CAD/CAM [1] refers to the integration [2] of computer-aided design (CAD) and computer-aided manufacturing (CAM). Both of these require powerful computers. CAD software helps designers and draftsmen; CAM "reduces manpower costs" in the manufacturing process. [3]
Both CAD and CAM are computer-intensive. Although, in 1981, Computervision was #1 and IBM was #2, IBM had a major advantage: its systems could accommodate "eight to 20" users at a time, whereas most competitors only had enough power to accommodate "four to six." [3] CAD/CAM was described by The New York Times as a "computerized design and manufacturing process" that made its debut "when Computervision pioneered it in the 1970's." [1]
Other 1980s major players in CAD/CAM included General Electric [4] and Parametric Technology Corporation; [5] the latter subsequently acquired Computervision, which had been acquired by Prime Computer. [5]
CAD/CAM originated in the 1960s; [6] an IBM 360/44 was used to build via CNC [7] [8] the wings of an airplane.
One goal of CAD is to allow quicker iterations in the design process; [9] [10] another is to enable smoothly transitioning to the CAM stage. [11] Although manually created drawings historically facilitated "a designer's goal of displaying an idea," [12] it did not result in a machine-readable result that could be modified and subsequently be used to directly build a prototype. [13] It can also be used to "ensure that all the separate parts of a product will fit together as intended."[ citation needed ]
CAD, when linked with simulation, can also enable bypassing building a less than satisfactory test version, resulting in having "dispensed with the costly, time-consuming task of building a prototype." [2]
In Computer-aided manufacturing (CAM), using computerized specifications, a computer directs machines such as lathes and milling machines to perform work that otherwise would be controlled by a lathe or milling machine operator. This process, which is called Numerical Control (NC OR CNC), is what came to be known as 20th century Computer-aided manufacturing (CAM), and it originated in the 1960s.[ citation needed ] Early 21st century CAM introduced use of 3D printers . [14]
CAM, although it requires initial expenditures for equipment, covers this outlay with reduced labor cost and speedy transition from CAD to finished product, especially when the result is both timely and "ensuring one-time machining success rate." [15]
Computer-aided design (CAD) is the use of computers to aid in the creation, modification, analysis, or optimization of a design. This software is used to increase the productivity of the designer, improve the quality of design, improve communications through documentation, and to create a database for manufacturing. Designs made through CAD software help protect products and inventions when used in patent applications. CAD output is often in the form of electronic files for print, machining, or other manufacturing operations. The terms computer-aided drafting (CAD) and computer-aided design and drafting (CADD) are also used.
Computer-aided manufacturing (CAM) also known as computer-aided modeling or computer-aided machining is the use of software to control machine tools in the manufacturing of work pieces. This is not the only definition for CAM, but it is the most common. It may also refer to the use of a computer to assist in all operations of a manufacturing plant, including planning, management, transportation and storage. Its primary purpose is to create a faster production process and components and tooling with more precise dimensions and material consistency, which in some cases, uses only the required amount of raw material, while simultaneously reducing energy consumption. CAM is now a system used in schools and lower educational purposes. CAM is a subsequent computer-aided process after computer-aided design (CAD) and sometimes computer-aided engineering (CAE), as the model generated in CAD and verified in CAE can be input into CAM software, which then controls the machine tool. CAM is used in many schools alongside CAD to create objects.
Mastercam is a suite of computer-aided manufacturing (CAM) and CAD/CAM software applications developed by CNC Software, LLC. Founded in Massachusetts in 1983, CNC Software are headquartered in Tolland, Connecticut.
In machining, numerical control, also called computer numerical control (CNC), is the automated control of tools by means of a computer. It is used to operate tools such as drills, lathes, mills, grinders, routers and 3D printers. CNC transforms a piece of material into a specified shape by following coded programmed instructions and without a manual operator directly controlling the machining operation.
Computervision, Inc. (CV) was an early pioneer in Computer Aided Design and Manufacturing (CAD/CAM). Computervision was founded in 1969 by Marty Allen and Philippe Villers, and headquartered in Bedford, Massachusetts, United States. Its early products were built on a Data General Nova platform. Starting around 1975, Computervision built its own "CGP" Nova-compatible 16-bit computers with added instructions optimized for graphics applications and using its own operating system known as Computervision Graphic Operating System (CGOS). In the 1980s, Computervision rewrote their code to operate on Unix-based platforms.
Prime Computer, Inc. was a Natick, Massachusetts-based producer of minicomputers from 1972 until 1992. With the advent of PCs and the decline of the minicomputer industry, Prime was forced out of the market in the early 1990s, and by the end of 2010 the trademarks for both PRIME and PRIMOS no longer existed
G-code is the most widely used computer numerical control (CNC) and 3D printing programming language. It is used mainly in computer-aided manufacturing to control automated machine tools, as well as for 3D-printer slicer applications. The G stands for geometry. G-code has many variants.
Tebis is a CAD/CAM software provided by Tebis AG, with headquarters in Martinsried near Munich/Germany. Development locations: Martinsried and Norderstedt, Germany International locations: China, Spain, France, Italy, Portugal, Sweden, United Kingdom, USA.
Computer-integrated manufacturing (CIM) is the manufacturing approach of using computers to control the entire production process. This integration allows individual processes to exchange information with each part. Manufacturing can be faster and less error-prone by the integration of computers. Typically CIM relies on closed-loop control processes based on real-time input from sensors. It is also known as flexible design and manufacturing.
CAD data exchange is a method of drawing data exchange used to translate between different computer-aided design (CAD) authoring systems or between CAD and other downstream CAx systems.
Direct numerical control (DNC), also known as distributed numerical control, is a common manufacturing term for networking CNC machine tools. On some CNC machine controllers, the available memory is too small to contain the machining program, so in this case the program is stored in a separate computer and sent directly to the machine, one block at a time. If the computer is connected to a number of machines it can distribute programs to different machines as required. Usually, the manufacturer of the control provides suitable DNC software. However, if this provision is not possible, some software companies provide DNC applications that fulfill the purpose. DNC networking or DNC communication is always required when CAM programs are to run on some CNC machine control.
Delcam is a supplier of advanced CAD/CAM software for the manufacturing industry. The company has grown steadily since being founded formally in 1977, after initial development work at Cambridge University, UK. It is now a global developer of product design and manufacturing software, with subsidiaries and joint ventures in North America, South America, Europe and Asia with a total staff of over 800 people and local support provided from over 300 re-seller offices worldwide. It was listed on the London Stock Exchange until 6 February 2014, when it was acquired by Autodesk. It now operates as a wholly owned, independently operated subsidiary of Autodesk.
STEP-NC is a machine tool control language that extends the ISO 10303 STEP standards with the machining model in ISO 14649, adding geometric dimension and tolerance data for inspection, and the STEP PDM model for integration into the wider enterprise. The combined result has been standardized as ISO 10303-238.
Multiaxis machining is a manufacturing process that involves tools that move in 4 or more directions and are used to manufacture parts out of metal or other materials by milling away excess material, by water jet cutting or by laser cutting. This type of machining was originally performed mechanically on large complex machines. These machines operated on 4, 5, 6, and even 12 axes which were controlled individually via levers that rested on cam plates. The cam plates offered the ability to control the tooling device, the table in which the part is secured, as well as rotating the tooling or part within the machine. Due to the machines size and complexity it took extensive amounts of time to set them up for production. Once computer numerically controlled machining was introduced it provided a faster, more efficient method for machining complex parts.
WorkNC is a computer-aided manufacturing (CAM) software developed by Sescoi for multi-axis machining.
Patrick J. Hanratty was an American computer scientist and businessperson, commonly referred to as the "Father of CAD/CAM"—computer-aided design and computer-aided manufacturing. Up to 2013, he was president and CEO of Manufacturing and Consulting Services (MCS) of Scottsdale, Arizona, a company he founded. According to MCS, "70 percent of all 3-D mechanical CAD/CAM systems available today trace their roots back to Hanratty’s original code," although that statistic is not substantiated elsewhere.
The history of numerical control (NC) began when the automation of machine tools first incorporated concepts of abstractly programmable logic, and it continues today with the ongoing evolution of computer numerical control (CNC) technology.
Digital manufacturing is an integrated approach to manufacturing that is centered around a computer system. The transition to digital manufacturing has become more popular with the rise in the quantity and quality of computer systems in manufacturing plants. As more automated tools have become used in manufacturing plants it has become necessary to model, simulate, and analyze all of the machines, tooling, and input materials in order to optimize the manufacturing process. Overall, digital manufacturing can be seen sharing the same goals as computer-integrated manufacturing (CIM), flexible manufacturing, lean manufacturing, and design for manufacturability (DFM). The main difference is that digital manufacturing was evolved for use in the computerized world.
Computer-aided design is the use of computers to aid in the creation, modification, analysis, or optimization of a design. Designers have used computers for calculations since their invention. CAD software was popularized and innovated in the 1960s, although various developments were made between the mid-1940s and 1950s. Digital computers were used in power system analysis or optimization as early as proto-"Whirlwind" in 1949. Circuit design theory or power network methodology was algebraic, symbolic, and often vector-based.
IBM System/360 Model 44 ... AD APT numerical control processor
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