Pipe-cutting machines belong to the class of turning equipment. They are designed to process pipes and joints. If necessary, the unit can be used for cutting various types of threads. The scope of the device is distributed on an industrial and private scale. A wide range of such devices is presented on the domestic market. Consider some types of machines, their features and capabilities.
Operating principle
Pipe-cutting machines operate according to a simple scheme: the workpiece is passed through the spindle and clamped by a pair of cartridges. Then the pipe begins to rotate, its second end is inserted into the rest, where the necessary processing of the product takes place.
The unit is powered by electrical energy, can have both automatic and mechanical control. Since the spindle diameter has a significant run up in size, the device is able to process pipes of various diameters, including water and oil and gas pipelines.
Some machines in this category are equipped with a CNC system (numerical program control), which allows you to perform most turning operations in automatic mode. The equipment may include an additional system of dies for threading, as well as heads and mobile stands. Such a wide range of devices allows for several operations with minimal labor and time.
Criterias of choice
When choosing the toolkit in question, it is necessary to take into account several main factors:
- Spindle bore diameter.
- The presence of a turret or its analogues.
- The distance between the work centers.
- The presence of a semi-automatic mode when threading.
- The indicator of the strength and rigidity of the frame.
CNC models
These pipe-threading machines are designed for cutting inch, conical, triangular and other types of thread. The main beds are protected by heating and grinding. This, combined with the reliability of the main components, guarantees a long service life without loss of accuracy parameter. Cutting of the defective edge of the pipe, as well as cutting the desired thread format, is performed automatically.
The following are the characteristics of the STC4100 and 1835 CNC systems. The performance of the second model is shown in brackets:
- The height indicator from the center of the spindle to the guide elements is 45 (317) cm.
- The outer diameter of the cartridge used is 114-340 (60-180) mm.
- The maximum processing length of an element is 1 (0.35) m.
- Spindle speed - 310 (306) revolutions per minute.
- The power of the main motor is 18.5 (11) kW.
- Turret - vertical four-position type.
- Types of electric / hydraulic / pneumatic chuck - standard.
- Processing accuracy - standard IT-7 / IT-7.
- Mass - 9 (6) tons.
- Dimensions - 3.78 / 2.08 / 2.02 (3.07 / 1.69 / 1.74) m.
- The tailstock in diameter is 100 millimeters with the possibility of moving up to 250 mm.
ST-832.8
These pipe-cutting machines are oriented on turning of pipes and their joints. The diameter of the product should not exceed 210 mm. The final product is mainly used in the oil and gas sector. The maximum length of the machined structure is six meters. The devices are equipped with a cone-type ruler and a pair of lunettes with pintles.
The following are the technical plan parameters for this series:
- Center height - 41.7 cm.
- The diameters of processing over the bed, support and recess - 83/51/100 cm.
- The width of the skeleton is 56 cm.
- The spindle diameter is 21 cm.
- The maximum speed is 400 rotations per minute.
- The number of feeds when threading is 160.
- Thread steps (modular / inch / diametral / millimeter) - 37.5 / 64/240/150 mm.
- Moving the transverse / longitudinal slide - 51/25 cm.
- The tailstock is equipped with pintles with a diameter of 125 millimeters, the stroke of which is 265 mm.
- Length / width / height - 4 / 1.74 / 1.84 m.
- Power - pump, main motor and lubrication engine. The power of the main drive is 18.5 kW.
Pipe-cutting machine 1A983
Devices of this modification are designed to process the edges of pipes and identical joints. Below are the characteristics of this device:
- The diameters of the workpiece are from 73 to 299 millimeters.
- Similar indicators above the bed and support - 800/450 mm.
- The maximum cross section of the incisors is 32 * 32 mm.
- The number of device positions is 4 values.
- The length of the workpiece for turning taking into account the cone line is not more than 420 mm
- The longitudinal / transverse movement of the caliper is 500/800 mm.
- Spindle speed - up to 355 revolutions per minute.
- Number of speeds - 12.
- Thread steps (metric / inch) - from 1 to 28 millimeters.
- The angle of rotation of the cone line is up to 10 degrees.
- The power of the electric motor is 16 kW.
- Length / width / height - 3.6 / 1.9 / 1.5 m.
- The maximum weight is 9.2 tons.
Modification 1H983
Pipe-cutting machines, the characteristics of which are given below, are used for turning pipe ends and threading in a single production environment. Equipment Parameters:
- The diameter of the machined structure is from 73 to 299 mm.
- The maximum length of the value is up to 800 mm.
- The speed is 355 rotations per minute with 12 spindle speeds.
- The maximum mass of the device is 9100 kilograms.
The remaining characteristics of the equipment are almost identical to the type 1A983 machine considered above.
STC-1535 and STC-1450 devices
The following are the parameters of the STC-1535 pipe threading machine (in parentheses are the values for the STC-1450 model):
- CNC system - Fanuc Oi-TC / Fanuc Oi-TC.
- The height from the center of the spindle to the guide elements is 315 (420) mm.
- The outer diameter of the workpieces being processed is 156 (140) mm.
- The maximum pipe length is 203 (500) mm.
- The power rating of the main motor is 15 (54) kW.
- The spindle speed is 660 (906) rpm.
- Type of cartridge - overturned (standard).
- Turret - vertical with four ranges (analogue with 8 positions).
- The standard for product accuracy is IT7 (IT6).
- The mass of the device is 6 (15) tons.
- Length / width / height - 3.24 / 1.66 / 1.7 (5.1 / 2.36 / 2.1) meters.
REMS Tornado 2010
These special machines have a fixed skeleton and a rotating mechanism for the workpiece. The robust construction of the tool is optimally suited for use on various construction sites. Compactness and light weight (50 kg) provide good transportability and simplify the maintenance of the device. The package includes a capacious chip tray, as well as an adjustable stand for height.
The manufacturer has provided two modifications of the industrial equipment in question:
- The mobile variation is equipped with three legs, has a large oil bath and a reservoir for waste material.
- Model with integrated oil and chip tray. It is designed for use on a workbench.
The powerful and high-speed drive of the unit in question allows you to thread 2 inches in 15 seconds.
Device
REMS pipe-threading machines are equipped with several types of engines. Among them:
- Universal motor with a power of 1.7 kW. It is protected against overloads, has a spindle speed of 53 rotations per minute.
- The power unit is a capacitor type. It is equipped with a polarity regulator, has a power of 2.1 kW, a couple of operating modes and a very quiet stroke. The spindle speed is from 26 to 52 revolutions per minute.
- Three-phase motor with polarity switching to 2 kW. There is a pedal to protect the inclusion of an automatic cartridge. In addition, there are two modes of operation.
A feature of this machine is the presence of two automatic cartridges with quick clamp. This allows you to accurately and quickly fix and process the workpiece without slipping the pipe.
Total
Most self-centering pipe cutting machines are equipped with reliable frames made of durable steel, a special handle for feeding the spindle, and a cutting disc, which is designed for a long period of operation. In addition, such devices allow cutting various threads without special costs. When choosing a device, pay attention to its performance. It is also worth considering the power and versatility of the unit and its main purpose directly. If the machine is required for industrial use, it is better to pay attention to powerful and multifunctional models, and for use in the private sector, an easy mobile modification is perfect.