WO2021254025A1

WO2021254025A1 - Air floating gear shaping fixture and gear shaping machine

Info

Publication number: WO2021254025A1
Application number: PCT/CN2021/092496
Authority: WO
Inventors: 成石峰; 汤丽君; 张翰乾; 汤秀清
Original assignee: 广州市昊志机电股份有限公司
Priority date: 2020-06-15
Filing date: 2021-05-08
Publication date: 2021-12-23
Also published as: CN111843562A

Abstract

Disclosed in the present invention are an air floating gear shaping fixture and a gear shaping machine, comprising: an air floating component, provided with a positioning inner hole, a plurality of air outlet holes being provided in the hole wall of the positioning inner hole and distributed in the circumferential direction of the positioning inner hole; a rigid gear supporting structure, used for limiting an axial position of a rigid gear in the positioning inner hole; and a clamping mechanism, used for clamping the rigid gear in the positioning inner hole to the rigid gear supporting structure. When the clamping mechanism is in a loosening state, the rigid gear is placed in the positioning inner hole of the air floating component, compressed air is sprayed out from the air outlet holes, the rigid gear floats and is centered, and then the rigid gear is clamped by the clamping mechanism. According to the technical solution, by adoption of air floating centering, the centering speed is fast, accuracy is high, and labor intensity of workers is greatly reduced. The air floating gear shaping fixture further has a self-cleaning function, that is, after one rigid gear is machined, the rigid gear is taken out, then air of the air floating can be opened, and iron scraps remaining on the air floating component and the rigid gear supporting structure can be blown out, thereby ensuring the clamping accuracy of the next rigid gear.

Description

Air-floating gear shaping fixture and gear shaping machine

Technical field

The invention is used in the field of gear shaping, and particularly relates to an air-floating gear shaping fixture and a gear shaping machine.

Background technique

With the development of the economy, the manufacturing industry's need for automation and unmanned is becoming more and more urgent, making the domestic demand for robots increasing, and the requirements for the accuracy and life of robots are also getting higher and higher. For some joint robots, the key component is the reducer. It can be said that the accuracy of the reducer determines the accuracy and life of the robot.

At present, the rigid wheel of the reducer is produced. In addition to the precision of the gear shaping machine, the gear shaping accuracy is also related to the centering accuracy of the front rigid wheel. The centering accuracy. In the existing fixture, the rigid wheel is calibrated manually with a dial indicator, so that the rigid wheel is centered. After the centering, the bolt is used for clamping. The clamping time is longer than the gear shaping time, resulting in the processing efficiency of the gear shaping machine. Low and there are uncontrollable errors in manual calibration.

Summary of the invention

The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide an air-floating gear shaping fixture and gear shaping machine, which improve the gear shaping accuracy of the rigid wheel and the processing efficiency of the gear shaping machine, and reduce the number of workers. Labor intensity.

The technical solutions adopted by the present invention to solve its technical problems are:

In the first aspect, an air-floating gear shaping fixture includes:

The air-floating component has a positioning inner hole, and the hole wall of the positioning inner hole is provided with a plurality of air outlet holes, and the plurality of air outlet holes are distributed along the circumferential direction of the positioning inner hole;

The rigid wheel support structure is used to limit the axial position of the rigid wheel in the positioning inner hole;

The clamping mechanism is used to clamp the rigid wheel in the positioning inner hole to the rigid wheel supporting structure.

With reference to the first aspect, in some implementations of the first aspect, a convex ring is provided on the hole wall of the positioning inner hole, the air outlet holes are distributed on the convex ring, and the convex ring adopts a slope and The hole wall of the positioning inner hole is transitionally connected.

Combining the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, it further includes a clamp seat, a ring groove is provided on the outer circumferential surface of the air floating component, and the air outlet holes are connected to the ring groove. The clamp seat is provided with a first sink groove, the air floating component is embedded in the first sink groove, and a seal is provided on both sides of the ring groove between the air floating component and the clamp seat. Ring, the clamp seat is provided with an air inlet port connected with the ring groove.

In combination with the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, a damping plug is provided in the air outlet.

Combining the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the clamp seat is provided with a blanking hole inside the first sink.

Combining the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the clamp seat is provided with a second sink groove between the first sink groove and the blanking hole, and the rigid wheel support structure It includes a rigid wheel support ring, the bottom of the rigid wheel support ring is embedded in the second sink groove, and the top of the rigid wheel support ring extends into the inside of the air floating component.

Combining the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the clamping mechanism includes a drive assembly and a plurality of pressure arms, and the plurality of pressure arms are distributed around the air floating component, The pressing arm is connected to the clamp base through a hinge pin, and the driving assembly is used to drive the pressing arm to swing around the hinge pin to clamp or release the rigid wheel in the positioning inner hole.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the drive assembly includes an air cylinder.

Combining the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, it further includes:

The pressing part is used to pad between the pressing arm and the rigid wheel.

In a second aspect, a gear shaper includes the air-floating gear shaper clamp described in any implementation manner of the first aspect.

One of the above technical solutions has at least one of the following advantages or beneficial effects: the clamping mechanism is in a loosened state, the rigid wheel is put into the positioning inner hole of the air floating component, compressed air is sprayed from the air outlet, and the rigid wheel is floated. , Align the rigid wheel, and then clamp the rigid wheel through the clamping mechanism. The technical scheme adopts air-floating centering, which has fast centering speed and high precision, which greatly reduces the labor intensity of workers.

It also has a self-cleaning function, that is, after processing a rigid wheel, the air floating can be opened after the rigid wheel is taken out, and some iron filings remaining on the air floating parts and the rigid wheel supporting structure can be blown out to ensure The clamping accuracy of the next rigid wheel.

The additional aspects and advantages of the present invention will be partially given in the following description, and some will become obvious from the following description, or be understood through the practice of the present invention.

Description of the drawings

The above and/or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

Figure 1 is a schematic structural diagram of an embodiment of the air-floating gear shaping clamp of the present invention in a clamped state;

Figure 2 is a top view of the unclamped structure of the embodiment shown in Figure 1;

Figure 3 is a cross-sectional view at A-A in Figure 2;

Figure 4 is a top view of the clamped structure of the embodiment shown in Figure 1;

Figure 5 is a cross-sectional view at B-B in Figure 4;

Fig. 6 is a perspective view of the structure of the air-floating component of the embodiment shown in Fig. 1;

Fig. 7 is a top view of the matching structure of the air-floating component and the rigid wheel of the embodiment shown in Fig. 1;

Fig. 8 is a cross-sectional view at C-C in Fig. 7.

detailed description

This section will describe the specific embodiments of the present invention in detail. The preferred embodiments of the present invention are shown in the accompanying drawings. The function of the accompanying drawings is to supplement the description of the text part of the manual with graphics, so that people can understand the present invention intuitively and vividly. Each technical feature and overall technical solution of the invention cannot be understood as a limitation on the protection scope of the present invention.

In the present invention, if there is a description of directions (up, down, left, right, front and back), it is only for the convenience of describing the technical solutions of the present invention, and does not indicate or imply that the technical features referred to must have specific The orientation, construction and operation in a specific orientation, therefore cannot be understood as a limitation of the present invention.

In the present invention, "several" means one or more, "multiple" means two or more, "greater than", "less than", "exceeding", etc. are understood to not include the number; "above", "below", and "within" "And so on are understood to include the number. In the description of the present invention, if there is a description of "first" and "second" only for the purpose of distinguishing technical features, it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or Implicitly indicate the sequence of the indicated technical features.

In the present invention, unless specifically defined otherwise, terms such as "setup", "installation", and "connection" should be understood in a broad sense. For example, it may be directly connected or indirectly connected through an intermediary; it may be a fixed connection or The detachable connection can also be integrally formed; it can be a mechanical connection, or it can be an electrical connection or can communicate with each other; it can be a communication between two components or an interaction relationship between two components. Those skilled in the art can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution.

1 to 5, the embodiment of the present invention provides an air-floating gear shaping fixture, which includes an air-floating component 1, a rigid wheel support structure 2 and a clamping mechanism 3. Among them, the air-floating component 1 has a positioning inner hole 11, which is used to cooperate with the rigid wheel 4 to realize the centering of the rigid wheel 4, and the cross-sectional shape of the positioning inner hole 11 is the same and similar to the contour of the rigid wheel 4, for example Roughly round. The hole wall of the positioning inner hole 11 is provided with a plurality of air outlet holes 12, the plurality of air outlet holes 12 are distributed along the circumferential direction of the positioning inner hole 11, and the plurality of air outlet holes 12 are distributed on one or more circumferences. The air outlet hole 12 is used to guide the compressed air to the positioning inner hole 11 and spray it in the axial direction of the positioning inner hole 11. When the rigid wheel 4 is centered, put the rigid wheel 4 into the positioning inner hole 11 of the air floating component 1. There is a gap of about 0.01-0.06 mm between the rigid wheel 4 and the air floating component 1, and compressed air is sprayed from the air outlet 12 to float Just round 4, center just round 4. This technical solution abandons the manual dial indicator to correct the rigid wheel 4 in the prior art. It is a technical solution for the rigid wheel 4 centering. Instead, it adopts air-floating centering, which has fast centering speed and high precision, which greatly reduces the labor of workers. strength.

Referring to FIGS. 3 and 5, the rigid wheel support structure 2 is used to limit the axial position of the rigid wheel 4 in the positioning inner hole 11, that is, to provide support for the rigid wheel 4 in the positioning inner hole 11. The clamping mechanism 3 is used for clamping the rigid wheel 4 in the positioning inner hole 11 to the rigid wheel supporting structure 2. After the rigid wheel 4 is centered by air floatation, the rigid wheel 4 is clamped by the cooperation of the clamping mechanism 3 and the rigid wheel supporting structure 2 to avoid displacement of the rigid wheel during the gear shaping process.

Referring to Figures 6 and 8, the hole wall of the positioning inner hole 11 is provided with a convex ring 13, which extends along the circumferential direction of the positioning inner hole 11, and the air outlet holes 12 are distributed on the convex ring 13. The hole walls of the positioning inner hole 11 are transitionally connected, the cross section of the convex ring 13 is similar to a trapezoid shape, and the arrangement of the convex ring 13 facilitates the rapid centering of the rigid wheel 4 in the positioning inner hole 11.

In some embodiments, referring to Figures 1 to 5, the air-floating gear shaping fixture further includes a fixture seat 5, which serves as a mounting base for the air-floating gear shaping fixture on the one hand to integrate various components; on the other hand, It is also used to position the entire fixture on the work surface of the gear shaper.

The air-floating component 1 can be designed to be polygonal or circular. For example, in the embodiment shown in FIG. 6, the air-floating component 1 has a ring shape, and the air-floating component 1 forms a structure similar to an air-floating bearing. It is understandable that the air-floating component 1 can also directly use an existing air-floating bearing.

Referring to FIG. 6, a ring groove 15 is provided on the outer peripheral surface of the air floating component 1, and the air outlet holes 12 are all connected with the ring groove 15. Referring to Figures 3 and 5, the clamp base 5 is provided with a first sink groove 51, the air floatation component 1 is embedded in the first sink groove 51, and seals are provided on both sides of the ring groove 15 between the air float component 1 and the fixture base 5 The ring 6 is provided with an air inlet port 52 connected to the ring groove 15 on the clamp base 5. The ring groove 15 forms an air cavity between the clamp base 5 and the air floating component 1. After the external air source is connected to the air inlet port 52, the compressed air flows into each air outlet 12 through the air cavity, and is finally sprayed from the inner surface of the positioning inner hole 11. Out, an air flow for centering the rigid wheel 4 is formed.

The distribution of the vent holes 12 and the gas flow rate in each vent hole 12 can affect the centering effect of the rigid wheel 4. Wherein, the air outlet holes 12 are uniformly or non-uniformly distributed in the positioning inner hole 11. In some embodiments, referring to FIG. 8, a damping plug 16 is provided in the air outlet 12, and the damping plug 16 is used to adjust the gas flow rate of each air outlet 12 to ensure that the rigid wheel 4 can receive a more uniform gas force to achieve accuracy. , Quick alignment.

In some embodiments, referring to FIGS. 3 and 5, the clamp base 5 is provided with a blanking hole 53 inside the first sink groove 51, and the clamp base 5 forms a hollow-like structure through the blanking hole 53. Since the cooling fluid needs to be continuously applied during the gear shaping process of the rigid wheel 4, and metal scraps are constantly produced, the blanking hole 53 of the clamp base 5 can directly guide or collect the scraps and the cooling liquid downwards to avoid The impact on the precision and quality of the gear shaping of the rigid wheel 4.

Further, referring to FIG. 3 and FIG. 5, the clamp base 5 is provided with a second sink groove 54 between the first sink groove 51 and the blanking hole 53, and the second sink groove 54 and the first sink groove 51 are distributed in a stepped manner. The second sinking groove 54 is used for positioning and installing the rigid wheel supporting structure 2. The rigid wheel support structure 2 includes a rigid wheel support ring. The bottom of the rigid wheel support ring is embedded in the second sink groove 54 and is fixedly connected to the clamp base 5 by a fastener. The top of the rigid wheel support ring extends into the air floating component 1. It is used to limit the lowest position of the rigid wheel 4 in the positioning inner hole 11, and to provide bottom support for the rigid wheel 4 when the clamping mechanism 3 is in motion.

It is understandable that the rigid wheel supporting structure 2 can also be directly formed by using the structure of the clamp base 5 directly.

The clamping mechanism 3 can adopt the structure of cams, levers, etc. The clamping mechanism 3 can be driven by manual, pneumatic, electric, etc. to achieve clamping. The clamping mechanism 3 should avoid the space above the positioning inner hole 11 to avoid the need for gear shaping. The gear shaping action of the machine causes interference. In some embodiments, referring to Figures 1 to 5, the clamping mechanism 3 includes a drive assembly and a plurality of pressure arms 31, the plurality of pressure arms 31 are distributed around the air floating component 1, the pressure arm 31 through the hinge pin 32 and the clamp The seat 5 is connected, and the pressing arm 31 can swing back and forth with the hinge pin 32 as a fulcrum. The driving assembly is used to drive the pressing arm 31 to swing around the hinge pin 32 to clamp or release the rigid wheel 4 in the positioning inner hole 11.

The driving component can be an air cylinder, a motor, etc., for example, in the embodiment shown in FIG. The drive components are driven by compressed air. The clamping wheel 4 only needs to change the direction of the compressed air, and the loosening is also the case, which is convenient and fast. In other words, the clamping and unclamping of the rigid wheel 4 can be realized only by switching the input direction of the compressed air, which is convenient and fast compared with bolts and can ensure that the clamping force will not be changed due to the operation method of the worker.

In order to prevent the pressing arm 31 from directly acting on the rigid wheel 4, causing deformation or damage to the rigid wheel 4, see Figure 1, Figure 3, Figure 5, the air-floating gear shaping fixture also includes a pressing part 7, which is used for cushioning Between the pressing arm 31 and the rigid wheel 4. Of course, the pressing part 7 needs to avoid the space above the rigid wheel 4 to avoid affecting the toothing of the rigid wheel 4. In view of this, the pressing part 7 may be designed in a ring shape or an arc shape or the like.

The embodiment of the present invention provides a gear shaper, including the air-floating gear shaper fixture in any of the above embodiments. When in use, the air-floating gear shaper fixture is installed on the rotating worktable of the gear shaper, and the gear shaper's drive mechanism drives the gear shaper cutter to shape the rigid wheel 4.

In the description of this specification, the description with reference to the terms "example", "embodiment" or "some embodiments" etc. means that the specific feature, structure, material or characteristic described in combination with the embodiment or example is included in at least the present invention. In one embodiment or example. In this specification, the schematic representations of the above-mentioned terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

Of course, the invention is not limited to the above-mentioned embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention. These equivalent modifications or substitutions are all included in the claims of this application. Within the limited range.

Claims

An air-floating gear shaping fixture, which is characterized in that it comprises:

The air-floating component has a positioning inner hole, and the hole wall of the positioning inner hole is provided with a plurality of air outlet holes, and the plurality of air outlet holes are distributed along the circumferential direction of the positioning inner hole;

The rigid wheel support structure is used to limit the axial position of the rigid wheel in the positioning inner hole;

The clamping mechanism is used to clamp the rigid wheel in the positioning inner hole to the rigid wheel supporting structure.
The air-floating gear shaping fixture according to claim 1, wherein a convex ring is provided on the hole wall of the positioning inner hole, and the air outlet holes are distributed on the convex ring, and the convex ring adopts a slope and a convex ring. The hole wall of the positioning inner hole is transitionally connected.
The air-floating gear shaping fixture according to claim 1 or 2, further comprising a fixture seat, a ring groove is provided on the outer peripheral surface of the air-floating component, and the air outlet holes are all connected with the ring groove , The clamp seat is provided with a first sink groove, the air flotation component is embedded in the first sink groove, and seal rings are provided between the air flotation component and the clamp seat on both sides of the ring groove , The clamp seat is provided with an air inlet port connected with the ring groove.
The air-floating gear shaping fixture according to claim 3, wherein a damping plug is provided in the air outlet hole.
The air-floating gear shaping clamp according to claim 3, wherein the clamp seat is provided with a blanking hole in the inside of the first sink.
The air-floating gear shaping fixture according to claim 5, wherein the fixture seat is provided with a second sink groove between the first sink groove and the blanking hole, and the rigid wheel supporting structure includes a rigid wheel A support ring, the bottom of the rigid wheel support ring is embedded in the second sink groove, and the top of the rigid wheel support ring extends into the inside of the air floating component.
The air-floating gear shaping fixture according to claim 3, wherein the clamping mechanism comprises a drive assembly and a plurality of pressure arms, and the plurality of pressure arms are distributed around the air-floating component, and the pressure The arm is connected to the clamp base through a hinge pin, and the drive assembly is used to drive the pressing arm to swing around the hinge pin to clamp or release the rigid wheel in the positioning inner hole.
8. The air-floating gear shaping fixture according to claim 7, wherein the driving assembly comprises an air cylinder.
The air-floating gear shaping fixture according to claim 7, further comprising:

The pressing part is used to pad between the pressing arm and the rigid wheel.
A gear shaping machine, characterized by comprising the air-floating gear shaping fixture according to any one of claims 1-9.