CN104308655A - Worm dividing head for machine tool - Google Patents
Worm dividing head for machine tool Download PDFInfo
- Publication number
- CN104308655A CN104308655A CN201410553701.8A CN201410553701A CN104308655A CN 104308655 A CN104308655 A CN 104308655A CN 201410553701 A CN201410553701 A CN 201410553701A CN 104308655 A CN104308655 A CN 104308655A
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- CN
- China
- Prior art keywords
- worm
- dividing
- head
- dividing head
- worm screw
- 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.)
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Classifications
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- 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
- B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
- B23Q16/02—Indexing equipment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
Abstract
The invention discloses a worm dividing head for a machine tool. The worm dividing head comprises a dividing head box (14), a spindle (3), and a servo motor (18), wherein a worm wheel (9) is arranged on the spindle (3), and a worm is also arranged on the dividing head; the worm is connected with the servo motor (18) through a transmission mechanism, and the worm is meshed with the dividing worm wheel (9); the worm is a double-pitch worm (17), and a spiral part of the double-pitch worm (17) comprises two different pitch parts in the axial direction. With the technical scheme, the tooth thickness changes along with the rotation of the worm, so that the backlash between the worm and the worm wheel is adjusted to achieve the precision requirement. The worm dividing head provided by the invention has the advantages of random adjustment and convenience in operation, and meets the dividing requirement.
Description
Technical field
The present invention relates to the technical field that the invention belongs to machine-building equipment, relate to the technological equipment of machine cut machining tool, more particularly, the present invention relates to a kind of worm indexing head of lathe.
Background technology
At present, digital control processing is applied more and more extensive in machine-building processing.
But the dividing head on Digit Control Machine Tool, due to reasons such as the wearing and tearing in assembling, use procedure, can cause between the mating surface of worm and wheel and produce gap, affect the indexing accuracy of numerically controlled processing equipment, thus affect the machining accuracy of Digit Control Machine Tool.
If adopt artificial back lash of eliminating worm and wheel, will the production efficiency of digital control processing be affected, and, be difficult to the precision controlling adjustment.
Summary of the invention
The invention provides a kind of worm indexing head of lathe, its objective is the back lash adjusting worm and wheel more easily.
To achieve these goals, the technical scheme that the present invention takes is:
The worm indexing head of lathe of the present invention, comprise dividing head casing, main shaft, servomotor, described main shaft is provided with dividing worm wheel, and described dividing head is also provided with worm screw, described worm screw is connected by transmission mechanism with servomotor, and described worm screw engages with dividing worm wheel; Described worm screw is two pitch airscrew worm screw, and the spiral part of described two pitch airscrew worm screw is made up of two not identical pitch portion in the axial direction thereof.
Described servomotor is arranged on dividing head casing by motor reducer and motor seat board.
Described transmission mechanism is synchronous belt drive mechanism, and this mechanism arranges synchronous pulley on the output shaft of motor reducer, arranges lower synchronous pulley at two pitch airscrew worm end, and described upper synchronous pulley and lower synchronous pulley pass through toothed belt transmission.
Described dividing head is installed BT knife bar, described BT knife bar is arranged on main shaft by adjustable centring sleeve.
The rear end of described main shaft is provided with clamping cylinder parts, and described BT knife bar is fastened on described adjustable centring sleeve by pull bar by described clamping cylinder parts.
Described dividing worm wheel is fastened on described main shaft by worm gear tensioner tapered sleeve.
The top of described dividing head casing is opening, arranges case lid at opening part.
The bottom of described dividing head casing arranges plug.
The side of described dividing head casing is arranged sees oily window.
The present invention adopts technique scheme, and transverse tooth thickness is rotated along with worm screw and changes, thus the back lash of adjustment worm and wheel, reach required precision, its advantage to regulate arbitrarily, easy to operate, adapts to the requirement of calibration.
Accompanying drawing explanation
Mark in content shown in accompanying drawing and figure is as follows:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation that the A-A in Fig. 1 analyses and observe.
Be labeled as in figure:
1, BT knife bar, 2, adjustable centring sleeve, 3, main shaft, 4, front gland, 5, cone spacer, 6, outer ring spacer, 7, locking nut, 8, worm gear tensioner tapered sleeve, 9, dividing worm wheel, 10, deep groove ball bearing, 11, outside framework oil seal, 12, rear bearing locking nut, 13, clamping cylinder parts, 14, dividing head casing, 15, angular contact bearing, 16, case lid, 17, two pitch airscrew worm screw, 18, servomotor, 19, motor seat board, 20, upper synchronous pulley, 21, Timing Belt, 22, lower synchronous pulley, 23, rear axle bearing sleeve, 24, outside framework oil seal, 25, plug, 26, see oily window, 27, setscrew nut, 28, outside framework oil seal, 29, locking nut, 30, front axle bearing sleeve, 31, taper roll bearing.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technical scheme.
Structure is as shown in Figure 1 and Figure 2 the worm indexing head of lathe of the present invention, is one of essential core parts of five-shaft numerical control cutter and tool grinding machine.Its required precision of beating controls within 0.002mm.This dividing head comprises dividing head casing 14, main shaft 3, servomotor 18, described main shaft 3 is provided with dividing worm wheel 9, described dividing head is also provided with worm screw, and described worm screw is connected by transmission mechanism with servomotor 18, and described worm screw engages with dividing worm wheel 9.
The front end of described main shaft 3, is arranged on the forward spindle hole of dividing head casing 14 by two angular contact bearings 15; The end face that these two angular contact bearings 15 are relative is separated respectively by cone spacer 5 and outer ring spacer 6; Gland 4 before the outer face of spindle hole is arranged; The inner face of inner angular contact bearing 15 is locked by locking nut 7.
The rear end of described main shaft 3, is arranged on the rear spindle hole of dividing head casing 14 by deep groove ball bearing 10; Rear spindle hole is sealed by outside framework oil seal 11 by described deep groove ball bearing 10, and is locked by rear bearing locking nut 12.
One end of described worm screw to be arranged on before dividing head casing 14 on worm hole by taper roll bearing 31, front axle bearing sleeve 30; Described front axle bearing sleeve 30 realizes location by the end face direction of setscrew nut 27 worm hole before dividing head casing 14; Described taper roll bearing 31 is locked described worm screw by locking nut 29; Outside framework oil seal 28 is set in the outer face of described worm screw, realizes sealing.
The other end of described worm screw is arranged on the rear worm hole of dividing head casing 14 by rear axle bearing sleeve 23; And realize sealing by outside framework oil seal 24.
In order to solve prior art Problems existing and overcome its defect, realize the goal of the invention adjusting the back lash of worm and wheel more easily, the technical scheme that the present invention takes is:
As shown in Figure 1 and Figure 2, the worm indexing head of lathe of the present invention, described worm screw is two pitch airscrew worm screw 17, and the spiral part of described two pitch airscrew worm screw 17 is made up of two not identical pitch portion in the axial direction thereof.
Because precision is high, present invention employs newly designed two pitch airscrew worm structure.The feature of this structure is the pitch being divided into by worm screw two, left and right not identical.Two pitch airscrew worm screw is commonly called as gradually thick worm screw, and its transverse tooth thickness is rotated along with worm screw and changes, thus the back lash of adjustment and worm gear, reach required precision, the advantage of this structure to regulate arbitrarily, easy to operate, adapts to calibration requirement.
Described servomotor 18 is arranged on dividing head casing 14 by motor reducer and motor seat board 19.
Described transmission mechanism is synchronous belt drive mechanism, this mechanism arranges synchronous pulley 20 on the output shaft of motor reducer, arrange lower synchronous pulley 22 in two pitch airscrew worm screw 17 end, described upper synchronous pulley 20 and lower synchronous pulley 22 are by Timing Belt 21 transmission.
Described synchronous belt drive mechanism is arranged on the rear end of worm screw.Namely the left side in Fig. 2.
Described dividing head is installed BT knife bar 1, described BT knife bar 1 is arranged on main shaft 3 by adjustable centring sleeve 2.
The rear end of described main shaft 3 is provided with clamping cylinder parts 13, and described BT knife bar 1 is fastened on described adjustable centring sleeve 2 by pull bar by described clamping cylinder parts 13.
Described dividing worm wheel 9 is fastened on described main shaft 3 by worm gear tensioner tapered sleeve 8.
The top of described dividing head casing 14 is opening, arranges case lid 16 at opening part.Described servomotor 18 is arranged on the top of case lid 16.This opening for checking the inner workings of dividing head, and for more oil change.
The bottom of described dividing head casing 14 arranges plug 25.This plug is used for, when more oil change, being discharged by waste oil.
The side of described dividing head casing 14 is arranged sees oily window 26.This sight oil window 26 is for the liquid level of the working condition and lubricating oil of observing lubricating oil.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (9)
1. the worm indexing head of a lathe, comprise dividing head casing (14), main shaft (3), servomotor (18), described main shaft (3) is provided with dividing worm wheel (9), described dividing head is also provided with worm screw, described worm screw is connected by transmission mechanism with servomotor (18), and described worm screw engages with dividing worm wheel (9);
It is characterized in that:
Described worm screw is two pitch airscrew worm screw (17), and the spiral part of described two pitch airscrew worm screw (17) is made up of two not identical pitch portion in the axial direction thereof.
2. according to the worm indexing head of lathe according to claim 1, it is characterized in that: described servomotor (18) is arranged on dividing head casing (14) by motor reducer and motor seat board (19).
3. according to the worm indexing head of lathe according to claim 2, it is characterized in that: described transmission mechanism is synchronous belt drive mechanism, this mechanism arranges synchronous pulley (20) on the output shaft of motor reducer, arrange lower synchronous pulley (22) in two pitch airscrew worm screw (17) end, described upper synchronous pulley (20) and lower synchronous pulley (22) are by Timing Belt (21) transmission.
4. according to the worm indexing head of lathe according to claim 1, it is characterized in that: described dividing head is installed BT knife bar (1), described BT knife bar (1) is arranged on main shaft (3) by adjustable centring sleeve (2).
5. according to the worm indexing head of lathe according to claim 4, it is characterized in that: the rear end of described main shaft (3) is provided with clamping cylinder parts (13), described BT knife bar (1) is fastened on described adjustable centring sleeve (2) by pull bar by described clamping cylinder parts (13).
6. according to the worm indexing head of lathe according to claim 1, it is characterized in that: described dividing worm wheel (9) is fastened on described main shaft (3) by worm gear tensioner tapered sleeve (8).
7. according to the worm indexing head of lathe according to claim 1, it is characterized in that: the top of described dividing head casing (14) is opening, arranges case lid (16) at opening part.
8. according to the worm indexing head of lathe according to claim 1, it is characterized in that: the bottom of described dividing head casing (14) arranges plug (25).
9. according to the worm indexing head of lathe according to claim 1, it is characterized in that: the side of described dividing head casing (14) is arranged sees oily window (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410553701.8A CN104308655A (en) | 2014-10-17 | 2014-10-17 | Worm dividing head for machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410553701.8A CN104308655A (en) | 2014-10-17 | 2014-10-17 | Worm dividing head for machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104308655A true CN104308655A (en) | 2015-01-28 |
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ID=52364038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410553701.8A Pending CN104308655A (en) | 2014-10-17 | 2014-10-17 | Worm dividing head for machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104308655A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108080973A (en) * | 2017-12-24 | 2018-05-29 | 芜湖洪金机床有限公司 | The adjustable numerical control rotating platform of gap of worm to central post bottom plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002066876A (en) * | 2000-08-24 | 2002-03-05 | Tsudakoma Corp | Dividing head using dual lead worm |
| JP2002205244A (en) * | 2001-01-11 | 2002-07-23 | Tsudakoma Corp | Dividing device and its assembling method |
| CN202447988U (en) * | 2012-02-07 | 2012-09-26 | 芜湖戴杰精工数控科技有限公司 | Dividing head |
| CN203875429U (en) * | 2014-05-28 | 2014-10-15 | 南京工程学院 | Variable-lead worm dividing head frame for gear grinding machine |
| CN204123205U (en) * | 2014-10-17 | 2015-01-28 | 芜湖洪金机床有限公司 | A kind of worm indexing head of lathe |
-
2014
- 2014-10-17 CN CN201410553701.8A patent/CN104308655A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002066876A (en) * | 2000-08-24 | 2002-03-05 | Tsudakoma Corp | Dividing head using dual lead worm |
| JP2002205244A (en) * | 2001-01-11 | 2002-07-23 | Tsudakoma Corp | Dividing device and its assembling method |
| CN202447988U (en) * | 2012-02-07 | 2012-09-26 | 芜湖戴杰精工数控科技有限公司 | Dividing head |
| CN203875429U (en) * | 2014-05-28 | 2014-10-15 | 南京工程学院 | Variable-lead worm dividing head frame for gear grinding machine |
| CN204123205U (en) * | 2014-10-17 | 2015-01-28 | 芜湖洪金机床有限公司 | A kind of worm indexing head of lathe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108080973A (en) * | 2017-12-24 | 2018-05-29 | 芜湖洪金机床有限公司 | The adjustable numerical control rotating platform of gap of worm to central post bottom plate |
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Application publication date: 20150128 |