The setup and operation times for each machine are given in the table below. These slots allow the light source to shine through and energize the photodetector. Groover is Professor Emeritus of Industrial and Systems Engineering at Lehigh University, where he taught and did research for 44 years. A new programmable machine has been purchased by the shop that is capable of performing all ten operations in a single setup. The section on machine vision has been updated to include recent advances in camera technology. Below article will solve this puzzle of yours. Coverage of parts classification and coding has been reduced, and the Opitz system has been relocated to an appendix.
The system is programmed to respond to unsafe conditions in some appropriate way, such as stopping the system or sounding an alarm. Each of the machines can be set up for any type of job processed in the plant. The lead screw has 2. Answer: As defined in the text, an automation migration strategy is a formalized plan for evolving the manufacturing systems used to produce new products as demand grows. For the one machine, nonoperation time is expected to be 12 hours.
Solution: This problem neglects the effect of assembly time. Keep Your Course Current: This edition provides up-to-date coverage of production systems, how they are sometimes automated and computerized, and how they can be mathematically analyzed to obtain performance metrics. A discrete measuring device produces an output that can have only certain values. Welcome to EasyEngineering, One of the trusted educational blog. Determine a the number of pulses and b the pulse frequency required to achieve this movement. Answer: The four possible strategies identified in the text are 1 make adjustments at the end of the current work cycle to recover from the malfunction, 2 make adjustments during the current cycle, 3 stop the process to invoke corrective action, and 4 stop the process and call for help. The problem is that the setup workers represent a bottleneck.
Examples include direct labor, raw materials, and electric power to operate the production equipment. If they do, those details are in the appendix. The piston rod has a diameter of 0. When the wheel rim is pressed against the surface of the rotating workpiece, the tachometer provides a reading of surface speed. The lead screw has 2. However, an average of 15% of the production time is lost is lost due to machine breakdowns. Answer: A transfer function is the relationship between the value of the physical stimulus and the value of the signal produced by the sensor in response to the stimulus.
Answer: As defined in the text, industrial control is the automatic regulation of unit operations and their associated equipment as well as the integration and coordination of the unit operations into a larger production system. Answer: An active sensor is one that responds to a stimulus without the need for any external power. Answer: A contact input interface is a device by which binary data are read into the computer from some external source e. Disclaimer: This site does not store any files on its server. Answer: The three basic elements of an automated system are 1 power to accomplish the process and operate the system, 2 a program of instructions to direct the process, and 3 a control system to actuate the instructions.
The number of step angles on each stepping motor is 200. Each product will be assembled of 400 components. It is the time between when one work unit begins processing or assembly and when the next unit begins. Determine a the required number of pulses and b the pulse frequency to achieve the specified rotation. Answer: An interlock is a capability by which the controller is able to sequence the activities in a work cell, ensuring that the actions of one piece of equipment are completed before the next piece of equipment begins its activity. You can also find solutions immediately by searching the millions of fully answered study questions in our archive. Rapid move to first hole location.
The new product line will include 90 different models. Answer: As defined in the text, a machining center is a machine tool capable of performing multiple machining operations on a single workpiece in one setup. Understanding Automation, Production Systems, and Computer-Integrated Manufacturing homework has never been easier than with Chegg Study. Answer: Feedforward control is a means of control that anticipates the effect of disturbances that will upset the process by sensing them and compensating for them before they can affect the process. All copyright violation item if any will be removed.
Each large roll contains enough material for 4,000 blanks. Phase 3: Automated integrated production using a multi-station automated system with serial operations and automated transfer of work units between stations. Lean production also implies completing the products in the minimum possible time and achieving a very high level of quality, so that the customer is completely satisfied. The cutter has 16 teeth and is 120 mm in diameter. The operations involve rotating cutters, such as milling and drilling, and the feature that enables more than one operation to be performed in one setup is automatic tool-changing. Groover — Details Book Name Automation, Production Systems, and Computer-Integrated Manufacturing Author Name Mikell P. The hydraulic power source can generate up to 3.
Answer: A pulse counter is a device used to convert a series of pulses into a digital value. In the ideal just-in-time system, each part is delivered to the downstream workstation immediately before that part is needed at the station. Answer: Reasons given in the text are 1 operator interaction is required, so the operator enters the decision, 2 different part or product styles are processed by the system, and the system must decide how to process the current work unit, and 3 there are variations in the starting work units, and decisions must be made about adjustments in the work cycle to compensate. For the positioning system, determine a control resolution, b accuracy, and c repeatability. His publications include over 75 technical articles and 12 books listed below.
Upon receipt of an interrupt signal, the computer system transfers to a predetermined subroutine designed to deal with the specific interrupt. He has received a number of teaching awards at Lehigh University, as well as the Albert G. Answer: The three components are 1 the part program of instructions, 2 the machine control unit, and 3 the processing equipment e. Process variables are outputs from the process; for example, the actual temperature of the furnace, the actual position of the axis, and the rotational speed of the motor. Products are assembled on single workstations consisting of two workers each. Each final unit of product takes 3. Answer: Technological processing capability of a plant or company is its available set of manufacturing processes.