Yuhuan CNC Machine Tool Co., Ltd.

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LK71、LK22 Series CNC External Tenon Broaching Machine

This product is a multi-axis CNC external broaching machine for tenon slots,available in both vertical and horizontal configurations.It is widely used in aerospace,marine,and nuclear power industries for broaching disc grooves,offering high precision,efficiency,and stability as a specialized tenon slot broaching solution.Used for tenon groove machining of parts made of stainless steel,high-temperature alloys,powder metallurgy high-temperature alloys,and other materials.

Keywords

Precision grinding, intelligent manufacturing technology, integrated solutions

Classification

CNC Broaching Machine Series

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Typical Machining Parts

Equipment Highlights

Technical characters

1.High rigidity and overload prevention of the cutting shaft

The main drive is composed of a spindle motor,a safety coupling,a gear reducer,a helical gear,and a helical rack.The safety coupling is set up to prevent overload,connecting the motor out put shaft and the gearbox input shaft.When the preset torque is exceeded,an alarm will be triggered and displayed on the screen.
2.High precision A-axis,B-axis(horizontal A-axis,C-axis)indexing device

High configuration:FAG/INA bearings+Heidenhain grating ruler;
High precision:Rotation positioning accuracy of 0.001°(4”);End face runout<0.02,radial runout<0.02.
3.Fully closed-loop precise control

Servo-driven with a high-rigidity mechanical structure and grating scale feedback,dynamically correcting errors to achieve flawless broaching precision.
4.24-hour non-stop processing

The machine tool has a high degree of automation,with high efficiency,high precision,and high reliability.The design of the machine tool is reasonable,with high rigidity and high dynamic responsiveness,making it easy for operators to load and unload workpieces,and also convenient for machine tool maintenance.
5.One click intelligent control

Intelligent CNC system+embedded program+highly secondary development,parameter filling and use,zero programming operation,safe and efficient.

Performance

Serial Number	TECHNICAL PARAMETER NAME	UNIT	LK7132X3900	LK7132X2750	LK2232X7300	LK2232X3200
Serial Number	TECHNICAL PARAMETER NAME	UNIT	NUMERICAL VALUE
1	Rated cutting force	kN	320	320	320	320
2	Pulling stroke	mm	3900	2750	7300	3200
3	Maximum blade length	mm	3000	2000	3000×2	2000
4	Maximum diameter of processed workpiece	mm	φ2200	φ500	φ1400	φ500
5	Maximum groove depth	mm	120	50	100	50
6	Workpiece weight	kg	5000	≤100	≤2000	≤100
7	Angle of A-axis indexing disc (stepless indexing)	0	360	360	360	360
8	Positioning accuracy of A-axis indexing mechanism	"(Arcseconds)	±10	±10	±10	±10
9	A-axis indexing mechanism repeated positioning accuracy	"(Arcseconds)	10	10	10	10
10	rotational speed	r/min	1～1.5	1～1.5	1～1.5	1～1.5
11	Pulling speed (stepless speed regulation) (Vertical Z-axis,horizontal X-axis)	m/min	0.5～60	0.5～15	0.5～25	0.5～15
12	Return speed	m/min	1～60	1～25	1～25	1～25
13	positioning accuracy	mm	0.2	0.2	0.2	0.2
14	Feed stroke (longitudinal feed direction) (Vertical Y-axis,horizontal Z-axis)	mm	420	300	420	300
15	positioning accuracy	mm	0.015	0.015	0.015	0.015
16	repeatability	mm	0.01	0.01	0.01	0.01
17	speed	m/min	2	2	2	2
18	Adjusting the stroke (Vertical X-axis,Horizontal Y-axis)	mm	±200	±120	±100	±50
19	positioning accuracy	mm	0.015	0.015	0.015	0.015
20	repeatability	mm	0.01	0.01	0.01	0.01
21	speed	m/min	2	2	2	2
22	Adjusting the tilt angle of the cradle (Vertical B-axis,horizontal C-axis)	0	-45/+45	-45/+45	-90～+45	-90～+45
23	positioning accuracy	"(Arcseconds)	10	20	20	20
24	repeatability	"(Arcseconds)	8	10	10	10
25	speed	r/min	1.8	1	1	1
26	Knife box storage device:
	cutter spacing	piece	11	8	12	6
	Number of knife boxes	piece	12	7	6	6
	Knife box length	mm	3150	2150	3150	2150
	The total length of the knife in the knife box is ≥	m	33	12	36	12
27	Main transmission servo motor power	kW	225	195	195	195
28	rotational speed	r/min	3100	3100	3100	3100
29	Rated total power (approximately)	kW	300	260	260	260
30	Mechanical quality (approximately)	t	160	120	170	100
31	Land occupation space (length x width x height) (approximately)	mm	17200×10300×10700	16000×7800×7500	17600×6800×5000	12000×6000×5500