CN218362522U

CN218362522U - Spiral bevel gear positioning fixture device

Info

Publication number: CN218362522U
Application number: CN202222205637.7U
Authority: CN
Inventors: 张虎; 于春建; 高晗; 李蔚沅
Original assignee: NANJING GONGDA CNC TECHNOLOGY CO LTD
Current assignee: NANJING GONGDA CNC TECHNOLOGY CO LTD
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2023-01-24
Anticipated expiration: 2032-08-22

Abstract

The utility model relates to the field of spiral bevel gear chamfering processing, and discloses a spiral bevel gear positioning fixture device, which comprises a shaft end cover, a nut, a positioning sleeve, a spring piece, a machine tool base and a conical shaft, wherein the lowest part of the conical shaft of a fixture body is provided with a device which can be fixed on the machine tool base, and the shape of the fixture body can be designed according to the existing shape of the machine tool base; the utility model is used for to the axiality of spiral bevel gear quick location and assurance work piece, the work piece is lifted off fast to do after the chamfer processing is accomplished.

Description

Spiral bevel gear positioning fixture device

Technical Field

The utility model belongs to the technical field of the gear chamfer processing technique and specifically relates to a spiral bevel gear positioning fixture device based on five lathe of double pendulum head type.

Background

The spiral bevel gear has the advantages of strong bearing capacity, stable transmission, high transmission efficiency and the like, so that the spiral bevel gear is widely applied to the fields of aviation, vehicles, machine tools and the like.

The large gear chamfering processing of the spiral bevel gear is mainly realized by semi-automatic milling processing, but the existing spiral bevel gear lacks an effective positioning fixture, so that the processing is not convenient enough, the problem that the error between the simulated cutting and the actual cutting is large exists, the processing production efficiency is seriously influenced, and the manufacturing cost is also increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to current gear low-grade (l) characteristics of production efficiency, provide one kind and be applicable to two rotary table type five-axis machine tools, the hole is the bell mouth, when cutter and work piece contact, provides one kind and makes the work piece resume initial position when turning to through increasing the spring leaf, avoids simulating the error of cutting and actual cutting.

In order to achieve the above object, the utility model provides a following technical scheme:

a spiral bevel gear positioning clamp comprises a shaft end cover 1, a nut 2, a positioning sleeve 3, a spring piece 4, a machine tool base 5, a bevel shaft 6 and a spiral bevel gear 7. The upper end of the central shaft is processed into a conical shaft, and the coaxiality of the gear is improved by utilizing the conical surface, so that the processing precision is improved. Through the matching of the nut 2 and the shaft end with the thread, the micro-adjustment of the spiral bevel gear is realized, and the clamping of the spiral bevel gear in the machining process is ensured. The spring piece 4 is additionally arranged below the positioning sleeve, so that the helical bevel gear can be prevented from recovering an initial position if deflection occurs after the tooth profile chamfer of one tooth is machined, in the machining process, because a double-pendulum-head five-axis machine tool is adopted, the force in the machining does not vertically act on the spring piece, the change of a position point cannot be generated in the machining process, and the reversing machining is carried out on the next tooth profile after the chamfer of a single tooth is machined, at the moment, the spring piece 4 can ensure that the positioning point returns to the initial position, and the error of simulated cutting and actual cutting is avoided.

Preferably, the shaft end cover 1 and the spiral bevel gear 7 are connected through screws.

Preferably, the shaft end cover 1 and the conical shaft 6 are connected through screws.

Preferably, the spiral bevel gear 7 and the positioning sleeve 3 are supported by the nut 2.

Preferably, the positioning sleeve 3 and the machine tool base 5 are connected by the spring piece 4.

Compared with the prior art, the utility model discloses beneficial effect as follows:

the utility model discloses an anchor clamps simple structure, reasonable in design can practice thrift manufacturing cost, can gain good economic benefits again.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a sectional view of the present invention;

in the figure: 1-shaft end cover, 2-nut, 3-locating sleeve, 4-spring leaf, 5-machine tool base, 6-conical shaft and 7-spiral bevel gear.

Detailed Description

In order to clarify technical problems, technical solutions, implementation processes and performance displays, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only. The utility model discloses, be not used for limiting the utility model discloses. Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present disclosure.

Example 1

As shown in fig. 1 and 2, a spiral bevel gear positioning fixture comprises a shaft end cover 1, a nut 2, a positioning sleeve 3, a spring plate 4, a machine tool base 5, a bevel shaft 6 and a spiral bevel gear 7. The upper end of the central shaft is processed into a conical shaft, and the coaxiality of the gear is improved by utilizing the conical surface, so that the processing precision is improved. Through the matching of the nut 2 and the shaft end with the thread, the micro-adjustment of the spiral bevel gear is realized, and the clamping of the spiral bevel gear in the machining process is ensured. The spring piece 4 is additionally arranged below the positioning sleeve, so that the helical bevel gear can be prevented from recovering an initial position if deflection occurs after the tooth profile chamfer of one tooth is machined, in the machining process, because a double-pendulum-head five-axis machine tool is adopted, the force in the machining does not vertically act on the spring piece, the change of a position point cannot be generated in the machining process, and the reversing machining is carried out on the next tooth profile after the chamfer of a single tooth is machined, at the moment, the spring piece 4 can ensure that the positioning point returns to the initial position, and the error of simulated cutting and actual cutting is avoided.

As a possible embodiment, the device that can be fixed to the machine base 5 is provided at the lowermost part of the conical shaft 6 of the clamp body, and the shape thereof may be designed according to the existing shape of the machine base.

As a possible embodiment, the inner hole of the spiral bevel gear 7 is a tapered hole and is matched with the tapered shaft 6, the upper end of the spiral bevel gear is limited by the shaft end cover 1, and the lower end of the spiral bevel gear is limited by the nut 2

The X-direction rotation and the Y-direction rotation have 5 degrees of freedom.

As a possible implementation manner, the shaft end cover 1 and the spiral bevel gear 7 are fixed by 3 screws to limit the Z-rotational freedom degree of the spiral bevel gear 7, three screws are uniformly distributed, an included angle between connecting lines of two adjacent screws and the center of the shaft is 120 °, and the position of a screw driving gear is the intersection part of a radius circle of a large end of an inner taper hole of the spiral bevel gear 7 and a radius circle of a small end of the inner taper hole of the spiral bevel gear 7.

As a possible embodiment, the shaft end cover 1 and the conical shaft 6 are connected by screws, so as to ensure the clamping of the conical shaft 6.

As a possible implementation mode, a thread is machined at the lower shaft section of the conical shaft 6 to ensure that the nut 2 can be matched correctly, and the spring piece 4 is added between the positioning sleeve 3 and the machine tool base 5.

The fixture is installed on a five-axis machine tool, and the shape of the bottom of the fixture device can be changed according to the shape of a machine tool base.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A spiral bevel gear positioning clamp device is characterized by comprising a shaft end cover (1), a nut (2), a positioning sleeve (3), a spring piece (4), a machine tool base (5), a bevel shaft (6) and a spiral bevel gear (7); the device which can be fixed on the machine tool base (5) is arranged at the lowest part of the conical shaft (6) of the clamp body, and the shape of the device can be designed according to the existing shape of the machine tool base.

2. The spiral bevel gear positioning jig device according to claim 1, characterized in that the inner hole of the spiral bevel gear (7) is a taper hole and is matched with the bevel shaft (6), the upper end is provided with the shaft end cover (1), and the lower end is screwed by the nut (2) to limit the degree of freedom of the spiral bevel gear (7).

3. Spiral bevel gear positioning clamp device according to claim 1, characterized in that the freedom of the spiral bevel gear (7) is limited by 3 screws between the shaft end cover (1) and the spiral bevel gear (7).

4. Spiral bevel gear positioning clamp device according to claim 1, characterized in that the lower shaft section of the bevel shaft (6) is threaded to ensure a correct fit with the nut (2).

5. Spiral bevel gear positioning clamp device according to claim 1, characterized in that the spring plate (4) is added between the positioning sleeve (3) and the machine base (5).