[summary of the invention]
Based on this, be necessary to provide a kind of end to be processed roll extrusion position that can effectively prevent to produce the THREAD ROLLING DIES of distortion.
A kind of THREAD ROLLING DIES is used for rolling the excircle roll extrusion to machined part of tooth machine and produces plastic deformation, and THREAD ROLLING DIES comprises column gear wheel portion and is located at the alignment portion at gear wheel portion two ends.
Preferably, the excircle slyness of alignment portion, surface roughness are Ra1.6-Ra0.4.
Preferably, gear wheel portion and alignment portion are formed in one.
Preferably, the tooth form of gear wheel portion is roll threading.
Preferably, the tooth form of gear wheel portion is a trapezoidal screw.
Preferably, the tooth form of gear wheel portion is a reticulate pattern.
Preferably, the tooth form of gear wheel portion is a straight burr.
Preferably, THREAD ROLLING DIES is provided with the installing hole that runs through gear wheel portion and alignment portion along axis direction.
Preferably, offer keyway on the hole wall of installing hole.
By one or both ends slick and sly alignment portion is set in gear wheel portion, when carrying out machining to machined part, rolling tooth process and alignment process can carry out synchronously, production efficiency is provided, simultaneously, cylindricity, axiality or the round tolerance of beating that can guarantee machining screw, trapezoidal screw, straight burr or one or both ends, reticulate pattern position satisfy the requirement to the product precision within 0.005-0.025.
[description of drawings]
Fig. 1 is the THREAD ROLLING DIES front view that an embodiment has roll threading;
Fig. 2 is the side view of THREAD ROLLING DIES shown in Figure 1;
Fig. 3 is the THREAD ROLLING DIES front view that an embodiment has trapezoidal screw;
Fig. 4 is the side view of THREAD ROLLING DIES shown in Figure 3;
Fig. 5 is the THREAD ROLLING DIES front view that an embodiment has straight burr;
Fig. 6 is the side view of THREAD ROLLING DIES shown in Figure 5;
Fig. 7 is the THREAD ROLLING DIES front view that an embodiment has reticulate pattern;
Fig. 8 is the side view of THREAD ROLLING DIES shown in Figure 7.
[specific embodiment]
Mainly reaching specific embodiment below in conjunction with the accompanying drawings further describes in detail THREAD ROLLING DIES.
Rolling the tooth machine is the special mechanical equipment of producing the excircle screw thread.The operation principle of rolling the tooth machine is, uses two screwed THREAD ROLLING DIESs to push workpiece to be processed, makes the outer round surface generation plastic deformation of workpiece, forms screw thread.
The THREAD ROLLING DIES 100 of Fig. 1, an embodiment shown in Figure 2, promptly be used for rolling tooth machine excircle to machined part carries out roll extrusion so that to be processed produce plastic deformation, to be processed excircle forms and the opposite shape of THREAD ROLLING DIES 100 tooth forms.THREAD ROLLING DIES 100 comprises the gear wheel portion 110 of column and is located at the column alignment portion 120 at column gear wheel portion 110 two ends.Other preferred embodiment in, alignment portion 120 can also be only in end settings of gear wheel portion 110, guarantee that the termination rolls the axiality of tooth product and circle and beat etc. and to meet the product quality requirement.
Alignment portion 120 excircle slynesses, surface roughness requires should be between Ra1.6-Ra0.4.
Preferably, the design that is formed in one of the gear wheel portion of present embodiment 110 and alignment portion 120, thus the machine-shaping of whole THREAD ROLLING DIES 100 is easier.
THREAD ROLLING DIES 100 offers along axis direction and is used for and rolls the affixed installing hole 130 of respective fixation device on the tooth machine, and further offers keyway 140 at the hole wall of installing hole 130 along the axis direction of THREAD ROLLING DIES 100.THREAD ROLLING DIES 100 in the present embodiment is provided with a square keyway 140, in other embodiments, for guaranteeing that THREAD ROLLING DIES 100 each several parts are stressed evenly in rolling the tooth process, can also be symmetrical arranged a plurality of square keyways 140.
The gear wheel portion 110 of present embodiment THREAD ROLLING DIES 100 is the roll threading structure, and in addition, gear wheel portion 110 can also be other tooth form structure, specifically states embodiment as follows.
Tooth form is the THREAD ROLLING DIES of trapezoidal screw:
As shown in Figure 3 and Figure 4, trapezoidal screw THREAD ROLLING DIES 200 comprises the gear wheel portion 210 of column and is located at the column alignment portion 220 of the slyness at column gear wheel portion 210 two ends.The external diameter of alignment portion 220 is consistent with the external diameter of gear wheel portion 210, and gear wheel portion 210 is formed in one with alignment portion 220.The surface roughness of alignment portion 220 requires should be between Ra1.6-Ra0.4.
Trapezoidal screw THREAD ROLLING DIES 200 offers along axis direction and is used for and roll the affixed installing hole 230 of respective fixation device on the tooth machine, and further offers keyway 240 at the hole wall of installing hole 230 along axis direction.
Tooth form is the THREAD ROLLING DIES of straight burr:
As shown in Figure 5 and Figure 6, straight burr THREAD ROLLING DIES 300 comprises the gear wheel portion 3 10 of column and is located at the column alignment portion 320 of the slyness at column gear wheel portion 310 two ends.The external diameter of alignment portion 320 is consistent with the external diameter of gear wheel portion 3 10, and gear wheel portion 310 is formed in one with alignment portion 320.The surface roughness of alignment portion 320 requires should be between Ra1.6-Ra0.4.Straight burr THREAD ROLLING DIES 300 offers along axis direction and is used for and roll the affixed installing hole 330 of respective fixation device on the tooth machine, and further offers keyway 340 at the hole wall of installing hole 330 along axis direction.
Tooth form is the THREAD ROLLING DIES of reticulate pattern:
As shown in Figure 7 and Figure 8, reticulate pattern THREAD ROLLING DIES 400 comprises the gear wheel portion 410 of column and is located at the column alignment portion 420 of the slyness at column gear wheel portion 410 two ends.The external diameter of alignment portion 420 is consistent with the external diameter of gear wheel portion 410, and gear wheel portion 410 is formed in one with alignment portion 420.The surface roughness of alignment portion 420 requires should be between Ra1.6-Ra0.4.
Reticulate pattern THREAD ROLLING DIES 400 offers along axis direction and is used for and roll the affixed installing hole 430 of respective fixation device on the tooth machine, and further offers keyway 440 at the hole wall of installing hole 430 along axis direction.
By one or both ends slick and sly alignment wheel is set at gear wheel, when carrying out machining to machined part, rolling tooth process and alignment process can carry out synchronously, production efficiency is provided, simultaneously, cylindricity, axiality or the round tolerance of beating that can guarantee machining screw, trapezoidal screw, straight burr or one or both ends, reticulate pattern position satisfy the requirement to the product precision within 0.005-0.025.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.