CN107116388B - Automatic head changing mechanism of bridge type five-axis gantry machining center - Google Patents
Automatic head changing mechanism of bridge type five-axis gantry machining center Download PDFInfo
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- CN107116388B CN107116388B CN201710382634.1A CN201710382634A CN107116388B CN 107116388 B CN107116388 B CN 107116388B CN 201710382634 A CN201710382634 A CN 201710382634A CN 107116388 B CN107116388 B CN 107116388B
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- 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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
- B23Q3/157—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools
- B23Q3/15706—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools a single tool being inserted in a spindle directly from a storage device, i.e. without using transfer devices
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- Automatic Tool Replacement In Machine Tools (AREA)
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Abstract
The invention relates to an automatic head changing mechanism of a bridge type five-axis gantry machining center, which belongs to the technical field of numerical control machining centers and comprises a milling head, a C-axis main shaft arranged in a ram of the bridge type five-axis gantry machining center, a pull cylinder, a pull claw, two pull rings I and two pull rings II, wherein the pull cylinder is arranged at the end part of the C-axis main shaft, the outer end of an inner hole of the pull cylinder is provided with a conical surface, the milling head is provided with a pull ring fixing hole I and a pull ring fixing hole II which are respectively provided with the pull ring I and the pull ring II, the peripheries of the pull ring I and the pull ring II are provided with a conical surface, the conical surface of the pull ring II is in clearance fit with the conical surface of the pull cylinder, the pull ring fixing hole II is in transition fit with the pull ring II, the conical surface of the pull ring I is in transition fit with the conical surface of the pull cylinder, and the side edge of the pull ring fixing hole I is provided with a glue injection hole. The tensioning and releasing of the pull cylinder and the pull ring are controlled through hydraulic pressure, so that the automatic grabbing and replacing of the functional milling head are realized; and the vertical milling head is ensured to be coaxial with the C-axis main shaft by matching with the glue injection hole.
Description
Technical Field
The invention belongs to the technical field of numerical control machining centers, and particularly relates to an automatic head changing mechanism of a bridge type five-axis gantry machining center.
Background
The bridge type five-axis gantry moving boring and milling machining center has the characteristics of large machining range, large cutting force and the like. The five-axis milling machine tool is suitable for machining large parts, the machine tool is developed from the machining capacity of a single surface to the machining capacity of five surfaces along with the development of a part machining process, the machine tool has five-axis machining capacity up to now, the five-axis machining capacity depends on the performance and the machining capacity of various functional milling heads of the machine tool to a great extent, and the functional milling heads are reasonably arranged according to needs, so that the machine tool is more economical and practical, and the machining range is expanded greatly. However, in the existing various functional milling heads, an operator needs to manually fasten bolts when replacing the milling heads, and the bolts need to be alternately screwed in order to ensure the mounting precision of the milling heads, so that the head replacement efficiency is low.
Disclosure of Invention
The invention aims to provide an automatic head changing mechanism of a bridge type five-axis gantry machining center, which can realize quick tensioning and loosening of a multifunctional milling head, improve the head changing efficiency and reduce the labor intensity.
The invention relates to an automatic head changing mechanism of a bridge type five-axis gantry machining center, which comprises a milling head, a C-axis main shaft arranged in a ram of the bridge type five-axis gantry machining center, a pulling cylinder, a pulling claw, two pulling rings I and two pulling rings II, wherein the pulling cylinder is arranged at the end part of the C-axis main shaft, the outer end of an inner hole of the pulling cylinder is provided with a conical surface, the milling head is provided with a pulling ring fixing hole I and a pulling ring fixing hole II which are respectively provided with the pulling ring I and the pulling ring II, the peripheries of the pulling ring I and the pulling ring II are provided with a conical surface, the pulling ring I and the pulling ring II are internally provided with clamping grooves which are matched with the pulling claw to realize tensioning and loosening, the conical surface of the pulling ring II is in clearance fit with the conical surface of the pulling cylinder, the pulling ring fixing hole II is in transition fit with the pulling ring II, the conical surface of the pulling ring I is in transition fit with the conical surface of the pulling cylinder, and the pulling ring fixing hole I is in clearance fit, and the side edge of the pulling ring fixing hole I is provided with a glue injection hole.
And a gasket is arranged between the pulling cylinder and the C-axis main shaft, and the pulling cylinder is installed on the C-axis main shaft through a screw. The coplanarity of the four pull cylinders and the pull ring limiting surface is realized by measuring and grinding the thickness of the gasket, and the tensioning precision of the milling head is ensured.
The first pull ring and the second pull ring are installed on the milling head through screws.
The conical surface of the pull ring II is in clearance fit with the conical surface of the pull cylinder by 0.02-0.03 mm, and the clearance fit range of the pull ring fixing hole I and the pull ring I is 0.2-0.3 mm.
The milling head is placed in a functional milling head library, and the functional milling head library is provided with at least one milling head and is arranged on a workbench of a five-axis gantry machining center.
The five-axis bridge gantry machining center is divided into two areas, namely a machining area and a head changing area, by the partition wall, and the functional milling head library is arranged on the workbench of the head changing area.
And a pneumatic door is arranged in the middle of the partition wall. The pneumatic door switch can be controlled to realize that the ram of the bridge type five-axis gantry machining center moves between two areas.
Draw the claw to install in drawing the jar, draw claw outer pot head to have a claw lamella, and claw lamella outer end is provided with the locking inclined plane, is fixed with the installation gasket on the claw lamella outer wall, and the outer lane right side of installation gasket is pasted in the ladder inner bore department of drawing the jar, and the left side utilizes circlip to lock, the draw-in groove is cascaded, and the diameter of draw-in groove mouth is less than the draw-in groove bottom, and the ladder junction of draw-in groove is provided with the connection inclined plane, and the inclined plane cooperates with the locking inclined plane of claw lamella outer end.
The precision debugging and replacing of the milling head can be completed by the following method:
the first step is as follows: loosening a fixing screw of the vertical milling head and a fixing screw of the pull ring I, opening the ram above the vertical milling head in the head changing area, and aligning the pull cylinder on the C-axis spindle with the pull ring I and the pull ring II on the vertical milling head;
secondly, controlling an electromagnetic valve to feed oil to the first oil hole, tensioning the pull ring I and the pull ring II by a pull cylinder, fixing the vertical milling head on a ram at the moment, and moving the ram to take the vertical milling head out of a functional milling head library;
fixing a standard detection rod on the vertical milling head, rotating the C-axis main shaft, and aligning the coaxiality of the vertical milling head and the C-axis main shaft by using a dial indicator;
fourthly, injecting positioning glue through the glue injection hole, opening the ram into the functional head base after the positioning glue is solidified, controlling the electromagnetic valve to feed oil to the second oil hole, and loosening the pull cylinder, the first pull ring and the second pull ring at the moment; and locking the fixing screw of the vertical milling head and the pull ring I.
Through the steps, the accurate position of the first pull ring is determined. When the machine tool normally works, the vertical milling head is grabbed, namely the vertical milling head is ensured to be coaxial with the C-axis main shaft. In the same way, the pull ring position of the milling head with other functions is determined. Through the technical scheme, the accuracy of the milling heads with different functions after automatic grabbing is guaranteed.
Compared with the prior art, the invention has the advantages that:
the tensioning and the releasing of the pull cylinder and the pull ring are controlled through hydraulic pressure, so that the automatic grabbing and replacing of the functional milling head are realized; and through the different cooperation of the first pull ring and the second pull ring with the pull cylinder, the accurate position of the pull ring is determined by combining the different cooperation of the first pull ring and the second pull ring with the first pull ring fixing hole and the second pull ring fixing hole and the cooperation of the glue injection hole, and the coaxiality of the vertical milling head and the C-axis spindle is ensured.
Drawings
FIG. 1 is a schematic diagram of the present invention;
FIG. 2 is a schematic structural diagram of a mounting position of the functional milling head library;
FIG. 3 is a three-dimensional structure diagram of the milling head;
FIG. 4 is a schematic top view of the milling head;
FIG. 5 is a schematic view of the milling head after installation;
FIG. 6 is an enlarged schematic view of the structure at A in FIG. 5;
in the figure: 1. bridge type five-axis gantry machining center, 2, milling head, 3, functional milling head library, 4, partition wall, 5, workbench, 6, pull ring I, 7, pull ring II, 8, pull ring fixing holes I and 9, pull ring fixing holes II and 10, glue injection hole, 11, pulling claw, 12, pulling cylinder, 13, ram, 14, C shaft spindle, 15, elastic retainer ring, 16, mounting gasket, 17, claw flap, 18, gasket, 19 and clamping groove.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
The automatic head changing mechanism of the bridge type five-axis gantry machining center shown in fig. 1 to 6 comprises a milling head 2, a C-axis main shaft 14 arranged in a ram 13 of the bridge type five-axis gantry machining center 1, a pulling cylinder 12, a pulling claw 11, two pulling rings I6 and two pulling rings II 7, wherein the pulling cylinder 12 is installed at the end part of the C-axis main shaft 14, the outer end of an inner hole of the pulling cylinder 12 is provided with a conical surface, the milling head 2 is provided with pulling ring fixing holes I8 and pulling ring fixing holes II 9 for respectively installing the pulling rings I6 and the pulling rings II 7, the peripheries of the pulling rings I6 and the pulling rings II 7 are provided with a conical surface, the pulling rings I6 and the pulling rings II 7 are internally provided with clamping grooves 19 matched with the pulling claws 11 to realize tensioning and loosening, the conical surfaces of the pulling rings II 7 are in clearance fit with the conical surface of the pulling cylinder 12, the pulling ring fixing holes II 9 are in transition fit with the pulling rings II 7, the conical surface of the pulling rings I6 is in transition fit with the pulling cylinder 12, the pulling ring fixing holes I8 are in clearance fit with the pulling rings, and the side edges of the pulling ring fixing holes 10 for injecting glue.
A gasket 18 is arranged between the pulling cylinder 12 and the C-axis main shaft 14, and the pulling cylinder 12 is installed on the C-axis main shaft 14 through a screw.
The first pull ring 6 and the second pull ring 7 are installed on the milling head 2 through screws. The screw for installing the pull ring one 6 can be a bidirectional screw.
The conical surface of the pull ring II 7 is in clearance fit with the conical surface of the pull cylinder 12 by 0.02-0.03 mm, and the clearance fit range of the pull ring fixing hole I8 and the pull ring I6 is 0.2-0.3 mm.
The milling head 2 is placed in the functional milling head library 3, and at least one functional milling head library 3 is arranged on a workbench 5 of the bridge type five-axis gantry machining center 1.
The machining center is characterized in that a partition wall 4 is installed on the workbench 5, the bridge type five-axis gantry machining center 1 is divided into two areas, namely a machining area and a head changing area, by the partition wall 4, and the functional milling head library 3 is arranged on the workbench 5 of the head changing area.
And a pneumatic door is arranged in the middle of the partition wall 4.
Draw claw 11 to install and draw in jar 12, draw 11 outer pot head of claw to have claw lamella 17, claw lamella 17 outer end is provided with the locking inclined plane, is fixed with installation gasket 16 on the claw lamella 17 outer wall, and installation gasket 16's outer lane right side is pasted and is being drawn jar 12's ladder inner bore department, and the left side utilizes circlip 15 to lock, draw-in groove 19 is cascaded, and the diameter of draw-in groove 19 mouth is less than at the bottom of draw-in groove 19, and the ladder junction of draw-in groove 19 is provided with the connection inclined plane, and the inclined plane cooperates with the locking inclined plane of claw lamella 17 outer end.
The pull cylinder 12 is provided with a first cavity and a second cavity, a cylinder body of the pull cylinder 12 is provided with a first oil hole and a second oil hole which are respectively communicated with the first cavity and the second cavity, the C-axis main shaft 14 is provided with at least two internal oil holes, and the first oil hole and the second oil hole on the cylinder body of the pull cylinder 12 are respectively communicated with the internal oil holes of the C-axis main shaft 14. And the oil passage supply is controlled by a solenoid valve.
The cylinder body of the cylinder pulling 12 is located around the first oil hole and the second oil hole and is in sealing connection with the C-axis main shaft 14 through a sealing ring.
The bridge type five-axis gantry machining center 1 can realize vertical cutting through the grabbed vertical milling head, also can grab a right-angle milling head to realize horizontal cutting, and grab a fork type milling head to realize five-axis linkage machining. The milling head 2 as in fig. 1 is a vertical milling head.
The method for replacing the vertical milling head of the milling head with the precision debugging comprises the following steps:
the first step is as follows: loosening a fixing screw of the vertical milling head and a fixing screw of the pull ring I6 (at the moment, a screw on the pull ring II 7 is locked), opening the ram 13 above the vertical milling head in the head changing area, and aligning the pull cylinder 12 on the C-axis spindle 14 with the pull ring I6 and the pull ring II 7 on the vertical milling head;
secondly, controlling an electromagnetic valve to feed oil to the first oil hole, tensioning the pull ring I6 and the pull ring II 7 by the pull cylinder 12, fixing the vertical milling head on a ram 13 at the moment, and moving the ram 13 to take the vertical milling head out of the functional milling head library 3;
thirdly, fixing a standard detection rod on the vertical milling head, rotating the C-axis main shaft 14, and aligning the coaxiality of the vertical milling head 2 and the C-axis main shaft 14 by using a dial indicator;
fourthly, injecting positioning glue through the glue injection hole 10, opening the ram 13 into the functional head library 3 after the positioning glue is solidified, controlling the electromagnetic valve to feed oil to the second oil hole, and loosening the pull cylinder 12 with the pull ring I6 and the pull ring II 7 at the moment; and locking the fixing screw of the vertical milling head and the pull ring I6.
Through the above steps, the precise position of the tab one 6 is determined. When the machine tool normally works, the vertical milling head is grabbed, namely the coaxiality of the vertical milling head and the C-axis main shaft 14 is ensured. In the same way, the pull ring one 6 position of the milling head with other functions is determined. Through the technical scheme, the accuracy of the milling heads with different functions after automatic grabbing is guaranteed.
Claims (6)
1. The utility model provides a five longmen machining center's of bridge type automation mechanism of trading head which characterized in that: the five-axis gantry milling machine comprises a milling head (2), a C-axis main shaft (14) arranged in a ram (13) of a bridge type five-axis gantry machining center (1) in a built-in mode, a pulling cylinder (12), a pulling claw (11), two pulling rings I (6) and two pulling rings II (7), wherein the pulling cylinder (12) is installed at the end part of the C-axis main shaft (14), the outer end of an inner hole of the pulling cylinder (12) is provided with a conical surface, the milling head (2) is provided with a pulling ring fixing hole I (8) and a pulling ring fixing hole II (9) which are respectively provided with the pulling rings I (6) and the pulling rings II (7), the peripheries of the pulling rings I (6) and the pulling ring II (7) are provided with a conical surface, the milling head I (6) and the pulling claw (11) are matched to realize tensioning and loosening, the conical surface of the pulling ring II (7) is in clearance fit with the conical surface of the pulling cylinder (12), the pulling ring fixing hole II (9) is in transition fit with the pulling ring II (7), the conical surface of the pulling ring I (6) and the pulling ring fixing hole (8) are provided with a glue hole (10); a gasket (18) is arranged between the pulling cylinder (12) and the C-axis main shaft (14), and the pulling cylinder (12) is installed on the C-axis main shaft (14) through a screw; the first pull ring (6) and the second pull ring (7) are installed on the milling head (2) through screws.
2. The automatic head-changing mechanism of the bridge type five-axis gantry machining center according to claim 1, characterized in that: the conical surface of the pull ring II (7) is in clearance fit with the conical surface of the pull cylinder (12) by 0.02-0.03 mm, and the clearance fit range of the pull ring fixing hole I (8) and the pull ring I (6) is 0.2-0.3 mm.
3. The automatic head-changing mechanism of the bridge type five-axis gantry machining center according to claim 1 or 2, characterized in that: the milling head (2) is placed in the functional milling head library (3), and at least one milling head is arranged in the functional milling head library (3) and is arranged on a workbench (5) of the bridge type five-axis gantry machining center (1).
4. The automatic head-changing mechanism of the bridge type five-axis gantry machining center according to claim 3, characterized in that: the bridge type five-axis gantry machining center is characterized in that a partition wall (4) is mounted on the workbench (5), the bridge type five-axis gantry machining center (1) is divided into two areas, namely a machining area and a head changing area, by the partition wall (4), and the functional milling head library (3) is arranged on the workbench (5) of the head changing area.
5. The automatic head-changing mechanism of the bridge type five-axis gantry machining center according to claim 4, characterized in that: and a pneumatic door is arranged in the middle of the partition wall (4).
6. The automatic head-changing mechanism of the bridge type five-axis gantry machining center according to claim 3, characterized in that: draw claw (11) to install in drawing jar (12), draw claw (11) outer pot head to have claw lamella (17), claw lamella (17) outer end is provided with the locking inclined plane, is fixed with installation gasket (16) on claw lamella (17) outer wall, and the outer lane right side of installation gasket (16) is pasted in the ladder inner bore department of drawing jar (12), and the left side utilizes circlip (15) to lock, draw-in groove (19) are cascaded, and the diameter of draw-in groove (19) mouth is less than at the bottom of draw-in groove (19), and the ladder junction of draw-in groove (19) is provided with the connection inclined plane, and the inclined plane cooperates with the locking inclined plane of claw lamella (17) outer end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710382634.1A CN107116388B (en) | 2017-05-26 | 2017-05-26 | Automatic head changing mechanism of bridge type five-axis gantry machining center |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710382634.1A CN107116388B (en) | 2017-05-26 | 2017-05-26 | Automatic head changing mechanism of bridge type five-axis gantry machining center |
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| CN107116388A CN107116388A (en) | 2017-09-01 |
| CN107116388B true CN107116388B (en) | 2023-03-21 |
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| CN201710382634.1A Active CN107116388B (en) | 2017-05-26 | 2017-05-26 | Automatic head changing mechanism of bridge type five-axis gantry machining center |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102007062610A1 (en) * | 2007-12-22 | 2009-06-25 | Sandvik Intellectual Property Ab | adhesive bond |
| CN201807800U (en) * | 2010-10-13 | 2011-04-27 | 天津市精诚机床制造有限公司 | Digital inner and outer tooth sensing automatic tooth aligning and positioning device |
| CN202317041U (en) * | 2011-11-08 | 2012-07-11 | 武汉国威重型机械制造有限公司 | Combined boring shaft for pouring and positioning |
| CN104191024A (en) * | 2014-08-20 | 2014-12-10 | 江苏新瑞重工科技有限公司 | Right-angled milling head device |
| CN105171131A (en) * | 2015-08-15 | 2015-12-23 | 宇环数控机床股份有限公司 | Rotary ultrasonic machining device based on non-contact energy transfer |
| CN205765153U (en) * | 2016-06-27 | 2016-12-07 | 云南巨峰精密机械制造有限公司 | Mouth seat positioner is floated in a kind of rip cutting formula turnning and milling complex centre |
| CN106378481B (en) * | 2016-12-08 | 2018-06-01 | 沈机集团昆明机床股份有限公司 | For the milling head and numerically-controlled machine tool of numerically-controlled machine tool |
| CN206780003U (en) * | 2017-05-26 | 2017-12-22 | 山东永华机械有限公司 | The achieving automatic head replacement mechanism of the axle gantry machining center of bridge-type five |
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Effective date of registration: 20230301 Address after: 272100 Xiaomeng Town Industrial Park, Yanzhou District, Jining City, Shandong Province Applicant after: SHANDONG DIDE PRECISION MACHINE TOOL CO.,LTD. Address before: 272100 Shandong Jining Yanzhou Yanzhou Economic Development Zone Yongan Road North Applicant before: SHANDONG YONGHUA MACHINERY Co.,Ltd. |
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