WO2019201677A1 - Rotary table having a clamping brake - Google Patents
Rotary table having a clamping brake Download PDFInfo
- Publication number
- WO2019201677A1 WO2019201677A1 PCT/EP2019/058952 EP2019058952W WO2019201677A1 WO 2019201677 A1 WO2019201677 A1 WO 2019201677A1 EP 2019058952 W EP2019058952 W EP 2019058952W WO 2019201677 A1 WO2019201677 A1 WO 2019201677A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- force
- brake
- rotary table
- spring
- clamping
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
- B23Q16/02—Indexing equipment
- B23Q16/08—Indexing equipment having means for clamping the relatively movable parts together in the indexed position
- B23Q16/10—Rotary indexing
- B23Q16/105—Rotary indexing clamping with a disc brake
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2220/00—Machine tool components
- B23Q2220/004—Rotary tables
Definitions
- the invention relates to a rotary table with a braking device, in particular comprising a stationary housing and a relative to the stationary housing rotatably mounted about a central axis of rotation switch plate for receiving a workpiece, wherein between the stationary housing and the rotatably mounted switch plate at least one is formed by a clamping position operable in a non-clamping position clamping brake and wherein the clamping brake comprises a spring element for actuating a brake pad and a means for applying a variable force on the spring element, wherein the means can exert at least one controllable in the direction of the spring force of the spring element, in particular in size adjustable force directly or indirectly on the brake pad.
- a rotary table for positioning workpieces is already known from DE 20 2014 103 937 U1.
- Rotary tables are used in particular as swiveling or positioning axes and as workpiece carriers in machine tools, but also in the field of assembly tasks.
- Round table units are now integrated in high-precision machines as essential components.
- rotary tables for machine tools are known, which are incrementally indexed and clamped after each partial step so that the machining of the workpiece or workpieces can take place in a defined position when the rotary table is at a standstill.
- these round tables are clamped by one or more clamping devices acting on or near the outer periphery of the table. Such clamps are operated either purely mechanically or hydraulically.
- a rotary table which comprises a stationary housing and a relative to the stationary housing, about a central axis of rotation rotatably mounted switch plate for receiving a workpiece.
- the clamping brake comprises a spring element for actuating a brake pad and means for applying a variable force to the spring element.
- the means can exert at least one force which can be controlled in the direction of the spring force of the first spring element, in particular be adjustable in size, directly or indirectly on the brake pad. It is favorable that the clamping brake can delay the rotation of the indexing plate or fix the indexing plate against rotation relative to the stationary housing. This arrangement improves the clamping and, as a result, the system can be operated with a higher positioning accuracy.
- said means also controllable against the spring force of the spring element Can exert force on the brake pad.
- the rotatably mounted switch plate can be released from the clamping as soon as the taxable force exceeds the spring force of the spring element.
- the rotary table is formed so that the clamping brake has a brake disc and a brake spring.
- the brake spring is the spring element.
- the brake spring is designed to be biased in the clamping brake, so that in a state in which the turntable and its active units are de-energized or not ready for operation, or alternatively in a ready-to-operate state, a spring force Press brake pad against the brake disc and the clamping brake is in the clamping position on.
- This state is referred to as "normally closed", because regardless of the presence of a hydraulic brake, a readiness for operation or even in the event of failure of a voltage or power supply, the brake always safely blocks the turntable.
- a design is favorable in which the brake pad is acted upon for displacing the clamping brake from the clamping position into the non-clamping position by a force of the means.
- a force of the means By activating this force, preferably a hydraulically or pneumatically generated force by means of z.
- a force acts on the brake pad against the spring force of the spring element. This will open the
- the brake pad is urged in the direction of the spring force to completely block a rotational movement of the shift plate with an additional force, preferably a hydraulically or pneumatically generated force, to the spring force of the spring element.
- an additional force preferably a hydraulically or pneumatically generated force
- the clamping brake increases the resistance against rotation of the indexing plate, whereby, for example, during assembly of a workpiece, higher forces can act on the indexing plate without the indexing plate rotating.
- Flier also a particularly effective Bremsmög- ability is achieved, especially when high masses must be brought to a standstill, which would take too long with only a mechanical spring brake.
- the clamping force can be set as desired.
- the means presses the brake pad against a second spring element by means of the spring element and the second spring element presses the brake disk against the housing.
- the spring force and the braking forces and the counterforces act parallel to the central axis of rotation.
- the rotary table according to the invention is embodied in one embodiment that the braking forces of the brake pad act directly on the indexing table. It is favorable that no additional braking force losses caused by interposed components.
- fluid-carrying lines for the hydraulics or pneumatics for activating the force of the means are formed within the stationary housing and the indexing plate. This turns out to be
- the fluid-carrying lines thus run within the rotary table and consequently provide an additional source of danger due to lines rotating with the indexing plate or extending outside the rotary table. to avoid. If the supply of the fluid fails, z. B. by an interruption of a line, so the effect of the spring element still remains secure.
- the force of the means acts directly on or on the spring element, as it were in series with the spring element.
- the switching plate is blocked by the spring element in the case of inactive means or in the event of failure of the action of the agent. This has the consequence that the reliability of the rotary table is significantly increased because the switch plate can not rotate in case of failure.
- the failure of the action of the agent is a condition in which the pneumatics for generating the force of the agent is inactive. Further, the failure of the action of the agent is a state in which control electronics for controlling the force of the agent is inactive.
- Fig. 1 is a sectional view of a rotary table with a clamping brake
- FIG. 2 is a schematic diagram of a clamping brake for a rotary table
- Fig. 3 is a schematic diagram of an alternative embodiment of a
- FIG. 1 shows a sectional view of a rotary table 1 with a clamping brake 4.
- the rotary table 1 has a stationary housing 2 and a relative to the stationary housing 2 about a central axis of rotation Z rotatably mounted switch plate 3 for receiving a workpiece.
- two clamping brakes 4 which can be actuated from a clamping position into a non-clamping position, are formed between the stationary housing 2 and the rotatably mounted indexing plate 3.
- the clamping brakes 4 each have a spring element 5 for actuating a brake pad 7 and a means 6 for applying a variable force to the spring element 5.
- the clamping brake 4 has a brake disc 8 and a brake spring 9.
- the clamping brakes 4 are shown once in the clamping position and once in the non-clamping position.
- the part of the clamping brake 4, consisting of the brake pad 7 and the brake spring 5, 9, is respectively fixed to the stationary housing 2 by means of a fastening means.
- the brake disc 8 of the clamping brake 4 is attached to the switching plate 3 by means of a fastening means.
- the respective fastening means is z. B. formed as a screw.
- the clamping brake 4 Since the brake spring 9 is installed under bias in the clamping brake 4, the clamping brake 4 is (in the "normally closed” state) in the clamping position in a state in which the spring force the brake block 7 against the brake disc 8 is pressed.
- a force of the means with 6, preferably a hydraulic or pneumatic force entge conditions of the spring force of the first spring element 5
- the brake pad 7 is moved from the clamping position to the non-clamping position.
- the direction of movement of the brake pad 7 from the clamping position to the non-clamping position runs parallel to the axis of rotation Z.
- FIG. 2 shows a schematic diagram of a clamping brake 4 for a rotary table 1.
- the clamping brake 4 is formed between a stationary housing 2 and a rotatably mounted indexing plate 3 and comprises a brake pad 7, a brake disc 8, a spring element 5 and a means 6
- FIG. 2 a schematic diagram of FIG. 2 has a fluid-carrying line 10 which leads to the means 6 of the clamping brake 4.
- the brake pad 7 is movably mounted in the clamping brake 4 so that it can be moved back and forth in a vertical direction parallel to the central axis of rotation between the stationary housing 2 and the rotatably mounted indexing plate 3.
- the displacement of the brake pad 7 results from the forces acting on it.
- the spring 6 of the spring element 5 acts in the direction of the switching plate 3.
- the means 6 shown here by way of example as hydraulically actuated piston
- the means 6 is connected in series to the spring element 5, add or subtract the forces of the two com ponents.
- the direction of action or height of the force of the adjustable means 6 can be adjusted by means of the leading to the means 6 fluid-carrying line.
- 3 shows a schematic diagram of an alternative embodiment of a clamping brake 4 for a rotary table 1.
- the clamping brake 4 is formed between a stationary housing 2 and a rotatably mounted indexing plate 3 and comprises a brake pad 7, a brake disc 8, a spring element 5, a second Spring element 11 and a means 6, namely
- the schematic diagram from FIG. 3 has two fluid-carrying lines 10a, 10b which lead to the piston 6 of the clamping brake 4.
- the spring element 5 presses the brake pad 7 against the second spring element 11.
- the second spring element 11 presses the brake disk 8 against the housing 2 and the rotating shift plate 3 is braked to standstill.
- the indexing plate 3 is non-positively and play-free connected to the brake disc 8.
- the brake disc 8 is clamped between the second spring element 11 and the housing 2.
- a fluid is pressed through the fluid-carrying line 10b.
- a force acts on the piston 6, which is pressed against the brake pad 7 and increases the clamping or braking force.
- to release the clamping or braking force is pressed by the fluid-carrying line 10a.
- a force acts on the piston 6, which is pressed against the spring element 5.
- the brake disc 8 is released and the switching plate 3 can rotate.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Machine Tool Positioning Apparatuses (AREA)
- Machine Tool Units (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201980014545.9A CN111741833B (en) | 2018-04-19 | 2019-04-09 | Rotary table with clamping brake |
JP2020545760A JP7308219B2 (en) | 2018-04-19 | 2019-04-09 | Rotary table with clamp brake |
EP19717295.0A EP3727744A1 (en) | 2018-04-19 | 2019-04-09 | Rotary table having a clamping brake |
KR1020237024900A KR20230113658A (en) | 2018-04-19 | 2019-04-09 | Rotary table having a clamping brake |
KR1020207025614A KR20200116994A (en) | 2018-04-19 | 2019-04-09 | Turntable with clamping brake |
SG11202008072TA SG11202008072TA (en) | 2018-04-19 | 2019-04-09 | Rotary table having a clamping brake |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018109430.2A DE102018109430A1 (en) | 2018-04-19 | 2018-04-19 | Rotary table with clamping brake |
DE102018109430.2 | 2018-04-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019201677A1 true WO2019201677A1 (en) | 2019-10-24 |
Family
ID=62251883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2019/058952 WO2019201677A1 (en) | 2018-04-19 | 2019-04-09 | Rotary table having a clamping brake |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP3727744A1 (en) |
JP (1) | JP7308219B2 (en) |
KR (2) | KR20200116994A (en) |
CN (1) | CN111741833B (en) |
DE (2) | DE102018109430A1 (en) |
SG (1) | SG11202008072TA (en) |
WO (1) | WO2019201677A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019005799A1 (en) * | 2019-08-17 | 2021-02-18 | Sauter Feinmechanik Gmbh | Turntable |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10332424A1 (en) * | 2003-07-16 | 2005-02-24 | Peiseler Gmbh & Co. Kg | Directly driven turntable, comprising spring elements acting on brake disk via clamping lips |
US20120217691A1 (en) * | 2008-11-19 | 2012-08-30 | Tsudakoma Kogyo Kabushiki Kaisha | Clamping device in main shaft driving device for machine tool |
DE202014103937U1 (en) | 2014-08-22 | 2014-09-05 | Fibro Gmbh | Schalttellerklemmung |
US20160243660A1 (en) * | 2015-02-24 | 2016-08-25 | Fanuc Corporation | Rotary table |
DE102017101903A1 (en) * | 2016-02-19 | 2017-08-24 | Fanuc Corporation | Rotary table device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008114306A (en) | 2006-10-31 | 2008-05-22 | Yukiwa Seiko Inc | Rotating table device |
DE102009014117A1 (en) * | 2009-03-24 | 2010-10-07 | Peiseler Gmbh & Co. Kg | clamping device |
JP5277057B2 (en) * | 2009-04-14 | 2013-08-28 | 津田駒工業株式会社 | Rotation resistance applying device in spindle drive device for machine tool |
-
2018
- 2018-04-19 DE DE102018109430.2A patent/DE102018109430A1/en active Pending
- 2018-05-03 DE DE202018102467.1U patent/DE202018102467U1/en active Active
-
2019
- 2019-04-09 EP EP19717295.0A patent/EP3727744A1/en active Pending
- 2019-04-09 KR KR1020207025614A patent/KR20200116994A/en not_active IP Right Cessation
- 2019-04-09 SG SG11202008072TA patent/SG11202008072TA/en unknown
- 2019-04-09 KR KR1020237024900A patent/KR20230113658A/en not_active Application Discontinuation
- 2019-04-09 WO PCT/EP2019/058952 patent/WO2019201677A1/en unknown
- 2019-04-09 CN CN201980014545.9A patent/CN111741833B/en active Active
- 2019-04-09 JP JP2020545760A patent/JP7308219B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10332424A1 (en) * | 2003-07-16 | 2005-02-24 | Peiseler Gmbh & Co. Kg | Directly driven turntable, comprising spring elements acting on brake disk via clamping lips |
US20120217691A1 (en) * | 2008-11-19 | 2012-08-30 | Tsudakoma Kogyo Kabushiki Kaisha | Clamping device in main shaft driving device for machine tool |
DE202014103937U1 (en) | 2014-08-22 | 2014-09-05 | Fibro Gmbh | Schalttellerklemmung |
US20160243660A1 (en) * | 2015-02-24 | 2016-08-25 | Fanuc Corporation | Rotary table |
DE102017101903A1 (en) * | 2016-02-19 | 2017-08-24 | Fanuc Corporation | Rotary table device |
Also Published As
Publication number | Publication date |
---|---|
CN111741833A (en) | 2020-10-02 |
DE202018102467U1 (en) | 2018-05-14 |
JP2021515707A (en) | 2021-06-24 |
JP7308219B2 (en) | 2023-07-13 |
KR20230113658A (en) | 2023-07-31 |
CN111741833B (en) | 2022-10-25 |
KR20200116994A (en) | 2020-10-13 |
EP3727744A1 (en) | 2020-10-28 |
SG11202008072TA (en) | 2020-09-29 |
DE102018109430A1 (en) | 2019-10-24 |
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