CN201244925Y - Stepless stroke variable apparatus of press - Google Patents
Stepless stroke variable apparatus of press Download PDFInfo
- Publication number
- CN201244925Y CN201244925Y CNU2008200564235U CN200820056423U CN201244925Y CN 201244925 Y CN201244925 Y CN 201244925Y CN U2008200564235 U CNU2008200564235 U CN U2008200564235U CN 200820056423 U CN200820056423 U CN 200820056423U CN 201244925 Y CN201244925 Y CN 201244925Y
- Authority
- CN
- China
- Prior art keywords
- gear
- planetary gear
- crank shaft
- eccentric sleeve
- crank axle
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- B30B1/26—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 cams, eccentrics, or cranks
- B30B1/266—Drive systems for the cam, eccentric or crank axis
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The utility model relates to a stepless variable stroke device for the press machine, comprising a crank shaft. The crank shaft is sheathed with an eccentric sleeve. The eccentric sleeve is provided with a planetary gear the extending in the radial direction. The planetary gear and the crank shaft are located on the same axial line. A central gear which has an annular gear and an external gear is sheathed on the planetary gear. The annular gear is meshed with the planetary gear. The external gear is meshed with a driving gear. The driving gear is a motor drive. The eccentric sleeve is also the planetary gear. When the crank shaft is rotated, the planetary gear is rotated with the crank shaft on one hand, and the planetary gear is auto-rotated along with the central gear on the other hand. When the central gear is rotated in clockwise or counter clockwise under the effect of the driving gear, the angular displace of the eccentric sleeve is adjusted, namely the angle degree of the eccentric sleeve when the crank shaft is located on the lower potential point. The travel of the slide block of the press machine can be changed under the condition that the operation is not stopped. The numerical control is realized.
Description
[technical field]
The utility model relates to stroke of a press adjusting device, specifically, is a kind of stepless variable stroke apparatus of forcing press, is applicable to all kinds of crank presses, can realize numerical controlization.
[background technology]
The stroke of crank press is the multiple of crank eccentricity value, change stroke and will change eccentricity value.See shown in the accompanying drawing 1 that normally eccentric bushing 02 of cover on crank axle 01 makes the stack of its eccentricity value, strengthen or reduce the crank eccentricity value, to reach the purpose that changes stroke.When crank axle 01 rotation, the connecting rod of embracing on eccentric bushing 02 promotes slide block, and the range of movement of slide block is exactly a stroke.Crank axle 01 with the structure that eccentric bushing 02 combines is: crank axle 01 end face has a groove 011, and eccentric bushing 02 end face is established six grooves 021, and eccentric bushing 02 has six positions to solidify respectively with crank axle 01, so there are six kinds of strokes to transfer.The operation that changes stroke is very complicated, and each variation all will be shut down the dismounting eccentric bushing, changes itself and the eccentric position of crank axle, and inefficiency, eccentricity value change and generally be divided into the 3-6 level, are difficult to segment.
[summary of the invention]
The utility model is that said structure is improved, and improves the control performance of punching machine stroke adjustment, can change the stroke of press ram under non-stop-machine situation, realizes numerical controlization.
The technical solution of the utility model is: a kind of stepless variable stroke apparatus of forcing press, comprise a crank axle, be with an eccentric bushing on the crank axle, it is characterized in that: off-centre is with one and radially expands the planetary gear that forms, and this planetary gear and crank axle are in same axis; Central gear with ring gear and external toothing is sleeved on the planetary gear, its ring gear and planetary gear engagement, its external toothing and driven wheel engagement; Driven wheel is by a motor-driven.
Eccentric bushing is held concurrently and is planetary gear in the utility model, planetary gear revolves round the sun with crank axle on the one hand when crank axle rotates, on the other hand with the central gear rotation, and central gear is done under the effect of driven wheel clockwise or is rotated counterclockwise, adjust the angular displacement of eccentric bushing, be position, the angle degree of crank axle eccentric bushing when descending gesture point, also just adjusted the stroke of crank eccentricity value and forcing press, its principle is:
Planetary revolution radius equals the crank axle eccentric throw in the utility model, so the relation between them must satisfy following formula: P=(MZ
2-MZ
1)/2, P=crank axle eccentric throw in the formula, M=module, Z
1=planetary gear the number of teeth, Z
2=central gear the number of teeth;
As center gear angular displacement J
Z2=0 o'clock, the eccentric bushing planetary gear was because of rotation generation angular displacement during the crank axle rotation, and this angular displacement meeting changes stroke regularly, and its relation satisfies following formula: J
Z1=J
Z0Z
2/ Z
1-J
Z0, J in the formula
Z1The angular displacement of=eccentric bushing, J
Z0The displacement of=crankshaft angular, Z
2=central gear the number of teeth, Z
1=planetary gear the number of teeth;
Crank axle and driven wheel are drive sprocket axle in the utility model, respectively by separately motor-driven, as crankshaft angular displacement J
Z0=0 o'clock, central gear and eccentric bushing planetary gear relation satisfied following formula: J
Z2Z
2=J
Z1Z
1, the symbol implication is the same in the formula;
Because the control stroke is to realize that by control eccentric bushing planetary gear and even central gear so when we have set crankshaft angular displacement and the angular displacement of eccentric bushing planetary gear, just can draw the central gear angular displacement, its relation satisfies following formula:
J
Z2=Z
1/ Z
2(JZ
1-J
Z0/ Z
1Z
2-J
Z0), the symbol implication is the same in the formula;
Use the above-mentioned relation formula, can work out computer program in advance, on crank axle and central gear, gather initial point and angular displacement data, computer is according to the stroke value of setting, calculate out the angular displacement correction value of central gear, and instruction orders about the motor correction rotating speed of driven wheel, drives central gear and finishes corrective action, finishes the stroke change procedure.The motor speed correction value be continuous be stepless adjustable, the angular displacement correction value of central gear also is stepless adjustable, the angular displacement of eccentric bushing planetary gear is stepless adjustable equally, as final result, the stroke of press ram is stepless adjustable.
[description of drawings]
Fig. 1 is the schematic diagram of existing stroke of a press adjusting device.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is that forcing press disposes schematic diagram of the present utility model.
[specific embodiment]
Below in conjunction with accompanying drawing embodiment of the present utility model is described.
See the stepless variable stroke apparatus of forcing press shown in Figure 2, comprise a crank axle 3, be with an eccentric bushing 4 on the crank axle 3, eccentric bushing 4 has one radially to expand the planetary gear 5 that forms, and this planetary gear 5 is in same axis with crank axle 3; Central gear 2 with ring gear and external toothing is sleeved on the planetary gear 5, its ring gear and planetary gear engagement, its external toothing and a driven wheel 1 engagement; The rotating shaft 11 of driven wheel 1 is by a motor-driven (not shown).
Fig. 3 is that forcing press disposes this schematic representation of apparatus, and in order to express clearly, this device shifts out the pressure fuselage and shows outward, and other structures of forcing press are the same with ordinary press.The rotating shaft 31 of crank axle 3 is driven by flywheel 6, and rotating shaft 11 is by a motor-driven (not shown), and rotating shaft 11, rotating shaft 31 are turned round separately.The rotating speed ratio of diaxon changes, and the stroke of crank eccentricity value and forcing press then changes thereupon.The rotating speed of ordinary circumstance lower rotary shaft 31 is constant, as long as change the rotating speed of rotating shaft 11.
Claims (1)
1, a kind of stepless variable stroke apparatus of forcing press comprises a crank axle, is with an eccentric bushing on the crank axle, it is characterized in that: off-centre is with one and radially expands the planetary gear that forms, and this planetary gear and crank axle are in same axis; Central gear with ring gear and external toothing is sleeved on the planetary gear, its ring gear and planetary gear engagement, its external toothing and driven wheel engagement; Driven wheel is by a motor-driven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200564235U CN201244925Y (en) | 2008-03-20 | 2008-03-20 | Stepless stroke variable apparatus of press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200564235U CN201244925Y (en) | 2008-03-20 | 2008-03-20 | Stepless stroke variable apparatus of press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201244925Y true CN201244925Y (en) | 2009-05-27 |
Family
ID=40728741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200564235U Expired - Fee Related CN201244925Y (en) | 2008-03-20 | 2008-03-20 | Stepless stroke variable apparatus of press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201244925Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102431207A (en) * | 2011-12-26 | 2012-05-02 | 江苏扬力集团有限公司 | Stepless automatic regulation structure for stroke amount of pressing machine |
| CN102514224A (en) * | 2011-12-26 | 2012-06-27 | 江苏扬力集团有限公司 | Automatic travel adjusting structure for press |
| CN103121300A (en) * | 2011-11-17 | 2013-05-29 | 四川康源医疗设备有限公司 | Pressure adjusting mechanism used in single-punch tablet press |
| CN103317071A (en) * | 2013-05-23 | 2013-09-25 | 西安交通大学 | Driving system of alternating current servo direct-driving type hot die forging press |
| CN105156589A (en) * | 2015-08-18 | 2015-12-16 | 卫才耀 | Force-amplifying mechanism capable of circularly transferring energy |
| CN106838156A (en) * | 2017-01-19 | 2017-06-13 | 曹琦雄 | Axis and non-eccentric axis moving axis from variable speed planetary gear and method |
-
2008
- 2008-03-20 CN CNU2008200564235U patent/CN201244925Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121300A (en) * | 2011-11-17 | 2013-05-29 | 四川康源医疗设备有限公司 | Pressure adjusting mechanism used in single-punch tablet press |
| CN102431207A (en) * | 2011-12-26 | 2012-05-02 | 江苏扬力集团有限公司 | Stepless automatic regulation structure for stroke amount of pressing machine |
| CN102514224A (en) * | 2011-12-26 | 2012-06-27 | 江苏扬力集团有限公司 | Automatic travel adjusting structure for press |
| CN102514224B (en) * | 2011-12-26 | 2014-10-08 | 江苏扬力集团有限公司 | Automatic travel adjusting structure for press |
| CN103317071A (en) * | 2013-05-23 | 2013-09-25 | 西安交通大学 | Driving system of alternating current servo direct-driving type hot die forging press |
| CN105156589A (en) * | 2015-08-18 | 2015-12-16 | 卫才耀 | Force-amplifying mechanism capable of circularly transferring energy |
| CN106838156A (en) * | 2017-01-19 | 2017-06-13 | 曹琦雄 | Axis and non-eccentric axis moving axis from variable speed planetary gear and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 Termination date: 20120320 |