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Quick Skills for CNC Operators

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CNC operator all the skills Quick Author: Wei Yunhai, Zhang Zhu Jiang editor published: 2014 Edition Description "CNC operator all the skills to crash" is editor practitioners CNC operators work experience summary and data accumulated for 13 years, in which about CNC programming of The content is mainly based on the Siemens 840D system. The content of the book is divided into 6 chapters and 18 chapters, including mechanical structure and principle, manual operation, processing technology, pattern recognition method, use of tool measuring tools, programming basic G code and use of cycle instructions. "Quick Skills for CNC Operators" uses CNC floor boring machine as the working background, and comprehensively introduces all aspects of CNC machine tool operation related skills, such as the control of CNC machine tools, manual programming of CNC boring and milling programs (mainly based on SIEMENS840D content) Control of NC boring and milling processing cycles (mainly based on SIEMENS840D content), basic structure and working principle of NC boring machines, classification and application of NC boring and milling tools, rapid identification of mechanical drawings, analysis of process methods of machining processes . This book abandons some complicated theoretical guidance, each knowledge point is an operation essential, and is equipped with corresponding detailed physical diagrams and processing examples, allowing readers to quickly identify the diagram and quickly master the use of tool measuring tools.
The first part of the catalog is the structure and performance of CNC machine tools. Chapter 1. The CNC system and its composition. Section 1. Overview of the CNC system. 1. A brief history of CNC development. 2. The current status of the CNC market. 3. Introduction to typical CNC systems. 4. The development of CNC systems. Several major systems of CNC machine tools. 1. The composition of CNC machine tools 2. The CNC system and its control methods 3. The servo system and its working principle 4. The servo control elements 5. The transmission system Chapter 2. The basic mechanical structure of a floor boring machine The first machine tool Connection with the base 1. The layout of the foundation pit 2. The preparation before installation 3. The waterproof and anti-vibration treatment The second section of the X-axis large rail structure and working principle 1. The splicing of the large rail and the static pressure contact with the chassis 2. The column Locking and operation guidance 3. Analysis of the reasons for milling cutters and column crawling 4. Hard limit and the whole system introduction Section 3. Hanging balance of the column 1. Rough adjustment of the column 2. Balance modes of several columns 3. The spindle of the boring machine Gravity balance of the box Section IV Spindle box structure and analysis of each part I. The connection between the head box and the column and the cause of the Y-axis jitter II. The front end of the spindle sinks Question three: Spindle box structure and spindle motor control 4. Spindle torque transmission system and spindle brake 5. Precision and positioning of the spindle and square pillows Section 5 Rotary table structure and operating points Section 6 Machine tool auxiliary systems and equipment Pressure system-contact form between the moving parts of the machine tool II, hydraulic pump station-return flow and pressure output of cutting fluid and hydraulic oil III, several basic structures of chip remover IV, use of machine tool attachment heads Boring and milling machine panel operation Chapter III Use of operation panel and machine tool operation Section 1 Duties of CNC operation work 1. Necessity of manual operation 2. Duty of manual operation 3. Characteristics of large machine operation Section 2 Switching on and off method Section III Composition and Operation of CNC System Panels I. Composition of Panels II. System Soft Key Control Area III. CRT Display Area IV. Letter Keyboard Area IV. Composition and Operation of Machine Tool Control Panel One section parameter mode 1, tool compensation two, R parameter three, setting data four, zero offset five, user data six, effective zero offset + compensation second section Sequence mode 1. Program storage location and selection 2. Program management 3. Program editing 4. Program simulation 5. Panel main interface operation in AUTO mode 6. Machine operation during program execution 3. Service mode 4. Section Diagnostic Mode Section 5. Startup Mode 1. Machine Data 2. Secondary Functions 3. Directory Tree Hidden Section 6. CYCLE800 Plane Coordinate Conversion 1. Basic Format 2. Recompile Operation 3. Note 4. Parameter 5. Example Analysis Chapter 3 Understanding of Processing Technology and Drawings Chapter 5 CNC Boring and Milling Processing Technology Section 1 Machine Tool Axis and Coordinates 1. Name and Classification of Machine Tool Axis 2. Machine Coordinate System Section 2 Geometry and Calculation 1. Coordinate Determination of direction 2. Plane 3. Point representation method-Cartesian and polar coordinates 4. Absolute and relative coordinates 5. Calculation and application of trigonometric functions Section III Tool cutting parameters 1. Linear speed Vc
Second, the feed amount f
Third, the feed speed Vf
Fourth, the amount of cutting knifeFive, the order of selection of chip parametersSix, the selection and adjustment of cutting toolsThe fourth section of the choice of milling method, the concept of down milling and down milling Second, the characteristics of down milling and down milling Technical proof of milling Section 5 Use of tool compensation Section 6 Clamping, positioning, sub-coordinates 1, restrictions on the degree of freedom of the workpiece space 2, workpiece placement 3, workpiece adjustment 4, compaction 5, positioning reference 6, coordinates Dividing Section 7 Metal Materials and Heat Treatment Section 8 Machining Process Technology Analysis I, Process II, Work Step III, Process Method Analysis IV, Process Examples Chapter VI Mechanical Drawings Section I Basic Knowledge of Recognizing Drawings I Drawing Structure 2. Recognize the dimensions 3. Projection method of the composition Section 3 View 3 Section 3 Basic shape view 1 、 Prism 2 、 Pyramid 3 、 Cylinder 4 、 Cone and round table 5 、 Sphere 4 Section 4 Combination view 1 、 Intersection line Intersection line Section 5 Basic image reading method Section 6 Sectional view and partial, rotation and other views 1. Sectional view 2, Partial and rotation and other views 3. Section 4. Simplified drawing method Drawing method 1, hole two, threaded hole three, thread technical parameters and representation method four, gear eighth section tolerance and fit one, dimensional tolerance and fit two, shape and position tolerance three, surface roughness section nine complex pattern reading I. Global II, Hole III, Face IV, Cube Hole V. Other IV. CNC Machining Tools and Measuring Tools Chapter 7. Tool Material and Classification Section I. Tool Material I. High-speed steel II. Carbon tool steel, alloy Tool steel III, cemented carbide IV, coating V, ceramic VI, diamond cutter VII. Development direction of tool materials Section II Introduction of representative tool manufacturers I. Swedish Sandvik Group II. German Walter Co., Ltd. 3. German Cobalt Group 4. German Comat Group 5. German Landmark Group 6. Swedish Seco Tools Co., Ltd. 7. Israeli Iscar Company 8. Korean Tecco Tool Company 9. American Kenner Metal Co. Ltd. 10. 11. Japanese Mitsubishi Materials Co., Ltd. 11. American Stram Company 12. Zhuzhou Diamond Cutting Tools Co., Ltd. Section 3 Structure and Classification of CNC Boring and Milling Tools BT or HSK connection between tool holder and spindle 2. Connection between tool holder and tool 3. Classification of boring and milling tools Chapter VIII Boring and milling processing tools Section 1 Drilling tools 1. Drills-roughing tools for holes 2. Taps-Internal thread processing tools III. Reamers-Pin hole processing tools Section II Boring tools I Rough boring tools II Fine boring tools III Anti-scraper (detachable blade type)
4. Overall anti-scraper 5. Reaming knife III. Milling cutter 1. Rough milling cutter 2. Fine milling cutter 3. Stick milling cutter 4. Three-side cutting edge (grooving)
V. Thread milling cutters 6. Technical parameters of milling cutters Section 4 Application examples of cutters I. Digging solid grooves, oblique insertion machining 2. Large boring cutters, limited space machining 3. Fine boring cutters, step hole machining 4. Drilling, Thin plate vibration processing, CYCLE83 solve five, ordinary drills, deep hole processing, front tip and back angle problems six, shallow hole drill (with core), drilling speed seven, deep hole processing guidance problems eight, shallow hole drill blade Orientation issues IX. Milling cutters-reverse milling during fine milling to prevent slipping. 10. The best position for milling cutters. 11. Face milling cutters. 12. Analysis of cutting plan for milling cutters. 13. Rough milling (cutting) Chip removal problems when deep straight grooves or round grooves. 14. Adjustment of the cutting position and operator's observation position during milling. 15. Issues with the aspect ratio of the milling tool. 16. Issues with the wear of side precision milling cutters. 9. Chapter Measuring Tools Section 1 Linear Vernier Gauges I. Vernier Calipers-Representatives of Linear Vernier Classes 2, Vernier Depth Rulers III, Calipers with Meters IV, Digital Calipers Section II Spiral Micrometer Class I, Internal Micrometer (Micrometer Stick)
Two, three-jaw inner diameter gauge Three, thread middle diameter ruler four, outer diameter micrometer third section standard block and sheet type one, standard gauge block two, feeler gauge fourth section dial indicator, lever table and inner diameter table use 1, The use of dial gauges 2, the use of leverage tables III, the use of internal diameter tables Chapter 5 Programming Basics Chapter 10 Basic G Code Section 1 Features of Manual Programming and Learning Points in this Chapter 1. Features of Manual Programming 2. Learning in this Chapter Key points Section II G code instructions and function comparison Section III Program writing rules 1. Basic structure of the program 2. Sequence of code instructions in the program section 3. Meaning and use of characters and special characters 4. Composition of program function instructions ——Address + Numbers Section 4 Position Control Data Instructions 1. G90 / G91 instructions 2. DC / ACP / CAN instructions — Absolute dimensions for rotary axes 3. G70 / G71 instructions — Metric / Inch measurement 4. Commands that can set the zero offset V, G17 / G18 / G19 command-work plane selection VI, G25 / G26 command-working area limit VII, G74 command-reference point operation (ie return to reference point)
Section 5 Axis Displacement (Machine Motion) Instructions I. Polar Coordinate Instructions G110 / G111 / G112 / AP / RP
Second, rapid movement instruction G0
Three, linear interpolation instruction G1
Four, circular interpolation instructions G2 / G3, I, J, K
Five, 3D arc processing instructions CIP, CT
Section 6 Chamfering and Rounding Instructions Section 7 Spiral Interpolation Instructions Section 8 Tapping Instructions I. Rigid Tapping Instructions G331 / G332
Second, flexible tapping instruction G63
Section 9 Feed Control Instructions I. Definition of G93 / G94 / G95 and F / FGROUP / FGRE Instructions II. Feedrate Mode Instructions G93 / G94 / G95
Third, the feed rate instruction F / FB / OVR
Dwell time command G4
V. Feedrate optimization instruction-special control of path speed in arc milling Section 10 spindle control 1. Machine positioning axis instruction POS / POSA / POSP
Second, the spindle movement instruction S / SPCON / SPCOF
Three, spindle positioning instruction SPOS / SPOSA / M19
Chapter 11 Motion Path Characteristics Section 1 Positioning, Continuous and Chamfering Instructions 1, G60, G9, G601, G602, G603 Instructions 2, G64, G641, G642, G643, G644, ADIS, ADISPOS Instructions Section Two Auxiliary Control Instructions I. Machine axis acceleration characteristic control instructions II. Pre-control operation instructions III. Programmable contour accuracy instructions Section III Detour Feature Instructions I. NORM instruction II KONT instruction III KONTC / KONTT Instruction IV. Programming Example 1
Five, programming examples 2
Section 4 Corner Characteristics Instructions I. Intersection Transition Instructions G451
Second, the arc transition instruction G450
Third, the transition trajectory control instruction DISC
Fourth, the processing example Section five flexible approximation I, parameter interpretation two, detailed explanation of the approximation function three, detailed explanation of the exit function four, approach and exit direction five, application examples six, processing examples
* VII. Intersection contour protection instruction G460 / G461 / G462
* 8. Contour conflict monitoring (CDON is enabled, CDOF is disabled)
Chapter 12 Framework-Programmable Workpiece Coordinate Operation Section 1 Control of Workpiece Coordinates Offset Rotation in the Program Section 2 Programmable Zero Offset I. Instruction Explanation II. Function Use III. Function Example IV. Application Examples Section 3 Programmable Rotation 1. Explanation of Instructions 2. Function Use 3. Determination of Rotation Direction and Angle 4. Processing Example 1—Plane Rotation 5. Processing Example 2—Space Rotation 6. Processing Example 3—— Frame rotation 7. Programming frame rotation (with solid angle)
Section 4 Programmable Scaling 1. Instruction Explanation 2. Function Use 3. Function Example 4. Processing Example 5. Programmable Mirror 1. Instruction Explanation 2. Function Use 3. System Control: Machine Tool Data 4. Processing Example The sixth section produces a frame after tool setting
TOROT
3.PAROT
Section 7 Cancellation Framework Chapter 13 Program Operation and Subroutine Call Section 1 Program Operation Parameter R
I. Example 1
Second, example 2
III. Calculation method IV. Assignment and calculation in canned cycle Section 2 Program jump 1. Absolute jump instruction GOTO
Second, the block repeat instruction REPEAT
Third, the conditional jump instruction IF
Section 3 Subroutine Calling Chapter 6 Fixed Cycles-Specific Processing of Holes and Contours Chapter 14 Hole Processing Cycles Section 1 CYCLE81-Point Holes or One Drill to the End 1. Basic Format and Function 2. Parameter Three 4. Cycle commonality 4. Drilling action 5. Processing example Section 2 CYCLE82——Scraping plane cycle 1. Basic format and function 2. Processing example Section 3 CYCLE83—High-speed deep hole drilling cycle 1. Basic format 2. Parameters 3. Provision of pause time 4. Drilling action during chip removal 5. Drilling action during chip breaking 6.
The calculation of the first drilling depth and decrement 7. The machining example. Section CYCLE85—the hinge pin cycle. 1. The basic format and function. 2. The parameter 3. The drilling action. 4. The machining example. 5. The CYCLE89—boring. , G1 Withdrawal 1. Basic format and function 2. Processing example. Section 6 CYCLE88-Boring 1. Basic format and function 2. Parameter 3. Notes 4. Processing example. 7. CYCLE87-Boring, hole Bottom spindle stop Section 8 CYCLE86——Fine boring, SPOS at the bottom of the hole, Reverse tool first, Basic format and function Two, Parameter three, Drilling action Four, Precautions 5, Processing example Chapter 15 Thread processing The first section CYCLE90-thread milling 1. Basic format and functions 2. Parameters 3. Precautions 4. Tool detection 5. Drilling operations 6. Processing examples Section CYCLE84-Rigid tapping 1. Basic format and Function two, parameter three, tapping action four, processing example third section CYCLE840-flexible tapping one, basic format and function two, parameter three, tapping action four, ENC calculation mode Chapter 16 hole position and The first section of long groove machining HOLES1—— Row hole point control 1, basic format and function 2, parameter 3, cycle 4, processing example Section 2 HOLES2-circular hole array point 1, basic format and function 2, parameter 3, cycle 4, Processing example Section CYCLE801-grid hole point position 1, basic format and function 2, parameter three, cycle four, processing example section LONGHOLE-long groove milling arranged in circular arc, slot width is uncontrollable 2. Basic format and function 2. Parameter 3. Cycle 4. Calculation method of feed depth 5. Milling operation 6. Processing example 5. Section SLOT1—Slot milling with circular arcs. The width of the groove can be controlled. 1. Basic Format and function two, parameter three, cycle four, complete set of machining operations for rough and fine milling five, machining example sixth section SLOT2-milling of circular grooves arranged in circular arc, controllable groove width one, basic format and function two, parameter Number three, matters needing attention, four, a complete set of roughing and finishing milling operations, five, processing examples, Chapter 17, trenching processing, the first section POCKET1-rectangular solid slot, one, the basic format and function two, parameters three, milling action four, Processing example Section 2 POCKET2 ―Digging circular solid grooves 1, basic format and function 2, parameter 3, cycle 4, milling action 5, machining example 3, POCKET3-digging rectangular hollow groove 1, basic format and function 2, parameter 3, cycle 4. Machining Actions 5. Machining Examples Section 4 POCKET4——Digging Hollow Hollow Slots 1. Basic Format and Function 2. Parameter 3. Cycle 4. Machining Examples 5. Machining Examples Chapter 18 Contour Machining Section 1 CYCLE71 ——Plane allowance milling 1. Basic format and function 2. Parameter three. Cycle 4. Milling action 5. Processing example 2. CYCLE72 — Contour cut-in method 1. Basic format and function 2. Parameter three and cycle 4. 5. Roughing and milling operations 5. Processing example III. CYCLE76-square block processing 1. Basic format and function 2. Parameter 3. Cycle 4. Milling action 5. Processing example 4. CYCLE77 — cylinder processing 1. Basic format and function two, parameter three, milling action four, processing example Section CYCLE60-lettering program one, basic format and function two, parameter three, cycle four, milling action five, plus Examples

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