CN215824442U

CN215824442U - Cutter structure for processing discontinuous tooth surface

Info

Publication number: CN215824442U
Application number: CN202121711614.2U
Authority: CN
Inventors: 钱冬
Original assignee: Glvck Machinery Manufacture Co ltd
Current assignee: Glvck Machinery Manufacture Co ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-02-15
Anticipated expiration: 2031-07-27

Abstract

The utility model relates to the technical field of machining, in particular to a cutter structure for machining a discontinuous tooth surface. The utility model can efficiently process and produce the mechanical structure with the discontinuous tooth surface, avoids multiple push-pull processes in the traditional processing technology, can make the product with the tooth-lacking structure be formed at one time, not only saves the operation procedures and shortens the operation period, but also can effectively reduce the generation of the step at the root of the structure and improve the product quality.

Description

Cutter structure for processing discontinuous tooth surface

Technical Field

The utility model relates to the technical field of machining, in particular to a cutter structure for machining a discontinuous tooth surface.

Background

In the production and manufacture of automobile gearboxes, structures with discontinuous tooth surfaces, such as gear with missing teeth, are increasingly applied. As shown in fig. 8, a gear structure with discontinuous tooth surfaces is provided, the tooth surface on the upper side of the gear body 90 ' is provided with a first notch 901 ', and the tooth surface on the lower side to the left is provided with a second notch 902 '. When a mechanical part with a tooth surface structure is manufactured by a traditional process, a processing surface of a raw material is processed by a special cutter in a rolling extrusion mode, and the processing process can only produce a full-tooth (namely a continuous tooth surface) structure generally, as shown in fig. 9, two groups of hobbing cutters 1 ' are arranged on two sides of the raw material 9 ', any group of hobbing cutters 1 ' can move towards one side of the raw material 9 ', so that the surface of the raw material 9 ' is extruded, the raw material 9 ' is also connected to a rotating shaft in a shaft connecting mode, the rotating shaft and the raw material 9 ' are fixed between the two groups of hobbing cutters 1 ' through a rotating shaft seat 2 ', the surface of the raw material 9 ' is contacted and extruded through the hobbing cutters 1 ', and the surface of the raw material 9 ' is extruded to carve a continuous tooth surface in the rolling process of the hobbing cutters 1 '. In addition, some manufacturing processes produce such structures with discontinuous tooth surfaces through steps such as hobbing and broaching, for example, after hobbing, a part with discontinuous tooth surfaces is formed after multiple broaching operations. However, these methods are not easy to control the dimensions and symmetry of the part, and even result in a more pronounced step structure at the root of the finished product. The meshing impact of the gear in high-speed operation is a main factor for generating vibration and noise in the operation of the gearbox, the existence of the step at the root part of the gear is one of important reasons for causing the problems, and the step position is a concentrated point of structural bending fatigue (the position is easy to generate cracks due to stress concentration in the production process, particularly the quenching process) and is a hidden danger position for causing the gear to be easy to break. Therefore, after the gear is produced by the traditional process, the step structure needs to be eliminated after the gear is subjected to the post-processing treatment. Therefore, the number of the parts machining processes is increased, the production efficiency cannot be improved, and the machining cost and the operation time are increased finally. The existing market is accompanied with the emergence of various diversified mechanical products, the demand for the tooth-lacking structure is more and more, and the traditional equipment and process can not meet the manufacturing demand of the structure of the discontinuous tooth surface.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a cutter structure for processing discontinuous tooth surfaces, and the technical problems are solved.

The technical problem solved by the utility model can be realized by adopting the following technical scheme:

a cutter structure for processing discontinuous tooth surfaces comprises a cutter body, wherein the cutter body comprises a cutter handle and a cutter head, the cutter head is upwards connected with the cutter handle, the cutter head is provided with a processing tooth surface, the processing tooth surface is pushed along a straight line on the surface of a raw material and then forms a tooth surface on the surface of the raw material,

the upper end face of the tool bit is connected with the tool shank, the lower end face of the tool bit is provided with first concave recesses which are concave upwards, and at least two first concave recesses are adjacently arranged on the lower end face of the tool bit and then formed into the machined tooth surface.

According to the utility model, by arranging the cutter body with the machined tooth surface, the gear shaping machining effect of producing the discontinuous tooth surface on the surface of the raw material in a tool bit linear propulsion mode is realized, the machining process is finished at one step, and the problems such as a gear root step structure and the like are not easy to generate.

The tool bit and the tool handle are of an integrated structure, namely, the tool bit and the tool handle are integrally formed through the same casting mold during manufacturing.

According to the structure, the cutter head and the cutter handle are arranged into an integrally formed structure, so that the structural strength can be ensured, the manufacturing process can be facilitated, the production procedures can be reduced, and the rapid production can be realized only by corresponding to a mold.

The tool bit and the tool handle are of a split type connecting structure, namely, the tool bit and the tool handle are separately manufactured and molded and then connected together to form a tool body for use.

According to the structure, the tool bit and the tool handle are arranged to be of split structures, so that the flexible configuration performance of the tool bit can be ensured, and the same tool handle can be used for adapting to a plurality of tool bits with different machined tooth surfaces, so that the effect of correspondingly producing different products is realized; in addition, through split type structure realization cutter body's shaping, can be in the course of working after the structure that is obstructed or stress concentration leads to crackle, make earlier fracture of tool bit portion or produce deformation more easily to protect the handle of a knife portion, also protected the power structure who is connected with the handle of a knife, this power structure is used for driving cutter body and produces the reciprocating motion action of course of working, thereby order about cutter body and carry out reciprocating motion at the raw materials surface of being processed after the processing flank of tooth that utilizes the tool bit to carve and produce discontinuous flank of tooth.

The left end face or the right end face of the cutter handle is provided with an inclined end face.

According to the utility model, the inclined surface is arranged on the side end surface of the cutter handle, so that the cutter handle has a position correction function, and during correction, a corresponding correction tool with the inclined surface and the vertical surface is contacted with the side end surface of the cutter handle and the inclined surface on the side end surface, so that the position of the cutter body is determined, and the cutting depth of the cutter can be further positioned.

The left side terminal surface and the right side terminal surface of handle of a knife all have an inclined end face, and two inclined end faces are the subtend setting.

The utility model can not only use the inclined end surface and the side end surface of the same side surface to carry out position calibration, but also can carry out limit in the left and right directions through the inclined end surface parts of the two side end surfaces, when the machining tooth surface part of the tool bit is pushed along the surface of the material during the surface machining of the material, the left deviation or the right deviation is easy to generate, and a guide groove with guiding function can be configured through the inclined end surfaces on the two side end surfaces of the knife handle, so that the guide groove is positioned above the knife handle, after the position and the processing depth of the cutter body are determined, the height of the guide groove is reduced, and then the inner surface of the guide groove is enabled to be tightly attached to the inclined end surfaces on the two sides of the cutter handle (the inner surface of the guide groove is provided with two inner surfaces corresponding to the inclined end surfaces on the two sides of the cutter handle), the pushing of the cutter body is guided by the guide groove, and the deviation of the cutter body in the left and right directions is limited; in addition, due to the inclined structure of the inclined end face, when the cutter body moves in the guide groove, a downward component force is generated, so that the cutter body cannot move upwards, and the depth consistency of the tooth surface generated by machining is ensured.

Preferably, the inclined end surfaces on the left side end surface and the right side end surface of the cutter handle are arranged in a bilateral symmetry mode.

The cutter handle is provided with a fixing hole, so that gear shaping processing can be conveniently carried out after the cutter handle is connected with the push rod through the fixing hole, when the cutter handle and the push rod are connected, the cutter body is sleeved on the push rod through the fixing hole, then a fixing device is arranged on the push rod, for example, clamp springs are arranged on the rod bodies on the two sides of the cutter body on the push rod and used as the fixing device to limit the front and back movement of the cutter body on the push rod.

The upper end face of the cutter head is provided with a vertical insertion rod, and the lower end face of the cutter handle is provided with a jack which is convenient to be inserted into the insertion rod.

According to the utility model, the insertion of the tool bit and the tool handle is realized by arranging the insertion rod and the insertion hole, so that the tool bit and the tool handle are quickly and conveniently connected, and the flexibility and convenience of tool bit replacement are improved.

The lower end face of the knife handle is provided with a baffle, and the insertion hole is formed in the front side of the baffle.

According to the utility model, the baffle plate is arranged on the cutter handle, so that a certain supporting effect is provided for the inserted cutter head, and the phenomenon that the cutter head is subjected to resistance which falls on the insertion rod completely in the gear shaping processing process to accelerate the structural deformation or fracture of the insertion rod is avoided.

Has the advantages that: by adopting the technical scheme, the mechanical structure with the discontinuous tooth surface can be efficiently processed and produced, multiple push-pull processes in the traditional processing technology are avoided, a product with a tooth-lacking structure can be formed at one time, the operation procedures are saved, the operation period is shortened, the generation of steps at the root part of the structure can be effectively reduced, and the product quality is improved.

Drawings

FIG. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a schematic diagram of a second embodiment of the present invention;

FIG. 3 is a schematic view of one configuration of the cutting head of the present invention;

FIG. 4 is a schematic view of a knife handle of the present invention viewed at a right viewing angle;

FIG. 5 is a schematic view of a third embodiment of the present invention;

FIG. 6 is a schematic view of a non-continuous tooth flank structure produced by the structure of FIG. 5;

FIG. 7 is a schematic diagram of an operational scenario of the present invention;

FIG. 8 is a schematic view of a prior art gear structure having non-continuous tooth surfaces;

FIG. 9 is a schematic illustration of a prior art process for producing a continuous tooth surface configuration.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific drawings. It is noted that the terms "first," "second," "third," "fourth," and the like (if any) in the description and in the claims of the utility model are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises" or "comprising," and any variations thereof, are intended to cover non-exclusive inclusions, such that a product or apparatus that comprises a list of elements or units is not necessarily limited to those elements or units expressly listed, but may include other elements or units not expressly listed or inherent to such product or apparatus.

Referring to fig. 1, a cutter structure for machining a discontinuous tooth surface includes a cutter body including a shank 101 and a tool tip 102, the tool tip 102 is connected to the shank 101, the upper shank 101 and the lower tool tip 102 are separated by a dotted line in the drawing, the shank 101 is connected to a push rod (not shown in the drawing) and then moves in a pushing direction, the tool tip 102 directly contacts a surface of a workpiece to be machined (a machining tooth surface of the tool tip is submerged below the surface of the workpiece to be machined during machining), and an initial position of the tool tip is located outside one end surface of the workpiece to be machined; the tool tip 102 is provided with a machined tooth surface 103, which is formed on the surface of the material after advancing the material surface along a straight line by the machined tooth surface 103.

The upper end face of the tool bit 102 is connected with the tool shank 101, the lower end face of the tool bit 102 is provided with first concave recesses which are concave upwards, and at least two first concave recesses are adjacently arranged on the lower end face of the tool bit 102 and then are molded into a machined tooth surface 103.

It should be noted that, a certain distance may be provided between two adjacent first recesses, so as to form a notch forming portion, and the notch forming portion forms a notch on the discontinuous tooth surface after the workpiece to be machined is machined by the gear shaping.

In some embodiments, in order to correspond to a workpiece to be machined having a curvature, a second recess may be formed on the lower end surface of the tool tip 102, the second recess corresponding to the curvature of the surface of the workpiece to be machined, and each of the first recesses may be sequentially formed on the inner surface of the second recess. The structure shown in fig. 1 is the structure in which the first recess is disposed in the second recess.

As shown in fig. 5 and 6, the machining tooth surface 103 of the tool tip 102 may be a straight machining tooth surface in which the machining teeth are arranged along a straight line, so that the tooth surface 901 of the workpiece 90 formed after machining is also a straight tooth surface.

The cutter body can be arranged into an integrally formed structure or a split type connecting structure. When the tool body is an integrally formed structure, the tool bit 102 and the tool shank 101 are integrally formed, and both are formed by the same mold during manufacturing. Through setting up tool bit 102 and handle of a knife 101 to integrated into one piece structure, can ensure structural strength, also can make things convenient for the manufacturing process to reduce production processes, increase of production.

When the cutter body is a split type connecting structure, the cutter head 102 and the cutter handle 101 are split type connecting structures, that is, the cutter head 102 and the cutter handle 101 are separately manufactured and molded and then connected together to form the cutter body for use.

In some embodiments, as shown in fig. 3 and 4, an upper end surface of the tool bit 102 is provided with a vertical insertion rod 104, and a lower end surface of the tool shank 101 is provided with a plug hole 105 for facilitating insertion with the insertion rod 104. The insertion connection of the tool bit 102 and the tool handle 101 is realized by arranging the insertion connection rod 104 and the insertion hole 105, so that the tool bit 102 and the tool handle 101 are connected quickly and conveniently, and the flexibility and the convenience of replacing the tool bit 102 are improved.

In other embodiments, as shown in fig. 4, a baffle 106 is disposed on the lower end surface of the tool shank 101, and the insertion hole 105 is disposed on the front side of the baffle 106. The baffle 106 is arranged on the cutter handle 101, so that a certain supporting effect is provided for the inserted cutter head 102, and the phenomenon that the cutter head 102 is subjected to resistance which falls on the insertion rod 104 completely in the gear shaping processing process to accelerate structural deformation or fracture of the insertion rod 104 is avoided.

For example, when the tool body corresponding to the tool holder structure shown in fig. 4 is used for machining a workpiece, and during the gear shaping operation in which the tool body is pushed forward after sinking to a certain depth on the surface of the machining material, the direction of the tool body is from right to left in the structure shown in fig. 4, at this time, the tool bit is supported by the baffle 106, and the stress of the bayonet rod is shared.

According to the structure, the cutter head 102 and the cutter handle 101 are arranged to be of a split structure, so that the flexible configuration performance of the cutter head 102 can be ensured, and the same cutter handle 101 can be used for being matched with a plurality of types of cutter heads 102 for machining tooth surfaces, so that the effect of correspondingly producing different products is realized; in addition, through split type structure realization cutter body's shaping, can be in the course of working after the structure that is obstructed or stress concentration leads to crackle, make earlier fracture of tool bit portion or produce deformation more easily to protect the handle of a knife portion, also protected the power structure who is connected with the handle of a knife, this power structure is used for driving cutter body and produces the reciprocating motion action of course of working, thereby order about cutter body and carry out reciprocating motion at the raw materials surface of being processed after the processing flank of tooth that utilizes the tool bit to carve and produce discontinuous flank of tooth.

When the utility model is implemented, in order to ensure the installation position of the cutter body, the structure can be set as follows: the left end face or the right end face of the cutter handle is provided with an inclined end face. As shown in fig. 2, the tool shank 101 has a left inclined end face 1081 on the left side thereof.

In some embodiments, the left side end surface and the right side end surface of the tool shank are provided with an inclined end surface, and the two inclined end surfaces are arranged oppositely. In the structure shown in fig. 1, the left end face of the tool shank 101 has a left inclined end face 1082, the right end face of the tool shank 101 has a right inclined end face 1083, and the two inclined end faces are arranged in an opposite manner.

In the present invention, the inclined surfaces are provided on both the left and right side end surfaces of the holder, so that the position of the holder can be adjusted by using the inclined end surfaces and the side end surfaces of the same side surface, and the inclined end surfaces of both the side end surfaces can be used to limit the position in the left-right direction, for example, as shown in fig. 7, when the surface of the material is processed, the processing tooth surface portion of the tool bit is pushed along the surface of the material, so that the left-right direction is easily deviated, and a guide groove 20 having a guide function can be provided through the inclined end surfaces of both the side end surfaces of the holder, so that the guide groove 20 is positioned above the holder of the tool body 10, and in the processing operation, after the position and the processing depth of the tool body 10 are determined, the groove inner surfaces of the guide groove 20 are brought down to be closely attached to the inclined end surfaces of both the sides of the holder of the tool body 10 (the groove inner surfaces have two groove inner surfaces corresponding to the inclined end surfaces of both the holder), the advance of the cutter body 10 is guided by the guide groove 20, thereby restricting the left-right direction deviation thereof; in addition, due to the inclined structure of the inclined end face, when the tool body 10 moves in the guide groove 20, a downward component force is generated, so that the tool body 10 cannot move upwards, and the depth consistency of the tooth surface generated by machining is ensured.

In some preferred embodiments, the inclined end surfaces on the left side end surface and the right side end surface of the tool shank are arranged in a left-right symmetry mode. As shown in FIG. 1, the structure is that the inclined end surfaces at the left side and the right side of the knife handle are in bilateral symmetry.

The utility model is convenient for the installation of the cutter body, and can be arranged according to the following structure: as shown in fig. 1 and 2, the tool holder 101 has a fixing hole 109 for facilitating the gear shaping process after connecting a push rod (not shown) through the fixing hole 109, when the two are connected, the tool body is sleeved on the push rod through the fixing hole 109, and a fixing device is further disposed on the push rod, for example, snap springs are disposed on the rod body on the push rod at two sides of the tool body as the fixing device to limit the forward and backward movement of the tool body on the push rod.

In conclusion, the cutter body with the machined tooth surface is arranged, so that the gear shaping machining effect of producing the discontinuous tooth surface on the surface of the raw material in a tool bit linear propulsion mode is achieved.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a cutter structure for processing discontinuous flank of tooth, includes the cutter body, its characterized in that, the cutter body includes handle of a knife and tool bit, the tool bit upwards connects the handle of a knife, the tool bit is equipped with the processing flank of tooth, through the processing flank of tooth forms the flank of tooth on the raw materials surface along a straight line after the raw materials surface impels, the up end of tool bit is connected handle of a knife, lower terminal surface are equipped with the first sunken of upwards recessing, at least two first sunken adjacent set up in the shaping does behind the lower terminal surface of tool bit the processing flank of tooth.

2. The tool structure for machining non-continuous tooth surfaces as claimed in claim 1, wherein the tool head and the tool shank are of one-piece construction.

3. The tool structure for machining non-continuous tooth surfaces as claimed in claim 1, wherein the tool bit and the tool shank are of a split type connection structure.

4. The tool structure for machining the discontinuous tooth surfaces according to claim 1, 2 or 3, wherein the left end face or the right end face of the tool shank is provided with an inclined end face.

5. The tool structure for machining the discontinuous tooth surfaces according to the claim 1, the claim 2 or the claim 3, wherein the left side end surface and the right side end surface of the tool shank are respectively provided with an inclined end surface, and the two inclined end surfaces are oppositely arranged.

6. The tool structure for machining non-continuous tooth surfaces as claimed in claim 4, wherein the shank has a fixing hole.

7. The tool structure for machining non-continuous tooth surfaces as claimed in claim 5, wherein the shank has a fixing hole.

8. The tool structure for machining the discontinuous tooth surface according to claim 3, wherein the upper end surface of the tool bit is provided with a vertical insertion rod, and the lower end surface of the tool shank is provided with a jack which is convenient to be inserted into the insertion rod.

9. The tool structure for machining the discontinuous tooth surface according to claim 8, wherein a baffle is arranged on the lower end face of the tool shank, and the insertion hole is formed in the front side of the baffle.