STD-120M is a wood lathe designed for processing small-sized elements from different types of wood. The unit has advantageous features that distinguish it from its predecessor, consisting in the fact that critical working areas are protected by a fence and equipped with local lighting. In addition, the main electrical circuit has been modernized, a system for reducing vibration and noise levels has been provided, and an installation for removing dust and chips by mechanization has been developed.
Destination
The STD-120M school turning machine is used for light woodworking through central interaction, using a faceplate and a chuck, as well as for elementary drilling. Its functionality includes the following:
- Sharpening of cylindrical and profile rotating elements.
- Ability to trim, round and cut workpieces at different angles.
- Perform turning on the marked profile.
- Drilling.
- Machining flat surfaces of diameter in decorative and profile terms using a faceplate.
STD-120M is put into operation by starting the electric power plant. Motorlocated on the left side of the unit. Torque is transmitted through belt interaction. This process is facilitated by a pair of pulleys: the first is mounted on the motor shaft, the second is mounted on the headstock spindle.
Arrangement
STD-120M machine has some features of the device, namely:
- The speed mode of rotation is converted by throwing the belt over certain grooves of the shafts.
- The control unit with buttons is located on the headstock, which provides the most convenient access to control during operation.
- Spindle style bits are interchangeable and included as standard equipment.
- The work area is protected by additional curtains with transparent windows.
- Remove shavings and other debris with the optionally connected cleaning unit.
Increase the accuracy of the operations carried out by special lighting, the operation of which is controlled by a step-down transformer. Electrical interlocking of the belt drive design with switch increases operational safety.
Front headstock of the unit
This unit of the STD-120M turning unit is used for mounting and fixing the workpiece with subsequent transfer of torque to it. This element consists of a one-piece cast iron body of an open type. It has a pair of holes bored along the axes that serve to accommodate radial, spherically made bearings.
The work spindle is a shaped steel shaft,having a thread on the right for mounting a chuck, washer and other special attachments that fix and process the workpiece. At the left end there is a two-stage pulley-type drive, activated by means of a V-belt drive from an electric motor. On both sides of the headstock there are hatches with felt padding. The spindle is started and stopped using a control unit located on the body.
Rear element
This part of the STD-120M machine provides support when servicing long products, as well as fixing the chuck, drills directly and other tools. The rear element of the device consists of a frame and a quill sliding along the guide grooves of the body.
From one side of the movable sleeve there is a hole adjusted to the cone, where the back stop, chuck or drill with the corresponding end switch is placed. From the opposite side, a bushing having an internal thread is inserted by pressing. The set screw allows easy movement of the quill and prevents it from rotating around its own axis.
The torque redistribution element is combined with a threaded bushing, on one end of which a flywheel is installed, fixed with a nut. The quill is fastened in the required position with a clamping handle. The tailstock is fixed with a nut, a cracker (washer) and a bolt. Special holes are provided in the body for lubrication of working elements.
Main and detachable attachments
The machine for wood STD-120M is equipped with several basic elements, namely:
- A trident used to secure the workpiece. It has a cone shape at one end, identical to the spindle. The second edge of the element is made in the form of a fork with three prongs. The workpiece is fixed by placing the intended groove directly into the trident, after which the second end is clamped into the tailstock quill.
- A cup chuck, which is a part that has a cylindrical interior on one side, and a tapered shank on the other, which is used for installation in the spindle part of the front headstock. The round side of the workpiece is tightly placed in the cartridge cavity or clamped with bolts.
- If the workpiece has a multifaceted shape, a vice chuck is used.
- In addition, the STD-120M lathe can be equipped with chucks with three or four jaws. They serve to fasten parts to the outer part. Self-centering elements have independent cam movement for faster and more efficient machining.
Electrical Equipment and Specifications
Regarding the electrical equipment of the turning unit, it can be noted that there is a connection to an AC network with three phases (380 V) with a neutral that is tightly grounded. There is also a lighting transformer in the switch cabinet.
Technical characteristics of the machine are shown in the table:
Nameunit |
Wood lathe STD-120M |
| Height of centers (cm) | 12 |
| Maximum length of part machined in centers (cm) | 50 |
| Maximum workpiece diameter (cm) | 19 |
| Maximum turning length (cm) | 45 |
| Spindle revolutions per minute | 2 |
| Frequency (rpm) | 2350/ 2050 |
| Power supply (V/Hz) | 380/50 |
| Number of electric motors | one |
| Rated motor power (W) | 400 |
| Length/width/height of unit (cm) | 125/57, 5/55 |
| Weight (kg) | 100 |
Performance Features
The STD-120M wood lathe does not belong to the category of professional equipment, its main purpose is to familiarize students with the basics of a turner. He is subject to increased security measures.
To ensure the stability of the processing tool, it is better to make the base steel or concrete. Its height must be at least 60 centimeters.
In addition, there are someoperational features:
- The wood blank should be free of cracks and knots.
- Moisture of the part is allowed no higher than 20 percent.
- Large items must be processed at minimum speed.
- At least once a year or after five hundred hours of operation, lubricate moving parts, check equipment for deformation and malfunctions.
Before carrying out repair work and maintenance of the machine, you should study its device, as well as read the instruction manual in detail.
Conclusion
The turning unit under consideration is designed for processing wooden blanks and drilling holes. Its main purpose is home use, training of beginners and schoolchildren. When operating the equipment, you must observe the precautions and follow the recommendations specified in the instructions.
