A face brushing machine for VVT sprocket

Abstract

The application discloses an end face brush burring machine for a VVT chain wheel and relates to the technical field of burring treatment. The end face brush burring machine for the VVT chain wheel comprises a machine body and a third assembly. The third assembly comprises a shaft piece A, the upper portion of the shaft piece A is attached with a shaft piece B on one side, and the shaft piece A and the shaft piece B are symmetrically provided with threaded grooves. Through cooperation of the second assembly and the third assembly, precise adaptation and reliable fixing of different specifications of VVT chain wheels can be effectively realized, poor adaptability caused by fixing of the auxiliary shaft column diameter in the prior art is effectively avoided, deviation and shaking of the workpiece during positioning and burring are effectively prevented, uniformity and precision of burring removal are stably ensured, and therefore, the machining quality of the VVT chain wheel is improved. Meanwhile, positioning rod classification collection, storage and use management problems caused by adaptation of different specifications of chain wheels are avoided, the operation failure rate and equipment debugging time are reduced, and single machining efficiency and overall production continuity are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of deburring technology, specifically to an end face deburring machine for VVT sprockets. Background Technology

[0002] In the deburring process of VVT sprocket end faces, the initial fixation and quality inspection of the workpiece are crucial prerequisites for ensuring processing efficiency and product quality. Current methods for deburring sprocket end faces typically involve connecting a sprocket with a through hole to an auxiliary shaft on the tooling table to initially fix the sprocket to the tooling table. Then, a positioning rod is manually inserted through a limiting hole in the workpiece (i.e., the sprocket) and subsequently inserted into the positioning hole on the brushing machine's tooling table to achieve workpiece positioning.

[0003] As a core transmission component of the engine's variable valve timing system, the VVT ​​sprocket needs to be adapted to the assembly requirements of different engine models. Therefore, in actual production, there are products of various specifications and sizes. However, the auxiliary shaft column on the tooling table of existing deburring machines, used to initially define the position of the workpiece, usually has a fixed shaft diameter, which cannot flexibly adapt to different specifications of VVT sprockets. The aforementioned fixed shaft diameter design results in extremely poor compatibility between the auxiliary shaft column and the workpiece. When dealing with workpieces of different sizes, either the shaft diameter and the inner diameter of the workpiece do not match, making it impossible to achieve effective initial fixation, causing the workpiece to easily shift and wobble during subsequent positioning and grinding, affecting the uniformity and accuracy of deburring; or the fit is too tight or too loose, increasing the difficulty of placing and removing the workpiece and reducing processing efficiency.

[0004] Meanwhile, during the manufacturing process of VVT sprockets, due to factors such as processing technology, there is an inevitable certain process deviation in their inner diameter. However, the existing technology only verifies whether the inner diameter meets the process requirements through sampling inspection. This inspection method is difficult to fully cover all workpieces, often resulting in unqualified products with inner diameter deviations flowing into the burr removal stage. If such unqualified products are directly treated as qualified products and flow into subsequent processes, it will not only affect the assembly accuracy of components such as VVT controllers, leading to abnormal valve timing adjustment in the finished engine, causing problems such as reduced power and increased fuel consumption, but also often aggravate wear during use due to improper structural fit, shortening the product's service life, and even causing safety hazards.

[0005] Furthermore, in existing technologies, the method of manually inserting the positioning rod through the limiting hole on the sprocket and then into the positioning hole on the tooling table of the deburring machine to fix the workpiece is not only labor-intensive and time-consuming, but also cumbersome. Additionally, the collection and storage of positioning rods is inconvenient because different sizes of VVT sprockets correspond to different thicknesses. In actual production, operators are prone to mistakenly using positioning rods that do not match the workpiece's through-hole due to negligence. This can cause significant workpiece movement during grinding, affecting the uniformity and accuracy of deburring, and can also lead to scratches or deformation of the workpiece's through-hole wall. It can even cause poor fit between the positioning rod and the tooling table's positioning hole, increasing workpiece rework rates and equipment setup time, thus negatively impacting overall production efficiency.

[0006] In summary, the existing technology has shortcomings in meeting the initial fixing requirements of VVT sprockets of different specifications. It also lacks the function of comprehensively detecting the inner diameter of the workpiece, making it difficult to adapt to the diversified needs and quality control requirements in actual production. Therefore, it is urgent to develop an integrated accessory with strong adaptability that can simultaneously detect whether the inner diameter of the workpiece meets the process requirements, so as to solve the shortcomings of the existing technology and ensure the processing quality and production efficiency of VVT sprockets.

[0007] Therefore, this invention proposes an end face deburring machine for VVT sprockets to solve the above problems. Summary of the Invention

[0008] In view of this, an end face brushing deburring machine for VVT sprockets is proposed to solve the problems existing in the prior art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: an end face brushing deburring machine for VVT sprockets, comprising: a machine body, and further comprising: a third component;

[0010] The third component includes a shaft A, and a shaft B is attached to one side of the upper part of the shaft A. Both shaft A and shaft B have symmetrically opened threaded grooves, and a screw is threadedly connected in the two threaded grooves. The shaft A and shaft B are spliced ​​together by the screw to form a shaft.

[0011] The shaft has equally spaced slots, and a connecting piece is slidably connected in the slot. An inner arc plate is fixedly connected to the arc surface of the connecting piece, and an outer arc plate is fixedly connected to the plane surface of the connecting piece.

[0012] A plunger is inserted into the shaft composed of shaft A and shaft B, and a magnet is fixedly connected to the bottom of the inner cavity of shaft A.

[0013] As an improvement, a first component is also included;

[0014] The first component includes a brush head that is snapped onto the body, a support plate is provided in the middle of the body, a display screen is provided on the support plate, and an air switch is fixedly connected to the side wall of the display screen;

[0015] The bottom of the machine body is provided with an orientation control group, which consists of a base and an angle control component, and a sprocket is provided on the orientation control group.

[0016] As an improvement, a second component is also included;

[0017] The second component includes a base disposed on top of the orientation control group, an air groove component fixedly connected inside the base, a sliding plate slidably connected inside the air groove component, and the air groove component and the sliding plate being connected by a spring.

[0018] A gas actuator is fixedly connected to the bottom of the gas groove component, and the gas actuator penetrates through the bottom of the base.

[0019] As an improvement, positioning rods are fixedly connected at equal intervals on the sliding plate, and a tooling table is threadedly connected to the base, with positioning holes being opened at equal intervals on the tooling table.

[0020] The sprocket has a through hole and equidistant limit holes.

[0021] The sprocket is placed on the tooling table.

[0022] As an improvement, a fourth component is also included;

[0023] The fourth component includes a sleeve A fixedly connected to the inner arc plate, a plug-in post A movably inserted into the sleeve A, and the end of the plug-in post A away from the sleeve A fixedly connected to the inner ring wall of the shaft A. The sleeve A and the plug-in post A form a guide group.

[0024] The connector has a through groove, and a sleeve B is fixedly connected to the inner ring wall of the groove. A plug-in post B is inserted into the sleeve B, and the other end of the plug-in post B is fixedly connected to the vertical wall of the groove. A strain gauge is fixedly connected to one end of the plug-in post B located in the inner cavity of the sleeve B.

[0025] As an improvement, the connecting member is a semi-circular body; the connecting member, the inner arc plate, and the outer arc plate together constitute an outer expansion group.

[0026] As an improvement, the plunger has a groove at its bottom that is compatible with a magnet, and a metal sheet is fixedly connected inside the groove.

[0027] As an improvement, the strain gauge is electrically connected to the display screen.

[0028] Compared with the prior art, the present invention provides an end face brushing deburring machine for VVT sprockets, which has the following beneficial effects:

[0029] 1. The present invention, through the cooperation of the second and third components, can bring the following advantages:

[0030] Significantly improved adaptability and guaranteed fixation stability: Through the auxiliary role of the second component in the third component, precise adaptation and reliable fixation of VVT sprockets of different specifications are achieved, effectively avoiding the poor adaptability problem caused by the fixed diameter of the auxiliary shaft column in the existing technology. It effectively prevents the workpiece from shifting or shaking during positioning and deburring, providing a stable guarantee for the uniformity and accuracy of burr removal, thereby improving the processing quality of VVT sprockets.

[0031] Simplify the operation process and improve production efficiency: The pneumatic moving and fixing method replaces the traditional manual insertion of positioning rods, making the operation steps simpler and significantly reducing manpower input and operation time; at the same time, it avoids the problems of classification, collection, storage and retrieval management of positioning rods caused by adapting to different specifications of sprockets, reduces the operation error rate and equipment debugging time, and significantly improves the efficiency of single processing and the continuity of overall production.

[0032] Reduce production costs and minimize resource waste: On the one hand, the pneumatic fixing method reduces reliance on manual labor and lowers labor costs; on the other hand, it avoids problems such as workpiece scratches, deformation, scrap, and damage to positioning rods caused by misuse of mismatched positioning rods, reducing workpiece rework rates and material consumption; at the same time, the adaptability design eliminates the need to separately configure multiple positioning rods and auxiliary shafts for different sprocket specifications, reducing the procurement, storage, and maintenance costs of production auxiliary equipment and achieving efficient resource utilization.

[0033] Adaptable to large-scale production and enhanced process flexibility: This design can flexibly adapt to the processing needs of various specifications of VVT sprockets without frequent changes of auxiliary tooling or adjustments to equipment parameters, meeting the diversified and batch processing needs in actual production; at the same time, the stable fixing effect and simple operation mode facilitate the connection with subsequent processing steps, providing support for the standardization and normalization of the production process, and enhancing the overall flexibility and adaptability of the production process.

[0034] 2. The present invention, by adopting a semi-circular design for the connecting parts, offers the following advantages:

[0035] Achieving buffer protection and reducing the risk of damage: The semi-circular structure has good elastic buffering characteristics. During the sprocket brushing burr processing, especially when the equipment experiences abnormal vibration, slight workpiece positioning deviation, or sudden uneven force, it can effectively absorb impact energy through the deformation and force dispersion of its own arc surface, avoiding rigid collision between the connecting parts and the sprocket, thereby avoiding damage to equipment components caused by hard impact. At the same time, it prevents the sprocket surface from being bumped, scratched, or deformed, ensuring the integrity of the equipment and workpiece.

[0036] Optimize force transmission and ensure processing accuracy: The semi-circular structure can guide the uniform transmission of force, avoiding the local stress concentration problem caused by traditional rigid connection structures. While providing buffer protection, it can maintain the positional stability of the workpiece during processing, ensuring the consistency of contact between the brush bristles and the sprocket end face during burr removal, thereby ensuring the uniformity and accuracy of burr removal and indirectly improving the product processing quality.

[0037] Reduce the impact of abnormal working conditions and improve production continuity: When a sudden abnormality occurs during the processing, the buffering effect of the semi-circular connecting parts can effectively alleviate the interference of the abnormality on the processing flow, avoid downtime maintenance caused by workpiece offset, equipment jamming and other problems, reduce the production interruption time caused by fault handling, ensure the continuity of overall production, and reduce the production losses caused by abnormal working conditions.

[0038] Extending component lifespan and reducing maintenance costs: The semi-circular structure reduces the wear rate of the connecting parts by dispersing impact force and reducing rigid friction. It also avoids damage such as component deformation and breakage caused by impact, thus extending the service life of the connecting parts and related equipment components. In addition, it reduces workpiece damage and equipment failure, reduces the frequency and cost of workpiece rework, component replacement and equipment maintenance, and further optimizes production economy.

[0039] 3. The design of the fourth component in this invention brings the following advantages:

[0040] Achieving full inspection coverage and preventing the flow of unqualified products: The fourth component completes the inner diameter inspection simultaneously after the sprocket is fixed, replacing the inspection mode that relies on sampling in the existing technology. It realizes the comprehensive inspection of the inner diameter of the through hole of each sprocket to be processed, avoiding the risk of unqualified products with inner diameter deviations due to sampling omissions flowing into the burr removal process and subsequent processes, and ensuring the dimensional accuracy and product qualification rate of VVT sprockets from the source.

[0041] The detection is accurate and reliable, and the judgment is intuitive and convenient: By using the detection method of strain gauge compression value feedback, combined with the pre-established standard value library corresponding to the inner diameter of the sprocket through hole of different specifications, the operator only needs to compare the real-time feedback value with the standard value on the display screen to quickly and accurately determine whether the sprocket through hole meets the process requirements. This avoids the subjective error and cumbersome operation of manual detection, reduces the dependence on the skill level of the operator, and improves the reliability of the detection results and the efficiency of judgment.

[0042] Pre-screening of defective products reduces production costs: By inspecting the inner diameter before brushing burrs, defective workpieces with poor inner diameter deviations can be screened out in advance. This avoids the waste of processing resources, equipment wear and tear and time occupation caused by such workpieces entering the subsequent grinding process. At the same time, it reduces the rework and scrap costs caused by improper subsequent assembly of defective workpieces, as well as the potential engine assembly failure losses, which significantly reduces the overall production cost.

[0043] 4. The present invention, by integrating the components into the same brush bristle process, offers the following advantages:

[0044] Highly integrated functions solve core pain points: The multi-specification adaptation and fixing function and the workpiece inner diameter detection function are integrated into the same brushing and burring process, breaking the limitations of the existing technology where fixing and detection are independent and have poor compatibility. It realizes an integrated processing flow of "adaptation and fixing - inner diameter detection - brushing and burring", which solves the core pain points of insufficient compatibility, incomplete detection coverage and scattered processes in the existing technology in one go, and greatly improves the integrity and practicality of the process.

[0045] Shorten processing cycle and improve production efficiency: The integrated design avoids the transfer, waiting and repositioning time of workpieces between processes such as fixing, inspection and grinding. There is no need to set up an additional independent inspection station or change the adaptable tooling, which significantly reduces the processing time of the entire workpiece. At the same time, the integrated process reduces redundant operations in process connection, improves the continuity of single processing, and provides efficiency guarantee for mass production.

[0046] Simplified equipment structure and reduced operating costs: The integrated design eliminates the need for separate equipment or complex auxiliary mechanisms for adaptation and detection functions, simplifying the overall structure of the brushing and deburring machine and reducing manufacturing costs and floor space. At the same time, the assembly design of shaft A and shaft B means that when subsequent parts wear out or fail, the entire equipment does not need to be disassembled. Only the corresponding shaft or related components need to be replaced, reducing maintenance difficulty, downtime and maintenance costs, and extending the overall service life of the equipment.

[0047] Improved ease of operation and reduced management difficulty: The integrated process reduces the number of operations such as process switching, equipment adjustment and workpiece transfer for operators, thereby reducing labor intensity and operational complexity; at the same time, the centralized functional design makes it easier for operators to uniformly manage the processing, fixing and testing status, reducing operational errors and quality control loopholes caused by the dispersion of processes, and helping to standardize the management of the production process. Attached Figure Description

[0048] Figure 1 This is a three-dimensional schematic diagram of the main structure of the present invention;

[0049] Figure 2 This is a process diagram of installing the brush bristle pre-device in this invention;

[0050] Figure 3 This is a three-dimensional schematic diagram showing the completed installation of the brush bristle pre-device in this invention.

[0051] Figure 4 This is a top view of the brush bristle pre-installation device in this invention after installation.

[0052] Figure 5 This is a side view of the base and tooling table after being cut apart in this invention;

[0053] Figure 6 For the present invention Figure 5 Enlarged view of the structure at point A in the middle;

[0054] Figure 7 This is a diagram showing the working state of the second component in this invention;

[0055] Figure 8 This is a diagram illustrating the installation process of shaft A and shaft B in this invention.

[0056] Figure 9 This is a structural diagram of the fourth component in this invention.

[0057] In the picture:

[0058] 1. Body; First Component: 201. Brush Head; 202. Support Plate; 203. Display Screen; 204. Air Switch; 205. Orientation Control Group; 206. Sprocket;

[0059] Second component: 301, base; 302, gas groove component; 303, sliding plate; 304, gas actuator; 305, positioning rod; 306, tooling table; 307, positioning hole; 308, through hole; 309, limiting hole;

[0060] Third component: 401, Shaft A; 402, Shaft B; 403, Screw; 404, Slot; 405, Connector; 406, Inner Arc Plate; 407, Outer Arc Plate; 408, Plunger; 409, Magnet;

[0061] Fourth component: 501, Sleeve A; 502, Insertion post A; 503, Sleeve B; 504, Insertion post B; 505, Strain gauge. Detailed Implementation

[0062] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0063] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0064] Example

[0065] Please refer to Figures 1 to 6 , Figure 8 , Figure 9 As shown:

[0066] To address the problems mentioned in the technical solutions, this application provides an end face brushing deburring machine for VVT sprockets, comprising: a machine body 1, and further comprising: a third component;

[0067] The third component includes shaft A401, and shaft B402 is attached to one side of the upper part of shaft A401. Shaft A401 and shaft B402 are symmetrically provided with threaded grooves. A screw 403 is threadedly connected in both threaded grooves. Shaft A401 and shaft B402 are spliced ​​together by screw 403 to form a shaft.

[0068] The shaft has equally spaced slots 404, and a connector 405 is slidably connected inside the slots 404. An inner arc plate 406 is fixedly connected to the arc surface of the connector 405, and an outer arc plate 407 is fixedly connected to the flat surface of the connector 405. A plunger 408 is inserted into the shaft composed of shaft A401 and shaft B402, and a magnet 409 is fixedly connected to the bottom of the inner cavity of shaft A401.

[0069] in:

[0070] The third component can be adapted to the inner diameter of the through hole 308 of different sprockets 206, thereby achieving the compatibility and fixation of sprockets 206 of different specifications, avoiding the compatibility drawbacks of existing technologies, making it less likely for sprockets 206 to shift or wobble during subsequent positioning and grinding, effectively improving the uniformity and accuracy of burr removal; reducing the difficulty of operation and improving processing efficiency.

[0071] Shaft A401 and shaft B402 are joined together by screw 403 to form a shaft.

[0072] The strip groove 404 is used as a guide and limiting groove for the connecting part 405.

[0073] The connector 405 is a semi-circular body, which can provide buffer protection for the sprocket 206 when it is being ground, especially in abnormal situations, to avoid damage to the equipment and workpiece.

[0074] Connector 405, inner arc plate 406, and outer arc plate 407 together constitute an outer expansion assembly;

[0075] The plunger 408 can be adapted to different sizes of sprockets 206.

[0076] The plunger 408 has a groove at its bottom, which is compatible with the magnet 409. A metal sheet is fixedly connected in the groove. When the plunger 408 is inserted into the inner cavity of the shaft column, the magnet 409 will magnetically attract and fix the plunger 408 through the metal sheet. This ensures that the outward expansion group pushed by the plunger 408 can stably fit against the inner wall of the through hole 308 of the sprocket 206, thereby fixing the sprocket 206 and ensuring the stability of the brush burr operation.

[0077] A further embodiment: Please refer to Figure 2 , Figure 4 , Figure 5 , Figure 7 , Figure 8 As shown:

[0078] The first component includes a brush head 201 snapped onto the body 1, a support plate 202 in the middle of the body 1, a display screen 203 on the support plate 202, and an air switch 204 fixedly connected to the side wall of the display screen 203; an orientation control group 205 is provided at the bottom of the body 1, the orientation control group 205 consists of a base and an angle control component, and a sprocket 206 is provided on the orientation control group 205.

[0079] It also includes a second component; the second component includes a base 301 set on the top of the orientation control group 205, an air groove 302 fixedly connected in the base 301, a sliding plate 303 slidably connected in the air groove 302, and the air groove 302 and the sliding plate 303 are connected by a spring; a gas actuator 304 is fixedly connected to the bottom of the air groove 302, the gas actuator 304 passes through the bottom of the base 301, positioning rods 305 are fixedly connected at equal intervals on the sliding plate 303, a tooling table 306 is threadedly connected to the base 301, positioning holes 307 are equidistantly opened through the tooling table 306; a through hole 308 is opened through the sprocket 206, and a limit hole 309 is equidistantly opened through the sprocket 206; the sprocket 206 is placed on the tooling table 306.

[0080] in:

[0081] First, turn on the equipment and flip the air switch 204 next to the display screen 203 downwards. Then check if the time on the display screen 203 is correct. This step requires careful attention to the time parameters needed after powering on to ensure normal operation and precise control of the brush head 201's brushing duration. Next, perform a material loading inspection. Visually inspect each end face of the sprocket 206 for any bumps or scratches, and keep the tooling table 306 clean before installing the sprocket 206. The key point is to align the angular limiting hole 309 of the sprocket 206 with the positioning hole 307 on the tooling table 306, ensuring there are no foreign objects on the tooling table 306 to prevent scratches, ineffective brushing action, and damage to the product caused by foreign objects. Then, start the equipment to perform the brushing operation. After completion, perform a material unloading inspection. According to the appearance inspection guide or defect comparison diagram, conduct a comprehensive visual inspection of each end face and axial surface of the product. After confirming there are no bumps or scratches, pack the product and finally shut down the machine.

[0082] The brush head 201, which is snapped onto the body 1, can be replaced and adjusted according to the usage cycle or the precision requirements of the brush bristles.

[0083] The orientation control unit 205 consists of a base and an angle control component, and is used to control the orientation angle of the sprocket 206 toward the brush head 201.

[0084] The second component assists the third component in achieving the compatibility and fixation of sprockets 206 of different specifications, avoiding the compatibility drawbacks of existing technologies. At the same time, its pneumatic fixing method differs from existing technologies in that it does not require much manpower and time, and the overall process is simpler. It also avoids the inconvenience of collecting and storing the positioning rods 305 for the installation of sprockets 206 of different specifications.

[0085] The slide plate 303 is slidably adapted to the air groove 302; the shape of the air groove 302 and the slide plate 303 changes with the position of the upper limit hole 309 of the sprocket 206; for example, in particular, if the line connecting several limit holes 309 is not a circle, then the air groove 302 implemented in this design is circular and the slide plate 303 should also be selected accordingly.

[0086] The gas actuator 304 can be implemented as a connecting pipe / miniature air pump. When implemented as a connecting pipe, it can be connected to an external air pump through the air pipe. When implemented as a miniature air pump, the miniature air pump is electrically connected to the display screen 203 and is controlled by it. Both of the above can realize the control of the amount of gas in the gas tank 302. In this design, it is implemented as a miniature air pump.

[0087] The positioning rod 305 is inserted into the positioning hole 307.

[0088] During operation, sprocket 206 is placed on a clean tooling table 306.

[0089] Depending on the shape / size of the workpiece to be processed, a tooling table 306 with different numbers / positions of positioning holes 307 and a slide plate 303 with different numbers / positions of positioning rods 305 can be selected.

[0090] The through hole 308 is used in conjunction with the shaft composed of shaft A401 and shaft B402 for the initial fixation of the sprocket 206 on the tooling table 306.

[0091] The general process of deburring the end face of sprocket 206 is as follows: sprocket 206 with through hole 308 is sleeved with auxiliary shaft on tooling table 306, and the sprocket 206 is initially fixed to tooling table 306 by the external expansion of the third component; then the positioning rod 305 is inserted through the limiting hole 309 on sprocket 206, and then inserted into the positioning hole 307 on tooling table 306, thereby realizing the positioning of the workpiece, i.e., sprocket 206.

[0092] A further embodiment: Please refer to Figure 6 , Figure 8 , Figure 9 As shown:

[0093] The fourth component includes a sleeve A501 fixedly connected to the inner arc plate 406, a plug-in post A502 movably inserted into the sleeve A501, and one end of the plug-in post A502 away from the sleeve A501 fixedly connected to the inner annular wall of the shaft A401. The sleeve A501 and the plug-in post A502 form a guide group. A through groove is provided on the connecting member 405. A sleeve B503 is fixedly connected to the inner annular wall of the through groove. A plug-in post B504 is inserted into the sleeve B503. The other end of the plug-in post B504 is fixedly connected to the vertical wall of the through groove. A strain gauge 505 is fixedly connected to one end of the plug-in post B504 located in the inner cavity of the sleeve B503.

[0094] in:

[0095] The fourth component is used to inspect the inner diameter of the sprocket 206, i.e. the diameter of the through hole 308, after the second and third components have fixed the sprocket 206. This is to avoid the situation where the inner diameter of the sprocket 206 is unqualified due to the existing sampling inspection method, but still flows into the burr removal process.

[0096] Sleeve A501 and plug-in post A502 form a guide group, which is used to assist the strip groove 404 in guiding and limiting the connector 405 and the overall expansion group, ensuring the stability of the numerical feedback of the subsequent strain gauge 505.

[0097] There is an electrical connection between the strain gauge 505 and the display screen 203.

[0098] When the expansion assembly consisting of connector 405, inner arc plate 406, and outer arc plate 407 is pushed outward by plunger 408 to adapt to and fit the wall of through hole 308 of sprocket 206, the pressure value of strain gauge 505 is a fixed value. The operator can indirectly judge whether the through hole 308 of sprocket 206 meets the process requirements or has any defects by the value fed back on display screen 203 (before the sprocket 206 workpiece is deburred, the feedback values ​​of strain gauge 505 corresponding to the inner diameter of through hole 308 of sprocket 206 of different specifications have been established, and the operator only needs to compare them).

[0099] The working process of all the content in the above embodiments is as follows:

[0100] Phase 1: Power-on Preparation Phase

[0101] First, start the machine body 1 and flip the air switch 204 on the side wall of the display screen 203 downwards to check whether the time parameters displayed on the display screen 203 are accurate, ensuring that the equipment can accurately control the processing time. At the same time, perform a pre-loading inspection: visually confirm that there are no defects such as bumps or scratches on each end face of the sprocket 206, clean the tooling table 306, and ensure that its surface is free of foreign objects to avoid product scratches or ineffective brushing during subsequent processing.

[0102] Phase Two: Material Feeding and Initial Fixing

[0103] First, assemble the third component: Fit shaft A401 and shaft B402 together, and screw in screws 403 through their symmetrically threaded grooves to form a complete shaft. Place sprocket 206 on the tooling table 306, allowing the shaft to pass through the through hole 308 of sprocket 206. Based on the specifications of the sprocket 206 to be processed, select a suitable plunger 408 and insert it into the shaft's inner cavity. The magnet 409 at the bottom of the inner cavity of shaft A401 is magnetically attracted and fixed by the metal sheet in the groove of plunger 408, ensuring the plunger 408 stably pushes the expansion assembly. Under the thrust of the plunger 408, the expansion assembly slides along the strip groove 404, eventually fitting against the inner wall of the through hole 308, completing the initial fixation of sprocket 206. During this process, ensure that the limiting hole 309 on sprocket 206 is aligned with the positioning hole 307 on tooling table 306.

[0104] Phase Three: Precise Positioning Phase

[0105] The second component's gas actuator 304 is activated. The gas actuator 304, i.e., the air pump, supplies air into the air groove 302, pushing the slide plate 303 inside the air groove 302 to slide upward. The positioning rod 305 fixed on the slide plate 303 moves upward synchronously, passes through the limiting hole 309 of the sprocket 206, and inserts into the positioning hole 307 of the tooling table 306, achieving precise positioning of the sprocket 206. The spring between the air groove 302 and the slide plate 303 is in a stretched state, preparing for subsequent reset.

[0106] Phase Four: Inner Diameter Inspection Phase

[0107] While the third component is initially fixed, the fourth component simultaneously performs inner diameter testing. When the outer expansion assembly fits against the inner wall of the through hole 308, the connector 405 drives the sleeve B503 and the plug-in post B504 to move relative to each other. The strain gauge 505 at the end of the plug-in post B504 is compressed and generates an electrical signal, which is transmitted to the display screen 203 through an electrical connection. The operator compares the real-time value displayed on the display screen 203 with the preset standard values ​​for the inner diameter of the through hole 308 of different specification sprockets 206 to determine whether the inner diameter of the sprocket 206 meets the process requirements. If it does not meet the requirements, the sprocket 206 is removed directly. If it meets the requirements, the deburring process begins. During this process, the sleeve A501 and the plug-in post A502 form a guide group auxiliary strip groove 404, which provides limiting guidance for the sliding of the connector 405 and ensures the accuracy of the test.

[0108] Phase 5: Brush Burr Processing Phase

[0109] The position and angle of the sprocket 206 are adjusted by the base and angle adjustment components of the orientation control group 205, so that the end face of the sprocket 206 is precisely aligned with the brush head 201 that is snapped onto the machine body 1. After confirming or adjusting the processing time parameters on the display screen 203 according to the processing requirements, the brush head 201 starts to perform deburring operation on the end face of the sprocket 206. During the processing, the fixing structure of the second and third components works together to prevent the sprocket 206 from shifting or shaking, ensuring the uniformity and accuracy of deburring.

[0110] Phase Six: Material Preparation and Finished Product Inspection

[0111] After the deburring operation is completed, the gas actuator 304 is depressurized, and the slide plate 303 slides downward under the restoring force of the spring. The positioning rod 305 exits from the positioning hole 307 and the limiting hole 309. Then, the plunger 408 is removed, and the outer expansion assembly returns to its original position after losing thrust, disengaging from the inner wall of the through hole 308 of the sprocket 206. The operator then removes the sprocket 206. According to the appearance inspection standards, a comprehensive visual inspection of all end faces and shaft faces of the sprocket 206 is conducted. After confirming that there are no problems such as bumps, scratches, or burr residue, the qualified products are packed into boxes. Finally, the power to the equipment is turned off, completing the entire processing flow.

[0112] Please refer to the above work process. Figures 1 to 9 .

[0113] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0114] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A face brushing and deburring machine for VVT sprockets, comprising: The body (1) is characterized in that it further includes: a third component; The third component includes a shaft A (401), and a shaft B (402) is attached to one side of the upper part of the shaft A (401). Both the shaft A (401) and the shaft B (402) are symmetrically provided with threaded grooves, and a screw (403) is threadedly connected in the two threaded grooves. The shaft A (401) and the shaft B (402) are spliced ​​together by the screw (403) to form a shaft rod. The shaft is provided with equally spaced strip grooves (404), and a connector (405) is slidably connected in the strip grooves (404). An inner arc plate (406) is fixedly connected to the arc surface of the connector (405), and an outer arc plate (407) is fixedly connected to the plane of the connector (405). A plunger (408) is inserted into the shaft composed of shaft A (401) and shaft B (402), and a magnet (409) is fixedly connected to the bottom of the inner cavity of shaft A (401). It also includes a second component; The second component includes a base (301) disposed on top of the orientation control group (205), an air groove component (302) is fixedly connected in the base (301), a slide plate (303) is slidably connected in the air groove component (302), and the air groove component (302) and the slide plate (303) are connected by a spring. The bottom of the gas groove component (302) is fixedly connected to a gas actuator (304), and the gas actuator (304) penetrates the bottom of the base (301); Positioning rods (305) are fixedly connected at equal intervals on the sliding plate (303), and a tooling table (306) is threadedly connected to the base (301). Positioning holes (307) are opened at equal intervals on the tooling table (306). It also includes a through hole (308) and a limiting hole (309); It also includes a fourth component; The fourth component includes a sleeve A (501) fixedly connected to the inner arc plate (406), and a plug-in post A (502) is movably inserted into the sleeve A (501). The end of the plug-in post A (502) away from the sleeve A (501) is fixedly connected to the inner ring wall of the shaft A (401). The sleeve A (501) and the plug-in post A (502) form a guide group. The connector (405) has a through groove, and a sleeve B (503) is fixedly connected to the inner ring wall of the through groove. A plug-in post B (504) is inserted into the sleeve B (503), and the other end of the plug-in post B (504) is fixedly connected to the vertical wall of the through groove. A strain gauge (505) is fixedly connected to one end of the plug-in post B (504) located in the inner cavity of the sleeve B (503).

2. The end face brushing deburring machine for VVT sprockets according to claim 1, characterized in that: It also includes the first component; The first component includes a brush head (201) snapped onto the body (1), a support plate (202) is provided in the middle of the body (1), a display screen (203) is provided on the support plate (202), and an air switch (204) is fixedly connected to the side wall of the display screen (203). The bottom of the body (1) is provided with an orientation control group (205), which consists of a base and an angle control component, and a sprocket (206) is provided on the orientation control group (205). The through hole (308) is formed through the sprocket (206), and the limiting hole (309) is formed through the sprocket (206) at equal intervals; The sprocket (206) is placed on the tooling table (306).

3. The end face brushing and deburring machine for VVT sprockets according to claim 1, characterized in that: The connector (405) is a semi-arc; the connector (405), the inner arc plate (406), and the outer arc plate (407) together form an outer expansion group.

4. The end face brushing deburring machine for VVT sprockets according to claim 1, characterized in that: The plunger (408) has a groove at its bottom, which is compatible with the magnet (409), and a metal sheet is fixedly connected inside the groove.

5. A face brushing and deburring machine for VVT sprockets according to claim 2, characterized in that: There is an electrical connection between the strain gauge (505) and the display screen (203).

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