CN2923119Y

CN2923119Y - Device for processing column-shape polyhedral whose section is regular polygon

Info

Publication number: CN2923119Y
Application number: CN 200520140132
Authority: CN
Inventors: 赵韩; 吴焱明; 徐林森; 张栋
Original assignee: Hefei University of Technology
Current assignee: Hefei University of Technology
Priority date: 2005-12-20
Filing date: 2005-12-20
Publication date: 2007-07-18
Anticipated expiration: 2015-12-20

Abstract

A stylolitic polyhedral processing equipment with a polygonal transverse section is provided and is comprised of a turning nose on which a rotating workpiece clamp which wheels around a center in one direction at angle of 1 Omega is arranged; and the workpiece is fastened by the clamp and workpiece clamp are coaxially arranged. A knife rest where the cutter is positioned is provided and is a turn-plate which rotates around the center at an angle of Omega; two groups of movable guide ways for the knife rest, wherein, one is a radial guide way arranged in the radial direction of the workpiece, while the other is a guide way arranged in the axial direction of the workpiece; the rotation speed Omega of the knife rest is the round-number times of the rotation speed of Omega1 of the workpiece clamp; and the knife rest rotates in the same direction as the workpiece clamp. The utility model can process polyhedron with high efficiency and high precision free from graduation, and forming can be realized in a single process.

Description

Cross section is the polyhedral processing unit (plant) of the column of regular polygon

Technical field:

The utility model relates to machinery processing apparatus, and the cross section of more specifically saying so is the polyhedral processing unit (plant) of the column of regular polygon.

Background technology:

At present, be the column polyhedron of regular polygon for cross section, generally all be to adopt the method for milling or planing to process, need calibration man-hour adding, and press calibration face one side one side and process fully.The existing problem of this mode is: machining accuracy and working (machining) efficiency are not high.And with respect to milling or planing, the mode of turning is much higher on machining accuracy and working (machining) efficiency, and still, according to the mode of existing turning, the processing that can finish all is revolving body basically, as cylinder or cone etc.

Summary of the invention:

Technical problem to be solved in the utility model is for avoiding above-mentioned existing in prior technology weak point, and it is the polyhedral processing unit (plant) of column of regular polygon that cross section is provided.

The technical scheme that the utility model technical solution problem is adopted is:

Design feature of the present utility model is that its structure composition comprises: a turning head, and the angular speed that has on the turning head with ω 1 is the swinging work piece holder that folk prescription rotates to centering, is clamped in workpiece and the coaxial setting of work piece holder on the work piece holder; One is used for the knife rest of mounting cutter, and knife rest is to make the rotating disk that centering is rotated with angular velocity omega, and two groups of knife rest moving guide rails are set, the radial guidance that the first upwards is provided with along the footpath of workpiece; Another is the axial guidance along the axial setting of workpiece; The rotational speed omega that knife rest is set is the integral multiple of the rotational speed omega 1 of work piece holder, and knife rest is identical with the work piece holder rotation direction.

Processing method of the present utility model is to adopt turning, and workpiece to be machined is the column revolving body, and the movement locus that the turning cutter head forms on described workpiece is composited by following motion:

Workpiece is rotating shaft with its gyroaxis, is folk prescription with the angular speed of ω 1 and rotates to centering;

The turning cutter head forms turning on the excircle of workpiece, the turning cutter head has simultaneously:

Along radially feed of workpiece; Along described workpiece spindle to feed; With knife rest center O point is the center of circle, rotates with the angular speed centering of ω;

The cutter head rotational speed omega is the integral multiple of workpiece rotational frequency ω 1; And cutter head is identical with the workpiece rotation direction;

Compared with the prior art, the beneficial effects of the utility model are embodied in:

1, the utility model can high efficiency be processed regular polygon accurately, and cross sectional shape can be positive n limit such as positive triangle, square, regular pentagon, a regular hexagon shape, without calibration, and once-forming.

2, the utility model apparatus structure is simple, and is easy to implement, can be by existing lathe is converted.

Description of drawings:

Fig. 1 is the utility model processing method principle schematic.

Fig. 2 is cutter head movement locus schematic diagram in the column polyhedron process of positive triangle for cross section.

Fig. 3 is cutter head movement locus schematic diagram in the column polyhedron process of square for cross section.

Fig. 4 is a cutter head movement locus schematic diagram in the orthohexagonal column polyhedron process for cross section.

Fig. 5 is the utility model apparatus structure schematic diagram.

Fig. 6 is the utility model device plan structure schematic diagram.

Number in the figure: 1 workpiece, 2 cutters, 3 radial guidances, 4 motors, 5 axial guidances, 6 knife rests, 7 work piece holders.

Below by the specific embodiment the utility model is further described:

Embodiment:

Referring to Fig. 1, in the present embodiment, adopt the mode of turning, workpiece to be machined 1 is the column revolving body, the movement locus that the turning cutter head forms on workpiece 1 is composited by following motion:

Workpiece 1 is rotating shaft with its gyroaxis, is folk prescription with the angular speed of ω 1 and rotates to centering;

The turning cutter head forms turning on the excircle of workpiece 1, the turning cutter head has simultaneously:

Along radially feed of workpiece 1; Along workpiece 1 axial feed; Center O point with knife rest 6 is the center of circle, rotates with the angular speed centering of ω;

The cutter head rotational speed omega is n a times of workpiece rotational frequency ω 1, and n is an integer; And cutter head is identical with the workpiece rotation direction.

Referring to Fig. 5, Fig. 6, as processing unit (plant), adopt turning machine in the present embodiment, have on the turning machine and make workpiece 1 be rotating shaft, be the work piece holder 7 that folk prescription rotates to centering with the angular speed of ω 1 with its gyroaxis, the knife rest 6 that is used for mounting cutter 2, knife rest 6 is to make the rotating disk that centering is rotated with angular velocity omega, and rotating disc type knife rest 6 has respectively along the tracks on workpiece 1 radial and axial.

In concrete the enforcement, the rotational speed omega of rotating disc type knife rest 6 is integral multiples of the rotational speed omega 1 of work piece holder 7, and rotating disc type knife rest 6 is identical with the rotation direction of work piece holder 7.

By shown in Figure 1, be that the origin of coordinates is set up fixed coordinate system xOy with the central point O of knife rest 1, with the central point O of workpiece 2 ₁For the origin of coordinates is set up moving coordinate system x ₁O ₁y ₁, it is cemented on the workpiece 1.If knife rest 6 is that rH, cutter head M (being point of a knife) arrive the center O point of knife rest 6 apart from being r with the centre-to-centre spacing of workpiece 1 _M'; M is to the center O of workpiece 1 ₁The distance of point is r _Mα, β are respectively first parallactic angle, the x of OM and x axle ₁First parallactic angle with the x axle;  _g,  _aBe respectively the corner of knife rest 6 and workpiece 1, i.e.  _g=ω t, ω a=ω ₁T; All angles all measure from x axle forward, and get

Then can get the track that cutter head (being point of a knife) forms on workpiece is:

When n distinguished 3,4,6, the track that cutter head forms on workpiece was respectively as Fig. 2, Fig. 3 and shown in Figure 4.

It is relevant with the centre-to-centre spacing between cutter and workpiece with the radius of gyration of cutter head to process polyhedral straightness error: when the ratio of the cutter head radius of gyration and centre-to-centre spacing approaches 1 more, then its straightness error is just more little.

Referring to Fig. 5, Fig. 6, present embodiment is reequiped CA6140 type lathe.The knife rest of former lathe is removed, the unit head is made up of servomotor 4 is installed on the planker, installation rotating disc type knife rest 6 and electrical apparatus control system on unit head.Electrical apparatus control system guarantees that the rotating speed of unit head drive knife rest 6 is positive integer times n=3,4,5,6 of the rotating speed of workpiece 1 ... and workpiece 1 is identical with the direction of rotation of rotating disc type knife rest 6.

Fig. 6 illustrates, and the compound motion of rotating disc type knife rest 6 comprises: rotation, the moving radially on radial guidance 3 of rotating disc type knife rest 6 self, and moving axially on axial guidance 5.

Shown in Figure 2, the processing cross section is that the length of side is the positive triangle part of 10mm, and the radius of gyration of getting cutter head (being point of a knife) is 204mm, cutter and workpiece centre distance are 207mm, the rotating speed of workpiece is 1000 rev/mins, and the rotating speed of cutter is 3000 rev/mins, and then processing positive triangle linearity is 0.02mm.

Shown in Figure 3, the processing cross section is the square part of 10 * 10mm, and the radius of gyration of getting cutter head (being point of a knife) is 250mm, cutter and workpiece centre distance are 255mm, the rotating speed of workpiece is 1000 rev/mins, and the rotating speed of cutter is 4000 rev/mins, and then processing the square linearity is 0.025mm.

Shown in Figure 4, the processing cross section is that the length of side is the regular hexagon part of 10mm, and the radius of gyration of getting cutter head (being point of a knife) is 62mm, cutter and workpiece centre distance are 71mm, the rotating speed of workpiece is 500 rev/mins, and the rotating speed of cutter is 3000 rev/mins, and then processing the regular hexagon linearity is 0.01mm.

Claims

1, cross section is the polyhedral processing unit (plant) of column of regular polygon, it is characterized in that its structure composition comprises:

One turning head, the angular speed that has on described turning head with ω 1 is the swinging work piece holder (7) that folk prescription rotates to centering, is clamped in workpiece (1) and the coaxial setting of work piece holder (7) on the work piece holder (7);

One is used for the knife rest (6) of mounting cutter (2), and described knife rest (6) is to make the rotating disk that centering is rotated with angular velocity omega, and two groups of knife rest moving guide rails are set, the radial guidance (3) that the first upwards is provided with along the footpath of workpiece (1); Another is the axial guidance (5) along the axial setting of workpiece (1);

The rotational speed omega that knife rest (6) is set is the integral multiple of the rotational speed omega 1 of work piece holder (7), and knife rest (6) is identical with work piece holder (7) rotation direction.