CN112676939A - Rotary cylinder barrel inner surface polishing equipment - Google Patents
Rotary cylinder barrel inner surface polishing equipment Download PDFInfo
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- CN112676939A CN112676939A CN202011517761.6A CN202011517761A CN112676939A CN 112676939 A CN112676939 A CN 112676939A CN 202011517761 A CN202011517761 A CN 202011517761A CN 112676939 A CN112676939 A CN 112676939A
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Abstract
The invention discloses a polishing device for processing the inner surface of a rotary cylinder barrel, which adopts an arc-shaped feeding mode and comprises a workpiece feeding part and a main shaft polishing part. The workpiece feeding part comprises a motor, a speed reducer, a transmission shaft, a workpiece to be processed, a corresponding bearing, a corresponding support and the like, the stepping motor drives the transmission shaft through the worm and gear speed reducer, the transmission shaft is arranged in a pair of paired bearings, and the transmission shaft drives the workpiece to realize feeding rotation through key connection. The main shaft polishing part comprises a motor, a speed reducer, a flexible shaft, a polishing blade, a corresponding coupler, a bearing, a support and the like, the servo motor drives the flexible shaft to rotate after passing through the planetary speed reducer, the flexible shaft completes bending transmission in a flexible shaft shell and drives the polishing blade to rotate, and therefore polishing of the inner surface of a rotary cylinder workpiece is achieved. The invention relates to a grinding device for the inner surface of a rotary cylinder barrel, which is a set of special equipment for processing ring arc parts and can keep the integrity of a processed workpiece on the basis of high efficiency and high precision of processing.
Description
Technical Field
The invention relates to the technical field of machining equipment, in particular to grinding equipment for the inner surface of a rotary cylinder barrel.
Background
The novel hydraulic servo rotary oil cylinder consists of an arc-shaped cylinder barrel and a piston, when the rotary hydraulic oil cylinder works, the annular inner surface of the cylinder barrel is in close contact with an annular piston rod and generates relative sliding, and the machining precision of the contact surface has important influences on the angular displacement output precision of the hydraulic oil cylinder and the overall stability of a joint. The machining mode of the hydraulic oil cylinder belongs to machining of circular arc parts, the traditional numerical control machine tool with linear feeding cannot machine the circular arc parts, and a general machine tool adopting an arc feeding mode is temporarily in a vacant state. In the prior art, a common processing method for the arc-shaped cylinder barrel is to divide the whole cylinder barrel into a plurality of parts, then process, polish and splice the parts into a whole, so that the processing mode greatly reduces the integrity and the overall precision of the whole cylinder barrel, and is complex, long in processing time and seriously affects the production efficiency.
Disclosure of Invention
The invention aims to provide special polishing equipment for polishing the inner surface of an integrally processed and formed arc-shaped rotary cylinder barrel, aiming at the defects of the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a gyration cylinder internal surface equipment of polishing, includes main shaft portion of polishing and bottom plate, main shaft portion of polishing sets up on the bottom plate, its characterized in that: the main shaft polishing part comprises a servo motor, a flexible shaft shell support and a polishing blade, wherein the flexible shaft shell is in a circular arc shape, the outer diameter of the flexible shaft shell is smaller than the inner diameter of a hydraulic cylinder to be polished, the flexible shaft shell is fixed on the bottom plate through the flexible shaft shell support, a hole is formed in the flexible shaft shell along a central shaft, the flexible shaft penetrates through the hole, one end of the flexible shaft is fixedly connected with a rotating shaft of the servo motor, and the other end of the flexible shaft is fixedly connected with the; the workpiece feeding part comprises a stepping motor, a transmission shaft and a support, the support is fixed on the bottom plate, a first bearing is arranged on the support, the transmission shaft penetrates through the first bearing, the output end of the stepping motor is connected with the transmission shaft, a central shaft hole of the hydraulic cylinder barrel is fixed on the transmission shaft, and when the workpiece feeding part drives the hydraulic cylinder barrel to rotate, the polishing blade can move along the inner surface of the hydraulic cylinder barrel and can polish.
Furthermore, the main shaft polishing part further comprises a planetary reducer and a plum blossom coupling, the output end of the servo motor is connected with the input end of the planetary reducer, and the output end of the planetary reducer is connected with one end of the flexible shaft through the plum blossom coupling.
Furthermore, the main shaft polishing part further comprises a stud, one end of the stud is connected with the shell of the planetary reducer, the other end of the stud is connected with the flexible shaft shell support, and the distance between the planetary reducer and the flexible shaft shell can be changed by adjusting the stud, so that the redundancy of the length of the flexible shaft in the hole channel is changed.
Further, the workpiece feeding part further comprises a first-stage worm gear reducer and a second-stage worm gear reducer, the output end of the stepping motor is connected with the input end of the first-stage worm gear reducer, the output end of the first-stage worm gear reducer is connected with the input end of the second-stage worm gear reducer, and the output end of the second-stage worm gear reducer is connected with the transmission shaft.
Furthermore, relative rotation is realized between the flexible shaft and the flexible shaft shell through arranging a second bearing, the flexible shaft shell is close to one end of the polishing blade is fixedly connected with a flexible shaft shell end cover, the outer ring of the second bearing is fixedly connected between the flexible shaft shell end cover and the flexible shaft shell, an upper soft shaft sleeve and a lower soft shaft sleeve are further arranged at one end of the flexible shaft close to the polishing blade, the inner ring of the second bearing is fixedly connected between the upper soft shaft sleeve and the lower soft shaft sleeve, and the polishing blade is fixedly connected with the flexible shaft through a bolt.
Furthermore, the lower soft shaft sleeve is fixedly connected to the flexible shaft through a set screw, and the upper end and the lower end of the upper soft shaft sleeve are respectively abutted against the polishing blade and the inner ring of the second bearing.
Furthermore, the hydraulic cylinder barrel is matched with the transmission shaft through keys to realize circumferential fixation, a shaft shoulder and a shaft sleeve are further arranged on the transmission shaft, and the hydraulic cylinder barrel is axially fixed between the shaft shoulder and the shaft sleeve.
Further, the grinding blade is in the shape of a polygonal frustum of a pyramid.
Furthermore, the flexible shaft is a multi-layer steel wire flexible shaft.
Further, the flexible shaft shell is made of a resin material for 3D printing.
Compared with the prior art, the invention has the beneficial effects that: 1. when parts are machined, a workpiece rotates along with a transmission shaft, so that a grinding blade can be fed along an arc line, the problem of power transmission in the arc feeding process is solved by using a flexible shaft, the rotary cylinder barrel part can be machined and molded at one time, the step of splitting the workpiece in the traditional rotary cylinder barrel machining method is avoided, the machining precision and efficiency of the hydraulic cylinder barrel are improved, the angular displacement output precision of the hydraulic cylinder barrel and the overall stability of a joint are expected to be improved, and the gap of special machining equipment for the rotary cylinder barrel is filled; 2. the hydraulic cylinder barrel feeding part and the main shaft polishing part are fixed on the same bottom plate, so that the integrity and the stability of the device are improved; 3. the two-stage worm and gear speed reducer is adopted to reduce the rotating speed of the transmission shaft so as to reduce the feeding speed of the hydraulic cylinder barrel, thereby improving the processing precision; 4. the transmission shaft and the hydraulic cylinder barrel are connected through keys to achieve torque transmission and circumferential fixing of the hydraulic cylinder barrel, the hydraulic cylinder barrel and a right transmission shaft sleeve achieve axial fixing through a shaft shoulder of the transmission shaft at the left end, and the hydraulic cylinder barrel is prevented from moving in the machining process; 5. the distance between the planetary reducer and the flexible shaft shell support is adjusted through four double-end studs, so that the flexible shaft is kept tensioned, the redundant length in the flexible shaft shell is reduced, and the transmission stability is improved; 6. the fixing mode among the upper soft shaft sleeve, the lower soft shaft sleeve, the second bearing and the soft shaft ensures that the grinding blade has stable rotating speed and stable operation in the rotating grinding process; 7. the grinding blade is in a polygonal frustum pyramid shape, and the material, the cutting angle and the number of cutting edges of the grinding blade can be changed according to the actual processing parameters and the material of the processed hydraulic cylinder barrel, so that the grinding blade is convenient to replace; 8. the flexible shaft is composed of a plurality of layers of steel wire flexible shafts, and the number of the steel wire layers and the diameter of the steel wire flexible shafts can be changed according to the torque required in the processing process and the different bending curvatures of the flexible shafts.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a cross-sectional view taken along line B of the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 3;
FIG. 5 is a cross-sectional view taken along line C of the present invention;
FIG. 6 is a view showing the structure of a hydraulic cylinder.
Wherein: 1-a servo motor; 2-a flexible shaft; 3-flexible shaft shell; 4-soft shaft outer casing support; 5-grinding the blade; 6-a hydraulic cylinder barrel; 7-a bottom plate; 8-pore channels; 9-a stepper motor; 10-a transmission shaft; 11-a support; 12-a first bearing; 13-a planetary reducer; 14-a plum blossom coupling; 15-a stud; 16-a first stage worm gear reducer; 17-a second stage worm gear reducer; 18-a second bearing; 19-end cover of flexible shaft shell; 20-upper soft shaft sleeve; 21-lower soft shaft sleeve; 22-bolt; 23-set screws; 61-central shaft hole; 101-shaft shoulder; 102-shaft sleeve.
Detailed Description
For the understanding of the present invention, the following detailed description will be given with reference to the accompanying drawings, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
Fig. 1-6 show a rotary cylinder inner surface polishing device, which comprises a main shaft polishing part and a bottom plate 7, wherein the main shaft polishing part is arranged on the bottom plate 7 and comprises a servo motor 1, a flexible shaft 2, a flexible shaft shell 3, a flexible shaft shell support 4 and a polishing blade 5, the flexible shaft shell 3 is arc-shaped, the outer diameter of the flexible shaft shell is smaller than the inner diameter of a hydraulic cylinder 6 to be polished, the flexible shaft shell 3 is fixed on the bottom plate 7 through the flexible shaft shell support 4, a hole 8 is arranged in the flexible shaft shell 3 along a central shaft, the flexible shaft 2 penetrates through the hole 8, one end of the flexible shaft 2 is fixedly connected with a rotating shaft of the servo motor 1, and the other end of the flexible shaft; still include the work piece portion of feeding, the work piece portion of feeding includes step motor 9, transmission shaft 10 and support 11, support 11 is fixed on bottom plate 7, be equipped with first bearing 12 on the support 11, transmission shaft 10 wears to establish on first bearing 12, step motor 9 output is connected with transmission shaft 10, the centre shaft hole 61 of hydraulic cylinder 6 is fixed on transmission shaft 10, when the work piece portion of feeding drives hydraulic cylinder 6 and rotates, the blade of polishing 5 can be along the internal surface removal of hydraulic cylinder 6 and polish.
As a specific implementation manner of the present invention, preferably, the main shaft polishing portion further includes a planetary reducer 13, a plum coupling 14, and a stud 15, an output end of the servo motor 1 is connected to an input end of the planetary reducer 13, an output end of the planetary reducer 13 is connected to one end of the flexible shaft 2 through the plum coupling 14, one end of the stud 15 is connected to a housing of the planetary reducer 13, and the other end is connected to the flexible shaft housing support 4, and the distance between the planetary reducer 13 and the flexible shaft housing 3 can be changed by adjusting the stud 15, so as to change the redundancy of the length of the flexible shaft 2 in the hole 8; the workpiece feeding part also comprises a first-stage worm and gear reducer 16 and a second-stage worm and gear reducer 17, the output end of the stepping motor 9 is connected with the input end of the first-stage worm and gear reducer 16, the output end of the first-stage worm and gear reducer 16 is connected with the input end of the second-stage worm and gear reducer 17, and the output end of the second-stage worm and gear reducer 17 is connected with the transmission shaft 10; the flexible shaft 2 and the flexible shaft shell 3 realize relative rotation by arranging a second bearing 18, one end of the flexible shaft shell 3 close to the polishing blade 5 is fixedly connected with a flexible shaft shell end cover 19, the outer ring of the second bearing 18 is fixedly connected between the flexible shaft shell end cover 19 and the flexible shaft shell 3, one end of the flexible shaft 2 close to the polishing blade 5 is also provided with an upper soft shaft sleeve 20 and a lower soft shaft sleeve 21, the inner ring of the second bearing 18 is fixedly connected between the upper soft shaft sleeve 20 and the lower soft shaft sleeve 21, and the polishing blade 5 is fixedly connected with the flexible shaft 2 through a bolt 22; the lower soft shaft sleeve 21 is fixedly connected to the soft shaft 2 through a set screw 23, and the upper end and the lower end of the upper soft shaft sleeve 20 are respectively abutted against the polishing blade 5 and the inner ring of the second bearing 18; the hydraulic cylinder 6 is matched with the transmission shaft 10 through a key to realize circumferential fixation, a shaft shoulder 101 and a shaft sleeve 102 are further arranged on the transmission shaft 10, and the hydraulic cylinder 6 is axially fixed between the shaft shoulder 101 and the shaft sleeve 102; the grinding blade 5 is in the shape of a polygonal frustum pyramid; the flexible shaft 2 is a multi-layer steel wire flexible shaft; the flexible shaft shell 3 is made of 3D printed resin.
The working process and principle of the above embodiment are explained with the accompanying drawings as follows: firstly, a central shaft 61 hole of a hydraulic cylinder barrel 6 to be polished is arranged on a transmission shaft 10 in a penetrating way, the circumferential fixation of the hydraulic cylinder barrel 6 is realized through key matching, a shaft sleeve 102 is sleeved on the transmission shaft 10, the hydraulic cylinder barrel 6 is limited between the shaft sleeve 102 and a shaft shoulder 101, and the axial fixation of the hydraulic cylinder barrel 6 is realized; then, a grinding blade 5 and a flexible shaft 2 which are suitable for the hydraulic cylinder 6 are replaced, the servo motor 1 is started, and after transmission of a planetary reducer 13 and a plum coupling 14, the flexible shaft 2 starts to drive the grinding blade 5 to rotate at a proper speed; then, a stepping motor 9 is started, after speed reduction transmission of a first-stage worm gear reducer 16 and a second-stage worm gear reducer 17, a transmission shaft 10 drives a hydraulic cylinder 6 to do circular motion, the hydraulic cylinder 6 gradually approaches to a polishing blade 5, the polishing blade 5 and a flexible shaft shell 3 gradually enter the hydraulic cylinder 6 from an opening at one end of the hydraulic cylinder 6, and the polishing blade 5 moves in the cylinder while polishing the inner wall of the hydraulic cylinder 6 until the polishing blade 5 reaches the other end of the hydraulic cylinder 6; and finally, closing the stepping motor 9 and the servo motor 1, and taking down the polished hydraulic cylinder 6 to finish the polishing process. If the polishing effect is not good, the steps can be repeated for a plurality of times until the required polishing effect is achieved. Or the rotating speed of the stepping motor 9 is adjusted, the feeding speed of the hydraulic oil cylinder 6 is reduced, and the polishing time is prolonged, so that better polishing precision is achieved. According to the difference of processing parameters, the material of the hydraulic oil cylinder and the like, the grinding blades 5 in different shapes and the flexible shafts 2 with different layers and diameters can be replaced. In the process of polishing equipment operation, need change the distance between planetary reducer 13 and the flexible axle shell 3 through adjusting stud 15 to change the redundant volume of flexible axle 2 length in pore 8, prevent that flexible axle 2 from touching 8 inner walls in pore when rotating, guarantee that flexible axle 2 is in suitable tensioning state, improve driven stationarity.
The above embodiments are merely illustrative of the technical concept and structural features of the present invention, and are intended to be implemented by those skilled in the art, but the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should fall within the scope of the present invention.
Claims (10)
1. The utility model provides a gyration cylinder internal surface equipment of polishing, includes main shaft portion of polishing and bottom plate (7), the main shaft portion of polishing sets up on bottom plate (7), its characterized in that: the main shaft polishing part comprises a servo motor (1), a flexible shaft (2), a flexible shaft shell (3), a flexible shaft shell support (4) and a polishing blade (5), the flexible shaft shell (3) is arc-shaped, the outer diameter of the flexible shaft shell is smaller than the inner diameter of a hydraulic cylinder barrel (6) to be polished, the flexible shaft shell (3) is fixed on a bottom plate (7) through the flexible shaft shell support (4), a hole (8) is formed in the flexible shaft shell (3) along a central shaft, the flexible shaft (2) penetrates through the hole (8), one end of the flexible shaft (2) is fixedly connected with a rotating shaft of the servo motor (1), and the other end of the flexible shaft is fixedly connected with the center of the polishing blade (5);
still include the work piece portion of feeding, the work piece portion of feeding includes step motor (9), transmission shaft (10) and support (11), support (11) are fixed on bottom plate (7), are equipped with first bearing (12) on support (11), wear to establish transmission shaft (10) on first bearing (12), step motor (9) output is connected with transmission shaft (10), and center shaft hole (61) of hydraulic cylinder (6) are fixed on transmission shaft (10), and when the work piece portion of feeding drove hydraulic cylinder (6) and rotates, blade (5) of polishing can remove and polish along hydraulic cylinder (6) internal surface.
2. The apparatus of claim 1 wherein said means for grinding the inside surface of said rotating cylinder comprises: the main shaft polishing part further comprises a planetary reducer (13) and a plum blossom coupling (14), the output end of the servo motor (1) is connected with the input end of the planetary reducer (13), and the output end of the planetary reducer (13) is connected with one end of the flexible shaft (2) through the plum blossom coupling (14).
3. The apparatus of claim 2, wherein: the main shaft polishing part further comprises a double-end stud (15), one end of the double-end stud (15) is connected with the shell of the planetary reducer (13), the other end of the double-end stud is connected with the flexible shaft shell support (4), the distance between the planetary reducer (13) and the flexible shaft shell (3) can be changed by adjusting the double-end stud (15), and therefore the length redundancy of the flexible shaft (2) in the hole channel (8) is changed.
4. The apparatus of claim 3, wherein: the workpiece feeding part further comprises a first-stage worm gear reducer (16) and a second-stage worm gear reducer (17), the output end of the stepping motor (9) is connected with the input end of the first-stage worm gear reducer (16), the output end of the first-stage worm gear reducer (16) is connected with the input end of the second-stage worm gear reducer (17), and the output end of the second-stage worm gear reducer (17) is connected with the transmission shaft (10).
5. The apparatus of claim 4, wherein: realize relative rotation through setting up second bearing (18) between flexible axle (2) and flexible axle shell (3), be close to in flexible axle shell (3) the one end fixedly connected with flexible axle shell end cover (19) of blade (5) of polishing, the outer lane fixed connection of second bearing (18) is between flexible axle shell end cover (19) and flexible axle shell (3), and the one end that is close to blade (5) of polishing on flexible axle (2) still is provided with flexible axle sleeve (20) and lower flexible axle sleeve (21), and the inner circle fixed connection of second bearing (18) is in go up between flexible axle sleeve (20) and lower flexible axle sleeve (21), polish blade (5) pass through bolt (22) with flexible axle (2) fixed connection.
6. The apparatus of claim 5 wherein said means for grinding the inside surface of said rotating cylinder comprises: the lower soft shaft sleeve (21) is fixedly connected to the flexible shaft (2) through a set screw (23), and the upper end and the lower end of the upper soft shaft sleeve (20) are respectively abutted against the polishing blade (5) and the inner ring of the second bearing (18).
7. The apparatus of claim 6, wherein: the hydraulic cylinder barrel (6) is matched with the transmission shaft (10) through keys to realize circumferential fixation, a shaft shoulder (101) and a shaft sleeve (102) are further arranged on the transmission shaft (10), and the hydraulic cylinder barrel (6) is axially fixed between the shaft shoulder (101) and the shaft sleeve (102).
8. The apparatus of claim 7, wherein: the polishing blade (5) is in a polygonal frustum pyramid shape.
9. The apparatus of claim 8 wherein said means for grinding the inside surface of said rotating cylinder comprises: the flexible shaft (2) is a multi-layer steel wire flexible shaft.
10. The apparatus of claim 9 wherein said means for grinding the inside surface of said rotating cylinder comprises: the flexible shaft shell (3) is made of resin for 3D printing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011517761.6A CN112676939A (en) | 2020-12-21 | 2020-12-21 | Rotary cylinder barrel inner surface polishing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011517761.6A CN112676939A (en) | 2020-12-21 | 2020-12-21 | Rotary cylinder barrel inner surface polishing equipment |
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| Publication Number | Publication Date |
|---|---|
| CN112676939A true CN112676939A (en) | 2021-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011517761.6A Pending CN112676939A (en) | 2020-12-21 | 2020-12-21 | Rotary cylinder barrel inner surface polishing equipment |
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| CN (1) | CN112676939A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011125986A (en) * | 2009-12-21 | 2011-06-30 | Saito-Seiki Co Ltd | Surface grinding device of square block |
| CN202185795U (en) * | 2011-07-06 | 2012-04-11 | 梁小平 | Grinding polisher for inner hole of cylinder body |
| CN106891047A (en) * | 2017-04-07 | 2017-06-27 | 东南大学 | One kind bending axial workpiece external cutting processing unit (plant) and cutting working method |
| CN209379973U (en) * | 2018-11-30 | 2019-09-13 | 山东山诚机械科技股份有限公司 | A kind of faying face inside arc surface machining device of bearing block |
| CN210648608U (en) * | 2019-07-05 | 2020-06-02 | 西安工业大学 | Cutter for processing elbow inner hole within 180 degrees |
-
2020
- 2020-12-21 CN CN202011517761.6A patent/CN112676939A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011125986A (en) * | 2009-12-21 | 2011-06-30 | Saito-Seiki Co Ltd | Surface grinding device of square block |
| CN202185795U (en) * | 2011-07-06 | 2012-04-11 | 梁小平 | Grinding polisher for inner hole of cylinder body |
| CN106891047A (en) * | 2017-04-07 | 2017-06-27 | 东南大学 | One kind bending axial workpiece external cutting processing unit (plant) and cutting working method |
| CN209379973U (en) * | 2018-11-30 | 2019-09-13 | 山东山诚机械科技股份有限公司 | A kind of faying face inside arc surface machining device of bearing block |
| CN210648608U (en) * | 2019-07-05 | 2020-06-02 | 西安工业大学 | Cutter for processing elbow inner hole within 180 degrees |
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Application publication date: 20210420 |