CN204188097U - A kind of taper thread mandrel - Google Patents

Abstract

The utility model relates to a kind of taper thread mandrel, for the accessory of test measuring device, comprise: a shank, a king-rod portion, a taper thread portion, a thin rod part and two center pit portions, described shank is a right cylinder, one end home position of described shank offers a described center pit portion, and other one end of described shank connects described king-rod portion; The other one end in described king-rod portion connects described taper thread portion; Described taper thread portion is a taper thread, and large footpath, path and central diameter are all identical taperings; Described thin rod part is a right cylinder, and described thin rod part is connected to the other one end in described taper thread portion, and the another one in described center pit portion is positioned at other one end of described thin rod part; Described shank, king-rod portion, taper thread portion, thin rod part and two center pit portions are concentric.The utility model is benchmark with the pitch diameter of thread, is the detection accessory that a kind of structure is simple, easy to operate, positioning precision is high.

Description

A tapered threaded mandrel

technical field

The utility model relates to a detection aid based on the thread, in particular to a tapered thread mandrel for a series of shape and position tolerance detection based on the pitch diameter of the thread. the

Background technique

With the rapid development of the automobile industry, the precision requirements of parts are getting higher and higher, and higher requirements are put forward for product testing. For a long time, the measurement of thread position tolerance has been a difficult problem at home and abroad, because of the particularity of thread fit , The thread has both axial clearance and radial clearance during the mating process, so it cannot be accurately positioned during the measurement process, so it cannot be accurately measured. In the manufacturing process of nuts, the processing of key nuts and important nuts requires the accuracy of the coaxiality, circular runout, verticality, positional tolerance and other positional tolerances of the thread and some processing elements to meet certain requirements. The shape and position tolerance of the product given as the reference is very common, but the detection and positioning scheme of the existing technology has large errors or inconvenient operation, which makes the detection correspondingly misjudged or even misjudged, resulting in the quality of the parts put into installation and use. Hidden dangers increase the maintenance cost in the later period and bring a lot of unnecessary trouble and loss. Therefore, there are some problems to be solved in the prior art. the

Utility model content

The purpose of this utility model is to provide a new type of detection aid based on the thread, which has a simple structure, is convenient to use and has high positioning accuracy. In particular, the detection of the geometric tolerance based on the thread is more accurate, fast and convenient, so as to solve the problems in the prior art. the

In order to achieve the above object, the utility model adopts the following technical solutions:

A tapered threaded mandrel is used as an auxiliary tool for measuring tools, the tapered threaded mandrel includes: a handle, a middle rod, a tapered thread, a thin rod and two central holes,

The handle is a cylinder, one end of the handle is provided with a center hole, and the other end of the handle is connected to the middle rod;

The other end of the middle rod part is connected to the tapered thread part;

The tapered thread part is a tapered thread, and the major diameter, minor diameter and middle diameter are all of the same taper;

The thin rod part is a cylinder, the thin rod part is connected to the other end of the tapered thread part, and the other of the central hole part is located at the other end of the thin rod part;

The shank, the middle rod, the taper thread, the thin rod and the two central holes are concentric.

According to the tapered threaded mandrel described in the preferred embodiment of the present invention, the measuring tool is a concentricity gauge. the

According to the tapered threaded mandrel described in the preferred embodiment of the present invention, the measuring tool is a V-shaped block. the

According to the tapered threaded mandrel described in the preferred embodiment of the present invention, the measuring tool is a deflection meter. the

Owing to adopting above technical scheme, make the utility model have following advantage effect:

First, the utility model uses taper centering with the tested part during the detection process, and there is no gap in cooperation, and the positioning is more accurate;

Second, the utility model can greatly improve the detection range by cooperating with other mechanisms, and can measure various tolerances;

Third, the utility model has a simple and reliable structure and is easy to install.

Of course, any specific embodiment implementing the content of the present utility model does not necessarily have all the above technical effects at the same time. the

Description of drawings

Figure 1 is a schematic structural view of the utility model;

Fig. 2 is a schematic diagram of the utility model and a V-shaped block;

Fig. 3 is the schematic diagram of the utility model and the concentric instrument;

Fig. 4 is a schematic diagram of the utility model and the deflector.

Detailed ways

Below in conjunction with accompanying drawing, specify the utility model;

Please refer to Fig. 1, which is a schematic structural view of the utility model, a tapered threaded mandrel 10, an auxiliary tool for detecting measuring tools, as shown in the figure, the tapered threaded mandrel 10 includes: a handle 11, a middle rod 12. Tapered threaded part 13, thin rod part 14 and two central hole parts 15, wherein the handle part 11 is a cylinder, and a central hole part 15 is opened at the center of one end of the handle part 11, and The other end of the shank 11 is connected to the middle rod portion 12; the other end of the middle rod portion 12 is connected to the tapered threaded portion 13; the tapered threaded portion 13 is a tapered thread, with major diameter, minor diameter and middle diameter They are all the same taper, and the size of the taper thread is determined according to the size of the threaded hole. When screwed into the internal thread, a good centering effect can be obtained; the same thread specification, different precision (E, G, H,) can use the same taper thread The mandrel 10 greatly improves the range of use and reduces the inspection cost; the thin rod part 14 is a cylinder, the thin rod part 14 is connected to the other end of the tapered thread part 13, and the center hole part 15 The other one is located at the other end of the thin rod part 14; the handle part 11, the middle rod part 12, the tapered thread part 13, the thin rod part 14 and the two central hole parts 15 are concentric and maintain high coaxiality.

In addition, the shank 11 and the central hole 15 are connected with other measuring tools for positioning, thereby achieving the purpose of accurate measurement; The steps are: 1. Screw the nut into the tapered thread part 13 until it cannot be rotated; 2. Fix the handle 11 on the V-shaped block 20 as shown in the figure, and control the axial displacement; 3. Rotate the taper The threaded mandrel 10 detects the beating of the nut cone surface with a dial gauge. the

As shown in Figure 3 again, it is connected with the concentric instrument 30. The detection steps are: 1. Screw the nut into the tapered threaded part until it cannot be rotated; 2. Insert the handle 11 into the concentric instrument 30 as shown in the figure, adjust Use the block 31 to control the axial movement, and press the shank 11 by the pressure wheel 32; 3, turn the hand wheel 33 to drive the nut to rotate, and use the dial gauge 34 to detect the beating of the nut cone surface. the

In addition, as shown in Figure 4, the central hole 15 is connected with the deflection meter, and the detection steps are: 1. Screw the nut into the tapered threaded part 13 until it cannot be rotated; 2. Screw the tapered threaded mandrel as shown in the figure. 3. The dial indicator is fixed in a proper position, and the taper threaded mandrel is rotated to detect the beating of the nut cone surface with the dial indicator. In an example, the role of the thin rod portion 14 is to assist in calibration. the

The idea and principle of the present application are: a form and position tolerance detection aid based on the pitch diameter of the thread. The pitch diameter of the thread is positioned with a taper, making the thread mating surface more precise, accurate and free of gaps. Cooperate with other measuring tools, such as Xinyi, V-shaped block or deflection meter, to more accurately measure the shape and position tolerance of the product, such as axiality, circular runout, verticality, position degree, full runout, etc. In addition, the thread part is made into a tapered shape, that is, a tapered thread, and the nut can be automatically centered through the pitch diameter of the thread, saving the centering process. the

The technical problem to be solved by the utility model is to provide a measuring tool for detecting thread position tolerances, which has a simple structure, novel design, small size, convenient operation, simple manufacture and low production cost. , high detection accuracy, easy to popularize and use. Owing to adopting above technical scheme, make the utility model have following advantage effect:

First, the utility model uses taper centering with the tested part during the detection process, and there is no gap in cooperation, so the positioning is more accurate. the

Second, the utility model can greatly improve the detection range by cooperating with other mechanisms, and can measure various tolerances. the

Third, the utility model has a simple and reliable structure and is easy to install. the

The above disclosures are only a few specific implementation examples of the utility model, but the utility model is not limited thereto, and any changes conceivable by those skilled in the art should fall within the protection scope of the utility model. the

Claims (4)

1. A tapered threaded mandrel, an auxiliary tool for detecting measuring tools, characterized in that: the tapered threaded mandrel comprises: a shank, a middle rod, a tapered threaded part, a thin rod and two center hole, The handle is a cylinder, one end of the handle is provided with a center hole, and the other end of the handle is connected to the middle rod; The other end of the middle rod part is connected to the tapered thread part; The tapered thread part is a tapered thread, and the major diameter, minor diameter and middle diameter are all of the same taper; The thin rod part is a cylinder, the thin rod part is connected to the other end of the tapered thread part, and the other of the central hole part is located at the other end of the thin rod part; The shank, the middle rod, the taper thread, the thin rod and the two central holes are concentric. 2. The tapered threaded mandrel according to claim 1, characterized in that: the measuring tool is a concentricity gauge. 3. The tapered threaded mandrel according to claim 1, characterized in that: the measuring tool is a V-shaped block. 4. The tapered threaded mandrel according to claim 1, wherein the measuring tool is a deflection gauge.