CN109773533A - Hydraulic gear - Google Patents
Hydraulic gear Download PDFInfo
- Publication number
- CN109773533A CN109773533A CN201811588084.XA CN201811588084A CN109773533A CN 109773533 A CN109773533 A CN 109773533A CN 201811588084 A CN201811588084 A CN 201811588084A CN 109773533 A CN109773533 A CN 109773533A
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- CN
- China
- Prior art keywords
- main shaft
- bearing
- knife
- pull rod
- hydraulic gear
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- 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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- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The invention discloses a kind of hydraulic gears, including cabinet, the interior lower section of the cabinet is provided with collar bush, rotation is provided with main shaft in collar bush, main shaft is hollow shaft, sliding setting broaching tool bar in main shaft, one end of broaching tool bar is connected with knife handle, the other end of broaching tool bar, which is equipped with, presses stick, it is provided with disc spring pad on pull rod knife, stick both ends is pressed and is stretched out from a pair of of sliding slot on main shaft respectively, presses and is provided with piston outside stick, piston is slidably arranged in collar bush, and the first oil inlet and the second oil inlet for pushing piston motion are provided with outside collar bush.Hydraulic gear can effectively drive the switching of machine tool using hydraulicdriven mode.
Description
Technical field
The invention belongs to machine tooling equipment technical fields, more particularly to a kind of hydraulic gear.
Background technique
With continuous development of the Numeric Control Technology in field of machining, more and more mechanical production devices are all continuous
Ground develops to high-precision, efficient, high speed, high-intelligentization field, while also to machine-tool spindle system, more stringent requirements are proposed.
The spindle unit of numerically-controlled machine tool is one of important component of numerically-controlled machine tool, and main includes the support and peace of main shaft
Driving parts on main shaft.Due to the fluid drive of main shaft, it is quasi- stop and automatic tool changer all influences the degree of automation of lathe,
So it is required that the axis system of CNC milling machine machining center has good rigidity, thermal stability, shock resistance and precision stability.
Summary of the invention
The object of the present invention is to provide a kind of hydraulic gears, to improve the rigidity of axis system, thermal stability, resist
Pinking and precision.
In order to achieve the above object, the technical scheme adopted by the invention is that, a kind of hydraulic gear, including main shaft
It covers, is provided with first bearing group and second bearing group, the inner ring of the first bearing group and second axis in the collar bush
The inner ring rotation for holding group is provided with main shaft, and the main shaft is hollow shaft, sliding setting broaching tool bar in main shaft, and the one of the pull rod knife
End is connected with knife handle, and the other end of broaching tool bar, which is equipped with, presses stick, and disc spring pad is provided in the middle part of pull rod knife, described to press stick two
End is stretched out from a pair of of sliding slot on main shaft respectively, is pressed and is provided with piston outside stick, and the piston is slidably arranged in collar bush,
The first oil inlet and the second oil inlet for pushing piston motion are provided with outside the collar bush；
Technical solution of the present invention also has the following characteristics that
The first bearing group includes row angular contact ball axis at a double row cylindrical roller bearing and 60 ° of corner connections
It holds.
The second bearing group includes a pair of of radial thrust bearing.
The pull rod knife is formed by connecting by the first pull rod knife and the second pull rod knife.
The side of the knife handle includes tapered surface, and one end of the main shaft is provided with the taper to match with the tapered surface
Hole.
It is provided with keyway on the knife handle, the key with keyway cooperation is provided in the main shaft.
The beneficial effects of the present invention are: design process automation can be achieved in (1), machining accuracy and quality are improved, shortens and produces
The product lead time；(2) structure is simple, control is easy, tool changing is reliable, general BT40 knife handle；(3) hydraulic system, Ke Yigai are used
The disengaging oil pocket for becoming oil cylinder, can satisfy the requirement of larger clamping force, realizes release and the pinching action of cutter.It is compact-sized,
It is sensitive, stable drive, automation easy to accomplish；(4) setting accuracy is high, meets high-precision processing request；(5) main shaft passes
System advantage: the bearing type and collocation form of main shaft selection is moved, the high revolving speed of main shaft is able to satisfy and bears biggish axial load
Lotus requires, and after main shaft temperature distortion, does not influence machining accuracy；(6) it is placed vertically when working, occupied space is few.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of hydraulic gear of the invention；
Fig. 2 is the structural schematic diagram in Fig. 1 between knife handle and pull rod knife.
In figure, 1. knife handles, 2. first glands, 3. collar bushes, 4. first bearing groups, 5. outer separators, 6. inner spacing collars, 7. second
Bearing group, 8. pistons, 9. second glands, 10. press stick, 11. positioning rings, 12. main shafts, 13. first spacers, 14. blind rivets, and 15.
Collet, 16. drawing bodies, 17. disc spring pads, 18. first pull rod knives, 19. second spacers, 20. locking nuts, 21. first oil inlets,
22. the second oil inlet, 23. second pull rod knives, 24. shaft couplings, 25. shaft coupling diaphragms, 26. rotary joints, 27. motors, 28. keys
Slot.
Specific embodiment
Technical solution of the present invention is described in further detail below in conjunction with Detailed description of the invention and specific embodiment.
As depicted in figs. 1 and 2, a kind of hydraulic gear of the invention, including collar bush 3 are provided in collar bush 3
Main shaft 12 is provided in one bearing group 4 and second bearing group 7, the inner ring of first bearing group 4 and the inner ring of second bearing group 7.It is main
Axis 12 is hollow shaft, i.e. the inside of main shaft 12 is hollow structure, and the shaft of external auxiliary motor 27 is connect with one end of main shaft 12,
It is rotated for driving spindle 12, sliding setting broaching tool bar in main shaft 12, pull rod knife is by the first pull rod knife 18 and the second pull rod knife 23
It is formed by connecting, the other end of broaching tool bar is connected with knife handle 1, and tool bore is provided in knife handle 1, and cutter is mountable in tool bore, pull rod
The Shanghai of knife is provided with disc spring pad 17 and presses stick 10, and a pair of of sliding slot is provided on main shaft 12, presses 10 both ends of stick respectively from master
This on axis 12 presses to stretching out in sliding slot and is provided with piston 8 outside stick 10, and piston 8 is slidably disposed in collar bush 3, main
Be provided with outside axle sleeve 3 and push sporting first oil inlet 21 of piston 8 and the second oil inlet 22, the first oil inlet 21 and second into
Hydraulic fluid port is located at the two sides of piston 8.
As shown in Figure 1, one end of the first pull rod knife 18, which is connected with, draws body 16, one end of knife handle 1 is provided with blind rivet 14, draws body
16 are linked together with blind rivet 14 by collet 15.
As illustrated in fig. 1, it is preferred that first bearing group 4 includes biserial at a double row cylindrical roller bearing and 60 ° of corner connections
Angular contact ball bearing；It is also preferable that second bearing group 7 includes a pair of of radial thrust bearing.
This preferred disposition of first bearing group 4 and second bearing group 7, can be such that the integral stiffness of main shaft 12 significantly mentions
Height meets the requirement of high-rate cutting.
As shown in Figure 1, outer separator 5 and inner spacing collar 6 can also be arranged between first bearing group 4 and second bearing group 7, it is interior every
Set 6 is located in outer separator 5, and one end of bearing holder (housing, cover) 3 is provided with the first gland 2, the outside of the first gland 2 and first bearing group 4 it
Between be provided with the first spacer 13, locking nut 20 is provided on main shaft 12, between locking nut 20 and the outside of second bearing group 7
It is provided with the second spacer 19, the other end of bearing holder (housing, cover) 3 is provided with the second gland 9, and the outside of piston 8 is provided with positioning ring 11.The
The pretightning force of two bearing groups 7 is compressed with locking nut 20 by the second spacer 19, locking by the self-locking realization of locking nut 20
The axial position of each bearing and main shaft 12, and pretightning force is generated to bearing, while passing through the adjustment of locking nut 20, make main shaft 12
Pre-stretching is generated, to improve the rigidity and thermal deformation of main shaft 12.Gap between first bearing group 4 and second bearing group 7 it is outer every
5, inner spacing collar 6 and the first spacer 13 are covered to adjust, to generate pretightning force.
As shown in Figure 1, one end of main shaft 12 is provided with shaft coupling 24, shaft coupling 24 passes through rotary joint 26 and motor 27
Shaft connection, specifically one end of rotary joint 26 is connect with 24 keyway of shaft coupling, the other end and motor of rotary joint 26
27 shaft thread connection.Shaft coupling 24 mainly ensures that the shaft passing movement of main shaft 12 and motor 27 is turned round together in the process,
Ensure that the two cannot come off under normal circumstances.
As shown in Figure 1, the side of shaft coupling 24 is connected with shaft coupling diaphragm 25, it can be achieved that gap without spin, so not by
Temperature and greasy dirt influence.
As shown in Fig. 2, the side of knife handle 1 includes tapered surface, one end of main shaft 12 is provided with the cone to match with tapered surface
On the one hand shape hole can ensure that knife handle 1 can smoothly enter into main shaft 12, on the other hand can ensure that knife handle 1 is clamped in by main shaft 12
In it.
As shown in Fig. 2, being provided with keyway 28 on knife handle 1, key is provided in main shaft 12.In order to realize automatic tool changer, make machine
Cutter is accurately packed into main shaft 12 by tool hand, and the keyway 28 on knife handle 1 must be directed at insertion with the key of main shaft 12.
As shown in Fig. 2, pressure oil enters from the second oil inlet 22, and piston 8 is hydraulic at this time when cutter needs will clamp
It is moved to right under the action of oil, presses stick 10 and also move to right therewith, and then by driving broaching tool bar, broaching tool bar passes through collet 15 for knife at this time
Handle 1 pulls in the interior of main shaft 12, and the inner conical surface of the tapered surface of knife handle 1 and the bellmouth of main shaft 12 is made to mutually compress and be fitted close,
Knife handle 1 is clamped on main shaft 12 by positioning, so that it is guaranteed that cutter during machine cut in knife handle 1 will not be from main shaft 12
It falls down.
As shown in Figure 1, when change need loosening cutter when, pressure oil enters from the first oil inlet 21, push piston 8 make broaching tool
Bar moves to left, and draws body 16 to move to left with broaching tool bar at the larger aperture of main shaft 12 at this time, and broaching tool bar can push collet 23, folder
First 23 will unclamp the blind rivet 14 on knife handle 1, and the front end of knife handle 1 be ejected main shaft 12, and then can will be in knife handle 1 with manipulator
Pulling-out of cutter, carry out replacement or other operations.
Therefore hydraulic gear of the invention has the advantage that design process automation can be achieved in (1), improves processing
Precision and quality shortens product development cycle；(2) structure is simple, control is easy, tool changing is reliable, general BT40 knife handle；(3) it adopts
With hydraulic system, thus it is possible to vary the disengaging oil pocket of oil cylinder can satisfy the requirement of larger clamping force, realize release and the folder of cutter
Tight movement.It is compact-sized, sensitive, stable drive, automation easy to accomplish；(4) setting accuracy is high, meets high-precision and adds
Work requirement；(5) main axis transmission system advantage: the main shaft selection bearing type and collocation form, be able to satisfy the high revolving speed of main shaft and
Biggish axial load requirement is born, after main shaft temperature distortion, does not influence machining accuracy；(6) it places, occupies empty vertically when working
Between it is few.
Claims (6)
1. a kind of hydraulic gear, which is characterized in that including collar bush (3)；First bearing is provided in the collar bush (3)
The inner ring of group (4) and second bearing group (7), first bearing group (4) and second bearing group (7) is provided with main shaft (12), the master
Axis (12) is hollow shaft, and one end of main shaft (12) is driven by motor (27), and the motor (27) is fixed on the cabinet (28)
Side-lower, sliding setting broaching tool bar, one end of the pull rod knife are connected with knife handle (1) in main shaft (12), broaching tool bar it is another
End, which is equipped with, to be pressed stick (10), is provided in the middle part of pull rod knife disc spring pad (17), described stick (10) both ends that press are respectively from main shaft
(12) it is stretched out in a pair of of sliding slot on, presses and be provided with piston (8) outside stick (10), the piston (8) is slidably arranged in collar bush
(3) in, the first oil inlet (21) and the second oil inlet (22) for pushing piston (8) movement are provided with outside the collar bush (3)；.
2. hydraulic gear according to claim 1, which is characterized in that the first bearing group (4) includes one double
Double-row angular contact ball bearing at column cylindrical roller bearing and 60 ° of corner connections.
3. hydraulic gear according to claim 3, which is characterized in that the second bearing group (7) includes one opposite
Heart thrust bearing.
4. hydraulic gear according to claim 1, which is characterized in that the pull rod knife by the first pull rod knife (18) and
Second pull rod knife (23) is formed by connecting.
5. hydraulic gear according to claim 1, which is characterized in that the side of the knife handle (1) includes tapered surface,
One end of the main shaft (12) is provided with the bellmouth to match with the tapered surface.
6. hydraulic gear according to claim 1, which is characterized in that the side of the knife handle (1) is provided with keyway
(28), the key with the keyway (28) cooperation is provided in the main shaft (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811588084.XA CN109773533A (en) | 2018-12-25 | 2018-12-25 | Hydraulic gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811588084.XA CN109773533A (en) | 2018-12-25 | 2018-12-25 | Hydraulic gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109773533A true CN109773533A (en) | 2019-05-21 |
Family
ID=66498186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811588084.XA Pending CN109773533A (en) | 2018-12-25 | 2018-12-25 | Hydraulic gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109773533A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH547682A (en) * | 1970-12-26 | 1974-04-11 | Seiko Seiki Kk | MACHINE-TOOL SPINDLE. |
| CN204711245U (en) * | 2015-06-17 | 2015-10-21 | 江苏新瑞重工科技有限公司 | For the turning handle of a knife of milling spindle |
| CN205363382U (en) * | 2016-01-21 | 2016-07-06 | 邝锦富 | Realize accurate resetting structure of handle of a knife and main shaft corner through elasticity key |
| CN205519685U (en) * | 2016-01-21 | 2016-08-31 | 邝锦富 | Mill compound main shaft of integration at car combined machining center |
| CN206455183U (en) * | 2017-01-12 | 2017-09-01 | 御成工业有限公司 | Main axle structure |
| CN208262383U (en) * | 2018-04-16 | 2018-12-21 | 陕西阿米工业设计有限公司 | A kind of vertical machining centre integral type main shaft device |
-
2018
- 2018-12-25 CN CN201811588084.XA patent/CN109773533A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH547682A (en) * | 1970-12-26 | 1974-04-11 | Seiko Seiki Kk | MACHINE-TOOL SPINDLE. |
| CN204711245U (en) * | 2015-06-17 | 2015-10-21 | 江苏新瑞重工科技有限公司 | For the turning handle of a knife of milling spindle |
| CN205363382U (en) * | 2016-01-21 | 2016-07-06 | 邝锦富 | Realize accurate resetting structure of handle of a knife and main shaft corner through elasticity key |
| CN205519685U (en) * | 2016-01-21 | 2016-08-31 | 邝锦富 | Mill compound main shaft of integration at car combined machining center |
| CN206455183U (en) * | 2017-01-12 | 2017-09-01 | 御成工业有限公司 | Main axle structure |
| CN208262383U (en) * | 2018-04-16 | 2018-12-21 | 陕西阿米工业设计有限公司 | A kind of vertical machining centre integral type main shaft device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190521 |
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| RJ01 | Rejection of invention patent application after publication |