You can use a Blachard grinder to achieve high-precision surface grinding, especially when removing large amounts of material from workpieces. The rotary surface grinder uses a rotating worktable and vertical grinding wheel to rapidly process castings, forgings, and plate stock. Blanchard grinders achieve flat, smooth surfaces with a distinct cross-hatched finish. Here are a few ways to optimize performance using Blachard surface grinders:
Achieve the Right Setup
Achieving desired results with a Blachard grinder begins with proper setup, which affects grinding quality and efficiency. The table and spindle must be aligned to provide even contact between the wheel and the workpiece. Misalignment can lead to uneven wear, chatter marks, and inconsistent surface finishes. Inspect the spindle bearings and use a dial indicator to check the magnetic chuck for flatness. The chuck surface should be clean and free from rust, oil, and chipping because obstructions can affect part positioning.
Secure the workpiece firmly on the chuck to prevent movement during grinding. You can also balance the wheel before use to reduce vibration. Routine inspection and setup before use help maintain the efficiency of Blanchard grinders, resulting in more accurate part dimensions. Use the correct part loading area to prevent the wheel from cutting too hard or too soft. Aligning parts in circular bands or concentric squares around the outer inches of the table supports stable, uniform cuts.
Use the Right Wheel
Selecting the right wheel allows you to achieve the desired finish and rate of material removal. A Blanchard grinder can use coarse-grit wheels for heavy stock removal and fine-grit wheels for precision finishing. The wheel should match the stock’s hardness to avoid glazing, overheating, and rapid wheel wear. Soft wheels are typically used for hard metals, and hard wheels for soft materials. Abrasive coarse-grit aluminum oxide may be used for general steel grinding, while silicon carbide wheels are suitable for non-ferrous metals. Cleaning the grinding wheels frequently helps maintain sharpness, surface finish quality, and efficiency. Clogged or dull wheels increase friction, which can damage the wheel and workpiece.
Maintain Coolant Flow
A Blanchard grinder uses a coolant to control temperature, as overheating can damage the workpiece and affect the finish. Check the coolant nozzles for correct positioning and verify that they cover the full grinding area. Sufficient flow and pressure improve cooling efficiency, reducing heat buildup during grinding. This prevents parts from warping or developing burn marks.
Sufficient coolant also helps flush away metal chips, keeping the cutting area clean for effective grinding. Replace dirty or diluted coolant to maintain surface finish quality and prevent part corrosion. If you’re grinding for several hours, monitor coolant flow consistency to avoid overheating. Replacing or cleaning coolant filters helps improve circulation and extend the life of the wheel and internal components.
Use Routine Maintenance Schedules
Proper maintenance keeps your Blanchard grinder accurate and efficient. Cleaning the machine regularly removes dust and obstructions that might cause vibrations or impede smooth operation. Demagnetize the chuck after use to maintain its holding strength. Over time, wear or debris may weaken the chuck’s grip, and resurfacing it helps the workpiece stay in place during use. Inspect electrical connections for power issues and fasten loose parts to reduce vibrations that may impact grinding performance. Other maintenance routines include:
- Lubricating gears, bearings, and slides regularly to reduce friction
- Monitoring hydraulic and spindle systems for leaks
- Replacing worn belts, seals, and bearings to prevent breakdowns and downtime
- Addressing abnormal vibration or noise by requesting professional repairs
- Aligning and calibrating the machine properly for consistency and accuracy
Timely proactive maintenance extends the lifespan of your grinder. You can identify issues early before they cause major damage to the machine. Recording and tracking performance metrics, such as G-ratio and rate of removal, helps determine if the machine is operating efficiently. Adjusting feed rates, wheel speed, and table rotation to match the project requirements also helps support long-term use of your Blanchard grinder.
Find New and Used Blanchard Grinders Today
To get optimal performance from a Blanchard grinder, start with a properly functioning tool. High-quality grinders are available in various sizes to meet your project requirements. You can find new or used equipment in good working condition. Contact machinery dealers today to learn more about Blanchard grinders.
