CN111300154A - Screw mechanism for lifting graded positioning cross beam - Google Patents
Screw mechanism for lifting graded positioning cross beam Download PDFInfo
- Publication number
- CN111300154A CN111300154A CN201911197234.9A CN201911197234A CN111300154A CN 111300154 A CN111300154 A CN 111300154A CN 201911197234 A CN201911197234 A CN 201911197234A CN 111300154 A CN111300154 A CN 111300154A
- Authority
- CN
- China
- Prior art keywords
- nut
- screw
- lifting
- detection
- dish
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q27/00—Geometrical mechanisms for the production of work of particular shapes, not fully provided for in another subclass
Landscapes
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
The invention relates to a screw mechanism for lifting a hierarchical positioning beam, which comprises a lifting device and a detection device, wherein the lifting device comprises a screw rod, a screw rod and a screw rod; the lifting device is connected with the detection device; the lifting device comprises a lead screw 20, a feed screw 21, a base 22, a measuring pin 23, a flange 24, a lubricating branch 25 and a lubricating channel 26; the detection device comprises a detection rod 30, a dish ornament lower cover 31, a dish ornament 32, an upper cover 33, an upper detection switch 34, a fuse 35 and a lower detection switch 36. The nut mechanism for lifting the graded positioning beam has the advantages of compact structure, high control precision and self-protection function, the nut is tensioned by a saucer, the tensioning force is automatically detected by a detection switch, the screw and the feed nut are completely relieved after the beam is lifted in place, and the feed nut does not influence the lifting precision of the beam and the graded positioning precision. The fasteners are all outside the integral structure, and the disassembly and the replacement are convenient. The feed screw wear loss automatic detection is safe and reliable.
Description
Technical Field
The invention relates to the field of large vertical lathes and turning and milling composite machine tools, in particular to a nut mechanism suitable for lifting a graded positioning cross beam.
Background
The lifting operation reliability and precision stability of the cross beam of a large vertical lathe and a turning and milling composite machine tool are of great importance to the quality of processed products. At present, a crossbeam lifting screw nut of a large-scale vertical lathe and a turning and milling composite machine tool adopts a T-shaped screw nut, the screw nut is generally made of 45# -T265 or 45# -C35, a feed screw nut is ZQSn6-6-3, the screw nut is soft in material and needs to be replaced periodically as a loss part. A single lead screw is provided with a feed nut and a fuse nut. .
The current mainstream hierarchical positioning crossbeam control mode is that after the crossbeam runs to the required gear, the lead screw reverses half a turn to a turn, so as to ensure that the lead screw is separated from the meshing point of the nut, and the weight of the crossbeam is completely shared on the hierarchical positioning block of the upright post. The control is mostly controlled by a PLC program, and after the control is in place, the beam lifting motor obtains a reverse signal, so that the meshing point of the screw rod and the feed screw nut is disengaged. However, the control mode cannot automatically adjust the reverse rotation angle of the lead screw along with the abrasion of the feed screw nut, and cannot ensure the complete force unloading of the beam lead screw nut, so that the lifting precision of the beam is influenced by the precision of the lead screw nut. Because the function of automatically detecting the abrasion loss is not available, the abrasion loss of the feeding screw nut needs to be regularly checked, otherwise, the damage of the feeding screw nut easily causes serious accidents such as the falling off of a cross beam, the breaking and the like, the use safety of a machine tool is seriously influenced, and the serious economic loss and the casualties are caused to factory equipment.
Disclosure of Invention
Aiming at the main characteristics of the lifting of the graded positioning type cross beam, the invention provides a nut mechanism for lifting the graded positioning cross beam, and the nut mechanism has the characteristics of high precision and self-protection function. The invention can effectively solve the problems that the screw rod and the screw nut can not completely unload force in the lifting process of the cross beam, the abrasion loss of the feed screw nut can not be automatically detected, and the like. The mechanism has complete detection functions, protects the detection devices from being arranged on the periphery, is convenient to disassemble and replace, has low maintenance cost, and can effectively avoid the lifting precision of the cross beam from being influenced by the screw rod and the nut.
In order to solve the above disadvantages, the invention adopts the technical scheme that:
a nut mechanism for lifting a graded positioning beam comprises a lifting device and a detection device; the lifting device is connected with the detection device; the lifting device comprises a lead screw, a feed screw nut, a base, a measuring pin, a flange, a lubricating shunt and a lubricating channel; the feed screw nut and the flange are sequentially sleeved on the screw rod; the flange is arranged at the lower end of the feeding nut; the base horizontally fixes the feeding screw; the pin is vertically and downwards fixed on the flange; one side of the feeding screw nut is provided with the lubricating branch and the lubricating channel; the lubricating branch is communicated with the lubricating channel; the detection device comprises a detection rod, a dish ornament lower cover, a dish ornament, an upper cover, an upper detection switch, a fuse and a lower detection switch; the lower detection switch is fixed on the outer surface of the fuse nut; the flange, the base and the upper cover are provided with through holes which are coaxial with each other; the detection rod penetrates through the through hole and is fixed on the fuse nut; the upper detection switch is arranged on the lathe; the axes of the detection head of the upper detection switch and the detection rod are on the same straight line; the dish ornament lower cover is arranged at the lower end of the dish ornament; the upper cover is arranged at the upper part of the dish ornament; the fuse nut is arranged at the lower end of the flange.
Further, the lubricating branches are a plurality of branches.
Further, the axis of the pin is in the same straight line with the detection head of the lower detection switch.
Further, the initial clearance between the fuse nut and the flange is a lead screw pitch.
Furthermore, one end of the pin is of a thread structure; and the thread structure of the pin is matched with the thread hole on the flange.
Further, the lower cover of the disk ornament, the disk ornament and the upper cover are sleeved on the screw rod; the dish ornament lower cover is arranged on the base.
Compared with the prior art, the method of the invention has the following beneficial effects:
the screw mechanism for lifting the graded positioning cross beam can effectively solve the problems that a screw and a screw cannot completely unload force in the lifting process of the cross beam, the abrasion loss of a feeding screw cannot be automatically detected and the like. The invention has compact structure, high control precision and self-protection function, uses the butterfly tensioning screw nut, automatically detects the tensioning force by the detection switch, completely unloads the force of the screw nut and the feeding screw nut after the beam is lifted in place, and the feeding screw nut does not influence the lifting precision of the beam and the grading positioning precision. The fasteners are all outside the integral structure, so that the disassembly and the replacement are convenient, and the maintenance cost is low. The feed screw wear loss automatic detection is safe and reliable, and the influence of the screw on the lifting precision of the cross beam can be effectively avoided.
Drawings
FIG. 1 is a cross-sectional view of a beam lifting nut structure of the present invention.
FIG. 2 is a right side view of the beam lifting nut of the present invention.
FIG. 3 is a schematic view of the present invention in conjunction with a beam.
Fig. 4 is a schematic view (right view) of the feeding screw loosening detection of the present invention.
In the figure, 10-beam; 20-a lead screw; 21-feeding a screw; 22-a base; 23-measuring the pin; 24-flange, 25-lubrication shunt, 26-lubrication channel; 30-a detection rod; 31-dish decoration lower cover; 32-dish decoration; 33-upper cover; 34-upper detection switch; 35-fuse box, 36-lower detection switch.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "top," "bottom," "top," and the like are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In one embodiment, the screw mechanism for lifting the graded positioning beam comprises a lifting device and a detection device; the lifting device is connected with the detection device; the lifting device comprises a lead screw 20, a feed screw 21, a base 22, a measuring pin 23, a flange 24, a lubricating branch 25 and a lubricating channel 26; the feeding screw nut 21 and the flange 24 are sequentially sleeved on the lead screw 20; the flange 24 is arranged at the lower end of the feeding nut 21; the base 22 horizontally fixes the feeding screw 21; the flange 24 is vertically downwards fixed with the pin 23; one side of the feeding screw nut 21 is provided with the lubricating branch 25 and the lubricating channel 26; the lubrication branch 25 is communicated with the lubrication channel 26; the detection device comprises a detection rod 30, a dish ornament lower cover 31, a dish ornament 32, an upper cover 33, an upper detection switch 34, a fuse nut 35 and a lower detection switch 36; the lower detection switch 36 is fixed on the outer surface of the fuse nut 35; the flange 24, the base 22 and the upper cover 33 are provided with through holes coaxial with each other; the detection rod 30 passes through the through hole and is fixed on the fuse nut 35; the upper detection switch 34 is arranged on the lathe; the axes of the detection head of the upper detection switch 34 and the detection rod 30 are on the same straight line; the dish-cover lower cover 31 is arranged at the lower end of the dish cover 32; the upper cover 33 is arranged at the upper part of the dish ornament 32; the fuse nut 35 is disposed at a lower end of the flange 24.
The screw mechanism for lifting the graded positioning cross beam can effectively solve the problems that a screw and a screw cannot completely unload force in the lifting process of the cross beam, the abrasion loss of a feeding screw cannot be automatically detected and the like. The invention has compact structure, high control precision and self-protection function, uses the butterfly tensioning screw nut, automatically detects the tensioning force by the detection switch, completely unloads the force of the screw nut and the feeding screw nut after the beam is lifted in place, and the feeding screw nut does not influence the lifting precision of the beam and the grading positioning precision. The fasteners are all outside the integral structure, so that the disassembly and the replacement are convenient, and the maintenance cost is low. The feed screw wear loss automatic detection is safe and reliable, and the influence of the screw on the lifting precision of the cross beam can be effectively avoided.
The nut mechanism for lifting the graded positioning cross beam is described below with reference to specific embodiments to further understand the inventive concept of the nut mechanism for lifting the graded positioning cross beam. Referring to fig. 1 to 3, in an embodiment, a nut mechanism for lifting a positioning beam in stages includes a lifting device and a detecting device; the lifting device is connected with the detection device; the lifting device comprises a lead screw 20, a feed screw 21, a base 22, a measuring pin 23, a flange 24, a lubricating branch 25 and a lubricating channel 26; the feeding screw nut 21 and the flange 24 are sequentially sleeved on the lead screw 20 from top to bottom; the flange 24 is fixed at the lower end of the feed nut 21 through screws; the base 22 horizontally fixes the feeding screw 21; the flange 24 is vertically downwards fixed with the pin 23; one end of the pin 23 is of a threaded structure; the thread structure of the pin 23 is matched with the thread hole on the flange 26; one side of the feeding screw nut 21 is provided with the lubricating branch 25 and the lubricating channel 26; the lubricating branches 27 are provided with a plurality of branches; the lubricating branch 25 is communicated with the lubricating channel 26, so that enough lubricating oil can be supplied between the feeding nut 21 and the lead screw 20 during the lifting process of the cross beam 10; the detection device comprises a detection rod 30, a dish ornament lower cover 31, a dish ornament 32, an upper cover 33, an upper detection switch 34, a fuse nut 35 and a lower detection switch 36; the lower detection switch 36 is fixed on the outer surface of the fuse nut 35; the flange 24, the base 22 and the upper cover 33 are provided with through holes coaxial with each other; one end of the detection rod 30 is of a threaded structure, and one end of the detection rod 30 with the threaded structure sequentially penetrates through holes in the upper cover 33, the base 22 and the flange 24; the detection rod 30 is matched with the threaded hole on the fuse nut 35 and fixed on the fuse nut 35; the upper detection switch 34 is arranged on the lathe; the axes of the detection head of the upper detection switch 34 and the detection rod 30 are on the same straight line; the dish-cover lower cover 31 is arranged at the lower end of the dish cover 32; the upper cover 33 is arranged at the upper part of the dish ornament 32; the fuse nut 35 is arranged at the lower end of the flange 24; a reserved gap of 5.3-5.7 mm is formed between the fuse nut 35 and the flange 24; the fuse nut 24 is arranged opposite to the feed nut 21; the axis of the pin 23 is on the same straight line with the detection head of the lower detection switch 35; the dish-decoration lower cover 31, the dish decoration 32 and the upper cover 33 are sleeved on the screw rod 20; the dish bottom cover 31 is arranged on the base 22.
In this embodiment, referring to fig. 3, the nut mechanism for positioning the lifting of the beam in stages according to the present invention is installed on two sides (the other side is not shown) of the beam 10, the lead screw 20 passes through the beam 10, and the upper cover 33 is fixed with the beam 10 by a screw, and the beam 10 moves along with the movement of the feed nut 21.
In the present embodiment, please refer to fig. 4, as shown in fig. 4, an upper detection switch 34 is disposed on the lathe, and the upper detection switch 34 does not move along with the beam 10; the axes of the detection head of the upper detection switch 34 and the detection rod 30 are on the same straight line.
In an embodiment, referring to fig. 1 to 4, the working process of the screw mechanism for lifting the positioning beam in stages specifically includes the following steps:
when the cross beam 10 ascends, the lead screw 20 rotates forwards, and the fuse nut 35, the feed nut 21 and the flange 24 ascend together with the lead screw 20; when the detection rod 30 touches the detection head of the upper detection switch 34, the upper detection switch 34 is closed, at this time, the lead screw 20 stops rotating upwards, the lead screw 20 starts rotating reversely, and the lead screw 20 drives the fuse nut 35, the feed nut 21 and the flange 24 to move downwards together. When the detection rod 30 is separated from the detection point of the upper detection switch 34, the engagement point of the feed screw 21 and the lead screw 20 is separated, the weight of the beam 10 is shared on the grading positioning block of the machine tool upright column, and the beam 10 is lifted to the right position and finally stops moving.
The function of the fuse nut 24 is to prevent the feed nut 21 from being worn excessively and not replaced in time, which leads to the accident that the beam 10 falls. When the feed screw 21 is worn, a reserved gap between the fuse nut 35 and the flange 24 is reduced, an initial installation gap is 5.5mm, when the gap value is 4.5mm, the tooth form of the screw nut 24 is worn by 1mm, and when the worn feed screw 21 is continuously used until the detection pin 23 contacts with the detection head of the lower detection switch 36, the lower detection switch 36 is closed, and at this time, the beam 10 is locked and cannot lift.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. A nut mechanism for lifting a graded positioning beam is characterized by comprising a lifting device and a detection device;
the lifting device is connected with the detection device;
the lifting device comprises a lead screw, a feed screw nut, a base, a measuring pin, a flange, a lubricating shunt and a lubricating channel; the feed screw nut and the flange are sequentially sleeved on the screw rod; the flange is arranged at the lower end of the feeding nut; the base horizontally fixes the feeding screw; the pin is vertically and downwards fixed on the flange; one side of the feeding screw nut is provided with the lubricating branch and the lubricating channel; the lubricating branch is communicated with the lubricating channel;
the detection device comprises a detection rod, a dish ornament lower cover, a dish ornament, an upper cover, an upper detection switch, a fuse and a lower detection switch; the lower detection switch is fixed on the outer surface of the fuse nut; the flange, the base and the upper cover are provided with through holes which are coaxial with each other; the detection rod penetrates through the through hole and is fixed on the fuse nut; the upper detection switch is arranged on the lathe; the axes of the detection head of the upper detection switch and the detection rod are on the same straight line; the dish ornament lower cover is arranged at the lower end of the dish ornament; the upper cover is arranged at the upper part of the dish ornament; the fuse nut is arranged at the lower end of the flange.
2. The screw mechanism for stepped positioning of beam lifting according to claim 1, wherein the lubricating shunt is several.
3. The screw mechanism for hierarchically positioning the lifting of a beam as claimed in claim 1, wherein the axis of the pin is collinear with the detection head of the lower detection switch.
4. The screw mechanism for stepped positioning of beam lifting according to claim 1, wherein one end of the pin is a threaded structure; and the thread structure of the pin is matched with the thread hole on the flange.
5. The screw mechanism for stepped positioning of beam lifting as claimed in claim 1, wherein said dish bell lower cover, said dish bell and said upper cover are sleeved on said lead screw; the dish ornament lower cover is arranged on the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911197234.9A CN111300154A (en) | 2019-11-30 | 2019-11-30 | Screw mechanism for lifting graded positioning cross beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911197234.9A CN111300154A (en) | 2019-11-30 | 2019-11-30 | Screw mechanism for lifting graded positioning cross beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111300154A true CN111300154A (en) | 2020-06-19 |
Family
ID=71157922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911197234.9A Pending CN111300154A (en) | 2019-11-30 | 2019-11-30 | Screw mechanism for lifting graded positioning cross beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111300154A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000154860A (en) * | 1998-11-19 | 2000-06-06 | Fuji Photo Film Co Ltd | Ball screw protection device and protection method therefor |
| CN201394748Y (en) * | 2009-05-20 | 2010-02-03 | 齐齐哈尔二机床(集团)有限责任公司 | Beam lifting screw abrasion alarming device |
| CN202045531U (en) * | 2011-04-29 | 2011-11-23 | 齐重数控装备股份有限公司 | Heavy-load static-pressure screw nut device |
| CN104354061A (en) * | 2014-11-06 | 2015-02-18 | 威海华东数控股份有限公司 | Cross beam collision protecting device |
| CN104440349A (en) * | 2014-11-13 | 2015-03-25 | 齐重数控装备股份有限公司 | Hierarchical positioning mechanism for cutting board |
| CN104493508B (en) * | 2015-01-12 | 2017-05-31 | 上海宁远精密机械有限公司 | A kind of accurate digital control self-powered platform |
-
2019
- 2019-11-30 CN CN201911197234.9A patent/CN111300154A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000154860A (en) * | 1998-11-19 | 2000-06-06 | Fuji Photo Film Co Ltd | Ball screw protection device and protection method therefor |
| CN201394748Y (en) * | 2009-05-20 | 2010-02-03 | 齐齐哈尔二机床(集团)有限责任公司 | Beam lifting screw abrasion alarming device |
| CN202045531U (en) * | 2011-04-29 | 2011-11-23 | 齐重数控装备股份有限公司 | Heavy-load static-pressure screw nut device |
| CN104354061A (en) * | 2014-11-06 | 2015-02-18 | 威海华东数控股份有限公司 | Cross beam collision protecting device |
| CN104440349A (en) * | 2014-11-13 | 2015-03-25 | 齐重数控装备股份有限公司 | Hierarchical positioning mechanism for cutting board |
| CN104493508B (en) * | 2015-01-12 | 2017-05-31 | 上海宁远精密机械有限公司 | A kind of accurate digital control self-powered platform |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020192798A1 (en) | Soft lifting apparatus, grinding wheel cutting apparatus, and cutting method | |
| WO2020192795A1 (en) | Grinding wheel disc device, grinding wheel cutting apparatus, and cutting method | |
| WO2020192797A1 (en) | Automatic chuck device, grinding wheel cutting apparatus, and cutting method | |
| CN203437687U (en) | Circular mold inner-outer drilling numerically-controlled machine tool | |
| CN202779890U (en) | Uniaxial digital controlled drilling machine | |
| CN111300154A (en) | Screw mechanism for lifting graded positioning cross beam | |
| CN109049008A (en) | Truss robot repairs Z axis falling proof device | |
| EP3403760B1 (en) | Automatic device for locking tool-holders on lathes and machine tools | |
| CN208962048U (en) | Truss robot repairs Z axis falling proof device | |
| CN201807772U (en) | Device for milling patterns of roller of checkered plate | |
| CN209968942U (en) | Error detection device for screw machining | |
| CN111266604A (en) | Motor rotating shaft production and manufacturing batch processing machine | |
| CN213497598U (en) | Copper screw tightening device | |
| CN113290425A (en) | Device for detecting broken cutter in tool magazine of numerical control machine tool | |
| CN207580802U (en) | A kind of automatic material receiving system | |
| CN211277650U (en) | Automatic detection mechanism for broken cutter | |
| CN110449621B (en) | Safe type numerical control system of processing precision height | |
| CN113909894A (en) | Material-increasing and material-reducing double-station synchronous machining method and device for axial variable revolving body | |
| CN208644504U (en) | For producing the tooling of ship control cabinet | |
| CN109834552B (en) | Diamond wire drawing mould processing is with milling device | |
| CN111687460A (en) | Novel four-head coarse-fine integrated numerical control plane milling machine numerical control device | |
| CN205324776U (en) | Novel safe radial drill | |
| CN201249367Y (en) | Broken cutter monitoring device | |
| CN204519341U (en) | A kind of tobacco filament cutter knife roller hoisting tool | |
| CN213702646U (en) | Screw mechanism for lifting graded positioning cross beam |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200619 |