Carbon fiber composite material shell and machining method and positioning tool thereof

Abstract

The invention discloses a carbon fiber composite material shell and a machining method and a positioning tool thereof in the technical field of fiber composite material machining and manufacturing. The machining method comprises the steps that S1, benchmark machining preparation is conducted, specifically, the cleaned shell is placed on a tool prepared for cleaning; s2, processing a front skirt reference: processing by taking the center of the outer circle (concentric with the rear joint) of the reference block on the rear skirt end surface, the center line of the front joint phi hole and the tool supporting plane as the reference; s3, processing a back skirt reference; s4, semi-finish machining and finish machining of the shell, wherein the front skirt and the rear skirt are machined according to the machining standard; through mutual cooperation of the lifting assembly and the linkage assembly, after the position of the toad pincers is adjusted, when the toad pincers are fixed to the supporting plate, the pre-positioning assembly can be controlled to descend through transmission of the lifting assembly and the linkage assembly at the same time, so that the shell subjected to pre-positioning directly descends and is fixed through the toad pincers; therefore, the fixing work of the toad forceps can be quickly improved.

Description

Technical Field

[0001] The invention relates to the technical field of fiber composite material processing and manufacturing, and in particular to a carbon fiber composite material shell and a processing method and a positioning tool thereof. Background Art

[0002] The composite shell is a large-size thin-walled structure, which is mainly composed of the shell body structure, front and rear joints, front and rear skirts, etc. During the processing, high requirements are placed on the front and rear skirt dimensions, opening accuracy, position accuracy, coaxiality, etc. However, due to its own characteristics, composite materials are prone to deformation and out-of-roundness after demolding, which has a great impact on the processing process. It is difficult to ensure the design accuracy requirements only by relying on the accuracy of the machine tool itself.

[0003] The existing processing method is to place the shell upright on the tooling, and use the tooling to fix the shell. The preload should not be too large to avoid large deformation caused by the installation; according to the detection of the front and rear joint end face runout, the coaxiality of the center axis of the front and rear joint inner hole, etc., the front and rear skirt end face runout is adjusted to ensure that the error is within 0.4mm, and the processing benchmark is determined; due to the large skirt assembly error, it directly affects the parallelism of the skirt end face with the front and rear joint end faces; the front and rear joint composite material installation and curing accuracy is low, which directly affects the coaxiality of the center axis of the front and rear joint inner hole. After the front and rear joint end face runout is aligned to within 0.4mm, the front skirt end face runout is about 2mm. Although it can be fully processed, it affects the thickness of the skirt. After the processing is completed, the shell is tested and it is known that the product processed by this method has a large error and a high scrap rate, which cannot meet the design requirements and mass production needs. It is necessary to improve the processing method to ensure the processing quality and reduce the scrap rate.

[0004] Secondly, when the existing homemade tooling is used to fix the shell, it is necessary to manually adjust the tooling clamping points continuously, which leads to low efficiency of tooling fixation, inability to quickly position the shell, and inability to perform subsequent shell processing and manufacturing, which cannot meet existing needs. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a carbon fiber composite material shell and a processing method and a positioning tool thereof.

[0006] The object of the present invention is achieved by: a carbon fiber composite material shell, comprising: The shell is composed of a front skirt and a rear skirt. The front skirt is arranged on the upper surface of the rear skirt, and the front skirt and the rear skirt are arranged to be engaged with each other around the opposite sides.

[0007] A processing method for a carbon fiber composite material shell: The shell manufacturing processing method is as follows: S1. Benchmark processing preparation: The cleaned shell is placed on the cleaned and prepared tooling, and the shell is fixed by the tooling; S2. Processing the front skirt datum: Processing is performed based on the center of the outer circle of the datum block on the rear skirt end surface (concentric with the rear joint), the center line of the φ hole of the front joint, and the tooling support plane. If the end face runout of the front joint exceeds 0.4mm, turn over and re-process the end face and outer circle of the auxiliary datum block on the rear skirt surface. Adjust the tooling and shell according to the position of the detected excess value, and repeat the above process steps to process the rear skirt datum block. After processing, measure the end face runout value of the front joint under stable turning and clamping to see if it is appropriate, until the end face runout of the front and rear joints is within 0.4mm; according to the adjustment results, process the front skirt end face, inner and outer circles, end face holes, process holes and other design requirements. After processing, re-test the accuracy and precision of the processing datum; S3, Processing the rear skirt datum: Use a tool with xφ positioning pins to place the rear joint face up on the tool, level the exposed part of the front skirt end face as the datum plane, and select the φ process pin hole position in quadrants I and III for positioning. The center of the inner hole of the rear joint and the center line of the tool ×φ positioning pin are used as the processing datum. According to the determined rear skirt processing datum, the rear skirt end face, inner and outer circles, end face holes, etc. are processed, and the processing accuracy is tested to see if it meets the design requirements. During the processing, attention should be paid to the retention of processing allowance and the determination of the process hole position, in preparation for subsequent processing; S4. Semi-finishing and finishing shell: According to the above-mentioned processing datum, the front and rear skirts are processed. The processing procedures are divided into semi-finishing and finishing. The processing methods and clamping methods are consistent. The processing allowance is removed according to the process arrangement to ensure the design requirements of the drawing. The processing process is mainly based on the above-mentioned process holes to determine the processing datum and positioning requirements, and after the processing is completed, the process holes are processed to the design value to ensure the design dimensional accuracy and surface roughness requirements. Finally, the reliability and accuracy of the processing method are confirmed through instrument detection.

[0008] Optionally, the specific steps of S1 above include the following: S11. Material preparation: Clean the outer surface of the shell to ensure there is no foreign matter; S12. Preparation before processing: clean the machine tool table, the supporting surface and positioning surface of the self-made tooling, and install the tooling; S13, Positioning preparation: Use the toad pliers to slightly press the side to ensure that the shell does not move; S14, Inspection work: After pressing, check that the gap between the shell and the tooling is not greater than 0.05.mm. If it fails, use copper foil of corresponding thickness to fill it; S15. Finish the alignment work: After the alignment is completed, install the rear joint plug cover to prevent foreign matter from entering the cylinder during processing.

[0009] A positioning tool for a carbon fiber composite material shell, comprising: A bearing base and multiple groups of support plates, wherein the multiple groups of support plates are arranged in a ring shape and equidistantly around the upper surface of the bearing base, and the upper surfaces of the multiple groups of support plates are all slidably connected with toad clamps, and the shell is detachably connected to the support plates through the toad clamps; A pre-positioning component, wherein the pre-positioning component is provided in multiple groups, and the pre-positioning component is provided in pairs with the support plate, the pre-positioning component is provided on one side of the support plate close to the center of the bearing base, a lifting slot is provided on one side of the support plate, a lifting component is provided on one side of the lifting slot, and the pre-positioning component is transmission-connected with the lifting component, so that the pre-positioning component is provided for lifting and lowering movement on one side of the support plate through the lifting component; A linkage assembly, wherein the linkage assembly is provided in multiple groups, and the linkage assembly is provided in pairs with the toad clamp, the toad clamp and the lifting assembly are both transmission-connected with the linkage assembly, and the linkage assembly is provided between the toad clamp and the lifting assembly, so that the toad clamp is transmission-connected with the lifting assembly through the linkage assembly; A fine-tuning assembly, wherein the fine-tuning assembly is provided with multiple groups, and the fine-tuning assembly is provided in pairs with the support plate, and the fine-tuning assembly is composed of two groups of pads and a lifting mechanism, both ends of one side of the upper surface of the support plate are provided with storage grooves, and the pads are slidably installed inside the storage grooves, and the lifting mechanism is provided on one side of the support plate, and the two groups of pads are both transmission-connected with the lifting mechanism, so that the two groups of pads are close to or away from the upper surface of the support plate through the lifting mechanism.

[0010] Optionally, the toad pliers are composed of a pliers handle body, a jaw and an extended pliers plate, a threaded hole is opened at one end of the upper surface of the pliers handle body, and a fixing bolt is threadedly connected inside the threaded hole, the pliers handle body is slidably installed on the upper surface of the support plate, so that the pliers handle body is fixed to the support plate by the fixing bolt, the jaw is slidably installed on the upper surface of the pliers handle body, and the jaw is fixed to the pliers handle body by the fixing bolt, and the extended pliers plate is movably installed at one end of the jaw.

[0011] Optionally, an extension screw is fixedly installed at the center of one side of the extension jaw plate close to the jaw, a movable groove is opened at the center of one end of the jaw, and an adjustment groove is opened on the upper surface of the jaw, the adjustment groove and the movable groove are connected to each other, an extension knob is rotatably connected inside the adjustment groove, the extension knob is threadedly sleeved on the outside of the extension screw, and both ends of one side of the extension jaw are slidably connected to one end of the jaw.

[0012] Optionally, the lifting mechanism includes a fine-tuning screw and a threaded sleeve, the lower end of the fine-tuning screw is rotatably connected to a fixed base, the fixed base is fixedly installed on one side of the support plate, the lower end of the fine-tuning screw is fixedly installed with a driving rod, the upper end of the driving rod passes through the bottom of the support plate, the threaded sleeve is threadedly sleeved on the outside of the fine-tuning screw, the threaded sleeve is composed of two groups of half-threaded sleeves, the upper ends of the two groups of half-threaded sleeves on the side away from each other are fixedly installed with a linkage screw, the same end of the two groups of pads are fixedly installed with a positioning shell, one end of the linkage screw is slidably installed inside the positioning shell, and one end of the positioning shell is rotatably connected to a driving knob, and the driving knob is threadedly sleeved on the outside of the linkage screw.

[0013] Optionally, the pre-positioning assembly includes a carrying plate and an auxiliary support seat, an inclined surface is formed on one side of the carrying plate, and the inclined surface is arranged in contact with the outer side of the shell, the auxiliary support seat is fixedly installed on one end of the upper surface of the carrying plate, a lifting seat is slidably connected to the inside of the lifting groove, the lifting seat is rotatably connected to the carrying plate, a threaded groove is provided on the upper surface of the lifting seat, a fastening bolt is threadedly connected to the inside of the threaded groove, the carrying plate is threadedly connected to the fastening bolt, and the carrying plate is threadedly connected to the lifting seat, so that the carrying plate and the lifting seat are fixed to each other by the fastening bolt.

[0014] Optionally, the lifting assembly includes a lifting screw, a groove is opened on one side of the lifting slot, the lifting screw is rotatably installed in the groove, and an adjustment plate is threadedly connected to the outer side of the lifting screw, the adjustment plate is fixedly connected to the lifting seat, a connecting rod is fixedly installed on the upper end of the lifting screw, a transmission groove is opened at one end of the upper surface of the support plate, and the interior of the transmission groove is communicated with the interior of the groove, one end of the connecting rod is transmission-connected to the linkage assembly, and the linkage assembly is arranged in the transmission groove.

[0015] Optionally, the linkage assembly includes two groups of first synchronous wheels and two groups of second synchronous wheels, wherein a linkage rod is fixedly installed on the upper surface of one group of the first synchronous wheels, a square rod is fixedly installed on the upper end of the linkage rod, a sliding groove is opened at the bottom of the fixing bolt, and one end of the square rod is slidably installed in the sliding groove, a synchronous belt is sleeved between the two groups of the first synchronous wheels, a pushing sleeve is rotatably sleeved on the lower end of the outer side of one group of the first synchronous wheels, a pushing rod is fixedly installed on the outer side of the pushing sleeve, and one end of the pushing rod is rotatably connected to the upper surface of the other group of the first synchronous wheels, and another group of synchronous belts is sleeved between the two groups of the second synchronous wheels, a synchronous rod is fixedly installed on the bottom of one group of the second synchronous wheels, and a driving gear is fixedly installed on the lower end of the synchronous rod, the driving gear is rotatably installed at the lower end inside the transmission groove, one side of the driving gear is meshed with a driven gear, and the driven gear is rotatably installed in the transmission groove, the bottom center of the driven gear is fixedly connected to the upper end of the connecting rod, the other group of the second synchronous wheels and the other group of the first synchronous wheels are fixedly arranged at the center, and the other group of the second synchronous wheels are rotatably connected at the bottom with a sliding rod, and the sliding rod is slidably installed in the transmission groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The middle auxiliary block is used to link the position relationship of the front and rear joints and the front and rear skirts, adjust the processing state to a satisfactory level, and process within the tolerance required by the drawing. The previous processing method was to adjust the front and rear joints and the front and rear skirts at the same time, which was time-consuming and the proofreading accuracy was greatly affected by the deformation of the composite material product itself, resulting in low processing accuracy and high scrap rate. After processing and debugging using this method, the processing accuracy is greatly improved and the scrap rate is greatly reduced.

[0017] 2. Through the design of the pre-positioning component, the pre-positioning component can quickly center and horizontally position the shell, speed up the debugging efficiency of the shell on the tooling, and further improve the processing efficiency of the shell.

[0018] 3. Through the cooperation of the lifting assembly and the linkage assembly, after the position of the toad clamp is adjusted and it is fixed to the support plate, the pre-positioning assembly can be controlled to descend at the same time by transmitting the lifting assembly and the linkage assembly, so that the pre-positioned shell can be directly lowered and fixed by the toad clamp, thereby quickly improving the fixing work of the toad clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure provided by the present invention; Figure 2 It is a schematic diagram of the support plate structure provided by the present invention; Figure 3 It is a schematic diagram of the structure of the lifting assembly provided by the present invention; Figure 4 It is a schematic diagram of the pad structure provided by the present invention; Figure 5 It is a schematic diagram of the structure of the fine-tuning screw provided by the present invention; Figure 6 It is a schematic diagram of the structure of the extension screw provided by the present invention; Figure 7 It is a schematic diagram of the fixing bolt structure provided by the present invention; Figure 8 It is a schematic diagram of the structure of the bearing plate provided by the present invention; Fig. 9 It is a schematic diagram of the linkage assembly structure provided by the present invention; Fig.10 It is a schematic diagram of the structure of the synchronous motor provided by the present invention.

[0021] In the figure: 1, housing; 2, support plate; 3, bearing base; 4, toad clamp; 5, pre-positioning assembly; 6, fixing bolt; 7, transmission groove; 8, fastening bolt; 9, lifting assembly; 10, fine adjustment assembly; 11, extension screw rod; 12, extension knob; 13, square rod; 14, linkage assembly; 15, front skirt; 16, rear skirt; 17, lifting sleeve; 18, guide rod; 19, synchronous motor; 401, jaw; 402, clamp handle; 403, extension clamp plate; 501, bearing plate; 502, auxiliary support seat; 503, lifting seat; 90 1. Lifting screw; 902. Adjustment plate; 903. Connecting rod; 101. Positioning shell; 102. Linkage screw; 103. Driving knob; 104. Semi-threaded sleeve; 105. Fine-tuning screw; 106. Driving rod; 107. Fixed base; 108. Pad; 1401. Linkage rod; 1402. Push sleeve; 1403. Push rod; 1404. Sliding rod; 1405. First synchronous wheel; 1406. Second synchronous wheel; 1407. Driving gear; 1408. Driven gear; 1409. Synchronous rod; 1410. Synchronous belt. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0023] like Figures 1 to 10 A carbon fiber composite material shell shown includes: The shell body 1 is composed of a front skirt 15 and a rear skirt 16. The front skirt 15 is arranged on the upper surface of the rear skirt 16, and the front skirt 15 and the rear skirt 16 are arranged to be engaged with each other around the opposite sides.

[0024] A method for processing a carbon fiber composite material shell, the shell 1 manufacturing method is as follows: S1. Benchmark processing preparation: The cleaned shell 1 is placed on the cleaned and prepared tooling, and the shell 1 is fixed by the tooling.

[0025] S2. Processing the front skirt 15 datum: The outer circle center of the datum block on the end face of the rear skirt 16 is processed with the concentric circle of the rear joint and the center line of the φ230 hole of the front joint and the tooling support plane as the datum. If the end face runout of the front joint exceeds 0.4mm, turn it over and re-process the end face and outer circle of the auxiliary datum block on the rear skirt 16 surface, adjust the tooling and shell 1 according to the position of the detected excess value, repeat the above process steps to process the rear skirt 16 datum block, and after the processing is completed, measure the front joint end face runout value to see if it is appropriate under stable clamping, until the end face runout of the front and rear joints is within 0.4mm; according to the adjustment results, process the front skirt 15 end face, inner and outer circles, end face holes and process holes and other design requirements, and re-check the accuracy and precision of the processing datum after the processing is completed.

[0026] S3, Processing the datum of the rear skirt 16: Use a tool with 2xφ8 locating pins to place the rear joint face up on the tool, level the exposed part of the front skirt 15 end face as the datum plane, and select the φ8 process pin hole position in the I and III quadrants for positioning. The center of the inner hole of the rear joint and the center line of the 2×φ8 locating pins of the tool are used as the processing datum. According to the determined processing datum of the rear skirt 16, the end face, inner and outer circles, and end face holes of the rear skirt 16 are processed, and the processing accuracy is tested to see if it meets the design requirements. During the processing, attention should be paid to the retention of the processing allowance and the determination of the process hole position, in preparation for subsequent processing.

[0027] S4. Semi-finishing and finishing of shell 1: According to the aforementioned processing datum, the front and rear skirts 16 are processed. The processing procedures are divided into semi-finishing and finishing. The processing methods and clamping methods are consistent. The processing allowance is removed according to the process arrangement to ensure the design requirements of the drawing. The processing process mainly determines the processing datum and positioning requirements based on the process holes determined above, and after the processing is completed, the process holes are processed to the design values ​​to ensure the design dimensional accuracy and surface roughness requirements. Finally, the reliability and accuracy of the processing method are confirmed through instrument detection.

[0028] The specific steps of S1 above include the following: S11. Material preparation: Clean the outer surface of the shell 1 to ensure that there is no foreign matter.

[0029] S12. Preparation before processing: Clean the machine tool workbench, the supporting surface and positioning surface of the self-made tooling, and install the tooling.

[0030] S13, positioning preparation: use the toad clamp 4 to slightly press sideways to ensure that the housing 1 does not move.

[0031] S14, inspection work: After pressing, check that the gap between the shell 1 and the tooling is not greater than 0.05mm. If it is unqualified, use copper foil of corresponding thickness to fill it.

[0032] S15. Finish the alignment work: After the alignment is completed, install the rear joint plug cover to prevent foreign matter from entering the cylinder during processing.

[0033] According to the processing method for the housing (1), the steps are to determine the processing reference of the front and rear skirts 16 by means of the auxiliary block, firstly turn the rear joint upward, adjust the positional relationship between the auxiliary block and the rear joint, and process the auxiliary block so that the center of the auxiliary block is concentric with the center of the rear joint, so as to facilitate the adjustment of the positional relationship between the front joint and the front skirt 15 through the rear joint; after turning over, use the processed auxiliary block to process the front joint and the front skirt 15 according to the requirements of the drawing, and determine the position of the process hole, so as to facilitate the subsequent processing of the rear skirt 16; after processing the front skirt 15 according to the requirements of the drawing, remove the auxiliary block, and use the processed process hole to process the rear skirt 16, and ensure the processing accuracy and roughness.

[0034] This processing method utilizes the function of the middle auxiliary block to link the positional relationship between the front and rear joints and the front and rear skirts 16, adjusts the processing state to a satisfactory level, and performs processing within the tolerance required by the drawing; the previous processing method is to adjust the front and rear joints and the front and rear skirts 16 at the same time, the adjustment is time-consuming and the proofreading accuracy is greatly affected by the deformation of the composite material product itself, the processing accuracy is low, and the scrap rate is high; after processing and debugging using this method, the processing accuracy is greatly improved and the scrap rate is greatly reduced.

[0035] like Figures 1 to 9As shown, a positioning tool for a carbon fiber composite material shell includes: a bearing base 3 and multiple groups of support plates 2, the multiple groups of support plates 2 are arranged in a ring shape and equidistantly around the upper surface of the bearing base 3, and the upper surfaces of the multiple groups of support plates 2 are all slidably connected with toad clamps 4, and the shell 1 is detachably connected to the support plates 2 through the toad clamps 4; like Figures 1 to 9 As shown, by designing that multiple groups of support plates 2 are arranged in a circular shape and equidistantly around the upper surface of the supporting base 3, and multiple groups of support plates 2 are each provided with a toad clamp 4, the housing 1 can be stably positioned and fixed on the tooling.

[0036] Pre-positioning components 5, multiple groups of pre-positioning components 5 are provided, and the pre-positioning components 5 and the support plate 2 are provided in pairs, the pre-positioning components 5 are provided on one side of the support plate 2 close to the center of the bearing base 3, a lifting groove is provided on one side of the support plate 2, a lifting component 9 is provided on one side of the lifting groove, and the pre-positioning components 5 are transmission-connected with the lifting component 9, so that the pre-positioning components 5 are lifted and lowered on one side of the support plate 2 through the lifting component 9; like Figures 1 to 9 As shown, due to the design that the pre-positioning component 5 is lifted and lowered on one side of the support plate 2 by the lifting component 9, multiple groups of pre-positioning components 5 cooperate with each other to stably support the shell 1, and the shell 1 can cooperate with the pre-positioning component 5 and rely on the characteristics of its own outer arc shape to quickly straighten itself and achieve pre-positioning, thereby facilitating the subsequent rapid fixation of the toad clamp 4 without multiple manual adjustments.

[0037] The linkage assembly 14 is provided with multiple groups, and the linkage assembly 14 is provided in pairs with the toad clamp 4, the toad clamp 4 and the lifting assembly 9 are both transmission-connected with the linkage assembly 14, and the linkage assembly 14 is provided between the toad clamp 4 and the lifting assembly 9, so that the toad clamp 4 is transmission-connected with the lifting assembly 9 through the linkage assembly 14; like Figures 1 to 9 As shown, due to the design that the toad clamp 4 is connected to the lifting component 9 through the linkage component 14, when the toad clamp 4 is fixed, it can control the lifting component 9 to transmit the pre-positioning component 5 to rise and fall through the linkage component 14. Therefore, after the shell 1 is pre-positioned and the position of the toad clamp 4 is adjusted and fixed, the pre-positioning component 5 can be lowered to slowly place the shell 1 on the support plate 2, and then the toad clamp 4 can directly squeeze and fix the shell 1.

[0038] The fine-tuning assembly 10 is provided with multiple groups, and the fine-tuning assembly 10 is arranged in pairs with the support plate 2. The fine-tuning assembly 10 is composed of two groups of pads 108 and a lifting mechanism. Both ends of one side of the upper surface of the support plate 2 are provided with storage grooves, and the pads 108 are slidably installed inside the storage grooves. The lifting mechanism is arranged on one side of the support plate 2. Both groups of pads 108 are connected to the lifting mechanism in a transmission manner, so that both groups of pads 108 are close to or away from the upper surface of the support plate 2 through the lifting mechanism. like Figures 1 to 9 As shown, since the two sets of pads 108 are designed to be close to or away from the upper surface of the support plate 2 through the lifting mechanism, when the unqualified shell 1 is placed on the upper surface of the support plate 2, a gap will be generated between the unqualified shell 1 and the support plate 2. At this time, the pads 108 are lifted and lowered to fill the gap, so that the pads 108 cooperate with the support plate 2 to facilitate stable support of the unqualified shell.

[0039] Furthermore, the toad pliers 4 are composed of a pliers handle body 402, a jaw 401 and an extended pliers plate 403. A threaded hole is provided at one end of the upper surface of the pliers handle body 402, and a fixing bolt 6 is connected to the threaded hole through a thread. The pliers handle body 402 is slidably mounted on the upper surface of the support plate 2, so that the pliers handle body 402 is fixed to the support plate 2 by the fixing bolt 6, and the jaw 401 is slidably mounted on the upper surface of the pliers handle body 402, and the jaw 401 is fixed to the pliers handle body 402 by the fixing bolt 6. The extension pliers 403 is movably mounted on one end of the jaw 401; an extension screw rod 11 is fixedly mounted on the center of one side of the extension pliers 403 close to the jaw 401, a movable groove is provided at the center of one end of the jaw 401, and an adjustment groove is provided on the upper surface of the jaw 401, the adjustment groove and the movable groove are connected to each other, an extension knob 12 is rotatably connected inside the adjustment groove, the extension knob 12 is threadedly sleeved on the outside of the extension screw rod 11, and both ends of one side of the extension jaw 401 are slidably connected to one end of the jaw 401; like Figures 1 to 9 As shown, through the design that the extension knob 12 is threadedly sleeved on the outside of the extension screw rod 11, the extension clamp plate 403 can be close to or away from the jaws 401 under the cooperation of the extension knob 12 and the extension screw rod 11, thereby increasing the practicality of the toad clamp 4, and further performing corresponding adjustments according to the requirements of the clamping points of different shells 1.

[0040] Furthermore, the lifting mechanism includes a fine-tuning screw 105 and a threaded sleeve, the lower end of the fine-tuning screw 105 is rotatably connected to a fixed base 107, the fixed base 107 is fixedly installed on one side of the support plate 2, the lower end of the fine-tuning screw 105 is fixedly installed with a driving rod 106, the upper end of the driving rod 106 passes through the bottom of the support plate 2, the threaded sleeve is threadedly sleeved on the outside of the fine-tuning screw 105, the threaded sleeve is composed of two groups of half threaded sleeves 104, the upper ends of the two groups of half threaded sleeves 104 on the side away from each other are fixedly installed with a linkage screw 102, the same end of the two groups of pads 108 are fixedly installed with a positioning shell 101, one end of the linkage screw 102 is slidably installed inside the positioning shell 101, and one end of the positioning shell 101 is rotatably connected to a driving knob 103, and the driving knob 103 is threadedly sleeved on the outside of the linkage screw 102; like Figures 1 to 9 As shown, through the design that the driving knob 103 is threadedly sleeved on the outside of the linkage screw 102, the two groups of half-threaded sleeves 104 can be moved closer to or farther away from each other through the cooperation of the linkage screw 102 and the driving knob 103. When one group of half-threaded sleeves 104 contacts the outside of the fine-tuning screw 105, the fine-tuning screw 105 rotates, which can drive a pad 108 to rise and fall independently. When the two groups of half-threaded sleeves 104 are close to each other and spliced ​​to form a threaded sleeve, the fine-tuning screw 105 can drive the two groups of pads 108 to rise and fall at the same time. Therefore, through the modular design of the two groups of half-threaded sleeves 104 that can be spliced, effective support can be provided for different unqualified shells.

[0041] Further, the pre-positioning component 5 includes a bearing plate 501 and an auxiliary support seat 502. An inclined surface is formed on one side of the bearing plate 501, and the inclined surface is arranged in contact with the outer side of the shell 1. The auxiliary support seat 502 is fixedly installed on one end of the upper surface of the bearing plate 501. A lifting seat 503 is slidably connected inside the lifting groove. The lifting seat 503 is rotatably connected to the bearing plate 501. A threaded groove is provided on the upper surface of the lifting seat 503. A fastening bolt 8 is threadedly connected inside the threaded groove. The bearing plate 501 is threadedly connected to the fastening bolt 8, so that the bearing plate 501 and the lifting seat 503 are fixed to each other through the fastening bolt 8. like Figures 1 to 9 As shown, since the carrying plate 501 is fixed to the lifting seat 503 by the fastening bolts 8, when the carrying plate 501 is not needed, the fastening bolts 8 can be removed and the carrying plate 501 can be rotated and folded for storage.

[0042] The auxiliary support base 502 is fixedly mounted on one end of the upper surface of the carrier plate 501, such as Figure 1 and Figure 2As shown, the inclined surface of the supporting plate 501 is arranged in an arc shape, and the angle of the arc is in contact with the outer side of the shell 1, so that the supporting plate 501 can hold up the shell 1 more stably. At the same time, the auxiliary support seat 502 can drag the outer bottom of the shell 1 to a horizontal position, and multiple groups of auxiliary support seats 502 are at the same level. The shell 1 can be directly placed in a horizontal state on the upper surface of the supporting plate 501 and the auxiliary support seat 502 due to its own weight and the characteristics of the outer arc, and the center part of the shell 1 is automatically calibrated, so as to facilitate the subsequent fixation of the toad clamp 4, thereby further improving the efficiency of the tooling to fix the shell 1.

[0043] Further, the lifting assembly 9 includes a lifting screw 901, a groove is provided on one side of the lifting groove, the lifting screw 901 is rotatably installed in the groove, and an adjustment plate 902 is connected to the outer side of the lifting screw 901 by a thread, the adjustment plate 902 is fixedly connected to the lifting seat 503, a connecting rod 903 is fixedly installed on the upper end of the lifting screw 901, a transmission groove 7 is provided on one end of the upper surface of the support plate 2, and the inside of the transmission groove 7 is communicated with the inside of the groove, one end of the connecting rod 903 is transmission-connected to the linkage assembly 14, and the linkage assembly 14 is arranged inside the transmission groove 7; like Figures 1 to 9 As shown, by the design of fixed connection between the adjustment plate 902 and the lifting seat 503, when the adjustment plate 902 is lifted and lowered by the lifting screw 901, the lifting seat 503 can drive the carrying plate 501 and the auxiliary support seat 502 to lift and lower.

[0044] Further, the linkage assembly 14 includes two groups of first synchronous wheels 1405 and two groups of second synchronous wheels 1406, wherein a linkage rod 1401 is fixedly installed on the upper surface of one group of first synchronous wheels 1405, a square rod 13 is fixedly installed on the upper end of the linkage rod 1401, a sliding groove is provided at the bottom of the fixing bolt 6, one end of the square rod 13 is slidably installed inside the sliding groove, a synchronous belt 1410 is sleeved between the two groups of first synchronous wheels 1405, a push sleeve 1402 is rotatably sleeved at the lower end of the outer side of one group of first synchronous wheels 1405, a push rod 1403 is fixedly installed on the outer side of the push sleeve 1402, one end of the push rod 1403 is rotatably connected to the upper surface of the other group of first synchronous wheels 1405, and a sleeve is sleeved between the two groups of second synchronous wheels 1406. Another group of synchronous belts 1410 is provided, wherein a synchronous rod 1409 is fixedly installed at the bottom of one group of second synchronous wheels 1406, and a driving gear 1407 is fixedly installed at the lower end of the synchronous rod 1409, and the driving gear 1407 is rotatably installed at the lower end of the transmission groove 7, and a driven gear 1408 is meshed and connected to one side of the driving gear 1407, and the driven gear 1408 is rotatably installed inside the transmission groove 7, and the bottom center of the driven gear 1408 is fixedly connected to the upper end of the connecting rod 903, and the centers of another group of second synchronous wheels 1406 and another group of first synchronous wheels 1405 are fixed to each other, and the bottom of another group of second synchronous wheels 1406 is rotatably connected to the sliding rod 1404, and the sliding rod 1404 is slidably installed inside the transmission groove 7; like Figures 1 to 9 As shown, through the mutual cooperation of the two sets of first synchronous wheels 1405 and the two sets of second synchronous wheels 1406, after the position adjustment of the clamp handle body 402 is completed, when the clamp handle body 402 is fixed by rotating the fixing bolt 6, the fixing bolt 6 drives the linkage rod 1401 to rotate through the square rod 13. At this time, the two sets of first synchronous wheels 1405 and the two sets of second synchronous wheels 1406 are all under the cooperation of the synchronous belt 1410. The driving gear 1407 drives the driven gear 1408 to rotate, and the driven gear 1408 drives the lifting screw rod 901 to rotate through the connecting rod 903, so that the fixing bolt 6 is in the process of rotating, and the bearing plate 501 moves downward synchronously, lowers the shell 1, and makes the shell 1 in the best horizontal and stable state on the multiple sets of support plates 2.

[0045] Specifically, Fig.10 As shown, a guide rod 18 is fixedly installed on the upper end of the other side of the multiple groups of support plates 2, and a lifting sleeve 17 is provided on the outer sliding sleeve of the guide rod 18, and a mounting groove is opened at one end of the bottom of the lifting sleeve 17, and a synchronous motor 19 is arranged inside the mounting groove, and one end of the output shaft of the synchronous motor 19 is fixedly connected to the upper end of the fixing bolt 6.

[0046] It should be noted that in order to ensure the synchronous rotation of multiple groups of fixing bolts 6 and the synchronous lifting and lowering of multiple groups of pre-positioning components 5, multiple groups of synchronous motors 19 can be connected to each other to achieve synchronous rotation, so that the shell 1 can be stably controlled for pre-positioning and subsequent fixation of the toad clamp 4.

[0047] The above embodiments are only used to help understand the method and core idea of ​​the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A carbon fiber composite material shell, characterized in that: include: A shell (1), the shell (1) being composed of a front skirt (15) and a rear skirt (16), the front skirt (15) being arranged on the upper surface of the rear skirt (16), and the front skirt (15) and the rear skirt (16) being arranged to be mutually engaged around opposite sides.

2. A method for processing a carbon fiber composite material shell, characterized in that: The manufacturing method of the housing (1) is as follows: S1. Base processing preparation: The cleaned housing (1) is placed on a cleaned and prepared tooling, and the housing (1) is fixed by the tooling; S2. Processing the front skirt (15) datum: Processing is performed based on the center of the outer circle of the datum block on the end face of the rear skirt (16) (concentric with the rear joint), the center line of the φ230 hole of the front joint, and the tooling support plane. If the end face runout of the front joint exceeds 0.4 mm, turn over and re-process the end face and outer circle of the auxiliary datum block on the surface of the rear skirt (16). Adjust the tooling and the shell (1) according to the position of the detected excess value. Repeat the above process steps to process the rear skirt (16) datum block. After the processing is completed, measure the end face runout value of the front joint under stable clamping to see if it is appropriate, until the end face runout of the front and rear joints is within 0.4 mm. According to the adjustment results, process the end face, inner and outer circles, end face holes, process holes and other design requirements of the front skirt (15). After the processing is completed, re-test the accuracy and precision of the processing datum. S3, machining the rear skirt (16) datum: Use a tool with 2xφ8 locating pins to place the rear joint face upward on the tool, level the exposed part of the front skirt (15) end face as the datum plane, select the φ8 process pin hole position in the I and III quadrants for positioning, and use the center of the inner hole of the rear joint and the center line of the 2×φ8 locating pins of the tool as the machining datum. According to the determined machining datum of the rear skirt (16), the end face, inner and outer circles, end face hole, etc. of the rear skirt (16) are machined, and the machining accuracy is checked to see if it meets the design requirements. During the machining process, attention should be paid to the retention of machining allowance and the determination of the process hole position, so as to prepare for subsequent machining work; S4, semi-finishing and finishing of the shell (1): According to the above-mentioned processing datum, the front and rear skirts (16) are processed. The processing procedures are divided into semi-finishing and finishing. The processing method and clamping method are consistent. The processing allowance is removed according to the process arrangement to ensure the design requirements of the drawing. The processing process mainly determines the processing datum and positioning requirements based on the process holes determined above, and after the processing is completed, the process holes are processed to the design value to ensure the design dimensional accuracy and surface roughness requirements. Finally, the reliability and accuracy of the processing method are confirmed by instrument detection.

3. The method for processing a carbon fiber composite material shell according to claim 1, characterized in that: The specific steps of S1 above include the following: S11. Material preparation: clean the outer surface of the housing (1) to ensure that there is no foreign matter; S12. Preparation before processing: clean the machine tool table, the supporting surface and positioning surface of the self-made tooling, and install the tooling; S13, positioning preparation: use the toad clamp (4) to slightly press the side to ensure that the housing (1) does not move; S14, inspection work: after pressing, check that the gap between the housing (1) and the tooling is not greater than 0.05 mm. If it fails, fill it with copper foil of corresponding thickness; S15. Finish the alignment work: After the alignment is completed, install the rear joint plug cover to prevent foreign matter from entering the cylinder during processing.

4. A positioning tool for a carbon fiber composite material shell, characterized in that: include: A bearing base (3) and a plurality of groups of support plates (2), wherein the plurality of groups of support plates (2) are arranged in a circular shape and at equal intervals around the upper surface of the bearing base (3), and the upper surfaces of the plurality of groups of support plates (2) are all slidably connected with toad clamps (4), and the housing (1) is detachably connected to the support plates (2) via the toad clamps (4); A pre-positioning component (5), wherein the pre-positioning component (5) is provided in a plurality of groups, and the pre-positioning component (5) and the support plate (2) are provided in pairs, the pre-positioning component (5) is provided on a side of the support plate (2) close to the center of the bearing base (3), a lifting groove is provided on one side of the support plate (2), a lifting component (9) is provided on one side of the lifting groove, and the pre-positioning component (5) is transmission-connected to the lifting component (9), so that the pre-positioning component (5) is provided on one side of the support plate (2) for lifting and movement. A linkage assembly (14), wherein the linkage assembly (14) is provided in a plurality of groups, and the linkage assembly (14) and the toad clamp (4) are provided in pairs, the toad clamp (4) and the lifting assembly (9) are both transmission-connected to the linkage assembly (14), and the linkage assembly (14) is provided between the toad clamp (4) and the lifting assembly (9), so that the toad clamp (4) is transmission-connected to the lifting assembly (9) via the linkage assembly (14); A fine-tuning assembly (10), wherein a plurality of fine-tuning assemblies (10) are provided, and the fine-tuning assemblies (10) and the support plate (2) are provided in pairs, the fine-tuning assembly (10) being composed of two groups of pads (108) and a lifting mechanism, both ends of one side of the upper surface of the support plate (2) being provided with storage grooves, and the pads (108) being slidably mounted inside the storage grooves, the lifting mechanism being provided on one side of the support plate (2), and the two groups of pads (108) being transmission-connected to the lifting mechanism, so that the two groups of pads (108) are moved closer to or farther away from the upper surface of the support plate (2) through the lifting mechanism.

5. A positioning tool for a carbon fiber composite material shell according to claim 4, characterized in that: The toad pliers (4) are composed of a pliers handle body (402), a jaw (401) and an extended pliers plate (403). A threaded hole is provided at one end of the upper surface of the pliers handle body (402), and a fixing bolt (6) is threadedly connected inside the threaded hole. The pliers handle body (402) is slidably mounted on the upper surface of the support plate (2), so that the pliers handle body (402) and the support plate (2) are fixed to each other by the fixing bolt (6). The jaw (401) is slidably mounted on the upper surface of the pliers handle body (402), and the jaw (401) and the pliers handle body (402) are fixed to each other by the fixing bolt (6). The extended pliers plate (403) is movably mounted on one end of the jaw (401).

6. A positioning tool for a carbon fiber composite material shell according to claim 5, characterized in that: An extension screw (11) is fixedly mounted at the center of one side of the extension jaw (403) close to the jaw (401); a movable groove is provided at the center of one end of the jaw (401); and an adjustment groove is provided on the upper surface of the jaw (401); the adjustment groove and the movable groove are connected to each other; an extension knob (12) is rotatably connected inside the adjustment groove; the extension knob (12) is threadedly sleeved on the outside of the extension screw (11); and both ends of one side of the extension jaw (401) are slidably connected to one end of the jaw (401).

7. A positioning tool for a carbon fiber composite material shell according to claim 6, characterized in that: The lifting mechanism comprises a fine-tuning screw (105) and a threaded sleeve, wherein the lower end of the fine-tuning screw (105) is rotatably connected to a fixed base (107), and the fixed base (107) is fixedly mounted on one side of the support plate (2). A driving rod (106) is fixedly mounted on the lower end of the fine-tuning screw (105), and the upper end of the driving rod (106) passes through the bottom of the support plate (2). The threaded sleeve is threadedly mounted on the outer side of the fine-tuning screw (105), and the threaded sleeve consists of two groups of semi-threaded sleeves. (104), the upper ends of the two groups of semi-threaded sleeves (104) on the sides away from each other are fixedly mounted with a linked screw rod (102), the same end of the two groups of pads (108) are fixedly mounted with a positioning shell (101), one end of the linked screw rod (102) is slidably mounted inside the positioning shell (101), and one end of the positioning shell (101) is rotatably connected with a driving knob (103), and the driving knob (103) is threadedly sleeved on the outside of the linked screw rod (102).

8. The positioning tool for a carbon fiber composite material shell according to claim 7, characterized in that: The pre-positioning assembly (5) comprises a bearing plate (501) and an auxiliary support seat (502); an inclined surface is formed on one side of the bearing plate (501), and the inclined surface is arranged to fit the outer side of the shell (1); the auxiliary support seat (502) is fixedly mounted on one end of the upper surface of the bearing plate (501); a lifting seat (503) is slidably connected inside the lifting groove; the lifting seat (503) is rotatably connected to the bearing plate (501); a threaded groove is formed on the upper surface of the lifting seat (503); a fastening bolt (8) is threadedly connected inside the threaded groove; the bearing plate (501) is threadedly connected to the fastening bolt (8), so that the bearing plate (501) and the lifting seat (503) are fixed to each other through the fastening bolt (8).

9. A positioning tool for a carbon fiber composite material shell according to claim 8, characterized in that: The lifting assembly (9) comprises a lifting screw (901), a groove is provided at one side of the lifting groove, the lifting screw (901) is rotatably mounted in the groove, and an adjustment plate (902) is connected to the outside of the lifting screw (901) via a thread, the adjustment plate (902) is fixedly connected to the lifting seat (503), a connecting rod (903) is fixedly mounted on the upper end of the lifting screw (901), a transmission groove (7) is provided at one end of the upper surface of the support plate (2), and the interior of the transmission groove (7) is communicated with the interior of the groove, one end of the connecting rod (903) is transmission-connected to a linkage assembly (14), and the linkage assembly (14) is arranged in the transmission groove (7).

10. A positioning tool for a carbon fiber composite material shell according to claim 9, characterized in that: The linkage assembly (14) comprises two groups of first synchronous wheels (1405) and two groups of second synchronous wheels (1406), wherein a linkage rod (1401) is fixedly mounted on the upper surface of one group of the first synchronous wheels (1405), a square rod (13) is fixedly mounted on the upper end of the linkage rod (1401), a sliding groove is provided at the bottom of the fixing bolt (6), one end of the square rod (13) is slidably mounted inside the sliding groove, a synchronous belt (1410) is sleeved between the two groups of the first synchronous wheels (1405), a push sleeve (1402) is rotatably sleeved on the lower end of the outer side of one group of the first synchronous wheels (1405), a push rod (1403) is fixedly mounted on the outer side of the push sleeve (1402), one end of the push rod (1403) is rotatably connected to the upper surface of the other group of the first synchronous wheels (1405), and a push belt (1410) is sleeved between the two groups of the second synchronous wheels (1406). There is another group of synchronous belts (1410), wherein a synchronous rod (1409) is fixedly installed at the bottom of one group of second synchronous wheels (1406), and a driving gear (1407) is fixedly installed at the lower end of the synchronous rod (1409), and the driving gear (1407) is rotatably installed at the lower end of the transmission groove (7), and a driven gear (1408) is meshedly connected to one side of the driving gear (1407), and the driven gear (1408) is rotatably installed inside the transmission groove (7), and the bottom center of the driven gear (1408) is fixedly connected to the upper end of the connecting rod (903), and the centers of the other group of second synchronous wheels (1406) and the other group of first synchronous wheels (1405) are fixedly arranged with each other, and the bottom of the other group of second synchronous wheels (1406) is rotatably connected to a sliding rod (1404), and the sliding rod (1404) is slidably installed inside the transmission groove (7).

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