Slotting cutter

Abstract

The utility model discloses a slotting cutter, which relates to the technical field of cutters and comprises a cutter bar, a square hole is arranged on the axis of the cutter bar, a square hole positioning surface is arranged on the top surface of the square hole, a triangular notch is arranged on the cutter bar close to the end surface, one side of the triangular notch is vertical to the axis of the cutter bar, and the vertical surface is a triangular notch positioning surface. The axis of the screw hole is perpendicular to the side surface of the square hole; the blade is positioned and mounted in the square hole of the cutter bar, the top surface of the blade is positioned and mounted on the square hole positioning surface of the cutter bar, and the bottom surface of the blade is positioned and mounted on the triangular notch positioning surface of the cutter bar; the fastening screw is mounted in the screw hole in the cutter bar, so that the defects of limited blade mounting space, unreliable clamping, weak blade rigidity and the like when a small-aperture inner hole groove is machined are overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutting tools, and particularly relates to a gear shaper cutter. Background Art

[0002] Traditional machining methods mainly include turning, milling, planing, grinding, drilling, boring, etc. Tools are required for these traditional machining methods, and tools are consumables. Especially when machining some relatively complex parts, the wear of tools is extremely serious. Currently, the gear shaper cutter used is a replaceable blade type gear shaper cutter, which mostly uses end face screws for clamping, and the two included angle side faces and the bottom face are used for installation and positioning. When machining small-diameter inner hole grooves, there are defects such as limited blade installation space, unreliable clamping, and weak blade rigidity. Summary of the Invention

[0003] By providing a gear shaper cutter in an embodiment of the present application, the defects in the prior art such as limited blade installation space, unreliable clamping, and weak blade rigidity when machining small-diameter inner hole grooves are solved.

[0004] An embodiment of the utility model provides a gear shaper cutter, which includes: a tool shank, a square hole is provided on the axis of the tool shank, a square hole positioning surface is provided on the top surface of the square hole, a triangular notch is provided near the end face of the tool shank, one side of the triangular notch is perpendicular to the axis of the tool shank, and the perpendicular surface is the triangular notch positioning surface. A screw hole is provided on the tool shank and the axis of the screw hole is perpendicular to the side surface of the square hole; a blade, the blade is positioned and installed in the square hole of the tool shank, the top surface of the blade is positioned and installed on the square hole positioning surface on the tool shank, and the bottom surface of the blade is positioned and installed on the triangular notch positioning surface on the tool shank; a fastening screw, the fastening screw is installed in the screw hole on the tool shank and the tail of the fastening screw abuts against the side surface of the blade.

[0005] Preferably, the included angle between the square hole on the tool shank and the axis of the tool shank is not greater than 90°.

[0006] Preferably, the blade is in a factory character structure and cutting edges are provided on both sides of the blade.

[0007] One or more of the above technical solutions in the embodiment of the utility model have at least one or more of the following technical effects:

[0008] In a pinion cutter provided by an embodiment of the present utility model, the pinion cutter includes: a tool shank, in which a square hole is provided on the axis of the tool shank, a square hole positioning surface is provided on the top surface of the square hole, a triangular notch is provided near the end face of the tool shank, one side of the triangular notch is perpendicular to the axis of the tool shank, and the perpendicular surface is the positioning surface of the triangular notch. A screw hole is provided on the tool shank and the axis of the screw hole is perpendicular to the side surface of the square hole; a blade, which is positioned and installed in the square hole of the tool shank, the top surface of the blade is positioned and installed on the square hole positioning surface of the tool shank, and the bottom surface of the blade is positioned and installed on the triangular notch positioning surface of the tool shank; a fastening screw, which is installed in the screw hole on the tool shank and the tail of the fastening screw abuts against the side surface of the blade, thus solving the technical problems of limited blade installation space, unreliable clamping, and weak blade rigidity when processing small-diameter inner hole grooves, making full use of the high rigidity of the vertically installed blade; the square inclined hole can not only install the blade to limit the movement of the blade, but also use the inclined surface of the square hole to position the blade radially; the triangular notch on the tool shank, the positioning surface can bear the cutting force during the pinion cutting of the blade and can also position the blade axially; the screw will not bear the cutting force and only plays a fixing role to prevent the blade from falling; during cutting, the cutting force borne by the blade will only make the blade closer to the tool shank positioning surface, and the blade is safe and reliable; the double-headed design of the blade saves resources and improves economy; the square hole and triangular notch for blade installation on the tool shank are convenient for wire cutting processing and the accuracy is easy to guarantee.

[0009] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the following specifically gives the specific embodiments of the present utility model. Brief Description of the Drawings

[0010] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0011] Figure 2 It is a structural sectional view of an embodiment of the present utility model;

[0012] Figure 3 It is an axonometric view of the structure of the tool shank of an embodiment of the present utility model;

[0013] Figure 4 It is another axonometric view of the structure of the tool shank of an embodiment of the present utility model;

[0014] Figure 5 It is a schematic structural diagram of the blade of an embodiment of the present utility model.

[0015] Description of reference numerals: tool shank 1; square hole 11; screw hole 12; square hole positioning surface 13; square hole side surface 14; triangular notch positioning surface 15; blade 2; first cutting edge 21; first positioning surface 22; second positioning surface 23; third positioning surface 25; fourth positioning surface 26; second cutting edge 24; fastening screw 3. Detailed implementation manner

[0016] The embodiment of the present application provides a gear shaper cutter to solve the technical problems of limited blade installation space, unreliable clamping, and weak blade rigidity in the prior art when machining small-diameter internal hole grooves.

[0017] The technical solution in the embodiment of the present utility model has the overall structure as follows: a tool shank, a square hole is provided on the axis of the tool shank, a square hole positioning surface is provided on the top surface of the square hole, a triangular notch is provided near the end surface of the tool shank, one side of the triangular notch is perpendicular to the axis of the tool shank, and the vertical surface is the triangular notch positioning surface. A screw hole is provided on the tool shank and the axis of the screw hole is perpendicular to the side surface of the square hole; a blade, the blade is positioned and installed in the square hole of the tool shank, the top surface of the blade is positioned and installed on the square hole positioning surface of the tool shank, and the bottom surface of the blade is positioned and installed on the triangular notch positioning surface of the tool shank; a fastening screw, the fastening screw is installed in the screw hole of the tool shank and the tail of the fastening screw abuts against the side surface of the blade.

[0018] To make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] Embodiment

[0020] This embodiment provides a gear shaper cutter, please refer to Figure 1 , specifically as follows:

[0021] The gear shaper cutter includes:

[0022] A tool shank 1, a square hole 11 is provided on the axis of the tool shank 1, a square hole positioning surface 13 is provided on the top surface of the square hole 11, a triangular notch is provided near the end surface of the tool shank 1, one side of the triangular notch is perpendicular to the axis of the tool shank 1, and the vertical surface is the triangular notch positioning surface 15. A screw hole 12 is provided on the tool shank 1 and the axis of the screw hole 12 is perpendicular to the side surface 14 of the square hole;

[0023] Blade 2, the blade 2 is positioned and installed in the square hole of the tool shank 1, the top surface of the blade 2 is positioned and installed on the square hole positioning surface 13 of the tool shank 1, and the bottom surface of the blade 2 is positioned and installed on the triangular notch positioning surface 15 of the tool shank 1;

[0024] Specifically, the design of the square hole structure in this embodiment makes full use of the high rigidity of the insert blade; the inclined square hole can not only install the blade 2 to restrict the movement of the blade 2, but also use the inclined surface of the square hole to position the blade 2 radially;

[0025] The triangular notch positioning surface on the tool shank 1 can not only bear the cutting force during the slotting of the blade 2, but also position the blade 2 axially;

[0026] The square hole and the triangular notch on the tool shank 1 are processed by wire cutting, which is convenient for processing and easy to guarantee the accuracy;

[0027] Fastening screw 3, the fastening screw 3 is installed in the screw hole 12 of the tool shank 1 and the tail of the fastening screw 3 abuts against the side surface of the blade 2.

[0028] Specifically, the fastening screw 3 does not bear the cutting force during use and only plays a fixing role to prevent the blade 2 from falling off.

[0029] Further, the angle between the square hole 11 on the tool shank 1 and the axis of the tool shank 1 is not greater than 90°.

[0030] Specifically, the inclined angle design of the square hole 11 makes the cutting force borne by the blade 2 during cutting only make the blade 2 closer to the square hole positioning surface 13 and the triangular notch positioning surface 15 of the tool shank 1, and the blade 2 is safe and reliable;

[0031] Further, the blade 2 has a factory character shape structure and cutting edges are provided on both sides of the blade 2.

[0032] Specifically, as Figure 5 shown, the blade 2 includes a first cutting edge 21, a first positioning surface 22, a second positioning surface 23, a third positioning surface 25, a fourth positioning surface 26, a second cutting edge 24, a square double-head design, and cutting edges are preferentially designed at both ends of the blade 2, saving resources and improving economy. At the same time, with the shape design of the factory-shaped blade, the included angle of the factory-shaped tool head in this embodiment is preferably 140 degrees, which can fit the tool shank 1 more closely; on the other hand, the tool head can also be a single-head asymmetric design;

[0033] The blade 2 is designed in a factory character shape corresponding to the square hole 11, preferably in a symmetrical factory character shape, and both ends can be used. During installation, one end is inserted into the square hole of the tool shank 1, the third positioning surface 25 or the fourth positioning surface 26 contacts the square hole positioning surface 13, and the first positioning surface 22 or the second positioning surface 23 at the other end contacts the triangular notch positioning surface 15 of the blade 2. After installation in place, tightening the fastening screw 3 on the tool shank 1 can fix the blade 2.

[0034] The length of the third positioning surface 25 or the fourth positioning surface 26 is not greater than the length of the square hole positioning surface 13.

[0035] Specifically, this embodiment relates to a tool shank 1 and a blade 2. As shown in Figure 2 , 3 , 4, and 5, a square hole with an angle not greater than 90° is provided along the axis at the end of the tool shank 1, preferably a square hole of 50 degrees. The inclined surface at the upper part of the square hole is the square hole positioning surface 13 of the blade 2. A triangular notch is designed near the end face of the tool shank 1. One side of the triangular notch is perpendicular to the axis, and this vertical surface is the triangular notch positioning surface 15 of the blade 2. A screw hole 12 is designed on the side of the tool shank 1 for installing the fastening screw 3 to fix the blade 2.

[0036] One or more of the above technical solutions in the embodiment of the present invention have at least one or more of the following technical effects:

[0037] In a gear shaper cutter provided in the embodiment of the present invention, the gear shaper cutter includes: a tool shank, a square hole is provided on the axis of the tool shank, a square hole positioning surface is provided on the top surface of the square hole, a triangular notch is provided near the end face of the tool shank, one side of the triangular notch is perpendicular to the axis of the tool shank, and this vertical surface is the triangular notch positioning surface, a screw hole is provided on the tool shank and the axis of the screw hole is perpendicular to the side surface of the square hole; a blade, the blade is positioned and installed in the square hole of the tool shank, the top surface of the blade is positioned and installed on the square hole positioning surface on the tool shank, the bottom surface of the blade is positioned and installed on the triangular notch positioning surface on the tool shank; a fastening screw, the fastening screw is installed in the screw hole on the tool shank and the tail of the fastening screw abuts against the side surface of the blade, thereby solving the technical problems of limited blade installation space, unreliable clamping, and weak blade rigidity during the processing of small-diameter internal hole grooves, making full use of the high rigidity of the vertically installed blade; the square inclined hole can not only install the blade to limit the movement of the blade, but also use the inclined surface of the square hole to position the blade radially; the triangular notch on the tool shank, the positioning surface can bear the cutting force during the gear shaping of the blade, and can also position the blade axially; the screw will not bear the cutting force and only plays a role in preventing the blade from falling; during cutting, the cutting force borne by the blade will only make the blade closer to the tool shank positioning surface, and the blade is safe and reliable; the double-head design of the blade saves resources and improves economy; the square hole for blade installation and the triangular notch on the tool shank are convenient for wire cutting processing and the accuracy is easy to guarantee.

[0038] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0039] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A gear shaping cutter, characterized in that: The gear shaping cutter comprises: A knife bar, wherein a square hole is provided on the axis of the knife bar, a square hole positioning surface is provided on the top surface of the square hole, a triangular notch is provided near the end surface of the knife bar, one side of the triangular notch is perpendicular to the axis of the knife bar, and the vertical surface is the triangular notch positioning surface, a screw hole is provided on the knife bar, and the axis of the screw hole is perpendicular to the side surface of the square hole; The blade is positioned and installed in the square hole of the blade rod, the top surface of the blade is positioned and installed on the square hole positioning surface of the blade rod, and the bottom surface of the blade is positioned and installed on the triangular notch positioning surface of the blade rod; A fastening screw is installed in a screw hole on the knife bar and a tail of the fastening screw is pressed against the side surface of the blade.

2. The gear shaping cutter according to claim 1, characterized in that: The angle between the square hole on the tool rod and the axis of the tool rod is not greater than 90°.

3. The gear shaping cutter according to claim 1, characterized in that: The blade is of a V-shaped structure and cutting edges are arranged on both sides of the blade.

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