Finish grinder for quick removal of powder metallurgy parts

Abstract

The application discloses a finishing grinder for conveniently taking out powder metallurgy parts, and relates to the technical field of grinders. After grinding, the existing grinder needs manual taking out of the parts after pressure relief of the pressure device. The parts are placed in the equipment and can only be taken out one by one, and cannot be taken out in multiple groups at a time. The taking out operation is inconvenient and relatively inefficient. The application uses the magnetic ring piece on the upper end of the taking-out disc and the butt joint disc to magnetically attract the parts at the corresponding positions, and then manually strips the parts. A scraping device can also be separately installed. The scraper on the upper end of the scraping device is used to scrape the parts on the upper end, and then the parts are scraped off. Whether manually or by the device, the efficiency is faster than that of the traditional one-by-one taking out in the grinding bin.

Description

Technical Field

[0001] This invention relates to the field of grinding machine technology, specifically to a precision grinding machine for facilitating the rapid removal of powder metallurgy parts. Background Technology

[0002] A grinding machine is a grinding machine that uses abrasive-coated or embedded grinding tools to grind the surface of a workpiece. It is mainly used for grinding high-precision flat surfaces, internal and external cylindrical surfaces, conical surfaces, spherical surfaces, threaded surfaces, and other profiled surfaces of workpieces. The main types of grinding machines include disc grinding machines, rotary grinding machines, and various special-purpose grinding machines. Grinding machines employ a stepless speed regulation system, allowing easy adjustment to the grinding speed suitable for various parts. They utilize an electro-pneumatic proportional valve closed-loop feedback pressure control, allowing independent adjustment of the pressure device. The upper disc is equipped with a slow-descent function to effectively prevent breakage of thin and brittle workpieces. In the processing of metallurgical metal parts, precision grinding machines are also used to grind parts, with the grinding process gradually refining from coarse grinding to fine grinding.

[0003] In response, Chinese patent application number CN110788737A discloses a grinding machine and a method for peeling off a workpiece. The grinding machine includes: a lower grinding disc, a lower grinding disc motor for driving the lower grinding disc, an upper grinding disc located above the lower grinding disc, and an upper grinding disc motor for driving the upper grinding disc. An upper grinding disc lifting mechanism is connected to the upper grinding disc, which lifts the upper grinding disc so that the workpiece adhered to the upper grinding disc is moved away from the bottom of the upper grinding disc, creating a preset distance between the workpiece and the lower grinding disc; the preset distance is less than the height of the carrier disc on the lower grinding disc that holds the workpiece. When peeling off the workpiece adhered to the upper grinding disc, the relative movement of the upper grinding disc and the carrier disc is controlled, thus peeling off the workpiece. This not only improves work efficiency and avoids accidents during manual operation, but also saves time and effort.

[0004] In response, Chinese patent application number CN113001390B discloses a magnetic polishing machine for precision workpiece grinding, comprising a base and a controller. A polishing barrel is positioned above the base, and a rotating disk is rotatably connected within the inner cavity of the base. Magnetic poles are fixed on the rotating disk, and a motor is rotatably connected to the center of the rotating disk. Guide grooves are formed at the bottom of both the base and the polishing barrel. A support rod is movably sleeved in the middle of the guide groove, and a base plate is fixedly connected to the top of the support rod. A permanent magnet is disposed inside the base plate. This invention utilizes the magnetic force between multiple magnetic poles and the permanent magnet. During the rotation of the magnetic poles, the permanent magnet also rotates, thereby causing the base plate and the parts on it to rotate. This ensures that the sides of the parts are directly facing the direction of the steel needle impact, effectively improving the uniformity of the steel needle polishing on the sides of the parts.

[0005] Currently, after the metallurgical demolding process, the surfaces of powder metallurgy manufactured parts need to be ground to remove uneven parts. This grinding process is repeated to produce parts that meet the process standards. However, after the pressure device is released from the existing grinding machine, the parts need to be manually removed. Since the parts are inside the equipment, they can only be removed one by one, not multiple sets at once. This removal operation is inconvenient and relatively inefficient.

[0006] To address the aforementioned issues, a precision grinding machine is proposed that facilitates the rapid removal of powder metallurgy parts. Summary of the Invention

[0007] The purpose of this invention is to provide a precision grinding machine that facilitates the rapid removal of powder metallurgy parts, thus solving the problems in the prior art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a precision grinding machine for facilitating the rapid removal of powder metallurgy parts, comprising a precision grinding chamber, a grinding platform connected to the top of the precision grinding chamber, a support column installed at the top of the grinding platform, a hydraulic adjusting rod installed on one side of the top of the support column, a pressure plate connected to the bottom end of the hydraulic adjusting rod, a visual display screen installed at the upper end of the support column, a sliding groove column connected to one side of the precision grinding chamber, a support spring installed inside the precision grinding chamber, a connecting crank rod embedded inside the sliding groove column, a square rod connected to the side of the connecting crank rod away from the sliding groove column, a movable long groove opened at the upper end of the square rod, a movable block embedded inside the movable long groove, a positioning shaft embedded inside the movable block, one end of the positioning shaft connected to one side of the grinding disc, a take-up disc fixedly connected to the back side of the grinding disc, a magnetic ring plate covering the upper end of the take-up disc, and a mating disc connected to the upper end of the magnetic ring plate;

[0009] The grinding platform has a surrounding toothed ring embedded inside, and an active drive shaft is connected inside the surrounding toothed ring. The bottom end of the active drive shaft passes through the top of the fine grinding chamber and extends into the interior of the fine grinding chamber. A planetary toothed ring meshes between the active drive shaft and the surrounding toothed ring.

[0010] Preferably, a pressure application plate is fixedly connected to the bottom end of the pressure plate, the pressure application plate is located directly above the grinding disc, and a downward positioning slide rod is embedded inside both the pressure application plate and the pressure plate.

[0011] Preferably, the pressing positioning slide rod and the active drive shaft are rotatably connected, the pressing positioning slide rod passes through the interior of the picking plate, the grinding plate and the pressure application plate respectively, and the pressing positioning slide rod is slidably connected to the picking plate, the grinding plate and the pressure application plate in the longitudinal direction respectively.

[0012] Preferably, the surrounding toothed ring penetrates the interior of the grinding platform, and connecting clips are fixedly connected to both sides of the surrounding toothed ring. The connecting clips are embedded inside the grinding platform, and the top of the grinding platform is located on the outer wall of the surrounding toothed ring, surrounded by a limiting ring. A lifting retaining ring is fixedly connected to the ground of the grinding platform.

[0013] Preferably, the lifting retaining ring is wrapped around the upper end of the surrounding toothed ring, and both the upper and lower ends of the connecting clamp are fixedly connected to the outer wall of the surrounding toothed ring. The outer wall of the connecting clamp is attached to the inner wall of the grinding platform with the help of a rubber anti-slip pad.

[0014] Preferably, the movable block and the movable groove are slidably connected, and both sets of movable blocks are rotatably connected to positioning shafts inside, and the two sets of positioning shafts are fixedly connected to the two sides of the grinding disc.

[0015] Preferably, the upper end of the magnetic ring plate has three sets of mating discs, the angle between the three sets of mating discs and the center of the magnetic ring plate is consistent, and the angle between the three sets of mating discs and the angle between the three sets of planetary gear rings is also consistent.

[0016] Preferably, a motor is fixedly connected to the bottom end of the active drive shaft, and the output end of the motor is connected to the active drive shaft. The retaining teeth on the outer wall of the active drive shaft mesh with the retaining teeth on the outer wall of the planetary gear ring, so the retaining teeth surrounding the upper end of the gear ring and the planetary gear ring also mesh.

[0017] Preferably, the upper end of the planetary gear ring has a through groove, and the through groove is also opened around the planetary gear ring. The surface of the grinding platform is wrapped with a grinding disc in the part surrounding the gear ring, and the grinding disc is annular. The planetary gear ring is placed on the upper end of the grinding disc.

[0018] Preferably, the end of the connecting crank is fixedly connected to the upper end of the support spring, and the grinding disc and the picking disc are supported by the square rod, the connecting crank, and the sliding groove column.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. The precision grinding machine provided by this invention facilitates the rapid removal of powder metallurgy parts. By constructing a one-time part removal structure, after the pressure device is depressurized after grinding, multiple sets of parts are processed uniformly using magnetic force, resulting in higher processing efficiency. The grinding disc is flipped so that the surface of the removal disc is facing down. The magnetic ring and mating disc at the top of the removal disc magnetically attract the parts at their corresponding positions. The parts are then peeled off manually. Alternatively, a scraping device can be installed separately. The scraper at the top of the scraping device scrapes across the magnetic ring to remove the parts. Whether done manually or by a device, the efficiency is significantly improved compared to the traditional method of directly removing parts one by one in the grinding chamber. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the fine grinding chamber and grinding platform of the present invention;

[0024] Figure 4 This is a schematic diagram of the connection structure between the square rod and the grinding disc of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the disk and magnetic ring plate of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the present invention in the flipped state of the tray;

[0027] Figure 7 This is a schematic diagram of the active drive shaft and planetary gear ring of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the toothed ring and the lifting retaining ring of the present invention;

[0029] Figure 9 This is a schematic diagram of the active drive shaft and planetary gear ring of the present invention;

[0030] Figure 10 This is a schematic diagram of the disassembled structure of the surrounding gear ring and the active drive shaft of the present invention.

[0031] In the diagram: 1. Grinding chamber; 2. Grinding platform; 3. Support column; 4. Visual display screen; 5. Hydraulic adjusting rod; 6. Pressure plate; 7. Limiting ring block; 8. Connecting clamp; 9. Sliding groove column; 10. Connecting crank rod; 11. Square rod; 12. Pressure application plate; 13. Grinding disc; 14. Downward positioning slide rod; 15. Enclosing toothed ring; 16. Movable long groove; 17. Movable block; 18. Positioning shaft rod; 19. Support spring; 20. Pick-up disc; 21. Magnetic ring plate; 22. Connecting disc; 23. Active drive shaft; 24. Planetary toothed ring; 25. Lifting retaining ring. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings.

[0034] Combination Figures 1-10 The present invention relates to a precision grinding machine for quick removal of powder metallurgy parts, comprising a precision grinding chamber 1, a grinding platform 2 connected to the top of the precision grinding chamber 1, a support column 3 mounted on the top of the grinding platform 2, a hydraulic adjusting rod 5 mounted on one side of the top of the support column 3, a pressure plate 6 connected to the bottom end of the hydraulic adjusting rod 5, a visual display screen 4 mounted on the upper end of the support column 3, a sliding groove column 9 connected to one side of the precision grinding chamber 1, a support spring 19 installed inside the precision grinding chamber 1, a connecting crank rod 10 embedded inside the sliding groove column 9, and the end of the connecting crank rod 10 fixedly connected to the upper end of the support spring 19. The grinding disc 13 and the removal disc 20 are respectively... The grinding disc 13 is supported by rod 11, connecting crank rod 10 and sliding groove column 9. In order to ensure that the grinding disc 13 can descend normally when pressed down, the sliding groove column 9 and connecting crank rod 10 are connected by sliding. The hydraulic adjusting rod 5 and pressure plate 6 drive the pressure application plate 12 to descend. After descending, the lower end of the grinding disc 13 is pushed to fit against the upper end of the component. The descent of the grinding disc 13 is aided by the descent of the connecting crank rod 10. When the connecting crank rod 10 descends, it will compress the support spring 19 inside the sliding groove column 9. After the pressure application plate 12 rises, the support spring 19 needs to be reset. The reset of the support spring 19 pushes the connecting crank rod 10 and the grinding disc 13 to rise.

[0035] A square rod 11 is connected to the side of the connecting crank rod 10 away from the sliding groove column 9. A movable long groove 16 is formed at the upper end of the square rod 11. A movable block 17 is embedded inside the movable long groove 16. The movable block 17 and the movable long groove 16 are slidably connected. Positioning shafts 18 are rotatably connected inside both sets of movable blocks 17. The two sets of positioning shafts 18 are fixedly connected to both sides of the grinding disc 13. During the grinding of the parts, the grinding disc 13 provides auxiliary grinding. Therefore, during the grinding stage, the grinding disc 13 adheres to the upper surface of the parts, and the parts are ground on the grinding platform 2. The end-encircling toothed ring 15 rotates internally, its surface contacting the grinding disc 13 for grinding. After grinding, it is picked up by the magnetic ring 21 and the mating disc 22 at the upper end of the picking disc 20. Therefore, it is necessary to switch the positions between the grinding disc 13 and the picking disc 20. The switching is achieved by flipping the picking disc 20. To facilitate the smooth switching between the grinding disc 13 and the picking disc 20, the movable block 17 slides inside the movable long groove 16. When it slides to the left end of the movable long groove 16, the flipping of the grinding disc 13 is not obstructed. By rotating the grinding disc 13... This causes the grinding disc 13 to rotate along the positioning shaft 18. After rotation, the grinding disc 13 is moved to the rightmost end of the movable long groove 16. Then, the take-up disc 20 descends, causing the take-up disc 20 and the magnetic ring 21 to adhere to the upper end of the planetary gear ring 24. Then, under the magnetic attraction, the internally engaged parts of the planetary gear ring 24 are picked up. Then, the take-up disc 20 is scraped off directly, so that the upper parts can be uniformly processed. The movable block 17 has a positioning shaft 18 embedded inside, and one end of the positioning shaft 18 is connected to one side of the grinding disc 13. A pressure application plate 12 is fixedly connected to the bottom end of the pressure plate 6. The pressure application plate 12 is located directly above the grinding disc 13. A downward positioning slide rod 14 is embedded inside both the pressure application plate 12 and the pressure plate 6. The pressure application plate 12 and the grinding disc 13 are positioned by the downward positioning slide rod 14, so that the pressure application plate 12 and the grinding disc 13 move along a certain trajectory. A pick-up disc 20 is fixedly connected to one side of the back of the grinding disc 13. The upper end of the pick-up disc 20 is covered by a magnetic ring plate 21. The upper end of the magnetic ring plate 21 is connected to a mating disc 22.

[0036] A surrounding toothed ring 15 is embedded inside the grinding platform 2, penetrating the interior of the grinding platform 2. Connecting clips 8 are fixedly connected to both sides of the surrounding toothed ring 15, embedded within the grinding platform 2. A limiting ring 7 surrounds the outer wall of the surrounding toothed ring 15 at the top of the grinding platform 2. A lifting retaining ring 25 is fixedly connected to the ground of the grinding platform 2, wrapping around the upper end of the surrounding toothed ring 15. Both ends of the connecting clips 8 are fixedly connected to the outer wall of the surrounding toothed ring 15, and the outer wall of the connecting clips 8 is attached to the inner wall of the grinding platform 2 with the aid of rubber anti-slip pads. A drive shaft 23 is connected inside the surrounding toothed ring 15, and a motor is fixedly connected to the bottom end of the drive shaft 23. The output end of the motor is connected to the drive shaft 23. The teeth on the outer wall of shaft 23 mesh with the teeth on the outer wall of planetary gear ring 24, and the teeth surrounding the upper end of gear ring 15 and planetary gear ring 24 also mesh. The upper end of planetary gear ring 24 has a through groove, and the through groove is also opened around planetary gear ring 24. The surface of grinding platform 2 is wrapped with a grinding disc in the part inside surrounding gear ring 15, and the grinding disc is ring-shaped. Planetary gear ring 24 is placed on the upper end of the grinding disc. When grinding, the workpiece to be ground is placed in the through groove opened inside planetary gear ring 24. Planetary gear ring 24 rotates under the drive of drive shaft 23. After rotation, it comes into contact with the grinding disc. In addition, the top of planetary gear ring 24 also comes into contact with grinding disc 13 for grinding. After rotation, the upper and lower end faces are ground.

[0037] The downward positioning slide rod 14 is rotatably connected to the active drive shaft 23. The downward positioning slide rod 14 passes through the interior of the pick-up plate 20, the grinding plate 13, and the pressure application plate 12, respectively. The downward positioning slide rod 14 is slidably connected to the pick-up plate 20, the grinding plate 13, and the pressure application plate 12 in the longitudinal direction. The bottom end of the active drive shaft 23 passes through the top end of the fine grinding chamber 1 and extends into the interior of the fine grinding chamber 1. A planetary gear ring 24 meshes between the active drive shaft 23 and the surrounding gear ring 15. Three sets of mating discs 22 are distributed on the upper end of the magnetic ring plate 21. The angle between the mating discs 22 and the center of the magnetic ring 21 remains consistent. The angles between the three mating discs 22 and the three planetary gear rings 24 also remain consistent. During grinding, the upper surface of the part is pressed by the grinding disc 13. After pressing, the part rotates inside the surrounding gear ring 15. The rotation completes the grinding of both sides. After grinding, the grinding disc 13 is rotated. After rotation, the pick-up disc 20 contacts the part. Under the attraction of the magnetic ring 21 and the mating discs 22 at the upper end of the pick-up disc 20, the part is picked up after grinding.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision grinding machine for facilitating rapid removal of powder metallurgy parts, comprising a precision grinding chamber (1), characterized in that: The top of the fine grinding chamber (1) is connected to a grinding platform (2), and a support column (3) is installed on the top of the grinding platform (2). A hydraulic adjusting rod (5) is installed on one side of the top of the support column (3), and a pressure plate (6) is connected to the bottom of the hydraulic adjusting rod (5). A visual display screen (4) is also installed on the upper end of the support column (3). A sliding groove column (9) is connected to one side of the fine grinding chamber (1). A support spring (19) is installed inside the fine grinding chamber (1). A connecting crank rod (10) is embedded inside the sliding groove column (9). A square rod (11) is connected to the side of the curved rod (10) away from the sliding groove column (9). A movable long groove (16) is opened at the upper end of the square rod (11). A movable block (17) is embedded inside the movable long groove (16). A positioning shaft (18) is embedded inside the movable block (17). One end of the positioning shaft (18) is connected to one side of the grinding disc (13). A pick-up disc (20) is fixedly connected to one side of the back of the grinding disc (13). The upper end of the pick-up disc (20) is covered by a magnetic ring plate (21). A docking disc (22) is connected to the upper end of the magnetic ring plate (21). The grinding platform (2) has a surrounding toothed ring (15) embedded inside. The surrounding toothed ring (15) is connected to an active drive shaft (23). The bottom end of the active drive shaft (23) extends through the top of the fine grinding chamber (1) and into the interior of the fine grinding chamber (1). A planetary toothed ring (24) meshes between the active drive shaft (23) and the surrounding toothed ring (15). The movable block (17) and the movable long groove (16) are slidably connected. The interior of each of the two sets of movable blocks (17) is rotatably connected with a positioning shaft (18). The two sets of positioning shafts (18) are fixedly connected to the two sides of the grinding disc (13). Three sets of mating discs (22) are distributed at the upper end of the magnetic ring (21). The included angle between the three sets of mating discs (22) and the center of the magnetic ring (21) is consistent. The included angle between the three sets of mating discs (22) and the included angle between the three sets of planetary gear rings (24) is also consistent. The upper end of the planetary gear ring (24) has a through groove, and the through groove is also opened around the planetary gear ring (24). The surface of the grinding platform (2) is wrapped with a grinding disc in the part that surrounds the gear ring (15), and the grinding disc is ring-shaped. The planetary gear ring (24) is placed on the upper end of the grinding disc. The end of the connecting crank (10) is fixedly connected to the upper end of the support spring (19). The grinding disc (13) and the pick-up disc (20) are supported by the square rod (11), the connecting crank (10) and the sliding groove column (9).

2. The precision grinding machine for quick removal of powder metallurgy parts according to claim 1, characterized in that: The pressure plate (6) is fixedly connected to a pressure application plate (12) at its bottom end. The pressure application plate (12) is located directly above the grinding disc (13). The pressure application plate (12) and the pressure plate (6) are both embedded with a downward positioning slide rod (14).

3. The precision grinding machine for quick removal of powder metallurgy parts according to claim 2, characterized in that: The pressing positioning slide rod (14) is rotatably connected to the active drive shaft (23). The pressing positioning slide rod (14) passes through the interior of the picking plate (20), the grinding plate (13) and the pressure application plate (12). The pressing positioning slide rod (14) is slidably connected to the picking plate (20), the grinding plate (13) and the pressure application plate (12) in the longitudinal direction.

4. The precision grinding machine for quick removal of powder metallurgy parts according to claim 1, characterized in that: The surrounding toothed ring (15) penetrates the interior of the grinding platform (2). Connecting clips (8) are fixedly connected to both sides of the surrounding toothed ring (15). The connecting clips (8) are embedded in the interior of the grinding platform (2). The top of the grinding platform (2) is located on the outer wall of the surrounding toothed ring (15) and surrounds a limiting ring (7). A lifting ring (25) is fixedly connected to the ground of the grinding platform (2).

5. The finishing grinding machine for quick removal of powder metallurgy parts according to claim 4, characterized in that: The lifting ring (25) is wrapped around the upper end of the surrounding toothed ring (15), and the upper and lower ends of the connecting clip (8) are fixedly connected to the outer wall of the surrounding toothed ring (15). The outer wall of the connecting clip (8) is attached to the inner wall of the grinding platform (2) by means of a rubber anti-slip pad.

6. The precision grinding machine for quick removal of powder metallurgy parts according to claim 1, characterized in that: The bottom end of the active drive shaft (23) is fixedly connected to a motor, and the output end of the motor is connected to the active drive shaft (23). The locking teeth on the outer wall of the active drive shaft (23) and the locking teeth on the outer wall of the planetary gear ring (24) mesh with each other, so the locking teeth surrounding the upper end of the gear ring (15) and the planetary gear ring (24) also mesh.

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