CN116697014A - Continuous oil cavity static pressure nut and manufacturing method thereof - Google Patents
Continuous oil cavity static pressure nut and manufacturing method thereof Download PDFInfo
- Publication number
- CN116697014A CN116697014A CN202310683608.8A CN202310683608A CN116697014A CN 116697014 A CN116697014 A CN 116697014A CN 202310683608 A CN202310683608 A CN 202310683608A CN 116697014 A CN116697014 A CN 116697014A
- Authority
- CN
- China
- Prior art keywords
- oil cavity
- static pressure
- spiral
- pressure nut
- thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 110
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000003466 welding Methods 0.000 claims abstract description 41
- 239000000945 filler Substances 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 238000007514 turning Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 179
- 238000003801 milling Methods 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 12
- 239000010687 lubricating oil Substances 0.000 claims description 5
- 238000005461 lubrication Methods 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 5
- 230000006872 improvement Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 12
- 230000002706 hydrostatic effect Effects 0.000 description 17
- 230000005540 biological transmission Effects 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0436—Pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a static pressure nut with a continuous oil cavity and a manufacturing method thereof, wherein the static pressure nut comprises a lead screw and a static pressure nut; the inside of the static pressure nut is provided with trapezoidal threads, and the spiral surfaces on two sides of the trapezoidal threads are provided with a first spiral oil cavity and a second spiral oil cavity which are oppositely arranged; filling welding fillers in a welding mode in a range from 1/4 circle to 1 circle at the two ends of the trapezoidal thread, wherein the welding fillers penetrate through two spiral surfaces of the thread from the inside of the trapezoidal thread; sealing two ends of the first spiral oil cavity and the second spiral oil cavity through welding fillers; realizing the continuous oil cavity structure of the static pressure nut. The continuous oil cavity static pressure nut provided by the invention avoids the technical problems that the cutting point is difficult to feed and the cutting point is difficult to retract in the turning process because the end oil sealing surface which is the non-processing area of the initial and final section threads of the traditional continuous oil cavity static pressure nut is avoided.
Description
Technical Field
The invention relates to the technical field of hydrostatic screw transmission, in particular to a hydrostatic nut with a continuous oil cavity and a manufacturing method thereof.
Background
Nowadays, with the continuous development of a numerical control machine tool in the high-speed, heavy-load and precise directions, the ball screw pair which is most widely applied in the field gradually exposes some inherent defects such as contact wear, heavy-load pitting corrosion, low-speed crawling, high-speed limitation, poor precision retention and the like due to the self structure, and the difficulty and cost for solving are increasingly large. People start to turn their eyes to the linear motor and the hydrostatic screw pair.
The hydrostatic screw pair is used for realizing linear feeding movement of the sliding table in the large-scale precision machine. Devices using hydrostatic screws have many advantages, such as high load carrying capacity, low wear, high vibration resistance, etc., which are particularly attractive for industrial applications. These advantages result from the hydrostatic screw forming an oil film with a thickness greater than irregularities in the solid surface, which completely separates relatively moving solid parts during operation of the device. The advantages of the hydrostatic screw in the aspects of running speed, bearing capacity and transmission precision accord with the trend of high-speed, heavy-load and integrated development of the numerical control machine tool. Compared with ball screw and linear motor, the hydrostatic screw is a more competitive transmission form in high-speed, heavy-load and precise occasions. Its limitation is high cost. In recent years, with the continuous increase of abrasion and heating of the ball screw pair under high-speed heavy load and continuous increase of improvement cost, research and application of the hydrostatic screw have been in a trend of obviously increasing.
However, while hydrostatic screws have many advantages, their use is not widespread. The main reason is that the static pressure oil cavity in the static pressure nut is positioned on the spiral surface of the internal thread of the nut, and the internal thread of the nut has a certain depth, so that the forming lathe tool cannot smoothly feed and retract, and the processing of the static pressure spiral oil cavity becomes difficult. Although the 3D printing technology can directly print out the static pressure nut with the static pressure oil cavity, the processing cost of the 3D printing static pressure nut is too high, the accuracy of threads is difficult to ensure, and the material of the static pressure nut is limited by the 3D printer. The processing difficulty affects the production and application of the hydrostatic screw, and also becomes one of the main reasons for the non-wide application of the hydrostatic screw. The hydrostatic lubrication structure is complex, the processing is difficult, a reliable oil supply system is required to be equipped, and the heating is serious at high speed, so that the hydrostatic lubrication structure is difficult to apply in a high-speed system.
The static pressure nut is divided into a continuous oil cavity static pressure nut and an intermittent oil cavity static pressure nut according to different oil cavity forms; the static pressure nut with continuous oil cavity is characterized in that spiral long grooves (namely static pressure oil cavities) are respectively formed on two side spiral surfaces of the nut thread, but 1/4 circle to 1 circle of non-oil cavity are formed at the beginning and end sections of the nut thread to play a role in sealing oil, namely an end oil sealing surface, and the expansion diagram of the continuous oil cavity on one side surface of the thread is shown in fig. 1. Because the nut has a certain depth, a milling cutter or a grinding wheel of a five-axis machine tool and the like cannot smoothly extend into the nut for milling or grinding; the turning of the spiral long groove is the most convenient mode, but due to the existence of the end oil sealing surface, the spiral long groove on the nut thread does not penetrate through the whole thread, the end oil sealing surface must be avoided when the spiral long groove is turned, and the technical problem that a cutting point is difficult to feed and a cutting point is difficult to retract exists.
Therefore, the structure of the static pressure nut is improved, so that the static pressure oil cavity on the screw thread spiral surface of the static pressure nut is easy to process, the manufacturing difficulty and cost of the static pressure nut are reduced, and the static pressure nut has important significance for popularization and application of the static pressure screw rod and development of high speed and high precision of a high-end numerical control machine tool.
Disclosure of Invention
The invention aims to provide a continuous oil cavity static pressure nut and a manufacturing method thereof, so that a static pressure oil cavity on a screw thread surface of the static pressure nut is easy to process, the manufacturing cost of the static pressure nut is reduced, and the technical problem that a cutting point is difficult to feed and a cutting point is difficult to retract during turning is avoided.
The technical scheme of the invention for achieving the purpose is that the static pressure nut with the continuous oil cavity comprises a static pressure nut and a screw rod; the static pressure nut is cylindrical, trapezoidal threads are formed in the static pressure nut, and a first spiral oil cavity and a second spiral oil cavity which are oppositely arranged are formed in the spiral surfaces on two sides of the trapezoidal threads; filling welding fillers in a welding mode in a range from 1/4 circle to 1 circle at the two ends of the trapezoidal thread, wherein the welding fillers penetrate through two spiral surfaces of the thread from the inside of the trapezoidal thread; sealing two ends of the first spiral oil cavity and the second spiral oil cavity through welding fillers; after the static pressure nut and the screw rod are assembled, the end parts of the first spiral oil cavity and the second spiral oil cavity play a role in sealing oil, so that certain liquid resistance is formed in an oil outlet path, the oil cavity pressure is ensured to be established between the first spiral oil cavity and the second spiral oil cavity, and the continuous oil cavity structure of the static pressure nut is realized.
2 technological planes are arranged on the outer cylindrical surface of the static pressure nut, 2 oil collecting grooves are further arranged on each technological plane, and a plurality of oil inlet holes are formed among the oil collecting grooves, the first spiral oil cavity and the second spiral oil cavity; after the static pressure nut and the screw rod are assembled, a first throttling gap is formed between the screw surface of the first spiral oil cavity and the screw rod thread, and a second throttling gap is formed between the screw surface of the second spiral oil cavity and the screw rod thread, so that lubrication of the static pressure screw rod pair is realized; the flow path of the lubricating oil is: lubricating oil conveyed by the pump station enters the first spiral oil cavity and the second spiral oil cavity through the oil collecting grooves through the plurality of oil inlet holes, flows to the tooth tops and the tooth bottoms of the screw nut matched threads through the first throttling gap and the second throttling gap, flows out of the static pressure nut, and flows back to the pump station through the oil return pipeline to form oil supply circulation.
One end of the static pressure nut is further provided with a flange, and the flange is further provided with a threaded mounting hole for mounting the static pressure nut and the nut seat.
The continuous oil cavity manufacturing method of the continuous oil cavity static pressure nut comprises the following steps:
step 1: adopting bar stock to process the outer cylindrical surface and internal trapezoidal threads of the static pressure nut;
step 2: respectively and integrally turning two opposite spiral surfaces of the trapezoidal thread in the static pressure nut from beginning to end to form a complete first spiral oil cavity and a complete second spiral oil cavity;
step 3: cutting off incomplete thread parts of trapezoidal threads at two ends of the static pressure nut by using a milling cutter, so that the trapezoidal threads of the static pressure nut have enough strength;
step 4: milling the first spiral oil cavity and the second spiral oil cavity in the range of 1/4 circle to 1 circle by using a milling cutter at two end parts of the trapezoidal thread, namely enabling the first spiral oil cavity and the second spiral oil cavity in the range of 1/4 circle to 1 circle to be completely penetrated in the axial direction, and forming 1/4 circle to 1 circle of axial penetrating spiral oil cavity;
step 5: the two ends of the static pressure nut are respectively welded with enough welding filler in the through spiral oil cavity, so that the welding filler fills the whole through spiral oil cavity and can protrude out of two spiral surfaces of the trapezoidal thread;
step 6: carrying out rough machining, semi-finish machining and finish machining on the internal thread of the static pressure nut again, so that the welding filler is smoothly connected with the two spiral surfaces of the trapezoidal thread, and a gap is avoided; thus, the two sides of the first spiral oil cavity and the second spiral oil cavity are sealed by 1/4 circle to 1 circle of threads to serve as end oil sealing surfaces, and the continuous oil cavity structure of the static pressure nut is realized.
As an improvement of the above steps, step 5 may be: and respectively welding the first spiral metal piece and the second spiral metal piece in the through spiral oil cavities at the two ends of the static pressure nut, wherein the first spiral metal piece, the second spiral metal piece and the welding flux are jointly used as welding fillers.
The continuous oil cavity static pressure nut manufactured by the technical scheme of the invention has the beneficial effects that: (1) The end oil sealing surface of the continuous oil cavity of the static pressure nut is formed by adopting a welding filling mode, and a complete continuous spiral oil cavity is integrally processed from beginning to end before welding filling; the continuous spiral oil cavity on the static pressure nut can be completed through forming and turning, and two ends of the continuous spiral oil cavity are further sealed in a welding filling mode, so that a structure of the continuous spiral oil cavity is formed. Therefore, the technical problems that the cutting point is difficult to feed and the cutting point is difficult to retract during turning are avoided in the non-processing area of the initial thread and the final thread of the traditional continuous oil cavity static pressure nut, namely, the end oil sealing surface; (2) The milling cutter is adopted to mill the spiral oil cavities at the two opposite ends of the trapezoidal thread of the static pressure nut completely, and then sufficient welding filler is welded on the two sides, so that the continuous oil cavity of the static pressure nut is formed, the processing technology is simplified, the processing cost is reduced, and the transmission precision of the thread can be ensured.
Drawings
FIG. 1 is an expanded view of a continuous oil cavity on one side of a hydrostatic nut thread;
FIG. 2 is a schematic view of the structure of the continuous oil chamber static pressure nut of the present invention;
FIG. 3 is a longitudinal cross-sectional view of the continuous oil pocket static pressure nut of the present invention;
FIG. 4 is a partial view of the region of the hydrostatic nut and lead screw threaded engagement of the present invention;
FIG. 5 is a view of a trapezoidal thread structure with a continuous helical oil cavity inside a hydrostatic nut of the present invention;
fig. 6 is a schematic diagram of a trapezoidal thread structure of the static pressure nut continuous oil cavity manufacturing step 4 of the present invention.
In the above-mentioned figures of the drawing,
1. a static pressure nut; 11. trapezoidal threads; 12. a first helical oil chamber; 13. a second helical oil chamber; 14. welding the filler; 15. a process plane; 16. an oil sump; 17. an oil inlet hole; 18. a flange; 19. a threaded mounting hole; 20. penetrating the spiral oil cavity;
2. and (5) a screw rod.
Detailed Description
In order to further describe the technical means and effects adopted by the invention to achieve the preset aim, the following detailed description is given below of the specific implementation, structure, characteristics and effects according to the invention with reference to the accompanying drawings and preferred embodiments:
a static pressure nut with a continuous oil cavity, as shown in fig. 2, comprises a static pressure nut 1 and a screw rod 2; the structure of the static pressure nut 1 is as shown in fig. 2 to 5, the static pressure nut 1 is cylindrical, a trapezoidal thread 11 is arranged in the static pressure nut, and a first spiral oil cavity 12 and a second spiral oil cavity 13 which are oppositely arranged are arranged on the spiral surfaces on two sides of the trapezoidal thread 11; filling welding filler 14 in a welding mode within the range of 1/2 circle at the two ends of the trapezoidal thread 11, wherein the welding filler 14 penetrates through two screw surfaces of the thread from the inside of the trapezoidal thread 11; the two ends of the first spiral oil cavity 12 and the second spiral oil cavity 13 are closed by welding the filler 14; after the static pressure nut 1 and the screw rod 2 are assembled, the ends of the first spiral oil cavity 12 and the second spiral oil cavity 13 play a role in sealing oil, so that certain liquid resistance is formed in an oil outlet path, the oil cavity pressure is ensured to be built up in the first spiral oil cavity 12 and the second spiral oil cavity 13, and the continuous oil cavity structure of the static pressure nut 1 is realized.
2 technological planes 15 are arranged on the outer cylindrical surface of the static pressure nut 1, 2 oil collecting grooves 16 are further arranged on each technological plane 15, and a plurality of oil inlet holes 17 are formed among the oil collecting grooves 16, the first spiral oil cavity 12 and the second spiral oil cavity 13; after the static pressure nut 1 and the screw rod 2 are assembled, a first throttling gap 12-2 is formed between the screw surface of the first screw oil cavity 12 and screw threads, and a second throttling gap 13-2 is formed between the screw surface of the second screw oil cavity 13 and the screw threads, so that lubrication of the static pressure screw pair is realized; the flow path of the lubricating oil is: lubricating oil conveyed by the pump station enters the first spiral oil cavity 12 and the second spiral oil cavity 13 through the oil collecting groove 16 through the plurality of oil inlet holes 17, flows to the tooth tops and the tooth bottoms of the screw nut matched threads through the first throttling gap 12-2 and the second throttling gap 13-2, enters the outflow static pressure nut, and flows back to the pump station through the oil return pipeline to form oil supply circulation.
One end of the static pressure nut 1 is further provided with a flange 18, and the flange 18 is further provided with a threaded mounting hole 19 for mounting the static pressure nut 1 and a nut seat.
The continuous oil cavity manufacturing method of the continuous oil cavity static pressure nut comprises the following steps:
step 1: processing an outer cylindrical surface and an inner trapezoidal thread 11 of the static pressure nut 1 by adopting a bar stock;
step 2: on two opposite spiral surfaces of the trapezoid threads 11 in the static pressure nut, respectively and integrally turning the first spiral oil cavity 12 and the second spiral oil cavity 13 from beginning to end;
step 3: cutting off incomplete thread parts of trapezoidal threads 11 at two ends of the static pressure nut 1 by using a milling cutter, so that the trapezoidal threads 11 of the static pressure nut 1 have enough strength;
step 4: milling the first spiral oil cavity 12 and the second spiral oil cavity 13 within the range of 1/2 circle by using a milling cutter at the two end parts of the trapezoidal thread 11, namely enabling the first spiral oil cavity 12 and the second spiral oil cavity 13 within the range of 1/2 circle to be completely penetrated in the axial direction, and forming a 1/2 circle axial penetrating spiral oil cavity 20, as shown in fig. 6;
step 5: sufficient welding filler 14 is welded in the through spiral oil cavity 20 at the two ends of the static pressure nut 1 respectively, so that the welding filler 14 fills the whole through spiral oil cavity 20 and can protrude out of the two spiral surfaces of the trapezoidal thread 11;
step 6: carrying out rough machining, semi-finishing and finishing on the internal thread of the static pressure nut 1 again, so that the welding filler 14 is smoothly connected with the two spiral surfaces of the trapezoidal thread 11 without gaps; thus, 1/2 circle of threads are closed on two sides of the first spiral oil cavity 12 and the second spiral oil cavity 13 and serve as end oil sealing surfaces, and a continuous oil cavity structure of the static pressure nut is realized.
As an improvement of the above steps, step 5 may be: the first spiral metal piece and the second spiral metal piece are welded in the through spiral oil cavities 20 at the two ends of the static pressure nut 1 respectively, wherein the first spiral metal piece and the second spiral metal piece and the welding flux are used as welding filler 14 together.
The static pressure nut with the continuous oil cavity is formed in a welding filling mode, and a complete continuous spiral oil cavity is integrally machined from beginning to end before welding filling; the continuous spiral oil cavity on the static pressure nut can be completed through forming and turning, and two ends of the continuous spiral oil cavity are further sealed in a welding filling mode, so that a structure of the continuous spiral oil cavity is formed. Therefore, the technical problems that the cutting point is difficult to feed and the cutting point is difficult to retract during turning are avoided in the non-processing area of the initial thread and the final thread of the traditional continuous oil cavity static pressure nut, namely the end oil sealing surface. The milling cutter is adopted to mill the spiral oil cavities at the two opposite ends of the trapezoidal thread of the static pressure nut completely, and then sufficient welding filler is welded on the two sides, so that the continuous oil cavity of the static pressure nut is formed, the processing technology is simplified, the processing cost is reduced, and the transmission precision of the thread can be ensured.
The invention has been described above with reference to preferred embodiments, but the scope of the invention is not limited thereto, various modifications may be made thereto and equivalents may be substituted for elements thereof without structural conflict, technical features mentioned in the various embodiments may be combined in any way, and any reference signs in the claims shall not be construed as limiting the claims concerned, the embodiments shall be construed as exemplary and non-limiting in all respects. Therefore, any and all technical solutions falling within the scope of the claims are within the scope of the present invention.
Claims (4)
1. The continuous oil cavity static pressure nut is characterized by comprising a static pressure nut (1) and a screw rod (2); the static pressure nut (1) is cylindrical, a trapezoidal thread (11) is arranged in the static pressure nut, and a first spiral oil cavity (12) and a second spiral oil cavity (13) which are oppositely arranged are arranged on spiral surfaces on two sides of the trapezoidal thread (11); filling welding fillers (14) in a welding mode within the range of 1/4 circle to 1 circle at the two ends of the trapezoidal thread (11), wherein the welding fillers (14) penetrate through two screw surfaces of the thread from the inside of the trapezoidal thread (11); the two ends of the first spiral oil cavity (12) and the second spiral oil cavity (13) are sealed by welding fillers (14); after the static pressure nut (1) and the screw rod (2) are assembled, the ends of the first spiral oil cavity (12) and the second spiral oil cavity (13) play a role in sealing oil, so that certain liquid resistance is formed in an oil outlet path, the oil cavity pressure is ensured to be built up in the first spiral oil cavity (12) and the second spiral oil cavity (13), and the continuous oil cavity structure of the static pressure nut (1) is realized.
2. A continuous oil cavity static pressure nut as claimed in claim 1, characterized in that 2 process planes (15) are arranged on the outer cylindrical surface of the static pressure nut (1), 2 oil collecting grooves (16) are further arranged on each process plane (15), and a plurality of oil inlet holes (17) are arranged between the oil collecting grooves (16) and the first spiral oil cavity (12) and the second spiral oil cavity (13); after the static pressure nut (1) and the screw rod (2) are assembled, a first throttling gap (12-2) is formed between the screw surface of the first spiral oil cavity (12) and the screw rod thread, and a second throttling gap (13-2) is formed between the screw surface of the second spiral oil cavity (13) and the screw rod thread, so that lubrication of the static pressure screw rod pair is realized.
3. A continuous oil cavity static pressure nut according to claim 2, characterized in that the lubricating oil conveyed by the pump station enters the first spiral oil cavity (12) and the second spiral oil cavity (13) through a plurality of oil inlet holes (17) from the oil collecting groove (16), flows to the tooth tops and the tooth bottoms of the screw nut matched threads through the first throttling gap (12-2) and the second throttling gap (13-2) and flows out of the static pressure nut, and flows back to the pump station through the oil return pipeline to form an oil supply circulation.
4. The continuous oil chamber static pressure nut according to claim 1, wherein the continuous oil chamber manufacturing method comprises the following steps:
step 1: adopting bar stock to process the outer cylindrical surface and the internal trapezoidal threads (11) of the static pressure nut (1);
step 2: on two opposite spiral surfaces of a trapezoid thread (11) in the static pressure nut (1), respectively and integrally turning a first spiral oil cavity (12) and a second spiral oil cavity (13) from beginning to end;
step 3: cutting off incomplete thread parts of trapezoidal threads (11) at two ends of the static pressure nut (1) by using a milling cutter, so that the trapezoidal threads (11) of the static pressure nut (1) have enough strength;
step 4: at the two ends of the trapezoidal thread (11), milling through the first spiral oil cavity (12) and the second spiral oil cavity (13) in the range of 1/4 circle to 1 circle by using a milling cutter, namely enabling the first spiral oil cavity (12) and the second spiral oil cavity (13) in the range of 1/4 circle to 1 circle of the thread to be completely penetrated in the axial direction to form a 1/4 circle to 1 circle axial penetrating spiral oil cavity (20);
step 5: sufficient welding filler (14) is respectively welded in the through spiral oil cavities (20) at the two ends of the static pressure nut (1), so that the welding filler (14) fills the whole through spiral oil cavity (20) and can protrude out of the two spiral surfaces of the trapezoidal thread (11);
step 6: carrying out rough machining, semi-finishing and finishing on the internal thread of the static pressure nut (1) again to ensure that the welding filler (14) is smoothly connected with the two spiral surfaces of the trapezoidal thread (11) without gaps; thus, the two sides of the first spiral oil cavity (12) and the second spiral oil cavity (13) are closed by 1/4 to 1 circle of threads to serve as end oil sealing surfaces, and the continuous oil cavity structure of the static pressure nut (1) is realized.
As an improvement of the above steps, step 5 may be: the first spiral metal piece and the second spiral metal piece are welded in a through spiral oil cavity (20) at two ends of the static pressure nut (1) respectively, wherein the first spiral metal piece, the second spiral metal piece and welding flux are used as welding filler (14) together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310683608.8A CN116697014A (en) | 2023-06-09 | 2023-06-09 | Continuous oil cavity static pressure nut and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310683608.8A CN116697014A (en) | 2023-06-09 | 2023-06-09 | Continuous oil cavity static pressure nut and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116697014A true CN116697014A (en) | 2023-09-05 |
Family
ID=87840593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310683608.8A Pending CN116697014A (en) | 2023-06-09 | 2023-06-09 | Continuous oil cavity static pressure nut and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116697014A (en) |
-
2023
- 2023-06-09 CN CN202310683608.8A patent/CN116697014A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8381695B2 (en) | Workpiece having a tribologically useable surface and method for producing such a surface | |
| CN103753322B (en) | The processing unit (plant) of differential casing and technique thereof | |
| CN111515616A (en) | Machining method of precision bearing seat | |
| CN104759929A (en) | Large precise heavy-load intelligent adjusting rotating table | |
| CN106002306A (en) | Ultraprecise machine tool for machining large-diameter Fresnel lens die | |
| CN116697014A (en) | Continuous oil cavity static pressure nut and manufacturing method thereof | |
| CN201217149Y (en) | Horizontal numerical control boring wheeling machine | |
| CN208961047U (en) | A kind of big times of diameter camshaft hole machining tool of diesel engine | |
| CN2176856Y (en) | High-precision dynamical-statical pressure oil film bearing numerically controlled machine tool | |
| CN212144515U (en) | Numerical control boring lathe end face mechanism | |
| CN110814451A (en) | Cylindrical inner cavity electrolytic machining device | |
| CN1329670C (en) | Processing method of deep trough ball bearig ball sbaped pocket hole cage | |
| CN102240883B (en) | Method for rolling inner bore of cylinder barrel | |
| CN101332556A (en) | Production method of diamond compound tool for processing shoulder hole | |
| CN211804851U (en) | Static pressure centre frame | |
| CN116717573A (en) | Screw thread combined static pressure nut and manufacturing method thereof | |
| CN114535940A (en) | Processing method of short cylindrical roller bearing retainer with positioning flange on outer ring | |
| CN104070190B (en) | Straight hydrostatic servo quick manual tool changing power spindle head and working method | |
| CN113977008A (en) | Worm machining device and machining method thereof | |
| CN111558748A (en) | Machining device and machining method for gear | |
| CN116608249A (en) | Welded static pressure nut and manufacturing method thereof | |
| CN116292803A (en) | Screw-assembled static pressure nut | |
| CN205096565U (en) | A cutter and system for processing hole | |
| CN113909816B (en) | Turning and milling combined machining method for rod end joint bearing outer ring | |
| CN108673143A (en) | A kind of dibit side machining apparatus bed structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |