Glebar's versatile precision grinding machines are workhorses which require a smaller footprint than similar machines yet excel in demanding high production environments where the name of the game is high volume at low cost, with exceptional precision. Below are selected case studies demonstrating how our machines excel at grinding plastic:
The DM-9CNC Wheel Dressing Machine allows a grinding wheel to be contour dressed offline using a fully programmable single diamond or rotary diamond roll. Having the ability to dress wheels offline allows the wheels to be ready for production, reducing setup time and improving machine efficiency.
The wheel is dressed on the grinding machine during setup or using a manually held contour dresser. Contour dressers require a skilled operator who moves a stylus along a metal template of the ball form as a single point diamond removes material from the wheel.
Dressing the wheel on the grinder reduces OEE and increases setup time, delaying production. Manual Template Tracing is operator dependent and inconsistent, which affects the quality of the grind, increases scrap rates, and requires more frequent dressing which shortens the life of the wheel. Deliver a process to dress the work wheel for a 1" diameter ball. The process has to improve OEE, reduce setup time, and improve consistency.
The balls are formed one at a time from bar stock on a lathe in multiple roughing and finishing tool paths. Molded balls are purchased from a contract manufacturer, then turned to achieve the desired diameter and to remove mold imperfections such as parting lines.
Purchasing the balls can be expensive, and long lead times create a need for increased inventory levels and consumption of cash. Turning can be slow and inconsistent, resulting in long cycle times, high scrap rates, and surface finishes that generally require downstream grinding or honing to meet specifications.
Manufacturers use lapping machines which are unable to hold consistent tolerances or capacity, creating inconsistent surface finishes and longer cycle times.
Provide a form grinding solution for 1" and 1.4" deodorant balls while meeting the customer's cycle time and surface finish requirements.
Challenge: To size implantable spinal cord stimulation devices that deliver precise doses of electricity to targeted nerve sites for patients suffering from chronic back problems. The device is long and flexible, which made it difficult to handle. It is also constructed of dissimilar materials of varying diameters, from metal conductive rings to fine electrical micro-wires to molded polymer and plastic supports, which made grinding a fine surface finish with stringent diameter control and without damage to the parts very challenging.
Challenge: To size thin walled tubing used for surgical instruments insuring a mirror like 3Ra finish.
Below is a sample of Plastic components Glebar has ground over the years. Please contact us and send us your drawing for a personal consultation.
The PG-912DG Enclosed Centerless Form Grinder is designed to increase throughput, reduce setup times, and achieve tighter tolerances. Additionally, it provides better integration to gauges, automation, and remote service diagnostics. It can produce multiple cylindrical or spherical parts from a single piece of material.