CN202668326U - High-precision screw rod feeding system for numerical control grinder - Google Patents
High-precision screw rod feeding system for numerical control grinder Download PDFInfo
- Publication number
- CN202668326U CN202668326U CN 201220302619 CN201220302619U CN202668326U CN 202668326 U CN202668326 U CN 202668326U CN 201220302619 CN201220302619 CN 201220302619 CN 201220302619 U CN201220302619 U CN 201220302619U CN 202668326 U CN202668326 U CN 202668326U
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- screw rod
- contact bearing
- screw mandrel
- angular contact
- bearing group
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- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The utility model provides a high-precision screw rod feeding system for a numerical control grinder. The high-precision screw rod feeding system comprises an end cover, front and rear angle contact bearing groups, a bearing base, a locking nut and a screw rod; the screw rod is mounted between two fixing and supporting devices; each fixing and supporting device comprises an end cover, a front angle contact bearing group, a rear angle contact bearing group, a bearing base and a locking nut; the screw rod is supported by the front and rear angle contact bearing groups and is axially fixed; the front and rear angle contact bearing groups are pre-tightened through locking nuts, and are respectively mounted inside the bearing base; the front and rear angle contact bearing groups are fixed through the end covers mounted at both ends of the bearing base; and an adjusting gasket for pre-stretching the screw rod is arranged between the inner side of the bearing base and the end cover through the rear angle contact bearing group. The high-precision screw rod feeding system provided by the utility model pre-tightening the bearing and pre-stretching the screw rod with the advantages of simplicity and convenience in operation, convenience in measurement and adjustment, high adjusting precision and the like, so that not only can the axial rigidity of the screw rod be improved, but also the thermal displacement influence brought by temperature rise can be overcome. Therefore, the rigidity and the precision of the feeding system can be efficiently ensured.
Description
Technical field
The utility model relates to the preprocess method of high precision machine tool screw mandrel feed system, particularly a kind of numerically control grinder high accuracy screw mandrel feed system.
Background technology
High-speed machining is 21 century new and high technology, it is take high efficiency, high accuracy, great surface quality as essential characteristic, obtaining a wide range of applications in the industries such as machine-building and equipment, obtained great technical economic benefit, is the important component part of contemporary advanced manufacturing technology.High-speed machining at first will have the Digit Control Machine Tool that matches, and this Digit Control Machine Tool must have high-speed spindle system and feed system accurately at a high speed simultaneously, could realize the stability of dimensional accuracy in the part High-speed machining process.
The high precision numerical control grinding machine of at present domestic production and use is generally single-ended pretension, is about to carry out pretension near the bearing of motor side, and the bearing of the other end is only done the supplemental support effect.The feed system of this structure is in the grinding technique develop rapidly, today that grinding speed, grinding and feeding amount, grinding multiplicity constantly promote, more and more difficultly overcome because the impact that the screw mandrel temperature rises and the concentrated wear of the rear screw mandrel that works long hours brings its grinding and feeding precision in the work, the phenomenon of the unstable and then precise decreasing of feed accuracy often just appears after a period of time in lathe in work, directly have influence on the quality of its grinding work piece.Therefore, how reducing feed system because the precision brought of temperature rise is disturbed, how effectively to guarantee after the screw mandrel wearing and tearing retentivity of himself precision, is the problem that the high precision numerical control grinding machine must solve.
The utility model content
The purpose of this utility model be to overcome the deficiencies in the prior art and provide a kind of, measurement easy and simple to handle to bearing, screw mandrel comprehensive pretreatment, easy to adjust, adjust the high numerically control grinder of precision with high accuracy screw mandrel feed system.
A kind of numerically control grinder high accuracy screw mandrel feed system, comprise end cap, front-and-back angle contact bearing group, bearing block, locking nut and screw mandrel, it is characterized in that: described screw mandrel is installed between two fixed support devices, described fixed support device comprises described end cap, front angular contact bearing group, rear angular contact bearing group, bearing block and locking nut, described screw mandrel is by before described, rear angular contact bearing group supports and axial restraint, before described, rear angular contact bearing group also is installed in respectively in the described bearing block by described locking nut pretension, before described, rear angular contact bearing group is fixed by the described end cap that is installed in described bearing block two ends, and described rear angular contact bearing group is equipped with the adjustment pad of realizing the screw mandrel prestretched between described bearing block inboard and described end cap.
In the utility model, the fixing adjustment pad of convenient described end cap and described front angular contact bearing group is installed between the bearing block of described front angular contact bearing group inboard and the described end cap.
Adopt such scheme, the utlity model has following advantage:
1. two ends fixed support, the feed system axial stiffness significantly improves.
2. the prestretched screw mandrel has compensated thermal walking, has guaranteed the feed accuracy of system.
In sum, screw mandrel has adopted the fixing supporting way in two ends, on the one hand, but the equal pretension of the angular contact bearing group at two ends, the effective like this axial rigidity that promotes screw mandrel; On the other hand, the pretension of bearing is so that the caloric value that screw mandrel work script just has strengthens, and it is large that the thermal walking of screw mandrel also becomes thereupon, in order to remedy this displacement, screw mandrel carried out prestretched, and measured data comprehensively obtained when the amount of tension basis of prestretched had the lathe grinding now.Thus, both promote the axial rigidity of screw mandrel, overcome again the thermal walking impact that temperature rise brings, effectively guaranteed rigidity and the precision of feed system.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, describe the specific embodiment that a kind of numerically control grinder is used high accuracy screw mandrel feed system in detail.
As shown in Figure 1, the utility model comprises, locking nut 1, end cap 2, spacer ring 3, bearing block 4, rear angular contact bearing group 5 is adjusted pad 6, end cap 7, and screw mandrel 8, end cap 9 is adjusted pad 10, front angular contact bearing group 11, bearing block 12, spacer ring 13, end cap 14, locking nut 15 parts such as grade form;
The comprehensive pretreatment of whole system comprises the pretension of two ends rigid bearing and prestretched two parts of screw mandrel, and its operating principle is as follows:
1, the pretension of bearing
As shown in Figure 1, screw mandrel 8 right-hand member fixed supports (motor link) are adjusted pad 10 by end cap 9, front angular contact bearing group 11, bearing block 12, spacer ring 13, end cap 14, locking nut 15 forms, and wherein locking nut 15 is used for front angular contact bearing group 11 is carried out pretension; In addition, by adjusting pad 10, end cap 9, end cap 14 compress bearing outer ring, and this moment, whole screw axis was to being fixed.
Screw mandrel 8 left end fixed supports are by locking nut 1, end cap 2, and spacer ring 3, bearing block 4, rear angular contact bearing group 5 is adjusted pad 6, and end cap 7 forms, and wherein locking nut 1 is used for rear angular contact bearing group 5 is carried out pretension.
2, the prestretched of screw mandrel
As shown in Figure 1, at first guarantee to leave between the outer ring of end cap 2 and rear angular contact bearing group 5 end play greater than prestretched length, then realize the prestretched of screw mandrels by adjusting pad 6, end cap 7.Be the thickness that match grinding is adjusted pad 6, the end play that makes itself and end cap 7 is prestretched value (amount of tension of prestretched value according to existing lathe grinding time measured data comprehensively obtain), and is then by the screw on the end cap 7 that it is fixing until the gap disappearance is 0 with bearing block 4.So namely finished the prestretched of screw mandrel.
Claims (2)
1. a numerically control grinder is with high accuracy screw mandrel feed system, comprise end cap, front-and-back angle contact bearing group, bearing block, locking nut and screw mandrel, it is characterized in that: described screw mandrel is installed between two fixed support devices, described fixed support device comprises described end cap, front angular contact bearing group, rear angular contact bearing group, bearing block and locking nut, described screw mandrel is by before described, rear angular contact bearing group supports and axial restraint, before described, rear angular contact bearing group also is installed in respectively in the described bearing block by described locking nut pretension, before described, rear angular contact bearing group is fixed by the described end cap that is installed in described bearing block two ends, and described rear angular contact bearing group is equipped with the adjustment pad of realizing the screw mandrel prestretched between described bearing block inboard and described end cap.
2. numerically control grinder according to claim 1 is characterized in that: the fixing adjustment pad of convenient described end cap and described front angular contact bearing group is installed between the bearing block inboard of described front angular contact bearing group and the described end cap with high accuracy screw mandrel feed system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220302619 CN202668326U (en) | 2012-06-26 | 2012-06-26 | High-precision screw rod feeding system for numerical control grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220302619 CN202668326U (en) | 2012-06-26 | 2012-06-26 | High-precision screw rod feeding system for numerical control grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202668326U true CN202668326U (en) | 2013-01-16 |
Family
ID=47489259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220302619 Expired - Fee Related CN202668326U (en) | 2012-06-26 | 2012-06-26 | High-precision screw rod feeding system for numerical control grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202668326U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425641A (en) * | 2016-09-26 | 2017-02-22 | 苏州德扬数控机械有限公司 | Lead screw prestretching structure of numerical control machine tool |
| CN107378536A (en) * | 2017-08-07 | 2017-11-24 | 江苏思维福特机械科技股份有限公司 | A kind of lathe precision drive seat |
| CN113560933A (en) * | 2021-07-22 | 2021-10-29 | 上海诺倬力机电科技有限公司 | Screw rod stretching support structure and mounting method thereof |
| CN113649824A (en) * | 2021-07-22 | 2021-11-16 | 上海诺倬力机电科技有限公司 | Five-axis cradle processing machine tool |
-
2012
- 2012-06-26 CN CN 201220302619 patent/CN202668326U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425641A (en) * | 2016-09-26 | 2017-02-22 | 苏州德扬数控机械有限公司 | Lead screw prestretching structure of numerical control machine tool |
| CN107378536A (en) * | 2017-08-07 | 2017-11-24 | 江苏思维福特机械科技股份有限公司 | A kind of lathe precision drive seat |
| CN113560933A (en) * | 2021-07-22 | 2021-10-29 | 上海诺倬力机电科技有限公司 | Screw rod stretching support structure and mounting method thereof |
| CN113649824A (en) * | 2021-07-22 | 2021-11-16 | 上海诺倬力机电科技有限公司 | Five-axis cradle processing 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: 20130116 Termination date: 20150626 |
|
| EXPY | Termination of patent right or utility model |