Qimtek

Process: Grinding

Overview

Grinding is a method to obtain a certain surface or fine tolerances.

When grinding, a grinding stone or grinding wheel is rubbed against a component. This changes the component's surface, either to increase tolerances or to achieve nice surfaces or reduced friction.

Grinding is also used for cutting purposes, especially for shallow cuts when milling is inappropriate. Even though grinding is commonly used to improve surfaces, it is suitable for mass production when machining large amounts of components or materials.

There are several methods of grinding and grinding machines. The two main categories of grinding are surface grinding and cylindrical grinding, of which surface grinding is the most common one. Then a rotating grinding wheel is used to acheive flat surfaces. The wheel can be have different shapes depending on what kind of component is grinded. When the wheel rubs the workpiece a flat surface is created. On the other hand, cylindrical grinding uses a round-shaped grinding stone to grind cylindrical shapes with high precision. Cylindrical grinding, also known as center-type grinding, is usually external but internal grinding also occur.

There are several subcategories, for example, centerless grinding. Centerless grinding machines have no centres or chucks, instead components are supported by a blade and a regulating wheel, which controls the components rotation.

Each grinding machine has at least one grinding wheel or grinding stone, which consists of an abrasive and a bonding agent. The composition depends on the material of the component and the purpose of grinding.

Usually, every workshop has grinding machines or co-operations with grinders. If a grinding job is complex or a large, there are specialized grinding workshops.
 

Post project to suppliers with Grinding capabilities

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E.g., 24/07/2017
E.g., 24/07/2017
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Grinding projects for quote

Machining-Grinding

Grinding of free-issue EN1A blanks is needed, on behalf of a manufacturer of hydraulic equipment that outsources machining work to the tune of £500,000 every year. The buyer would like to partner with a company that can offer a fast turnaround on this work, with delivery needed within five days of order placement. This may make the project especially well-aligned with suppliers that have immediate capacity to fill. Moving forward, this will become a repeat order and the chosen supplier may also be given the opportunity to collaborate with the buyer for the production of similar items.

Machining-Grinding

This manufacturer of coffee tampers, who spends £150,000 per year on all outsourced services, urgently seeks a supplier with immediate capacity to lap the attached stainless steel turned parts. Please be aware that the first batch of parts are required on the 8th June, followed by a second batch on the 13th June.

Machining-Grinding

Outsourcing over £10,000 worth of machining work each year, this company is looking to place an order for the surface grinding of free-issue laser cut blanks. The parts in question are destined for end use within the plastics engineering industry, with 2 off required at this time. This enquiry forms part of a larger job for which the client is currently quoting and subsequently, they are keen to have an understanding of associated costs and lead times, before order placement in the near future.

Machining-Grinding

Centreless grinding of free-issue steel is needed, on behalf of a Qimtek member whose spend on bespoke machined components exceeds £35,000 a year. The component itself exceeds 5.5 metres in length - a new design, for which there is no current supplier. Interested companies are asked to make contact with the buyer by the end of the month, quoting their best price and lead time.

Machining-Grinding

Centreless grinding of press tie bars is required, on behalf of an industrial machinery client that spends £20,000 a year on bespoke machined components. This is outside of the client's in-house capabilities and therefore, they are keen to hear from suppliers who are able to undertake the requirement on a one-off basis. They may also have similar work available for the chosen supplier moving forward.

Machining-Grinding

This is an urgent request for quote from a buyer who requires Surface Grinding to be carried out on blade flats. The Buyer has historically done this job without the grinding being necessary, however their client has since changed the process and they do not have the facilities to do this in-house. The material is Gauge Plate 2mm thick.

Machining-Grinding

Standout opportunity to work with a buyer that spends a massive £6million every year on bespoke machined components. They are looking for a new supplier for their ongoing grinding requirements and currently need quotes on centreless grinding of molybdenum and tungsten rods. This project is not to be missed by those who are looking to supplement their long-term customer base with big-spending names. Interested companies are asked to make contact with the buyer by mid-February if they feel they can assist.

Machining-Grinding

Suppliers that have the capabilities to grind a shaft that exceeds eight metres in length are asked to make contact with this buyer as soon as possible. With an impressive £250,000 annual spend in the subcontract machining arena, the client specialises in long shaft turning and would like to identify third parties that can undertake the grinding aspect of the project. Owing to the nature of the client's business they may also extend similar projects to the successful supplier moving forward, alongside this ongoing requirement.

Machining-Grinding

Rough grinding of free-issue components is required, on behalf of a manufacturer of industrial spraying equipment, who has an immediate order to place for the project. This enquiry facilitates an opportunity to work with the buyer on a repeat basis, due to the ongoing nature of the requirement.

Machining-Grinding

Aerospace-approved company, who can offer grinding of titanium sheets to the stated gauge and finish, is required. This is an urgent enquiry, from a buyer who is currently over-capacity on their in-house facilities.