Novel tool for turning waist groove of high-lock nut

Abstract

The invention discloses a novel tool for turning a waist groove of a high-lock nut, which comprises a blade (1), a positioning head A (2), a positioning bolt (3), a tool apron (5) and a positioning head B (6). The positioning head A (2) and the positioning head B (6) are respectively arranged at one end of the tool apron (5), and the blade (1) is clamped between the positioning head A (2) and the positioning head B (6) and is fixed by screwing the positioning bolt (3). According to the invention, the problem of over-cutting of the hexagon when the waist groove of the high-locking nut is turned is solved, the product quality is ensured, the influence of intermittent cutting vibration generated when the cutter touches the hexagon during cutting on the twist-off torque is avoided, and the percent of pass of the twist-off torque of the product is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of parts processing, and in particular relates to a new tool for turning a waist groove of a high lock nut. Background Art

[0002] In the production of aviation fasteners, the waist groove turning of high lock nuts is a key process; the stability of the waist groove diameter directly guarantees the qualified rate of the part's breaking torque. When high lock nuts are turned on a Swiss-type lathe, due to the special size and structure of the product, the hexagonal corner size of the product is quite different from the waist groove diameter size and the groove width is narrow. When the standard V-shaped 35° blade is used to turn the breaking groove (such as Figure 6 ), the tool's secondary cutting edge will overcut the sharp edge of the hexagonal corner, causing the product's appearance and shape to not meet the requirements; at the same time, the cutting of the hexagonal is intermittent, which is easy to cause vibration, resulting in unstable product torque. The existing standard arc blade can successfully solve the above problems, but the matching tool bar of the arc blade is a square tool bar, which belongs to the external turning tool bar type and cannot be installed on the Swiss machine sub-axis (the Swiss machine sub-axis is installed with the internal hole turning tool bar type). Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a new type of tool that solves the problem of overcutting of hexagonal nuts when turning waist grooves of high-lock nuts, ensures product quality, avoids vibration when cutting hexagonal nuts, and improves the qualified rate of product twisting torque.

[0004] The purpose of the present invention and the solution of its main technical problems are achieved by adopting the following technical solutions: The present invention discloses a new type of tool for cutting the waist groove of a high locking nut, comprising a blade, a positioning head A, a positioning bolt, a tool holder and a positioning head B, and is characterized in that a positioning head A and a positioning head B are respectively arranged at one end of the tool holder, and the blade is inserted between the positioning head A and the positioning head B and is screwed into the positioning bolt for fixing.

[0005] The blade is provided with a plurality of semicircular blade tip corners which can be replaced.

[0006] The lower end of the tool holder is provided with an arc-shaped surface, and the function of the arc surface is to prevent the tool from colliding and interfering with the parts during cutting.

[0007] Compared with the prior art, the present invention has obvious beneficial effects. It can be seen from the above technical scheme that: by arranging positioning head A and positioning head B at one end of the tool holder, the blade is inserted between positioning head A and positioning head B and fixed by screwing in positioning bolts. The secondary shaft of the Swiss-type lathe needs to be installed with an inner hole type tool bar, so the clamping part of the tool bar is designed as a circular structure for easy installation; in order to avoid collision and interference between the tool and the parts during cutting, the front end of the rod is designed as a semicircular arc structure. Because of the shape of the blade itself and the clamping method of the tool bar end face screw, the tool will not interfere with the hexagonal corner of the part during cutting, avoiding overcutting of the part and vibration during processing, and solving the problem that the secondary cutting edge of the tool overcuts the hexagonal corner due to the large difference between the size of the hexagonal corner of the product and the diameter of the waist groove and the narrow groove width. The product quality is guaranteed and the qualified rate of the product twisting torque is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structure of the purchased blade; Figure 3 It is the main view of the blade to be purchased; Figure 4 It is a right side view of the positioning head A, the knife seat, and the positioning head B of the present invention; Figure 5 It is a usage state diagram of the present invention; Figure 6 It is a usage status diagram of the prior art.

[0009] Marking in the figure 1. Blade, 2. Positioning head A, 3. Positioning bolt, 4. Arc surface, 5. Tool holder, 6. Positioning head B, 7. Parts, 8. Overcut position. DETAILED DESCRIPTION

[0010] The specific implementation methods, structures, features and functions of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0011] The present invention discloses a new type of tool for waist groove turning of high lock nuts, comprising a blade 1, a positioning head A2, a positioning bolt 3, a curved surface 4, a tool holder 5, and a positioning head B6, and is characterized in that one end of the tool holder 5 is respectively provided with a positioning head A2 and a positioning head B6, the blade 1 is inserted between the positioning head A2 and the positioning head B6 and is screwed into the positioning bolt 3 for fixing, a plurality of semicircular arc-shaped tool tip angles are provided on the blade 1, and an arc-shaped curved surface 4 is provided at the lower end of the tool holder 5.

[0012] When in use, install the tool holder 5 on the sub-axis tool holder of the Swiss machine, start the Swiss machine, align the blade 1 with the waist groove position of the part 7, and the blade 1 cuts the part 7 to successfully complete the processing of the waist groove of the part 7.

[0013] The above description is only a preferred embodiment of the present invention and does not impose any type of limitation on the present invention. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A new type of tool for turning a high-lock nut waist groove, comprising a blade (1), a positioning head A (2), a positioning bolt (3), a tool holder (5), and a positioning head B (6), characterized in that; A positioning head A (2) and a positioning head B (6) are respectively provided at one end of the blade seat (5); the blade (1) is inserted between the positioning head A (2) and the positioning head B (6) and a positioning bolt (3) is screwed in to fix the blade (1).

2. A new type of tool for turning the waist groove of a high locking nut as claimed in claim 1, characterized in that; The blade (1) is provided with a plurality of semicircular blade tip corners.

3. A new type of tool for turning the waist groove of a high locking nut as claimed in claim 1, characterized in that; The lower end of the knife seat (5) is provided with an arc-shaped curved surface (4).

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