A kind of electronic centre frame of bent axle
Technical field
The invention belongs to the technical field of machine cut processing tool, specifically, relate to a kind of bent axle electronic
Centre frame.
Background technology
Bent axle is the main rotary gadget of engine, after loading onto connecting rod, can accept the reciprocating motion of connecting rod and become and follow
Ring rotary motion, is the important accurate parts of on electromotor.Size axle to bent axle on lathe
Head and the spindle hole course of processing need to be supported crankshaft two end and centralized positioning, this current lathe
Fixture there is problems in that this turning attachment is purely manual fixture, and operating procedure is many, wastes time and energy;This car
Bed clamp central positioning performance is poor, it is difficult to meet the high accuracy processing request of bent axle.
Summary of the invention
For deficiency above-mentioned in prior art, the present invention provides a kind of and is swift in motion and song that operation precision is high
The electronic centre frame of axle.
In order to achieve the above object, the solution that the present invention uses is: a kind of electronic centre frame of bent axle, bag
Including pedestal, pedestal is provided with power transmission shaft one, power transmission shaft two and power transmission shaft three, power transmission shaft one is positioned on pedestal
End, power transmission shaft two and power transmission shaft three be symmetricly set in the lower section of power transmission shaft one, power transmission shaft one and power transmission shaft two it
Between pedestal on be provided with the open slot for placing bent axle.Power transmission shaft one is fixedly connected with on power transmission shaft two
Driven rack sleeve, driven rack sleeve is provided with driven tooth-strip part.One end of power transmission shaft three is provided with electricity
Machine, the other end of power transmission shaft three is provided with actively rack sleeve, power transmission shaft three is provided with screw-driven portion,
Actively being provided with screw-driven hole in rack sleeve, screw-driven portion is arranged in screw-driven hole, driving tooth
It is symmetrically arranged with a pair actively tooth-strip part on bar sleeve, is actively provided with tooth between tooth-strip part and driven tooth-strip part
Wheel transmission.Actively tooth bar sleeve ends and driven tooth bar sleeve ends are fixedly connected with bearing fixed seat, axle
Hold the location bearing being provided with location main bearing journal on fixing seat.
Further, gear driving pair includes intermeshing driving gear and driven gear, driving gear with
Actively tooth-strip part engagement, driven gear engages with driven tooth-strip part.
Further, also including shaft coupling, the output shaft of power transmission shaft three and motor is coaxially fixed by shaft coupling
Connect.
Further, power transmission shaft three being provided with bracing frame, bracing frame is fixing with pedestal to be connected, motor with prop up
Support is fixing to be connected;Being provided with thrust bearing between bracing frame and power transmission shaft three, thrust bearing is fixedly connected on
On bracing frame, power transmission shaft three is fixedly connected with the locking nut for fastening thrust bearing.
Further, power transmission shaft one and power transmission shaft two are provided with guide piston and clamp nut, guide piston
It is fastenedly connected between driven rack sleeve and clamp nut;2 groups of pilot holes one it are provided with on described pedestal,
Driven rack sleeve, guide piston, clamp nut are arranged in pilot hole one;Also set up on described pedestal
There is pilot hole two, in actively rack sleeve is arranged on pilot hole two.
Further, power transmission shaft one, power transmission shaft two and power transmission shaft three three are mutually in 120 ° of annular spread.
The invention has the beneficial effects as follows, electric machine rotation drives power transmission shaft three to rotate, and screw-driven portion and screw thread pass
Relatively rotating of dynamic hole transfers actively rack sleeve stretching in pilot hole two to, and actively tooth-strip part passes through gear
Transmission is by power transmission to driven rack sleeve, thus reaches three locating shafts and honour the size spindle nose of bent axle
Clamping and decontrol, three location bearings synchronize to stretch with station, and locating speed is fast, and positioning precision is high,
Thus replace traditional manual clamping, improve work efficiency and machining accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the electronic centre frame of bent axle of the present invention.
Fig. 2 is the enlarged drawing in Fig. 1 at A.
In accompanying drawing:
10, pedestal;11, open slot;12, pilot hole one;13, pilot hole two;21, power transmission shaft
One;22, power transmission shaft two;23, driven rack sleeve;231, driven tooth-strip part;24, guide
Piston;25, clamp nut;31, power transmission shaft three;311, screw-driven portion;32, motor;
33, actively rack sleeve;331, screw-driven hole;332, actively tooth-strip part;34, shaft coupling;
35, bracing frame;36, thrust bearing;37, locking nut;40, gear driving pair;41、
Driving gear;42, driven gear;51, bearing fixed seat;52, location bearing.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
Seeing figures.1.and.2, the present invention provides a kind of electronic centre frame of bent axle, including pedestal 10, pedestal 10
On be provided with power transmission shaft 1, power transmission shaft 2 22 and power transmission shaft 3 31, power transmission shaft 1, power transmission shaft two
22 with power transmission shaft 3 31 three mutually in 120 ° of annular spread so that stability under loading, clamping are reliable.Power transmission shaft
One 21 are positioned at pedestal 10 upper end, power transmission shaft 2 22 and power transmission shaft 3 31 is symmetricly set in power transmission shaft 1
Lower section, the pedestal 10 between power transmission shaft 1 and power transmission shaft 2 22 is provided with for placing opening of bent axle
Mouth groove 11.It is fixedly connected with driven rack sleeve 23, driven tooth on power transmission shaft 1 and power transmission shaft 2 22
Driven tooth-strip part 231 it is provided with on bar sleeve 23.It is provided with guiding on power transmission shaft 1 and power transmission shaft 2 22
Piston 24 and clamp nut 25, guide piston 24 is fastenedly connected at driven rack sleeve 23 and clamp nut
Between 25;Being provided with 2 groups of pilot holes 1 on described pedestal 10, driven rack sleeve 23, guiding are lived
Plug 24, clamp nut 25 are arranged in pilot hole 1, and driven rack sleeve 23 is entered by pilot hole 1
Row guides, and prevents driven rack sleeve 23 from offseting.
One end of power transmission shaft 3 31 is provided with motor 32, and power transmission shaft 3 31 passes through with the output shaft of motor 32
Shaft coupling 34 is fixedly and coaxially connected.Bracing frame 35, bracing frame 35 and pedestal it is provided with on power transmission shaft 3 31
10 fixing connections, motor 32 is fixing with bracing frame 35 to be connected;Set between bracing frame 35 and power transmission shaft 3 31
Being equipped with thrust bearing 36, thrust bearing 36 is fixedly connected on bracing frame 35, fixing on power transmission shaft 3 31
Connecting and have the locking nut 37 for fastening thrust bearing 36, thrust bearing 36 ensure that power transmission shaft 3 31
Stable rotation and prevent power transmission shaft 3 31 occur axial transmission.
The other end of power transmission shaft 3 31 is provided with actively rack sleeve 33, and pedestal 10 is additionally provided with pilot hole
2 13, in actively rack sleeve 33 is arranged on pilot hole 2 13.Actively rack sleeve 33 end and driven
Rack sleeve 23 end is fixedly connected with bearing fixed seat 51, and bearing fixed seat 51 is provided with location bent axle
The location bearing 52 of trunnion.Location bearing 52 can produce radial compression location to main bearing journal, and
Location bearing 52 can rotate, it is to avoid main bearing journal collides with in position fixing process and causes damage.
It is provided with screw-driven portion 311 on power transmission shaft 3 31, is actively provided with screw thread in rack sleeve 33 and passes
Dynamic hole 331, screw-driven portion 311 is arranged in screw-driven hole 331, actively symmetrical on rack sleeve 33
It is provided with a pair actively tooth-strip part 332, is actively provided with tooth between tooth-strip part 332 and driven tooth-strip part 231
Wheel transmission 40.Gear driving pair 40 includes intermeshing driving gear 41 and driven gear 42, main
Moving gear 41 engages with actively tooth-strip part 332, and driven gear 42 engages with driven tooth-strip part 231.Motor
32 rotate relatively rotating of drive power transmission shaft 3 31 rotation, screw-driven portion 311 and screw-driven hole 331
Transferring actively rack sleeve 33 stretching in pilot hole 2 13 to, actively tooth-strip part 332 passes through gear drive
Secondary 40 by power transmission to driven rack sleeve 23, thus reaches three location bearings 52 size to bent axle
Spindle nose clamps and decontrols, and three location bearings 52 synchronize same station and stretch, and locating speed is fast, positioning accurate
Degree height, thus replaces traditional manual clamping, improves work efficiency and machining accuracy.