A kind of adjustable eccentric chuck
Technical field
The invention belongs to turning attachment field, relate in particular to a kind of adjustable eccentric chuck.
Background technology
In machine driving, gyration to be made is changed into linear motion, or linear motion turns
Become gyration, typically use crank block (connecting rod) mechanism to realize, in actual production
In common eccentric shaft, crank etc. be exactly example of its concrete application.Cylindrical and the axis of cylindrical
Or cylindrical is parallel with the axis of endoporus and the workpiece of do not coincide (offsetting with one another certain distance),
It is eccentric work piece.As it is shown in figure 1, the workpiece of cylindrical and excircle eccentricity is eccentric shaft, two is parallel
Distance between line is eccentric distance e;As in figure 2 it is shown, endoporus and the workpiece of excircle eccentricity are eccentric
Set, the distance between two parallel lines is eccentric distance e.
Eccentric shaft, eccentric bushing are the most all processed on engine lathe.The basic phase of its process principle
With, all it is intended to take suitable installation method, it would be desirable to the axis correction of processing off-centre operation part
To with the position of lathe spindle dead in line after, then driving cut.In order to ensure the work of eccentric element
Make precision.When turning eccentric work piece, to pay special attention to control the depth of parallelism and the eccentric throw of between centers
Precision.
And the device of processing eccentric part common (on engine lathe) in prior art is: i.e.
Get on the bus eccentric work piece at scroll chuck, get on the bus eccentric work piece at chuck, at two top cars
Eccentric work piece, gets on the bus eccentric work piece at eccentric chuck, gets on the bus eccentric work piece at special fixture.
Although said apparatus well solve processing eccentric part problem, but be as science and technology and
The raising day by day of living standard, people are more and more higher to the requirement of living facilities, therefore, as
What accomplishes time saving and energy saving, accomplishes high accuracy, meets the requirement of buyer, it is ensured that high-quality becomes one
Technical barrier.
It addition, factory needs the part produced more and more diversified, such as, in addition it is also necessary to utilize
Some square eccentric work pieces processed by engine lathe.
Further, the workman in factory during clamping workpiece, dredges because of work on lathe chuck sometimes
Neglect, forget to take off regulation handle, thus as easy as rolling off a log cause production safety major accident.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of adjustable eccentric chuck, existing to overcome
In technology adjustable eccentric chuck exist processing eccentric part precision the highest, processing in-convenience in use lack
Fall into.
For reaching above-mentioned purpose, the present invention provides a kind of adjustable eccentric chuck, including being fixed on car
Bed the transition disc of spindle coupling disc, gap adjusting mechanism, eccentricity regulating mechanism, take-up housing,
Two pairs of clamping screws, screw, chuck body, claw, jaw adjustment hole, measurements support and a pair
Measure block;Described transition disc is provided with the first T-slot, dovetail groove, the second T-slot;
Described take-up housing top connects described chuck body, the swallow of described take-up housing bottom by described screw
Tail guide rail cooperates with described dovetail groove, and the T-shaped termination of every pair of clamping screw lays respectively at institute
Stating in the first T-slot and the second T-slot, the connection end of clamping screw is respectively and fixedly connected with described cunning
The connecting hole of block;Described eccentricity regulating mechanism includes nut seat, and at described nut seat
Upper screw mandrel for linear motion;Described nut seat is fixed on described dovetail groove, described screw mandrel
One end is connected in described dovetail guide;In joining of described dovetail guide and described dovetail groove side
Being provided with described gap adjusting mechanism at conjunction, described gap adjusting mechanism includes regulating greatly screw, edge
Bar and minor adjustment screw;Described panel is a rectangular slab being gradually increased, described big regulation screw
Being located at the small end of rectangular slab, the big end of rectangular slab is located at by described minor adjustment screw;Described chuck body
Upper annular is evenly equipped with rail groove, and described rail groove is provided with described claw, the movement of described claw
Being controlled by the described jaw adjustment hole being located on described chuck body, institute is fixed in described measurement support
Stating the center, side of take-up housing, described measurement supports both sides and is respectively provided with measurement stud, a pair measurement
Block is fixed on described transition disc, and this is oppositely arranged with described measurement support measuring block.
Preferably, described adjustable eccentric chuck also includes a regulation handle, described regulation handle
Adjustable side coordinate with described jaw adjustment hole.
Preferably, described claw includes the first claw, the second claw and the 3rd claw.
Preferably, the work piece interface of described first claw, the second claw or the 3rd claw is
Plane.
Preferably, described plane is provided with rubbing surface.
Preferably, the work piece interface of described first claw is plane;Described second claw or
The work piece interface of the 3rd claw is a right-angle structure.
Preferably, described plane and right-angle structure are provided with rubbing surface.
Preferably, described rubbing surface is some raised lines.
Preferably, the end of described screw mandrel is provided with adjusting nut.
Preferably, described chuck body is additionally provided with an alarm device, described alarm device bag
Include alarm, battery, the first contact chip and the second contact chip;Described first contact chip and second
Contact chip is respectively arranged on described jaw adjustment hole, and described first contact chip connects described electricity
Pond, described battery connects described alarm, and described alarm connects described second contact chip.
Compared with prior art, the invention has the beneficial effects as follows: easy to adjust, highly versatile,
Time saving and energy saving, when measuring, can be by aid, such as gauge block or dial gauge, can
To obtain the highest precision, it is ensured that high-quality, is a kind of ideal fixture.
It addition, the present invention can also utilize engine lathe to process difform eccentric element, than
As, utilize engine lathe to process some square eccentric work pieces.
Finally, the present invention prevents the generation of serious accident by arranging alarm device, i.e.
When regulation handle insertion jaw adjustment hole screws claw, circuit ON, but it is because human body itself
Resistance, so alarm device will not normally-open be reported to the police, but when hands leave regulation handle and
When not extracting regulation handle, alarm device is reported to the police immediately, thus is reminded staff to extract regulation
Handle, just can start lathe, it is ensured that the safety of operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one eccentric shaft workpiece;
Fig. 2 is the structural representation of the embodiment of the present invention one eccentric bushing workpiece;
Fig. 3 is the decomposition texture schematic diagram of the embodiment of the present invention one adjustable eccentric chuck;
Fig. 4 is the perspective view of the embodiment of the present invention one adjustable eccentric chuck;
Fig. 5 is the decomposition texture schematic diagram of eccentricity regulating mechanism in Fig. 4;
Fig. 6 is the sectional structure schematic diagram of Fig. 4 intermediate gap governor motion;
Fig. 7 is the front view of the embodiment of the present invention two adjustable eccentric chuck;
Fig. 8 is the front view of the embodiment of the present invention three adjustable eccentric chuck;
Fig. 9 is the front view of the embodiment of the present invention four adjustable eccentric chuck.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the detailed description of the invention of the present invention is made the most in detail
Describe.Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.
Embodiment one
As shown in Fig. 3,4,5,6, the adjustable eccentric chuck of the present embodiment includes using stud
It is fixed on the transition disc 1 of lathe spindle connection dish, gap adjusting mechanism 2, eccentricity regulating mechanism
3,4, two pairs of clamping screws of take-up housing, screw 5, chuck body 6, claw 7, jaw adjustment hole 8,
Measure and support 9 and measure block 10,11 a pair;Described transition disc be provided with the first T-slot 1.1,
Dovetail groove the 1.2, second T-slot 1.3;Described take-up housing 4 top 4.1 is connected by described screw 5
Described chuck body 6, the dovetail guide 4.2 of described take-up housing 4 bottom is mutual with described dovetail groove 1.2
Coordinate, every pair of clamping screw 12,13;14, the T-shaped termination 12.1,13.1 of 15;14.1、15.1
Lay respectively in described first T-slot 1.1 and the second T-slot 1.3, clamping screw 12,13,14,
15 connect end 12.2,13.2,14.2,15.2 be respectively and fixedly connected with described take-up housing 4 connecting hole 16,
17、18、19;On described chuck body, annular is evenly equipped with rail groove 6.1,6.2,6.3, described rail
Road groove is provided with described claw 7, screwing described in being located on described chuck body of described claw
Jaw adjustment hole 8 controls, and the adjustable side of described regulation handle coordinates with described jaw adjustment hole 8,
When needs screw claw, operation regulation handle can realize.Described measurement supports 9 and is fixed on
The center, side 20 of described take-up housing, described support 9 both sides 9.1,9.2 of measuring are respectively provided with measurement spiral shell
Post 21,22, measures block 10,11 a pair and is fixed on described transition disc 1, and this is to measuring gear
Block 10,11 supports 9 with described measurement and is oppositely arranged, and measurement block can install dial gauge and carry out
Eccentric throw is measured.Described claw 7 includes the first claw the 7.1, second claw 7.2 and the 3rd claw
7.3, the work piece interface of described first claw, the second claw or the 3rd claw 7.11,7.12,
7.13 be plane, described plane is provided with rubbing surface, and described rubbing surface is some raised lines.
Above-mentioned eccentricity regulating mechanism 3 includes nut seat 23, and makees on described nut seat
The screw mandrel 24 of linear motion;Described nut seat is fixed on described dovetail groove 1.2, described screw mandrel
One end be connected in described dovetail guide 4.2 moving hole 30, the end of described screw mandrel is provided with
Adjusting nut 25.Leading screw is utilized in the movement of nut seat thus to adjust eccentric throw.Eccentric throw
Size is immediately arrived at by the scale of dial gauge, and unidirectional maximum eccentricity is 10mm, two-way is
20mm, eccentric precision is 0.01mm.
Eccentric adjustment away from during nut seat 23 axis should with the dead in line of leading screw 24,
If two axial lines is misaligned, then it is likely to occur the abrasion of flank of tooth one side or leading screw bending and cannot fill
The problem such as joining, solving this problem need to be through repeatedly debugging, until leading screw revolution is mobile smooth and easy, without being subject to
The phenomenon generation that power is uneven.And because dovetail guide 4.2 with dovetail groove 1.2 when coordinating,
Should there is the suitable working clearance (being typically advisable) with no more than 0.04mm.When gap is the least,
Mobile laborious, insensitive;During excesssive gap, working unstable, during turning, vibration is big, impact
The machining accuracy of part and surface roughness.Therefore, at described dovetail guide and described dovetail groove
Being provided with described gap adjusting mechanism 2 at the cooperation of side, described gap adjusting mechanism includes adjusting greatly
Joint screw 2.1, panel 2.2 and minor adjustment screw 2.3;Described panel 2.2 is one to be gradually increased
Rectangular slab, described big regulation screw 2.1 is located at the small end 2.21 of rectangular slab, described minor adjustment
The big end 2.22 of rectangular slab is located at by screw 2.3;During adjustment, first unclamp and regulate greatly screw, twist
Minor adjustment screw just can make panel advance, and tightens and regulates greatly screw, reaches to reduce gap
Purpose.To increase gap, first unclamp minor adjustment screw, twist and regulate greatly screw, then
Tightening minor adjustment screw again, reality regulates greatly screw, minor adjustment screw plays locking effect.
The embodiment of the present invention (using dial gauge to measure eccentric throw) is using lathe process bias work
Before part, first with dial gauge centering center, tighten four clamping screws simultaneously.Measuring on block
Dress dial gauge, makes table masthead live and measures the measurement stud on supporting, and tightens measure on block tight
Determine screw 25, and dial gauge scale is adjusted to zero.Unclamp clamping screw, during rotational lead screw,
Measuring stud to move closer to measure block, eccentric throw is gradually increased by zero, and eccentric throw is with dial gauge
Scale is as the criterion.If after eccentric throw is adjusted, then tighten clamping screw, prevent take-up housing from moving,
Shedding dial gauge, then workpiece is arranged on chuck body and is held by claw, can be processed
Turning, the present invention is applicable to middle batch unidirectional biasing post shape workpiece.
The embodiment of the present invention (using gauge block measurement eccentric throw) is using lathe process eccentric work piece
Before, first with dial gauge centering center, tighten four clamping screws simultaneously.Regulate two and measure spiral shell
The extension elongation of post, measures stud with miking two and measures the distance of block, being allowed to
Equal, the extension elongation of stud is then measured with hex nut 26 locking.Unclamp clamping screw,
Rotational lead screw, puts into gauge block measuring between stud and measurement block.If after eccentric throw is adjusted,
Tightening clamping screw again, prevent take-up housing from moving, then workpiece is arranged on chuck body and by card
Pawl is held, and can be processed turning, it is adaptable to middle batch bidirectional eccentric cylindrical workpiece.Eccentric
Away from size drawn by formula:
E=K-L
E eccentric throw in formula, mm;
K miking gained data, mm;
L gauge block size, mm;
Embodiment two
As it is shown in fig. 7, the present embodiment two is essentially identical with embodiment one, except that, this
The work piece interface 7.11 of the first claw 7.1 in embodiment is plane;Described second claw
7.2 and the 3rd the work piece interface 7.12,7.13 of claw 7.3 be a right-angle structure.Described flat
Face and right-angle structure are provided with rubbing surface.Described rubbing surface is some raised lines.
Embodiment of the present invention square shaped workpiece carries out assisting up and down to neutralizing card jail, the first claw
7.1 work piece interface 7.11 square shaped workpiece carry out top and fasten, and the second claw, the 3rd claw are straight
It is firm to neutralizing card that angle work piece interface 7.12,7.13 square shaped workpiece carries out left and right, can carry out
Processing turning, it is adaptable to middle batch ticket, bidirectional eccentric square cross.
Embodiment three
As shown in Figure 8, the present embodiment three is essentially identical with embodiment one, except that, this
An alarm device 100, described dress of reporting to the police it is additionally provided with on described chuck body 6 in embodiment
Put and include alarm 101, battery the 102, first contact chip 103 and the second contact chip 104;
Described first contact 103 and the second contact chip 104 are respectively arranged at described jaw adjustment hole 8
On, described first contact chip 103 connects described battery 102 by electric wire, and this battery is by electricity
Line provides power supply, described battery 102 to connect described alarm 101 for alarm, and alarm is used
In sending warning reminding, described alarm 101 connects described second contact chip 104 by electric wire.
Above-mentioned first contact 103 and the second contact chip 104 are not connected with chuck body 6.
The embodiment of the present invention prevents the generation of serious accident by arranging alarm device, i.e.
When regulation handle insertion jaw adjustment hole 8 screws claw 7, circuit ON, but it is because human body
The resistance of itself, so alarm device 100 will not normally-open be reported to the police, but when hands leaves regulation
Handle and do not extract regulation handle time, alarm device is reported to the police immediately, thus is reminded staff
Extract regulation handle, just can start lathe, it is ensured that the safety of operation.
Embodiment four
As it is shown in figure 9, the present embodiment four is essentially identical with embodiment two, except that, this
An alarm device 1000, described warning it is additionally provided with on described chuck body 6 in embodiment
Device includes alarm 1001, battery the 1002, first contact chip 1003 and the second contact chip
1004;Described first contact 1003 and the second contact chip 1004 are respectively arranged at described claw
On adjustment hole 8, described first contact chip 1003 connects described battery 1002 by electric wire, should
Battery provides power supply, described battery 1002 to connect described alarm by electric wire for alarm
1001, alarm is used for sending warning reminding, and described alarm 1001 connects institute by electric wire
State the second contact chip 1004.Above-mentioned first contact 1003 and the second contact chip 1004 not with
Chuck body 6 connects.
The embodiment of the present invention prevents the generation of serious accident by arranging alarm device, i.e.
When regulation handle insertion jaw adjustment hole 8 screws claw 7, circuit ON, but it is because human body
The resistance of itself, so alarm device 1000 will not normally-open be reported to the police, but when hands leaves tune
When saving handle and do not extract regulation handle, alarm device is reported to the police immediately, thus is reminded work people
Member extracts regulation handle, just can start lathe, it is ensured that the safety of operation.
The present invention is easy to adjust, highly versatile, time saving and energy saving, when measuring, and can be by auxiliary
Assistant engineer has, such as gauge block or dial gauge, it is possible to obtain the highest precision, it is ensured that high-quality,
It it is a kind of ideal fixture.It addition, the present invention can also utilize engine lathe processing difference
The eccentric element of shape, such as, utilizes engine lathe to process some square eccentric work pieces.Finally,
The present invention prevents the generation of serious accident, i.e. regulation handle from inserting by arranging alarm device
Enter jaw adjustment hole when screwing claw, circuit ON, but it is because the resistance of human body itself, institute
Will not normally-open report to the police with alarm device, but when hands leaves regulation handle and does not extracts regulation
During handle, alarm device is reported to the police immediately, thus reminds staff to extract regulation handle, just may be used
To start lathe, it is ensured that the safety of operation.
The above is only the preferred embodiment of the present invention, it is noted that lead for this technology
For the those of ordinary skill in territory, on the premise of without departing from the technology of the present invention principle, it is also possible to
Making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.