A kind of numerical control multi-station unit head
Technical field
The invention mainly relates to numerical control machine tool technique field, specifically a kind of numerical control multi-station unit head.
Background technology
With the development and the raising of productivity of science and technology, current lathe can typically be performed many by exchanging cutter automatically
Plant processing.There is a main shaft, main shaft rotates under the driving of spindle motor on lathe, cutter is arranged on main shaft by tool rest
On, rise together with main shaft, decline i.e. rotation, so as to be processed to workpiece.
Lathe typically has automatic tool changer, and automatic tool changer has tool magazine and tool changing arm, and tool magazine has many
Broach shell, broach shell keeps cutter, along defined path loopy moving, and broach shell in tool magazine interior circulation by moving cutter positioning
On ready position, then the tool changing device to outside tool magazine is sent out.In machine industry, multi-station carriage can realize tool changing, but
It is that cutter is not self-powered, and the unit head of lathe can only drive a cutter, therefore, traditional cutter frame structure causes tool changing
Process is extremely complex, it is impossible to realize tool changing rapidly and efficiently, influences processing efficiency.
The content of the invention
For the deficiency of the current technology of solution, present invention combination prior art, from practical application, there is provided a kind of numerical control is many
By numerical control rotating platform indexing selection power source Multi-position power head can be achieved so that lathe can be fast in station unit head, the present invention
Speed is efficiently changed with dynamic cutter, substantially increases the processing efficiency of lathe.
To achieve the above object, technical scheme is as follows:
A kind of numerical control multi-station unit head, including numerical control rotating platform, the numerical control rotating platform are screwed in lathe slide plate
On, the numerical control rotating platform is provided with input shaft and output shaft, defeated by Worm Wheel System between the input shaft and output shaft
Enter axle to be mutually perpendicular to output shaft, in addition to servomotor, the drive shaft of the servomotor connects number by flexible clutch
The input shaft of turntable is controlled, the installment work rotating disk on the output shaft of numerical control rotating platform, the working rotary table is main provided with several electricity
Axle, several described electro spindles are fixed on working rotary table by clip, and the electro spindle is provided with cutter chuck, the cutter
Chuck is provided with milling cutter, and power switching box is fixed with the center of working rotary table, and power switching box can turn with work
Disk is rotated, and the electro spindle power line of several electro spindles is introduced between in the power switching box, the output of numerical control rotating platform
Threading axle is provided with axle, is connected between the threading axle and output shaft by bearing, outer ring and the output shaft of its middle (center) bearing coordinate,
The inner ring of bearing coordinates with threading axle, and the threading axle is hollow shaft, and the end of threading axle is arranged in power switching box, come from
The main power line of electrical control cabinet is pivotally connected in power switching box through threading, is fixed in power switching box provided with main power line
Frame and electro spindle power line fixed mount, the main power line fixed mount include upper supporting plate, lower carrier plate and the first spring, the upper branch
Plate and lower carrier plate are to be respectively provided with threading hole on circular and upper supporting plate and lower carrier plate, and lower carrier plate is fixed on threading axle, upper supporting plate
It is arranged on above lower carrier plate, the first spring is arranged between upper supporting plate and lower carrier plate, and main power line terminal is fixed on upper supporting plate,
Main power line is connected to main power line terminal, the electro spindle power line fixed mount through the threading hole on upper supporting plate and lower carrier plate
Including several terminal plates, the terminal plate is fixed on power switching box inwall and corresponding with electro spindle, terminal plate setting
Above upper supporting plate, electro spindle power line terminal is fixedly mounted in terminal plate bottom surface, and threading hole is set on power switching box, and electricity is main
Axle power line is connected to electro spindle power line terminal through threading hole, when electro spindle power line terminal with working rotary table turns to master
When directly over power line terminal, electro spindle power line terminal is connected after being fitted with main power line terminal;On the numerical control rotating platform also
Provided with electromagnetic locking device, the electromagnetic locking device is used to lock numerical control rotating platform and working rotary table, and electromagnetic locking device includes
Bearing, electromagnet, chute, traveller, second spring and cover plate, the bearing are fixed on numerical control rotating platform, and the chute is arranged on
On bearing, opening is set, the traveller is arranged in chute and coordinated with slide, and traveller is T-type structure, institute above chute
State second spring to be enclosed on outside traveller, the cover plate, which is arranged at the opening of chute, to be used to prevent second spring from chute deviating from,
The electromagnet is arranged on traveller and is fixedly connected with traveller, is inhaled when the solenoid is energized after generation magnetic force with working rotary table
Close, when electromagnet is powered off, magnetic force disappears, electromagnet departs from the presence of second spring with working rotary table, is also set on bearing
Have and slidable lead is provided with guide groove, guide groove, lead is connected through a screw thread electromagnet.
The electro spindle is 4, and angle is 90 degree between each electro spindle.
Several guide pads are additionally provided with the upper supporting plate, the guide pad is uniformly fixed on upper supporting plate circumference, is oriented to
The height of block is more than main power line terminal, and guide pad is triangle, the direction phase that the incline direction on its inclined-plane is rotated with terminal plate
Correspondence, the terminal plate is provided with the holding tank being engaged with guide pad, when guide pad is located in holding tank, electro spindle power supply
Line terminals are fitted with main power line terminal, and now terminal plate is rotated, and upper supporting plate is pressed down rear guide pad and deviate from holding tank, electricity
Gap disengaging is produced between main shaft power line terminal and main power line terminal to fit.
Beneficial effects of the present invention:
1st, numerical control rotating platform of the invention can realize indexing function by servomotor, due to being provided with multiple on working rotary table
Cutter is equipped with electro spindle, each electro spindle, therefore any cutter is selected after servomotor driving working rotary table rotation, and
Cutter is self-powered, therefore when lathe tool changing, only needs working rotary table to complete whole exchanging knives process after turning an angle,
Its is simple in construction, tool changing efficiency high, can increase substantially production efficiency, increase productivity.
2nd, the power supply change-over device that the present invention is used, is powered in time when each electro spindle is rotate in place, remaining electro spindle
Power-off, realizes Multi-position power head, and each electro spindle rotates the energization for not interfering with main power line, and its is simple in construction, operation
It is reliable and stable.
3rd, the present invention devises electromagnetic locking to prevent the problem of effect of jitter machining accuracy occurs in cutter in process
Device so that during Tool in Milling, the absorption that working rotary table can be firm improves the processing effect of cutter in numerical control rotating platform
Rate.
Brief description of the drawings
Accompanying drawing 1 is general structure schematic diagram of the present invention;
Accompanying drawing 2 is Power convert mode structural representation of the present invention;
Accompanying drawing 3 is electro spindle transposition structure schematic diagram of the present invention;
Accompanying drawing 4 is electromagnetic locking device structural representation of the present invention;
Accompanying drawing 5 is I schematic enlarged-scale view in accompanying drawing 4.
Label shown in accompanying drawing:1st, servomotor;2nd, input shaft;3rd, numerical control rotating platform;4th, output shaft;5th, electromagnetic locking is filled
Put;6th, electro spindle;7th, electro spindle power line;8th, power switching box;9th, clip;10th, working rotary table;11st, cutter chuck;12nd, wear
String holes;13rd, main power line terminal;14th, main power line;15th, electro spindle power line terminal;16th, terminal plate;17th, holding tank;18、
Guide pad;19th, upper supporting plate;20th, the first spring;21st, lower carrier plate;22nd, threading axle;23rd, bearing;24th, electromagnet;25th, lead;
26th, guide groove;27th, bearing;28th, chute;29th, second spring;30th, cover plate;31st, traveller.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the invention will be further described.It should be understood that these embodiments are only used for
Illustrate the present invention rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, this
Art personnel can make various changes or modifications to the present invention, and these equivalent form of values equally fall within right appended by the application will
Seek book limited range.
As shown in accompanying drawing 1~5, a kind of numerical control multi-station unit head, including numerical control rotating platform 3, the numerical control rotating platform 3 passes through spiral shell
Silk is fixed on lathe slide plate, and the numerical control rotating platform 3 is provided with input shaft 2 and output shaft 4, the input shaft 2 and output shaft 4 it
Between be mutually perpendicular to by Worm Wheel System, input shaft 2 with output shaft 4, in addition to servomotor 1, the drive of the servomotor 1
Moving axis connects the input shaft 2 of numerical control rotating platform 3, the installment work rotating disk on the output shaft 4 of numerical control rotating platform 3 by flexible clutch
10, the working rotary table 10 is provided with several electro spindles 6, and several described electro spindles 6 are fixed on working rotary table by clip 9
On 10, the electro spindle 6 is provided with cutter chuck 11, and the cutter chuck 11 is provided with milling cutter, in working rotary table 10
Center is fixed with power switching box 8, and power switching box 8 can be rotated with working rotary table 10, the electricity of several electro spindles 6
Main shaft power line 7 is introduced between in the power switching box 8, and threading axle 22 is provided with the output shaft 4 of numerical control rotating platform 3, described to wear
Connected between bobbin 22 and output shaft 4 by bearing 23, outer ring and the output shaft 4 of its middle (center) bearing 23 coordinate, the inner ring of bearing 23
Coordinate with threading axle 22, the threading axle 22 is hollow shaft, and the end of threading axle 22 is arranged in power switching box 8, from electricity
The main power line 14 of switch board is connected in power switching box 8 through threading axle 22, and main power line is provided with power switching box 8
Fixed mount and electro spindle power line fixed mount, the main power line fixed mount include upper supporting plate 19, the spring of lower carrier plate 21 and first
20, the upper supporting plate 19 and lower carrier plate 21 are to be respectively provided with threading hole 12, lower carrier plate on circular and upper supporting plate 19 and lower carrier plate 21
21 are fixed on threading axle 22, and upper supporting plate 19 is arranged on the top of lower carrier plate 21, and the first spring 20 is arranged on upper supporting plate 19 and lower branch
Between plate 21, main power line terminal 13 is fixed on upper supporting plate 19, main power line 14 is passed through on upper supporting plate 19 and lower carrier plate 21
Threading hole 12 is connected to main power line terminal 13, and the electro spindle power line fixed mount includes several terminal plates 16, described to connect
Line plate 16 is fixed on the inwall of power switching box 8 and corresponding with electro spindle 6, and terminal plate 16 is arranged on the top of upper supporting plate 19, connects
Electro spindle power line terminal 15 is fixedly mounted in the bottom surface of line plate 16, and threading hole 12, electro spindle power line are set on power switching box 8
7 are connected to electro spindle power line terminal 15 through threading hole 12, when electro spindle power line terminal 15 is turned to working rotary table 10
During main power line 13 surface of terminal, electro spindle power line terminal 15 is connected after being fitted with main power line terminal 13;The numerical control
Electromagnetic locking device 5 is additionally provided with turntable 3, the electromagnetic locking device 5 is used to lock numerical control rotating platform 3 and working rotary table 10, electricity
Magnetic locking device 5 includes bearing 27, electromagnet 24, chute 28, traveller 31, second spring 29 and cover plate 30, and the bearing 27 is consolidated
It is scheduled on numerical control rotating platform 3, the chute 28 is arranged on bearing 27, the top of chute 28 sets opening, and the traveller 31 is arranged on
It is slidably matched in chute 28 and with chute 28, traveller 31 is T-type structure, the second spring 29 is enclosed on outside traveller 31, the lid
Plate 30, which is arranged at the opening of chute 28, to be used to prevent second spring 29 from chute 28 deviating from, and the electromagnet 24 is arranged on cunning
Be fixedly connected on post 31 and with traveller 31, when electromagnet 24 is powered produce magnetic force after with the adhesive of working rotary table 10, work as electromagnet
Magnetic force disappears during 24 power-off, and electromagnet 24 departs from working rotary table 10 in the presence of second spring 29, also set on bearing 27
Have and slidable lead 25 is provided with guide groove 26, guide groove 26, lead 25 is connected through a screw thread electromagnet 24.
As shown in Figure 1, the drive shaft of servomotor 1 is connected with the input shaft 2 of numerical control rotating platform 3 in the present invention, servo electricity
The torsion of machine 1 is spread out of by the output shaft 4 of numerical control rotating platform 3, and working rotary table 10 is arranged on output shaft 4, with 4 turns of output shaft
Dynamic, the vertical rotary of servomotor 1 is become work by the rotating device that servomotor 1, numerical control rotating platform 3, working rotary table 10 are constituted
The horizontal direction of rotating disk 10 rotates, and servomotor 1 drives working rotary table 10 to realize indexing.
Four orthogonal electro spindles 6 can be at least installed, as shown in Figure 3, milling cutter leads on working rotary table 10
Cross cutter chuck 11 to be fixed on electro spindle 6, electro spindle 6 is fixed on working rotary table 10 by clip 9, the electricity of four electro spindles 6
Main shaft power line 7 is introduced between in power switching box 8, and main power line 14 is also introduced into power switching box 8, in Power convert
The connection of selected electro spindle 6 with main power source is completed in box 8, and unselected electro spindle power line 7 is vacant.The original of Power convert
Reason as shown in Figure 2, drives power switching box 8 and electro spindle 6 to rotate, be connected energization with electro spindle 6 when working rotary table 10 is rotated
Main shaft power line terminal 15 is equally rotated with power switching box 8, and main power line terminal 13 is fixed on threading axle 22 by support,
Threading axle is that fixing axle does not rotate, therefore the position of main source terminal 13 will not change, when electro spindle power line terminal
15 when moving to 13 surface of main source terminal, and electro spindle power line terminal 15 and main source terminal 13 can fit conduction, make it
The corresponding energization work of electro spindle 6, and other electro spindles 6 are in off-position, in order to ensure the He of electro spindle power line terminal 15
Main source terminal 13 can closely be fitted, and elastic construction is provided with below main source terminal 13, enables main source terminal 13
It is enough to have the trend moved upwards under the active force of the first spring 20, can closely it be pasted with electro spindle power line terminal 15
Close, in order to ensure, when electro spindle 6 replaces, not interfere with main source terminal 13, the present invention devises guide pad 18 and holding tank
17 structure, because guide pad 18 is triangle, it has inclined-plane, therefore when terminal plate 16 is rotated, can be easily by oblique
Guide pad 18 is pushed at face, the first spring 20 is compressed, the related upper supporting plate 19 of guide pad 18 is moved downward, until guide pad 18 is de-
From holding tank 17, now because upper supporting plate 19 is moved down, therefore between electro spindle power line terminal and main source terminal 13
Certain gap can be produced, so that avoid main source terminal 13 produces interference on the movement locus of terminal plate 16.
Because numerical control rotating platform 3 is the drive structure of gear worm that uses, therefore have when Tool in Milling a slight shake,
Therefore the present invention devises electromagnetic locking device 5, as shown in accompanying drawing 4,5, it is provided with necessarily between numerical control rotating platform 3 and working rotary table 10
Gap, electromagnetic locking device 5 is fixed on numerical control rotating platform 3, when the electromagnet 24 in electromagnetic locking device 5 is powered, electromagnet
24 produce magnetic force, and the magnetic force is actively adsorbed onto on working rotary table after overcoming the pulling force of second spring 29, now the quilt of working rotary table 10
It is fixed on numerical control rotating platform 3, in order to more further improve the stability of the present invention in the course of the work, is set below electromagnet 24
Put lead 25 and guide groove 26, electromagnet 24 is carried out further it is spacing, the structure ensure that when electromagnet 24 is powered
When can working rotary table 10 can be firm be fixed on numerical control rotating platform 3, it is to avoid occur jitter phenomenon during Tool in Cutting, improve machine
The processing efficiency of bed, when electromagnet 24 is powered off, the magnetic force of electromagnet 24 disappears, now pulling force of the electromagnet 24 in second spring 29
Under move downward after there is gap between working rotary table 10, so when working rotary table 10 it is free to rotate.