CN111054803A - Main spindle box of punching machine - Google Patents
Main spindle box of punching machine Download PDFInfo
- Publication number
- CN111054803A CN111054803A CN201911247941.4A CN201911247941A CN111054803A CN 111054803 A CN111054803 A CN 111054803A CN 201911247941 A CN201911247941 A CN 201911247941A CN 111054803 A CN111054803 A CN 111054803A
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- China
- Prior art keywords
- dynamic balance
- assembly
- bearing assembly
- bearing
- main spindle
- 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.)
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- 238000004080 punching Methods 0.000 title claims abstract description 30
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 abstract description 7
- 230000003993 interaction Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
Abstract
The invention relates to the field of machine tool equipment, and provides a main shaft box of a punching machine, which comprises a main shaft box body, a main shaft, a first bearing assembly and a dynamic balance assembly, wherein the main shaft is connected with the main shaft box body through the first bearing assembly, and a connecting rod connecting part of the main shaft is in a cam shape; the balance weight assembly comprises a connecting assembly, a dynamic balance guide pillar, a dynamic balance module, a dynamic balance connecting rod, a dynamic balance shaft, a second bearing assembly and a third bearing assembly, the dynamic balance module is fixedly connected with one end of the dynamic balance guide pillar, the dynamic balance guide pillar can axially move and be arranged on the connecting assembly, the connecting assembly is fixedly connected with the top of the main shaft box body, the dynamic balance guide pillar is connected with the top of the main shaft box body through the connecting assembly, the gravity center of the main shaft box of the whole machine tool of the punching machine is guaranteed to be balanced through interaction of a cam of a main shaft and an axle sleeve cam, unbalance of the punching machine is reduced, stability of the whole punching.
Description
Technical Field
The invention relates to the field of machine tool equipment, in particular to a main spindle box of a punching machine.
Background
The main spindle box of the punching machine is an important component of the punching machine tool and is used for arranging a working spindle of the machine tool, transmission parts of the working spindle and corresponding additional mechanisms. The spindle box is a complex transmission part, the design of a spindle box transmission system and the processing technology of each part of the spindle box directly influence the performance of a machine tool, and the design and the precision of the spindle box are related to the processing precision and the processing efficiency of the whole machine tool.
CN107351180B discloses a high precision punching machine, frame; the male die and the hole die are arranged on the frame and can move relative to each other to complete the blanking of the sheet; the positioning rod is slidably arranged on the rack and can pass through the hole die to position the sheet positioned between the male die and the hole die; the hole die is provided with a through hole matched with the male die, and the positioning rod penetrates through the through hole to position the sheet; the lower end of the positioning rod is connected with a positioning block with an outer contour matched with the inner cavity of the sheet, a plurality of bulges are arranged on the male die, a cavity is arranged on the bulges, and a picking and placing assembly for picking and placing a punched finished product is arranged at the lower part of the positioning rod.
Because the punching machine is usually accompanied by sudden load change, impact, vibration and the like in the working process, the arrangement of components in the main shaft box is unreasonable, the unbalance of the punching machine is often increased, and the processing precision is influenced.
Disclosure of Invention
In the stamping process of the stamping machine, the main shaft rotates, and because the structures of the components such as the main shaft and the like are eccentric and the connecting rod component deviates downwards or upwards, the gravity center of the whole stamping machine suddenly deviates upwards or downwards in the upward and downward running process of the whole connecting rod, so that the whole stamping machine is unstable in the direction vertical to the ground, and the processing precision of workpieces is influenced.
In view of the above, the present invention is directed to a main spindle box of a punching machine, the main spindle box includes a main spindle box body, a main spindle, a first bearing assembly, and a dynamic balance assembly, the main spindle is connected to the main spindle box body through the first bearing assembly, and a connecting rod connecting portion of the main spindle is in a cam shape;
the balance weight assembly comprises a connecting assembly, a dynamic balance guide pillar, a dynamic balance module, a dynamic balance connecting rod, a dynamic balance shaft, a second bearing assembly and a third bearing assembly, the dynamic balance module is fixedly connected with one end of the dynamic balance guide pillar, the dynamic balance guide pillar can be axially movably arranged on the connecting assembly, the connecting assembly is fixedly connected with the top of the main spindle box body, and the dynamic balance guide pillar is connected with the top of the main spindle box body through the connecting assembly;
the dynamic balance connecting rod is connected with the dynamic balance module through the dynamic balance shaft, the dynamic balance connecting rod and the dynamic balance module are provided with the second bearing assembly, and the dynamic balance connecting rod is connected with the main shaft through the third bearing assembly.
Preferably, the third bearing assembly comprises a shaft sleeve and a third bearing, wherein the shaft sleeve is in a cam shape, and the maximum radius of the outer ring of the shaft sleeve is consistent with the mounting direction of the minimum radius of the connecting rod connecting part of the main shaft; the shaft sleeve is in interference fit with the third bearing inner ring, and the shaft sleeve is in interference fit with the main shaft.
Preferably, the counterweight assembly further comprises a first end cover and a second end cover, wherein one end of the dynamic balance shaft is detachably connected with the first end cover, and the other end of the dynamic balance shaft is detachably connected with the second end cover.
Preferably, the first end cover and the second end cover are cylindrical, and the radius of the first end cover and the radius of the second end cover are both larger than the diameter of the dynamic balance shaft.
Preferably, a lubricating oil passage is arranged inside the connecting rod connecting part of the main shaft.
Preferably, the first bearing assemblies are two groups, and a limiting shaft sleeve for keeping the relative axial position is arranged between the two groups of first bearing assemblies.
Preferably, the main shaft box of the punching machine further comprises a fourth bearing assembly and a sealing assembly, the main shaft is detachably connected with the edge of the main shaft box body through the fourth bearing assembly, and the sealing assembly is arranged between the main shaft and the fourth bearing assembly.
Preferably, the seal assembly is removably connected to the fourth bearing assembly.
Preferably, the fourth bearing assembly comprises a self-aligning roller bearing.
Preferably, the first and second bearing assemblies comprise self-aligning roller bearings.
The dynamic balance module is fixedly connected with one end of a dynamic balance guide post through a reasonable balance weight assembly arranged in a main shaft box of the punching machine, the dynamic balance guide post can be axially movably arranged on a connecting assembly, the connecting assembly is fixedly connected with the top of the main shaft box, the dynamic balance guide post is connected with the top of the main shaft box through the connecting assembly, a cam-shaped sleeve is arranged at the connecting position of a dynamic balance connecting rod and a main shaft, and when the connecting rod moves downwards and the gravity center of the main shaft moves downwards, the balance weight assembly is jacked up through the cam action on the sleeve between the connecting rod and the main shaft; when the connecting rod up moved, the main shaft focus up moved, pressed down the balanced heavy subassembly through the cam effect on the sleeve between connecting rod and the main shaft to guarantee that the focus of the whole lathe headstock of punching machine is balanced, thereby reduced the unbalance of punching machine, improved whole punching machine in perpendicular ground direction stability, and then improved the machining precision.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
fig. 1 is an assembly view of a main spindle box of a punching machine according to the present invention.
Description of reference numerals:
1 main shaft and 2 main shaft box
3 connecting assembly 4 dynamic balance guide pillar
5 first end cover of dynamic balance module 6
7 dynamic balance shaft 8 dynamic balance connecting rod
9 second bearing Assembly 10 second end cap
11 shaft sleeve 12 sealing assembly
13 fourth bearing assembly 14 first bearing assembly
15 third bearing Assembly 16 third bearing
17 connecting rod connecting part
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, unless otherwise specified, use of the terms "top, up, down, left, right" and "upper, lower, left, right" generally refer to the top, up, down, left, right and left as illustrated in the drawings; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to solve the problems that components in a main spindle box are unreasonable, unbalance of a punching machine is increased and machining precision is affected due to sudden load change, impact, vibration and the like in the working process of the punching machine, the main spindle box of the punching machine comprises a main spindle box body 2, a main spindle 1, a first bearing assembly 14 and a dynamic balance assembly, wherein the main spindle 1 is connected with the main spindle box body 2 through the first bearing assembly 14, and a connecting rod connecting part 17 of the main spindle 1 is in a cam shape;
the balance weight assembly comprises a connecting assembly 3, a dynamic balance guide post 4, a dynamic balance module 5, a dynamic balance connecting rod 8, a dynamic balance shaft 7, a second bearing assembly 9 and a third bearing assembly 15, wherein the dynamic balance module 5 is fixedly connected with one end of the dynamic balance guide post 4, the dynamic balance guide post 4 can be axially movably arranged on the connecting assembly 3, the connecting assembly 3 is fixedly connected with the top of the main shaft box body 2, and the dynamic balance guide post 4 is connected with the top of the main shaft box body 2 through the connecting assembly 3;
the dynamic balance connecting rod 8 is connected with the dynamic balance module 5 through the dynamic balance shaft 7, the dynamic balance connecting rod 8 and the dynamic balance module 5 are provided with the second bearing assembly 9, and the dynamic balance connecting rod 8 is connected with the main shaft 1 through the third bearing assembly 15.
In order to better ensure that when the connecting rod moves downwards along with the connecting rod connecting part 17 on the main shaft 1 in the working process of the punching machine, the maximum radius of the cam of the connecting rod connecting part 17 faces to the right lower part, the cam-shaped sleeve 11 in the third bearing assembly 15 is directed directly upward with its largest radius, namely, the orientation of the connecting rod connecting part 17 cam and the cam of the shaft sleeve 11 presents 180 degrees distribution, the dynamic balance connecting rod 8 is pushed upwards, the gravity center of the dynamic balance module 5 moves upwards, the dynamic balance module 5 and the main shaft 1 compensate each other, the gravity center of the main shaft box of the whole punching machine can be kept at the original position, the sudden-rising and sudden-falling deviation of the gravity center of the main shaft box can be better reduced, in a more preferred aspect of the present invention, the third bearing assembly 15 includes a sleeve 11, a third bearing 16, the sleeve 11 is cam-shaped, the maximum radius of the outer ring of the main shaft is consistent with the mounting direction of the minimum radius of the connecting rod connecting part 17 of the main shaft 1; in order to more reliably connect the sleeve 11 with the third bearing 16 and the main shaft 1, in a more preferable case of the present invention, the sleeve 11 is interference-fitted with an inner race of the third bearing 16, and the sleeve 11 is interference-fitted with the main shaft 1.
In order to better connect the dynamic balance module 5 and the dynamic balance shaft 7 to prevent the dynamic balance shaft 7 from moving axially, the second bearing assembly 9 is in interference fit with the dynamic balance connecting rod 8, in a more preferable case, the balance weight assembly further comprises a first end cover 6 and a second end cover 10, one end of the dynamic balance shaft 7 is detachably connected with the first end cover 6, the other end of the dynamic balance shaft is detachably connected with the second end cover 10, and for convenience of detachment and installation, one end of the dynamic balance shaft 7 is preferably in threaded connection with the first end cover 6, such as bolted connection and screwed connection.
In order to limit the displacement of the center of gravity of the entire headstock in the horizontal direction due to the relative movement of the dynamic balance shaft 7 in the axial direction, in a more preferred aspect of the present invention, the first head cover 6 and the second head cover 10 are cylindrical, and the radius of each of the first head cover 6 and the second head cover 10 is larger than the diameter of the dynamic balance shaft 7.
In order to improve the reliability of the sliding friction between the main shaft 1 and the connecting rod bush, in a more preferred aspect of the present invention, a lubricating oil passage is provided inside the connecting rod connecting portion 17 of the main shaft 1.
In order to limit the horizontal relative position and the axial runout of the spindle 1 in the spindle housing 2, in a more preferred aspect of the invention, the first bearing assemblies 14 are provided in two sets, and a limit sleeve for maintaining the relative axial position is provided between the two sets of first bearing assemblies 14.
For the sealing and lubrication of the whole headstock during the operation, in a more preferable case of the present invention, the main spindle head of the punching machine further comprises a fourth bearing assembly 13 and a sealing assembly 12, the edge of the main spindle 1 and the main spindle box body 2 is detachably connected through the fourth bearing assembly 13, the sealing assembly 12 is arranged between the main spindle 1 and the fourth bearing assembly 13, and for the convenience of disassembly and assembly and the sealing performance, the edge of the main spindle 1 and the main spindle box body 2 is more preferably connected through the fourth bearing assembly 13 by screw threads.
For the sealing performance of the whole headstock, in the more preferable case of the invention, the sealing assembly 12 is detachably connected with the fourth bearing assembly 13, and for the convenience of disassembly and assembly, the sealing assembly 12 is mounted on the bearing seat of the fourth bearing assembly 13 by screws.
In order to better position and ensure high precision, reliability and stability of the spindle motion, so that the bearing can bear radial load, can also bear bidirectional bearing load, has larger radial bearing force, has a self-aligning function, avoids the use of the bearing influenced by installation errors or shaft deflection, and has high vibration impact resistance, in a more preferred case of the invention, the bearing in the fourth bearing assembly 13 comprises a self-aligning roller bearing, and in a more preferred case, the bearing in the fourth bearing assembly 13 is a self-aligning roller bearing.
In order to better position and ensure high precision, reliability and stability of the spindle movement, in order to enable the bearing to bear radial load, bear bidirectional bearing load, have large radial bearing force, have a self-aligning function, avoid the use of the bearing affected by installation errors or shaft deflection, and have high vibration impact resistance, in a more preferred case of the invention, the bearings used in the first bearing assembly 14 and the second bearing assembly 9 comprise self-aligning roller bearings, and in a more preferred case, the bearings used in the first bearing assembly 14 and the second bearing assembly 9 are self-aligning roller bearings.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The main spindle box of the punching machine is characterized by comprising a main spindle box body (2), a main spindle (1), a first bearing assembly (14) and a dynamic balance assembly, wherein the main spindle (1) is connected with the main spindle box body (2) through the first bearing assembly (14), and a connecting rod connecting part (17) of the main spindle (1) is in a cam shape;
the balance weight assembly comprises a connecting assembly (3), a dynamic balance guide post (4), a dynamic balance module (5), a dynamic balance connecting rod (8), a dynamic balance shaft (7), a second bearing assembly (9) and a third bearing assembly (15), the dynamic balance module (5) is fixedly connected with one end of the dynamic balance guide post (4), the dynamic balance guide post (4) can be axially movably arranged on the connecting assembly (3), the connecting assembly (3) is fixedly connected with the top of the main shaft box body (2), and the dynamic balance guide post (4) is connected with the top of the main shaft box body (2) through the connecting assembly (3);
the dynamic balance connecting rod (8) is connected with the dynamic balance module (5) through the dynamic balance shaft (7), the dynamic balance connecting rod (8) is provided with the second bearing assembly (9) through the dynamic balance module (5), and the dynamic balance connecting rod (8) is connected with the main shaft (1) through the third bearing assembly (15).
2. The main spindle box of punching machines according to claim 1, characterized in that said third bearing assembly (15) comprises a sleeve (11), a third bearing (16), said sleeve (11) being cam-shaped with its largest radius of its outer periphery coinciding with the mounting direction of the smallest radius of said connecting rod connecting portion (17) of said main spindle (1); the shaft sleeve (11) is in interference fit with an inner ring of the third bearing (16), and the shaft sleeve (11) is in interference fit with the main shaft (1).
3. The main spindle box of a punching machine according to claim 1, wherein said balance weight assembly further comprises a first end cap (6) and a second end cap (10), one end of said dynamic balance shaft (7) being detachably connected to said first end cap (6) and the other end being detachably connected to said second end cap (10).
4. The punch headstock of claim 3, wherein the first end cap (6) and the second end cap (10) are cylindrical, and the radius of each of the first end cap (6) and the second end cap (10) is greater than the diameter of the dynamic balance shaft (7).
5. The main spindle box of punching machines according to claim 1, characterized in that the connecting rod connecting part (17) of the main spindle (1) is internally provided with a lubricating oil passage.
6. The main spindle box of a punching machine according to claim 1, characterized in that the first bearing assemblies (14) are two groups, and a limit sleeve for maintaining the relative axial position is arranged between the two groups of first bearing assemblies (14).
7. A punch headstock according to claim 1, further comprising a fourth bearing assembly (13), a seal assembly (12), the headstock (1) being detachably connected to an edge of the headstock (2) by the fourth bearing assembly (13), and the seal assembly (12) being provided between the headstock (1) and the fourth bearing assembly (13).
8. The punch headstock of claim 7, wherein the seal assembly (12) is removably connected to the fourth bearing assembly (13).
9. The punch headstock of claim 8, wherein the fourth bearing assembly (13) comprises a self-aligning roller bearing.
10. The main punch spindle head according to any one of claims 1 to 9, characterized in that the first bearing assembly (14), the second bearing assembly (9) comprise self-aligning roller bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911247941.4A CN111054803A (en) | 2019-12-09 | 2019-12-09 | Main spindle box of punching machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911247941.4A CN111054803A (en) | 2019-12-09 | 2019-12-09 | Main spindle box of punching machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111054803A true CN111054803A (en) | 2020-04-24 |
Family
ID=70299991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911247941.4A Pending CN111054803A (en) | 2019-12-09 | 2019-12-09 | Main spindle box of punching machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111054803A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU742161A1 (en) * | 1978-03-01 | 1980-06-25 | Экспериментальный научно-исследовательский институт кузнечно-прессового машиностроения | Mechanical press |
| JP2003053599A (en) * | 2001-08-08 | 2003-02-26 | Aida Eng Ltd | Driving device for press machine |
| CN201353886Y (en) * | 2009-02-14 | 2009-12-02 | 宁波米斯克精密机械工程技术有限公司 | High speed precision punch |
| CN201665007U (en) * | 2010-04-02 | 2010-12-08 | 扬州锻压机床集团有限公司 | Dynamic balance mechanism of a high-speed press |
| CN202805679U (en) * | 2012-09-20 | 2013-03-20 | 东莞市国一精密机械有限公司 | Single point open type punch press |
| CN202922993U (en) * | 2012-10-11 | 2013-05-08 | 东莞市国一精密机械有限公司 | Single gantry punching machine |
| EP3117988A1 (en) * | 2015-07-06 | 2017-01-18 | Andritz Technology and Asset Management GmbH | Press with variable mass balancing and method of adjusting this balancing mass |
| CN107520363A (en) * | 2017-07-20 | 2017-12-29 | 安徽炫弘数控科技有限公司 | A kind of lid forming machine processed at a high speed |
| CN207028286U (en) * | 2017-04-28 | 2018-02-23 | 扬力集团股份有限公司 | A kind of high-speed blanking press dynamic balance structure |
-
2019
- 2019-12-09 CN CN201911247941.4A patent/CN111054803A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU742161A1 (en) * | 1978-03-01 | 1980-06-25 | Экспериментальный научно-исследовательский институт кузнечно-прессового машиностроения | Mechanical press |
| JP2003053599A (en) * | 2001-08-08 | 2003-02-26 | Aida Eng Ltd | Driving device for press machine |
| CN201353886Y (en) * | 2009-02-14 | 2009-12-02 | 宁波米斯克精密机械工程技术有限公司 | High speed precision punch |
| CN201665007U (en) * | 2010-04-02 | 2010-12-08 | 扬州锻压机床集团有限公司 | Dynamic balance mechanism of a high-speed press |
| CN202805679U (en) * | 2012-09-20 | 2013-03-20 | 东莞市国一精密机械有限公司 | Single point open type punch press |
| CN202922993U (en) * | 2012-10-11 | 2013-05-08 | 东莞市国一精密机械有限公司 | Single gantry punching machine |
| EP3117988A1 (en) * | 2015-07-06 | 2017-01-18 | Andritz Technology and Asset Management GmbH | Press with variable mass balancing and method of adjusting this balancing mass |
| CN207028286U (en) * | 2017-04-28 | 2018-02-23 | 扬力集团股份有限公司 | A kind of high-speed blanking press dynamic balance structure |
| CN107520363A (en) * | 2017-07-20 | 2017-12-29 | 安徽炫弘数控科技有限公司 | A kind of lid forming machine processed at a high speed |
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Application publication date: 20200424 |