Information

Introducing the first Sliding Headstock Type CNC Automatic Lathe Cincom L32XII model with an ATC (automatic tool changer)!
- Reducing downtime and contributing to high-variety, low-volume manufacturing -

December 21, 2020
Citizen Machinery Co., Ltd.

Citizen Machinery Co., Ltd. (Headquarters: Miyota-machi, Kitasaku-gun, Nagano-ken, President: Keiichi Nakajima) will release the Cincom L32XII model with an ATC (automatic tool changer), a sliding headstock type CNC automatic lathe Cincom L32XII model with an ATC which allows automatic replacement of the B axis tool used for various slant machining in April 2021.

The new product will be exhibited at the CITIZEN MACHINERY ONLINE PRIVATE SHOW 2021 starting on February 3, 2021.
ATC is equipped on a machine with a maximum machining diameter of 32 mm (optional 38 mm) for the first time and will be rolled out mainly in Japan as well as North America, as a machine which allows combined and complex machining, reduction in downtime, and high-variety, low-volume production.

Cincom L32XII model
Sliding Headstock Type CNC Automatic Lathe Cincom L32XII model with an ATC
Launch date: April 2021
Planned monthly production: 4 units

Many of our customers have been looking for a combined machining model with a maximum machining diameter of 32 mm, which would allow more efficient machining of precision machinery parts, such as milling used for the machining of flat and curved surfaces on materials using rotating tools that have previously been done with a machining center. To meet these needs, we have developed an ATC which supports the Cincom L32XII model based on the technology we have cultivated through the Cincom L20XII model with ATC that was launched in 2020.

With the automatic replacement of the B axis tool which performs slant machining, more combined and complex machining will be supported. Furthermore, as the tool is passed on directly from the tool magazine located in the cutting room to the ATC spindle, tool replacement can be done in only four seconds, without stopping the machine.

With ATC, 13 pieces of B axis tools can be set as one setup; therefore, in addition to complex parts machining such as implants and other medical parts, multiple parts can be machined continuously in one setup, reducing the downtime and contributing to high-variety, low-volume manufacturing.

L32 ATC Part

L32 ATC Part

Furthermore, through the optional combined use with LFV (low-frequency vibration cutting) technology (hereafter LFV technology), various issues relating to chips can be solved and further automated, labor-saving operation is made possible.

Specification items

Maximum ATC spindle rotation speed 12,000min-1
Motor output 2.2KW
Tool holder type JBS-15T
Number of B axis tools 12 pieces (magazine part) + 1 piece (built in)
Total number of tools to be mounted on main unit Max. 34 pieces (including B axis tools)
Tool replacement duration(chip to chip) 4.0sec
Maximum outer diameter of tools ø30mm
Maximum grip diameter ø10mm(ER16)

Main features of the ATC (automatic tool changer)

1. Combined and complex machining is possible

13 pieces of B axis tools can be set in one setup, enabling a wide variety of machining.

2. Reducing downtime and contributing to high-variety, low-volume manufacturing

As multiple parts can be machined continuously in one setup, this reduces downtime and contributes to high-variety, low-volume manufacturing.

Main machining work

Precision equipment parts, medical instrument parts, electronic equipment parts, automobile-related parts, etc.

Reference: LFV technology

LFV technology is a unique Citizen control technology which breaks up the chips by vibrating the servo axis in the cutting direction and providing “air-cutting” time where the tool does not touch the material. As a result, this achieves solutions to various issues regarding chips, which has been a challenge for many years in the cutting process, such as improvements in the efficiency of small-diameter, deep-hole machining and fine cutting of chips produced when working with difficult-to-cut materials where the resulting chips have tended to be quite long. In addition, this technology achieves machining with high precision for an extended period of time by dramatically reducing the chip volume and preventing defects on the workpiece surface.

Differences in the shape of chips with the same weight

Differences in the shape of chips with the same weight
(material: SUS304)
Left: chips from conventional cutting
Right: chips from LFV technology

LFV is a registered trademark of Citizen Watch Co., Ltd.

Reference material: Cincom L32

The sliding headstock type CNC automatic lathe Cincom L32 is the best-selling model with the latest modular design which enables various combinations of optimal features based on your machining needs.

Main Features of L32

1. Achieving the optimal specifications through the introduction of modular design

Function modules which can be combined and a wide range of tooling
VIII IX X XII
B axis (gang rotary tool)
Y2 axis (back tool post Y axis)
Opposite tool post rotary tool OP OP OP OP
Back tool post rotary tool OP OP

2.Flexible support from simple to complex machining

[L32XII model operation axis diagram (with B axis, Y2 axis)] The XII model is equipped with B axis on the gang tool post and Y2 axis on the back tool post.

3. Easy switching between the guide-bushing method and the guide-bushing-less method, reducing running costs

Machine Specifications

Item L32 VIII L32 IX L32 X L32 XII
Maximum machining diameter ø32mm
Maximum machining length GB machine 320mm/chuck
GBL machine Workpiece diameterx2.5/chuck
Spindle speed Max.8,000min-1
Maximum chuck diameter of back spindle ø32mm
Back spindle speed Max.8,000min-1
Rapid feed rate X1 axis 32m/min
X2 axis 32m/min
Y1 axis 32m/min
Y2 axis - 24m/min
Z1 axis 32m/min
Z2 axis 32m/min
Number of tools to be mounted Max.30 Max.36 Max.44 Max.40
Tool size Turning tool □16mm
Motors For spindle drive 3.7/7.5kW
For tool spindle drive(gang rotary tool post) 1.0kW
For back spindle drive 2.2/3.7kW
For spindle drive of opposed tool post 1.0kW Note) Optional feature to all types
For spindle drive of back tool post OP 1.0kW
Weight 2,850kg 2,900kg
L32 VIII
Maximum machining diamete
ø32mm
Maximum machining length [GB machine]
320mm/chuck
Maximum machining length [GBL machine]
Workpiece diameterx2.5/chuck
Spindle speed
Max.8,000min-1
Maximum chuck diameter of back spindle
ø32mm
Back spindle speed
Max.8,000min-1
Rapid feed rate [X1 axis]
32m/min
Rapid feed rate [X2 axis]
32m/min
Rapid feed rate [Y1 axis]
32m/min
Rapid feed rate [Y2 axis]
-
Rapid feed rate [Z1 axis]
32m/min
Rapid feed rate [Z2 axis]
32m/min
Number of tools to be mounted
Max.30
Tool size [Turning tool]
□16mm
Motors [For spindle drive]
3.7/7.5kW
Motors [For tool spindle drive(gang rotary tool post)]
1.0kW
Motors [For back spindle drive]
2.2/3.7kW
Motors [For spindle drive of opposed tool post]
1.0kW Note) Optional feature to all types
Motors [For spindle drive of back tool post]
OP
Weight
2,850kg
L32 IX
Maximum machining diamete
ø32mm
Maximum machining length [GB machine]
320mm/chuck
Maximum machining length [GBL machine]
Workpiece diameterx2.5/chuck
Spindle speed
Max.8,000min-1
Maximum chuck diameter of back spindle
ø32mm
Back spindle speed
Max.8,000min-1
Rapid feed rate [X1 axis]
32m/min
Rapid feed rate [X2 axis]
32m/min
Rapid feed rate [Y1 axis]
32m/min
Rapid feed rate [Y2 axis]
-
Rapid feed rate [Z1 axis]
32m/min
Rapid feed rate [Z2 axis]
32m/min
Number of tools to be mounted
Max.36
Tool size [Turning tool]
□16mm
Motors [For spindle drive]
3.7/7.5kW
Motors [For tool spindle drive(gang rotary tool post)]
1.0kW
Motors [For back spindle drive]
2.2/3.7kW
Motors [For spindle drive of opposed tool post]
1.0kW Note) Optional feature to all types
Motors [For spindle drive of back tool post]
OP
Weight
2,850kg
L32 X
Maximum machining diamete
ø32mm
Maximum machining length [GB machine]
320mm/chuck
Maximum machining length [GBL machine]
Workpiece diameterx2.5/chuck
Spindle speed
Max.8,000min-1
Maximum chuck diameter of back spindle
ø32mm
Back spindle speed
Max.8,000min-1
Rapid feed rate [X1 axis]
32m/min
Rapid feed rate [X2 axis]
32m/min
Rapid feed rate [Y1 axis]
32m/min
Rapid feed rate [Y2 axis]
24m/min
Rapid feed rate [Z1 axis]
32m/min
Rapid feed rate [Z2 axis]
32m/min
Number of tools to be mounted
Max.44
Tool size [Turning tool]
□16mm
Motors [For spindle drive]
3.7/7.5kW
Motors [For tool spindle drive(gang rotary tool post)]
1.0kW
Motors [For back spindle drive]
2.2/3.7kW
Motors [For spindle drive of opposed tool post]
1.0kW Note) Optional feature to all types
Motors [For spindle drive of back tool post]
1.0kW
Weight
2,900kg
L32 XII
Maximum machining diamete
ø32mm
Maximum machining length [GB machine]
320mm/chuck
Maximum machining length [GBL machine]
Workpiece diameterx2.5/chuck
Spindle speed
Max.8,000min-1
Maximum chuck diameter of back spindle
ø32mm
Back spindle speed
Max.8,000min-1
Rapid feed rate [X1 axis]
32m/min
Rapid feed rate [X2 axis]
32m/min
Rapid feed rate [Y1 axis]
32m/min
Rapid feed rate [Y2 axis]
24m/min
Rapid feed rate [Z1 axis]
32m/min
Rapid feed rate [Z2 axis]
32m/min
Number of tools to be mounted
Max.40
Tool size [Turning tool]
□16mm
Motors [For spindle drive]
3.7/7.5kW
Motors [For tool spindle drive(gang rotary tool post)]
1.0kW
Motors [For back spindle drive]
2.2/3.7kW
Motors [For spindle drive of opposed tool post]
1.0kW Note) Optional feature to all types
Motors [For spindle drive of back tool post]
1.0kW
Weight
2,900kg
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