Thin-wall inner hole part marking mechanism and method

Abstract

The thin-wall inner hole part marking mechanism comprises a supporting platform, a marking device is arranged at one end of the top of the supporting platform, a fastening device is arranged at the other end of the top of the supporting platform, and a gas conveying device is connected to the marking device; the marking device comprises a stand column, a guide assembly is arranged on the stand column, and a marking unit is slidably connected to the guide assembly. The fastening device comprises an angle adjusting assembly, the top of the angle adjusting assembly is connected with a fastening assembly, and the fastening assembly is used for fastening the thin-wall inner hole part; when the thin-wall inner hole part is marked, the included angle between the marking unit and the fastening assembly is an obtuse angle. The marking device, the fastening device and the gas transmission device are cooperatively matched, so that automatic marking operation of the thin-wall inner hole part is achieved, the marking efficiency is improved, meanwhile, the problem of deformation of the thin-wall inner hole part is avoided, accurate and standard marking of the designated position of the thin-wall inner hole part is achieved, and the problem of deformation of the thin-wall part in the marking process is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of marking thin-walled inner hole parts, and in particular relates to a marking mechanism and a method for thin-walled inner hole parts. Background Art

[0002] In the field of industrial manufacturing, marking the inner hole of thin-walled tube products is a crucial process, especially in the production of precision mechanical parts such as plungers in the plunger pump of the aircraft engine fuel control system, where key information such as production number, production date, brand logo, etc. need to be accurately marked on the inner hole wall. However, due to their unique structural characteristics, such thin-walled tube parts pose extremely high challenges to the marking process.

[0003] The wall thickness of tubular thin-walled parts is extremely thin, ranging from 1 to 2.25 mm. This design is easily affected by cutting force and clamping force during processing and deforms. It puts forward strict requirements on the marking process (including marking method, clamping method and selection of marking parameters) and subsequent processing. Dimensional accuracy and structural strength must be ensured to avoid deformation affecting product function.

[0004] like Figure 7 As shown in the figure, the marking needs to be carried out within a specific range of 9.5mm in length inside the orifice, and the entrance to this area has a 15° cone angle. This requires that the marking process must be precisely positioned to meet the needs of product identification and specification marking, while not affecting the performance of the orifice and internal structure.

[0005] In addition, the cylindricity requirement for the outer cylindrical surface of thin-walled inner hole parts is as high as 0.002mm. This is a strict control of the shape accuracy of the cylindrical surface, which needs to be guaranteed by precision grinding and other processes, and tested with high-precision measuring equipment to ensure the matching accuracy with other components and meet high-end assembly requirements. Therefore, in the process of marking, laser ablation technology is prohibited. Laser marking may produce a laser remelting layer, destroy the material structure, and affect product performance and quality. Therefore, it is strictly forbidden to use laser ablation technology for marking.

[0006] Currently, for Figure 7In the marking operation of the inner hole of the tubular thin-walled parts, the existing technology mainly adopts the pneumatic engraving pen technology for operation. This technology is based on the power transmission of compressed air. By controlling the air pressure and vibration frequency, it can achieve the surface marking of parts with different strengths and effects. However, the existing pneumatic engraving pen has exposed many shortcomings in practical applications. First, it is difficult to accurately guarantee the 15° operation angle requirement by manual operation, resulting in a deviation between the marking angle and the design requirements, affecting the consistency and aesthetics of the product. Secondly, it is difficult to ensure that the marking position is within the specific range of 9.5mm by manual operation. The strength and habit differences of different operators lead to the upper and lower deviations of the marking position, affecting the standardization of the product. In addition, the manual marking process is slow, especially in mass production, which significantly reduces production efficiency. Long-term manual operation can easily make the operator tired, affect the marking quality and consistency, and further reduce production efficiency. In addition, it is difficult to control the strength of manual marking evenly, resulting in different depths of marking, inconsistent clarity, and irregular handwriting strokes, which affects the appearance of the product and subsequent identification and traceability, and seriously affects quality control and standardized production. Summary of the invention

[0007] The purpose of the present invention is to provide a thin-walled inner hole part marking mechanism and method, so as to solve the technical defects in the prior art that it is difficult to mark the inner wall of the thin-walled inner hole part, it is impossible to achieve accurate and standardized marking of the specified position, the thin-walled part is easily deformed during the marking process, and the clarity of the mark is impaired.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions: In a first aspect, a thin-walled inner hole part marking mechanism is provided, comprising: A supporting platform, with a marking device at one end of the top and a fastening device at the other end, wherein the marking device is connected to a gas delivery device; The marking device comprises a column, a guide assembly is provided on the column, and a marking unit is slidably connected to the guide assembly; The fastening device comprises an angle adjustment component, the top of which is connected with a fastening component, and the fastening component is used to fasten the thin-walled inner hole parts; Wherein, when marking the thin-walled inner hole part, the angle between the marking unit and the fastening component is an obtuse angle.

[0009] Furthermore, the angle adjustment assembly comprises a bottom plate, one end of the bottom plate is provided with a support plate, and the other end of the bottom plate is provided with an adjustment plate; One end of the fastening assembly is rotatably connected to the top of the support plate, and the other end is matched with the adjustment plate.

[0010] Furthermore, the adjustment plate is axially perpendicular to the bottom plate and the support plate, and an adjustment hole is provided on the adjustment plate; The fastening assembly comprises a mounting plate, a connecting plate is provided at the bottom of the mounting plate, a sliding groove is provided on the connecting plate, and the sliding groove is connected to the adjusting hole via a positioning piece.

[0011] Furthermore, one end of the positioning member passes through the slide slot and is connected to the adjustment hole, and the other end abuts against the connecting plate.

[0012] Furthermore, the adjustment holes are provided in two groups, and the arrangement shapes of the two groups of adjustment holes are both arc-shaped; The slide groove includes a first slide groove and a second slide groove, the first slide groove corresponds to one group of adjustment holes, and the second slide groove corresponds to the other group of adjustment holes.

[0013] Furthermore, the positioning member is threadedly connected to the adjustment hole.

[0014] Furthermore, the positioning member is a bolt.

[0015] Furthermore, a three-jaw chuck is provided on the top of the mounting plate, and a clamping plate is provided on the three-jaw chuck; The clamping plates are arranged in three circles, and the angles between the three clamping plates are the same; Wherein, the splint is made of elastic material.

[0016] Furthermore, a lifting unit is slidably connected to the guide assembly, a guide rod is provided at the bottom of the lifting unit, and the marking unit is installed at the bottom of the guide rod; The marking unit comprises a fixed plate and a marking head, wherein the marking head is obliquely arranged at the end of the fixed plate; A rotating unit is arranged on the top of the fixing plate, and the top of the rotating unit is connected to the bottom of the guide rod.

[0017] In a second aspect, a method for marking thin-walled inner hole parts is provided, wherein the method is performed using the thin-walled inner hole parts marking mechanism as described above, and comprises: According to the wall thickness of thin-walled inner hole parts, the operating parameters are preset through the control device; The thin-walled inner hole part is fixed on the fastening device, and based on the preset operating parameters, the operating angle of the fastening device is adjusted so that the angle between the fastening device and the marking device is an obtuse angle.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The marking device, fastening device, and gas transmission device cooperate with each other to achieve the automated operation of marking thin-walled inner hole parts. While improving the marking efficiency, it avoids the problem of deformation of thin-walled inner hole parts. Secondly, through the adjustment of the guiding component and the angle adjustment component, the working end of the marking head can be accurately located in the area to be marked on the thin-walled inner hole part, and the marking angle can meet the marking requirements, realizing accurate and standardized marking at the specified position of the thin-walled inner hole part, avoiding the problem of deformation of the thin-walled part during the marking process, eliminating the limitation of the inner wall inclination angle on the marking operation of the thin-walled inner hole part, and further improving the accuracy and clarity of marking the thin-walled inner hole part.

[0019] 2. The bottom plate in the angle adjustment component serves as the basis of the entire component. One end is provided with a support plate, and the other end is provided with an adjustment plate, enabling the fastening component to rotate around the top of the support plate and realizing precise angle adjustment through cooperation with the adjustment plate, so that the marking mechanism can adapt to the marking operations of thin-walled inner hole parts with different angle and wall thickness requirements, improving the versatility and adaptability of the equipment.

[0020] 3. By adjusting the position of the positioning part in the adjustment hole, fine adjustment of the angle of the fastening component can be achieved, further improving the accuracy of angle adjustment.

[0021] 4. The other end of the positioning part abuts against the connecting plate, which not only provides stable support for the fastening component but also prevents the fastening component from shifting due to vibration or external force during the marking process, ensuring the accuracy and stability of marking.

[0022] 5. There are two groups of adjustment holes, and the arrangement shapes are both arc-shaped, significantly expanding the adjustment range of the fastening component on the adjustment plate, thus meeting the marking requirements of more different angles.

[0023] 6. Screwing not only provides precise positioning ability but also ensures the firm fixation of the positioning part in the adjustment hole. Once the positioning part is tightened, it can be stably maintained at the required position, preventing displacement due to vibration or external force during the marking process, ensuring the accuracy and stability of marking.

[0024] 7. After the bolt is tightened, it can provide a strong clamping force to firmly fix the fastening component on the adjustment plate. This firm fixing effect helps to reduce vibration and displacement during the marking process, improving the accuracy and stability of marking. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A schematic diagram of the operation of the marking mechanism for thin-walled inner hole parts provided by the present invention; Figure 2 The overall schematic diagram of the thin-walled inner hole parts marking mechanism provided by the present invention; Figure 3 A schematic diagram of a fastening device in a marking mechanism for thin-walled inner hole parts provided by the present invention; Figure 4 A side view of a fastening device in a marking mechanism for thin-walled inner hole parts provided by the present invention; Figure 5 A schematic diagram of the clamping of the fastening device in the marking mechanism for thin-walled inner hole parts provided by the present invention; Figure 6 A schematic diagram of a marking head in a marking mechanism for thin-walled inner hole parts provided by the present invention; Figure 7 It is a schematic diagram of a thin-walled inner hole part; Figure 8 It is a schematic diagram of the structure of a three-jaw chuck; Fig. 9 A flow chart of the marking method for thin-walled inner hole parts provided by the present invention; Among them: 1. Support platform; 2. Angle adjustment component; 201. Bottom plate; 202. Support plate; 203. Adjustment plate; 2031. Positioning piece; 2032. Adjustment hole; 3. Fastening component; 301. Mounting plate; 302. Three-jaw chuck; 3021. Chuck body; 3022. Small bevel gear; 3023. Large bevel gear; 3024. Wrench insertion hole; 303. Clamp; 304. Connecting plate; 3041. First slide slot; 3042. Second slide slot; 4. Pipeline; 5. Control panel; 6. Start switch; 7. Adjustment button; 8. Marking device; 801. Column; 802. Guide rail; 803. Lifting unit; 804. Mounting block; 805. Guide rod; 806. Marking unit; 8061. Fixing plate; 8062. Marking head; 9. Gas transmission device; 10. Thin-walled inner hole parts; 11. Controller. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention generally described and illustrated in the drawings herein can be arranged and designed in a variety of different configurations.

[0028] Therefore, the detailed description of the embodiments of the present invention provided in the drawings below is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0029] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0030] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "horizontal", "inner", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0031] In addition, if the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but it can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined.

[0032] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In this embodiment, the thin-walled inner-hole part 10 is taken as an example of the plunger in an aviation plunger pump for illustration: In a first aspect, an embodiment of the present invention provides a marking mechanism for thin-walled inner hole parts, as Figure 1-6 shown, which includes a support platform 1, at one end of the top of which there is a marking device 8, and at the other end there is a fastening device, and an air supply device 9 is connected to the marking device 8; the marking device 8 includes a column 801, on which there is a guiding component, and a marking unit 806 is slidably connected to the guiding component; the fastening device includes an angle adjusting component 2, and a fastening component 3 is connected to the top of the angle adjusting component 2, and the fastening component 3 is used to fasten the thin-walled inner hole part 10; wherein, when marking the thin-walled inner hole part 10, the included angle between the marking unit 806 and the fastening component 3 is an obtuse angle.

[0034] In the above structure, the support platform 1 integrates the marking device 8 and the fastening device, making the entire marking mechanism more compact and efficient, reducing the floor area of the equipment, and improving the space utilization rate; secondly, the marking device 8 and the fastening device are respectively located at both ends of the support platform 1, with clear functional partitions, which is convenient for operation and maintenance; at the same time, the connection of the air supply device 9 to the marking device 8 provides the necessary air source support for the marking process. Meanwhile, the guiding component on the column 801 provides an accurate sliding direction for the marking unit 806, ensuring the accuracy and stability of the marking unit 806 during movement, helping to reduce errors in the marking operation process, and improving the marking quality.

[0035] In addition, the angle adjusting component 2 enables the fastening component 3 to adjust the angle as needed to achieve precise adjustment of the marking angle of the thin-walled inner hole part 10. This flexibility helps to adapt to the marking requirements of the marking angles of thin-walled inner hole parts 10 with different wall thicknesses, improving the versatility and adaptability of marking. The fastening component 3 is used to fasten the thin-walled inner hole part 10, ensuring the stability and accuracy of the part during the marking process, and avoiding damage to the thin-walled inner hole part 10 while ensuring the fastening effect.

[0036] It can be seen from the figure that during the marking operation of the thin-walled inner hole part 10, the included angle between the marking unit 806 and the fastening component 3 is an obtuse angle, and the end of the marking unit 806 is just located on the conical surface of the inner hole of the thin-walled inner hole part 10, which not only satisfies the accurate and standard marking of the thin-walled inner hole part 10, but also avoids the problem that the thin-walled inner hole part 10 is prone to deformation during the marking process. The marked mark is clearly visible after marking, improving the accessibility and flexibility of marking.

[0037] Furthermore, as can be seen from the figure, the angle adjustment assembly 2 includes a bottom plate 201. One end of the bottom plate 201 is provided with a support plate 202, and the other end is provided with an adjustment plate 203. One end of the fastening assembly 3 is rotatably connected to the top of the support plate 202, and the other end is engaged with the adjustment plate 203. Specifically, a groove is formed in the support plate 202, and rotation holes are formed on opposite sides of the groove. One end of the fastening assembly 3 connected to the support plate 202 is provided with a rotating shaft, and the rotating shaft is rotatably connected in the rotation holes. The other end of the fastening assembly 3 is rotatably engaged with the adjustment plate 203. During the angle adjustment process, one end of the fastening assembly 3 rotates around the support plate 202 as the rotation center, and the end of the fastening assembly 3 engaged with the adjustment plate 203 rotates towards the end away from the bottom plate 201. As the rotation amplitude of the fastening assembly 3 increases, the included angle between the end of the fastening assembly 3 engaged with the adjustment plate 203 and the bottom plate 201 also increases.

[0038] Furthermore, the adjustment plate 203 is axially perpendicular to the bottom plate 201 and the support plate 202, ensuring the stability and accuracy of the adjustment plate 203 during the adjustment process. This perpendicular relationship enables the adjustment plate 203 to maintain its original position and direction when subjected to external forces, and is not prone to deviation or shaking, thus ensuring the accuracy of angle adjustment. An adjustment hole 2032 is formed in the adjustment plate 203. The fastening assembly 3 includes a mounting plate 301. A connecting plate 304 is provided at the bottom of the mounting plate 301. A sliding groove is formed in the connecting plate 304, and the sliding groove is connected to the adjustment hole 2032 through a positioning member 2031, enabling the fastening assembly 3 to perform precise sliding and positioning on the adjustment plate 203. By adjusting the position of the positioning member 2031 in the adjustment hole 2032, fine adjustment of the angle of the fastening assembly 3 can be achieved, further improving the accuracy of angle adjustment.

[0039] In addition, since the fastening assembly 3 is connected to the adjustment plate 203 through the cooperation of the adjustment hole 2032 and the sliding groove, the fastening assembly 3 can be flexibly adjusted according to different thin-walled inner hole parts 10 or marking requirements, which helps to expand the application range of the marking mechanism and improve its market competitiveness. The cooperation design of the adjustment hole 2032 and the sliding groove enables the operator to easily adjust the angle and position of the fastening assembly 3 without complex tools or skills, reducing the labor intensity of the operator and improving work efficiency. When the fastening assembly 3 or the adjustment plate 203 fails or wears, the operator can quickly disassemble it for repair or replacement, reducing the maintenance cost and time of the equipment and improving the reliability and service life of the equipment.

[0040] In addition, the fastening assembly 3 is engaged with the adjustment holes 2032 on the adjustment plate 203 through the sliding grooves on the connecting plate 304 and fixed by the positioning members 2031, so that the fastening assembly 3 can maintain a stable structure and force when fastening the thin-walled inner hole part 10, reducing problems such as part loosening or inaccurate marking caused by insufficient fastening, and improving the overall performance and stability of the equipment.

[0041] In this embodiment, one end of the positioning member 2031 passes through the sliding groove and is connected to the adjustment hole 2032, and the other end abuts against the connecting plate 304. This abutting method not only provides stable support for the fastening assembly 3, but also prevents the fastening assembly 3 from displacing due to vibration or external force during the marking process, ensuring the accuracy and stability of marking.

[0042] In this embodiment, there are two groups of adjustment holes 2032, and the arrangement shapes of the two groups of adjustment holes 2032 are both arc-shaped. The sliding groove includes a first sliding groove 3041 and a second sliding groove 3042, and the cross-sections of the first sliding groove 3041 and the second sliding groove 3042 are also arc-shaped; among them, the first sliding groove 3041 corresponds to one group of adjustment holes 2032, and the second sliding groove 3042 corresponds to the other group of adjustment holes 2032. During the process of adjusting the operation angle, one of the positioning members 2031 is passed through the first sliding groove 3041 and inserted into one group of adjustment holes 2032, and a certain gap is provided between the end of the positioning member 2031 away from the sliding groove and the side surface of the connecting plate 304, so that the connecting plate 304 can slide along the direction of the arrangement of the adjustment holes 2032 by using the support of the positioning member 2031; when the connecting plate 304 slides to the operation angle, the other positioning member 2031 is passed through the second sliding groove 3042 and installed in the other group of adjustment holes 2032 to realize the positioning of the connecting plate 304.

[0043] Furthermore, in order to ensure that the fastening assembly 3 can always operate stably during the marking process, the positioning member 2031 is preferably a bolt, and threads adapted to the bolt are provided in the adjustment hole 2032 so that the positioning member 2031 is screwed with the adjustment hole 2032. The screwing method facilitates the operator to quickly support and position the connecting plate 304 by rotating the positioning member 2031, and also ensures the firm fixation of the positioning member 2031 in the adjustment hole 2032. Once the positioning member 2031 is tightened, it can stably maintain its required position, preventing displacement due to vibration or external force during the marking process, and ensuring the accuracy and stability of marking.

[0044] Moreover, through the engagement of the threads, the screwing method increases the connection strength between the positioning member 2031 and the adjustment hole 2032, making the structure between the fastening assembly 3 and the adjustment plate 203 more stable and rigid, and helping to reduce the marking error caused by structural deformation.

[0045] In this embodiment, a three-jaw chuck 302 is installed on the top of the mounting plate 301. The three-jaw chuck 302 has clamping plates 303. There are three clamping plates 303 arranged circumferentially, and the angles between the three clamping plates 303 are the same. As Figure 8 shown, the three-jaw chuck 302 includes a chuck body 3021. A large bevel gear 3023 is provided inside the chuck body 3021. A small bevel gear 3022 is engaged with the bottom of the large bevel gear 3023. The small bevel gear 3022 is arranged on a wrench insertion hole 3024, and the wrench insertion hole 3024 is a tubular structure. It should be noted here that the three-jaw chuck 302 is a prior art product. In this solution, the iron claws on the existing three-jaw chuck 302 are improved to clamping plates 303 made of flexible materials. In this way, when it is necessary to mark the thin-walled inner hole part 10, first insert a wrench into the wrench insertion hole 3024, and manually rotate the wrench to make the wrench drive the small bevel gear 3022 on the wrench insertion hole 3024 to rotate. The small bevel gear 3022 then drives the large bevel gear 3023 to rotate. At this time, the spiral grooves on the top of the large bevel gear 3023 that cooperate with the clamping plates 303 cause the three clamping plates 303 to displace synchronously. Finally, manually place the thin-walled inner hole part 10 at the center of the three clamping plates 303, and manually rotate the wrench again to make the three clamping plates 303 approach each other, so as to realize the clamping and fixing of the thin-walled inner hole part 10. Since in this embodiment, the clamping plates 303 are made of elastic materials, and each clamping plate 303 is composed of three rubber protective sleeves with different heights, the rubber protective sleeves have a certain elasticity, and can protect the thin-walled inner hole part 10 during the clamping process, avoiding causing indentations or deformations on the surface of the thin-walled inner hole part 10.

[0046] In this embodiment, a lifting unit 803 is slidably connected to the guiding assembly. A guiding rod 805 is provided at the bottom of the lifting unit 803, and a marking unit 806 is installed at the bottom of the guiding rod 805. The marking unit 806 includes a fixing plate 8061 and a marking head 8062. The marking head 8062 is inclined at the end of the fixing plate 8061. A rotating unit is provided at the top of the fixing plate 8061, and the top of the rotating unit is connected to the bottom of the guiding rod 805. Specifically, the lifting unit 803 is a slider. The guiding assembly includes a guide rail 802 and screws. The guide rail 802 is vertically installed on the side of the column 801 through the screws. One end of the lifting unit 803 is slidably connected to the guide rail 802, and the other end is connected to a cylinder. Both the cylinder and the marking head 8062 are connected to an air supply device 9 through a pipeline 4. A guiding rod 805 is installed at the bottom of the lifting unit 803. An installation block 804 is slidably connected to the bottom of the guiding rod 805. The installation block 804 is of a U-shaped structure and can slide along the entire length direction of the guiding rod 805, so as to adjust the position of the marking head 8062. The rotating unit is a motor. The driving unit of the motor is connected to the fixing plate 8061 and can drive the marking head 8062 to rotate 360 degrees around the motor as the axis. The marking head 8062 is inclined at the end of the fixing plate 8061, and the included angle between the marking head 8062 and the bottom of the fixing plate 8061 is an obtuse angle. This is because the marked surface of the thin-walled inner hole part 10 is inclined about 15° with respect to the axis of the thin-walled inner hole part 10. Therefore, when the marking head 8062 is inclined on the installation block 804, the included angle between the marked surface of the thin-walled inner hole part 10 and the marking head 8062 can be offset, facilitating the marking head 8062 to be perpendicular to the inner wall conical surface of the thin-walled inner hole part 10 to be marked. During the marking process, since pneumatic marking is adopted in this embodiment and it cooperates with the control panel 5 and the controller 11, according to the surface characteristics of the thin-walled inner hole part 10, by presetting the marking trajectory and operation parameters of the marking head 8062, a suitable marking path can be planned, so as to achieve an accurate movement trajectory and striking force, ultimately ensuring the clarity and consistency of the marking, outputting standard handwriting, and optimizing the striking force to reduce the impact on the thin-walled inner hole part 10.

[0047] In this embodiment, a control device is further included. The control device is electrically connected to the marking device 8, the fastening device, and the gas transmission device 9. The control device specifically includes a control panel 5 and a controller 11. Among them, the control panel 5 is used to control the automated operations of the marking device 8 and the fastening device. A plurality of operation buttons are provided on the control panel 5. Operators can complete the presetting of the operation procedures of the fastening device and the setting of the operation parameters of each component in the fastening device through the operation buttons. A start switch 6 and an adjustment button 7 are provided on the gas transmission device 9. The start switch 6 is used to start or stop the gas transmission device 9. The gas transmission device 9 conveys the gas source to the marking head 8062 through the pipeline 4. The adjustment button 7 is used to adjust the gas volume of the gas transmission device 9. The controller 11 is used to complete the presetting of the operation procedures of the marking device 8 and the setting of the operation parameters of each component in the marking device 8. The principle here is conventional technology and will not be elaborated specifically.

[0048] In a second aspect, a method for marking a thin-walled inner-hole part is provided. The method is carried out by using the above-mentioned thin-walled inner-hole part marking mechanism, as Fig. 9 shown, and includes: Step 1: Preset the operation parameters through the control device according to the wall thickness of the thin-walled inner-hole part. Exemplarily, before the marking operation, first clarify what the wall thickness data of the thin-walled inner-hole part 10 to be marked is, and adjust the preset operation parameters of the control device according to the confirmed wall thickness data. For example, in the application of an aviation plunger pump, there are two common types of plungers. The wall thickness data of the two types of plungers are 2.25 mm and 2.5 mm respectively, and their corresponding operation parameters are also different. Then, two sets of marking operation parameters need to be preset.

[0049] Step 2: Fix the thin-walled inner-hole part on the fastening device, and based on the preset operation parameters, adjust the operation angle of the fastening device so that the included angle between the fastening device and the marking device is an obtuse angle. Exemplarily, after determining the wall thickness data of the plunger to be marked, select the corresponding marking operation parameters according to the wall thickness data, and then manually adjust the operation of the fastening device more. For example, when the wall thickness of the plunger is 2.25 mm, as Figure 1 shown, manually rotate the mounting plate 301 with the top of the support plate 202 as the axis. During the rotation process, when the included angle formed between the bottom of the mounting plate 301 and the bottom plate 201 meets the operation requirements, it is okay.

[0050] Finally, it should be noted that: The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the scope of its protection. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: After reading the present invention, those skilled in the art can still make various changes, modifications, or equivalent replacements to the specific implementation manners of the invention. However, these changes, modifications, or equivalent replacements are all within the scope of the protection of the pending claims of the invention.

Claims

1. A marking mechanism for thin-walled inner hole parts, characterized in that: include: A support platform (1) having a marking device (8) at one end of its top and a fastening device at the other end, wherein the marking device (8) is connected to a gas delivery device (9); The marking device (8) comprises a column (801), the column (801) is provided with a guide assembly, and the guide assembly is slidably connected to a marking unit (806); The fastening device comprises an angle adjustment component (2), the top of the angle adjustment component (2) is connected to a fastening component (3), and the fastening component (3) is used to fasten the thin-walled inner hole part (10); Wherein, when marking the thin-walled inner hole part (10), the angle between the marking unit (806) and the fastening component (3) is an obtuse angle.

2. The thin-walled inner hole parts marking mechanism according to claim 1 is characterized in that: The angle adjustment assembly (2) comprises a bottom plate (201), one end of the bottom plate (201) being provided with a support plate (202), and the other end of the bottom plate (201) being provided with an adjustment plate (203); One end of the fastening assembly (3) is rotatably connected to the top of the support plate (202), and the other end is matched with the adjustment plate (203).

3. The thin-walled inner hole parts marking mechanism according to claim 2 is characterized in that: The adjustment plate (203) is axially perpendicular to the bottom plate (201) and the support plate (202), and an adjustment hole (2032) is provided on the adjustment plate (203); The fastening assembly (3) comprises a mounting plate (301), a connecting plate (304) being provided at the bottom of the mounting plate (301), a sliding groove being provided on the connecting plate (304), and the sliding groove being connected to the adjusting hole (2032) via a positioning member (2031).

4. The thin-walled inner hole parts marking mechanism according to claim 3 is characterized in that: One end of the positioning member (2031) passes through the slide slot and is connected to the adjustment hole (2032), and the other end abuts against the connecting plate (304).

5. The thin-walled inner hole parts marking mechanism according to claim 4 is characterized in that: The adjustment holes (2032) are provided in two groups, and the arrangement shapes of the two groups of adjustment holes (2032) are both arc-shaped; The slide groove comprises a first slide groove (3041) and a second slide groove (3042), wherein the first slide groove (3041) corresponds to one group of adjustment holes (2032), and the second slide groove (3042) corresponds to the other group of adjustment holes (2032).

6. The thin-walled inner hole parts marking mechanism according to claim 4 or 5, characterized in that: The positioning piece (2031) and the adjustment hole (2032) are threadedly connected.

7. The thin-walled inner hole parts marking mechanism according to claim 6 is characterized in that: The positioning member (2031) is a bolt.

8. The thin-walled inner hole parts marking mechanism according to claim 3 is characterized in that: A three-jaw chuck (302) is arranged on the top of the mounting plate (301), and a clamping plate (303) is provided on the three-jaw chuck (302); Three clamping plates (303) are arranged on a circumference, and the included angles between the three clamping plates (303) are the same; Wherein, the clamping plate (303) is made of elastic material.

9. The thin-walled inner hole parts marking mechanism according to claim 1 is characterized in that: A lifting unit (803) is slidably connected to the guide assembly, a guide rod (805) is provided at the bottom of the lifting unit (803), and the marking unit (806) is installed at the bottom of the guide rod (805); The marking unit (806) comprises a fixed plate (8061) and a marking head (8062), wherein the marking head (8062) is arranged obliquely at the end of the fixed plate (8061); A rotating unit is provided on the top of the fixed plate (8061), and the top of the rotating unit is connected to the bottom of the guide rod (805).

10. A marking method for thin-walled inner hole parts, characterized in that: The method is carried out by using the thin-walled inner hole parts marking mechanism according to any one of claims 1 to 9, comprising: According to the wall thickness of thin-walled inner hole parts, the operating parameters are preset through the control device; The thin-walled inner hole part is fixed on the fastening device, and based on the preset operating parameters, the operating angle of the fastening device is adjusted so that the angle between the fastening device and the marking device is an obtuse angle.

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