CN205254687U - Index head - Google Patents

Index head Download PDF

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Publication number
CN205254687U
CN205254687U CN201521067214.7U CN201521067214U CN205254687U CN 205254687 U CN205254687 U CN 205254687U CN 201521067214 U CN201521067214 U CN 201521067214U CN 205254687 U CN205254687 U CN 205254687U
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CN
China
Prior art keywords
hollow shaft
workpiece
collet
piston
number key
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.)
Expired - Fee Related
Application number
CN201521067214.7U
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Chinese (zh)
Inventor
曾国强
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Individual
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Individual
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Priority to CN201521067214.7U priority Critical patent/CN205254687U/en
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Publication of CN205254687U publication Critical patent/CN205254687U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an index head for current index head's heaviness, the difficult shortcoming of adorning short and small part of pressing from both sides, its characterized in that: including the frame, be equipped with the main shaft hole on the frame, install rotatable hollow shaft in the main shaft hole, install in the hollow shaft with endocentric, the circumference chuck axle fixed, axially movable of hollow shaft, the one end that the chuck axle is close to the work piece is equipped with makes grafting complex collet with the hollow shaft, work piece clamping components is constituteed with the chuck axle together to the hollow shaft, be equipped with the piston groove on the frame, correspond the piston groove on the frame and install the piston gland, install the piston that is used for driving chuck axle axial displacement in the piston groove, install on the work piece clamping components and be used for driving work piece clamping components pivoted graduation gear wheel. The utility model discloses, air piston and frame structure as an organic whole have reduced the size of index head along work piece axial direction, and pressing from both sides of the short and small work piece of aerodynamic three -jaw awl chuck specially adapted is adorned moreover.

Description

A kind of dividing head
Technical field
The utility model relates to machining equipment field, is specifically related to a kind of dividing head.
Background technology
Dividing head is mounted in can be divided into circumference any equal portions, workpiece be fixed on to particular process angle a kind of machine tool accessories on lathe, utilize various difform cutters to process parts such as the positive tooth wheel of flower key axle ﹑ ﹑ spiral spur gears for auxiliary lathe, generally comprise standing part, rotating part, calibration to determining mechanism, lifting and retaining mechanism, workpiece clamping mechanism.
Existing dividing head to determining mechanism, lift with locking mechanism structure heaviness, appearance and size large; Manually firmly excessive when workpiece clamping mechanism clamping, workpiece may be out of shape, firmly too small when clamping, adds man-hour workpiece and may drop again, very inconvenient while particularly clamping short workpieces.
Utility model content
In order to overcome existing dividing head heaviness, be difficult for clamping the shortcoming of short and small part, the utility model provides a kind of dividing head.
The technical solution adopted in the utility model:
A kind of dividing head, it is characterized in that: comprise support, described support is provided with spindle hole, rotating hollow shaft is installed in described spindle hole, in described hollow shaft, be provided with described hollow shaft concentric, circumferentially fixing, can axially movable collet axis, described collet axis is provided with described hollow shaft and makes the collet of pegging graft and coordinating near one end of workpiece, and described hollow shaft forms Workpiece clamping assembly together with described collet axis;
The primary importance of clamping work pieces when described Workpiece clamping assembly has described collet and moves to away from workpiece one end, and the described collet second place of unclamping workpiece while moving near workpiece one end;
Described support is provided with piston groove, and on described support, corresponding described piston groove is provided with piston gland, is provided with for driving the described axially movable piston of collet axis in described piston groove;
Calibration gear wheel for driving described Workpiece clamping assembly to rotate is installed on described Workpiece clamping assembly.
Described collet axis includes the elongated portion that exceeds described hollow shaft away from one end of workpiece, in described elongated portion, be installed with calibration conversion sleeve, described calibration gear wheel is fixedly mounted on the side of described calibration conversion sleeve away from workpiece, and described piston drives described calibration conversion sleeve to move axially by rolling bearing.
In described elongated portion, by screw thread, collet axis cap are installed, described calibration conversion sleeve is arranged on described collet axis cap by bolt.
Described hollow shaft, collet axis, calibration conversion sleeve is respectively equipped with a number key groove, two number key grooves, the three number key grooves of mutual correspondence, is provided with for circumferential fixing key in a described number key groove, two number key grooves, three number key grooves.
A described number key groove, the width of two number key grooves equate, the width of the number key groove described in the width of three described number key grooves is greater than, and described key adopts step key.
Described calibration gear wheel is driven by servomotor, and the pinion engaging with described calibration gear wheel is installed on the output shaft of described servomotor, and the diameter of described calibration gear wheel is less than 8 with the diameter ratio of described pinion.
Described hollow shaft is provided with bellmouth near one end of workpiece, and described collet is to make the three-jaw conial chuck of pegging graft and coordinating with described bellmouth.
The cone-apex angle of described bellmouth is 19 ~ 21 °, 1 ° of the cone-apex angle of the bellmouth described in the cone-apex angle of described three-jaw conial chuck in the time of free state is greater than.
In each claw of described three-jaw conial chuck, have and install along workpiece adjustable for height steel ball radially.
Between described spindle hole and described hollow shaft, be symmetrically installed with at least two thrust roller bearings.
The beneficial effects of the utility model are:
The utility model, air rammer and support are structure as a whole, and have reduced the size of dividing head along workpiece axial direction, and pneumatic three-jaw conial chuck is specially adapted to clamping of short workpieces.
Brief description of the drawings
Fig. 1 is the cutaway view of clamping work pieces state of the present utility model.
Fig. 2 is the cutaway view that unclamps work status of the present utility model.
Fig. 3 is the front view of support of the present utility model.
Fig. 4 is the cutaway view of air rammer of the present utility model.
Fig. 5 is the cutaway view of main shaft of the present utility model.
Fig. 6 is the cutaway view of collet axis of the present utility model.
Fig. 7 is the right view of calibration conversion sleeve of the present utility model.
Fig. 8 is the schematic diagram of step key of the present utility model.
Support 1, spindle hole 101, piston groove 102, the first air inlet 103, the second air inlet 104, main shaft 2, bellmouth 201, one number key groove 202, collet axis 3, three-jaw conial chuck, elongated portion 302, steel ball 303, two number key grooves 304, piston gland 4, air rammer 5, extension 501, bearing shoulder 502, jump-ring slot 503, workpiece locking breach 504, workpiece unclamps breach 505, collet axis cap 6, calibration conversion sleeve 7, three number key grooves 701, calibration gear wheel 8, deep groove ball bearing 9, step key 10, interior jump ring 11, thrust roller bearing 12, bearing cap 13, oil sealing 14.
Detailed description of the invention
Below in conjunction with the embodiment in accompanying drawing, the utility model is described in further detail.
In the utility model, as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, comprise support 1, described support 1 is provided with spindle hole 101, rotating hollow shaft 2 is installed in described spindle hole 101, in described hollow shaft 2, be provided with described hollow shaft 2 concentric, circumferentially fixing, can axially movable collet axis 3, described collet axis 3 is provided with described hollow shaft 2 and makes the collet 301 of pegging graft and coordinating near one end of workpiece, and described hollow shaft 2 forms Workpiece clamping assembly together with described collet axis 3; The primary importance of clamping work pieces when described Workpiece clamping assembly has described collet 301 and moves to away from workpiece one end, and described collet 301 second place of unclamping workpiece while moving near workpiece one end; Described support 1 is provided with piston groove 102, and on described support 1, corresponding described piston groove 102 is provided with piston gland 4, is provided with for driving the described axially movable piston 5 of collet axis 3 in described piston groove 102; Calibration gear wheel 8 for driving described Workpiece clamping assembly to rotate is installed on described Workpiece clamping assembly.
The present embodiment structure, air rammer 5 is structure as a whole with support 1, reduced the size of dividing head along workpiece axial direction, and pneumatic collet 301 is specially adapted to clamping of short workpieces.
In the utility model, as shown in Figure 3, Figure 4, described air rammer 5 is provided with workpiece locking breach 504 near one end of workpiece, described air rammer 5 is provided with workpiece near one end of described piston gland 4 and unclamps breach 505, and the outer wall of described support 1 is provided with the workpiece locking breach 504 described in being communicated with respectively, the first air inlet 103, the second air inlet 104 that workpiece unclamps breach 505. The present embodiment structure, the compact conformation of air rammer 5 and support 1, the axial dimension that has dwindled dividing head is thickness.
In the utility model, as shown in Figure 1, Figure 2, described collet axis 3 includes the elongated portion 302 that exceeds described hollow shaft 2 away from one end of workpiece, in described elongated portion 302, be installed with calibration conversion sleeve 7, described calibration gear wheel 8 is fixedly mounted on the side of described calibration conversion sleeve 7 away from workpiece, and described piston 5 drives described calibration conversion sleeve 7 to move axially by rolling bearing 9. The calibration gear wheel 8 of the present embodiment structure is bolted on calibration conversion sleeve 7, rotates together and moves axially, and has installation and maintenance special easily; Rolling bearing 9 is selected deep groove ball bearing, has simple in structurely, and little advantage circumferentially rubs.
In the utility model, as shown in Figure 1, Figure 2, Figure 4 shows, in described elongated portion 302, by screw thread, collet axis cap 6 are installed, described calibration conversion sleeve 7 is arranged on described collet axis cap 6 by bolt. The collet axis of the present embodiment cap 6 are fixed on extension 302 by internal thread, and calibration conversion sleeve 7 is arranged on collet axis cap 6 by four bolts, be threaded have advantages of be connected firmly, convenient disassembly.
In the utility model, as shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8, it is characterized in that: described hollow shaft 2, collet axis 3, calibration conversion sleeve 7 is respectively equipped with a number key groove 202, two number key grooves 304, the three number key grooves 701 of mutual correspondence, in a described number key groove 202, two number key grooves 304, three number key grooves 701, be provided with for circumferential fixing key 10; A described number key groove 202, the width of two number key grooves 304 equate, the width of the number key groove 202 described in the width of three described number key grooves 701 is greater than, and described key 10 adopts step key. The step key structure of the present embodiment, not only connects closely, and in the process of not stopping slippage, is difficult for departing from.
In the utility model, as shown in Figure 1 and Figure 2, described calibration gear wheel 8 is driven by servomotor, and the pinion engaging with described calibration gear wheel 8 is installed on the output shaft of described servomotor, and the diameter of described calibration gear wheel 8 is less than 8 with the diameter ratio of described pinion. The structure of the present embodiment, dividing head, except having calibration also function, also can be used as artifact-driven main shaft; Servomotor, as power set, has self-lock force, has saved calibration locking device, has further dwindled the profile of dividing head; Less gearratio also can ensure reliable and stable torque.
In the utility model, as shown in Figure 1 and Figure 2, described air rammer 5 is equipped with seal with described piston groove 102, the relative sliding face of piston gland 4. The present embodiment adopts O type circle as seal, have easy to process, assemble advantage efficiently.
In the utility model, as shown in Figure 5, Figure 6, described hollow shaft 2 is provided with bellmouth 201 near one end of workpiece, and described collet 301 is to make the three-jaw conial chuck of pegging graft and coordinating with described bellmouth 201; The cone-apex angle of described bellmouth 201 is 19 ~ 21 °, 1 ° of the cone-apex angle of the bellmouth 201 described in the cone-apex angle of described three-jaw conial chuck in the time of free state is greater than. Preferably 20 ° of the cone-apex angle α of the bellmouth 201 of the present embodiment, preferably 21 ° of the cone-apex angles in the time of free position of three-jaw conial chuck, this kind of adaptive cone-apex angle can ensure good clamping performance, is specially adapted to clamping of short workpieces.
In the utility model, as shown in Figure 6, in each claw of described three-jaw conial chuck, have and install along workpiece adjustable for height steel ball 303 radially. The extension elongation of the steel ball 303 in the present embodiment structure is 1/3 collet bore diameter preferably, and adjustable by screw thread within the specific limits, to be applicable to the workpiece of different size.
In the utility model, as shown in Figure 1 and Figure 2, between described spindle hole 101 and described main shaft 2, be symmetrically installed with at least two thrust roller bearings 12. One group of thrust roller bearing 12 of the present embodiment structure is that the shaft shoulder and bearing cap 13 on 2 is fixed in spindle hole 101 by spindle hole 101 and main shaft, has effectively reduced friction; Main shaft is provided with oil sealing 14 in the side near workpiece, can effectively prevent dust and prevent that the lubricating oil of thrust roller bearing 12 from leaking, and ensures the cleaning of three-jaw conial chuck.
Obviously, above-described embodiment of the present utility model is only used to illustrate the utility model example, and the not restriction to embodiment of the present utility model. For those of ordinary skill in the field, can also make on the basis of the above description other multi-form variation or variations. Here without also giving poor example to all embodiments. And these belong to apparent variation or the variation that connotation of the present utility model amplifies out and still belong to protection domain of the present utility model.

Claims (10)

1. a dividing head, it is characterized in that: comprise support (1), described support (1) is provided with spindle hole (101), in described spindle hole (101), rotating hollow shaft (2) is installed, in described hollow shaft (2), be provided with described hollow shaft (2) concentric, circumferentially fix, can axially movable collet axis (3), described collet axis (3) is provided with described hollow shaft (2) and makes the collet (301) of pegging graft and coordinating near one end of workpiece, described hollow shaft (2) forms Workpiece clamping assembly together with described collet axis (3),
The primary importance of clamping work pieces when described Workpiece clamping assembly has described collet (301) and moves to away from workpiece one end, and described collet (301) second place of unclamping workpiece while moving near workpiece one end;
Described support (1) is provided with piston groove (102), the upper corresponding described piston groove (102) of described support (1) is provided with piston gland (4), is provided with for driving the described axially movable piston of collet axis (3) (5) in described piston groove (102);
Calibration gear wheel (8) for driving described Workpiece clamping assembly to rotate is installed on described Workpiece clamping assembly.
2. a kind of dividing head according to claim 1, it is characterized in that: described collet axis (3) includes the elongated portion (302) that exceeds described hollow shaft (2) away from one end of workpiece, in described elongated portion (302), be installed with calibration conversion sleeve (7), described calibration gear wheel (8) is fixedly mounted on the side of described calibration conversion sleeve (7) away from workpiece, and described piston (5) drives described calibration conversion sleeve (7) to move axially by rolling bearing (9).
3. a kind of dividing head according to claim 2, is characterized in that: described elongated portion (302) is upper is provided with collet axis cap (6) by screw thread, and described calibration conversion sleeve (7) is arranged on described collet axis cap (6) by bolt.
4. a kind of dividing head according to claim 2, it is characterized in that: described hollow shaft (2), collet axis (3), calibration conversion sleeve (7) are respectively equipped with a number key groove (202) of mutual correspondence, two number key grooves (304), three number key grooves (701), in a described number key groove (202), two number key grooves (304), three number key grooves (701), be provided with for circumferential fixing key (10).
5. a kind of dividing head according to claim 4, it is characterized in that: a described number key groove (202), the width of two number key grooves (304) equate, the width of three described number key grooves (701) is greater than the width of a described number key groove (202), and described key (10) adopts step key.
6. a kind of dividing head according to claim 1, it is characterized in that: described calibration gear wheel (8) is driven by servomotor, the pinion engaging with described calibration gear wheel (8) is installed on the output shaft of described servomotor, and the diameter of described calibration gear wheel (8) is less than 8 with the diameter ratio of described pinion.
7. a kind of dividing head according to claim 1, it is characterized in that: described hollow shaft (2) is provided with bellmouth (201) near one end of workpiece, described collet (301) is to make the three-jaw conial chuck of pegging graft and coordinating with described bellmouth (201).
8. a kind of dividing head according to claim 7, is characterized in that: the cone-apex angle of described bellmouth (201) is 19 ~ 21 °, 1 ° of the cone-apex angle of the bellmouth (201) described in the cone-apex angle of described three-jaw conial chuck in the time of free state is greater than.
9. a kind of dividing head according to claim 7, is characterized in that: in each claw of described three-jaw conial chuck, have and install along workpiece adjustable for height steel ball (303) radially.
10. a kind of dividing head according to claim 1, is characterized in that: between described spindle hole (101) and described hollow shaft (2), be symmetrically installed with at least two thrust roller bearings (12).
CN201521067214.7U 2015-12-21 2015-12-21 Index head Expired - Fee Related CN205254687U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521067214.7U CN205254687U (en) 2015-12-21 2015-12-21 Index head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521067214.7U CN205254687U (en) 2015-12-21 2015-12-21 Index head

Publications (1)

Publication Number Publication Date
CN205254687U true CN205254687U (en) 2016-05-25

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ID=55996238

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201521067214.7U Expired - Fee Related CN205254687U (en) 2015-12-21 2015-12-21 Index head

Country Status (1)

Country Link
CN (1) CN205254687U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109571782A (en) * 2018-10-26 2019-04-05 广州市昊志机电股份有限公司 A kind of rotatable quick-clamping module of high-precision
CN114453930A (en) * 2022-04-07 2022-05-10 宁波佳比佳智能科技有限公司 Rotary clamping device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109571782A (en) * 2018-10-26 2019-04-05 广州市昊志机电股份有限公司 A kind of rotatable quick-clamping module of high-precision
CN114453930A (en) * 2022-04-07 2022-05-10 宁波佳比佳智能科技有限公司 Rotary clamping device

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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: 20160525