CN201711544U - Front end positioning structure of spindle of numerical control lathe headstock - Google Patents
Front end positioning structure of spindle of numerical control lathe headstock Download PDFInfo
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- CN201711544U CN201711544U CN2010202584014U CN201020258401U CN201711544U CN 201711544 U CN201711544 U CN 201711544U CN 2010202584014 U CN2010202584014 U CN 2010202584014U CN 201020258401 U CN201020258401 U CN 201020258401U CN 201711544 U CN201711544 U CN 201711544U
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- headstock
- spindle
- main shaft
- face
- bearing
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- Expired - Fee Related
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Abstract
The utility model provides a front end positioning structure of a spindle of a numerical control lathe headstock. The structure comprises the headstock, a front end cover arranged at the front end of the headstock, the spindle arranged in center holes of the headstock and the front end cover, a spindle bearing arranged in the headstock and used for supporting the spindle to rotate, and a guide sleeve arranged at the back end of the spindle bearing; an inner gland transversely clamping the headstock is arranged on the periphery of the guide sleeve; the inner wall surface of the center hole in the headstock is a stepless linear through-hole inner cavity surface; a waterproof bush of the spindle bearing is arranged between the front end cover and the headstock; and a circular ring water-isolating groove and a radial drainage groove communicated with the water-isolating groove are formed on the outer end surface of the center hole of the front end cover. The spindle mounting center hole at the front end of the headstock is changed to the stepless linear through-hole, thereby facilitating cutter installation, observation, processing and detection at the spindle mounting hole and on the back end surface, enabling the spindle bearing to be in well contact with the inner gland, and ensuring the rotation accuracy and the positioning accuracy of the lathe spindle; and the bush for preventing cooling liquid to seep into the spindle bearing is arranged between the headstock and the front end cover, thereby prolonging the service life of the spindle and the bearing.
Description
Technical field
The utility model relates to spindle stock main shaft location structure, especially in regard to the improvement of numerically controlled lathe headstock spindle system front end location structure.
Background technology
Be provided with step in the spindle mounting hole in the headstock of domestic light-duty Digit Control Machine Tool at present, as shown in Figure 6, because can't observe also can't on-line measurement for step end face in processing, therefore be difficult to guarantee the perpendicularity requirement of step inner face and spindle mounting hole center line, because main shaft bearing and end face contact-making surface are bad, influence the spindle mounted quality, therefore work in-process can not reach technological requirement, the headstock spindle installing hole has step in addition, cause sealing poor, main shaft is in running work, cooling fluid enters spindle mounting hole easily, after causing hole inner bearing lubricating grease to soak into, the easy heating up of main shaft bearing is damaged, cause main shaft not run well, particularly influence stability and machining accuracy that machine tool chief axis runs up.
The utility model content
The defective that the utility model exists at former headstock spindle system front end location structure, design a kind of headstock spindle front end location structure, make spindle mounting hole and rear end face be convenient to cutter and install, observe processing and detection, to improve stability and the machining accuracy that main shaft runs up.
Numerically controlled lathe headstock spindle front end location structure, comprise headstock, be located at the drive end bearing bracket of headstock front end, be located at the main shaft in headstock and the drive end bearing bracket centre bore, be located at the main shaft bearing that supports main shaft is rotated in the headstock, be located at the guide pin bushing of described main shaft bearing rear end, laterally clamp the internal gland of headstock in described guide pin bushing outer periphery, the internal face that it is characterized in that centre bore in the headstock is wheel chair access straight line pylone inner cavity surface, between drive end bearing bracket and headstock, establish the waterproof lining of main shaft bearing, the radially rhone of on the outer face of described drive end bearing bracket centre bore, establishing annulus water proof groove and being connected with the water proof groove.
Above-mentioned design beneficial effect is, change headstock front end main shaft mounting center hole into wheel chair access clear opening inner cavity surface by the step inwall, making spindle mounting hole and rear end face be convenient to cutter installs and observes, also be convenient to processing and detection, the spindle mounting hole tolerance reaches ± 0.005mm, inner face flatness≤0.003mm, after internal gland and the headstock assembling, the perpendicularity of location end face and centre bore center line is between 0.005～0.008mm, make the main shaft bearing can be good, guarantee the assembly quality of main shaft with the internal gland contact-making surface.Structurally guarantee the rotating accuracy and the positioning accuracy of machine tool chief axis, reach the designing requirement of precision machine tool, between headstock and drive end bearing bracket, establish and the main shaft bearing lining of fit mutually, the rhone of on the end face in the drive end bearing bracket centre bore outside, establishing annulus water proof groove and communicating, carry out cooling fluid and dredge circulation, prevent that cooling fluid from infiltrating in the main shaft bearing, improve the service life of main shaft and bearing.
Description of drawings
Fig. 1 is the utility model lathe headstock spindle front-end architecture profile.
Fig. 2 is headstock and the spindle hole profile is installed.
Fig. 3 is the internal gland profile.
Fig. 4 a is the drive end bearing bracket drawing in side sectional elevation, and Fig. 4 b is the drive end bearing bracket profilograph.
Fig. 5 is former axis system front-end architecture profile.
Fig. 6 is former headstock spindle installing hole profile.
The specific embodiment
Below in conjunction with accompanying drawing the utility model 26S Proteasome Structure and Function is briefly explained.
Referring to Fig. 1 and shown in Figure 5, numerically controlled lathe headstock spindle front end location structure comprises headstock 1, drive end bearing bracket 2, lining 7, internal gland 10 and guide pin bushing 11, lathe spindle 5 is installed in the main shaft bearing 8, main shaft bearing 8 is fixedly mounted in the headstock 1, drive end bearing bracket 2 is located at the front end of headstock 1, the internal gland 10 of horizontal clamping headstock 1 is established in the rear end of headstock 1, and by headstock cross screw 6 main shaft bearing 8 laterally is fixed tightly in the headstock 1.The guide pin bushing 11 of main shaft bearing 8 rear ends is vertically tightened up by cushion block nut 12 and headstock 1.The upper and lower end face of the upper and lower end face of internal gland 10 inboards and headstock 1 inboard closely contacts mutually and is located on the same vertical plane A with the inner face of guide pin bushing 11.Centre bore D is perpendicular in this vertical plane A and the headstock.Also be provided with case lid 9 on the headstock 1, the front end face of main shaft 5 is established ring flange 3 and folder thing head 4.
Referring to Fig. 2 and shown in Figure 3, the location end face A of indication among Fig. 2 and Fig. 3, be the vertical plane A of indication among Fig. 1, this location end face A is headstock 1 and the tight mutually anchor ring that contacts of internal gland 10, the also vertical plane that intersects vertically at the center line D and the inner face of headstock 1 centre bore, the center bore inner wall face of described headstock 1 is wheel chair access straight line pylone inner cavity surface, flatness≤0.003mm of this location end face A, after internal gland 10 assembled with headstock 1, the perpendicularity of location end face A and centre bore center line D was between 0.005～0.008mm.Guaranteed that from structure the rotating accuracy of lathe spindle and positioning accuracy are to reach the specification requirement of precision machine tool.As Fig. 5～shown in Figure 6, the centre bore rear end of the headstock 1 of existing precise numerical control machine is step-like inwall, by guide pin bushing 11 direct and headstock 1 clampings, the flatness of installation end face and the perpendicularity of installation can't be observed, can't be detected to the A face during mounting cutter on the step of centre bore.
Referring to shown in Figure 4, wherein Fig. 4 a is the left view of drive end bearing bracket and bush assembly, Fig. 4 b is the longitudinal section view of drive end bearing bracket and bush assembly, on drive end bearing bracket 2 centre bore cylindrical anchor rings, establish annulus water proof groove 13, the water leg 14 of establishing the annulus indent on preceding capping 2 center hole walls dots in Fig. 4 a, establish in the annular groove lower end of water proof groove 13 and water leg 14 one radially rhone 15 be connected with water proof groove 13 and water leg 14, add the waterproof lining 7 of main shaft bearing 8 between drive end bearing bracket 2 and the headstock 1, prevent that cooling fluid from entering main shaft 5 installing holes from drive end bearing bracket 2 centre bores.Cooling fluid flows into rhone 15 from water leg 14, the cooling fluid that does not enter the headstock centre bore flows into rhone 15 from water proof groove 13, flow out headstock 1 again, the cooling fluid of infiltrating drive end bearing bracket 2 centre bores is dredged guide effect, prevent that fundamentally cooling fluid from entering in the main shaft bearing, guarantee main shaft high speed stabilization of speed and machining accuracy, thereby prolong the service life that main shaft of numerical control machine tool holds.
Claims (5)
1. numerically controlled lathe headstock spindle front end location structure, comprise headstock (1), be located at the drive end bearing bracket (2) of headstock (1) front end, be located at the interior main shaft (5) of centre bore of headstock (1) and drive end bearing bracket (2), be located at the main shaft bearing (8) that the interior supports main shaft of headstock (1) is rotated, be located at the guide pin bushing (11) of described main shaft bearing rear end, laterally clamp the internal gland (10) of headstock in described guide pin bushing outer periphery, the internal face that it is characterized in that the interior centre bore of headstock (1) is wheel chair access straight line pylone inner cavity surface, between drive end bearing bracket (2) and headstock (1), establish the waterproof lining (7) of main shaft bearing, the radially rhone (15) of on the outer face of described drive end bearing bracket (2) centre bore, establishing annulus water proof groove (13) and being connected with water proof groove (13).
2. a kind of numerically controlled lathe headstock spindle front end location structure according to claim 1 is characterized in that the upper and lower end face that described internal gland (10) is inboard and the inboard upper and lower end face of headstock (1) closely contacts and be located on the same vertical plane (A) with the inner face of guide pin bushing (11).
3. a kind of numerically controlled lathe headstock spindle front end location structure according to claim 2 is characterized in that the flatness≤0.003mm at described vertical plane (A).
4. a kind of numerically controlled lathe headstock spindle front end location structure according to claim 2 is characterized in that the described vertical plane (A) and the perpendicularity of headstock centre bore center line (D) are 0.005～0.008mm.
5. a kind of numerically controlled lathe headstock spindle front end location structure according to claim 1 is characterized in that a rhone that radially communicates (15) is established in the annular groove lower end of described water proof groove (13) and water leg (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202584014U CN201711544U (en) | 2010-07-08 | 2010-07-08 | Front end positioning structure of spindle of numerical control lathe headstock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202584014U CN201711544U (en) | 2010-07-08 | 2010-07-08 | Front end positioning structure of spindle of numerical control lathe headstock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201711544U true CN201711544U (en) | 2011-01-19 |
Family
ID=43457543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202584014U Expired - Fee Related CN201711544U (en) | 2010-07-08 | 2010-07-08 | Front end positioning structure of spindle of numerical control lathe headstock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201711544U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102371364A (en) * | 2011-09-16 | 2012-03-14 | 安阳斯普机械有限公司 | Tooling spindle of gear grinding machine |
| CN102554278A (en) * | 2012-01-12 | 2012-07-11 | 浙江辛子精工机械股份有限公司 | Evenly divided oil cavity static-dynamic pressure shafting unit for machine tool |
| CN103100931A (en) * | 2011-11-14 | 2013-05-15 | 深圳市速锋科技有限公司 | Dust cover of ball high-speed main shaft |
-
2010
- 2010-07-08 CN CN2010202584014U patent/CN201711544U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102371364A (en) * | 2011-09-16 | 2012-03-14 | 安阳斯普机械有限公司 | Tooling spindle of gear grinding machine |
| CN103100931A (en) * | 2011-11-14 | 2013-05-15 | 深圳市速锋科技有限公司 | Dust cover of ball high-speed main shaft |
| CN102554278A (en) * | 2012-01-12 | 2012-07-11 | 浙江辛子精工机械股份有限公司 | Evenly divided oil cavity static-dynamic pressure shafting unit for machine tool |
| CN102554278B (en) * | 2012-01-12 | 2014-10-22 | 浙江辛子精工机械股份有限公司 | Evenly divided oil cavity static-dynamic pressure shafting unit for machine tool |
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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: 20110119 Termination date: 20150708 |
|
| EXPY | Termination of patent right or utility model |