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Viewing 15 posts - 1 through 15 (of 16 total)
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  • in reply to: What is the principle of drilling? #2239
    Amelia doo

    The following are the stages that are included in the process of CNC drilling:
    The operator is responsible for uploading the computer-aided design (CAD) or computer-aided manufacturing (CAM) file and gaining access to it.
    After ensuring that the suitable drill bit is in place, the operator will then secure the specified material on the table.
    Through the control panel or interface, the operator initiates the drilling operation.
    The spindle moves downward, therefore drilling holes of the desired dimension and size.

    After the procedure of the drilling machine has been completed, the operator inspects the material for any flaws that may have been produced.

    Amelia doo

    There are lots of factors to consider when using dimensional measuring equipment.

    – Tolerance Requirements: It is equally as important to ensure that you understand and are able to meet your tolerance requirements as it is to select the appropriate kind of sensor to make use of. Tolerance is a term that is used in dimensional measurement, and it refers to the amount of permitted departure from the desired result. Tolerance is a term that is used in dimensional measurement. On the other hand, a part that is utilized in a toy might have a tolerance that is more in the range of millimeters. This is something that could be present. It will be much simpler for you to choose the suitable kind of dimensional inspection equipment if you have a solid understanding of the required tolerance levels. Take into consideration the difference between using a ruler to measure something and using calipers to perform the same thing. When using calipers, it is possible to achieve a substantially higher degree of accuracy and precision than would otherwise be possible. Take into consideration the disparity in accuracy and precision that can be attained when measuring using calipers as opposed to an indicating micrometer at this point. If your tolerance level is not quite as rigorous as it would be for an indicating micrometer to reach the highest level of accuracy and precision that can be achieved, calipers are an excellent alternative to consider to obtain the highest level of accuracy and precision that can be obtained.

    – Portability: This is a question that most of the time has a simple solution; however, it does narrow the type of equipment that you will need to buy. Will the measurements be done at a fixed location where they may be taken with the equipment staying in one place, or will they be taken out in the field themselves? The choice will nearly always be clear and easy, and it will be based on considerations such as the component’s weight, size, and how fragile it is. Prior to making a purchase, if you are unsure about how you will use the equipment in the future, considerable consideration should be given to how you will use it. Despite the fact that it may be tempting to purchase portable equipment in order to have more freedom, it is possible that you will be giving up other advantages that you could acquire with stationary equipment if portability is not something that you actually want. These advantages can be obtained with stationary equipment. For instance, the precision of a coordinate measuring machine (CMM) that is permanently mounted will be superior to the accuracy of a CMM articulating arm that can be moved about.

    in reply to: content and purposes of production monitoring #1888
    Amelia doo

    Production monitoring is an important form of the quality inspection that involves the checking of multiple stages, and it offers the following advantages:
    1. A major advantage of production monitoring is that it provides a comprehensive view of all the manufacturing activities taking place in the facility. 1. 2. 3. At the outset and during production, as well as at the end of the production process, all three product inspection methods are used. Rather to focusing on a single aspect of a product’s creation, production monitoring provides a comprehensive perspective. If you want to learn more about how your product will perform in the hands of the factory workers, here is a good place to start.

    In addition to keeping track of your items, production monitoring allows you to see how the plant functions. Your inspector will be able to give you an account of how the product and its components were handled by the factory’s employees. They can also identify if the factory’s employees are following proper processes or if there are any best practices missing.

    2. Importers are frequently frustrated by supplier delays in both production and transportation. One of the most common causes of delays is a lack of communication. Importers can better predict and avoid delays that could lead to consumer discontent by keeping an eye on production and, to a lesser extent, by doing product inspections.

    It is possible that even if you place an order with the factory months in advance, there may still be delays. Because factories typically deal with numerous clients at once, this is a factor. Additionally, plant managers place more importance on certain consumers than others. Monitoring the production process allows you to determine whether or not delays are occurring and where they are coming from.

    3. Product faults can be difficult to fix if they are discovered after the product has been manufactured and distributed. When repairing or reworking products, it can be time-consuming and expensive to unpack and repack finished goods. Defects and other issues can be remedied much more easily when discovered early on.

    In order to conduct production monitoring, an inspector must be stationed on-site and verify the product on a daily basis (or nearly so). Because they’ll normally check the goods at every active production stage, the inspector will be able to advise you of any product faults that day. After receiving their report, you can notify the supplier of any problems you’ve discovered so that they don’t affect the rest of the order too much.

    in reply to: CNC lathe programming #1871
    Amelia doo

    These codes (cycles) are commonly used in CNC lathe turning:
    G70 – Finishing Cycle
    This cycle is utilized after one of the roughing cycles and follows the contour that was programmed for the roughing cycle. The ‘P’ and ‘Q’ values are used to locate the profile within the cycle and to execute a finishing cut after it.

    G71 – Roughing Cycle
    The G71 roughing cycle adheres to the programmed contour between the N numbers. It is used to remove material by cutting along the Z-axis and leaving a small amount of material for a finishing cut using the G70 cycle.

    G72 – Facing Cycle
    The G72 roughing cycle adheres to the programmed contour between the N numbers. It functions similarly to the G71 cycle, but is used to remove material via X-axis cutting.

    G73 – Pattern Repeating Cycle
    The G73 cycle is a roughing pattern used in boring and turning. Following this is the G70 finishing cycle.

    G75 – Peck Grooving Cycle
    The G75 cycle is used to groove a larger area than the grooving tool can reach.

    G76- Screw Thread Cycle (Single Line)
    If the machine’s parameters are correctly set, one block can be used to machine a screw thread. Note that this may not work on all lathes or machining centers, so the following technique is also provided.

    G83 – Z-axis Peck Drilling Cycle
    The G83 peck drilling cycle is utilized with live tools to drill offset from the Z-axis centerline.

    G84 – Z-axis Tapping Cycle
    The G84 cycle is used for tapping along the Z-axis when the part’s centerline is not being tapped.

    G87 – X-axis Peck Drilling Cycle
    The G87 cycle is used for peck drilling with live tools on the X-axis.

    G88 – X-axis Tapping Cycle
    The G88 cycle is used for tapping with live tooling on the X-axis.

    in reply to: drill bits for CNC machine (machining) #1868
    Amelia doo

    There are a variety of drills developed for various functions. To distinguish one drill bit from another, it is necessary to examine their differences. Drills can be produced from a variety of materials, have several coatings, and come in a variety of shapes. Choose the drill bit based on the material of the to-be-machined CNC drilling parts and the tool’s features.

    Insert drill bits are typically affordable and may be easily replaced when they become dull, avoiding the need to sharpen the drill. They are also capable of operating without a grinding wheel. Insert drill bits are reasonably simple to use and have a structural point that aids in locating the center of the hole being drilled. However, insert bits can often leave a burr at the hole’s exit, needing post-drilling smoothing procedures. In addition, if this drill bit breaks, it may be necessary to replace the tool holder.

    The majority of drill bits manufactured in the United States are twist drills, which are a significantly more prevalent alternative. The twist drill bit has a corkscrew-like flute pattern. The form and sharpness of the flutes are crucial to the operation of the bit and must often be sharpened with a tool grinder. Occasionally, additional worker training is required to operate a twist drill bit, but aside from grinder and sharpening costs, a single twist bit is typically less expensive than the majority of insert drill bits. In addition, this bit produces less burrs in exit holes, minimizing the need for time-consuming deburring procedures.

    This type of insert drill bit is predominantly used in computer-controlled manufacture. Ceramic inserts act as cutting edges for both the inner and outer reaches of the cut, and a harder cutting tip lowers the frequency with which the blade must be resharpened. Indexable bits are capable of producing holes with a diameter up to five times that of the drill shaft.

    The spade drill bit is a two-part device comprised of a metal body and a detachable bit that is fastened into a precise hole. Typically, the spade bit is built with unique notches along the cutting edge to minimize lengthy chips that can block the drilling region. A spade bit is a device used in hand-tooling rather than automated processes in woodworking.

    Ejector bit: Ejector bits are typically used for deep hole drilling and can be outfitted with a single or several cutting heads. The single-headed variant produces huge radial holes with a single cutting edge on the side. Multiple bits with brazed carbide tips around the center line are commonly utilized to improve cutting balance when making holes with even larger diameters.

    This bit has a flat cutting edge with a sharp center point or screw-like threads, allowing it to drill holes quickly. Due to the possibility of straying when drilling thick materials, the flat bit is frequently paired with a sawdust-removing pumping gear.

    in reply to: What programming language is CNC? #1747
    Amelia doo

    The most basic language used to write programs for CNC machines is called G-code. It is made up of individual lines of code that are arranged in groups called blocks. Each block is responsible for controlling a single CNC machining operation, such as a chopping operation using a particular tool. The letter N and a number are written at the beginning of each line within a block.

    G code is the primary language used in CNC’c, as has been stated previously. It is not a genuine programming language in the sense that is used in the field of computer science. There are variables in the code, but not in the way that a computer scientist would expect them to be there. Offsets for the tools are the primary focus of these discussions. However, this is only applicable to the vast majority of machines. A significant number of the more recent HAAS machines ship with this conversational component as standard for performing fundamental programming at the machine. However, G code is still used internally by the machine, both from CAM packages and at the controller.

    The code only has the most fundamental level of standardization. It is not at all like Python, C++, HTML, or any of the other languages used in computer science.

    in reply to: types of benchmarking in quality management #1672
    Amelia doo

    Benchmarking is an important tool that businesses can use to stay on top of trends in their industry, including those relating to sales, customer service, and other aspects of operations. A company’s performance can be benchmarked against that of other companies, and the process can be used to determine the best standard of performance.

    Benchmarking enables organizations to continuously improve the quality of their products and services by comparing them to their competitors. The current standard is observed and then attempted to be exceeded by organizations. Improved performance: Benchmarking assists organizations in overcoming complacency in their operations. Incorporated into the process of benchmarking is the desire to make continuous improvements and bring about changes in business products, processes, and services. As a result, benchmarking practices help businesses gain a better understanding of their customers’ needs and expectations. This is due to the fact that customers are the most important source of information at every stage of the comparison process.

    Standard definitions of benchmarking include comparing your company’s performance to that of best-in-class organizations, determining how the best achieve those levels of performance, and using that information to guide the development of your own company’s targets, strategies, and implementation.
    Steps to use or apply the benchmarking:
    1. Choose a subject to compare and contrast.
    2. Select the organizations or businesses that you want to use as benchmarks.
    3. Create documentation of your current processes.
    4. Compile and analyze information
    5. Evaluate your performance in light of the information you’ve gathered.
    6. Make a plan.
    7. Put the changes into action.
    8. Carry on with the procedure.

    in reply to: what is a good tolerance for machining #1608
    Amelia doo

    The tolerance limit specifies the maximum difference that can exist between the two parts’ corresponding dimensions. The standard tolerance limit for CNC machining is around +/-. 005″. (0.127 mm).

    Types of Tolerances in Machining
    Standard Tolerances
    Machinists use standard machining tolerances for the most commonly manufactured parts. Standard machining tolerances apply to components such as threads, pins, and pipes. Some milling services have tolerances of +/-0.1mm. Machinists typically apply these tolerances when customers do not specify tolerance levels. Tolerance charts for CNC machining show the typical tolerances for CNC machining. Various international standards bodies, such as the International Organization for Standardization (ISO), the American Society of Mechanical Engineers (ASME), and the American National Standards Institute (ANSI), typically establish the range of standard machining tolerances (ANSI).

    Geometric Dimensioning and Tolerancing
    Geometric dimensioning and tolerancing systems are far more comprehensive than other tolerance systems. It is a type of CNC tolerance that places an emphasis on measurements and allowable deviations. It also specifies the machined part’s geometric properties, such as flatness, concentricity, and true position. Geometric dimensioning and tolerancing are commonly used for extremely precise component dimensions.

    Limit Tolerances
    A limit tolerance is a type of CNC machining tolerance that is expressed as a range of values, with the part considered acceptable if the measurement falls within that range. A limit tolerance of 13 – 13.5mm, for example, indicates that the part’s measurement must fall between the upper and lower limits.

    Bilateral Tolerances
    The deviation from a specified dimension can be either positive or negative when bilateral tolerance is used. This means that it could be slightly larger or smaller. A bilateral tolerance of +/- 0.06mm is an example of this type of tolerance. This means the machined part could be 0.06mm shorter or longer than specified. When it comes to exterior dimensions, bilateral tolerances are commonly used.

    in reply to: What software do I need to run a CNC machine? #1486
    Amelia doo

    To put it another way, this software stands for Computer-Aided Design (CAD). For sketching on the computer, but with dimensions applied to the designs, the CAD software is the best option for you. Your designs will benefit from frequent revisions if you use this tool. In the CNC sector, “blueprints” are created using CAD software.
    A CAM program is a computer-assisted manufacturing program. G-code is generated from a CAD design file that is fed into the software with a lot of help from you. Using G-Code, your CNC machine is able to precisely cut the material.
    Calculator for Feeds and Speeds (F&S) Limited Feed and Speed options are a problem with certain CAM programs. In our yearly polls, poor feeds and speeds were one of the most common concerns concerning CAM Software. The best way to prevent breaking your tools is to have someone show you how to use them from the beginning. If you use a decent Feeds and Speeds Calculator, the process will be a lot easier.
    The CNC machine’s control software is normally preinstalled on the machine itself.

    Best CNC CAM Software
    Fusion 360
    V-Carve Desktop / Pro
    Carveco Maker

    Free CNC controller software / G-code software for CNC:
    GRBL Candle
    Universal Gcode Sender (UGS)
    Openbuilds Control

    in reply to: ABOUT ISO 9000 QUALITY MANAGEMENT SYSTEM #1463
    Amelia doo

    Organizations may use the ISO 9000 family of quality management systems (QMS) to make sure they’re meeting consumer and other stakeholder demands while also adhering to all applicable laws and regulations. The seven quality management concepts that underpin the ISO 9000 series of standards are addressed in ISO 9000. The ISO 9001 standard is concerned with the standards that businesses seeking to comply with the standard must satisfy. ISO 9000 is a collection of quality assurance and management standards that has been widely adopted across the world. As a standard published by the ISO, it strives to promote the creation of products and services that meet an accepted quality standard across the world.

    ISO 9000 family contains these standards:
    ISO 9001:2015: Quality Management Systems – Requirements
    ISO 9000:2015: Quality Management Systems – Fundamentals and Vocabulary (definitions)
    ISO 9004:2018: Quality Management – Quality of an Organization – Guidance to Achieve Sustained Success (continuous improvement)
    ISO 19011:2018: Guidelines for Auditing Management Systems
    ASQ is the only place where organizations can obtain the American National Standard Institute (ANSI) versions of these standards in the ISO 9000 family.

    in reply to: What is the importance of the inspection checklist #1378
    Amelia doo

    1. Using inspection checklists in the workplace is a great way to keep everyone on track and engaged, as well as boost employee confidence in machines and safety protocols. In most cases, checklists may be used to prevent inspections from going on indefinitely. Analyzing workspaces, equipment, and jobs is made simple with this guide’s step-by-step approach. The results of the inspection will be documented in an inspection report when the inspection is completed using your checklist.

    Only by following, adhering to, and executing checklists can they be useful. As well as providing a step-by-step approach for examining machines and work areas as well as safety and health policies and procedures, they avoid hazy inspections and prohibit staff from overlooking crucial components.

    2. For a checklist to be functional, each component required for correct functioning must be examined and the checklist must be unique to the kind of equipment being inspected. The inspection checklist covers all aspects of the product’s physical specifications, packaging and labeling, functional testing, and drop tests.

    in reply to: NC vs CNC, what’s the difference #1298
    Amelia doo

    Numerical Control is abbreviated NC, and Computer Numerical Control is abbreviated CNC. NC Machine programming are stored on punch cards. However, with a CNC machine, programming are entered directly into the computer using a miniature keyboard identical to our standard keyboard.

    in reply to: How would you clean this tool crib? Rust + dust #1225
    Amelia doo

    I put the very rusty parts in the evaporust for a couple hours then scotchbrite the surfaces. If something is being stubborn wire brush. Once the bulk is off I have another plastic bin that I fill with more evaporust and submerge it in the ultrasonic heat it all up to 45c. The ultrasonic waves go right through the plastic and into the the bin with the evaporust. Let it run for 30 min. take it out blow it off. At that point its pretty dang clean. If its something like a floating tap holder I’ll oil the moving parts otherwise just wipe off and blow dry. I was concerned about rust coming back quickly but I have a piece of steel that I have been “testing” for about 9 months sitting in the shop and it has yet for rust to come back.

    in reply to: How would you clean this tool crib? Rust + dust #1111
    Amelia doo

    It’s the underside (spindle taper) that really matters. If they aren’t perfect I probably wouldn’t run them, it’ll ruin the machines spindle.

    Amelia doo

    Yeah u seem to have a good grasp. Good idea to not forget to add an m3 for spindle on as well as rewrite rpm. I usually start from the nearest rapid move and sometimes add a z rapid so that the tool starts closer to the table.Be very careful if you are using incremental coordinates.

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