High-speed subtractive manufacturing device and subtractive manufacturing method

Abstract

The present invention discloses a high-speed subtractive manufacturing device and a subtractive manufacturing method, which relates to the technical field of subtractive processing, and aims to solve the technical problem of insufficient functionality in continuous operation, including an operating platform; the internal gap of the operating platform constitutes a subtractive operation chamber; two rubber gloves are arranged on the surface of the operating platform relative to the lower end of the subtractive operation chamber; a multi-station grinding structure is arranged at the middle end of the subtractive operation chamber; a double-mode multi-directional clamping system is arranged below the multi-station grinding structure; a placement table for placing valve guides is arranged on both sides of the multi-station grinding structure; wherein the multi-station grinding structure is connected to the operating platform through a lifting and adjusting oil cylinder. The present invention achieves a multifunctional effect through the above two operations, which satisfies the efficient and continuous working operation, and is also synchronously adapted to the subtractive work of grinding the inner hole and outer wall of the valve guide.

Description

Technical Field

[0001] The present invention relates to the technical field of subtractive processing, and more specifically, to a high-speed subtractive manufacturing device and a subtractive manufacturing method. Background Art

[0002] The titanium metal powder metallurgy process mainly includes the following steps: Powder preparation, atomization method: by breaking the liquid titanium metal into fine droplets under the action of high-speed airflow or water flow, and then cooling and solidifying to form powder. The powder prepared by this method has good sphericity and particle size distribution. Hydrogenation and dehydrogenation method: first hydrogenate the titanium metal to form a brittle hydride, then crush and dehydrogenate it to obtain titanium metal powder. Plasma rotating electrode method: Use a titanium metal rod as a consumable electrode, which rotates rapidly and melts under the high temperature of the plasma arc, and the droplets are thrown out and cooled to form powder.

[0003] Powder mixing: Titanium metal powder is uniformly mixed with other alloy element powders according to the performance requirements of the required parts. This can be achieved by mechanical stirring, ball milling, etc. to ensure the uniformity of the composition.

[0004] Pressing molding: The mixed powder is placed in a mold and pressure is applied through uniaxial pressing or isostatic pressing to arrange the powder particles closely to form a compact with a certain shape and initial density.

[0005] Injection molding: Suitable for manufacturing parts with complex shapes and small sizes. Powder is mixed with a binder to form a feed, which is then injected into a mold for molding.

[0006] Vacuum sintering: In a high vacuum environment, the pressed blank is heated to a temperature close to the melting point of titanium, causing metallurgical reactions such as diffusion and recrystallization between powder particles, thereby increasing the density and strength of the parts.

[0007] Hot isostatic pressing sintering: In a high temperature and high pressure inert gas environment, the compact is uniformly pressed in all directions, which can effectively eliminate pores and defects and further improve the performance of the parts. The parts prepared by primary processing are obtained through the above process.

[0008] Then through post-processing and machining: cutting, grinding and other processing are performed on the sintered parts to achieve precise size and surface roughness requirements. The parts prepared by secondary subtractive processing are obtained through the above process.

[0009] Heat treatment: Adjust the microstructure and performance of parts through heat treatment processes such as solid solution and aging.

[0010] The surface quality of parts prepared by conventional reduction in titanium powder metallurgy processing is usually good, while parts prepared by powder may require subsequent surface treatment to achieve higher precision and surface finish, and further machining is required to reduce the material to obtain the processed parts.

[0011] Valve guides made from titanium powder have the following advantages: Lightweight: Titanium has a relatively low density, which can reduce the weight of the valve guide, help reduce the overall weight of the engine, and improve the fuel economy and power performance of the vehicle. For example, in a racing engine, every bit of weight reduction will significantly help improve vehicle speed and handling performance. High strength and high heat resistance: Able to withstand the high temperature and high pressure environment when the engine is working, ensuring that the valve guide does not deform or damage under extreme conditions and maintains good working performance. For example, in a turbocharged engine, the high temperature environment has higher performance requirements for the valve guide, and the guide made from titanium powder is more competent. Good wear resistance: Reduce wear between the valve stem, extend the service life of the valve guide and valve, and reduce maintenance costs. Corrosion resistance: The working environment inside the engine is relatively harsh, and the corrosion resistance of titanium metal can keep the valve guide in good condition during long-term use. High-precision manufacturing possibility: The powder preparation process can achieve more complex and high-precision shapes, meeting the strict requirements of the valve guide for size and shape accuracy. Optimized thermal conductivity: helps to dissipate the heat generated during operation, reduce local temperature, and improve engine reliability. For example, after some high-end automobile engines use valve guides made of titanium metal powder, the performance and reliability of the engine have been significantly improved, and it also provides more possibilities for further optimization of the engine design.

[0012] The valve guide has very high requirements for precision, which is mainly reflected in the following aspects:

[0013] Dimensional accuracy: Inner diameter size: must be precisely matched with the diameter of the valve stem to ensure good guidance of the valve during movement. Too large or too small a gap will affect the normal operation of the valve. For example, too large a gap will cause the valve to shake, affecting the sealing performance of the valve and the power output of the engine; too small a gap will increase the friction between the valve and the guide tube, resulting in increased wear and even jamming. Outer diameter size: must fit closely with the mounting hole of the cylinder head to ensure a secure installation and good sealing. Cylindricity and straightness: Both the inner hole and the outer circle of the valve guide need to have good cylindricity and straightness to ensure the linearity and stability of the valve movement. If the cylindricity or straightness deviation is large, the valve will be subjected to uneven force during movement, which can easily lead to uneven wear and eccentric wear of the valve.

[0014] Surface roughness: The inner surface roughness should be low to reduce friction and wear between the valve stem and the guide tube. The inner surface roughness value is usually required to be below Ra0.4. The outer surface roughness should not be too high to ensure good fit and sealing with the cylinder head mounting hole.

[0015] Position accuracy: The position installed on the cylinder head must be accurate, and the concentricity with the valve seat must be high to ensure the normal opening and closing and sealing of the valve. For example, in high-performance automobile engines, in order to achieve higher speeds and power output, the accuracy requirements of the valve guide will be more stringent, and any slight deviation may lead to reduced engine performance, increased fuel consumption, or even failure.

[0016] In the existing grinding and subtractive operation on the valve guide made of titanium metal powder, the grinding operation is performed through a grinding device to realize the grinding process of the outer surface and internal channel of the valve guide. The existing grinding device has insufficient functionality in batch processing. In the continuous operation, the cylindrical grinding angle of the outer surface of the valve guide during the continuous grinding process is insufficient and cannot be effectively adapted. In view of this, we propose a high-speed subtractive manufacturing device and a subtractive manufacturing method. Summary of the invention

[0017] The object of the present invention is to provide a high-speed subtractive manufacturing device and a subtractive manufacturing method to solve the technical problem of insufficient functionality in continuous operation.

[0018] In order to solve the above technical problems, the present invention provides the following technical solutions: a high-speed subtractive manufacturing device and a subtractive manufacturing method, comprising an operating platform; the internal gap of the operating platform constitutes a subtractive operation chamber; two rubber gloves are arranged on the surface of the operating platform relative to the lower end of the subtractive operation chamber; a multi-station grinding structure is arranged at the middle end of the subtractive operation chamber; a double-mode multi-directional clamping system is arranged below the multi-station grinding structure; placement tables for placing valve guides are arranged on both sides of the multi-station grinding structure; wherein the multi-station grinding structure is connected to the operating platform through a lifting and adjusting cylinder; and a retaining frame that slides in contact with the multi-station grinding structure is arranged inside the subtractive operation chamber; the double-mode multi-directional clamping system includes a loading processing table arranged below the multi-station grinding structure; wherein the loading and The workbench is provided with a processing ring groove in an annular structure and a feeding displacement ring groove in an annular structure respectively; wherein the processing ring groove and the feeding displacement ring groove have an intersection; two opposing transmission platforms are provided inside the feeding processing platform relative to the positions of the processing ring groove and the feeding displacement ring groove, and a number of driving grooves are provided in annular shapes at equal intervals on the sides of the two opposing transmission platforms; wherein a basic rotating shaft seat is movably provided in the several driving grooves of any one of the opposing transmission platforms, and a fixing component for internal support and / or external clamping of the valve guide is rotatably provided on the basic rotating shaft seat; a sealing and opening component is provided on the feeding processing platform relative to the position of the processing ring groove; wherein a driving component is provided on one side of the opposing transmission platform relatively close to the rubber glove; wherein adjustment components are provided on both sides of the opposing transmission platform relatively far away from the rubber glove.

[0019] The present invention causes two opposing transmission platforms to synchronously rotate in opposite directions based on the driving of the driving component, and cooperates with the guide component setting of the basic rotating shaft seat to cause the basic rotating shaft seat to perform an "8"-shaped unidirectional rotating movement as a whole. In this way, the basic rotating shaft seat can realize continuous loading by moving in the processing ring groove and the loading displacement ring groove, and an independent loading device is used to perform the same-position loading and unloading operation at a single position at the loading displacement ring groove position to realize efficient loading work. On the basis of satisfying this convenience for loading and unloading, the opening and closing of the sealing and opening components are used to realize the unidirectional rotating movement and annular rotating movement of multiple basic rotating shaft seats as a whole in the shape of "8". In the above-mentioned unidirectional rotating movement in the shape of "8", the fixed-point self-rotation of the multi-station grinding structure is carried out, and the lifting and adjusting cylinder is used for intermittent loading and unloading. The gap-type lifting and lowering motion is used to grind the inner hole of the valve guide made of titanium metal powder in the external clamping state of the fixed component on the basic rotating shaft seat in turn, and the valve guide made of titanium metal powder is fixed in the internal support state of the fixed component on the basic rotating shaft seat, and multiple basic rotating shaft seats are located at the processing ring groove in the "8"-shaped unidirectional rotation motion, and the basic rotating shaft seat is switched from the "8"-shaped unidirectional rotation motion to the annular rotation motion through the closing of the sealing and opening component, and the multi-station grinding structure is cooperated with the follow-up revolution and rotation integrated grinding work to perform circular grinding on the outer wall of the valve guide. The above-mentioned operations achieve a multi-functional effect, meet the efficient and continuous working operation, and synchronously adapt to the grinding and material reduction work of the inner hole and outer wall of the valve guide.

[0020] Preferably, the multi-station grinding structure includes a connecting auxiliary frame arranged at the pushing end of the lifting and adjusting cylinder; a rotating frame is fixedly arranged at the bottom of the connecting auxiliary frame; a sun gear is movably and rotatably arranged inside the rotating frame; a start-stop gear meshing with the sun gear is arranged on the side of the sun gear, and a start-stop servo motor connected to the start-stop gear is arranged on the connecting auxiliary frame; a number of planetary gears meshing with the sun gear are arranged in a ring shape with equal intervals inside the sun gear; the planetary gears are rotatably connected through the planetary frame, and a center gear is arranged in the middle of the several planetary gears; and a servo drive motor connected to the center gear is arranged on the connecting auxiliary frame; wherein, a tool head clamp is arranged on the bottom surface of the planetary gear, and a grinding tool head is clamped on the tool head clamp.

[0021] Preferably, the two opposing transmission platforms are meshingly connected, and the two opposing transmission platforms are meshingly transmitted in opposite directions, so that the corresponding driving grooves distributed on the two opposing transmission platforms overlap intermittently, forming an intermittent center-hole grinding and feeding structure that controls the basic rotating shaft seat to make an "8"-shaped unidirectional circular rotation movement to form a sequential progress.

[0022] Preferably, guide blocks are symmetrically arranged on both radial sides of the basic rotating shaft seat; wherein the guide blocks are triangular structures, wherein a honeycomb-shaped complex force elastic block is arranged inside the guide blocks; the basic rotating shaft seat is connected to the fixed component through a connecting shaft, and the connecting shaft and the basic rotating shaft seat are connected by a ratchet, wherein the high end of the connecting shaft is provided with meshing teeth distributed in an annular manner with equal spacing.

[0023] Preferably, the sealing and opening component includes a sealing and opening tooth ring with an arc-shaped structure; wherein the sealing and opening tooth ring is meshed and connected with the adjusting component; wherein a plurality of plug-in shafts are sequentially arranged on the upper surface of the sealing and opening tooth ring; a lifting arc block is penetrated by the plug-in shaft above the sealing and opening tooth ring, and the lifting arc block is threadedly connected to the loading processing platform; a lifting seat that is plug-matched with the loading processing platform is arranged above the lifting arc block, and a plurality of lifting blocks are arranged on the upper surface of the lifting seat, and a receiving groove matching the number of the lifting blocks is opened inside the loading processing platform; and auxiliary teeth are hingedly arranged inside the receiving groove.

[0024] Preferably, the adjusting component drives the sealing and opening tooth ring to rotate, causing the lifting arc block to rotate synchronously through the plug-in shaft, and is threadedly connected to the loading processing table through the lifting arc block, causing the lifting arc block to rise and / or descend, causing the lifting seat to contact and / or separate from the auxiliary teeth, causing the auxiliary teeth and the meshing teeth to be located on the same horizontal line and / or rotationally offset, causing the auxiliary teeth to mesh with the meshing teeth.

[0025] Preferably, the driving component includes an auxiliary servo motor arranged on the side of the loading displacement ring groove and an auxiliary gear arranged at the output end of the auxiliary servo motor; the adjusting component includes an adjusting motor arranged on the side of the processing ring groove and an adjusting gear arranged at the output end of the adjusting motor.

[0026] A method for using a high-speed subtractive manufacturing device and a subtractive manufacturing method comprises the following steps:

[0027] S100, external connection setting: opening the external connection window of the operating machine through the push rod, so that the loading and unloading device can enter the material reduction operation chamber to perform up and down work;

[0028] S200, batch subtractive operation:

[0029] S201, if the inner wall of the valve guide is subjected to material reduction grinding;

[0030] First, the central gear is rotated by the power output of the servo drive motor, and multiple planetary gears are synchronously driven to rotate by a single central gear, and the movement of the start-stop gear is synchronously controlled based on the start of the start-stop servo motor. During the rotation of the start-stop gear, the sun gear is rotated synchronously so that the planetary carrier as a whole does not rotate, and then the auxiliary servo motor is used to drive the auxiliary gear in the opposite direction to intermittently drive the opposite transmission platform to rotate. At the same time, the connecting shaft and the basic rotating shaft seat are in a ratchet meshing and locking state, and then the basic rotating shaft seat, the fixed component and the connecting shaft are rotated in an "8" shape as a whole. The fixed component is relatively locked to clamp the outer wall of the valve guide placed by the loading and unloading device, and then the basic rotating shaft seat is driven by intermittent 120-degree rotation to load the material in a one-way sequential manner; then, when the valve guide moves to the corresponding position, the stroke of the lifting and adjusting cylinder is used to cause the grinding head to descend and contact the inner wall of the valve guide to achieve material reduction;

[0031] S202, if the circumferential surface of the outer wall of the valve guide is subjected to material reduction grinding;

[0032] The auxiliary servo motor drives the auxiliary gear relative to the positive direction to intermittently drive the opposite transmission platform to rotate, while the connecting shaft and the basic rotating shaft seat are in a ratchet non-engaged state, and then the basic rotating shaft seat, the fixed component and the connecting shaft are rotated in an "8" shape as a whole, and the fixed component is relatively expanded to clamp the valve guide placed in the loading and unloading device, and then the basic rotating shaft seat is driven by intermittent 120-degree rotation to enable the basic rotating shaft seat to load in a unidirectional sequential manner; until multiple basic rotating shaft seats are synchronously located in the loading displacement ring groove, and then the valve guide moves to the corresponding position and stops rotating, and then the two adjusting components are synchronously driven to rotate to cause the sealing and opening tooth ring located at this position to rotate, and the jacking arc block is synchronously driven to rotate through the plug-in shaft, and the jacking arc block is threadedly connected to the loading processing platform, so that the jacking seat is lifted and lowered as a whole, and the lifting setting is used to squeeze and rotate the auxiliary teeth. At this time, the sealing and opening tooth ring is as follows Fig. 9The state shown is then driven by the auxiliary servo motor again, so that the multiple basic rotating shaft seats are synchronously located in the machining ring groove, and then the sealing and opening toothed ring located in the machining ring groove (601) is driven to rotate synchronously by the adjusting component to close the machining ring groove in an annular manner, and then the central gear is rotated by the power output of the servo drive motor, and the multiple planetary gears are synchronously driven to rotate by a single central gear, and the movement of the start and stop gears is synchronously controlled based on the locking of the start and stop servo motor, so that the sun gear does not rotate and the planetary carrier rotates as a whole, and the grinding cutter head is lowered and contacted with the circumferential surface point of the outer wall of the valve guide by the lifting and adjusting cylinder stroke, and the auxiliary servo motor drives the counter-drive platform to rotate and the rotation circle speed is adapted to the revolution rotation circle speed of the planetary carrier, and the connecting shaft and the basic rotating shaft seat are in a ratchet rotation state, so that the meshing teeth of the connecting shaft are meshed with the auxiliary teeth for transmission, so that the valve guide on the fixed component is synchronously rotated to achieve the work of grinding and reducing the material of the circumferential surface of the outer wall of the valve guide;

[0033] S300, cleaning work; the titanium metal dust after grinding is adsorbed by an external dust suction device.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. The present invention causes two opposing transmission platforms to synchronously rotate in opposite directions based on the driving of the driving component, and cooperates with the guide component setting of the basic rotating shaft seat to cause the basic rotating shaft seat to perform an "8"-shaped unidirectional rotating movement as a whole. In this way, the basic rotating shaft seat can realize continuous loading in the processing ring groove and the loading displacement ring groove. An independent loading device is used to perform a single-position loading and unloading operation at the loading displacement ring groove position, thereby realizing efficient loading work. On the basis of satisfying this convenience for loading and unloading, the opening and closing of the sealing and opening components are used to realize the unidirectional rotation movement and annular rotation movement of multiple basic rotating shaft seats as a whole in the shape of "8". In the above-mentioned unidirectional rotation movement in the shape of "8", the multi-station grinding structure is used for fixed-point self-rotation and the lifting and adjusting cylinder is used for The intermittent lifting and lowering motion is used to grind the inner hole of the valve guide made of titanium metal powder in the external clamping state of the fixed component on the basic rotating shaft seat in turn, and the valve guide made of titanium metal powder is fixed in the internal support state of the fixed component on the basic rotating shaft seat, and multiple basic rotating shaft seats are located at the processing ring groove through the "8"-shaped unidirectional rotation motion, and the basic rotating shaft seat is switched from the "8"-shaped unidirectional rotation motion to the annular rotation motion through the closing of the sealing and opening component, and the multi-station grinding structure is used to follow the integrated revolution and rotation grinding to perform circular grinding on the outer wall of the valve guide. The above-mentioned operations achieve a multi-functional effect, which meets the requirements of efficient and continuous working operations while synchronously adapting to the grinding and material reduction work of the inner hole and outer wall of the valve guide.

[0036] 2. The present invention causes the central gear to rotate through the power output of the servo drive motor, and synchronously drives multiple planetary gears to rotate through a single central gear, and synchronously controls the movement of the start-stop gear based on the starting and braking of the start-stop servo motor. A switch structure for controlling the sun gear is formed through the rotation and braking of the start-stop gear. During the rotation of the start-stop gear, the sun gear is caused to rotate synchronously, so that the planetary carrier does not rotate as a whole. This method is suitable for the fixed-point grinding of the inner hole of the valve guide; when the start-stop gear is locked, the sun gear is caused to not rotate synchronously, so that the planetary carrier rotates as a whole. This method is suitable for the grinding of the outer wall of the valve guide.

[0037] 3. The present invention enables the guide block to perform adaptive deformation adjustment through the setting of the complex elastic block. In this way, the basic rotating shaft seat can switch between the processing ring groove and the loading displacement ring groove during the "8"-shaped unidirectional rotation movement on the loading processing table, so as to improve the accuracy of the "8"-shaped unidirectional rotation movement while maintaining the switching stability.

[0038] 4. The present invention uses two adjusting components to synchronously rotate and drive, so that the sealing and opening tooth ring located at this position rotates and drives the lifting arc block to rotate synchronously through the plug-in shaft, and the lifting arc block is threadedly connected to the loading processing table, so that the lifting seat can be raised and lowered as a whole, and the lifting block is used to squeeze and rotate the auxiliary teeth to make the auxiliary teeth mesh with the meshing teeth. In this way, when the driving component is relatively forwardly rotated and driven, the connecting shaft and the basic rotating shaft seat are in a ratchet rotation state, so that the connecting shaft and the valve guide on the fixed component are synchronously rotated to achieve the circumferential surface of the outer wall of the valve guide. At the same time, the rotation of the valve guide is opposite to the rotation direction of the grinding cutter head, thereby realizing high-speed grinding operation; and the descending setting is used to make the auxiliary teeth naturally rotate and hide under force, and when the driving component is relatively reversely rotated and driven, the connecting shaft and the basic rotating shaft seat are in a ratchet meshing and locking state, effectively avoiding the valve guide on the fixed component from following the rotation based on the rotation of the grinding cutter head, resulting in poor grinding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0040] Figure 2 It is a schematic diagram of the internal structure of the subtractive operation chamber of the present invention.

[0041] Figure 3 It is a schematic diagram of the three-dimensional structure of the multi-station grinding structure and the dual-mode multi-directional clamping system of the present invention.

[0042] Figure 4 It is a schematic diagram of the three-dimensional structure of the multi-station grinding structure of the present invention.

[0043] Figure 5 It is a schematic diagram of the three-dimensional structure from another perspective of the multi-station grinding structure of the present invention.

[0044] Figure 6 It is a schematic diagram of the split three-dimensional structure of the dual-mode multi-directional clamping system of the present invention.

[0045] Figure 7 It is a schematic diagram of the top view of the dual-mode multi-directional clamping system of the present invention.

[0046] Figure 8 It is a schematic diagram of the top view structure of the basic rotating shaft seat of the present invention.

[0047] Fig. 9 It is a schematic diagram of the installation structure of the sealing and opening assembly of the present invention.

[0048] Fig.10 For the present invention Fig. 9 Schematic diagram of the local enlarged structure at point A in the middle.

[0049] Description of the numbers in the figure:

[0050] 1. Operating machine; 2. Multi-station grinding structure; 3. Dual-mode multi-directional clamping system; 4. Placement table; 5. Lifting and adjusting cylinder; 6. Loading and processing table; 7. Opposite transmission table; 8. Basic rotating shaft seat; 9. Sealing and opening assembly; 10. Driving assembly; 11. Adjustment assembly; 13. Fixing assembly; 15. Connecting shaft;

[0051] 101. Rubber gloves; 102. Cage;

[0052] 201, connecting auxiliary frame; 202, rotating frame; 203, sun gear; 204, start-stop gear; 2041, start-stop servo motor; 205, planetary gear; 2051, planetary frame; 2052, tool head fixture; 2053, grinding tool head; 206, central gear; 2061, servo drive motor;

[0053] 601, machining ring groove; 602, feeding displacement ring groove; 603, receiving groove; 604, auxiliary teeth;

[0054] 701, drive slot;

[0055] 802, guide block; 8021, complex elastic block;

[0056] 901, sealing and opening gear ring; 9011, plug-in shaft; 902, lifting arc block; 903, lifting seat; 9031, lifting block;

[0057] 1001, auxiliary servo motor;

[0058] 1101, adjusting the motor; 1102, adjusting the gear;

[0059] 1501. Meshing teeth. DETAILED DESCRIPTION

[0060] like Figures 1 to 10As shown, the present invention relates to a high-speed subtractive manufacturing device, comprising an operating platform 1; the internal gap of the operating platform 1 constitutes a subtractive operating chamber; two rubber gloves 101 are arranged on the surface of the operating platform 1 relative to the lower end of the subtractive operating chamber; a multi-station grinding structure 2 is arranged at the middle end of the subtractive operating chamber; a double-mode multi-directional clamping system 3 is arranged below the multi-station grinding structure 2; placement tables 4 for placing valve guides are arranged on both sides of the multi-station grinding structure 2; wherein the multi-station grinding structure 2 is connected to the operating platform 1 through a lifting and adjusting cylinder 5; and a retaining frame 102 that is slidably fitted with the multi-station grinding structure 2 is arranged inside the subtractive operating chamber; the double-mode multi-directional clamping system 3 includes a loading processing table 6 arranged below the multi-station grinding structure 2; wherein the loading processing table 6 is provided with a processing ring groove 601 in an annular structure and a processing ring groove 602 in an annular structure. The feeding displacement annular groove 602 of the structure; wherein, the processing annular groove 601 and the feeding displacement annular groove 602 have an intersection; two opposing transmission platforms 7 are arranged inside the feeding processing platform 6 relative to the processing annular groove 601 and the feeding displacement annular groove 602, and a plurality of driving grooves 701 are arranged in a circular shape with equal intervals on the sides of the two opposing transmission platforms 7; wherein, a basic rotating shaft seat 8 is movably arranged in the plurality of driving grooves 701 of any one of the opposing transmission platforms 7, and a fixing component 13 for internal support and / or external clamping of the valve guide is rotatably arranged on the basic rotating shaft seat 8; a sealing component 9 is arranged on the feeding processing platform 6 relative to the processing annular groove 601; wherein, a driving component 10 is arranged on one side of the opposing transmission platform 7 relatively close to the rubber glove 101; wherein, adjustment components 11 are arranged on both sides of the opposing transmission platform 7 relatively far away from the rubber glove 101.The present invention is based on the drive of the driving component 10 so that the two opposing transmission platforms 7 can synchronously rotate in opposite directions, and cooperate with the guide component setting of the basic rotating shaft seat 8 to make the basic rotating shaft seat 8 perform an "8"-shaped unidirectional rotation movement as a whole. In this way, the basic rotating shaft seat 8 can move in the processing ring groove 601 and the loading displacement ring groove 602 to realize continuous loading, and an independent loading device is used to perform a single-position loading and unloading operation at the loading displacement ring groove 602 position to achieve efficient loading work. On the basis of satisfying this convenience for loading and unloading, the opening and closing of the sealing and opening components 9 can realize the unidirectional rotation movement and annular rotation movement of multiple basic rotating shaft seats 8 as a whole in the shape of "8". In the above-mentioned "8"-shaped unidirectional rotation movement, the multi-station grinding structure 2 is used for fixed-point self-rotation and the lifting and adjusting cylinder 5 is used. Intermittent lifting and lowering movements are performed to grind the inner holes of the valve guides made of titanium metal powder in the external clamping state of the fixing component 13 on the basic rotating shaft seat 8 in turn, and the valve guides made of titanium metal powder in the internal support state of the fixing component 13 on the basic rotating shaft seat 8 are fixed, and multiple basic rotating shaft seats 8 are located at the processing ring groove 601 in the "8"-shaped unidirectional rotational movement, and the basic rotating shaft seat 8 is switched from the "8"-shaped unidirectional rotational movement to the annular rotational movement through the closing of the sealing component 9, and the multi-station grinding structure 2 is cooperated with the follow-up revolution and rotation integrated grinding work to perform circular grinding on the outer wall of the valve guide. The above-mentioned operations achieve a multi-functional effect, meet the efficient and continuous working operation, and synchronously adapt to the grinding and material reduction work of the inner hole and outer wall of the valve guide.

[0061] In an embodiment of the present invention, the multi-station grinding structure 2 includes a connecting auxiliary frame 201 arranged at the pushing end of the lifting and adjusting cylinder 5; a rotating frame 202 is fixedly arranged at the bottom of the connecting auxiliary frame 201; a sun gear 203 is movably and rotatably arranged inside the rotating frame 202; a start-stop gear 204 meshingly connected to the sun gear 203 is arranged on the side of the sun gear 203, and a start-stop servo motor 2041 connected to the start-stop gear 204 is arranged on the connecting auxiliary frame 201; a plurality of planetary gears 205 meshingly connected to the sun gear 203 are arranged in a ring shape with equal intervals inside the sun gear 203; the planetary gears 205 are rotatably connected through a planetary frame 2051, and a central gear 206 is arranged in the middle of the plurality of planetary gears 205; and a servo drive motor 2061 connected to the central gear 206 is arranged on the connecting auxiliary frame 201; wherein, a tool head clamp 2052 is arranged on the bottom surface of the planetary gear 205, and a grinding tool head 2053 is clamped on the tool head clamp 2052. The present invention causes the central gear 206 to rotate through the power output of the servo drive motor 2061, and synchronously drives multiple planetary gears 205 to rotate through a single central gear 206, and synchronously controls the movement of the start-stop gear 204 based on the starting and braking of the start-stop servo motor 2041. The switch structure for controlling the sun gear 203 is formed by the rotation and braking of the start-stop gear 204. When the start-stop gear 204 rotates, the sun gear 203 rotates synchronously, causing the planet carrier 2051 to not rotate as a whole. This method is suitable for the fixed-point grinding of the inner hole of the valve guide; when the start-stop gear 204 is locked, the sun gear 203 does not rotate synchronously, causing the planet carrier 2051 to rotate as a whole. This method is suitable for the grinding of the outer wall of the valve guide.

[0062] In an embodiment of the present invention, the two opposing transmission platforms 7 are meshed and connected, and the two opposing transmission platforms 7 are meshed and transmitted in opposite directions, so that the corresponding driving grooves 701 distributed on the two opposing transmission platforms 7 are intermittently overlapped, forming an intermittent center-hole grinding and feeding structure that controls the basic rotating shaft seat 8 to make an "8"-shaped unidirectional circular rotation movement to form a sequentially moving intermittent center-hole grinding structure.

[0063] In the embodiment of the present invention, the guide blocks 802 are symmetrically arranged on both sides of the radial direction of the basic rotating shaft seat 8; wherein the guide blocks 802 are triangular in structure, wherein a honeycomb-shaped compound elastic block 8021 is arranged inside the guide blocks 802; the basic rotating shaft seat 8 is connected to the fixing assembly 13 through the connecting shaft 15, and the connecting shaft 15 and the basic rotating shaft seat 8 are connected by a ratchet, wherein the high end of the connecting shaft 15 is provided with annular meshing teeth 1501 distributed at equal intervals. The present invention enables the guide blocks 802 to perform adaptive deformation adjustment through the provision of the compound elastic block 8021, and in this way, the basic rotating shaft seat 8 can switch between the machining annular groove 601 and the loading displacement annular groove 602 in the "8"-shaped unidirectional rotation movement on the loading processing table 6, so as to improve the accuracy of the "8"-shaped unidirectional rotation movement, while maintaining the switching stability.

[0064] In an embodiment of the present invention, the sealing and opening component 9 includes a sealing and opening tooth ring 901 with an arc-shaped structure; wherein the sealing and opening tooth ring 901 is meshed and connected with the adjusting component 11; wherein, a plurality of plug-in shafts 9011 are sequentially arranged on the upper surface of the sealing and opening tooth ring 901; a lifting arc block 902 is penetrated by the plug-in shaft 9011 above the sealing and opening tooth ring 901, and the lifting arc block 902 is threadedly connected to the loading processing table 6; a lifting seat 903 which is plugged and matched with the loading processing table 6 is arranged above the lifting arc block 902, and a plurality of lifting blocks 9031 are arranged on the upper surface of the lifting seat 903, and a receiving groove 603 matching the number of the lifting blocks 9031 is opened inside the loading processing table 6; and an auxiliary tooth 604 is hingedly arranged inside the receiving groove 603. The present invention uses two adjusting components 11 to synchronously rotate and drive, so that the sealing and opening tooth ring 901 located at this position rotates and drives the lifting arc block 902 to rotate synchronously through the plug-in shaft 9011, and the lifting arc block 902 is threadedly connected with the feeding processing table 6, so that the lifting seat 903 is adjusted to rise and fall as a whole, and the lifting block 9031 is used to squeeze and rotate the auxiliary teeth 604 by using the lifting setting, so that the auxiliary teeth 604 are meshed and connected with the meshing teeth 1501. In this way, the driving component 10 is relatively driven in the positive direction, so that the connecting shaft 15 and the basic rotating shaft seat 8 are in a ratchet rotation state, so that The connecting shaft 15 and the valve guide on the fixed component 13 rotate synchronously to realize the circumferential surface grinding and material reduction of the outer wall of the valve guide. At the same time, the rotational movement of the valve guide is opposite to the rotation direction of the grinding head 2053, thereby realizing high-speed grinding operation; and the lowering setting is used to make the auxiliary teeth 604 naturally rotate and hide under force, and the relatively reverse rotation drive of the driving component 10 causes the connecting shaft 15 and the basic rotating shaft seat 8 to be in a ratchet meshing and locking state, effectively preventing the valve guide on the fixed component 13 from rotating synchronously with the rotation of the grinding head 2053, resulting in poor grinding operation.

[0065] In an embodiment of the present invention, the adjusting component 11 drives the sealing and opening tooth ring 901 to rotate, causing the lifting arc block 902 to rotate synchronously through the plug-in shaft 9011, and is threadedly connected to the loading processing table 6 through the lifting arc block 902, causing the lifting arc block 902 to rise and / or descend, causing the lifting seat 903 to contact and / or separate from the auxiliary teeth 604, causing the auxiliary teeth 604 and the meshing teeth 1501 to be located on the same horizontal line and / or rotationally offset, causing the auxiliary teeth 604 to mesh with the meshing teeth 1501.

[0066] In an embodiment of the present invention, the driving component 10 includes an auxiliary servo motor 1001 arranged on the side of the loading displacement ring groove 602 and an auxiliary gear arranged at the output end of the auxiliary servo motor 1001; the adjusting component 11 includes an adjusting motor 1101 arranged on the side of the machining ring groove 601 and an adjusting gear 1102 arranged at the output end of the adjusting motor 1101.

[0067] Working principle: This embodiment provides a high-speed subtractive manufacturing device and a subtractive manufacturing method, using steps:

[0068] S100, external connection setting: opening the external connection window of the operating machine 1 by a push rod, so that the loading and unloading device can enter the material reduction operation chamber to perform up and down work;

[0069] S200, batch subtractive operation:

[0070] S201, if the inner wall of the valve guide is subjected to material reduction grinding;

[0071] First, the power output of the servo drive motor 2061 causes the central gear 206 to rotate, and the single central gear 206 synchronously drives the multiple planetary gears 205 to rotate, and based on the start-stop servo motor 2041, the movement of the start-stop gear 204 is synchronously controlled. During the rotation of the start-stop gear 204, the sun gear 203 rotates synchronously, so that the planetary carrier 2051 does not rotate as a whole, and then the auxiliary servo motor 1001 drives the auxiliary gear in the opposite direction to intermittently drive the opposite transmission platform 7 to rotate, and at the same time, the connecting shaft 15 and The basic rotating shaft seat 8 is in a ratchet engagement locking state, and then the basic rotating shaft seat 8, the fixing component 13 and the connecting shaft 15 are rotated and displaced in an "8" shape as a whole, and the fixing component 13 is relatively locked to clamp the outer wall of the valve guide placed by the loading and unloading device, and then the basic rotating shaft seat 8 is driven by intermittent 120-degree rotation to enable the one-way sequential loading of the material; then, when the valve guide moves to the corresponding position, the lifting and adjusting cylinder 5 strokes to cause the grinding head 2053 to descend and contact the inner wall of the valve guide to achieve material reduction;

[0072] S202, if the circumferential surface of the outer wall of the valve guide is subjected to material reduction grinding;

[0073] The auxiliary servo motor 1001 is used to intermittently drive the counter transmission platform 7 to rotate relative to the positive driving auxiliary gear, and at the same time, the connecting shaft 15 and the basic rotating shaft seat 8 are in a ratchet non-engaged state, and then the basic rotating shaft seat 8, the fixing component 13 and the connecting shaft 15 are rotated and displaced in an "8" shape as a whole, and the fixing component 13 is relatively unfolded to clamp the valve guide placed in the loading and unloading device, and then the basic rotating shaft seat 8 is driven by intermittent 120-degree rotation to load the material in a unidirectional sequential manner; until multiple basic rotating shaft seats 8 is synchronously located in the feeding displacement ring groove 602, and then when the valve guide moves to the corresponding position, it stops rotating and moving, and then the sealing and opening tooth ring 901 located at this position is synchronously driven to rotate through the two adjustment components 11, and the lifting arc block 902 is synchronously driven to rotate through the plug-in shaft 9011, and the lifting arc block 902 is threadedly connected with the feeding processing table 6, so that the lifting seat 903 is adjusted to rise and fall as a whole, and the lifting block 9031 is used to squeeze and rotate the auxiliary tooth 604 by using the lifting setting. At this time, the sealing and opening tooth ring 901 is as shown in FIG. Fig. 9 The state shown is then driven again by the auxiliary servo motor 1001, so that the multiple basic rotating shaft seats 8 are synchronously located in the processing ring groove 601, and then the sealing and opening toothed ring 901 located in the processing ring groove (601) is synchronously rotated and driven by the adjustment component 11 to annularly close the processing ring groove 601, and then the power output of the servo drive motor 2061 causes the central gear 206 to rotate, and the multiple planetary gears 205 are synchronously driven to rotate by the single central gear 206, and the movement of the start-stop gear 204 is synchronously controlled based on the locking of the start-stop servo motor 2041, so that the ... The male gear 203 does not rotate, causing the planetary carrier 2051 to rotate as a whole. The lifting and adjusting cylinder 5 strokes to cause the grinding cutter head 2053 to descend and contact the point on the circumferential surface of the outer wall of the valve guide, and the auxiliary servo motor 1001 drives the counter transmission platform 7 to rotate and adapt the rotation speed to the orbital rotation speed of the planetary carrier 2051. The connecting shaft 15 and the basic rotating shaft seat 8 are in a ratchet rotation state, so that the meshing teeth 1501 of the connecting shaft 15 mesh with the auxiliary teeth 604 for transmission, causing the valve guide on the fixed component 13 to rotate synchronously to achieve the work of grinding and reducing the material of the circumferential surface of the outer wall of the valve guide.

[0074] S300, cleaning work; the titanium metal dust after grinding is adsorbed by an external dust suction device.

[0075] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A high-speed subtractive manufacturing device, characterized in that: The invention comprises an operating platform (1); the internal gap of the operating platform (1) forms a subtractive operating chamber; two rubber gloves (101) are arranged on the surface of the operating platform (1) at a position relative to the lower end of the subtractive operating chamber; a multi-station grinding structure (2) is arranged at the middle end of the subtractive operating chamber; a dual-mode multi-directional clamping system (3) is arranged below the multi-station grinding structure (2); and a placement table (4) for placing a valve guide is arranged on both sides of the multi-station grinding structure (2); The multi-station grinding structure (2) is connected to the operating machine (1) via a lifting and adjusting cylinder (5); Furthermore, a retaining frame (102) is provided inside the material reduction operation chamber and is slidably fitted with the multi-station grinding structure (2); The dual-mode multi-directional clamping system (3) comprises a loading processing table (6) arranged below the multi-station grinding structure (2); Wherein, the material loading processing table (6) is provided with a processing annular groove (601) and a material loading displacement annular groove (602) in an annular structure. Wherein, the machining annular groove (601) and the loading displacement annular groove (602) have an intersection; Two opposing transmission platforms (7) are arranged inside the material loading processing platform (6) at positions relative to the processing annular groove (601) and the material loading displacement annular groove (602), and a plurality of driving grooves (701) are arranged in a circular shape and at equal intervals on the sides of the two opposing transmission platforms (7); Wherein, a basic rotating shaft seat (8) is movably arranged in a plurality of driving grooves (701) of any one of the opposing transmission platforms (7), and a fixing component (13) for internally supporting and / or externally clamping the valve guide is rotatably arranged on the basic rotating shaft seat (8); The loading processing platform (6) is provided with a sealing and opening component (9) at a position relative to the processing ring groove (601); Wherein, a driving assembly (10) is provided on a side of the transmission platform (7) that is relatively close to the rubber glove (101); Wherein, adjustment components (11) are arranged on both sides of the opposite transmission platform (7) which are relatively far away from the rubber glove (101).

2. A high-speed subtractive manufacturing device according to claim 1, characterized in that: The multi-station grinding structure (2) comprises a connecting auxiliary frame (201) arranged at the pushing end of the lifting and adjusting oil cylinder (5); a rotating frame (202) is fixedly arranged at the bottom of the connecting auxiliary frame (201); a sun gear (203) is movably and rotatably arranged inside the rotating frame (202); a start-stop gear (204) meshingly connected to the sun gear (203) is arranged on the side of the sun gear (203); and a start-stop servo motor (2041) connected to the start-stop gear (204) is arranged on the connecting auxiliary frame (201); A plurality of planetary gears (205) meshingly connected to the sun gear (203) are arranged in an annular shape at equal intervals inside the sun gear (203); the planetary gears (205) are rotationally connected via a planetary frame (2051), and a central gear (206) is arranged between the plurality of planetary gears (205); and a servo drive motor (2061) connected to the central gear (206) is arranged on the connection auxiliary frame (201); Wherein, a tool head fixture (2052) is arranged on the bottom surface of the planetary gear (205), and a grinding tool head (2053) is clamped on the tool head fixture (2052).

3. A high-speed subtractive manufacturing device according to claim 2, characterized in that: The two opposing transmission platforms (7) are meshingly connected, and the two opposing transmission platforms (7) are meshingly transmitted in opposite directions, so that the corresponding driving grooves (701) distributed on the two opposing transmission platforms (7) overlap intermittently, forming an intermittent center hole grinding and feeding structure that controls the basic rotating shaft seat (8) to perform a one-way circular rotation movement in an "8" shape to form a sequential advance.

4. A high-speed subtractive manufacturing device according to claim 3, characterized in that: The basic rotating shaft seat (8) is symmetrically provided with guide blocks (802) on both radial sides; wherein the guide blocks (802) are in a triangular structure, wherein a honeycomb-shaped complex elastic block (8021) is provided inside the guide blocks (802).

5. A high-speed subtractive manufacturing device according to claim 4, characterized in that: The basic rotating shaft seat (8) is connected to the fixed component (13) via a connecting shaft (15), and a ratchet connection is formed between the connecting shaft (15) and the basic rotating shaft seat (8), wherein the high end of the connecting shaft (15) is provided with meshing teeth (1501) distributed in an annular manner with equal spacing.

6. A high-speed subtractive manufacturing device according to claim 5, characterized in that: The sealing and opening component (9) comprises a sealing and opening toothed ring (901) with an arc-shaped structure; wherein the sealing and opening toothed ring (901) is meshedly connected with the adjustment component (11); wherein a plurality of plug-in shafts (9011) are sequentially arranged on the upper surface of the sealing and opening toothed ring (901); A lifting arc block (902) is provided above the sealing and opening toothed ring (901) through a plug-in shaft (9011). Furthermore, the lifting arc block (902) is threadedly connected to the loading processing platform (6); A lifting seat (903) is arranged above the lifting arc block (902) and is plugged into and matched with the loading processing table (6). A plurality of lifting blocks (9031) are arranged on the upper surface of the lifting seat (903), and a number of accommodating grooves (603) matching the number of the lifting blocks (9031) are provided inside the loading processing table (6); and auxiliary teeth (604) are hingedly arranged inside the accommodating grooves (603).

7. A high-speed subtractive manufacturing device according to claim 6, characterized in that: The adjusting component (11) drives the sealing and opening tooth ring (901) to rotate, causing the lifting arc block (902) to rotate synchronously through the plug-in shaft (9011), and the lifting arc block (902) is threadedly connected to the loading processing table (6), causing the lifting arc block (902) to rise and / or fall, causing the lifting seat (903) to contact and / or separate from the auxiliary teeth (604), causing the auxiliary teeth (604) and the meshing teeth (1501) to be located on the same horizontal line and / or rotated offset, causing the auxiliary teeth (604) to mesh with the meshing teeth (1501).

8. A high-speed subtractive manufacturing device according to claim 7, characterized in that: The driving assembly (10) comprises an auxiliary servo motor (1001) arranged on the side of the feeding displacement ring groove (602) and an auxiliary gear arranged at the output end of the auxiliary servo motor (1001).

9. A high-speed subtractive manufacturing device according to claim 8, characterized in that: The adjustment component (11) comprises an adjustment motor (1101) arranged on the side of the machining annular groove (601) and an adjustment gear (1102) arranged at the output end of the adjustment motor (1101).

10. A subtractive manufacturing method for a high-speed subtractive manufacturing device according to claim 9, characterized in that: The following steps are involved: S100, external connection setting: opening the external connection window of the operating machine (1) by means of a push rod, so that the loading and unloading device can enter the material reduction operation chamber to perform upper and lower operations; S200, batch subtractive operation: S201, if the inner wall of the valve guide is subjected to material reduction grinding; First, the power output of the servo drive motor (2061) causes the central gear (206) to rotate, and the single central gear (206) synchronously drives the plurality of planetary gears (205) to rotate, and based on the start of the start-stop servo motor (2041), the movement of the start-stop gear (204) is synchronously controlled. During the rotation of the start-stop gear (204), the sun gear (203) is synchronously rotated so that the planetary carrier (2051) does not rotate as a whole, and then the auxiliary servo motor (1001) drives the auxiliary gear in the opposite direction to intermittently drive the opposite transmission platform (7) to rotate, and at the same time, the connecting shaft ( 15) is in a ratchet meshing and locking state with the basic rotating shaft seat (8), and then the basic rotating shaft seat (8), the fixing component (13) and the connecting shaft (15) are integrally rotated in an "8" shape, and the fixing component (13) is relatively locked to clamp the outer wall of the valve guide placed on the loading and unloading device, and then the basic rotating shaft seat (8) is driven by intermittent 120-degree rotation to enable the basic rotating shaft seat (8) to load materials in a one-way sequential manner; and then when the valve guide moves to the corresponding position, the stroke of the lifting and lowering adjustment cylinder (5) is operated to cause the grinding head (2053) to descend and contact the inner wall of the valve guide to achieve material reduction; S202, if the circumferential surface of the outer wall of the valve guide is subjected to material reduction grinding; The auxiliary servo motor (1001) drives the auxiliary gear relative to the forward direction to intermittently drive the counter transmission platform (7) to rotate, and at the same time, the connecting shaft (15) and the basic rotating shaft seat (8) are in a ratchet non-engaged state, and then the basic rotating shaft seat (8), the fixed component (13) and the connecting shaft (15) are rotated and displaced in an "8" shape as a whole, and the fixed component (13) is relatively unfolded to clamp the valve guide placed in the loading and unloading device, and then the basic rotating shaft seat (8) is driven by intermittent 120-degree rotation to load the material in a unidirectional sequential manner; until multiple basic rotating shaft seats (8) are synchronously located in the loading displacement ring groove ( 602), and then when the valve guide moves to the corresponding position, it stops rotating and moving, and then the sealing and opening tooth ring (901) located at the position is synchronously rotated and driven by the two adjustment components (11) to rotate and synchronously drive the lifting arc block (902) to rotate through the plug-in shaft (9011), and the lifting arc block (902) is threadedly connected with the feeding processing table (6), so that the lifting seat (903) is lifted and adjusted as a whole, and the lifting block (9031) is used to squeeze and rotate the auxiliary tooth (604). At this time, the sealing and opening tooth ring (901) is rotated and adjusted, and then the auxiliary servo motor (1001) is used again. ) is driven, so that the multiple basic rotating shaft seats (8) are synchronously located in the processing annular groove (601), and then the sealing and opening toothed ring (901) located in the processing annular groove (601) is synchronously rotated and driven by the adjustment component (11) to annularly close the processing annular groove (601), and then the power output of the servo drive motor (2061) causes the central gear (206) to rotate, and the multiple planetary gears (205) are synchronously driven to rotate by the single central gear (206), and the movement of the start-stop gear (204) is synchronously controlled based on the locking of the start-stop servo motor (2041), so that the sun gear (203) does not rotate. The planet carrier (2051) is rotated as a whole, and the grinding cutter head (2053) is lowered to contact a point on the circumferential surface of the outer wall of the valve guide by the stroke operation of the lifting and adjusting oil cylinder (5), and the auxiliary servo motor (1001) drives the counter transmission platform (7) to rotate at a rotation speed that matches the orbital rotation speed of the planet carrier (2051), and the connecting shaft (15) and the basic rotating shaft seat (8) are in a ratchet rotation state, so that the meshing teeth (1501) of the connecting shaft (15) and the auxiliary teeth (604) are meshed and transmitted, so that the valve guide on the fixed component (13) is synchronously rotated to achieve the work of grinding and reducing the material of the circumferential surface of the outer wall of the valve guide; S300, cleaning work; the titanium metal dust after grinding is adsorbed by an external dust suction device.

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