How to choose the right tool die equipment precision engraving machine?

To select a suitable precision engraving machine for knife die equipment, it is necessary to combine the three core factors of machining material, precision requirements and capacity requirements of the knife die, and match the workshop working conditions and cost budget at the same time. The specific selection steps and key points are as follows:

Clear machining requirements and lock core parameters.

Processing material and thickness

If processing wooden knife dies (such as plywood and density board), an economical rack drive engraving machine can be selected, and the spindle power of 3~5kW can meet the demand;

If machining metal die (such as aluminum plate and thin steel plate), it is necessary to choose a heavy-duty lead screw drive engraving machine with spindle power ≥7.5kW and equipped with a water-cooled spindle (good heat dissipation, suitable for long-term metal cutting);

If both wood and aluminum materials are processed, the hybrid transmission model is preferred, and the spindle supports air cooling/water cooling switching.

At the same time, confirm the maximum processing thickness of the equipment, which needs to cover the thickness of the daily knife die template (usually 18~25mm for wooden template and 3~10mm for metal template).

Machining accuracy and repeated positioning accuracy

Knife die carving requires extremely high accuracy, and two key indicators should be paid attention to:

Positioning accuracy: the wooden die should be ≤±0.05mm, and the metal die should be ≤±0.02mm；;

Accuracy of repeated positioning: ≤±0.01mm, so as to ensure the consistency of cutter die size during batch engraving.

The precision of the lead screw drive model is much higher than that of the rack drive model, which is suitable for high-precision metal die machining; Rack drive is suitable for wooden knife dies with low precision requirements.

Processing breadth and productivity

According to the maximum die size for daily processing, choose the workbench width (common specifications: Model 1325 = 1.3m×2.5m, Model 1530 = 1.5m×3.0m) to avoid overqualified or overqualified.

If the capacity demand is high, double spindle or automatic tool changing machine can be selected to reduce the tool changing time and improve the processing efficiency.

Distinguish the performance of core components to ensure the stability of equipment.

Spindle system

Spindle speed: 18,000 ~ 24,000 r/min for wood die processing and 12,000 ~ 18,000 r/min for metal die processing; The wider the adjustable speed range, the stronger the adaptability.

Cooling mode: air-cooled spindle is easy to maintain and suitable for intermittent processing; The water-cooled spindle radiates heat evenly, which is suitable for long-term continuous metal cutting and needs a cooling water circulation system.

Transmission system

Rack drive: high speed, low cost, but slightly lower precision, suitable for batch processing of wooden knife dies;

Lead screw drive: high precision, stable operation, but relatively slow speed, suitable for high precision machining of metal knife die;

Helical double drive: combining the speed advantage of rack and the stability of screw, it is suitable for high-end multi-material processing needs.

control system

Industrial CNC systems (such as Wei Hong and new generation systems) are preferred, which support the functions of breakpoint carving and path optimization. The operation interface is simple and compatible, and it can be adapted to a variety of tool die design software (such as CAD and CorelDRAW).

Avoid choosing home-level control system, which has poor stability and is prone to step loss and machine sticking.

Worktable and fixture

The double fixed worktable of vacuum adsorption and pressure plate fixture is needed to prevent the deformation of thin metal plate when cutting; Simple vacuum adsorption table can be selected for wood knife die processing, which has higher clamping efficiency.

Matching workshop working conditions and additional functions

Power supply and site adaptation

High-power metal engraving machine needs 380V three-phase electricity, and small wooden engraving machine can be compatible with 220V single-phase electricity. It is necessary to confirm the power supply conditions of the workshop in advance.

Equipment installation needs to reserve space for dust removal and cooling system, and metal processing models need to be equipped with industrial dust removal machine and cutting fluid circulation system.

Practicability of additional function

Automatic tool alignment instrument: it is recommended to reduce manual tool alignment error and improve machining efficiency.

Breakpoint carving: dealing with sudden power failure, avoiding workpiece scrapping, suitable for long-term processing;

Dust-proof and waterproof design: prolong the service life of guide rail and screw rod, suitable for workshop environment with more dust.

Evaluate brand and after-sales, and reduce later cost.

Brand selection: give priority to professional manufacturers with good reputation in the industry and avoid labeling machines; The material selection of parts of the equipment in Dachang is more standardized, the technology is more mature and the failure rate is low.

After-sales service: confirm whether the manufacturer provides on-site installation and debugging, operation training and the distribution of local after-sales outlets; The warranty period of the core components (spindle, control system) of the knife die engraving machine should be ≥1 year, and the wearing parts (chuck, guide rail) should be supplied with sufficient spare parts.

Cost budget: rack-driven wood engraving machine is cost-effective and suitable for small processing plants; The price of metal engraving machine driven by lead screw is relatively high, which is suitable for middle and high-end knife mold processing enterprises, and it needs to be selected according to its own business scale and profit space.

Type selection summary table

Key points of core configuration of recommended machine types for processing requirements

Wooden knife die, 3 ~ 5kW air-cooled spindle driven by batch low-precision rack, vacuum adsorption table, positioning accuracy of ±0.05mm

Metal knife die, high-precision screw drive water-cooled spindle ≥ 7.5 kW spindle, vacuum+pressure plate fixture, positioning accuracy 0.02 mm.

Wood/aluminum hybrid, medium and high-end production capacity, helical double-drive double-spindle automatic tool setting instrument, breakpoint engraving, industrial numerical control system.