Fitter marking formula? Fitter marking operation method

Study the drawings thoroughly first, and then choose the benchmark. Check that the blank is painted, and mark the line when the tool is selected. Be careful about line accuracy. Finally, I have to punch the eyes.

Scribing: Scribing is divided into three-dimensional scribing and plane scribing. Only one surface of the work needs to be drawn to clearly indicate the processing boundary, which is called plane marking. It is necessary to draw lines on several surfaces of the workpiece at different angles to each other (usually perpendicular to each other), which is called three-dimensional marking.

During machining, dimensional accuracy must be maintained by means of measurements.

Common tools: scribble, scribble, long scribble.

Sawing: A processing method of cutting or grooving a material or workpiece with a saw.

The sawtooth is ahead of its time. Essentials:

Standing posture lunge.

Push back can not grind.

Leaning forward to push the body.

Easy and natural slow cutting.

Corrects skewed retention lines.

The machining allowance should be retained.

Filing: A machining method for cutting a surface with a file.

The types of files can be divided into fitter files, special-shaped files and shaping files. Filing can be divided into forward filing, cross filing, and pushing filing, and the higher the accuracy in turn.

Formula: Hold the handle with the right hand and the front of the left hand.

The forward bow and back pedal should be natural.

Leaning forward to push the body.

Stick to the workpiece and tilt slowly.

Horizontal cross nudge file.

There is no light on the monthly ruler inspection.

Vernier caliper: It is a medium-precision measuring tool, which can directly measure the inner diameter, outer diameter, length, width, depth, etc. of the tool.

Wipe the measuring claws clean with a soft cloth so that they are close together, and check whether the vernier and the zero scale mark of the main ruler are aligned. If it is aligned, it can be measured: if it is not, the zero error is recorded:

The zero tick mark of the vernier on the right side of the zero tick mark of the ruler body is called positive zero error, and the one on the left side of the zero scale mark of the ruler body is called the negative zero error piece.

Vernier calipers are millimeters (10 equal divisions are marked on the vernier ruler.)05 mm (20 aliquots on the vernier scale) and mm (50 aliquots on the vernier scale.)01 mm (100 aliquots marked on the vernier scale) 4 minimum reads.

For measuring tools, handle them with care.

Vices. Marking platform, knife edge ruler, angle flat ruler, knife edge angle ruler.

The fitter marking operation method is as follows:

1. Preparation: Make sure you have the appropriate safety gear, such as gloves and goggles. At the same time, make sure that the work area is clean and tidy, and that the tools and materials are complete.

2. Choose the right tool: choose the right marking tool according to the material and requirements of the line. Common scribing tools include scribing pens, scribing pins, scribing pencils, scribing verticals, etc.

3. Determine the marking position: according to the design requirements and measurement data, determine the position that needs to be marked on the workpiece. Use tools such as rulers, gages, etc., to take accurate measurements, and use a pencil or scribing perpendicular to mark the workpiece.

4. Fix the workpiece: According to the need, use a clamp or clamping device to fix the workpiece in the appropriate position to ensure that the workpiece remains stable during the marking process.

5. Scribing operation: Use the selected scribing tool to mark the line at the marked position. Depending on the need, a ruler or template can be used to aid in line marking, or a scribing needle can be used to mark curves or complex shapes.

6. Control the strength and direction: according to the need, control the strength and direction of the marking tool to ensure the depth and accuracy of the marking. Depending on the material and requirements, you may need to adjust the angle and strength of the scribe tool.

7. Inspection and adjustment: After the marking is completed, carefully check the accuracy and quality of the marking. Adjustments and corrections can be made if needed to ensure that the scribing meets the design and requirements.

The role of the fitter

1. Metal processing: fitters are responsible for cutting, forming, welding, grinding and other processing operations of metal materials using various hand tools and mechanical equipment. They are able to process metal materials into the desired shape and size according to drawings or job requirements.

2. Parts manufacturing: fitters manufacture and process various metal parts, such as bolts, nuts, pins, bearing seats, etc. They are able to manufacture high-quality parts precisely according to the design requirements, using the appropriate tools and materials.

3. Repair and repair: fitters can repair and maintain mechanical equipment, tools and metal structures. They are able to detect and troubleshoot faults and make necessary repairs, replacements, or adjustments to ensure the proper functioning of equipment and structures.

4. Assembly and installation: fitters participate in the assembly and installation of metal structures, mechanical equipment and tools. They are able to properly install and adjust the individual components in place according to the assembly drawings and instructions, ensuring the accuracy and functionality of the assembly.

The fitter must memorize 10 mantras as follows:

1. Be regular, be patient, flexible, and pay attention to safety

Fitter work needs to pay attention to a regular rhythm of work, carefully and patiently complete the work, operate flexibly and skillfully, and pay attention to safety to avoid injury.

2. Measure the size, choose the right material, master the pressure, and weld and weld

In the process of manufacturing, first of all, it is necessary to measure the size, select the right material, master the correct loading and locking tension between the fittings, and optimize the welding and welding process.

3. Proficient in operation with various tools, flexible and handy in application

Fitters need to be proficient in the use of various tools, clearly understand the performance characteristics of each tool, such as compatibility, advantages and disadvantages, prepare for operation, adjust the posture and strength of operation, and respond to all aspects of work comprehensively and flexibly.

The process of fitter is very critical, and it is necessary to continuously improve the process skills through multiple inspections and tests, adopt refined and standardized production management, strengthen quality control, and ensure the quality and effect of the final product.

5. Good at judging the essence and cause of the problem, and solving the problem correctly

Successful fitters need to have the ability to analyze and judge the essence of problems, accumulate and summarize various experience methods, and be good at finding and judging various problems, so they can solve problems correctly and efficiently through their rich experience and knowledge background and professional knowledge.

6. Be good at listening to others' opinions, carry forward team spirit, and establish a sense of social responsibility

Fitters need to become a person who is good at listening, has the ability to communicate and collaborate, carries forward team spirit, actively learns from others, and cultivates a sense of responsibility and mission for the society.

7. Pay attention to safety knowledge and strengthen safety protection

Fitters need to pay attention to safety knowledge and protection, master relevant regulations, safety standards, emergency measures and other safety knowledge, and achieve comprehensive safety guarantee from the theoretical level to the practical level.

8. Turn ideas into action and establish a successful work plan

Fitters should turn ideas into action, regularly formulate reasonable work plans, make appropriate adjustments in combination with the actual situation at the moment, implement various details of management, and report progress in a timely manner.

9. Increase their own learning and training and improve their overall quality

A successful fitter in modern society needs to continue to learn, constantly master new technologies, and constantly improve their overall quality. Fitters need to pay attention to the latest trends in the development of the industry, master new technologies and new methods, participate in quality training courses, and constantly improve their knowledge system, so as to achieve compliance with market demand with updated capabilities.

10. Strive for efficient work and establish a good personal brand

Fitters need to strive for efficient work, using their excellent skills and experience to solve problems quickly and provide advice. Adhere to the development of customer needs as the center, collective honor as their own responsibility, personal behavior as the brand values, to create a good personal brand image, so as to get more opportunities and opportunities for success.

Expand your knowledge:

Draw out the benchmark and processing limit required for processing, check whether the wool cultivation is qualified, and allocate the processing allowance on each side.

Scribing is an important process in machining, which is widely used in single parts or small batch production. In foundry enterprises, the first piece of the new mold can be marked and tested, which can find the problems in the size and shape of the casting in time, and take measures to avoid the loss caused by batch failure.

The functions of fitter marking are:

1.Determine the previous machining position and machining allowance of the workpiece.

2.It can comprehensively check whether the shape and size of the blank conform to the drawing and whether it can meet the processing requirements.

3.In the case of defects in the blank, the "borrowing" method is also used when scribing. to achieve possible remediation.

4.According to the marking line on the sheet, the material can be discharged correctly and the material can be used reasonably.

The methods of fitter marking and marking are:

1) Selection of datum The points, lines and surfaces on the workpiece that are used to determine the position of other points, lines and surfaces.

2) The selection of the marking datum The plane scribing generally selects 2 scribing datums, and the three-dimensional scribing selects 3

a.Two centerlines perpendicular to each other.

b.Two planes perpendicular to each other.

c.a centerline and a plane perpendicular to it.

3) Alignment and borrowing of scribing.

Due to some reasons, all kinds of castings and forgings will form defects such as crooked shapes, eccentricities, and uneven wall thickness of each part. When the shape and position error is not timely, it can be remedied by the method of scribing alignment and borrowing.

a.Alignment is the use of the scribing tool to make the relevant surface on the workpiece and the plane in a suitable position.

b.Borrowing is to reasonably distribute the machining allowance of each processing surface and borrow each other through trial drawing and adjustment, so as to ensure that each processing surface has sufficient machining allowance, and errors or defects can be eliminated after processing.

Scribing is to use the scribing tool to draw the contour line of the part to be processed or the points and lines used as a datum on the blank or workpiece, which indicate the shape, size or characteristics of a certain part of the workpiece, and determine the size limit of the processing.

From the fourth edition of "Fitter Technology" I learned this version. I've seen this issue on other versions, but it's all the same. Because this one is relatively easy to find, I answered it, I hope it will help you.

Line drawing can be divided into two types: flat line drawing and three-dimensional line drawing.

1.Plane line drawing: It is a line drawing method that only needs to draw a line on one surface of the workpiece, that is, the processing boundary of the workpiece can be clearly displayed.

2.Three-dimensional line drawing: It is a method of drawing lines on the surface of several non-square keys of the workpiece at the same time, so as to clearly indicate the processing boundary of the workpiece. In many cases, three-dimensional line drawing is a line drawing for casting and forging blanks.