CN115213787A

CN115213787A - Device and method for polishing oxide layer of metal workpiece after heat treatment

Info

Publication number: CN115213787A
Application number: CN202210680786.0A
Authority: CN
Inventors: 刘晓初; 胡彬; 梁忠伟; 萧金瑞; 邝超鹏; 余刁刁; 郑佳鹏; 张艺腾
Original assignee: Guangzhou University
Current assignee: Guangzhou University
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-10-21
Anticipated expiration: 2042-06-16
Also published as: CN115213787B

Abstract

The invention relates to the technical field of metal processing, and discloses an oxide layer polishing device for a metal workpiece after heat treatment, which comprises a main transmission mechanism, wherein a lifting mechanism which can be driven by the main transmission mechanism to reciprocate is arranged below the main transmission mechanism, a cooling mechanism for cleaning the workpiece and taking away heat is arranged on the side edge of the main transmission mechanism, and a workpiece fixing mechanism is arranged at the bottom of the lifting mechanism. The device and the method for polishing the oxide layer of the metal workpiece after heat treatment have the advantages of compact structure, convenience in manufacturing, no need of power supply, convenience in replacement of abraded abrasive paper, labor saving and high efficiency compared with the traditional polishing mode.

Description

Device and method for polishing oxide layer of metal workpiece after heat treatment

Technical Field

The invention relates to the technical field of metal processing, in particular to a device and a method for polishing an oxide layer of a metal workpiece after heat treatment.

Background

After a metal workpiece is subjected to heat treatment, an oxide layer generally appears, mainly generated by oxygen in air and workpiece oxidation, and the oxide layer is thicker as the heating time is longer and the temperature is higher. The work that is usually done after the heat treatment of the metal workpiece is either a hardness test or a wire cutting. The principle of the hardness test is that a Vickers hardness tester presses a workpiece on the surface of the workpiece through a stepping motor, then a reading microscope measures the length of a diagonal line of an indentation, then the Vickers hardness is measured by utilizing a conversion relation between the diagonal line and a test force, and an oxide layer carbide layer generated by heat treatment greatly influences the observation of the indentation. In addition, the existence of impurities on the surface layer of the metal workpiece also affects the conductivity of the workpiece to be machined, and the working efficiency of wire-cut electrical discharge machining is also affected. For polishing the oxide layer of a workpiece subjected to heat treatment hardness test, a current general mode is to use a handheld grinder to polish or use sand paper to polish on a workbench. Although the patent No. CN111360644a provides an improvement on a conventional grinder, the grinding depth is accurate but the grinding depth is not separated from the scope of a grinding wheel, the device is labor-saving, but the relative cutting heat is higher, the surface burn of a workpiece layer is more serious, and the subsequent metallographic observation work is not facilitated. Although the heat that produces is little with abrasive paper polishing oxide layer on the workstation traditionally, and is little to the metallographic structure influence, nevertheless reaches hard, and is very big to the wrist joint injury of people, is not conform to the human engineering principle, rubs the epidermis of hand easily in addition when carrying out the work of polishing, and the wound has the danger of being infected, for this we have provided a metal work piece thermal treatment back oxide layer grinding device and polishing method.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a polishing device and a polishing method for an oxide layer of a metal workpiece after heat treatment, so as to solve the problems.

(II) technical scheme

In order to achieve the above purpose, the invention provides the following technical scheme:

the utility model provides a metal work piece thermal treatment back oxide layer grinding device, includes main drive mechanism, main drive mechanism's below is provided with the elevating system that can be driven by main drive mechanism and carry out reciprocating motion, and main drive mechanism's side is provided with and is used for rinsing the work piece and takes away thermal cooling body, the elevating system bottom is provided with work piece fixed establishment.

Preferably, main drive mechanism includes the top box, first shakes wheel, first cylinder lug, bearing, second cylinder lug, fixed plate and horizontal pole, first shake the wheel and rotate the inside of installing at the top box, first shake the wheel and drive through external driving source, four bearings of fixed mounting on the inner wall of top box, two bearings of upper and lower both sides correspond each other, are provided with the horizontal pole between two bearings of upper and lower both sides, fixed mounting has the fixed plate on the horizontal pole, and the fixed plate is T shape, first shake and take turns to and install the first cylinder lug of two symmetries, be provided with linkage structure on the horizontal pole.

Preferably, the link gear includes the dysmorphism pole, the dysmorphism pole is L shape, the dysmorphism pole rotates the inner wall of installing at the top box, and the one end of dysmorphism pole is located the below of one of them first cylinder lug, fixed mounting has second cylinder lug on the horizontal pole, be provided with the breach on the corresponding second cylinder lug position of dysmorphism pole lower extreme, the breach is in the same place with second cylinder lug joint, when first rocking wheel carries out clockwise rotation, first cylinder lug and dysmorphism pole contact, connects second cylinder lug drive horizontal pole through the dysmorphism pole and moves right, first cylinder lug again with the fixed plate contact afterwards, moves left through fixed plate drive horizontal pole, just so turns into the circular motion of first rocking wheel the horizontal pole reciprocating motion.

Preferably, the lifting mechanism comprises a sleeve, a lifting rod, a fixing frame and a cam rod, the top end of the sleeve is fixedly connected with the cross rod, the lifting rod is inserted into the sleeve, the fixing frame is movably mounted on the outer side of the sleeve through a bolt I, a rotating mechanism is arranged on one side of the fixing frame, the other side of the fixing frame is hinged to the cam rod through a bolt II, and a grinding plate is fixedly mounted at the bottom of the lifting rod.

Preferably, rotary mechanism includes that the second shakes the wheel, the second shakes the wheel and deviates from mount one side and installs the rotation handle, the sleeve corresponds second and shakes wheel one side and sets up jaggedly, the lifter corresponds breach one side and has seted up the tooth's socket, the connecting hole has been seted up on the mount right side, the second shakes the wheel and passes through the connecting hole and connect on the mount, the second shakes wheel and corresponds lifter one side and be the heliciform, the two pitch equals, the second shakes the wheel and constitutes rack and pinion with the lifter, rotate right when the cam lever and lean on to the sleeve, the second shakes wheel and lifter meshing, the second shakes the rotatory lifter that drives of wheel and goes up and down, rotates left when the cam lever, the second shakes wheel and lifter and does not re-mesh, the lifter can freely reciprocate.

Preferably, the workpiece fixing mechanism comprises a water outlet, a working pool and a magnetic switch, the working pool is located under the polishing plate, the water outlet is communicated with the inside of the working pool, and the magnetic switch is arranged on the side edge of the fixing frame. The working pool can control the existence of magnetism through the magnetic switch, and the magnetic switch can be opened to pass through magnetism for the working pool to fix the workpiece when the workpiece is put well, so that the workpiece is prevented from moving when being polished. The working pool recovers water from the cooling mechanism and recovers the water through the water outlet.

Preferably, cooling body includes stopper, water tank, water pipe and water valve switch, the stopper blocks up the water inlet at the water tank, and water piping connection is at the delivery port of water tank, and water valve switch installs the play water end at the water pipe, opens the stopper and can add water to the water tank, when the work of polishing, can open the water valve switch and suitably wash the material, takes away partly heat, prevents that the work piece superficial layer from overheating and burning.

A polishing method of a polishing device for an oxide layer of a metal workpiece after heat treatment comprises the following steps:

1. fixing the workpiece in a working pool;

2. fixing abrasive paper on a grinding plate at the bottom of the lifting rod;

3. the cam rod rotates leftwards, so that the second rocking wheel is disengaged from the lifting rod, and bottom abrasive paper is placed on the surface of a workpiece to be polished;

4. the cam rod rotates rightwards, so that the second rocking wheel is meshed with the lifting rod, and the second rocking wheel is rotated, so that the lifting rod has a downward force effect on the workpiece;

5. and rotating the first rocking wheel and the polishing plate to reciprocate, polishing the oxide layer, and timely opening a water valve switch to spray water on the surface of the workpiece for cooling.

Preferably, after the oxide layer is polished, the device can also polish the surface of the workpiece with lower roughness, the abrasive paper at the bottom of the polishing plate is replaced, and the second rocking wheel is operated when the polishing plate moves inwards, so that the lifting rod moves upwards in a proper amount and is not contacted with the surface of the workpiece, the reciprocating motion of the polishing plate is changed into unidirectional motion, and the polishing work on the surface of the workpiece can be carried out.

(III) advantageous effects

Compared with the prior art, the device and the method for polishing the oxide layer of the metal workpiece after heat treatment have the following beneficial effects:

1. the device and the method for polishing the oxide layer of the metal workpiece after heat treatment have the advantages of compact structure, convenience in manufacturing, no need of power supply, convenience in replacement after abrasive paper is abraded, labor saving and higher efficiency compared with a traditional polishing mode.

2. Compared with the traditional grinding wheel grinding, the device and the method for grinding the oxide layer of the metal workpiece after heat treatment have the advantages of small heat, small damage to the surface layer of the material and an auxiliary cooling mechanism.

3. According to the device and the method for polishing the oxide layer of the metal workpiece after heat treatment, a human body does not need to directly contact the workpiece or grind sand paper, the safety is high, the operation is simple and easy, and the polishing amount can be automatically controlled.

Drawings

FIG. 1 is a schematic perspective view of a polishing device according to an embodiment of the present invention;

FIG. 2 is a schematic side view of a polishing apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a back portion of a polishing apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a main drive mechanism of a polishing apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a lifting mechanism of a polishing apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a lifting rod and a second rocking wheel of the polishing device according to the embodiment of the present invention;

FIG. 7 is a schematic view of a connection structure between a main transmission mechanism and a lifting mechanism of a polishing device according to an embodiment of the present invention;

FIG. 8 is a schematic flow chart illustrating steps performed in a polishing method according to an embodiment of the present invention;

fig. 9 is a schematic view of a transmission process of the polishing device according to the embodiment of the present invention.

In the figure: 1. a top box body; 2. a first rocking wheel; 3. a plug; 4. a water tank; 5. a fixed mount; 6. grinding the plate; 7. a water outlet; 8. a working pool; 9. a magnetic switch; 10. a second rocking wheel; 11. a water pipe; 12. a water valve switch; 13. a cam lever; 14. a first cylindrical bump; 15. a profiled bar; 16. a fixing plate; 17. a bearing; 18. a second cylindrical bump; 19. a lifting rod; 20. a cross bar; 21. a sleeve; 22. a first bolt; 23. and a second bolt.

Detailed Description

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.

Examples

Referring to fig. 1 to 9, an oxide layer polishing apparatus for a metal workpiece after heat treatment according to an embodiment of the present invention includes a main transmission mechanism, a lifting mechanism driven by the main transmission mechanism to reciprocate is disposed below the main transmission mechanism, a cooling mechanism for cleaning the workpiece and removing heat is disposed on a side of the main transmission mechanism, and a workpiece fixing mechanism is disposed at a bottom of the lifting mechanism.

Further, main drive mechanism includes top box 1, first rocking wheel 2, first cylinder lug 14, bearing 17, second cylinder lug 18, fixed plate 16 and horizontal pole 20, first rocking wheel 2 rotates the inside of installing at top box 1, first rocking wheel 2 drives through external driving source, the driving source is the motor, four bearings 17 of fixed mounting on the inner wall of top box 1, two bearings 17 of upper and lower both sides correspond each other, be provided with horizontal pole 20 between two bearings 17 of upper and lower both sides, fixed mounting has fixed plate 16 on the horizontal pole 20, fixed plate 16 is T shape, first rocking wheel 2 is last to install the first cylinder lug 14 of two symmetries, be provided with linkage structure on horizontal pole 20.

Further, the link gear includes special-shaped rod 15, special-shaped rod 15 is L shape, special-shaped rod 15 rotates the inner wall of installing at top box 1, and special-shaped rod 15's one end is located the below of one of them first cylinder lug 14, fixed mounting has second cylinder lug 18 on horizontal pole 20, be provided with the breach on the corresponding second cylinder lug 18 position of special-shaped rod 15 lower extreme, the breach is in the same place with second cylinder lug 18 joint, when first rocking wheel 2 carries out clockwise rotation, first cylinder lug 14 contacts with special-shaped rod 15, connect second cylinder lug 18 drive horizontal pole 20 right movement through special-shaped rod 15, first cylinder lug 14 will contact with fixed plate 16 afterwards, through the motion of fixed plate 16 drive horizontal pole 20 left side, just so convert the circular motion of first rocking wheel 2 into horizontal pole 20 motion repeatedly.

Further, the lifting mechanism comprises a sleeve 21, a lifting rod 19, a fixing frame 5 and a cam rod 13, the top end of the sleeve 21 is fixedly connected with a cross rod 20, the lifting rod 19 is inserted into the sleeve 21, the fixing frame 5 is movably mounted on the outer side of the sleeve 21 through a first bolt 22, a rotating mechanism is arranged on one side of the fixing frame 5, the other side of the fixing frame 5 is hinged with the cam rod 13 through a second bolt 23, and a grinding plate 6 is fixedly mounted at the bottom of the lifting rod 19.

Further, rotary mechanism includes second rocking wheel 10, second rocking wheel 10 deviates from mount 5 one side and installs the rotation handle, sleeve 21 corresponds second rocking wheel 10 one side and has seted up the breach, lifter 19 corresponds breach one side and has seted up the tooth's socket, mount 5 right side has seted up the connecting hole, second rocking wheel 10 passes through the connecting hole and connects on mount 5, second rocking wheel 10 corresponds lifter 19 one side and is the heliciform, the two pitch equals, second rocking wheel 10 and lifter 19 constitute the rack and pinion transmission, when cam lever 13 rotates right and leans on to sleeve 21, second rocking wheel 10 meshes with lifter 19, second rocking wheel 10 is rotatory to be driven lifter 19 and is gone up and down, when cam lever 13 rotates left, second rocking wheel 10 and lifter 19 no longer mesh, lifter 19 can freely reciprocate.

Further, work piece fixed establishment includes delivery port 7, working pool 8 and magnetic switch 9, and working pool 8 is located and polishes the board 6 under, and delivery port 7 communicates the inside of working pool 8, and magnetic switch 9 establishes the side of mount 5. The working pool 8 can control the magnetism through the magnetic switch 9, when the workpiece is placed, the magnetic switch can be turned on to conduct magnetism to the working pool 8 to fix the workpiece, so that the workpiece is prevented from moving when being polished. The working tank 8 recovers water from the cooling mechanism and recovers it through the water outlet 7.

Furthermore, the cooling mechanism comprises a plug 3, a water tank 4, a water pipe 11 and a water valve switch 12, the plug 3 blocks a water inlet of the water tank 4, the water pipe 11 is connected to a water outlet of the water tank 4, the water valve switch 12 is installed at a water outlet end of the water pipe 11, the plug 3 is opened to add water into the water tank 4, when the polishing work is carried out, the water valve switch 12 can be opened to properly wash materials, a part of heat is taken away, and overheating and burning of the surface layer of the workpiece are prevented.

A polishing method of an oxide layer polishing device after metal workpiece heat treatment comprises the following steps:

1. fixing the workpiece in the working pool 8;

2. the abrasive paper is fixed on the grinding plate 6 at the bottom of the lifting rod 19;

3. the cam rod 13 rotates leftwards, so that the second rocking wheel 10 is disengaged from the lifting rod 19, and bottom abrasive paper is placed on the surface of a workpiece to be polished;

4. the cam rod 13 rotates rightwards, so that the second rocking wheel 10 is meshed with the lifting rod 19, and the second rocking wheel 10 is rotated, so that the lifting rod 19 has a downward force effect on the workpiece;

5. the first rocking wheel 10 and the polishing plate 6 are rotated to reciprocate, the oxide layer is polished, and the water valve switch is opened timely to spray water on the surface of the workpiece for cooling.

After the oxide layer is polished, the device can also polish the surface of a workpiece with lower roughness, the abrasive paper at the bottom of the polishing plate 6 is replaced, the second rocking wheel 10 is operated when the polishing plate 6 moves inwards, the lifting rod 19 moves upwards in a proper amount and is not contacted with the surface of the workpiece, the reciprocating motion of the polishing plate is changed into unidirectional motion, and then the workpiece surface can be polished.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a metal work piece thermal treatment back oxide layer grinding device, includes main drive mechanism, its characterized in that: the lifting mechanism capable of being driven by the main transmission mechanism to reciprocate is arranged below the main transmission mechanism, the cooling mechanism used for cleaning the workpiece and taking away heat is arranged on the side edge of the main transmission mechanism, and the workpiece fixing mechanism is arranged at the bottom of the lifting mechanism.

2. The device for polishing the oxide layer of the metal workpiece after the heat treatment according to claim 1, wherein: main drive mechanism includes top box (1), first rocking wheel (2), first cylinder lug (14), bearing (17), second cylinder lug (18), fixed plate (16) and horizontal pole (20), first rocking wheel (2) rotate the inside of installing at top box (1), first rocking wheel (2) are driven through external driving source, and the driving source is the motor, four bearings of fixed mounting (17) on the inner wall of top box (1), two bearings (17) of upper and lower both sides correspond each other, are provided with horizontal pole (20) between two bearings (17) of upper and lower both sides, fixed mounting has fixed plate (16) on horizontal pole (20), and fixed plate (16) are T shape, first rocking wheel (2) are gone up and are installed first cylinder lug (14) of two symmetries, be provided with linkage structure on horizontal pole (20).

3. The device for grinding the oxide layer of the metal workpiece after the heat treatment according to claim 2, wherein: the link gear includes special-shaped rod (15), special-shaped rod (15) are L shape, special-shaped rod (15) rotate and install the inner wall at top box (1), and the one end of special-shaped rod (15) is located the below of one of them first cylinder lug (14), fixed mounting has second cylinder lug (18) on horizontal pole (20), be provided with the breach on the corresponding second cylinder lug (18) position of special-shaped rod (15) lower extreme, the breach is in the same place with second cylinder lug (18) joint.

4. The device for grinding the oxide layer of the metal workpiece after the heat treatment according to claim 2, wherein: the lifting mechanism comprises a sleeve (21), a lifting rod (19), a fixing frame (5) and a cam rod (13), the top end of the sleeve (21) is fixedly connected with a cross rod (20), the lifting rod (19) is inserted into the sleeve (21), the fixing frame (5) is movably mounted on the outer side of the sleeve (21) through a first bolt (22), a rotating mechanism is arranged on one side of the fixing frame (5), the cam rod (13) is hinged to the other side of the fixing frame (5) through a second bolt (23), and a polishing plate (6) is fixedly mounted at the bottom of the lifting rod (19).

5. The device for polishing the oxide layer of the metal workpiece after the heat treatment according to claim 4, wherein: rotary mechanism includes that the second shakes wheel (10), second shakes wheel (10) and deviates from mount (5) one side and installs the rotation handle, sleeve (21) correspond the second and shake wheel (10) one side and seted up the breach, lifter (19) correspond breach one side and seted up the tooth's socket, and the connecting hole has been seted up on mount (5) right side, and the second shakes wheel (10) and connects on mount (5) through the connecting hole, and second shakes wheel (10) and is the helix form corresponding lifter (19) one side, and the two pitch equals, and second shakes wheel (10) and constitutes rack and pinion with lifter (19).

6. The device for grinding the oxide layer of the metal workpiece after the heat treatment according to claim 4, wherein: work piece fixed establishment includes delivery port (7), working pool (8) and magnetic switch (9), working pool (8) are located and polish under board (6), the inside of delivery port (7) intercommunication working pool (8), the side of mount (5) is established in magnetic switch (9).

7. The device for grinding the oxide layer of the metal workpiece after the heat treatment according to claim 4, wherein: the cooling mechanism comprises a plug (3), a water tank (4), a water pipe (11) and a water valve switch (12), the plug (3) blocks a water inlet of the water tank (4), the water pipe (11) is connected to a water outlet of the water tank (4), and the water valve switch (12) is installed at a water outlet end of the water pipe (11).

8. A polishing method of a polishing device for an oxide layer of a metal workpiece after heat treatment is characterized by comprising the following steps:

the first step is as follows: fixing the workpiece in a working pool (8);

the second step is that: the abrasive paper is fixed on a grinding plate (6) at the bottom of a lifting rod (19);

the third step: the cam rod (13) rotates leftwards, so that the second rocking wheel (10) is disengaged from the lifting rod (19), and bottom abrasive paper is placed on the surface of a workpiece to be polished;

the fourth step: the cam rod (13) is rotated rightwards, so that the second rocking wheel (10) is meshed with the lifting rod (19), and the second rocking wheel (10) is rotated, so that the lifting rod (19) has a downward force effect on the workpiece;

the fifth step: the first rocking wheel (10) and the polishing plate (6) are rotated to reciprocate, the oxide layer is polished, and the water valve switch is opened timely to spray water on the surface of the workpiece for cooling.

9. The method of claim 8, wherein the step of polishing the oxide layer of the metal workpiece after the heat treatment comprises the steps of: when the device is used for polishing the surface of a workpiece with lower roughness, abrasive paper at the bottom of the polishing plate (6) is replaced, the second rocking wheel (10) is operated when the polishing plate (6) moves inwards, the lifting rod (19) moves upwards in a proper amount and is not in contact with the surface of the workpiece, the reciprocating motion of the polishing plate is changed into one-way motion, and the polishing work of the surface of the workpiece is carried out.