What do you mean by quirks?

(26) When machining eccentric workpieces, a counterweight must be added and fastened firmly. Don't brake too hard and spin too fast. The way to fix the counterweight on the panel is generally through the pressure plate, that is, through friction, to adjust the position of the counterweight. As long as it is not processed in large quantities, it will not be nailed to position. In this case, if the brake is too hard and the rotating speed is too high, the huge centrifugal force will shift or throw the balance weight, which is easy to cause industrial accidents. This kind of accident happened in our unit, but fortunately we didn't hit anyone. Originally used to process large pieces, they are all hung at low speed. Because the lathe operator put it in the wrong gear and put it in the high-speed gear, the car flew out as soon as it started the balance weight.

How to process eccentric workpiece with ordinary lathe. Ordinary lathe can turn eccentric workpiece by installing four claws on the lathe.

Lathe is a machine tool that mainly turns rotating workpieces with turning tools. On the lathe, you can also use drills, reamers, taps, dies and knurling tools for corresponding processing. Lathe is an important tool for human production and labor and an important symbol of the development level of social productive forces. Ordinary machine tools have experienced a history of nearly 200 years. With the development and comprehensive application of electronic technology, computer technology and its automation, precision machinery and measurement technology, a new machine tool with electromechanical integration-CNC machine tool has emerged. Once used, CNC machine tools show their unique advantages and strong vitality, which makes many previously unsolvable problems find scientific solutions. In China's manufacturing industry, CNC machine tools are more and more widely used, which is the embodiment of an enterprise's comprehensive strength.

What does Turner mean? "Turner" is a polysemous word with three meanings:

1, Turner-lathe operator:

The workpiece position of the lathe operator refers to the installation of the site, machine tools and auxiliary equipment fixtures he uses. There are: lathes, cutters, measuring tools, blanks, finished product stacking, and other accessories. The arrangement of jobs not only affects productivity, but also has a great relationship with physical consumption. Sometimes, although advanced technology and advanced fixtures are used, if you can't arrange your jobs reasonably, you will take thousands of steps in vain a day, wasting time and making yourself feel very tired. Therefore, we must attach great importance to the reasonable organization of jobs. In order to avoid production hectic or unsafe factors.

2, lathe machining method:

Turning is a method of machining with lathe. Lathe is mainly used to process all kinds of revolving surfaces, such as inner and outer cylindrical surfaces, conical surfaces, forming revolving surfaces and end faces. Lathes can also process threaded surfaces. If the hole processing tools (such as drill, reamer, etc. ), the inner circular surface can also be processed.

3. Books published by Turner -20 10 Chemical Industry Press:

Turner is a book published by Chemical Industry Press.

The content mainly includes the basic knowledge of turning, turning tool and turning, and the turning methods, operation steps and essentials of shaft, sleeve, conical surface, forming surface and threaded parts.

It is a practical operation method to tell the practical work experience accumulated in on-site production, and it is easy to understand, learn and master, so that beginners can master the operation skills quickly and systematically.

What does a lathe worker mean? Lathe workers can also be interpreted as lathe operators. The workpiece position of the lathe operator refers to the installation of the site, machine tools and auxiliary equipment fixtures he uses. The arrangement of jobs not only affects productivity, but also has a great relationship with physical consumption.

Skill requirements

As a lathe worker, you must master the following basic knowledge:

1. Seriously study and understand the parts, components and mechanisms of various lathes and their relationships. In order to use the lathe correctly and troubleshoot. Familiar with the oil injection hole of lathe.

2. Correct use of lathe accessories and tools, cutting tools and measuring tools, and be familiar with their construction and maintenance.

3. Be familiar with drawings and processes. And can process parts according to drawings and process requirements.

4. Master the calculation of turning workpiece.

5. Understand the performance and heat treatment knowledge of common metal materials.

6. Correctly identify the position of your own workpiece (the workpiece is stacked, and the coarse and fine points are opened).

7. How to save raw materials and improve labor productivity? Ensure product quality and reduce cost.

8. Be able to consult relevant technical manuals.

grading

There are five levels of this profession, namely: primary (national vocational qualification level 5), intermediate (national vocational qualification level 4), advanced (national vocational qualification level 3), technician (national vocational qualification level 2) and senior technician (national vocational qualification level 1).

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Basic knowledge of lathe: the performance and processing range of various lathes, drawing recognition and simple drawing, the types of tools, how to choose tools and the sharpening of various tools. How to choose grinding wheel sharpening tools? These should be the most basic.

Chapter 1 Types and Structure of Lathe

1. Introduction

2. The classification of lathe

3. The structure of the lathe

Chapter II Operation Method of Lathe Mechanism

1. Transfer

2. Express and local trains

3. Manual longitudinal feed operation

4. Manual lateral feed operation

5. Self-service longitudinal feed operation

6. Self-service cross-feeding operation

7. Thread turning mechanism operation

Chapter III Safety and Maintenance of Lathe

1. Lathe safety

2. Maintenance of lathe

The fourth chapter is the calculation method of belt connection and revolution.

1. Belt type

2. The relationship between belt and horsepower

3. Quick connection method of belt

4. Belt installation method

5. The solution of belt length

6. The application of belt buckle (belt card)

7. Calculation method of rotating speed

Chapter V Types and Uses of Chuck

1. Type of chuck plate

2. Loading and unloading of chuck plate

3. Selection of chuck plate

4. Matters needing attention in the use of chuck plate

Chapter VI Method of Punching Needles with Workpieces

1. Centering method

2. Top pinhole (center hole)

Chapter VII Turning Tools and Sharpening Methods

1. The function of turning tool and its influence on work

2. The name and angle of each part of the turning tool

3. Turning tool materials

4. Type and shape of turning tool

5. Sharpening method

Chapter VIII Use of Cutting Fluid

1. The function of cutting fluid

2. Classification of cutting fluid

3. Selection of cutting fluid

4. Casting method of cutting fluid

Chapter 9 Basic Cutting Theory

1. Some terms about cutting

2. The relationship between productivity and time factors

3. Factors that determine productivity

4. Calculation of cutting speed and headstock speed

5. Calculation of feed depth (horizontal feed)

6. Calculation of the time required for the outer ring of the automobile to make one turn

7. Relationship among cutting speed, feed speed and feed depth

Chapter 10 Alignment of Work Objects and Preparation before Driving

1. Alignment of work objects

2. Work object alignment method

3. Preparation before driving

4. Precautions for installing turning tool

Chapter XI Cars and Planes

1. What is an airplane?

2. Plane turning method

3. Lathe plane between thimbles

4. Machining the plane with a lathe on the chuck.

5. Plane inspection method

Chapter XII excircle and embossing engineering

1. What is the "excircle" of a car?

2. External circle principle and matters needing attention.

3. Calibration method of front and rear thimbles

4. Roughly cut the excircle

Step 5 polish the excircle

Step 6 File the excircle

Step 7 polish the excircle

8. Accessories for cylindrical applications

9. Cylindrical embossing processing

Chapter 13 Slotting and Cutting of Axle Table

1. Definition and function of pillow block

2. Type of pillow block

3. Rough machining of the pillow block

4. Cutting the headstock smoothly

5. Turn of the groove

Step 6 cut the workpiece

Chapter XIV Drilling and Drilling Work

1. What is drilling and drilling?

2. Tools used in drilling

3. Grinding method of drill bit

4. Cutting speed and feed when drilling with a drill.

5. Calculation of headstock speed during drilling.

6. Cutting fluid used in drilling

7. The operation method of drilling

8. Tools used in drilling

9. The influence of boring cutter position on cutting action.

10. Drilling method

1 1. Drilling and boring fittings

12. Boring the inner shoulder

13. Boring inner groove

14. Drilling and hole withdrawal

Chapter 15 Car Withdrawal and Angled Working Objects

1. Definition and use of withdrawal

2. Types of withdrawal

3. Take back the names and symbols of all departments.

4. Definition of taper and retraction per foot

5. Calculation of taper angle

6. Pull back to build a car

7. Measurement method of extraction

8. Angled workpieces and their uses

9. Method of rotating an angled workpiece

10. Angle measurement method

Chapter 16 Thread Turning Work

1. thread formation and its use

2. Thread type

3. The name of each part of the thread

4. Wheel change calculation when turning threads

5. Installation method of gear shifting

6. Thread turning method (55 or 60 V shape)

7. The problem of screwing when turning threads.

8. Turning method of square thread

9. Turning method of trapezoidal thread

10. Internal thread processing

Chapter 17 The Odd Work of Cars

1. Definition and function of eccentricity

2. Turning method of eccentric workpiece

3. Calculation of gasket thickness when the car is eccentric on the self-tapping chuck plate

The car is eccentric between the front and rear thimbles.

5. Turn the eccentric device on the single-acting chuck plate.

Chapter 18 Bending Workpieces

1. Bending workpiece

2. Turning method of bending workpiece

Chapter 19 Work of Panel

The application of 1. panel

2. Panels and accessories for clamping workpieces

3. Several methods of panel workpiece clamping

4. Matters needing attention in panel work

Chapter 20 Overview of High Speed Cutting

1. General introduction

2. Comparison between ordinary cutting and high-speed cutting

3. The use conditions of high-speed cutting lathe

4. Brand and application scope of high-speed cutting tool materials

5. Welding of cemented carbide tool tip

6. Thermal problems of high-speed cutting

7. Tool shape

8. Operating specifications that should be observed during high-speed cutting.

9. Safety problems of high-speed cutting

10. Maintenance of high-speed cutting lathe

Do lathe workers and lathe workers mean the same thing? 1. The lathe operator's workpiece position refers to the installation of auxiliary equipment, machine tools and fixtures he uses. There are: lathes, cutters, measuring tools, blanks, finished product stacking, and other accessories. The arrangement of jobs not only affects productivity, but also has a great relationship with physical consumption.

1. The main responsibilities and work contents of the lathe operator position are as follows:

① Strictly implement the general job responsibility standards of front-line employees.

(2) Be familiar with and master the drawings and technical requirements.

③ Check the tooling and measuring tools in advance.

(4) Check whether the equipment is normal and the oil circuit is unblocked.

⑤ Check whether the blank and semi-finished products meet the processing requirements.

⑥ Assist inspectors in sampling inspection.

⑦ Complete the handover procedures of semi-finished products.

⑧ Do a good job in the relationship between the upper and lower procedures and be polite to others.

Pet-name ruby do a good job in the maintenance and storage of equipment and its accessories.

Attending with oiler to do a good job of equipment lubrication.

? Assist the repairman when the machine tool breaks down.

2. The main requirements of lathe operator post are as follows:

(1) study hard, learn more about all kinds of lathe parts, components, institutions and their relationships. In order to use the lathe correctly and troubleshoot. Familiar with the oil injection hole of lathe.

(2) the correct use of lathe accessories and tools, cutting tools and measuring tools, familiar with their structure and maintenance.

(3) Familiar with drawings and technology. And can process parts according to drawings and process requirements.

(4) Master the calculation of turning workpiece.

⑤ Understand the properties and heat treatment knowledge of common metal materials.

⑥ Correctly understand the position of your own workpieces (the workpieces are stacked and the coarse and fine points are open).

⑦ How to save raw materials and improve labor productivity. Ensure product quality and reduce cost.

Be able to consult relevant technical manuals.

Second, turners are divided into CNC turners, CNC turners, ordinary turners and turners. A machine tool that mainly uses lathe tools to rotate rotating workpieces. On the lathe, you can also use drills, reamers, taps, dies and knurling tools for corresponding processing. Lathe, also known as machine tool, is mainly used for machining workpieces with revolving surfaces, such as shafts, disks and sleeves, mainly cylinders, and is the most widely used machine tool in machinery manufacturing and repair shops. Milling machines, drilling machines and other rotary machining machines are all drawn from lathes.

1, lathe work mainly includes the following contents:

(1) Improvement and innovative design of production equipment in the whole plant. According to production needs, technical requirements are put forward for the equipment to continuously improve the safety, accuracy, stability and efficiency of the equipment;

(2) Requirements on the name, specification and quantity of materials to be purchased for equipment renovation;

(3) A series of work such as equipment installation, debugging, troubleshooting and maintenance;

(4) Guide the mechanical production of metalworking workshop and provide necessary training;

⑤ Cooperate with and support the related work of technical departments, and communicate with production and technical departments irregularly;

⑥ Other matters assigned by superiors.

2. The main requirements of the lathe work post are as follows:

① Major in mechanical manufacturing and mechatronics, college degree or above;

② 10 years working experience or above;

③ Skilled in operating office software and engineering drawing;

(4) Familiar with the manufacturing technology and processing technology of mechanical equipment;

(5) Having intermediate or above titles;

⑥ Have a high degree of work enthusiasm, obey the arrangement, be meticulous and rigorous in work, have a decent style, be willing to share and communicate, and have team spirit.

What do the symbols on the lathe worker's drawings mean? Need details! Learn to look at pictures! 1 1 wallboard QB

12 TGB flume plate

13 beam l

14 WL roof beam

15 crane beam DL

16 monorail crane DDL

17 track connection DGL

18 parking CD

19 ring beam QL

20 lintel GL

2 1 connecting beam LL

22 foundation beam JL

23 staircase beam TL

The problem of turning cone and eccentric workpiece (urgent) The cone angle α is the included angle between two prime lines on the section passing through the cone axis. The cone half angle α/2 is often used for turning. The half angle of the cone is the basis of the rotation angle of the small skateboard. There are two calculation methods.

1)tan(α/2)=(D-D)/2L = c/2； It is troublesome to look up the trigonometric function table for the calculation results.

2) If a/2 is less than 1 ~ 3 degrees, it can be calculated by the approximate method of multiplying by a constant. That is: a/2 = constant ×D-d/L= constant × c.

The constant of D-d/L or C below 0. 10 is 28.7.

The constant of D-d/L or c at 0. 10-0.20 is 28.6.

The constant of D-d/L or C at 0.20-0.29 is 28.5.

The constant of D-d/L or c is 28.4 at 0.29-0.36.

The constant of D-d/L or c is 28.3 in the range of 0.36-0.40.

The constant of D-d/L or c is 28.2 at 0.40-0.45.

For example, this workpiece of yours can be calculated as follows: c =1:6 = 0.1666; Take the constant as 28.6, and a/2 = 28.6× 0. 1666 = 4.76 degrees. You can rotate 4.76 degrees according to the required direction given in the figure to process the small skateboard.

Eccentricity problem

The eccentric workpiece with short length can be turned on the three-jaw chuck. Firstly, the excircle of the non-eccentric part of the eccentric workpiece is turned, then a gasket with a pre-selected thickness is placed between any jaw of the chuck and the joint surface of the workpiece to correct the bus and eccentricity, and then the workpiece is clamped before turning. The thickness of gasket can be calculated by approximate formula; Gasket thickness x = 1.5e (eccentricity). In order to make the calculation more accurate, it is necessary to bring the eccentricity correction value k into the approximate formula to calculate the thickness of the adjusting gasket. The approximate formula is: gasket thickness x =1.5e+k.

k≈ 1.5△e

△e=e-e measured value

Where: e-eccentricity of the workpiece;

K-eccentricity correction value, which is positive and negative according to the measurement result;

△△e—— Eccentricity error measured after trial cutting;

E measurement-eccentricity measured after trial cutting.

Ask the expert to help, there is a lathe worker. 60 bar has three eccentric steps, namely 30, 35 and 40, and the highest points of the three steps are required to be in a straight line. Draw a reticle, and then use a dial indicator to find eccentricity. I can only tell you this.

Let me give you a concrete example. Because you haven't seen the drawings, you take the 40 car first, and then the car is eccentric by 35. Specific operation: For example, if the eccentricity is 3 mm, you should clamp it with four claws, and the reticle on the 40 circle should be basically aligned with the claws, because that is the benchmark for your next eccentricity. Straighten the axis with a dial indicator, and then find the eccentricity, so that the meter head is just 6 mm away from the highest and lowest points on the line, and the readings of the other two meters are the same. Then, if you find the length of the workpiece, punch the center hole first. This is a more accurate method. Look at the drawings specifically.

Personal opinion, for reference only.

What do you mean by lathe worker? Is there a satisfactory answer? The lathe operator may be an intermediate lathe operator. Turning technology classification: there are five grades (5, 4, 3, 2, 1), including primary, intermediate, advanced, technician and advanced technician.

Label: Classic of Composition Previous: A poem describing the elegance of flowers Describe the elegance of poetry Next: What idioms are scratched into what idioms?