Slotting cutter

Abstract

The utility model provides a slotting cutter which comprises a cutter handle. The cutter head sleeves the tail end of the cutter handle; the fastener is used for fastening the cutter head and the cutter handle; and the key is in interference fit with the side walls of the cutter handle and the cutter head and is used for rotating and limiting. According to the slotting cutter, the cutter handle and the cutter head are fastened through the fastening piece, detachable connection of the cutter handle and the cutter head is achieved, cyclic utilization of the cutter handle is achieved, and machining cost is reduced. The cutter handle and the cutter head of the slotting cutter are rotationally limited through the keys, the slotting cutter is simple in structure and low in cost, and it is guaranteed that the cutter can stably and safely work in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool cutters, in particular to a gear shaping cutter. Background Art

[0002] A gear shaping cutter is a gear processing tool, mainly used to process various internal and external cylindrical gears, especially helical cylindrical gears. Its basic working principle is to cut a tooth groove with a certain tooth shape and pitch on the workpiece (usually a blank gear).

[0003] In the prior art, the conventional gear shaping cutter adopts an integral design.

[0004] In the process of realizing the utility model, the inventors found that there are at least the following problems in the prior art: if the cutter head of the gear shaping cutter is damaged during use, the entire gear shaping cutter needs to be scrapped, the tool scrapping cost is high, and the processing cost is significantly increased. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] Therefore, the utility model aims to provide a gear shaping cutter, which adopts a split design of a cutter head and a cutter handle, thereby reducing the scrapping cost and processing cost of the cutter.

[0007] In order to achieve the above-mentioned object, the utility model provides a gear shaping cutter, comprising:

[0008] Handle;

[0009] A knife head, sleeved on the end of the knife handle;

[0010] A fastener, used for fastening the cutter head and the cutter handle;

[0011] The key is interference fit with the side wall of the tool handle and the tool head and is used for rotation limitation.

[0012] According to the gear shaping cutter of the utility model, the handle and the cutter head are fastened with fasteners to achieve detachable connection between the handle and the cutter head, so as to achieve recycling of the handle and reduce processing costs. The handle and the cutter head of the gear shaping cutter of the utility model use keys to achieve rotation limit, which has a simple structure and low cost, and ensures that the tool can work stably and safely during use.

[0013] According to an embodiment of the utility model, the knife handle includes a first handle body and a second handle body, the second handle body is coaxially and integrally connected to the first handle body, and the side wall of the first handle body is a conical surface.

[0014] According to an embodiment of the utility model, a pin is provided at the end of the tool handle, a threaded hole is provided in the middle of the pin, and a first stepped hole matching the pin is provided at one end of the tool head close to the tool handle.

[0015] According to one embodiment of the utility model, at least one first keyway is circumferentially provided on the side wall of the tool handle, and at least one second keyway is circumferentially provided at one end of the tool head close to the tool handle, and the first keyway and the second keyway are combined to fit the key.

[0016] According to an embodiment of the utility model, the cutter head is provided with a second stepped hole at an end away from the cutter handle, and the second stepped hole is connected to the first stepped hole.

[0017] According to an embodiment of the utility model, the fastener is a bolt, and the second stepped hole can completely sink the head of the fastener into the cutter head.

[0018] According to an embodiment of the utility model, two blades are provided on the cutter head.

[0019] According to an embodiment of the utility model, the two blades are symmetrically arranged along two sides of the cutter head.

[0020] According to an embodiment of the utility model, the cutter head is provided with an avoidance surface between the two blades, and the avoidance surface is a curved surface or a folded surface.

[0021] According to an embodiment of the utility model, the single-side gap between the tool handle and the tool head does not exceed 0.01 mm.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. Among them:

[0024] Figure 1 It is a schematic diagram of the overall structure of a gear shaping cutter proposed in one embodiment of the utility model.

[0025] Figure 2 The utility model is a schematic diagram of the exploded structure of a gear shaping cutter provided in one embodiment.

[0026] Figure 3The utility model is a schematic structural diagram of a tool handle of a gear shaping cutter according to an embodiment of the utility model.

[0027] Description of reference numerals:

[0028] 1-cutter head, 2-cutter handle, 3-key, 4-fastener, 11-blade, 12-avoidance surface, 13-second stepped hole, 14-second keyway, 15-first stepped hole, 21-first handle body, 22-second handle body, 23-step surface, 24-first keyway, 25-pin shaft, 26-threaded hole. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0030] Figure 1 Schematic diagram of the overall structure of the gear shaping cutter proposed in one embodiment of the utility model. Figure 1 The embodiment of the utility model provides a gear shaping cutter, comprising a cutter head 1, a cutter handle 2, a key 3 and a fastener 4.

[0031] The tool handle 2 is a connecting component between the machine tool and the cutter head 1, which can realize the related actions of the tool as a whole. The length, diameter and shape of the tool handle 2 are designed according to the actual production task. The cutter head 1 is sleeved on the end of the tool handle 2 to perform the task of part processing. The fastener 4 is used to fasten the cutter head 1 and the tool handle 2. The key 3 has an interference fit with the side walls of the tool handle 2 and the cutter head 1, and is used for rotational limiting, that is, limiting the rotational movement between the cutter head 1 and the tool handle 2. The key 3 is a standard part, which is embedded in the side walls of the tool handle 2 and the cutter head 1, connecting the tool handle 2 and the cutter head 1, and plays a role of circumferential fixation so as to reliably transmit torque.

[0032] According to the gear shaping cutter of the embodiment of the utility model, the shank and the cutter head are fastened with a fastener to realize the detachable connection of the shank and the cutter head, realize the recycling of the shank and reduce the processing cost. The shank and the cutter head of the gear shaping cutter of the embodiment of the utility model use a key to realize the rotation limit, which is not only simple in structure and low in cost, but also ensures that the tool can work stably and safely during use.

[0033] In some embodiments, in combination Figure 2 , Figure 3As shown, the tool handle 2 includes a first handle body 21 and a second handle body 22, the second handle body 22 is coaxially connected to the first handle body 21, and the side wall of the first handle body 21 is a conical surface, which is used to connect with the gear shaping device on the machine tool, so the size of the first handle body 21 is determined by the installation size of the gear shaping device on the machine tool. The diameter of the first handle body 21 gradually decreases along the axial direction toward the machine tool, which is convenient for docking with the gear shaping device on the machine tool, making the processing process stable and reliable.

[0034] The second handle body 22 is cylindrical as a whole, and the size of the second handle body 22 is determined according to the size of the processed part. When processing small inner hole parts, the outer diameter of the second handle body 22 can be smaller than the maximum outer diameter of the first handle body 21. However, if the size of the processed part is larger, in order to increase the overall rigidity of the tool, the outer diameter of the second handle body 22 can also be larger than the maximum outer diameter of the first handle body 21.

[0035] In one example, a step surface 23 is provided at a junction between the second handle body 22 and the first handle body 21 , and an outer diameter of the second handle body 22 is smaller than an outer diameter of the second handle body 22 on the step surface 23 .

[0036] The tool handle 2 and the tool head 1 are clearance matched, and the size of the clearance value is adjusted according to actual needs. For example, the single-side clearance between the tool handle 2 and the tool head 1 does not exceed 0.01 mm.

[0037] It should be noted that the cutter head 1 can be made of different materials according to different materials of processed parts to achieve serialization. The replaceable cutter head can significantly save the processing cost and processing time of the tool.

[0038] In one example, a pin 25 is provided at the end of the handle 2, a threaded hole 26 is provided in the middle of the pin 25, and a first stepped hole 15 adapted to the pin 25 is provided at one end of the cutter head 1 close to the handle 2. The first stepped hole 15 forms a clearance fit with the pin 25. The cutter head 1 is sleeved on the pin 25, which facilitates the replacement and maintenance of the cutter head 1.

[0039] In some embodiments, in combination Figure 2 , Figure 3 As shown, at least one first keyway 24 is provided on the side wall of the shank 2 along the circumferential direction, and at least one second keyway 14 is provided on the end of the cutter head 1 close to the shank 2 along the circumferential direction. The first keyway 24 and the second keyway 14 are combined to form a complete keyway to accommodate the key 3. Since the keyway and the key 3 are interference fit, the key 3 can be pressed into the keyway using a special tool. In this embodiment, the key 3 is a consumable part and is replaced according to actual wear and tear.

[0040] The cutter head 1 is provided with a second stepped hole 13 at one end away from the cutter handle 2. The fastener 4 of the fastener is a bolt. The second stepped hole 13 can completely sink the head of the fastener 4 into the cutter head 1, so that the end surface of the cutter head 1 remains flat, making the appearance more beautiful and avoiding interference with the workpiece. The second stepped hole 13 is connected to the first stepped hole 15, so that the rod of the fastener can pass through the second stepped hole 13 and the first stepped hole 15 and be threadedly connected with the threaded hole 26.

[0041] In one example, the cutter head 1 is provided with two blades 11. The cross section of the blade 11 gradually decreases from the cutter head position to the handle position in the axial direction, and the wider blade end surface at the bottom can improve the rigidity of the cutter head and reduce vibration and deformation during the cutting process. This helps to improve processing accuracy and stability.

[0042] In one example, two blades 11 are symmetrically arranged along the two sides of the cutter head 1. The symmetrical design can ensure that the blades are evenly distributed on the cutter head and reduce vibration or deviation caused by uneven weight or structure. The cutter head 1 is provided with an avoidance surface 12 between the two blades 11. The avoidance surface 12 is a curved surface or a folded surface, which can be selected according to actual needs. The function of the avoidance surface is to avoid the processed parts.

[0043] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] In the description of the present invention, the directions or positional relationships indicated by the terms "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0047] Any process or method description in the flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A gear shaping cutter, characterized in that: include: Handle (2); A knife head (1) is sleeved on the end of the knife handle (2); A fastener (4) for fastening the cutter head (1) and the cutter handle (2); The key (3) is interference-fitted with the side walls of the tool handle (2) and the tool head (1) and is used for rotation limiting.

2. The gear shaping cutter according to claim 1, characterized in that: The knife handle (2) comprises a first handle body (21) and a second handle body (22); the second handle body (22) is coaxially connected to the first handle body (21) and is integrally connected; and the side wall of the first handle body (21) is a conical surface.

3. The gear shaping cutter according to claim 1, characterized in that: A pin shaft (25) is provided at the end of the knife handle (2), a threaded hole (26) is provided in the middle of the pin shaft (25), and a first stepped hole (15) adapted to the pin shaft (25) is provided at an end of the knife head (1) close to the knife handle (2).

4. The gear shaping cutter according to claim 3, characterized in that: At least one first keyway (24) is circumferentially provided on the side wall of the tool handle (2), and at least one second keyway (14) is circumferentially provided on the tool head (1) at one end close to the tool handle (2), and the first keyway (24) and the second keyway (14) are combined to fit the key (3).

5. The gear shaping cutter according to claim 3, characterized in that: The cutter head (1) is provided with a second stepped hole (13) at an end away from the cutter handle (2), and the second stepped hole (13) is connected to the first stepped hole (15).

6. The gear shaping cutter according to claim 5, characterized in that: The fastener (4) is a bolt, and the second stepped hole (13) is capable of completely sinking the head of the fastener (4) into the cutter head (1).

7. The gear shaping cutter according to claim 1, characterized in that: The cutter head (1) is provided with two blades (11).

8. The gear shaping cutter according to claim 7, characterized in that: The two blades (11) are symmetrically arranged along two sides of the cutter head (1).

9. The gear shaping cutter according to claim 8, characterized in that: The cutter head (1) is provided with an avoidance surface (12) between the two blades (11), and the avoidance surface (12) is a curved surface or a folded surface.

10. The gear shaping cutter according to any one of claims 1 to 9, characterized in that: The single-side gap between the knife handle (2) and the knife head (1) does not exceed 0.01 mm.

Images