CN107309445A - A kind of lathe spindle unit - Google Patents
A kind of lathe spindle unit Download PDFInfo
- Publication number
- CN107309445A CN107309445A CN201710380584.3A CN201710380584A CN107309445A CN 107309445 A CN107309445 A CN 107309445A CN 201710380584 A CN201710380584 A CN 201710380584A CN 107309445 A CN107309445 A CN 107309445A
- Authority
- CN
- China
- Prior art keywords
- main shaft
- bearing
- shaft
- collet sleeve
- chuck
- 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
Links
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
-
- 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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
Abstract
A kind of lathe spindle unit, fore bearing and rear bearing, guide pin bushing and splined section including main shaft, on main shaft, the main shaft is arranged on bearing block, push rod is provided with the main shaft, push rod, which is fixedly arranged at the front end with collet sleeve, the collet sleeve, is provided with chuck, and elastic component is provided between the chuck and collet sleeve, the rear end of the main shaft is provided with main shaft positioning device, and the main shaft positioning device includes locating wheel, alignment pin and positioning cylinder.The present invention improves the positioning precision of main shaft, reduces the substandard products rate of output, improves production efficiency, and temperature rise is low, and the precision influence on converted products is small.
Description
Technical field
The present invention relates to be related to a kind of main axle unit, more particularly to a kind of lathe spindle unit.
Background technology
Numerical control is walked on market today uses electric main shaft and sleeve-type main shaft shaft type milling complex centre main shaft more.High terminal
The electric main shaft of bed is the Japanese world.Base of the Fanuc and MITSUBISHI companies in their advanced servomotor technologies
With the electric main shaft function admirable of famous Company's co-production such as NSK, at a high speed up to 30000 turns, angle positioning accurate on plinth
It is close, operate steadily.Particularly Fanuc companies have almost monopolized the market of Chinese numerically controlled lathe electric main shaft.But Japan's electricity is main
Axle supply Chinese market price is all high to go against accepted conventions, high 180,000 RMB, and delivery date is also up to three or four months, even
Half a year.Medium and small lathe is difficult to cooperate therewith.The country also have Shandong win top grade numerically controlled lathe electro spindle but because they with it is famous
The control system of brand is incompatible, typically all using Frequency Converter Control.Allow rotating speed also not high, say it is to allow 6000 turns,
But it is actual up to more than 4000 turns higher with regard to temperature rise, shake the larger precision influence on converted products larger.Along with positioning precision
It is not bery high, therefore can't be widely accepted.
Chinese patent Authorization Notice No. is CN 201086132Y, and authorized announcement date is the utility model on July 16th, 2008
Patent discloses a kind of lathe spindle unit, and it has main shaft, is installed on the front and rear two bearings on main shaft, is placed on the set outside bearing
There is pull bar in cylinder, main shaft, pull bar is fixedly arranged at the front end with collet sleeve, and chuck is placed in collet sleeve and is provided with elastic component, folder between the two
Head openend is equipped with the conical surface being mutually adapted with collet sleeve, and chuck and chuck upper shield are pressed in main shaft by end cap.
Said apparatus may be such that processing rigidity reinforced, and process more accurate, but due to walking core type numerical control cutting center
With C-axis scale division function, it is inadequate to depend synchronous tightening force alone, and device main shaft in cutting is certain to shake, at this time fixed
Position precision is just run, and can not just ensure to process the precision of part, causing the occurrence probability of waste product increases.
The content of the invention
The purpose of the present invention is that there is provided a kind of main shaft orientation effect is good the problem of overcoming existing apparatus main shaft orientation effect difference
Lathe spindle unit.
To realize object above, technical solution of the invention is：A kind of lathe spindle unit, including main shaft, installation
Fore bearing and rear bearing, guide pin bushing and splined section on main shaft, the main shaft are arranged on bearing block, are set in the main shaft
Push rod is equipped with, push rod is fixedly arranged at the front end with collet sleeve, the collet sleeve and is provided with chuck, is provided between the chuck and collet sleeve
Elastic component, the rear end of the main shaft is provided with main shaft positioning device, and the main shaft positioning device includes locating wheel, alignment pin and determined
Position cylinder.
It is provided with the spindle drum on spindle servo electric machine, the power transmission shaft of the spindle servo electric machine and timing belt is installed
Wheel, the synchronous pulley and main shaft are connected by timing belt.
It is provided with the main shaft on Open and close claw, taper ring set and adjusting nut, Open and close claw and rotation shaft core is installed.
The splined section includes splined shaft and spline bearing overcoat, passes through between the spline bearing overcoat and bearing block
Hardboard is connected, and is connected between splined shaft and main shaft, guide pin bushing by timing belt.
The fore bearing is interference fit with main shaft, and shrink value is 0.002~0.004mm, and the rear bearing is with main shaft
Gap coordinates, and fit clearance is 0.002~0.006mm.
Compared with prior art, the present invention has the benefit that：
1st, invention increases main shaft positioning device, the positioning precision of main shaft is improved, the substandard products rate of output is reduced, improves life
Efficiency is produced, cost is reduced.
2nd, the structure on same spindle drum is arranged in the present invention using main shaft, spindle servo electric machine, so both be ensure that
Main shaft rigidity, the depth of parallelism of guaranteed spindle servo electric machine central axis and alignment of shafts axis.
3rd, fore bearing and main shaft are interference fit in the present invention, and rear bearing coordinates with main shaft for gap, so install and are beneficial to
There is swell gap behind the accuracy guarantee and operating adstante febre of chuck.
4th, the present invention in transmission using spindle servo electric machine band 3GT synchronous pulleys, transmission efficiency, gearratio it is accurate and
Stable drive.
5th, the present invention in forward and backward bearing use high-speed spindle bearing special grease, once fill in right amount can 3 years not
Change, and spindle drum takes Open architecture, and performance of ventilating is good, and temperature rise is all within 25 DEG C when actual 8000 turns.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention（Section view）.
Fig. 2 is Fig. 1 A-A faces sectional view.
Fig. 3 is Fig. 1 B-B faces sectional view.
In figure：Main shaft 1, fore bearing 2, rear bearing 3, guide pin bushing 4, bearing block 5, push rod 6, collet sleeve 7, chuck 8, elastic component 9,
Main shaft positioning device 10, locating wheel 11, alignment pin 12, positioning cylinder 13, spindle servo electric machine 14, synchronous pulley 15, Open and close claw
16, taper ring set 17, adjusting nut 18 rotates shaft core 19, splined shaft 20, spline bearing overcoat 21, hardboard 22, shift fork 23, axle
Hold 24.
Embodiment
Below in conjunction with brief description of the drawings, the present invention is further detailed explanation with embodiment：
Referring to Fig. 1, Fig. 3, a kind of lathe spindle unit, including main shaft 1, the fore bearing 2 on main shaft 1 and rear bearing 3, lead
Set 4 and splined section, the splined section include splined shaft 20 and spline bearing overcoat 21, the main shaft 1 and main axle servo
Motor 14 is installed on bearing block 5, and push rod 6 is provided with the main shaft 1, and push rod 6 is fixedly arranged at the front end with collet sleeve 7, the folder
Chuck 8 is provided with headgear 7, elastic component 9 is provided between the chuck 8 and collet sleeve 7, the end cap of the front end of main shaft 1 by chuck 8 with
The lid of collet sleeve 7 is pressed in main shaft 1, and the rear end of the main shaft 1 is provided with main shaft positioning device 10, and the main shaft positioning device 10 is wrapped
Include and synchronous pulley 15 be installed on locating wheel 11, alignment pin 12 and positioning cylinder 13, the power transmission shaft of the spindle servo electric machine 14,
The synchronous pulley 1 and main shaft 1 are connected by timing belt, and hardboard 22 is passed through between the spline bearing overcoat 21 and bearing block 5
It is connected, is connected between splined shaft 20 and main shaft 1, guide pin bushing 4 by timing belt, it is possible to achieve the fortune synchronous with guide pin bushing 4 of main shaft 1
Turn.
The fore bearing 2 is interference fit with main shaft 1, and shrink value is 0.002~0.004mm, the rear bearing 3 and main shaft
1 is that gap coordinates, and fit clearance is 0.002~0.006mm, is so installed after accuracy guarantee and operating adstante febre beneficial to chuck
There is swell gap in face.
It is provided with the main shaft 1 on Open and close claw 16, taper ring set 17 and adjusting nut 18, Open and close claw 16 and rotation is installed
Shaft core 19.
Referring to Fig. 1-Fig. 2, the process of main shaft chuck locking material is：Be opened and closed cylinder by flake joint connect shift fork 23 and
Bearing 24 on shift fork 23, when being opened and closed cylinder and promoting forward, shift fork 23 and bearing 24 can drive taper ring set 17 vertically to
Upper displacement, taper ring set 17, which can be pushed up, holds Open and close claw 16 so that Open and close claw 16 makees pull bar motion around rotation shaft core 19, by the He of push rod 6
Collet sleeve 7 is pushed to move ahead, the compressing locking material of chuck 8；The process of main shaft chuck unwound material is：When opening and closing cylinder is promoted backward
When, shift fork 23 and bearing 24 can drive taper ring set 17 to shift axially downward, and taper ring set 17 can be driven to be taken off with Open and close claw 16
From collet sleeve 7 being separated with chuck 8 by the elastic component 9 in collet sleeve 7, so that unwound material.
Referring to Fig. 3, when lathe starts C-axis scale division function, main shaft 1 is stopped after indexing, and positioning cylinder 13 obtains signal promotion
Alignment pin 12 blocks locating wheel 11, so that the radial clearance of main shaft 1 and rear bearing 3 be eliminated, reaches locating effect.Milling is sold out
Afterwards, C-axis scale division function stops, and positioning cylinder 13 drives alignment pin 12 to pull back, and completes position fixing process.
Claims (3)
1. a kind of lathe spindle unit, including main shaft（1）, installed in main shaft（1）On fore bearing（2）With rear bearing（3）, guide pin bushing
（4）And splined section, the main shaft（1）Installed in bearing block（5）On, the main shaft（1）Inside it is provided with push rod（6）, push rod
（6）It is fixedly arranged at the front end with collet sleeve（7）, the collet sleeve（7）Inside it is provided with chuck（8）, the chuck（8）With collet sleeve（7）It
Between be provided with elastic component（9）, it is characterised in that：The main shaft（1）Rear end main shaft positioning device is installed（10）, the main shaft determine
Position device（10）Including locating wheel（11）, alignment pin（12）And positioning cylinder（13）, the spindle drum（5）On main shaft be installed watched
Take motor（14）, the spindle servo electric machine（14）Power transmission shaft on synchronous pulley is installed（15）, the synchronous pulley（15）
And main shaft（1）Connected by timing belt, the main shaft（1）On Open and close claw is installed（16）, taper ring set（17）And adjusting nut
（18）, Open and close claw（16）On rotation shaft core is installed（19）.
2. a kind of lathe spindle unit according to claim 1, it is characterised in that：The splined section includes splined shaft
（20）With spline bearing overcoat（21）, the spline bearing overcoat（21）With bearing block（5）Between pass through hardboard（22）It is connected,
Splined shaft（20）With main shaft（1）, guide pin bushing（4）Between connected by timing belt.
3. a kind of lathe spindle unit according to claim 1, it is characterised in that：The fore bearing（2）With main shaft（1）For
Interference fit, shrink value is 0.002~0.004mm, the rear bearing（3）With main shaft（1）Coordinate for gap, fit clearance is
0.002~0.006mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710380584.3A CN107309445A (en) | 2017-05-25 | 2017-05-25 | A kind of lathe spindle unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710380584.3A CN107309445A (en) | 2017-05-25 | 2017-05-25 | A kind of lathe spindle unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107309445A true CN107309445A (en) | 2017-11-03 |
Family
ID=60182170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710380584.3A Pending CN107309445A (en) | 2017-05-25 | 2017-05-25 | A kind of lathe spindle unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107309445A (en) |
-
2017
- 2017-05-25 CN CN201710380584.3A patent/CN107309445A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171103 |