CN203917964U - For processing the top of impactor outer shell - Google Patents
For processing the top of impactor outer shell Download PDFInfo
- Publication number
- CN203917964U CN203917964U CN201420322090.1U CN201420322090U CN203917964U CN 203917964 U CN203917964 U CN 203917964U CN 201420322090 U CN201420322090 U CN 201420322090U CN 203917964 U CN203917964 U CN 203917964U
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- hole
- supporting seat
- fixed connection
- connection shaft
- thrust bearing
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Abstract
For processing the top of impactor outer shell, comprise fixed connection shaft and supporting seat, supporting seat is made up of cylindrical section and conical section, the larger end of conical section is connected with cylindrical section front end, described supporting seat rear end face center by backward front axle to offering level Four shoulder hole, level Four shoulder hole is blind hole, the two-stage multidiameter part of fixed connection shaft is respectively equipped with single-row centripetal thrust bearing and single direction thrust ball bearing, single-row centripetal thrust bearing is assemblied in the second hole of supporting seat, single direction thrust ball bearing is assemblied in the 3rd hole of supporting seat, supporting seat is provided with screw thread at the first hole inwall, the first hole internal thread of supporting seat is connected with the gland with the top interference fit of single-row centripetal thrust bearing rear end.The utility model is reasonable in design, simple in structure, has solved in process and has needed repeatedly to dismantle, and the problem of waste of manpower, has good versatility, long service life, and greatly enhance productivity, ensure the uniformity of product quality.
Description
Technical field
The utility model belongs to machining manufacturing technology field, relates in particular to a kind of for processing the top of impactor outer shell.
Background technology
Down-hole hammer impactor can be used for exploration, earth and rock works, mining boring and oil drilling field, has brought into play huge effect.The outer cylinder structure of down-hole hammer impactor is elongated thin-walled parts (wall thickness 10mm, length 1000mm).Processing technology, for first carrying out roughing on lathe, is carried out fine finishining by grinding machine again after Overheating Treatment.No matter be roughing or fine finishining process, clamping all needs the top auxiliary clamping that carries out behind location.
Top is machine tool component in machining, has two kinds of stationary center and rolling centers.Stationary center can and not allow the part of centering to support to the part of end face complexity.Toply mainly formed by thimble, clamping device, housing, steady pin, bearing and mandrel.Top one end can top centre bore or the endoporus of materials in the tube, and the other end can top end face be spherical or the part of taper, is toply fixed by clamping device.In the time that part does not allow or cannot centering, available clamping device is directly clamped turning.Housing and mandrel are drilled with pin-and-hole, enter or remove with the pin of steady pin, realize top life or death dual-purpose.Top boring, cover tooth and the fraising that also can be used for workpiece.
The feature of rolling center:
1, external diameter is little, interference cutter is less, is suitable for high rotating speed, the cutting of moderate;
2, regularly oiling increases the service life;
3, have certain water-proof function, globality is easily dispelled the heat;
4, adopt the long needle bearing of gradient, supported at three point arrangement architecture rigidity is strengthened, good stability.
Stationary center has the shapes such as tapered and head one side of something, the feature of stationary center:
1, the preposition standard type tungsten carbide top heart;
2, heartwood matter in tungsten carbide top is SK2, and hardness reaches 75HRC ± 2;
3, the top heart and body all need precise finiss to reach requirement.
At present, on lathe, use traditional standard top because the problems such as head sizes is little, specification is few cannot meet the requirement of processing impactor outer shell, therefore, a lot of impactor outer shell manufacturer's employings two ends all clamp the mode of outer ring, so just can not ensure the concentricity of inner circle and cylindrical, and clamping operation is loaded down with trivial details, has a strong impact on production efficiency.Therefore,, in order to improve clamping precision and guarantee product quality, to enhance productivity, need badly improving for processing the top of impactor outer shell.
Utility model content
The utility model, in order to solve weak point of the prior art, provides a kind of and can on lathe and grinding machine, use, enhance productivity, ensure that product quality is conforming for processing the top of impactor outer shell simultaneously.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: for processing the top of impactor outer shell, comprise fixed connection shaft and supporting seat, supporting seat is made up of cylindrical section and conical section, the larger end of conical section is connected with cylindrical section front end, described supporting seat rear end face center by backward front axle to offering level Four shoulder hole, level Four shoulder hole is blind hole, the first hole that level Four shoulder hole is reduced successively by external diameter, the second hole, the 3rd hole and the 4th hole composition, fixed connection shaft front end edge axially extend in level Four shoulder hole, the part of fixed connection shaft in level Four shoulder hole is two-stage multidiameter structure, the two-stage multidiameter part of fixed connection shaft is respectively equipped with single-row centripetal thrust bearing and single direction thrust ball bearing, single-row centripetal thrust bearing is assemblied in the second hole of supporting seat, single direction thrust ball bearing is assemblied in the 3rd hole of supporting seat, the width of single-row centripetal thrust bearing and single direction thrust ball bearing is less than respectively the axial length in the second hole and the 3rd hole, supporting seat is provided with screw thread at the first hole inwall, the first hole internal thread of supporting seat is connected with the gland with the top interference fit of single-row centripetal thrust bearing rear end, fixed connection shaft is provided with the baffle ring for locating single-row centripetal thrust bearing and coordinating with gland inner ring, single-row centripetal thrust bearing front end is provided with the circlip being enclosed within on fixed connection shaft,
The interference fit stress of single-row centripetal thrust bearing inner ring and fixed connection shaft is greater than the interference fit stress of the second hole inwall of single-row centripetal thrust bearing outer ring and supporting seat, and the interference fit stress of single direction thrust ball bearing inner ring and fixed connection shaft is greater than the interference fit stress of the 3rd hole inwall of single direction thrust ball bearing outer ring and supporting seat;
The conical section of described supporting seat in axial direction offer compared with small end center the screwed hole being communicated with the 4th hole, screwed hole internal thread is connected with adjustment screw, adjustment screw rear end extend in the 4th hole and with the top interference fit of fixed connection shaft front end;
Fixed connection shaft is pre-large post-small conical structure in one end, rear portion of baffle ring, and this conical tapering is Morse's taper.
The cylindrical section of described supporting seat is radially provided with the oil filler point being communicated with the second hole, the oil filler point external port place plug cock that has been threaded.
Adopt technique scheme, the utility model is in the time that work is used, the rear portion of fixed connection shaft plugs in the hole of tailstock tool, the front end of impactor outer shell directly or be clamped in by fixture on the chuck of machine tool chief axis, the rear end of impactor outer shell is held out against by conical supporting seat, in the time carrying out turning or grinding operation, machine tool chief axis drives impactor outer shell and supporting seat High Rotation Speed by chuck.Because fixed connection shaft of the present utility model is by single-row centripetal thrust bearing and single direction thrust ball bearing, so just make supporting seat can bear larger axial force in the time of High Rotation Speed.
In the first hole of supporting seat, be screwed hole, gland is threaded in screwed hole, like this can turn gland regulates the end play of single row angular contact ball bearing.In addition, make adjustment screw hold out against fixed connection shaft by screwing adjustment screw, can regulate like this end play and the bearing pre-fastening of single-row centripetal thrust bearing and single direction thrust ball bearing, can ensure that so single-row radial thrust bearing and single direction thrust ball bearing keep good working order, thereby extend bearing service life, increase work efficiency.
The tapering at fixed connection shaft rear portion adopts Morse's taper, and Morse's taper is the international standard of a tapering, for stationary fit accurately to locate.Because tapering is very little, utilize the principle of frictional force, can transmit certain moment of torsion, again because be taper fit, so can dismantle easily.In the certain limit of same tapering, workpiece is free to dismounting, can not have influence on again result of use in the time of work simultaneously, such as the taper shank drill of boring, if need to dismantle drill bit grinding in using, again loads onto the center that can not affect drill bit after dismounting.Thereby realize the versatility of lathe and grinding machine.
After in the time that the utility model uses one section, open plug cock, lubricating oil is injected in the second hole by oil filler point, so just can dismantles gland and realize single-row centripetal thrust bearing and single direction thrust ball bearing are lubricated, thereby extend service life of bearing.
In sum, the utility model is reasonable in design, simple in structure, has solved in process and has needed repeatedly to dismantle, the problem of waste of manpower, clamping precision is high, has good versatility, long service life, and greatly enhance productivity, the uniformity of product quality ensured.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, of the present utility model for processing the top of impactor outer shell, comprise fixed connection shaft 1 and supporting seat 2, supporting seat 2 is made up of cylindrical section and conical section, the larger end of conical section is connected with cylindrical section front end, supporting seat 2 rear end face centers by backward front axle to offering level Four shoulder hole, level Four shoulder hole is blind hole, the first hole 3 that level Four shoulder hole is reduced successively by external diameter, the second hole 4, the 3rd hole 5 and the 4th hole 6 form, fixed connection shaft 1 front end edge axially extend in level Four shoulder hole, the part of fixed connection shaft 1 in level Four shoulder hole is two-stage multidiameter structure, the two-stage multidiameter part of fixed connection shaft 1 is respectively equipped with single-row centripetal thrust bearing 7 and single direction thrust ball bearing 8, single-row centripetal thrust bearing 7 is assemblied in the second hole 4 of supporting seat 2, single direction thrust ball bearing 8 is assemblied in the 3rd hole 5 of supporting seat 2, the width of single-row centripetal thrust bearing 7 and single direction thrust ball bearing 8 is less than respectively the axial length in the second hole 4 and the 3rd hole 5, supporting seat 2 is provided with screw thread at the first hole 3 inwalls, the first hole 3 internal threads of supporting seat 2 are connected with the gland 9 with 7 top, the rear end interference fits of single-row centripetal thrust bearing, fixed connection shaft 1 is provided with the baffle ring 10 for locating single-row centripetal thrust bearing 7 and coordinating with gland 9 inner rings, single-row centripetal thrust bearing 7 front ends are provided with the circlip 14 being enclosed within on fixed connection shaft 1.
The interference fit stress of single-row centripetal thrust bearing 7 inner rings and fixed connection shaft 1 is greater than the interference fit stress of the second hole 4 inwalls of single-row centripetal thrust bearing 7 outer rings and supporting seat 2, and the interference fit stress of single direction thrust ball bearing 8 inner rings and fixed connection shaft 1 is greater than the interference fit stress of the 3rd hole 5 inwalls of single direction thrust ball bearing 8 outer rings and supporting seat 2.
The conical section of supporting seat 2 in axial direction offer compared with small end center the screwed hole being communicated with the 4th hole 6, screwed hole internal thread is connected with adjustment screw 11, adjustment screw 11 rear ends extend in the 4th hole 6 and with fixed connection shaft 1 front end top interference fit.
Fixed connection shaft 1 is pre-large post-small conical structure in one end, rear portion of baffle ring 10, and this conical tapering is Morse's taper.
The cylindrical section of supporting seat 2 is radially provided with the oil filler point 12 being communicated with the second hole 4, the oil filler point 12 external port places plug cock 13 that has been threaded.
The utility model is in the time that work is used, the rear portion of fixed connection shaft 1 plugs in the hole of tailstock tool, the front end of impactor outer shell directly or be clamped in by fixture on the chuck of machine tool chief axis, the rear end of impactor outer shell is held out against by conical supporting seat 2, in the time carrying out turning or grinding operation, machine tool chief axis drives impactor outer shell and supporting seat 2 High Rotation Speeds by chuck.Because fixed connection shaft 1 of the present utility model is by single-row centripetal thrust bearing 7 and single direction thrust ball bearing 8, so just make supporting seat 2 can bear larger axial force in the time of High Rotation Speed.
In the first hole 3 of supporting seat 2, be screwed hole, gland 9 is threaded in screwed hole, like this can turn gland 9 regulates the end play of single row angular contact ball bearing.In addition, make adjustment screw 11 hold out against fixed connection shaft 1 by screwing adjustment screw 11, can regulate like this end play and the bearing pre-fastening of single-row centripetal thrust bearing 7 and single direction thrust ball bearing 8, can ensure that so single-row radial thrust bearing 7 and single direction thrust ball bearing 8 keep good working order, thereby extend bearing service life, increase work efficiency.
The tapering at fixed connection shaft 1 rear portion adopts Morse's taper, and Morse's taper is the international standard of a tapering, for stationary fit accurately to locate.Because tapering is very little, utilize the principle of frictional force, can transmit certain moment of torsion, again because be taper fit, so can dismantle easily.In the certain limit of same tapering, workpiece is free to dismounting, can not have influence on again result of use in the time of work simultaneously, such as the taper shank drill of boring, if need to dismantle drill bit grinding in using, again loads onto the center that can not affect drill bit after dismounting.Thereby realize the versatility of lathe and grinding machine.
After in the time that the utility model uses one section, open plug cock 13, lubricating oil is injected in the second hole 4 by oil filler point 12, so just can dismantles gland 9 and realize single-row centripetal thrust bearing 7 and single direction thrust ball bearing 8 are lubricated, thereby extend service life of bearing.
Above-described embodiment is not done any pro forma restriction to shape of the present utility model, material, structure etc.; any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all belong to the protection domain of technical solutions of the utility model.
Claims (2)
1. for processing the top of impactor outer shell, comprise fixed connection shaft and supporting seat, supporting seat is made up of cylindrical section and conical section, the larger end of conical section is connected with cylindrical section front end, it is characterized in that: described supporting seat rear end face center by backward front axle to offering level Four shoulder hole, level Four shoulder hole is blind hole, the first hole that level Four shoulder hole is reduced successively by external diameter, the second hole, the 3rd hole and the 4th hole composition, fixed connection shaft front end edge axially extend in level Four shoulder hole, the part of fixed connection shaft in level Four shoulder hole is two-stage multidiameter structure, the two-stage multidiameter part of fixed connection shaft is respectively equipped with single-row centripetal thrust bearing and single direction thrust ball bearing, single-row centripetal thrust bearing is assemblied in the second hole of supporting seat, single direction thrust ball bearing is assemblied in the 3rd hole of supporting seat, the width of single-row centripetal thrust bearing and single direction thrust ball bearing is less than respectively the axial length in the second hole and the 3rd hole, supporting seat is provided with screw thread at the first hole inwall, the first hole internal thread of supporting seat is connected with the gland with the top interference fit of single-row centripetal thrust bearing rear end, fixed connection shaft is provided with the baffle ring for locating single-row centripetal thrust bearing and coordinating with gland inner ring, single-row centripetal thrust bearing front end is provided with the circlip being enclosed within on fixed connection shaft,
The interference fit stress of single-row centripetal thrust bearing inner ring and fixed connection shaft is greater than the interference fit stress of the second hole inwall of single-row centripetal thrust bearing outer ring and supporting seat, and the interference fit stress of single direction thrust ball bearing inner ring and fixed connection shaft is greater than the interference fit stress of the 3rd hole inwall of single direction thrust ball bearing outer ring and supporting seat;
The conical section of described supporting seat in axial direction offer compared with small end center the screwed hole being communicated with the 4th hole, screwed hole internal thread is connected with adjustment screw, adjustment screw rear end extend in the 4th hole and with the top interference fit of fixed connection shaft front end;
Fixed connection shaft is pre-large post-small conical structure in one end, rear portion of baffle ring, and this conical tapering is Morse's taper.
2. according to claim 1 for processing the top of impactor outer shell, it is characterized in that: the cylindrical section of described supporting seat is radially provided with the oil filler point being communicated with the second hole the oil filler point external port place plug cock that has been threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420322090.1U CN203917964U (en) | 2014-06-17 | 2014-06-17 | For processing the top of impactor outer shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420322090.1U CN203917964U (en) | 2014-06-17 | 2014-06-17 | For processing the top of impactor outer shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203917964U true CN203917964U (en) | 2014-11-05 |
Family
ID=51813845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420322090.1U Expired - Fee Related CN203917964U (en) | 2014-06-17 | 2014-06-17 | For processing the top of impactor outer shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203917964U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106002621A (en) * | 2016-07-08 | 2016-10-12 | 河南工钻业有限公司 | Symmetric clamp for grinding of drill core |
-
2014
- 2014-06-17 CN CN201420322090.1U patent/CN203917964U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106002621A (en) * | 2016-07-08 | 2016-10-12 | 河南工钻业有限公司 | Symmetric clamp for grinding of drill core |
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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 |
Granted publication date: 20141105 Termination date: 20150617 |
|
| EXPY | Termination of patent right or utility model |