WO2012053004A1 - A press brake apparatus with multiple chambers and a method for manufacturing metal plates with desired bends and shapes - Google Patents
A press brake apparatus with multiple chambers and a method for manufacturing metal plates with desired bends and shapes Download PDFInfo
- Publication number
- WO2012053004A1 WO2012053004A1 PCT/IN2011/000712 IN2011000712W WO2012053004A1 WO 2012053004 A1 WO2012053004 A1 WO 2012053004A1 IN 2011000712 W IN2011000712 W IN 2011000712W WO 2012053004 A1 WO2012053004 A1 WO 2012053004A1
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- WO
- WIPO (PCT)
- Prior art keywords
- work piece
- ram
- brake apparatus
- press brake
- die
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
Abstract
A press brake apparatus (100) and a method for manufacturing work piece (201) with desired shapes is provided. The press brake apparatus (100) comprising one or more rams (103a, 103b, 103c) each accommodated in respective chamber (112a, 112b, 112c), the ram (103a, 103b, 103c) can be moved to and from in its respective chamber (112a, 112b, 112c). The press brake apparatus (100) comprises one or more punches (106a, 106b, 106c) each attached to its respective ram (103a, 103b, 103c). The press brake apparatus (100) comprises one or more dies (107a, 107b, 107c) each placed in association with its respective punch (106a, 106b, 106c) and chamber (112a, 112b, 112c), a work piece space (113) located between the punch (106a, 106b, 106c) and die (107a, 107b, 107c) to place the work piece (201), wherein each ram (103a, 103b, 103c) along with its punch (106a, 106b, 106c) can be moved to and from in its respective chamber (112a, 112b, 112c) independently from the other such that each ram (103a, 103b, 103c) along with its punch (106a, 106b, 106c) can exert pressure on the work piece (201) with respect to its associated die (107a, 107b, 107c) independently from the other.
Description
A press brake apparatus with multiple chambers and a method for manufacturing metal plates with desired bends and shapes
Field of invention
The present invention generally relates to an apparatus adapted for manufacturing metal articles particularly the present invention relates to a press brake apparatus with multiple ram and die chambers and a method for manufacturing work piece such as metal plates with desired shapes on the metal plates for varying dimension of the metal plates.
Background of invention
One of the existing arts relating to the press brake apparatus comprises a movable forming member and a fixed forming member and an appropriate tooling set with a punch and a die. The common problem with this type of apparatus used to bend sheet is the return or spring back of the material to a position somewhat less than the desired bend upon retraction of the punch member from the die. Generally, the terminal punch position is selected manually by an operator so that the stroke of the ram is reversed at a predetermined point to produce the desired angle of bend. Consequently, the selection of the reversal point by the operator is an artful choice to ensure that the metal sheet is overbent just enough to spring back to the desired angle. This procedure is usually based on trial an error coupled with the experience of the press brake operator.
The proper point for ram reversal for a particular bend angle depends upon the properties of the material being bent the geometry of the die and punch and the specific angle desired. This point is often found by making several trial bends to empirically determine the reversal point producing the best bend angle including compensation for spring back. However, it has been fond that once this point is determined, it will vary from bend to bend as the material varies in thickness and physical properties.
The press brakes so far available have upper ram which are moved by two hydraulic cylinders or servo motors. The heavy ram keeps moving up and down irrespective of the sheet metal job size.
This ram construction also requires that all the die and punch combinations should be of the same size. Different sized die blocks cannot be mounted on the die holder since the ram cannot reach the smaller die holders without damaging the bigger die holders.
The ram is pushed by the two cylinders on the left and right ends of the ram. The job exerts the force on the ram in the middle. So, the large ram deflects when the sheet metal job is bent. The load on the job is not uniform and varies along the length of the job. This leads to varying bend angles along the length of the press brake. To avoid this crowning employed. In crowning the die block is made slightly higher in the middle than at the two ends.
The machine should be loaded always in the middle to ensure symmetrical loads on the guides and motors.
One of the other existing arts relating to the press brake describe an electronic computer based control system associated with the press brake which senses the position of the ram and the force applied to the workpiece in order to calculate the precise point of ram reversal to accurately produce a desired bend angle in the workpiece with a single ram stroke. Since the control system is adaptive based on working parameters of the press brake encountered during the forming process trial and error procedures for establishing the required point of ram reversal during production work are eliminated thereby reducing machine set up time.
However, with the existing arts it has been found that the bend formed in the desired portion of the metal plates or metal stripes are not precise and as desired. Also, the bend formed is not according to the expected geometry. In some portion of the metal plates, the bend is more and in some portion of the metal plate the bend is less. This arises due to uneven pressure exerted by the ram on the die.
This uneven pressure exerted by the ram on the die is due to improper pressure distribution mechanism provided on the ram and due to its relatively large single surface area. These are the drawbacks present in the existing arts. Therefore there exists a need for a press brake apparatus with multiple ram and die chambers and a method for manufacturing metal plates with desired shapes on the metal plates for varying dimension of the metal plates.
Object of invention
One object of the present invention is to provide a press brake apparatus with multiple ram and die chambers to manufacture metal plates with desired shapes on the metal plates for varying dimension of the metal plates. Another object of the present invention is to provide a method for manufacturing metal plates with desired shapes on the metal plates for varying dimension of the metal plates.
Summary of the invention
A press brake apparatus for manufacturing work piece with desired shapes is provided. The press brake apparatus comprising one or more rams each accommodated in respective chambers, the ram can be moved to and fro in its respective chambers. The press brake apparatus comprises one or more punches each attached to its respective ram. The press brake apparatus comprises one or more dies each placed in association with its respective punch and chambers, a work piece space located between the punch and die to place the work piece, wherein each ram along with its punch can be moved to and fro in its respective chamber independently from the other such that each ram along with its punch can exert pressure on the work piece with respect to its associated die independently from the other. A method of manufacturing work piece with desired shapes is provided. The method comprising the steps of: placing one or more work piece on a work piece space which are respectively associated with one or more punches and dies of respective chambers, measuring the dimension of the work piece placed on the work piece space with aid of a sensing means, transferring the measured
dimension of the work piece to a main control unit, activating one or punches associated with the respective chamber based on the measured dimensions of the work piece and allowing the respective punch to exert desired pressure independently on the respective die through the work pieces such that the work piece attains desired bends and shapes independently and simultaneously.
Brief description of drawings
Fig. 1 illustrates a press brake apparatus with multiple ram and die chambers in accordance with an exemplary embodiment of the present invention;
Fig. 2 illustrates the press brake apparatus with multiple ram and die chambers when engaged with small metal sheet; Fig. 3 illustrates the press brake apparatus with multiple ram and die chambers when engaged with wide metal sheet;
Fig. 4 illustrates the press brake apparatus with multiple ram and die chambers when engaged with both small and thin metal sheet and small and thick metal sheet; and
Fig. 5 illustrates a flowchart depicting a method for manufacturing metal plates with desired bends and shapes on the metal plates in accordance with another exemplary embodiment of the present invention.
Detailed description of the invention
Referring to Fig. 1 , a press brake apparatus with multiple ram and die chambers is illustrated in accordance with an exemplary embodiment of the present invention.
A press brake apparatus for manufacturing work piece with desired shapes the press brake apparatus comprises one or more rams (103a, 103b, 103c) each accommodated in respective chamber (112a, 112b, 112c), the ram (103a, 103b, 103c) can be moved to and fro in its respective chamber (1 2a, 1 2b, 112c). The
press brake apparatus comprises one or more punches (106a, 106b, 106c) each attached to its respective ram (103a, 103b, 103c). The press brake apparatus comprises one or more dies (107a, 107b, 107c) each placed in association with its respective punch (106a, 106b, 106c) and chamber (1 12a, 1 12b, 1 12c); and a work piece space (1 13) located between the punch (106a, 106b, 106c) and die (107a, 107b, 107c) to place the work piece, wherein each ram (103a, 103b, 103c) along with its punch (106a, 106b, 106c) can be moved to and fro in its respective chamber (1 12a, 1 12b, 1 12c) independently from the other such that each ram (103a, 103b, 103c) along with its punch (106a, 106b, 106c) can exert pressure on the work piece with respect to its associated die (107a, 107b, 107c) independently from the other.
The press brake apparatus comprises guides (102a, 102b, 102c, 102d) in each of the chamber (1 12a, 1 12b, 1 12c) to enhance precise movement of the ram (103a, 103b, 103c) along with its punch (106a, 106b, 106c) in the respective chamber (1 12a, 1 12b, 1 12c). The press brake apparatus comprises side frames (101 a, 101 b) within which the press brake apparatus is housed.
In the press brake apparatus the dies (107a, 107b, 107c) are placed intact on a holder plate (108) which is attached to the side frames (101 a, 101 b) of the press brake apparatus.
The press brake apparatus comprises rotating means (104a, 104b, 104c) coupled to the respective ram (103a, 103b, 103c) through respective coupling means (105a, 105b, 105c).
In the press brake apparatus the coupling means (105a, 105b, 105c) enables the respective ram (103a, 103b, 103c) to move to and fro in the respective chamber (1 12a, 1 12b, 1 12c) with aid of threads present in the coupling means (105a, 105b, 105c) when the respective rotating means (104a, 104b, 104c) is activated.
The press brake apparatus comprises a sensing means (1 1 ) attached to the dies (107a, 107b, 107c) which can sense and measures the dimension of the t
work piece kept in the work piece space (113) and communicate it to a main control unit (109) which is electrically connected to the sensing means (111).
The press brake apparatus comprises a drive controller (110) which is electrically connected to the rotating means (104a, 104b, 104c) and to the main control unit (109) such that the main control unit (109) when required can electrically control the rotation of the rotating means (104a, 104b, 104c) thereby controlling the to and fro movement of the ram (103a, 103b, 103c) in the chamber (112a, 112b, 112c).
In the press brake apparatus the main control unit (109) can control the to and fro motion of the each ram (103a, 103b, 103c) independently by activating the respective rotating means (104a, 104b, 104c) based on the dimension of the work piece placed in the work piece space (1 3).
In the press brake apparatus first ram (103a), first die (107a), first punch (106a), first coupling means (105a), first rotating means (104a) are associated with first chamber (112a) and second ram (103b), second die (107b), second punch (106b), second coupling means (105b), second rotating means (104b) are associated with second chamber (112b) and third ram (103c), third die (107c), third punch (106c), third coupling means (105c), third rotating means (104c) are associated with third chamber (112c).
In the press brake apparatus the work piece can be placed on the work piece space (113) such that the work piece will be exposed to one or more of the associated chamber (112a, 112b, 112c) depending on the dimension of the work piece.
In the press brake apparatus work pieces varying in shapes and thickness can be placed on the work piece space (113) independently exposed to the associated chamber (112a, 112b, 112c) such that the work pieces can be processed independently and simultaneously. The rotating means (104a, 104b, 104c) is a drive motor.
The press brake apparatus (100) with multiple ram and die may be implemented with chamber (112a, 112b, 112c). The chamber (112a, 112b, 112c) are formed by providing guides (102a, 102b, 102c, 102d) which define the respective territory of said chamber (112a, 112b, 112c). Ram (103a, 103b, 103c) are incorporated in the associated chamber (112a, 112b, 112c) along with their respective guides (102a, 102b, 102c, 102d) and said ram (103a, 103b, 103c) are capable of being moved vertically as desired such that said ram (103a, 103b, 103c) can be moved precisely as desired with aid of their respective guides (102a, 102b, 102c, 102d). Punch (106a, 106b, 106c) are attached to the bottom portion of the respective ram (103a, 103b, 103c) such that these punch (106a, 106b, 106c) can be moved vertically along with the ram (103a, 103b, 103c) and these punch (106a, 106b, 106c) can be changed with a desired punch (106a, 106b, 106c) in the due coarse of operation of the press brake apparatus without any difficulty. The vertical outer sides of the first guide (102a) and the fourth guide (102d) are attached to the top inner side portion of the vertical side frames (101a, 10 b) respectively of the press brake apparatus and these side frames (101a, 101b) together forms the side portions of the press brake apparatus to house the press brake apparatus. A horizontal holder plate (108), the outer opposite vertical sides of which are attached to the bottom inner side portion of the vertical side frames (101a, 101b) respectively such that the horizontal holder plate (108) runs through and forms the bottom portion of the press brake apparatus. Die (107a, 107b, 107c) are placed on the upper surface of the holder plate (108) which is capable of holding said die (107a, 107b, 107c) in respective and appropriate positions such that the respective punch (106a, 106b, 106c) when moves downward towards the die (107a, 107b, 107c) along with the respective ram (103a, 103b, 103c) from the respective chamber (112a, 112b, 112c) when mates with these die (107a, 107b, 107c) will form a perfect mate between the respective punch (106a, 106b, 106c) and die (107a, 107b, 107c) of the respective chamber (112a, 112b, 1 2c) as desired. Adequate work piece space ( 13) is being provided in between the ram (103a, 103b, 103c) and the die (107a, 107b, 107c) of each camber such that the work piece such as metal plates can be placed on the die (107a, 107b, 07c) which is in between the ram (103a, 103b, 103c) and die (107a, 107b, 107c) of each chamber (112a, 112b, 112c) jointly or independently and the metal plate or plates
can be bend as desired with aid of the appropriate pressure exerted by the ram (103a, 103b, 103c) on the work piece.
Rotating means (104a, 104b, 104c) such as servo motors or driver motors are coupled with the respective ram (103a, 103b, 103c) with aid of respective coupling means (105a, 105b, 105c) such as ball screws for each chamber (112a, 112b, 112c). The rotating means (104a, 104b, 104c) along with the coupling means (105a, 105b, 105c) are fixed on to the respective ram (103a, 103b, 103c) such that the rotary motion with torque of the rotating means (104a, 104b, 104c) is converted to a vertical motion by the coupling means (105a, 105b, 105c) and thereby the respective ram (103a, 103b, 103c) are capable of being moved vertically on to the guides (102a, 102b, 102c, 102d) as desired. The rotating means (104a, 104b, 104c) and the coupling means (105a, 105b, 105c) are fixed to the body of the press brake apparatus thereby the vertical movement of the ram (103a, 103b, 103c) is achieved. The rotating means (104a, 104b, 104c) is connected to the drive controller (110) which in turn controls the rotating means (104a, 104b, 104c) by providing appropriate torque and rotation to the rotating means (104a, 104b, 104c). Thereby the movement of the ram (103a, 103b, 103c) associated to each chamber (112a, 112b, 112c) can be controlled independently. Particularly the pressure exerted by the ram ( 03a, 103b, 103c) on the work piece with respect to each chamber (1 12a, 112b, 112c) can be controlled independently as well as jointly with aid of the driver controller and thereby precise desired pressure of the ram (103a, 103b, 103c) on to the work piece can be achieved with respect to each chamber (112a, 112b, 1 12c).
A sensing means (111) is connected to the holder plate (108) which is capable of measuring the dimension of the work piece placed along with the die (107a, 107b, 107c). The sensing means (11 ) is also connected to main control unit (109) to which the sensing means (111) transfers the measured parameters of the work piece. The main control is also connected to the driver controller through which the ram (103a, 103b, 103c) can be controlled. The main control unit (109) can be accessed by the operator of the press break apparatus and the entire control of the press break apparatus can be controlled by the operator through the main control unit ( 09).
The sensing means (111) upon capturing the dimension parameters of the work piece, transfers it to the main control unit (109). The main control unit (109) upon taking necessary input from the operator activates the ram (103a, 103b, 103c) through the rotor means and the coupling means (105a, 105b, 105c). The ram (103a, 103b, 103c) pertaining to the respective chamber (112a, 112b, 112c) are activated by the main control unit (109) such that the bend desired by the operator on the metal plate is achieved by the press brake apparatus and thereby manufacture the desired metal plates. The main control unit (109) reads the size of the work piece and chooses the number of ram (103a, 103b, 103c) needed. It calculates the extent of movement of each ram (103a, 103b, 103c) and the torque to be applied by the motors. It also recommends the required die (107a, 107b, 107c) and punch (106a, 106b, 106c) present in a particular chamber (112a, 112b, 112c). The result is sent to the drive controller (1 0) which controls the movement and torque of the motors. The main control unit (109) also assists the operator in choosing the appropriate ram (103a, 103b, 103c) and die (107a, 107b, 107c) size.
As the chamber (112a, 112b, 112c) can be activated independently as well as jointly, desired shape of the work piece can be obtained. In addition to that desired pressure on each ram (103a, 103b, 103c) can be set and accordingly the set pressure can be exerted on the work piece.
The present invention describes a press brake apparatus with suitably sized rams and power to bend work piece such as sheet metal jobs of different sizes and thicknesses. If the job is small, one ram only will be used. If the job is wide, two or more rams can be used. This aspect of using the right sized ram saves energy.
Different rams can also use different dies and punches to do different bending of sheet metal at the same time. The dies are blocks with V shaped grooves. Wider and deeper V dies are needed for thicker material. Narrow and shallower dies are used for thinner material. For example, one ram can be set up for thinner material with narrow and shallow V dies. Another ram can be set up with wider and deeper V dies to handle thicker material.
Since the rams are small in width and independently driven the work piece is uniformly loaded. Therefore crowning may not be necessary. Even if required the middle ram alone can be moved as required to compensate for the variation. Since the rams are small, asymmetrical loading of ram is reduced and the drive motors experience equal loads.
The press brake apparatus is built with side steel plates connected by a holder plate (108). The holder plate (108) is mounted on the holder plate (108). The top of the press brake apparatus holds two or more rams depending on the size of the press brake apparatus.
The rams are guided to allow up and down movement and are driven by independent motors. The punches are mounted at the bottom of the rams. Referring to Fig. 2, a press brake apparatus (100) with multiple ram and die chambers is illustrated when engaged with a work piece (201) such as a small metal sheet. A work piece (201) which is a small metal sheet is kept on the work space (113) which is above first die (107a). The sensing means (111) measures the dimension of the work piece. The measured dimension is transferred to the main control unit (109). Based on the measured dimension transferred to the main control unit ( 09), the main control unit ( 09) recommends the operator the first ram (103a) associated with the first chamber (112a) or the main control unit (109) automatically activates the first ram (103a) present in the first chamber (112a) accordingly. In this case, the first ram (103a) present in first chamber (112a) is activated such that the work piece (201) is shaped in a desired manner with aid of the pressure exerted by the first ram (103a) on to the first die (107a) by the first drive motor (104a). The pressure exerted by the drive motor will be controlled by the drive controller (110). In this case, the ram (103a) associated with the first chamber (1 2a) alone is activated to achieve the desired work piece.
Referring to Fig. 3, a press brake apparatus (100) with multiple ram and die chambers is illustrated when engaged with a work piece such as a wide metal sheet (301). A work piece which is wide metal sheet is kept on the work space (113) which is above the first die (107a), the second die (107b) and the third die (107c). The sensing means (11 ) measures the dimension of the work piece. The
measured dimension is transferred to the main control unit (109). Based on the measured dimension transferred to the control unit, the control unit recommends the operator the first ram, the second ram and the third ram present in the first chamber, the second chamber and the third chamber respectively or the control unit automatically activates the first ram, the second ram and the third ram present in the first chamber, the second chamber and the third chamber respectively accordingly. In this case, all the three rams (103a, 103b, 103c) present in appropriate chamber (112a, 112b, 112c) are activated such that the work piece is shaped in a desired manner with aid of the pressure exerted by the all the three rams (103a, 103b, 103c) on to all the three dies (107a, 107b, 107c) by all the three drive motors (104a, 104b, 104c). The pressure exerted by the drive motors will be controlled by the drive controller (110). In this case, the ram (103a, 103b, 103c) associated with all the chambers (112a, 112b, 112c) are activated to achieve the desired work piece.
Referring to Fig. 4, a press brake apparatus with multiple ram and die chambers is illustrated when engaged with work pieces (401 , 402) such as small and thin metal sheet and small and thick metal sheet. Work pieces (401 , 402) which are small and thin metal sheet and small and thick metal sheet are kept on the work space (113) which is above the first die (107a) and the second die (107b). The sensing means (111) measures the dimension of the work pieces (410, 402). The measured dimension is transferred to the main control unit (109). Based on the measured dimension transferred to the control unit, the control unit recommends the operator the first ram (103a) and the second ram (103b) associated with the first chamber and the second chamber or the control unit automatically activates the appropriate ram present in appropriate chamber accordingly. In this case, the first and second ram (103a, 103b) present in the first and second chambers (112a, 112b) are activated such that the work piece is shaped in a desired manner with aid of the pressure exerted by the first ram and the second ram on to the first die and the second die by the drive motors (104a, 104b). The pressure exerted by the drive motors will be controlled by the drive controller (110). In this case, the ram (103a, 103b) associated with the chambers (112a, 112b) are activated to achieve the desired work piece.
Referring to Fig. 5, a method for manufacturing metal plates with desired bends and shapes on the metal plates is illustrated in accordance with another exemplary embodiment of the present invention. The method for manufacturing work piece such as metal plates with desired bends and shapes on the metal plates may be implemented comprising the steps of placing the work piece on to a workspace which is in between rams and dies. Subsequent to placing the work piece, the dimension of the work piece is measured with aid of a measuring means. Upon measuring the dimension of the work piece, the measured values are transferred to a main control unit. Based on the dimension of the work piece and on the desired bends and shapes on the work piece, the main control unit determines to activate appropriate drive motor. The main control unit then activates the appropriate drive motor which in turn moves appropriate ram vertically. The pressure exerted by the ram on to appropriate die is controlled by the control unit with aid of the drive motor torque. The vertical movement of the ram present in each camber can be controlled independently with respect to its associated die by the main control unit. The work piece present in the work piece space is pressed by the ram activated by the control unit on to its associated die such that the desired bend and the shape of the work piece are achieved. Upon completion of the bending and the shaping of the work piece the rams are released from the die and allowed to move vertically up.
In a method of manufacturing work piece with desired shapes, the method comprising the steps of: placing one or more work piece on a work piece space which are respectively associated with one or more punches and dies of respective chamber (501); measuring the dimension of the work piece placed on the work piece space with aid of a sensing means (502); transferring the measured dimension of the work piece to a main control unit (503); activating one or more punches associated with the respective chamber based on the measured dimensions of the work piece (504); and allowing the respective punch to exert desired pressure independently on the respective die through the work pieces such that the work piece attains desired bends and shapes independently and simultaneously (505).
In the method, the main control unit determines to activate appropriate rotating means such that the rotating means activates the appropriate punch to exert pressure on the associated die. In the method, the pressure exerted by the ram on the die is achieved by a torque generated by the rotating means.
In the method, movement of the ram present in each camber can be controlled independently with respect to its associated die by the main control unit.
In the method, the work piece present in the work piece space is pressed by the punch activated by the control unit on to its associated die independently from the other punch such that the desired bend and the shape of the work piece are achieved independently.
In the method, upon completion of the bending and the shaping of the work piece the punch along with its ram are released from the die and allowed to move to its original position.
Claims
1. A press brake apparatus for manufacturing work piece with desired shapes the press brake apparatus comprising:
one or more ram each accommodated in respective chamber, the ram can be moved to and fro in its respective chamber;
one or more punch each attached to its respective ram;
one or more die each placed in association with its respective punch and chamber; and
a work piece space located between the punch and die to place the work piece, wherein each ram along with its punch can be moved to and fro in its respective chamber independently from the other such that each ram along with its punch can exert pressure on the work piece with respect to its associated die independently from the other.
2. The press brake apparatus as claimed in claim 1 , comprising guides in each of the chamber to enhance precise movement of the ram along with its punch in the respective chamber.
3. The press brake apparatus as claimed in claim 1 , comprising side frames within which the press brake apparatus is housed.
4. The press brake apparatus as claimed in claim 1 , wherein the die is placed intact on a holder plate which is attached to the side frames of the press brake apparatus.
5. The press brake apparatus as claimed in claim 1 , comprising rotating means coupled to the respective ram through respective coupling means.
6. The press brake apparatus as claimed in claim 5, wherein the coupling means enables the respective ram to move to and fro in the respective chamber with aid of threads present in the coupling means when the respective rotating means is activated.
7. The press brake apparatus as claimed in any one of the preceding claims, comprising a sensing means attached to the dies which can sense and measure the dimension of the work piece kept in the work piece space and communicate it to a main control unit which is electrically connected to the sensing means.
8. The press brake apparatus as claimed in any one of the preceding claims, comprising a drive controller which is electrically connected to the rotating means and to the main control unit such that the main control unit when required can electrically control the rotation of the rotating means thereby controlling the to and fro movement of the ram in the chamber.
9. The press brake apparatus as claimed in claim 8, wherein the main control unit can control the to and fro motion of the each ram independently by activating the respective rotating means based on the dimension of the work piece placed in the work piece space.
10. The press brake apparatus as claimed in any one of the preceding claims, wherein first ram, first die, first punch, first coupling means, first rotating means are associated with first chamber and second ram, second die, second punch, second coupling means, second rotating means are associated with second chamber and third ram, third die, third punch, third coupling means, third rotating means are associated with third chamber.
11. The press brake apparatus as claimed in any one of the preceding claims, wherein the work piece can be placed on the work piece space such that the work piece will be exposed to one or more of the associated chamber depending on the dimension of the work piece.
12. The press brake apparatus as claimed in any one of the preceding claims, wherein work pieces varying in shapes and thickness can be placed on the work piece space independently exposed to the associated chamber such that the work pieces can be processed independently and simultaneously.
13. The press brake apparatus as claimed in any one of the preceding claims, wherein the rotating means is a drive motor.
14. A method of manufacturing work piece with desired shapes, the method comprising the steps of:
placing one or more work piece on a work piece space which are respectively associated with one or more punches and dies of respective chamber;
measuring the dimension of the work piece placed on the work piece space with aid of a sensing means;
transferring the measured dimension of the work piece to a main control unit; activating one or punches associated with the respective chamber based on the measured dimensions of the work piece; and
allowing the respective punch to exert desired pressure independently on the respective die through the work pieces such that the work piece attains desired bends and shapes independently and simultaneously.
15. The method as claimed in claim 14, wherein the main control unit determines to activate appropriate rotating means such that the rotating means activates the appropriate punch to exert pressure on the associated die.
16. The method as claimed in claim 15, wherein the pressure exerted by the ram on the die is achieved by a torque generated by the rotating means.
17. The method as claimed in any one of the preceding claims 15 to 17, wherein movement of the ram present in each camber can be controlled independently with respect to its associated die by the main control unit.
18. The method as claimed in any one of the preceding claims 15 to 18, wherein the work piece present in the work piece space is pressed by the punch activated by the control unit on to its associated die independently from the other punch such that the desired bend and the shape of the work piece are achieved independently.
9. The method as claimed in any one of the preceding claims 15 to 19 wherein upon completion of the bending and the shaping of the work piece the punch along with its ram are released from the die and allowed to move to its original position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN3147CH2010 | 2010-10-22 | ||
| IN3147/CHE/2010 | 2010-10-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012053004A1 true WO2012053004A1 (en) | 2012-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IN2011/000712 WO2012053004A1 (en) | 2010-10-22 | 2011-10-17 | A press brake apparatus with multiple chambers and a method for manufacturing metal plates with desired bends and shapes |
Country Status (1)
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| WO (1) | WO2012053004A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20120894A1 (en) * | 2012-05-23 | 2013-11-24 | Alessandro Mazza | BENDER |
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| EP0096211A1 (en) * | 1982-06-07 | 1983-12-21 | Hämmerle AG | Tool arrangement for a folding press |
| DE3245755A1 (en) * | 1982-12-10 | 1984-06-14 | Dorstener Maschinenfabrik Ag, 4270 Dorsten | Method for correcting the bending line of the bending tool of a bending press, in particular a folding press |
| GB2191724A (en) * | 1986-06-20 | 1987-12-23 | Amada Co Ltd | Multistep bending |
| EP1658908A1 (en) * | 2003-06-23 | 2006-05-24 | Amada Company, Limited | Device and method for bending, and bending die |
| EP1844870A1 (en) * | 2004-12-27 | 2007-10-17 | Amada Company, Ltd. | Workpiece bending angle detecting device and workpiece bending machine |
| JP2008178920A (en) * | 2001-10-23 | 2008-08-07 | Amada Co Ltd | Bending machine |
| US20090071223A1 (en) * | 2007-09-19 | 2009-03-19 | Rogers Bryan L | Staged Tooling Technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0096211A1 (en) * | 1982-06-07 | 1983-12-21 | Hämmerle AG | Tool arrangement for a folding press |
| DE3245755A1 (en) * | 1982-12-10 | 1984-06-14 | Dorstener Maschinenfabrik Ag, 4270 Dorsten | Method for correcting the bending line of the bending tool of a bending press, in particular a folding press |
| GB2191724A (en) * | 1986-06-20 | 1987-12-23 | Amada Co Ltd | Multistep bending |
| JP2008178920A (en) * | 2001-10-23 | 2008-08-07 | Amada Co Ltd | Bending machine |
| EP1658908A1 (en) * | 2003-06-23 | 2006-05-24 | Amada Company, Limited | Device and method for bending, and bending die |
| EP1844870A1 (en) * | 2004-12-27 | 2007-10-17 | Amada Company, Ltd. | Workpiece bending angle detecting device and workpiece bending machine |
| US20090071223A1 (en) * | 2007-09-19 | 2009-03-19 | Rogers Bryan L | Staged Tooling Technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20120894A1 (en) * | 2012-05-23 | 2013-11-24 | Alessandro Mazza | BENDER |
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