Gear grinding positioning mechanism of transmission gear

Abstract

The utility model relates to the field of gear machining, and discloses a gear grinding positioning mechanism of a transmission gear, which comprises a fixed seat, a rotating column is fixedly connected to the top end of the fixed seat, a sliding sleeve is slidably connected to the periphery of the rotating column, a vertical sliding groove is formed in the periphery of the sliding sleeve, a sliding column is slidably connected to the inside of the vertical sliding groove, and the sliding column is fixedly connected to the top end of the fixed seat. A positioning circular ring is arranged on the periphery of the rotating column, a positioning groove is fixedly connected to the periphery of the sliding sleeve, and hinge blocks are fixedly connected to the periphery of the positioning circular ring and the inner wall of the side face of the positioning groove. According to the gear clamping mechanism, the scissor fork arms, the sliding columns and the rotating threaded rods are arranged, the tensioning plates are made to contract or expand, the tensioning plates conveniently clamp gear center holes of different sizes, the effect of clamping different types of gears is achieved, meanwhile, the gears and the clamping mechanism are concentric, the machining precision is improved, the yield is increased, and the service life of the gears is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the field of gear processing, in particular to a gear grinding positioning mechanism for a transmission gear. Background Art

[0002] Gear machining is an important part of the machinery manufacturing industry, with the goal of producing gears with high contour accuracy and stable quality. There are many methods for gear machining, such as milling, grinding, hobbing, shaving, shaping, etc. Among them, gear grinding is a finishing technology in gear machining, which is used to manufacture high-precision gears. This machining method uses a grinding wheel to remove small changes on the gear teeth, providing a more accurate tooth profile finish than gear cutting.

[0003] When performing gear grinding, the transmission gear usually needs to be positioned and fixed, and for this purpose, a gear grinding positioning mechanism for the transmission gear is required.

[0004] The current gear grinding positioning mechanism usually uses a fixed fixture to clamp the center hole of the gear. The size of the fixture cannot be adjusted, and only gears with the same hole spacing can be clamped. There are few processing types and poor economic benefits. In addition, the coaxiality requirement between the gear center hole and the gear pitch circle is very high. If the coaxiality cannot be maintained, the gear quality will be poor and the service life will be reduced. On the other hand, when grinding the transmission gear, the grinding wheel usually uses clean water to cool the grinding surface and reduce the splash of iron chips. However, in actual use, clean water will carry iron chips into the clamping device. Long-term use may cause wear of the clamping device. Therefore, a gear grinding positioning mechanism for a transmission gear is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a gear grinding positioning mechanism for a transmission gear, aiming to improve the problems in the prior art such as the inability of the clamp to be concentric with the gear and the limited clamping types.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a grinding gear positioning mechanism of a transmission gear, comprising a fixed seat, a rotating column is fixedly connected to the top of the fixed seat, a sliding sleeve is slidably connected to the outer periphery of the rotating column, a vertical sliding groove is opened on the outer periphery of the sliding sleeve, a sliding column is slidably connected inside the vertical sliding groove, a positioning ring is opened on the outer periphery of the rotating column, a positioning groove is fixedly connected to the outer periphery of the sliding sleeve, an articulated block is fixedly connected to the outer periphery of the positioning ring and the inner wall of the side of the positioning groove, a scissor arm is hinged on the outer side of the articulated block, a connecting assembly is arranged on the outer end of the scissor arm, a tensioning plate is fixedly connected to the outer periphery of the connecting assembly, and a threaded rod is rotatably connected inside the sliding sleeve.

[0007] As a further description of the above technical solution:

[0008] The top surface of the fixed seat is provided with a slope surface, the outer periphery of the rotating column is fixedly connected with a round table, the top of the fixed seat is fixedly connected with a placing table, the inside of the placing table is provided with a through groove, and the top of the placing table is provided with an annular groove.

[0009] As a further description of the above technical solution:

[0010] The inner side of the sliding column is fixedly connected to the outer periphery of the rotating column.

[0011] As a further description of the above technical solution:

[0012] The connecting assembly comprises a rotating wheel, the outer side of which is arranged inside the scissor arm, the outer periphery of which is slidably connected to a sliding seat, and the outer side of the sliding seat is fixedly connected to the inside of the tensioning plate.

[0013] As a further description of the above technical solution:

[0014] A rectangular handle is arranged on the outer periphery of the threaded rod, and the outer periphery of the threaded rod is threadedly connected to the inside of the rotating column.

[0015] As a further description of the above technical solution:

[0016] The inner wall of the side surface of the positioning groove and the outer wall of the side surface of the positioning ring are at the same distance from the center of the circle.

[0017] As a further description of the above technical solution:

[0018] The outer side of the slope surface is communicated with the through groove.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, by setting the scissor arms, sliding columns, and rotating the threaded rod, the tensioning plate is contracted or opened, and the tensioning plate conveniently clamps the center holes of gears of different sizes, thereby achieving the effect of clamping different types of gears. At the same time, the gears are concentric with the clamping mechanism, which improves the processing accuracy, improves the yield rate, and greatly improves the service life of the gears.

[0021] 2. In the utility model, by providing a truncated table and a slope surface, the waste liquid can be quickly discharged out of the positioning mechanism along the slope after entering the positioning mechanism, thereby reducing the residence time of the waste liquid in the positioning mechanism, thereby reducing the damage of iron filings to the clamping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is an overall front view schematic diagram of a gear grinding positioning mechanism for a transmission gear proposed by the utility model;

[0023] Figure 2This is a front view schematic diagram of a tensioning plate of a gear grinding positioning mechanism of a transmission gear proposed by the utility model;

[0024] Figure 3 The utility model is a front cross-sectional schematic diagram of a rotating column of a gear grinding positioning mechanism of a transmission gear.

[0025] Legend:

[0026] 1. Fixed seat; 2. Rotating column; 3. Sliding sleeve; 4. Vertical slide groove; 5. Sliding column; 6. Positioning ring; 7. Positioning groove; 8. Articulated block; 9. Scissor arm; 10. Rotating wheel; 11. Sliding seat; 12. Tensioning plate; 13. Threaded rod; 14. Slope surface; 15. Round table; 16. Placement table; 17. Through groove; 18. Annular groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1-Figure 3The utility model provides an embodiment: a gear grinding positioning mechanism for a transmission gear, comprising a fixed seat 1 that is convenient for fixing to a lathe, a rotating column 2 is fixedly connected to the top of the fixed seat 1, a sliding sleeve 3 is slidably connected to the outer periphery of the rotating column 2, the rotating column 2 limits the sliding sleeve 3 to only slide up and down along the rotating column 2, a vertical slide groove 4 is opened on the outer periphery of the sliding sleeve 3, six groups of vertical slide grooves 4 are arranged, and the vertical slide grooves 4 are evenly distributed in an annular manner inside the sliding sleeve 3, a sliding column 5 is slidably connected inside the vertical slide groove 4, and the inner side of the sliding column 5 is fixed Connected to the outer periphery of the rotating column 2, the vertical slide groove 4 and the sliding column 5 ensure that the rotation directions of the sliding sleeve 3 and the rotating column 2 are consistent. A positioning ring 6 is opened on the outer periphery of the rotating column 2. A positioning groove 7 is fixedly connected to the outer periphery of the sliding sleeve 3. The inner wall of the side of the positioning groove 7 and the outer wall of the side of the positioning ring 6 are at the same distance from the center of the circle, so that the positioning groove 7 and the positioning ring 6 are in the same plane in the vertical direction. The outer periphery of the positioning ring 6 and the inner wall of the side of the positioning groove 7 are fixedly connected with hinge blocks 8. There are six groups of hinge blocks 8, and each group is provided with two , the ring is evenly distributed on the outer periphery of the positioning ring 6 and the positioning groove 7, the outer side of the hinge block 8 is hinged with a scissor arm 9, the scissor arm 9 rotates, and can drive the inner and outer ends to extend and retract, and the scissor arm 9 is provided with two groups, which are symmetrically arranged on both sides of the hinge block 8, and the two opposite hinge blocks 8 are connected at the same time. A connecting component is arranged at the outer end of the scissor arm 9, and the connecting component includes a rotating wheel 10, the outer side of the rotating wheel 10 is arranged inside the scissor arm 9, and the outer periphery of the rotating wheel 10 is slidably connected with a sliding seat 11, and the sliding seat 11 limits the rotating wheel 10 to slide along The movable seat 11 slides back and forth inside, and a tensioning plate 12 is fixedly connected to the outer periphery of the connecting assembly. Six groups of tensioning plates 12 are arranged, which are distributed in a ring along the axis of the rotating column 2 to form a circle. The outer side of the sliding seat 11 is fixedly connected to the inside of the tensioning plate 12. A threaded rod 13 is rotatably connected to the inside of the sliding sleeve 3. A rectangular handle for easy rotation is arranged on the outer periphery of the threaded rod 13. The outer periphery of the threaded rod 13 is threadedly connected to the inside of the rotating column 2. When the threaded rod 13 is rotated, the threaded rod 13 will drive the sliding sleeve 3 to slide back and forth along the outer wall of the rotating column 2.

[0029] Reference Figure 1-Figure 2 A slope surface 14 is provided on the top surface of the fixed seat 1, and a truncated table 15 is fixedly connected to the outer periphery of the rotating column 2. The truncated table 15 is narrow at the top and wide at the bottom, and is inclined. A placement table 16 is fixedly connected to the top of the fixed seat 1 for conveniently placing the gear to be processed. A through groove 17 is provided inside the placement table 16. The outer side of the slope surface 14 is connected to the through groove 17 so that the internal sewage can be discharged. An annular groove 18 is provided on the top of the placement table 16 to increase the friction force.

[0030] Working principle: When you want to conveniently position and clamp the rotating gear, first place the gear on the placement table 16, the center hole of the gear passes through the tensioning plate 12, and then rotate the threaded rod 13, the threaded rod 13 drives the sliding sleeve 3 to slide downward, the sliding sleeve 3 drives the upper hinge block 8 to move downward, the hinge block 8 drives the inner ends of the scissor arm 9 to retract, the outer ends of the scissor arm 9 simultaneously shrink and extend the scissor arm 9 outward, so that the tensioning plate 12 opens outward, thereby firmly clamping the center hole of the column gear, and the concentricity is high. When grinding the gear, the grinding wheel grinds the rotating gear, and the iron filings are washed down by clean water, and part of the waste liquid enters the clamping device, and is discharged outward under the side slope of the truncated table 15 along the slope surface 14 and through the groove 17 to the outside of the device, thereby reducing the damage of the iron filings to the clamping device.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A transmission gear grinding positioning mechanism, comprising a fixing seat (1), characterized in that: The top of the fixed seat (1) is fixedly connected to a rotating column (2), the outer periphery of the rotating column (2) is slidably connected to a sliding sleeve (3), the outer periphery of the sliding sleeve (3) is provided with a vertical sliding groove (4), the vertical sliding groove (4) is slidably connected to a sliding column (5), the outer periphery of the rotating column (2) is provided with a positioning ring (6), the outer periphery of the sliding sleeve (3) is fixedly connected to a positioning groove (7), the outer periphery of the positioning ring (6) and the inner wall of the side of the positioning groove (7) are fixedly connected to a hinge block (8), the outer side of the hinge block (8) is hinged to a scissor arm (9), the outer end of the scissor arm (9) is provided with a connecting assembly, the outer periphery of the connecting assembly is fixedly connected to a tensioning plate (12), and the sliding sleeve (3) is rotatably connected to a threaded rod (13) inside.

2. The transmission gear grinding and positioning mechanism according to claim 1, characterized in that: The top surface of the fixed seat (1) is provided with a slope surface (14), the outer periphery of the rotating column (2) is fixedly connected with a truncated table (15), the top of the fixed seat (1) is fixedly connected with a placement table (16), a through groove (17) is provided inside the placement table (16), and the top of the placement table (16) is provided with an annular groove (18).

3. The transmission gear grinding and positioning mechanism according to claim 1, characterized in that: The inner side of the sliding column (5) is fixedly connected to the outer periphery of the rotating column (2).

4. The transmission gear grinding and positioning mechanism according to claim 1, characterized in that: The connecting assembly comprises a rotating wheel (10), the outer side of the rotating wheel (10) is arranged inside the scissor arm (9), the outer periphery of the rotating wheel (10) is slidably connected to a sliding seat (11), and the outer side of the sliding seat (11) is fixedly connected to the inside of the tensioning plate (12).

5. The transmission gear grinding and positioning mechanism according to claim 1, characterized in that: A rectangular handle is arranged on the outer periphery of the threaded rod (13), and the outer periphery of the threaded rod (13) is threadedly connected to the inside of the rotating column (2).

6. The transmission gear grinding and positioning mechanism according to claim 1, characterized in that: The inner wall of the side of the positioning groove (7) and the outer wall of the side of the positioning ring (6) are at the same distance from the center of the circle.

7. The transmission gear grinding and positioning mechanism according to claim 2, characterized in that: The outer side of the slope surface (14) is connected to the through groove (17).

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