CN210098598U - Indentation-free bending lower die with adjustable opening - Google Patents
Indentation-free bending lower die with adjustable opening Download PDFInfo
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- CN210098598U CN210098598U CN201920707095.9U CN201920707095U CN210098598U CN 210098598 U CN210098598 U CN 210098598U CN 201920707095 U CN201920707095 U CN 201920707095U CN 210098598 U CN210098598 U CN 210098598U
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- workbench
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Abstract
An opening-adjustable indentation-free bending lower die belongs to the technical field of metal plate bending, and comprises a cuboid workbench and two V-shaped modules with trapezoidal cross sections, wherein the V-shaped modules are fixed on the workbench through limiting mechanisms for limiting the upper direction, the lower direction and the front and back direction; the inner side of the upper surface of the V-shaped module is provided with a semicircular ball groove, the outer side of the ball groove is provided with a pressure plate groove, cylindrical balls and a pressure plate are respectively arranged in the ball groove and the pressure plate groove, the contact surface of the pressure plate and the balls is a cambered surface matched with the balls, and the workbench is fixedly provided with an adjusting mechanism for limiting the left and right directions of the V-shaped module. For bending of workpieces of different models, the distance between the two V-shaped modules is only required to be adjusted, the universality is strong, the manufacturing and using cost is reduced, the production efficiency is improved, the relative friction between the workpiece and the die is rolling friction, and the workpiece to be bent has no indentation.
Description
Technical Field
The utility model belongs to the technical field of the metal sheet bends, specifically speaking is a lower mould is bent to no indentation of opening adjustable.
Background
In the production and forming of metal plates, a bending process is indispensable, and generally, the metal plates are pressed by an upper die and a lower die through a bending machine to realize bending of the metal plates at required angles. The structure of the bending machine is generally shown in fig. 1, and the bending machine needs to select a lower die before bending a workpiece, and generally has two types of lower dies: v type lower mould and U type lower mould. The U-shaped lower die is generally used on a large-tonnage bending machine, such as 1000T, 2000T and the like. The V-shaped lower die is widely used, and bending machines of dozens of tons to 800T basically adopt the V-shaped lower die. The traditional V-shaped lower die for bending is a structural form of a part 3 in fig. 1, a fixed integrated die is adopted, a bending opening is fixed, and therefore before a metal plate workpiece is machined, the size of the opening of the lower die needs to be considered according to various factors such as the material, the plate thickness, the R arc (the size and the width of a corresponding cutter), the distance from a bending line to an edge, whether bending deformation exists and the like of the metal plate, and then the lower dies with different models are selected. Thus, a plurality of lower molds with V-shaped grooves with different opening sizes need to be prepared, the types and the cost of the molds are greatly increased, and the maintenance and the management of the molds are not facilitated. In addition, when the metal plate is bent, the integrated V-shaped lower die generates sliding friction with the metal plate, and the friction force is large, so that the surface of the workpiece is easily damaged (pressed) in the pressing process.
SUMMERY OF THE UTILITY MODEL
For solving the bending bed die formula structure as an organic whole of now, need to change different model moulds to bending different model metal sheets, greatly increased use cost and reduction in production efficiency are unfavorable for the maintenance and the management of mould, and push down the in-process and easily cause the darker problem of workpiece surface indentation, the utility model provides an opening adjustable does not have indentation bending bed die.
The utility model discloses a realize through following technical scheme.
An indentation-free bending lower die with an adjustable opening is characterized by comprising a cuboid workbench and two V-shaped modules with trapezoidal cross sections, wherein the V-shaped modules are fixed on the workbench through limiting mechanisms for limiting the upper direction, the lower direction and the front and back direction; the inner side of the upper surface of the V-shaped module is provided with a semicircular ball groove, the outer side of the ball groove is provided with a pressure plate groove, cylindrical balls and a pressure plate are respectively arranged in the ball groove and the pressure plate groove, the contact surface of the pressure plate and the balls is a cambered surface matched with the balls, and the workbench is fixedly provided with an adjusting mechanism for limiting the left and right directions of the V-shaped module.
The utility model discloses a further improvement still, foretell stop gear by the workstation open some at least two pairs left right direction's slide, two V type modules on open some with slide assorted counter sink and with counter sink assorted fastening bolt constitute, fastening bolt run through counter sink and slide to fasten through the nut. The vertical and the front-back directions of the V-shaped module can be limited, and the V-shaped module is more stable and firm in working.
The utility model discloses a further improvement still, foretell adjustment mechanism is including fixing two pairs of screw seats in the workstation left and right sides, and screw seat upper portion spiral has the inside adjusting bolt of level, and the adjusting bolt tip is pressed on V type module lateral surface through the push pedal, and the push pedal medial surface agrees with mutually with V type module lateral surface. The flexible adjustment of the size of the opening in the left and right directions of the V-shaped module is realized, the V-shaped module is prevented from being unfolded outwards, and the accuracy and the stability of operation are ensured.
The utility model discloses a further improvement still, foretell V type module's cross section is right trapezoid.
The utility model discloses a further improvement still, the slot has been opened in the foretell clamp plate groove lower part outside, be equipped with on the clamp plate with slot assorted socket, clamp plate upper surface and V type module upper surface, ball top parallel and level. And the lower surface of the workpiece is ensured to have no indentation when the workpiece initially turns.
The utility model is further improved in that the outer surface of the ball is covered with a chromium coating. The hardness of the ball is enhanced, and the wear of the ball is reduced.
The utility model is further improved in that the cross section of the slide way is in a step shape with a narrow top and a wide bottom, and the outer side of the slide way is communicated with a round hole; the nut is a square nut, the side length of the nut is matched with the width of the lower part of the slide way, and the diameter of the round hole is larger than the diagonal length of the nut. Make things convenient for fastening bolt's installation and screw fixedly, easy operation is convenient.
The utility model discloses a further improvement still, foretell screw seat passes through bolt fastening or the draw-in groove is fixed on the workstation.
The utility model discloses a further improvement still, the link gear is installed to the side around foretell two V type modules. And synchronous adjustment of the two V-shaped modules is realized.
The utility model has the advantages that: 1. the flexible adjustment of the space between the V-shaped modules at two sides can be realized, the bending forming of workpieces of different types can be completed by fewer dies, and the universality is strong; 2. the cost for manufacturing a large number of integrated molds can be greatly saved, and the manufacturing and using cost is reduced; 3. for bending of workpieces of different types, only the distance between the two V-shaped modules needs to be adjusted, so that the time for replacing the die can be saved, the production efficiency is improved, and the maintenance and management of the die are facilitated; 4. the arrangement of the balls changes the relative friction between the workpiece and the die from sliding friction to rolling friction, so that the workpiece has no indentation, and the appearance and the production quality are both greatly improved; 5. simple structure, stable and convenient use.
Drawings
Fig. 1 is a schematic diagram of a bending machine.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention.
Fig. 3 is a schematic diagram of an explosion structure according to an embodiment of the present invention.
Fig. 4 is a schematic bottom view of a workbench according to an embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of a slide according to an embodiment of the present invention.
In the drawings: 1. the device comprises a sliding block, 2, an upper die, 3, a lower die, 4, a workbench, 5, a rear stock stop, 6, a transmission mechanism, 7, a coupler, 8, a frame, 9, a servo motor, 10, a workpiece, 11, a counter sink, 12, a nut, 13, a ball, 14, a pressing plate, 15, a V-shaped module, 16, a screw seat, 17, an adjusting screw, 18, a pushing plate, 19, a fastening screw, 20, a slide way, 21, a round hole, 22, a ball groove, 23 and a pressing plate groove.
Detailed Description
The following describes the embodiments of the present invention with reference to the accompanying drawings.
As shown in the attached drawings, the indentation-free bending lower die with the adjustable opening comprises a rectangular workbench 4, two V-shaped modules 15 with right trapezoid cross sections and four fastening bolts 19, wherein the workbench 4 is provided with four left and right slide ways 20, the cross sections of the slide ways 20 are in a step shape with a narrow top and a wide bottom, each V-shaped module 15 is provided with two countersunk holes 11 matched with the slide ways 20, the four fastening bolts 19 respectively penetrate through the four countersunk holes 11 and the four slide ways 20 and are fastened through four square nuts 12, the side length of each square nut 12 is adapted to the width of the lower part of each slide way 20, the square nuts 12 are clamped at the lower parts of the corresponding slide ways 20, the outer sides of the slide ways 20 are communicated with round holes 21, and the diameter of the round holes 21 is larger than the diagonal length of the square nuts 12; a semicircular ball groove 22 is formed in the inner side of the upper surface of the V-shaped module 15, a pressure plate groove 23 is formed in the outer side of the ball groove 22, a pressure plate 14 and a cylindrical ball 13 with a chromium-plated layer coated on the outer surface are respectively installed in the pressure plate groove 23 and the ball groove 22, the contact surface of the pressure plate 14 and the ball 13 is a cambered surface matched with the ball 13, a slot is formed in the outer side of the lower portion of the pressure plate groove 23, a socket matched with the slot is formed in the pressure plate 14, the upper surface of the pressure plate 14 is flush with the upper surface of the V-shaped module 15 and the top of the ball 13, two screw seats 16 are respectively fixed on the left side and the right side of the workbench 4 (fixed through bolts or clamping grooves), an adjusting bolt 17 which is horizontally inward is screwed on the upper portion of each screw seat 16, the end portion of the adjusting bolt 17 abuts against the outer.
When the indentation-free bending lower die with the adjustable opening is used, a workbench is installed on the whole machine frame 8, balls 13 on two sides are placed in a ball groove 22, a pressing plate 14 is inserted to press the balls tightly, a fastening bolt 19 penetrates through a counter bore 11 on a V-shaped module 15, a square nut 12 is screwed on a bolt rod of the fastening bolt 19 exposed at the lower part, then the fastening bolt 19 with the square nut 12 is inserted downwards through a round hole 21 and moves inwards integrally, the square nut 12 is clamped in a wider pore passage at the lower part of a slideway 20, the distance between the two V-shaped modules 15 is adjusted simultaneously through linkage mechanisms on two sides, the technological requirements of bending workpieces are met, the fastening bolt 19 is screwed from the upper part, the top of the fastening bolt 19 is not higher than the upper surface of the V-shaped module 15 (the fastening bolt 19 is prevented from generating indentations on the workpieces), the fixed clamping in the up and down direction is realized, and the fastening bolt 19, the limit in the front and back direction can be realized; two screw seats 16 are respectively fixed (fixed through bolts or clamping grooves) on the left side and the right side of the workbench 4, the upper parts of the screw seats 16 are screwed with horizontally inward adjusting bolts 17, push plates 18 tightly attached to the outer side surfaces of the V-shaped modules 15 are placed at the end parts of the adjusting bolts 17, and the adjusting bolts 17 are screwed tightly to realize outward limiting.
When the opening sizes of the two V-shaped modules 15 need to be adjusted, the fastening bolts 19 and the adjusting bolts 17 are loosened, the V-shaped modules 15 are moved left and right (synchronous adjustment is realized through a linkage mechanism), and then the bolts are screwed.
During production, the workpiece 10 is placed on the two V-shaped modules 15, the upper die 2 is driven to press the workpiece 10 downwards, the lower surface of the workpiece 10 presses the ball 13 while the workpiece 10 is bent, and the ball 13 rotates to enable the ball 13 to be in rolling friction with the lower surface of the workpiece 10, so that no indentation is formed on the lower surface of the workpiece.
This opening adjustable does not have indentation bending bed die, simple structure, it is stable, convenient to use, can realize the nimble adjustment of the interval of both sides V type module, and the commonality is strong, reduces and makes and use cost, improves production efficiency, and the work piece of just bending does not have the indentation, and finished product outward appearance and production quality all promote by a wide margin.
Claims (9)
1. An indentation-free bending lower die with an adjustable opening is characterized by comprising a cuboid-shaped workbench (4) and two V-shaped modules (15) with trapezoidal cross sections, wherein the V-shaped modules (15) are fixed on the workbench (4) through limiting mechanisms for limiting the vertical direction and the front-back direction; a semicircular ball groove (22) is formed in the inner side of the upper surface of the V-shaped module (15), a pressure plate groove (23) is formed in the outer side of the ball groove (22), cylindrical balls (13) and a pressure plate (14) are respectively installed in the ball groove (22) and the pressure plate groove (23), the contact surface of the pressure plate (14) and the balls (13) is an arc surface matched with the balls (13), and an adjusting mechanism for limiting the left and right directions of the V-shaped module (15) is fixed on the workbench (4).
2. The indentation-free bending lower die with the adjustable opening according to claim 1, wherein the limiting mechanism comprises at least two pairs of left and right slide ways (20) arranged on the workbench (4), counterbores (11) arranged on the two V-shaped modules (15) and matched with the slide ways (20), and fastening bolts (19) matched with the counterbores (11), wherein the fastening bolts (19) penetrate through the counterbores (11) and the slide ways (20) and are fastened through nuts (12).
3. The indentation-free bending lower die with the adjustable opening as claimed in claim 1, wherein the adjusting mechanism comprises two pairs of screw bases (16) fixed on the left side and the right side of the workbench (4), adjusting bolts (17) horizontally and inwards screwed on the upper parts of the screw bases (16), the end parts of the adjusting bolts (17) are pressed on the outer side surface of the V-shaped module (15) through a push plate (18), and the inner side surface of the push plate (18) is matched with the outer side surface of the V-shaped module (15).
4. The indentation-free bottom mold with adjustable opening of claim 1, wherein the V-shaped mold block (15) has a right trapezoid cross section.
5. The indentation-free bending lower die with the adjustable opening as claimed in claim 1, wherein the lower outer side of the pressing plate groove (23) is provided with a slot, the pressing plate (14) is provided with a socket matched with the slot, and the upper surface of the pressing plate (14) is flush with the upper surface of the V-shaped module (15) and the top of the ball (13).
6. The indentation-free bending lower die with adjustable opening according to claim 1, wherein the outer surface of the ball (13) is coated with a chromium coating.
7. The indentation-free bending lower die with the adjustable opening as claimed in claim 2, wherein the cross section of the slide way (20) is in a step shape with a narrow top and a wide bottom, and the outer side of the slide way (20) is communicated with a round hole (21); the nut (12) is a square nut, the side length of the nut (12) is adapted to the width of the lower part of the slideway (20), and the diameter of the round hole (21) is larger than the diagonal length of the nut (12).
8. The indentation-free bending lower die with the adjustable opening as claimed in claim 3, wherein the screw base (16) is fixed on the workbench (4) through a bolt or a clamping groove.
9. The indentation-free bending lower die with adjustable opening according to claim 1, wherein the two V-shaped modules (15) are provided with a linkage mechanism at the front and the rear sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920707095.9U CN210098598U (en) | 2019-05-16 | 2019-05-16 | Indentation-free bending lower die with adjustable opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920707095.9U CN210098598U (en) | 2019-05-16 | 2019-05-16 | Indentation-free bending lower die with adjustable opening |
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| Publication Number | Publication Date |
|---|---|
| CN210098598U true CN210098598U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920707095.9U Active CN210098598U (en) | 2019-05-16 | 2019-05-16 | Indentation-free bending lower die with adjustable opening |
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| CN (1) | CN210098598U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684756A (en) * | 2020-12-25 | 2021-04-20 | 吴江万工机电设备有限公司 | Adjustable mold control system and control method thereof |
| CN112916663A (en) * | 2020-12-26 | 2021-06-08 | 巢湖市华鑫输送设备有限公司 | Plate bending equipment for flexible hopper production |
| CN113145698A (en) * | 2021-05-26 | 2021-07-23 | 江苏奔宇车身制造有限公司 | Metal plate traceless bending adjustable die |
-
2019
- 2019-05-16 CN CN201920707095.9U patent/CN210098598U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684756A (en) * | 2020-12-25 | 2021-04-20 | 吴江万工机电设备有限公司 | Adjustable mold control system and control method thereof |
| CN112916663A (en) * | 2020-12-26 | 2021-06-08 | 巢湖市华鑫输送设备有限公司 | Plate bending equipment for flexible hopper production |
| CN113145698A (en) * | 2021-05-26 | 2021-07-23 | 江苏奔宇车身制造有限公司 | Metal plate traceless bending adjustable die |
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