CN210499748U

CN210499748U - Automatic grinding and polishing device for multifunctional metallographic experimental part

Info

Publication number: CN210499748U
Application number: CN201920645408.2U
Authority: CN
Inventors: 舒林森; 林冉; 白海清
Original assignee: Shaanxi University of Technology
Current assignee: Shaanxi University of Technology
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-05-12
Anticipated expiration: 2029-04-30

Abstract

The utility model provides an automatic grinding and burnishing device of multi-functional metallography experimental part. The device part comprises a clamp A, a bottom plate, a slide bar, a lead screw, a clamp B, a mounting flat plate and a stepping motor. This automatic grinder can effectively guarantee the grinding quality of metallography experimental part, can satisfy the test piece grinding of not unidimensional thickness or grind multiple test piece simultaneously moreover, improves work efficiency, reduces working strength, reduces the influence of human factor to grinding quality. The device has the characteristics of no need of inlaying and water spraying devices, and has the characteristics of environmental protection when grinding samples.

Description

Automatic grinding and polishing device for multifunctional metallographic experimental part

Technical Field

The utility model belongs to the technical field of mechanical device, a automatic grinder of metallography experimental part, assembly process and application method are related to.

Background

In production, microscopic information such as the evolution rule of the metallographic structure of the material, the size of crystal grains and the like has important significance for mastering the quality and the reliability of the material. The study on the microscopic morphology of the quantity, size, distribution and form of the metallographic structure of the material requires grinding of a plurality of groups of metallographic experimental pieces. At present, metallographic grinding mainly comprises two modes of manual grinding and machine grinding. The manual grinding has the advantages that due to the fact that the workload of operation is large, only one test piece can be ground each time, efficiency is low, grinding quality depends on human factors, the grinding quality of each metallographic experimental piece cannot be guaranteed to be uniform, and accordingly observation effect of metallographic structures is affected; the purchase expense of current machine grinding equipment is high, and the sheet metal sample grinds still needs complete sets auxiliary assembly such as inlaying machine, cutting machine, still must use in the test piece preparation to inlay the powder, has consumptive material consumption, and the environmental protection is not enough, and the test piece size is slightly bigger, then hardly inlays, and application scope is limited. Therefore, the automatic grinding device for the metallographic experimental part, which has the advantages of good adaptability, high efficiency, strong stability, no need of embedding and environmental protection, is urgently needed to be developed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic grinding and burnishing device of metallography experimental part, its characterized in that includes anchor clamps A, bottom plate, slide bar, lead screw, anchor clamps B, installation flat board and step motor.

And the upper surface of the bottom plate is fixedly provided with a stepping motor, two bearing seats and four vertical plates. The four vertical plates support two parallel slide bars. A screw rod is arranged between the two slide rods. And bearings supported by the bearing seats are arranged at two ends of the lead screw. One end of the lead screw penetrates through the inner ring of the bearing and then is connected with the motor. Sand paper is laid on the upper surface of the bottom plate.

The mounting plate is supported above the base plate by two slide bars. And a screw nut of the screw is fixedly connected to the lower surface of the mounting plate. The lower surface of the mounting flat plate is also provided with two sliding blocks matched with the sliding rod.

The mounting plate has a mounting hole penetrating its upper and lower surfaces. The mounting hole is used for mounting the clamp A.

The fixture A comprises an internal thread shaft sleeve, an external thread shaft sleeve, a hollow optical axis, a spiral spring and a movable chuck. The external thread shaft sleeve and the internal thread shaft sleeve are hollow cylinders with upper and lower openings. The lower end opening of the internal thread shaft sleeve is screwed into the upper end of the external thread shaft sleeve through threads. The external thread shaft sleeve is fixed with the installation flat plate. The hollow optical axis is a hollow cylinder with an upper opening and a lower opening. The upper end of the hollow optical axis extends into the lower end opening of the external thread shaft sleeve and is connected with the circular upper cover plate. The coil spring is sleeved on the hollow optical axis, the lower end of the coil spring is in contact with the upper end of the external thread shaft sleeve, and the upper end of the coil spring is in contact with the upper cover plate. The upper cover plate is limited in the inner thread shaft sleeve. The upper end of the movable chuck is connected with the lower end of the hollow optical axis. The lower end of the movable chuck is provided with a strip-shaped groove, and groove walls are arranged on two sides of the strip-shaped groove. The side wall of the movable chuck is provided with a threaded hole I which penetrates through one groove wall of the strip-shaped groove. And a clamping screw is screwed into the threaded hole I.

And one side of the mounting flat plate is provided with the clamp B.

The clamp B comprises a movable clamping plate I, a clamping screw, a movable clamping plate II and a supporting base. The support base is an L-shaped plate with an inverted L-shaped section, one plate surface of the support base is connected to the upper surface of the installation flat plate, and the other plate surface of the support base is connected with a movable clamping plate II. The movable clamping plate I is connected to the plate surface on one side of the movable clamping plate II back to the mounting plate through a clamping screw.

Furthermore, the upper cover plate is connected with the upper end of the hollow optical axis through a screw I.

The upper end of the internal thread shaft sleeve is connected with a plurality of limiting blocks through screws II. The limiting block is blocked above the upper cover plate.

Furthermore, the upper end of the movable chuck is a boss embedded into the lower end of the hollow optical axis. Four hemispherical grooves are uniformly distributed on the side wall of the boss. The side wall of the hollow optical axis is provided with a threaded through hole. And a ball plunger is inserted into the threaded through hole. One end of the ball plunger enters the hemispherical groove, so that the movable chuck and the hollow optical shaft are connected together.

Further, the outer side wall of the hollow optical axis is provided with a strip-shaped guide groove perpendicular to the horizontal plane. The lower end of the bottom plate is connected with a guide rod. One end of the guide rod is arranged in the strip-shaped guide groove.

Further, the upper surface of the bottom plate is provided with at least two abrasive paper clamps.

Furthermore, a horizontal plate of the supporting base is provided with a strip-shaped groove I. And after the locking bolt penetrates through the through hole and the strip-shaped groove I of the mounting plate, the nut is screwed in to lock the support base and the mounting plate.

And the vertical plate of the support base is provided with a strip-shaped groove II. After the locking screw is inserted into the strip-shaped groove II, the locking screw is screwed into a threaded hole in the movable clamping plate II to lock the movable clamping plate II and support the base.

Furthermore, a water spraying device is fixed on the installation flat plate. And the two water spray pipes of the water spray device are respectively positioned on the side surfaces of the clamp A and the clamp B.

The technical effects of the utility model are undoubted:

1. the automatic grinding device can effectively ensure the grinding quality of a metallographic experimental piece, and can meet the requirements of grinding test pieces with different sizes and thicknesses or grinding multiple test pieces simultaneously, thereby improving the working efficiency, reducing the working strength and reducing the influence of human factors on the grinding quality;

2. all parts of the assembly structure design of the grinding device are designed on the basis of modularization, parts in all the devices have good interchangeability, adjustability and low cost, and the whole grinding device is made of high-strength stainless steel materials, so that the strength, the rigidity and the stability of the grinding device can be ensured, and the service life of the grinding device is greatly prolonged;

3. the grinding device is provided with the water spraying device, PM2.5 dust can be effectively reduced in the grinding or polishing process, the working environment is green and environment-friendly, and the utilization efficiency of the waterproof abrasive paper is improved;

4. in the aspect of a grinding process, the traditional grinding thought in a single direction is changed, the circumferential position of a metallographic experimental piece can be adjusted in an indexing manner, and the grinding process of textures in different directions can be realized by clamping once;

5. for the grinding of small-size or thin plate test pieces, the grinding is directly carried out without inlaying and reprocessing, the inlaying powder material and the processing time are saved, and the environment-friendly effect of green material saving is achieved.

Drawings

FIG. 1 is a schematic view of the overall structure of the apparatus;

FIG. 2 is a schematic view of the overall structure of the apparatus;

fig. 3 is a schematic view of an assembly structure of the clamp a of the present invention;

FIG. 4 is a schematic view of the clamping of the metallographic specimen in the fixture A;

fig. 5 is a schematic view of the assembly structure of the clamp B.

In the figure: the clamp comprises a clamp A (1), a clamping screw (101), a hollow optical axis (102), a strip-shaped guide groove (1021), a through hole (1022), an external thread shaft sleeve (103), an upper cover plate (104), a screw I (1041), a spiral spring (105), an internal thread shaft sleeve (106), a ball plunger (107), a movable chuck (108), a hemispherical groove (1081), a strip-shaped groove (1082), a threaded hole I (1083), a boss (1084), a limiting block (109), a screw II (1091), a bottom plate (2), a sand paper clamp (201), a vertical plate (202), a bearing seat (203), a sliding rod (3), a lead screw (4), a screw rod (401), a lead screw nut (402), a clamp B (5), a movable clamp plate I (501), a clamping screw (502), a movable clamp plate II (503), a threaded hole II (5031), a supporting base (504), a strip-shaped groove I (5041), a, The device comprises a strip-shaped groove II (5061), a water spraying device (6), an installation flat plate (7), a sliding block (701), an installation hole (702), a travel switch (8), a coupler (9), a stepping motor (10), a metallographic experimental piece A (13) and a metallographic experimental piece B (14).

Detailed Description

The present invention will be further described with reference to the following examples, but it should not be construed that the scope of the present invention is limited to the following examples. Various substitutions and modifications can be made without departing from the technical spirit of the invention and according to the common technical knowledge and conventional means in the field, and all shall be included in the scope of the invention.

Example 1:

an automatic grinding and polishing device for metallographic experimental pieces is characterized by comprising a clamp A1, a bottom plate 2, a sliding rod 3, a lead screw 4, a clamp B5, a mounting flat plate 7 and a stepping motor 10.

The upper surface of the bottom plate 2 is fixedly provided with a stepping motor 10, two bearing seats 203 and four vertical plates 202. The four vertical plates 202 support two parallel slide bars 3. A screw rod 4 is arranged between the two slide bars 3. Both ends of the lead screw 4 are provided with bearings supported by the bearing seats 203. One end of the screw rod 4 penetrates through the inner ring of the bearing and then is connected with a rotating shaft of the stepping motor 10 through a coupler. Sand paper is laid on the upper surface of the bottom plate 2.

The mounting plate 7 is supported above the base plate 2 by two slide bars 3. The lead screw nut 402 of the lead screw 4 is fixedly connected to the lower surface of the mounting plate 7. The lower surface of the mounting plate 7 also has two sliding blocks 701 cooperating with the sliding rod 3.

The mounting plate 7 has a mounting hole 702 penetrating its upper and lower surfaces. The mounting hole 702 is used to mount a clamp a 1.

The clamp A1 comprises an internal thread shaft sleeve 106, an external thread shaft sleeve 103, a hollow optical shaft 102, a spiral spring 105 and a movable clamping head 108. The external thread shaft sleeve 103 and the internal thread shaft sleeve 106 are hollow cylinders with upper and lower openings. The lower end opening of the internal thread shaft sleeve 106 is screwed into the upper end of the external thread shaft sleeve 103 through threads. The external thread shaft sleeve 103 is fixed with the installation flat plate 7 through bolts. The hollow optical axis 102 is a hollow cylinder with an upper opening and a lower opening. The upper end of the hollow optical axis 102 extends into the lower end opening of the external thread shaft sleeve 103 and then is connected with the circular upper cover plate 104 through bolts. The coil spring 105 is sleeved on the hollow optical axis 102, and the lower end of the coil spring is in contact with the upper end of the external thread shaft sleeve 103, and the upper end of the coil spring is in contact with the upper cover plate 104. The upper cover plate 104 is captured within an internally threaded bushing 106. The upper end of the movable chuck 108 is connected to the lower end of the hollow optical axis 102. The lower end of the movable chuck 108 is provided with a strip-shaped groove 1082, and groove walls are arranged on two sides of the strip-shaped groove 1082. The side wall of the movable clamping head 108 is provided with a threaded hole I1083 penetrating to one groove wall of the strip-shaped groove 1082. The clamping screw 101 is screwed into the threaded hole I1083. When the clamping screw 101 is used, after the clamping screw 101 is screwed into the strip-shaped groove 1082, the clamping screw pushes against the blocky or flaky metallographic experimental part A13 attached to the other groove wall of the strip-shaped groove 1082.

The clamp B5 is installed on one side of the installation flat plate 7.

The clamp B5 comprises a movable clamp plate I501, a clamping screw 502, a movable clamp plate II503 and a support base 504. The support base 504 is an L-shaped plate with an inverted L-shaped cross section, one plate surface of which is connected to the upper surface of the installation plate 7, and the other plate surface of which is connected to the movable clamp plate II 503. The movable clamping plate I501 is connected to the side plate surface of the movable clamping plate II503 opposite to the installation flat plate 7 through a clamping screw 502. In use, the metallographic experimental piece B14 is clamped between the movable clamping plate I501 and the movable clamping plate II 503.

Example 2:

the main structure of this embodiment is the same as that of embodiment 1, and further, the upper cover plate 104 is connected to the upper end of the hollow optical axis 102 through a screw I1041.

The upper end of the internal thread shaft sleeve 106 is connected with two limiting blocks 109 through screws II 1091. The stopper 109 is stopped above the upper cover plate 104.

The upper end of the movable clamping head 108 is embedded into a boss 1084 at the lower end of the hollow optical axis 102. Four hemispherical grooves 1081 are uniformly distributed on the side wall of the boss 1084. The side wall of the hollow optic axis 102 has a threaded through hole 1022. The ball plunger 107 is inserted into the threaded through hole 1022. One end of the ball plunger 107 enters the hemispherical recess 1081, thereby coupling the movable collet 108 and the hollow optic axis 102 together.

The outer side wall of the hollow optical axis 102 is provided with a strip-shaped guide groove 1021 perpendicular to the horizontal plane. And a guide key is arranged in the mounting hole of the mounting flat plate 7. When the hollow optical axis 102 moves up and down, the guide key slides in the strip-shaped guide groove 1021, so that the guide is realized.

The upper surface of the bottom plate 2 is provided with two sandpaper clips 201.

The horizontal plate of the supporting base 504 is provided with a strip-shaped groove I5041. After the locking bolt 505 penetrates through the through hole on the mounting plate 7 and the strip-shaped groove I5041, a nut is screwed in to lock the support base 504 and the mounting plate 7.

The vertical plate of the support base 504 is provided with a strip-shaped groove II 5061. After the locking screw 506 is inserted into the strip-shaped groove II5061, the locking screw is screwed into the threaded hole on the movable clamping plate II503 to lock the movable clamping plate II503 and the support base 504.

And a water spraying device 6 is fixed on the installation flat plate 7. The two water spray pipes of the water spray device 6 are respectively positioned at the side of the clamp A1 and the side of the clamp B5. Adopt the metallographic phase experiment spare environmental protection of above-mentioned device to grind: the water spraying device automatically sprays water onto the test piece through the pinhole orifice of the conveying pipe under the action of gravity in the grinding process. Preparing a metallographic experimental piece A13 and/or a metallographic experimental piece B14; the metallographic test piece A13 is a thin slice sample or a square sample. The metallographic test piece B14 is a sheet-shaped test piece. Firstly, fixing 300# sandpaper on the upper surface of the base 2, and ensuring that the sandpaper is flat and has no wrinkles. And 3, installing a metallographic experimental part. Place metallography experimental part A, change its flexible volume through rotatory clamping screw 101, realize its clamping process, rotatory external screw thread axle sleeve makes metallography experimental part A and abrasive paper closely laminate. Place metallographic specimen B, change its flexible volume through rotatory clamping screw 502, realize its clamping process, adjust movable splint II, make metallographic specimen B and abrasive paper closely laminate. And 4, pressing a start button, and realizing forward and reverse rotation of the stepping motor under the control of the driver, wherein the motor drives the screw rod to enable the upper flat plate to reciprocate. Two fixed travel switches 8 may be provided on the upper surface of the base plate 2. The two travel switches 8 are respectively located on two sides of the screw nut 402. Whenever the spindle nut 402 touches the travel switch 8, a reverse signal is given to the stepper motor. The movable chuck can rotate along the inner wall of the optical axis, and hemispherical grooves are formed on the outer surface of the movable chuck at intervals of 90 degrees, so that the indexing positioning effect can be quickly realized. Observing the grinding surface, sequentially replacing different abrasive papers (600#, 800#, 1000#, 1300#, 1600#, 2000#), and repeating the steps 4 ] and 5 ] until the grinding requirement is met. When the sand paper is replaced, the machine is stopped, the limiting block 109 above the internal thread shaft sleeve 106 is rotated, and the movable chuck 108 is lifted by the spring 105 to a certain height. And 7, after the grinding meets the requirement, replacing the polishing cloth according to the method 6, repeating the

processes

4 and 5 until the end face of the test piece meets the metallographic polishing requirement, and unloading the test piece for subsequent metallographic corrosion and observation.

Claims

1. An automatic grinding and polishing device for metallographic experimental pieces is characterized by comprising a clamp A (1), a bottom plate (2), a sliding rod (3), a lead screw (4), a clamp B (5), a mounting flat plate (7) and a stepping motor (10);

the upper surface of the bottom plate (2) is fixedly provided with a stepping motor (10), two bearing seats (203) and four vertical plates (202); the four vertical plates (202) support two parallel sliding rods (3); a screw rod (4) is arranged between the two slide bars (3); bearings supported by the bearing seats (203) are mounted at two ends of the lead screw (4); one end of the lead screw (4) penetrates through the inner ring of the bearing and then is connected with a stepping motor (10); sand paper is laid on the upper surface of the bottom plate (2);

the mounting flat plate (7) is supported above the bottom plate (2) by the two slide bars (3); a screw nut (402) of the screw (4) is fixedly connected to the lower surface of the mounting flat plate (7); the lower surface of the mounting flat plate (7) is also provided with two sliding blocks (701) matched with the sliding rod (3);

the mounting plate (7) is provided with a mounting hole (702) penetrating through the upper surface and the lower surface of the mounting plate; the mounting hole (702) is used for mounting a clamp A (1);

the clamp A (1) comprises an internal thread shaft sleeve (106), an external thread shaft sleeve (103), a hollow optical axis (102), a spiral spring (105) and a movable chuck (108); the external thread shaft sleeve (103) and the internal thread shaft sleeve (106) are hollow cylinders with openings at the upper part and the lower part; the lower end opening of the internal thread shaft sleeve (106) is screwed into the upper end of the external thread shaft sleeve (103) through threads; the external thread shaft sleeve (103) is fixed with the mounting flat plate (7); the hollow optical axis (102) is a hollow cylinder with an upper opening and a lower opening; the upper end of the hollow optical axis (102) extends into the lower end opening of the external thread shaft sleeve (103) and is connected with a circular upper cover plate (104); the lower end of the spiral spring (105) is in contact with the upper end of the external thread shaft sleeve (103), and the upper end of the spiral spring is in contact with the upper cover plate (104); the upper cover plate (104) is limited in the inner thread shaft sleeve (106); the upper end of the movable chuck (108) is connected with the lower end of the hollow optical axis (102); the lower end of the movable chuck (108) is provided with a strip-shaped groove (1082), and groove walls are arranged on two sides of the strip-shaped groove (1082); a threaded hole I (1083) penetrating through the side wall of one side of the movable clamping head (108); a clamping screw (101) is screwed into the threaded hole I (1083);

the clamp B (5) is arranged on one side of the mounting flat plate (7);

the clamp B (5) comprises a movable clamp plate I (501), a clamping screw (502), a movable clamp plate II (503) and a supporting base (504); the supporting base (504) is an L-shaped plate with an inverted L-shaped section, one plate surface of the supporting base is connected to the upper surface of the installation flat plate (7), and the other plate surface of the supporting base is connected with a movable clamping plate II (503); the movable clamping plate I (501) is connected to one side plate surface of the movable clamping plate II (503) back to the installation flat plate (7) through a clamping screw (502).

2. The automatic grinding and polishing device for the metallographic experimental part according to claim 1, wherein: the upper cover plate (104) is connected with the upper end of the hollow optical axis (102) through a screw I (1041);

the upper end of the internal thread shaft sleeve (106) is connected with a plurality of limiting blocks (109) through screws II (1091); the limiting block (109) is blocked above the upper cover plate (104).

3. The automatic grinding and polishing device for the metallographic experimental part according to claim 1, wherein: the upper end of the movable chuck (108) is embedded into a boss (1084) at the lower end of the hollow optical axis (102); four hemispherical grooves (1081) are uniformly distributed on the side wall of the boss (1084); the side wall of the hollow optical axis (102) is provided with a threaded through hole (1022); a ball plunger (107) is inserted into the threaded through hole (1022); one end of the ball plunger (107) enters the hemispherical groove (1081), so that the movable chuck (108) and the hollow optical axis (102) are connected together.

4. The automatic grinding and polishing device for the metallographic experimental part according to claim 1, wherein: the outer side wall of the hollow optical axis (102) is provided with a strip-shaped guide groove (1021) vertical to the horizontal plane; the lower end of the bottom plate (2) is connected with a guide rod; one end of the guide rod is arranged in the strip-shaped guide groove (1021).

5. The automatic grinding and polishing device for the metallographic experimental part according to claim 1, wherein: the upper surface of the bottom plate (2) is provided with at least two abrasive paper clamps (201).

6. The automatic grinding and polishing device for the metallographic experimental part according to claim 1, wherein: a horizontal plate of the supporting base (504) is provided with a strip-shaped groove I (5041); after the locking bolt (505) penetrates through the through hole and the strip-shaped groove I (5041) of the mounting flat plate (7), a nut is screwed in to lock the support base (504) and the mounting flat plate (7);

the vertical plate of the support base (504) is provided with a strip-shaped groove II (5061); after the locking screw (506) is inserted into the strip-shaped groove II (5061), the locking screw is screwed into a threaded hole on the movable clamping plate II (503) so as to lock the movable clamping plate II (503) and the supporting base (504).

7. The automatic grinding and polishing device for the metallographic experimental part according to claim 1, wherein: a water spraying device (6) is fixed on the installation flat plate (7); and the two water spray pipes of the water spray device (6) are respectively positioned on the side surfaces of the clamp A (1) and the clamp B (5).