Forming mold and method for variable-pitch rack pre-forming piece
A technology for preformed parts and forming molds, which is applied to forming tools, manufacturing tools, vehicle parts, etc., can solve the problems of poor straightness of preformed workpieces, difficult forming and positioning, uneven tooth surface, etc., and achieves reliable positioning and simple structure. , the effect of simple forming method
Inactive Publication Date: 2018-09-07
TAICANG JIUXIN PRECISION MOLD
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Problems solved by technology
If the design of the preformed blank and the preformed mold is not reasonable, it will cause difficulties in the positioning of the subsequent forming, resulting in uneven tooth surfaces and poor straightness of the preformed workpiece, which will lead to problems such as flashing
Method used
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Embodiment Construction
[0042] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0043] This embodiment provides a forming die for a variable pitch rack preform, such as Figure 1-14 As shown, the forming mold includes a lower mold 1 and an upper mold 2, wherein the lower mold 1 includes a lower mold 11 and a lifting mechanism 12 that is respectively arranged on both sides of the lower mold 11, and the upper mold 2 includes an upper mold 21 and is respectively arranged on the lower mold 11. The pressing mechanism 22 on both sides of the upper mold 21. Simultaneously, between the upper mold 2 and the lower mold 1, the preformed blank 80 is placed. Die 11 and patrix 21 are oppositely arranged. In addition, the upper mold 2 can move vertically up and down relative to the lower mold 1 , and the preformed blank 80 is formed into a preformed workpiece 90 through the upper mold 2 and...
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The invention belongs to the technical field of rack manufacturing and discloses a forming mold and method for a variable-pitch rack pre-forming piece. The forming mold comprises an upper mold and a lower mold; the lower mold comprises a lower mold body and a floating and rising mechanism arranged on the two sides of the lower mold body; and the upper mold comprises an upper mold body and a material pressing mechanism arranged on the two sides of the upper mold body. A pre-forming blank material is placed between the upper mold and the lower mold, and the two ends of the pre-forming blank material are arranged between the floating and rising mechanism and the material pressing mechanism; and the middle segment of the pre-forming blank material is arranged between the lower mold body and the upper mold body. The upper mold can vertically move up and down relative to the lower mold, and the pre-forming blank material is formed into a pre-forming workpiece through the upper mold and the lower mold. The forming method includes the following steps that firstly, the pre-forming blank material is manufactured; and secondly, pressing and pre-forming are performed. Due to the fact that thetwo ends of the pre-forming blank material are arranged between the floating and rising mechanism and the material pressing mechanism, positioning of the pre-forming blank material is reliable, and therefore the linear precision of the pre-forming workpiece is improved.
Description
technical field [0001] The invention relates to the technical field of rack manufacturing, in particular to a forming die and method for a variable-pitch rack preform. Background technique [0002] The steering gear is also called the steering gear, and the steering gear rack is a key component of the steering system of the car. During the steering process of the car, the rotational motion of the steering wheel is converted into the linear motion of the rack through the meshing of the rack and pinion, and the rack drives the wheel deflection through the transmission mechanism, thereby realizing the steering of the car. [0003] The traditional automotive steering gear rack has equidistant teeth and belongs to equal-pitch racks, which are usually manufactured by cutting. The advanced automobile steering gear adopts the variable pitch rack, and the pitch between the teeth changes according to the law of design. The steering gear is equipped with a variable pitch rack, which ...
Claims
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IPC IPC(8): B21D37/10B21D37/12B21D22/02B23P15/14
CPCB21D37/10B21D22/022B21D37/12B23P15/14B23P2700/50
Inventor 钟志平梁阿慧章立预
Owner TAICANG JIUXIN PRECISION MOLD