Novel tool for turning waist groove of high-lock nut

Abstract

The utility model 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). The tool solves the problem of over-cutting of the hexagon when the waist groove of the high-locking nut is turned, guarantees the product quality, avoids the influence of intermittent cutting vibration generated when the tool touches the hexagon in the cutting process on the twist-off torque, and improves the percent of pass of the twist-off torque of the product.

Description

Technical Field

[0001] The utility model belongs to the technical field of parts processing, in particular to a new type of tool for turning waist grooves of high lock nuts. 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 parts' breaking torque. When high lock nuts are turned on a Swiss machine, 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 can overcut the sharp edges of the hexagonal corners, resulting in a product that doesn't meet product appearance and shape requirements. Furthermore, the intermittent cutting process during hexagonal cutting can easily cause vibration, leading to unstable product breakaway torque. Existing standard arc inserts successfully address these issues, but these inserts require a square toolholder, a type of external turning toolholder that can't be mounted on a Swiss lathe's secondary spindle (a Swiss lathe's secondary spindle mounts an internal turning toolholder). Summary of the Invention

[0003] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a new tool which 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 utility model and the solution of its main technical problems are achieved by adopting the following technical solutions:

[0005] The utility model discloses a new type of tool for turning the waist groove of a high lock nut, comprising a blade, a positioning head A, a positioning bolt, a tool holder, and a positioning head B. The utility model is characterized in that one end of the tool holder is respectively provided with a positioning head A and a positioning head B, and the blade is clamped between the positioning heads A and B and is screwed into the positioning bolt for fixation.

[0006] The blade is provided with a plurality of semicircular arc-shaped tip corners which can be replaced.

[0007] The lower end of the tool holder is provided with an arc-shaped surface, the function of which is to prevent the tool from colliding and interfering with the parts during cutting.

[0008] Compared with the existing technology, the present invention has obvious beneficial effects. It can be seen from the above technical solution that: by providing a positioning head A and a positioning head B at one end of the tool holder, the blade is clamped between the positioning head A and the positioning head B and the positioning bolt is screwed in to fix it. The secondary shaft of the Swiss-type lathe needs to be installed with an internal hole type tool bar, so the tool bar pressing part is designed to be 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 to be a semicircular arc structure. Because of the shape of the blade itself and the use of the tool bar end face screw pressing method, 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 of overcutting of the hexagonal corner of the product by the secondary cutting edge due to the large difference between the size of the hexagonal corner and the diameter of the waist groove and the narrow groove width. It ensures product quality and improves the qualified rate of the product's twisting torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the utility model;

[0010] Figure 2 It is a schematic diagram of the structure of the purchased blade;

[0011] Figure 3 It is the main view for purchasing blades;

[0012] Figure 4 This is a right side view of the positioning head A, the tool holder, and the positioning head B of the utility model;

[0013] Figure 5 This is a diagram of the use state of the utility model;

[0014] Figure 6 It is a usage status diagram of the prior art.

[0015] Marking in the figure

[0016] 1. Blade, 2. Locating head A, 3. Locating bolt, 4. Arc surface, 5. Tool holder, 6. Locating head B, 7. Part, 8. Overcut position. DETAILED DESCRIPTION

[0017] The following is a detailed description of the specific implementation, structure, features and effects of the present invention in conjunction with the accompanying drawings and preferred embodiments.

[0018] The utility model is a new type of tool for turning the waist groove of a high lock nut, comprising a blade 1, a positioning head A2, a positioning bolt 3, a cambered 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 clamped between the positioning head A2 and the positioning head B6 and is screwed into the positioning bolt 3 for fixation, a plurality of semicircular arc-shaped tip angles are provided on the blade 1, and an arc-shaped cambered surface 4 is provided at the lower end of the tool holder 5.

[0019] 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 cut the part 7 with the blade 1 to successfully complete the processing of the waist groove of the part 7.

[0020] 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 of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall 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; One end of the knife seat (5) is provided with a positioning head A (2) and a positioning head B (6), respectively. 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 it.

2. A new tool for turning high lock nut waist grooves according to claim 1, characterized in that: The blade (1) is provided with a plurality of semicircular arc-shaped tip corners.

3. A new tool for turning high lock nut waist grooves according to 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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