CN104063538A - Plotting design method for swinging-rolling non-rotating upper mould - Google Patents

Plotting design method for swinging-rolling non-rotating upper mould Download PDF

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Publication number
CN104063538A
CN104063538A CN201410249182.6A CN201410249182A CN104063538A CN 104063538 A CN104063538 A CN 104063538A CN 201410249182 A CN201410249182 A CN 201410249182A CN 104063538 A CN104063538 A CN 104063538A
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cone
rotating
axis
swinging
patrix
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CN104063538B (en
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韩星会
华林
庄武豪
董丽颖
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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Abstract

The invention relates to a plotting design method for swinging-rolling non-rotating upper mould. The method of the invention comprises the following steps: S1) building a three-dimensional geometrical model for a swinging-rolling part; S2) defining the axis of the swinging-rolling part and the intersection point of the axis and the upper surface of the swinging-rolling part; S3) building a cone of which the axis coincides with the axis of the swinging-rolling part on the condition that the intersection point defined in S2 is considered as the apex of the cone, the generatrix of the non-rotating type surface of the upper surface of the swinging-rolling part is considered as the generatrix of the cone, and the angle (180 degrees-2 Gamma) is considered as the apex angle of the cone; S4) building a plurality of surfaces and acquiring a plurality of intersection lines due to that the surfaces intersect the non-rotating type surface of the upper surface of the swinging-rolling part; S5) rotating the intersection lines acquired in S4 at Gamma degrees in a direction of the axis of the cone so as to acquire a set of rotated curves; S6) constructing a curved surface on the base that the curves are acquired in S5; S7) merging and hypostatizing the cone and the curved surface to acquire the swinging-rolling non-rotating upper mould. Through the method, the non-rotating upper mould, of which the shape of the upper surface is arbitrary, corresponding to the non-rotating part can be designed out; besides, the geometric accuracy is high.

Description

Pendulum is rolled over the Drawing Design method of non-rotating patrix
Technical field
The present invention relates to pendulum and roll over Design of Dies field, more particularly, relate to a kind of Drawing Design method of rolling over non-rotating patrix of putting.
Background technology
It is successive partial plastic forming new technology that pendulum is rolled over, have laborsaving, impact little, vibrate little, noise is little, energy-saving material-saving and Product Precision advantages of higher, is widely used in numerous industrial circles such as machinery, automobile, electrical equipment, instrument, hardware & tools.From pendulum, roll over design of part in form, the upper surface of most of part is simple revolving molding surface, and lower surface is complicated non-rotating profile.In this class part rotary roll, conventionally the non-rotating profile of complexity is placed in counterdie and is shaped, the revolving molding surface of simple shape is swung and is shaped by patrix.Because patrix is the simple solid of revolution matching with part upper surface, therefore this upper die structure simplicity of design, as long as determine solid of revolution bus, just can design upper die structure.
But the part more complicated for shape, upper and lower surface all has non-rotating profile, currently used main machining method is first part upper surface to be reduced to simple revolving molding surface, then the upper and lower profile of rotary roll part according to the method described above, last cut part upper surface obtains non-rotating profile.If can a upper and lower non-rotating profile of such part of rotary roll, all drawbacks that can avoid follow-up cut to bring, and then realize Complex Surface Part near-net-shape.In order to realize upper and lower non-rotating profile part by one-step rotary roll, it is a link of most critical that pendulum is rolled over patrix design.It is the non-rotating profile matching with part upper surface that pendulum is rolled over patrix surface, but because patrix is tapered, the non-rotating profile of patrix can not be carried out simple Boolean calculation acquisition according to part upper surface shape, and non-rotating patrix and part upper surface carry out complicated space gear motion, this makes non-rotating patrix design become very complicated.At present, also about pendulum, do not roll over the report of non-rotating patrix method for accurately designing.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of Drawing Design method of rolling over non-rotating patrix of putting is provided, and can accurately design upper surface is the corresponding non-rotating patrix of non-rotating part of arbitrary shape.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of Drawing Design method of rolling over non-rotating patrix of putting, comprise the following steps:
S1, foundation pendulum are rolled over part 3-D geometric model, determine the part upper surface shape by upper contour forming;
S2, according to pendulum, roll over the shape of part, determine that pendulum rolles over the axis of part and the intersection point of this axis and part upper surface;
S3, the definite intersection point of the described step S2 of take are summit, and the part upper surface revolving molding surface bus of take is bus, and 180 ° of-2 γ of take are drift angle, set up the cone that an axis overlaps with axis of workpiece, and wherein γ is patrix pivot angle;
S4, by described cone axis, set up a plurality of planes, each plane and the non-rotating profile of part upper surface intersect and obtain many intersections;
In S5, each plane of creating at step S4 by cone apex, set up normal, take each normal as turning axle, by the respective quadrature wire-wound cone apex obtaining in step S4 to cone axis direction rotation γ angle, thereby obtain one group of postrotational curve;
S6, a suite line of step S5 gained is built into curved surface;
The curved surface that S7, the cone that step S3 is set up and step S5 set up merges and hypostazation, can obtain pendulum and roll over non-rotating patrix.
Implement pendulum of the present invention and roll over the Drawing Design method of non-rotating patrix, there is following beneficial effect:
The present invention puts and rolles over non-rotating patrix Drawing Design method simply, efficiently, there is very strong versatility, can design upper surface is the corresponding non-rotating patrix of non-rotating part of arbitrary shape, and designed patrix geometric accuracy is high, can guarantee well part upper surface rotary roll precision.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the front view of bevel gear part;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the front view of patrix cone;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5-Fig. 7 is non-rotating patrix design process schematic diagram;
Fig. 8 is the structural representation of non-rotating patrix.
Embodiment
For technical characterictic of the present invention, object and effect being had more clearly, understand, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
The present embodiment all has the corresponding non-rotating patrix of bevel gear Element Design of non-rotating profile for a upper and lower surface.Bevel gear part 1 upper surface is the non-rotating profile with irregular groove 2, and this groove 2 is arbitrary shape, can embody the versatility of this kind of method.
The non-rotating patrix design of this embodiment comprises the following steps:
S1, set up bevel gear part 1 3-D geometric model, as shown in Figure 1 and Figure 2.Bevel gear part 1 lower surface profile of tooth is placed in counterdie and is shaped, and the non-rotating profile of its upper surface is swung and is shaped by patrix.
S2, according to the shape of bevel gear part 1, determine the intersection point O of its axis AB and this axis and part 1 upper surface.
S3, mistake axis of workpiece AB create plane, and this plane and part 1 upper surface revolving molding surface are crossing obtains an intersection, take this intersection as revolution bus, the O point of take is summit, 180 ° of-2 γ of take are drift angle, set up the cone 3 that an axis overlaps with axis of workpiece AB, as shown in Figure 3, Figure 4.Wherein γ is patrix pivot angle.
S4, by cone 3 axis AB, set up a plurality of planes, each plane and the non-rotating profile of part 1 upper surface intersect and obtain many intersections, as shown in Figure 5, Figure 6.
In S5, each plane of creating at step S4 by cone 3 summit O, set up normal, take each normal as turning axle, by the intersection obtaining in step S4 around O point to cone 3 axis AB direction rotation γ angles, thereby obtain one group of postrotational curve, as shown in Figure 5, Figure 6.
S6, a suite line of step S5 gained is built into curved surface, as shown in Figure 7.
The curved surface that S7, the cone 3 that step S3 is set up and step S6 set up merges and hypostazation, obtains pendulum and rolles over non-rotating patrix 4, as shown in Figure 8.
By reference to the accompanying drawings enforcement of the present invention is described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, also can make a lot of forms, within these all belong to protection of the present invention.

Claims (1)

1. put a Drawing Design method of rolling over non-rotating patrix, it is characterized in that, comprise the following steps:
S1, foundation pendulum are rolled over part 3-D geometric model, determine the part upper surface shape by upper contour forming;
S2, according to pendulum, roll over the shape of part, determine that pendulum rolles over the axis of part and the intersection point of this axis and part upper surface;
S3, the definite intersection point of the described step S2 of take are summit, and the part upper surface revolving molding surface bus of take is bus, and 180 ° of-2 γ of take are drift angle, set up the cone that an axis overlaps with axis of workpiece, and wherein γ is patrix pivot angle;
S4, by described cone axis, set up a plurality of planes, each plane and the non-rotating profile of part upper surface intersect and obtain many intersections;
In S5, each plane of creating at step S4 by cone apex, set up normal, take each normal as turning axle, by the respective quadrature wire-wound cone apex obtaining in step S4 to cone axis direction rotation γ angle, thereby obtain one group of postrotational curve;
S6, a suite line of step S5 gained is built into curved surface;
The curved surface that S7, the cone that step S3 is set up and step S5 set up merges and hypostazation, can obtain pendulum and roll over non-rotating patrix.
CN201410249182.6A 2014-06-06 2014-06-06 Pendulum rolles over the Drawing Design method of non-rotating upper mould Active CN104063538B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103028687A (en) * 2013-01-17 2013-04-10 四川新筑精坯锻造有限公司 Swinging and rolling device for non-rotating body and forging process of swinging and rolling device
CN103071741A (en) * 2013-01-04 2013-05-01 河南科技大学 Hypoid gear rotary forging processing device and method for processing hypoid gear

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103071741A (en) * 2013-01-04 2013-05-01 河南科技大学 Hypoid gear rotary forging processing device and method for processing hypoid gear
CN103028687A (en) * 2013-01-17 2013-04-10 四川新筑精坯锻造有限公司 Swinging and rolling device for non-rotating body and forging process of swinging and rolling device

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