CN204818975U - Digit control machine tool that positioning accuracy is high - Google Patents
Digit control machine tool that positioning accuracy is high Download PDFInfo
- Publication number
- CN204818975U CN204818975U CN201520547376.4U CN201520547376U CN204818975U CN 204818975 U CN204818975 U CN 204818975U CN 201520547376 U CN201520547376 U CN 201520547376U CN 204818975 U CN204818975 U CN 204818975U
- Authority
- CN
- China
- Prior art keywords
- bearing
- screw rod
- rod transmission
- transmission axle
- housing
- 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.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 claims description 56
- 238000000034 method Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003252 repetitive Effects 0.000 description 1
Abstract
The utility model relates to a digit control machine tool that positioning accuracy is high, including the frame, be equipped with main shaft and main drive motor in the frame, still be equipped with horizontal, fore -and -aft screw drive axle respectively in the frame, be equipped with the tight structure that prestretches of just offsetting extension that the thermal energy brought at the operation in -process in the one end of screw drive axle, should prestretch tight structure including the bearing frame, the cover is equipped with the bearing housing on the bearing frame, is equipped with bearing spacer and bearing in the bearing housing, bearing spacer and bearing housing establish the tip at the screw drive axle, still be equipped with the zip structure that gives screw drive axle pretightning force on the bearing frame. The utility model has the advantages of simple structure, machining precision are high, positioning accuracy is high.
Description
[technical field]
The utility model relates to the high Digit Control Machine Tool of a kind of positioning precision.
[background technology]
Existing Digit Control Machine Tool, all main shaft claming workpiece, laterally, longitudinal screw rod transmission axle drives various cutter to cut, but because transverse direction, longitudinal screw rod transmission axle are in operation process, fever phenomenon can be there is, screw rod transmission axle all can have phenomenon of expanding with heat and contract with cold, and like this after the heating of each screw rod transmission axle, will expand elongated.So operationally will increase error, reduce the precision of processing.Be necessary to solve this technical problem for this reason.
[summary of the invention]
The purpose of this utility model is to overcome the deficiencies in the prior art, provides the Digit Control Machine Tool that a kind of structure is simple, machining accuracy is high, positioning precision is high.
For solving the problems of the technologies described above, the utility model have employed following technical proposals:
The Digit Control Machine Tool that a kind of positioning precision is high, comprise frame 1, frame 1 is provided with main shaft and main drive motor, frame 1 is also respectively equipped with transverse direction, longitudinal screw rod transmission axle 6, it is characterized in that being provided with the pretension structure just offsetting the elongation that thermal expansion brings in running in one end of screw rod transmission axle 6, this pretension structure includes bearing block 2, bearing block 2 is arranged with bearing holder (housing, cover) 3, bearing spacer 4 and bearing 5 is provided with in bearing holder (housing, cover) 3, described bearing spacer 4 and bearing 5 are set in the end of screw rod transmission axle 6, bearing block 2 is also provided with the zip structure giving screw rod transmission axle pretightning force.
The Digit Control Machine Tool that a kind of positioning precision as above is high, it is characterized in that described zip structure comprises the first nut 7 being located at screw rod transmission axle 6 end, screw rod transmission axle 6 end is provided with the first external screw thread, internal thread and the bearing holder (housing, cover) nut 10 with screw-internal thread fit is also provided with in bearing holder (housing, cover) 3 terminus inner, first nut 7 externally threadedly to coordinate and bearing holder (housing, cover) nut 10 realizes bearing 5 with screw-internal thread fit with first, screw rod transmission axle 6 is locked on bearing holder (housing, cover) 3, bearing holder (housing, cover) 3 is provided with the second external screw thread 8, second external screw thread 8 is provided with and bearing holder (housing, cover) 3 and screw rod transmission axle is pulled outward thus realizes giving the second nut 9 that screw rod transmission axle strains at power, described second nut 9 top is pressed on bearing block 2.
This case is under the state of lathe cold, and first give the pretension that screw rod transmission axle is certain, the pretension such as given makes power transmission shaft elongate 0.04mm.Then lathe is when first running status, the thermal expansion of screw rod transmission axle, slowly elongated from 0.01mm-0.04mm.After normal operation, the elongated 0.04mm of screw rod transmission axle, then, when the state of screw rod transmission axle running, make screw rod transmission axle and bearing not by pulling force, and screw rod transmission axle remains a deformation state, thus when transmission, becomes precision high.The repetitive positioning accuracy of screw rod transmission axle carry its tools is made to reach 0.005mm.
In addition, this case utilizes the first nut and the 3rd nut to realize giving screw rod transmission axle certain pretightning force, and its structure is simple, regulates also convenient, fast.
[accompanying drawing explanation]
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is the cut-away view of pretension structure.
[specific embodiment]
Below in conjunction with drawings and Examples, the utility model is described further.
As shown in the figure, the Digit Control Machine Tool that a kind of positioning precision is high, comprises frame 1, and frame 1 is provided with main shaft and main drive motor, and frame 1 is also respectively equipped with horizontal, longitudinal screw rod transmission axle 6.Main shaft claming workpiece, horizontal, longitudinal screw rod transmission axle drives various cutter to cut, and horizontal like this, longitudinal screw rod transmission axle drives various cutter to need constantly resetting.The pretension structure just offsetting the elongation that thermal expansion brings in running is provided with in one end of described screw rod transmission axle 6.Like this, under the state of lathe cold, the pretension that pretension structure first gives screw rod transmission axle certain, the pretension such as given makes power transmission shaft elongate 0.04mm.Then lathe is when first running status, the thermal expansion of screw rod transmission axle, slowly elongated from 0.01mm-0.04mm.After normal operation, the elongated 0.04mm of screw rod transmission axle, then, when the state of screw rod transmission axle running, make screw rod transmission axle and bearing not by pulling force, and screw rod transmission axle remains a deformation state, thus when transmission, becomes precision high.
Specifically, pretension structure includes bearing block 2, bearing block 2 is arranged with bearing holder (housing, cover) 3, bearing spacer 4 and bearing 5 is provided with in bearing holder (housing, cover) 3, described bearing spacer 4 and bearing 5 are set in the end of screw rod transmission axle 6, and bearing block 2 is also provided with the zip structure giving screw rod transmission axle pretightning force.Described zip structure comprises the first nut 7 being located at screw rod transmission axle 6 end, and screw rod transmission axle 6 end is provided with the first external screw thread.First nut 7 externally threadedly to coordinate and bearing holder (housing, cover) nut 10 realizes bearing 5, screw rod transmission axle 6 to be locked on bearing holder (housing, cover) 3 with screw-internal thread fit with first, that is to say that bearing 5 and screw rod transmission axle 6 are locked in bearing holder (housing, cover) 3 by the first nut 7 together with bearing holder (housing, cover) nut 10.Bearing 5 is clipped on bearing holder (housing, cover) 3 by the first nut 7, and screw rod transmission axle 6 also can not change with the relative position of bearing holder (housing, cover) 3.Bearing holder (housing, cover) 3 is provided with the second external screw thread 8, second external screw thread 8 is provided with and bearing holder (housing, cover) 3 and screw rod transmission axle is pulled outward thus realizes giving the second nut 9 that screw rod transmission axle strains at power, tighten the second nut 9, second nut 9 will push up the lateral surface being pressed in bearing block 2, and the second nut 9 is in the process be screwed into, bearing holder (housing, cover) 3 is pulled outward, thus realizes screw rod transmission axle to pull outward, realize giving screw rod transmission axle pretightning force.And regulate the size of pretightning force, need to decide according to screw rod transmission axle the degree of heat in the running and retracted position.
Although reference above embodiment describes the utility model in detail, but be it will be apparent to one skilled in the art that by the disclosure, when not departing from principle of the present utility model and the scope of described claim restriction, can make a variety of changes the utility model or revise.Therefore, the detailed description of disclosure embodiment is only used for explaining, instead of is used for limiting the utility model, but is defined by the subject-matter of the claims the scope of protection.
Claims (2)
1. the Digit Control Machine Tool that a positioning precision is high, comprise frame (1), frame (1) is provided with main shaft and main drive motor, frame (1) is also respectively equipped with transverse direction, longitudinal screw rod transmission axle (6), it is characterized in that being provided with in one end of screw rod transmission axle (6) the pretension structure just offsetting the elongation that thermal expansion brings in running, this pretension structure includes bearing block (2), bearing block (2) is arranged with bearing holder (housing, cover) (3), bearing spacer (4) and bearing (5) is provided with in bearing holder (housing, cover) (3), described bearing spacer (4) and bearing (5) are set in the end of screw rod transmission axle (6), bearing block (2) is also provided with the zip structure giving screw rod transmission axle pretightning force.
2. the Digit Control Machine Tool that a kind of positioning precision according to claim 1 is high, it is characterized in that described zip structure comprises the first nut (7) being located at screw rod transmission axle (6) end, screw rod transmission axle (6) end is provided with the first external screw thread, internal thread and the bearing holder (housing, cover) nut (10) with screw-internal thread fit is also provided with in bearing holder (housing, cover) (3) terminus inner, first nut (7) externally threadedly to coordinate and bearing holder (housing, cover) nut (10) and screw-internal thread fit realize bearing (5) with first, screw rod transmission axle (6) is locked on bearing holder (housing, cover) (3), bearing holder (housing, cover) (3) is provided with the second external screw thread (8), second external screw thread (8) is provided with and bearing holder (housing, cover) (3) and screw rod transmission axle is pulled outward thus realizes giving the second nut (9) that screw rod transmission axle strains at power, described second nut (9) top is pressed on bearing block (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520547376.4U CN204818975U (en) | 2015-07-24 | 2015-07-24 | Digit control machine tool that positioning accuracy is high |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520547376.4U CN204818975U (en) | 2015-07-24 | 2015-07-24 | Digit control machine tool that positioning accuracy is high |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204818975U true CN204818975U (en) | 2015-12-02 |
Family
ID=54676616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520547376.4U Active CN204818975U (en) | 2015-07-24 | 2015-07-24 | Digit control machine tool that positioning accuracy is high |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204818975U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105922049A (en) * | 2016-07-08 | 2016-09-07 | 江苏元利数控机床有限公司 | Ball screw prestretching mechanism and prestretching method thereof |
| CN107009208A (en) * | 2017-04-07 | 2017-08-04 | 大连辽南船厂 | Deep hole grinder grinding head device |
-
2015
- 2015-07-24 CN CN201520547376.4U patent/CN204818975U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105922049A (en) * | 2016-07-08 | 2016-09-07 | 江苏元利数控机床有限公司 | Ball screw prestretching mechanism and prestretching method thereof |
| CN107009208A (en) * | 2017-04-07 | 2017-08-04 | 大连辽南船厂 | Deep hole grinder grinding head device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103495889B (en) | Milling clamper for five grades of selector forks of clamping | |
| CN102151876B (en) | Linkage compressed type multihole drilling tool | |
| CN204818975U (en) | Digit control machine tool that positioning accuracy is high | |
| CN203900958U (en) | Synchronous clamp | |
| CN204321682U (en) | The two-sided tapping fixture of Multiaxial tapping machine | |
| CN204818136U (en) | Numerical control lathe collet chuck steps up device | |
| CN202655744U (en) | Tapping toolbar for lathe | |
| CN202010826U (en) | Internal expanding type gear hobbing fixture | |
| CN204843080U (en) | Special machine tool is milled in numerical control for fluting | |
| CN204094192U (en) | A kind of upset drill jig of machining cross holes | |
| CN203509639U (en) | Pressure-measurable composite clamp | |
| CN205519708U (en) | Violently walk toolbox of formula manipulator | |
| CN204277057U (en) | The traversing governor motion of positional cylinder | |
| CN204209000U (en) | The curved mould adapter of a kind of bending machine | |
| CN204565770U (en) | The spacing guiding mechanism in a kind of side | |
| CN203887588U (en) | High-position clamping apparatus of numerical-control vertical lathe | |
| CN203679789U (en) | Pressure-measurable high-precision fine adjustment clamp | |
| CN203509640U (en) | Pressure-measurable machine tool clamp | |
| CN204277127U (en) | For the internal expansion type fixture of numerical control horizontal gear hobbing machine | |
| CN202428200U (en) | Center frame for quickly clamping workpiece | |
| CN204396923U (en) | A kind of gang tool for processing automobile brake drum boss | |
| CN203442063U (en) | Rolling and sliding composite lead screw pair | |
| CN203956118U (en) | A kind of workpiece inner sphere working gang tool | |
| CN203509698U (en) | Double-staggered-teeth sliding block cutter | |
| CN203437933U (en) | Novel long axle type processing and fixing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 528467 No. 10, Guang Yao Road, Dongsheng Town, Dongsheng Town, Guangdong City, Zhongshan province two Patentee after: ZHONGSHAN JIESHANG TONGCHENG NC MACHINE TOOL CO., LTD. Address before: 528467 No. 10, Guang Yao Road, Dongsheng Town, Dongsheng Town, Guangdong City, Zhongshan province two Patentee before: ZHONGSHAN JSTOMI CNC MACHINE TOOL CO., LTD. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Numerically-controlled machine tool with high positioning precision Effective date of registration: 20200602 Granted publication date: 20151202 Pledgee: Science and Technology Branch of Torch Development Zone of Zhongshan Rural Commercial Bank Co.,Ltd. Pledgor: ZHONGSHAN JSTOMI CNC MACHINE TOOL Co.,Ltd. Registration number: Y2020980002678 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |