CN86203819U

CN86203819U - Tolerance and fit fast readout rule

Info

Publication number: CN86203819U
Application number: CN 86203819
Authority: CN
Inventors: 吕桂林; 李国林; 郅恒山; 郅西彬; 杨文忠
Original assignee: HUACHENG MACHINERY FACTORY XIAOYI TOWN GONG COUNTY
Current assignee: HUACHENG MACHINERY FACTORY XIAOYI TOWN GONG COUNTY
Priority date: 1986-06-03
Filing date: 1986-06-03
Publication date: 1987-11-07

Abstract

The utility model discloses a set of tolerance and fit fast readout ruler which is suitable for the industry of mechanical engineering, particularly for mechanical design personal. The fast readout ruler of the utility model comprises three rulers, each of which is composed of a movable tape measure and a ruler sleeve, the first and the second rulers are 'tolerance and fit' rulers, and the third ruler is a 'form and position tolerance and surface smoothness' ruler. The fast readout ruler of the utility model has the advantages of high total visualizability and convenient use, and the required value of tolerance and fit can be directly and fast read out.

Description

Tolerance and fit fast readout rule

The utility model relates to a cover and is applicable to the mechanical engineering industry, is specially adapted to the Common Difference ﹠ Cooperation fast readout rule that the Machine Design personnel use.

Be engaged in Machine Design when work, in a sense, just always in that this subject of study comes into contacts with " Common Difference ﹠ Cooperation ".Because " Common Difference ﹠ Cooperation " GB length is big, amount is many, wastes time and energy so consult, and is loaded down with trivial details dull.Heilongjiang Province Association for Standardization exchanges the shop for solving this difficult problem with Harbin City's industry advanced technology, several years ago developed " tolerance standard numerical value draws the chi group ", but this chi is placed on four chi faces on the layout of chi the basic deviation series of drawing being separated cloth, and the basic deviation figure in hole is plotted in side by side with the basic deviation figure of axle, make layout lack overall intuitive search also not too convenient.Moreover, this group is drawn can not directly read each required tolerance numerical value on the chi, need to find corresponding limit deviation from chi earlier, checks in corresponding standard of tolerance from chi again, last mental arithmetic or both algebraic sum of written calculation more just can obtain another limit deviation.

At above-mentioned deficiency, it is strong, easy to use that the purpose of this utility model is to design a kind of overall intuitive, can directly, promptly read the Common Difference ﹠ Cooperation fast readout rule of required numerical value.

Accompanying drawing has provided an embodiment of the present utility model.

Fig. 1: two faces of first chi chi cover.

Fig. 2: two faces of chi are drawn in the activity of first chi.

Fig. 3: two faces of second chi chi cover.

Fig. 4: two faces of chi are drawn in second chi activity.

Fig. 5: the 3rd two faces of chi chi cover.

Fig. 6: the 3rd draws two faces of chi to the chi activity.

Fig. 7: basic deviation is an illustration.

Fig. 8: former capital's mark grade of finish and new national standard surfaceness height parameter R _a, R _ZThe table of comparisons of numerical value (μ m).

Fast readout rule of the present utility model is divided into three, and first, second chi is " Common Difference ﹠ Cooperation " chi, and the 3rd is chi " form and position tolerance and surface smoothness " chi. As shown in the figure, whenever all draw chi chi (chi core) to form by chi cover and activity; Except showing data, chart and figure, also have the window (rectangle frame with grid on the accompanying drawing is the windowing place) of some on two faces of chi cover. Activity draws chi to be positioned at chi cover, all shows the data of all kinds of Common Difference ﹠ Cooperation on two faces, and chi puts the position of window and draws the Data Position of chi to be stacked with movable, and the window that puts out by chi can see that activity draws the data on the chi. During use, only need the twitch activity to draw chi, can directly promptly read required Common Difference ﹠ Cooperation numerical value by corresponding window. Accompanying drawing 1,3, on 5 in the middle of the dotted line of part be middle the broken line of two faces of chi cover, accompanying

drawing

2,4, on 6 in the middle of the solid line of part draw the middle broken line of two faces of chi for activity.

Fig. 1 to Fig. 2 is an embodiment of first chi.Have five windows on first face of chi cover, have five windows on another face, cloth is placed with table 1 to five forms of table 5 on the first chi, shows size to the basic hole system of 500mm and (comprising preferential) commonly used clearance fit of basic shaft system, the total data of transition fit and interference fit; Table 1 and table 3 are respectively size to 500mm basic hole system and basic shaft system (comprising preferential) commonly used clearance fit and transition fit data, and the activity of being placed on is drawn on two chi faces of chi respectively; Table 2 and table 4 are respectively size to 500mm basic hole system and basic shaft system (comprising preferential) commonly used interference fit data, and cloth is placed on two faces of chi cover respectively, and table 5 is the local content in table 1 and the table 3, and cloth is placed on the face of chi cover.

Fig. 3 to Fig. 4 is an embodiment of second chi: have three windows on first face of chi cover, have two windows on another face, cloth is placed with table 6 to six forms of table 11 on the second chi.Table 6 be size to 500mm general service hole, the axle tolerance range, table 8 be the at different levels standard of tolerance values of size to 3150mm, table 11 is not annotated the tolerance range series of tolerance dimension for size to 3150mm, more than three tables be placed on the face that chi overlaps by cloth; Table 9 is the new and old national standard contrasts of size 1 to 500mm Common Difference ﹠ Cooperation, is placed on by cloth on another face of chi cover; Table 7 be size to 500mm general service hole, the axle tolerance range basic deviation, cloth is placed on activity and draws on the chi face of chi; Table 10 is the total data of size 500 to 3150mm holes commonly used, axle tolerance range, and cloth is placed on activity and draws on another chi face of chi.

Fig. 5 to Fig. 6 is the 3rd an embodiment of chi.Have two windows on first face of chi cover, have three windows on another face, the 3rd is placed with six forms to cloth on the chi, four charts and four notes.Table 1 is shown linearity, flatness tolerance value and corresponding smooth finish grade, and table 2 is shown the depth of parallelism, verticality, degree of tilt tolerance value, is placed on activity by cloth and draws on the face of chi; Table 3 is shown circularity, cylindricity tolerance value and corresponding smooth finish grade, and table 4 is shown right alignment, symmetry, circle is beated the total run-out tolerance value, table 6 is shown the corresponding grade of finish of dimensional tolerence grade with axle, hole, is placed on activity by cloth and draws on another face of chi; Table

5 is independent principle, and the substance of the 3rd Tolerance Principle of maximum material principle and envelope principle is placed on activity by cloth respectively and draws on two faces of chi; Table 1 is listed as on the uniform face that is placed on chi cover to table 4 principal parameter figure separately; Four charts are respectively: 14 form and position tolerance related items and symbol thereof, nine other relevant symbol and meanings thereof, position number of degrees system, the calculating of bolt (screw) connecting hole Tolerance of Degree of position value Ta and Tb and definite, on the uniform face that is placed on chi cover, four notes also are placed on the face of chi cover by cloth.

When drawing and interpreting blueprints, also often need make judgement qualitatively to the character and the tightness that cooperate, therefore in the instructions of this fast readout rule, provided the basic deviation series of drawing.In addition, consider the present situation of the checkout equipment of present many factories, this chi is still continued to use the surface smoothness notion and the grade of former capital's man's standard (GB1031-68).On new national standard (GB1031-83), then be referred to as surfaceness, adopt mean line system to be evaluated, so in instructions, provided former capital's mark grade of finish and new national standard surfaceness height parameter R _a, R _ZThe table of comparisons of numerical value (μ m) is beneficial to the progressively transition to new national standard.

The major advantage of this fast readout rule is: overall intuitive is strong, easy to use, can directly, promptly read required Common Difference ﹠ Cooperation numerical value.

Claims

1, a cover is applicable to the mechanical engineering industry, be specially adapted to the Common Difference ﹠ Cooperation fast readout rule that the Machine Design personnel use, each chi all draws chi, chi cover to form by activity, activity draws chi to be arranged in the chi cover, it is folded mutually with the movable Data Position of chi that draws that chi puts the window's position of being opened, of the present utility model being characterised in that: first, second chi is " Common Difference ﹠ Cooperation " chi, and the 3rd is chi " form and position tolerance and surface smoothness " chi;

Have five windows on the face of a, first chi chi cover, also have five windows on another face, cloth is placed with table 1 to five forms of table 5 on the chi, shows size to the basic hole system of 500mm and (comprising preferential) commonly used clearance fit of basic shaft system, the total data of transition fit and interference fit;

Have three windows on the face of b, second chi chi cover, have two windows on another face, cloth is placed with table 6 to six forms of table 11 on the chi, table 6 to table 7 is shown the total data of size to general service hole, axle tolerance range code name and the basic deviation thereof of 500mm, table 8 is shown the at different levels standard of tolerance values of size to 3150mm, table 9 is the new and old national standard contrasts of size 1 to 500mm Common Difference ﹠ Cooperation, table 10 is shown the total data of size 500 to 3150mm holes commonly used, axle tolerance range, and table 11 is shown size is not annotated tolerance dimension to 3150mm tolerance range series;

C, the 3rd has three windows having two windows on the face of chi chi cover on another face, lay six forms on the chi, four charts and four notes, and table 1-table 4 principal parameter legend separately.Table 1 is shown linearity, flatness tolerance value and corresponding smooth finish grade, table 2 is shown the depth of parallelism, verticality, the degree of tilt tolerance value, table 3 is shown circularity, cylindricity tolerance value and corresponding smooth finish grade, table 4 is shown right alignment, symmetry, circle is beated, the total run-out tolerance value, table 5 is shown independent principle, the substance of three Tolerance Principle such as maximum material principle and envelope principle, application scenario and mark example, table 6 is shown and axle, the corresponding grade of finish of dimensional tolerence grade in hole, four charts are respectively: 14 form and position tolerance related items and symbol thereof, nine other relevant symbol and meanings thereof, position number of degrees system, the calculating of bolt (screw) connecting hole Tolerance of Degree of position value TaTb and definite.

2, fast readout rule according to claim 1, it is characterized in that: table 1 and table 3 are respectively size to 500mm basic hole system, basic shaft system (comprising preferential) commonly used clearance fit and transition fit data, and the activity that is placed on first chi is respectively drawn on two chi faces of chi; Table 2 and table 4 are respectively sizes to 500mm basic hole system, basic shaft system (comprising preferential) commonly used interference fit data, are placed on by cloth respectively on two faces of chi cover of first chi; Table 5 is the part contents in table 1 and the table 3, is placed on the face of first chi chi cover.

3, fast readout rule according to claim 1 is characterized in that: will show the 6(size to 500mm general service hole, the axle tolerance range), table 8 and table 11 cloth is placed on the face of second chi chi cover; Table 9 cloth is placed on another face of second chi chi cover; With table 7(size to 500mm general service hole, the basic deviation of axle tolerance range) the cloth activity that is placed on second chi draws on the face of chi; The activity that table 10 cloth is placed on second chi is drawn on another chi face of chi.

4, fast readout rule according to claim 1 is characterized in that: the 3rd draws the content that is furnished with table 1, table 2 on the face of chi to the activity of chi; The content that is furnished with table 3, table 4 and table 6 on another face of chi is drawn in activity; Table 5 cloth is placed on activity and draws on two faces of chi; Separately principal parameter legend of table 1 table 4, four charts and four explain on the uniform face that is placed on the chi cover.