CNC Hydraulic External Tenon Broaching Machine

The Machine is specifically designed for machining dovetail slot disks of various types. It features a high-precision CNC rotary disc that adapts to different workpiece configurations, slot numbers, and profiles, offering unique advantages. Its superiority is particularly evident in applications requiring high precision and efficiency.

Machine Introduce

Machining Object

Workpiece Type: External Tenon
Material: Titanium Alloy, Heat-Resistant Steel, and Alloys
Workpiece Dimensions & Requirements:
Size: Φ350 mm × 210 mm
Weight: 50 kg
Surface Roughness: Ra ≤ 0.8 μm (minimum)
1.4 Workpiece Change Method: Manual

Technical Standards

Compliance with ISO Standards and VDI/DGQ 3441 Precision Standards.
All equipment components, instruments, and measurement units shall adhere to the International System of Units (SI).

Process Requirements

Workpiece Fixturing: Positioning and clamping methods must align with the Buyer’s technical specifications and requirements.

Machine Operating Cycle

Manual loading → Fixture clamping → Cycle start
Rotary table locking → Y-axis moving table positions the rotary disc to broaching position
Y-axis mechanical locking → Broaching operation
Z-axis hydraulic release → Z-axis retracts to tool clearance position
Brush chips → Tool returns → Clear chip path
Release rotary table lock → Servo motor rotates the rotary disc/workpiece by one tooth
Lock rotary table → Return Z-axis to broaching position
Repeat cycle until full-circle machining is completed.

Machine Installation

Type: Floor-mounted installation,Operating Height: 1278 mm

Machine Structure and Function

Key Features

Horizontal Structure: The machine adopts a horizontal layout, ensuring rational design, convenient operation, and maintenance.
Cost-Effectiveness: Designed for affordability while maintaining performance.
Fully Automated Cycle: Achieves fully automated processing of a single workpiece in one cycle.

Main Structure

Machine Bed
Column
Main Sliding Plate
Hydraulic System
Automatic Chip Brushing System
CNC Moving Tool Clearance Mechanism
Combined Broaching Tool
Lubrication System
Cooling System
Chip Conveyor
Electrical Control Cabinet

Machine Bed

The bed is a hexahedral welded steel structure with heat-treated hardened steel guide rails.
The main hydraulic cylinder (horizontally mounted at the center of the bedplate’s tail end) drives the main sliding plate via its piston rod.
The main sliding plate is equipped with a combined broaching tool, enabling reciprocating motion along the guide rails for broaching and return actions.
The long stroke of the main sliding plate significantly improves broaching accuracy and stability.
The machine body utilizes rational welded structures with multiple aging treatments to ensure dimensional stability and precision under high rigidity conditions.
Precision Control: The integration of CNC systems and hardened steel components ensures precision.

Machine Configuration

No.	ITEM	Brand		Remark
1.Mechanical part
1	Bed, column		√
2	Main slide		√
3	CNC moving station and C-type station		√
4	Main cylinder (effective stroke L=1600mm)		√
5	Tool box		√
6	Broach brush mechanism	NSK	√
8	Lead screw assembly	THK/I+F	√
9	Reduction gear	NEUGART	√
10	Servo motor	SIEMENS 1FT7	√
11	bearing	NSK	√
2.Hydraulic part
12	Hydraulic system		√
13	Variable piston pumps and valves	Japan Yuken	√
14	Hydraulic station (Tank assembly drawing)		√
15	Pneumatic system	SMC	√
3.Electrical part
16	CNC control system	SIEMENS SINUMERIK ONE	√
17	Contactors, relays	Siemens/Schneider	√
18	Electrical control cabinet		√
19	Travel switch	Euchner	√
4.Other parts
20	Cooling pump		√
21	Automatic chip removal and filtration system		√	50μm
22	Lubrication system		√
23	Integral protection		√
5. Special accessories
24	Broach tool		√	Optional
25	Tool box accessories (gaskets, tool presses)		√	Optional
26	Adjusting pad (1 set)		√
27	Fragile seals (1 set)		√

Machine Parameter

No.	Item	Unit
1	Rated pulling force of X axis	kN	250
2	Rated stroke of X axis	mm	1600
3	X-axis working speed (stepless)	m/min	1.5～12
4	X-axis return speed (stepless)	m/min	20
5	Y-axis sliding left and right travel	mm	175
6	Y-axis working speed (stepless)	m/min	3
7	Y-axis return speed (stepless)	m/min	3
8	Z-axis slide up and down travel	mm	720
9	Z-axis working speed (stepless)	m/min	3
10	Z-axis return speed (stepless)	m/min	3
11	C axis rotation Angle	°	60
11	Tool loading length	mm	1200
12	Height from ground to broach base	mm	1063
13	Axial piston pump for main drive		A3H180-FR14K
13-1	displacement	mL/r	180
13-2	Maximum working pressure	MPa	16
13-3	Rated working pressure	MPa	11
14	Axial vane pump for auxiliary drive		SVPF-40-70
14-1	displacement	mL/r	22
14-2	Maximum working pressure	MPa	6
14-3	Rated working pressure	MPa	4
15	Main drive motor		Y225M-4-B35
15-1	Motor Power	kW	45
15-2	Motor speed	rpm	1470
16	Servo motor 1FT Series (Siemens)	Nm	12
17	Reduction ratio of planetary reducer		1:5
16	Angle encoder: RCN5000	μm	±2.5
17	Machine weight	Ton	40
18	Machine size (length × width × height)	mm	7000×3500×2500mm

Machine Accuracy

Axis	Item	Positioning Accuracy	Repeat positioning accuracy	Remarks
C Axis	Rotation Angle	≤0.015mm	≤0.01mm	Full closed-loop control
Z Axis	Up-Down	≤0.015mm	≤0.01mm
Y Axis	Left-Right	≤0.015mm	≤0.01mm

Environmental Requirement

Power Supply: 380 V ±10%, 50 Hz ±1 Hz, three-phase alternating current. Equip with leakage detection and power-off protection circuits.
Ambient Temperature: 5–40 °C
Relative Humidity: <85%
Air Supply Pressure: ≤6 bar
Machine Noise Level: ≤75 dB(A)
Liquid Requirements:All fluids used in the machine must be non-toxic and PCB-free (polychlorinated biphenyls).