CN109176301B - Automatic grinding device for test piece - Google Patents
Automatic grinding device for test piece Download PDFInfo
- Publication number
- CN109176301B CN109176301B CN201811186344.0A CN201811186344A CN109176301B CN 109176301 B CN109176301 B CN 109176301B CN 201811186344 A CN201811186344 A CN 201811186344A CN 109176301 B CN109176301 B CN 109176301B
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- China
- Prior art keywords
- test piece
- clamping
- pair
- grinding
- bolt
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Classifications
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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
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
- B24B37/07—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool
- B24B37/10—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for single side lapping
- B24B37/105—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for single side lapping the workpieces or work carriers being actively moved by a drive, e.g. in a combined rotary and translatory movement
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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
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/27—Work carriers
- B24B37/30—Work carriers for single side lapping of plane surfaces
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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
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/34—Accessories
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- 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
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- 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
Abstract
The application provides an automatic test piece grinding device which comprises a frame, a test piece clamping mechanism, a counter grinding plate clamping mechanism and a power mechanism, wherein the frame is provided with a plurality of grinding plates; when grinding is started, the lower surface of the test piece is rough, friction force exists between the sliding through hole and the sliding rod and friction force exists between the pre-tightening bolt and the sliding rod due to the fact that the pressing bolt presses down, and the sum of the friction forces in the three aspects is not smaller than centrifugal force, so that the test piece clamping mechanism only rotates but does not slide outwards at the moment; the friction force is reduced along with the fact that the lower surface of the test piece is ground to be gradually smooth, when the sum of the friction forces in the three aspects is smaller than the centrifugal force, the test piece clamping mechanism rotates and simultaneously slides outwards, and finally the test piece clamping mechanism is blocked by the limiting blocking piece when sliding to the outer end of the sliding rod, so that the one-time grinding is completed; if the grinding effect is not good, adjusting the compression bolt and the pre-tightening bolt to adjust the friction force; thereby improving the grinding efficiency and the grinding quality.
Description
Technical Field
The application relates to the technical field of grinding machinery, in particular to an automatic grinding device for a test piece.
Background
With the deep research of tribology and the improvement of the processing precision by modern processing technology, the surface texture plays an increasingly important role in antifriction and antiwear, and has become the focus of research. When different surface textures are studied, a great deal of experiments are needed to demonstrate the effect of the surface textures under different working conditions. The grinding of the surface of the test piece plays a very important role in actual production and experiments, and particularly in the experimental stage, the processing surface is firstly ground, polished and cleaned when the novel surface texture is processed. The traditional laboratory is used for grinding test pieces manually, so that the problems of low machining efficiency, unstable machining precision, unstable machining quality and the like exist, and experimental errors are easily increased. How to improve the grinding efficiency and accuracy of test pieces is one of the problems to be solved urgently.
Disclosure of Invention
The application aims to provide an automatic test piece grinding device.
In order to solve the technical problems, the technical scheme provided by the application is as follows:
an automatic test piece grinding device comprises a frame, a test piece clamping mechanism, a grinding plate for rubbing a test piece, a grinding plate clamping mechanism and a power mechanism;
the frame comprises a base plate, a support column and a cantilever;
the power mechanism comprises a motor, a transmission shaft and a transmission shaft supporting pipe, wherein the motor, the transmission shaft and the transmission shaft supporting pipe are arranged on the frame, and an output shaft of the motor is in transmission connection with an input end of the transmission shaft;
the pair of grinding plates are fixed through the pair of grinding plate clamping mechanisms and are horizontally arranged on the upper plate surface of the base plate, and the axial center line of the transmission shaft is perpendicular to the upper plate surface of the pair of grinding plates;
the lower end of the transmission shaft is provided with a plurality of sliding rods, the axial center line of each sliding rod is parallel to the upper plate surface of the corresponding grinding plate, the included angle between each sliding rod and the radial line of the transmission shaft is 10 degrees, and the deflection direction of each sliding rod is the same as the rotation direction of the transmission shaft;
the test piece clamping mechanism comprises an upper clamping frame, a lower clamping frame, a pre-tightening bolt, a compression bolt and a clamping device, wherein a sliding through hole is formed in the upper clamping frame, the sliding through hole on the upper clamping frame is sleeved on the sliding rod to form a sliding pair for the test piece clamping mechanism to rotate under the drive of the transmission shaft and to slide outwards under the drive of centrifugal force, the wall of the sliding through hole is provided with the pre-tightening bolt for increasing the sliding resistance of the test piece clamping mechanism, and the outer end face of the sliding rod is provided with a limiting baffle for preventing the upper clamping frame from sliding out;
the upper clamping frame and the lower clamping frame are overlapped in the vertical direction, an inner threaded through hole is further formed in the upper clamping frame, the screw rod of the compression bolt comprises an upper threaded part and a lower polished rod part, the upper threaded part of the screw rod of the compression bolt is fixedly penetrated into the inner threaded through hole on the upper clamping frame through threaded connection, and the lower polished rod part of the screw rod of the compression bolt is inserted into a smooth blind hole on the lower clamping frame so as to be used for adjusting the lower pressure of the lower clamping frame to a test piece through the up-down lifting of the compression bolt;
the clamping device is used for directly contacting and clamping the test piece so that the test piece is in friction contact with the upper plate surface of the opposite grinding plate, and the clamping device is arranged at the lower end of the lower clamping frame.
Preferably, the lower end of the support column is arranged on the upper plate surface of the base plate, and one end of the cantilever is arranged on the upper end of the support column;
the transmission shaft supporting tube is arranged at the other end of the cantilever, the transmission shaft is arranged in the transmission shaft supporting tube, the upper port and the lower port of the transmission shaft supporting tube are respectively blocked by a top cover and a bottom cover, limit bearings are arranged on the top cover and the bottom cover, the upper part of the transmission shaft is fixed on the top cover through the limit bearings on the top cover, and the lower part of the transmission shaft is fixed on the bottom cover through the limit bearings on the bottom cover;
the upper end of the transmission shaft penetrates through the top cover to be exposed outside and is in transmission connection with an output shaft of the motor through a coupler, and the motor is arranged on the upper surface of the top cover;
the lower end of the transmission shaft penetrates through the bottom cover and is exposed outside.
Preferably, the pair of grinding plate clamping mechanisms comprise a left pair of grinding plate clamping blocks, a right pair of grinding plate clamping blocks, a left pair of grinding plate clamping bolts, a right pair of grinding plate clamping bolts, a left bolt supporting table and a right bolt supporting table which are respectively positioned at the left side and the right side of the pair of grinding plates;
the upper plate surface of the base plate is provided with a dovetail table, the left pair of grinding plate clamping blocks and the right pair of grinding plate clamping blocks are provided with dovetail grooves, and the left pair of grinding plate clamping blocks and the right pair of grinding plate clamping blocks are sleeved on the dovetail table through the dovetail grooves on the left pair of grinding plate clamping blocks and the right pair of grinding plate clamping blocks to form a sliding pair for sliding left and right to clamp the pair of grinding plates;
the screw rods of the left pair of grinding plate clamping bolts and the right pair of grinding plate clamping bolts comprise an external thread part and an internal polish rod part;
the left bolt supporting table is arranged on the upper surface of the base plate and is positioned at the left side of the left pair of grinding plate clamping blocks, the external thread part of the screw rod of the left pair of grinding plate clamping bolts is penetrated and fixed in the internal thread hole on the left bolt supporting table through threaded connection, and the internal polish rod part of the screw rod of the left pair of grinding plate clamping bolts is inserted into the smooth blind hole on the left pair of grinding plate clamping blocks;
the right bolt supporting table is arranged on the upper surface of the base plate and is positioned on the right side of the right pair of grinding plate clamping blocks, an external thread part of a screw rod of the right pair of grinding plate clamping bolts is penetrated and fixed in an internal threaded hole on the right bolt supporting table through threaded connection, and an internal polish rod part of the screw rod of the right pair of grinding plate clamping bolts is inserted into a smooth blind hole on the right pair of grinding plate clamping blocks;
the left pair of grinding plate clamping bolts and the right pair of grinding plate clamping bolts are mutually symmetrical and are used for adjusting the distance between the left pair of grinding plate clamping blocks and the right pair of grinding plate clamping blocks by screwing the left pair of grinding plate clamping bolts and/or the right pair of grinding plate clamping bolts so as to clamp the grinding plates.
Preferably, the left pair of grinding plate clamping blocks and the right pair of grinding plate clamping blocks are provided with multi-stage step grooves for clamping the grinding plates with different radial sizes.
Preferably, the specimen clamping mechanism comprises a left specimen clamping block, a right specimen clamping block, a left specimen clamping bolt, a right specimen clamping bolt, a left bolt supporting block and a right bolt supporting block which are respectively positioned at the left side and the right side of the slide bar;
the screw rods of the left test piece clamping bolt and the right test piece clamping bolt comprise an external thread part and an internal polish rod part;
the left bolt supporting block is arranged at the lower end of the lower clamping frame and is positioned at the left side of the left test piece clamping block, an external thread part of a screw rod of the left test piece clamping bolt is fixedly penetrated into an internal thread hole on the left bolt supporting block through threaded connection, and an internal polish rod part of the screw rod of the left test piece clamping bolt is inserted into a smooth blind hole on the left test piece clamping block;
the right bolt supporting block is arranged at the lower end of the lower clamping frame and is positioned at the right side of the right test piece clamping block, an external thread part of a screw rod of the right test piece clamping bolt is fixedly penetrated into an internal thread hole on the right bolt supporting block through threaded connection, and an internal polish rod part of the screw rod of the right test piece clamping bolt is inserted into a smooth blind hole on the right test piece clamping block;
the left test piece clamping bolt and the right test piece clamping bolt are mutually symmetrical and are used for adjusting the distance between the left test piece clamping block and the right test piece clamping block by screwing the left test piece clamping bolt and/or the right test piece clamping bolt so as to clamp a test piece.
Preferably, the left test piece clamping block and the right test piece clamping block are provided with multi-stage step grooves for clamping test pieces with different radial sizes.
Preferably, a flow blocking frame is arranged on the upper plate surface of the opposite grinding plate so as to prevent the liquid intermediate grinding agent from splashing during rotation.
The application provides an automatic test piece grinding device which comprises a frame, a test piece clamping mechanism, a counter grinding plate clamping mechanism and a power mechanism, wherein the frame is provided with a plurality of grinding plates;
when the test piece starts to be ground, the friction force exists on the lower surface of the test piece due to the fact that the lower surface of the test piece is rough and is pressed down by the compression bolt, the sliding rod has a certain gradient, so that the friction force exists between the sliding through hole and the sliding rod, and the friction force exists between the pre-tightening bolt and the sliding rod, at the moment, the sum of the friction forces in the three aspects is not smaller than the centrifugal force, so that the test piece clamping mechanism only rotates under the drive of the transmission shaft but does not slide outwards along the sliding rod;
the friction force is reduced along with the fact that the lower surface of the test piece is ground gradually and smoothly, when the sum of the friction forces in the three aspects is smaller than the centrifugal force, the whole test piece clamping mechanism rotates under the drive of the transmission shaft and simultaneously slides outwards along the sliding rod, and finally the test piece clamping mechanism is blocked by the limiting blocking piece when sliding to the outer end of the sliding rod, so that the one-time grinding is completed;
the test piece is detached to observe the grinding effect, if the grinding effect is not good, the compression bolt and the pre-tightening bolt are adjusted to increase or reduce the friction force at the two positions, and the friction force and the constant centrifugal force reach a new matching combination again until the grinding effect is satisfied;
therefore, the grinding efficiency, the grinding precision and the grinding quality are improved, and the experimental error is reduced.
Drawings
Fig. 1 is a schematic perspective view of an automatic test piece grinding device according to an embodiment of the present application;
FIG. 2 is a schematic top view of FIG. 1;
FIG. 3 is a schematic left-hand view of the structure of FIG. 1;
fig. 4 is a schematic perspective view of the slide bar, the specimen clamping mechanism and the specimen in fig. 1.
In the figure: 1 a base plate, 2 a support column and 3 a cantilever;
4 transmission shafts, 5 transmission shaft supporting pipes, 501 top covers and 502 bottom covers;
6 pairs of grinding plates and 7 test pieces;
8, a slide bar;
9 upper clamping frames, 10 lower clamping frames, 11 pre-tightening bolts, 12 compression bolts, 1201 lower polish rod parts and 13 limiting baffle plates;
the clamping device comprises a clamping block 14 for the left grinding plate, a clamping block 15 for the right grinding plate, a clamping bolt 16 for the left grinding plate, a clamping bolt 17 for the right grinding plate, a supporting table 18 for the left bolt, a supporting table 19 for the right bolt and a dovetail table 20;
a left test piece clamping block 21, a right test piece clamping block 22, a left test piece clamping bolt 23, a right test piece clamping bolt 24, a left bolt supporting block 25 and a right bolt supporting block 26;
27 flow-blocking frame.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should be understood that the terms "center", "axial", "radial", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "horizontal", "vertical", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1, and the positional relationships in other drawings are based on the orientations or positional relationships shown in fig. 1, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" may include one or more such features, either explicitly or implicitly.
In the present application, unless expressly stated or limited otherwise, a first feature being "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is less level than the second feature.
Referring to fig. 1 to 4, fig. 1 is a schematic perspective view of an automatic test piece grinding device according to an embodiment of the present application; FIG. 2 is a schematic top view of FIG. 1; FIG. 3 is a schematic left-hand view of the structure of FIG. 1; fig. 4 is a schematic perspective view of the slide bar, the specimen clamping mechanism and the specimen in fig. 1.
The application provides an automatic test piece grinding device which comprises a frame, a test piece clamping mechanism, a grinding plate 6 for rubbing a test piece 7, a grinding plate clamping mechanism and a power mechanism, wherein the grinding plate 6 is used for rubbing the test piece;
the frame comprises a base plate 1, a support column 2 and a cantilever 3;
the power mechanism comprises a motor, a transmission shaft 4 and a transmission shaft supporting pipe 5, wherein the motor, the transmission shaft 4 and the transmission shaft supporting pipe 5 are arranged on the frame, and an output shaft of the motor is in transmission connection with an input end of the transmission shaft 4;
the pair of grinding plates 6 are fixed by the pair of grinding plate clamping mechanism and are horizontally arranged on the upper plate surface of the base plate 1, and the axial center line of the transmission shaft 4 is perpendicular to the upper plate surface of the pair of grinding plates 6;
the lower end of the transmission shaft 4 is provided with a plurality of sliding rods 8, the axial center line of each sliding rod 8 is parallel to the upper plate surface of the corresponding grinding plate 6, the included angle between each sliding rod and the radial line of the transmission shaft 4 is 10 degrees, and the deflection direction of each sliding rod 8 is the same as the rotation direction of the transmission shaft 4;
the test piece clamping mechanism comprises an upper clamping frame 9, a lower clamping frame 10, a pre-tightening bolt 11, a compression bolt 12 and a clamping device, wherein a sliding through hole is formed in the upper clamping frame 9, the sliding through hole in the upper clamping frame 9 is sleeved on the sliding rod 8 to form a sliding pair for the test piece clamping mechanism to rotate under the drive of the transmission shaft 4 and to slide outwards under the drive of centrifugal force, the wall of the sliding through hole is provided with the pre-tightening bolt 11 for increasing the sliding resistance of the test piece clamping mechanism, and the outer end face of the sliding rod 8 is provided with a limiting baffle 13 for preventing the upper clamping frame 9 from sliding out;
the upper clamping frame 9 and the lower clamping frame 10 are overlapped in the up-down direction, an internal thread through hole is further formed in the upper clamping frame 9, a screw rod of the compression bolt 12 comprises an upper thread part and a lower polish rod part 1201, the upper thread part of the screw rod of the compression bolt 12 is fixedly penetrated in the internal thread through hole on the upper clamping frame 9 through threaded connection, and the lower polish rod part 1201 of the screw rod of the compression bolt 12 is inserted into a smooth blind hole on the lower clamping frame 10 so as to be used for adjusting the lower pressure of the lower clamping frame 10 on the test piece 7 through up-down lifting of the compression bolt 12;
the clamping device is used for directly contacting and clamping the test piece 7 so that the test piece 7 is in friction contact with the upper plate surface of the opposite grinding plate 6, and is arranged on the lower end of the lower clamping frame 10.
In one embodiment of the present application, the lower end of the support column 2 is disposed on the upper plate surface of the base plate 1, and one end of the cantilever 3 is disposed on the upper end of the support column 2;
the transmission shaft support pipe 5 is arranged at the other end of the cantilever 3, the transmission shaft 4 is arranged in the transmission shaft support pipe 5, the upper port and the lower port of the transmission shaft support pipe 5 are respectively blocked by the top cover 501 and the bottom cover 502, the top cover 501 and the bottom cover 502 are respectively provided with a limit bearing, the upper part of the transmission shaft 4 is fixed on the top cover 501 through the limit bearing on the top cover 501, and the lower part of the transmission shaft 4 is fixed on the bottom cover 502 through the limit bearing on the bottom cover 502;
the upper end of the transmission shaft 4 penetrates through the top cover 501 to be exposed outside and is in transmission connection with an output shaft of the motor through a coupler, and the motor is arranged on the upper surface of the top cover 501;
the lower end of the driving shaft 4 penetrates the bottom cover 502 to be exposed.
In one embodiment of the present application, the pair of grinding plate clamping mechanisms comprise a left pair of grinding plate clamping blocks 14, a right pair of grinding plate clamping blocks 15, a left pair of grinding plate clamping bolts 16, a right pair of grinding plate clamping bolts 17, a left bolt supporting table 18 and a right bolt supporting table 19 which are respectively positioned at the left side and the right side of the pair of grinding plates 6;
the upper plate surface of the base plate 1 is provided with a dovetail table 20, the left pair of grinding plate clamping blocks 14 and the right pair of grinding plate clamping blocks 15 are provided with dovetail grooves, and the left pair of grinding plate clamping blocks 14 and the right pair of grinding plate clamping blocks 15 are sleeved on the dovetail table 20 through the dovetail grooves on the left pair of grinding plate clamping blocks 14 and the right pair of grinding plate clamping blocks to form a sliding pair for sliding left and right to clamp the pair of grinding plates 6;
the screws of the left pair of grinding plate clamping bolts 16 and the right pair of grinding plate clamping bolts 17 comprise an external thread part and an internal polish rod part;
the left bolt supporting table 18 is arranged on the upper surface of the base plate 1 and is positioned at the left side of the left pair of grinding plate clamping blocks 14, the external thread part of the screw rod of the left pair of grinding plate clamping bolts 16 is penetrated and fixed in the internal thread hole on the left bolt supporting table 18 through threaded connection, and the internal polish rod part of the screw rod of the left pair of grinding plate clamping bolts 16 is inserted into the smooth blind hole on the left pair of grinding plate clamping blocks 14;
the right bolt supporting table 19 is arranged on the upper surface of the base plate 1 and is positioned on the right side of the right pair of grinding plate clamping blocks 15, an external thread part of a screw rod of the right pair of grinding plate clamping bolts 17 is fixedly penetrated into an internal threaded hole on the right bolt supporting table 19 through threaded connection, and an internal polish rod part of the screw rod of the right pair of grinding plate clamping bolts 17 is inserted into a smooth blind hole on the right pair of grinding plate clamping blocks 15;
the left pair of grind plate clamping bolts 16 and the right pair of grind plate clamping bolts 17 are symmetrical to each other for clamping the pair of grind plates 6 by adjusting the spacing between the left pair of grind plate clamping blocks 14 and the right pair of grind plate clamping blocks 15 by screwing the left pair of grind plate clamping bolts 16 and/or the right pair of grind plate clamping bolts 17.
In one embodiment of the present application, the left and right pair of grind plate clamping blocks 14 and 15 are provided with stepped grooves for clamping different radial sizes of the pair of grind plates 6.
In one embodiment of the present application, the specimen clamping mechanism includes a left specimen clamping block 21, a right specimen clamping block 22, a left specimen clamping bolt 23, a right specimen clamping bolt 24, a left bolt supporting block 25, a right bolt supporting block 26, which are respectively located at the left and right sides of the slide bar 8;
the screw rods of the left test piece clamping bolt 23 and the right test piece clamping bolt 24 comprise an external thread part and an internal polish rod part;
the left bolt supporting block 25 is arranged at the lower end of the lower clamping frame 10 and is positioned at the left side of the left test piece clamping block 21, an external thread part of a screw rod of the left test piece clamping bolt 23 is penetrated and fixed in an internal threaded hole on the left bolt supporting block 25 through threaded connection, and an internal polish rod part of the screw rod of the left test piece clamping bolt 23 is inserted into a smooth blind hole on the left test piece clamping block 21;
the right bolt supporting block 26 is arranged at the lower end of the lower clamping frame 10 and is positioned at the right side of the right test piece clamping block 22, an external thread part of a screw rod of the right test piece clamping bolt 24 is penetrated and fixed in an internal threaded hole on the right bolt supporting block 26 through threaded connection, and an internal polish rod part of the screw rod of the right test piece clamping bolt 24 is inserted into a smooth blind hole on the right test piece clamping block 22;
the left and right specimen clamping bolts 23 and 24 are symmetrical to each other for clamping the specimen 7 by adjusting the distance between the left and right specimen clamping blocks 21 and 22 by screwing the left and/or right specimen clamping bolts 23 and 24.
In one embodiment of the present application, the left and right specimen clamping blocks 21 and 22 are provided with stepped grooves for clamping the specimens 7 of different radial sizes.
In one embodiment of the present application, a flow blocking frame 27 is provided on the upper plate surface of the counter plate 6 for preventing the liquid intermediate abrasive from splashing during rotation.
The application provides an automatic test piece grinding device which comprises a frame, a test piece clamping mechanism, a counter grinding plate 6, a counter grinding plate clamping mechanism and a power mechanism, wherein the power mechanism is arranged on the frame;
when the test piece 7 starts to be ground, the friction force exists on the lower surface of the test piece 7 due to the fact that the lower surface of the test piece is rough and is pressed down by the compression bolt 12, the sliding rod 8 has a certain inclination, so that the friction force exists between the sliding through hole and the sliding rod 8, the pre-tightening bolt 11 and the sliding rod 8, and the sum of the friction forces in the three aspects is not smaller than the centrifugal force, so that the test piece clamping mechanism only rotates under the drive of the transmission shaft 4 and does not slide outwards along the sliding rod 8;
the friction force is reduced along with the gradual smooth grinding of the lower surface of the test piece 7, when the sum of the friction forces in the three aspects is smaller than the centrifugal force, the whole test piece clamping mechanism rotates under the drive of the transmission shaft 4 and simultaneously slides outwards along the sliding rod 8, and finally, the test piece clamping mechanism is blocked by the limiting blocking piece 13 when sliding to the outer end of the sliding rod 8, so that the one-time grinding is finished;
the test piece 7 is detached to observe the grinding effect, if the grinding effect is not good, the compression bolt 12 and the pre-tightening bolt 11 are adjusted to increase or reduce the friction force at the two parts, and a new matching combination is achieved again with the constant centrifugal force until the grinding effect is satisfied;
therefore, the grinding efficiency, the grinding precision and the grinding quality are improved, and the experimental error is reduced.
The method and the device which are not described in detail in the application are all prior art and are not described in detail.
The above description of the embodiments is only for aiding in the understanding of the method of the present application and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the application can be made without departing from the principles of the application and these modifications and adaptations are intended to be within the scope of the application as defined in the following claims.
Claims (5)
1. The automatic test piece grinding device is characterized by comprising a frame, a test piece clamping mechanism, a grinding plate for rubbing a test piece, a grinding plate clamping mechanism and a power mechanism;
the frame comprises a base plate, a support column and a cantilever;
the power mechanism comprises a motor, a transmission shaft and a transmission shaft supporting pipe, wherein the motor, the transmission shaft and the transmission shaft supporting pipe are arranged on the frame, and an output shaft of the motor is in transmission connection with an input end of the transmission shaft;
the pair of grinding plates are fixed through the pair of grinding plate clamping mechanisms and are horizontally arranged on the upper plate surface of the base plate, and the axial center line of the transmission shaft is perpendicular to the upper plate surface of the pair of grinding plates;
the lower end of the transmission shaft is provided with a plurality of sliding rods, the axial center line of each sliding rod is parallel to the upper plate surface of the corresponding grinding plate, the included angle between each sliding rod and the radial line of the transmission shaft is 10 degrees, and the deflection direction of each sliding rod is the same as the rotation direction of the transmission shaft;
the test piece clamping mechanism comprises an upper clamping frame, a lower clamping frame, a pre-tightening bolt, a compression bolt and a clamping device, wherein a sliding through hole is formed in the upper clamping frame, the sliding through hole on the upper clamping frame is sleeved on the sliding rod to form a sliding pair for the test piece clamping mechanism to rotate under the drive of the transmission shaft and to slide outwards under the drive of centrifugal force, the wall of the sliding through hole is provided with the pre-tightening bolt for increasing the sliding resistance of the test piece clamping mechanism, and the outer end face of the sliding rod is provided with a limiting baffle for preventing the upper clamping frame from sliding out;
the upper clamping frame and the lower clamping frame are overlapped in the vertical direction, an inner threaded through hole is further formed in the upper clamping frame, the screw rod of the compression bolt comprises an upper threaded part and a lower polished rod part, the upper threaded part of the screw rod of the compression bolt is fixedly penetrated into the inner threaded through hole on the upper clamping frame through threaded connection, and the lower polished rod part of the screw rod of the compression bolt is inserted into a smooth blind hole on the lower clamping frame so as to be used for adjusting the lower pressure of the lower clamping frame to a test piece through the up-down lifting of the compression bolt;
the clamping device is used for directly contacting and clamping the test piece so that the test piece is in friction contact with the upper plate surface of the opposite grinding plate, and is arranged at the lower end of the lower clamping frame;
the lower ends of the support columns are arranged on the upper plate surface of the base plate, and one ends of the cantilevers are arranged on the upper ends of the support columns;
the transmission shaft supporting tube is arranged at the other end of the cantilever, the transmission shaft is arranged in the transmission shaft supporting tube, the upper port and the lower port of the transmission shaft supporting tube are respectively blocked by a top cover and a bottom cover, limit bearings are arranged on the top cover and the bottom cover, the upper part of the transmission shaft is fixed on the top cover through the limit bearings on the top cover, and the lower part of the transmission shaft is fixed on the bottom cover through the limit bearings on the bottom cover;
the upper end of the transmission shaft penetrates through the top cover to be exposed outside and is in transmission connection with an output shaft of the motor through a coupler, and the motor is arranged on the upper surface of the top cover;
the lower end of the transmission shaft penetrates through the bottom cover and is exposed outside;
the pair of grinding plate clamping mechanisms comprise a left pair of grinding plate clamping blocks, a right pair of grinding plate clamping blocks, a left pair of grinding plate clamping bolts, a right pair of grinding plate clamping bolts, a left bolt supporting table and a right bolt supporting table which are respectively positioned at the left side and the right side of the pair of grinding plates;
the upper plate surface of the base plate is provided with a dovetail table, the left pair of grinding plate clamping blocks and the right pair of grinding plate clamping blocks are provided with dovetail grooves, and the left pair of grinding plate clamping blocks and the right pair of grinding plate clamping blocks are sleeved on the dovetail table through the dovetail grooves on the left pair of grinding plate clamping blocks and the right pair of grinding plate clamping blocks to form a sliding pair for sliding left and right to clamp the pair of grinding plates;
the screw rods of the left pair of grinding plate clamping bolts and the right pair of grinding plate clamping bolts comprise an external thread part and an internal polish rod part;
the left bolt supporting table is arranged on the upper surface of the base plate and is positioned at the left side of the left pair of grinding plate clamping blocks, the external thread part of the screw rod of the left pair of grinding plate clamping bolts is penetrated and fixed in the internal thread hole on the left bolt supporting table through threaded connection, and the internal polish rod part of the screw rod of the left pair of grinding plate clamping bolts is inserted into the smooth blind hole on the left pair of grinding plate clamping blocks;
the right bolt supporting table is arranged on the upper surface of the base plate and is positioned on the right side of the right pair of grinding plate clamping blocks, an external thread part of a screw rod of the right pair of grinding plate clamping bolts is penetrated and fixed in an internal threaded hole on the right bolt supporting table through threaded connection, and an internal polish rod part of the screw rod of the right pair of grinding plate clamping bolts is inserted into a smooth blind hole on the right pair of grinding plate clamping blocks;
the left pair of grinding plate clamping bolts and the right pair of grinding plate clamping bolts are mutually symmetrical and are used for adjusting the distance between the left pair of grinding plate clamping blocks and the right pair of grinding plate clamping blocks by screwing the left pair of grinding plate clamping bolts and/or the right pair of grinding plate clamping bolts so as to clamp the grinding plates.
2. The automatic test piece grinding device according to claim 1, wherein the left pair of grinding plate clamping blocks and the right pair of grinding plate clamping blocks are provided with multi-stage step grooves for clamping the grinding plates with different radial sizes.
3. The automatic test piece grinding device according to claim 1, wherein the test piece clamping mechanism comprises a left test piece clamping block, a right test piece clamping block, a left test piece clamping bolt, a right test piece clamping bolt, a left bolt supporting block and a right bolt supporting block which are respectively positioned at the left side and the right side of the slide bar;
the screw rods of the left test piece clamping bolt and the right test piece clamping bolt comprise an external thread part and an internal polish rod part;
the left bolt supporting block is arranged at the lower end of the lower clamping frame and is positioned at the left side of the left test piece clamping block, an external thread part of a screw rod of the left test piece clamping bolt is fixedly penetrated into an internal thread hole on the left bolt supporting block through threaded connection, and an internal polish rod part of the screw rod of the left test piece clamping bolt is inserted into a smooth blind hole on the left test piece clamping block;
the right bolt supporting block is arranged at the lower end of the lower clamping frame and is positioned at the right side of the right test piece clamping block, an external thread part of a screw rod of the right test piece clamping bolt is fixedly penetrated into an internal thread hole on the right bolt supporting block through threaded connection, and an internal polish rod part of the screw rod of the right test piece clamping bolt is inserted into a smooth blind hole on the right test piece clamping block;
the left test piece clamping bolt and the right test piece clamping bolt are mutually symmetrical and are used for adjusting the distance between the left test piece clamping block and the right test piece clamping block by screwing the left test piece clamping bolt and/or the right test piece clamping bolt so as to clamp a test piece.
4. The automatic test piece grinding device according to claim 3, wherein the left test piece clamping block and the right test piece clamping block are provided with multi-stage stepped grooves for clamping test pieces of different radial sizes.
5. The automatic test piece grinding device according to claim 1, wherein a flow blocking frame is provided on the upper plate surface of the pair of grinding plates for preventing the liquid intermediate grinding agent from splashing during rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811186344.0A CN109176301B (en) | 2018-10-12 | 2018-10-12 | Automatic grinding device for test piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811186344.0A CN109176301B (en) | 2018-10-12 | 2018-10-12 | Automatic grinding device for test piece |
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| Publication Number | Publication Date |
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| CN109176301A CN109176301A (en) | 2019-01-11 |
| CN109176301B true CN109176301B (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811186344.0A Active CN109176301B (en) | 2018-10-12 | 2018-10-12 | Automatic grinding device for test piece |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001293654A (en) * | 2000-02-08 | 2001-10-23 | Matsushita Electric Ind Co Ltd | Polishing device and polishing method |
| US6932684B1 (en) * | 2004-03-08 | 2005-08-23 | Roy H. Hunt | Reciprocal blade lapping machine |
| CN201320704Y (en) * | 2008-12-17 | 2009-10-07 | 天津钢管集团股份有限公司 | Grinding mill specially used for stress corrosion test sample |
| CN105033839A (en) * | 2015-05-26 | 2015-11-11 | 北京航空航天大学 | Lithium niobate wafer grinding device with grinding pressure adjusting device and grinding method |
| CN108436763A (en) * | 2018-03-06 | 2018-08-24 | 济南大学 | The clamping device of sample is clamped when a kind of polishing for polishing machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003062742A (en) * | 2001-08-21 | 2003-03-05 | Seiko Instruments Inc | Polishing device for end face and method therefor |
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2018
- 2018-10-12 CN CN201811186344.0A patent/CN109176301B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001293654A (en) * | 2000-02-08 | 2001-10-23 | Matsushita Electric Ind Co Ltd | Polishing device and polishing method |
| US6932684B1 (en) * | 2004-03-08 | 2005-08-23 | Roy H. Hunt | Reciprocal blade lapping machine |
| CN201320704Y (en) * | 2008-12-17 | 2009-10-07 | 天津钢管集团股份有限公司 | Grinding mill specially used for stress corrosion test sample |
| CN105033839A (en) * | 2015-05-26 | 2015-11-11 | 北京航空航天大学 | Lithium niobate wafer grinding device with grinding pressure adjusting device and grinding method |
| CN108436763A (en) * | 2018-03-06 | 2018-08-24 | 济南大学 | The clamping device of sample is clamped when a kind of polishing for polishing machine |
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| CN109176301A (en) | 2019-01-11 |
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