A device for polishing the outer periphery of a gear of an automobile transmission

Abstract

The application discloses a kind of automobile gearbox gear outer periphery rotation polishing device, it is related to gear processing technical field, the present application includes operation platform, the upper end outer surface of operation platform is rotationally connected with support column in the position close to middle part, and rectangular hole is set in the outer surface of support column in the position close to top end;The present application is by setting limiting mechanism, after placing gear on the surface of support plate, opening electric push rod one, closing electric push rod two, electric push rod one is pushed support block upwards, until the inner surface of L-shaped limiting block is engaged with gear box, again opening two groups of electric push rod two, make two groups of electric push rod two synchronous speed limiting block movement, until electric push rod two cannot move, at this time, the center axis of gear and the center axis of support column coincide, can guarantee the stability of gear in the process of being polished, improve polishing precision.

Description

Technical Field

[0001] This invention relates to the field of gear processing technology, and in particular to a rotary grinding device for the outer circumference of automotive gearbox gears. Background Technology

[0002] The gearbox is mainly composed of shafts and gears. The lifespan of the gears determines the lifespan of the gearbox. The gearbox has several functions: changing the transmission ratio, expanding the range of torque and speed variation of the drive wheels to adapt to frequently changing driving conditions, and enabling the engine to operate under favorable conditions (higher power and lower fuel consumption).

[0003] Gears are important components in gearboxes, and their machining quality directly affects the vibration, noise, and reliability of the equipment assembly. Gear machining is a process that uses mechanical methods to obtain gears with specific structures and precision.

[0004] After gears are machined, they need to be ground. However, traditional grinding processes usually grind all the tooth surfaces of the gear at the same time, or only one side of the tooth at a time. The former can easily lead to excessive vibration frequency during the grinding process, which affects the grinding accuracy and reduces the service life of the grinding equipment and the gear. The latter requires separating the grinding equipment from the gear after grinding a set of teeth and then driving the gear to rotate before grinding again. This method can easily lead to large differences in different grinding positions of the same gear, and also increases the number of operation steps and labor intensity, reducing work efficiency. Summary of the Invention

[0005] The purpose of this invention is to address the problems of traditional grinding processes when grinding gear end faces. These processes typically involve grinding all tooth surfaces simultaneously or only one side of the tooth at a time. The former can lead to excessive vibration during the grinding process, affecting grinding accuracy and reducing the lifespan of the grinding equipment and gears. The latter requires separating the grinding equipment from the gear after grinding a set of teeth before rotating the gear for further grinding. This not only easily results in significant differences between different grinding positions on the same gear but also increases operational steps and labor intensity, reducing work efficiency. Therefore, this invention proposes a rotary grinding device for the outer circumference of automotive gearbox gears.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rotary grinding device for the outer circumference of an automotive gearbox, comprising an operating table, a support column rotatably connected to the upper outer surface of the operating table near the middle, a rectangular hole being formed on the outer surface of the support column near the top, and a support plate being fixedly connected to the outer surface of the support column below the rectangular hole, support rings being provided on both sides of the upper outer surface of the operating table, a connecting column being fixedly connected to the upper outer surface of the operating table inside the support rings, and a grinding mechanism being provided between the connecting column and the corresponding support ring, and a limiting mechanism for supporting the gear being provided inside the rectangular hole;

[0007] The limiting mechanism includes an electric push rod one, an electric push rod two, a limiting block, and a support block; an electric push rod one is provided at the bottom end of the inner surface of the rectangular hole, and one end of the electric push rod one is fixedly connected to the rectangular hole, and the other end is fixedly connected to the support block. Electric push rod two is provided on both outer surfaces of the support block, and one end of the electric push rod two is fixedly connected to the support block, and the other end is fixedly connected to the limiting block. The limiting block is L-shaped.

[0008] Furthermore, the grinding mechanism includes a fixed block, a movable hole, a fixed block, a fixed post one, and a fixed post two; the fixed block is sleeved on the outside of the connecting post, and the outer surface of the fixed block is provided with a movable hole at a position corresponding to the connecting post; a number of fixed posts one are fixedly connected at equal intervals on the outer surface of the fixed block.

[0009] Furthermore, two fixing posts are fixedly connected to the outer surfaces of the first fixing post on both sides away from the fixing block. One end of the second fixing post is fixedly connected to the first fixing post, and the other end is fixedly connected to a connecting plate. A grinding plate is fixedly connected to the outer surface of the connecting plate on the side away from the second fixing post.

[0010] Furthermore, a threaded collar is fixedly connected to the lower outer surface of the fixing block, and several sets of spiral patterns are equally spaced on the outer surface of the connecting column. The spiral patterns are distributed in an intermittent manner. The threaded collar is threadedly connected to the spiral patterns. The upper outer surface of the support ring is provided with an annular groove, and two sets of movable blocks are movably connected inside the annular groove.

[0011] Furthermore, a fixed rod is fixedly connected to the upper outer surface of one set of movable blocks, and an electric push rod three is fixedly connected to the upper outer surface of another set of movable blocks. One end of the electric push rod three is fixedly connected to one set of movable blocks, and the other end is fixedly connected to the fixed block. An installation cylinder is movably connected to the outer surface of the fixed rod, and the top end of the installation cylinder is fixedly connected to the fixed block.

[0012] Furthermore, an installation plate is provided on the upper outer surface of the operating table at one side of the support column, and an electric telescopic rod is provided on the outer surface of the installation plate near the support column. One end of the electric telescopic rod is fixedly connected to the installation plate, and the other end is fixedly connected to a clamping plate, which is U-shaped.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0014] In this invention, by setting a limiting mechanism, after the gear is placed on the surface of the support plate, the first electric push rod is turned on and the second electric push rod is turned off. The first electric push rod pushes the support block upward until the inner surface of the L-shaped limiting block engages with the gearbox. At this time, the two sets of second electric push rods are turned on again, so that the two sets of second electric push rods push the limiting block to move synchronously and at the same speed until the second electric push rod can no longer move. At this time, the central axis of the gear coincides with the central axis of the support column, which can ensure the stability of the gear during the grinding process and improve the grinding accuracy.

[0015] In this invention, a grinding mechanism is installed on both sides of the support column. The grinding plates on both sides of the gear are located between two adjacent sets of teeth. The electric push rod pulls the fixed block downwards, and the connecting plate drives the grinding plates to move up and down with the fixed block. During the downward movement of the fixed block, when the threaded collar separates from the helix, the grinding plates move with the fixed block and grind the surface of the teeth. When the threaded collar aligns with the helix and continues to move downwards, the threaded collar drives the fixed block to rotate. When the two sets of threaded collars move up and down in the same direction, their rotation directions are opposite, thereby driving the gear to rotate and thus grinding the next set of teeth. The grinding plates on both sides simultaneously grind the gear. Grinding is performed, thereby changing the grinding position of the gear without changing the position of the grinding mechanism, improving grinding accuracy and efficiency. At the same time, as the grinding plate rotates with the fixed block and drives the gear to rotate, the grinding plate moves outward along the gear groove to grind the outer surface of the teeth. This increases the grinding direction and improves the grinding effect. Furthermore, during the grinding process of the entire gear, the gear being ground and the grinding mechanism remain relatively stationary in the direction perpendicular to the connecting column. This avoids large errors in the grinding effect of the teeth of the same gear due to the repeated separation and engagement of the grinding mechanism with the gear, thus improving grinding accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the limiting mechanism of the present invention;

[0018] Figure 3 This is a schematic diagram of the grinding mechanism of the present invention;

[0019] Figure 4This is a combined view of the rectangular hole and the support column of the present invention;

[0020] Figure 5 This is a combined view of the grinding mechanism and the support column of the present invention;

[0021] Figure 6 For the present invention Figure 5 An enlarged view of region A.

[0022] Reference numerals: 1. Operating platform; 2. Support column; 3. Rectangular hole; 4. Support plate; 5. Support ring; 6. Connecting column; 7. Limiting mechanism; 701. Electric push rod one; 702. Electric push rod two; 703. Limiting block; 704. Support block; 8. Grinding mechanism; 801. Fixing block; 802. Movable hole; 804. Fixing column one; 805. Fixing column two; 806. Connecting plate; 807. Grinding plate; 808. Threaded collar; 809. Spiral pattern; 810. Annular groove; 811. Movable block; 812. Fixing rod; 813. Electric push rod three; 814. Mounting cylinder; 9. Mounting plate; 10. Electric telescopic rod; 11. Clamping plate. Detailed Implementation

[0023] 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. Example 1

[0024] like Figure 1 and Figure 2 As shown, the present invention proposes a rotary grinding device for the outer circumference of automotive gearbox gears, including an operating table 1. A support column 2 is rotatably connected to the upper outer surface of the operating table 1 near the middle. A rectangular hole 3 is opened on the outer surface of the support column 2 near the top. A support plate 4 is fixedly connected to the outer surface of the support column 2 below the rectangular hole 3. Support rings 5 ​​are provided on both sides of the upper outer surface of the operating table 1. A connecting column 6 is fixedly connected to the upper outer surface of the operating table 1 inside the support rings 5. Before grinding, the inner ring of the gear passes through the support column 2 and is then placed on the surface of the support plate 4. A grinding mechanism 8 is provided between the connecting column 6 and the corresponding support ring 5. A limiting mechanism 7 for supporting the gear is provided inside the rectangular hole 3.

[0025] The limiting mechanism 7 includes an electric push rod 701, an electric push rod 702, a limiting block 703, and a support block 704. An electric push rod 701 is located at the bottom of the inner surface of the rectangular hole 3, with one end fixedly connected to the rectangular hole 3 and the other end fixedly connected to the support block 704. Electric push rods 702 are located on both outer surfaces of the support block 704, with one end fixedly connected to the support block 704 and the other end fixedly connected to the limiting block 703. The limiting block 703 is L-shaped. Opening the electric telescopic rod 10 pulls the clamping plate 11 away from the support column 2, and then... Start the electric push rod 702. Both sets of electric push rods 702 push the limiting block 703 synchronously and at the same speed away from the support block 704. When one end of the limiting block 703 abuts against the inner ring of the gear, start the electric push rod 701 and close the electric push rod 702. The electric push rod 701 pushes the support block 704 upward until the inner surface of the L-shaped limiting block 703 engages with the gearbox. At this time, start the two sets of electric push rods 702 again so that they push the limiting block 703 synchronously and at the same speed until the electric push rods 702 can no longer move. At this time, the central axis of the gear coincides with the central axis of the support column 2. Example 2

[0026] like Figure 1-6 As shown, the difference between this embodiment and Embodiment 1 is that the grinding mechanism 8 includes a fixed block 801, a movable hole 802, a fixed block 801, a first fixed post 804, and a second fixed post 805. The fixed block 801 is sleeved on the outside of the connecting post 6, and the movable hole 802 is opened on the outer surface of the fixed block 801 at the position corresponding to the connecting post 6. Several sets of first fixed posts 804 are fixedly connected at equal intervals on the outer surface of the fixed block 801. The second fixed post 805 is fixedly connected to the ends of the outer surfaces of the first fixed post 804 away from the fixed block 801. One end of the second fixed post 805 is fixedly connected to the first fixed post 804, and the other end is fixedly connected to a connecting plate 806. A grinding plate 807 is fixedly connected to the outer surface of the connecting plate 806 on the side away from the second fixed post 805. The connecting plates 806 on both sides of the gear are located between two adjacent sets of teeth, and the grinding plate 807 is in contact with the sides of the two sets of teeth corresponding to the same groove. Example 3

[0027] like Figure 3 As shown, the difference between this embodiment and Embodiments 1 and 2 is that a threaded collar 808 is fixedly connected to the lower outer surface of the fixing block 801, and several sets of spiral patterns 809 are evenly arranged on the outer surface of the connecting column 6. The several sets of spiral patterns 809 are distributed in an intermittent manner. The threaded collar 808 is threadedly connected to the spiral patterns 809. The upper outer surface of the support ring 5 is provided with an annular groove 810, and two sets of movable blocks 811 are movably connected inside the annular groove 810.

[0028] A set of movable blocks 811 has a fixed rod 812 fixedly connected to the upper outer surface of the upper end, and another set of movable blocks 811 has an electric push rod 813 fixedly connected to the upper outer surface of the upper end. One end of the electric push rod 813 is fixedly connected to a set of movable blocks 811, and the other end is fixedly connected to a fixed block 801. The outer surface of the fixed rod 812 is movably connected to an installation cylinder 814, and the top end of the installation cylinder 814 is fixedly connected to the fixed block 801. When the electric push rod 813 is activated, it pulls the fixed block 801 downward. The connecting plate 806 drives the grinding plate 807 to move up and down with the fixed block 801. During the downward movement of the fixed block 801, when the threaded collar 808 separates from the helical thread 809, the grinding plate 807 moves with the fixed block 801 and grinds the tooth surface. Example 4

[0029] like Figure 1 As shown, the difference between this embodiment and embodiments 1, 2, and 3 is that an installation plate 9 is provided on the upper outer surface of the operating table 1 at one side of the support column 2, and an electric telescopic rod 10 is provided on the outer surface of the installation plate 9 near the support column 2. One end of the electric telescopic rod 10 is fixedly connected to the installation plate 9, and the other end is fixedly connected to a clamping plate 11, which is U-shaped. After a set of gears is polished, the electric telescopic rod 10 is activated again to push the clamping plate 11 towards the support column 2, thereby limiting the support column 2 and ensuring its stability. After the gears are installed, the electric telescopic rod 10 is activated to pull the clamping plate 11 away from the support column 2.

[0030] The working process and principle of this invention are as follows:

[0031] Step 1: Before grinding, insert the inner ring of the gear through the support column 2 and place it on the surface of the support plate 4. During this process, the connecting plates 806 on both sides of the gear are located between two adjacent sets of teeth.

[0032] Step 2: Activate the electric telescopic rod 10 to pull the clamping plate 11 away from the support column 2. Then activate the electric push rod 702. Both sets of electric push rods 702 push the limiting block 703 away from the support block 704 at the same speed. When one end of the limiting block 703 abuts against the inner ring of the gear, activate the electric push rod 701 and close the electric push rod 702. The electric push rod 701 pushes the support block 704 upward until the inner surface of the L-shaped limiting block 703 engages with the gearbox. At this time, activate the two sets of electric push rods 702 again to push the limiting block 703 at the same speed until the electric push rods 702 can no longer move. At this time, the central axis of the gear coincides with the central axis of the support column 2.

[0033] Step 3: Then start the electric push rod 813. The electric push rod 813 pulls the fixed block 801 down. The connecting plate 806 drives the grinding plate 807 to move up and down with the fixed block 801. During the downward movement of the fixed block 801, when the threaded collar 808 separates from the spiral thread 809, the grinding plate 807 moves with the fixed block 801 and grinds the tooth surface.

[0034] Step 4: When the threaded collar 808 corresponds to the helix 809 and continues to move downward, the threaded collar 808 drives the fixed block 801 to rotate. When the two sets of threaded collars 808 move up and down in the same direction, they rotate in opposite directions, thereby driving the gear to rotate. Therefore, the next set of teeth is polished, and the polishing plates 807 on both sides polish the gear at the same time.

[0035] Step 5: After a set of gears has been polished, start the electric telescopic rod 10 again to push the clamping plate 11 towards the support column 2 to limit the support column 2. Then remove the gear and control the electric push rod 813 to push the fixing block 801 upward so that it is above the uppermost spiral pattern 809. Then polish the next set of gears in the same way.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rotary grinding device for the outer circumference of automotive gearbox gears, comprising an operating table (1), wherein a support column (2) is rotatably connected to the upper outer surface of the operating table (1) near the middle, and a rectangular hole (3) is provided on the outer surface of the support column (2) near the top, and a support plate (4) is fixedly connected to the outer surface of the support column (2) below the rectangular hole (3), characterized in that, The upper outer surface of the operating table (1) is provided with a support ring (5) located on both sides of the support column (2). The upper outer surface of the operating table (1) is fixedly connected with a connecting column (6) located inside the support ring (5). A grinding mechanism (8) is provided between the connecting column (6) and the corresponding support ring (5). A limiting mechanism (7) for supporting the gear is provided inside the rectangular hole (3). The limiting mechanism (7) includes an electric push rod one (701), an electric push rod two (702), a limiting block (703), and a support block (704); an electric push rod one (701) is provided at the bottom of the inner surface of the rectangular hole (3), and one end of the electric push rod one (701) is fixedly connected to the rectangular hole (3), and the other end is fixedly connected to the support block (704). Electric push rod two (702) is provided on both outer surfaces of the support block (704), and one end of the electric push rod two (702) is fixedly connected to the support block (704), and the other end is fixedly connected to the limiting block (703). The limiting block (703) is L-shaped. The grinding mechanism (8) includes a fixed block (801), a movable hole (802), a first fixed post (804), and a second fixed post (805); the fixed block (801) is sleeved on the outside of the connecting post (6), and the movable hole (802) is opened on the outer surface of the fixed block (801) at the position corresponding to the connecting post (6), and a number of sets of first fixed posts (804) are fixedly connected at equal intervals on the outer surface of the fixed block (801); The lower outer surface of the fixed block (801) is fixedly connected with a threaded collar (808), and the outer surface of the connecting column (6) is provided with several sets of spiral patterns (809) at equal intervals. The several sets of spiral patterns (809) are distributed in an intermittent manner. The threaded collar (808) is threadedly connected to the spiral pattern (809), and the threaded collar (808) is spirally connected to the spiral pattern (809). The upper outer surface of the support ring (5) is provided with an annular groove (810), and two sets of movable blocks (811) are movably connected inside the annular groove (810). A fixed rod (812) is fixedly connected to the upper outer surface of one set of movable blocks (811), and an electric push rod three (813) is fixedly connected to the upper outer surface of another set of movable blocks (811). One end of the electric push rod three (813) is fixedly connected to a set of movable blocks (811), and the other end is fixedly connected to a fixed block (801). An installation cylinder (814) is movably connected to the outer surface of the fixed rod (812), and the top end of the installation cylinder (814) is fixedly connected to the fixed block (801).

2. The rotary grinding device for the outer circumference of automotive gearbox gears according to claim 1, characterized in that, Fixing post 2 (805) is fixedly connected to one end of the outer surface of fixing post 1 (804) away from fixing block (801). One end of fixing post 2 (805) is fixedly connected to fixing post 1 (804), and the other end is fixedly connected to connecting plate (806). A grinding plate (807) is fixedly connected to the outer surface of connecting plate (806) away from fixing post 2 (805).

3. The rotary grinding device for the outer circumference of automotive gearbox gears according to claim 1, characterized in that, An installation plate (9) is provided on the upper outer surface of the operating table (1) at one side of the support column (2), and an electric telescopic rod (10) is provided on the outer surface of the installation plate (9) near the support column (2). One end of the electric telescopic rod (10) is fixedly connected to the installation plate (9), and the other end is fixedly connected to a clamping plate (11), which is U-shaped.

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