Auxiliary sample grinding device of crucible polishing machine
By designing a crucible polisher auxiliary sample grinder, using the combination of file fixing frame, rotating bearing and torsion spring, the problems of uneven grinding and excessive oxidation in the prior art are solved, and uniform grinding and quality assurance of the sample surface are achieved.
Patent Information
- Application Number
- CN202420598062.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-03-26
AI Technical Summary
In the prior art, when determining the oxygen, nitrogen and hydrogen content of steel in steel production, the use of sandpaper or file to polish the sample has problems such as uneven grinding, excessive surface temperature of the sample, excessive oxidation and different methods, resulting in unstable sample quality.
A crucible polisher auxiliary sample grinder is designed, including a file fixing frame, a rotating bearing and a torsion spring. The file fixing frame is connected to the column through a rotating bearing. The torsion spring is installed on the column. The grinding surface of the file is facing the direction of retraction after the torsion spring is stretched, so as to realize the tightening, rotation and grinding of the file and the sample.
The uniform polishing of the sample surface is achieved, scratches on the sample surface are eliminated, and the heat oxidation on the sample surface is avoided, ensuring the quality of the sample.
Smart Images
Figure CN222660335U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an auxiliary sample grinding device of a crucible polishing machine, belonging to the technical field of polishing machine equipment. Background Art
[0002] In steel production, it is necessary to determine the oxygen, nitrogen and hydrogen (O / N / H) content in the steel. The determination is carried out using a sample (gas rod) turned by a machine tool. Before the determination, a crucible polisher is required to grind and polish the slight scratches and iron oxide scale on the steel surface of the sample.
[0003] At present, the samples are polished with sandpaper (400#, 800#) or files (No. 1 coarse tooth file Bastard). The polishing with sandpaper needs to be done twice. First, use 400# coarse sandpaper to grind off the iron oxide scale of the sample, and then use 800# fine sandpaper to polish. The disadvantages are that if the sample has scratches, it is difficult to polish it smooth with sandpaper. Second, polishing with sandpaper will make the surface temperature of the sample too high, causing oxidation too fast, thus forming iron oxide scale again, resulting in excessive oxygen content. The file used for polishing is No. 1 coarse tooth file Bastard. Use the file to grind off the surface iron oxide scale, and then take samples for gas analysis. The disadvantage is that the technique and strength are different for each person, and whether the iron oxide scale and other impurities on the surface of the sample can be cleaned is different, and the quality of the sample cannot be guaranteed. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide an auxiliary sample grinder for a crucible polishing machine, which can evenly grind the sample surface, eliminate scratches on the sample surface, and prevent the sample surface from heating and oxidation.
[0005] The technical solution to solve the above technical problems is:
[0006] The invention discloses an auxiliary sample grinder for a crucible polishing machine, which comprises a base, a column, a file fixing frame, a rotating bearing and a torsion spring. The column is vertically fixed on the base. The file fixing frame is composed of two parallel cross bars. There is a gap between the two parallel cross bars. The width of the gap matches the thickness of the file. The file is fixed between the two cross bars. The middle parts of the two cross bars of the file fixing frame are connected to the upper end of the column through the rotating bearing. The torsion spring is sleeved on the column. The lower end of the torsion spring is fixedly connected to the lower end of the column. The upper end of the torsion spring is connected to the cross bar of the file fixing frame.
[0007] The auxiliary sample grinder of the crucible polishing machine has a screw hole on the side of a crossbar of the file fixing frame, and the tightening bolt tightens the file and the crossbar through the screw hole, and the grinding tooth surface of the file faces the direction of retraction after the torsion spring is stretched.
[0008] The above-mentioned crucible polishing machine auxiliary sample grinder, the upper end of the column is a stepped cylinder, the inner ring of the rotating bearing is mounted on the upper end of the column, there is a bearing connecting hole on the lower end surface of the middle part of the two cross bars of the file fixing frame, and the outer ring of the rotating bearing is embedded in the bearing connecting hole of the file fixing frame.
[0009] The beneficial effects of the utility model are:
[0010] The file fixing frame of the utility model can fix the file, the file fixing frame is connected to the upper end of the column through a rotating bearing, the file fixing frame can drive the file to rotate, the two ends of the torsion spring are respectively connected to the file fixing frame and the base, the torsion spring can press the file and the sample tightly, and the sample is rotated, so that the file can grind the sample.
[0011] The utility model has a simple structure and is easy to use. The torque of the torsion spring on the file can be adjusted by rotating the file fixing frame, so as to achieve the purpose of adjusting the friction between the file and the sample. The file can evenly grind the surface of the sample to eliminate scratches on the surface of the sample. The heat generated during the friction process is much less than the heat generated by using sandpaper, thereby ensuring the quality of sample grinding. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model;
[0013] Figure 2 yes Figure 1 A top view of
[0014] Figure 3 It is a schematic diagram of the use state of the utility model.
[0015] The markings in the figure are as follows: base 1, column 2, file fixing frame 3, file 4, rotating bearing 5, torsion spring 6, cross bar 7, tightening bolt 8, crucible polishing machine 9, sample 10. DETAILED DESCRIPTION
[0016] The utility model is composed of a base 1, a column 2, a file fixing frame 3, a file 4, a rotating bearing 5, a torsion spring 6, and a tightening bolt 8.
[0017] As shown in the figure, the base 1 is placed on the table for grinding the sample, and the base 1 is fixed to provide fixed support for adjusting the torsion of the torsion spring 6 on the file 4.
[0018] As shown in the figure, the column 2 is vertically fixed on the base 1, and the upper end of the column 2 is connected to the file fixing frame 3 through the rotating bearing 5. The upper end of the column 2 is a stepped cylinder, the inner ring of the rotating bearing 5 is sleeved on the upper end of the column 2, the lower end surface of the file fixing frame 3 has a bearing connection hole, and the outer ring of the rotating bearing 5 is embedded in the bearing connection hole of the file fixing frame 3. The file fixing frame 3 can rotate around the column 2.
[0019] As shown in the figure, the file fixing frame 3 is composed of two parallel cross bars 7, there is a gap between the two parallel cross bars 7, the width of the gap matches the thickness of the file 4, the file 4 is fixed between the two cross bars 7, one cross bar 7 has a screw hole on the side, and there is a top block between the other cross bar 7 and the surface of the file 4. The tightening bolts 8 tighten the file 4 and the cross bars 7 through the screw holes. The middle parts of the two cross bars 7 of the file fixing frame 3 are connected to the upper end of the column 2 through the rotating bearing 5.
[0020] As shown in the figure, the torsion spring 6 is mounted on the column 2, the lower end of the torsion spring 6 is fixedly connected to the lower end of the column 2, the upper end of the torsion spring 6 is connected to the cross bar 7 of the file fixing frame 3, the torsion spring 6 is a tension spring, the grinding surface of the file 4 faces the direction of the torsion spring 6 after stretching and retracting, and the torsion spring 6 is stretched and rotated to be tightened when tightening, and the retraction force of the torsion spring 6 is used to press the file 4 on the sample 10 when grinding chips.
[0021] When in use, the upper end of the torsion spring 6 can drive the file fixing frame 3 to rotate, so that the surface of the file 4 fixed on the file fixing frame 3 is pressed against the surface of the sample 10, and the file 4 can grind the surface of the sample 10 when the sample 10 rotates.
[0022] The method of using the utility model is as follows:
[0023] First, select a file 4 with a grinding roughness that meets the requirements, place the file 4 between the two cross bars 7 of the file fixing frame 3, use the tightening bolts 8 to tighten the cross bars 7 and the file 4, and the grinding surface of the file 4 faces the direction in which the torsion spring 6 is pressed and extended;
[0024] Then, hold the file holder 3 and the file 4 and rotate them in the stretching direction of the torsion spring 6. The file holder 3 rotates around the column 2 through the rotating bearing 5, and the base 1 provides support. The file holder 3 stretches the torsion spring 6. After the stretching, the torsion spring 6 accumulates elastic force to retract the torsion spring 6.
[0025] Then, the grinding surface of the file 4 in front of the file fixing frame 3 is placed against the surface of the sample 10, and the file 4 is pressed against the surface of the sample 10 under the action of the contraction elastic force of the torsion spring 6;
[0026] The crucible polishing machine is started to drive the sample 10 to rotate, and the surface of the sample 10 and the surface of the file 4 produce relative friction, so that the sample 10 can be polished. The crucible grinding machine clamps the sample 10 and rotates itself to complete the overall upper and lower polishing of the sample 10.
[0027] An embodiment of the present utility model is as follows:
[0028] The diameter of column 2 is 25 mm and the height is 220 mm;
[0029] The crossbar 7 of the file fixing frame 3 has a length of 100 mm, a width of 15 mm and a thickness of 60 mm;
[0030] The model of the file 4 is a No. 1 coarse-tooth file with a length of 400 mm;
[0031] The model of the rotating bearing 5 is 6305;
[0032] The torsion spring 6 has a diameter of 30 mm and a height of 210 mm;
[0033] The model of the tightening bolt 8 is 4.8, the yield strength is 320 MPa, the diameter is 15 mm, and the length is 50 mm.
Claims
1. A crucible polishing machine auxiliary sample grinding device, characterized in that: The file fixing frame (3) comprises a base (1), a column (2), a file fixing frame (3), a rotating bearing (5), and a torsion spring (6). The column (2) is vertically fixed on the base (1). The file fixing frame (3) is composed of two parallel cross bars (7). There is a gap between the two parallel cross bars (7). The width of the gap matches the thickness of the file (4). The file (4) is fixed between the two cross bars (7). The middle parts of the two cross bars (7) of the file fixing frame (3) are connected to the upper end of the column (2) through the rotating bearing (5). The torsion spring (6) is sleeved on the column (2). The lower end of the torsion spring (6) is fixedly connected to the lower end of the column (2). The upper end of the torsion spring (6) is connected to the cross bar of the file fixing frame (3).
2. The crucible polishing machine auxiliary sample grinding device according to claim 1, characterized in that: A screw hole is provided on the side of a cross bar (7) of the file fixing frame (3), and a tightening bolt (8) is passed through the screw hole to tighten the file (4) and the cross bar (7), and the grinding tooth surface of the file (4) faces the direction of the torsion spring (6) to retract after being stretched.
3. The auxiliary sample grinding device for a crucible polishing machine according to claim 1, characterized in that: The upper end of the column (2) is a stepped cylinder, the inner ring of the rotating bearing (5) is sleeved on the upper end of the column (2), the lower end surface of the middle part of the two cross bars (7) of the file fixing frame (3) is provided with a bearing connection hole, and the outer ring of the rotating bearing (5) is embedded in the bearing connection hole of the file fixing frame (3).