阅读说明：本技术 一种锥孔锥键槽的加工模具及加工方法 (Machining die and machining method for taper hole and taper key groove ) 是由 谢龙德 雷子勤 马洪强 罗捷 雷永志 于 2021-08-27 设计创作，主要内容包括：本发明提供一种锥孔锥键槽的加工模具及加工方法,涉及机械加工技术领域。该锥孔锥键槽的加工模具包括固定座(1)、定位芯(2)、调节螺母(3)和挡圈(4),所述固定座(1)上设有凸台(102)、多个安装孔一(101)和过刀槽一(103)；所述定位芯(2)包括加工段(201)、定位段(202)、螺纹段(203)、安装段(204)、多个安装孔二(205)和倾斜地贯穿定位芯(2)的过刀槽二(206)；该加工方法包括加工模具固定、待加工工件定位及固定和拉削加工。本发明解决了锥孔内键槽加工精度差、效率低的技术问题,且加工方法效率高,适用于大批量产品的加工。(The invention provides a machining die and a machining method for a taper hole and a taper key groove, and relates to the technical field of machining. The processing mold of the taper hole and taper key groove comprises a fixed seat (1), a positioning core (2), an adjusting nut (3) and a check ring (4), wherein a boss (102), a plurality of first mounting holes (101) and a first cutter passing groove (103) are arranged on the fixed seat (1); the positioning core (2) comprises a machining section (201), a positioning section (202), a thread section (203), a mounting section (204), a plurality of second mounting holes (205) and a second cutter passing groove (206) which obliquely penetrates through the positioning core (2); the machining method comprises the steps of fixing a machining die, positioning and fixing a workpiece to be machined and broaching. The invention solves the technical problems of poor machining precision and low efficiency of the key groove in the taper hole, and the machining method has high efficiency and is suitable for machining mass products.)

1. The utility model provides a mold processing of taper hole awl keyway which characterized in that: including fixing base (1), location core (2), adjusting nut (3) and retaining ring (4), wherein:

the fixing seat (1) is of a disc structure, a boss (102) is arranged at the center of the circle of the fixing seat (1), a plurality of first mounting holes (101) are formed in the edge of the fixing seat (1), and a first tool passing groove (103) is formed in the fixing seat (1);

the positioning core (2) is of a stepped shaft structure, the positioning core (2) comprises a processing section (201), a positioning section (202), a thread section (203) and a mounting section (204), the diameters of the processing section, the positioning section (202), the thread section (203) and the mounting section (204) are sequentially increased, and a plurality of mounting holes II (205) and cutter passing grooves II (206) are formed in the positioning core (2); the diameter of the positioning section (202) is the same as that of the outer wall of the taper hole; the second blade passing groove (206) obliquely penetrates through the positioning core (2);

the adjusting nut (3) is arranged on the threaded section (203) of the positioning core (2);

the retainer ring (4) is arranged on the positioning section (202) of the positioning core (2).

2. The mold for machining a tapered keyway according to claim 1, wherein: the number of the first mounting holes (101) is 3-5, the first mounting holes (101) are uniformly distributed on the edge of the fixed seat (1), and each first mounting hole (101) is a stepped hole.

3. The mold for machining a tapered keyway according to claim 1, wherein: the boss (102) is a cylindrical boss, and the diameter of the boss (102) does not exceed 1/3 of the diameter of the fixed seat (1).

4. The mold for machining a tapered keyway according to claim 1, wherein: the first knife passing groove (103) penetrates through the fixed seat (1), the first knife passing groove (103) is a rectangular groove, and the first knife passing groove (103) is perpendicular to the surface of the fixed seat (1).

5. The mold for machining a tapered keyway according to claim 1, wherein: the second mounting holes (205) are formed in the mounting section (204), and each second mounting hole (205) corresponds to the first mounting hole (101).

6. A method for processing a taper hole and taper key groove is based on the processing mould of the taper hole and taper key groove as claimed in claims 1-5,

the method is characterized in that: the method comprises the following steps:

s1, fixing the processing mould of the taper hole and taper key groove on a broaching processing machine tool;

s2, fixing a workpiece to be machined on a machining die of a taper hole taper key groove through a positioning core (2), and rotating an adjusting nut (3) to push a retainer ring (4) to ensure that a generatrix of a taper hole is parallel to the movement track of a broach;

and S3, machining a key groove in the taper hole by using a broach.

Technical Field

The invention relates to the technical field of machining, in particular to a machining die and a machining method for a taper hole and taper key groove.

Background

Because of the generating line in taper hole and the central line nonparallel in hole, the degree of difficulty of processing the keyway in the taper hole is far greater than processing the keyway in straight hole, and especially, when the keyway is parallel with the taper hole generating line, the processing degree of difficulty is bigger. The common machining method of the taper hole inner key groove comprises the following steps: the angle of the molybdenum wire is required to be adjusted to be parallel and consistent with a taper hole bus when the linear cutting key and the slotting machine inserting key are adopted in linear cutting processing, and the debugging difficulty is high; when the slotting machine is used for slotting, an inclined surface tool needs to be made, so that a bus of the taper hole is parallel to the movement track of the slotting tool; the two methods have low efficiency and are not suitable for processing and manufacturing mass products.

In patent CN201210508540.1, a method for machining a key slot in a taper hole is disclosed, which belongs to the field of machining. The method comprises the following steps: providing a workpiece to be processed, wherein a taper hole is formed in the workpiece to be processed; vertically placing a workpiece to be processed on a cutting workbench, and keeping the small end of the taper hole upward so as to enable the central line of the taper hole to be parallel to the motion track of the cutter; determining the central position of a taper hole; taking the central position of the taper hole as a reference, and vertically cutting the workpiece to be processed from the end with the small aperture of the taper hole to obtain a vertical key groove; the vertical key groove forms the top of the key groove to be processed, and two side surfaces of the vertical key groove are symmetrical relative to the center of the taper hole; placing a workpiece to be processed on an inclined plane tool, and enabling a bus of a taper hole to be parallel to the motion track of the cutter; determining the central position of the key slot to be processed by taking two side surfaces of the vertical key slot as references; and vertically cutting the workpiece to be processed by taking the central position of the key groove to be processed and the bottom surface of the end with the small aperture of the taper hole as a reference to obtain the processed key groove. This patent can process in batches.

In patent CN201920250536.7, a taper hole key groove processing fixture is provided, which can quickly position a workpiece to be processed and has higher positioning accuracy. The technical scheme of the patent is as follows: the taper hole key groove machining clamp comprises a transition plate serving as an installation main body; the front end surface of the transition plate is an inclined surface, and the middle part of the transition plate is vertically provided with a guide hole; the rear end face of the transition plate is a vertical face, and a positioning hole is vertically formed in the vertical face; the guide hole penetrates through the middle part of the bottom of the positioning hole; a positioning ring is arranged in the positioning hole and is provided with an inner hole for the key groove broach to pass through; the positioning ring part is inserted into the positioning hole, and the part exposed out of the positioning hole is matched with the outside to form the positioning of the transition plate; a guide sleeve is inserted in the guide hole; the middle section of the guide sleeve is attached to the front end face of the transition plate, the tail section of the guide sleeve is a cylinder and is inserted into the guide hole, and the first section of the guide sleeve is a cone; and a tool passing groove for the key groove broach to pass through is axially arranged on the guide sleeve.

In patent CN201310220307.8, a device for processing a key groove in a taper hole of a large-sized workpiece is disclosed, which comprises a guide rod, a broach blade, a rack guide rail, a clamp body, a positioning pin, a positioning rod, a working table, a feeding working table, a connecting mechanism, a worm gear, a hydraulic cylinder, a machine tool body, a hand-operated feeding device, a broach rod, a main motion hydraulic cylinder, a fixing device and a bearing seat; one end of a working table used for placing and positioning a workpiece is connected with the machine tool body through a fixed hinge support, and the upper end of the hydraulic cylinder is hinged with the other end of the working table. The inner key groove machining device can be used for machining the inner key groove of the hole with the taper of the large workpiece, has the characteristics of small mechanism machining large workpieces, high machining precision and the like, and is simple in structure, convenient to install, high in practicability, and high in standardization and universalization degree of parts and components.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a machining die and a machining method for a taper hole and a taper key groove. The processing die comprises a fixing seat, a positioning core, an adjusting nut and a processing die of a taper hole taper key groove of a check ring. The technical problems of poor machining precision and low efficiency of the key groove in the taper hole are solved.

The purpose of the invention is realized by the following technical scheme:

the utility model provides a mold processing of taper hole awl keyway, includes fixing base, location core, adjusting nut and retaining ring, wherein:

the fixed seat is of a disc structure;

a boss is arranged at the center of the circle of the fixed seat;

the edge of the fixed seat is provided with a plurality of first mounting holes;

a first cutter passing groove is formed in the fixed seat;

the positioning core is of a stepped shaft structure;

the positioning core comprises a processing section, a positioning section, a thread section and an installation section, wherein the diameters of the processing section, the positioning section, the thread section and the installation section are sequentially increased;

a plurality of mounting holes II and cutter passing grooves II are formed in the positioning core;

the diameter of the positioning section is the same as that of the outer wall of the taper hole;

the second tool passing groove obliquely penetrates through the positioning core;

the adjusting nut is arranged on the threaded section of the positioning core;

the retainer ring is arranged on the positioning section of the positioning core.

Optionally or preferably, the number of the first mounting holes is 3-5, and the first mounting holes are uniformly distributed on the edge of the fixing seat.

Alternatively or preferably, each of the mounting holes is a stepped hole.

Alternatively or preferably, the boss is a cylindrical boss, and the diameter of the boss does not exceed 1/3 of the diameter of the fixing seat.

Optionally or preferably, the through-going groove penetrates through the fixed seat.

Optionally or preferably, the first tool passing groove is a rectangular groove.

Optionally or preferably, the first tool passing groove is perpendicular to the surface of the fixed seat.

Optionally or preferably, the second mounting holes are arranged on the mounting section, and each second mounting hole corresponds to a mounting hole.

Alternatively or preferably, the fixed seat and the positioning core are fixed through screws or bolts arranged in the first mounting hole and the second mounting hole.

Based on the technical scheme, the following technical effects can be generated:

the processing die for the taper hole and the taper key groove is suitable for large-batch processing of the key groove in the taper hole. According to the invention, the positioning core in the stepped shaft structure is arranged, the positioning section with the same diameter as the outer wall of the tapered hole is designed, and the positioning core is matched with the adjusting nut and the check ring for use, so that a workpiece to be machined can be stably fixed on the machining die of the tapered hole and the tapered key groove, and the bus of the tapered hole is kept parallel to the movement track of the broach, thus the machining precision is ensured, the production efficiency is improved, and the production cost is reduced.

The invention also provides a method for processing the taper hole and taper key groove, which is based on the processing mould of the taper hole and taper key groove and comprises the following steps:

s1, fixing the processing mould of the taper hole and taper key groove on a broaching processing machine tool;

s2, fixing a workpiece to be processed on a processing die of the taper hole taper key groove through a positioning core, and rotating an adjusting nut to push a retainer ring to ensure that a bus of the taper hole is parallel to the movement track of the broach;

and S3, machining a key groove in the taper hole by using a broach.

The processing method of the taper hole and taper key groove provided by the invention is simple to operate, convenient to implement, capable of easily and stably fixing a workpiece to be processed on the processing die of the taper hole and taper key groove, stable in size of the key groove processed by the method, high in efficiency and suitable for processing large-batch products.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of the installation of the present invention (cross-sectional view);

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic structural view of the fixing base of the present invention;

FIG. 4 is a schematic structural view (cross-sectional view) of a positioning core of the present invention;

FIG. 5 is a schematic view of an adjusting nut according to the present invention;

the reference numbers illustrate:

1-a fixed seat, 2-a positioning core, 3-an adjusting nut, 4-a retainer ring, 5-a workpiece to be processed, 101-a first mounting hole, 102-a boss, 103-a first cutter passing groove, 201-a processing section, 202-a positioning section, 203-a thread section, 204-a mounting section, 205-a second mounting hole and 206-a second cutter passing groove.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should be considered to be absent and not within the protection scope of the present invention.

Example 1:

as shown in fig. 1-5:

this embodiment provides a mold processing of taper hole awl keyway, including fixing base 1, location core 2, adjusting nut 3 and retaining ring 4, wherein:

the fixed seat 1 is of a disc structure;

a boss 102 is arranged at the center of the fixed seat 1;

the edge of the fixed seat 1 is provided with a plurality of first mounting holes 101, and the fixed seat 1 is also provided with a first cutter passing groove 103;

the positioning core 2 is of a stepped shaft structure;

the positioning core 2 comprises a processing section 201, a positioning section 202, a threaded section 203 and a mounting section 204, wherein the diameters of the processing section 201, the positioning section 202, the threaded section 203 and the mounting section 204 are sequentially increased;

a plurality of second mounting holes 205 and second tool passing grooves 206 are formed in the positioning core 2;

the diameter of the positioning section 202 is the same as that of the outer wall of the taper hole;

the second blade passing groove 206 obliquely penetrates through the positioning core 2;

the adjusting nut 3 is arranged on the threaded section 2 of the positioning core 2;

the securing ring 4 is arranged on the positioning section 202 of the positioning core 2.

In this embodiment, the number of the first mounting holes 101 is 3, and the first mounting holes 101 are uniformly distributed on the edge of the fixing base 1.

In this embodiment, each of the first mounting holes 101 is a threaded hole.

In this embodiment, the boss 102 is a cylindrical boss, and the diameter of the boss 102 does not exceed 1/3 of the diameter of the fixing base 1.

In this embodiment, the first knife passing groove 103 penetrates through the fixing base 1.

In this embodiment, the first tool passing groove 103 is a rectangular groove.

In this embodiment, the first tool passing groove 103 is perpendicular to the surface of the fixing base 1.

In this embodiment, the cross-sectional area of the first through-blade slot 103 is larger than that of the second through-blade slot 206.

In this embodiment, the second mounting holes 205 are disposed on the mounting section 204, and each of the second mounting holes 205 corresponds to the first mounting hole 101.

In this embodiment, the fixing base 1 and the positioning core 2 are fixed by screws disposed in the first mounting hole 101 and the second mounting hole 205.

The embodiment also provides a method for processing the taper hole and the taper key groove, which comprises the following steps:

s1, fixing the processing mould of the taper hole and taper key groove on a broaching processing machine tool;

s2, fixing a workpiece to be processed on a processing die of the taper hole taper key groove through the positioning core 2, and rotating the adjusting nut 3 to push the retainer ring 4 to ensure that a generatrix of the taper hole is parallel to the movement track of the broach;

and S3, machining a key groove in the taper hole by using a broach.

The embodiment has the following advantages:

through setting up the location core 2 that is the stepped shaft structure, the design is with the same location section 202 of the diameter of taper hole outer wall, and cooperation adjusting nut 3 and retaining ring 4 use, make the stable mold processing who fixes at taper hole awl keyway of work piece ability to keep the generating line of taper hole parallel with broach movement track, thereby guarantee the machining precision, improve production efficiency, reduction in production cost.

Example 2:

this example differs from example 1 in that:

in this embodiment, the diameter of the fixing seat 1 is larger than that of the positioning core 2.

In this embodiment, the thickness of the fixing base 1 is greater than the thickness of the mounting section 204.

In this embodiment, the number of the first mounting holes 101 is 4, and the first mounting holes 101 are uniformly distributed on the edge of the fixing base 1.

In this embodiment, each of the first mounting holes 101 is a stepped hole.

In this embodiment, the boss 102 is a cylindrical boss, and the diameter of the boss 102 is 1/4 of the diameter of the fixing base 1.

In this embodiment, the cross-sectional area of the first through-blade slot 103 is not smaller than the cross-sectional area of the second through-blade slot 206, and the cross-sectional area of the first through-blade slot 103 may be equal to the cross-sectional area of the second through-blade slot 206.

In this embodiment, the second mounting holes 205 are disposed on the mounting section 204, each second mounting hole 205 corresponds to the first mounting hole 101, and the number of the second mounting holes 205 is 4.

In this embodiment, the fixing seat 1 and the positioning core 2 are fixed by pins disposed in the first mounting hole 101 and the second mounting hole 205.

The method for machining the taper hole and taper key groove in the embodiment is the same as that in embodiment 1.

The embodiment has the following advantages:

through setting up the location core 2 that is the stepped shaft structure, the design is with the same location section 202 of the diameter of taper hole outer wall, and cooperation adjusting nut 3 and retaining ring 4 use, make the stable mold processing who fixes at taper hole awl keyway of work piece ability to keep the generating line of taper hole parallel with broach movement track, thereby guarantee the machining precision, improve production efficiency, reduction in production cost.

Example 3:

this example differs from example 1 in that:

in this embodiment, the diameter of the fixing seat 1 is larger than that of the positioning core 2.

In this embodiment, the thickness of the fixing base 1 is equal to the thickness of the mounting section 204.

In this embodiment, the number of the first mounting holes 101 is 5, and the first mounting holes 101 are uniformly distributed on the edge of the fixing base 1.

In this embodiment, each of the first mounting holes 101 is a stepped hole.

In this embodiment, the boss 102 is a cylindrical boss, and the diameter of the boss 102 is 1/4 of the diameter of the fixing base 1.

In this embodiment, the second mounting holes 205 are disposed on the mounting section 204, each second mounting hole 205 corresponds to the first mounting hole 101, and the number of the second mounting holes 205 is 5.

In this embodiment, a circular groove is formed at one end of the fixing base 1, which is far away from the boss 102, so that the fixing base 1 and the positioning core 2 can be conveniently connected in a positioning manner.

In this embodiment, the fixing seat 1 and the positioning core 2 are fixed by pins disposed in the first mounting hole 101 and the second mounting hole 205.

In this embodiment, the outer wall of the adjusting nut 3 is provided with a plurality of grooves for rotation.

In this embodiment, the length of the retainer ring 4 is equal to the length of the positioning section 202.

The method for machining the taper hole and taper key groove in the embodiment is the same as that in embodiment 1.

The embodiment has the following advantages:

through setting up the location core 2 that is the stepped shaft structure, the design is with the same location section 202 of the diameter of taper hole outer wall, and cooperation adjusting nut 3 and retaining ring 4 use, make the stable mold processing who fixes at taper hole awl keyway of work piece ability to keep the generating line of taper hole parallel with broach movement track, thereby guarantee the machining precision, improve production efficiency, reduction in production cost.

The structures, functions, and connections disclosed herein may be implemented in other ways. For example, the above-described embodiments are merely illustrative, and for example, the fixing base, the positioning core, the adjusting nut, and the retainer ring may have other mounting manners, for example, a plurality of components may be combined or integrated with another component; in addition, functional components in the embodiments herein may be integrated into one functional component, or each functional component may exist alone physically, or two or more functional components may be integrated into one functional component.

The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all shall be covered within the protection scope of the present application.