Accurate grinding device for worm of speed reducer

Abstract

The utility model relates to a fine grinding device for a worm of a speed reducer, which comprises a fixed seat and is characterized in that a U-shaped frame is fixedly connected to the upper end of the fixed seat, positioning and clamping components are arranged on two sides of the U-shaped frame and used for clamping two ends of the worm of the speed reducer, the axis of the worm of the speed reducer is horizontally arranged, and the axis of the worm of the speed reducer is fixedly connected with the U-shaped frame. Driving assemblies are arranged at the upper end and the lower end of the speed reducer worm and used for rotating with the axis of the speed reducer worm as the center, a rotating shaft is further arranged on one side of the speed reducer worm, and a grinding wheel is fixedly installed at one end of the rotating shaft and used for accurately grinding an inner hole in one end of the speed reducer worm. The axis of the rotating shaft and the axis of the speed reducer worm are located on the same straight line, and the other end of the rotating shaft is fixedly installed on an output shaft of the first motor.

Description

TECHNICAL FIELD

[0001] The utility model relates to a field of polishing technique, specifically relates to a kind of fine grinding device for speed reducer worm. BACKGROUND

[0002] At present, motor-driven speed reducer is composed of motor, motor support, shaft coupling, transmission shaft, worm gear, worm, speed reducer box, bearing, output shaft, etc., and the worm is the core transmission component of precision speed reducer, which is usually clamped and fixed during processing, and the inner hole at one end of the worm is polished, since the axial clamping precision of the worm is not enough, the inner hole roundness of the inner hole at one end of the worm is out of tolerance after polishing, and the machining quality of the inner hole directly affects the coaxiality and transmission stability during later use of the worm. SUMMARY

[0003] The summary portion of the present application is used to introduce the concept in a brief form, which will be described in detail in the following detailed description portion. The summary portion of the present application is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0004] In order to solve the technical problems mentioned in the background part, some embodiments of the present application provide a kind of fine grinding device for speed reducer worm, including fixed seat, the fixed seat upper end is fixedly connected with U-shaped frame, the both sides of the U-shaped frame are equipped with positioning clamping assembly for clamping the both ends of speed reducer worm, the axis of the speed reducer worm is horizontally placed, the upper and lower ends of the speed reducer worm are provided with driving assembly for rotating around its axis, the side of the speed reducer worm is also equipped with rotating shaft, the one end of the rotating shaft is fixedly installed with grinding wheel, the grinding wheel is used for fine grinding the inner hole at one end of speed reducer worm, the axis of the rotating shaft and the axis of the speed reducer worm are on a straight line, the other end of the rotating shaft is fixedly installed on the first motor output shaft.

[0005] Specifically, the positioning clamping assembly includes a rear top rod slidingly disposed on the fixed seat, the rear top rod has a ring body fixedly sleeved at an end away from the speed reducer worm, a handle is provided on the front side of the rear top rod, the handle is rotatably connected to the fixed seat by a first connecting shaft, a sliding groove is provided on the side of the ring body close to the handle, the handle is slidingly connected to the ring body by a second connecting shaft, the second connecting shaft slides in the sliding groove, a compression spring is further provided on the fixed seat, the compression spring generates a pushing force on the handle and a pushing force on the rear top rod in the direction of the speed reducer worm.

[0006] Specifically, the positioning and clamping assembly further comprises a moving seat slidingly arranged on the fixed seat, the first motor is fixedly connected to the moving seat, the moving seat is provided with a bottom plate near the side of the worm gear of the speed reducer, two guide rods are fixedly arranged in parallel on the bottom plate, one end of each guide rod is fixed to the bottom plate and the other end is slidingly penetrated into the moving seat, the bottom plate and the moving seat are further connected by a first spring, a front jacking rod is rotatably arranged on the bottom plate, the front jacking rod is hollow and sleeved outside the rotating shaft, the front jacking rod is coaxially arranged with the rotating shaft, a first air cylinder is fixedly arranged on the U-shaped frame, and the telescopic end of the first air cylinder is fixedly connected to one side wall of the moving seat.

[0007] Specifically, the positioning and clamping assembly further comprises an auxiliary rod sleeved on the front jacking rod, the auxiliary rod is slidingly connected with the front jacking rod, and the auxiliary rod and the front jacking rod are further connected by a second spring.

[0008] Specifically, one end of the auxiliary rod near the direction of the worm gear of the speed reducer is provided with an inner conical surface, one end of the front jacking rod near the direction of the worm gear of the speed reducer is provided with an outer conical surface, and the inner conical surface and the outer conical surface abut against one end of the worm gear of the speed reducer.

[0009] Specifically, the driving assembly comprises a lower sliding block slidingly arranged in a vertical direction on the U-shaped frame, the position of the lower sliding block is adjusted by a screw rod, the screw rod is located at the lower end of the lower sliding block, the upper end of the screw rod is rotatably connected to the lower sliding block, the lower end of the screw rod is threadedly connected to the fixed seat, a lower driving shaft is rotatably and penetratingly arranged on the lower sliding block, the lower driving shaft is located directly below the worm gear of the speed reducer and is arranged in parallel with the axis line of the worm gear of the speed reducer, a lower driving roller is fixedly sleeved to one end of the lower driving shaft and a first belt pulley is fixedly sleeved to the other end of the lower driving shaft, a central shaft is rotatably connected to the upper end of the U-shaped frame away from the worm gear of the speed reducer, a rotating plate is fixedly sleeved to the central shaft, a fixed block is fixedly arranged on the rotating plate, an upper driving shaft is rotatably and penetratingly arranged on the fixed block, the upper driving shaft is located above the worm gear of the speed reducer and is arranged in parallel with the axis line of the worm gear of the speed reducer, an upper driving roller is fixedly sleeved to one end of the upper driving shaft and a second belt pulley is fixedly sleeved to the other end of the upper driving shaft.

[0010] Specifically, the driving assembly further comprises an upper sliding block slidingly arranged at the upper end of the rotating plate, a second air cylinder is fixedly arranged above the upper sliding block and on the U-shaped frame, and the telescopic end of the second air cylinder is rotatably connected to the upper sliding block.

[0011] Specifically, the driving assembly further comprises a second motor fixedly arranged on the fixed seat, a third belt pulley and a fourth belt pulley are fixedly sleeved to the output shaft of the second motor, the axis line of the output shaft of the second motor is in a straight line with the axis line of the central shaft, the first belt pulley and the third belt pulley are drivingly connected by a first belt, and the second belt pulley and the fourth belt pulley are drivingly connected by a second belt.

[0012] Specifically, a limiting plate is fixed on the U-shaped frame by screws, the front end of the limiting plate abuts against the worm gear of the reducer, and a high-hardness block is fixedly installed thereon.

[0013] The beneficial effects of this utility model are:

[0014] The front push rod, rear push rod, and auxiliary rod clamp both ends of the reducer worm gear, i.e., axial clamping, ensuring high clamping accuracy. The upper and lower drive rollers rotate simultaneously and in the same direction, clamping and driving the reducer worm gear to rotate. The reducer worm gear is clamped perpendicular to the axial direction, providing multi-directional clamping and limiting, ensuring high clamping accuracy. Its rotation direction is opposite to the grinding wheel's rotation direction, improving the efficiency of fine grinding. Furthermore, the active rotation of both the reducer worm gear and the grinding wheel ensures high transmission stability. The fact that both the reducer worm gear and the grinding wheel rotate actively ensures good coaxiality quality after fine grinding of the reducer worm gear's inner hole. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0016] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the drive component.

[0020] Figure 3 This is a schematic diagram of the limiting plate.

[0021] Figure 4 This is a front view of the present invention;

[0022] Figure 5 for Figure 4 A sectional view of line AA in the diagram;

[0023] Figure 6 for Figure 5 Enlarged view of point A in the image;

[0024] Figure 7 for Figure 6 Enlarged view of point B in the image. Detailed Implementation

[0025] Embodiments of the present disclosure will be described below in greater detail with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thoroughly and completely understood. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0026] In addition, it should be further noted that only parts related to the present application are shown in the drawings for ease of description. The embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0027] It should be noted that the concepts of "first", "second", etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0028] It should be noted that the modification of "one" or "multiple" mentioned in the present disclosure is illustrative and not restrictive, and those skilled in the art should understand that unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0029] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0030] Referring to Figures 1-7 The utility model discloses a kind of precision grinding device for speed reducer worm, including fixed seat 1, the fixed seat 1 upper end is fixedly connected with U-shaped frame 2, the both sides of the U-shaped frame are equipped with positioning clamping assembly 3 for clamping the both ends of speed reducer worm, the axis of the speed reducer worm is horizontally placed, driving assembly 4 is arranged at the upper and lower ends of the speed reducer worm for rotating with its axis as center, one side of the speed reducer worm is also equipped with shaft 5, one end of the shaft is fixedly installed with grinding wheel 6, the grinding wheel is used to grind the inner hole at one end of speed reducer worm, the axis of the shaft and the axis of the speed reducer worm are on a straight line, the other end of the shaft is fixedly installed on the output shaft of first motor 7.

[0031] Specifically, the positioning clamping assembly 3 includes a rear top rod 31 slidingly disposed on the fixed seat, a ring body 32 fixedly sleeved to the rear top rod away from one end of the speed reducer worm, a handle 33 provided on the front side of the rear top rod, the handle being rotatably connected to the fixed seat through a first connecting shaft 34, the ring body being provided with a sliding groove 35 on the side close to the handle, the handle being slidingly connected to the ring body through a second connecting shaft, the second connecting shaft slidingly located in the sliding groove, the fixed seat further being provided with a compression spring 36, the compression spring generating a pushing force on the handle and a pushing force on the rear top rod in the direction of the speed reducer worm.

[0032] Specific, the positioning and clamping assembly 3 further comprises a moving seat 37 slidingly arranged on the fixed seat, the first motor is fixedly connected to the moving seat, the moving seat is provided with a bottom plate 38 near the side of the worm gear of the speed reducer, two guide rods 39 are fixedly arranged in parallel on the bottom plate, one end of the two guide rods is fixed to the bottom plate and the other end is slidingly penetrated in the moving seat, the bottom plate and the moving seat are further connected through a first spring 310, a front jacking rod 320 is rotatably arranged on the bottom plate, the front jacking rod is hollowly arranged and sleeved outside the rotating shaft, the front jacking rod is coaxially arranged with the rotating shaft, a first air cylinder 370 is fixedly arranged on the U-shaped frame, and the telescopic end of the first air cylinder is fixedly connected to one side wall of the moving seat.

[0033] Specific, the positioning and clamping assembly 3 further comprises a moving seat 37 slidingly arranged on the fixed seat, the first motor is fixedly connected to the moving seat, the moving seat is provided with a bottom plate 38 near the side of the worm gear of the speed reducer, two guide rods 39 are fixedly arranged in parallel on the bottom plate, one end of the two guide rods is fixed to the bottom plate and the other end is slidingly penetrated in the moving seat, the bottom plate and the moving seat are further connected through a first spring 310, a front jacking rod 320 is rotatably arranged on the bottom plate, the front jacking rod is hollowly arranged and sleeved outside the rotating shaft, the front jacking rod is coaxially arranged with the rotating shaft, a first air cylinder 370 is fixedly arranged on the U-shaped frame, and the telescopic end of the first air cylinder is fixedly connected to one side wall of the moving seat.

[0034] Specific, the moving seat is provided with an inner conical surface 350 at one end near the worm gear of the speed reducer, the front jacking rod is provided with an outer conical surface 360 at one end near the worm gear of the speed reducer, and the inner conical surface and the outer conical surface abut one end of the worm gear of the speed reducer.

[0035] Specific, the driving assembly 4 comprises a lower sliding block 41 slidingly arranged in the vertical direction on the U-shaped frame, the position of the lower sliding block is adjusted by a screw rod 42, the screw rod is located at the lower end of the lower sliding block, the upper end of the screw rod is rotatably connected to the lower sliding block, the lower end of the screw rod is threadedly connected to the fixed seat, a lower driving shaft 43 is rotatably and penetratingly arranged on the lower sliding block, the lower driving shaft is located directly below the worm gear of the speed reducer and is arranged in parallel with the axis line of the worm gear of the speed reducer, a lower driving roller 44 is fixedly sleeved at one end of the lower driving shaft and a first belt pulley 45 is fixedly sleeved at the other end of the lower driving shaft, a central shaft 46 is rotatably connected to the end of the U-shaped frame away from the worm gear of the speed reducer, a rotating plate 47 is fixedly sleeved on the central shaft, a fixed block 48 is fixedly arranged on the rotating plate, an upper driving shaft 49 is rotatably and penetratingly arranged on the fixed block, the upper driving shaft is located above the worm gear of the speed reducer and is arranged in parallel with the axis line of the worm gear of the speed reducer, an upper driving roller 410 is fixedly sleeved at one end of the upper driving shaft and a second belt pulley 420 is fixedly sleeved at the other end of the upper driving shaft.

[0036] Specific, the driving assembly 4 further comprises an upper sliding block 430 slidingly arranged at the upper end of the rotating plate, a second air cylinder 440 is fixedly arranged above the upper sliding block and on the U-shaped frame, and the telescopic end of the second air cylinder is rotatably connected to the upper sliding block.

[0037] Specific, the drive assembly 4 further comprises a second motor 450 fixed on the fixed seat, a third pulley 460 and a fourth pulley 470 are fixedly sleeved on the output shaft of the second motor, the axis of the output shaft of the second motor and the axis of the central shaft are on a straight line, the first pulley and the third pulley are drivingly connected through the first belt 480, and the second pulley and the fourth pulley are drivingly connected through the second belt 490.

[0038] Specific, the U-shaped frame is provided with a limiting plate 21 fixed by screws, the front end of the limiting plate is in abutment with the reducer worm, and a high-hardness block 22 is fixedly installed.

[0039] Working principle: first, rotate the handle to compress the compression spring, drive the ring body and the rear top rod to move away from the front top rod, then place the reducer worm to be finely ground between the rear top rod and the front top rod, and the reducer worm is in contact with the high-hardness block on the lower driving roller and the limiting plate, release the handle, the handle drives the ring body and the rear top rod to generate a forward thrust on the front top rod through the thrust of the compression spring, finally the two ends of the reducer worm are clamped and fixed by the rear top rod and the front top rod, the first cylinder stops working, the moving seat remains in position, the front top rod and the rear top rod abut and clamp the two ends of the reducer worm, the auxiliary rod and the second spring are arranged to limit the reducer worm again, and the clamping effect of the reducer worm is improved;

[0040] After the two ends of the reducer worm are clamped, the second cylinder is started, the rotating plate rotates around the central shaft, the upper driving roller moves towards the lower driving roller, and finally the upper driving roller and the lower driving roller abut on the outer wall of the reducer worm at the same time, the reducer worm is clamped and fixed again, and the upper sliding block slides on the rotating plate; the axial clamping precision of the whole reducer worm is high.

[0041] At the same time, the first motor and the second motor and the first cylinder are started, the first cylinder drives the moving seat to move towards the reducer worm, drives the first motor to move together, the first spring is self-adapted to expand and contract, the rotating shaft and the grinding wheel thereon move together, the grinding wheel is inserted into the inner hole of one end of the reducer worm, the first motor drives the rotating shaft and the grinding wheel to rotate, the grinding wheel finely grinds the inner hole of the reducer worm, the second motor drives the third pulley and the fourth pulley to rotate, the first pulley and the second pulley are driven to rotate through the first belt and the second belt, the lower driving shaft and the upper driving shaft rotate at the same time and in the same direction, the upper driving roller and the lower driving roller rotate at the same time and in the same direction, the reducer worm is driven to rotate, the rotating direction of the reducer worm is opposite to that of the grinding wheel, the efficiency of fine grinding is improved, the reducer worm and the grinding wheel are actively rotated, the transmission stability is high, the coaxiality quality of the inner hole of the reducer worm after fine grinding is good, the whole clamping is convenient and fast, multi-directional clamping and limiting, the clamping precision is high, and the quality of the reducer worm after polishing is high.

[0042] The above description is merely exemplary of some preferred embodiments of the present disclosure and technical principles of the present disclosure. It should be understood by those skilled in the art that the scope of the application involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by the combinations of the above technical features or equivalent features without departing from the above inventive concept. For example, the above features and technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) are replaced with each other to form technical solutions.

Claims

1. A lapping device for a reducer worm comprising a fixed seat, characterized in that: The upper end of the fixing base is fixedly connected with a U-shaped frame, both sides of the U-shaped frame are provided with positioning and clamping assemblies for clamping both ends of the reducer worm, the axis of the reducer worm is horizontally placed, both ends of the reducer worm are provided with driving assemblies for rotating around the axis, one side of the reducer worm is further provided with a rotating shaft, one end of the rotating shaft is fixedly installed with a grinding wheel, the grinding wheel is used for fine grinding the inner hole at one end of the reducer worm, the axis of the rotating shaft is in a straight line with the axis of the reducer worm, the other end of the rotating shaft is fixedly installed on the output shaft of the first motor.

2. A lapping device for a reducer worm according to claim 1, characterized in that: The positioning and clamping assembly comprises a rear jack rod slidingly arranged on the fixing base, a ring body is fixedly sleeved on one end of the rear jack rod away from the reducer worm, a handle is arranged on the front side of the rear jack rod, the handle is rotationally connected with the fixing base through a first connecting shaft, a sliding groove is arranged on the side of the ring body close to the handle, the handle is slidingly connected with the ring body through a second connecting shaft, the second connecting shaft slides in the sliding groove, a compression spring is further arranged on the fixing base, the handle is pushed by the compression spring, and the rear jack rod is pushed in the direction of the reducer worm.

3. A lapping device for a reducer worm as defined in claim 1, characterized in that: The positioning and clamping assembly further comprises a moving base slidingly arranged on the fixing base, the first motor is fixedly connected with the moving base, a bottom plate is arranged on the side of the moving base close to the reducer worm, two guide rods are fixedly arranged on the bottom plate in parallel, one end of the two guide rods is fixed on the bottom plate and the other end is slidingly penetrated in the moving base, the bottom plate and the moving base are further connected through a first spring, a front jack rod is rotationally arranged on the bottom plate, the front jack rod is hollowly arranged and sleeved outside the rotating shaft, the front jack rod is coaxially arranged with the rotating shaft, a first air cylinder is fixedly arranged on the U-shaped frame, and the telescopic end of the first air cylinder is fixedly connected with one side wall of the moving base.

4. A lapper for a reducer worm as defined in claim 3, wherein: The positioning and clamping assembly further comprises an auxiliary rod sleeved on the front jack rod, the auxiliary rod is slidingly connected with the front jack rod, and the auxiliary rod and the front jack rod are further connected through a second spring.

5. A lapping device for a reducer worm as defined in claim 4, characterized in that: One end of the auxiliary rod close to the reducer worm is provided with an inner conical surface, one end of the front jack rod close to the reducer worm is provided with an outer conical surface, and the inner conical surface and the outer conical surface abut against one end of the reducer worm.

6. A lapping device for a reducer worm as defined in claim 1, characterized in that: The driving assembly comprises a lower sliding block vertically slidingly arranged on the U-shaped frame, a screw rod adjusting the lifting position of the lower sliding block, the screw rod being located at the lower end of the lower sliding block, the upper end of the screw rod being rotatably connected to the lower sliding block, and the lower end of the screw rod being threadedly connected to a fixed seat, a lower driving shaft being rotatably arranged through the lower sliding block, the lower driving shaft being located directly below the worm of the speed reducer and being arranged in parallel with the axis of the worm, a lower driving roller being fixedly arranged at one end of the lower driving shaft, and a first belt pulley being fixedly arranged at the other end of the lower driving shaft, a central shaft being rotatably connected to the upper end of the U-shaped frame away from one end of the worm of the speed reducer, a rotating plate being fixedly arranged on the central shaft, a fixed block being fixedly arranged on the rotating plate, and an upper driving shaft being rotatably arranged through the fixed block, the upper driving shaft being located above the worm of the speed reducer and being arranged in parallel with the axis of the worm, an upper driving roller being fixedly arranged at one end of the upper driving shaft, and a second belt pulley being fixedly arranged at the other end of the upper driving shaft.

7. A lapping device for a reducer worm according to claim 6, characterized in that: The driving assembly further comprises an upper sliding block slidingly arranged at the upper end of the rotating plate, a second air cylinder being arranged above the upper sliding block and fixedly arranged on the U-shaped frame, and the telescopic end of the second air cylinder being rotatably connected to the upper sliding block.

8. A lapping device for a reducer worm according to claim 6, characterized in that: The driving assembly further comprises a second motor fixedly arranged on the fixed seat, a third belt pulley and a fourth belt pulley being fixedly arranged on the output shaft of the second motor, the axis of the output shaft of the second motor and the axis of the central shaft being arranged on the same straight line, the first belt pulley and the third belt pulley being drivingly connected by a first belt, and the second belt pulley and the fourth belt pulley being drivingly connected by a second belt.

9. A lapping device for a reducer worm as defined in claim 1, characterized in that: A limiting plate is fixedly arranged on the U-shaped frame by screws, the front end of the limiting plate being abutted against the worm of the speed reducer, and a high-hardness block being fixedly arranged on the limiting plate.

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