CN110014064B - Hydraulic driving system of high-precision stamping numerical control machine tool - Google Patents
Hydraulic driving system of high-precision stamping numerical control machine tool Download PDFInfo
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- CN110014064B CN110014064B CN201910300938.8A CN201910300938A CN110014064B CN 110014064 B CN110014064 B CN 110014064B CN 201910300938 A CN201910300938 A CN 201910300938A CN 110014064 B CN110014064 B CN 110014064B
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- hydraulic
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- machine tool
- driving
- stamping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
- B30B15/026—Mounting of dies, platens or press rams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Presses And Accessory Devices Thereof (AREA)
Abstract
A hydraulic driving system of a high-precision stamping numerical control machine tool comprises a machine tool body, a lower machine tool body and an upper machine tool body, wherein a workbench is arranged on the lower machine tool body, a lower stamping assembly is connected onto the workbench, an upper stamping assembly is connected below the lower machine tool body, the hydraulic driving system comprises an oil tank, a filter, a driving valve group and a pressure maintaining valve group, the driving valve group is connected to the filter and the oil tank through a driving gear pump and a driving motor and supplies hydraulic oil to a hydraulic driving piece, and the pressure maintaining valve group is connected to the filter and the oil tank through a pressure maintaining gear pump and a pressure maintaining motor and supplies the hydraulic oil to an upper support hydraulic piece and a lower support hydraulic piece; therefore, the stamping device is simple in structure and convenient to operate, can provide effective buffering during stamping, can provide a self-adaptive function during stamping, is more widely applicable and has higher stamping yield.
Description
Technical Field
The invention relates to the technical field of punching machine tools, in particular to a hydraulic driving system of a high-precision punching numerical control machine tool.
Background
The stamping is a forming method in which a press and a die are used to apply external force to a plate, a strip, a pipe, a profile, etc. to cause plastic deformation or separation, thereby obtaining a workpiece (stamped part) of a desired shape and size. Stamping and forging are plastic working (or called pressure working), and are called forging and pressing. The stamped blanks are mainly hot and cold rolled steel sheets and strips. In the world, 60-70% of steel materials are plates, and most of the plates are punched to form finished products. The body, chassis, oil tank, radiator sheet, boiler steam drum, shell of container, iron core silicon steel sheet of motor and electric appliance are all made by punching. There are also a large number of stamped parts in products such as instruments, household appliances, bicycles, office machines, and household utensils.
The stamping process is a production technology for obtaining product parts with certain shape, size and performance by directly applying deformation force to a plate in a die by means of the power of conventional or special stamping equipment and deforming the plate. The plate, the die and the equipment are three elements of stamping processing. The hot stamping and the cold stamping are divided according to the stamping processing temperature. The former is suitable for processing sheet materials with high deformation resistance and poor plasticity; the latter is carried out at room temperature and is a common stamping method for thin sheets. It is one of the main methods of metal plastic working (or pressure working), and also belongs to the material forming engineering technology.
However, the existing punching device is often defective in use: the existing stamping die is relatively fixed and cannot adapt to the strength and hardness of a stamping part, so that the stamping failure is easily caused.
Therefore, in view of the above-mentioned drawbacks, the present inventors have studied and designed a hydraulic driving system for a high-precision press numerical control machine tool by combining the experience and result of the related industries for many years through careful study and design to overcome the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to provide a hydraulic driving system of a high-precision stamping numerical control machine tool, which is simple in structure and convenient to operate, can provide effective buffering during stamping, can provide a self-adaptive function during stamping, is more widely applicable and has higher stamping yield.
In order to solve the problems, the invention discloses a hydraulic driving system of a high-precision stamping numerical control machine tool, which comprises a machine tool body, a lower machine tool body and an upper machine tool body, wherein a workbench is arranged on the lower machine tool body, a lower stamping assembly is connected on the workbench, an upper stamping assembly is connected below the lower machine tool body, the lower stamping assembly comprises a lower bearing platform fixed to the workbench, a lower die is arranged on the lower bearing platform, a plurality of lower self-adapting assemblies positioned between the lower die and the lower bearing platform are also arranged, the lower self-adapting assemblies comprise a plurality of lower support hydraulic pieces arranged at intervals, the upper stamping assembly comprises an upper bearing platform fixed to the upper machine tool body, an upper die is arranged on the upper bearing platform, a hydraulic driving piece for driving the upper die to stamp is arranged on the upper bearing platform, and an upper self-adapting assembly is arranged between the hydraulic driving piece and the upper die, go up the self-adaptation subassembly and contain a plurality of upper support hydraulic parts, its characterized in that:
the hydraulic drive system contains oil tank, filter, drive valves and pressurize valves, the drive valves is connected to filter and oil tank and supplies with hydraulic oil to hydraulic drive spare through drive gear pump and driving motor, the pressurize valves is connected to filter and oil tank and supplies with hydraulic oil supreme support hydraulic part and lower support hydraulic part through pressurize gear pump and pressurize motor.
Wherein: the drive valves at least contain the solenoid directional valve, first check valve and the first one-way throttle valve that establish ties in proper order and set up, the front end of solenoid directional valve is connected to the drive gear pump, the end of first one-way throttle valve is connected to hydraulic drive spare's no pole chamber through the pipeline.
Wherein: and a ball valve and a first overflow valve are also arranged between the first one-way throttle valve and the hydraulic driving piece.
Wherein: and an energy accumulator is also arranged between the electromagnetic directional valve and the driving gear pump.
Wherein: the pressurize valves contain the electromagnetism supporting valve, the front end of electromagnetism supporting valve is connected to the pressurize gear pump through choke valve and second overflow valve, and the rear end is connected to the last support hydraulic part and the lower support hydraulic part that need the pressurize through a plurality of second one-way throttle valves respectively.
Wherein: the electromagnetic supporting valve is connected with a second one-way valve in parallel.
Wherein: the electromagnetic supporting valve is also provided with a manual operating rod.
Wherein: the output end of the pressure maintaining gear pump is also provided with a pressure detector to provide a real-time monitoring function.
According to the structure, the hydraulic adjusting device is simple in structure and flexible to operate, a self-adaptive buffering effect can be provided through the hydraulic driving system, the upper die plate and the lower die plate are supported through the self-adaptive assembly, hydraulic adjustment is easy to achieve, a better buffering effect is provided, the strength, the material and the like of different stamping parts can be adjusted correspondingly in real time through the hydraulic self-adaptive function of the control system, and a better stamping basis is provided for efficient and stable stamping of a stamping die.
The details of the present invention can be obtained from the following description and the attached drawings.
Drawings
Fig. 1 shows a schematic structural diagram of a high-precision punching numerical control machine tool of the invention.
Fig. 2 shows a schematic view of a specific structure of the punching assembly of the present invention.
Fig. 3 shows a schematic diagram of a hydraulic driving system of a high precision press numerical control machine tool of the present invention.
Reference numerals:
1. a machine tool body; 2. a lower bed body; 3. a work table; 4. a lower punch assembly; 5. an upper lathe bed; 6. an upper punch assembly; 7. connecting columns; 11. a lower bearing platform; 12. a lower die; 13. a lower support; 14. a lower buffer member; 15. an upper bearing platform; 16. an upper die; 17. a hydraulic drive; 18. an upper connecting plate; 19. a lower connecting plate; 20. a middle connecting column; 21. an outer connecting column; 22. an upper support member; 23. an upper cushion member; 101. an oil tank; 102. a filter; 103. driving a gear pump; 104. a drive motor; 105. an accumulator; 106. an electromagnetic directional valve; 107. a first check valve; 108. a first one-way throttle valve; 109. a first overflow valve; 110. a pressure maintaining gear pump; 111. a pressure maintaining motor; 112. a pressure detector; 113. a second overflow valve; 114. an electromagnetic support valve; 115. a throttle valve; 116. a second one-way valve; 117. a manual operating lever; 118. a second one-way throttle valve.
Detailed Description
Referring to fig. 1 and 2, there is shown a high precision press numerical control machine tool to which the present invention is applied.
The high-precision stamping numerical control machine tool comprises a machine tool body 1, a lower machine tool body 2 and an upper machine tool body 5, wherein an electrical component, a hydraulic driving system, a numerical control system and the like are arranged in the machine tool body 1, a workbench 3 is arranged on the lower machine tool body 2, a lower stamping component 4 is connected on the workbench 3, and an upper stamping component 6 is connected below the lower machine tool body 5, so that the numerical control stamping operation of workpieces on the workbench 3 is realized through the structures, wherein a plurality of connecting columns 7 can be further arranged between the upper machine tool body 5 and the lower machine tool body 2, the connecting columns 7 can surround the upper stamping component 6 and the lower stamping component 4 to provide relative stability between the upper machine tool body 5 and the lower machine tool body 2 in stamping, wherein the connecting columns 7 can be buffer connecting columns, the lower ends of the connecting columns are fixed to the lower machine tool body, and the upper ends of the connecting columns are fixed to the upper machine tool body 5 through elastic connecting pieces such as buffer springs, thereby providing an overall cushioning and stabilizing function in the stamping.
In order to realize the functions of self-adaptation and buffering, the upper stamping assembly and the lower stamping assembly are specially arranged so as to realize the self-adaptation of workpieces and provide buffering in the stamping process.
Referring to fig. 2, which shows a schematic diagram of a specific structure of the stamping assembly of the present invention, the stamping assembly of the present invention mainly comprises an upper stamping assembly 6 and a lower stamping assembly 4, the lower stamping assembly includes a lower platform 11 fixed to the worktable 3, the lower platform 11 can be fixed to the worktable 3 through a plurality of peripheral fixing bolts, specifically, the worktable 3 is also fixed to the lower bed 2, the lower platform 11 is provided with a lower die 12, an upper surface of the lower platform 11 is provided with a lower receiving groove for the lower die 12 to be placed in, the lower die 12 is arranged in the lower receiving groove in a floating manner, and a plurality of lower buffers 14 are arranged in the lower receiving groove under the lower die 12, so as to provide an effective buffering function and avoid rigid impact of the lower receiving groove by the middle and lower stamping dies 12, in a preferred embodiment, the lower buffers 14 can be made of rubber, in order to realize the self-adaptation of the lower die 12 in the lower accommodating groove, a plurality of lower self-adaptation assemblies are further arranged between the lower die 12 and the lower bearing platform 11, wherein in the embodiment shown in the figure, each lower self-adaptation assembly comprises a plurality of lower supporting pieces 13 arranged at intervals, each lower supporting piece 13 is fixed in the lower bearing platform 11, the upper end of each lower supporting piece is connected to the lower surface of the lower die 12, each lower supporting piece 13 can be a lower supporting hydraulic piece, each lower supporting hydraulic piece is connected to a hydraulic driving system and a numerical control system in the machine tool body 1, and the numerical control system controls the hydraulic driving system to provide corresponding hydraulic supporting pressure for each lower supporting hydraulic piece.
The upper stamping assembly 6 comprises an upper bearing platform 15 fixed to the upper lathe bed 5, the upper bearing platform 15 can be fixed to the upper lathe bed 5 through a plurality of fixing bolts at the periphery, an upper die 16 is arranged on the upper bearing platform 15, an upper accommodating groove for the upper die 16 to be placed in is formed in the upper bearing platform 15, a plurality of upper buffer pieces 23 located above the upper die 16 are arranged in the upper accommodating groove, so that an effective buffer function is provided, the upper die 16 in stamping is prevented from generating rigid impact on the upper accommodating groove, a hydraulic driving piece 17 for driving the upper die 16 to stamp is arranged on the upper bearing platform 15, the hydraulic driving piece 17 is connected to a hydraulic driving system and a numerical control system to provide required stamping force and stroke, an upper self-adaptive assembly is arranged between the hydraulic driving piece 17 and the upper die 16 to provide a self-adaptive function, in the embodiment shown in the drawing, the upper self-adaptive assembly comprises a plurality of upper supporting pieces 22 arranged at intervals, the lower end of each upper support member 22 is connected to the upper surface of the upper die 16, wherein, in order to provide a better self-adaptive function, each upper support member 22 can be an upper support hydraulic part, each upper support hydraulic part is connected to a hydraulic drive system and a numerical control system in the machine tool body 1, and the numerical control system controls the hydraulic drive system to provide corresponding hydraulic support pressure for each upper support hydraulic part.
Wherein, go up the self-adaptation subassembly and still can contain upper junction plate 18 and lower connecting plate 19, connect and the periphery is connected through many outer joint posts 21 through well spliced pole 20 between the middle part of upper junction plate 18 and lower connecting plate 19, upper junction plate 18 is connected to hydraulic drive 17, lower connecting plate 19 is connected to last support piece 22 to form stable connection between hydraulic drive 17 and upper support piece 22, just well spliced pole 20 and a plurality of outer joint posts 21 are the buffer solution pressure connecting post, and are connected to hydraulic drive system and numerical control system in the lathe body 1, numerical control system control hydraulic drive system provides corresponding hydraulic support pressure for each upper joint post.
The hydraulic pressure provided for the upper supporting part 22 and the lower supporting part 13 by the hydraulic driving system, and the corresponding pressure supplied by an oil pump in the hydraulic driving system controlled by the numerical control system can adjust the supporting pressure of the upper supporting part 22 and the lower supporting part 13 in real time, so that different supporting pressures can be provided when workpieces of different materials, different hardness and different strength are stamped, the self-adaptive function is realized, and meanwhile, the real-time pressure adjusting function is also provided.
Referring to fig. 3, there is shown a hydraulic driving system of a high-precision press numerical control machine tool according to the present invention, which includes an oil tank 101, a filter 102, a driving valve block connected to the filter 102 and the oil tank 101 through a driving gear pump 103 and a driving motor 104 and supplying hydraulic oil to a hydraulic driver 17, and a pressure maintaining valve block connected to the filter 102 and the oil tank 101 through a pressure maintaining gear pump 110 and a pressure maintaining motor 111 and supplying hydraulic oil to an upper support hydraulic part and a lower support hydraulic part.
The driving valve group at least comprises an electromagnetic directional valve 106, a first one-way valve 107 and a first one-way throttle valve 108 which are sequentially connected in series, the front end of the electromagnetic directional valve 106 is connected to the driving gear pump 103, the tail end of the first one-way throttle valve 108 is connected to a rodless cavity of the hydraulic driving part 17 through a pipeline, a ball valve and a first overflow valve 109 are further arranged between the first one-way throttle valve 108 and the hydraulic driving part 17, and an accumulator 105 is further arranged between the electromagnetic directional valve 106 and the driving gear pump 103.
The pressure maintaining valve group comprises an electromagnetic support valve 114, the front end of the electromagnetic support valve 114 is connected to the pressure maintaining gear pump 110 through a throttle valve 115 and a second overflow valve 113, and the rear end of the electromagnetic support valve is connected to an upper support hydraulic part and a lower support hydraulic part which need pressure maintaining through a plurality of second one-way throttle valves 118.
The electromagnetic supporting valve 114 is connected in parallel with a second check valve 116, and in order to provide safety assurance, the electromagnetic supporting valve 114 is further provided with a manual operating lever 117 to provide manual cut-off operation in an emergency state.
The output end of the pressure maintaining gear pump 110 is further provided with a pressure detector 112 to detect the pressure of the pressure maintaining and transmit a signal back, so as to provide a real-time monitoring function.
It should be apparent that the foregoing description and illustrations are by way of example only and are not intended to limit the present disclosure, application or uses. While embodiments have been described in the embodiments and depicted in the drawings, the present invention is not limited to the particular examples illustrated by the drawings and described in the embodiments as the best mode presently contemplated for carrying out the teachings of the present invention, and the scope of the present invention will include any embodiments falling within the foregoing description and the appended claims.
Claims (3)
1. A hydraulic driving system of a high-precision stamping numerical control machine tool comprises a machine tool body, a lower machine tool body and an upper machine tool body, wherein a workbench is arranged on the lower machine tool body, a lower stamping assembly is connected onto the workbench, an upper stamping assembly is connected below the upper machine tool body, the lower stamping assembly comprises a lower bearing platform fixed to the workbench, a lower die is arranged on the lower bearing platform, a plurality of lower self-adapting assemblies positioned between the lower die and the lower bearing platform are further arranged, the lower self-adapting assemblies comprise a plurality of lower support hydraulic pieces arranged at intervals, the upper stamping assembly comprises an upper bearing platform fixed to the upper machine tool body, an upper die is arranged on the upper bearing platform, a hydraulic driving piece for driving the upper die to stamp is arranged on the upper bearing platform, an upper self-adapting assembly is arranged between the hydraulic driving piece and the upper die, and the upper self-adapting assembly comprises a plurality of upper support hydraulic pieces, the method is characterized in that:
the hydraulic driving system comprises an oil tank, a filter, a driving valve group and a pressure maintaining valve group, wherein the driving valve group is connected to the filter and the oil tank through a driving gear pump and a driving motor and supplies hydraulic oil to a hydraulic driving part, and the pressure maintaining valve group is connected to the filter and the oil tank through a pressure maintaining gear pump and a pressure maintaining motor and supplies the hydraulic oil to an upper support hydraulic part and a lower support hydraulic part;
the driving valve group at least comprises an electromagnetic reversing valve, a first one-way valve and a first one-way throttle valve which are sequentially connected in series, the front end of the electromagnetic reversing valve is connected to the driving gear pump, the tail end of the first one-way throttle valve is connected to a rodless cavity of the hydraulic driving piece through a pipeline, and a ball valve and a first overflow valve are arranged between the first one-way throttle valve and the hydraulic driving piece;
the pressure maintaining valve group comprises an electromagnetic supporting valve, the front end of the electromagnetic supporting valve is connected to the pressure maintaining gear pump through a throttle valve and a second overflow valve, and the rear end of the electromagnetic supporting valve is connected to an upper supporting hydraulic part and a lower supporting hydraulic part which need pressure maintaining through a plurality of second one-way throttle valves;
the output end of the pressure maintaining gear pump is also provided with a pressure detector to detect the pressure of pressure maintaining and transmit a signal back so as to provide a real-time monitoring function;
and an energy accumulator is also arranged between the electromagnetic directional valve and the driving gear pump.
2. The hydraulic drive system of a high-precision press numerical control machine tool according to claim 1, wherein: the electromagnetic supporting valve is connected with a second one-way valve in parallel.
3. The hydraulic drive system of a high-precision press numerical control machine tool according to claim 1, wherein: the electromagnetic supporting valve is also provided with a manual operating rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910300938.8A CN110014064B (en) | 2019-04-15 | 2019-04-15 | Hydraulic driving system of high-precision stamping numerical control machine tool |
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| CN201910300938.8A CN110014064B (en) | 2019-04-15 | 2019-04-15 | Hydraulic driving system of high-precision stamping numerical control machine tool |
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| CN110014064A CN110014064A (en) | 2019-07-16 |
| CN110014064B true CN110014064B (en) | 2021-09-03 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10323722A (en) * | 1997-03-26 | 1998-12-08 | Amada Co Ltd | Fabrication of punch press and device therefor |
| JP4576639B2 (en) * | 2005-05-16 | 2010-11-10 | アイダエンジニアリング株式会社 | Die cushion device for press machine |
| CN200988312Y (en) * | 2006-11-10 | 2007-12-12 | 佛山市顺德区荣兴锻压设备有限公司 | Real time controlled hydraulic press |
| CN101224635A (en) * | 2007-01-19 | 2008-07-23 | 北京机电研究所 | Flashing precise planning and cutting hydropress |
| CN201026671Y (en) * | 2007-01-25 | 2008-02-27 | 重庆工学院 | Economic fine blanking hydraulic press |
| CN105538571B (en) * | 2016-01-21 | 2018-01-19 | 合肥良骏汽车材料有限公司 | automobile interior trim part forming hydraulic press |
| CN106739122B (en) * | 2016-11-22 | 2018-10-23 | 宣城托新精密科技有限公司 | The electrichydraulic control press of mechanical signal commutation |
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2019
- 2019-04-15 CN CN201910300938.8A patent/CN110014064B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| 建筑机械使用与维护;田奇主编;《建筑机械使用与维护》;20030831;第196-198页 * |
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Effective date of registration: 20210730 Address after: 541000 plot d-03, information industry park, Guilin National High tech Zone, Chaoyang Road, Qixing District, Guilin City, Guangxi Zhuang Autonomous Region Applicant after: Guilin Hongbo Machine Tool Co.,Ltd. Address before: 400000 2-2-1-61 319 Haier Road, Jiangbei District, Chongqing. Applicant before: Chongqing Steady Technology Co.,Ltd. |
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