Technical data sheet of the "La Prora" sharpener Model U 40 R

Brand : La Prora
Model : U 40 R
Year of construction : 2000
Mass : 630 kg
Machine type : Universal sharpener
Power supply : Three-phase, 400V / 50Hz
Installed power : 3 kW
Spindle speed : 1500-4500 RPM (adjustable)
Longitudinal table stroke : 500 mm
Table transverse travel : 200 mm
Head vertical travel : 300 mm
dimensions : Up to 200 mm diameter
Cooling system : Integrated, with tank and pump for coolant
Precision : ±0.005 mm
Sharpening type : Universal (grinding wheels, cutters, drills, knives, various tools)

Technical Description

What is the "La Prora" Model U 40 R sharpener?

The La Prora U 40 R sharpener is a universal machine tool designed for sharpening various cutting tools, such as cutters, drill bits, knives and other cutting tools. Thanks to its versatility and precision, it is an essential tool in machine shops, maintenance laboratories and production environments where regular tool sharpening is necessary to maintain a high quality of workmanship.

What is it for?

This sharpener is used to resharpen worn tools, restoring their cutting edge and thus ensuring greater durability and processing precision. It is suitable for both carbide (tungsten carbide) and high-speed steel (HSS) tools. Its ability to work with a wide range of tools makes it a worthwhile investment for improving production efficiency and reducing costs associated with purchasing new tools.

How is it used?

1. Preparing the Machine:

   • Turn on the power and check the coolant level.
   • Mount the tool to be sharpened on the appropriate chuck or holder.
   • Select the suitable grinding wheel according to the tool material and mount it on the machine.

2. Adjustment:

   • Set the spindle speed based on the type of material and the size of the wheel.
   • Adjust the table travel and head position to achieve the desired sharpening angle.

3. Sharpening:

   • Start rotating the wheel and apply coolant to prevent overheating.
   • Make light and uniform passes, maintaining constant pressure.
   • Check the tool regularly while sharpening to ensure that the angle and finish are correct.

4. Finish:

   • Once sharpening is complete, turn off the machine and remove the tool.
   • Clean the tool and check the quality of the sharpness with appropriate measuring tools.

Materials Used

The La Prora U 40 R sharpener is designed to work mainly on tools made of:

• Carbide Metal (Tungsten Carbide) : Extremely hard and resistant to wear, requires specific grinding wheels for sharpening.
• High Speed ​​Steel (HSS) : Most common and versatile, used for cutting tools in multiple applications.
• Stainless Steels and Alloys : Materials that require precise sharpening to maintain their cutting properties.

Types of Sharpeners

• Manual sharpeners : Require an expert operator to obtain precise results.
• Semi-Automatic Sharpeners : They have some automated features that reduce human intervention, improving precision.
• CNC sharpeners : Fully automated, they offer maximum precision and repeatability, ideal for mass production.

Maintenance

1. Cleaning:

   • Clean the machine regularly, removing chips and coolant residues.
   • Check and replace the coolant periodically to avoid contamination.

2. Lubrication:

   • Lubricate table guides, spindles and moving parts following the manufacturer's manual.

3. Periodic checks:

   • Check the wear of the grinding wheels and replace them if necessary.
   • Check the alignment of the guides and the accuracy of the machine, adjusting if necessary.

4. Security Verification:

   • Make sure that safety devices, such as emergency buttons and grinding wheel guards, are always functional.

Why It Is Worth Buying a Used "La Prora" U 40 R Sharpener

1. Economic Convenience : A used sharpener, such as the La Prora U 40 R, offers an excellent quality-price ratio, allowing you to obtain a robust and precise machine at a lower cost than a new model.

2. Reliability : Prora is a brand renowned for the quality and durability of its machines, which can operate efficiently even after years of use, if well maintained.

3. Availability of Spare Parts : Even for older models such as the U 40 R, it is generally easy to find spare parts and assistance, thanks to the diffusion and reputation of the brand.

4. Reduced Environmental Impact : Purchasing used machines helps reduce the waste of resources and the environmental impact associated with the production of new machines.

5. Preventive Evaluation : You can always request a technical evaluation before purchasing to ensure that the machine is in good operating condition, thus ensuring a safe purchase.

This detailed guide will help you better understand the La Prora U 40 R sharpener and fully exploit its potential.