CN102756293B - Pressure plate clamping mechanism - Google Patents
Pressure plate clamping mechanism Download PDFInfo
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- CN102756293B CN102756293B CN201110111794.5A CN201110111794A CN102756293B CN 102756293 B CN102756293 B CN 102756293B CN 201110111794 A CN201110111794 A CN 201110111794A CN 102756293 B CN102756293 B CN 102756293B
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- pressure plate
- clamping mechanism
- cushion block
- pressing plate
- force application
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Abstract
The invention discloses a pressure plate clamping mechanism. The pressure plate clamping mechanism comprises a pressure plate and a force application rod penetrating the pressure plate, one end of the pressure plate is supported on a cushion block, the other end of the pressure plate is used for compressing a workpiece, the cushion block comprises a support part and an abdication part, the top surface of the support part is in contact with the pressure plate, the abdication part is provided with an abdication hole for enabling the force application rod to penetrate, and a gap is arranged between the top surface of the abdication part and the pressure plate. The pressure plate clamping mechanism disclosed by the invention can achieve the purpose of expanding the range of applications of ordinary clamping by reducing the spatial size of the cushion block. The force at the fulcrum of the cushion block can be balanced at the lower part of the whole cushion block by ingenious force conversion. Simultaneously, the pressure plate clamping mechanism can ensue that the force at the fulcrum can be close to the workpiece as far as possible and ensure the reasonable equilibrium of a lever. Compared with the ordinary clamping, the stress situation of theoretical calculation is the same. The pressure plate clamping mechanism disclosed by the invention has the characteristics of simple and compact structure, and stability and reliability in operation.
Description
Technical field
The invention belongs to machining center CNC and assist supporting frock clamp, relate to a kind of pressure plate clamping mechanism of the clamping workpiece for horizontal machine tool specifically.
Background technology
CNC technology widely uses in industry manufacture field.The workpiece manufactured is needed first to place on the table; Then by necessary clamping means, be fixed on T-slot work top; By the calibration repeatedly to workpiece benchmark, finally carry out machining.Current common way utilizes lever principle, and as Fig. 2, two power F1 and F2 utilize the balance of fulcrum confining force.Specific practice is: a margin sub-assembly 1 ' having screw thread can regulate height, by a large pressing plate 2 ', in the side channel being connected to workpiece 4 ' or plane, between margin sub-assembly 1 ' and the platen region of workpiece 4 ', install one group of screw again, be fixed, as Fig. 1 by nut 3 '.Generally in the left and right sides of workpiece, the similar fixture of two or four is at least installed, workpiece to be fixed on T-slot workbench 5 '.In addition, there are two square iron supported on the lower edge of horizontal machine tool, and plays load-bearing effect; Also there are two groups to support square iron below, make to maintain a certain distance between workpiece and T-slot workbench.This trade union college scheme, for general workpiece manufacture, is all quite effective.
But for the workpiece that some is large-scale, when whole workpiece is placed on work top, and when work top size is smaller, if still adopt this traditional clamping method, at this moment whole pressing plate has is outer be exposed at outside work top greatly, and there will be cannot the awkward situation of clamping workpiece.Change planes in a lot of situation bed or transfer workpiece just become necessary selection.If there is no suitable lathe, even there will be the extreme case that workpiece cannot be processed.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of pressure plate clamping mechanism, can expand workpiece to be processed in workbench X size range upwards, ensure that smooth clamping simultaneously.
The present invention is by the following technical solutions:
A kind of pressure plate clamping mechanism, comprise pressing plate and the force application rod through pressing plate, one end of pressing plate is supported on cushion block, the other end is used for workpiece pressing, described cushion block comprises support portion and to step down portion, and the end face of described support portion contacts with pressing plate, described in the portion of stepping down be provided with resigning hole, pass for described force application rod, between the end face in the portion that steps down and pressing plate, be provided with gap.Described cushion block at least comprises two " end faces ", wherein support portion end face contacts with pressing plate, but does not contact with force application rod.Therefore, formed in " region of stepping down " by the gap of stepping down between portion's end face and pressing plate, guarantee the arm of force stressed on cushion block.
Further, described force application rod is located between cushion block and workpiece to be clamped.
Preferably, the cross section of described resigning hole is U-shaped.
Further, described cushion block support portion bottom surface with step down portion bottom surface at grade.Whole cushion block bears the reaction force of fulcrum side, and stress equalization is guaranteed.
Further, also other pad can be set up between the end face of described cushion block support portion and pressing plate.
Further, described force application rod is for execute stressed sub-assembly to pressing plate, and this pressure is produced by screw threads for fastening, hydraulic pressure or pneumatic pinch mode.
Preferably, described force application rod comprises bolt, and described bolt lower end coordinates with the T-slot on the workbench residing for pressure plate clamping mechanism, and bolt upper end is connected with nut, with clam member.
Further, form first, second contact surface respectively bottom described pressing plate in force application rod both sides, the apical side height of support portion is higher than the second contact surface.
The cushion block that the present invention relates to has lever and supports double effect, is " composite block ".Be instead of the common cushion block of traditional screw thread rotation type by composite block, by reduction cushion block bulk, reach the object expanding common clamping usage range.And the ingenious conversion by power, by the fulcrum dynamic balance suffered by cushion block in the bottom of whole cushion block.Meanwhile, can ensure that the fulcrum amount of overcoming is near workpiece, to ensure the reasonable balance of lever.Theory calculate and common clamping ratio, stressing conditions is identical.The present invention has that structure is simple, compact, the feature of stable and reliable operation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of clamping workpiece in prior art.
Fig. 2 is lever principle figure.
Fig. 3 is the structural representation of the pressure plate clamping mechanism that the present invention relates to.
Fig. 4 is the structural representation of cushion block in the pressure plate clamping mechanism that the present invention relates to.
Fig. 5 ~ Fig. 8 is four kinds of embodiments of cushion block in the pressure plate clamping mechanism that the present invention relates to.
Detailed description of the invention
See Fig. 3, it is the pressure plate clamping mechanism that the present invention relates to.The present invention is applicable to the clamping workpiece (as Bulk plastic mould) on horizontal machine tool.This pressure plate clamping mechanism comprises pressing plate 2 and the force application rod 3 through pressing plate 2, and one end of pressing plate 2 is supported on cushion block 1, and the other end is used for workpiece pressing.Described cushion block 1 comprises support portion and to step down portion, and the end face 11 of described support portion contacts with pressing plate 2, described in the portion of stepping down be provided with resigning hole 15, the described force application rod 3 of confession passes, and is provided with gap between the end face 12 in the portion that steps down and pressing plate 2.
First, second contact surface 21,22 is formed respectively in force application rod 3 both sides bottom described pressing plate 2.Described cushion block 1 top comprises at least two planes: the end face 11 of support portion, the end face 12 in the portion that steps down, and see Fig. 4, the end face 11 of described support portion contacts with pressing plate 2, and does not contact with force application rod 3.Stepping down between the end face 12 in portion and pressing plate 2 and have gap, the end face 12 in the portion that namely steps down is " region 16 of stepping down ".This region ensure that the end face 12 in the portion that steps down of cushion block 1 does not directly contact with pressing plate 2.Therefore, this region does not stress in theory.Comprise bottom surface, support portion 13 and bottom surface, portion 14 of stepping down bottom described cushion block 1, the bottom surface 13 of support portion and the bottom surface 14 in the portion that steps down are at grade.
The described portion of stepping down is provided with around force application rod 3 and the resigning hole 15 coordinated with force application rod 3.As seen from the figure, this resigning hole 15 can be circular hole, sees Fig. 5, can be also U-shaped hole, see Fig. 6.No matter which kind of embodiment, cushion block 1 can surround force application rod 3.When resigning hole 15 adopts form as shown in Figure 6, be equivalent to open a unidirectional breach in cushion block 1 side, force application rod 3 can put in from this barbed portion.And resigning hole 15 hole wall can with the contacts side surfaces of force application rod 3, see Fig. 8, also can not contact, see Fig. 7.Due to the existence in " region 16 of stepping down ", when resigning hole 15 hole wall and force application rod 3 contacts side surfaces, between the end face 11 of support portion, the end face 12 in the portion that steps down, transition face 17 must be had, not contact with force application rod 3 to make the end face 11 of support portion.
Described force application rod 3 is for execute stressed sub-assembly to pressing plate 2, and this pressure can be produced by various mode, the modes such as such as screw threads for fastening, hydraulic pressure or pneumatic pinch, and namely force application rod 3 can be bolt and nut clamp system, hydraulic cylinder or cylinder clamping mechanism etc.In the present embodiment, preferred bolt nut clamp system.See Fig. 3, force application rod 3 comprises bolt 31, and described bolt 31 lower end coordinates with the T-slot 61 on the workbench 6 residing for pressure plate clamping mechanism, and bolt 31 upper end is connected with nut 32, with clam member 2.Also support pad 33 can be established between nut 32 and pressing plate 2.
The present invention is based on lever principle to develop, though cushion block is single part, both born the active force of force application rod side, and had again the effect of support, and can be described as " composite block ".This cushion block has three functions: 1) serve as stress point effect, holding capacity F1, in order to balance on workpiece to be clamped to power F2, see Fig. 2, F1XS1=F2XS2, F3=F1+F2; 2) cushion block is subject to the reaction force of power F1, evenly be split on whole cushion block, power F1 is delivered on bottom cushion block by the end face of support portion, to utilize above cushion block " allow dummy section ", make the stress surface (i.e. bottom surface, support portion+bottom surface, portion of stepping down) shared equally below cushion block that bolt can be leaned on nearer, even encased by whole bolt, the stress equalization of whole cushion block is not damaged.3) for the theoretical stress point of confining force F1 is away from bolt, is stepped down out in the region of cushion block by bolt, arm of force S1 can be increased like this, make F1 and F2 still remain on the both direction of fulcrum.Adopt the present invention, the distance between force application rod and workpiece to be clamped can be shortened, expand the size range of the upwards workpiece of X on lathe simultaneously.When distance when between force application rod and workpiece to be clamped reduces, the distance between cushion block and force application rod also reduces simultaneously.Although the arm of force reduce, can increase cushion block end face divide the power F1 be subject to, the integral type block structure of cushion block can guarantee that this power is balanced in cushion block bottom surface.Therefore " region of stepping down " in vertical direction need not size very large, have small―gap suture, the certain height of cushion block can increase balance and the stability of whole clamp system.
From illustrating above, the part of the present invention to original-pack clamp mechanism is changed, and other parts can change, and comprise the bolt and pressing plate that serve as fixed pivot effect.Simple and practical especially, and cushion block is easily processed, and can reduce manufacturing cost.During clamping, need ensure that end face 11 height of support portion is higher than the second contact surface 22.Other pad 7 can be set up again, with flexible modulation pressing plate 2 height between the end face 11 of the support portion of cushion block 1 and pressing plate 2.For the embodiment shown in Fig. 6 and Fig. 8, composition graphs 3, workpiece to be clamped 4 is placed on fixed block 5, and there is a fluting workpiece to be clamped 4 side, bolt 31 is embedded in T-slot 61, cushion block 1 is surrounded bolt 31, and pressing plate 2 contacts with the end face 11 of support portion through bolt 31, first contact surface 21, second contact surface 22 is slotted with workpiece 4 and is contacted, add support pad 33 and nut 32, nut 32 is tightened, and is fixed by workpiece 4.
After practical application is got off, clamping intensity and common clamping are compared and are not affected, simple.For increasing clamping stability, the fixed block that can specially lower between workpiece to be clamped and workbench.Utilize pressing plate to make intermediary's lever, bolt supports, and pressing plate one is fixed on workpiece, and other one is fixed on compound parallels.The height of pressing plate can be adjusted later, ensured the flexible controllability of clamping height by minipad or gasket ring.
Claims (8)
1. a pressure plate clamping mechanism, comprise pressing plate (2) and the force application rod (3) through pressing plate (2), one end of pressing plate (2) is supported on cushion block (1), the other end is used for workpiece pressing, it is characterized in that: described cushion block (1) comprises support portion and the portion that steps down, the end face (11) of described support portion contacts with pressing plate (2), the described portion of stepping down is provided with resigning hole (15), pass for described force application rod (3), step down between the end face (12) in portion and pressing plate (2) and be provided with gap, the end face (12) in the portion that steps down directly does not contact with pressing plate (2).
2. pressure plate clamping mechanism according to claim 1, is characterized in that: described force application rod (3) is located between cushion block (1) and workpiece to be clamped.
3. pressure plate clamping mechanism according to claim 1, is characterized in that: the cross section of described resigning hole (15) is U-shaped.
4. pressure plate clamping mechanism according to claim 1, is characterized in that: the bottom surface (13) of described cushion block (1) support portion and the bottom surface (14) in the portion that steps down are at grade.
5. pressure plate clamping mechanism according to claim 1, is characterized in that: also set up other pad (7) between the end face (11) of described cushion block (1) support portion and pressing plate (2).
6. pressure plate clamping mechanism according to claim 1, is characterized in that: described force application rod (3) is for execute stressed sub-assembly to pressing plate (2), and this pressure is produced by screw threads for fastening, hydraulic clamp or pneumatic pinch mode.
7. pressure plate clamping mechanism according to claim 6, it is characterized in that: described force application rod (3) comprises bolt (31), described bolt (31) lower end coordinates with the T-slot (61) on the workbench residing for pressure plate clamping mechanism, bolt (31) upper end is connected with nut (32), with clam member (2).
8. pressure plate clamping mechanism according to claim 1, is characterized in that: described pressing plate (2) bottom forms first, second contact surface (21,22) respectively in force application rod (3) both sides, and end face (11) height of support portion is higher than the second contact surface (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110111794.5A CN102756293B (en) | 2011-04-29 | 2011-04-29 | Pressure plate clamping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110111794.5A CN102756293B (en) | 2011-04-29 | 2011-04-29 | Pressure plate clamping mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102756293A CN102756293A (en) | 2012-10-31 |
| CN102756293B true CN102756293B (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110111794.5A Active CN102756293B (en) | 2011-04-29 | 2011-04-29 | Pressure plate clamping mechanism |
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| CN (1) | CN102756293B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108421864A (en) * | 2014-09-24 | 2018-08-21 | 宁波甬辉智能科技有限公司 | A kind of diel |
| CN106312630A (en) * | 2016-10-18 | 2017-01-11 | 无锡蕾菲赛尔机械科技有限公司 | Fastening tool used for casting base mold |
| CN113021042B (en) * | 2021-03-26 | 2022-05-03 | 中航飞机起落架有限责任公司 | Lever balance tensioning clamp and using method thereof |
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| CN202062236U (en) * | 2011-04-29 | 2011-12-07 | 上海小糸车灯有限公司 | Pressing plate clamping mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095060U (en) * | 1991-05-18 | 1992-02-05 | 张澄 | Adjustable universal work clamp |
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| KR20100043738A (en) * | 2008-10-21 | 2010-04-29 | 주식회사 에이치.엠.티 | Index chuck for processing piston head of compressor |
| CN101434040A (en) * | 2008-12-15 | 2009-05-20 | 镁联科技（芜湖）有限公司 | Pneumatic lever type clamping structure |
| CN101992398A (en) * | 2009-08-10 | 2011-03-30 | 上海后盾塑胶模具有限公司 | Workpiece fixture for multi-functional machine tool |
| CN201604015U (en) * | 2009-12-11 | 2010-10-13 | 毛丹红 | Frock clamp device |
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| CN102756293A (en) | 2012-10-31 |
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Address after: 201800 Yecheng Road, Jiading District, Jiading District, Shanghai Patentee after: Hua Yu vision technology (Shanghai) Co., Ltd. Address before: 201800 Yecheng Road, Jiading District, Jiading District, Shanghai Patentee before: Xiaoxi Car Lights Co., Ltd., Shanghai |
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| TR01 | Transfer of patent right |
Effective date of registration: 20210823 Address after: 410323 No. 18, Yongkang Road, Liuyang high tech Industrial Development Zone, Changsha City, Hunan Province Patentee after: Huayu vision technology (Changsha) Co.,Ltd. Address before: 201800 No. 767, Yecheng Road, Shanghai, Jiading District Patentee before: HUAYU VISION TECHNOLOGY (SHANGHAI) Co.,Ltd. |