Metal specimen grinding machine

Abstract

The present invention relates to a metal test piece grinding machine, comprising a base, sandpaper, a test piece holder, a guide block, a slide bar, a motor and a crank-connecting rod mechanism; the sandpaper is fixedly arranged on the upper surface of the base; the test piece holder is located above the sandpaper and is used to clamp the test piece; the guide block is installed on the base and is located above the test piece holder, and the guide block is provided with a guide groove, and the guide groove runs through the upper surface and the lower surface of the guide block; the lower end of the slide bar passes through the guide groove and is connected to the test piece holder, and can move along the guide groove; the motor is vertically installed on the base; the crank-connecting rod mechanism is located between the motor and the slide bar, and is used to link the motor and the slide bar, and the motor drives the slide bar to move back and forth in the guide groove through the crank-connecting rod mechanism. The motor arranged on the base drives the slide bar through the connecting rod mechanism to drive the test piece holder to do reciprocating linear motion, so as to realize the grinding of the test piece on the sandpaper, and the grinding efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of grinding, in particular to a metal test piece grinding machine. Background Art

[0002] When testing the physical and chemical properties of water-based metal cleaners in physical and chemical testing, it is necessary to grind the metal test pieces in accordance with the standard requirements. The texture of the metal test pieces polished by ordinary grinding wheels in the laboratory is not suitable for the physical and chemical properties testing standards of water-based metal cleaners. If it is polished manually, it will be time-consuming and labor-intensive, and it is also easy to cause accidental injuries to the hands. Summary of the invention

[0003] In view of the deficiencies in the prior art, an object of the present invention is to provide a metal test piece grinder with a simple structure and high grinding efficiency.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] The metal specimen grinding machine comprises a base, sandpaper, a specimen holder, a guide block, a slide bar, a motor and a crank-connecting rod mechanism; the sandpaper is fixedly arranged on the upper surface of the base; the specimen holder is located above the sandpaper and is used to clamp the specimen; the guide block is installed on the base and is located above the specimen holder, and the guide block is provided with a guide groove, and the guide groove passes through the upper surface and the lower surface of the guide block; the lower end of the slide bar passes through the guide groove and is connected to the specimen holder and can move along the guide groove; the motor is vertically installed on the base; the crank-connecting rod mechanism is located between the motor and the slide bar and is used to link the motor and the slide bar, and the motor drives the slide bar to move back and forth in the guide groove through the crank-connecting rod mechanism.

[0006] Furthermore, the motor is located on one side of the guide block, the motor is fixed to the base via a Z-shaped mounting plate, and the central axis of the motor is coplanar with the central line of the guide groove on the guide block.

[0007] Furthermore, sliders are provided at both ends of the guide block, and a slideway adapted to the two sliders is vertically provided on the base. The guide block is fixed above the base by two guide studs fixed on the base and two nuts screwed to each guide stud.

[0008] Furthermore, the lower end of the slide rod is threadedly connected to the test piece holder, and the lower end of the slide rod can be screwed in and out of the test piece holder. The lower end of the slide rod is provided with a lock nut, and the lock nut is located on the upper surface of the test piece holder.

[0009] Furthermore, the crank-connecting rod mechanism includes a crank drivingly connected to the motor output shaft and a connecting rod connected to the upper end of the sliding rod, the connecting rod and the crank are connected via a rotating shaft, and the crank is drivingly connected to the motor output shaft and rotates with the motor output shaft.

[0010] Furthermore, the two ends of the connecting rod are respectively provided with a first bearing sleeve and a second bearing sleeve axially parallel to each other, and the two ends of the connecting rod are respectively threadedly connected to the side wall of the first bearing sleeve and the side wall of the second bearing sleeve, the first bearing sleeve is connected to the upper end of the sliding rod by setting a first bearing inside it, and the second bearing sleeve is connected to one end of the rotating shaft by setting a second bearing inside it, and the other end of the rotating shaft is fixedly connected to the crank.

[0011] Furthermore, the test piece holder includes a clamping body, a mounting groove is provided at the bottom of the clamping body, locking screws are provided on both side arms of the mounting groove, and the locking screws are threadedly connected to the side walls of the mounting groove for fixing the test piece in the mounting groove.

[0012] Furthermore, support bolts are threadedly connected to the four corners of the base to support the base.

[0013] The beneficial effects of the present invention compared with the prior art are:

[0014] The metal specimen grinding machine provided by the present invention comprises a base, sandpaper, a specimen clamp, a guide block, a slide bar, a motor and a crank-connecting rod mechanism; the sandpaper is fixedly arranged on the upper surface of the base; the specimen clamp is located above the sandpaper and is used to clamp the specimen; the guide block is installed on the base and is located above the specimen clamp, and the guide block is provided with a guide groove, and the guide groove runs through the upper surface and the lower surface of the guide block; the lower end of the slide bar passes through the guide groove and is connected to the specimen clamp, and can move along the guide groove; the motor is vertically installed on the base; the crank-connecting rod mechanism is located between the motor and the slide bar, and is used to link the motor and the slide bar, and the motor drives the slide bar to move back and forth in the guide groove through the crank-connecting rod mechanism. The motor arranged on the base drives the slide bar through the connecting rod mechanism to drive the specimen clamp to do reciprocating linear motion, so as to realize the grinding of the specimen on the sandpaper, and the grinding efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of an embodiment of the present invention;

[0016] Figure 2 A schematic diagram of a top view of an embodiment of the present invention

[0017] Figure 3 It is a three-dimensional schematic diagram of an embodiment of the present invention.

[0018] In the figure: 1. base, 2. sandpaper, 3. test piece holder, 3.1. mounting groove, 3.2. locking screw, 4. guide block, 4.1. guide groove, 4.2. slider, 5. slide bar, 6. motor, 7. support bolt, 8. slideway, 9. guide stud, 10. nut, 11. test piece, 12. mounting plate, 13. crank, 14. connecting rod, 15. first sleeve, 16. second sleeve, 17. anti-loosening nut. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Example 1

[0021] like Figure 1-3 As shown, the metal specimen grinding machine includes a base 1, sandpaper 2, a specimen holder 3, a guide block 4, a slide rod 5, a crank-connecting rod mechanism and a motor 6.

[0022] Support bolts 7 are threadedly screwed on the four corners of the base 1 for supporting the base 1. When in use, the horizontality of the base 1 can be adjusted by adjusting the support bolts 7; the sandpaper 2 is fixedly arranged on the upper surface of the base 1, and specifically, the sandpaper 2 can be fixed on the upper surface of the base 1 by a fixing clamp; the test piece holder 3 is located above the sandpaper 2 and is used to clamp the test piece 11. The test piece holder 3 includes a clamping body, and a mounting groove 3.1 is arranged at the bottom of the clamping body. The mounting groove 3.1 runs through both ends of the test piece holder 3 body, and the direction of the mounting groove 3.1 is perpendicular to the movement direction of the test piece holder 3; locking screws 3.2 are arranged on the two side arms of the mounting groove 3.1, and the locking screws 3.2 are threadedly screwed with the side walls of the mounting groove 3.1, and the front end of the locking screw 3.2 can be screwed into the mounting groove 3.1 and can be pressed against the side of the test piece 11 to fix the test piece 11. Three locking screws 3.2 are symmetrically arranged on the two side walls of the mounting groove 3.1 in this example. When in use, the test piece 11 is placed in the mounting groove 3.1, and the front ends of the locking screws 3.2 are screwed into the mounting groove 3.1 and abutted against the corresponding two sides of the test piece 11, so that the test piece 11 is fixed in the mounting groove 3.1, and the lower surface (grinding surface) of the test piece 11 exceeds the lower surface of the test piece holder 3, and the lower surface (grinding surface) of the test piece 11 abuts against the sandpaper 2. The setting of the locking screws 3.2 facilitates the disassembly and assembly of the test piece 11, and can stably and reliably fix the test piece 11.

[0023] The guide block 4 is detachably mounted on the base 1 and is located above the test piece holder 3. The guide block 4 is a rectangular parallelepiped. A guide groove 4.1 is provided on the guide block 4. The guide groove 4.1 is arranged along the length direction of the guide block 4. The guide groove 4.1 passes through the upper surface and the lower surface of the guide block 4. The guide groove 4.1 is arranged perpendicular to the upper surface of the base 1. The guide block 4 is provided with sliders 4.2 at both ends along its length direction. The sliders 4.2 are square protrusions. The sliding surfaces on both sides of the sliders 4.2 are parallel to the side surfaces of the guide groove 4.1. A slide 8 adapted to the two sliders 4.2 is vertically arranged on the base 1. The slide body of this embodiment is a rectangular parallelepiped. The slide 8 is a groove provided on one side of the slide body. The groove is adapted to the square protrusion. The lower end of the slide body in this embodiment is fixed to the base 1 by bolts. It should be noted that the slide body can also be welded and fixed to the base 1. The guide block 4 can ensure the parallelism between the slider 4.2 and the upper surface of the base 1 by slidingly cooperating with the slideway 8 vertically arranged on the base 1 through the sliders 4.2 arranged at both ends of the guide block 4. At the same time, the slideway 8 can also impose constraints on the guide block 4 in the horizontal direction.

[0024] The guide block 4 is vertically positioned by two guide studs 9 spaced apart on the base 1 and two fixing nuts 10 screwed to each guide stud 9, wherein the two fixing nuts 10 on each guide stud 9 respectively abut against the upper and lower surfaces of the guide groove 4.1 to clamp the fixing block 4 on the guide stud 9. In this embodiment, the two guide studs 9 respectively pass through the guide groove 4.1 and are screwed to the base 1, and the spacing between the two guide studs 9 is adapted to the length of the guide groove 4.1. During installation, first fix the two slideways 8 vertically on the base 1, then screw the lower ends of the two guide studs 9 between the two slideways 8 onto the base 1, then install a fixing nut 10 on the upper ends of the two guide studs 9, then install the guide block 4 between the two slideways 8, and make the upper ends of the two guide studs 9 in the guide groove 4.1 higher than the upper surface of the guide block, then install another fixing nut 10 on the upper ends of the two guide studs 9, clamp the guide block 4 with the two fixing nuts 10 on the upper end of each guide column 9, and finally adjust the two fixing nuts 10 on each guide stud 9 to ensure that the guide block 4 is at a suitable height position on the slideway 8, and tighten the guide block 4, and finally complete the vertical direction limitation of the guide block 4. It should be noted that the lower ends of the two guide studs 9 can also be welded and fixed on the base 1. It should be noted that the above technical solution can realize the rapid disassembly and installation of the guide block 4.

[0025] The lower end of the slide bar 5 passes through the guide groove 4.1 and is connected to the test piece holder 3, and can move along the guide groove 4.1. The lower end of the slide bar 5 in this example is screwed with the test piece holder 3. Specifically, the lower end of the slide bar 5 is provided with an external thread, and a threaded hole matching the external thread is provided at the center of the upper surface of the test piece holder 3. The lower end of the slide bar 5 can be screwed in and out of the test piece holder 3 through a threaded connection. When in use, the distance between the upper end surface of the slide bar 5 and the upper surface of the test piece holder 3 can be adjusted by screwing the slide bar 5, so as to achieve vertical micro-feeding of the test piece 11. A locking nut 17 is provided on the external thread of the lower end of the slide bar 5. The locking nut 17 is located on the upper surface of the test piece holder 3 and is used to prevent the external thread of the lower end of the slide bar 5 from loosening when the threaded hole on the test piece holder 3 is threadedly matched. When in use, the locking nut 17 is screwed on the external thread of the lower end of the slide bar 5, and its lower end surface is pressed against the upper surface of the test piece holder 3.

[0026] The motor 6 is vertically fixed on the base 1 to provide a rotational driving force. Specifically, the motor 6 is located on one side of the guide block. The motor 6 is fixed to the base through a Z-shaped mounting plate. The bottom surface of the Z-shaped mounting plate is fixed to the base 1 by bolts. The flange at the front end of the motor 6 is fixed to the top surface of the Z-shaped mounting plate by bolts. The central axis of the motor 6 is coplanar with the center line of the guide groove 4.1 on the guide block 4.

[0027] The crank-connecting rod mechanism is located between the motor 6 and the slide bar 5, and is used to link the motor 6 and the slide bar 5. The motor 6 drives the slide bar 5 to reciprocate in the guide groove 4.1 through the crank-connecting rod mechanism. Specifically, the crank-connecting rod mechanism includes a crank 13 drivingly connected to the output shaft of the motor 6 and a connecting rod 14 connected to the upper end of the slide bar 5. The connecting rod 14 is connected to the crank 13 through a rotating shaft, and the crank 13 is drivingly connected to the output shaft of the motor 6. As the output shaft of the motor 6 rotates, the two ends of the connecting rod 14 are respectively provided with a first bearing sleeve 15 and a second bearing sleeve 15 which are axially parallel to each other. Sleeve 16, specifically, both ends of the connecting rod 14 are provided with external threads, and the side walls of the first bearing sleeve 15 and the second bearing sleeve 16 are respectively provided with threaded holes matching the external threads at both ends of the connecting rod 14, and the two ends of the connecting rod 14 are respectively threadedly connected with the side walls of the first bearing sleeve 15 and the side walls of the second bearing sleeve 16, and the first bearing sleeve 15 is rotatably connected to the upper end of the sliding rod 5 by setting a first bearing inside it, and the second bearing sleeve 16 is rotatably connected to one end of the rotating shaft by setting a second bearing inside it, and the other end of the rotating shaft is fixedly connected to the crank 13.

[0028] When in use, first fix the sandpaper 2 on the base 1, put the test piece 11 into the mounting groove 3.1 of the test piece holder 3, the upper surface of the test piece 11 is attached to the top surface of the mounting groove 3.1, and the locking screws 3.2 are screwed to press against both sides of the test piece 11, and the test piece 11 is fixed in the mounting groove 3.1. The lower surface of the test piece 11 is attached to the sandpaper 2, and the slide bar 5 is screwed to shorten the length of the front end of the slide bar 5 screwed into the test piece holder 3, and a certain downward pressure is applied to the test piece holder 3, that is, the vertical micro- Feed, tighten the anti-loosening nut 17, start the motor 6 to rotate, the motor 6 drives the crank connecting rod mechanism to pull the slide bar 5 to reciprocate in the guide groove 4.1, the slide bar 5 drives the test piece 11 on the test piece holder 3 to reciprocate on the sandpaper 2 for grinding. After grinding, release the locking nut 17, screw the slide bar 5, increase the length of the front end of the slide bar 5 screwed into the test piece holder 3, cancel the downward pressure of the slide bar 5 on the test piece holder 3, or make the test piece holder 3 slightly rise vertically, loosen the locking screw 3.2, take out the test piece 11, and the grinding is completed.

[0029] The beneficial effects of this embodiment compared with the prior art are:

[0030] In this embodiment, the motor 6 disposed on the base 1 drives the slide bar 5 through the connecting rod 14 mechanism to drive the test piece holder 3 to perform reciprocating linear motion, thereby achieving grinding of the test piece 11 on the sandpaper 2 with high grinding efficiency.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. The metal specimen grinding machine is used to test the physical and chemical properties of water-based metal cleaning agents. It is characterized by: It includes a base, sandpaper, a test piece holder, a guide block, a slide bar, a motor and a crank-connecting rod mechanism; the sandpaper is fixedly arranged on the upper surface of the base; the test piece holder is located above the sandpaper and is used to clamp the test piece; the guide block is installed on the base and is located above the test piece holder, and the guide block is provided with a guide groove, and the guide groove passes through the upper surface and the lower surface of the guide block; the lower end of the slide bar passes through the guide groove and is connected to the test piece holder, and can move along the guide groove; the motor is vertically installed on the base; the crank-connecting rod mechanism is located between the motor and the slide bar and is used to link the motor and the slide bar, and the motor drives the slide bar to reciprocate in the guide groove through the crank-connecting rod mechanism; Slide blocks are arranged at both ends of the guide block, and slideways adapted to the two slide blocks are vertically arranged on the base. The guide block is fixed above the base through two guide studs fixed on the base and two nuts screwed to each guide stud; The lower end of the slide rod is threadedly connected to the test piece holder, and the lower end of the slide rod can be screwed in and out of the test piece holder. The lower end of the slide rod is provided with a locking nut, and the locking nut is located on the upper surface of the test piece holder; The test piece holder comprises a clamping body, a mounting groove is arranged at the bottom of the clamping body, locking screws are arranged on the two side arms of the mounting groove, and the locking screws are screwed with the side wall of the mounting groove to fix the test piece in the mounting groove; When in use, place the test piece into the mounting slot of the test piece holder, and fix the test piece in the mounting slot by screwing the locking screws against both sides of the test piece. The lower surface of the test piece is attached to the sandpaper, and the slide rod is screwed to shorten the length of the front end of the slide rod screwed into the test piece holder, giving the test piece holder a certain downward pressure, that is, vertical micro-feeding is achieved by adjusting the distance between the upper end surface of the slide rod and the test piece holder.

2. The metal specimen grinding machine according to claim 1, characterized in that: The motor is located on one side of the guide block, and the motor is fixed to the base through a Z-shaped mounting plate. The central axis of the motor is coplanar with the central line of the guide groove on the guide block.

3. The metal specimen grinding machine according to claim 1, characterized in that: The crank-connecting rod mechanism comprises a crank drivingly connected to the motor output shaft and a connecting rod connected to the upper end of the slide bar. The connecting rod is connected to the crank via a rotating shaft. The crank is drivingly connected to the motor output shaft and rotates with the motor output shaft.

4. The metal specimen grinding machine according to claim 3, characterized in that: The two ends of the connecting rod are respectively provided with a first bearing sleeve and a second bearing sleeve axially parallel to each other. The two ends of the connecting rod are respectively threadedly connected to the side walls of the first bearing sleeve and the side walls of the second bearing sleeve. The first bearing sleeve is connected to the upper end of the sliding rod by setting a first bearing inside it, and the second bearing sleeve is connected to one end of the rotating shaft by setting a second bearing inside it. The other end of the rotating shaft is fixedly connected to the crank.

5. The metal specimen grinding machine according to any one of claims 1 to 4, characterized in that: Support bolts are threadedly connected to the four corners of the base to support the base.

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