BS 3641-2-1980 Symbols for machine tools - Specification for numerical control symbols《机床符号 数控符号规范》.pdf

1、Symboles pour les machines-outils Partie 2. Spcification des symboles relatifs la commande numrique Symbole fr Werkzeugmaschinen Teil 2. Spezifikation fr Symbole fr numerische Steuerung BSI BS*3b4L PART82 80 W BS 3641 : Part 2 : 1980 Contents Page Foreword Inside front cover Cooperating organization

2、s Back cover Specification 1. Scope 2. References - 1 1 Foreword This revision of this British Standard has been prepared under the direction of the Mechanical Engineering Standards Committee and implements agreements of the International Organization for Standardization (ISO). It extends the range

3、of symbols specified in Part 1 of this standard. This revision supersedes BS 3641 : Part 2 : 1972, which is now withdrawn. _ _ _ _ - -_ This standard was amended in 1982 to take account of the requirements of BS 5378 : Part 1 : 1980 and the Safety Signs Regulations, 1980 (S.I. 1980, No. 14711, becau

4、se machine tools are used in places of work where the requirements of these regulations apply. Symbols in this standard are intended primarily for purposes of operator information but where a symbol is used for safety reasons attention is also drawn to BS 5378 : Part 1. This Part of this standard is

5、 generally in accordance with Is0 2972-1979 Numerical control of machines - Symbols. 1624bb 0058749 9 Page 4 5. Additional symbols 13 3. Basic symbols 1 4. Symbols to be used on machine tools Appendix A. Examples of the grouping of symbols In symbols 4.10 Programmed stop and 4.1 1 Programmed optiona

6、l stop the qualification with machine functions has been added to correct an omission. In symbol 4.24 Manual data input the form and position of the hand have been improved. In symbols 4.25 Axis control, normal (machine follows program) and 4.26 Axis control in mirror image mode (machine mirrors pro

7、gram) the drawing has been amended so that the symbol and its mirror image are the same size. In symbol 4.54 Pre-warning storage overflow the caution sign has been reshaped slightly to align with BS 3641 : Part 1. In symbols 4.57 Program storage and 4.60 Modify, amend, edit the remark basic symbol h

8、as been deleted as superfluous. The United Kingdom, however, voted against IS0 2979-1979 and this standard differs from it in the following respects. Clause 5 and appendix A have been added* Clauses 3.1,3.2,3.3,3.4.3,3.4.4,3.4.5 (paragraph 1) and 3.5 have been added. Symbols 3.6.8 Reset (basic symbo

9、l), 3.6.9 Cancel, delete (basic symbol), 3.6.10 Do not (basic symbol) and 3.6.12 Modify, amend, edit (basic symbol) have been added. 16 BSI BS*3b4L PART*Z 80 M Lb24bb 0058750 5 M BS 3641 : Part 2 : 1980 British Standard Symbols for machine tools Part 2. Specification for numerical control symbols 1.

10、 Scope This British Standard specifies basic designs for symbols intended for use on indicator plates of numerically controlled (N.C.) machine tools. Drawings in this standard indicate the form of symbols only, and not their absolute dimensions. The standard gives recommendations for proportions to

11、be used in the design of symbols, independent of actual dimensions, and provides for the grouping together of symbols selected according to individual requirements. Examples of groupings of symbols are given in appendix A for guidance. NOTE. An index to BS 3641 : Parts 1,2 and 3 is given in PD 6490.

12、 2. References The titles of the standards publications referred to in this standard are listed on the inside back cover. 3. Basic symbols 3.1 Classification scheme. To facilitate cross reference with IS0 2972-1979, the classification scheme used in other Parts of this standard has not been applied

13、to the listing of symbols in this Part. 3.2 Numbering of symbols. In this Part of this standard, the symbols specified in 3.6 are not given the same number as corresponding symbols in IS0 2972-1979. The symbols specified in clause 4 are given the same number as corresponding symbols in IS0 2972-1979

14、. The symbols specified in clause 5 have no counterpart in IS0 2972-1 979. 3.3 Sizes and proportions. The symbols shown in this standard indicate form only. Where it is necessary to establish actual sizes, the symbols shown may be measured. The absolute size of symbol is at the designers discretion

15、and indeed it may be desirable to have symbols in two different basic sizes to achieve proper display balance. 3.4 The use of the arrow 3.4.1 General. The arrow shape is a unique symbol in relation to all of the symbols in this standard. It rarely appears as an isolated element, but is frequently us

16、ed as the basis for a symbol, or qualifies another symbol to give it additional meaning, 1 There are four different applications of the arrow shape and it is desirable to use a different form in each instance, as shown in 3.4.2 to 3.4.5. 3.4.2 Directional information arrows. The recommended form of

17、a directional arrow is shown on the right, the impor- tant dimensions being the shape and proportion of the head and the associated width of the shaft. OvGall length is not crucial and may be varied to accommodate situations where the arrow is graphically combined with other symbol parts. The curved

18、 form is for rotational information, the per- spective view being superimposed on a shaft representation. 3.4.3 Relative motion information arrows. Where it is not possible to define exactly the direction in space, it is often useful to define relative motion between two machine parts; in this case

19、the truncated arrow heads are used in pairs to define in (or towards) and out (or away from). 3.4.4 Dimension arrows. For symbols where dimensional concepts are required, an open headed arrow with no shaft is used. 3.4.5 Functional arrows. Many symbols require a functional dynamic in the form of an

20、arrow to improve their ease of inter- pretation. It is inappropriate to use the same arrow form as is used to define spatial directions, as the arrow shown on functionai symbols need not imply a specific direction. A heavier, bolder form of arrow is used in these cases. The functional arrow is parti

21、cularly useful and important for building NE. symbols to identify the various control modes. When used with the program symbols (3.6.4 and 3.6.5) it indicates program direction. For forward program direction, the functional arrow points the same way as the program symbol. For backward program direct

22、ion, the functional arrow points the opposite way to the program symbol. BSI BS*3b41 PARTxK2 80 W 162Llbb9 0058751 7 BS 3641 : Part 2 : 1980 3.5 Grouping of symbols. It is comparatively rare for a data axis tool magazine single symbol to be used in isolation. The grouping of transfer execute handwhe

23、el lock index symbols on displays is implicit in their application. These groupings generally fall into one of three types of association. (b) Pairing of symbols to build more complex symbols, eng. feed rate over-ride; end of block; end of program. (c) Association of symbol with value or quantity, e

24、.g. per cent maximum feed rate: full length tool offset. (a) Hierarchical arrangements. One symbol serves as a general label or heading for a further more detailed group of symbols, e.g. 3.6 Basic symbols. Many symbols are derived from the basic symbol shapes shown below.“ No. Designation Symbol Rem

25、arks 3.6.1 Compensation (basic symbol) A relative distance that is applied to one or more axes of a machine for a given program and causes a displacement in these axes only in the direction determined by the sign of the offset value. Used to identify the function of compensa- tion - namely, the appr

26、opriate offsetting of all the machine data values by fixed amounts to allow for tool size differences. Used as a basic unified shape for all functions related to the datum. This symbol is subject to variations depending on the particular datum to which it relates. 3.6.2 Origin/datum (basic symbol) 3

27、.6.3 Data carrier (basic symbol) Used to designate the actual data medium (paper tape, magnetic tape, magnetic disc, etc.) as opposed to the program or data itself, 3.6.4 Program without machine functions (basic symbol) Used as a basis for symbols designating the program to identify modes or operati

28、ons of the system where the actual slide motions and machining operations are not implemented, Used as a basis for symbols designating the program to identify modes or functions where the slide motions and machining functions are fully operational. 3.6.5 Program with machine functions (basic symbol)

29、 3.6.6 Store (basic symbol) 3 Used to identify functions where elements or data are held pending access or execution by the machine system. The symbol can apply equally to data, components or cutting tools. Symbols in this clause are merely numbered for reference. When calling up any of these basic

30、symbols, use their reference number given in clause 4. 2 ! BSI BSX3641 PART82 80 R LbZ4bb7 0058752 7 BS 3641 : Part 2 : 1980 3.6 Basic symbols (concluded) No. Designation Symbol Remarks o blocks. 3.6.7 Block Used to identify and qualify functions which relate specifically to program (basic symbol) 3

31、.6.8 Reset (basic symbol) Used to acknowledge a particular condition or the return to a known condition e.g. (1 )Reset a failure warning indicator (2)Data or event reset Used only in conjunction with identifying symbols. 3.6.9 Cancel, delete (basic symbol) Used to cancel a function or data. . Used i

32、n conjunction with identifying symbols. Used to negate an action. Only used in conjunction with other symbols. X 3.6.10 Do not (basic symbol 1 Used with symbols indicating the elements . to be interchanged. 3.6.1 1 Interchange (basic symbol) Used in conjunction with identifying symbols for a permane

33、nt change to data or information. Used in isolation to identify the edit mode of operation. 3.6.12 Modify, amend, edit (basic symbol) 3 BSI BS*3641 PART*2 80 1b24bb7 0058753 O BS 3641 : Part 2 : 1980 4. Symbols to be used on machine tools No. Designation Symbol Remarks Example 4.1 Data carrier May r

34、efer to paper tape, magnetic tape, magnetic disc, etc. See 3.6.3 4.2 Program without machine functions 4.3 Program with machine functions 4.4 Block o See 3.6.7 4,5 Forward tape wind Without data read Without machine functions 4.6 Backward tape wind Without data read Without machine functions 4.7 For

35、ward continuous - Read all data Without machine functions 4.8 Forward continuous Read all data With machine functions 4.9 Forward block by block - After reading and execu- tion of each block, operator action is required for reading and execution Read all data With machine functions of next block. 4

36、4. Symbols to be used on machine tools (continued) Example No. Designation Symbol Remarks o) 4.10 Programmed stop With machine functions Corresponds to MOO function 4.1 1 Programmed optional stop With machine functions Corresponds to MOT function After reading of each block, operator action is requi

37、red for reading of next block 4.12 Forward block by block Read all data Without machine functions Type of data to be specified for each 4.1 5 particular application. 4.17 See 4.1 3 Forward Search for particular data Without machine functions 4.1 4 Backwards - Type of data to be See 4.16,4.18, I Sear

38、ch for particular data Without machine functions specified for each particular application. IC 4.21,4.22 4.15 Forward Search for block number Without machine functions 4.1 6 Backwards - INlc Search for block number Without machine functions U / 4.17 Forward Search for program alignment function With

39、out machine functions 4.18 Backwards Search for program alignment function Without machine functions 5 BSI BSm3b41 PARTm2 80 m 1624bb9 0058755 Li m BS 3641 : Part 2 : 1980 4. Symbols to be used on machine tools (continued) No. Designation Symbol Remarks Example 4.20 End of program 4.21 Backward sear

40、ch for beginning of program Without machine functions 4,22 End of program with automatic rewind to beginning of program Without machine functions 4.23 Optional block skip ISO/TC 39 is at present consjdering the format of the hand 4.24 Manual data input 4.25 Axis control, normal Appropriate axis desi

41、gnation may be added if necessary. (machine follows program) 4.26 Axis control in mirror m image mode (machine program) Appropriate axis designation may be added to indicate which co-ordinates are modified. The axis control, normal symbol may be used in conjunction with this symbol. 6 4. Symbols to

42、be used on machine tools (continued) No. Designation Symbol Remarks Example 4.28 Reference position A pre-determined position, generally used in incre- mental systems, to which the slides are moved to achieve correspondence between slide position and any known origin. The slides may be re-aligned wi

43、th this position without reference to the measuring system. 4.29 Co-ordinate basic- origin I This represents the origin of the machine co-ordinate 4.30 Absolute program (Co-ordinate dimension words) 4.31 Incremental program (incremental dimension words) See 3.6.1 LI 4.32 Compensation or offset See 4

44、.34,4.35,4.36, 4*37,4.38 4.33 Zero offset f Axis rotation may be added if required. 7 BSI BS*3b4L PART*2 80 lb24bb 0058757 8 BS 3641 : Part 2 : 1980 4. Symbols to be used on machine tools (continued) No. Designation Symbol Remarks Example 4.34 Tool offset (non-rotating tool Appropriate axis designat

45、ion may be shown to indicate the offset axis according .to IS0 841. This offset allows for variations in the tool position on the :U indicated axis. 4.35 Tool length compensation (rotating tool) 4.36 Tool radius compensation (rotating tool 1 - 4.37 Tool diameter compensation (rotating tool 1 4.38 To

46、ol tip radius compensation 4.39 Positioning accu racy - fine 8 4. Symbols to be used on machine tools (continued) No. Designation Symbol Remarks Example 4.40 Positioning accuracy - normal 1 4.41 Positioning accuracy - coarse +- 4.42 Store 4.43 Write data into store 4.45 Reset See 3.6.8 4.46 Cancel,

47、delete 4.47 Reset store contents 9 BSI BS*3bllII PART82 80 IIb2llbb9 0058759 II W BS 3641 : Part 2 : 1980 4. Symbols to be used on machine tools (continued)- No. Designation Symbol Remarks Example 4.48 Delete store contents 4.49 Interchange To be used with symbols indicating the elements to be inter

48、- changed. See 3.6.1 1 For example: syntax error, parity failure, omission. 4.50 Program data error For example: torn or broken tape. 4.51 Data carrier fault 4.52 In position 1 Axis notation may be added -if requited. This symbol is applicable to one or more axis. 4.53 Storage overflow 4.54 Prewarni

49、ng storage overflow 10 4, Symbols to be used on machine tools (continued) No. Designation Symbol Remarks Example 4.56 Battery This symbol is identical to IEC symbol 5001 4.57 Program storage 4.58 Subroutine 4.61 Program edit 11 BSI BS*364L PART*2 80 1ib24667 0058763 T = BS 3641 : Part 2 : 1980 4. Symbols to be used on machine tools (concluded) No. Designation Symbol Remarks Example 4.64 Repositioning Returning to the point of interruption of the program such as, for example, after a faulty too1 has