CN210147734U - Device for polishing 45-degree parting O-shaped rubber sealing ring mold - Google Patents
Device for polishing 45-degree parting O-shaped rubber sealing ring mold Download PDFInfo
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- CN210147734U CN210147734U CN201920709616.4U CN201920709616U CN210147734U CN 210147734 U CN210147734 U CN 210147734U CN 201920709616 U CN201920709616 U CN 201920709616U CN 210147734 U CN210147734 U CN 210147734U
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Abstract
The utility model relates to a device for polishing a 45-degree parting O-shaped rubber sealing ring mold, which comprises a workpiece clamping driving mechanism, a workpiece translation positioning mechanism, a grinding magnetic pole group and a magnetic pole clamping self-rotating mechanism; the workpiece clamping driving mechanism is fixed on the workpiece translation positioning mechanism, and the workpiece translation positioning mechanism drives the workpiece clamping driving mechanism to move in a cross manner on a horizontal plane; the grinding magnetic pole group is arranged above the workpiece clamping driving mechanism, the magnetic pole clamping self-rotating mechanism is fixedly connected with the grinding magnetic pole group and drives the grinding magnetic pole group to rotate, and the grinding magnetic pole group grinds and polishes the inner surface of the workpiece. The advantages are that: the utility model discloses a magnetic grinding method has better flexibility and adaptability to 45O shape rubber seal mould polishing of parting, has guaranteed higher size precision and shape precision. The grinding magnetic pole group is provided with a groove on the surface of one end of the magnetic gathering head, so that the driving force of the magnetic grinding material rotating along with the magnetic pole group is increased.
Description
Technical Field
The utility model belongs to the technical field of the part polishing, especially, relate to a 45 devices of somatotype O shape rubber seal ring mould of polishing.
Background
The O-shaped rubber sealing ring (hereinafter referred to as O-shaped sealing ring) is the most basic sealing element, has wide application range, and is widely applied to machine tools, ships, automobiles, various instruments and meters and aerospace equipment. O-rings are annular rubber seals with a circular cross-section that are used primarily at specified temperatures, pressures, and in various liquid and gaseous media, and that seal at rest or in motion. The parting surface of the die can be divided into two types of 180-degree parting and 45-degree parting. The 180 deg. split O-ring is typically used for static seals and the 45 deg. split O-ring is typically used for dynamic seals (reciprocating and rotary seals). The end face seal of a spring loading or magnetic loading device for lubricating oil seal at the shaft end of a transmission casing of an aircraft engine and an aircraft accessory usually adopts an O-shaped sealing ring, and is manufactured by adopting 45-degree parting because most of the O-shaped sealing rings are dynamic seals. The performance of the seal and the reliability of the sealing system are important to the mechanical performance, while the surface quality of the seal ring depends to a large extent on the surface quality of the seal ring mould. The O-shaped sealing ring mold has small cavity size and is circumferentially distributed on the surface of a cone, the O-shaped sealing ring mold is of an inner annular groove structure, the surface of the cavity is difficult to process, the quality requirement is high, and the O-shaped sealing ring mold is difficult to realize by using a traditional mechanical polishing processing method.
Disclosure of Invention
For overcoming the not enough of prior art, the utility model aims at providing a rational in infrastructure is used for polishing 45 somatotype O shape rubber seal ring mould's device realizes reaching the die cavity roughness designing requirement to polishing 45 somatotype O shape rubber seal ring mould's lower mould spill die cavity surface finish.
In order to achieve the above object, the utility model discloses a following technical scheme realizes:
a device for polishing a 45-degree parting O-shaped rubber sealing ring mold comprises a workpiece clamping driving mechanism, a workpiece translation positioning mechanism, a grinding magnetic pole group and a magnetic pole clamping self-rotating mechanism;
the workpiece clamping driving mechanism is fixed on the workpiece translation positioning mechanism, and the workpiece translation positioning mechanism drives the workpiece clamping driving mechanism to move in a cross manner on a horizontal plane; the grinding magnetic pole group is arranged above the workpiece clamping driving mechanism, the magnetic pole clamping self-rotating mechanism is fixedly connected with the grinding magnetic pole group and drives the grinding magnetic pole group to rotate, and the grinding magnetic pole group grinds and polishes the inner surface of the workpiece;
the grinding magnetic pole group comprises a magnetic pole fixing connecting rod, a cylindrical axial permanent magnetic pole and a magnetic gathering head, wherein the upper end of the cylindrical axial permanent magnetic pole is fixed on the magnetic pole fixing connecting rod through magnetic attraction, the lower end of the cylindrical axial permanent magnetic pole fixes the magnetic gathering head through the magnetic attraction, the magnetic pole fixing connecting rod is of a cylindrical structure with a bending angle, and the bending angle between the upper portion and the lower portion of the magnetic pole fixing connecting rod is 95-170 degrees.
The workpiece translation positioning mechanism comprises a longitudinal moving platform and a transverse moving platform, the longitudinal moving platform is fixed on a foundation, and the transverse moving platform is arranged on the longitudinal moving platform; the longitudinal moving platform and the transverse moving platform are the same in structure and respectively comprise a fixed plate and a moving plate, the fixed plate and the moving plate are in sliding connection through a dovetail groove, a nut is arranged on the fixed plate, threads matched with the nut are arranged at the bottom of the moving plate, the nut is connected with an adjusting hand wheel, and the adjusting hand wheel drives the nut to rotate to drive the moving plate to move on the fixed plate along the dovetail groove; the fixed plate of the transverse moving platform is vertically and fixedly connected with the moving plate of the longitudinal moving platform.
The workpiece clamping driving mechanism comprises a workpiece rotating motor, an elastic pin coupler, a reduction gearbox, a three-jaw chuck and a fixed base plate, wherein the workpiece rotating motor is connected with an input shaft of the reduction gearbox through the elastic pin coupler, an output shaft of the reduction gearbox is connected with the three-jaw chuck, and the workpiece rotating motor and the reduction gearbox are fixed on the workpiece translation positioning mechanism through the fixed base plate.
The magnetic pole clamping self-rotating mechanism comprises an upright drill and a three-jaw chuck, wherein the bottom of a working shaft of the upright drill is connected with the three-jaw chuck, and the three-jaw chuck clamps a magnetic pole fixing connecting rod.
The magnetic pole fixing connecting rods are more than 2 magnetic pole fixing connecting rods with different bending angles; the cylindrical axial permanent magnet poles are more than 2 cylindrical axial permanent magnet poles with different magnetic field strengths.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a magnetic grinding method is to 45 somatotype O shape rubber seal ring mould polishing, especially can have better flexibility and adaptability to its die cavity internal surface polishing, has guaranteed higher size precision and shape precision. The grinding magnetic pole group can obtain different polishing pressures by replacing cylindrical axial permanent magnetic poles with different strengths, and workpieces with different sizes can be polished by replacing magnetic pole fixing connecting rods with different shapes; the surface of one end of the magnetic gathering head is provided with a groove, so that a magnetic field in a workpiece processing area forms a magnetic field gradient, and the magnetic acting force generated by the change of the strength of the circumferential magnetic field of the magnetic gathering head increases the driving force of the magnetic grinding material rotating along with the magnetic pole group; by utilizing the principle of magnetic grinding, grinding particles grind the surface in the concave cavity like a magnetic brush, and the grinding particles are in flexible contact with the surface of a workpiece, so that the surface appearance of the workpiece is not damaged, and the shape precision of the workpiece is not changed; after the concave cavity of the die is ground, the roughness is obviously reduced, the inner surface of the concave cavity is uniform and smooth, and the surface of the concave cavity after magnetic grinding has residual compressive stress, so that the fatigue resistance of the surface of the concave cavity can be improved, the service life of the surface of the concave cavity can be prolonged, and the requirement which is difficult to achieve by a traditional mechanical polishing method can be met.
The workpiece translation positioning mechanism can realize accurate positioning of the workpiece clamping driving mechanism, so that the workpiece is accurately positioned, and the workpiece and the upper part of the magnetic pole fixing connecting rod are positioned on the same axis by utilizing an adjusting hand wheel and a dovetail groove; the magnetic pole clamping self-rotating mechanism is transformed by adopting the working structure of the vertical drilling machine, is convenient to manufacture, and saves the research and development time.
Drawings
Fig. 1 is a front view of an apparatus for polishing a 45 ° split O-ring rubber seal mold.
Fig. 2 is a side view of an apparatus for polishing a 45 deg. split O-ring rubber seal mold.
Fig. 3 is a cross-sectional view of the processing area.
Fig. 4 is an enlarged view of a portion a of fig. 3.
FIG. 5 is a schematic diagram of a structure of a ground pole group.
FIG. 6 is an isometric view of a workpiece.
Fig. 7 is a cross-sectional view of a workpiece.
FIG. 8 is a graph of the original surface topography of a workpiece.
Figure 9 is a surface topography map of a workpiece after finish grinding.
FIG. 10 is a surface topography map of a workpiece after superfinishing.
In the figure: the method comprises the steps of 1-locking a screw rod 2-locking a nut 3-three-jaw chuck 4-grinding a magnetic pole group 5-a workpiece 6-a three-jaw chuck 7-an elastic pin coupler 8-a workpiece rotating motor 9-a transverse moving platform 10-a lifting rocking handle I11-a reduction box 12-a lifting rocking handle II 13-a transverse adjusting hand wheel 14-a magnetic pole rotating motor 15-a gear lever 16-a start-stop button 17-a longitudinal adjusting hand wheel 18-a longitudinal moving platform 19-an upright post 20-a magnetic pole fixing connecting rod 21-a cylindrical axial permanent magnetic pole 22-a magnetic head.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.
Referring to fig. 1 and 2, the device for polishing a 45-degree parting O-shaped rubber seal ring mold comprises a workpiece 5 clamping driving mechanism, a workpiece 5 translation positioning mechanism, a grinding magnetic pole group 4 and a magnetic pole clamping self-rotating mechanism;
the workpiece 5 clamping driving mechanism is fixed on the workpiece 5 translation positioning mechanism, and the workpiece 5 translation positioning mechanism drives the workpiece 5 clamping driving mechanism to move in a cross manner on a horizontal plane; the grinding magnetic pole group 4 is arranged above the clamping driving mechanism of the workpiece 5, the magnetic pole clamping self-rotating mechanism is fixedly connected with the grinding magnetic pole group 4 and drives the grinding magnetic pole group 4 to rotate, and the grinding magnetic pole group 4 grinds and polishes the inner surface of the workpiece 5;
referring to fig. 3-5, the grinding magnetic pole group 4 includes a magnetic pole fixing connecting rod 20, a cylindrical axial permanent magnetic pole 21, and a magnetic gathering head 22, wherein the upper end of the cylindrical axial permanent magnetic pole 21 is fixed on the magnetic pole fixing connecting rod 20 through a magnetic attraction, and the lower end of the cylindrical axial permanent magnetic pole fixes the magnetic gathering head 22 through a magnetic attraction, the magnetic pole fixing connecting rod 20 is a cylindrical structure with a bending angle, and the bending angle between the upper part and the lower part of the magnetic pole fixing connecting rod 20 is 95-170 °. The magnetic pole fixing connecting rod 20 is more than 2 magnetic pole fixing connecting rods 20 with different bending angles; the cylindrical axial permanent magnet poles 21 are more than 2 cylindrical axial permanent magnet poles 21 with different magnetic field strengths, so that the cylindrical axial permanent magnet poles 21 can be conveniently replaced during polishing. On the premise of ensuring the processing distance, the workpiece 5 and the grinding magnetic pole group 4 are on the same rotation axis, an induction magnetic field exists between the magnetic gathering head 22 and the cavity of the workpiece 5, the grinding materials are gathered into a copying magnetic brush under the action of the magnetic field, and the magnetic brush repeatedly scratches the surface of the workpiece 5 to perform polishing processing in the high-speed relative rotation process of the workpiece 5 and the grinding magnetic pole group 4.
Referring to fig. 1 and 2, the workpiece 5 translation positioning mechanism comprises a longitudinal moving platform 18 and a transverse moving platform 9, the longitudinal moving platform 18 is fixed on a base, and the transverse moving platform 9 is arranged on the longitudinal moving platform 18; the longitudinal moving platform 18 and the transverse moving platform 9 are identical in structure and respectively comprise a fixed plate and a moving plate, the fixed plate and the moving plate are in sliding connection through a dovetail groove, a nut is arranged on the fixed plate, threads matched with the nut are arranged at the bottom of the moving plate, the nut is connected with an adjusting hand wheel, and the adjusting hand wheel drives the nut to rotate to drive the moving plate to move on the fixed plate along the dovetail groove; the fixed plate of the transverse moving platform 9 is vertically and fixedly connected with the moving plate of the longitudinal moving platform 18. The fixed plate of the longitudinal moving platform 18 is fixed on the foundation, can not move freely, and bears the weight of the whole device.
Referring to fig. 1 and 2, the workpiece 5 clamping driving mechanism comprises a workpiece rotating motor 8, an elastic pin coupler 7, a reduction gearbox 11, a three-jaw chuck 6 and a fixed base plate, wherein the workpiece rotating motor 8 is connected with an input shaft of the reduction gearbox 11 through the elastic pin coupler 7, an output shaft of the reduction gearbox 11 is connected with the three-jaw chuck 6, and the workpiece rotating motor 8 and the reduction gearbox 11 are fixed on the workpiece 5 translation positioning mechanism through the fixed base plate.
The magnetic pole clamping self-rotating mechanism comprises an upright drill and a three-jaw chuck 3, the bottom of a working shaft of the upright drill is connected with the three-jaw chuck 3, and the three-jaw chuck 3 clamps a magnetic pole fixing connecting rod 20. The vertical drilling machine can be modified, a magnetic pole rotating motor 14 (a three-phase asynchronous motor), a gear shift lever 15, a three-jaw chuck 3, a lifting rocking handle I10, a locking nut 2 and a locking screw rod 1 are mainly utilized, the three-jaw chuck 3 is used for clamping and grinding a magnetic pole group 4, the magnetic pole rotating motor 14 drives the three-jaw chuck 3 to rotate through a gearbox, and the rotating speed of the three-jaw chuck is adjusted through the gear shift lever 15. The start-stop button 16 is used to control the start and stop of the pole rotating motor 14. The gear is meshed with a rack fixed on a vertical column 19 of the vertical drilling machine, and the lifting rocking handle I10 is rotated to drive the gear connected with the lifting rocking handle I, so that the purpose of adjusting the height of the three-jaw chuck 3 is achieved. The same transmission mechanism is adopted on the workpiece 5 clamping driving mechanism, the second lifting rocking handle 12 on the workpiece 5 clamping driving mechanism is rotated, and the height of the three-jaw chuck 6 is adjusted. The locking nut 2 and the locking screw rod 1 fixed on the three-jaw chuck 3 form a threaded connection, the locking screw rod 1 penetrates through a fixed baffle plate on the machine frame, and the position of the three-jaw chuck 3 can be locked by adjusting the locking nut 2.
The workpiece 5 clamping driving mechanism is fixed on the transverse moving platform 9, the workpiece 5 is clamped on the workpiece 5 clamping driving mechanism, the grinding magnetic pole group 4 is fixed on the magnetic pole clamping self-rotating mechanism, the workpiece 5 and the grinding magnetic pole group 4 are on the same axis by adjusting the workpiece 5 translation positioning mechanism, the upper and lower positions of the magnetic pole clamping self-rotating mechanism are adjusted, the magnetic gathering head 22 at the head of the grinding magnetic pole group 4 is enabled to be over against the cavity groove of the workpiece 5, a grinding gap of 2-3mm is kept, the workpiece 5 and the grinding magnetic pole group 4 are enabled to reversely rotate at a certain speed respectively, abrasive materials adsorbed by the magnetic gathering head 22 and the cavity surface of the workpiece 5 are enabled to generate relative scratching, and accordingly, the inner surface finishing processing of the cavity of the workpiece 5 is achieved.
A method for polishing a 45-degree parting O-shaped rubber sealing ring mold comprises the following steps:
1) clamping a workpiece 5 by a three-jaw chuck 6, clamping a grinding magnetic pole group 4 with a slot on the end surface by a three-jaw chuck 3, adjusting a translation positioning mechanism of the workpiece 5 to enable the workpiece 5 and the upper part of a magnetic pole fixing connecting rod 20 of the grinding magnetic pole group 4 to be on the same axis, keeping a grinding gap of 2-3mm, and adding an oily grinding fluid and ferromagnetic grinding particles;
2) starting a workpiece rotating motor 8 (a single-phase variable frequency speed regulating motor), wherein the workpiece rotating motor 8 drives the three-jaw chuck 6 to rotate in the forward direction, and further drives the workpiece 5 to rotate in the forward direction; the three-jaw chuck 3 drives the grinding magnetic pole group 4 to rotate reversely under the driving of the vertical drilling machine, the magnetic grinding materials adsorbed at the end part of the grinding magnetic pole group generate relative scratching with the surface of the cavity of the workpiece 5, and the workpiece 5 is made of die steel, so that the workpiece 5 has magnetic conductivity, the surface of the cavity of the workpiece 5 is slightly magnetized in the process of contacting the magnetic grinding materials, and a part of the grinding materials contacting the surface of the workpiece 5 is adsorbed on the surface of the workpiece 5, thereby increasing the grinding pressure; and finally, taking down the workpiece 5, cleaning and drying.
In the polishing process, adding oily grinding liquid and ferromagnetic grinding particles with the granularity of less than 80 meshes between the magnetic head 22 and the processed surface of the workpiece 5, then reversely rotating the workpiece 5 and the grinding magnetic pole group 4 for 30-50min, and injecting the oily grinding liquid into a processing area once every 10-15min, wherein the ferromagnetic grinding particles can also be added;
ferromagnetic grinding particles with the granularity of less than 100 meshes are replaced, the vertical drilling machine and the workpiece rotating motor 8 are started, the workpiece 5 and the grinding magnetic pole group 4 rotate reversely, the processing time is 30-50min, once oily grinding fluid is injected into a processing area at intervals of 10-15min, and at the moment, the ferromagnetic grinding particles can also be added in a supplementing manner.
Examples
The power of a magnetic pole rotating motor is 500W, the power of a workpiece rotating motor is 8W, the magnetic induction intensity of a cylindrical axial permanent magnet pole 21 is 100mT, the material of a polished lower die is Q235, the shape is shown in figures 6 and 7, and the original surface appearance of the workpiece 5 is measured by a coarse super-depth-of-field 3D microscope before polishing, as shown in figure 8.
When the lower die of the 45-degree parting O-shaped rubber sealing ring die is polished:
1) card installation: clamping a lower die on a three-jaw chuck 6 of a clamping driving mechanism of a workpiece 5, splicing a grinding magnetic pole group 4, clamping the grinding magnetic pole group on a three-jaw chuck 3, and rotating a transverse adjusting hand wheel 13 and a longitudinal adjusting hand wheel 17 of a translation positioning mechanism of the workpiece 5 to enable the lower die and the grinding magnetic pole group 4 to be on the same rotation axis;
2) height adjustment: slowly shaking the lifting rocking handle I10 to enable the grinding magnetic pole group 4 to slowly descend, stopping when the grinding magnetic pole group 4 descends to a position close to the upper surface of the lower die, locking the lifting rocking handle I10, then slowly shaking the lifting rocking handle II 12 to enable the three-jaw chuck 6 to slowly descend, stopping when a grinding gap (the distance between the magnetism gathering head 22 and the processed surface) is 2-3mm, and locking the position of the three-jaw chuck 3 through a locking nut 2;
3) setting parameters: setting a magnetic pole rotating motor 14 to rotate forwards, and setting the rotating speed to be 1000-; the workpiece rotating motor 8 rotates reversely, and the rotating speed is set to be 300-500 r/min; the relative rotational speed at the time of polishing is thus equal to the sum of the rotational speed of the magnetic pole rotating motor 14 and the rotational speed of the workpiece rotating motor 8;
4) fine grinding: adding oily grinding fluid and ferromagnetic grinding particles with the granularity of 80 meshes between the magnetic head 22 and the processed surface of the lower die, starting the magnetic pole rotating motor 14 and the workpiece rotating motor 8, processing for 30-40min, adding the oily grinding fluid to the processing area once every 10min, and also adding the ferromagnetic grinding particles; at the moment, the surface appearance of the lower die is shown in figure 9;
5) ultra-precision grinding: and (3) replacing ferromagnetic grinding particles with the granularity of 100 meshes, starting the magnetic pole rotating motor 14 and the workpiece rotating motor 8, processing for 30-40min, and filling oily grinding fluid into the processing area once every 10min, or simultaneously supplementing the ferromagnetic grinding particles.
Because the die material is die steel and has magnetic permeability, the surface of the lower die is slightly magnetized in the process of contacting ferromagnetic grinding particles, so that part of the ferromagnetic grinding particles contacting the surface of the lower die can be adsorbed on the surface of the cavity, thereby increasing the grinding pressure, and the lower dies with different sizes can be polished by replacing the magnetic pole fixing connecting rods 20 with different shapes; the ferromagnetic grinding particles in the magnetic field have high fluidity, self-sharpening property and profiling property, and have good effect on polishing the surface of the concave cavity;
6) cleaning: taking down the superfinishing lower die, cleaning and then airing;
7) and (4) detecting a result: the change in the topography of the lower mold surface before and after grinding was examined using a 3D microscope with an ultra depth of field, see fig. 10.
Claims (5)
1. A device for polishing a 45-degree parting O-shaped rubber sealing ring mold is characterized by comprising a workpiece clamping driving mechanism, a workpiece translation positioning mechanism, a grinding magnetic pole group and a magnetic pole clamping self-rotating mechanism;
the workpiece clamping driving mechanism is fixed on the workpiece translation positioning mechanism, and the workpiece translation positioning mechanism drives the workpiece clamping driving mechanism to move in a cross manner on a horizontal plane; the grinding magnetic pole group is arranged above the workpiece clamping driving mechanism, the magnetic pole clamping self-rotating mechanism is fixedly connected with the grinding magnetic pole group and drives the grinding magnetic pole group to rotate, and the grinding magnetic pole group grinds and polishes the inner surface of the workpiece;
the grinding magnetic pole group comprises a magnetic pole fixing connecting rod, a cylindrical axial permanent magnetic pole and a magnetic gathering head, wherein the upper end of the cylindrical axial permanent magnetic pole is fixed on the magnetic pole fixing connecting rod through magnetic attraction, the lower end of the cylindrical axial permanent magnetic pole fixes the magnetic gathering head through the magnetic attraction, the magnetic pole fixing connecting rod is of a cylindrical structure with a bending angle, and the bending angle between the upper portion and the lower portion of the magnetic pole fixing connecting rod is 95-170 degrees.
2. The device for polishing the die for the 45-degree parting O-shaped rubber sealing ring according to the claim 1, characterized in that the workpiece translation positioning mechanism comprises a longitudinal moving platform and a transverse moving platform, wherein the longitudinal moving platform is fixed on a foundation and is provided with the transverse moving platform; the longitudinal moving platform and the transverse moving platform are the same in structure and respectively comprise a fixed plate and a moving plate, the fixed plate and the moving plate are in sliding connection through a dovetail groove, a nut is arranged on the fixed plate, threads matched with the nut are arranged at the bottom of the moving plate, the nut is connected with an adjusting hand wheel, and the adjusting hand wheel drives the nut to rotate to drive the moving plate to move on the fixed plate along the dovetail groove; the fixed plate of the transverse moving platform is vertically and fixedly connected with the moving plate of the longitudinal moving platform.
3. The device for polishing the die for the 45-degree parting O-shaped rubber sealing ring as claimed in claim 1, wherein the workpiece clamping driving mechanism comprises a workpiece rotating motor, an elastic pin coupling, a reduction gearbox, a three-jaw chuck and a fixed bottom plate, the workpiece rotating motor is connected with an input shaft of the reduction gearbox through the elastic pin coupling, an output shaft of the reduction gearbox is connected with the three-jaw chuck, and the workpiece rotating motor and the reduction gearbox are fixed on the workpiece translation positioning mechanism through the fixed bottom plate.
4. The device for polishing the die for the 45-degree parting O-shaped rubber sealing ring according to the claim 1, characterized in that the magnetic pole clamping self-rotating mechanism comprises an upright drill and a three-jaw chuck, the bottom of a working shaft of the upright drill is connected with the three-jaw chuck, and the three-jaw chuck clamps the magnetic pole fixing connecting rod.
5. The device for polishing the die for the 45-degree parting O-shaped rubber sealing ring according to claim 1, wherein the magnetic pole fixing connecting rods are more than 2 magnetic pole fixing connecting rods with different bending angles; the cylindrical axial permanent magnet poles are more than 2 cylindrical axial permanent magnet poles with different magnetic field strengths.
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| CN201920709616.4U CN210147734U (en) | 2019-05-17 | 2019-05-17 | Device for polishing 45-degree parting O-shaped rubber sealing ring mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110103104A (en) * | 2019-05-17 | 2019-08-09 | 辽宁科技大学 | A kind of device and method polishing 45 ° of parting O shape die for rubber seal rings |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110103104A (en) * | 2019-05-17 | 2019-08-09 | 辽宁科技大学 | A kind of device and method polishing 45 ° of parting O shape die for rubber seal rings |
| CN110103104B (en) * | 2019-05-17 | 2024-03-26 | 辽宁科技大学 | Device and method for polishing 45-degree parting O-shaped rubber sealing ring mold |
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