CN203824494U - Measuring device for countersink depth - Google Patents

Abstract

The utility model relates to the technical field of hole measuring tools, and provides a counterbore depth measuring device. The counterbore depth measuring device is provided with a measuring meter, a meter seat, a positioning sleeve, a measuring shaft and a measuring standard base, wherein the measuring meter is clamped and fixed In the first through hole of the table base, the measuring rod of the measuring meter passes through the first through hole and goes deep into the second through hole of the positioning sleeve, and the second through hole of the positioning sleeve is provided with the Measuring shaft, the assembled measuring shaft is inserted into the measuring standard base to perform zero teaching operation, and then the assembled measuring shaft is inserted into the counterbore to be measured to measure the degree of the table, thereby conveniently calculating the depth of the counterbore, The measurement is simple and convenient, and the measurement accuracy is high.

Description

A counterbore depth measuring device

technical field

The utility model belongs to the technical field of hole measuring tools, in particular to a counterbore depth measuring device.

Background technique

The counterbore is a common hole on the surface of the workpiece. Its area is different from blind holes and through holes. It has certain sinking requirements. The depth of the counterbore is generally measured with a vernier depth caliper.

As shown in Figure 1, the counterbore is provided with multiple stages, among which the first stage with a diameter of D is required to measure the depth of the hole, and the first stage with a diameter of d is provided at the upper end of the first stage with a diameter of D, wherein the hole with a diameter of D is The counterbore has a chamfered structure, so the starting and ending positions of its depth H are shown by the line AB in the figure, and the surface where the lower end surface of the counterbore with the aperture D is located is C. When measuring the depth of the counterbore with the aperture D , when it is measured by the above-mentioned vernier depth caliper, there are following defects:

(1) When using a vernier depth caliper for measurement, extend the measuring head end of the vernier depth caliper along the side wall of the counterbore with a diameter D to the position where the plane B is located, and then take a reading. During this process, you need to measure Personnel hold the measuring rod and move down slowly, the measurement process is cumbersome and inconvenient;

(2) During the measurement, the measuring personnel measure along the side wall with their hands, and the measuring head of the vernier depth caliper easily crosses the measuring line B and reaches the surface C, resulting in inaccurate measurement results and low precision.

Utility model content

The purpose of the utility model is to provide a counterbore depth measuring device, aiming to solve the problem of inconvenient measurement and low accuracy of measurement results in the prior art when the depth measurement of multi-stage counterbore is performed by a vernier depth caliper.

The utility model is achieved in this way, a counterbore depth measuring device, characterized in that the counterbore depth measuring device includes a measuring meter, the measuring meter is clamped and fixed on the table base, and the upper and lower two of the table base A first through hole for clamping the measuring rod of the measuring meter is provided between the surfaces, and the side of the table base is provided to communicate with the first through hole, and the measuring rod of the measuring meter is fixed by fastening screws. The threaded hole for fixing clamping, the lower end of the table base is provided with a positioning sleeve, and the positioning sleeve is provided with a second through hole and a limiting hole, and the limiting hole is located at the position below the side wall of the positioning sleeve, so that A measuring shaft is provided in the second through hole, and a limiting groove is arranged on the measuring axis, and the measuring axis is set in the second through hole through the limiting hole, the limiting groove and the limiting screw , the cross-sectional diameter of the measuring shaft is adapted to the diameter of the counterbore to be measured, and the lower end of the measuring shaft is provided with a standard base for measurement.

As an improved solution, the measuring gauge is a dial gauge or a dial gauge.

As an improved solution, a hoop cooperating with the fastening screw is provided in the first through hole.

Since the counterbore depth measuring device is provided with a measuring table, a table base, a positioning sleeve, a measuring shaft and a measuring standard base, wherein the measuring table is clamped and fixed in the first through hole of the table base, and the measuring rod of the measuring table passes through the first through hole. A through hole goes deep into the second through hole of the positioning sleeve, and the measuring shaft is sleeved in the second through hole of the positioning sleeve, and the assembled measuring shaft is inserted into the measuring standard base for zero teaching. Operation, and then insert the assembled measuring shaft into the counterbore to be measured to measure the degree of the meter, so as to easily calculate the depth of the counterbore, the measurement is simple and convenient, and the measurement accuracy is high.

Since a hoop matched with the fastening screw is provided in the first through hole, it is convenient to fasten and clamp the measuring rod of the measuring meter.

Description of drawings

Fig. 1 is the structural representation of multi-stage counterbore;

Figure 2 (a) is a schematic structural view of the counterbore depth measuring device provided by the utility model;

Figure 2(b) is a schematic diagram of assembly of the counterbore depth measuring device provided by the present invention;

Fig. 3 is a schematic structural view of the table seat provided by the utility model;

Fig. 4 is the structural representation of the positioning sleeve provided by the utility model;

Fig. 5 is the structural representation of the measuring shaft provided by the utility model;

Among them, 1-measurement table, 2-table seat, 21-first through hole, 3-fastening screw, 4-positioning sleeve, 41-second through hole, 42-limiting hole, 5-measurement shaft, 51- Limiting groove, 6-limiting screw, 7-measurement standard base, 8 clamps.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Fig. 2 (a) shows the structural diagram of the counterbore depth measuring device provided by the utility model, and Fig. 2 (b) shows the assembly schematic diagram of the counterbore depth measuring device provided by the utility model, while combining Fig. 3 to Fig. 5. Wherein, for ease of description, only the parts relevant to the present utility model are shown in the figure.

The counterbore depth measuring device of the present utility model comprises a measuring meter 1, and the measuring meter 1 is clamped and fixed on the table base 2, and the upper and lower surfaces of the table base 2 are provided with the measuring table 1 for clamping. The first through hole 21 of the measuring rod, the side of the table base 2 is provided with a threaded hole communicating with the first through hole 21, and the measuring rod of the measuring meter 1 is fixed and clamped by the fastening screw 3 ( not marked in the figure), the lower end of the table seat 2 is provided with a positioning sleeve 4, and the positioning sleeve 4 is provided with a second through hole 41 and a limiting hole 42, and the limiting hole 42 is arranged on the positioning sleeve 4 Position below the side wall, the second through hole 41 is provided with a measuring shaft 5, the measuring shaft 5 is provided with a limiting groove 51, the measuring axis 5 passes through the limiting hole 42, the limiting groove 51 The stop screw 6 is set in the second through hole 41, the cross-sectional diameter of the measuring shaft 5 is adapted to the diameter of the counterbore to be measured, and the lower end of the measuring shaft 5 is provided with a measuring standard base 7 matched therewith.

Wherein, the measuring gauge 1 is a dial indicator or a dial indicator, and of course other types of measuring instruments can also be used, which will not be repeated here, but it is not used to limit the utility model.

In the present utility model, the first through hole 21 is provided with a clip 8 that cooperates with the fastening screw 3, wherein, as shown in FIG. , clamp the measuring rod of the measuring gauge 1.

Wherein, as shown in FIG. 4 and FIG. 5 , the limiting hole 42 provided on the positioning sleeve 4 and the limiting groove 51 provided on the measuring shaft 5 cooperate with each other, and the measuring shaft 5 is restricted to the position of the positioning sleeve 4 . In the second through hole 41, the measuring shaft 5 can move up and down along the limiting groove 51 in the positioning sleeve 4 to prevent the measuring shaft 5 from falling off from the positioning sleeve 4 and realize the measurement of the counterbore depth at the same time.

In the present utility model, above-mentioned measurement standard base 7 is as a standard part, and as shown in Figure 1, it is provided with a counterbore that the depth of a hole is M, and it is used as the main body reference of measuring the depth of the multi-stage counterbore, then for measuring From the calibration data h measured in Table 1, the depth of the counterbore to be measured can be obtained as M+h.

Certainly, in order to adapt to counterbores with different diameters, multiple measuring axes 5 can be designed to adapt to counterbores with different diameters, which will not be repeated here.

In conjunction with Fig. 1 to Fig. 5, the working principle of the counterbore depth measuring device of the present utility model is provided as follows:

(1) Insert the measuring meter into the first through hole of the meter base, and tighten the fastening screws to fasten the measuring meter in the first through hole;

(2) Assemble the measuring shaft in the second through hole of the positioning sleeve, and put the positioning sleeve on the above-mentioned measuring standard base, and the lower end of the measuring shaft goes deep into the counterbore of the measuring standard base, as shown in Figure 2;

(3) Put the meter base of the clamped measuring meter in step (1) into the positioning sleeve, so that the measuring contact of the measuring meter penetrates into the second through hole of the positioning sleeve and contacts the upper end surface of the measuring shaft. Then set the gauge reading to zero;

(4) Put the positioning sleeve after the zero-setting operation in step (3) together with the watch base on the anti-theft counterbore to be measured, and read the value h of the measuring meter. At this time, the depth of the counterbore to be tested is M+h.

Among them, in the above step (4), in combination with Figure 1, the lower end surface of the measuring shaft is flat with the measurement line B, and the lower edge of the positioning sleeve is flat with the measurement line A, and the measured value at this time is a relatively accurate depth value, here No more details, but not to limit the utility model.

In the utility model, the counterbore depth measuring device is provided with a measuring table, a table base, a positioning sleeve, a measuring shaft and a measuring standard base, wherein the measuring table is clamped and fixed in the first through hole of the table base, and the measuring rod of the measuring table Go through the first through hole and go deep into the second through hole of the positioning sleeve. The measuring shaft is sleeved in the second through hole of the positioning sleeve, and the assembled measuring shaft is inserted into the measuring standard The zero teaching operation is carried out in the base, and then the assembled measuring shaft is inserted into the counterbore to be measured to measure the degree of the meter, so as to conveniently calculate the depth of the counterbore, the measurement is simple and convenient, and the measurement accuracy is high.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (3)

1. A counterbore depth measuring device, characterized in that the counterbore depth measuring device comprises a measuring table (1), the measuring table (1) is clamped and fixed on the table base (2), and the table base (2 ) is provided with a first through hole (21) for clamping the measuring rod of the measuring meter (1) between the upper and lower surfaces, and the side of the meter base (2) is provided with the first through hole (21) ) connected, and the threaded hole for fixing and clamping the measuring rod of the measuring meter (1) through the fastening screw (3), the lower end of the meter base (2) is provided with a positioning sleeve (4), and the positioning The sleeve (4) is provided with a second through hole (41) and a limiting hole (42), the limiting hole (42) is located at the position below the side wall of the positioning sleeve (4), and the second through hole ( 41) is equipped with a measuring shaft (5), and the measuring shaft (5) is provided with a limiting groove (51), and the measuring axis (5) passes through the limiting hole (42), the limiting groove ( 51) and the limit screw (6) are set in the second through hole (41), the cross-sectional diameter of the measuring shaft (5) is adapted to the diameter of the counterbore to be measured, and the lower end of the measuring shaft (5) A measuring standard base (7) matching it is provided. 2. The counterbore depth measuring device according to claim 1, characterized in that the measuring gauge (1) is a dial indicator or a dial gauge. 3. The counterbore depth measuring device according to claim 1, characterized in that, a clamp (8) cooperating with the fastening screw (3) is provided in the first through hole (21).