Prime Engineering Cornwall Ltd

CNC Turning 

Prime Engineering Ltd is equipped with two CNC lathes providing conventional and CNC turning capabilities to include, but not limited to:

• Component machining 
• Prototyping

We stock a wide variety of tooling, attachments and work-holding equipment to compliment our turning section. 

Our Machine Tools

• XYZ Proturn 420
• XYZ Vulcan 200

CNC Milling

Prime Engineering Ltd is equipped with multiple CNC machine tools providing 3 axis and 4 axis milling capabilities to include, but not limited to:

• Component machining 
• Tool / Fixture machining 
• Prototyping

We stock a wide variety of tooling, attachments and work-holding equipment to compliment our milling section. 

Our Machine Tools

• XYZ 810
• XYZ 810
• XYZ 1010
• XYZ 1010 with 4th axis
• XYZ DPM 

Conventional Turning 

Prime Engineering Ltd offers Conventional Turning on one of our machine tools with an array of tooling and work-holding equipment to allow for the machining across many components and applications.

Our range for conventional turning is as follows: 

• Maximum bar diameter: 80mm 
• Swing range: 250mm
• Distance between centres: 800mm

Conventional Milling 

Prime Engineering Ltd offers Conventional Milling on one of our machine tools with an array of tooling and work-holding equipment to allow for the machining across many components and applications.

Our range for conventional milling is as follows: 

• X axis: 750mm
• Y axis: 500mm
• Z axis: 500mm 

Surface Grinding 

Prime Engineering Ltd is equipped with two surface grinding machine tools to cater for a variety of surface grinding techniques and component sizes. Our Jakobsen surface grinder features a Z axis incremental down-feed to automate larger grinding operations. For smaller grinding jobs, such as cutting tool manufacture or gauge making, our Jones and Shipman 540 is utilized. 

 Our Machine Tools

• Jakobsen with incremental down-feed
• Jones and Shipman 540 

Our range for Surface Grinding is as follows: 

• Jakobsen: X axis: 800mm, Y axis: 500, Z axis: 290mm with incremental down-feed. 
• Jones and Shipman: X axis: 450mm, Y axis: 150mm, Z axis: 190mm

Centreless Grinding 

Prime Engineering Ltd offers through feed Centreless Grinding on our BSA No.4 centreless to cater for components requiring precise finished diameters with a high quality surface finish. 

Our range is as follows: 

• Ground Diameter range: 2mm - 100mm
• Ground Length range: 150mm  

Internal Keyway Cutting 

Internal key seating operations are carried out at Prime Engineering Ltd including in house manufacture of all necessary tooling required including any special fixturing.

Standard sized key way cutting tools are made to nominal standard widths with a plus 0.05mm tolerance.

Ensuring a Correct Fit

Gauging for all sizes of key way required is produced in house. This consists of a shaft ground to the requisite bore size, a key way machined into the shaft and a standard sized square key fitted into the shaft which is the used as a gauge.

Our capacity ranges from 2mm to 20mm width with a vertical capacity of around 150mm.

Our dedicated fabrication workshop caters for the cutting, preparation, welding and fabrication of components and assemblies. 

MIG (Metal Inert Gas) Welding: We offer MIG welding for low-volume Mild Steel fabrication. 

TIG (Tungsten Inert Gas) Welding: We offer TIG welding for components in Mild Steel, Stainless Steel and Aluminium. 

Tool, Fixture and Jig design and manufacture 

At Prime Engineering Ltd, we understand that Engineering is not always straight-forward and creative solutions are required. 

We adopt a 'There is always a solution' approach to manufacturing and are able to offer advice and solutions to component manufacture. 

Tooling, Work-holding and Manufacturing Processes 

We are able to review our customers requirements and produce custom tooling and custom work-holding to provide accurate and efficient results. Be it a tool to machine multiple operations in one go, or a fixture to hold un-common shapes/ features of a component- or simply to complete multiple operations in one set up or one machine cycle Prime Engineering Ltd can help and offer a solution. 

One of our recent projects was to automate cutting of extruded tube on a manual saw to improve efficiency and safety for the operator in which a custom jig was made to sit on the saw for accurate and safe repetition of the cutting operation. Photos can be seen within our case study area on our website. 

Repairs and Refurbishment 

Prime Engineering Ltd offers a repair and refurbishment service on components and/ or assemblies where machining/ engineering is required to complete a quality repair, and where dimensional accuracy is required. 

Please get in touch to discuss your requirements.  

Reverse Engineering and CAD Drawings

At Prime Engineering Ltd we offer a reverse engineering service in which we review a sketch, component, assembly and/or project and are able to take accurate measurements, produce a 3D model and drawing(s) and manufacture to requirements. 

We can assist if:

• You have a component/ assembly that requires replicating 
• You want a 3D model and/or drawing produced for your component(s)

Please see our case studies of this service.