CN202804191U - Precision single-column numerical control vertical lathe - Google Patents
Precision single-column numerical control vertical lathe Download PDFInfo
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- CN202804191U CN202804191U CN 201220324380 CN201220324380U CN202804191U CN 202804191 U CN202804191 U CN 202804191U CN 201220324380 CN201220324380 CN 201220324380 CN 201220324380 U CN201220324380 U CN 201220324380U CN 202804191 U CN202804191 U CN 202804191U
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- numerical control
- clamping device
- vertical lathe
- gear
- workbench
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Abstract
The utility model discloses a precision single-column numerical control vertical lathe which comprises a worktable, a speed change gear, a beam, a beam clamping device and a feeding device. The worktable is provided with a spindle fixing short spindle structure, and a crossed roller bearing is arranged on a spindle. A central shaft hole is arranged at the center of a base of the worktable, the spindle is screwed on the base of the worktable through an internal hexagonal screw, the proportion of the axial distance of the spindle between the central shaft hole of the base and each of two supporting positions of the crossed roller bearing to the diameter of the spindle is smaller than 1:2, and an inner ring and an outer ring of a roller in the crossed roller bearing are perpendicularly crossed at intervals. By the aid of the beam clamping device of the lathe, the beam can be fastened on a vertical column guide rail in a cutting state, cutting vibration is greatly reduced, and stability and precision retaining ability in the cutting state are improved. By the aid of the lathe, torsional rigidity of a lead screw is improved, and the influence on precision of a tool rest is reduced.
Description
Technical field
The utility model relates to a kind of machining vertical lathe, and particularly a kind of table base is simple in structure, but the gearbox overall pulling down, and use and maintenance is accurate Simple-column numerical control vertical lathe easily.
Background technology
The transmission layout form of vertical lathe is the thermal tracking structure take the workbench center as symmetry axis.Upright post base drops on the table base, i.e. the version of locating type.Formed by workbench, table base, main transmission gearbox, column, crossbeam, rail head, electric main shaft bistrique, protection, cooling device and electric and hydraulic system etc.Crossbeam is mobile at column, the double lead-screw lifting, and rail head moves horizontally at crossbeam (X-direction), ram move both vertically (Z-direction).
In the prior art, the Simple-column numerical control vertical lathe workbench adopts the rolling guide structure, radially adopts the high accuracy double row cylindrical roller bearing, axially adopts the high accuracy thrust ball bearing to make rolling guide.This workbench main shaft structural requirement installing space is larger, and complex structure need to axially add preload at main shaft bearing when assembling, and the main assembling experience by the workman of the size that loads is controlled, and is high to workman's competency profiling, and adjusts difficulty.And adopt the multiple bearing combination, high to the requirement on machining accuracy of each part, the accumulated error of whole system is larger after the assembling.In the lathe course of work, along with the rising of bearing temperature, the distortion of axis system will directly affect the precision of workbench.
In the prior art, the complex structure of Simple-column numerical control vertical lathe workbench, frock is high to workman's competency profiling, adjusts difficulty, and error is larger; The clamping device structure clamping force scope of crossbeam is little, and it is unreliable to clamp; The Accuracy of the torsional rigidity cutter setting frame of the ball-screw of feeding is very large; It is very inconvenient that main transmission box partly assembles and keeps in repair, and easily precision impacted.
Therefore, from the demand in domestic lathe market, for the high accuracy of Simple-column numerical control vertical lathe, high rigidity, high dynamic performance carry out improved require extremely urgent.
The utility model content
Technical problem to be solved in the utility model is, a kind of accurate Simple-column numerical control vertical lathe is provided, and has both solved the problem of lathe installing space demand, has solved again the problem that loads.Running accuracy and the bearing capacity of Lathe bench have been improved.The distortion that changes the work system that causes because of bearing temperature is very little.Gearbox is easy for installation, and the gap is easy to eliminate, and precision guarantees easily.Table base is simple in structure, and is easy to process, but lives the gearbox overall pulling down simultaneously, makes maintenance very convenient.The clamping device of the utility model lathe crossbeam can guarantee to be fastened on the column guide rail at the cutting state sill, has reduced greatly cutting vibration, has improved stationarity and the precision stability under the cutting state.The utility model lathe has improved the torsional rigidity of leading screw, in transmission, has reduced the impact of the precision of cutter setting frame.
For solving the problems of the technologies described above, the utility model provides a kind of accurate Simple-column numerical control vertical lathe, comprising: workbench, speed change gear, crossbeam, machine beam clamping device and feed arrangement.
Described workbench can adopt the short main axle structure of main shaft fixed; Can be provided with crossed roller bearing on the described main shaft.
The short main axle structure of described main shaft fixed refers to establish a central shaft hole by table base, main shaft by soket head cap screw closing on table base, and main shaft in the ratio of the axial distance of base central shaft hole and crossed roller bearing two supportings place and main shaft diameter less than 1: 2.
In the described crossed roller bearing, roller can the interval between inner ring and outer ring be crossed as 90 ° of modes and arranges; Described roller can be linear with raceway face and contact.
The table top of described workbench can be the T-shaped groove of standard, and configuration quadruplet standard claw.
Described accurate Simple-column numerical control vertical lathe can adopt the thermal tracking structure, and described thermal tracking structure refers to: take by the workbench center and perpendicular to the plane of crossbeam as the plane of symmetry, have identical thermal field and the structure of thermal deformation at the lathe left and right directions.
Described speed change gear may further include main-gear box, and described main-gear box is installed in the described table base; Described speed change gear may further include governing system, and described governing system adopts stepless speed regulation; Main motor and described main transmission box link by belt, keep off the bull gear that speed changes reach workbench through machinery three, are used for realizing stepless speed regulation in the described rotating speed of table scope.
Described mechanical three gear speed changes can automatically switch for three gear compensator pressures, can adopt interior external tooth zygote to connect, and the pressing position switch puts in place; Described mechanical three gear speed changes are come conversion rate by magnetic slide valve control speed change oil path in oil cylinder; On oil circuit control, further be provided with pressure switch, accumulator and hydraulic lock mechanism.
Described machine beam clamping device can be arranged on the described crossbeam; Described machine beam clamping device can be for adopting the clamping device of hydraulic pressure row cylinder; Hydraulic pressure drive piston moves in the described machine beam clamping device; Described machine beam clamping device clamping force can be controlled.
Described feed arrangement may further include: horizontal feed device and vertical feed apparatus; Described horizontal feed device further is provided with knife rest; Described horizontal feed device is arranged on described crossbeam right-hand member; Described vertical feed apparatus further is provided with vertical ram.
Described horizontal feed device can drive the ball-screw rotation that pitch is 12mm through 24: 48 synchronous cog belt reductions of speed by motor, by screw, drags knife rest and realizes horizontal feed and quick; Moving both vertically of described vertical ram can drive the ball-screw revolution that pitch is 12mm through 24: 48 synchronous cog belt reductions of speed by motor, and the ram that links together with the ball-screw screw is moved both vertically.
The accurate Simple-column numerical control vertical lathe of the utility model, applicable high-speed steel, carbide alloy and sintex, the various ferrous metal of turning, non-ferrous metal and part nonmetallic materials workpiece and grinding ferrous material workpiece.The utility model lathe has been realized than more high accuracy, higher rigidity, higher dynamic requirement of lathe of the prior art.Both solve the problem of lathe installing space demand, solved again the problem that loads.Running accuracy and the bearing capacity of Lathe bench have been improved.The distortion that changes the work system that causes because of bearing temperature is very little.Gearbox is easy for installation, and the gap is easy to eliminate, and precision guarantees easily.Table base is simple in structure, and is easy to process, but while main-gear box overall pulling down makes maintenance very convenient.The clamping device of the utility model lathe crossbeam can guarantee to be fastened on the column guide rail at the cutting state sill, has reduced greatly cutting vibration, has improved stationarity and the precision stability under the cutting state.The utility model lathe has improved the torsional rigidity of leading screw, in transmission, has reduced the impact of the precision of cutter setting frame.
Description of drawings
Fig. 1 is the workbench main shaft structure chart of the described accurate Simple-column numerical control vertical lathe of the utility model embodiment;
Fig. 2 is the speed change gear outside drawing of the described accurate Simple-column numerical control vertical lathe of the utility model embodiment;
Fig. 3 is the main-gear box structure chart of the described accurate Simple-column numerical control vertical lathe of the utility model embodiment;
Fig. 4 is the clamping device structure chart of the crossbeam of the described accurate Simple-column numerical control vertical lathe of the utility model embodiment.
The specific embodiment
The utility model lathe be one with Che Weizhu, take mill as auxiliary high accuracy, the NC vertical lathe of heavy cut.Can adopt the numerical control programming operation, but also hand push button operation.Maximum turning diameter 1600mm, maximum height of workpiece 1600mm, carrying 8t.Applicable high-speed steel, carbide alloy and sintex, the various ferrous metal of turning, non-ferrous metal and part nonmetallic materials workpiece and grinding ferrous material workpiece.
The utility model lathe has been realized than more high accuracy, higher rigidity, higher dynamic requirement of lathe of the prior art.
This kind lathe has at first solved the deficiency that exists in the workbench.
In the prior art, the Simple-column numerical control vertical lathe workbench adopts the rolling guide structure, radially adopts the high accuracy double row cylindrical roller bearing, axially adopts the high accuracy thrust ball bearing to make rolling guide.This workbench main shaft structural requirement installing space is larger, and complex structure need to axially add preload at main shaft bearing when assembling, and the main assembling experience by the workman of the size that loads is controlled, and is high to workman's competency profiling, and adjusts difficulty.And adopt the multiple bearing combination, high to the requirement on machining accuracy of each part, the accumulated error of whole system is larger after the assembling.In the lathe course of work, along with the rising of bearing temperature, the distortion of axis system will directly affect the precision of workbench.Therefore it is necessary improving for the workbench main shaft structure.
The utility model adopts the short main axle structure of main shaft fixed, at main shaft one cover high accuracy crossed roller bearing is housed.This bearing has compact conformation, and roller interval between inner ring and outer ring is crossed as 90 ° of modes and arranges, and can bear simultaneously radial load, axial load and tilting moment.Both solve the problem of installing space demand, solved again the problem that loads.Contact because roller is linear with raceway face, so bearing strain when bearing heavy duty is very little, thereby has improved running accuracy and the bearing capacity of workbench.Table surface adopts the unitary solid foundry goods, and the distortion that changes the work system that causes because of bearing temperature is very little.
Secondly, this lathe has solved the deficiency that exists in the main-gear box.
In the prior art, as main-gear box, this structure is when assembling and maintenance with workbench for Simple-column numerical control vertical lathe.Very inconvenient.The drive gap of each axle that causes because of the mismachining tolerance of each hole centre-to-centre spacing of table base in addition is difficult for adjusting, and be difficult to eliminate, and the vibration in transmission process will affect whole work system.
The utility model adopts gearbox to be installed in the interior structure of table base, and original power transmission shaft is installed in the gearbox.Easy for installation like this, the gap is easy to eliminate, and precision guarantees easily.Table base is cancelled each transmission axis hole, makes understructure simple, and is easy to process, but lives the gearbox overall pulling down simultaneously, makes maintenance very convenient.
Again, the utility model lathe has solved the deficiency that exists in the clamping device of crossbeam.
In the prior art, Simple-column numerical control vertical lathe is arranged in the clamping device of crossbeam, employing be that oil cylinder drives skewback and moves, thereby clamp clamped crossbeam and loosen.This structure is little because clamping area, and the local specific pressure of column guide rail is increased, and destroy easily the column guide rail level, thereby make the clamping force scope less, and unbalance stress cloth, it is unreliable to clamp.
The utility model adopts hydraulic pressure row cylinder clamping structure, this structure is because the clamping area is large, and clamping force is large, can guarantee to be fastened on the column guide rail at the cutting state sill, reduce greatly cutting vibration, improved stationarity and the precision stability under the cutting state.
At last, in the feeding transmission, that the utility model is selected is nominal diameter φ 80, and the ball-screw GQ8012 of helical pitch 12 has improved the torsional rigidity of leading screw greatly, in transmission, has reduced the impact of the precision of cutter setting frame.
Below in conjunction with the drawings and specific embodiments this utility model is elaborated.
As shown in Figure 1, be the workbench main shaft structure chart of the described accurate Simple-column numerical control vertical lathe of the utility model embodiment.Wherein, all parts is respectively: 101. table surfaces, 102. upper plates, 103. lower plates, 104. taper bolt, 105. pressing plates, 106. little soket head cap screws, 107. adjusting pads, 108. gear ring, 109. large soket head cap screws, 110. crossed roller bearings, 111. table bases.
Workbench adopts the short main axle structure of main shaft fixed, at main shaft one cover high accuracy crossed roller bearing 110 is housed and (is PSL912-304/P4,580 * 760 * 80 in the present embodiment; Certainly, in other embodiment, can be other model).This crossed roller bearing 110 has compact conformation, and roller interval between inner ring and outer ring is crossed as 90 ° of modes and arranges, and can bear simultaneously radial load, axial load and tilting moment.Contact because roller is linear with raceway face, so crossed roller bearing 110 strain when bearing heavy duty is very little, thereby has improved running accuracy and the bearing capacity of workbench.The T-shaped groove of table top 101 employing standards of workbench, and configuration quadruplet standard claw.For reducing the impact of workbench Thermal Distortion on Machining Precision, the utility model lathe adopts the multinomial measures such as thermal tracking structure, in order to reach workbench in the identical thermal deformation of left and right directions, guarantees the work of workbench long-term stability.
As shown in Figure 2, be the speed change gear outside drawing of the described accurate Simple-column numerical control vertical lathe of the utility model embodiment.Wherein, all parts is respectively: 201. main motors, 202. governing systems, 203. main transmission boxes, 204. belts, 205 position switch, 101 table surfaces, 111 table bases.
As shown in Figure 3, be the main-gear box structure chart of the described accurate Simple-column numerical control vertical lathe of the utility model embodiment.Wherein, parts are: 301 interior external tooth zygotes.
Main-gear box is installed in the table base 111, and main drive gear is driven by Z4-225-31,45kW speed adjustable DC motor, and governing system 202 adopts stepless speed regulation.Main motor 201 links by belt 204 with main transmission box 203, reaches workbench bull gear 108 through machinery three gear speed changes, realizes stepless speed regulation in the rotating speed of table scope, and governing system is Siemens 6RA70.
Three gear compensator pressures automatically switch, and external tooth zygote 301 connects in adopting, and speed change is reliable, and pressing position switch 205 puts in place.Three gear speed changes are come conversion rate by magnetic slide valve control speed change oil path in oil cylinder, for preventing the release of speed change oil cylinder, are provided with pressure switch, accumulator and hydraulic lock mechanism at oil circuit control, guarantee the speed change reliable operation.Whole gears adopt the quenching grinding process in the gearbox, and precision is 5 grades, has increased gear life, obtains high transmission accuracy and transmission efficiency, and reduce the vibration and noise of transmission.
Main-gear box connects the reliable location measure of employing with table base, to guarantee the accuracy of mesh of gear driving pair.
As shown in Figure 4, be the clamping device structure chart of the crossbeam of the described accurate Simple-column numerical control vertical lathe of the utility model embodiment.Wherein, all parts is respectively: 401. bite type taper thread straight couplings, 402. soket head cap screws, 403. end caps, 404. back-up rings, 405.O RunddichtringO, 406.B type KY sealing ring, 407. pistons.
Adopt hydraulic pressure row cylinder clamping device at crossbeam, what this device adopted is that oil pressure drive piston 407 moves, and lifting surface area is large, stressed even.The clamping force controllability.Guarantee to be fastened on the column guide rail at the cutting state sill, by a relatively large margin reduce cutting vibration.
The feed arrangement of the crossbeam of the described accurate Simple-column numerical control vertical lathe of the utility model embodiment is:
The crossbeam right-hand member is equipped with the horizontal feed mechanism of knife rest.Leading screw GQ8012-4/P3 drives the ball-screw rotation that pitch is 12mm by SIEMENS1FT6 type AC servo motor through 24: 48 synchronous cog belt reductions of speed, by screw, drags knife rest and realizes horizontal feed and quick.
Moving both vertically of rail head, drive ball-screw (GQ8012-4/P3) revolution that pitch is 12mm by SIEMENS 1FT6 type AC servo motor through 24: 48 synchronous cog belt reductions of speed, the ram that links together with the ball-screw screw is moved both vertically.
The used GQ6310 leading screw of such common lathe on year-on-year basis, the utility model lathe are large because of the rigidity of leading screw, distortion is little, so that transmission is better.Finally can make positioning accuracy reach 0.005mm/1000mm, repetitive positioning accuracy reaches 0.003mm/1000mm.
This intellectual property of primary enforcement that all are above-mentioned is not set restriction this new product of other forms of enforcement and/or new method.Those skilled in the art will utilize this important information, and foregoing is revised, to realize similar implementation status.But all modifications or transformation belong to the right of reservation based on the utility model new product.
The above, it only is preferred embodiment of the present utility model, be not to be the restriction of the utility model being made other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment does, still belongs to the protection domain of technical solutions of the utility model according to technical spirit of the present utility model.
Claims (6)
1. an accurate Simple-column numerical control vertical lathe is characterized in that, comprising: workbench, speed change gear, crossbeam, machine beam clamping device and feed arrangement;
Described workbench adopts the short main axle structure of main shaft fixed; Described main shaft is provided with crossed roller bearing; The short main axle structure of described main shaft fixed refers to: by described table base one central shaft hole is set, main shaft by soket head cap screw closing on table base, and main shaft in the ratio of the axial distance of base central shaft hole and crossed roller bearing two supportings place and main shaft diameter less than 1: 2;
Described speed change gear further comprises main-gear box, and described main-gear box is installed in the described table base; Described speed change gear further comprises governing system, and described governing system adopts stepless speed regulation; Main motor and described main transmission box link by belt, keep off the bull gear that speed changes reach workbench through machinery three, are used for realizing stepless speed regulation in the described rotating speed of table scope;
Described machine beam clamping device is arranged on the described crossbeam; Described machine beam clamping device is for adopting the clamping device of hydraulic pressure row cylinder; Hydraulic pressure drive piston moves in the described machine beam clamping device; Described machine beam clamping device clamping force can be controlled;
Described feed arrangement further comprises: horizontal feed device and vertical feed apparatus; Described horizontal feed device further is provided with knife rest; Described horizontal feed device is arranged on described crossbeam right-hand member; Described vertical feed apparatus further is provided with vertical ram.
2. described accurate Simple-column numerical control vertical lathe according to claim 1 is characterized in that in the described crossed roller bearing, roller interval between inner ring and outer ring is crossed as 90 ° of modes and arranges; Described roller is linear with raceway face and contacts.
3. described accurate Simple-column numerical control vertical lathe according to claim 1 and 2 is characterized in that the table top of described workbench is the T-shaped groove of standard, and configuration quadruplet standard claw.
4. described accurate Simple-column numerical control vertical lathe according to claim 1 and 2, it is characterized in that, described accurate Simple-column numerical control vertical lathe adopts the thermal tracking structure, described thermal tracking structure refers to: take by the workbench center and perpendicular to the plane of crossbeam as the plane of symmetry, have identical thermal field and the structure of thermal deformation at the lathe left and right directions.
5. described accurate Simple-column numerical control vertical lathe according to claim 1 and 2 is characterized in that, described mechanical three gear speed changes are that three gear compensator pressures automatically switch, and the external tooth zygote connects in adopting, and the pressing position switch puts in place; Described mechanical three gear speed changes are come conversion rate by magnetic slide valve control speed change oil path in oil cylinder; On oil circuit control, further be provided with pressure switch, accumulator and hydraulic lock mechanism.
6. described accurate Simple-column numerical control vertical lathe according to claim 1 and 2, it is characterized in that described horizontal feed device drives the ball-screw rotation that pitch is 12mm by motor through 24: 48 synchronous cog belt reductions of speed, by screw, drag knife rest and realize horizontal feed and quick; Moving both vertically of described vertical ram drives the ball-screw revolution that pitch is 12mm by motor through 24: 48 synchronous cog belt reductions of speed, and the ram that links together with the ball-screw screw is moved both vertically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220324380 CN202804191U (en) | 2012-07-06 | 2012-07-06 | Precision single-column numerical control vertical lathe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220324380 CN202804191U (en) | 2012-07-06 | 2012-07-06 | Precision single-column numerical control vertical lathe |
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| CN202804191U true CN202804191U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220324380 Expired - Fee Related CN202804191U (en) | 2012-07-06 | 2012-07-06 | Precision single-column numerical control vertical lathe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985446A (en) * | 2015-07-07 | 2015-10-21 | 东莞市毅豪精密机械有限公司 | High-precision direct-driven type rotary worktable |
| CN111765220A (en) * | 2020-06-03 | 2020-10-13 | 浙江日发精密机床有限公司 | Three-speed gear box structure |
-
2012
- 2012-07-06 CN CN 201220324380 patent/CN202804191U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985446A (en) * | 2015-07-07 | 2015-10-21 | 东莞市毅豪精密机械有限公司 | High-precision direct-driven type rotary worktable |
| CN104985446B (en) * | 2015-07-07 | 2018-05-29 | 东莞市毅豪精密机械有限公司 | High-accuracy direct-drive type rotary table |
| CN111765220A (en) * | 2020-06-03 | 2020-10-13 | 浙江日发精密机床有限公司 | Three-speed gear box structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20140706 |
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| EXPY | Termination of patent right or utility model |