CN112045297A

CN112045297A - Friction material increase device and method

Info

Publication number: CN112045297A
Application number: CN202010971703.4A
Authority: CN
Inventors: 王春桂; 董春林; 赵运强; 谭锦红; 邓军; 苗澍
Original assignee: China Uzbekistan Welding Research Institute of Guangdong Academy of Sciences
Current assignee: China Uzbekistan Welding Research Institute of Guangdong Academy of Sciences
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2020-12-08

Abstract

The invention relates to the technical field of friction material increase, and discloses a friction material increase device and a method, wherein the device comprises a bracket, a rolling shaft, a driving device and a feeding mechanism; the rolling shaft is mounted on the support, an adjusting mechanism is sleeved outside the rolling shaft, the position of the adjusting mechanism can be adjusted along the axial direction of the rolling shaft, and the rolling width of the rolling shaft along the axial direction of the rolling shaft can be adjusted; the driving device is installed on the support, and a power output end of the driving device is connected with the rolling shaft and can drive the rolling shaft to rotate; the feeding mechanism and the rolling shaft are oppositely arranged. The device can be used for stirring friction material increase, and is simple and high in adaptability.

Description

Friction material increase device and method

Technical Field

The invention relates to the technical field of friction material increase, in particular to a friction material increase device and a method.

Background

The additive technology plays an important role in the fields of aerospace and the like, the traditional additive technology mainly comprises laser/electron beam additive manufacturing, fusion welding additive manufacturing and the like at present, but the traditional additive technology still has the problems of raw material limitation, difficult forming control, production efficiency limitation, production environment limitation and the like, and has more limitations in actual production. The friction stir additive is a solid-phase additive technology, which can better solve the problems, but the friction stir additive is mainly developed by a friction stir welding technology at present, the production efficiency and the requirements on equipment are still limited, so that the requirements on production equipment are strict, and the application range is difficult to expand.

Disclosure of Invention

The purpose of the invention is: the friction stir material increasing device and the friction stir material increasing method are simple in structure and wide in application range, the friction stir material increasing process can be greatly simplified, the requirements for equipment are greatly reduced, and the production efficiency is improved.

In order to achieve the above object, the present invention provides a friction additive device comprising: the device comprises a bracket, a rolling shaft, a driving device and a feeding mechanism;

the rolling shaft is mounted on the support, an adjusting mechanism is sleeved outside the rolling shaft, the position of the adjusting mechanism can be adjusted along the axial direction of the rolling shaft, and the rolling width of the rolling shaft along the axial direction of the rolling shaft can be adjusted;

the driving device is installed on the support, and a power output end of the driving device is connected with the rolling shaft and can drive the rolling shaft to rotate;

the feeding mechanism and the rolling shaft are arranged oppositely.

Further, adjustment mechanism includes the regulating plate, the regulating plate cover is established on the grinding axle is outside, and with the grinding axle is clearance fit.

Furthermore, the adjusting plates are provided with two adjusting plates, and the rolling width of the rolling shaft is limited by the axial distance between the two adjusting plates.

Furthermore, the support is provided with an adjusting bolt, and the adjusting bolt is fixedly connected with the adjusting plate.

Further, feeding mechanism includes work or material rest and carousel, the carousel is fixed on the work or material rest, the carousel is used for the winding material.

Furthermore, feeding mechanism still includes the pinch roller group, the pinch roller group is installed on the work or material rest, the pinch roller group is used for compressing tightly the material and carry it to the grinding axle.

Furthermore, the pinch roller group includes four pinch rollers, the pinch roller is installed in array on the work or material rest.

Further, the support includes the body frame body and divides the frame body, divide the frame body to fix on the body frame body, the grinding axle is installed on the body frame body, drive arrangement installs divide on the frame body, the body frame body is Jiong font structure, divide the frame body to be 7 font structures.

Furthermore, a bearing is arranged at the connection position of the driving device and the rolling shaft.

Further, the rolling shaft is made of a steel material or a ceramic material or a tungsten-rhenium alloy.

A friction additive method based on a friction additive device as described in any of the above, the method steps comprising:

placing the material to be added on the feeding mechanism;

the driving device is started to drive the rolling shaft to rotate;

the feeding mechanism is started to convey the material to the rolling shaft, and the rolling shaft performs friction rolling on the material to increase the material to the substrate;

after the first layer of material increase is finished, repeating the steps to perform multi-layer material increase;

and after the material increase is finished, closing the driving device and the feeding mechanism.

Compared with the prior art, the friction material increasing device and the method provided by the invention have the beneficial effects that: the simple and effective material increase device is formed by the support, the rolling shaft, the driving device and the feeding mechanism, so that the traditional friction material increase process is greatly simplified, multi-layer material increase can be realized, the limitation on equipment is broken through, and the production efficiency is effectively improved; still through the width of adjustment mechanism adaptability adjustment grinding axle that sets up on the grinding axle, the more not material of equidimension of adaptation, the range of application is wider.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a friction additive manufacturing apparatus according to the present invention;

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

fig. 3 is a schematic structural view of the feeding mechanism of the present invention.

In the figure, 1, a bracket; 101. a main frame body; 102. dividing the frame body; 2. rolling the shaft; 3. a drive device; 4. a feeding mechanism; 401. a material rack; 402. a turntable; 403. a pinch roller; 5. an adjusting plate; 6. a bearing; 7. and adjusting the bolt.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1: a friction additive device.

As shown in fig. 1, a friction material adding device according to a preferred embodiment of the present invention includes a bracket 1, a rolling shaft 2, a driving device 3, and a feeding mechanism 4; the grinding shaft 2 is mounted on the support 1, an adjusting mechanism is sleeved outside the grinding shaft 2, the position of the adjusting mechanism can be adjusted along the axial direction of the grinding shaft 2, and then the grinding width of the grinding shaft 2 along the axial direction can be adjusted; the driving device 3 is mounted on the bracket 1, and a power output end of the driving device 3 is connected with the rolling shaft 2 and can drive the rolling shaft 2 to rotate; the feeding mechanism 4 is installed opposite to the rolling shaft 2.

Based on above-mentioned scheme, support 1 and feeding mechanism 4 are relatively independent, and feeding mechanism 4 sets up for rolling axle 2, guarantees that the direction that the material was sent out corresponds with rolling axle 2 direction. The working process is as follows: the method comprises the following steps of placing a substrate below a grinding shaft 2, leaving a certain gap between the substrate and the grinding shaft 2, placing a material on a feeding mechanism 4, starting the feeding mechanism 4 to convey the material to the grinding shaft 2, starting a driving device 3 to drive the grinding shaft 2 to rotate to grind the material so as to increase the material to the substrate, keeping the feeding mechanism 4 in feeding action after the first-layer material increase is completed, continuing grinding by the grinding shaft 2, and performing second-layer material increase on the basis of the first-layer material increase so as to realize multilayer material increase; meanwhile, in the material increase process, the adjusting mechanism is controlled to slide on the rolling shaft 2 so as to adjust the position of the adjusting mechanism on the rolling shaft 2, and further adjust the width of the rolling shaft 2, so that the device can be adapted to materials with different sizes, and the application range of the device is expanded. Compared with the existing material adding device, the material adding device provided by the embodiment undoubtedly realizes the simplest optimization on the structure, and ensures that the material adding quantity efficiency is not reduced.

Preferably, the adjusting mechanism comprises an adjusting plate 5, and the adjusting plate 5 is slidably mounted on the milling shaft 2 and is in clearance fit with the milling shaft 2. The quantity that regulating plate 5 set up is two, sets up respectively at rolling axle 2 both ends, through two width of sliding adjustment rolling axle 2 on rolling axle 2 simultaneously, perhaps through the width of single regulating plate 5 sliding adjustment rolling axle 2, according to the material with the relative position who rolls axle 2 and the width adaptability adjustment of material, the distance between two regulating plates 5 is the width that rolls of rolling axle 2.

Preferably, an adjusting bolt 7 is arranged on the bracket 1, and the adjusting bolt 7 is fixedly connected with the adjusting plate 5. The number that adjusting bolt 7 set up is unanimous with adjusting plate 5, and adjusting bolt 7 runs through support 1 and is connected with adjusting plate 5, rotates adjusting bolt 7 and can control adjusting plate 5 and slide on rolling axle 2 to reach the purpose of adjustment rolling axle 2 width.

Preferably, as shown in fig. 3, the feeding mechanism 4 comprises a rack 401, a discharge port and a rotating disc 402, the rotating disc 402 is fixed on the rack 401, the rotating disc 402 is used for winding materials, and the discharge port is opposite to the direction of the milling shaft 2. The material winding is on carousel 402 to rolling axle 2 via the discharge gate output, the carousel 402 of setting can make things convenient for banded metal material winding to place, and it is convenient to store.

Preferably, the feeding mechanism 4 further comprises a pressing wheel set mounted on the rack 401, the pressing wheel set is used for pressing and conveying the material to the grinding shaft 2. The main objective of the pinch roller group that sets up is compressing tightly the material, and what general vibration material disk all is metal material, can take place the deformation of certain degree in transportation process, can cause certain influence to vibration material disk, in order to ensure vibration material disk quality and efficiency, sets up the pinch roller group and compresses tightly the transport stability of guaranteeing the material to metal material.

Preferably, the pressing wheel group comprises four pressing wheels 403, and the pressing wheels 403 are arranged on the rack 401 in an array manner. The number of the pressing wheels 403 can be adjusted according to the actual situation, the preferred number of the pressing wheels in this embodiment is four, the distribution mode is 2 x 2 array distribution, the metal material is directly pressed from the pressing wheels 403 in a group of two, and then is sent out to the rolling shaft 2 from the discharge port.

Preferably, as shown in fig. 2, the stand 1 includes a main frame body 101 and a sub-frame body 102, the sub-frame body 102 is fixed to the main frame body 101, the rolling shaft 2 is mounted on the main frame body 101, the driving device 3 is mounted on the sub-frame body 102, the main frame body 101 has an Jiong-shaped structure, and the sub-frame body 102 has a 7-shaped structure. The grinding shaft 2 is installed on two inner side walls of the main frame body 101, the sub frame body 102 is welded on any outer side wall of the main frame body 101, the driving device 3 is installed on the sub frame body 102 and connected with the grinding shaft 2, and the driving device 3 can drive the grinding shaft 2 to rotate to grind and increase materials when being started. The drive means 3 is preferably an electric spindle.

Preferably, a bearing 6 is arranged at the connection position of the driving device 3 and the rolling shaft 2. The bearing 6 is embedded in the main frame body 101, and the smooth operation between the driving device 3 and the rolling shaft 2 can be ensured by arranging the bearing 6.

Preferably, the rolling shaft 2 is made of a steel material, a ceramic material or a tungsten-rhenium alloy. Aiming at different types of materials needing material addition, the material of the rolling shaft 2 is correspondingly changed, and the rolling shaft 2 is made of tungsten-rhenium alloy in the embodiment. The tungsten-rhenium alloy has a series of excellent properties such as high melting point, high strength, high hardness, high plasticity, high recrystallization temperature, high resistivity, high thermal potential value, low vapor pressure, low electron work function and low ductile-brittle transition temperature, and can be better adapted to the friction additive of different metal materials.

Preferably, the surface of the rolling shaft 2 is of a rough structure, and in order to better perform friction material addition with a metal material, the rough surface increases the contact area of the rolling shaft 2 and the metal material, and the contact area is increased, so that the friction effect is better.

Preferably, feeding mechanism 4 and support 1 are two relatively independent structures respectively, can set up respectively on the transfer mechanism of difference and then produce corresponding removal, and specific transfer mechanism can be small-size loop wheel machine, and feeding mechanism 4 and support 1 hoist and mount respectively on the small-size loop wheel machine of difference, and it makes feeding mechanism 4's discharge gate and support 1 on the corresponding grinding shaft 2 position of grinding shaft through the hoist and mount removal, guarantees that the material delivery position corresponds grinding shaft 2.

In conclusion, the friction material increase device provided by the embodiment has the advantages of simple structure and wide application range, greatly simplifies the friction stir material increase process, can realize multilayer material increase, greatly reduces the requirements on equipment, and improves the production efficiency.

Example 2: a friction additive method.

A friction material increase method according to a preferred embodiment of the present invention is based on the friction material increase device described in embodiment 1, and includes the following specific steps:

s1, placing the metal thin strip needing to be added with materials on a feeding mechanism;

s2, starting the driving device, moving the bracket to the initial material adding position, namely above the substrate, and enabling the rolling shaft to face the discharge hole of the feeding mechanism;

s3, starting the feeding mechanism, sending out the metal thin strip, and enabling the rolling shaft to rotate to perform friction material increase on the metal thin strip so as to increase the material on the substrate;

s4, if the width of the additive layer needs to be adjusted in the additive process, adjusting bolts on the support, and adjusting the positions of the adjusting plates on the rolling shafts to increase and decrease the rolling width of the rolling shafts;

s5, repeating the steps S3 and S4 to perform the additive manufacturing of the multilayer metal after the additive manufacturing of the first layer is completed;

and S6, after the material adding is completed, closing the driving device and restoring the friction material adding device.

The substrate material corresponds to the metal material of the additive, namely when the substrate is stainless steel, the material of the additive is also stainless steel.

Preferably, the material of the base plate is added by taking a 304 stainless steel thin strip as a raw material, ten additive layers are realized, and the material of the rolling shaft adopts tungsten-rhenium alloy. After the first layer of material increase is completed, the first layer of material increase step is repeated nine times, and then ten layers of material increase layers can be completed.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A friction additive device, comprising:

a support;

the grinding shaft is arranged on the bracket, an adjusting mechanism is sleeved outside the grinding shaft, the position of the adjusting mechanism can be adjusted along the axial direction of the grinding shaft, and the grinding width of the grinding shaft along the axial direction can be adjusted;

the driving device is arranged on the bracket, and the power output end of the driving device is connected with the rolling shaft and can drive the rolling shaft to rotate;

and the feeding mechanism is arranged opposite to the rolling shaft.

2. The friction additive apparatus of claim 1 wherein said adjustment mechanism comprises an adjustment plate that fits over an exterior of said mill shaft and is in clearance fit with said mill shaft.

3. The friction additive apparatus of claim 2 wherein said adjustment plate is provided in two pieces, the axial distance between said two adjustment plates defining the crush width of said crush shaft.

4. The friction additive apparatus of claim 2 wherein said bracket has an adjustment bolt, said adjustment bolt being fixedly connected to said adjustment plate.

5. The friction additive apparatus of claim 1 wherein the feed mechanism comprises a stack and a turntable, the turntable being secured to the stack, the turntable being configured to wind material.

6. The friction additive apparatus of claim 5 wherein said feed mechanism further comprises a pinch roller set mounted on said stack, said pinch roller set for compacting material and delivering it to said grinding spindle.

7. The friction additive apparatus of claim 6 wherein the pinch roller set comprises four pinch rollers mounted in an array on the stack.

8. The friction additive device of claim 1 wherein said support comprises a main frame body and a sub-frame body, said sub-frame body is fixed to said main frame body, said rolling shaft is mounted to said main frame body, said driving device is mounted to said sub-frame body, said main frame body is Jiong-shaped, and said sub-frame body is 7-shaped.

9. The friction additive apparatus of claim 1 wherein said grinding shaft is made of steel or ceramic material or tungsten-rhenium alloy.

10. A friction additive method based on the friction additive device according to any one of claims 1 to 9, wherein the method comprises the following steps:

placing the material to be added on the feeding mechanism;

the driving device is started to drive the rolling shaft to rotate;