What is the difference between a ball screw and an ordinary lead screw?

When you say ordinary lead screw, you mean a trapezoidal sliding lead screw. Their main differences are:

1--- Transmission efficiency.

The transmission efficiency of the ball screw is about 90 96%, and the transmission efficiency of the trapezoidal screw is about 26 46%. That is, if the same large load is driven, the use of ball screws can use a smaller drive power, such as a smaller power motor, which can reduce both cost and energy consumption.

2--- Transmission speed.

The ball screw is rolling friction, and the trapezoidal screw is sliding friction, and the temperature rise of the former is much lower than that of the latter when working, so it can undertake high-speed transmission tasks.

3. --- service life.

The surface damage of rolling friction is much smaller than that of sliding friction, so the maintenance life of ball screws is much higher than that of trapezoidal screws when the conditions of cleaning and lubrication are met.

4. Self-locking ---.

Self-locking is generally inversely proportional to transmission efficiency, so ball screws have little self-locking, while trapezoidal screws have some self-locking (depending on the size of the lead angle and the roughness of the working face).

5. --- economy.

Judging from the previous and current situation, the ball screw is still higher than the trapezoidal screw because of its complex structure than the trapezoidal screw. However, as the number of automation equipment increases and the output increases, the difference is getting smaller and smaller.

What is the difference between a ball screw and a trapezoidal lead screw.

Material for ball screws:

Low-precision, light-load ball screws can be made of non-alloy (carbon) structural steel (such as steel), which is normalized and quenched; Some options are available for cold-rolled forming steels (e.g. cold-rolled 60 steel) for direct use.

High-precision, heavy-duty ball screws are mostly made of low-alloy tool steels (such as 9Mn2V, CRWMN steel) and rolling bearing steels (such as GCR15, GCR15SIMN steel), and are quenched by induction heating, and also by flame heating surface quenching or integral quenching.

Small-size ball screws are habitually made of carburized steel (such as 20crmnti steel), which is used after carburizing, quenching and low-temperature tempering.

Some high-precision ball screws that are easily deformed during heat treatment can be made of special nitriding steel (such as 38CrMoA1A steel) and used after nitriding treatment.

Ball screws working in corrosive and high-temperature environments can be made of precipitation hardening stainless steel (such as 1Cr15CO14Mo5VN, 0Cr17Ni4Cu4NB steel) and used after solution treatment and aging treatment.

The two-way lead screw is the left and right rotary lead screw, and half of the thread of the thread part of the lead screw is left-handed and half is right-handed.

If the lead screw rotates in one direction, the two nuts on the thread are separated or close to the two ends, and when the screw rotates in the opposite direction, the two nuts are close to each other or separated.

Ball screw: 1. Introduction:

Ball screws are ideal products for converting rotary motion into linear motion, liquid acacia or converting linear motion into rotary motion.

Ball screws are the most commonly used transmission elements in tool machinery and precision machinery, and their main function is to convert rotary motion into linear motion, or torque into axial repetitive force, and at the same time have the characteristics of high precision, reversibility and high efficiency. Due to their low frictional resistance, ball screws are widely used in a variety of industrial equipment and precision instruments.

The ball screw is composed of a screw, a nut, a steel ball, a pre-pressed sheet, a reverser, and a dust preventer. Its function is to convert the rotational motion into linear motion, which is a further extension and development of the Eckham screw, and the significance of this development is to change the bearing from a sliding action to a rolling action.

2. Principle. According to the national standard GB and application examples, the ball screw (which has basically replaced the trapezoidal screw, commonly known as the screw) is used to convert the rotary motion into linear motion; Or the linear motion is converted into an actuator of rotary motion, and has high transmission efficiency, accurate positioning, etc.

When the ball ruler screw is used as the active body, the nut will be converted into linear motion according to the lead of the corresponding specification with the rotation angle of the screw rod, and the passive workpiece can be connected by the nut seat and the nut, so as to achieve the corresponding linear motion.

3. Application. Ultra-high DN ball screw: high-speed machine tool, high-speed integrated machining center.

End-cap ball screws: Rapid handling systems, general industrial machinery, automated machinery.

High-speed trapped front ball screws: CNC machinery, precision machine tools, industrial machinery, electronic machinery, high-speed machinery.

Precision grinding grade ball screws: CNC machinery, precision machine tools, industrial machinery, electronic machinery, conveying machinery, aerospace industry, actuators, valve switch devices used in other antennas, etc.

Nut Rotary (R1) Series Ball Screws: Semiconductor Machinery, Industrial Robots, Woodworking Machines, Laser Processing Machines, Conveyors, etc.

Rolling grade ball screws: the advantages of low friction and smooth operation, and at the same time fast and inexpensive.

Heavy-duty ball screws: All-electric injection molding machines, stamping machines, semiconductor manufacturing equipment, heavy-duty brakes, industrial machinery, forging machines.

The use of ball screws today is very large, which can convert rotary motion into linear motion, and ball screws and ball screws have different meanings. So what is the difference between a ball screw and a ball screw, and what are the functions of a ball screw, do you understand? Now let's take a look.

1. What is the difference between a ball screw and a ball screw?

Ball screw is a "common name", mainly a name for non-professionals; The ball screw is an abbreviation, which essentially refers to a part of the object asked. In addition, the national standard name is actually a ball screw pair, which contains a ball screw, a ball nut, a rotary steel ball and a recirculating piece, so as to achieve the "slewing-thrust" conversion.

2. What are the functions of ball screws?

1. The transmission efficiency that can be achieved by the ball screw is very high, generally it can reach more than 90%, which is much greater than the transmission efficiency of ordinary screws. Moreover, in the process of production, the ball screw can use small driving power, which reduces the cost of production, and also ensures that the loss will not be too large, and greater benefits can be obtained.

2. The ball screw is completed by rolling in the working process, compared with the trapezoidal screw that relies on sliding to complete, the temperature generated in the working process is much lower, and the ball screw can be completed well even if it is a high-speed transmission task.

3. During the working period of the ball screw, the friction on the surface is relatively small, as long as the daily maintenance is reasonable and proper, then the service life of the use will be longer, and the service life of the ordinary lead screw will be much shorter than that of the ball screw.

4. It is necessary to understand a concept, that is, the self-locking property of the ball screw is inversely proportional to the transmission efficiency under normal circumstances, that is to say, the ball screw has high transmission, resulting in low self-locking, or even none, which is naturally better.

What is the difference between a ball screw and a ball screw, and what are the functions of the ball screw, I will introduce it here, do you understand? There is not much difference between a ball screw and a ball screw, but it is still necessary to distinguish and do a certain understanding.