CN203018769U - Liquidity plastic swell-tightening device used for precise part machining - Google Patents
Liquidity plastic swell-tightening device used for precise part machining Download PDFInfo
- Publication number
- CN203018769U CN203018769U CN 201220703791 CN201220703791U CN203018769U CN 203018769 U CN203018769 U CN 203018769U CN 201220703791 CN201220703791 CN 201220703791 CN 201220703791 U CN201220703791 U CN 201220703791U CN 203018769 U CN203018769 U CN 203018769U
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- hole
- mandrel
- cylinder body
- pressure transmission
- thin walled
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Abstract
The utility model relates to a liquidity plastic swell-tightening device used for precise part machining. The liquidity plastic swell-tightening device used for precise part machining is simple in structure and manufacture cost is reduced. The liquidity plastic swell-tightening device used for precise part machining comprises a base. A central spindle is arranged on the base. A pressurization cavity is arranged in the interior, in a vertical direction, of the central spindle. A pressurization bolt is arranged at the upper end of the pressurization cavity. The lower end of the pressurization bolt is connected with a plunger. A pressure transmitting cavity is arranged in the interior, in a horizontal direction, of the central spindle. A plug screw is arranged at one end, close to the base, of the pressure transmitting cavity. The other end of the pressure transmitting cavity is communicated with an air-bleed hole in the central spindle. An air-bleed screw is arranged in the air-bleed hole. A pressure transmitting hole is formed in a side wall at one end, close to the air-bleed hole, of the pressure transmitting cavity. A thin-wall sleeve is arranged on the outer side of the pressure transmitting hole. A positioning block is arranged on one side, close to the base, of the thin-wall sleeve. The pressure transmitting cavity is communicated with an inner cavity of the thin-wall sleeve through the pressure transmitting hole. Liquid plastic is arranged in a cavity body inside the central spindle and a cavity body inside the thin-wall sleeve.
Description
Technical field
The utility model relates to a kind of precision part processing liquid plastics swelling device.
Background technology
The small and exquisite wall of aero-engine precision part is thin, and working surface is endoporus or cylindrical, the dimensional accuracy of having relatively high expectations and axiality, and other finished surfaces have specification requirement to it.Because aero-engine precision part wall is thin, it is weak hard parts, relative rigidity is lower, intensity a little less than, processing technology is poor, and is particularly in the situation that higher to part shape, dimension precision requirement, all very responsive to vibration, cutting force and cutting temperature etc., process also yielding and generation vibration, wayward machining accuracy and raising working (machining) efficiency.During particularly near final processing dimension, processing is got up more difficult.Therefore, the machining that realizes high accuracy, high efficiency and the high reliability of precision part is the important topic that aviation faces always.
Precision part occupies great ratio in aero-engine is produced, adopt rigid central spindle or expander to locate with the hole in the past, clamps both ends of the surface or tensioner hole grinding cylindrical, and axiality is relatively poor, and percent defective is more than 60%～70%.If with the method processing of part grouping, because of mandrel and hole in piece part gap very little (0.01～0.02 millimeter), very inconvenient during the loading and unloading axle sleeve, labor strength is large, efficient is low, locating hole easily is damaged.And with expander also because of the accumulated error of the parts such as its mandrel, ringfeder greater than 0.04 millimeter, and do not reach the part processing request.Therefore designed the liquid plastics swelling device, to satisfy the part processing request.
The utility model content
For the problem that prior art exists, the utility model provides a kind of precision part processing to use the liquid plastics swelling device, and this swelling device is simple in structure, has reduced manufacturing cost, has shortened the production cycle, and the centering degree of accuracy is high.
To achieve these goals, the utility model adopts following technical scheme: a kind of precision part processing liquid plastics swelling device, comprise base, be provided with mandrel on base, inside on the mandrel vertical direction is provided with pressurizing chamber, and the upper end of pressurizing chamber has internal thread, is provided with pressurization bolt in the upper end of pressurizing chamber, internal thread on described pressurizing chamber is corresponding with the external screw thread of pressurization bolt, and the pressurization bolt lower end plunger interior with being arranged on pressurizing chamber is connected; Inside on the mandrel horizontal direction is provided with the pressure transmission chamber, and described pressurizing chamber is connected with the pressure transmission chamber; An end in described pressure transmission chamber near base is provided with plug screw, and the other end in pressure transmission chamber is connected with the air vent on being arranged on mandrel, is provided with bleed screw in air vent, is provided with pressure transmission hole on the close distolateral wall of air vent in described pressure transmission chamber; Be provided with the thin walled cylinder body with through hole on the mandrel in the pressure transmission hole outside, described thin walled cylinder body is arranged on the mandrel outside by through hole; Described thin walled cylinder body middle part has inner chamber, and the diameter of inner chamber is greater than the diameter of through hole; A side at the close base of thin walled cylinder body is provided with the locating piece with second through hole, and described locating piece is arranged on mandrel by the second through hole; Described pressure transmission chamber is connected by pressure transmission hole with the inner chamber of thin walled cylinder body; Be provided with liquid plastics in the internal cavity of described mandrel and thin walled cylinder body.
Be provided with groove in described pressurization bolt lower end, the groove lower end has internal thread, and the upper end of described plunger has external screw thread, and the external screw thread of plunger upper end matches with the internal thread of groove lower end.
Described plunger head is hemispherical.
Described thin walled cylinder body adopts steel alloy.
The beneficial effects of the utility model:
The utlity model has simple in structure, easily manufactured, cost is low, centering precision is high, reliable clamping, thin-walled parts clamp the advantages such as indeformable, can guarantee the requirement on machining accuracy of precision part.After the thin-wall case of aero-engine used the utility model to position processing, the passing rate of processing of part reached 100%, and working (machining) efficiency improves 2 times, extends to military and civilian good production, has a extensive future.Specific features is as follows:
1. the centering degree of accuracy is high.No matter thin-wall case is take cylindrical as benchmark or take endoporus as benchmark, no matter also thin-wall case reference surface diameter size how, can make thin-wall case obtain the very high centering degree of accuracy, the plunger thrust can be evenly distributed in along (can reach whole thin walled cylinder body length 80%) on most of face of cylinder of thin walled cylinder body length;
2. shorten the production cycle and reduce manufacturing cost.The utility model is to utilize the homogeneous deformation of thin walled cylinder body to locate and clamp, so the mounting or dismounting of housing are very rapid, can shorten non-cutting time significantly, thereby raises labour productivity and the utilization rate of equipment;
3. liquid plastics itself is without corrosiveness, therefore permanent nonvolatile energy.
Description of drawings
Fig. 1 is the structural representation that the liquid plastics swelling device is used in precision part processing of the present utility model;
Fig. 2 is the structural representation of mandrel;
Fig. 3 is the side view of Fig. 2;
Fig. 4 is the structural representation of plunger;
Fig. 5 is the structural representation of pressurization bolt;
Fig. 6 is pressurization bolt and structural representation after plunger is connected;
Fig. 7 is the structural representation of thin walled cylinder body;
Fig. 8 is the side view of Fig. 1;
Fig. 9 is the structural representation that the use state of liquid plastics swelling device is used in precision part processing of the present utility model;
In figure, 1--base, 2--mandrel, 3--pressurizing chamber, 4--pressure transmission chamber, 5--pressurization bolt, 6--plunger, the 7--locating piece, 8--thin walled cylinder body, 9--pressure transmission hole, the 10--inner chamber, 11--plug screw, 12--air vent, the 13--bleed screw, 14--liquid plastics, 15--housing, the 16--groove, 17-through hole, the 18-the second through hole.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As Fig. 1～shown in Figure 8, a kind of precision part processing liquid plastics swelling device, comprise base 1, be provided with mandrel 2 on base 1, inside on mandrel 2 vertical directions is provided with pressurizing chamber 3, and the upper end of pressurizing chamber 3 has internal thread, is provided with pressurization bolt 5 in the upper end of pressurizing chamber 3, internal thread on described pressurizing chamber 3 is corresponding with the external screw thread of pressurization bolt 5, and the pressurization bolt 5 lower ends plunger 6 interior with being arranged on pressurizing chamber 3 is connected; Inside on mandrel 2 horizontal directions is provided with pressure transmission chamber 4, and described pressurizing chamber 3 is connected with pressure transmission chamber 4; 4 ends near bases 1 are provided with plug screw 11 in described pressure transmission chamber, the other end in pressure transmission chamber 4 is connected with air vent 12 on being arranged on mandrel 2, be provided with bleed screw 13 in air vent 12, be provided with vertical pressure transmission hole 9 in described pressure transmission chamber 4 near on distolateral walls of air vent 12; Be provided with the thin walled cylinder body 8 with through hole 17 on the mandrel 2 in pressure transmission hole 9 outsides, described thin walled cylinder body 8 is arranged on mandrel 2 outsides by through hole 17; Described thin walled cylinder body 8 middle parts have inner chamber 10, and the diameter of inner chamber 10 is greater than the diameter of through hole 17; A side at thin walled cylinder body 8 close bases 1 is provided with the locating piece 7 with second through hole 18, and described locating piece 7 is arranged on mandrel 2 by the second through hole 18; Described pressure transmission chamber 4 is connected by pressure transmission hole 9 with the inner chamber 10 of thin walled cylinder body 8; Be provided with liquid plastics 14 in the internal cavity of described mandrel 2 and thin walled cylinder body 8.
Be connected by screw, bearing pin between described mandrel 2 and base 1, locating piece 7 and mandrel 2.
Be provided with groove 16 in described pressurization bolt 5 lower ends, groove 16 lower ends have internal thread, described plunger 6 upper ends have external screw thread, and the external screw thread of plunger 6 upper ends matches with the internal thread of groove 16 lower ends, and the head of described plunger 6 is arranged in the groove 16 of pressurization bolt 5.
In order to reduce the frictional force of plunger 6 and groove 16 inside, described plunger 6 heads are hemispherical.
Described plunger 6 adopts polytetrafluoro vinyl chloride.
Be connected by straight pin between described thin walled cylinder body 8 and mandrel 2.
Described straight pin quantity is 3, and is evenly distributed on circumference.
The length of the inner chamber 10 of described thin walled cylinder body 8 can reach 80% of whole thin walled cylinder body 8 length.
Be provided with pad between described bleed screw 13 and mandrel 2.
Described thin walled cylinder body 8 adopts steel alloy, i.e. 40Cr or 30CrMnSiA.
Below in conjunction with description of drawings use procedure of the present utility model.
As shown in Figure 9, first be fixed on the utility model on the scroll chuck of lathe by base 1, housing 15 with part to be processed is enclosed within on thin walled cylinder body 8 of the present utility model again, be full of under the state of liquid plastics 14 in the internal cavity of mandrel 2 and thin walled cylinder body 8, screw in pressurization bolt 5, driving simultaneously plunger 6 moves down, because plunger 6 adopts polytetrafluoro vinyl chloride, this material has elasticity and good wear-resisting and self-lubricating property, when plunger 6 moves down, can play self-sealing effect.When moving down, plunger 6 exerts pressure to fluidity plastics 14, because the internal cavity of mandrel 2 of the present utility model and thin walled cylinder body 8 is in air-tight state, liquid plastics 14 is again translucent frozen glue material, have certain elasticity and mechanical strength, and be incompressible, liquid plastics 14 is non-leakage under pressure, transmission of pressure is effective, pressure is transmitted to inner chamber 10 sidewalls of thin walled cylinder body 8 equably by liquid plastics 14, make inner chamber 10 sidewalls produce strain, expands outwardly.Pressurization bolt 5 screws in more, and the inner chamber 10 sidewall radial-deformations of thin walled cylinder body 8 are also larger, and inner chamber 10 sidewalls of thin walled cylinder body 8 and the gap between housing 15 also reduce gradually, finally form the cylinder contact-making surface, makes housing 15 realize accurately centering.
Before using the utility model, the inside of the groove 16 with the head of plunger 6 by being threaded into pressurization bolt 5 lower ends can in the internal freedom rotation of groove 16, be connected the head of plunger 6 simultaneously with pressurization bolt 5.When screwing in or screw out pressurization bolt 5, drive simultaneously plunger 6 and move downward or upward.
Described thin walled cylinder body 8 employing good springiness, 40Cr or 30CrMnSiA that yield point is high are to obtain larger deflection.Thin walled cylinder body 8 is through quenching heat treatment, and hardness HRC value is 40 to 45, and inner chamber 10 sidewall thickness of thin walled cylinder body 8 are very even.
When the internal cavity of mandrel 2 of the present utility model and thin walled cylinder body 8 is mixed with air, can screw out bleed screw 13, then screw in pressurization bolt 5 air in the chamber is discharged by air vent 12, screw at last bleed screw 13, make inner chamber be in air-tight state.
Claims (4)
1. a precision part is processed and is used the liquid plastics swelling device, it is characterized in that comprising base, be provided with mandrel on base, inside on the mandrel vertical direction is provided with pressurizing chamber, the upper end of pressurizing chamber has internal thread, upper end at pressurizing chamber is provided with pressurization bolt, and the internal thread on described pressurizing chamber is corresponding with the external screw thread of pressurization bolt, and the pressurization bolt lower end plunger interior with being arranged on pressurizing chamber is connected; Inside on the mandrel horizontal direction is provided with the pressure transmission chamber, and described pressurizing chamber is connected with the pressure transmission chamber; An end in described pressure transmission chamber near base is provided with plug screw, and the other end in pressure transmission chamber is connected with the air vent on being arranged on mandrel, is provided with bleed screw in air vent, is provided with pressure transmission hole on the close distolateral wall of air vent in described pressure transmission chamber; Be provided with the thin walled cylinder body with through hole on the mandrel in the pressure transmission hole outside, described thin walled cylinder body is arranged on the mandrel outside by through hole; Described thin walled cylinder body middle part has inner chamber, and the diameter of inner chamber is greater than the diameter of through hole; A side at the close base of thin walled cylinder body is provided with the locating piece with second through hole, and described locating piece is arranged on mandrel by the second through hole; Described pressure transmission chamber is connected by pressure transmission hole with the inner chamber of thin walled cylinder body; Be provided with liquid plastics in the internal cavity of described mandrel and thin walled cylinder body.
2. precision part according to claim 1 is processed and is used the liquid plastics swelling device, it is characterized in that being provided with groove in described pressurization bolt lower end, the groove lower end has internal thread, and the upper end of described plunger has external screw thread, and the external screw thread of plunger upper end matches with the internal thread of groove lower end.
3. the liquid plastics swelling device is used in precision part processing according to claim 1, it is characterized in that described plunger head is hemispherical.
4. the liquid plastics swelling device is used in precision part processing according to claim 1, it is characterized in that described thin walled cylinder body adopts steel alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220703791 CN203018769U (en) | 2012-12-19 | 2012-12-19 | Liquidity plastic swell-tightening device used for precise part machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220703791 CN203018769U (en) | 2012-12-19 | 2012-12-19 | Liquidity plastic swell-tightening device used for precise part machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203018769U true CN203018769U (en) | 2013-06-26 |
Family
ID=48642783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220703791 Expired - Fee Related CN203018769U (en) | 2012-12-19 | 2012-12-19 | Liquidity plastic swell-tightening device used for precise part machining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203018769U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001957A (en) * | 2014-05-29 | 2014-08-27 | 苏州锟恩电子科技有限公司 | Liquid medium elastic centering clamping device |
| CN104014831A (en) * | 2014-05-23 | 2014-09-03 | 南京农业大学 | Method and clamp for clamping thin-walled cylinder-shaped workpieces |
| CN107891250A (en) * | 2017-10-27 | 2018-04-10 | 重庆跃进机械厂有限公司 | The machining manufacture of precision positioning mandrel |
| CN112658708A (en) * | 2020-11-20 | 2021-04-16 | 惠阳航空螺旋桨有限责任公司 | Clamping and positioning fixture for excircle of shaft sleeve part |
-
2012
- 2012-12-19 CN CN 201220703791 patent/CN203018769U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014831A (en) * | 2014-05-23 | 2014-09-03 | 南京农业大学 | Method and clamp for clamping thin-walled cylinder-shaped workpieces |
| CN104001957A (en) * | 2014-05-29 | 2014-08-27 | 苏州锟恩电子科技有限公司 | Liquid medium elastic centering clamping device |
| CN107891250A (en) * | 2017-10-27 | 2018-04-10 | 重庆跃进机械厂有限公司 | The machining manufacture of precision positioning mandrel |
| CN107891250B (en) * | 2017-10-27 | 2019-04-19 | 重庆跃进机械厂有限公司 | The machining manufacture of precision positioning mandrel |
| CN112658708A (en) * | 2020-11-20 | 2021-04-16 | 惠阳航空螺旋桨有限责任公司 | Clamping and positioning fixture for excircle of shaft sleeve part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20171219 |