CN204253273U - Motor piston assemblies - Google Patents
Motor piston assemblies Download PDFInfo
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- CN204253273U CN204253273U CN201420741439.5U CN201420741439U CN204253273U CN 204253273 U CN204253273 U CN 204253273U CN 201420741439 U CN201420741439 U CN 201420741439U CN 204253273 U CN204253273 U CN 204253273U
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- plunger
- technique
- damping hole
- sphere
- piston assemblies
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Motor piston assemblies, comprise plunger and plunger ring, wherein, plunger at one end is provided with technique damping hole, and the other end is provided with technique fillet, and technique damping hole lower end is provided with oil duct damping hole, oil duct damping hole is communicated with plunger oil duct, and the periphery of technique damping hole is provided with plunger pressure-bearing sphere, be provided with technique protection cylindrical below plunger pressure-bearing sphere, technique protection cylindrical fills pressure ball face with plunger and is connected; Technique fillet periphery is provided with protection chamfering, and above protection chamfering, be provided with plunger revolving sphere, plunger ring is arranged in the plunger ring mounting groove of plunger revolving sphere side.The utility model possesses wear-resisting, corrosion-resistant and shock-resistant characteristic, and machining accuracy is high, not easily moves interference when coordinating drive with motor driving shaft ball-and-socket; According to given dimensional assembling between plunger assembly, not only reduce the noise that oil hydraulic motor runs, and ensure the transmission performance of each assembly, reduce regular maintenance expense, the working life of effective extended column plug assembly.
Description
Technical field
The utility model relates to hydraulic system and performs components and parts technical field, particularly relates to a kind of motor piston assemblies.
Background technique
In the work of inclined shaft plunger oil hydraulic motor, when hydraulic oil enters bottom cylinder body inner plunger through oil distribution casing, plunger outward is stretched out, tightly withstand the inwall of stator, because stator and cylinder body exist throw of eccentric, when plunger and stator contact, stator coupled columns is plugged with reaction force, and reaction force produces torque to cylinder body, it is mechanical energy that cylinder body is rotated the hydraulic energy transfer of hydraulic system.Plunger is in conversion process of energy, not only need to bear the load that hydraulic oil brings, motor driving shaft assembly to be met and cylinder body installs needs simultaneously, this has higher requirement to withstand voltage, corrosion-resistant, the shock-resistant characteristic of plunger and processing technology, and requires that plunger can not move interference when coordinating drive with motor driving shaft ball-and-socket; Carrying out in motor piston assemblies assembly process, fit up gap between each assembly and size are also equal important, and fit up gap is excessive, and the noise produced when oil hydraulic motor runs is large, not only cause environmental pollution, and affect the transmission performance between each assembly; Equipment gap is too small, directly causes oil hydraulic motor internal component to damage, easily breaks down.
Model utility content
The technical problem that the utility model solves is to provide a kind of motor piston assemblies, to solve the shortcoming in above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
Motor piston assemblies, comprise plunger and plunger ring, wherein, plunger at one end is provided with technique damping hole, and the other end is provided with technique fillet, and is provided with the oil duct damping hole for oil circuit buffering in technique damping hole lower end, oil duct damping hole is communicated with plunger oil duct, and the periphery of technique damping hole is provided with for coordinating with motor driving shaft ball-and-socket the plunger pressure-bearing sphere driven, be provided with technique protection cylindrical below plunger pressure-bearing sphere, technique protection cylindrical fills pressure ball face with plunger and is connected; Technique fillet periphery is provided with protection chamfering, it is the chamfering of plunger and cylinder body contact jaw, prevent plunger from driving process, producing interference, and as guiding during subsequent installation plunger ring, plunger revolving sphere is provided with above protection chamfering, plunger does rotation motion when being mechanical energy by hydraulic energy transfer around plunger revolving sphere center after loading cylinder body, and plunger ring is arranged in the plunger ring mounting groove of plunger revolving sphere side.
In the utility model, technique damping hole leaning angle is 60 °, in course of working, plunger at one end is the linear contact lay location of technique fillet, the other end is the contact location, face of technique damping hole, adopts the processing of Double ejection pin grinding machine need not other striking gears additional, guarantees the disposable processing completing all grinding faces, efficiently convenient, improve the precision of processing simultaneously.
In the utility model, plunger pressure-bearing sphere is spherical calotte, drives for coordinating with the ball-and-socket of motor driving shaft, there is higher tolerance of size and figure tolerance required precision, dimensional accuracy is-0.007mm ~-0.02mm, and accuracy to shape is 0.0035mm, and surface roughness is 0.4 μm.
In the utility model, plunger dress pressure ball face is spherical calotte, and after loading motor spindle ball-and-socket as plunger pressure-bearing land portions, platen locates use, and surface roughness is 0.4 μm.
In the utility model, plunger is also provided with technique circular arc, the transition conical surface and the protection conical surface, and the protection conical surface and technique circular sliding slopes, technique circular arc is connected with the transition conical surface, to coordinate with motor driving shaft ball-and-socket at plunger and driven protective action, prevent plunger from driving process, moving interference.
In the utility model, plunger ring is provided with plunger ring breach, is convenient to plunger ring cover and loads in plunger ring mounting groove.
In the utility model, the periphery of plunger ring is set to spherical calotte, and the width position center of the central position of sphere and plunger ring is not on the same line, is convenient to embed in plunger ring mounting groove.
In the utility model, the surface roughness of plunger revolving sphere is 0.4 μm.
Motor piston assemblies processing method, concrete steps are as follows:
1) body material is chosen, modified polishing bar selected by body material, double dynamical main shaft automatic lathe is adopted to process, obtain plunger cylinder, and Production development sampling observation detector is installed in double dynamical main shaft automatic lathe, detect critical size, to ensure the machining accuracy produced in batches, effectively control scrappage;
2) to step 1) in obtain plunger damaged surface carry out gas nitriding process, grinding front surface hardness is not less than 850HV0.2, depth of penetration 0.35 ~ 0.5mm;
3) by step 2) in carry out the plunger cylinder that gas nitriding is disposed, the positioning datum of abrasive process damping hole and technique fillet;
4) treat step 3) in abrasive process damping hole and technique fillet positioning datum after, adopt the disposable grinding of Double ejection pin to complete other each forming faces;
5) treat step 4) in after other each forming face grindings, grinding plunger pressure-bearing sphere, after grinding, hardness is not less than 700HV0.2, and depth of penetration is not less than 0.2mm;
6) to step 5) in the complete plunger cylinder of grinding plunger pressure-bearing sphere adopt heat energy mode to remove burr;
7) to step 6) in remove the complete plunger cylinder of burr and carry out sampling Detection, sampling observation rate is not less than 5%, and sample detection be entirely examine;
8) the qualified plunger ring of detection is set on plunger and forms plunger assembly, and shrinkage treatment is carried out to composition plunger assembly;
9) to step 8) in the complete plunger assembly of shrinkage treatment carry out cleaning corrosion protection degaussing process;
10) to step 9) in carry out cleaning plunger assembly outward appearance that corrosion protection degaussing is disposed detect qualified after, encapsulation warehouse-in.
In the utility model, step 8) in shrinkage treatment is carried out, its axial clearance 0.04mm ~ 0.07mm to composition plunger assembly, radial-play amount is not less than 0.5mm.
Beneficial effect: the utility model possesses wear-resisting, corrosion-resistant and shock-resistant characteristic, and machining accuracy is high, can meet motor driving shaft assembly and cylinder body installs needs, and plunger not easily moves interference when coordinating drive with motor driving shaft ball-and-socket; Assemble according to set fit up gap and size between plunger assembly, not only reduce the noise produced when oil hydraulic motor runs, and the transmission performance of each assembly can be ensured, reduce regular maintenance expense, the working life of effective extended column plug assembly.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of preferred embodiment of the present utility model.
Fig. 2 is the plunger sectional view in preferred embodiment of the present utility model.
Fig. 3 is X place sectional view in Fig. 2.
Fig. 4 is Y place sectional view in Fig. 2.
Fig. 5 is Z place sectional view in Fig. 2.
Fig. 6 is the plunger ring plan view in preferred embodiment of the present utility model.
Fig. 7 is U place sectional view in Fig. 6.
Fig. 8 is the plunger ring right elevation in preferred embodiment of the present utility model.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
See the motor piston assemblies of Fig. 1 ~ Fig. 8, comprise plunger 1, plunger pressure-bearing sphere 1-1, plunger dress pressure ball face 1-2, plunger oil duct 1-3, protection chamfering 1-4, technique fillet 1-5, plunger revolving sphere 1-6, plunger ring mounting groove 1-7, technique protection cylindrical 1-8, oil duct damping hole 1-9, technique damping hole 1-10, technique circular arc 1-11, transition conical surface 1-12, protection conical surface 1-13, plunger ring 2, plunger ring breach 2-1 and plunger ring outer spherical surface 2-2.
In the present embodiment, the plunger pressure-bearing sphere 1-1 that plunger 1 is arranged is spherical calotte, drive for coordinating with the ball-and-socket of motor driving shaft, there is higher tolerance of size and figure tolerance required precision, plunger dress pressure ball face 1-2 is also spherical calotte, after loading motor spindle ball-and-socket as plunger pressure-bearing sphere 1-1 part, platen location is used, plunger oil duct 1-3 is used for that the pressure oil of this end of plunger cylinder is transported to plunger pressure-bearing sphere 1-1 and holds, and be provided with oil duct damping hole 1-9 and carry out oil circuit buffering, protection chamfering 1-4 is the chamfering of plunger and cylinder body contact jaw, prevent plunger 1 from driving process, producing interference, and as guiding during subsequent installation plunger ring 2, thimble location when technique fillet 1-5 is fine finishing grinding, the technique damping hole 1-10 of the other end location employing 60 ° locates, one end is the linear contact lay location of technique fillet 1-5, one end is the contact location, face of technique damping hole 1-10, adopt the processing of Double ejection pin grinding machine need not other striking gears additional, guarantee the disposable processing completing all grinding faces, plunger revolving sphere 1-6 is similarly spherical calotte, rotation motion is done when being mechanical energy by hydraulic energy transfer around this sphere centre after plunger 1 loads cylinder body, plunger ring mounting groove 1-7 is the groove of erection column plug ring 2, technique protection cylindrical 1-8 is the technique cylindrical that countershaft captures in machining process, in addition, plunger 1 is also provided with technique circular arc 1-11, transition conical surface 1-12 and protection conical surface 1-13, play protective action, prevent plunger 1 from driving process, moving interference, plunger ring 2 is provided with plunger ring breach 2-1, be convenient to cover and load plunger ring mounting groove 1-7, the periphery of plunger ring 2 is set to spherical calotte, the central position of sphere and the width position center of plunger ring 2 are not on one wire, and the distance of From Left is D, the distance on distance the right is C, and the width of plunger ring 2 is D+C.
In the present embodiment, this plunger assembly need possess the characteristics such as wear-resisting, corrosion-resistant and shock-resistant, and according to actual needs, part-structure needs higher machining accuracy, the dimension precision requirement of plunger pressure-bearing sphere 1-1 is-0.007mm ~-0.02mm, and accuracy to shape is 0.0035mm; The surface roughness of plunger pressure-bearing sphere 1-1, plunger dress pressure ball face 1-2 and plunger revolving sphere 1-6 is 0.4 μm, and all the other body structure surfaces are the requirement of machining requirements IT6 class precision.
In the present embodiment, motor piston assemblies processing method, concrete steps are as follows:
1) body material is chosen, modified polishing bar selected by body material, double dynamical main shaft automatic lathe is adopted to process, obtain plunger cylinder, and Production development sampling observation detector is installed in double dynamical main shaft automatic lathe, detect critical size, to ensure the machining accuracy produced in batches, effectively control scrappage;
2) to step 1) in obtain plunger damaged surface carry out gas nitriding process, grinding front surface hardness is not less than 850HV0.2, depth of penetration 0.4 ~ 0.5mm;
3) by step 2) in carry out the plunger cylinder that gas nitriding is disposed, the positioning datum of abrasive process damping hole 1-10 and technique fillet 1-5;
4) treat step 3) in abrasive process damping hole 1-10 and technique fillet 1-5 positioning datum after, adopt Double ejection pin disposable grinding to complete other each forming faces;
5) treat step 4) in after other each forming face grindings, grinding plunger pressure-bearing sphere 1-1, after grinding, hardness is not less than 700HV0.2, and depth of penetration is not less than 0.2mm;
6) to step 5) in the complete plunger cylinder of grinding plunger pressure-bearing sphere 1-1 adopt heat energy mode to remove burr;
7) to step 6) in remove the complete plunger cylinder of burr and carry out sampling Detection, sampling observation rate is not less than 5%, and sample detection be entirely examine;
8) the qualified plunger ring 2 of detection is set on plunger 1 and forms plunger assembly, shrinkage treatment is carried out to composition plunger assembly;
9) to step 8) in the complete plunger assembly of shrinkage treatment carry out cleaning corrosion protection degaussing process;
10) to step 9) in carry out cleaning plunger assembly outward appearance that corrosion protection degaussing is disposed detect qualified after, encapsulation warehouse-in.
In the present embodiment, step 8) in shrinkage treatment is carried out, its axial clearance 0.04mm ~ 0.07mm to composition plunger assembly, radial-play amount is not less than 0.5mm.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1. motor piston assemblies, comprise plunger and plunger ring, it is characterized in that, plunger at one end is provided with technique damping hole, and the other end is provided with technique fillet, and is provided with the oil duct damping hole for oil circuit buffering in technique damping hole lower end, oil duct damping hole is communicated with plunger oil duct, and the periphery of technique damping hole is provided with for coordinating with motor driving shaft ball-and-socket the plunger pressure-bearing sphere driven, be provided with technique protection cylindrical below plunger pressure-bearing sphere, technique protection cylindrical fills pressure ball face with plunger and is connected; Technique fillet periphery is provided with protection chamfering, and above protection chamfering, be provided with plunger revolving sphere, plunger ring is arranged in the plunger ring mounting groove of plunger revolving sphere side.
2. motor piston assemblies according to claim 1, is characterized in that, technique damping hole leaning angle is 60 °.
3. motor piston assemblies according to claim 1, is characterized in that, plunger pressure-bearing sphere is spherical calotte, and dimensional accuracy is-0.007mm ~-0.02mm, and accuracy to shape is 0.0035mm, and surface roughness is 0.4 μm.
4. motor piston assemblies according to claim 1, is characterized in that, plunger dress pressure ball face is spherical calotte, and surface roughness is 0.4 μm.
5. motor piston assemblies according to claim 1, is characterized in that, plunger is also provided with technique circular arc, the transition conical surface and the protection conical surface, and the protection conical surface and technique circular sliding slopes, technique circular arc is connected with the transition conical surface.
6. motor piston assemblies according to claim 1, is characterized in that, plunger ring is provided with plunger ring breach.
7. motor piston assemblies according to claim 1, is characterized in that, the periphery of plunger ring is set to spherical calotte, and the width position center of the central position of sphere and plunger ring is not on the same line.
8. motor piston assemblies according to claim 1, is characterized in that, the surface roughness of plunger revolving sphere is 0.4 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741439.5U CN204253273U (en) | 2014-11-29 | 2014-11-29 | Motor piston assemblies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741439.5U CN204253273U (en) | 2014-11-29 | 2014-11-29 | Motor piston assemblies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204253273U true CN204253273U (en) | 2015-04-08 |
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ID=52957590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420741439.5U Expired - Fee Related CN204253273U (en) | 2014-11-29 | 2014-11-29 | Motor piston assemblies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204253273U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454328A (en) * | 2014-11-29 | 2015-03-25 | 南京萨伯工业设计研究院有限公司 | Motor plunger component and machining method thereof |
-
2014
- 2014-11-29 CN CN201420741439.5U patent/CN204253273U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454328A (en) * | 2014-11-29 | 2015-03-25 | 南京萨伯工业设计研究院有限公司 | Motor plunger component and machining method thereof |
| CN104454328B (en) * | 2014-11-29 | 2017-02-22 | 南京萨伯工业设计研究院有限公司 | Motor plunger component and machining method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20161129 |