The M3 mod. 380US sharpener with spindle is an excellent solution for those looking for a used machine in perfect working order. It is a versatile, robust model, highly regarded for its ability to sharpen a wide range of cutting tools. Ideal for machine shops, sharpening workshops, and industries that need to keep cutting tools in top condition, the M3 mod. 380US offers reliability and precision in every operation.

Visual Description and Components

Visually, the M3 model 380US features a compact and well-balanced structure. The machine is built with a gray cast iron base, which ensures solidity and reduces vibration during operation, thus improving sharpening quality. The central spindle is well-protected and easily accessible for tool changes, making it easier for the operator to replace and adjust tools.

The overall dimensions of the machine may vary slightly depending on the accessories mounted, but in general they are around 1000 mm in length, 800 mm in width, and 1200 mm in height. The total weight is around 600 kg, making the M3 mod. 380US stable during use, even for intensive operations.

Mechanical Characteristics

The M3 mod. 380US is equipped with a powerful motor that ensures a constant rotation speed, ideal for sharpening steel tools and harder materials such as widia. The three-phase motor provides approximately 2.2 kW of power, with adjustable speed between 1500 and 3000 rpm, depending on the type of tool being sharpened and the material being worked.

Thanks to the spindle, the machine can grip and process tools with variable diameters, allowing for high precision in sharpening operations. The M3 mod. 380US is also equipped with a swivel head that allows the operator to adjust the sharpening angle, adapting to a wide range of tool geometries.

Usage Procedure

Using the M3 mod. 380US is simple and intuitive. Once the tool is secured in the chuck, the sharpening angle is adjusted according to the desired cut. After setting the angle, select the rotation speed best suited to the tool material (for example, a lower speed for carbide tools and a higher speed for high-speed steel).

Thanks to the fine adjustment of the head and the ability to mount different grinding wheels, the operator can achieve precise sharpening with a uniform finish. The machine also features a cooling system to prevent overheating of the tools during sharpening.

Accessories Available

for the M3 model 380US , enhancing its versatility. These include grinding wheels for sharpening steel and carbide tools, additional supports for cutters and bits, and measuring tools to ensure precision sharpening. The machine is also compatible with diamond grinding wheels, ideal for working on extremely hard materials.

Mathematical Formulas for Optimal Use

To get the most out of the M3 mod. 380US , it's essential to calculate the optimal rotation speed based on the material being worked and the tool diameter. The basic formula is:

n = (Vc × 1000) / (π × D)

Where:

• n is the rotation speed (rpm),
• Vc is the cutting speed (m/min),
• D is the diameter of the tool (mm).

For example, for a 10mm diameter steel tool and a recommended cutting speed of 25m/min, the optimal rotation speed will be around 800rpm.

Workable Materials

The M3 mod. 380US is designed for sharpening tools made of HSS (high-speed steel), alloy steels, and hard materials such as widia (tungsten carbide). The wide range of available wheels allows for sharpening different types of tools, ensuring long-lasting cutting tools and high-quality work.

Maintenance and Safety

To keep your M3 model 380US in tip-top condition, regular maintenance is essential. This includes cleaning the grinding wheels and guides, lubricating the moving parts, and periodically checking the spindle and cooling system. It's also essential to check the condition of the grinding wheels, replacing them when necessary to ensure precision sharpening.

In terms of safety, it's important to comply with current regulations, such as wearing protective eyewear and durable gloves during use. If the machine isn't CE certified, it can be brought into compliance by installing additional guards and emergency stop systems.

How to Evaluate a Good Used Car

The M3 mod. 380US , if used but in good condition, represents an excellent deal. To evaluate its quality, it's important to check the condition of the spindle, verify the smoothness of the swivel head movements, and ensure the motor operates without abnormal vibrations. Another aspect to check is the condition of the grinding wheels and sharpening guides, which must be in good condition to ensure precision.

Sectors of Use

M3 model 380US sharpener is used in various sectors, such as the mechanical engineering industry, tool shops, and professional sharpening laboratories. Its versatility makes it ideal for sharpening a wide range of tools, from the most common steel cutting tools to carbide tools for precision work on hard materials.

Why It's Better to Buy Used

Buying a used M3 model 380US is an excellent opportunity to save on high-quality equipment. The price of a used machine is significantly lower than a new one, and if well-maintained, it offers performance comparable to a brand-new machine. Furthermore, by purchasing a used machine, you can test a proven product, avoiding surprises related to potential manufacturing defects.

In conclusion, the M3 model 380US sharpener with spindle represents an ideal choice for those seeking precision, versatility, and reliability, with the advantage of a competitive price on the used market.