CN107900687B - Deep hole boring and rolling composite machining tool - Google Patents
Deep hole boring and rolling composite machining tool Download PDFInfo
- Publication number
- CN107900687B CN107900687B CN201711410461.6A CN201711410461A CN107900687B CN 107900687 B CN107900687 B CN 107900687B CN 201711410461 A CN201711410461 A CN 201711410461A CN 107900687 B CN107900687 B CN 107900687B
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- Prior art keywords
- boring
- rolling
- boring cutter
- cutter body
- roller
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- 238000005096 rolling process Methods 0.000 title claims abstract description 77
- 238000003754 machining Methods 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 229920006324 polyoxymethylene Polymers 0.000 claims description 20
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 15
- -1 polyoxymethylene Polymers 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 14
- 229910045601 alloy Inorganic materials 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/02—Machine tools for performing different machining operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/06—Metal-working plant comprising a number of associated machines or apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention belongs to the technical field of deep hole machining engineering, in particular relates to a deep hole boring and rolling composite machining tool, and solves the problems that the surface of a machined workpiece is easy to scratch, the auxiliary time is long, the machining effect is not ideal, a roller is easy to fail and the like when the existing boring and rolling tool is retracted. The boring system comprises a boring cutter body, a boring cutter and a rough boring cutter, wherein the boring cutter body is provided with a finish boring cutter and a rough boring cutter, the rolling system comprises a rolling cutter body, the rolling cutter body is provided with a roller, and the finish boring cutter can be radially fed or radially retracted on the boring cutter body and the roller on the rolling cutter body. The invention has compact structure and simple operation, realizes twice boring and twice rolling, reduces the auxiliary time during production and improves the production efficiency.
Description
Technical Field
The invention belongs to the technical field of deep hole machining engineering, and particularly relates to a deep hole boring and rolling composite machining tool.
Background
For the precise deep hole machining with the aperture larger than 30mm, at present, the traditional machining process of rough boring, semi-finish boring, finish boring and honing is often adopted, each procedure is independently carried out, and the production efficiency is extremely low. Because some workpieces have higher requirements on the strength, the hardness and the wear resistance of the surfaces at the same time of higher precision, the rolling process causes the metal surface layer to generate plastic deformation and the surface layer tissue to be cold hardened, and more working procedures are adopted at present. The boring and rolling combined machining process is adopted, but due to the structural reasons of the existing boring and rolling tool, the serious problem that the finish boring tool and the roller scratch the surface of a machined workpiece when the tool is withdrawn after machining is finished, and the problems that the auxiliary working time is long, the machining effect is not ideal and the roller is easy to fail are also caused.
Disclosure of Invention
The invention provides a deep hole boring and rolling composite machining tool, which aims to solve the problems that when precise deep hole machining is carried out, the production efficiency of the traditional machining process is low, when the existing boring and rolling tool is adopted, the surface of a machined workpiece is scratched during tool withdrawal, the auxiliary time is long, the machining effect is not ideal, the roller is easy to fail and the like.
In order to overcome the problems, the invention adopts the following technical scheme:
the deep hole boring and rolling composite machining tool comprises a boring system, a rolling system and a feeding system, wherein the boring system is connected with the rolling system, the boring system comprises a boring cutter body, a finish boring cutter and a rough boring cutter are arranged on the boring cutter body, the rolling system comprises a rolling cutter body, a roller is arranged on the rolling cutter body, and the finish boring cutter and the roller on the boring cutter body can be simultaneously and radially fed or radially retracted.
Further, the boring pin system comprises a fine boring cutter row, the boring cutter body is radially provided with a groove, and the fine boring cutter row is inserted in the groove; the fine boring cutter is arranged on the fine boring cutter row, a through hole is axially formed in the boring cutter body, and a radial position adjusting piece of the fine boring cutter row is arranged in the through hole.
Further, the boring pin system further comprises a plurality of hard alloy guide blocks and a plurality of polyoxymethylene guide blocks I, wherein the hard alloy guide blocks are circumferentially and uniformly arranged on the boring cutter body, the polyoxymethylene guide blocks I are circumferentially and uniformly arranged on the boring cutter body, the radial maximum sizes of the hard alloy guide blocks and the polyoxymethylene guide blocks I are respectively consistent with the radial maximum sizes of the rough boring cutter and the finish boring cutter, and the installation positions of the hard alloy guide blocks and the polyoxymethylene guide blocks I are respectively delayed from the installation positions of the rough boring cutter and the finish boring cutter.
Further, the rollers are arranged in two rows, each row of rollers comprises a plurality of rollers which are circumferentially and uniformly distributed on the rolling cutter body, each row of rollers can rotate, the rollers are conical rollers, and the center line of each conical roller is parallel to the center line of the rolling cutter body.
Furthermore, the left end of the rolling cutter body is sleeved with a fixed roller path body, the roller path body is provided with two rows of grooves, the positions and the shapes of the grooves correspond to those of the two rows of tapered rollers, a retainer which can slide relative to the roller path body is sleeved outside the roller path body, the retainer is provided with a through groove for installing the tapered rollers, and the tapered rollers can move along the direction of parallel axes relative to the rolling cutter body.
Further, the right end of the rolling cutter body is uniformly and fixedly provided with a plurality of polyoxymethylene guide blocks II along the circumferential direction.
Further, the feeding system comprises a screw rod, a thread bush, a movable block, a sealing ring, a reset spring, a front end cover and a rear end cover, wherein the thread bush is embedded at the left end of the boring cutter body, the screw rod is screwed into the boring cutter body through the thread bush, the front end cover capable of sliding relative to the boring cutter body in the axial direction is sleeved at the right end of the boring cutter body, the right end of the front end cover can act on the retainer, a first square groove is formed in the radial direction of the end part of the right end of the boring cutter body, a second square groove is formed in the position of the front end cover corresponding to the first square groove, two ends of the movable block are respectively embedded in the first square groove and the second square groove, the end part of the screw rod can act on the movable block, the rear end cover is sleeved on the rolling cutter body and can slide relative to the rolling cutter body, the sealing ring is arranged on the contact surface of the rear end cover and the rolling cutter body, the left end of the rear end cover can act on the retainer, and the right end of the rear end cover is provided with the reset spring in a compressed state.
Further, the screw is provided with a step surface, the screw rod parts on two sides of the step surface act on the bottom of the fine boring cutter row to complete radial feeding of the fine boring cutter and reset the bottom of the fine boring cutter row to have inclination matched with the fine boring cutter row.
Further, the boring system and the rolling system are fixedly connected through threads between the boring cutter body and the rolling cutter body.
Further, the taper of the tapered rollers and the roller path body is 1:20, and each row has 6 tapered rollers.
When the screw is screwed in, the fine boring cutter row and the tapered roller can be fed, and when the screw is unscrewed, the tapered roller is pushed by the reset spring to move leftwards so as to retract radially, and meanwhile, the fine boring cutter retracts radially, so that the purpose that the surface of a machined workpiece is not scratched when the tool withdraws from the workpiece is achieved; the two rows of tapered rollers play a role in rolling and rounding, and each guide block plays a role in supporting and relieving the radial force of the processing tool.
The invention has the advantages that two boring cutters and two rows of rollers are integrated, one rough boring, one fine boring and two rolling processes are realized, and the invention has simple structure and good processing performance; after machining, the surface roughness of the workpiece can reach Ra0.4-0.2 while the surface hardness of the workpiece is improved. In order to prevent the boring and rolling composite machining tool from scratching the surface of a machined workpiece during tool withdrawal, the finish boring tool can be retracted radially, and meanwhile, the tapered roller can also fall into the groove of the raceway body to realize radial retraction. In order to reduce the auxiliary time, the finish boring cutter and the tapered roller of the deep hole boring and rolling composite processing tool can be radially fed and withdrawn simultaneously only by twisting the screw rod during operation. The rollers with rolling function are two rows, the front row mainly has rolling function, the rear row mainly has rounding function, and the rollers adopt a taper form, so that the impact of workpieces and the rollers is reduced, and the service life of the rollers is prolonged.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a view in the direction A of FIG. 1;
FIG. 3 is a cross-sectional view taken at B-B of FIG. 1;
fig. 4 is a cross-sectional view at C-C of fig. 2.
In the figure: the device comprises a 1-screw, a 2-thread bush, a 3-hard alloy guide block, a 4-polyoxymethylene guide block I, a 5-boring cutter body, a 6-movable block, a 7-taper roller, an 8-thrust bearing, a 9-sealing ring, a 10-polyoxymethylene guide block II, a 11-rolling cutter body, a 12-return spring, a 13-rear end cover, a 14-sleeve, a 15-raceway body, a 16-supporting pin, a 17-retainer, a 18-front end cover, a 19-fine boring cutter row, a 20-fine boring cutter and a 21-coarse boring cutter.
Detailed Description
Specific embodiments of the present invention will be further described with reference to the accompanying drawings.
The invention provides a deep hole boring and rolling composite machining tool which comprises a screw 1, a thread bush 2, a rough boring cutter 21, a hard alloy guide block 3, a fine boring cutter row 19, a fine boring cutter 20, a polyoxymethylene guide block I4, a boring cutter body 5, a movable block 6, a front end cover 18, a conical roller 7, a retainer 17, a supporting pin 16, a roller path body 15, a thrust bearing 8, a sleeve 14, a rear end cover 13, a sealing ring 9, a reset spring 12 and a rolling cutter body 11; the boring and rolling composite processing cutter mainly comprises a boring system, a rolling system and a feeding system;
the boring system comprises a hard alloy guide block 3, a polyoxymethylene guide block I4, a boring cutter body 5, a fine boring cutter row 19, a fine boring cutter 20 and a rough boring cutter 21. The left end of the boring cutter body 5 is connected with the thread bush 2 through a screw, and the rough boring cutter 21 is arranged on the boring cutter body 5. The boring cutter body 5 is radially provided with a groove, and the fine boring cutter row 19 is inserted on the boring cutter body 5; the bottom of the fine boring cutter row 19 is provided with a part of taper, and the fine boring cutter 20 is arranged on the fine boring cutter row 19. The hard alloy guide blocks 3 and the polyformaldehyde guide blocks I4 are respectively and uniformly distributed on the boring cutter body 5 in the circumferential direction, the maximum radial sizes of the hard alloy guide blocks 3 and the polyformaldehyde guide blocks I4 are respectively consistent with the maximum radial sizes of the rough boring cutter and the finish boring cutter, and the hard alloy guide blocks 3 and the polyformaldehyde guide blocks I4 are fixedly arranged on the boring cutter body 5 through threaded connection and respectively lag behind the rough boring cutter 20 and the finish boring cutter 21 to play roles of supporting and guiding.
The rolling system comprises tapered rollers 7, a thrust bearing 8, a polyoxymethylene guide block II 10, a rolling cutter body 11, a raceway body 15, a supporting pin 16 and a retainer 17. The left end of the rolling cutter body 11 is provided with a threaded blind hole, and the boring cutter body 5 is connected with the rolling cutter body 11 through threads. The tapered rollers 7 are arranged in two rows, and each row is provided with 6 tapered rollers 7 which respectively play roles of rolling and rounding; the tapered roller 7, the roller path body 15 and the supporting pin 16 are all hardened to meet certain service life requirements. The roller path body 15 is thermally arranged at the left end of the rolling cutter body 11; the center line of the tapered roller 7 is parallel to the rotation center of the rolling cutter body 11 during assembly, so that the use precision is high, 3 polyoxymethylene guide blocks II are uniformly distributed and fixedly installed on the right side of the rolling cutter body 11 along the circumferential direction by using screws, and the radial dimension of the polyoxymethylene guide blocks II is the dimension required in the tolerance range of a machined workpiece.
The feeding system comprises a screw 1, a threaded sleeve 2, a movable block 6, a sealing ring 9, a return spring 12, a rear end cover 13, a sleeve 14 and a front end cover 18. The boring cutter body 5 is provided with a square groove in the radial direction, the movable block 6 is installed through the square groove, and the sealing ring 9 and the rear end cover 13 are sleeved on the rolling cutter body 11 and can axially slide; the front end cover 18 is sleeved on the boring cutter body 5 and can axially slide; the screw 1 is screwed into the boring and rolling composite tool rightwards through the thread bush 2, and in the screwing process, the fine boring tool 20 is driven to radially displace to enable the fine boring tool to be in a working position, and the right end of the screw 1 is contacted with the movable block 6 to enable the movable block 6 to move rightwards along the axial direction. The movable block 6 is simultaneously arranged in the square groove of the front end cover 15, and the front end cover 18 moves rightwards along with the axial direction of the movable block 6. The front end cover 18 drives the retainer 17, the tapered roller 7, the supporting pin 16, the sleeve 14 and the rear end cover 13 to move axially to the right, so that the finish boring cutter 20 and the tapered roller 7 can be fed simultaneously. After the processing is finished, the screw 1 is unscrewed leftwards; in the process of screwing out the screw 1, the radial size of the fine boring cutter row 19 is reduced, so that the withdrawal is realized; meanwhile, due to the action of the return spring 12, after the front end cover 18 loses the acting force of the screw 1, the return spring 12 pushes the rear end cover 13 and the sealing ring 9 to move leftwards along the axial direction. The rear end cover 13 drives the sealing ring 9, the sleeve 14, the supporting pin 16, the tapered roller 8, the retainer 17, the front end cover 18 and the movable block 6 to move leftwards, and in the moving process, the tapered roller 7 falls into the groove of the raceway body 15, so that radial withdrawal of the tapered roller 7 is realized. The sleeve is on the right side of the roller so that it does not move to the right. The retainer fixes the roller at a definite position of the circumference, and the roller works normally under the combined action of the retainer and the retainer. The sleeve and the retainer can be of an integral structure or can be connected in a split mode.
The materials of the tapered roller, the roller path body and the supporting pin are GCr15, and HRC reaches 63-67 after heat treatment.
The taper roller and the roller path body are provided with taper angles of 1:20. The rows each have 6 tapered rollers which are assembled in pairs to reduce errors.
The return spring is always in a compressed state.
The boring system is fixedly connected with the rolling system through threads between the boring cutter body and the rolling cutter body; grooves which are uniformly distributed on the outer walls of the retainer and the sleeve and used for the cutting fluid to pass through are formed, so that cooling and lubrication during boring processing are realized, and chips are flushed to the front end of a workpiece and flow out; and the right end of the rolling cutter body is connected with a boring bar of the machine tool through rectangular threads. The thread sleeve is fixed at the left end of the boring cutter body through a screw.
Claims (5)
1. The deep hole boring and rolling composite machining tool is characterized by comprising a boring system, a rolling system and a feeding system, wherein the boring system is connected with the rolling system, the boring system comprises a boring cutter body (5), a finish boring cutter (20) and a rough boring cutter (21) are arranged on the boring cutter body (5), the rolling system comprises a rolling cutter body (11), a roller is arranged on the rolling cutter body (11), and the finish boring cutter (20) and the roller on the rolling cutter body (11) can be simultaneously and radially fed or radially retracted;
the boring system comprises a fine boring cutter row (19), the boring cutter body (5) is radially provided with a groove, and the fine boring cutter row (19) is inserted in the groove; the fine boring cutter (20) is arranged on the fine boring cutter row (19), a through hole is axially formed in the boring cutter body (5), and a radial position adjusting piece of the fine boring cutter row is arranged in the through hole;
the rollers are arranged in two rows, each row of rollers comprises a plurality of rollers which are circumferentially and uniformly distributed on the rolling cutter body (11), each row of rollers can rotate, each roller is a conical roller (7), and the central line of the conical roller (7) is parallel to the central line of the rolling cutter body (11); the rolling cutter body (11) is sleeved and fixed with a roller path body (15), two rows of grooves are formed in the roller path body (15), the positions and the shapes of the grooves correspond to those of two rows of tapered rollers, a sliding retainer (17) capable of oppositely sliding the roller path body (15) is sleeved outside the roller path body (15), the retainer (17) is provided with a through groove for installing the tapered rollers (7), and the tapered rollers can move along the direction of parallel axes relative to the rolling cutter body;
the feeding system comprises a screw (1), a thread bush (2), a movable block (6), a sealing ring (9), a reset spring (12), a front end cover (18) and a rear end cover (13), wherein the thread bush (2) is embedded at the left end of the boring cutter body (5), the screw (1) is screwed into the boring cutter body (5) through the thread bush (2), the front end cover (18) capable of axially sliding relative to the boring cutter body (5) is sleeved at the right end of the boring cutter body (5), the right end of the front end cover (18) can act on a retainer (17), a first square groove is formed in the radial direction of the end part of the right end of the boring cutter body (5), a second square groove is formed in the position of the front end cover (18) corresponding to the first square groove, the two ends of the movable block (6) are respectively embedded in the first square groove and the second square groove, the end part of the screw (1) can act on the movable block (6), the rear end cover (13) is sleeved on the rolling cutter body (11) and can act on the rolling cutter body (11) relatively, the right end cover (13) can be in a state of being in contact with the rolling cutter body (13), and the right end cover (13) can be in a state of the rolling cutter body (13) is arranged; the screw is provided with a step surface, radial feeding and resetting of the fine boring cutter (20) are completed by acting on the bottom of the fine boring cutter row (19) through screw rod parts on two sides of the step surface, and the bottom of the fine boring cutter row is provided with a slope matched with the fine boring cutter row.
2. The deep hole boring and rolling composite processing tool according to claim 1, wherein the boring system further comprises a plurality of hard alloy guide blocks (3) and a plurality of polyoxymethylene guide blocks I (4), the hard alloy guide blocks (3) are circumferentially and uniformly distributed on the boring cutter body (5), the polyoxymethylene guide blocks I (4) are circumferentially and uniformly distributed on the boring cutter body (5), the radial maximum sizes of the hard alloy guide blocks (3) and the polyoxymethylene guide blocks I (4) are respectively consistent with the radial maximum sizes of the rough boring cutter (21) and the finish boring cutter (20), and the installation positions of the hard alloy guide blocks (3) and the polyoxymethylene guide blocks I (4) are respectively delayed from the installation positions of the rough boring cutter (21) and the finish boring cutter (20).
3. The deep hole boring and rolling composite processing tool according to claim 2, wherein a plurality of polyoxymethylene guide blocks II (10) are uniformly and fixedly arranged at the right end of the rolling cutter body (11) along the circumferential direction.
4. A deep hole boring and rolling composite processing tool according to claim 3, characterized in that the boring system and the rolling system are fixedly connected through threads between the boring cutter body (5) and the rolling cutter body (11).
5. The deep hole boring and rolling composite machining tool according to claim 4, wherein the taper of the tapered roller (7) and the taper of the raceway body (15) are 1:20, and each row has 6 tapered rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711410461.6A CN107900687B (en) | 2017-12-23 | 2017-12-23 | Deep hole boring and rolling composite machining tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711410461.6A CN107900687B (en) | 2017-12-23 | 2017-12-23 | Deep hole boring and rolling composite machining tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107900687A CN107900687A (en) | 2018-04-13 |
| CN107900687B true CN107900687B (en) | 2024-02-13 |
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ID=61870847
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711410461.6A Active CN107900687B (en) | 2017-12-23 | 2017-12-23 | Deep hole boring and rolling composite machining tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN107900687B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108673151B (en) * | 2018-07-10 | 2023-05-19 | 河南理工大学 | Deep hole scraping and rolling composite device for bidirectional machining |
| CN110270698B (en) * | 2019-07-02 | 2020-08-25 | 杭州长行机械制造有限公司 | Combined boring cutter rolling tool |
| CN116237769B (en) * | 2022-12-29 | 2024-02-06 | 韶关市龙润工业技术有限公司 | Deep hole boring tool |
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| US3795957A (en) * | 1972-02-26 | 1974-03-12 | A Steusloff | Apparatus for boring and burnishing internal cylindrical surfaces of metallic workpieces |
| GB1427895A (en) * | 1973-09-17 | 1976-03-10 | Heller Verwaltungsges | Combined rough machining and smoothing roller boring tool |
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| Publication number | Publication date |
|---|---|
| CN107900687A (en) | 2018-04-13 |
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