CN203409594U - Indexing head - Google Patents
Indexing head Download PDFInfo
- Publication number
- CN203409594U CN203409594U CN201320532191.7U CN201320532191U CN203409594U CN 203409594 U CN203409594 U CN 203409594U CN 201320532191 U CN201320532191 U CN 201320532191U CN 203409594 U CN203409594 U CN 203409594U
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- China
- Prior art keywords
- tooth bar
- gear
- indexing
- dividing head
- racks
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- Expired - Fee Related
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- 230000007704 transition Effects 0.000 claims description 17
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
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Abstract
The utility model relates to an indexing device in a machine tool, and aims at providing an indexing head, which is high in indexing efficiency and high in indexing accuracy. According to the technical scheme provided by the utility model, the indexing head comprises a box body, an indexing head spindle, and a gear which is fixedly connected with the indexing head spindle. The indexing head is characterized by also comprising a driving rack and a driven rack, wherein two sides of the gear are meshed with the driving rack and the driven rack, respectively; one end of the driving rack is connected with a drive device. The indexing head has the beneficial effects that the indexing head adopts the two racks (namely the driving rack and the driven rack), and the two racks are meshed with two sides of the gear, so that a clearance between the gear and the racks is removed, and the indexing accuracy is high. The racks move by a certain distance and the gear rotates at a corresponding angle by adopting a manner of meshing the gear and the racks, and thus, the indexing efficiency is high.
Description
Technical field
The utility model relates to the indexing means in lathe, is specifically related to a kind of dividing head.
Background technology
Dividing head is a kind of servicing unit being widely used in the Metal Cutting Machine Tools such as milling machine, drilling machine and grinding machine, for holding workpiece and make workpiece revolution and calibration.Traditional dividing head is mainly comprised of parts such as base, main spindle box, calibration disc, dividing arm and main shafts, workpiece is fixed on chuck, utilize worm-and-wheel gear transmission, this worm-and-wheel gear is connected with main shaft, finally by rotating dividing arm, carries out calibration.In traditional dividing head, in worm-and-wheel gear transmission, there is inter-lobe clearance, cause the precision of calibration not high, and worm screw rotate a few, worm gear just turns an angle, and calibration efficiency is low.
Summary of the invention
The purpose of this utility model is to provide the dividing head that a kind of calibration efficiency is high, indexing accuracy is high.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of dividing head, comprise casing, dividing head spindle, the gear being fixedly connected with dividing head spindle, it is characterized in that: also comprise initiatively tooth bar, driven tooth bar and transition gear, mesh with active tooth bar and driven tooth bar respectively the both sides of gear and transition gear, and initiatively tooth bar one end is connected with drive unit.
Further, also comprise transition gear, the both sides of described transition gear are respectively at active tooth bar and the engagement of driven tooth bar.
Further, dividing head spindle is provided with freewheel clutch.
Further, described drive unit is pneumatic cylinder or hydraulic cylinder.
Further, initiatively between tooth bar and drive unit, be provided with calibrated dial ring.
The beneficial effects of the utility model are:
1, dividing head adopts two toothed rack (initiatively tooth bar with driven tooth bar), and mesh the both sides of two toothed rack and gear, has eliminated the impact on calibration of inter-lobe clearance between wheel and rack, and indexing accuracy is high; The form that adopts rack and pinion engagement, tooth bar moves a certain distance, and gear rotates corresponding angle, and calibration efficiency is high.
2, between tooth bar, be provided with transition gear, initiatively rack drives transition gear rotates, and transition gear drives driven tooth bar to move, and realizes the interlock of active tooth bar and driven tooth bar, saves the energy.
3, on dividing head spindle, freewheel clutch is set, dividing head can not rotated towards a direction under the effect of the power such as cutting force, clamping force and gravity, put only dividing head and in clamping or working angles, rotate and affect indexing accuracy, guarantee the indexing accuracy of dividing head.
4, by pneumatic cylinder or hydraulic cylinder, by driving active tooth bar, move, can complete fast calibration, save trouble and labor.
5, between active tooth bar and drive motors, be provided with calibrated dial ring, by calibrated dial ring, can read easily the number of degrees of calibration.
6, the utility model also has the beneficial effects such as simple in structure, easy to use, cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment mono-in the utility model;
Fig. 2 is the structural representation of embodiment bis-in the utility model;
Wherein Reference numeral is: 1-casing, 2-dividing head spindle, 3-gear, 4-active tooth bar, 5-driven tooth bar, 6-drive unit, 7-transition gear.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
Embodiment mono-:
Dividing head, comprises casing 1, and dividing head spindle 2 is through this casing 1 and be fixedly connected with both coaxial rotation with the gear 3 in casing 1.Because can causing dividing head in locking process, existing dividing head rotates towards a direction, so freewheel clutch is installed on dividing head spindle 2, by this freewheel clutch, can prevent that dividing head from rotating in locking process or in process, guarantee indexing accuracy.In casing 1, being also provided with two tooth bars---active tooth bar 4 and driven tooth bar 5, initiatively tooth bar 4 and driven tooth bar 5 lay respectively at gear 3 both sides, and are meshed with gear 3 both sides.Active tooth bar 4 one end connecting drive devices 6, this drive unit 6 is pneumatic cylinder or hydraulic cylinder, by pneumatic cylinder or hydraulic cylinder, can drive rapidly initiatively tooth bar 4 to move, and is swift in response, drive efficiency is high.Between active tooth bar 4 and drive unit 6, be provided with calibrated dial ring, by reading the data on calibrated dial ring, can understand constantly, grasp the situation of calibration.
During dividing head normal operation, " 0 " graduation mark of calibrated dial ring overlaps with casing 1 surface, drive unit 6 drives initiatively tooth bar 4 to move downward, initiatively tooth bar 4 meshes with gear 3, therefore driven gear 3 rotates counterclockwise, gear 3 and driven tooth bar 5 engagements, thereby driven tooth bar 5 moves upward, when active tooth bar 4 moves downward, the calibrated dial ring connecting with active tooth bar 4 is with 4 motions of active tooth bar, by the graduation mark of reading to overlap with casing 1 surface on calibrated dial ring, the number of degrees of known calibration.
Embodiment bis-
On the basis of embodiment mono-, set up transition gear 7, the parameters such as the diameter of transition gear 7, modulus, the number of teeth are identical with gear 3, and the both sides of transition gear 7 and initiatively tooth bar 4 and 5 engagements of driven tooth bar, when active tooth bar 4 moves, drive transition gear 7 to rotate; Transition gear 7 rotates, and drives driven tooth bar 5 to move.On the whole, mesh with active tooth bar 4, driven tooth bar 5 respectively the both sides of gear 3 and transition gear 7, initiatively the traveling priority driven gear 3 of tooth bar 4 and transition gear 7 rotate, the rotation of driven gear 3 and transition gear 7 drives driven tooth bar 5 traveling priorities, by the interlock between two gears and two toothed rack, can reduce between wheel and rack the error of division causing when the calibration due to inter-lobe clearance, thereby improve indexing accuracy.
In the utility model, rack pinion engagement is replaced to original worm and gear engagement, tooth bar moves one end distance, and gear rotates corresponding angle, and worm gear rotates corresponding angle, and worm screw may turn upper a few circle, thereby calibration efficiency is high; Utilize double rack to eliminate inter-lobe clearance, thereby improve the precision of calibration.
Claims (5)
1. a dividing head, comprise casing (1), dividing head spindle (2), the gear (3) being fixedly connected with dividing head spindle (2), it is characterized in that: also comprise initiatively tooth bar (4) and driven tooth bar (5), mesh with active tooth bar (4) and driven tooth bar (5) respectively the both sides of gear (3), and initiatively tooth bar (4) one end is connected with drive unit (6).
2. dividing head as claimed in claim 1, is characterized in that: also comprise transition gear (7), the both sides of described transition gear (7) are respectively at active tooth bar (4) and driven tooth bar (5) engagement.
3. dividing head as claimed in claim 1, is characterized in that: dividing head spindle (2) is provided with freewheel clutch.
4. dividing head as claimed in claim 1, is characterized in that: described drive unit (6) is pneumatic cylinder or hydraulic cylinder.
5. dividing head as claimed in claim 1, is characterized in that: initiatively between tooth bar (4) and drive unit (6), be provided with calibrated dial ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532191.7U CN203409594U (en) | 2013-08-29 | 2013-08-29 | Indexing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532191.7U CN203409594U (en) | 2013-08-29 | 2013-08-29 | Indexing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203409594U true CN203409594U (en) | 2014-01-29 |
Family
ID=49972519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320532191.7U Expired - Fee Related CN203409594U (en) | 2013-08-29 | 2013-08-29 | Indexing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203409594U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962887A (en) * | 2014-04-29 | 2014-08-06 | 合肥工业大学 | Adjustable indexing mechanism |
| CN104084841A (en) * | 2014-06-20 | 2014-10-08 | 李星 | Indexing head |
| CN104084840A (en) * | 2014-06-20 | 2014-10-08 | 李星 | Quick indexing head |
| CN104097112A (en) * | 2014-06-20 | 2014-10-15 | 李星 | New type dividing head |
| CN104526459A (en) * | 2014-12-31 | 2015-04-22 | 吴方平 | Index plate |
| CN105665826A (en) * | 2016-03-14 | 2016-06-15 | 无为县环江铜业有限公司 | Grinding device for circular arc surface of copper tube |
| CN105855988A (en) * | 2016-06-06 | 2016-08-17 | 蔡燕 | High-speed indexing device |
| CN107030525A (en) * | 2017-06-12 | 2017-08-11 | 周高群 | Collect ball screw automatic dividing attachment integrated with gear and rack |
-
2013
- 2013-08-29 CN CN201320532191.7U patent/CN203409594U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962887A (en) * | 2014-04-29 | 2014-08-06 | 合肥工业大学 | Adjustable indexing mechanism |
| CN104084841A (en) * | 2014-06-20 | 2014-10-08 | 李星 | Indexing head |
| CN104084840A (en) * | 2014-06-20 | 2014-10-08 | 李星 | Quick indexing head |
| CN104097112A (en) * | 2014-06-20 | 2014-10-15 | 李星 | New type dividing head |
| CN104526459A (en) * | 2014-12-31 | 2015-04-22 | 吴方平 | Index plate |
| CN104526459B (en) * | 2014-12-31 | 2017-02-22 | 吴方平 | Index plate |
| CN105665826A (en) * | 2016-03-14 | 2016-06-15 | 无为县环江铜业有限公司 | Grinding device for circular arc surface of copper tube |
| CN105855988A (en) * | 2016-06-06 | 2016-08-17 | 蔡燕 | High-speed indexing device |
| CN107030525A (en) * | 2017-06-12 | 2017-08-11 | 周高群 | Collect ball screw automatic dividing attachment integrated with gear and rack |
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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: 20140129 Termination date: 20150829 |
|
| EXPY | Termination of patent right or utility model |