The thread rolling machine is a multi-functional cold rolling forming machine tool. The thread rolling machine can roll the workpiece under the cold condition within its rolling pressure range. Straight tooth, helical tooth and oblique spline gear rolling Rolling; straightening, diameter reduction, rolling and various forming rolling. The machine has a safe and reliable electric-hydraulic execution and control system, which allows each working cycle to be selected from manual, semi-automatic and automatic modes.

Different industries have different production equipment, and their models are also different. Today, we will come to science popularization. What are the specific differences between "two-axis" and "three-axis" in the rolling machine industry, and how do they distinguish it? If it is to distinguish the style of the thread rolling machine, it is very simple. They can be distinguished from their appearance alone. "Two-axis" means a thread rolling machine with two wheels as supporting points; "Three-axis" means three wheels as supporting points, which can be said to be clear at a glance! The shape is easy to distinguish, but their functions are different. Although they are all thread rolling machines, the three-axis thread rolling machine mainly focuses on the processing of "hollow tubes", mainly rolling thin-walled tubes in a triangular manner. This type of workpiece can well prevent the problem of the center of gravity of the workpiece being squeezed. "Two-axis" is mainly for the processing of solid pipes, whether it is a large steel pipe or a small steel pipe, as long as you choose the right model. Choose the lower model for small workpiece processing, and choose the higher model for large workpiece processing.

1. Check whether the mechanical performance is good, the working table and the bending machine table are kept level; and prepare various mandrel tool blocks. 2. Install the mandrel, forming shaft, iron stop shaft or variable block according to the diameter of the processed steel bar and the requirements of the bending machine. The diameter of the mandrel should be 2.5 times the diameter of the steel bar. 3. Check the mandrel, the stopper, and the turntable should be free from damage and cracks. The protective cover should be fastened and reliable. The operation can only be performed after the empty machine is running. 4. During operation, insert one end of the steel bar into the gap provided by the turntable, and fix the other end against the machine body and press it by hand. Check that the machine body is fixed. is indeed installed on the side that blocks the steel bar before starting. 5. It is strictly forbidden to replace the mandrel, change the angle, and adjust the speed during the operation, and do not add oil or remove it. 6. When bending steel bars, it is strictly forbidden to process the steel bar diameter, the number of roots and the mechanical speed exceeding the mechanical regulations. 7. When bending high-hardness or low-alloy steel bars, the maximum restricted diameter should be changed according to the mechanical nameplate, and the corresponding mandrel should be exchanged. 8. It is strictly

The steel bar bending machine belongs to an improvement of the structure of the steel bar bending machine. The utility model includes a reducer, a large gear, a small gear, and a curved disk surface, and is characterized in that in the structure: a two-stage brake motor is directly connected with the reducer for a first-stage reduction; a small gear meshes with a large gear for a second-stage reduction; a large gear The curved disk surface is always driven to rotate; the curved disk surface is provided with a central shaft hole and a plurality of bending shaft holes; and the positioning square bars of the working table surface are respectively provided with a plurality of positioning shaft holes. Because the dual-stage brake motor is directly connected with the reducer for one-stage deceleration, the ratio of input and output revolutions is accurate, the bending speed is stable and accurate, and the speed can be automatically controlled by electricity, and the brake can ensure the bending angle. Use the forward and reverse rotation of the motor to bend the steel bars in both directions. The central shaft can be replaced for easy maintenance. Intelligent control can be used.

A concrete delivery pump has the following main technical parameters: delivery capacity, outlet pressure, motor power and distribution valve form. According to the new national standards, these main parameters can be obtained from the model of the concrete pump. The following takes Changsha Tuowo Concrete Pump "HBT60-16-110S" concrete pump as an example to illustrate its representative significance HB-the Chinese Pinyin abbreviation of concrete pump T-drag S-the distribution valve is an S-shaped swing tube valve 60--Maximum conveying capacity, m3/h 16----The maximum pressure at the outlet of the concrete pump, MPa 110--Motor power, kW According to the marked outlet pressure level, it is divided into low pressure pump (≤5MPa), medium pressure pump (6-10MPs) and high pressure pump (>10MPa); according to the maximum delivery volume per hour, there are 20-100m3 ranging from and large Most concrete pumps can realize two-stage variable displacement or stepless variable. The user should choose the outlet pressure according to the actual needs of the project and the height of the conveying distance; choose the range of the output volume according to the mixing and feeding capacity; choose the type of distribution valve according to the aggregate condition of the pumped concrete. The S-shaped swing pipe valve has less pressure loss during the pumping process, and the concrete flow path is smooth, but due to the limitation of t

Large-scale concrete conveying equipment is used for concrete conveying of large-scale concrete projects such as high-rise buildings, high speeds, and overpasses. Composed of pump body and delivery pipe. According to the structure, it is divided into piston type, extrusion type and hydraulic diaphragm type. The pump body is installed on the chassis of the car, and then equipped with a retractable or flexural spreader boom to form a pump truck. Type: According to the structure and purpose, it is divided into trailer concrete pump, vehicle pump and pump truck. According to the power type, it is divided into electric concrete pump and diesel-powered concrete pump.

Concrete pump, also known as concrete pump, is a machine that uses pressure to continuously convey concrete along a pipeline. It consists of a pump body and a conveying pipe. It is mainly used in building, bridge and tunnel construction. Concrete pumps are divided into gate valve concrete pumps and S valve concrete pumps. In addition, there is a pump body mounted on the chassis of the car, equipped with a retractable or flexural placing boom to form a pump truck.

The rolling wheel must be adjusted synchronously, that is, adjusting the indentation of the L and R wheels on the surface of the workpiece to coincide. If the synchronization adjustment is not accurate, it will cause the workpiece to have chaotic teeth, chipping and out-of-tolerance. The center height of the workpiece is consistent with the center height of the rolling wheel (allowable 0.01~0.08mm). The commonly used adjustment methods are: After the rolling wheel is worn out, the teeth can be ground to reduce the number of teeth. The parameters are calculated again according to the aforementioned process, and the teeth are re-opened to produce a refurbished rolling wheel, which can be refurbished multiple times within the allowable range of the machine center distance.

The principle of cold-rolling small-module involute splines on a rolling machine. L and R are a pair of involute rolling wheels with the same parameters, which are respectively installed on the two main shafts of the thread rolling machine, and can rotate synchronously in the same direction under the drive of the transmission mechanism. The R wheel can be driven by an oil cylinder for radial feed movement, and the L wheel can be adjusted by the adjustment mechanism to coincide with the indentation of the R wheel on the surface of the workpiece P. Workpiece P is positioned and clamped by two center holes. Adjusting the fixture can make the work piece move axially. When force is applied, it can swing a Φ angle around the axis parallel to the machine tool spindle through O point on the fixture to ensure that the work piece is always in the cold rolling process. Keep the two rolling wheels in a free anti-rolling state, and at the same time facilitate the clamping of the workpiece. The structural dimensions, shape and position tolerances and technical requirements of the rolling wheel are formulated with reference to the rolling wheel and cylindrical measuring gear. The common normal length or span M of the rolling wheel is calculated according to the spline data in the gear work. The required material can be Cr12MoV. (Hardness 59~62HRC).