Convenient screw tap and novel anti-loose cone structure

Abstract

The utility model discloses a convenient screw tap which is integrally formed by a handle part and a processing part, a cutting edge unit of the processing part comprises a first inclined surface, a second inclined surface and a third inclined surface, the first inclined surface is connected with the second inclined surface, and an included angle alpha between the first inclined surface and the second inclined surface is 145-165 degrees. And the second inclined surface is connected with the third inclined surface, and an included angle beta between the second inclined surface and the third inclined surface is 120-135 degrees. The utility model further discloses a novel anti-loose cone structure formed by cutting or tapping of the screw tap. The screw tap can be conveniently and directly used for manufacturing a cone structure with a plurality of inclined planes, the working procedures are few, and the efficiency is high; when the internal thread cone tapped by the screw tap is meshed and matched with the cut external thread cone, large radial force can be generated by small axial clamping force, so that the matching between the cones has an anti-loosening effect.

Description

Technical Field

[0001] The present application relates to the field of tapping and cutting tools and fasteners, and in particular to a convenient tap and a novel anti-loosening tooth wheel structure. Background Art

[0002] The tooth wheel is the threaded structural unit on fasteners such as bolts and nuts. Ordinary thread matching structures do not have an anti-loosening effect and will loosen on their own during severe vibrations. It is necessary to use locking plates, pins, nylon embedding, deformed threads, chemical coatings and other methods to achieve the anti-loosening effect. The present application has redesigned the tooth wheel structure shape to achieve the anti-loosening effect from the root of the tooth wheel.

[0003] Taps are the most mainstream processing tools used by manufacturing operators for tapping and cutting. In the past, companies did not have suitable tap tools for tapping and cutting of unconventional toothed wheels. They often used a separate production method, first wheeling out the ordinary toothed wheel structure, and then further grinding the required toothed wheel shape. The production was more troublesome and the accuracy of the toothed wheel was limited by the technical level of the operator; therefore, a convenient tap was urgently needed to process special toothed wheel structures. Utility Model Content

[0004] Based on the content in the background technology, the utility model provides a convenient tap and a novel anti-loosening tooth wheel structure.

[0005] A convenient tap is disclosed, which is integrally composed of a shank and a processing part, wherein a cutting edge unit of the processing part comprises a first bevel, a second bevel and a third bevel, the first bevel and the second bevel are connected, and an angle α between the first bevel and the second bevel is 145° to 165°, the second bevel and the third bevel are connected, and an angle β between the second bevel and the third bevel is 120° to 135°.

[0006] Preferably, α=154°, β=127°

[0007] A new type of anti-loosening gear structure is disclosed, which is formed by the above-mentioned tap cutting or tapping. When the internal thread gear produced by tapping and the external thread gear produced by cutting cooperate with each other, due to the design of the inclined surface inclination angle within a specific range, when the axial clamping force F reaches the load-keeping range, the radial force f is much larger than F, so a smaller axial clamping force F can be used to generate a larger radial force f, thereby making the cooperation between the gears have an anti-loosening effect.

[0008] Through the above technical solution, the utility model at least includes the following beneficial effects:

[0009] The tap described in the present application can be conveniently used to directly manufacture a gear structure with multiple bevels, with fewer processes and higher efficiency; and when the internal thread gear tapped by the tap and the external thread gear cut by the tap are engaged with each other, a larger radial force can be generated by a smaller axial clamping force, thereby making the cooperation between the gears have an anti-loosening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of a convenient tap described in an embodiment of the present application;

[0011] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0012] Figure 3 It is a schematic diagram of the cooperation between the internal thread roller produced by tapping and the external thread roller produced by cutting using the tap in the embodiment of the present application;

[0013] Figure 4 for Figure 3 Enlarged view of point B in the middle. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the structures related to the present invention.

[0015] In the description of this application, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship are only used for exemplary description and cannot be understood as limiting this patent; if there are terms such as "first", "second", etc., they are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the said features. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0016] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0017] refer to Figure 1 and Figure 2 A convenient tap 1 is integrally formed by a shank 101 and a processing portion 102, wherein the cutting edge unit of the processing portion 102 comprises a first bevel 11, a second bevel 12 and a third bevel 13, wherein the first bevel 11 and the second bevel 12 are connected, and an angle α between the first bevel 11 and the second bevel 12 is 145° to 165°, and the second bevel 12 and the third bevel 13 are connected, and an angle β between the second bevel 12 and the third bevel 13 is 120° to 135°; in a preferred embodiment, α=154°, and β=127°

[0018] The tap 1 can be conveniently used to directly manufacture a gear structure with multiple bevels, with fewer steps and higher efficiency; Figure 3 and Figure 4 , which is a schematic diagram of the cooperation between the internal threaded roller 2 tapped by the tap 1 and the external threaded roller 3 cut by the tap 1. When they cooperate, refer to Figure 4 According to the force analysis, due to the design of the inclined plane angle within a specific range, when the axial clamping force F reaches the load-keeping range, the radial force f is much larger than F, so a larger radial force f can be generated by a smaller axial clamping force F, thereby making the cooperation between the gears have an anti-loosening effect.

[0019] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Based on the present invention and the above description, relevant personnel can make various changes and modifications without departing from the technical idea of ​​the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A convenient tap, comprising a handle (101) and a processing portion (102) integrally formed, characterized in that: The cutting edge unit of the processing portion (102) comprises a first bevel (11), a second bevel (12) and a third bevel (13); the first bevel (11) and the second bevel (12) are connected, and an angle α between the first bevel (11) and the second bevel (12) is 145° to 165°; the second bevel (12) and the third bevel (13) are connected, and an angle β between the second bevel (12) and the third bevel (13) is 120° to 135°.

2. A convenient tap according to claim 1, characterized in that: The α=154°, and the β=127°.

3. A new type of anti-loosening gear structure, characterized by: The threaded tap (1) is cut or tapped by the tap (1) according to claim 1 or 2.

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