CN115256076A - Mechanical processing method for non-interference inner hole grinding - Google Patents
Mechanical processing method for non-interference inner hole grinding Download PDFInfo
- Publication number
- CN115256076A CN115256076A CN202210961889.4A CN202210961889A CN115256076A CN 115256076 A CN115256076 A CN 115256076A CN 202210961889 A CN202210961889 A CN 202210961889A CN 115256076 A CN115256076 A CN 115256076A
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- workpiece
- grinding
- limiting
- freedom
- inner hole
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- 238000003672 processing method Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000003754 machining Methods 0.000 claims description 15
- 210000004907 gland Anatomy 0.000 description 14
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/48—Single-purpose machines or devices for grinding walls of very fine holes, e.g. in drawing-dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The invention provides a mechanical processing method for non-interference inner hole grinding, which is characterized by comprising the following steps: horizontally arranging the workpiece along the direction of the axis of the workpiece, and axially arranging at least two groups of limiting frames at the periphery of the workpiece for limiting the horizontal radial degree of freedom, the vertical radial degree of freedom, the torsional degree of freedom and the pitching degree of the workpiece; then arranging a limiting plate at one end head of the workpiece, wherein the limiting plate is used for limiting the workpiece to advance towards the side close to the end head of the workpiece along the axial direction; flexibly connecting the other end of the workpiece with a main shaft of a machine tool to transmit torque; and starting the machine tool, and grinding the workpiece through the grinding head to form an inner hole. The method can effectively isolate the vibration interference caused by the power of the main shaft of the machine tool to the rotation of the workpiece, and ensure the roughness and cylindricity of the inner hole of the workpiece, thereby improving the grinding precision of the workpiece.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a machining method for grinding an inner hole without interference.
Background
In the field of machining, many workpieces need to be subjected to inner hole machining. For long cylinder parts with high requirements on the cylindricity and the roughness of an inner hole, the common inner hole processing method in the prior art is that a grinding machine clamping jaw clamps an outer circle at one end of a workpiece to drive the workpiece to rotate, the grinding machine clamping jaw is rigidly connected with a power main shaft and the workpiece, a center frame is arranged on the outer circle at the other side of the workpiece, a hundred (thousand) parts meter is used for aligning the workpiece, and a grinding head grinds the inner hole of the workpiece.
Disclosure of Invention
The present invention is made to solve the above problems, and an object of the present invention is to provide a machining method for grinding an inner hole without interference, so as to isolate vibration interference caused by the power of a main shaft of a machine tool to the rotation of a workpiece, thereby improving the grinding accuracy of the inner hole of the workpiece.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a mechanical processing method for grinding an inner hole without interference, which is characterized by being used for processing the inner hole of a cylindrical workpiece and is characterized by comprising the following steps:
1) Limiting the workpiece:
firstly, a workpiece is horizontally arranged along the direction of the axis of the workpiece, and at least two groups of limiting frames are axially arranged on the periphery of the workpiece and are used for limiting the horizontal radial degree of freedom, the vertical radial degree of freedom, the torsional degree of freedom and the pitching degree of freedom of the workpiece;
then arranging a limiting plate at one end head of the workpiece, wherein the limiting plate is used for limiting the workpiece to advance towards the side close to the end head of the workpiece along the axial direction;
so far, the rotation freedom of the workpiece and the advancing of the workpiece to the side close to the other end of the workpiece along the axial direction are not limited;
2) Flexibly connecting the other end of the workpiece with a main shaft of a machine tool to transmit torque;
3) And starting the machine tool, and grinding the workpiece through the grinding head to form an inner hole.
Further, the machining method of the non-interference inner hole grinding provided by the invention can also have the following characteristics: the flexible connection between the workpiece and the machine tool spindle is a universal joint flexible connection.
Further, the machining method of the non-interference inner hole grinding provided by the invention can also have the following characteristics: the limiting frames arranged on the periphery of the workpiece are divided into two groups, the two groups of limiting frames are respectively arranged corresponding to the head end part and the tail end part of the workpiece, and the limiting plate is arranged on the limiting frame positioned at the tail end part of the workpiece.
The invention has the following functions and effects:
according to the machining method for grinding the inner hole without interference, provided by the invention, the power torque of the machine tool is transmitted in a universal joint flexible connection mode, and at least two groups of limiting frames and limiting plates are arranged on the periphery of the workpiece along the axial direction.
Drawings
FIG. 1 is a front view of a structure used in a machining method without interference bore grinding in an embodiment of the present invention;
FIG. 2 is a view in the direction C of the structure shown in FIG. 1;
FIG. 3 is a cross-sectional view of section B-B of the structure shown in FIG. 1;
fig. 4 is a three-dimensional perspective view of a structure used in a machining method without interference of inner hole grinding in the embodiment of the present invention.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the following embodiments are specifically described in the technical scheme of the invention with reference to the attached drawings.
A mechanical processing method without interference inner hole grinding is used for processing an inner hole of a cylindrical workpiece and comprises the following steps:
1) Limiting the workpiece:
firstly, a workpiece is horizontally arranged along the direction of the axis of the workpiece, and at least two groups of limiting frames are arranged on the periphery of the workpiece along the axial direction of the workpiece to limit the horizontal radial degree of freedom, the vertical radial degree of freedom, the torsional degree of freedom and the pitching degree of freedom of the workpiece. Then, a stopper plate is disposed at one end head of the workpiece, and the workpiece is restricted from advancing in the axial direction to the side near the end head of the workpiece. Up to this point, the degree of freedom of rotation of the workpiece and the advancement of the workpiece in the axial direction to the side near the other end of the workpiece are not restricted.
Preferably, the limiting frames arranged on the periphery of the workpiece are divided into two groups, the two groups are respectively positioned on the middle section and one end part of the workpiece, and the limiting plate is arranged on the limiting frame positioned on the end part of the workpiece.
2) And flexibly connecting the other end of the workpiece with a main shaft of the machine tool to transmit torque. The flexible connection of the workpiece and the main shaft of the machine tool is a universal joint flexible connection.
3) And starting the machine tool, and grinding the workpiece through the grinding head to form an inner hole.
Referring to fig. 1 to 4, the present embodiment illustrates the case of implementing the machining method without the interference inner hole grinding by the structure of fig. 1 to 4, but the present invention is not limited thereto, and the following is only an embodiment, and equivalent changes and substitutions made by adopting other structures in the machining method without the interference inner hole grinding are also within the spirit of the machining method without the interference inner hole grinding of the present invention.
The gimbal flexure joint of the present embodiment is implemented by a flexure joint mechanism as shown in fig. 1, 3 and 4. The flexible connection mechanism comprises a universal joint input shaft 1, a universal joint core 2, a universal joint output shaft 3, a universal joint support screw 4, a spring 5, a gland 6 and a compression screw 7.
One end of the universal joint input shaft 1 is provided with a main shaft mounting hole 11 for being mounted in a matched manner with a main shaft of a machine tool. The other end of the universal joint input shaft 1 is provided with a first groove 12, and screw holes are symmetrically formed in the groove walls of two sides of the first groove 12. One end of the universal joint output shaft 3 is provided with a second groove 31, screw holes are symmetrically formed in the groove walls of two sides of the second groove 31, and an extension shaft 32 is arranged at the other end of the universal joint output shaft 3. The universal joint input shaft 1 is arranged in a vertical state according to the groove wall of the first groove 12, the universal joint output shaft 3 is arranged in a horizontal state according to the groove wall of the second groove 31, and the universal joint core 2 is arranged in the first groove 12 and is simultaneously located in the second groove 31.
The gimbal core 2 has a spherical structure, and may be a whole sphere or a table as used in the present embodiment (as shown in fig. 4). Preferably, the joint core 2 is provided as a hollow structure.
The universal joint support screws 4 are four, the four universal joint support screws 4 are correspondingly installed in the four screw holes of the first groove 12 and the second groove 31 through threaded connection, the universal joint core 2 is limited in a gap space formed by the end portions of the four universal joint support screws 4, and the spherical surface of the universal joint core 2 can be in rotatable contact with the end portions of the universal joint support screws 4 by adjusting the insertion depth of the four universal joint support screws 4.
The lateral wall of the gland 6 is provided with a plurality of gland screw holes and is arranged at the head end of the workpiece through a compression screw 7. The gland screw holes are four in the embodiment and are uniformly distributed in an annular array, the compression screws 7 are in threaded connection with the gland screw holes, and the four compression screws 7 are compressed from the outer wall of the workpiece, so that the gland 6 is fixed at the end of the workpiece.
The middle part of the gland 6 is provided with a central gland through hole 61, and the extension shaft 32 of the universal joint output shaft 3 is inserted into the central gland through hole 61. The gland center through hole 61 is any one of a triangular hole, a square hole, a triangular star-shaped hole, a rectangular star-shaped hole and a pentagonal star-shaped hole, and the shape of the extension shaft 32 is matched with that of the gland center through hole 61. In the present embodiment, the central through hole 61 of the press cover is a square hole, and the extension shaft 32 is a square column. The universal joint output shaft 3 is connected with the gland central through hole 61 for transmitting torque, but the extension shaft 32 is not limited in axial movement in the gland central through hole 61. When the universal joint output shaft 3 rotates, the universal joint output shaft 3 drives the gland to rotate, so that the workpiece is driven to rotate. The spring 5 is sleeved on the periphery of the extension shaft 32, and the end of the spring 5 is contacted with the outer surface of the gland 6.
In this embodiment, the two limiting brackets arranged on the outer periphery of the workpiece along the axial direction of the workpiece are the center brackets 8 shown in fig. 1 to 4, and the limiting plate is the stopper 9 shown in fig. 1 to 2.
The two center frames 8 are respectively fixed on the machine tool body. Referring to fig. 3 and 4, the center frame 8 includes a center ring 81, an extension frame 82, a support frame 83, and an adjustment bolt 84. The support frame 83 is connected below the center ring 81 for supporting, and the center frame 8 is mounted on the machine tool body by connecting the support frame 83 with bolts when being mounted. The periphery of center ring 81 is connected with three extension frame 82, constitutes 120 degrees contained angles between the adjacent extension frame 82 and the centre of a circle of center ring 81, and extension frame 82 has seted up the through screw hole, and the through screw hole link up the inner wall of center ring 81. In the center frame 8, the center ring 81, the extension frame 82, and the support frame 83 are integrally structured, and the adjusting bolt 84 is detachably structured. Three adjusting bolts 84 are correspondingly installed in the through screw holes by screw connection, and the ends of the adjusting bolts 84 protrude to the inside of the center ring 81. As shown in fig. 1 and 4, two center frames 8 are provided corresponding to the workpiece head end portion and the workpiece tail end portion, respectively. The workpiece is positioned in the central rings 81 of the two central frames and limited in a gap space formed by the ends of a plurality of adjusting bolts 84, and the workpiece can rotate around the axial lead of the workpiece in the gap space by adjusting the inserting depth of the adjusting bolts, namely the workpiece is in rotatable contact with the adjusting bolts 84. Further, the end of the adjusting bolt 84 can be wrapped with a soft material layer according to actual conditions, such as a cloth cover, a sponge cover and the like, or a sponge layer, a cloth layer and the like are adhered, so that the outer wall of the workpiece is further protected, and friction and scratch are prevented.
The stopper 9 is fixed to the center frame 8 at the rear end of the workpiece by two bolts 10 to be in contact with the end face of the rear end of the workpiece 100, and the stopper 9 serves to restrict the workpiece 100 from moving axially to the right as viewed in fig. 1. In this embodiment, the stopper 9 is made of teflon.
The mechanical processing method for the non-interference inner hole grinding of the embodiment comprises the following specific operation steps:
and assembling the universal joint input shaft 1, the universal joint core 2, the universal joint output shaft 3, the universal joint support screw 4 and the spring 5 of the flexible connecting mechanism, and integrally installing the assembled universal joint input shaft, the universal joint core, the universal joint support screw 4 and the spring 5 on a main shaft of a machine tool. Then, a gland 6 is mounted on one end of the workpiece 100 by a compression screw 7. Then, two center frames 8 and stoppers 9 are installed to limit the workpiece 100, so that the workpiece can rotate along its axis and move to the left side as shown in fig. 1 along the axial direction. Then, the extension shaft 32 of the universal joint output shaft 3 is inserted into the gland center through hole 61 to transmit torque. And finally, starting the machine tool, and grinding the workpiece to form an inner hole through a grinding head arranged on the machine tool. The method can effectively isolate the vibration interference caused by the rotation of the workpiece by the power of the main shaft of the machine tool, thereby improving the grinding precision of the roughness and the cylindricity of the inner hole of the workpiece.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A mechanical processing method without interference inner hole grinding is used for processing inner holes of cylindrical workpieces, and is characterized by comprising the following steps:
1) Limiting the workpiece:
firstly, horizontally arranging a workpiece along the direction of the axis of the workpiece, and axially arranging at least two groups of limiting frames at the periphery of the workpiece for limiting the horizontal radial degree of freedom, the vertical radial degree of freedom, the torsional degree of freedom and the pitching degree of freedom of the workpiece;
then arranging a limiting plate at one end head of the workpiece, wherein the limiting plate is used for limiting the workpiece to advance towards the side close to the end head of the workpiece along the axial direction;
so far, the rotation freedom of the workpiece and the advancing of the workpiece to the side close to the other end of the workpiece along the axial direction are not limited;
2) Flexibly connecting the other end of the workpiece with a main shaft of a machine tool to transmit torque;
3) And starting the machine tool, and grinding the workpiece through the grinding head to form an inner hole.
2. The method of non-interference internal bore grinding machining according to claim 1, characterized by:
the flexible connection between the workpiece and the machine tool spindle is a universal joint flexible connection.
3. The method of non-interference bore grinding machining of claim 1 wherein:
wherein, arrange the spacing of work piece periphery is two groups, corresponds the head end portion and the tail end position setting of work piece respectively, the limiting plate is installed and is located on the spacing of the tail end of work piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210961889.4A CN115256076A (en) | 2022-08-11 | 2022-08-11 | Mechanical processing method for non-interference inner hole grinding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210961889.4A CN115256076A (en) | 2022-08-11 | 2022-08-11 | Mechanical processing method for non-interference inner hole grinding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115256076A true CN115256076A (en) | 2022-11-01 |
Family
ID=83750050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210961889.4A Pending CN115256076A (en) | 2022-08-11 | 2022-08-11 | Mechanical processing method for non-interference inner hole grinding |
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| Country | Link |
|---|---|
| CN (1) | CN115256076A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105033794A (en) * | 2015-09-01 | 2015-11-11 | 李建阳 | Double-end inner-hole grinding machine |
| CN208262595U (en) * | 2018-06-11 | 2018-12-21 | 洛阳高测精密机械有限公司 | A kind of main shaft housing inner hole mill clamping device for processing |
| CN110026896A (en) * | 2019-06-03 | 2019-07-19 | 南京荣鑫机械制造有限公司 | A kind of support roller inner bore machining device and processing method |
| CN110103090A (en) * | 2019-06-03 | 2019-08-09 | 南京荣鑫机械制造有限公司 | A kind of self-centering processing unit (plant) of support roller |
| CN214109823U (en) * | 2020-12-23 | 2021-09-03 | 安阳鑫盛机床股份有限公司 | Main shaft hole grinding machine tool |
-
2022
- 2022-08-11 CN CN202210961889.4A patent/CN115256076A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105033794A (en) * | 2015-09-01 | 2015-11-11 | 李建阳 | Double-end inner-hole grinding machine |
| CN208262595U (en) * | 2018-06-11 | 2018-12-21 | 洛阳高测精密机械有限公司 | A kind of main shaft housing inner hole mill clamping device for processing |
| CN110026896A (en) * | 2019-06-03 | 2019-07-19 | 南京荣鑫机械制造有限公司 | A kind of support roller inner bore machining device and processing method |
| CN110103090A (en) * | 2019-06-03 | 2019-08-09 | 南京荣鑫机械制造有限公司 | A kind of self-centering processing unit (plant) of support roller |
| CN214109823U (en) * | 2020-12-23 | 2021-09-03 | 安阳鑫盛机床股份有限公司 | Main shaft hole grinding machine tool |
Non-Patent Citations (1)
| Title |
|---|
| 陈顺华等: "《汽车底盘结构与原理》", 30 April 2022, 合肥工业大学出版社, pages: 193 * |
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