Fully Automatic Bone Sawing Machine User Manual

This manual is designed to assist operators and maintenance teams in food processing plants, slaughterhouses, and central kitchens to run this Automatic Bone Saw Machine safely and efficiently. This heavy-duty equipment is engineered for high-capacity cutting of frozen meat, bone-in meat, frozen fish, and large ribs. Before the first startup, it is absolutely mandatory to read all safety regulations carefully.

Table of Contents

1. Safety

2. Specifications

3. Installation

4. Operation

1. Safety

1.1 Basic Safety Operation Requirements

1. Machine operation and maintenance shall only be performed by qualified personnel who have received professional training and mastered standard safety operation procedures. Electrical maintenance must be conducted by personnel with legally recognized qualifications

2. All operators must be familiar with the position, function and operation method of the emergency stop button to respond to emergencies.

3. The operation manual shall be stored in the designated position beside the machine, properly kept and accessible for reference at any time.

1.2 Hazard Zone Description

1.2.1 Electrified High-risk Zones

High-voltage components such as control cabinets, motors and transformers carry high voltage. Even after the main power switch is turned off, the terminals on the factory power-supply side remain energized. Servo drives still retain a residual high voltage for up to 5 minutes after power-off. Non-professional electrical personnel are prohibited from approaching. Violation may cause fatal electric shock accidents.

1.2.2 Mechanical Moving Hazard Zones

Moving parts including motors, lead screws, synchronous transmission components and air cylinders are defined as hazard zones. Entry is strictly prohibited during automatic operation. If entry is required for maintenance purposes, the power supply must be completely cut off in accordance with standard procedures before any operation.

1.3 Safety Devices

The machine is equipped with safety devices including limit switches and protective baffles. Operators must fully understand their structure and functions.

DANGER: Unauthorized removal, modification, or displacement of safety devices is prohibited.

WARNING: Verify all safety devices work normally before machine startup and operation.

1.3.1 Emergency Stop Button

The emergency stop button is used for immediate machine shutdown in case of equipment abnormality or personal safety hazards. All operators must be proficient in its usage and press it immediately in dangerous situations.

2 Specifications

2.1 Overview

This equipment is a safe and high-efficiency cutting machine. Materials are placed onto the clamping worktable. Two vertically crossed linear guide rails constrain the moving direction. A servo motor paired with precision timing belts provides driving power while ensuring a positioning accuracy of 0.1 mm. After materials are neatly positioned, the worktable feeds forward slowly along the X-axis. Once the probe detects the material, the system automatically calculates the required cutting dimension according to the current length of the food product.

This control system supports multiple cutting modes as follows:

Double-blade Mode: This mode eliminates idle strokes during cutting, greatly boosting production efficiency.

Single-blade Mode: To accommodate different user habits, this mode is split into near-side single-blade and far-side single-blade, switchable under manual operation. It delivers superior cutting precision.

A. Near-side Single-blade Mode: Cutting performed by the blade on the operator side.

B. Far-side Single-blade Mode: Cutting performed by the blade opposite to the operator side.

Real-time compensation for cutting dimension (cutting thickness) is available during cutting operation for all three cutting modes above.

2.2 Technical Parameters

Unit	Item	Specification
Cutting	Power	3.0 KW
Cutting	Speed	32 m/s
X-Axis	Power	0.75 KW
Y-Axis	Power	0.75 KW
Conveyor	Power	0.3 KW
Voltage	Input	380V-420V

2.3 System Composition

Name	Function
Gripper	Fix food materials of different sizes onto the material carrier table
X-axis	Controls the width of loaded materials, i.e., the cutting length per sawing stroke
Y-axis	Controls the longitudinal dimension of materials, i.e., the thickness of each cut slice
Cutting Unit	Drives the saw blade to perform cutting work
Tensioning Device	Nitrogen spring tension assembly that keeps the saw blade under preset tension
Chip Collection Box	Collects sawdust generated during cutting
Touch Screen	Human-machine interaction interface; operators control the machine by tapping displayed areas on the screen
Electrical Control Cabinet	Houses controllers, servo drives and other relevant control components

Installation

3.1 Selection of Installation Location

3.1.1 Installation Environment

3.1.2 Area Around the Machine

Temperature: To maintain stable machining accuracy of the machine, an ambient temperature range of 4–30°C is recommended.

Humidity: Relative humidity below 80% with no condensation.

Vibration: Locate the machine in an area free from direct vibration and impact loads acting on the main unit.

Other requirements:

Free of corrosive gases and flammable gases

Away from combustible materials

Low levels of dust, powder, salt, and iron powder

No splashing water, oil, or chemical liquids

No static electricity or other sources causing electrical noise

No strong magnetic field generation

No power cables routed in close proximity

Remove obstacles on walkways, floors and operating areas that hinder operation.

Prevent water spillage onto the floor.

Ensure adequate lighting for the working area.

Enclose moving machine areas with protective covers and safety guards to prevent collision injuries between operators and equipment.

Keep first-aid supplies readily available nearby.

Layout Plan of Main Equipment and Auxiliary Machines: The machine consists of three parts: the machine main body, the safety protective mesh, and the discharge outlet shield.

Fully Automatic Bone Sawing Machine User Manual

3.1.2 Installation Procedure

① The machine main body is fully assembled and pre-commissioned at our factory. No assembly is required on site. Only check whether any fasteners have become loose during transportation.

② Safety guard mesh: The safety guard mesh is made up of five components, including two front and rear panels, two left and right panels, and three top crossbeam supports. All components are connected via clamping grooves and secured with fasteners. A total of 4 access doors are reserved on the safety guard mesh.

③ After completing installation of the machine main body and safety guard mesh, connect the control cable between the control panel and machine main body correctly.

	Pull upward at the position indicated by the red arrow; simply insert it back in the correct orientation during installation.
	Insert this square plug back in accordance with its orientation.Run the other control cable into the control cabinet and plug it into Port A, as shown in the figure below:
	After both connectors are properly connected, switch on the power. If the touch screen lights up and operates normally, cut off the power supply, then install the cover plate at the wiring connector position.

④ The following two diagrams illustrate the main components of the bone saw main unit.

⑤ Saw blade tension is realized by an air spring. Tightening and loosening of the saw blade is controlled via the tensioning hand crank shown in the left figure.

When replacing saw blades: first rotate the tensioning rocker arm counterclockwise until the saw blades are completely slack, then remove the two saw blades sequentially. For the inner saw blade, move it into the outer saw blade groove first before pulling it outwards. Before removing the first saw blade, detach the saw blade guide block in advance.

When installing new saw blades, ensure the tensioning rocker arm stays in the released position (the figure shows the tensioned state).

Pay attention to the saw blade orientation during installation: all teeth point downward and face outwards on both sides. Fit the inner saw blade first, then install the saw blade guide block, followed by the outer saw blade. Fasten the upper and lower saw blade guide blocks, mount the saw blade guard, then tension the saw blades. Finally, check whether the position shifts during forward and reverse rotation of the saw blades.

⑥ Disassembly and assembly of conveyor belt: The discharge conveyor belt on the bone saw main unit is detachable for cleaning. The detailed disassembly and assembly procedures are described below.

When disassembling and assembling the discharge conveyor belt, loosen the coupling first, then release the safety buckles at both ends. Pull firmly outward to remove the discharge conveyor belt.

⑦ The discharge outlet guard adopts a quick-mount design. Four hanging studs are pre-installed at corresponding positions on the safety guard mesh, with four hooks arranged on the guard itself.

For installation: align the hooks with the hook openings, push inward and slide down to lock into place.

For removal: lift the guard upward first, then pull outward to detach it.

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4. Operation

4.1 Preparations before operation

1. Air Supply Connection

Power Supply Connection

Earthing

● Use clean and dry compressed air; moisture ingress may cause equipment damage.

● The air pressure at the equipment inlet shall be above 0.8 MPa. Insufficient air pressure will lead to inadequate material clamping force and affect normal machine operation.

● Select pipe diameter for piping connected to the machine with consideration of pipe length, routing and compressed air flow rate. During piping installation, prevent water accumulation inside pipes and install automatic drain traps as required.

● Open the control cabinet door.

● Route cables through the cable entry port.

● Connect main power terminals U, V, W, N (black wire) and PE (green wire).

● Distinguish input and output terminals when connecting the primary power supply to the transformer terminals.

● Verify the supply voltage at the primary side of the circuit breaker.

Permissible voltage: AC 380～420 V

Recommended voltage: AC 380～400 V

Conveyor belt motor voltage: 220 V

● Connect the equipment earthing wire to the designated earthing terminal with a wire cross-sectional area no less than 2.5 mm².Do not share the earthing point with machinery that generates or may generate electrical noise.

4.2 Trial Operation

Check the following items during trial operation:

● Check the movement of X/Y feeding axes.

● Verify cutting thickness, feeding speed, retraction speed and other corresponding functions.

● Turn to automatic mode by pressing the [Manual/Auto] selector switch.

4.3 Mechanical operating components

Control Cabinet

1. Main Power Switch

Used to switch the power supply of the machine main body on and off.

2. Emergency Stop Button

Press this emergency stop button to halt the machine immediately; it will stop all machine movements. Once pressed, the button will latch into position. To release the latch, rotate the button clockwise following the arrow marked on it.

The following status changes will occur after activating the emergency stop:

● Emergency stop of X and Y axis drives

● Saw blade coasts to a stop

● An emergency stop triggered message is displayed on the touch screen

Touch Screen

Tap the required keys on the operation panel screen with your finger to view and set various parameters directly on the interface. The operation is simple and user-friendly.

Based on the control logic for driving components, this machine supports the following operation modes:

● Manual Mode

● Automatic Mode

Parameter-setting menus can be accessed in either mode.

The operating system of this machine includes the following interfaces:

● Automatic Operation Interface

● Manual Operation Interface

● Parameter Setting Interface

● Manufacturer Parameter Interface

4.4 Operating Procedures

① Connect the power supply (U, V, W, N, PE) and air source (0.8 MPa), then turn on the main power switch.

② Switch to the Manual Interface and perform an automatic reset; the X/Y axes will return to their origin positions.

③ Switch to the Automatic Interface: select the operating mode (double saw blade mode or single saw blade mode) to activate the selected mode, then set the slicing thickness parameter.

④ Switch back to the Manual Interface; the material clamp will be in the open state at this time.

⑤ Load the workpiece. When your hand passes through the safety light curtain during loading, an alarm will be triggered, which is a normal condition.

⑥ Tap the automatic reset once again (triggered by the alarm during workpiece loading). The red indicator light of the [Stop] button will light up. Press the [Workpiece Clamp] button to clamp the workpiece securely.

⑦ Start operation: Press the [Start Button]. For the initial startup of the whole machine, this bone saw adopts variable-frequency soft start with a full startup duration of approximately 15 seconds. After full startup, the machine proceeds with the cutting operation.

Measure the actual slicing thickness during cutting. If the actual thickness does not match the set value, make real-time adjustments via Offset 1 and Offset 2 respectively:

Offset 1 compensates for slicing thickness deviation of the near-side saw blade
Offset 2 compensates for slicing thickness deviation of the far-side saw blade
The speed of the discharge conveyor belt can be adjusted in real time using the speed regulating knob on the control panel, or enabled/disabled via the touch screen.
⑧ Cutting cycle completed. Upon finishing cutting, the material clamp automatically returns to origin and releases the workpiece. Remove the residual tail material.
⑨ For repeated cutting of workpieces with identical specifications, there is no need to press the [Stop] button or other keys; simply repeat steps ⑤ to ⑧.
⑩ To stop cutting, change product specifications, replace saw blades or perform other maintenance operations, press the [Stop Button] first and switch into the Manual Interface.
⑪ In case of any abnormal fault during cutting, press the [Emergency Stop Button] immediately. After troubleshooting, repeat steps ② to ⑧ to resume operation.

Note:

The [Auto Clamp Button] on the control panel is only functional when the system is on the Automatic Interface AND the red indicator light of the [Stop] button is illuminated.

5. Spare Parts List

No.	Description	Specification	Qty
1	Discharge Conveyor Speed Regulator	—	1 pc
2	Relay	24V	2 pcs
3	Photoelectric Switch	NPN type	2 pcs
4	Scraper Blade	—	12 pcs
5	Pneumatic Tension Spring	1500N	1 pc
6	Saw Blade Model 3375	3375×19×3T	10 pcs
7	Electric Control Cabinet Key	—	2 pcs
8	Mounting Foot Assembly	—	1 set