41mm Stainless Steel Adjustable Leveling Feet M8 Leveling Feet

                        Method of thread machining
Thread rolling is a processing method in which a forming rolling die is used to make the workpiece

produce plastic deformation to obtain threads. Thread rolling is generally carried out on a thread

rolling machine, a thread rolling machine or an automatic lathe attached with an automatic opening

and closing thread rolling head. It is suitable for mass production of external threads of standard

fasteners and other threaded connectors. The outer diameter of the rolled thread is generally no

more than 25mm, the length is no more than 100mm, the thread accuracy can reach grade 2

(gb197-63), and the diameter of the blank used is roughly equal to the pitch diameter of the

processed thread. Generally, the internal thread cannot be processed by rolling, but for the

workpiece with soft material, the slottless extrusion tap can be used to cold extrude the internal

thread (the maximum diameter can be about 30mm). The working principle is similar to tapping.

When cold extruding internal thread, the required torque is about twice larger than tapping, and

the machining accuracy and surface quality are slightly higher than tapping.

The advantages of thread rolling are:
① The surface roughness is less than that of turning, milling and grinding;

② The strength and hardness of the thread surface after rolling can be improved due to cold

work hardening;

③ High material utilization;

④ The productivity is doubled than that of cutting, and it is easy to realize automation;

⑤ Rolling die has a long service life. However, the hardness of workpiece material for rolling thread

shall not exceed hrc40; High requirements for blank dimensional accuracy; The precision and

hardness of rolling die are also high, so it is difficult to manufacture die; It is not suitable for rolling

threads with asymmetric tooth shape.

According to different rolling dies, thread rolling can be divided into thread rolling and thread rolling.

According to different rolling dies, thread rolling can be divided into thread rolling and thread rolling.
The thread rolling is that two thread thread rolling plates are staggered with 1 / 2 pitch, the static

plate is fixed, and the moving plate moves in a reciprocating straight line parallel to the static plate.

When the workpiece is sent between the two plates, the moving plate moves forward to rub and press

the workpiece to make its surface plastic deformation into threads.

There are three kinds of rolling wire: radial rolling wire, tangential rolling wire and rolling head rolling

wire.

① Radial thread rolling: two (or three) thread thread rolling wheels are installed on mutually parallel

shafts, the workpiece is placed on the support between the two wheels, the two wheels rotate at the

same speed in the same direction, and one wheel also makes radial feed movement. The workpiece

rotates driven by the thread roller, and the surface is extruded radially to form threads. For some

lead screws with low precision requirements, similar methods can also be used for rolling forming.

② Tangential wire rolling: also known as planetary wire rolling, the rolling tool is composed of a

rotating central wire rolling wheel and three fixed arc wire plates. During wire rolling, the workpiece

can be fed continuously, so the productivity is higher than that of wire rolling and radial wire rolling.

③ Thread rolling head: it is carried out on an automatic lathe and is generally used to process short

threads on workpieces. In the rolling head, there are 3 ~ 4 thread rollers evenly distributed around

the periphery of the workpiece. During thread rolling, the workpiece rotates and the rolling head

feeds axially to roll the workpiece out of the thread.

Stainless Steel Adjustable Feet Parameter

Stainless Steel Adjustable Feet Size

Stainless Steel Adjustable Feet Material

Stainless Steel Adjustable Feet Describe

Application.

Stainless Steel Adjustable Feet Scope of application

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