16B20P High-precision screw-cutting lathe, universal passport, manual, diagrams, description, characteristics

Even with the advent of new methods of forming parts (combustion casting, laser and plasma cutting, etc.), metal cutting remains relevant. Its advantage is the versatility of obtaining products of different shapes. These are flat and three-dimensional bodies, figures of rotation, made on planing, milling, lathes and other metal-cutting units. They are used in industry, for servicing and repairing vehicles (cars, ships, construction and road vehicles).

It is often more profitable to use a full-size machine, which requires space for installation and a serious approach to maintenance. These inconveniences are nothing compared to its capabilities and accuracy, higher than that of a desktop or smaller version. This unit can be used for:

• Single or small-scale production of parts.
• Tool and repair production.
• Semi-finish or fine finishing only.

TIP: before choosing a model, study the recommendations of experienced specialists and reviews on specialized forums.

It is preferable to use new equipment or machines after a full restoration.

Information about the manufacturer of the screw-cutting lathe 16B20p

Manufacturer of universal lathes 16B20p - Moscow Machine Tool Plant named after. A.I. Efremova , founded in 1857.

The first universal screw-cutting lathes with a gearbox for the first time in the USSR began to be produced at the Moscow Machine Tool Building named after. A.I. Efremov in 1932 and received the names DIP-200, DIP-300, DIP-400, DIP-500 ( DIP

- Catch up and Overtake), where 200, 300, 400, 500 is the height of the centers above the frame.

As the design of the machines improved, the plant produced more and more modern models - 1A62, 1K62, 16K20, MK6056.

Machine tools produced by the Moscow Machine Tool Plant Krasny Proletary, KP

• 1A62
  - universal screw-cutting lathe, Ø 400
• 1K62
  - universal screw-cutting lathe, Ø 400
• 1K62B
  – high-precision universal screw-cutting lathe, Ø 400
• 1K282
  - eight-spindle vertical lathe, Ø 250
• 1K620
  - universal screw-cutting lathe with variator, Ø 400
• 1K625
  - lightweight screw-cutting lathe with an increased line of centers, Ø 500
• 16A20F3
  – CNC lathe, Ø 400
• 16B20P
  - high-precision screw-cutting lathe, Ø 400
• 16K20
  – universal screw-cutting lathe Ø 400
• 16K20VF1
  - universal high-precision screw-cutting lathe with digital display, Ø 400
• 16K20M
  - mechanized screw-cutting lathe, Ø 400
• 16K20P
  - high-precision screw-cutting lathe, Ø 400
• 16K20PF1
  - high-precision screw-cutting lathe with digital display, Ø 400
• 16K20F3
  - CNC lathe, Ø 400
• 16K20F3S32
  - CNC lathe, Ø 400
• 16K20T1
  - lathe with operational control, Ø 500
• 16K25
  - lightweight screw-cutting lathe with an increased line of centers, Ø 500
• 162
  — universal screw-cutting lathe, Ø 420
• 1622
  — universal screw-cutting lathe, Ø 120
• 1730
  — semi-automatic multi-cutting lathe, Ø 410
• DIP-40 (1D64)
  - universal screw-cutting lathe, Ø 800
• DIP-50 (1D65)
  - universal screw-cutting lathe, Ø 1000
• DIP-200
  – universal screw-cutting lathe, Ø 400
• DIP-300
  – universal screw-cutting lathe, Ø 630
• DIP-400
  – universal screw-cutting lathe, Ø 800
• DIP-500
  – universal screw-cutting lathe, Ø 1000
• MK6046, MK6047, MK6048
  - universal screw-cutting lathe, Ø 500
• MK6056, MK6057, MK6058
  - universal screw-cutting lathe, Ø 500
• MK-3002
  - table lathe, Ø 220

Electrical circuit diagram of a 16K20P screw-cutting lathe.

The electrical circuit diagram of the universal screw-cutting lathe 16K20P is shown in the following figure:

You can download a free electrical circuit diagram of a 16K20P screw-cutting lathe with specifications and in excellent quality from the link below:

the 16K20P screw-cutting lathe is shown in the following figure:

You can download for free this version of the electrical circuit diagram of a 16K20P screw-cutting lathe with specifications and in excellent quality from the link below:

Location of controls for screw-cutting lathe 16B20P

Location of controls for screw-cutting lathe 16B20p

List of controls for screw-cutting lathe 16B20P

1. Spindle speed setting handle
2. Spindle speed setting handle
3. Handle for setting normal and increased pitch and dividing into multi-start threads
4. Handle for setting right or left thread
5. Handle for selecting thread type and type of work (threading or feeding)
6. Feed or thread setting handle
7. Feed or thread setting handle
8. Handwheel for manual longitudinal movement of the caliper carriage
9. Lead screw nut on/off handle
10. Longitudinal feed dial clamp handwheel
11. Button for disengaging the rack and pinion gear when cutting threads
12. Caliper lateral movement handle
13. Button for turning on the mechanical movement of the upper support (cutting slide)
14. Clamp handle against turning the lead screw to move the upper support (cutting slide)
15. Upper slide (cutter slide) feed handle
16. Handle for rotating, indexing and clamping the cutting head
17. Handle for turning on, stopping and reversing the spindle
18. Mnemonic caliper group handle
19. Button for rapid movement of apron and caliper
20. Tailstock quill clamp handle
21. Tailstock clamp handle on bed guides
22. Handwheel for moving the tailstock quill
23. Lead screw activation button directly
24. Power switch
25. Button for turning on the electric motor at speed 1
26. Button for turning on the electric motor at speed II
27. Push-button station for starting and stopping the main electric motor
28. Feed and thread switch
29. Coolant pump switch
30. Main motor ammeter
31. Machine stop
32. Push
33. Left handle for turning on, stopping and reversing the spindle

List of components of the screw-cutting lathe 16B20P

1. RMC bed 1400 mm - 16B20P-010
2. RMTs bed 1000 mm - 16B20P-011
3. RMTs bed 710 mm - 16B20P-012
4. Left leg - 16B20P-013
5. Right leg - 16B20P-014
6. Spindle head - 16B20P-020 (Gamet bearing supports)
7. Gearbox - 16B20P-024
8. Tailstock - 16B20P-030
9. Caliper with mechanical feed - 16B20P-040
10. Caliper without mechanical feed - 16B20P-044 (only for a machine with RMC 1400 mm)
11. Tool holder - 16B20P-043
12. Mechanical feed carriage - 16B20P-050
13. Carriage without mechanical feed - 16B20P-051 (only for a machine with RMC 1400 mm)
14. Apron - 16B20P-060
15. Feed box - 16B20P-070
16. Gearbox - 16B20P-080
17. Setting table for replacement gears (guitar) - 16B20P-081
18. Drive cartridge - 16B20P-090
19. Adapter flange for three-jaw chuck Ø250 mm - 16B20P-095
20. Tool
21. High speed drive
22. Lead screw RMC 1400 mm - 16B20P-152
23. Lead screw RMC 1000 mm - 16B20P-153
24. Lead screw RMC 710 mm - 16B20P-154
25. Main drive pulleys - 16B20P-160 (only for a machine with RMC 710 and 1400, Nshp = 16..1600)
26. Main drive pulleys - 16B20P-161 (only for a machine with RMC 1400, Nshp = 12.5..1250)
27. Main drive pulleys - 16B20P-162 (only for the machine with Nshp = 20..2000)
28. Main drive pulleys - 16B20P-163 (only for a machine with RMC 1000, with Nshp = 16..1600)
29. Electrical equipment - 16B20P-180
30. Table of speeds and feeds - 16B20P-225 (for a machine with Nshp = 16..1600)
31. Table of speeds and feeds - 16B20P-226 (for a machine with RMC 1400, Nshp = 12.5..1250)
32. Table of speeds and feeds - 16B20P-227 (for a machine with Nshp = 20..2000)
33. Centralized lubrication - 16B20P-240
34. Cooling - 16B20P-250
35. Cooling - 16B20P-261
36. Limbs and mechanism for disabling the front propeller handle - 16B20P-52
37. Left spindle control handle - 16B20P-071

Security requirements

The 16V20P machine is certified for compliance with safety requirements. To implement safe operation measures, the manufacturer has provided:

• belt drive guard and replaceable gears, interlocked with the main movement drive control system. When the guard is open, turning on the main movement drive is impossible;
• special locking of the input switch control handle, as a result of which the electrical cabinet door can only be opened when the input switch is turned off;
• chuck guard interlocked with the main movement drive system. When the guard casing is open, it is impossible to turn on the spindle rotation.

There are also other safety measures that guarantee the safety of the operator’s work on the 16V20P machine.

Kinematic diagram of screw-cutting lathe 16B20P

Kinematic diagram of a screw-cutting lathe 16B20p

The kinematic diagram is given to understand the connections and interactions of the main elements of the machine. The numbers of teeth (g) of the gears are indicated on the callouts (the asterisk indicates the number of starts of the worm).

The number I indicates a support with mechanical movement of the cutting slide

Movement is transmitted to the spindle in the following sequence:

• Two-speed electric motor 695 / 1400 rpm. Motor speed is selected using buttons
• Flat drive gearbox
• 6 speed gearbox
• Flat drive to spindle headstock

Setting the spindle speed in the spindle head is done by handle 1, which moves blocks 18-19-21-25-26.

Structural diagram

The passport of the screw-cutting lathe 16b20p-061 describes its design. For rigidity, the machine bed is box-shaped and mounted on a base. The frame has ground guides that are hardened. Chips accumulate in a special cavity in the base. There is also an open container for coolant.

The precision bearings on which the machine spindle rests are not adjustable. At the output end of the spindle there is a flange with a fixed 3-jaw chuck.

The input end of the spindle, through a replaceable set of gears and a drive shaft or screw, transmits rotation to the feed box. It moves the support with the tool holder during turning of workpieces or making threads.

There are scales with sights on the caliper. They facilitate visual control of the movement of the slide during the cutting process. The tool holder securely fixes four cutters.

The apron is equipped with end stops with switches for confident stopping of the caliper feed mechanism. There are other locks and cutting zone guards available to guarantee safe operation of the machine.

When using a 16b20p lathe, it is important to monitor its condition - general and main structural elements. This greatly affects the accuracy of the operations performed and the surface quality of the parts. The guides of the caliper and frame require special attention.

Electrical diagram

The electrical circuit of the 16b20p-070 lathe is necessary for correct power connection when starting up the equipment, its operation and repair.

Description of the design of the screw-cutting lathe 16B20P

bed

The machine bed is cast; a rapid-speed electric motor is installed in a niche at the right end. The bed is installed on two hollow pedestals. The left one houses the main drive electric motor, the right one houses the electric cooling pump with an emulsion tank and the electric lubrication pump with a tank.

Front (spindle) headstock of screw-cutting lathe 16B20P

The position of the spindle axis relative to the frame guides is adjusted using set screws.

The spindle head contains:

• Pitch increasing link with gear ratios 1:1, 1:4, 1:16
• Spindle unit
• Gear mechanism for cutting right-hand and left-hand threads

The spindle assembly is mounted on special cone-roller bearings of the Gamet type (Gamet Bearings is an English manufacturer of precision bearings for equipment).

The gearbox for 6 spindle revolutions is removed from the spindle head and is mounted inside the left cabinet of the machine.

The gearbox contains:

• Gear mechanism (reducer)
• Starting and braking electromagnetic clutches
• Selective gearbox control mechanism

Main movement mechanism of screw-cutting lathe 16B20p

Gearbox

The feed box is mounted on the left side of the frame.

The feed box mechanism with replaceable guitar gears makes it possible to cut the entire main series of threads provided for by GOST.

Using the pitch increasing link, you can obtain threads with a pitch increased by 4 and 16 times

When specially tuning a guitar, small threads are cut in increments of 0.2 mm.

Feed selection is made by three handles mounted on the box.

1. The left handle (6) selects a thread from the main row
2. The right handle (7) moves the gear wheels of the multiplying mechanism
3. The middle handle (5) selects the type of threads and work

An overrunning clutch is mounted on the right side of the box to obtain accelerated movements of the carriage and caliper.

Feed mechanism of screw-cutting lathe 16B20p

Setting up a 16B20p machine for cutting threads (table of threads)

Apron

The apron is equipped with four fine-toothed couplings that provide forward and reverse movement of the carriage and support in forward and reverse directions

The movements of the carriage and the lower part of the support are controlled by a mnemonic handle.

When working against stops or accidental overloads, the safety device of the apron, directly acting on the control mechanism, moves the fine-toothed clutches to the neutral position.

The ball locking device prevents the simultaneous activation of the uterine nut and longitudinal and transverse movements.

Caliper

The cross-design support has manual and mechanical longitudinal movement along the frame guides (carriage) and transverse movement along the carriage guides.

The upper support with a tool holder also has mechanical movement for turning short cones (the length of the cone generatrix is ​​no more than 140 mm.

Operating instructions for lathe 16b20p-061

The operating instructions are necessary for lathe workers, specialists in adjustment, maintenance and repair of machine equipment, process engineers developing metal cutting processes, and standard adjusters involved in detailing the operations performed. The instructions should facilitate the correct operation of the machines and help performers master their most effective use. The document contains information about the design of the equipment, its installation, power supply connection and the first commissioning of the machine.

Technical characteristics of the lathe 16B20P

* the price of a restored machine is indicated (since these machine models are no longer produced)