Simple auxiliary tool for detecting worm gear and worm on center lathe

Abstract

The invention discloses a simple auxiliary tool for detecting a worm gear and a worm on a center lathe, which comprises a movable seat, a fixed seat and a fixed shaft, and is characterized in that the fixed seat is fixedly arranged on a follow rest of the center lathe, and one end of the movable seat is movably arranged on the fixed seat and can be fixed through a draw-in bolt; a fixed shaft is fixedly arranged at the other end of the movable seat and sleeved with the worm wheel through a bearing; scales for displaying rotation angles are engraved on the movable seat, and indicators are arranged at the positions, corresponding to the scales, of the fixed seat. The worm is mounted on the main axis of the lathe and can rotate freely; the worm gear is installed on the simple assistive device and can rotate freely, and the simple assistive device can conduct angle fine adjustment and height fine adjustment so as to guarantee correctness of installation positions of the worm gear and the worm and visibility of fine adjustment angles. The device is simple in structure, good in manufacturability and convenient to use and operate, and has certain practical value.

Description

Technical Field

[0001] The invention relates to the field of mechanical parts detection, and in particular to a simple auxiliary tool for detecting worm gears on a common lathe. Background Art

[0002] In the manufacturing technology of ordinary cylindrical worm gears and worms, such as Figure 1 As shown in the figure, the installation distance A of the worm wheel 14 and the worm 13, the position and area of ​​the tooth surface contact area, and the meshing and carding condition directly affect the quality after assembly. In actual processing, the worm 13 is first processed according to the design requirements, and then the worm wheel 14 is processed on the gear hobbing machine using a special worm gear hobbing cutter (the size of the worm gear hobbing cutter is consistent with that of the worm). During the processing, the inclination angle of the worm gear hobbing cutter needs to be adjusted to ensure the position and area of ​​the contact area.

[0003] Adjusting the tilt angle requires simulated installation testing, and adjusting the tilt angle of the gear hobbing cutter according to the conditions of the contact area. This process is performed using special equipment. Since most manufacturing companies rarely have special equipment, it is difficult to accurately adjust the tilt angle of the gear hobbing cutter. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a simple auxiliary tool for detecting worm gears on a common lathe which has a simple structure and is easy to operate.

[0005] The technical solution of the present invention to solve the above technical problems is: a simple auxiliary tool for worm gear detection on an ordinary lathe, comprising a movable seat, a fixed seat, and a fixed shaft. The fixed seat is fixedly installed on the tool rest of the ordinary lathe, and one end of the movable seat is movably installed on the fixed seat and can be fixed by a tightening bolt; a fixed shaft is fixedly set at the other end of the movable seat, and the worm gear is set on the fixed shaft through a bearing sleeve; the movable seat is engraved with a scale showing the rotation angle, and an indicator mark is provided at the corresponding scale position on the fixed seat.

[0006] The above-mentioned simple auxiliary tool for worm gear detection on an ordinary lathe, the fixed seat includes a cylinder, the cylinder is fixedly installed on the tool rest of the ordinary lathe, an annular plate extends outward from the outer circle of one end of the cylinder, and the indicator mark is arranged on the outer circle of the annular plate.

[0007] The above-mentioned simple auxiliary tool for testing worm gears on ordinary lathes has a mounting column at one end of the movable seat, which is inserted into the cylinder, and a threaded hole is opened at the end of the mounting column. The tension bolt is inserted from the other end of the cylinder and threadedly connected to the mounting column. The middle part of the movable seat is a conical surface, and the conical surface is engraved with ±20° scales, and the scales are located near the indicator mark.

[0008] The above-mentioned simple auxiliary tool for worm gear detection on an ordinary lathe has two parallel mounting arms at the other end of the movable seat, mounting holes are opened at the ends of the mounting arms, and the two ends of the fixed shaft are fixedly mounted in the mounting holes of the two mounting arms.

[0009] The above-mentioned simple auxiliary tool for testing worm gears on ordinary lathes is provided with spacers for limiting the position of the worm gear at positions on both sides of the worm gear on the fixed shaft.

[0010] The beneficial effects of the present invention are as follows: the worm is installed on the main axis of the lathe, and the worm is ensured to rotate freely; the worm wheel is installed on the simple auxiliary tool, the worm wheel can rotate freely, and the simple auxiliary tool can perform angle fine-tuning and height fine-tuning to ensure the correctness of the installation position of the worm wheel and the worm and the visibility of the fine-tuning angle. The present invention has a simple structure, good processability, convenient operation, and certain practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Schematic diagram of the coordination between the worm wheel and the worm.

[0012] Figure 2 It is a cross-sectional structural schematic diagram of the present invention.

[0013] Figure 3 for Figure 2 Left view of .

[0014] Figure 4 for Figure 2 Top view of the . DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] The present invention utilizes the meshing principle of the worm wheel and the worm to simulate the installation position and angle of the worm wheel and the worm. Figure 2-Figure 4 As shown, a simple auxiliary tool for worm gear detection on an ordinary lathe comprises a movable seat 1, a fixed seat 2 and a fixed shaft 3. The fixed seat 2 is fixedly mounted on the tool rest of the ordinary lathe, one end of the movable seat 1 is movably mounted on the fixed seat 2 and can be fixed by a tightening bolt 4; the other end of the movable seat 1 is fixedly provided with a fixed shaft 3, and a worm gear 14 is mounted on the fixed shaft 3 through a bearing sleeve; a scale 5 showing the rotation angle is engraved on the movable seat 1, and an indicator mark 6 is provided on the fixed seat 2 at a position corresponding to the scale 5.

[0017] The fixing seat 2 includes a cylinder 7 , which is fixedly mounted on a tool rest of a common lathe. An annular plate 8 is extended outwardly from the outer circle of one end of the cylinder 7 , and the indicator mark 6 is arranged on the outer circle of the annular plate 8 .

[0018] One end of the movable seat 1 is provided with a mounting post 9, which is inserted into the cylinder 7. A threaded hole is formed at the end of the mounting post 9. The tension bolt 4 is inserted from the other end of the cylinder 7 and is threadedly connected to the mounting post 9. The middle of the movable seat 1 is a conical surface 10, on which a scale 5 of ±20° is engraved, and the scale 5 is located near the indicator mark 6.

[0019] The other end of the movable seat 1 is provided with two mutually parallel mounting arms 11 , the ends of the mounting arms 11 are provided with mounting holes, and the two ends of the fixed shaft 3 are fixedly mounted in the mounting holes of the two mounting arms 11 .

[0020] The fixed shaft 3 is provided with spacers 12 on both sides of the worm wheel 14 for limiting the position of the worm wheel 14 . Spacers 12 of different lengths can be selected to adjust the position of the worm wheel 14 on the fixed shaft 3 , thereby adjusting the height of the worm wheel 14 .

[0021] When the processed worm wheel 14 and worm 13 are meshed and the contact area does not meet the requirements, the movable seat 1 is rotated forward and reversely until the contact area changes to meet the requirements. For the adjusted angle value, the corresponding angle and direction of the hob head are adjusted directly on the gear hobbing machine, and then the worm wheel 14 is processed to produce a pair of worm wheels 14 and worm 13 that meet the designed contact area. The adjustment angle will not be large, generally within ±10°.

[0022] The worm 13 is installed on the main axis of the lathe, and the worm 13 can rotate freely; the worm wheel 14 is installed on the simple auxiliary tool, the worm wheel 14 can rotate freely, and the simple auxiliary tool is installed on the tool rest. After adjusting the X and Y axial positions of the tool rest, the installation distance of the worm wheel 14 and the worm 13 is adjusted, and the parameter data such as the angle adjustment of the worm wheel 14, the meshing card situation detection, and the contact area detection are performed, and then the bevel angle of the hobbing machine hobbing machine is adjusted according to the angle adjustment; the simple auxiliary tool can perform angle fine adjustment and height fine adjustment to ensure the correctness of the installation position of the worm wheel 14 and the worm 13 and the visibility of the fine adjustment angle. The present invention has a simple structure, good processability, and is easy to use and operate, and has certain practical value.

Claims

1. A simple auxiliary tool for testing worm gears on ordinary lathes. Features: It includes a movable seat, a fixed seat, and a fixed shaft. The fixed seat is fixedly installed on the tool rest of an ordinary lathe. One end of the movable seat is movably installed on the fixed seat and can be fixed by a tightening bolt; a fixed shaft is fixedly set at the other end of the movable seat, and the worm gear is set on the fixed shaft through a bearing sleeve; the movable seat is engraved with a scale showing the rotation angle, and an indicator mark is provided at the corresponding scale position on the fixed seat.

2. The simple auxiliary tool for testing worm gears on a common lathe according to claim 1, Features: The fixing seat comprises a cylinder, which is fixedly mounted on a tool rest of a common lathe. An annular plate is extended outwardly from the outer circle of one end of the cylinder, and the indicator mark is arranged on the outer circle of the annular plate.

3. The simple auxiliary tool for testing worm gears on a common lathe according to claim 2, Features: The movable seat is provided with a mounting column at one end, the mounting column is inserted into the cylinder, a threaded hole is opened at the end of the mounting column, and a tightening bolt is inserted from the other end of the cylinder and threadedly connected with the mounting column. The middle part of the movable seat is a conical surface, and a ±20° scale is engraved on the conical surface, and the scale is located near the indicator mark.

4. The simple auxiliary tool for testing worm gears on a common lathe according to claim 3, Features: The other end of the movable seat is provided with two mutually parallel mounting arms, the ends of the mounting arms are provided with mounting holes, and the two ends of the fixed shaft are fixedly mounted in the mounting holes of the two mounting arms.

5. The simple auxiliary tool for testing worm gears on a common lathe according to claim 1, Features: Spacers for limiting the position of the worm gear are provided on the fixed shaft at positions on both sides of the worm gear.

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