CN202367514U - Nut rotary type lead screw nut transmission device and boring-milling machine - Google Patents
Nut rotary type lead screw nut transmission device and boring-milling machine Download PDFInfo
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- CN202367514U CN202367514U CN2011204471231U CN201120447123U CN202367514U CN 202367514 U CN202367514 U CN 202367514U CN 2011204471231 U CN2011204471231 U CN 2011204471231U CN 201120447123 U CN201120447123 U CN 201120447123U CN 202367514 U CN202367514 U CN 202367514U
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- boring
- gearing
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Abstract
The utility model discloses a nut rotary type lead screw nut transmission device and a boring-milling machine. The nut rotary type lead screw nut transmission device comprises a lead screw, a nut rotating part and a driving part, wherein the lead screw is fixed on the first external device; the nut rotating part is sleeved on the lead screw, can rotate on the lead screw while conducting rectilinear movement, and is connected with a second external device, and the second external device can move along with the nut rotating part, so as to move relative to the first external device; and the driving part is connected with the nut rotating part and used for driving the nut rotating part to rotate on the lead screw. The nut rotary type lead screw nut transmission device and the boring-milling machine, provided by the utility model, enable a large-load and long-stroke lead screw nut to transmit more quickly and accurately, and the quickness, the accuracy and the stability of internal transmission of the boring-milling machine are improved.
Description
Technical field
The utility model relates to a kind of feed screw nut transmission device, particularly a kind of nut rotary type leadscrew nut gearing and boring and milling machine.
Background technology
The structure that leading screw matches with feed screw nut is the feed screw nut drive mechanism; Be used to realize to rotate and rectilinear motion between conversion; This kind mechanism is widely used in plant equipment, in large-scale and heavy machine tool, in most cases is to adopt the motor-driven leading screw to be rotated especially; Move and be equipped with at the straight line on leading screw of the feed screw nut on the leading screw, feed screw nut does not rotate.It is not high that but the above-mentioned kind of drive converts straight-line precision to, causes the driving error accumulation of longaxones parts easily, and error is constantly increased; And, if the stroke of transmission is excessive, when just leading screw is long; In rotating process, the phenomenon of strong shake appears in leading screw easily, produces flexural deformation, vibration to cause associated workpiece; Have a strong impact on the precision and the Roughness Surface on Control of transmission and process operation, the fault that does not steadily also cause relevant device easily of transmission simultaneously.
With the console mode boring and milling machine is example; Move up and down (the Y axle) of main spindle box is through the feed screw nut transmission and realizes in the floor-type milling & boring machine, and it adopts the rotation of motor-driven leading screw mostly, realizes through the feed screw nut drive mechanism; Its movement velocity is slow; Transmission rigidity is poor, and as things go, floor-type milling & boring machine is more and more faster to the requirement of the speed that main spindle box moves up and down.
Drive motors links to each other with leading screw through belt or gear reduction of speed; Realize moving up and down of main spindle box, because large floor boring and milling machine Y axle stroke is long, and the diameter of leading screw is also bigger; Himself can produce bigger inertia impact, influences transmission accuracy even damages parts; The leading screw rotation of length can cause the excessive problem of amount of deflection on the other hand, thereby influences the fast-response ability of whole lathe.The belt drives mode has response performance preferably comparatively speaking, but because there are limitation such as easy damage in belt itself, so belt transmission structure seldom is applied among this large-scale and heavy machine tool equipment of similar console mode boring and milling machine.
From the above mentioned; Feed screw nut transmission mechanism in the large-scale and heavy machine tool equipment is demanded urgently improving; Given this plant situation, the design people borrows its technical experience of association area and abundant professional knowledge for many years, and constantly research and development improve; And, the nut rotary type leadscrew nut gearing of the utility model and the technical scheme of boring and milling machine have been proposed through a large amount of practical proofs.
The utility model content
The purpose of the utility model is to provide a kind of nut rotary type leadscrew nut gearing, can make the transmission of feed screw nut have fast-response and accuracy.
Another purpose of the utility model is to provide a kind of boring and milling machine, has above-mentioned nut rotary type leadscrew nut gearing, guarantees rapidity, accuracy and the stability of the inner transmission of boring and milling machine.
To achieve these goals, the utility model provides a kind of nut rotary type leadscrew nut gearing, comprising: leading screw is fixedly set in first external device (ED); The nut rotating part; Be sheathed on the said leading screw; Said nut rotating part can rotate on said leading screw and move as straight line simultaneously; Said nut rotating part is connected with second external device (ED), and said second external device (ED) can move with said nut rotating part, thereby realizes that said second external device (ED) moves relative to said first external device (ED); Drive division links to each other with said nut rotating part, and said drive division is used to drive said nut rotating part and on said leading screw, rotates.
Preferably, above-mentioned nut rotary type leadscrew nut gearing, wherein, said nut rotating part comprises: feed screw nut, be sheathed on the said leading screw and with said leading screw bolt, said feed screw nut can rotate on said leading screw and straight line moves; Travelling gear is sheathed on the said leading screw, and with said feed screw nut Joint, said travelling gear can rotate with said feed screw nut synchronously.
Preferably; Above-mentioned nut rotary type leadscrew nut gearing; Wherein, said second external device (ED) is connected with said travelling gear, is provided with bearing between said second external device (ED) and the travelling gear; The inside and outside circle of said bearing connects said second external device (ED), travelling gear respectively, and said second external device (ED) can be rotated relative to said travelling gear.
Preferably; Above-mentioned nut rotary type leadscrew nut gearing wherein, is provided with nut seat between the inner ring of said bearing or outer ring and said second external device (ED); The inner ring of said bearing or outer ring are fixed in said nut seat, and said nut seat then is fixed in said second external device (ED).
Preferably, above-mentioned nut rotary type leadscrew nut gearing, wherein, said first external device (ED) is the boring and milling machine pedestal, and said leading screw vertically is arranged on the said boring and milling machine pedestal, and said second external device (ED) is the boring and milling machine main spindle box.
Preferably, above-mentioned nut rotary type leadscrew nut gearing, wherein, said drive division comprises motor, the said travelling gear of the driving gear drives of said motor rotates.
Preferably, above-mentioned nut rotary type leadscrew nut gearing, wherein, said travelling gear is a clearance elimination gear.
Preferably, above-mentioned nut rotary type leadscrew nut gearing, wherein, said drive division comprises a gearbox, said gearbox further comprises: casing is fixed on the said nut seat; Change-speed gearing, that can rotate is arranged in the said casing, and a side of said change-speed gearing is meshed with the driven wheel of said motor, and opposite side is meshed with said travelling gear.
Preferably; Above-mentioned nut rotary type leadscrew nut gearing; Wherein, said nut rotary type leadscrew nut gearing also comprises a shield plate, and said shield plate is arranged on the said nut seat and covers at the said travelling gear outside; This shield plate 5 can move with said nut rotating part straight line, thinks that said nut rotating part internal structure provides defencive function.
To achieve these goals; The utility model also provides a kind of boring and milling machine; Have boring and milling machine pedestal and main spindle box to be gone up and down, wherein, said boring and milling machine comprises above-mentioned nut rotary type leadscrew nut gearing; Said first external device (ED) is the boring and milling machine pedestal, and second external device (ED) is a main spindle box.
From the above, nut rotary type leadscrew nut gearing of the utility model and boring and milling machine have advantage and characteristics:
1, it is motionless that the nut rotary type leadscrew nut gearing of the utility model keeps leading screw; And make mode realize transmission through driving the feed screw nut rotation; Compared with prior art; Improve rapidity, accuracy and the stability of transmission to a great extent, and can be applicable to the situation that the transmission stroke is long.
2, the boring and milling machine of the utility model will be to be moved main spindle box and feed screw nut are connected with; The effect of the nut rotary type leadscrew nut gearing through the utility model; Effectively the driving main shaft case moves up and down; Owing to do not need as rotational lead screw in the prior art,, guarantee the stable and safety of transmission so can guarantee fast-response, accuracy and the heavy load property of transmission.
3, nut rotary type leadscrew nut gearing of the utility model and boring and milling machine can be realized rotating and straight-line conversion with simple structure; Thereby the parts that the straight line moving mass is bigger; Like main spindle box etc., promoted the load of drive mechanism, the transmission moment of torsion that can bear is big.
4, nut rotary type leadscrew nut gearing of the utility model and boring and milling machine are through improving structure; Make transmission more accurately with steady; Especially as far as large-scale, heavy machine tool equipment,, can effectively improve the machining accuracy and the surface roughness of part like boring and milling machine.
Description of drawings
Fig. 1 is the utility model nut rotary type leadscrew nut gearing structural representation;
Fig. 2 is that second external device (ED) is connected sketch map with transmission device the utility model nut rotating part;
Fig. 3 is that the utility model nut rotary type leadscrew nut gearing is used sketch map.
The main element label declaration:
10 first external device (ED)s
20 second external device (ED)s
1 leading screw
2 nut rotating parts
21 feed screw nuts
22 travelling gears
23 bearings
24 nut seats
4 drive divisions
41 motors
42 driven wheels
43 gearboxes
431 casings
432 change-speed gearings
5 shield plates
The specific embodiment
Understand for technical characterictic, purpose and effect to the utility model have more clearly, contrast the specific embodiment of description of drawings the utility model, but it is merely preferred embodiment, is not used for limiting the essential scope of the utility model at present.What be worth proposition is; The nut rotary type leadscrew nut gearing of the utility model is applicable to multiple field; For example the transmission stroke is long, bigger or the like a series of situation of driven loads; Being not limited in and being applied to boring and milling machine, and concisely clear on explaining hereinafter, only is to be preferred embodiment to be applied to boring and milling machine.
Please refer to Fig. 1, Fig. 2 and Fig. 3; Wherein Fig. 1 is the utility model nut rotary type leadscrew nut gearing structural representation; Fig. 2 is that second external device (ED) is connected sketch map with transmission device the utility model nut rotating part, and Fig. 3 is that the utility model nut rotary type leadscrew nut gearing is used sketch map, and is as shown in the figure; The nut rotary type leadscrew nut gearing of the utility model mainly comprises: leading screw 1 is fixedly set in first external device (ED) 10; Nut rotating part 2; Be sheathed on the leading screw 1, can on leading screw 1, rotate and move as straight line simultaneously, nut rotating part 2 is connected with second external device (ED) 20; Second external device (ED) 20 can move with nut rotating part 2, thereby realizes that second external device (ED) 20 moves relative to first external device (ED) 10; Drive division 4 links to each other with nut rotating part 2, is used for drive nut rotating part 2 and on leading screw 1, rotates.
Leading screw 1 can be selected conventional structure for use, and the leading screw surface is provided with helicitic texture.Leading screw 1 is fixedly arranged on first external device (ED) 10, and in the present embodiment, this first external device (ED) 10 is the boring and milling machine pedestal, and leading screw 1 vertically is arranged on the boring and milling machine pedestal.
Second external device (ED) 20 can be connected with feed screw nut 21, also can be with travelling gear 22 to be connected, in the present embodiment; Second external device (ED) 20 is to be connected with travelling gear 22; Between second external device (ED) 20 and travelling gear 22, be provided with bearing 23, the inside and outside circle of bearing 23 connects second external device (ED) 20 and travelling gear 22 respectively, so that second external device (ED) 20 can relatively rotate with travelling gear 22; Follow when nut rotating part 2 straight lines move at second external device (ED) 20 like this; Travelling gear 22 moves while rotating, and second external device (ED) 20 does not then rotate, and only doing up and down, straight line moves.Further preferred; In order to improve the stability of drive mechanism; Between the inner ring of bearing 23 or the outer ring and second external device (ED) 20, also can be provided with nut seat 24, that is to say that the inner ring of bearing 23 or outer ring are fixed in nut seat 24; Nut seat 24 then is fixed in second external device (ED) 20, through nut seat to reinforce the interaction relation between second external device (ED) 20 and the bearing 23.In the present embodiment, this second external device (ED) 20 is the boring and milling machine main spindle box.
Drive division 4 links to each other with nut rotating part 2; Be used to provide driving force that nut rotating part 2 is rotated on leading screw 1, in the present embodiment, drive division 4 comprises a motor 41; Driven wheel 42 on the motor shaft is meshed with travelling gear 22, thereby realizes the driving of 41 pairs of nut rotating parts 2 of motor.What be worth proposition is; In actual the use; Between the driven wheel 42 of motor and travelling gear 22, be easy to produce the gap, can influence normal transmission, so travelling gear 22 is preferably the use clearance elimination gear; To eliminate the gap between driven wheel 42 and the travelling gear 22, guarantee the normal operation of transmission.Further preferred, drive division 4 also can comprise a gearbox 43, gearbox 43 be connected with in nut rotating part 2; Can with nut rotating part 2 together straight line move, the output speed that gearbox 43 is used for conversion motor 41 passes to again, in the present embodiment; Gearbox 43 is arranged on the nut seat 24; Gearbox 43 comprises a casing 431, and this casing 431 is fixed on the nut seat 24, is provided with change-speed gearing 432 in the casing 431; Change-speed gearing 432 is arranged in the gear box 431 through parts such as gear shaft and bearings and can rotates, and conventional structure repeats no more.One side of change-speed gearing 432 is meshed with the driven wheel 42 of motor; Opposite side and travelling gear 22 engagements, the driving rotating speed through change-speed gearing 432 adjustment motor outputs passes to travelling gear 22 again; With the rotating speed of control nut rotating part 2, further control its translational velocity.What generally speaking, change-speed gearing played is the effect of slowing down.
In addition; The nut rotary type leadscrew nut gearing of the utility model also can comprise a shield plate 5; This shield plate 5 covers at travelling gear 22 outsides and is arranged on the nut seat 24; This shield plate 5 can be moved with nut rotating part 2 straight lines, and the internal structure that shield plate 5 is used to nut rotating part 2 provides defencive function, avoids impurity to fall into the nut rotating part 2 inner transmission faults that cause simultaneously.
Briefly explain the operation principle of the utility model nut rotary type leadscrew nut gearing below in conjunction with above-mentioned each figure; As shown in the figure, present embodiment is when rising or during the decline main spindle box; Starter motor 41; Driven wheel 42 rotation of motor is delivered to travelling gear 22 through change-speed gearing 432 with rotation, the rotating speed of transmission and turn to and can realize through the control motor.Feed screw nut 21 is affixed with travelling gear 22, will on leading screw 1, rotate synchronously, through the feed screw nut fit structure, makes nut rotating part 2 on leading screw 1, to move by straight line, rises or descends.And main spindle box is connected in nut rotating part 2 through parts such as bearing 23 and nut seats 24, makes nut rotating part 2 to rotate with respect to main spindle box, and main spindle box can rise or descend with nut rotating part 2 along lead screw straight-line.Utilize the nut rotary type leadscrew nut gearing of the utility model, can improve rapidity, accuracy and the stability of transmission to a great extent, the situation especially long, that driven loads is bigger the transmission stroke.
In addition, the utility model also provides a kind of boring and milling machine, and it comprises the nut rotary type leadscrew nut gearing of above-mentioned the utility model; Leading screw is fixed on the boring and milling machine pedestal, and main spindle box to be gone up and down is connected with in the nut rotating part, and the quality of main spindle box is bigger; And the stroke of its rising or decline is generally bigger; Through the utility model nut rotary type leadscrew nut gearing, can realize the feed screw nut transmission of this type of heavy load of main spindle box, long stroke, transmission is stable, safety, accurate; The structure of nut rotary type leadscrew nut gearing in this programme with and technique effect and the above embodiments of being had identical, repeat no more at this.
The above is merely the schematic specific embodiment of the utility model, is not in order to limit the scope of the utility model.Any those skilled in the art, equivalent variations of under the prerequisite of design that does not break away from the utility model and principle, having done and modification all should belong to the scope that the utility model is protected.
Claims (10)
1. a nut rotary type leadscrew nut gearing is characterized in that, said nut rotary type leadscrew nut gearing comprises:
Leading screw (1) is fixedly set in first external device (ED) (10);
Can go up the nut rotating part (2) that rotation is moved as straight line simultaneously at said leading screw (1), be sheathed on the said leading screw (1), can connect said nut rotating part (2) with second external device (ED) (20) that said nut rotating part (2) moves;
Drive said nut rotating part (2) and go up the drive division (4) that rotates, link to each other with said nut rotating part (2) at said leading screw (1).
2. nut rotary type leadscrew nut gearing according to claim 1 is characterized in that, said nut rotating part (2) comprising:
Feed screw nut (21), be sheathed on that said leading screw (1) is gone up and with said leading screw (1) bolt;
Travelling gear (22) is sheathed on the said leading screw (1), with said feed screw nut (21) Joint.
3. nut rotary type leadscrew nut gearing according to claim 2; It is characterized in that; Said second external device (ED) (20) is connected with said travelling gear (22); Be provided with bearing (23) between said second external device (ED) (20) and the travelling gear (22), the inside and outside circle of said bearing (23) connects said second external device (ED) (20), travelling gear (22) respectively.
4. nut rotary type leadscrew nut gearing according to claim 3; It is characterized in that; Be provided with nut seat (24) between the inner ring of said bearing (23) or outer ring and said second external device (ED) (20); The inner ring of said bearing (23) or outer ring are fixed in said nut seat (24), and said nut seat (24) then is fixed in said second external device (ED) (20).
5. according to each described nut rotary type leadscrew nut gearing in the claim 1 to 4; It is characterized in that; Said first external device (ED) (10) is the boring and milling machine pedestal, and said leading screw vertically is arranged on the said boring and milling machine pedestal, and said second external device (ED) (20) is the boring and milling machine main spindle box.
6. nut rotary type leadscrew nut gearing according to claim 4 is characterized in that, said drive division (4) comprises motor (41), and the driven wheel of said motor (42) drives said travelling gear (22) and rotates.
7. according to claim 2 or 6 described nut rotary type leadscrew nut gearings, it is characterized in that said travelling gear (22) is a clearance elimination gear.
8. nut rotary type leadscrew nut gearing according to claim 6 is characterized in that, said drive division (4) comprises a gearbox (43), and said gearbox further comprises:
Casing (431) is fixed on the said nut seat (24);
Change-speed gearing (432), that can rotate is arranged in the said casing (431), and a side of said change-speed gearing (432) is meshed with the driven wheel (42) of said motor (41), and opposite side is meshed with said travelling gear (22).
9. nut rotary type leadscrew nut gearing according to claim 4; It is characterized in that; Said nut rotary type leadscrew nut gearing also comprises a shield plate (5), and said shield plate is arranged on the said nut seat and covers at said travelling gear (22) outside.
10. boring and milling machine; Have boring and milling machine pedestal and main spindle box to be gone up and down, it is characterized in that, said boring and milling machine comprises each described nut rotary type leadscrew nut gearing of claim 1 to 9; Wherein said first external device (ED) is the boring and milling machine pedestal, and second external device (ED) is a main spindle box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204471231U CN202367514U (en) | 2011-11-11 | 2011-11-11 | Nut rotary type lead screw nut transmission device and boring-milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204471231U CN202367514U (en) | 2011-11-11 | 2011-11-11 | Nut rotary type lead screw nut transmission device and boring-milling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202367514U true CN202367514U (en) | 2012-08-08 |
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ID=46591237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204471231U Expired - Fee Related CN202367514U (en) | 2011-11-11 | 2011-11-11 | Nut rotary type lead screw nut transmission device and boring-milling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202367514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490066A (en) * | 2011-11-11 | 2012-06-13 | 上海三一精机有限公司 | Nut rotation type screw nut transmission device and boring-milling machine |
-
2011
- 2011-11-11 CN CN2011204471231U patent/CN202367514U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490066A (en) * | 2011-11-11 | 2012-06-13 | 上海三一精机有限公司 | Nut rotation type screw nut transmission device and boring-milling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20120808 Termination date: 20141111 |
|
| EXPY | Termination of patent right or utility model |