Thursday, 20 February 2014

CNC Machining at Hemlock Engineering Ltd



In order to produce small and complicated parts of any machine, without relying on a machinist’s skills alone, high quality and reliable machineries are needed. These special parts are very important to be as precise as possible because they play a great role in whichever industry they belong to. Some examples of things or sectors that make use of these very intricate components are watch makers, builders of aircraft, toys and many other similar industries. 

The world of manufacturing has greatly changed from the time that CNC Machining began to upgrade its technology. Before, in order to produce superb output, a machinist’s skill is depended upon. Today, with modern programming and more efficient machineries, the possibilities are endless.


  • Almost all CNC machines can operate for very long hours without stopping, thus multiplying the number of production as compared to the previous manual work.

  • CNC machines can perform with great precision. They can produce a particular component without compromising its quality and uniformity. The difficulties that are usually encountered with manual labour are no longer an issue with these machineries.

  • There is no more concern in terms of number of output, as CNC machines are able to mass produce any intricate part at any given time. With the right programming and coding, a client’s quota can be reached without breaking a sweat.

Hemlock Engineering Ltd

Hemlock is one of the most reliable c0mpanies when it comes to CNC machining in the UK. With a highly qualified workforce and up-to-date machineries, Hemlock Engineering Ltd can offer the best services available out there. 

The engineers at Hemlock specialises in the following areas: 


  • Operation of HAAS Vertical CNC milling machines;

  • Operation of high speed CNC machining of Aluminun.

Machining at Hemlock

  • 5 Axis Milling



The other services that Hemlock Engineering Ltd offers include the following:


  • Prototyping

  • Stock holding

  • Cad cam

  • Quality control

  • Sub assembly

  • Despatch

Wednesday, 12 February 2014

CNC Machining Surface Finishing

With more and more innovations created in the automobile and manufacturing industry nowadays, the demand for high precision surface finishing is also increasing using CNC milling. Newer applications in the automobile and manufacturing industry are continuing to be developed and this, in turn, gives pressure to precision engineers. With the demand for supplying high precision workpieces, both the manufacturing company and engineers have the responsibility to increase the productivity without compromising the quality of the workpieces. Both are in charge of making quality products for them to remain competitive in the market.

Surface roughness or surface finishing is one of the essential requirements for any machined products. This is because the surface is the one in direct contact with the stresses, temperatures, friction and corrosion. Alternatively, in aerospace components, the surface does have the direct effect with the fatigue strength, corrosion resistance and creep life. The visible parts of the workpieces have to be finished according to the cosmetic or aesthetic requirements of the manufacturer while the internal parts should be made with the focus of functionality in mind.

In order to achieve quality surface finish, speeds and feeds are considered. Both should go hand in hand because their combined work affects the process of cutting. When calculating for the speed and using feeds, one should not make the mistake of just guessing. Appropriate feeds combined with the right calculation of speed are definitely vital to achieve a flawless surface. Tooling and cutting conditions are the most important thing to consider if you are to talk about feeds alone. Logically, you cannot achieve quality surface finish if you have deflecting or chattering tools. On the other hand, considering speed means sensitively controlling the computer in the same way machining quality is controlled.

Surface quality is definitely a good indicator that could tell if your product is of good quality. The quality of the surface influences the wear resistance, fatigue strength, coefficient of friction and resistance to corrosion of your workpieces. The industry that we have today relates the quality of the surfaces with the level satisfaction of customers.

SURFACE QUALITY CHECKS AT HEMLOCK LTD


Using only the best equipment, workpieces can be checked automatically on our programmable Mitutoyo CMM and small or difficult to reach surface features can be measured optically using our TESA VISIO High Definition Camera. All these plus the experience of our precision engineers will put your mind at peace that we only produce high quality components for our clients. For more information about our services, you can visit our website. Alternatively, you can call us through phone at 0115 939 3305 or send your queries through email: phil@hemlockltd.co.uk.