Powder metallurgy method for gear production and production device
By designing a gear production device, using the cooperation of multiple plug blocks and cylinders, repeated stamping and forming of the gear tooth surface and root is achieved, solving the problem of insufficient molding density in the prior art, and achieving high density molding of the gear.
Patent Information
- Application Number
- CN202411957770.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-03-28
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing powder metallurgy method is difficult to repeatedly stamp the tooth surface and root of the powder raw material forming gear, resulting in insufficient densification of the tooth of the forming gear.
A gear production device is designed, including a base frame, a base frame, a fence, a cylinder, a plug block, a stamping plate, a bent frame, a slide rod and a middle plate. By adding powder raw materials in batches and using the combination of multiple plug blocks and a cylinder, the repeated stamping and forming of the gear is achieved.
The dense molding of the gear tooth surface and root is achieved, ensuring the denseness and sufficient molding of the gear, and facilitating subsequent sintering.
Smart Images
Figure CN119703074A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of gear powder metallurgy processing, and more specifically to a powder metallurgy method and a production device for gear production. Background Art
[0002] Powder metallurgy is a process technology that produces metal powder or uses metal powder (or a mixture of metal powder and non-metallic powder) as raw material, and then forms and sinters it to manufacture metal materials, composite materials and various types of products. The advantage of powder metallurgy is that it can produce metal composite materials with simple shapes and structures such as heat dissipation substrates at a lower cost. Gears refer to mechanical components with teeth on the rim that can continuously mesh to transmit motion and power. When powder metallurgy is used to form gears during production, a fixed amount of raw materials is added once and the gears are formed by stamping with a predetermined stamping force. However, when powder metallurgy is used to produce gears, the tooth surface and tooth root of the gears formed by powder raw materials cannot be repeatedly stamped to ensure the density of the teeth of the formed gears. Summary of the invention
[0003] In order to improve the deficiencies of the prior art, the present invention provides a powder metallurgy method and a production device for gear production, which can repeatedly punch the tooth surface and tooth root of the gear formed by powder raw materials to ensure the density of the teeth of the formed gear.
[0004] The technical solution adopted by the present invention to solve its technical problem is:
[0005] A gear production device comprises a base frame and a bottom plate fixedly connected to the base frame, a surrounding frame fixedly connected to the bottom plate, a plurality of extension frames fixedly connected to the outer wall of the surrounding frame, a cylinder I fixedly connected to each extension frame, a plug fixedly connected to the cylinder rod of each cylinder I with a plug slidably connected to the surrounding frame, a guide frame fixedly connected to the surrounding frame, a stamping plate slidably connected to the guide frame, a plurality of bent frames fixedly connected to the stamping plate, each bent frame slidably connected to a sliding rod, the plurality of sliding rods fixedly connected to a middle plate, and a coupling plate fixedly connected to the middle plate.
[0006] Furthermore, a column tube is threadedly connected to the middle portion of the base plate.
[0007] Furthermore, each of the sliding rods is sleeved with a spring arranged between the middle plate and the corresponding bent frame.
[0008] Furthermore, two middle frames are fixedly connected to some of the multiple bent frames, and pressure wheels for pressing down the middle plate are rotatably connected to the two middle frames.
[0009] Further, according to the above-mentioned gear production device, a powder metallurgy method for producing gears is used, and the powder metallurgy method includes the following steps:
[0010] Step 1: Fully crush the raw materials for gear production and select qualified powder raw materials;
[0011] Step 2: Add the powder raw materials into the enclosure frame in batches, and after each addition of the powder raw materials, drive the stamping plate to rise and fall to drive the middle plate to stamp the powder raw materials into shape;
[0012] Step 3: driving multiple plugs to reciprocate and punch the tooth surface and tooth root of the gear;
[0013] Step 4: Drive the middle plate to lift and press the powder raw material. After the gear is formed, the gear is cut and sintered.
[0014] The beneficial effects of the powder metallurgy method and production device for gear production of the present invention are: the tooth surface and tooth root of the gear formed by powder raw materials can be repeatedly punched to ensure the density of the teeth of the formed gear; the powder raw materials added in batches can be reciprocated to ensure the density of the formed gear; and the gear with a through hole in the middle can be formed by adjusting the height of the column tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0016] Figure 1 A schematic diagram of the structure of a device for producing gears;
[0017] Figure 2 for Figure 1 a front view of the structure shown;
[0018] Figure 3 It is a schematic diagram of the structure for loading powder raw materials;
[0019] Figure 4 for Figure 3 a top view of the structure shown;
[0020] Figure 5 The structural diagram for driving the punching plate to rise and fall;
[0021] Figure 6 The structural diagram for driving the middle plate to lift up and down;
[0022] Figure 7 It is the structural schematic diagram of the middle plate;
[0023] Figure 8 for Figure 7 A schematic diagram of the structure in another direction is shown.
[0024] In the figure: base frame 11; base plate 12; column tube 13; surrounding frame 14; extension frame 15; guide frame 16; cylinder I 21; plug block 22; baffle 23; stamping plate 31; screw rod 32; bending frame 33; middle frame 34; pressure wheel 35; middle plate 41; slide rod 42; spring 43; coupling plate 44. DETAILED DESCRIPTION
[0025] refer to Figure 1 , 2 , 3, 4, 5 and 6, detail embodiments of producing gears:
[0026] A gear production device comprises a base frame 11 and a bottom plate 12 fixedly connected to the base frame 11, a surrounding frame 14 fixedly connected to the bottom plate 12, a plurality of extension frames 15 fixedly connected to the outer wall of the surrounding frame 14, a cylinder Ⅰ 21 fixedly connected to each extension frame 15, a plug 22 slidably connected to the surrounding frame 14 fixedly connected to the cylinder rod of each cylinder Ⅰ 21, so that the plurality of plugs 22 extend into the surrounding frame 14 for forming tooth surfaces and tooth roots, and the surrounding frame 14 is used to form The bottom plate 12 is used to form the end face of the gear. The surrounding frame 14 is fixedly connected with a guide frame 16. The guide frame 16 is slidably connected with a stamping plate 31. The guide frame 16 is used to guide the stamping plate 31 to ensure the stable sliding of the stamping plate 31. The stamping plate 31 is fixedly connected with a plurality of bent frames 33. Each bent frame 33 is slidably connected with a slide bar 42. The plurality of slide bars 42 are fixedly connected with the middle plate 41. The middle plate 41 is fixedly connected with a coupling plate 44, so that When the stamping plate 31 is lifted or lowered, it drives the bending frame 33 to slide, and the bending frame 33 drives multiple sliding rods 42 to lift or lower, and the sliding rods 42 drive the middle plate 41 to lift or lower, so as to realize the stamping of the powder raw material in the lower frame 14, so as to realize the molding of the powder raw material, add the powder raw material in batches and stamp the powder raw material multiple times after adding the powder raw material, so as to ensure that the powder raw material added each time is compacted and fine gears, start multiple cylinders Ⅰ21, and the cylinder rods of multiple cylinders Ⅰ21 drive multiple plugs 22 to slide, and multiple plugs 22 stamp the powder raw material to ensure that the tooth surface and tooth root of the molded gear are more dense, and to ensure that the molded gear is fully molded, so as to facilitate the subsequent gear sintering, the stamping plate 31 is stepped and can fully mold and position the gear after stamping the powder raw material, and at the same time, the coupling plate 44 can slide after the stamping plate 31 slides, and the powder raw material is stamped by the relative sliding of the coupling plate 44 to realize the powder metallurgy production molding of the gear.
[0027] refer to Figure 1 and 2 , detailed description of the embodiment of producing a gear with a through hole in the middle:
[0028] The middle part of the base plate 12 is threadedly connected with a column tube 13. When a gear with a through hole in the middle part needs to be produced, the column tube 13 is rotated to spirally rotate and lift in the axial direction, and the column tube 13 is lifted and lowered until the upper end surface coincides with the upper end surfaces of multiple plug blocks 22, so that the gear can be formed in conjunction with the stamping of powder raw materials.
[0029] refer to Figure 5 , 6 7, detailed description of the embodiment of stamping powder raw material molding:
[0030] Each of the slide bars 42 is sleeved with a spring 43 disposed between the middle plate 41 and the corresponding curved frame 33. Two middle frames 34 are fixedly connected to some of the plurality of curved frames 33, and the two middle frames 34 are rotatably connected with a pressing wheel 35 for pressing down the middle plate 41. The pressing wheel 35 is fixedly connected to the output shaft of the reduction motor I, and the reduction motor I is fixedly connected to the upper part of one of the middle frames 34. The reduction motor I is started, and the reduction motor I drives the pressing wheel 35 to rotate. The pressing wheel 35 rotates and pushes the middle plate 41 downward to perform stamping, thereby stamping the powder raw material for gear production, and the gear is produced. At the same time, the plurality of springs 43 are compressed, and when the pressing wheel 35 loses the downward pressure on the middle plate 41, the plurality of compressed springs 43 push the middle plate 41 to reset, thereby preparing for the next time when the pressing wheel 35 pushes the middle plate 41 to stamp the raw material.
[0031] refer to Figure 3 , an embodiment of positioning the tooth surface of a stamped gear is described in detail:
[0032] A baffle 23 is fixedly connected to the end of each of the plug blocks 22, so that when the multiple plug blocks 22 slide, the multiple baffle plates 23 are used to position the multiple baffle plates 23 when they slide to punch the powder raw materials, thereby achieving sufficient punching of the powder raw materials when the multiple plug blocks 22 slide, and achieving the punching of the formed tooth surfaces and tooth roots.
[0033] refer to Figure 1 and 5 , the embodiment of driving the punching plate 31 to rise and fall is described in detail:
[0034] The stamping plate 31 is fixedly connected with a plurality of screw sleeves, and a screw 32 is rotatably connected to the guide frame 16 to drive the plurality of screw sleeves to drive the stamping plate 31 to rise and fall. The plurality of screws 32 are respectively fixedly connected to the output shafts of their respective corresponding reduction motors II, and the plurality of reduction motors II are fixedly connected to the guide frame 16. The plurality of reduction motors II are started, and the plurality of reduction motors II drive the screw 32 to rotate. The screw 32 drives the screw sleeves through threads to drive the stamping plate 31 to rise and fall. The stamping plate 31 can be coupled with the surrounding frame 14 and drive the middle plate 41 to adjust its position, so that the high-frequency vibration of the middle plate 41 can be driven by the pressing wheel 35 to achieve full forming of the gears by stamping the powder raw material.
[0035] refer to Figure 3 , 7 and 8, which describe in detail an embodiment of stamping powder raw materials:
[0036] The outer contour of the coupling plate 44 is coupled with the inner contour of the surrounding frame 14, so that when the middle plate 41 slides, the coupling plate 44 is driven to slide back and forth to punch the space for forming the gear in the surrounding frame 14, thereby realizing the forming of the gear.
[0037] refer to Figure 6 , 7 8, detailed description of the embodiment of powder raw material molding:
[0038] The stamping plate 31 is stepped, and the lower part of the stamping plate 31 is coupled with the surrounding frame 14, so that the stamping plate 31 can be positioned by coupling with the surrounding frame 14, thereby ensuring that the coupling plate 44 is coupled with the cavity of the molded gear in the surrounding frame 14, ensuring that the coupling plate 44 fully stamps the powder raw material when sliding back and forth.
[0039] refer to Figure 6 , an embodiment in which the pressing wheel 35 rotates and the lower pressing middle plate 41 slides is described in detail:
[0040] The pressing wheel 35 is a cam or an elliptical wheel, so that when the pressing wheel 35 rotates, the center plate 41 is pressed by changing its diameter, so that the center plate 41 drives the coupling plate 44 to slide back and forth to press the powder raw material and realize the production of the gear.
[0041] refer to Figure 1 , 2 , 3 and 6, detail embodiments of the powder metallurgy method for gear production:
[0042] According to the above-mentioned powder metallurgy method for producing gears by a gear production device, the powder metallurgy method comprises the following steps:
[0043] Step 1: Fully crush the raw materials for gear production and select qualified powder raw materials to achieve the particle size of the raw materials for gear production;
[0044] Step 2: Add the powder raw materials into the enclosure 14 in batches, and after each addition of the powder raw materials, drive the punching plate 31 to move up and down to drive the middle plate 41 to punch the powder raw materials into shape, thereby achieving the molding of the powder raw materials;
[0045] Step 3: driving multiple plugs 22 to reciprocate and punch the tooth surface and tooth root of the formed gear to ensure the tightness of the tooth surface and tooth root of the formed gear;
[0046] Step 4: Drive the middle plate 41 up and down to punch the powder raw material. After the gear is formed, the gear is cut and sintered to complete the production of the gear.
Claims
1. A gear production device, characterized in that: The invention comprises a base frame (11) and a base plate (12) fixedly connected to the base frame (11); a surrounding frame (14) is fixedly connected to the base plate (12); a plurality of extension frames (15) are fixedly connected to the outer wall of the surrounding frame (14); a cylinder I (21) is fixedly connected to each extension frame (15); a plug (22) slidably connected to the surrounding frame (14) is fixedly connected to the cylinder rod of each cylinder I (21); a guide frame (16) is fixedly connected to the surrounding frame (14); a stamping plate (31) is slidably connected to the guide frame (16); a plurality of bent frames (33) are fixedly connected to the stamping plate (31); a sliding rod (42) is slidably connected to each bent frame (33); the plurality of sliding rods (42) are fixedly connected to the middle plate (41); and a coupling plate (44) is fixedly connected to the middle plate (41).
2. A gear production device according to claim 1, characterized in that: The middle part of the base plate (12) is threadedly connected with a column tube (13).
3. A gear production device according to claim 1, characterized in that: Each of the slide bars (42) is sleeved with a spring (43) disposed between the middle plate (41) and the corresponding bent frame (33).
4. A gear production device according to claim 1, characterized in that: Two middle frames (34) are fixedly connected to some of the bent frames (33) among the plurality of bent frames (33), and the two middle frames (34) are rotatably connected to a pressing wheel (35) for pressing down the middle plate (41).
5. The gear production device according to claim 1, characterized in that: A baffle (23) is fixedly connected to the end of each plug block (22).
6. A gear production device according to claim 1, characterized in that: A plurality of screw sleeves are fixedly connected to the stamping plate (31), and a screw (32) is rotatably connected to the guide frame (16) for driving the plurality of screw sleeves to drive the stamping plate (31) to move up and down.
7. The gear production device according to claim 1, characterized in that: The outer contour of the coupling plate (44) is coupled to the inner contour of the surrounding frame (14).
8. The gear production device according to claim 1, characterized in that: The stamping plate (31) is stepped, and the lower part of the stamping plate (31) is coupled to the surrounding frame (14).
9. The gear production device according to claim 4, characterized in that: The pressure wheel (35) is a cam or an elliptical wheel.
10. A powder metallurgy method for producing gears by a gear production device according to any one of claims 1 to 9, characterized in that: The powder metallurgy method comprises the following steps: Step 1: Fully crush the raw materials for gear production and select qualified powder raw materials; Step 2: Add the powder raw materials into the enclosure (14) in batches, and after each addition of the powder raw materials, drive the punching plate (31) to move up and down to drive the middle plate (41) to punch the powder raw materials into shape; Step 3: driving a plurality of plugs (22) to reciprocate and punch the tooth surfaces and tooth roots of the gears; Step 4: driving the middle plate (41) to move up and down to press the powder raw material, and after the gear is formed, the gear is cut and sintered.