Manual indexing hand wheel

Abstract

The utility model relates to the technical field of numerical control tiltable rotary workbenches, in particular to a manual indexing hand wheel which comprises a rack, a manual driving assembly is arranged on the left side of the rack and comprises a driving shaft rotationally installed on the inner wall of the rack, a driving disc is fixedly installed at the end, away from the rack, of the driving shaft, and the driving disc is fixedly connected with the rack. A driving handle is fixedly mounted on the outer side of the edge, away from the driving shaft, of the driving disc; an indexing positioning assembly is arranged on the side wall, located on one side of the manual driving assembly, of the rack and comprises an indexing plate fixedly installed on the side wall, located on the manual driving assembly, of the rack, and an adjusting transmission assembly is arranged in the rack. Equal indexing can be completed through a manual connection mode and the indexing plate, so that the system cost can be reduced, and a set of servo motor and a set of system are saved; and the improved structure is simple, the later maintenance cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled tiltable rotary worktables, in particular to a manual indexing hand wheel. Background Art

[0002] The CNC tilting rotary table is an important accessory of CNC machine tools and is widely used in milling machines, boring machines, drilling machines and other machine tools to achieve complex processing of workpieces.

[0003] The rotary part of the CNC tilting rotary table includes a motor, a reducer, an indexing mechanism, etc. The motor usually uses a servo motor to provide precise power output; the reducer is used to reduce the motor speed and increase the output torque; the indexing mechanism ensures that the table can accurately stop at the set angle position. The rotation of the table is controlled, and a specific angle positioning is achieved through the indexing mechanism to clamp and process the workpiece.

[0004] The CNC tilting rotary table currently uses a two-axis CNC system control. For users who do not require high accuracy or indexing angle of the tilting axis, accurate indexing can be achieved by improving the fixed-angle manual indexing handwheel, which can also achieve the accuracy of the servo motor. In this way, the use cost and maintenance cost will be reduced. Therefore, a manual indexing handwheel is provided. Summary of the invention

[0005] The purpose of the utility model is to provide a manual indexing handwheel, which can achieve the indexing that can be equally divided by manually connecting it to the indexing plate, thereby reducing the system cost and saving a set of servo motors and systems; and the improved structure is simple, reduces the subsequent maintenance cost, and improves production efficiency, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a manual indexing hand wheel, comprising a stand, a manual drive assembly is provided on the left side of the stand, the manual drive assembly comprises a drive shaft rotatably mounted on the inner wall of the stand, a drive disk is fixedly mounted on one end of the drive shaft away from the stand, and a drive handle is fixedly mounted on the outer side of the edge of the drive disk away from the drive shaft;

[0007] A dividing and positioning assembly is provided on the side wall of the platform located on one side of the manual drive assembly, and the dividing and positioning assembly includes a dividing plate fixedly mounted on the side wall of the platform located on the manual drive assembly;

[0008] The interior of the platform is a hollow structure, an adjusting transmission component is arranged inside the platform, and a workbench is arranged at the output end of the adjusting transmission component.

[0009] Preferably, the workbench is rotatably mounted on the upper end surface of the frame, and a bearing groove corresponding to and matching the workbench is provided on the upper end surface of the frame.

[0010] Preferably, the adjusting transmission assembly includes a first gear fixed to the power output end of the driving shaft, and the adjusting transmission assembly also includes a worm rotatably mounted inside the frame, and a second gear is fixedly mounted on one end of the worm close to the first gear.

[0011] Preferably, a vertically arranged main shaft is rotatably installed inside the stand, and a worm wheel is fixedly installed at a position corresponding to the main shaft and the worm.

[0012] Preferably, the bottom end of the main shaft is rotatably mounted on the bottom end surface inside the frame through a bearing, and the top end of the main shaft rotates through the top end surface inside the frame and is fixedly connected to the workbench.

[0013] Preferably, the indexing and positioning assembly further comprises an assembly rod fixedly mounted on the edge of the driving disc, and a positioning pin is mounted on the internal thread of the assembly rod.

[0014] Preferably, a plurality of positioning holes are formed on the side wall of the dividing plate close to the positioning pin, and the aperture size of the positioning holes matches the diameter size of the positioning pin.

[0015] Preferably, the driving shaft passes through the middle position of the dividing plate, and the dividing plate and the driving shaft are rotationally connected.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The numerical control rotary table of the utility model originally realizes the indexing accuracy through the servo system motor drive. After the improvement, it can realize the indexing that can be equally divided through manual connection with the indexing plate, thereby reducing the system cost and saving a set of servo motors and systems; and this improvement has a simple structure, reduces the later maintenance cost, and improves production efficiency;

[0018] 2. The transmission ratio of the worm gear transmission designed in this utility model is usually 1:50 to 1:200, and can even reach higher in some designs. This large-ratio transmission structure can adapt to different working requirements, especially high-load working conditions. The worm teeth are continuous and uninterrupted spiral teeth, and they are continuously engaged with the worm gear teeth without the process of entering and exiting the meshing. Therefore, the operation is stable, and the impact, vibration and noise are relatively small. And with the positioning of the indexing plate, accurate indexing of fixed angles can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is the overall structural view of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the test stand of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the connection between the manual drive component and the indexing and positioning component of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the connection between the manual drive component and the adjustment transmission component of the utility model.

[0024] Description of reference numerals:

[0025] 1. Stand; 2. Manual drive assembly; 201. Drive disk; 202. Drive handle; 203. Drive shaft; 3. Adjustment transmission assembly; 301. First gear; 302. Second gear; 303. Worm; 304. Worm wheel; 305. Spindle; 4. Indexing and positioning assembly; 401. Indexing disk; 402. Positioning pin; 403. Assembly rod; 404. Positioning hole; 5. Workbench; 6. Load-bearing groove. DETAILED DESCRIPTION

[0026] 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.

[0027] The utility model provides a technical solution:

[0028] See also Figure 1 to Figure 2A manual indexing handwheel comprises a stand 1, a manual driving assembly 2 is arranged on the left side of the stand 1, the manual driving assembly 2 comprises a driving shaft 203 rotatably mounted on the inner wall of the stand 1, a driving disk 201 is fixedly mounted on the end of the driving shaft 203 away from the stand 1, and a driving handle 202 is fixedly mounted on the outer side of the edge of the driving disk 201 away from the driving shaft 203; a dividing and positioning assembly 4 is arranged on the side wall of the stand 1 located on the side of the manual driving assembly 2, the dividing and positioning assembly 4 comprises a dividing disk 401 fixedly mounted on the side wall of the stand 1 located on the side of the manual driving assembly 2; the interior of the stand 1 is a hollow structure, the interior of the stand 1 is provided with an adjusting transmission assembly 3, and a working table 5 is arranged at the output end of the adjusting transmission assembly 3; the working table 5 is rotatably mounted on the upper end surface of the stand 1, and a bearing groove 6 corresponding to and matching the working table 5 is also opened on the upper end surface of the stand 1.

[0029] By adopting the above technical solution, when in use, the operator can manually hold the driving handle 202, and drive the driving disk 201 to rotate through the driving handle 202. The driving disk 201 is fixed to the driving shaft 203, thereby driving the driving shaft 203 to rotate. The rotation of the driving shaft 203 can drive the adjustment transmission component 3 to move, and the adjustment transmission component 3 can drive the workbench 5 to rotate in the bearing groove 6, so that the angle of the workbench 5 can be adjusted. When the driving disk 201 rotates, the dividing plate 401 on one side can be viewed. By observing the dividing plate 401, the rotation angle of the driving disk 201 can be observed, so that the rotation angle of the workbench 5 can be manually adjusted. The CNC rotary table 5 originally achieved the indexing accuracy through the servo system motor drive. After the improvement, it can achieve the indexing that can be equally divided through the manual connection with the dividing plate 401, thereby reducing the system cost and saving a set of servo motors and systems; and this improvement has a simple structure, reduces the later maintenance cost, and improves production efficiency.

[0030] Specifically, Figure 1 , Figure 3 and Figure 4As shown, the adjusting transmission assembly 3 includes a first gear 301 fixed at the power output end of the driving shaft 203, and the adjusting transmission assembly 3 also includes a worm 303 rotatably installed inside the stand 1, and a second gear 302 is fixedly installed at one end of the worm 303 close to the first gear 301, and a vertically arranged main shaft 305 is rotatably installed inside the stand 1, and a worm wheel 304 is fixedly installed at the corresponding position of the main shaft 305 and the worm 303, and the bottom end of the main shaft 305 is rotatably installed on the bottom end surface inside the stand 1 through a bearing, and the top end of the main shaft 305 rotates through the top end surface inside the stand 1 and is fixedly connected with the workbench 5. The indexing and positioning assembly 4 also includes an assembly rod 403 fixedly mounted at the edge of the driving disk 201, and a positioning pin 402 is installed on the internal thread of the assembly rod 403. A plurality of positioning holes 404 are opened on the side wall of the indexing disk 401 near the positioning pin 402, and the aperture size of the positioning hole 404 matches the diameter size of the positioning pin 402. The driving shaft 203 passes through the middle position of the indexing disk 401, and the indexing disk 401 and the driving shaft 203 are rotationally connected.

[0031] By adopting the above technical solution, when in use, the rotation of the drive shaft 203 can drive the first gear 301 to rotate, and the first gear 301 can drive the meshing second gear 302 to rotate. The second gear 302 is fixed on the worm 303, so that the worm 303 can be driven to rotate, and the worm 303 is meshed with the worm wheel 304, thereby driving the worm wheel 304 to rotate. The worm wheel 304 is fixed on the main shaft 305, and the main shaft 305 is connected to the workbench 5, so that the workbench 5 can be driven to rotate. When the rotation angle is adjusted, the positioning pin 402 is rotated, and the positioning pin 402 extends inside the assembly rod 403, so that the positioning pin 402 can be inserted into the positioning hole 404, so as to complete the positioning of the rotation angle. The transmission ratio of the designed worm gear transmission is usually 1:50 to 1:200, and can even reach higher in some designs. This large-scale transmission structure can adapt to different working requirements, especially high-load working conditions. The worm gear is a continuous spiral gear, which meshes with the worm gear continuously without entering and exiting the meshing process, so it works smoothly with relatively small impact, vibration and noise. And with the positioning of the indexing plate 401, it can achieve accurate indexing of fixed angles.

[0032] Working principle: When in use, the operator can manually hold the driving handle 202, and drive the driving disk 201 to rotate through the driving handle 202. The driving disk 201 is fixed to the driving shaft 203, thereby driving the driving shaft 203 to rotate. The rotation of the driving shaft 203 can drive the first gear 301 to rotate, and the first gear 301 can drive the meshing second gear 302 to rotate. The second gear 302 is fixed on the worm 303, thereby driving the worm 303 to rotate. The worm 303 is meshed with the worm wheel 304, thereby driving the worm wheel 304 to rotate. The worm wheel 304 is fixed on the main shaft 305, and the main shaft 305 is connected to the workbench 5, so that the workbench 5 can be driven to rotate, thereby realizing the workbench 5 on the load-bearing The drive disc 201 rotates in the groove 6, so that the angle of the workbench 5 can be adjusted, and when the drive disc 201 rotates, the dividing plate 401 on one side can be viewed, and the rotation angle of the drive disc 201 can be observed by observing the dividing plate 401. When the rotation angle is adjusted, the positioning pin 402 is rotated, and the positioning pin 402 extends inside the assembly rod 403, so that the positioning pin 402 can be inserted into the positioning hole 404, so as to complete the positioning of the rotation angle. When adjusting the angle, when the designed worm gear transmission ratio is 1:90, through the 1:2 gear set, the total transmission ratio is 1:180. When the worm wheel 304 needs to rotate 1°, the 1° division is achieved by integer division of the dividing plate 401. The worm 303 rotates 1 circle, and the worm wheel 304 rotates 4°. To realize the worm wheel 304 rotating 1°, the worm 303 needs to rotate 1 / 4 circle, and then through the 1:2 gear, the first-stage gear needs to rotate 1 / 2 circle. By rotating the dividing plate 401 1 / 2 circle and positioning the positioning pin, 1° can be achieved. The other angle divisions are the same.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A manual indexing hand wheel, comprising a stand (1), characterized in that: A manual drive assembly (2) is provided on the left side of the stand (1), and the manual drive assembly (2) comprises a drive shaft (203) rotatably mounted on the inner wall of the stand (1), a drive disk (201) is fixedly mounted on one end of the drive shaft (203) away from the stand (1), and a drive handle (202) is fixedly mounted on the outer side of the edge of the drive disk (201) away from the drive shaft (203); A graduation positioning assembly (4) is provided on a side wall of the platform (1) located on one side of the manual drive assembly (2), and the graduation positioning assembly (4) comprises a graduation plate (401) fixedly mounted on a side wall of the platform (1) located on the manual drive assembly (2); The interior of the stand (1) is a hollow structure. An adjusting transmission component (3) is provided inside the stand (1), and a workbench (5) is provided at the output end of the adjusting transmission component (3).

2. A manual indexing handwheel according to claim 1, characterized in that: The workbench (5) is rotatably mounted on the upper end surface of the stand (1), and a bearing groove (6) corresponding to and matching the workbench (5) is also provided on the upper end surface of the stand (1).

3. A manual indexing handwheel according to claim 1, characterized in that: The adjusting transmission assembly (3) comprises a first gear (301) fixed to the power output end of the driving shaft (203), and the adjusting transmission assembly (3) also comprises a worm (303) rotatably mounted inside the stand (1), and a second gear (302) is fixedly mounted on one end of the worm (303) close to the first gear (301).

4. A manual indexing hand wheel according to claim 3, characterized in that: A vertically arranged main shaft (305) is rotatably mounted inside the stand (1), and a worm wheel (304) is fixedly mounted at a position corresponding to the main shaft (305) and the worm (303).

5. A manual indexing hand wheel according to claim 4, characterized in that: The bottom end of the main shaft (305) is rotatably mounted on the bottom end surface inside the stand (1) via a bearing, and the top end of the main shaft (305) is rotatably penetrated through the top end surface inside the stand (1) and is fixedly connected to the workbench (5).

6. A manual indexing hand wheel according to claim 1, characterized in that: The indexing and positioning assembly (4) further comprises an assembly rod (403) fixedly mounted on the edge of the driving disk (201), and a positioning pin (402) is mounted on the internal thread of the assembly rod (403).

7. A manual indexing hand wheel according to claim 6, characterized in that: A plurality of positioning holes (404) are provided on the side wall of the indexing plate (401) close to the positioning pin (402), and the aperture size of the positioning holes (404) matches the diameter size of the positioning pin (402).

8. A manual indexing hand wheel according to claim 7, characterized in that: The driving shaft (203) passes through the middle position of the dividing plate (401), and the dividing plate (401) and the driving shaft (203) are rotationally connected.

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