CN2098704U

CN2098704U - Device for quick looking up common tolerance and fit table

Info

Publication number: CN2098704U
Application number: CN 91200890
Authority: CN
Inventors: 胡冬阳; 胡中华; 胡建华
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-01-15
Filing date: 1991-01-15
Publication date: 1992-03-11

Abstract

The utility model relates to a quick lookup device for common tolerance and fit, which belongs to the quick lookup tool of cultural products. The utility model is exclusively used for conveniently and quickly looking up and obtaining the limit deviation of the common tolerance and fit and dimension without tolerance of GB 1801-79, GB 1802-79, GB 1804-79, etc. The quick lookup device for common tolerance and fit, which is composed of an outer sheath and an inner core, is characterized in that the inner core can be slid along the inner cavity of the outer sheath backwards and forwards, and the basic size and the limit deviation of the common tolerance and fit with the dimension to 500 mm, which are edited on the inner core according to definite regulation, can be displayed one by one through the corresponding square holes and long slots on the outer sheath. The utility model has simple and convenient operation, and rapid and accurate value obtaining.

Description

Device for quick looking up common tolerance and fit table

The utility model belongs to a kind of quick checking instrument in the cultural goods, is exclusively used in easy and promptly looks into Common Difference ﹠ Cooperation commonly used such as getting GB1801-79, GB1802-79 and GB1804-79 and do not annotate the limit deviation of tolerance dimension.

The limit deviation table 17 of the total Common Difference ﹠ Cooperation of GB1801-79 page, engineering technical personnel often need look into usefulness.Look into the time spent at every turn, must turn over book earlier and look for table, and then align the perpendicular row of horizontally-arranged, can obtain required numerical value, very trouble; Simultaneously, because that table is gone up numerical value is a feast for the eyes, wrong numerical value is got by the very easy row of misunderstanding, OK, puzzles one's brains.

The purpose of the utility model design is: a kind of quick searching apparatus is provided, the limit deviation table of all Common Difference ﹠ Cooperation commonly used concentrated on one, neither need to turn over book, and very easy again and promptly look into and get required numerical value, and be difficult for mistaken.

The utility model is made up of overcoat and inner core two parts, it is characterized in that: inner core can slidably reciprocate along the overcoat inner chamber, the size of layout according to certain rules on inner core is to the basic size and the limit deviation of the Common Difference ﹠ Cooperation commonly used of 500mm, can be revealed one by one by putting corresponding square hole and elongated slot outward, need select which kind of basic size and limit deviation for use, which kind of just shows, all the other are all covered by overcoat, give prominence to the key points, come into plain view.

Below in conjunction with accompanying drawing the utility model is further explained.

Fig. 1 is an overcoat front view (FV) of the present utility model.

Fig. 2 is the inner core front view (FV).

Fig. 3 is overcoat reverse side figure.

Fig. 4 is inner core reverse side figure.

Fig. 5 is a wiring layout of the present utility model.

As shown in Figure 1, open two vertical slots (wherein a groove is slightly short) in the positive appropriate location of horizontal overcoat.Use limit deviation always hole corresponding to size to preferential the reaching of the middle paragraph basic size of 500mm, axle tolerance range such as A11, B11 ... and a11, b11 ... totally 32, uniform by two vertical slot length sums, and mark respectively that (its limit deviation of note just after each tolerance range in two vertical slots left sides, minus symbol, belong to preferential tolerance range person at its upper left corner blacking triangle mark), and below shorter vertical slot, open an oblong aperture, divide in this left side, hole, down two rowers outpour " greater than " and " extremely " printed words, then at middle part vertical slot left, put one " size is greater than the limit deviation table of 500 to 3150mm axles ", right-hand, put one " size is greater than the limit deviation table in 500 to 3150mm holes ".

As shown in Figure 2, in the inner core front, mark out the middle paragraph basic size of 25 packet sizes from left to right with respect to the positive oblong aperture of overcoat place, upper and lower two row of branch to 500mm, and with respect to positive two vertical slots of overcoat, corresponding one by one its basic size marks out the limit deviation (omitting its positive and negative symbol of the other mark of tolerance range) of 32 other tolerance ranges of two vertical slots respectively.

As shown in Figure 3, open four vertical slots (wherein a groove is slightly short) in overcoat reverse side appropriate location, with limit deviation corresponding to size to 500mm principal piece fall the preferential of basic size and hole commonly used, axle tolerance range such as D8, D9 ... and d8, d9 ... totally 71, uniform by four vertical slot length sums, and mark respectively that (its limit deviation of note just after each tolerance range in four vertical slots left sides, minus symbol, belong to preferential tolerance range person at its upper left corner blacking triangle mark), and below shorter vertical slot, open an oblong aperture, divide in this left side, hole, down two rowers outpour " greater than " and " extremely " printed words.Then from left to right, the blank space between first and second vertical slot is put one " size is greater than the continuous table of the limit deviation of 500 to 3150mm axles ", and the blank space between second and third vertical slot is put one " not annotating tolerance dimension limit deviation table ".

As shown in Figure 4, at the inner core reverse side, with respect to overcoat reverse side oblong aperture place, divide upper and lower two row to mark out 13 packet sizes to the principal piece of the 500mm basic size that falls from left to right, and with respect to overcoat reverse side four vertical slots, corresponding one by one its basic size marks out the limit deviation (omitting its positive and negative symbol of the other mark of tolerance range) of 71 other tolerance ranges of four vertical slots respectively.

As shown in Figure 5, inner core 1 is inserted in overcoat 2 inner chambers, just can uses the utility model easily.

Does not does use the utility model, need differentiate following three problems successively: the first, basic size belong to and annotate tolerance dimension? if belong to, should look into " not annotating tolerance dimension limit deviation table " of overcoat 2 reverse side; The second, is basic size greater than still less than 500mm? if greater than, then look into by " size is greater than the limit deviation table of 500 to 3150mm holes (or axle) " on overcoat 2 surfaces; Three, is institute's tolerance range of looking at overcoat 2 fronts or reverse side? clear and definite these three problems use the utility model just handy.For the most frequently used basic size of engineering technical personnel to the 500mm hole limit deviation of (or axle), but use the utility model most convenient and promptly obtain.At this moment, behind the particular location of differentiating tolerance range, only need a hand-held overcoat 2, move inner core 1 on the other hand, make the basic size of being looked into fall into a certain basic size section that shows in the oblong aperture on the overcoat 2, just can be according to the numerical value that shows in each vertical slot on the overcoat 2, and determine the other limit deviation of being looked into tolerance range of vertical slot.Use the utility model, simple, convenient, value rapidly, accurately.

Claims

1, a kind of Common Difference ﹠ Cooperation quick searching apparatus commonly used that relates to cultural goods, formed by overcoat and inner core two parts, it is characterized in that: inner core can slidably reciprocate along the overcoat inner chamber, and the overcoat positive and negative all have square hole and elongated slot, corresponding its square hole and elongated slot, basic size and the limit deviation of size in the layout of inner core positive and negative to the Common Difference ﹠ Cooperation commonly used of 500mm, and between the elongated slot of overcoat positive and negative and elongated slot be furnished with " size is greater than the limit deviation table of 500 to 3150mm holes (or axle) " and " not annotating tolerance dimension limit deviation table " on one side.

2, quick searching apparatus according to claim 1, it is characterized in that: open two vertical slots (wherein a groove is slightly short) in the positive appropriate location of horizontal overcoat, use limit deviation always hole corresponding to size to preferential the reaching of the middle paragraph basic size of 500mm, axle tolerance range such as A11, B11 ... and a11, b11 ... totally 32, uniform by two vertical slot length sums, and mark respectively that (its limit deviation of note just after each tolerance range in two vertical slots left sides, minus symbol, belong to preferential tolerance range person at its upper left corner blacking triangle mark), and below shorter vertical slot, open an oblong aperture, divide in this left side, hole, down two rowers outpour " greater than " and " extremely " printed words, at middle part vertical slot left, put one " size is greater than the limit deviation table of 500 to 3150mm axles " then.Right-hand, put one " size is greater than the limit deviation table in 500 to 3150mm holes ".

3, quick searching apparatus according to claim 1 and 2, it is characterized in that: in the inner core front, with respect to the positive oblong aperture of overcoat place, divide upper and lower two row to mark out the middle paragraph basic size of 25 packet sizes from left to right to 500mm, and with respect to positive two vertical slots of overcoat, corresponding one by one its basic size marks out the limit deviation (omitting its positive and negative symbol of the other mark of tolerance range) of 32 other tolerance ranges of two vertical slots respectively.

4, quick searching apparatus according to claim 1, open four vertical slots (wherein a groove is slightly short) in overcoat reverse side appropriate location, with limit deviation corresponding to size to 500mm principal piece fall the preferential of basic size and hole commonly used, axle tolerance range such as D8, D9 ... and d8, / d9 ... totally 71, uniform by four vertical slot length sums, and mark respectively that (its limit deviation of note just after each tolerance range in four vertical slots left sides, minus symbol, belong to preferential tolerance range person at its upper left corner blacking triangle mark), and below shorter vertical slot, open an oblong aperture, divide in this left side, hole, down two rowers outpour " greater than " and " extremely " printed words, then from left to right, first, blank space between two vertical slots, put one " size is greater than the continuous table of the limit deviation of 500 to 3150mm axles ", second, blank space between three vertical slots is put one " not annotating tolerance dimension limit deviation table ".

5, according to claim 1 or 4 described quick searching apparatus, it is characterized in that: at the inner core reverse side, with respect to overcoat reverse side oblong aperture place, divide upper and lower two row to mark out 13 packet sizes to the principal piece of the 500mm basic size that falls from left to right, and with respect to overcoat reverse side four vertical slots, corresponding one by one its basic size marks out the limit deviation (omitting its positive and negative symbol of the other mark of tolerance range) of 71 other tolerance ranges of four vertical slots respectively.