustment assembly is used to drive its corresponding support bar to extend out of the strip groove or retract into the strip groove along the radial direction of the outer arc surface of the support body, and the outer side surface of each support bar is used to support the inner side surface of the split main heater on the support assembly;

[0024] The outer side surface of the support bar is an arc surface.

[0025] Furthermore, each support bar is connected to the support body via two adjustment components, and the two adjustment components are spaced apart along the length direction of the support bar;

[0026] Each adjustment assembly includes:

[0027] A ball cap, which is arranged on the support bar;

[0028] Ball head, the ball head is hinged in the ball head cap;

[0029] The ball screw is arranged radially along the outer arc surface of the support body. A threaded through hole for threaded connection with the ball screw is provided in the strip groove. One end of the ball screw passes through the threaded through hole and is connected to the ball head.

[0030] Furthermore, each pressing mechanism is provided on top of its corresponding supporting assembly, and each pressing mechanism includes:

[0031] A pressing plate is used to press the split top of the split main heater on the corresponding support assembly, and the pressing plate is provided with an adjustment long hole along its length;

[0032] The screw is arranged along the axial direction of the base, and a locking nut is provided on the screw. The screw is connected to the support assembly. A locking hole for threaded connection with the screw is provided on the top of the support assembly. The screw passes through the adjusting long hole and the locking hole in turn, and the pressure plate and the support assembly are locked by the locking nut.

[0033] The above technical solution of the utility model has at least one of the following beneficial effects:

[0034] According to the processing fixture of the embodiment of the present invention, a disc-shaped base is provided on the processing platform to provide a stable support surface. A plurality of support assemblies are evenly arranged along the circumference of the base. Each support assembly is used to support a split of the split main heater. The corresponding support assembly is driven by a drive device to move radially along the base to achieve docking of the splits. The clamping mechanism is used to clamp the splits on the support assembly to prevent deviation during the docking process. Therefore, through the coordinated action of the base, support assembly, drive device, and clamping mechanism, there is no need to adjust the clamp position multiple times during the processing of the split main heater. The dimensional accuracy of each split during the processing of the split main heater can be effectively guaranteed, thereby effectively ensuring the quality and performance of the finished product and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of a processing fixture according to an embodiment of the present utility model;

[0036] Figure 2 This is a front view of the base of the processing fixture in the embodiment of the utility model;

[0037] Figure 3 A top view of the base of the processing fixture according to an embodiment of the present utility model;

[0038] Figure 4 A schematic diagram of a driving device in a processing fixture according to an embodiment of the present utility model;

[0039] Figure 5 Schematic diagram of the guide mechanism in the processing fixture according to an embodiment of the present utility model;

[0040] Figure 6 This is a schematic diagram of a support assembly in a processing fixture according to an embodiment of the present utility model;

[0041] Figure 7 A schematic diagram of a support assembly in a processing fixture according to an embodiment of the present invention;

[0042] Figure 8 This is a schematic diagram of a support assembly in a processing fixture according to an embodiment of the present utility model;

[0043] Figure 9 This is a cross-sectional view of a support assembly in a processing fixture according to an embodiment of the present utility model;

[0044] Figure 10 This is a schematic diagram of an adjustment component in a processing fixture according to an embodiment of the present utility model.

[0045] Reference numerals: 100, base; 110, guide groove; 120, second positioning hole; 130, first long hole; 200, support assembly; 210, support body; 211, bottom plate; 212, protrusion; 213, first positioning hole; 214, connecting hole; 215, strip groove; 216, threaded through hole; 217, locking hole; 220, positioning pin; 230, support bar;

[0046] 300, driving device; 310, screw rod; 320, screw rod slider;

[0047] 400, clamping mechanism; 410, pressing plate; 420, screw; 430, locking nut;

[0048] 500, split;

[0049] 600, guide mechanism; 610, linear guide rail; 620, slider;

[0050] 700, adjustment assembly; 710, ball cap; 720, ball head; 730, ball screw;

[0051] 800. Fixtures. DETAILED DESCRIPTION

[0052] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0053] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the usual meanings understood by persons of ordinary skill in the field to which this utility model belongs. The words "first", "second" and similar terms used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0054] The following first describes in detail the processing fixture according to the embodiment of the utility model with reference to the accompanying drawings.

[0055] Specifically, if Figures 1 to 10As shown, the processing fixture according to the embodiment of the present invention is used to clamp and fix the split 500 of the split main heater during the processing of the split main heater. The split main heater is formed as a cylinder that passes through from top to bottom. The processing fixture may include: a base 100, multiple support components 200, multiple driving devices 300 and multiple clamping mechanisms 400.

[0056] The base 100 is disc-shaped and is used to be set on a processing platform. A plurality of support assemblies 200 are arranged on the upper surface of the base 100 and are evenly distributed along the circumference of the base 100. Each support assembly 200 is used to support a split 500 of the split main heater. A plurality of driving devices 300 are arranged on the base 100. The driving devices 300 are connected to the support assemblies 200 in a one-to-one correspondence. Each driving device 300 is used to drive its corresponding support assembly 200 to move radially along the base 100 so that each split 500 of the split main heater can be docked. Each support assembly 200 is provided with at least one clamping mechanism 400. Each clamping mechanism 400 is used to clamp the split 500 of the split main heater on its corresponding support assembly 200.

[0057] The following combination Figure 1 Briefly describe the working process of the processing fixture of the embodiment of the utility model:

[0058] First, the operator places each split body 500 of the split main heater on the corresponding support assembly 200, and uses the clamping mechanism 400 to preliminarily clamp the split body 500 placed on each support assembly 200 to prevent the split body 500 from sliding or deflecting during the initial movement. Then, the driving device 300 is started to drive the corresponding support assembly 200 to move radially along the base 100, at which time the split bodies 500 gradually approach each other. When the split bodies 500 of the split main heater are about to close into a full circle, the operator can also turn off the driving device 300, then appropriately loosen the clamping mechanism 400 and fine-tune the corresponding split body 500 to ensure that each split body 500 can be accurately aligned. Finally, after fine-tuning, the clamping mechanism 400 is used again to press the corresponding split 500 onto the support assembly 200. Thereafter, the driving device 300 is started again. The driving device 300 drives the corresponding support assembly 200 to move the split 500 so that each split 500 is docked into a full circle. After docking, the driving device 300 is turned off, and the operator assembles the splits 500 of the split main heater.

[0059] The processing fixture of the embodiment of the present invention has a disc-shaped base 100 disposed on the processing platform to provide a stable support surface. A plurality of support assemblies 200 are evenly arranged along the circumference of the base 100. Each support assembly 200 is used to support a split 500 of the split main heater. The drive device 300 drives the corresponding support assembly 200 to move radially along the base 100 to achieve docking of the splits 500. The clamping mechanism 400 is used to clamp the splits 500 on the support assembly 200 to prevent displacement during the docking process. Therefore, through the coordinated action of the base 100, the support assembly 200, the drive device 300, and the clamping mechanism 400, there is no need to adjust the clamp position multiple times during the processing of the split main heater. The dimensional accuracy of each split 500 during the processing of the split main heater can be effectively guaranteed, thereby effectively ensuring the quality and performance of the finished product and improving work efficiency.

[0060] In some embodiments of the present invention, Figure 1 、 Figures 6 to 8 As shown, each support assembly 200 includes: a support body 210, the outer side surface of the support body 210 is a circular arc surface and is coaxial with the base 100, and the outer side surface of the support body 210 is used to cooperate with the inner side surface of the split body 500 of the split main heater. Therefore, the design of the circular arc surface allows the various split bodies 500 of the split main heater to be naturally aligned during the docking process. During the docking process, the inner side surface of the split body 500 always maintains contact with the circular arc surface of the support body 210, and can remain stable even during radial movement, which simplifies the docking process of the split bodies 500, reduces the time for adjustment and correction, and improves production efficiency. In addition, the design of the circular arc surface helps to adapt to split bodies 500 of different diameters, increasing the applicability of the device.

[0061] In some embodiments of the present invention, Figures 1 to 4 as well as Figure 6 As shown, each driving device 300 is a screw transmission device, each screw transmission device is arranged along the radial direction of the base 100, and a protrusion 212 for connecting to the screw transmission device is provided at the bottom of each support body 210. A guide groove 110 for sliding connection with each protrusion 212 is provided on the base 100. Each screw transmission device is located below its corresponding support body 210, and each guide groove 110 extends along the radial direction of the base 100.

[0062] For example, Figures 3 and 4As shown, the screw transmission device may include a screw 310, a screw slider 320 and a drive member (not shown). The screw transmission device may be mounted on the base 100 by a fixing device 800, and a bearing that matches the screw 310 is provided on the fixing device 800. The screw 310 is threadedly connected to the screw slider 320. When the screw 310 rotates, the screw slider 320 moves axially along the screw 310, that is, moves radially along the base 100. The projection 212 of the support assembly 200 is connected to the screw slider 320 of the screw transmission device, and the drive member may be a motor or a manual wheel. The drive member realizes the radial movement of the screw slider 320 along the base 100 by rotating the screw 310, thereby driving the projection 212 connected to the screw transmission device to move radially along the base 100. The base 100 is further provided with a guide groove 110 for slidingly connecting with a protrusion 212 at the bottom of the support body 210 to ensure that the support body 210 moves smoothly along the radial direction of the base 100 and prevent it from tilting or deflecting during movement.

[0063] Thus, the arrangement of the guide groove 110 and the screw drive mechanism provides high positioning accuracy and effectively ensures smooth movement of each support assembly 200 during docking of each split main heater 500. This results in a simple and compact structure, easy maintenance, and high reliability. Furthermore, the screw drive mechanism is highly reversible, allowing for the adjustment of the position of the support body 210 at any time as needed.

[0064] In some other embodiments, such as Figure 2 As shown, dovetail grooves can be used on both sides of the guide groove 110. This further improves the guiding accuracy and prevents the projection 212 from swinging or deflecting during movement.

[0065] In some embodiments of the present invention, Figures 6 and 7 As shown, a bottom plate 211 is provided at the bottom of each support body 210, and a protrusion 212 is provided on the lower surface of the bottom plate 211. The bottom plate 211 is parallel to the base 100 and is used to support the bottom of the split body 500 of the split main heater on the support assembly 200. Therefore, the design of the bottom plate 211 improves the stability and support effect of each split body 500 of the split main heater during placement and movement.

[0066] In some embodiments of the present invention, Figures 1 to 6As shown, the bottom plate 211 is provided with first positioning holes 213, and the base 100 is provided with a row of second positioning holes 120 corresponding to each first positioning hole 213. The arrangement direction of each row of second positioning holes 120 is parallel to the length direction of the guide slot 110. Each support assembly 200 may also include a positioning pin 220, which is used to sequentially pass through the first positioning hole 213 and the second positioning hole 120 corresponding to the first positioning hole 213 to position the support body 210 on the base 100.

[0067] Therefore, the design of the positioning hole and the positioning pin 220 ensures the accurate positioning of the support body 210 on the base 100, improves the accuracy of each split body 500 during the docking process, and after the positioning pin 220 is inserted into the positioning hole, the support body 210 is fixed on the base 100 to prevent it from being offset in subsequent operations (such as the assembly and connection of each split body 500), thereby improving the stability of the device, saving adjustment time during the processing process, and improving production efficiency.

[0068] In some embodiments of the present invention, Figures 1 to 6 As shown, a connecting hole 214 is provided on the end of the bottom plate 211 close to the axis of the base 100, and a first long hole 130 corresponding to each connecting hole 214 is provided on the base 100. The length direction of each first long hole 130 is parallel to the length direction of the guide groove 110. A fastener (not shown) is also provided on the base 100, which passes through the connecting hole 214 and the first long hole 130 corresponding to the connecting hole 214 in sequence to lock the support body 210 on the base 100.

[0069] In other words, the synergistic effect of the connecting hole 214, the first elongated hole 130, and the fastener further improves positioning accuracy, further ensuring a more stable fixation of the support body 210 to the base 100, preventing movement during subsequent operations and thus improving product quality. The design of the first elongated hole 130 allows the fastener to be adjusted within a certain range to accommodate positioning requirements at different locations, thereby increasing the flexibility and adaptability of the device.

[0070] In some embodiments of the present invention, Figures 1 to 5As shown, the processing fixture of the present invention also includes a plurality of guide mechanisms 600, and each support assembly 200 corresponds to at least one guide mechanism 600. Each guide mechanism 600 is arranged on the base 100 and its length direction is parallel to the length direction of the guide groove 110. Each guide mechanism 600 is used to guide the movement of the support assembly 200 corresponding thereto. Each guide mechanism 600 may include: a linear guide rail 610 and a slider 620. Among them, the linear guide rail 610 is arranged on the base 100, and its length direction is parallel to the length direction of the guide groove 110. The slider 620 is fixedly connected to the lower surface of the base plate 211, and the slider 620 is slidably connected to the linear guide rail 610. In this way, the stability of the support body 210 in the process of driving the corresponding split body 500 to dock is further guaranteed, the movement accuracy of the docking process is improved, and it is prevented from tilting and offsetting during the movement, thereby improving the processing accuracy and product quality.

[0071] In some embodiments of the present invention, Figures 6 to 10 As shown, the outer arc surface of the support body 210 is provided with at least one strip-shaped groove 215. Each strip-shaped groove 215 extends axially along the outer arc surface of the support body 210. A support bar 230 is disposed within each strip-shaped groove 215. The length direction of the strip-shaped groove 215 is consistent with the length direction of the support bar 230. Each support bar 230 is connected to its corresponding support body 210 via an adjustment assembly 700. Each adjustment assembly 700 is used to drive its corresponding support bar 230 to extend out of the strip-shaped groove 215 or retract into the strip-shaped groove 215 along the radial direction of the outer arc surface of the support body 210. The outer side surface of each support bar 230 is used to support the inner side surface of the split body 500 of the split main heater on the support assembly 200. The outer side surface of the support bar 230 is an arc surface.

[0072] Specifically, if Figures 6 to 10 As shown, when the operator places each split body 500 of the split main heater on the corresponding support assembly 200, the support bar 230 can be driven by the adjustment assembly 700 to extend radially along the outer arc surface of the support body 210 to the outside of the strip groove 215, or retract inwardly into the strip groove 215 to adapt to the inner side surface of the split body 500 of the split main heater. The outer side surface of the support bar 230 contacts the inner side surface of the split body 500 to provide support. As a result, the adaptability of the device is effectively improved. The design of the strip groove 215 allows the support bar 230 to extend and retract radially along the outer arc surface of the support body 210, thereby better adapting to the various split bodies 500 of the split main heater with different diameters.

[0073] Here, it should be noted that the present application does not limit the number of the strip grooves 215, which can be one, two, three or more, as long as the support bars 230 can be provided in the strip grooves 215. The support bars 230 are used to support the inner side of the split body 500 of the split main heater. For example, Figure 8 As shown, a strip groove 215 can be provided on each side of the outer arc surface of the support body 210, that is, two strip grooves 215 can be provided on the outer arc surface of a support body 210, or a strip groove 215 can be provided in the middle of the outer arc surface of the support body 210, or three or more strip grooves 215 can be provided on the outer arc surface of the support body 210 evenly along the arc length of its outer arc.

[0074] In some embodiments of the present invention, Figures 6 to 10 As shown, each support bar 230 is connected to the support body 210 through two adjustment components 700, and the two adjustment components 700 are arranged at intervals along the length direction of the support bar 230. Each adjustment component 700 may include: a ball cap 710, a ball head 720 and a ball screw 730. Among them, the ball cap 710 is set on the support bar 230. The ball head 720 is hinged in the ball cap 710. The ball screw 730 is arranged radially along the outer arc surface of the support body 210, and a threaded through hole 216 for threaded connection with the ball screw 730 is provided in the strip groove 215. One end of the ball screw 730 passes through the threaded through hole 216 and is connected to the ball head 720.

[0075] Thus, the design of the ball screw 730 allows the support bar 230 to be precisely adjusted radially along the outer arc surface of the support body 210, improving adjustment accuracy. The ball head 720 can rotate freely within the ball cap 710, allowing the support bar 230 to automatically adjust in multiple directions. This allows the support bar 230 to better fit the inner surface of the split body 500 during adjustment, improving support stability and accommodating split main heaters 500 of different diameters.

[0076] In some embodiments of the present invention, Figure 1 and Figure 7As shown, each clamping mechanism 400 is arranged at the top of the corresponding support assembly 200, and each clamping mechanism 400 may include: a pressing plate 410 and a screw 420. Among them, the pressing plate 410 is used to press the top of the split 500 of the split main heater on the corresponding support assembly 200. The pressing plate 410 is provided with an adjustment long hole (not shown) along its length. The screw 420 is arranged along the axial direction of the base 100, and a locking nut 430 is provided on the screw 420. The screw 420 is connected to the support assembly 200. The top of the support assembly 200 is correspondingly provided with a locking hole 217 for threaded connection with the screw 420. The screw 420 passes through the adjustment long hole and the locking hole 217 in sequence, and the pressing plate 410 is locked to the support assembly 200 through the locking nut 430.

[0077] Specifically, by providing an adjustable slot on the pressing plate 410, the pressing plate 410 can adapt to and compress the corresponding split bodies 500 of varying wall thicknesses. Furthermore, the screw 420 is arranged axially along the base 100, allowing the pressing plate 410 to adapt to and compress the corresponding split bodies 500 of varying heights. This effectively improves the adaptability of the pressing mechanism 400.

[0078] Based on the above-mentioned embodiments of the present invention, in the absence of explicit negation or conflict, the technical features of one embodiment may be beneficially combined with one or more other embodiments.

[0079] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A processing fixture for clamping and fixing the split body of the split main heater during the processing of the split main heater, characterized in that: include: A base, the base being disc-shaped and being used for being placed on a processing platform; a plurality of support assemblies, the plurality of support assemblies being arranged on the upper surface of the base and uniformly distributed along the circumference of the base, each of the support assemblies being used to support one split of the split main heater; A plurality of driving devices, wherein the plurality of driving devices are disposed on the base, the driving devices are connected to the support assemblies in a one-to-one correspondence, and each of the driving devices is used to drive the corresponding support assembly to move radially along the base to dock the respective split parts of the split main heater; There are multiple pressing mechanisms, and each supporting assembly is provided with at least one pressing mechanism. Each pressing mechanism is used to press the split of the split main heater on the supporting assembly corresponding thereto.

2. The processing fixture according to claim 1, characterized in that: Each of the support assemblies comprises: The support body has an outer side surface that is an arc surface and is coaxial with the base, and the outer side surface of the support body is used to cooperate with the inner side surface of the split body of the split main heater.

3. The processing fixture according to claim 2, characterized in that: Each of the driving devices is a screw transmission device, each of the screw transmission devices is arranged along the radial direction of the base, the bottom of each support body is provided with a protrusion for connecting with the screw transmission device, and the base is provided with a guide groove for sliding connection with each of the protrusions, each of the screw transmission devices is located below its corresponding support body, and each of the guide grooves extends along the radial direction of the base.

4. The processing fixture according to claim 3, characterized in that: A bottom plate is provided at the bottom of each support body, the protrusion is provided on the lower surface of the bottom plate, the bottom plate is parallel to the base, and the bottom plate is used to support the split bottom of the split main heater on the support assembly.

5. The processing fixture according to claim 4, characterized in that: The bottom plate is provided with a first positioning hole, and the base is provided with a row of second positioning holes corresponding to each of the first positioning holes, and the arrangement direction of each row of the second positioning holes is parallel to the length direction of the guide groove; Each of the support assemblies further includes a positioning pin, which is used to sequentially pass through the first positioning hole and the second positioning hole corresponding to the first positioning hole to position the support body on the base.

6. The processing fixture according to claim 4 or 5, characterized in that: A connecting hole is provided on the end of the bottom plate close to the axis of the base, and a first long hole corresponding to each connecting hole is provided on the base, and the length direction of each first long hole is parallel to the length direction of the guide groove. A fastener is also provided on the base, and the fastener passes through the connecting hole and the first long hole corresponding to the connecting hole in sequence to lock the support body on the base.

7. The processing fixture according to claim 4, characterized in that: It also includes a plurality of guide mechanisms, each supporting assembly corresponds to at least one guide mechanism, each guide mechanism is arranged on the base and its length direction is parallel to the length direction of the guide slot, and each guide mechanism is used to guide the movement of the supporting assembly corresponding thereto; Each of the guide mechanisms comprises: A linear guide rail, wherein the linear guide rail is arranged on the base, and the length direction of the linear guide rail is parallel to the length direction of the guide groove; A slider is fixedly connected to the lower surface of the base plate and is slidably connected to the linear guide rail.

8. The processing fixture according to claim 2, characterized in that: The outer arc surface of the support body is provided with at least one strip groove, each of the strip grooves extending axially along the outer arc surface of the support body, a support bar is provided in each strip groove, the length direction of the strip groove is consistent with the length direction of the support bar, each support bar is connected to its corresponding support body through an adjustment component, each adjustment component is used to drive its corresponding support bar to extend out of the strip groove or retract into the strip groove along the radial direction of the outer arc surface of the support body, and the outer side surface of each support bar is used to support the inner side surface of the split main heater on the support assembly; The outer side surface of the support bar is an arc surface.

9. The processing fixture according to claim 8, characterized in that: Each of the support bars is connected to the support body via two adjustment components, and the two adjustment components are spaced apart along the length direction of the support bar; Each of the regulating components comprises: a ball cap, the ball cap being arranged on the support bar; a ball head hinged in the ball head cap; A ball screw is arranged radially along the outer arc surface of the support body, a threaded through hole for threaded connection with the ball screw is provided in the strip groove, and one end of the ball screw passes through the threaded through hole and is connected to the ball head.

10. The processing fixture according to claim 1, characterized in that: Each of the pressing mechanisms is disposed on the top of the corresponding support assembly, and each of the pressing mechanisms comprises: A pressing plate, the pressing plate is used to press the split top of the split main heater on the corresponding supporting assembly, and the pressing plate is provided with an adjustment long hole along its length; A screw rod is arranged along the axial direction of the base, a locking nut is provided on the screw rod, the screw rod is connected to the support assembly, and a locking hole for threaded connection with the screw rod is provided at the top of the support assembly. The screw rod passes through the adjustment long hole and the locking hole in sequence, and the pressure plate is locked to the support assembly through the locking nut.

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