阅读说明：本技术 基于轴端方槽的轴零件角向定位装置及定位方法 (Shaft part angular positioning device and positioning method based on shaft end square groove ) 是由 万在京 金鑫华 刘正月 于 2021-08-27 设计创作，主要内容包括：本发明涉及基于轴端方槽的轴零件角向定位装置,包括钻模体、钻模板,挡板和螺钉。钻模体开有中心通孔,所述中心通孔与轴零件适配,在中心通孔一端开有方槽,所述方槽垂直于所述中心通孔,且所述方槽相对于中心通孔偏心；钻模体与挡板通过螺钉固定连接,且所述挡板3封闭所述中心通孔另一端；本发明实现了加工轴在一次定位装夹中完成轴径、轴端的钻孔加工,减少了多次装夹带来的误差。更加适用于轴径不大、小孔径钻孔加工。且夹具结构简单、经济、使用方便,大幅提高了生产效率。(The invention relates to an axial part angular positioning device based on an axial end square groove. The drill jig body is provided with a central through hole, the central through hole is matched with the shaft part, one end of the central through hole is provided with a square groove, the square groove is perpendicular to the central through hole, and the square groove is eccentric relative to the central through hole; the drilling die body is fixedly connected with the baffle plate through a screw, and the baffle plate 3 seals the other end of the central through hole; the invention realizes that the processing shaft completes the drilling processing of the shaft diameter and the shaft end in one-time positioning and clamping, and reduces the error caused by multiple times of clamping. The drilling machine is more suitable for drilling small holes with small shaft diameters. And the clamp has simple structure, economy and convenient use, and greatly improves the production efficiency.)

1. Axle part angular positioning device based on axle head square groove, its characterized in that: comprises a drilling die body (1), a drilling template (2), a baffle plate (3) and a screw (4);

the drilling die body (1) is provided with a central through hole, the central through hole is matched with the shaft part, one end of the central through hole is provided with a square groove, the square groove is perpendicular to the central through hole, and the square groove is eccentric relative to the central through hole;

the drilling die body (1) is fixedly connected with the baffle (3) through a screw (4), and the baffle (3) seals the other end of the central through hole;

a boss matched with the central through hole is formed on the drilling template (2), the boss is matched with the square through groove, and the drilling template (2) can cover the central through hole, so that the boss is inserted into the square through groove to form positioning between the drilling template and the drilling template body; an elastic positioning tongue is formed on the boss in a protruding mode, the elastic positioning tongue is of a wedge block structure, the wedge block structure is matched with the end face square groove of the shaft part, and pressure perpendicular to the axial direction can be applied to the end face square groove through elastic deformation, so that the shaft part is positioned in the central through hole;

and a drill jig through hole is formed in the drill jig body (1) or the drill plate (2) and is used for being matched with a machining head to machine the shaft part.

2. The shaft end square groove-based shaft part angular positioning device of claim 1, wherein: the shaft part drilling jig is characterized by further comprising a positioning screw (5), wherein a radial threaded hole is formed in the drilling jig body, the positioning screw (5) is in threaded fit with the radial threaded hole, and the positioning screw is used for pressing the shaft part.

3. The shaft end square groove-based shaft part angular positioning device of claim 1, wherein: the baffle has two screw holes, the brill die body is opened equally has two screw holes, and brill die body (1) and baffle 3 are through passing through two screwed connection, and two screws are central symmetry position.

4. The shaft end square groove-based shaft part angular positioning device of claim 1, wherein: the drill jig body 1 is of a flat cylindrical central through hole structure.

5. The shaft end square groove-based shaft part angular positioning device of claim 1, wherein: the elastic positioning tongue is provided with a positioning part (7a) and a contraction part (7b), the positioning part (7a) is positioned at the large end of the wedge block structure, and the contraction part (7b) is positioned at the small end of the wedge block structure.

6. The shaft end square groove-based shaft part angular positioning device of claim 1, wherein: the angle alpha formed by the wedge-shaped surface of the wedge block structure and the axis of the shaft part is an acute angle.

7. The shaft end square groove-based shaft part angular positioning device of claim 6, wherein: the wedge-shaped surface of the wedge block structure and the axis of the shaft part form an angle alpha of 1-15 degrees.

8. Providing an axial part angular positioning method based on an axial end square groove, assembling an axial part with an end face square groove and the drill plate by using the axial part angular positioning device of the axial end square groove in any one of claims 1 to 7, inserting an elastic positioning tongue of the drill plate into the end face square groove of the axial part, pushing the other end of the axial part into a central through hole of a drill die body, and inserting a bulge of the drill plate into the square through groove to realize the positioning of the drill plate and the drill die body; and pushing the drill jig plate to enable the shaft part to be tightly propped between the baffle plate and the drill jig plate, then screwing the positioning screw, positioning the shaft part in the axial direction and the circumferential direction, and processing through the drill jig body and the drill jig hole of the drill jig plate.

Technical Field

The invention relates to the technical field of drilling fixtures, in particular to an axial part angular positioning device and a positioning method based on an axial end square groove.

Background

Referring to fig. 1a and 1b, the structure of the machined part is schematically illustrated, which is a stepped shaft structure. The small end face is provided with a square groove penetrating through the shaft neck, and a small hole d2 perpendicular to the square groove is required to be processed on the end face. And a round hole d1 which is vertical to the square groove and has position requirements from the large end face is machined on the circumference of the large journal. The large shaft neck and the square groove are positioned on the two sets of drilling fixtures for machining during machining, machining errors exist in square groove machining, the size of the positioning square key is unique, positioning errors exist objectively, two times of positioning machining are time-consuming, and positioning accuracy is not high.

Disclosure of Invention

The purpose of the invention is: the step shaft drilling device and method are simple in structure, high in drilling precision, reliable in angular positioning and convenient to operate.

The technical scheme of the invention is as follows:

providing an axial part angular positioning device based on an axial end square groove, wherein the axial part angular positioning device comprises a drill jig body 1, a drill jig plate 2, a baffle plate 3 and a screw 4;

the drilling die body 1 is provided with a central through hole, the central through hole is matched with the shaft part, one end of the central through hole is provided with a square groove, the square groove is perpendicular to the central through hole, and the square groove is eccentric relative to the central through hole;

the drilling die body 1 is fixedly connected with a baffle 3 through a screw 4, and the baffle 3 seals the other end of the central through hole;

a boss matched with the central through hole is formed on the drilling template 2, the boss is matched with the square through groove, and the drilling template 2 can cover the central through hole so that the boss is inserted into the square through groove to form positioning between the drilling template and the drilling template body; an elastic positioning tongue is formed on the boss in a protruding mode, the elastic positioning tongue is of a wedge block structure, the wedge block structure is matched with the end face square groove of the shaft part, and pressure perpendicular to the axial direction can be applied to the end face square groove through elastic deformation, so that the shaft part is positioned in the central through hole;

and a drill jig through hole is formed in the drill jig body 1 or the drill jig plate 2 and is used for being matched with a machining head to machine the shaft part.

Furthermore, the shaft part further comprises a positioning screw 5, a radial threaded hole is formed in the drill die body, the positioning screw 5 is in threaded fit with the radial threaded hole, and the positioning screw is used for pressing the shaft part.

Furthermore, the baffle has two screw holes, the jig body is opened with two screw holes equally, and jig body 1 and baffle 3 are through two screw connections, and two screws are the central symmetry position.

Further, the drill jig body 1 is of a flat cylindrical central through hole structure.

Furthermore, the elastic positioning tongue is provided with a positioning part 7a and a contraction part 7b, the positioning part 7a is positioned at the large end of the wedge structure, and the contraction part 7b is positioned at the small end of the wedge structure. The local weak part is realized through the contraction part, which is beneficial to the elastic deformation of the elastic positioning tongue.

Furthermore, an angle alpha formed by the wedge-shaped surface of the wedge block structure and the axis of the shaft part is an acute angle; preferably 1 to 15.

Providing an axial part angular positioning method based on an axial end square groove, assembling an axial part with an end face square groove and the drill jig plate by using the axial part angular positioning device of the axial end square groove, inserting an elastic positioning tongue of the drill jig plate 2 into the end face square groove of the axial part, pushing the other end of the axial part into a central through hole of the drill jig body 1, and inserting a bulge of the drill jig plate into the square through groove to realize the positioning of the drill jig plate and the drill jig body; and pushing the drill jig plate to enable the shaft part to be tightly propped between the baffle and the drill jig plate, then screwing the positioning screw 5, positioning the shaft part in the axial direction and the circumferential direction, and processing through the drill jig holes of the drill jig body 1 and the drill jig plate 2.

The invention has the advantages that: the invention adopts the drill plate and the drill plate body to respectively position the square groove and the shaft diameter of the end surface of the shaft part and form a fixed position with the shaft part. The eccentric side of the eccentric elastic positioning tongue at the front end of the drilling template plate is tightly attached to one side of the square groove on the end face of the shaft, and the angular reliable positioning is realized by the method; and the rectangular bulge on the drilling jig plate is matched with the eccentric square through groove on the drilling jig plate, so that the axial, radial and angular effective positioning of the processing shaft is realized. Because the square groove on the drilling jig body piece is eccentric, the drilling jig plate piece is positioned only, and the operation is convenient. The processing shaft completes the drilling processing of the shaft diameter and the shaft end in one-time positioning and clamping, and the error caused by multiple times of clamping is reduced. The drilling machine is more suitable for drilling small holes with small shaft diameters. And the clamp has simple structure, economy and convenient use, and greatly improves the production efficiency.

Drawings

FIG. 1a is a view of a shaft component;

FIG. 1b is a side view of a shaft feature;

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

FIG. 3 is a schematic view of the mounting shaft components of the present invention;

FIG. 4 is a cross-sectional view of the drill die body;

FIG. 5 is a schematic end view of a bushing plate having square through slots;

FIG. 6 is a schematic of a bushing plate configuration;

FIG. 7 is an enlarged view of a portion of the bushing plate;

FIG. 8 is an enlarged view of a portion of the resilient positioning tongue;

FIG. 9 is a schematic view showing the matching of the elastic positioning tongue and the end face square groove;

FIG. 10 is a front view of the bushing plate;

FIG. 11 is a top view of the bushing plate;

FIG. 12 is a cross-sectional view of the drill block and its threaded bore;

FIG. 13 is a cross-sectional view of a baffle;

FIG. 14 is a schematic view of the baffle after installation;

the device comprises a drilling die body 1, a drilling template 2, a baffle 3, a screw 4, a positioning screw 5, a shaft part 6, an elastic positioning tongue 7, a positioning part 7a, a contraction part 7b, a boss 8, a drilling die hole 9 and a drilling die hole 10.

Detailed Description

The present invention is described in further detail below.

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, 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.

The shaft parts machined or corresponding to the present invention are shown in fig. 1a and 1b, but are not limited to the illustrated parts.

Referring to fig. 3 to 14, the drilling device having an angular position with respect to the shaft end square groove of the present invention includes a drill jig body 1, a drill plate 2, a baffle plate 3, a screw 4, and a positioning screw 5.

Referring to fig. 2 to 14, the shaft part angular positioning device based on the shaft end square groove includes a drill jig body 1, a drill jig plate 2, a baffle plate 3 and a screw 4;

the drilling die body 1 is provided with a central through hole, the central through hole is matched with the shaft part, one end of the central through hole is provided with a square groove, the square groove is perpendicular to the central through hole, and the square groove is eccentric relative to the central through hole;

the drilling die body 1 is fixedly connected with a baffle 3 through a screw 4, and the baffle 3 seals the other end of the central through hole;

a boss matched with the central through hole is formed on the drilling template 2, the boss is matched with the square through groove, and the drilling template 2 can cover the central through hole so that the boss is inserted into the square through groove to form positioning between the drilling template and the drilling template body; an elastic positioning tongue is formed on the boss in a protruding mode, the elastic positioning tongue is of a wedge block structure, the wedge block structure is matched with the end face square groove of the shaft part, and pressure perpendicular to the axial direction can be applied to the end face square groove through elastic deformation, so that the shaft part is positioned in the central through hole;

and the drill jig body 1 or the drill jig plate 2 is provided with drill jig through holes 9 and 10 which are used for being matched with a processing head to process on the shaft part.

Referring to fig. 6 to 11, the drill plate 2 has a stepped shaft structure, and the left end of the drill plate has an eccentric rectangular protrusion and an elastic positioning tongue matched with the square groove on the end surface of the part, and the eccentric rectangular protrusion and the elastic positioning tongue are matched with the inner hole and the square through groove of the drill mold body. And a through drill jig hole is formed, and the distance of the guide hole is consistent with the position of a processed part.

Referring to fig. 12 to 14, the baffle 3 is provided with a threaded hole matching with the threaded hole of the jig body. The threaded hole formed in the drill jig body is matched with the threaded hole of the baffle in position and can be connected through screw threads.

The elastic positioning tongue of the drilling template 2 is tightly attached to the inner side wall of the end face square groove of the shaft part, the rectangular boss of the drilling template 2 is matched with the square through groove of the drilling template body in shape, and the rectangular boss is attached to the end face of the shaft part, so that the position of a drilling template hole of the drilling template is consistent with the position to be processed of the end face of the shaft part, and accurate drilling processing of the end face of the shaft can be guided.

The end face of the baffle 3 is attached to and pressed against the end face of the drill jig body, the face of the baffle 3 for sealing the central through hole is a reference face, the position of a shaft shoulder of a drill jig hole of the drill jig body can be guaranteed to be consistent with the position of a shaft part to be processed, and therefore accurate drilling of the shaft part can be guided.

The drill jig body 1 is of a flat cylindrical central through hole structure.

The elastic positioning tongue is provided with a positioning part 7a and a contraction part 7b, the positioning part 7a is positioned at the large end of the wedge block structure, and the contraction part 7b is positioned at the small end of the wedge block structure. The local weak part is realized through the contraction part, which is beneficial to the elastic deformation of the elastic positioning tongue.

The angle alpha formed by the wedge-shaped surface of the wedge block structure and the axis of the shaft part is an acute angle of 1-15 DEG

The foregoing is merely a detailed description of the embodiments of the present invention, and some of the conventional techniques are not detailed. The scope of the present invention is not limited thereto, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.