CN1110382C - Thin sheet forming dies - Google Patents
Thin sheet forming dies Download PDFInfo
- Publication number
- CN1110382C CN1110382C CN97104925A CN97104925A CN1110382C CN 1110382 C CN1110382 C CN 1110382C CN 97104925 A CN97104925 A CN 97104925A CN 97104925 A CN97104925 A CN 97104925A CN 1110382 C CN1110382 C CN 1110382C
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- mould
- rotary module
- negative angle
- shaping
- workpiece
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Abstract
The present invention relates to a shaping mould with a shaping position. When a second mould is connected with a first mould for shaping a thin plate, a negative angle is formed. During the shaping process of the thin plate, a cylindrical rotary mould block with a groove arranged in the axial direction can be arranged in the first mould in a rotary mode, a negative angle shaping position is formed at the edge of the groove of the rotary mould, and a sliding mould with a negative angle shaping position is arranged on the second mould in a mode corresponding to the rotary mould. An automatic resetting device arranged on the first mould is used for rotating and contracting the rotary mould to ensure that a workpiece can be dismounted from the first mould after being shaped.
Description
Technical field
The present invention relates to thin sheet forming dies.
Background technology
Usually owing to using sliding block to produce the negative angle of thin plate such as metallic plate or plastic plate.
At present, said here negative angle is shaped and is meant: the workpiece on being contained in counterdie is vertically descended so that the patrix that engages is when shaping, and is finished to be shaped by shaping and processes, and move towards counterdie to the inboard from the operating point that it is positioned at patrix at this position.
In the negative angle forming process of traditional light sheet products, workpiece is installed on the counterdie, and patrix vertically descends, make the slave module on the active module drive counterdie on the patrix, workpiece is by from side direction processing, when machine, when patrix lifts, slave module is rebounded by spring.
In this process, shaping on the slave module slides and makes component shaping from the workpiece outside, its overall profile is identical with the shaped portion of workpiece, but adding the counterdie shaping that carries workpiece must be designed to: can separate and shrink that part of of formation counterdie negative angle, perhaps leave out that part of rear portion that forms negative angle, workpiece is to moving forward so that workpiece can be removed.When the negative angle angle hour, there is not any serious problems, but when big or workpiece has the very thin frame shape cross section of a trough of belt when the angle of negative angle, part as the surface of the front column in the automobile metal plate work one class, because the narrow groove width of workpiece, when being separated as the part of negative angle on the counterdie or leaving out, not only on the shaped portion of passive module, can't form gabarit clearly, and the intensity of counterdie is also not enough, can't carry out negative angle and be shaped.
Using sliding block to form in the process of negative angle, passive module is to finish shaping will slip over quite long air line distance, and the passive module that repeats to slide can easily accurately not be positioned an ad-hoc location, and like this, product quality just is difficult to stablize.In addition, this situation is often arranged: product produces distortion or crooked, thereby must obtain trimming, but the trimming of some product may not in practical operation, such as the part that constitutes automobile panel, such as: body side, wing, top cover, hood, luggage-boot lid, door-plate or front column surface, because this class part all has three-dimension curved surface and gabarit.In the plates of automobile parts, produce any distortion or bending as fruit product, just be difficult to these parts and other parts are fitted together, high-quality plates of automobile structure also just can not be provided, can not guarantee the specific products precision of sheet moulding article.
When using sliding block, must a very big module and module base be installed on one side of counterdie, the workpiece top loading of counterdie, this area requirements to counterdie is very big, has increased the weight of mould equally, causes the mould costliness.
Therefore, for addressing the above problem, the applicant has proposed a sheet moulding method and finishing die in Japanese patent laid-open No. sho 63-41662, and it changes the rectilinear motion up and down of punching press into and rotatablely moves.
Now, elaborate with reference to Fig. 4-8 pair finishing die.
Fig. 4 is the left and right sides perspective diagram of a complete front column outer surface, and it is the automobile metal plate work that is produced by finishing die.Among the figure, figure below is showed the right side on front column surface, and last figure shows its left side.This front column surface has constituted the part of preceding doorframe, the part of front windshield frame and the part of top cover support frame, and constitute joint portions with many other parts, therefore this part has strict product required precision, if permissible accuracy does not reach, just can not provide high-quality panel beating vehicle body.
Because the front column surface has constituted the part of automobile panel, so have three-dimensional curved surface and profile.
With F represent in the drawings that by the negative angle part that this finishing die is shaped its cross section is expressed as workpiece W in Fig. 8.
That is to say that after forming negative angle, workpiece W reaches state among Fig. 8 by state among Fig. 5.By the way, this mold pressing manufacturing procedure comprises: at first be calendering, reach state among Fig. 5 through peripheral shaping then, the 3rd step of following is a die forming.
About counterdie 100, have a cylindric rotary module 102 of one axially grooved 101, be installed on the lower mold body 103 in rotary mode.Lower mold body 103 usefulness bolts 122 are fixed on the bottom base 121 firmly.The shape of the upper surface of lower mold body 103 is made to can hold workpiece W, and negative angle shaping 104 is formed on the edge of fluting 101 of rotary module 102, and is very approaching with the upper surface of counterdie 103.The automatic reset device that is embedded into 103 li of lower mold body rotates and contraction rotary module 102, so that workpiece W can take off from lower mold body 103 after shaping.In this embodiment, automatic reset device 105 is under the elastic force effect of helical spring 106, push rod 107 is contacted with the end face of rolling plate 108, and this rolling plate is fixed on bolt 151 on the fluting 101 of rotary module 102 on that face relative with negative angle shaping 104 firmly.For automatic reset device 105, can use as pneumatic shuttle, hydraulic means, linkage, module or other similar means etc., this device not only can be installed on the counterdie 100, also can be installed between patrix 109 and the counterdie 100.
On the other hand, on patrix 109, sliding block 110 is installed on the position relative with above-mentioned rotary module 102, a negative angle shaping 112 is arranged in the bottom of this sliding block 110, sliding block 110 is by guider (not annotating among the figure) guiding, the helical spring 117 that is being compressed heads on towards the mould outside, and this spring is being compressed between the bottom surface of the guider 154 that is installed in sliding block 110 end faces and inclination, and guider is fixed on the top base 152 firmly with bolt 153.Sliding block 110 is blocked by the baffle plate 156 that is fixed on firmly on the oblique guider 154 with bolt 155.Cushion pad 157 is headed on downwards by helical spring 158, is suspended on the top base 152 by Hanging bolt 119, workpiece W effectively is pressed onto on the lower mold body 103, in order to avoid workpiece W moved before its negative angle is shaped.
The working condition of this finishing die will be described below.
At first, as shown in Figure 5, patrix 109 is positioned at the stroke top dead centre, and then, workpiece W is placed on the lower mold body 103 of counterdie 100, and in this process, rotary module 102 rotates under the effect of automatic reset device 105 and shrinks.
Then, patrix 109 begins to descend, and as shown in Figure 6, the bottom surface of sliding block 110 contacted with rolling plate 108 before this, rotary module 102 is rotated in Fig. 6 along clockwise direction, but do not cause negative angle shaping 104 mutual interference mutually on sliding block 110 and the rotary module 102.
Along with patrix 109 further descends continuously, supported the elastic force of helical spring 117 by the sliding block 110 that heads on towards the mould lateral direction, under the module effect, laterally move to the left, reach state shown in Figure 7, negative angle shaping 104 on the rotary module 102 that has rotated cooperatively interacts with the negative angle shaping 112 on the sliding block 110, forms the negative angle on the workpiece W.
After forming negative angle, patrix 109 begins to lift, and sliding block 110 is headed on towards the mould lateral direction by helical spring 117, moves to the right and rising in Fig. 8, does not disturb mutually with the workpiece W that forms negative angle.
On the other hand, because affined sliding block 110 rises, rotary module 102 turns right in Fig. 8 under the automatic reset device effect, thereby make when unloading the workpiece W that forms negative angle from counterdie 103, the negative angle shaping 104 that unloads with rotary module 102 that moves of workpiece W does not disturb mutually.
The sheet member that has been shaped utilizes above-mentioned rotary module to form its negative angle, but because rotary module is that the wraparound shaft axis rotates processing work, if workpiece does not have big bending near straight line, the part of negative angle to be formed can enter in one of cylindrical rotary module with same diameter and be processed, but, if workpiece has very macrobending, the part of then treating to form negative angle just can not enter in one of rotary module with same diameter fully, also just can not be processed.
Particularly, automobile metal plate work comprises that door-plate all has many sweeps, and in recent years, from design angle, many negative angle shaped portions outside traditional sweep, have been increased, and require in a procedure, to finish the shaping of these negative angle shaped portions, rather than through many procedures, to boost productivity.
Summary of the invention
A kind of thin sheet forming dies that has the negative angle shaping of the present invention, when moving along straight line, second mould finishes sheet moulding when engaging with first mould, it is characterized in that: comprising: one has axially grooved cylindrical rotary module and is installed in first mould with rotating form, negative angle shaping is formed on the edge of fluting of rotary module, a sliding block that has the negative angle shaping is installed on second mould with the form relative with above-mentioned rotary module, be installed in an automatic reset device on first mould, be used to make rotary module to rotate and contraction, to guarantee that workpiece can unload from first mould after shaping, one of them crooked negative angle shaped portion utilizes a rotary module processing, and this rotary module has the different cylindrical rotary module section of some diameters.
Therefore, under this environment, the present invention relates to a kind of thin sheet forming dies, rotary module of its utilization is finished the shaping of crooked negative angle shaped portion, and this cam has the cylindrical rotary module section of some different-diameters.
From the angle of mfg. moulding die, in fact the diameter of rotary module can not too strengthen, for example greatly about 320mm.For very crooked workpiece, sweep is processed with a rotary module that comprises the rotary module section of a plurality of different-diameters.
Along rotary shaft, this diameter changes in the requirement of diverse location according to the degree of crook of workpiece.Diameter to rotary module must be with special consideration, so that the negative angle shaped portion of rotary module can not become undue sharp-pointed.Because if the negative angle shaping is too sharp-pointed, intensity is just poor, so should be noted that and do not allow it reach 30 ° or littler.
If use a series of rotary modules, when rotary module rotated, the rotary module that adjoins was located its end face phase mutual interference on the composition surface, but mould of the present invention has been avoided this interference fully, because use is a rotary module in the present invention.
Description of drawings
Fig. 1 is the vertical view of a specific embodiment of the present invention;
Fig. 2 is that the III-III position intercepts from Fig. 1 workpiece is before negative angle is shaped and two sectional views after the shaping;
Fig. 3 is the longitudinal section that III-III gets the position from Fig. 1;
Fig. 4 is the left and right schematic perspective view on a complete front column surface, and this is an automobile metal plate work;
Fig. 5 is a longitudinal section, expression be: the state the when patrix that is used to finish the finishing die that the negative angle on front column surface shown in Figure 4 is shaped is in top dead centre;
Fig. 6 is a longitudinal section of the patrix of finishing die shown in Figure 5, and its descends and engages with counterdie;
Fig. 7 is a longitudinal section, expression be state when the patrix of finishing die is in lower dead center among Fig. 5;
Fig. 8 is the longitudinal section of patrix, expression be after finishing die shown in Figure 5 is finished negative angle and is shaped, patrix rises and the state when being positioned at its top dead centre.
The specific embodiment
Now, with reference to a specific embodiment shown in Fig. 1-3, with the present invention will be described in more detail.
As shown in Figure 1, the workpiece W that is shaped by finishing die of the present invention is a car trunk cap surface, from plane, the recessed circular curve of the leading edge on luggage-boot lid surface has partly formed negative angle, as shown in Figure 2, the negative angle shaping is to make its cross section as shown above become state as shown below.
What Fig. 1 showed is the vertical view of thin sheet forming dies, Fig. 2 be flange 1 before workpiece W is shaped and the state after the shaping, Fig. 3 is the longitudinal section that the III-III position intercepts from Fig. 1.
The processing part of workpiece W on the thin sheet forming dies is the back edge on luggage-boot lid surface, very clear among Fig. 1, see it is the profile of one section protrusion from the plane, and its two ends there is very big reach, if only process, will need a sizable rotary module with a rotary module.But from the angle of assembly jig, in fact can not excessively amplify, maximum gauge is about about 320mm.In addition, the angle of the flange at middle part and two ends is also inequality, but also has this situation: the negative angle shaped portion of rotary module becomes too sharp-pointed, to such an extent as to can't keep its intensity.In the present invention, rotary module is processed to: the minor diameter middle part rotary module section and the major diameter both ends rotary module section that is positioned at two ends that are positioned at the middle part.
Among Fig. 1,, the rotary module with major diameter limit portion rotary module section 3 has been installed at the two ends that with CA are the minor diameter middle part rotary module section 2 of rotating shaft.Can be clear that by Fig. 3: major diameter limit portion rotary module section 3 is concentric with the central rotary module section 2 of minor diameter, and its diameter is greater than the diameter of minor diameter middle part rotary module section 2.For example, the diameter of major diameter limit portion rotary module section is 290mm, and the diameter of minor diameter middle part rotary module section is 250mm.
Counterdie 5 has a bearing 8, is fixed on the counterdie platform 6 with bolt 7, on bearing 8 in the horizontal elongated slot 9 at middle part, is supporting in the mode that allows its rotation and to have axially grooved 10 cylindrical major diameter limit portion rotary module 3.
In the present embodiment, as Fig. 1, be provided with the automatic reset device of a cylinder 11 as rotary module 4, needless to say, automatic reset device is not limited to use cylinder, resemble spring, hydraulic means, linkage, module or any mechanism similarly and all can use, and not only can be installed on the counterdie, also can be installed on the patrix.
Attaching parts 12 are fixed on the bottom surface of minor diameter middle part rotary module 2 and the end of cylinder piston rod 15, the pedestal of cylinder props up installation by carriage 14 pivots, carriage 14 is fixed on the bearing 8 with screw 13, above-mentioned attaching parts 12 pivots prop up installation, so that shrink piston rod 15, thereby minor diameter middle part swiveling wheel 2 is resetted.On the bottom of the elongated slot 9 of bearing 8, have a window shape slit, so that attaching parts 12 are rotated therein.
Formed a negative angle shaping 16 on the edge of the fluting 10 of limit portion rotary module section 3, rolling plate 17 is fixed on the face relative with 10 the negative angle shaping 16 of slotting with bolt 18.The negative angle shaping 16 of major diameter limit portion rotary module section 3 is processed to workpiece support part 19, its outline is consistent with the bottom profile of workpiece W, to hold workpiece W, has workpiece loading part 20 with the bottom surface same profile of workpiece W, its top is protruding slightly, with the workpiece support part 19 of the limit portion rotary module 3 of bearing 8 in succession.
Patrix 21 has a bearing 23, is fixed on bolt 24 on the bottom surface of patrix platform 22, and wear strip 25 usefulness bolts 26 are fixed on the skewed surface of bearing 23, and sliding block 27 is kept by guide plate (not marking among the figure), slides in the bottom surface of wear strip 25.Negative angle shaping 28 usefulness bolts 29 are fixed on the upper surface of sliding block 27, are positioned on the relative position of the fluting 10 of sliding block 27 and limit portion rotary module 3.
At the inclined upper surface of sliding block 27, gripper shoe 29 is fixing with bolt 30.In gripper shoe 29 and be fixed between the gripper shoe 31 on the bearing 23, a helical spring that is compressing 32 has been installed, spring is pressed to the mould outside with sliding block 27.
Above-mentioned helical spring 32 is enclosed within the outside of the alignment pin 33 that is screwed into 31 li of supporting disks, and the end of above-mentioned alignment pin 33 allows above a thrust plate 34 that is fixed on the side relative with gripper shoe 31 is through.
When patrix 21 rose, sliding block 27 side shifting outside mould was under the elastic force effect of gripper shoe 29 at helical spring 32, till thrust plate 34 contacts.
Although do not mark among the figure, in order firmly to prop up workpiece W, the locating element of workpiece W is installed on counterdie 5 and the patrix 21, as described in the conventional case, is used for the backing plate of workpiece W pressurization is installed in counterdie 5.But because these will make illustration become complicated, make emphasis indigestion of the present invention, so omitted locating element and backing plate.
At the middle part of workpiece W, minor diameter middle part rotary module section 2 marks with an alternate chain-dotted line of unexpected misfortune in the drawings, and remaining and major diameter rotary module are much at one.
The course of work of thin sheet forming dies will be described below.
State shown in Figure 3 is the lower dead center state, and is corresponding with the Fig. 7 in the conventional case.
In the present invention, although illustration useless explanation, as Fig. 5 was represented, patrix 21 was in top dead center position, when workpiece W is installed on the workpiece support part 20 of counterdie 5.In this process, middle part rotary module 4 rotates under the effect of cylinder 11 and shrinks.
Below, shown in Figure 6 as conventional case, in patrix 21, the inclined-plane 41 of sliding block 27 and rolling plate 17 contact not causing to enter under sliding block 27 and minor diameter middle part rotary module 2 and the situations that the negative angle shaping 16 of major diameter limit portion rotary module section 3 is interfered mutually, order about minor diameter middle part rotary module 2 and major diameter limit portion rotary module section 3 inhours and rotate (in the direction of rotation in the conventional case and the present embodiment opposite).
Along with patrix 21 further descends, the sliding block 27 that quilt heads on towards the mould lateral direction is supporting the elastic force of helical spring 32, laterally moves to the right under the module effect, reaches the state shown in Figure 7 of conventional case, state promptly shown in Figure 3.Minor diameter middle part rotary module section 2 of having rotated and the negative angle shaping 16 on the major diameter limit portion rotary module section 3 and the negative angle shaping 28 on the sliding block 27 cooperatively interact, and negative angle forms workpiece W.
After forming negative angle, patrix 21 begins to lift, sliding block 27 by helical spring 32 towards mould laterally direction head on to the left and move, shown in Figure 8 as conventional case do not disturbed mutually with the workpiece W that has formed negative angle in the rising.
On the other hand, when affined sliding block 27 lifts, cylinder 11 will shrink piston rod 15, minor diameter middle part rotary module section 2 and major diameter limit portion rotary module section 3 turn left, make that when unloading the workpiece W that forms negative angle the negative angle shaping 16 that unloads with minor diameter middle part rotary module section 2 and major diameter edge section rotary module section 3 that moves of workpiece W does not disturb mutually from counterdie 5.
What the present invention relates to is: a finishing die that has shaping when second mould moves when engaging with first mould along straight line, forms negative angle.In thin sheet forming dies, one has axially grooved cylindrical rotary module and is installed in first mould with rotating form, negative angle shaping is formed on the edge of fluting of rotary module, a sliding block that has the negative angle shaping is installed on second mould with the form relative with above-mentioned rotary module, be installed in an automatic reset device on first mould, being used to make rotary module to rotate shrinks, to guarantee that workpiece can unload from first mould after shaping, because being designed to be able to thin sheet forming dies utilize a rotary module to process extremely crooked negative angle shaped portion-this rotary module is assembled into by the different cylindrical rotary module section of some diameters, thereby make and utilize an extremely crooked negative angle shaped portion of finishing die processing to become possibility, also make and reduce the operation number, improve machining accuracy and become possibility.
Particularly, to be suitable for finishing from plane be that the negative angle of the circular curve part outwards protruded is shaped to thin sheet forming dies of the present invention.This be because: flange to be processed can produce gauffer, thereby become cissing owing to outwards protrude when processed, therefore need bottom pushing operation, in the present invention, because these rotary modules are processed to one, possibility is processed in the pushing of therefore high-precision bottom.
Because an extremely crooked negative angle becomes tee section to be processed to a plurality of diameter parts in the present invention, so, can consider to avoid the negative angle shaping on the rotary module excessively sharp-pointed, avoid the rotary module undercapacity.
In addition, if use some rotary modules, when rotary module rotated, the rotary module that adjoins was mutually located its end face phase mutual interference on the composition surface, but the mould among the present invention has been avoided this interference fully, because only used a rotary module among the present invention.
Claims (1)
1. thin sheet forming dies that has the negative angle shaping, when moving along straight line, second mould finishes sheet moulding when engaging with first mould, it is characterized in that: comprising: one has axially grooved cylindrical rotary module and is installed in first mould with rotating form, negative angle shaping is formed on the edge of fluting of rotary module, a sliding block that has the negative angle shaping is installed on second mould with the form relative with above-mentioned rotary module, be installed in an automatic reset device on first mould, be used to make rotary module to rotate and contraction, to guarantee that workpiece can unload from first mould after shaping, one of them crooked negative angle shaped portion utilizes a rotary module processing, and this rotary module has the different cylindrical rotary module section of some diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97104925A CN1110382C (en) | 1997-03-26 | 1997-03-26 | Thin sheet forming dies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97104925A CN1110382C (en) | 1997-03-26 | 1997-03-26 | Thin sheet forming dies |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1194185A CN1194185A (en) | 1998-09-30 |
| CN1110382C true CN1110382C (en) | 2003-06-04 |
Family
ID=5167556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97104925A Expired - Fee Related CN1110382C (en) | 1997-03-26 | 1997-03-26 | Thin sheet forming dies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1110382C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101534973B (en) * | 2006-09-04 | 2011-06-22 | 芬宝私人有限公司 | A kinematic system for clamping semifinished products by means of pressing for sheet metal shaping panelling machines |
| CN110918787A (en) * | 2019-11-28 | 2020-03-27 | 徐州泓吉环锻科技有限公司 | Wind power generation tower door frame forming and flange correcting device |
| CN115069888A (en) * | 2022-05-16 | 2022-09-20 | 上汽通用五菱汽车股份有限公司 | Composite die |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59197318A (en) * | 1983-04-21 | 1984-11-08 | Daihatsu Motor Co Ltd | Die for press |
| US5347838A (en) * | 1993-06-25 | 1994-09-20 | Umix Co., Ltd. | Forming die for thin plate |
-
1997
- 1997-03-26 CN CN97104925A patent/CN1110382C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59197318A (en) * | 1983-04-21 | 1984-11-08 | Daihatsu Motor Co Ltd | Die for press |
| US5347838A (en) * | 1993-06-25 | 1994-09-20 | Umix Co., Ltd. | Forming die for thin plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1194185A (en) | 1998-09-30 |
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Granted publication date: 20030604 |