CN111958420B - Rock detection test piece end surface grinding device - Google Patents

Rock detection test piece end surface grinding device Download PDF

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Publication number
CN111958420B
CN111958420B CN202010896690.9A CN202010896690A CN111958420B CN 111958420 B CN111958420 B CN 111958420B CN 202010896690 A CN202010896690 A CN 202010896690A CN 111958420 B CN111958420 B CN 111958420B
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China
Prior art keywords
rod
test piece
guide rod
sleeve
shell
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CN202010896690.9A
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Chinese (zh)
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CN111958420A (en
Inventor
郑超
郭璐璐
罗从双
刘帅
葛炳炜
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Dragon Totem Technology Hefei Co ltd
Hefei Jiuzhou Longteng Scientific And Technological Achievement Transformation Co ltd
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Henan University of Urban Construction
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Priority to CN202010896690.9A priority Critical patent/CN111958420B/en
Publication of CN111958420A publication Critical patent/CN111958420A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/004—Machines or devices using grinding or polishing belts; Accessories therefor using abrasive rolled strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/18—Accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/08—Dust extraction equipment on grinding or polishing machines specially designed for belt grinding machines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • G01N2001/2866—Grinding or homogeneising

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention relates to a rock detection test piece end surface polishing device, which effectively solves the problems of easy hand injury and large dust during polishing; the technical scheme for solving the problem is that the device comprises a shell, wherein a rotary table is arranged in the shell, a vertical rod is arranged on the rotary table, a transverse push rod penetrates through the vertical rod, arc-shaped plates are fixed at the inner ends of the push rods, and the positions of the push rods can be fixed; the upper end of the shell is provided with a sleeve which rotates in the same direction as the rotary table, a guide rod capable of moving up and down is arranged in the sleeve, and the sleeve rotates to drive the guide rod to rotate; the lower end of the guide rod is provided with a polishing component; the grinding assembly comprises a bottom plate, side plates are arranged on the front side and the rear side of the bottom plate, a driving roller and a rolled shaft are arranged between the front side plate and the rear side plate, a gear shaft is connected between the two side plates, and racks meshed with gears on the gear shaft are arranged on the side surfaces of the sleeves; the guide rod can move upwards to drive the driving roller to rotate through the gear shaft, so that the abrasive paper is wound on the driving roller; the invention can realize grinding and sand paper replacement by pressing and can collect generated dust.

Description

Rock detection test piece end surface grinding device
Technical Field
The invention relates to the field of rock detection, in particular to a rock detection test piece end face grinding device.
Background
The uniaxial compressive strength of the stone is measured in a water-saturated state of the stone, and is used for strength classification and lithology description of the rock. The general rock test piece is a 50mm cube or a cylinder with the diameter and the height of 50 mm; in order to ensure that the rock stress is stable, the upper end surface and the lower end surface of the test piece are parallel and ground flat, and the flatness tolerance of the end surface of the test piece is less than 0.05 mm. After the test piece is cut by the stone cutter, polishing is needed due to insufficient flatness. The traditional subassembly 8 of polishing directly polishes behind the fixed test piece generally, has mainly had following problem: 1. the parallelism of the two ends is easy to deviate during polishing; 2. the sandpaper 805 generally needs to be pressed on a workpiece by hands, so that hands are easy to hurt; 3. larger dust is generated during polishing; 4. the grinding speed is low, and the efficiency is low; there is a need for a new device to solve the above problems.
Disclosure of Invention
Aiming at the situation, the invention aims to solve the problems in the prior art, and provides a rock detection test piece end surface grinding device which can effectively solve the problems that hands are easy to hurt during grinding, dust is large and the like.
The technical scheme for solving the problem is that the device comprises a shell, wherein a rotary table is arranged at the bottom of the shell, a left vertical rod and a right vertical rod are arranged on the rotary table, a transverse push rod penetrates through each vertical rod, an arc-shaped plate is fixed at the inner end of each push rod, and the positions of the push rods can be fixed; the upper end of the shell is provided with a sleeve which rotates in the same direction as the rotary table, a guide rod capable of moving up and down is arranged in the sleeve, and the sleeve rotates to drive the guide rod to rotate; the lower end of the guide rod is provided with a polishing component;
the grinding assembly comprises a bottom plate fixed on the lower end face of the guide rod, side plates are fixed on the front side and the rear side of the bottom plate, a driven roller positioned on the right side and a driving roller positioned on the left side are installed between the front side plate and the rear side plate, abrasive paper is wound on a driven roller shaft, the particle surface of the abrasive paper faces downwards, and the free end of the abrasive paper is wound on a main roller shaft after passing through the lower end face of the bottom plate; a gear shaft is connected between the front side plate and the rear side plate, and a rack meshed with a gear on the gear shaft is arranged on the side surface of the sleeve; the guide rod can move upwards to drive the driving roller to rotate through the gear shaft, so that the abrasive paper is wound on the driving roller.
The invention can realize the grinding and the quick replacement of the abrasive paper by pressing and can collect the generated dust at the same time.
Drawings
FIG. 1 is a front view of the present invention.
Fig. 2 is a left side view of the present invention.
FIG. 3 is a left side sectional view of the present invention.
FIG. 4 is a front sectional view of the optical disk.
FIG. 5 is a front sectional view II.
Figure 6 is a perspective view of the sanding assembly.
FIG. 7 is a top sectional view of the dust catcher.
Fig. 8 is a top view of the duster.
Fig. 9 is a partially enlarged view of a portion a in fig. 1.
Fig. 10 is a partially enlarged view of B in fig. 1.
Detailed Description
The following describes in further detail embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1 to 10, the invention comprises a shell 1, a rotary table 2 is arranged at the bottom of the shell 1, a left vertical rod 3 and a right vertical rod 3 are arranged on the rotary table 2, a transverse push rod 4 penetrates through each vertical rod 3, an arc-shaped plate 5 is fixed at the inner end of each push rod 4, and the position of each push rod 4 can be fixed; the upper end of the shell 1 is provided with a sleeve 6 which rotates reversely in the same direction as the rotary table 2, a guide rod 7 which can move up and down is arranged in the sleeve 6, and the sleeve 6 rotates to drive the guide rod 7 to rotate; the lower end of the guide rod 7 is provided with a polishing component 8;
the grinding assembly 8 comprises a bottom plate 801 fixed on the lower end face of the guide rod 7, side plates 802 are fixed on the front side and the rear side of the bottom plate 801, a driven roller 804 on the right side and a driving roller 803 on the left side are installed between the front side plate 802 and the rear side plate 802, sand paper 805 is wound on a driven roller shaft, the particle surface of the sand paper 805 faces downwards, and the free end of the sand paper 805 is wound on a main roller shaft after passing through the lower end face of the bottom plate 801; a gear shaft 806 is connected between the front side plate 802 and the rear side plate 802, and a rack 807 meshed with a gear on the gear shaft 806 is arranged on the side surface of the sleeve 6; the guide rod 7 moves upwards to drive the driving roller 803 to rotate through the gear shaft 806, so that the sand paper 805 is wound on the driving roller 803;
in order to realize the recovery of dust, the casing 1 on articulated have about can swing and to the swing arm 9 that the centre draws close, the tip of every swing arm 9 all is fixed with semi-annular box 10, the internally mounted of box 10 has a plurality of friction pulley 11, seted up passageway 12 on the side of casing 1, the outer end of passageway 12 is connected with dust bag 13, the internally mounted of passageway 12 has impeller 14, the cover is equipped with the belt pulley on impeller 14's the main shaft, the coaxial belt pulley that is fixed with on the friction pulley 11, the belt pulley on the friction pulley 11 and the belt pulley on the impeller 14 realize the corotation through belt and reversing wheel.
In order to avoid the influence of the box body 10 on grinding, an upright rod 15 capable of moving up and down is installed on the shell 1, a horizontal pressing plate 16 is installed at the upper end of the upright rod 15, and the pressing plate 16 is rotatably connected with the upper end of the guide rod 7 through a bearing; the pressure plate 16 descends to ensure that the upright rod 15 and the guide rod 7 descend simultaneously; the lower end of the vertical rod 15 is provided with a wedge-shaped block 17, and when the vertical rod 15 moves downwards, the wedge-shaped block 17 can extrude the left oscillating rod 9 and the right oscillating rod 9 to separate the two oscillating rods 9.
In order to facilitate the fixation of the push rods 4, each push rod 4 is provided with a through hole, the vertical rod 3 is provided with a vertical pin 18, and the lower end of the pin 18 can be arranged in the through hole; a rubber gasket is fixed on the inner side surface of the arc-shaped plate 5.
In order to realize the rotation of the rotating disc 2 and the sleeve 6, the bottom of the rotating disc 2 is provided with a rotating shaft, the sleeve 6 is externally sleeved with a bevel gear, and the inside of the shell 1 realizes the reverse rotation of the rotating shaft and the sleeve 6 through a plurality of transmission shafts and bevel gear sets; and the guide rod 7 and the sleeve 6 are matched with each other through a key and a key groove.
In order to realize that the gear shaft 806 rotates to drive the driving roller 803 to rotate, a one-way gear is fixedly sleeved at the rear end of the gear shaft 806, a gear meshed with the one-way gear is installed at the rear end of the driving roller 803, and the driven roller 804 and the side plate 802 are in friction fit.
In order to realize the automatic upward resetting of the guide rod 7, the guide rod 7 is sleeved with a pressure spring 19 positioned between the lower end surface of the sleeve 6 and the bottom plate 801.
In order to drive the turntable 2 to rotate, a motor 20 for driving the turntable 2 to rotate is installed inside the housing 1.
In order to better clean dust, the upper end surfaces of the left box body 10 and the right box body 10 are semicircular; meanwhile, a brush 21 is fixed on the inner side surface of each box body 10; after the left and right box bodies 10 are drawn close to the middle under the action of the swing rod 9, the upper end surfaces of the two box bodies 10 can be combined into a complete circle.
In order to realize the automatic approaching of the swinging rod 9 to the middle, a torsion spring is arranged at the hinging point of the swinging rod 9 and the shell 1.
When the device is used, a rock test piece to be polished needs to be installed, the test piece is placed between the left arc-shaped plate 5 and the right arc-shaped plate 5 when being installed, and the whole test piece is lifted, so that the center of the height of the test piece corresponds to the position of the push rod 4 (approximately corresponding to the position, and accuracy is not needed); at the moment, the lower end face of the test piece is not contacted with the turntable 2; the whole test piece is convenient to reverse at the later stage; then the left push rod 4 and the right push rod 4 are pushed inwards, the pin 18 is placed in the through hole of the push rod 4 through the pin 18, the position of the push rod 4 is fixed, and the test piece is kept in a vertical state.
After the test piece is fixed, the pressing plate 16 is still in a state of not pressing downwards, the polishing assembly 8 is higher than the upper end face of the test piece and is not in contact with the test piece, and meanwhile the two box bodies 10 at the end parts of the swing rods 9 are close to each other and comprise the upper end face of the test piece.
When beginning to polish, at first the starter motor 20, motor 20 can drive carousel 2 forward rotation through transmission shaft and bevel gear group this moment, simultaneously refer to fig. 3, can see that, through the cooperation of two bevel gears from top to bottom, sleeve 6 can the antiport this moment, because cooperate through key and keyway between sleeve 6 and the guide arm 7, consequently guide arm 7 also can the antiport, drives polishing subassembly 8 and rotates then.
When polishing is needed, the pressing plate 16 is pressed downwards at first, the upright rod 15 and the guide rod 7 move downwards at the same time, and the wedge block 17 is fixed at the lower end of the upright rod 15, so that the wedge block 17 can extrude the left and right oscillating rods 9 hinged on the shell 1, and the two oscillating rods 9 are far away from each other; then the boxes 10 at the ends of the two oscillating rods 9 are moved away from each other; eventually leaving the two cases 10 out of the upper end of the barrier test piece.
Then, as the guide rod 7 continuously descends, the gear shaft 806 in the grinding assembly 8 at the lower end of the guide rod 7 contacts with the rack 807 on the outer side surface of the sleeve 6, but at this time, the drive roller 803 does not rotate because the one-way gear is installed at the end of the gear shaft 806. I.e., sandpaper 805 does not shift. Then the lower pressing guide rod 7 is extruded, and the lower end face of the polishing assembly 8 is contacted with the upper end face of the test piece; thereby polish, when polishing, can adjust the dynamics of pressing as required to adjust the degree of polishing.
Because the pressure spring 19 is sleeved on the guide rod 7, after the sand paper 805 is ground flat or the grinding effect is lost after the sand paper is ground for a period of time, only the pressing plate 16 needs to be loosened at the moment, the pressing plate 16 is not pressed, the guide rod 7 can be reset upwards at the moment, and the vertical rod 15 is driven to be reset upwards through the pressing plate 16. In the process of upward resetting of the guide rod 7, at this time, the gear on the gear shaft 806 of the grinding assembly 8 is meshed with the rack 807 outside the sleeve 6 again, at this time, the gear shaft 806 rotates to drive the driving roller 803 to rotate, and then the sand paper 805 is wound on the driving roller 803, so that the sand paper 805 is displaced, the used sand paper 805 is wound on the driving roller 803, and the unused part of the sand paper 805 is placed on the lower end face of the bottom plate 801 again.
And when the upright rod 15 is reset upwards, the wedge block 17 at the lower end of the upright rod 15 does not block the swinging rod 9, and the boxes 10 at the ends of the two swinging rods 9 are combined together; and the friction wheel 11 in each box 10 contacts with the outer edge surface of the test piece, so that the impeller 14 is driven to rotate by the belt pulley and the belt, and after the impeller 14 rotates, the impeller 14 sucks the dust in the box 10 into the dust collecting bag 13, thereby realizing the collection of the dust and avoiding the environmental pollution.
Meanwhile, as the brush 21 is installed in the upper side plate 802 of the box body 10, the brush 21 can also clean the upper end of the test piece, so that dust can be better collected.
And then the test piece can be pressed downwards again to be polished, and the end surface of the test piece is flattened through polishing for multiple times.
After the upper end face of the test piece is polished, the motor 20 can be turned off, the pin 18 on the vertical rod 3 is pulled out, the whole test piece is rotated, the polished end part faces downwards, the non-polished end part faces upwards, the pin 18 is inserted again, and then the other end of the test piece is polished; therefore, the test piece can reach the required standard, and the stress is balanced when the strength test is carried out at the later stage.
This device establishes through propping up the test piece is unsettled, the upper and lower terminal surface of adjustment test piece that can be convenient quick, can also guarantee the depth of parallelism of two upper and lower terminal surfaces simultaneously.
This device has realized carousel 2 corotation through setting up a plurality of transmission shafts and bevel gear group, 8 reversals of subassembly of polishing simultaneously, and the relative rotational speed of test piece and abrasive paper 805 doubles when can making to polish, the speed and the effect of polishing of improvement that can double.
In the device, the guide rod 7 can move up and down relative to the sleeve 6, and meanwhile, the guide rod 7 can rotate together with the sleeve 6, so that the test piece can be polished by pressing the pressing plate 16 without holding the sand paper 805 by hands, and danger is avoided. Simultaneously, through the relative up-and-down movement of the guide rod 7 and the sleeve 6, the automatic replacement of the sand paper 805 can be realized, the loss of effect of the sand paper 805 after long-time grinding is avoided, and the automatic quick replacement of the sand paper 805 can be realized.
In the device, the vertical rod 15 is used for moving up and down, and the wedge-shaped block 17, the swing rod 9 and the box body 10 are matched; the mutual cooperation of polishing and dust absorption has been realized, does not dust absorption when polishing promptly, does not polish when the dust absorption, can avoid the follow-up effect of polishing of granule influence that test piece terminal surface accumulated to utilize the rotation of test piece, can drive impeller 14 and rotate, make the dust of production can be collected in the dust bag 13, avoided dust pollution, protected operational environment.

Claims (10)

1. The end face grinding device for the rock detection test piece comprises a shell (1) and is characterized in that a rotary table (2) is mounted at the bottom of the shell (1), a left vertical rod and a right vertical rod (3) are mounted on the rotary table (2), a transverse push rod (4) penetrates through each vertical rod (3), an arc-shaped plate (5) is fixed at the inner end of each push rod (4), and the position of each push rod (4) can be fixed; the upper end of the shell (1) is provided with a sleeve (6) which is coaxial with the rotary table (2) and rotates reversely, a guide rod (7) capable of moving up and down is arranged in the sleeve (6), and the sleeve (6) rotates to drive the guide rod (7) to rotate; the lower end of the guide rod (7) is provided with a polishing component (8);
the grinding assembly (8) comprises a bottom plate (801) fixed on the lower end face of the guide rod (7), side plates (802) are fixed on the front side and the rear side of the bottom plate (801), a driven roller (804) located on the right side and a driving roller (803) located on the left side are installed between the front side plate and the rear side plate (802), sand paper (805) is wound on the driven roller shaft, the particle surface of the sand paper (805) faces downwards, and the free end of the sand paper (805) is wound on the main roller shaft after passing through the lower end face of the bottom plate (801); a gear shaft (806) is connected between the front side plate and the rear side plate (802), and a rack (807) meshed with a gear on the gear shaft (806) is arranged on the side surface of the sleeve (6); the guide rod (7) moves upwards to drive the driving roller (803) to rotate through the gear shaft (806), so that the sand paper (805) is wound on the driving roller (803).
2. The device for grinding the end face of the rock detection test piece according to claim 1, wherein the shell (1) is hinged with a left oscillating rod and a right oscillating rod (9) which can oscillate and approach to the middle, a semi-annular box body (10) is fixed at the end of each oscillating rod (9), a plurality of friction wheels (11) are installed inside the box body (10), a channel (12) is formed in the side face of the shell (1), a dust collection bag (13) is connected at the outer end of the channel (12), an impeller (14) is installed inside the channel (12), a belt pulley is sleeved on a main shaft of the impeller (14), a belt pulley is coaxially fixed on the friction wheels (11), and the belt pulley on the friction wheels (11) and the belt pulley on the impeller (14) rotate together through the belt and a reversing wheel.
3. The end face grinding device for the rock detection test piece is characterized in that a vertical rod (15) capable of moving up and down is mounted on the shell (1), a horizontal pressing plate (16) is mounted at the upper end of the vertical rod (15), and the pressing plate (16) is rotatably connected with the upper end of the guide rod (7) through a bearing; the pressure plate (16) descends to ensure that the upright rod (15) and the guide rod (7) descend simultaneously; the lower end of the vertical rod (15) is provided with a wedge-shaped block (17), and when the vertical rod (15) moves downwards, the wedge-shaped block (17) can extrude the left oscillating rod and the right oscillating rod (9) to separate the two oscillating rods (9).
4. The end face grinding device for the rock detection test piece is characterized in that each push rod (4) is provided with a through hole, a vertical pin (18) is arranged on each vertical rod (3), and the lower end of each pin (18) can be placed in the through hole; a rubber gasket is fixed on the inner side surface of the arc-shaped plate (5).
5. The end face grinding device for the rock detection test piece according to claim 1, wherein a rotating shaft is installed at the bottom of the rotary table (2), a bevel gear is sleeved outside the sleeve (6), and the rotating shaft and the sleeve (6) rotate in opposite directions through a plurality of transmission shafts and bevel gear sets in the shell (1); meanwhile, the guide rod (7) and the sleeve (6) are matched with each other through a key and a key groove.
6. The end face grinding device for the rock detection test piece according to claim 1, wherein a one-way gear is fixedly sleeved at the rear end of the gear shaft (806), a gear meshed with the one-way gear is installed at the rear end of the driving roller (803), and the driven roller (804) and the side plate (802) are in friction fit.
7. The end face grinding device for the rock detection test piece as claimed in claim 1, wherein the guide rod (7) is sleeved with a pressure spring (19) positioned between the lower end face of the sleeve (6) and the bottom plate (801).
8. The end face grinding device for the rock detection test piece according to claim 1, characterized in that a motor (20) for driving the turntable (2) to rotate is installed inside the shell (1).
9. The end face grinding device for the rock detection test piece according to claim 2, wherein the upper end faces of the left box body and the right box body (10) are semicircular; meanwhile, a brush (21) is fixed on the inner side surface of each box body (10); after the left box body (10) and the right box body (10) are closed towards the middle under the action of the swing rod (9), the upper end surfaces of the two box bodies (10) can be combined into a complete circle.
10. The end face grinding device for the rock detection test piece is characterized in that a torsion spring is installed at the hinged point of the swinging rod (9) and the shell (1).
CN202010896690.9A 2020-08-31 2020-08-31 Rock detection test piece end surface grinding device Active CN111958420B (en)

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CN113601312B (en) * 2021-10-11 2021-12-24 邳州市南方建材有限公司 Manual grinding device of metal building materials tip burr
CN116922184B (en) * 2023-05-05 2023-12-15 陕西众星蓝图教育科技有限公司 Repeated polishing equipment for office table plate production

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CN103801998B (en) * 2012-11-13 2016-05-11 约科布缪勒机械制造（中国）有限公司 A kind of processing method of surperficial burnt-in sand paper winding off spindle
CN107044931B (en) * 2017-04-14 2023-06-20 华侨大学 Extremely fragile rock end face grinding machine for rock test
CN207309702U (en) * 2017-10-20 2018-05-04 惠州市德赛精密部件有限公司 A kind of automatic device for replacing sand paper
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