Production process of square step adjusting bolt and application thereof
A technology for adjusting bolts and production processes, applied in bolts, threaded fasteners, connecting components, etc., can solve the problems of abnormal steering, low production efficiency, and high processing costs, and achieve reduced material costs, high production efficiency, and high production efficiency. The effect of high material utilization
Active Publication Date: 2019-01-11
上海顺翼紧固件有限公司
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Problems solved by technology
The square step adjustment bolt is the most important adjustment bolt in the steering system. At present, the square steps in the market are generally produced by milling, cold extrusion and other methods. The process
Method used
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Embodiment 1
[0040] Such as Figure 1-7 As shown, the invention discloses a production process of a square step adjusting bolt, and the production process of a square step adjusting bolt includes the following steps:
[0041] Step 1: Cutting the blank; the intermittent step-by-step automatic cutting system is used to cut the blank, which automatically cuts out the reasonable length blank from the disk element linear raw material with a reasonable diameter, and sends it to the multi-stroke cold heading machine synchronously through the automatic feeding system for cold extrusion Press station.
[0042] Step 2: Forward extrusion of the preformed chamfering of the strong beam stem and tail; push the blank cut in step 1 into the first main mold through the first stroke die, and perform forward extrusion, so as to realize the strong beam stem and tail The preform is chamfered, and the preform blank is ejected through the ejector rod of the first main mold.
[0043] Step 3: Upsetting the head ...
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The invention relates to the field of machining, and discloses a production process of a square step adjusting bolt. The production process comprises the following steps that 1, a blank is cut out; 2,forward extrusion is carried out on a strong beam rod part and a tail part to pre-form chamfer; 3, head upsetting pre-forming and tail end fine rod forming are carried out; 4, the head is pre-formed;5, a square step is cut; 6, CNC trimming is carried out, and burrs are removed; and 7, straightening and grinding are carried out on the thread after tempering. According to the production process, the defects that the material utilization rate is low, it is hard for the size to meet the adjusting requirement of a steering system, and the capacity cannot meet the market demand in the case of thetraditional processing method are overcome; the characteristics of the cold heading cold extruding technology are fully utilized, automatic production of the production process and the manufacturing of the square step adjusting bolt is realized, and the square step adjusting bolt is characterized in that a square step is required to be smooth and free of a notch, and lower supporting surface is required to be smooth, flat, and free of burrs; and form and location tolerance requirements such as the vertical degree of the lower supporting surface and the rod part, rod part run-out degree and thesquare step symmetry degree are high.
Description
technical field [0001] The invention relates to the field of mechanical processing, in particular to a production process and application of a square step adjusting bolt. Background technique [0002] The car steering system is a series of devices used to change or maintain the driving direction of the car. Its function is to control the driving direction of the car according to the driver's wishes. Automobile steering system is one of the most basic systems of automobiles. Its reliability and convenience are very important to ensure the safety of automobiles. The square step adjusting bolt is the most important adjusting bolt in the steering system. At present, the square step in the market is generally produced by milling, cold extrusion and other methods. The process is complicated, the production efficiency is low, the material cost is high, and the processing cost is high. Moreover, the market reported that there was abnormal noise when the car turned when the product ...
Claims
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Login to View More IPC IPC(8): B23P15/00B21K1/46
CPCB21K1/46B23P15/00
Inventor 周满志
Owner 上海顺翼紧固件有限公司