CN109333334B - Axial grinding machine for cylindrical rotating bending fatigue test sample - Google Patents
Axial grinding machine for cylindrical rotating bending fatigue test sample Download PDFInfo
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- CN109333334B CN109333334B CN201811391160.8A CN201811391160A CN109333334B CN 109333334 B CN109333334 B CN 109333334B CN 201811391160 A CN201811391160 A CN 201811391160A CN 109333334 B CN109333334 B CN 109333334B
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- grinding block
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- groove
- bending fatigue
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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
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to an axial grinding machine for a cylindrical rotating bending fatigue sample, which comprises a mounting frame, wherein a fixed grinding block is arranged on the mounting frame, a first groove is formed in the fixed grinding block, a threaded hole is formed in the fixed grinding block, a connecting bolt is connected to the threaded hole in a threaded manner, the grinding machine also comprises a movable grinding block matched with the fixed grinding block, the movable grinding block is slidably arranged on the connecting bolt in a penetrating manner, a second groove matched with the first groove is formed in the movable grinding block, the first groove and the second groove form a through hole for a section to be ground of the sample to pass through, and a strip-shaped abrasive paper mounting groove is formed between the fixed grinding block and the movable grinding block; the mounting frame is provided with a driving mechanism for driving the sample to be ground to move back and forth along the axial direction of the through hole. The sample after friction has high precision, no defects such as burrs and the like, has the texture in the axial direction, meets the national standard of metal fatigue test, realizes the automation of grinding, saves labor and processing time, and is very convenient to use.
Description
Technical Field
The invention relates to the field of sample grinding equipment, in particular to an axial grinding machine for a cylindrical rotating bending fatigue sample.
Background
At present, most metal fatigue test samples are machined by turning, and the machining precision of the machining method is low and cannot meet the national standard requirement of the fatigue test samples. The advanced machining method is grinding machining, the machining method can meet the high-precision requirement of the fatigue test sample, but the machining process is complicated, and the fatigue test sample with a complex structure is not easy to machine. However, the two processing methods process circumferential textures on the fatigue test sample, and the requirements of the fatigue test sample on the national standard of metal fatigue test in the direction of the axial textures are not met.
Disclosure of Invention
The invention aims to provide an axial grinding machine for a cylindrical rotating bending fatigue sample, which solves the problem that the circumferential texture on the sample does not meet the national standard requirement in the existing processing mode.
In order to achieve the aim, the axial grinding machine for the cylindrical rotating bending fatigue test sample adopts the following technical scheme: an axial grinding machine for a cylindrical rotating bending fatigue sample comprises a mounting frame, wherein a fixed grinding block is arranged on the mounting frame, a first groove is formed in the fixed grinding block, a threaded hole is formed in the fixed grinding block, a connecting bolt is connected to the threaded hole in a threaded manner, the grinding machine further comprises a movable grinding block matched with the fixed grinding block, the movable grinding block is slidably arranged on the connecting bolt in a penetrating manner, a second groove matched with the first groove is formed in the movable grinding block, the first groove and the second groove form a through hole for a section to be ground of the sample to pass through, and a strip-shaped abrasive paper mounting groove is formed between the fixed grinding block and the movable grinding block; the mounting frame is provided with a driving mechanism for driving the sample to be ground to axially reciprocate along the through hole, the driving mechanism comprises a rotating shaft and a driving motor, the rotating shaft is rotatably arranged on the mounting frame, the driving motor drives the rotating shaft to rotate, an eccentric wheel device used for extruding the end part of the sample to be ground is arranged above the through hole in the rotating shaft, and an elastic device used for extruding the other end of the sample to be ground and resetting the sample to be ground is arranged below the through hole in the mounting frame.
The eccentric wheel device comprises an eccentric wheel connected to the rotating shaft and a rolling bearing sleeved on the outer side of the eccentric wheel.
The number of the through holes is two, the number of the eccentric wheels is two, the eccentric wheels correspond to the through holes one by one, and the axial directions of the two eccentric wheels are symmetrically arranged along the axial line of the rotating shaft.
The elastic device comprises a hollow installation cylinder arranged at the bottom of the installation frame, and a pressure spring is installed in a cavity of the installation cylinder.
Bar abrasive paper mounting groove is including setting up the bar abrasive paper first mounting groove of the first bar abrasive paper installation of confession on fixed grinding piece and setting up the bar abrasive paper second mounting groove of the second bar abrasive paper installation of confession on the activity grinding piece to make first bar abrasive paper and second bar abrasive paper be located the both sides of waiting to grind the sample respectively.
The mounting bracket includes chassis and the adjustable shelf on upper portion, and fixed grinding block sets up on the chassis, and actuating mechanism sets up on the adjustable shelf, and the adjustable shelf can swing and set up on the chassis, is provided with the fixed knot who goes on fixing it when the adjustable shelf pendulum to operating position between chassis and the adjustable shelf.
The movable frame is connected to the bottom frame through a hinge, the fixed structure comprises a first connecting plate arranged on the movable frame and a second connecting plate arranged on the bottom frame and corresponding to the first connecting plate, and the first connecting plate and the second connecting plate are connected through a bolt.
A first pressing plate and a second pressing plate are movably sleeved on the connecting bolt, a pressure sensor is arranged between the first pressing plate and the second pressing plate, and a spring is sleeved on the connecting bolt part between the second pressing plate and the movable grinding block.
The invention has the beneficial effects that: the driving mechanism can enable the sample to be ground to rub with the strip-shaped abrasive paper along the through hole in a reciprocating mode, so that the rubbed sample is high in precision, free of defects such as burrs and the like, and has the texture in the axial direction, the national standard of a metal fatigue test is met, meanwhile, the automation of grinding is realized, manpower and processing time are saved, and the use is very convenient.
Drawings
FIG. 1 is a first schematic structural view of an embodiment of an axial grinding machine for cylindrical rotating bending fatigue specimens in accordance with the present invention;
FIG. 2 is a schematic view of the grinder of FIG. 1 with the movable frame open;
FIG. 3 is a second schematic structural view of an embodiment of an axial grinder for cylindrical rotating bending fatigue specimens according to the present invention;
fig. 4 is a schematic view of the structure of the grinder with the movable grinding blocks removed.
Detailed Description
The embodiment of the invention relates to an axial grinding machine for a cylindrical rotating bending fatigue sample, which comprises a mounting frame 15, wherein the mounting frame 15 comprises a bottom frame 2 and an upper movable frame 8, the movable frame 8 is connected to the bottom frame 2 in a swinging mode through a hinge 14, and a fixing structure for fixing the movable frame when the movable frame swings to a working position is arranged between the bottom frame 2 and the movable frame 8. The fixing structure comprises a first connecting plate 7 arranged on the movable frame 8 and a second connecting plate 6 arranged on the bottom frame 2 and corresponding to the first connecting plate 7, and the first connecting plate 7 and the second connecting plate 6 are connected through bolts.
Be provided with fixed grinding piece 5 on chassis 2, be provided with first recess 22 on the fixed grinding piece 5, be provided with the screw hole on the fixed grinding piece 5, threaded connection has connecting bolt 18 on the screw hole, and connecting bolt 18's quantity is four and is located four end angle departments of fixed grinding piece respectively in this embodiment. The grinder also comprises a movable grinding block 3 matched with the fixed grinding block 5, the movable grinding block 3 is slidably arranged on the connecting bolt 18 in a penetrating way, a second groove matched with the first groove 22 is arranged on the movable grinding block 3, and the first groove and the second groove form a through hole for a section to be ground of a sample to pass through. Fixed grinding piece 5 and activity are provided with bar abrasive paper mounting groove 4 between grinding piece 3, and bar abrasive paper mounting groove 4 is including setting up the first mounting groove 21 of the bar abrasive paper that supplies the first bar abrasive paper installation on fixed grinding piece and setting up the bar abrasive paper second mounting groove that supplies the installation of second bar abrasive paper on the activity grinding piece to make first bar abrasive paper and second bar abrasive paper be located the both sides of waiting to grind the sample respectively. The movable frame is provided with a driving mechanism for driving the sample to be ground to move back and forth along the axial direction of the through hole.
The driving mechanism comprises a rotating shaft 10 which is rotatably arranged on the movable frame 8 and a driving motor 13 which drives the rotating shaft 10 to rotate, an eccentric wheel device which is used for extruding the end part of the sample to be ground is arranged above the through hole in the rotating shaft, and an elastic device which is used for extruding the other end of the sample 9 to be ground and resetting the other end of the sample 9 to be ground is arranged below the through hole in the mounting frame. The eccentric wheel device comprises an eccentric wheel 11 connected to the rotating shaft 10 and a rolling bearing 12 sleeved outside the eccentric wheel 11, and the top end of a belt grinding sample is pushed and pressed by means of the outer peripheral surface of the bearing. In this embodiment, two samples can be ground simultaneously, the quantity of through holes is two, the quantity of eccentric wheel also be two and with the through hole one-to-one, the axis direction of two eccentric wheels sets up along the axis symmetry of pivot, can realize that two samples move one on top of the other when grinding, make whole grinding machine atress more stable. The elastic device comprises a hollow mounting cylinder 17 arranged at the bottom of the mounting frame, a pressure spring is mounted in a cavity of the mounting cylinder, and the pressure spring realizes the upward resetting force of the grinding sample. A first pressing plate 16 and a second pressing plate 19 are movably sleeved on the connecting bolt 18, a pressure sensor 20 is arranged between the first pressing plate 16 and the second pressing plate 19, and a spring 1 is sleeved on the connecting bolt part between the second pressing plate 19 and the movable grinding block 3. The pressure sensor 20 may be connected to a display to allow real-time observation and recording of the grinding force of the test. The magnitude of the grinding force can be adjusted by four attachment bolts.
When the connecting bolt is used, the movable frame at the upper part is opened through the hinge, and the connecting bolt is unscrewed; wear to adorn two bar abrasive paper in the abrasive paper mounting groove that corresponds, wear to adorn two and treat that to grind the sample in the through-hole that corresponds and make two bar abrasive paper be located the both sides of waiting to grind the sample, treat in this embodiment that to grind the sample for cylindrical rotatory bending fatigue sample, then screw connecting bolt and observe the record power of grinding through pressure sensor, with the movable frame pendulum to the operating position on upper portion and through fixed knot structure fixed connection. The driving motor is started to enable the eccentric wheel device to push and press the upper end face of the sample to be ground downwards, the mounting cylinder below the sample to be ground can play a guiding role, the pressure spring in the mounting cylinder can play a role in enabling the sample to reset upwards, and therefore up-and-down movement of the sample to be ground is achieved. The texture direction of the surface of the sample ground by the grinding machine is axial, and the sample can meet the national standard of metal fatigue tests. And the automation of grinding is realized, so that the labor and the processing time are saved.
Claims (8)
1. The utility model provides a cylindrical rotation is axial grinding machine for bending fatigue sample which characterized in that: the grinding machine comprises a mounting frame, wherein a fixed grinding block is arranged on the mounting frame, a first groove is formed in the fixed grinding block, a threaded hole is formed in the fixed grinding block, a connecting bolt is connected to the threaded hole in a threaded manner, the grinding machine further comprises a movable grinding block matched with the fixed grinding block, the movable grinding block is slidably arranged on the connecting bolt in a penetrating manner, a second groove matched with the first groove is formed in the movable grinding block, the first groove and the second groove form a through hole for a section to be ground of a sample to pass through, and a strip-shaped abrasive paper mounting groove is formed between the fixed grinding block and the movable grinding block; the mounting frame is provided with a driving mechanism for driving the sample to be ground to axially reciprocate along the through hole, the driving mechanism comprises a rotating shaft and a driving motor, the rotating shaft is rotatably arranged on the mounting frame, the driving motor drives the rotating shaft to rotate, an eccentric wheel device used for extruding the end part of the sample to be ground is arranged above the through hole in the rotating shaft, and an elastic device used for extruding the other end of the sample to be ground and resetting the sample to be ground is arranged below the through hole in the mounting frame.
2. The axial grinder for cylindrical rotating bending fatigue specimens as set forth in claim 1, wherein: the eccentric wheel device comprises an eccentric wheel connected to the rotating shaft and a rolling bearing sleeved on the outer side of the eccentric wheel.
3. The axial grinder for cylindrical rotating bending fatigue specimens as set forth in claim 2, wherein: the number of the through holes is two, the number of the eccentric wheels is two, the eccentric wheels correspond to the through holes one by one, and the axial directions of the two eccentric wheels are symmetrically arranged along the axial line of the rotating shaft.
4. The axial grinder for cylindrical rotating bending fatigue specimens as set forth in claim 1, wherein: the elastic device comprises a hollow installation cylinder arranged at the bottom of the installation frame, and a pressure spring is installed in a cavity of the installation cylinder.
5. The axial grinder for cylindrical rotating bending fatigue specimens as set forth in claim 1, wherein: bar abrasive paper mounting groove is including setting up the bar abrasive paper first mounting groove of the first bar abrasive paper installation of confession on fixed grinding piece and setting up the bar abrasive paper second mounting groove of the second bar abrasive paper installation of confession on the activity grinding piece to make first bar abrasive paper and second bar abrasive paper be located the both sides of waiting to grind the sample respectively.
6. The axial grinder for cylindrical rotating bending fatigue specimens as set forth in claim 1, wherein: the mounting bracket includes chassis and the adjustable shelf on upper portion, and fixed grinding block sets up on the chassis, and actuating mechanism sets up on the adjustable shelf, and the adjustable shelf can swing and set up on the chassis, is provided with the fixed knot who goes on fixing it when the adjustable shelf pendulum to operating position between chassis and the adjustable shelf.
7. The axial grinder for cylindrical rotating bending fatigue specimens as set forth in claim 6, wherein: the movable frame is connected to the bottom frame through a hinge, the fixed structure comprises a first connecting plate arranged on the movable frame and a second connecting plate arranged on the bottom frame and corresponding to the first connecting plate, and the first connecting plate and the second connecting plate are connected through a bolt.
8. The axial grinder for cylindrical rotating bending fatigue specimens according to any one of claims 1 to 7, wherein: a first pressing plate and a second pressing plate are movably sleeved on the connecting bolt, a pressure sensor is arranged between the first pressing plate and the second pressing plate, and a spring is sleeved on the connecting bolt part between the second pressing plate and the movable grinding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811391160.8A CN109333334B (en) | 2018-11-21 | 2018-11-21 | Axial grinding machine for cylindrical rotating bending fatigue test sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811391160.8A CN109333334B (en) | 2018-11-21 | 2018-11-21 | Axial grinding machine for cylindrical rotating bending fatigue test sample |
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| Publication Number | Publication Date |
|---|---|
| CN109333334A CN109333334A (en) | 2019-02-15 |
| CN109333334B true CN109333334B (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811391160.8A Active CN109333334B (en) | 2018-11-21 | 2018-11-21 | Axial grinding machine for cylindrical rotating bending fatigue test sample |
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| CN (1) | CN109333334B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5755615A (en) * | 1995-11-13 | 1998-05-26 | Toyota Jidosha Kabushiki Kaisha | Lapping apparatus |
| CN201427269Y (en) * | 2009-06-15 | 2010-03-24 | 邵峰 | Polisher for polished rods of pumping units |
| CN203509855U (en) * | 2013-07-30 | 2014-04-02 | 惠州申普实业有限公司 | Rough polishing tile for shaft part |
| CN207824973U (en) * | 2018-02-08 | 2018-09-07 | 天津璞臻科技有限公司 | A kind of traditional Chinese medicine timber-used shredding mechanism |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204748269U (en) * | 2015-05-11 | 2015-11-11 | 长葛市锐菱机械厂 | Steel bar rust remover |
| CN204748270U (en) * | 2015-05-16 | 2015-11-11 | 长葛市锐菱机械厂 | A steel bar derusting section of thick bamboo |
| CN207578155U (en) * | 2017-07-03 | 2018-07-06 | 山东天岳先进材料科技有限公司 | A kind of silicon carbide processing crystal bar grinding device |
-
2018
- 2018-11-21 CN CN201811391160.8A patent/CN109333334B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5755615A (en) * | 1995-11-13 | 1998-05-26 | Toyota Jidosha Kabushiki Kaisha | Lapping apparatus |
| CN201427269Y (en) * | 2009-06-15 | 2010-03-24 | 邵峰 | Polisher for polished rods of pumping units |
| CN203509855U (en) * | 2013-07-30 | 2014-04-02 | 惠州申普实业有限公司 | Rough polishing tile for shaft part |
| CN207824973U (en) * | 2018-02-08 | 2018-09-07 | 天津璞臻科技有限公司 | A kind of traditional Chinese medicine timber-used shredding mechanism |
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| Publication number | Publication date |
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| CN109333334A (en) | 2019-02-15 |
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