Technical Data Sheet for the "La Prora" Model U 40 R Sharpener

Brand : La Prora
Model : U 40 R
Year of construction : 2000
Weight : 630 kg
Machine type : Universal sharpener
Power supply : Three-phase, 400V / 50Hz
Installed power : 3 kW
Spindle speed : 1500-4500 RPM (adjustable)
Longitudinal table travel : 500 mm
Transversal table travel : 200 mm
Vertical head travel : 300 mm
Grinding wheel dimensions : Up to 200 mm in diameter
Cooling system : Integrated, with tank and pump for coolant
Accuracy : ±0.005 mm
Sharpening type : Universal (grinding wheels, cutters, bits, 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 manufacturing environments where regular tool sharpening is required to maintain high workmanship quality.

What is it for?

This sharpening machine is used to resharpen worn tools, restoring their cutting edge and thus ensuring greater durability and machining precision. It is suitable for both solid 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 the costs associated with purchasing new tools.

How to use it?

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 appropriate grinding wheel according to the tool material and mount it on the machine.

2. Regulation:

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

3. Sharpening:

   • Start the grinding wheel rotation and apply coolant to prevent overheating.
   • Make light, even strokes, maintaining constant pressure.
   • Check the tool regularly during sharpening to ensure 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 sharpening quality with appropriate measuring instruments.

Materials Used

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

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

Types of Sharpeners

• Manual Sharpeners : They require an experienced operator to obtain precise results.
• Semi-Automatic Sharpeners : They have some automated features that reduce human intervention, improving accuracy.
• CNC sharpeners : Fully automated, they offer maximum precision and repeatability, ideal for series 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 the table guides, spindles and moving parts following the manufacturer's manual.

3. Periodic Checks:

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

4. Security Check:

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

Why You Should Buy a Used "La Prora" U 40 R Sharpener

1. Economical Convenience : A used sharpener, such as the La Prora U 40 R, offers excellent value for money, 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. Spare Parts Availability : Even for older models like the U 40 R, it is generally easy to find spare parts and assistance, thanks to the brand's widespread use and reputation.

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

5. Pre-purchase 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 take full advantage of its potential.