CN112338602A - Fine boring fixture for turbine bearing seat on lathe - Google Patents
Fine boring fixture for turbine bearing seat on lathe Download PDFInfo
- Publication number
- CN112338602A CN112338602A CN202011187378.9A CN202011187378A CN112338602A CN 112338602 A CN112338602 A CN 112338602A CN 202011187378 A CN202011187378 A CN 202011187378A CN 112338602 A CN112338602 A CN 112338602A
- Authority
- CN
- China
- Prior art keywords
- plunger
- hole
- turbine bearing
- liquid plastic
- mandrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 239000004033 plastic Substances 0.000 claims abstract description 19
- 239000002985 plastic film Substances 0.000 claims abstract description 18
- 229920006255 plastic film Polymers 0.000 claims abstract description 18
- 230000000903 blocking effect Effects 0.000 claims abstract description 5
- 241001441571 Hiodontidae Species 0.000 claims 2
- 238000003754 machining Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention provides a fine boring fixture of a turbine bearing seat on a lathe, which comprises a liquid plastic thin-wall sleeve, a mandrel, a locking screw, a morse taper shank, a plunger, a pressurizing screw and a blocking screw, wherein the mandrel comprises a connecting disc and a connecting cylinder which are integrally formed, the liquid plastic thin-wall sleeve is matched with the connecting cylinder of the mandrel, the morse taper shank is connected with the connecting disc of the mandrel, a channel is arranged in the spindle, a first through hole communicated with the channel is arranged in the radial direction of the connecting disc, the end surface of the connecting disc is provided with a second through hole communicated with the channel, the radial direction of the connecting cylinder is provided with a plurality of third through holes communicated with the channel, a plunger is matched at the first through hole, the top end of the plunger is connected with a pressurizing screw, the pressurizing screw is in threaded connection with the first through hole of the channel, and the second through holes are provided with plugging screws, and the third through holes are communicated with the interior of the liquid plastic film sleeve. The invention has novel structure, convenient assembly and disassembly and firm clamping, and ensures the stability of the processing precision.
Description
Technical Field
The invention belongs to the technical field of lathe fixtures, and particularly relates to a fine boring fixture for a turbine bearing seat on a lathe.
Background
The turbine bearing seat is used for assembling the bearing and is connected with the machine body, so that the precision requirement is high, and the turbine bearing seat has a certain protection effect on the bearing. The bearing seat mainly plays a role of supporting the shaft, and parts are relatively heavy in load, easy to vibrate and easy to damage.
The turbine bearing seat belongs to shaft sleeve type parts, is a thin-wall revolving body, many places distribute porose and groove on it, inside has three ladder through-hole, because the part receives the load great, and easily arouse vibrations, destroy easily, and be thin-wall complicated part, it is difficult to realize to utilize casting technique, for toughness and the impact strength of reinforcing turbine bearing seat, obtain fibrous texture, the forging should be selected for use to the blank, for improving production efficiency, so select the die forging, need multiple anchor clamps cooperation clamping when current anchor clamps carry out the aperture process of machining finish boring one end to this part, and it is not good to press from both sides tight effect, can make the part produce too big deformation even, the machining precision is low, be unfavorable for production, consequently, it is necessary to design a finish boring anchor clamps of being applied to turbine bearing seat on the lathe specially.
Disclosure of Invention
In view of the above, the invention aims to provide a fixture for precisely boring a turbine bearing seat on a lathe, which better meets the requirement of the fixture for precisely boring the turbine bearing seat on the lathe of a thin-wall revolving body, has the advantages of novel structure, convenience in assembly and disassembly and firmness in clamping, ensures the stability of processing precision, and also meets the requirement of mass production rate.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a fine boring fixture of a turbine bearing seat on a lathe comprises a liquid plastic thin-wall sleeve, a mandrel, a locking screw, a die taper shank, a plunger, a pressurizing screw and a blocking screw, wherein the mandrel comprises a connecting disc and a connecting cylinder which are integrally formed, the connecting disc and the connecting cylinder are coaxially arranged, the liquid plastic thin-wall sleeve is in interference fit with the connecting cylinder of the mandrel and locked by the locking screws, the die taper shank is connected with the connecting disc of the mandrel through a plurality of hexagon socket head cap screws, a channel for liquid plastic to store and flow is arranged in the mandrel, a first through hole communicated with the channel is arranged in the radial direction of the connecting disc, a second through hole communicated with the channel is arranged on the end face of the connecting disc, a plurality of third through holes communicated with the channel are arranged in the radial direction of the connecting cylinder, the plunger is matched at the first through hole, the top end of the plunger is connected with a pressurizing screw, the pressurizing screw is in threaded connection with a first through hole of the channel, a blocking screw is arranged at a second through hole, a plurality of third through holes are communicated with the interior of the liquid plastic film sleeve, the outer surface of the liquid plastic film sleeve is matched with a large aperture of the turbine bearing seat, and the Morse taper shank is matched and connected with a lathe spindle taper hole.
Furthermore, the mo type taper shank comprises a taper shank and a connecting seat, a cylindrical boss is arranged on the connecting seat, a limiting hole is formed in the end face of the connecting disc of the mandrel, and the cylindrical boss is matched with the limiting hole.
Furthermore, a second through hole is formed in the center of the connecting disc, a plurality of third through holes are formed in the same circumference, an annular shallow groove is formed in the position, where the third through hole is formed, of the connecting cylinder, and an annular deep groove is formed in the corresponding position of the inner wall of the liquid plastic film sleeve.
Furthermore, the plunger from top to bottom includes a middle diameter section, a small diameter section and a large diameter section, an external thread is arranged on the middle diameter section, a hollow structure is arranged inside the lower portion of the pressurizing screw, the hollow structure comprises an internal thread section matched with the external thread on the middle diameter section of the plunger and a supporting groove for accommodating the middle diameter section of the plunger, the plunger is rotated to enable the middle diameter section of the plunger to enter the supporting groove, and the small diameter section enters the external thread section of the hollow structure to achieve connection between the plunger and the pressurizing screw.
Further, the large-aperture end of the turbine bearing seat is matched with the annular deep groove of the liquid plastic film sleeve.
Furthermore, the end part of the liquid plastic film sleeve is provided with a limit step matched with the step inside the turbine bearing seat.
Further, the morse taper shank is connected with a connecting disc of the mandrel 3 through four inner hexagon screws.
Compared with the prior art, the fine boring fixture for the turbine bearing seat on the lathe has the following advantages:
this application has solved the fine boring anchor clamps demand on the lathe of this kind of turbine bearing seat, novel structure, and loading and unloading are convenient, and it is firm to press from both sides tightly, has guaranteed the stability of machining precision, has also satisfied productivity ratio's needs.
The clamp uses liquid plastic as a force transmission medium, and uniformly transmits pressure to the liquid plastic film sleeve to clamp a workpiece, so that the stress is uniform.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic perspective view of a turbine bearing seat to be machined;
FIG. 2 is a cross-sectional view of a turbine bearing housing to be machined;
fig. 3 is a cut-away perspective view of a fine boring fixture for a turbine bearing housing on a lathe according to an embodiment of the present invention;
fig. 4 is an exploded perspective view of a precision boring jig for a turbine bearing housing on a lathe according to an embodiment of the present invention;
FIG. 5 is a right side view of a fine boring fixture for a turbine bearing housing on a lathe according to an embodiment of the present invention;
FIG. 6 is a view from the B-B direction of FIG. 5;
fig. 7 is a view from direction C-C of fig. 5.
Description of reference numerals:
1-turbine bearing seat, 2-liquid plastic thin-wall sleeve, 3-mandrel, 301-connecting disc, 302-connecting cylinder, 4-compression screw, 5-plunger, 6-blocking screw, 7-locking screw, 8-Momo type taper shank, 801-taper shank, 802-connecting seat, 9-inner hexagon screw, 10-channel, 11-first through hole, 12-third through hole, 13-cylindrical boss, 14-annular shallow groove, 15-annular deep groove and 16-limiting step.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1-2, which are schematic structural diagrams of a turbine bearing seat to be machined, a workpiece is made of 1Cr13, and the fixture is used for finely boring a small hole section of the turbine bearing seat.
As shown in fig. 3-7, a fine boring fixture for a turbine bearing seat on a lathe comprises a liquid plastic thin-wall sleeve 2, a mandrel 2, locking screws 7, a mo-type taper shank 8, a plunger 5, a pressurizing screw 4 and a blocking screw 6, wherein the mandrel 3 comprises a connecting disc 301 and a connecting cylinder 302 which are integrally formed, the connecting disc 301 and the connecting cylinder 302 are coaxially arranged, the liquid plastic thin-wall sleeve 2 is in interference fit with the connecting cylinder 302 of the mandrel 3 and is locked by the locking screws 7, the mo-type taper shank 8 is connected with the connecting disc 301 of the mandrel 3 through a plurality of hexagon socket head cap screws 9, a channel 10 for storing and flowing liquid plastic is arranged in the mandrel 2, a first through hole 11 communicated with the channel is arranged in the radial direction of the connecting disc 301, a second through hole communicated with the channel 10 is arranged on the end face of the connecting disc 301, the radial direction of the connecting cylinder 302 is provided with a plurality of third through holes 12 communicated with the channel 10, the first through hole 11 is matched with the plunger 5, the top end of the plunger 5 is connected with the pressurizing screw 4, the pressurizing screw 4 is in threaded connection with the first through hole 11 of the channel, the second through hole is provided with the plugging screw 6, the plurality of third through holes 12 are communicated with the inside of the liquid plastic film sleeve 2, the outer surface of the liquid plastic film sleeve 2 is matched with the large aperture of the turbine bearing seat 1, and the Morse taper shank 8 is matched and connected with the taper hole of the lathe spindle and tensioned by a pull rod.
The Mohs taper shank 8 comprises a taper shank 801 and a connecting seat 802, a cylindrical boss 13 is arranged on the connecting seat 802, a limiting hole is formed in the end face of the connecting disc 301 of the mandrel 3, and the cylindrical boss 13 is matched with the limiting hole.
The second through hole is arranged at the center of the connecting disc 301, a plurality of third through holes 12 are arranged on the same circumference, an annular shallow groove 14 is arranged at the position of the connecting cylinder 302 where the third through hole 12 is arranged, and an annular deep groove 15 is arranged at the corresponding position of the inner wall of the liquid plastic film sleeve 2.
The large-aperture end part of the turbine bearing seat 1 is matched with the annular deep groove 15 of the liquid plastic film sleeve 2, and the liquid plastic film sleeve 2 is arranged to well clamp the turbine bearing seat 1.
The end of the liquid plastic film sleeve 2 is provided with a limit step 16 which is matched with the step in the turbine bearing seat 1, and the limit step is determined to be matched well.
The Morse taper shank 8 is connected with the connecting disc 301 of the mandrel 3 through four inner hexagon screws 9, and the connection and the fastening are realized, and the stress is uniform.
The positioning scheme of the application is that as shown in fig. 2, an N cylindrical surface (finished to a phi 72 hole required by a drawing) limits four degrees of freedom, and a W surface (end plane, finished) limits one degree of freedom and is not completely positioned. In order to ensure the positioning precision, an internal expansion clamping mode is adopted.
The working principle of the clamp is as follows: the liquid plastic thin-wall sleeve 2 is in interference fit with a connecting cylinder 302 of a mandrel 3, then the connecting cylinder is locked by a locking screw 7, a plugging screw 6 is installed at a second through hole, a connecting disc 301 of the mandrel 3 is connected with a connecting seat 801 of a Morse taper shank 8 through four hexagon screws 9, the Morse taper shank 8 is in fit connection with a lathe spindle taper hole, the plugging screw is tensioned by a pull rod, liquid plastic is added into a channel of the mandrel 3, a plunger 5 and a pressurizing screw 4 are added at a first through hole 11, a large hole of a turbine bearing seat 1 is matched with an outer cylindrical surface of the liquid plastic thin-wall sleeve 2, the end surfaces of the two are in contact positioning through a limiting step 16, the pressurizing screw 4 with an inner hexagon is rotated to push the plunger 5 to pressurize, and the liquid plastic does not deform, so that the liquid plastic thin-wall sleeve 2 deforms and tightly.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides a turbine bearing seat is at fine boring anchor clamps on lathe which characterized in that: the liquid plastic thin-wall sleeve comprises a liquid plastic thin-wall sleeve (2), a mandrel (2), locking screws (7), a Mooney taper shank (8), a plunger (5), a pressurizing screw (4) and a plugging screw (6), wherein the mandrel (3) comprises a connecting disc (301) and a connecting cylinder (302) which are integrally formed, the connecting disc (301) and the connecting cylinder (302) are coaxially arranged, the liquid plastic thin-wall sleeve (2) is in interference fit with the connecting cylinder (302) of the mandrel (3) and is locked by a plurality of locking screws (7), the Mooney taper shank (8) is connected with the connecting disc (301) of the mandrel (3) through a plurality of inner hexagonal screws (9), a channel (10) for storing and flowing liquid plastic is arranged in the mandrel (2), a first through hole (11) communicated with the channel is arranged in the radial direction of the connecting disc (301), a second through hole communicated with the channel (10) is arranged on the end face of the connecting disc (301), a plurality of third through holes (12) communicated with a channel (10) are formed in the radial direction of a connecting cylinder (302), a plunger (5) is matched at the position of a first through hole (11), the top end of the plunger (5) is connected with a pressurizing screw (4), the pressurizing screw (4) is in threaded connection with the first through hole (11) of the channel, a blocking screw (6) is arranged at the position of a second through hole, the third through holes (12) are communicated with the inside of a liquid plastic film sleeve (2), the outer surface of the liquid plastic film sleeve (2) is matched with the large aperture of a turbine bearing seat (1), and a Morse taper shank (8) is matched and connected with a lathe spindle taper hole.
2. The jig for finely boring a turbine bearing housing on a lathe according to claim 1, wherein: the die type taper shank (8) comprises a taper shank (801) and a connecting seat (802), a cylindrical boss (13) is arranged on the connecting seat (802), a limiting hole is formed in the end face of a connecting disc (301) of the mandrel (3), and the cylindrical boss (13) is matched with the limiting hole.
3. The jig for finely boring a turbine bearing housing on a lathe according to claim 1, wherein: the second through hole is arranged at the center of the connecting disc (301), a plurality of third through holes (12) are arranged on the same circumference, the third through holes (12) of the connecting cylinder (302) are provided with annular shallow grooves (14), and the corresponding positions of the inner wall of the liquid plastic film sleeve (2) are provided with annular deep grooves (15).
4. The jig for finely boring a turbine bearing housing on a lathe according to claim 1, wherein: plunger (5) from the top down includes pitch diameter section, path section and major diameter section, be equipped with the external screw thread on the pitch diameter section, forcing screw (4) lower part inside is hollow structure, hollow structure include with the pitch diameter section of plunger on external screw thread complex internal thread section with hold the support recess of the pitch diameter section of plunger, rotatory plunger makes the pitch diameter section of plunger get into in the support recess, path section gets into hollow structure's external screw thread section in realize being connected of plunger (5) and forcing screw (4).
5. The jig for finely boring a turbine bearing housing on a lathe according to claim 3, wherein: the large-aperture end part of the turbine bearing seat (1) is matched with the annular deep groove (15) of the liquid plastic film sleeve (2).
6. The jig for finely boring a turbine bearing housing on a lathe according to claim 1, wherein: the end part of the liquid plastic film sleeve (2) is provided with a limit step (16) matched with the step inside the turbine bearing seat (1).
7. The jig for finely boring a turbine bearing housing on a lathe according to any one of claims 1 to 6, wherein: the Morse taper shank (8) is connected with a connecting disc (301) of the mandrel (3) through four inner hexagon screws (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011187378.9A CN112338602A (en) | 2020-10-29 | 2020-10-29 | Fine boring fixture for turbine bearing seat on lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011187378.9A CN112338602A (en) | 2020-10-29 | 2020-10-29 | Fine boring fixture for turbine bearing seat on lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112338602A true CN112338602A (en) | 2021-02-09 |
Family
ID=74357090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011187378.9A Withdrawn CN112338602A (en) | 2020-10-29 | 2020-10-29 | Fine boring fixture for turbine bearing seat on lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112338602A (en) |
-
2020
- 2020-10-29 CN CN202011187378.9A patent/CN112338602A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210209 |