In CNC turning, a chuck (or specialized clamp) holds bars of material and, as they are rotated, a tool is fed to the piece to remove material to create a specific shape. A turret, which holds a group of tools, is programmed to move along the work piece in three different axes of motion to shape the material according to the assigned specifications.
Since CNC turning involves removing material from a work piece, it`s considered a [subtraction machining" process. It is done on a lathe machine, which can be used on all types of material, from wood to metal to plastic. It can also be done on a mill or a drill press.
Turning is primarily used to create cylindrical parts. It can be completed on the outside or the inside of a work piece, which is known as boring. The process can also be used to conduct various other operations, including:
· Grooving: Cuts grooves or creates narrow cavities in work pieces.
· Taper turning: Creates a gradually decreasing diameter in a cylindrical shape.
· Drilling: Produces round holes, which are typically for screws and bolts.
· Facing: Cuts a flat surface perpendicular to the axes of the milling cutter.
· Parting: Separates one part of the work piece from another.
· Knurling: Creates vertical, horizontal or crossing lines on the work piece.
· Threading: Makes grooves that can be screwed into other objects.
CNC Turning process
l Creating a digital representation of the part in CAD
l Creating the machining code from the CAD files
l CNC lathe setup
l Manufacturing of the turned parts
Capabilities
Typical
Feasible
Shapes:
Thin-walled: Cylindrical
Part size:
Diameter: 0.02 - 80 in
Materials:
Metals
Ceramics
Surface finish - Ra:
16 - 125 μin
2 - 250 μin
Tolerance:
± 0.001 in.
± 0.0002 in.
Max wall thickness:
0.02 - 2.5 in.
0.02 - 80 in.
Quantity:
1 - 1000
1 - 1000000
Advantages:
All materials compatible
Disadvantages:
Limited to rotational parts
Applications:
Machine components, shafts, engine components
Suitable Materials for Turning
In turning, the raw form of the material is a piece of stock from which the workpieces are cut. This stock is available in a variety of shapes such as solid cylindrical bars and hollow tubes. Custom extrusions or existing parts such as castings or forgings are also sometimes used.
Turning can be performed on a variety of materials, including most metals and plastics. Common materials that are used in turning include the following:
l Aluminum
l Brass
l Magnesium
l Nickel
l Steel
l Thermoset plastics
l Titanium
l Zinc
When selecting a material, several factors must be considered, including the cost, strength, resistance to wear, and machinability. The machinability of a material is difficult to quantify, but can be following characteristics:
l Results in a good surface finish
l Promotes long tool life
l Requires low force and power to turn
l Provides easy collection of chips
Cnc Turning,Cnc Mill Turn,Cnc Milling And Turning,Precision Cnc Turning Suzhou FCE precision electronics Co., LTD , http://www.fcesz.com
What is CNC Turning
Solid: Cylindrical
Alloy Steel
Carbon Steel
Cast Iron
Stainless Steel
Aluminum
Copper
Magnesium
Zinc
Composites
Lead
Nickel
Tin
Titanium
Elastomer
Thermoplastics
Thermosets
Very good tolerances
Short lead times
Part may require several operations and machines
High equipment cost
Significant tool wear
Large amount of scrap
Alto aims at the high-density products of the sports industry into another LED business
According to the announcement of Alto Electronics' 2014 annual report, during the reporting period, the company realized revenue of 367 million yuan, an increase of 31.0, net profit of 67.31 million yuan, an increase of 39.9, profit distribution of 1.5 yuan per 10 shares, and capital reserve. 10 shares were transferred to 7 shares. It is understood that the company's annual report and performance forecast income difference of 30 million, the net profit difference of 3.5 million, mainly due to differences in income recognition outside Shenzhen. In terms of growth rate, the company's revenue increased by 31, net profit increased by 40, while the company's revenue increased by -8 in the same period last year, net profit increased by -7, the performance growth inflection point has been confirmed by the annual report. The error ratio of the actual performance of the company's annual report is less than 10, which belongs to the normal financial treatment scope and does not affect the judgment of the company entering the performance release period. According to the data, the company's sports industry achieved sales of LED display products of 63.69 million yuan in 2014, and its revenue share of LED display products reached 36, mainly including the world famous top events such as Brazil World Cup, French Open and Wimbledon. The company's accumulated experience and strength in the international sports market has deepened the understanding of the sports industry's product demand and industrial chain operation, and helped the company to develop the domestic sports market. At present, with the support of the government, the domestic sports industry continues to heat up, and the company plans to expand the entire chain of product marketing, equipment leasing, content services, advertising operations and event broadcasts. In the process of arranging the sports industry, the space for endogenous and extended development is relatively broad. In line with the trend of the industry development, the company launched an indoor high-density LED display system with 1.0mm point spacing (small pitch) and an outdoor 3.0mm pitch high-density LED display system (intermediate spacing), and successfully won the Geneva Motor Show and the Paris Motor Show. Orders for high-density LED products from heavyweight customers such as Pudong Airport, CCTV, and Jiangsu TV. This year, the trend of military-civilian integration and smart cities is still obvious. The company's small-pitch products will dig deep into the market demand of military and urban surveillance and command. The Beijing sales subsidiary established last year will play a central role. At the same time, the company's mid-pitch products are aimed at the blue ocean market of bus booths and newsstands, and are also expected to achieve major breakthroughs in market expansion.