CN208391722U - Lapping machine - Google Patents
Lapping machine Download PDFInfo
- Publication number
- CN208391722U CN208391722U CN201820665648.4U CN201820665648U CN208391722U CN 208391722 U CN208391722 U CN 208391722U CN 201820665648 U CN201820665648 U CN 201820665648U CN 208391722 U CN208391722 U CN 208391722U
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- abrasive disk
- lapping machine
- belt
- main shaft
- belt pulley
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Abstract
The utility model is a kind of vibration milling apparatus, belongs to valve field, is mainly used for the grinding of valve sealing face.Lapping machine is mainly made of motor (1), belt pulley (2,4), belt (3), main shaft (5), bearing (6), eccentric rod (7), spring stop piece (8) and abrasive disk (9).Main operational principle is that motor drives belt pulley (2) rotation, belt pulley (4) and main shaft (5) is driven to rotate under certain rotating ratio by belt (3), main shaft drives eccentric rod (7) to rotate together, abrasive disk is set to generate the vibration of horizontal direction and circumferencial direction, to make the part being placed on abrasive disk generate rotation and revolution, grinding movement is realized.The lapping machine structure is simple, and vibration amplitude and vibration frequency can be adjusted, suitable for grinding the valve of the flat seals such as gate valve, shut-off valve pair.
Description
Technical field
The utility model relates to a kind of vibration milling apparatus, belong to valve field.
Background technique
Grinding is to guarantee the important means of valve sealing face surface roughness, and valve seal surface roughness is usually 0.1, machine
Oil (gas) filling device not can guarantee, therefore usually after the completion of valve sealing face machine adds, it needs to carry out grinding process.
Milling apparatus on the market is mainly star lapping machine and rocker-arm eccentric rotary grinder at present.Its abrasive disk is all
Rotation or revolution motion are done, structure is relative complex, and power consumption is larger.The structure of this milling apparatus is relatively easy, and abrasive disk is only
The vibration for doing circumference and horizontal direction drives the part being placed on abrasive disk to generate rotation and revolution, realizes grinding by shaking
Movement.
Summary of the invention
Lapping machine described in the utility model mainly by motor (1), belt pulley (2,4), belt (3), main shaft (5),
Bearing (6), eccentric rod (7), spring stop piece (8) and abrasive disk (9) composition.Main operational principle is that motor drives belt pulley (2)
Rotation drives belt pulley (4) and main shaft (5) to rotate by belt (3) under certain rotating ratio, and main shaft drives eccentric rod (7) one
Rotation is played, abrasive disk is made to generate the vibration of horizontal direction and circumferencial direction, so that the part being placed on abrasive disk be made to generate rotation
And revolution, realize grinding movement.
Lap tool and the direction of workpiece relative motion are constantly changed, and the continuous variation of the direction of motion makes each abrasive grain will not be in work
Oneself motion profile is repeated on part surface, in order to avoid cause apparent polishing scratch and reduce the finish of workpiece.In addition, the direction of motion
Continuous variation to be also distributed grinding agent relatively uniform, so that more uniform cut workpiece surface metal;
Roughness after sealing surface grinding meets drawing requirement, according to the difference of material and the difference of milling time, generally
Between 0.1-0.2;
Motor selects three-phase asynchronous Ac motor, and frequency and revolving speed are adjustable;
There are a stable drive ratios for two belt pulleys, it is therefore an objective to reduce motor speed;
Main axis drives eccentric rod rotation, and the size and location of eccentric rod can be adjusted, to change abrasive disk
Amplitude of vibration size.Eccentric rod is heavier, and eccentric rod is remoter apart from main shaft, and the amplitude of vibration of abrasive disk is bigger;
The flexible deformation of spring stop piece can be exchanged into the amplitude of vibration of abrasive disk, while play the role of protecting abrasive disk;
Abrasive disk selects gray cast iron, containing flake graphite, so wearability and lubricity are preferable, suitable for finely grinding
Mill, using the cast iron of the pearlitic structrure of hardness HB120-220, effect is good.
Detailed description of the invention
It is the structural schematic diagram of lapping machine as shown in Figure 1
In Fig. 1,1. motors, 2. belt pulleys, 3. belts, 4. belt pulleys, 5. main shafts, 6. bearings, 7. eccentric rods, 8. springs
Baffle, 9. abrasive disks
Specific embodiment
The grinding range of abrasive disk is the flat seal pair within DN10-DN300, mainly includes gate valve flap, valve seat, cuts
Only valve flap etc..
Grinding rate is usually 10-150 ms/min.
Grinding pressure calculates as follows:
P=P0NS
Wherein: P-- gross pressure (Kgf)
The parts count (a) that N-- is ground every time
P0-- unit pressure P0, generally take 0.1--3 kilograms per centimeter2
The each part real contact area of S-- (centimetre2)
Grinding efficiency is improved with the increase of grinding pressure.After grinding pressure increases, abrasive grain incision workpiece surface is deeper, cuts
The metal layer removed is also thicker.But grinding pressure cannot be excessive, otherwise can generate the excessively high phenomenon of cutting heat.Pressure can be big when slightly grinding
A bit, it is answered when lappingout smaller.
Operating method and points for attention:
1) lapping machine is first cleared up before grinding, it is ensured that the pollutants such as free from dust, iron filings on abrasive disk.
2) the defects of sealing surface of inspection workpiece, sealing surface is not allow for apparent tool marks, collides with.
3) abrasive pastes are uniformly smeared on abrasive disk.
4) workpiece is uniformly placed on abrasive disk.Make abrasive disk uniform force as far as possible when placing workpiece, in order to avoid influence
Vibrating effect.
5) workpiece being freely placed on abrasive disk is very brief because producing between the inertia of its own and the abrasive disk of vibration
Opposite sliding, to play the effect of grinding.
6) abrasive pastes for remaining in workpiece surface are wiped clean with cotton after workpiece grinding, check whether sealing surface grinding reaches
It is required that.Otherwise continue to grind.
Claims (5)
1. lapping machine, it is characterised in that: it includes motor (1), belt pulley (2,4), belt (3), main shaft (5), bearing
(6), eccentric rod (7), spring stop piece (8) and abrasive disk (9) composition;Main operational principle is that motor drives belt pulley (2) rotation,
Belt pulley (4) and main shaft (5) is driven to rotate under certain rotating ratio by belt (3), main shaft drives eccentric rod (7) to turn together
It is dynamic, so that abrasive disk is generated the vibration of horizontal direction and circumferencial direction, so that the part being placed on abrasive disk be made to generate rotation and public affairs
Turn, realizes grinding movement.
2. lapping machine according to claim 1, it is characterised in that: motor selects three-phase asynchronous Ac motor.
3. lapping machine according to claim 1, it is characterised in that: there are a stable drive ratios for two belt pulleys.
4. lapping machine according to claim 1, it is characterised in that: main axis drives eccentric rod rotation.
5. lapping machine according to claim 1, it is characterised in that: abrasive disk selects gray cast iron, contains sheet stone
Ink is suitable for fine gtinding, using the cast iron of the pearlitic structrure of hardness HB120-220.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201820665648.4U CN208391722U (en) | 2018-04-28 | 2018-04-28 | Lapping machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201820665648.4U CN208391722U (en) | 2018-04-28 | 2018-04-28 | Lapping machine |
Publications (1)
Publication Number | Publication Date |
---|---|
CN208391722U true CN208391722U (en) | 2019-01-18 |
Family
ID=65061954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201820665648.4U Active CN208391722U (en) | 2018-04-28 | 2018-04-28 | Lapping machine |
Country Status (1)
Country | Link |
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CN (1) | CN208391722U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109794826A (en) * | 2018-04-28 | 2019-05-24 | 哈电集团哈尔滨电站阀门有限公司 | Lapping machine |
CN109822429A (en) * | 2019-04-08 | 2019-05-31 | 中国石油大学(华东) | It is used to prepare the vibratory finishing machine of metal electron back scattering diffraction sample |
-
2018
- 2018-04-28 CN CN201820665648.4U patent/CN208391722U/en active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109794826A (en) * | 2018-04-28 | 2019-05-24 | 哈电集团哈尔滨电站阀门有限公司 | Lapping machine |
CN109822429A (en) * | 2019-04-08 | 2019-05-31 | 中国石油大学(华东) | It is used to prepare the vibratory finishing machine of metal electron back scattering diffraction sample |
CN109822429B (en) * | 2019-04-08 | 2020-03-06 | 中国石油大学(华东) | Vibration polishing machine for preparing metal electron back scattering diffraction sample |
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