WO2006131772A2 - Rapid positioning & clamping system (rpcs) - Google Patents

Rapid positioning & clamping system (rpcs) Download PDF

Info

Publication number
WO2006131772A2
WO2006131772A2 PCT/HR2006/000013 HR2006000013W WO2006131772A2 WO 2006131772 A2 WO2006131772 A2 WO 2006131772A2 HR 2006000013 W HR2006000013 W HR 2006000013W WO 2006131772 A2 WO2006131772 A2 WO 2006131772A2
Authority
WO
WIPO (PCT)
Prior art keywords
clamping
rpcs
machines
work peace
positioning
Prior art date
Application number
PCT/HR2006/000013
Other languages
French (fr)
Other versions
WO2006131772A3 (en
Inventor
Josip Zavacki
Original Assignee
Josip Zavacki
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Josip Zavacki filed Critical Josip Zavacki
Publication of WO2006131772A2 publication Critical patent/WO2006131772A2/en
Publication of WO2006131772A3 publication Critical patent/WO2006131772A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/06—Arrangements for positively actuating jaws
    • B25B1/10—Arrangements for positively actuating jaws using screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2405—Construction of the jaws
    • B25B1/2431—Construction of the jaws the whole jaw being pivotable around an axis perpendicular to the actioning direction of the vice
    • B25B1/2442—Construction of the jaws the whole jaw being pivotable around an axis perpendicular to the actioning direction of the vice around a horizontal axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2405—Construction of the jaws
    • B25B1/2473—Construction of the jaws with pull-down action on the workpiece

Definitions

  • This patent is design to be improvement in construction of milling machines and EDM machines. It can also be used as separate auxiliary fixture that can be mounted on machine table.
  • RPCS is system that allows great reduction of the time needed for clamping, positioning and measuring of the work peace before milling. It is design for general purpose of clamping as part of machine.
  • clamps Gogs The most important parts of the whole system are clamps Gogs). Screws simultaneously drive them and they are positioning work peace in ideal position in the middle of the machine table. In the same time, work peace does not need to be precise. It can be even trapezoid or rhomboid and that will not affect precision of the clamping. Clamps are adjustable on work peace for angle B. That is also important for transmission of the clamping force on work peace. All of that allows clamping of the raw material with minimal costs.
  • hydraulic system After positioning of the work peace, hydraulic system lifts all clamps. They are rotating over spherical nut for clamping angle ⁇ , simultaneously clamping the work peace witch is remaining in position. The vertical component of the clamping force is pushing the work peace down on table. That gave us additional stability of the work peace in position for milling.
  • the RPCS makes possible:
  • Fig.1 Isometric view of the machine table with RPCS
  • Fig.2 Top view of the clamping with RPCS
  • Driving mechanism over transmission simultaneously drive screw (Pos.4). Every pare of clamps (Pos.5) is driven simultaneously and they are moving work peace (Pos.2) in the center of the machine table (Pos.1). Every clam adjusts itself on work peace by rotation around center (C) for angle ⁇ . That's why there is no need for measuring position of the work peace before milling.
  • the RPCS Clamp is assembly consisting of: Body of the clamp (Pos.5.1) Clamping plate (Pos.5.2) - Cover of the nut (Pos.5.3) Spherical nut (Pos.5.4) Hydraulic spring (Pos.5.5)
  • the work peace clamping starts after it came in the center of the machine table, by switching the valve of the hydraulic system.
  • the pressure of the oil moves hydraulic spring (Pos.5.5). It is mounted on clamp body (Pos.5.1) and lifting the clamp in clamping position rotating around center (C) for clamping angle a. Rotation is possible because of unique spherical nut (Pos.5.4), witch holds still suffering no clamping force.
  • Hydraulic clamping force Fc is multiplied caused by different moment arm of the force F and Fc. Clamping force is applied on work peace over clamping plate (Pos.5.2).
  • the body of the clamp has two upper (RzIOO) friction surfaces, witch are pressed on lower surface of the table (Pos.1), producing friction-holding force Ft. That force relieves driving mechanism of any clamping force.
  • RPCS has been designed to be part of the machine table as improvement in construction of the milling machines and EDM machines. Also the RPCS can be designed as additional fixture on exiting machines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

RPCS is the system for rapid positioning and clamping. It is new solution for clamping work peace on milling machines (classical, hi-speed,CNC machines) and EDM machines. By its use we can reduce time for preparation of the work peace (positioning, clamping, measuring of WPC), on the time level that we use on turning machines. The RPCS makes possible: - Positioning of the work peace in the middle of the machine table, - Not to measure parallelism and position of the work peace, - To mill even rough materials, - To mill top and side of the work peace with no interruption (dies & moulds), - Horizontal clamping instead of vertical (less clamping force needed), - Vertical component of the force for more stability. This patent is design to be improvement in construction of milling machines and EDM machines. It can also be used as separate auxiliary fixture that can be mounted on machine table.

Description

RAPID POSSITIONING & CLAMPING SYSTEM (RPCS)
Technical Field
This patent is design to be improvement in construction of milling machines and EDM machines. It can also be used as separate auxiliary fixture that can be mounted on machine table.
The producers in mechanical production, except high volume serial production, are facing the great production time lost on preparation of the work peace for milling.
That problem occurs on milling machines (hi-speed machines, CNC machines as well) and EDM machines. In Tool & Mould production the lost of production time, spent on preparation is about 20%. Unlike on milling machines, turning machines are more efficient (only 1% is lost on preparations).
Background Art
All machine producers are making machine tables with T slots, witch are used with auxiliary equipment for clamping of work peace on table. For this it is necessary to use a number of elements (T-nuts, long screws, clamping bars, shouldering elements, nuts, washers...), witch has to be supplied to every machine.
Beside that we can find different types of clamping systems (mechanical, hydraulic, pneumatic, magnetic), always design as additional equipment with more or less special use.
Disclosure of the Invention
RPCS is system that allows great reduction of the time needed for clamping, positioning and measuring of the work peace before milling. It is design for general purpose of clamping as part of machine.
The most important parts of the whole system are clamps Gogs). Screws simultaneously drive them and they are positioning work peace in ideal position in the middle of the machine table. In the same time, work peace does not need to be precise. It can be even trapezoid or rhomboid and that will not affect precision of the clamping. Clamps are adjustable on work peace for angle B. That is also important for transmission of the clamping force on work peace. All of that allows clamping of the raw material with minimal costs.
After positioning of the work peace, hydraulic system lifts all clamps. They are rotating over spherical nut for clamping angle α, simultaneously clamping the work peace witch is remaining in position. The vertical component of the clamping force is pushing the work peace down on table. That gave us additional stability of the work peace in position for milling.
By rotation α upper surface of the clamp is pressed on lower surface of the table, and friction between them prevents any movement of the work peace caused by vibrations during milling process. The screws and spherical nuts does not suffers any clamping force witch is crucial for precision and long lasting of the system.
The RPCS makes possible:
Positioning of the work peace in the middle of the machine table, Not to measure parallelism and position of the work peace, To mill even rough materials, To mill top and side of the work peace with no interruption. Attached drawings
Fig.1 Isometric view of the machine table with RPCS
Fig.2 Top view of the clamping with RPCS
Fig.3 Section view of the clamping with RPCS
Fig.4 Isometric view of the RPCS clamp (jog)
Fig.5 Isometric view of the spherical nut
Fig.6 Section detail view with explains working of the RPCS
Detail explanation of the RPCS
Driving mechanism (Pos.3) over transmission simultaneously drive screw (Pos.4). Every pare of clamps (Pos.5) is driven simultaneously and they are moving work peace (Pos.2) in the center of the machine table (Pos.1). Every clam adjusts itself on work peace by rotation around center (C) for angle β. That's why there is no need for measuring position of the work peace before milling.
The RPCS Clamp is assembly consisting of: Body of the clamp (Pos.5.1) Clamping plate (Pos.5.2) - Cover of the nut (Pos.5.3) Spherical nut (Pos.5.4) Hydraulic spring (Pos.5.5)
The work peace clamping starts after it came in the center of the machine table, by switching the valve of the hydraulic system. The pressure of the oil moves hydraulic spring (Pos.5.5). It is mounted on clamp body (Pos.5.1) and lifting the clamp in clamping position rotating around center (C) for clamping angle a. Rotation is possible because of unique spherical nut (Pos.5.4), witch holds still suffering no clamping force.
Hydraulic clamping force Fc is multiplied caused by different moment arm of the force F and Fc. Clamping force is applied on work peace over clamping plate (Pos.5.2). The body of the clamp has two upper (RzIOO) friction surfaces, witch are pressed on lower surface of the table (Pos.1), producing friction-holding force Ft. That force relieves driving mechanism of any clamping force.
Possible implementation of the RPCS
RPCS has been designed to be part of the machine table as improvement in construction of the milling machines and EDM machines. Also the RPCS can be designed as additional fixture on exiting machines.

Claims

1. RPCS positioning system, characterized by, two, three or more clamping pares of jogs, witch, by simultaneous motion, drive the work peace in the center of the machine table.
2. RPCS clamping system, characterized by, jogs that can rotate around the center of the spherical nut.
3. Jog by request 2, characterized by, unique shape that allows input of spherical nut in its body. Also it multiplies claming force by its shape and use that force for producing friction with machine table.
4. Spherical nut by request 2, characterized by, unique shape that makes possible jogs rotation for positioning angle α and clamping angle β, at the same time.
PCT/HR2006/000013 2005-06-10 2006-05-25 Rapid positioning & clamping system (rpcs) WO2006131772A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HRP20050527A 2005-06-10
HR20050527A HRP20050527A2 (en) 2005-06-10 2005-06-10 Rapid positioning and contracting system

Publications (2)

Publication Number Publication Date
WO2006131772A2 true WO2006131772A2 (en) 2006-12-14
WO2006131772A3 WO2006131772A3 (en) 2007-03-29

Family

ID=36889242

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HR2006/000013 WO2006131772A2 (en) 2005-06-10 2006-05-25 Rapid positioning & clamping system (rpcs)

Country Status (2)

Country Link
HR (1) HRP20050527A2 (en)
WO (1) WO2006131772A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106078278A (en) * 2016-09-07 2016-11-09 安徽龙锐模塑有限公司 A kind of clamping apparatus of carving and milling machine mould
CN107414385A (en) * 2017-08-18 2017-12-01 成都陵川特种工业有限责任公司 Improve exhaust manifold and the detent mechanism of flange welding efficiency

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1326933A (en) * 1919-04-05 1920-01-06 John O Holen Vise
US1490608A (en) * 1922-01-19 1924-04-15 Alfred E C Gilmour Holding block

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1326933A (en) * 1919-04-05 1920-01-06 John O Holen Vise
US1490608A (en) * 1922-01-19 1924-04-15 Alfred E C Gilmour Holding block

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106078278A (en) * 2016-09-07 2016-11-09 安徽龙锐模塑有限公司 A kind of clamping apparatus of carving and milling machine mould
CN107414385A (en) * 2017-08-18 2017-12-01 成都陵川特种工业有限责任公司 Improve exhaust manifold and the detent mechanism of flange welding efficiency

Also Published As

Publication number Publication date
HRP20050527A2 (en) 2007-03-31
WO2006131772A3 (en) 2007-03-29

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