CN102773654A - Vehicle body clamp - Google Patents
Vehicle body clamp Download PDFInfo
- Publication number
- CN102773654A CN102773654A CN2012102990045A CN201210299004A CN102773654A CN 102773654 A CN102773654 A CN 102773654A CN 2012102990045 A CN2012102990045 A CN 2012102990045A CN 201210299004 A CN201210299004 A CN 201210299004A CN 102773654 A CN102773654 A CN 102773654A
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- vehicle body
- rocking arm
- pressure head
- hole
- anchor clamps
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Abstract
The invention provides a vehicle body clamp, which belongs to the technical field of work piece clamping and positioning devices. The vehicle body clamp comprises a base; the upper surface of the base is connected with a transition plate; an air cylinder is arranged on the left side of the transition plate; the upper end of the air cylinder is connected with a rocking arm through a pin shaft; the left end of the upper surface of the transition plate is connected with the rocking arm through a hinge; a notch is formed at the right part of the upper surface of the transition plate; a positioning block is connected in the notch; the right end of the rocking arm is connected with a floating pressure head mechanism; the floating pressure head mechanism is positioned above the right part of the positioning block; the floating pressure head mechanism comprises an inverted-T-shaped pressure head; threads are formed at the upper part of the pressure head; and the pressure head upwards penetrates through a spring and the rocking arm in sequence and then is connected with a nut. The vehicle body clamp can be applicable to the clamping and positioning of work pieces with different material thicknesses, not only meets the requirements of welding spaces of welding tongs, but also can improve the welding quality, saves the production cost of the work pieces, and reduces the manufacture time of the work pieces, so that the production efficiency of the clamp is effectively improved.
Description
Technical field
The present invention relates to a kind of clamping positioner of workpiece, particularly relate to a kind of vehicle body anchor clamps that are used for clamping work pieces.
Background technology
In the jig Design process of automobile, simply to locate compressing structure and be widely used in the jig Design unit, the stability when being used for strengthening the product welding is to satisfy the product requirement of welding.Usually the distribution principle of locating piece, compact heap is that they will be used for strengthening the welding quality of product assembly as much as possible near solder joint, notes influencing soldering turret welding plate simultaneously.
Existing vehicle body anchor clamps comprise base, connect rebound above the base, and the left side of rebound is provided with cylinder; The piston rod upper end on cylinder top connects the left end of rocking arm through bearing pin; The upper surface left end of rebound is connected with rocking arm through hinge, and the upper surface right-hand part of rebound is provided with breach, connects locating piece in this breach; the right-hand member of rocking arm is connected with clamp, is positioned at the top of locating piece.During use, the piston rod of cylinder is shunk downwards, workpiece is positioned on the locating piece, the piston rod of the cylinder jack-up that makes progress contacts with workpiece surface until clamp, and workpiece is clamped between rocking arm and the locating piece then.
But the location compressing structure of this anchor clamps in use; If same station same position is repeatedly put part or the thick overgauge workpiece of workpiece material material when thick; Under the equal condition of the pressure of cylinder; Only use this location hold-down mechanism that workpiece is positioned and compress, workpiece is damaged by pressure; Locate and compress identical or close position if a plurality of location compact heap is set, can make anchor clamps prolong process time, the anchor clamps welding space diminishes, and the production cost of work piece holder improves.
Summary of the invention
The purpose of this invention is to provide a kind of clamping and positioning that can be suitable for the thick workpiece of different material, save the production cost of workpiece, reduce the workpiece manufacturing time, effectively promote the vehicle body anchor clamps of production efficiency.
Vehicle body anchor clamps of the present invention comprise base, connect rebound above the said base; Said rebound left side is provided with cylinder, and the piston rod upper end on said cylinder top is through the left end of bearing pin connection rocking arm, and the upper surface left end of said rebound is connected with rocking arm through hinge; The upper surface right-hand part of said rebound is provided with breach; Connect locating piece in the said breach, the right-hand member of said rocking arm is connected with unsteady pressure heads mechanism, and said unsteady pressure heads mechanism is positioned at the top of locating piece; Said unsteady pressure heads mechanism comprises pressure head; Said pressure head is inverted T shape bar, and the right-hand member of said rocking arm is provided with first through hole that vertical direction extends, and said pressure head is spirally connected with nut after upwards passing the spring and first through hole successively.
Vehicle body anchor clamps of the present invention, wherein, the right-hand member of said rocking arm is provided with the second horizontal through hole, and said second through hole passes first through hole, and the locking pin of horizontally set passes said rocking arm and the inner said pressure head of said rocking arm through second through hole.
Vehicle body anchor clamps of the present invention, wherein, the cross section of said second through hole vertically to length greater than the level of the cross section of said second through hole to length.
Vehicle body anchor clamps of the present invention, wherein, said second through hole is a slotted hole.
Vehicle body anchor clamps of the present invention, wherein, the upper surface of said rebound connects bootstrap block, and said bootstrap block is positioned at the right-hand of said hinge, and the upper surface of said bootstrap block is provided with groove, and said rocking arm is positioned at said groove.
Vehicle body anchor clamps of the present invention, wherein, said locating piece comprises the horizontal block that places breach bottom and is positioned at vertical block said horizontal block right-hand member and that be connected with said horizontal block, said pressure head be positioned at said vertical block directly over.
Vehicle body anchor clamps of the present invention, wherein, the left side of said rebound and said cylinder link together through bearing pin.
Vehicle body anchor clamps of the present invention are through being provided with unsteady pressure heads mechanism at the rocking arm right-hand member, make this unsteady pressure heads mechanism be positioned at the right part top of locating piece, and cylinder acts on spring for the active force of rocking arm; the rocking arm right-hand member can be realized the adjustment up and down of pressure head through the float amount of spring compression of pressure heads mechanism of adjustment, thus on can repeated multiple times on the same station workpiece; can difference be expected thick workpiece clamping and positioning respectively, reach the stability requirement of product, and make the welding procedure of workpiece be easy to realize; improve welding quality; reduced the workpiece manufacturing time, reduced the production cost of workpiece, and improved the production efficiency of anchor clamps.
Description of drawings
Fig. 1 is the three-dimensional installation diagram of vehicle body anchor clamps of the present invention;
Fig. 2 is the structural representation of the unsteady pressure heads mechanism of vehicle body anchor clamps of the present invention at top dead-centre;
Fig. 3 is the structural representation of the unsteady pressure heads mechanism of vehicle body anchor clamps of the present invention at bottom dead centre;
Fig. 4 is the vertical view of the unsteady pressure heads mechanism of vehicle body anchor clamps of the present invention;
Fig. 5 is that the A-A of Fig. 6 is to cross-sectional schematic;
Fig. 6 is that the B-B of Fig. 6 is to cross-sectional schematic;
Fig. 7 is the suffered torque analysis figure of rocking arm of vehicle body anchor clamps of the present invention.
The specific embodiment
Like Fig. 1, Fig. 4, Fig. 5, shown in Figure 6, vehicle body anchor clamps of the present invention comprise base 1; Connect rebound 2 above the base 1; Rebound 2 left sides are provided with cylinder 3, and the piston rod upper end on cylinder 3 tops connects the Rocker arm 4 left end through bearing pin, and the upper surface left end of rebound 2 is connected with Rocker arm 4 through hinge 5; The upper surface right-hand part of rebound 2 is provided with breach 6, connects locating piece 7 in the breach 6.The right-hand member of Rocker arm 4 is connected with the pressure heads mechanism 8 that floats; The pressure heads mechanism 8 that floats is positioned at the top of locating piece 7; The pressure heads mechanism 8 that floats comprises pressure head 10, and pressure head 10 is inverted T shape bar, and the right-hand member of Rocker arm 4 is provided with first through hole 20 that vertical direction extends; Spring 11 and first through hole, 20 backs that pressure head 10 upwards passes pressurized successively are spirally connected with nut 12, realize fixing with Rocker arm 4 with this.Pressure head 10 cooperates with locating piece 7, is used to press down the workpiece on the locating piece 7.
When vehicle body anchor clamps of the present invention in when work, workpiece is positioned on the locating piece 7, the piston rod of cylinder 3 jack-up that makes progress then, the right-hand member of Rocker arm 4 sinks, and drives pressure head 10 and presses down workpiece.When the thick overgauge workpiece of workpiece material material was thick, spring 11 shrank, and pressure head 10 lower ends are to the distance shrinkage of the lower surface of Rocker arm 4 right-hand member, like this when pressure head 10 when pressing down workpiece, pressure can not become greatly, workpiece can not damaged by pressure.
Vehicle body anchor clamps of the present invention make this unsteady pressure heads mechanism be positioned at the right part top of locating piece through at the rocking arm right-hand member unsteady pressure heads mechanism being set, and the rocking arm right-hand member is through the amount of spring compression of the unsteady pressure heads mechanism of adjustment; Can realize the adjustment up and down of pressure head, thus on can repeated multiple times on the same station workpiece, can difference be expected thick workpiece clamping and positioning respectively; Reach the stability requirement of product; And the welding procedure that makes workpiece is easy to realize, has improved welding quality, has reduced the workpiece manufacturing time; Reduce the production cost of workpiece, and promoted the production efficiency of anchor clamps.
Vehicle body anchor clamps of the present invention, wherein, the right-hand member of Rocker arm 4 is provided with horizontal second through hole, 13, the second through holes 13 and passes first through hole 20.The locking pin 14 of horizontally set passes Rocker arm 4 and the inner pressure head 10 of Rocker arm 4 through second through hole 13.
Vehicle body anchor clamps of the present invention, wherein, the cross section of second through hole 13 vertically to length greater than the level of the cross section of second through hole 13 to length.The cross section of second through hole 13 is the cross sections with the axis normal of second through hole 13.
Vehicle body anchor clamps of the present invention, wherein, second through hole 13 is a slotted hole.The major axis of the cross section of second through hole 13 be positioned at vertically to, minor axis be positioned at level to.
Locking pin 14 can move up and down in second through hole 13.The inner chamber upper end of second through hole 13 is the top dead-centre of Rocker arm 4; The inner chamber lower end of second through hole 13 is the bottom dead centre of Rocker arm 4.
Said structure plays a protective role to spring 11, and shorten service life because compression is excessive to prevent spring 11.
Vehicle body anchor clamps of the present invention, wherein, the upper surface of rebound 2 connects bootstrap block 15, and bootstrap block 15 is positioned at the right-hand of hinge 5, and the upper surface of bootstrap block 15 is provided with groove 16, and Rocker arm 4 is positioned at groove 16.
Vehicle body anchor clamps of the present invention, wherein, locating piece 7 comprises vertical block 72 horizontal block 71 that places breach 6 bottoms and the right-hand member that is positioned at horizontal block 71 and that be connected with horizontal block 71, pressure head 10 be positioned at vertical block 72 directly over.
Vehicle body anchor clamps of the present invention, wherein, the left side of rebound 2 and cylinder 3 link together through bearing pin 21.
Fig. 2 once goes up part locations of structures figure for vehicle body anchor clamps of the present invention, and the locking pin 14 among the figure on the unsteady pressure heads mechanism 8 is at the lower dead point position of Rocker arm 4, spring 11 no decrements, and the nut 12 on pressure head 10 tops is in tight condition.This moment, the stressed of spring 11 was F
Pressure=F
Support force
And Fig. 3 is the locations of structures figure of part on the secondary of vehicle body anchor clamps of the present invention; Locking pin 14 among the figure on the unsteady pressure heads mechanism 8 is at the upper dead center position of Rocker arm 4; Wherein top dead-centre to the distance of bottom dead centre between thick 1～2 times of the workpiece material of part on the secondary; Be ST=(1～2) * t, wherein ST is the distance of rocking arm top dead-centre to bottom dead centre; T is that the workpiece material of part on the secondary is thick.T gets 2mm in the present embodiment, and according to above-mentioned formula, the rocking arm top dead-centre is 2～4mm to the distance of bottom dead centre.Design is in order to leave enough buffer distances for Rocker arm 4 and spring 11 like this.Pressure head 10 moves up apart from being the thick size 2mm of material of workpiece.This moment, the force analysis of spring 11 was: F
Pressure=F
Support force, because spring 11 is compressed, producing spring force, can draw by active force and reaction force: F
Pressure=F
Support force=F
Spring force, F
Spring force=k * (X1-X2)=k * Δ X=k * t, k is a spring constant, and Δ X is an amount of spring compression, and cylinder 3 is selected φ 50 clamping cylinders for use in the present embodiment.
In conjunction with shown in Figure 7, the ratio minimum of a value of the pin joint of hinge 5 and Rocker arm 4 to the distance L 1 of cylinder 3 and this pin joint to the distance L 2 of pressure head 10 is 1:4, and maximum is 1:1; The distance of L1 is 50mm; The value range of L2 is 200～50mm, looks into the cylinder table and can know, the power that φ 50 clamping cylinders are provided is 88N; Suffered power is as shown in Figure 7, F
Cylinder* L1=F
Pressure* L2 obtains F
Pressure=88～22N, then F
Spring=k * t=88～22N, k=88～22/t, k is a spring constant, looks into the spring parameter table, can draw the model of spring, wherein, spring 11 is placed on the stem of pressure head 10, and by the capitulum of pressure head 10 and Rocker arm 4 compression.The diameter of spring 11 can not surpass the radial dimension of the capitulum of pressure head 10.Owing to move on pressure head 10 positions, drive on the locking pin 14 and move.Make locking pin 14 displacement that makes progress arranged with respect to Rocker arm 4.
Vehicle body anchor clamps of the present invention compress on the basis of principle in satisfied location, and are thick according to the Different products material; Unsteady pressure head can be adjusted height automatically, has both satisfied the welding space requirement of soldering turret, saves the anchor clamps production cost again; Reduce manufacturing time, effectively promoted the production efficiency of anchor clamps.
Vehicle body folder of the present invention has the following advantages: save the space, leave enough welding space, improve welding quality; Optimize clamp structure effectively; Simple in structure, be easy to realize.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (7)
1. vehicle body anchor clamps; Comprise base (1), connect rebound (2) above the said base (1), said rebound (2) left side is provided with cylinder (3); The piston rod upper end on said cylinder (3) top connects the left end of rocking arm (4) through bearing pin; The upper surface left end of said rebound (2) is connected with rocking arm (4) through hinge (5), and the upper surface right-hand part of said rebound (2) is provided with breach (6), connects locating piece (7) in the said breach (6); It is characterized in that: the right-hand member of said rocking arm (4) is connected with unsteady pressure heads mechanism (8); Said unsteady pressure heads mechanism (8) is positioned at the top of locating piece (7), and said unsteady pressure heads mechanism (8) comprises pressure head (10), and said pressure head (10) is inverted T shape bar; The right-hand member of said rocking arm (4) is provided with first through hole (20) that vertical direction extends, and said pressure head (10) upwards passes spring (11) and first through hole (20) back successively and is spirally connected with nut (12).
2. vehicle body anchor clamps according to claim 1; It is characterized in that: the right-hand member of said rocking arm (4) is provided with horizontal second through hole (13); Said second through hole (13) passes first through hole (20), and the locking pin of horizontally set (14) passes said rocking arm (4) and the inner said pressure head (10) of said rocking arm (4) through second through hole (13).
3. vehicle body anchor clamps according to claim 2 is characterized in that: the cross section of said second through hole (13) vertically to length greater than the level of the cross section of said second through hole (13) to length.
4. vehicle body anchor clamps according to claim 3 is characterized in that: said second through hole (13) is a slotted hole.
5. according to each described vehicle body anchor clamps of claim 1-4; It is characterized in that: the upper surface of said rebound (2) connects bootstrap block (15); Said bootstrap block (15) is positioned at the right-hand of said hinge (5); The upper surface of said bootstrap block (15) is provided with groove (16), and said rocking arm (4) is positioned at said groove (16).
6. vehicle body anchor clamps according to claim 5; It is characterized in that: said locating piece (7) comprises the horizontal block that places breach (6) bottom and is positioned at vertical block said horizontal block right-hand member and that be connected with said horizontal block, said pressure head (10) be positioned at said vertical block directly over.
7. vehicle body anchor clamps according to claim 6 is characterized in that: the left side of said rebound (2) and said cylinder (3) link together through bearing pin (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299004.5A CN102773654B (en) | 2012-08-21 | 2012-08-21 | Vehicle body clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299004.5A CN102773654B (en) | 2012-08-21 | 2012-08-21 | Vehicle body clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102773654A true CN102773654A (en) | 2012-11-14 |
| CN102773654B CN102773654B (en) | 2015-06-10 |
Family
ID=47118878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210299004.5A Active CN102773654B (en) | 2012-08-21 | 2012-08-21 | Vehicle body clamp |
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| CN (1) | CN102773654B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102861979A (en) * | 2012-09-29 | 2013-01-09 | 长城汽车股份有限公司 | Automatic spot welding device for automotive engine compartment repair welding |
| CN103420113A (en) * | 2013-08-23 | 2013-12-04 | 芜湖奕辰模具科技有限公司 | Supporting structure assembly of car body coating lifting tool |
| CN103433673A (en) * | 2013-08-23 | 2013-12-11 | 芜湖奕辰模具科技有限公司 | Multi-touch lower vehicle body repair welding tool |
| CN103464945A (en) * | 2013-08-23 | 2013-12-25 | 芜湖奕辰模具科技有限公司 | Novel lower-bodywork repair welding, positioning and locking device |
| CN103862218A (en) * | 2012-12-18 | 2014-06-18 | 北汽福田汽车股份有限公司 | Clamping device |
| CN104117940A (en) * | 2013-04-23 | 2014-10-29 | 上海道多汽车设备有限公司 | Double-face clamping device for locating and clamping automobile parts |
| CN104759657A (en) * | 2015-04-30 | 2015-07-08 | 鹏驰五金制品有限公司 | Rotary drilling machine |
| CN105773048A (en) * | 2016-05-20 | 2016-07-20 | 安徽江淮汽车股份有限公司 | Pressing head mechanism of welding fixture |
| CN106736140A (en) * | 2016-11-30 | 2017-05-31 | 芜湖普威技研有限公司 | A kind of weld jig clamping device |
| CN107498238A (en) * | 2017-09-06 | 2017-12-22 | 芜湖常瑞汽车部件有限公司 | A kind of jig governor motion |
| CN108747168A (en) * | 2018-08-09 | 2018-11-06 | 中车成都机车车辆有限公司 | A kind of welding fixture mechanism |
| CN108746786A (en) * | 2018-06-19 | 2018-11-06 | 山东雷帕得汽车技术股份有限公司 | A kind of leaf spring numerical control mill edge equipment and special fixture |
| CN110340819A (en) * | 2019-08-06 | 2019-10-18 | 苏州普莱特环保新材料有限公司 | A kind of hand clamp |
| CN110732820A (en) * | 2018-07-20 | 2020-01-31 | 中车唐山机车车辆有限公司 | Welding clamping tool |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102861979B (en) * | 2012-09-29 | 2014-11-12 | 长城汽车股份有限公司 | Automatic spot welding device for automotive engine compartment repair welding |
| CN102861979A (en) * | 2012-09-29 | 2013-01-09 | 长城汽车股份有限公司 | Automatic spot welding device for automotive engine compartment repair welding |
| CN103862218B (en) * | 2012-12-18 | 2015-12-09 | 北汽福田汽车股份有限公司 | A kind of clamping device |
| CN103862218A (en) * | 2012-12-18 | 2014-06-18 | 北汽福田汽车股份有限公司 | Clamping device |
| CN104117940A (en) * | 2013-04-23 | 2014-10-29 | 上海道多汽车设备有限公司 | Double-face clamping device for locating and clamping automobile parts |
| CN103464945A (en) * | 2013-08-23 | 2013-12-25 | 芜湖奕辰模具科技有限公司 | Novel lower-bodywork repair welding, positioning and locking device |
| CN103433673A (en) * | 2013-08-23 | 2013-12-11 | 芜湖奕辰模具科技有限公司 | Multi-touch lower vehicle body repair welding tool |
| CN103420113A (en) * | 2013-08-23 | 2013-12-04 | 芜湖奕辰模具科技有限公司 | Supporting structure assembly of car body coating lifting tool |
| CN104759657A (en) * | 2015-04-30 | 2015-07-08 | 鹏驰五金制品有限公司 | Rotary drilling machine |
| CN105773048A (en) * | 2016-05-20 | 2016-07-20 | 安徽江淮汽车股份有限公司 | Pressing head mechanism of welding fixture |
| CN106736140A (en) * | 2016-11-30 | 2017-05-31 | 芜湖普威技研有限公司 | A kind of weld jig clamping device |
| CN107498238A (en) * | 2017-09-06 | 2017-12-22 | 芜湖常瑞汽车部件有限公司 | A kind of jig governor motion |
| CN108746786A (en) * | 2018-06-19 | 2018-11-06 | 山东雷帕得汽车技术股份有限公司 | A kind of leaf spring numerical control mill edge equipment and special fixture |
| CN110732820A (en) * | 2018-07-20 | 2020-01-31 | 中车唐山机车车辆有限公司 | Welding clamping tool |
| CN110732820B (en) * | 2018-07-20 | 2021-09-03 | 中车唐山机车车辆有限公司 | Welding clamping tool |
| CN108747168A (en) * | 2018-08-09 | 2018-11-06 | 中车成都机车车辆有限公司 | A kind of welding fixture mechanism |
| CN110340819A (en) * | 2019-08-06 | 2019-10-18 | 苏州普莱特环保新材料有限公司 | A kind of hand clamp |
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|---|---|
| CN102773654B (en) | 2015-06-10 |
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