CN104785798A - Main shaft structure of numerically-controlled machine tool - Google Patents
Main shaft structure of numerically-controlled machine tool Download PDFInfo
- Publication number
- CN104785798A CN104785798A CN201510184779.1A CN201510184779A CN104785798A CN 104785798 A CN104785798 A CN 104785798A CN 201510184779 A CN201510184779 A CN 201510184779A CN 104785798 A CN104785798 A CN 104785798A
- Authority
- CN
- China
- Prior art keywords
- knife bar
- equal
- machine tool
- main shaft
- cutter head
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
Abstract
The invention provides a main shaft structure of a numerically-controlled machine tool. The main shaft structure comprises a cutter bar connected with a main shaft and a cutter bit connected with the cutter bar. The head of the cutter bar is inserted into the main shaft. The tail of the cutter bar is in an inverted-tapered shape, the tail is connected with the cutter bit, and the specific value of the diameter of the end of the tail and the diameter of the cutter bit is smaller than or equal to 1.7:1. The specific value of the diameter of the end of the main shaft and the diameter of the head of the cutter bar is smaller than or equal to 1.5:1. The taper of the head of the cutter bar is smaller than or equal to 2 degrees. The taper of the tail of the cutter bar is smaller than or equal to 10 degrees and larger than or equal to 3 degrees. The specific value of the length of the tail of the cutter bar and the length of the portion, exposed out of the cutter bar, of the cutter bit is smaller than or equal to 2.5:1. The surface of the cutter bit is covered with an ultramicron layer. The main shaft structure has the advantages of being simple and reasonable in structure, flexible to operate, high in working efficiency and long in service life.
Description
Technical field
The present invention relates to a kind of main axle structure of Digit Control Machine Tool.
Background technology
Chinese patent literature CN 102059408A disclosed a kind of main shaft device of chain digital control gear hobbing machine for 05 month on the 18th in 2011, this main shaft device comprises knife bar assembly, knife bar assembly clamping body and cutter-exchange mechanism, knife bar assembly is by knife bar, hobboing cutter, toolsetting pad, and axle sleeve, locking nut and knife bar blind rivet are formed.Knife bar assembly clamping body is made up of square key and claw assembly, and cutter-exchange mechanism is made up of pull bar, piston rod, disk spring, cylinder body, ring flange, support, swivel joint and limit switch.During this chain digital control gear hobbing machine work, processing is difficult to for trickle place, makes user's not too satisfaction.
Summary of the invention
Object of the present invention aim to provide a kind of simple and reasonable, flexible operation, operating efficiency are high, the main axle structure of the Digit Control Machine Tool of long service life, to overcome weak point of the prior art.
The main axle structure of a kind of Digit Control Machine Tool designed by this object, comprise the knife bar connected with main shaft, the cutter head connected with knife bar, its architectural feature is that the head of knife bar is inserted in main shaft, the afterbody of knife bar is back taper, this afterbody connects with cutter head, and the ratio of the end diameter of afterbody and the diameter of cutter head is less than or equal to 1.7:1.
Further, the ratio of the diameter of the diameter of described spindle nose and the head of knife bar is less than or equal to 1.5:1.
Further, the tapering of the head of described knife bar is less than or equal to 2 degree.
Further, the tapering of the afterbody of described knife bar is less than or equal to 10 degree and is more than or equal to 3 degree.
Further, the ratio that the length of the afterbody of described knife bar and cutter head expose the length at the position of knife bar is less than or equal to 2.5:1.
Further, the length L2 that described cutter head 3 exposes the position of knife bar 2 is less than or equal to four times of cutter head 3 diameter.
Further, described bit interface is coated with ultra micro granulosa.
Further, described ultra micro granulosa is ultra micron TiAlN ALTIN layer, ultra micron silicon aluminum nitrides titanium AlTiSiN layer or ultra micron titanium nitride TIN layer.
The head of knife bar is inserted in main shaft by the present invention, and the afterbody of knife bar is back taper, and this afterbody connects with cutter head, and the ratio of the end diameter of afterbody and the diameter of cutter head is less than or equal to 1.7:1; Make cutter head can enter into the machining area of relative narrower, and the processing intensity of cutter head can be kept.
The present invention is coated with ultra micro granulosa at bit interface, improves case hardness and the peel resistance of cutter head, thus improves the processing characteristics of cutter head, roughing can be directly carried out to fine finishining to heat treatment die, reduce number of changing knife, improve the working (machining) efficiency of Digit Control Machine Tool, reduce cost of manufacture.
The ratio of the diameter of the diameter of the spindle nose in the present invention and the head of knife bar is less than or equal to 1.5:1; The tapering of the head of knife bar is less than or equal to 2 degree; Adding man-hour, effectively can prevent the head of knife bar from producing relative to spindle nose and swing, thus guarantee crudy.
The ratio that the length at the back taper position of the knife bar in the present invention and cutter head expose the length at the position of knife bar is less than or equal to 2.5:1; Or the length L2 that described cutter head 3 exposes the position of knife bar 2 is less than or equal to four times of cutter head 3 diameter, can improve the rigidity of cutter head, prevent cutter head work in-process from affecting crudy because of distortion.
The present invention have simple and reasonable, flexible operation, operating efficiency are high and the feature of long service life.
Accompanying drawing explanation
Fig. 1 is the biopsy cavity marker devices schematic diagram of one embodiment of the invention.
In figure: 1 is main shaft, 2 is knife bar, and 2.1 is afterbody, and 3 is cutter head.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
See Fig. 1, the main axle structure of this Digit Control Machine Tool, comprise the knife bar 2 connected with main shaft 1, the cutter head 3 connected with knife bar 2, the head of knife bar 2 is inserted in main shaft 1, the afterbody 2.1 of knife bar 2 is in back taper, and this afterbody 2.1 connects with cutter head 3, and the ratio of the end diameter D5 of afterbody 2.1 and the diameter D6 of cutter head 3 is less than or equal to 1.7:1.
In the present embodiment, the ratio of the diameter D2 of the diameter D1 of main shaft 1 end and the head of knife bar 2 is less than or equal to 1.5:1.
The tapering α of the head of knife bar 2 is less than or equal to 2 degree.
The tapering β of the afterbody 2.1 of knife bar 2 is less than or equal to 10 degree and is more than or equal to 3 degree.
The ratio that the length L1 of the afterbody 2.1 of knife bar 2 and cutter head 3 expose the length L2 at the position of knife bar 2 is less than or equal to 2.5:1.Or the length L2 that described cutter head 3 exposes the position of knife bar 2 is less than or equal to four times of cutter head 3 diameter.
Cutter head 3 surface coverage has ultra micro granulosa.In the present embodiment, ultra micro granulosa can be ultra micron TiAlN ALTIN layer, ultra micron silicon aluminum nitrides titanium AlTiSiN layer or ultra micron titanium nitride TIN layer.
The present invention is on the basis of guaranteeing knife bar intensity, by controlling the shape of knife bar 2 and having ultra micro granulosa in cutter head 3 surface coverage, can directly carry out roughing to fine finishining to heat treatment die, reduce number of changing knife, improve the working (machining) efficiency of Digit Control Machine Tool, conscientiously reduce cost of manufacture.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (8)
1. the main axle structure of a Digit Control Machine Tool, comprise the knife bar (2) connected with main shaft (1), the cutter head (3) connected with knife bar (2), it is characterized in that the head of knife bar (2) is inserted in main shaft (1), the afterbody (2.1) of knife bar (2) is in back taper, this afterbody (2.1) connects with cutter head (3), and the end diameter (D5) of afterbody (2.1) is less than or equal to 1.7:1 with the ratio of the diameter (D6) of cutter head (3).
2. the main axle structure of Digit Control Machine Tool according to claim 1, is characterized in that the diameter (D1) of described main shaft (1) end is less than or equal to 1.5:1 with the ratio of the diameter (D2) of the head of knife bar (2).
3. the main axle structure of Digit Control Machine Tool according to claim 1, is characterized in that the tapering (α) of the head of described knife bar (2) is less than or equal to 2 degree.
4. the main axle structure of Digit Control Machine Tool according to claim 1, is characterized in that the tapering (β) of the afterbody (2.1) of described knife bar (2) is less than or equal to 10 degree and is more than or equal to 3 degree.
5. the main axle structure of Digit Control Machine Tool according to claim 1, the ratio that the length (L1) that it is characterized in that the afterbody (2.1) of described knife bar (2) and cutter head (3) expose the length (L2) at the position of knife bar (2) is less than or equal to 2.5:1.
6. the main axle structure of Digit Control Machine Tool according to claim 1, is characterized in that length (L2) that described cutter head (3) exposes the position of knife bar (2) is less than or equal to four times of cutter head (3) diameter.
7., according to the main axle structure of the arbitrary described Digit Control Machine Tool of claim 1 to 6, it is characterized in that described cutter head (3) surface coverage has ultra micro granulosa.
8. the main axle structure of Digit Control Machine Tool according to claim 7, is characterized in that described ultra micro granulosa is ultra micron aluminium nitride titanium layer, ultra micron silicon aluminum nitrides titanium layer or ultra micron titanium nitride layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510184779.1A CN104785798A (en) | 2015-04-20 | 2015-04-20 | Main shaft structure of numerically-controlled machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510184779.1A CN104785798A (en) | 2015-04-20 | 2015-04-20 | Main shaft structure of numerically-controlled machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104785798A true CN104785798A (en) | 2015-07-22 |
Family
ID=53551233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510184779.1A Pending CN104785798A (en) | 2015-04-20 | 2015-04-20 | Main shaft structure of numerically-controlled machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104785798A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080232911A1 (en) * | 2007-03-23 | 2008-09-25 | Hyatt Gregory A | Method and assembly for rotating a cutting insert during a turning operation and inserts used therein |
| CN201175778Y (en) * | 2008-03-17 | 2009-01-07 | 羊立民 | Borehole no-parking automatic cutter relieving device |
| CN101502897A (en) * | 2009-03-22 | 2009-08-12 | 大连经济技术开发区伊达工具有限公司 | High precision reamer |
| CN201316830Y (en) * | 2008-11-27 | 2009-09-30 | 哈尔滨汽轮机厂有限责任公司 | Rough milling cutter for concave groove |
| CN202701530U (en) * | 2012-06-29 | 2013-01-30 | 中国石油集团石油管工程技术研究院 | Off-axis turning tool rod for machining inner threads |
| CN203936397U (en) * | 2014-06-16 | 2014-11-12 | 陆安琪 | A kind of knife bar of replaceable cutter |
| CN104385023A (en) * | 2014-10-22 | 2015-03-04 | 湘潭大学 | Inner cooling damping heat-shrinkable tool bar device |
-
2015
- 2015-04-20 CN CN201510184779.1A patent/CN104785798A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080232911A1 (en) * | 2007-03-23 | 2008-09-25 | Hyatt Gregory A | Method and assembly for rotating a cutting insert during a turning operation and inserts used therein |
| CN201175778Y (en) * | 2008-03-17 | 2009-01-07 | 羊立民 | Borehole no-parking automatic cutter relieving device |
| CN201316830Y (en) * | 2008-11-27 | 2009-09-30 | 哈尔滨汽轮机厂有限责任公司 | Rough milling cutter for concave groove |
| CN101502897A (en) * | 2009-03-22 | 2009-08-12 | 大连经济技术开发区伊达工具有限公司 | High precision reamer |
| CN202701530U (en) * | 2012-06-29 | 2013-01-30 | 中国石油集团石油管工程技术研究院 | Off-axis turning tool rod for machining inner threads |
| CN203936397U (en) * | 2014-06-16 | 2014-11-12 | 陆安琪 | A kind of knife bar of replaceable cutter |
| CN104385023A (en) * | 2014-10-22 | 2015-03-04 | 湘潭大学 | Inner cooling damping heat-shrinkable tool bar device |
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| C06 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150722 |
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| RJ01 | Rejection of invention patent application after publication |