Classifications

• • 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
  • B21D28/00—Shaping by press-cutting; Perforating
  • B21D28/24—Perforating, i.e. punching holes
  • B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
• • 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
  • B21D28/00—Shaping by press-cutting; Perforating
  • B21D28/002—Drive of the tools
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/869—Means to drive or to guide tool
  • Y10T83/8727—Plural tools selectively engageable with single drive
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/869—Means to drive or to guide tool
  • Y10T83/8821—With simple rectilinear reciprocating motion only
  • Y10T83/8828—Plural tools with same drive means
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/869—Means to drive or to guide tool
  • Y10T83/8821—With simple rectilinear reciprocating motion only
  • Y10T83/8841—Tool driver movable relative to tool support
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/929—Tool or tool with support
  • Y10T83/9411—Cutting couple type
  • Y10T83/9423—Punching tool
  • Y10T83/9425—Tool pair

Definitions

• Patents US 5199293 and US 5092151 disclose a mechanism, in which a force is directed to a ram moving a tool, through a control head of the ram using two or more sloping surfaces. When the sloping surfaces move relative to each other, the movement produced by the drive element of the operating device of the ram is directed as desired to the blank being machined.
• patent FI 108924 is a ram drive head and control element with a construction as a roller-sloping-surface pair. In the constructions described above, a rotating revolver type of tool holder is generally used, even though a linear tool holder would be more economical in terms of manufacturing costs.
• Publications US 2458160 and DE 3339340 disclose sheet-material machining centres.
• the invention is intended to create a punch press that can be manufactured more economically than before, in which a linear tool holder is used.
• the characteristic features of the punch press according to the present invention are stated in the accompanying Claim 1. If the same precise positioning operating device is used to position the ram relative to the tools and to drive the tools by means of the ram, a considerably cheaper implementation of a punch press will be achieved.
• the term driving the tools by means of the ram refers to creating the necessary compressive movement.
• Pneumatic or hydraulic cylinders can be used as the return cylinders. It is self-evident that many other types of cylinder and springs, which can be operated, for example, using nitrogen, are suitable as the return means.
• the cylinders are preferably pneumatic, because great forces are not required in the application. In addition, a pneumatic embodiment is cleaner in use.
• Figure 5 shows a second embodiment of the plunger mechanism according to the invention, in the transfer position
• Figure 6 shows a third embodiment of the plunger mechanism according to the invention, in the transfer position.
• blanks 12 are fed for machining on a blank 12 feed line 16 and are removed after machining on an exit line 18.
• the blanks shown in Figure 1 are of plate material and are fed continuously for machining. In the lines there can be rotating rollers, which guide the blanks forward (not shown) .
• the feed line 16 can also be based on a belt solution, in which an 5 endless belt 17 runs around the feed line 16.
• Tools 20 are used to machine the blanks 12.
• the tools 20 comprise a plunger 22 and a stop 24, by means of the joint action of which the necessary holes and impressions are made in the blanks 12. Machining takes place by pressing the plunger 22 against the stop 24.
• the 10 tools 20 are situated in a tool holder 26, thus forming a tool series 28.
• the blanks 12 are fed between the plunger 22 and the stop 24, where their machining takes place.
• the plane, in which the blanks are machined, i.e. the plane in which the blank is during machining, is referred to as the work plane.
• the punch press 10 includes an operating device 38 for moving the drive element 36.
• the moving of the drive element using the operating device should be very precise, so that the drive element will move the ram as desired.
• the correct tool is selected by moving the ram to the location of the desired tool.
• the ram 30 is moved accurately to the location of the correct tool 20 in the longitudinal direction of the tool holder 26 using a moving element 40, which in the case of Figure 1 is also the drive element 36 and thus moves using the same operating device 38.
• the grip means include a grip pin 37.
• moving can also be implemented using a moving element, which is separate from the drive element, but which nevertheless operates using the same operating device as the moving element (not shown) .
• Figure 1 shows that the punch press 10 includes the drive element 36, by means of which the ram is pressed as desired. There are return means in connection with the ram 30 for moving the ram upwards . Springs or cylinders can act as the return means .
• Figures 2 - 4 show the construction and operation of some return means are shown in greater detail.
• a set of co-ordinates x-, y-, and z- are marked in the figure.
• the x- and y-axes are the other way round (not shown) , but references in the present text to movements in the set of co-ordinates are to the co-ordinates shown.
• the axes of the co-ordinates are, in the case of the figure, at an angle of 90° to each other.
• the feed line 16 and the exit line 18 are permanently attached to the machine body 50.
• the feed belt 17 of the feed line 16 of course moves relative to the machine body, as does the exit belt 19 of the exit line 18.
• the feed line 16 and the exit line 18 are thus fixed in the direction of the x-axis relative to the machine body 50.
• the alignment of the blank 12 and the tool 20 as desired in the direction of the y-axis takes place by moving the blank 12 relative to the machine body 50 and thus to the operating- device body 52.
• the operating-device body 52 remains stationary in the y-direction relative to the machine body.
• the movement of the blank 12 in the y-direction takes place using the feed means, i.e. in the base of Figure 1 using a carriage 54.
• the carriage 54 moves in the direction of the y-axis.
• the carriage 54 which moves only in the direction of the y-axis, positions its location, and at the same time the location of the blank 12 very precisely in the y-direction.
• the carriage and the operating device align the blank and the tool in a direction at right angles to each other.
• the linear movement is implemented in both directions with the aid of a rail structure.
• the operation of the return means is described in greater detail in connection with Figures 2 - 4.
• the return means are central to the implementation of the invention.
• the solution according to the invention could be implemented in many other ways, for instance, with several opposed cylinders.
• the implementation of the solution according to the invention preferably utilizes a construction similar to the cylinder construction shown in connection with Figures 2 - 4, allowing the ram to be brought as desired to three main positions.
• the three main positions of the ram are the work position, the rest position, and the transfer position.
• the moving element of the ram comprise a ram drive device operated by an operating device and of grip means in connection with it.
• the roller of the drive device does not touch the ram.
• the roller In the work position, the roller is, in turn, on top of the sloping surface of the ram.
• the transfer position the drive device is located in such a way that the grip means belonging to the drive device are closed on the drive head of the ram.
• the ram 30 of the punch press according to the invention is in the transfer position.
• the ram In the transfer position, the ram is higher than in the rest position and thus also higher than in the work position.
• the ram has moved upwards, i.e. in the positive direction in the z-axis compared to Figure 2, in which the ram is in the rest position.
• the ram 30 has moved upwards, when the roller nose 44 has guided the ram 30 to the side from on top of the drive head 34 and after this air has be led both to the lower cylinder chamber 86 below the lower piston 76 and to the upper cylinder chamber 84 above the upper piston 74.
• Figure 5 shows a second embodiment of the ram mechanism of the punch press according to the invention in the transfer position.
• the ram 30 of the punch press is in the transfer position.
• the ram In the transfer position, the ram is higher than in the rest position and thus also higher than in the work position.
• the ram 30 has moved upwards, when the roller nose 44 has been guided to the side off the drive head 34 of the ram and on top of the grip shape 92.
• the grip shape 92 in question can be a full-width grip groove 94.
• edges 94 ' which are shaped in such a way that the roller nose rises out of the groove when the ram is locked into the work position.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Press Drives And Press Lines (AREA)
• Shaping Metal By Deep-Drawing, Or The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36293850

Family Applications (1)

Country Status (5)

Families Citing this family (8)

Family Cites Families (8)

• 2006
  • 2006-04-21 FI FI20065256A patent/FI119281B/fi active
• 2007
  • 2007-04-23 WO PCT/FI2007/050213 patent/WO2007122294A1/en not_active Ceased
  • 2007-04-23 EP EP20070730700 patent/EP2010341A1/de not_active Withdrawn
  • 2007-04-23 US US12/226,167 patent/US20090188364A1/en not_active Abandoned
  • 2007-04-23 RU RU2008145900/02A patent/RU2008145900A/ru not_active Application Discontinuation

Non-Patent Citations (1)

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