CN215338113U

CN215338113U - Measuring tool for measuring aperture size

Info

Publication number: CN215338113U
Application number: CN202121772127.7U
Authority: CN
Inventors: 田皓旭
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2021-12-28
Anticipated expiration: 2031-08-02

Abstract

The utility model discloses a measuring tool for measuring aperture size, which comprises a plug gauge, a sleeve, a connecting seat, a spring and the like, can be used independently, can also be used in cooperation with a vernier caliper, can simply, conveniently, quickly, accurately and efficiently test the aperture, is widely applied to various manufacturing conditions or production environments, improves the consistency of interference fit pre-tightening amount in assembly through accurate measurement of holes and shafts, has remarkable practicability compared with the conventional universal aperture measuring tool, and can realize quick and accurate measurement on a measured hole.

Description

Measuring tool for measuring aperture size

Technical Field

The utility model relates to a mechanical measuring tool, in particular to a measuring tool for measuring the aperture size.

Background

In the assembly of mechanical products, three fit modes of clearance, transition and interference are adopted, in the interference fit, the fit of the shaft and the hole features has the characteristics of simple structure, good centering property, large bearing capacity, stability and impact resistance and the like, and the defects of high requirement on the machining precision of the fit surface, high sensitivity to actual interference of the stress generated by the bearing capacity and the assembly, excessive assembly stress, difficulty in disassembly or failure in meeting the pre-tightening expectation and high difficulty in manufacturing of large fit difference are easily caused. The most important thing is to determine the interference of the shaft and the hole, because the dimensional tolerance and the form and position tolerance of the shaft hole in the manufacturing process are objective, the reasonable interference of the shaft hole in a certain range is needed, and the key is to quantify the shaft and the hole. Generally, the shaft measurement is simple, the precision machining is easy to realize, and on the contrary, the measurement difficulty of the hole is high.

The common pore diameter measurement comprises measuring tools such as a plug gauge, an inner dial gauge, a caliper, an inner caliper and a three-coordinate detection tool, the plug gauge is the simplest and the fastest plug gauge used in the tools, but the detection size of the common plug gauge is only one size, the common go gauge and the no-go gauge are combined to detect the range size of a certain size tolerance, the plug gauge corresponding to the pore diameter needs to be selected from a plurality of the measuring gauges to finish the measurement of one pore, how to accurately select a proper measuring gauge in a plurality of middle positions is a difficult matter, and the problem of easy confusion of selection exists simultaneously, and the measurement of a plurality of pore diameters in industrial production cannot be met.

Disclosure of Invention

The utility model provides a measuring tool for measuring the aperture size, which can be used independently and can be arranged on a vernier caliper for use, and has the characteristics of simplicity, convenience, rapidness, accuracy and high efficiency.

The utility model comprises a plug gauge, a sleeve, a connecting seat and a spring, and adopts the technical scheme that: the head part of the plug gauge is a pointed cone, the rod part of the plug gauge is conical, dividing lines and orderly arranged digital lettering are carved on the head part of the plug gauge, a step for installing a spring is arranged at the tail end of the plug gauge, and measuring range lettering is carved on the tail end of the plug gauge; the plug gauge and the spring are arranged in the sleeve, the spring can reset the plug gauge, and the positioning knob is arranged in a screw hole at the tail end of the plug gauge through a slot on the sleeve and used for fixing the relative position of the plug gauge and the sleeve during measurement and reading;

one end of the sleeve is a sleeve end face used for limiting or reading in an orifice during measurement, the other end of the sleeve is combined with the connecting seat, and a fixed knob and a rectangular interface are arranged on the connecting seat;

when the plug gauge is used in combination with the vernier caliper, the rectangular interface is connected with the depth measuring end of the vernier caliper, the plug gauge is fixed by the fixing knob, the vernier caliper is operated and measured by the vernier and the knob, a measured value with higher precision is obtained by reading of the vernier caliper, and in addition, the depth of a hole can be measured.

The utility model has the advantages that: this technical scheme provides a simple succinct, convenient and fast, high-efficient general novel measuring tool to have higher measurement accuracy, the precision can reach 0.00001mm when using with the slide caliper cooperation, can be extensive be applied to various manufacturing conditions or production environment, can measure to the quick and accurate realization in hole, is very profitable to promoting product quality.

Drawings

FIG. 1 is a block diagram of the present invention.

Figure 2 is an external view of the plug gauge of the present invention.

FIG. 3 is a profile view of a caliper in use.

In the figure, a plug gauge 1, a sleeve 2, a spring 3, a positioning knob 4, a connecting seat 5, a fixing knob 6, a rectangular connector 7, a slot 8, a sleeve end face 9, a pointed cone 10, a dividing line 11, a digital scale 12, a range scale 13, a step 14, a screw hole 15, a vernier caliper 16, a vernier 17 and a knob 18 are arranged.

Detailed Description

The present invention is described in detail below with reference to the attached drawings.

Referring to fig. 1 and 2, the measuring tool for measuring the aperture size comprises a plug gauge 1, a sleeve 2, a spring 3, a positioning knob 4, a connecting seat 5, a fixing knob 6 and the like, wherein the head of the plug gauge 1 is a pointed cone 10, the rod part of the plug gauge is conical, division lines 11 and orderly arranged digital lettering 12 are carved on the rod part, a step 14 for installing the spring 3 is arranged at the tail end of the plug gauge, and minimum and maximum range lettering 13 are carved on the tail end of the plug gauge.

The plug gauge 1 and the spring 3 are arranged in the sleeve 2, the spring 3 can enable the plug gauge 1 to automatically reset, and the positioning knob 4 is arranged in a screw hole 15 at the tail end of the plug gauge 1 through a groove 8 in the sleeve 2 and used for fixing the relative position of the plug gauge 1 and the sleeve 2 during measurement and reading.

One end of the sleeve 2 is a sleeve end face 9 used for limiting or reading in an orifice during measurement, the other end of the sleeve is combined with the connecting seat 5, and the connecting seat 5 is provided with a fixed knob 6 and a rectangular interface 7.

During the use, with sleeve pipe terminal surface 9 and the laminating of being surveyed the hole, promote along fluting 8 and promote location knob 4, rotate after being restricted and fix location knob 4 and make it fixed, move away the measuring tool from being surveyed the hole, along sleeve pipe terminal surface 9 reading scale value, measuring result = the minimum of measuring range +0.01 x (the scale value that sleeve pipe terminal surface 9 corresponds + the value of estimating), if: the minimum value of the measuring range of the measuring tool is 5.0000, the scale value corresponding to the sleeve end face 9 is 34, and the estimated value is 0.5, so that the measuring result =5.0000+0.001 (34 + 0.5) =5.0345 mm.

As shown in fig. 3, when the measuring device is used in combination with the vernier caliper 16, the rectangular interface 7 is connected to the depth measuring end of the vernier caliper 16, and is fixed by the fixing knob 6, the vernier 17 is pushed to eliminate the gap combined with the plug gauge 1, and the zero return processing is performed, the vernier 17 is pushed during measurement, the measuring position is fixed by the knob 18, the measurement result = the minimum value of the measuring range +0.01 × the length measured by the vernier caliper 16, and the measurement accuracy can reach 0.00001 mm. Such as: the minimum value of the measuring range is 5.0000, the length measured by the vernier caliper is 34.45, and the measurement result is =5.0000+0.001 × 34.45=5.03445 mm.

Claims

1. The utility model provides a measure aperture size's measuring tool, includes feeler gauge (1), sleeve pipe (2), connecting seat (5) and spring (3), its characterized in that: the head part of the plug gauge (1) is a pointed cone (10), the rod part is conical, dividing lines (11) and orderly arranged digital lettering (12) are carved, a step (14) for installing a spring (3) is arranged at the tail end, and measuring range lettering (13) are carved; the plug gauge (1) and the spring (3) are arranged in the sleeve (2), the spring (3) can reset the plug gauge (1), and the positioning knob (4) is arranged in a screw hole (15) at the tail end of the plug gauge (1) through a notch (8) on the sleeve (2) and used for fixing the relative position of the plug gauge (1) and the sleeve (2) during measurement and reading;

one end of the sleeve (2) is a sleeve end face (9) used for limiting or reading in an orifice during measurement, the other end of the sleeve is combined with the connecting seat (5), and a fixing knob (6) and a rectangular interface (7) are arranged on the connecting seat (5);

when the plug gauge (1) is used in combination with a vernier caliper (16), the rectangular interface (7) is connected with the depth measuring end of the vernier caliper (16), the plug gauge is fixed by the fixing knob (6), the plug gauge is operated and measured through a vernier (17) and a knob (18) on the vernier caliper (16), a measured value with higher precision is obtained through reading of the vernier caliper (16), and in addition, the depth of a hole can also be measured.