CN115179057A - Balanced type Z is to structure - Google Patents
Balanced type Z is to structure Download PDFInfo
- Publication number
- CN115179057A CN115179057A CN202211022670.4A CN202211022670A CN115179057A CN 115179057 A CN115179057 A CN 115179057A CN 202211022670 A CN202211022670 A CN 202211022670A CN 115179057 A CN115179057 A CN 115179057A
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- CN
- China
- Prior art keywords
- cross beam
- sliding table
- lead screw
- balanced
- sliding
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 description 10
- 238000003754 machining Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0252—Steering means
-
- 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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
- B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
Abstract
A balanced Z-direction structure is arranged on a cross beam (1), and is characterized in that a sliding table (2) with a frame structure is arranged on the cross beam (1); the sliding table (2) is provided with a sliding table sliding block (3), and a matched sliding rail is arranged at the corresponding position of the cross beam (1); one of the two sides of the sliding table (2) is provided with a screw nut (4), and the other side or the two sides are provided with a lifting slide block (5); the lifting slide block (5) is arranged on a lifting guide rail (10), and the lifting guide rail (10) is fixedly arranged on the Z-direction box body (9); the lower part of the Z-direction box body (9) is provided with a working part (17). According to the invention, the single-side stress of the cross beam is changed into the double-side stress, so that the cutting force applied to the cross beam in the working process and the distortion caused by the self weight of the Z-direction device can be greatly reduced, the processing precision can be improved, and the manufacturing cost of the cross beam can be reduced.
Description
Technical Field
The invention relates to a mechanical structure, in particular to a mounting structure of a machining tool of gantry structure equipment, in particular to a balanced type Z-direction structure which can be widely applied to numerical control machines, machining centers, gantry type mechanical equipment, large-scale water cutting equipment and the like.
Background
At present, a numerical control machine tool and a machining center Z-direction device are generally installed on one side (front side or rear side) of a cross beam, as shown in fig. 1, due to the superposition of the self gravity of the cross beam and the gravity of the single-side Z-direction device, the cross beam of the machine tool is subjected to a single-side superposition force to generate a twisting force, and the Z-direction device is required to perform a cutting motion up and down in the work of the machine tool, so that the twisting deformation of the cross beam is continuously changed due to the change generated by the superposition of the gravity and the cutting force, the deformation caused by the unbalance phenomenon caused by the Z-direction gravity can deteriorate the machining precision and the working effect of the machine tool, and the cross beam can be damaged to reduce the precision and the service life of the machine tool.
Since the weight of the Z-axis device is generally between 200kg and 2000kg, and the stroke is generally between 80 mm and 1500mm, even if the cross beam generates 1 micron torsional deformation, millimeter-scale deformation can be generated at the position of the cutter when the cross beam is enlarged, so in order to eliminate the deformation, the most common method is to increase the size and rigidity of the cross beam, which causes the increase of the manufacturing cost and volume of the equipment, and no good solution exists for the problem.
Disclosure of Invention
The invention aims to design a balanced type Z-direction structure aiming at the problem that the machining precision of a power head is finally influenced because a beam is easily distorted and deformed due to unbalanced gravity of a Z-direction power device arranged on the conventional beam structure.
The technical scheme of the invention is as follows:
a balanced Z-direction structure is arranged on a cross beam 1 and is characterized in that a sliding table 2 with a frame structure is arranged on the cross beam 1; the sliding table 2 is provided with at least two adjacent sliding table sliding blocks 3 on the inner surfaces, and the corresponding position of the cross beam 1 is provided with a matched sliding rail; one of the two sides of the sliding table 2 is provided with a screw nut 4, and the other side or two sides of the sliding table are provided with a lifting slide block 5; a screw 6 is arranged in the screw nut 4, one end of the screw 6 is connected with a driving motor 7, the other end of the screw 6 is arranged in a bearing 8, and the driving motor 7 and the bearing 8 are both fixedly arranged on a Z-direction box body 9; the lifting slide block 5 is arranged on a lifting guide rail 10, and the lifting guide rail 10 is fixedly arranged on the Z-direction box body 9; the lower part of the Z-direction box body 9 is provided with a working part 17, the working part can be arranged at a torque balance point without adding a counterweight 18, otherwise, in order to improve the balance point and improve the processing precision, the counterweight 18 is preferably added in consideration of the action of load.
And a sensor 11 is arranged on one surface of the Z-direction box body 9 opposite to the lead screw 6 so as to control the moving distance of the lead screw.
The sensor 11 is a limit switch, a proximity switch, a photoelectric switch or a magnetic switch.
The driving mechanism of the sliding table 2 is a guide rail sliding block, a gear rack, a lead screw pair and a roller linear rail transmission mechanism, so that the X-direction sliding table 2 moves on the cross beam 1 along the X direction.
The driving motor 7 is a servo motor, a speed reducing motor, a stepping motor, a variable frequency motor or a pneumatic motor; the output shaft of the driving motor is directly or indirectly connected with the upper end of the screw rod.
The invention has the beneficial effects that:
according to the invention, the single-side stress of the cross beam is changed into the bilateral symmetrical stress, so that the distortion caused by the self weight of the Z-direction device and the cutting force applied to the cross beam in the working process is eliminated, the processing precision is improved, and the cost of the cross beam due to the increase of the rigidity is reduced.
The invention has simple structure and is easy to realize.
The Z-axis device is in a state of balance as much as possible on the cross beam through structural design; the transmission mechanisms are arranged on the front side and the rear side of the Z-direction device, the cross beam is wrapped in the middle, and the front side and the rear side of the cross beam are uniformly stressed when the Z-direction device moves up and down in the Z-axis direction, so that the stress is balanced, the precision of the machine tool is improved, and the service life of the machine tool is prolonged.
Drawings
Fig. 1 is a schematic structural view of a conventional Z-direction device mounted on a beam on one side.
Fig. 2 is a schematic view of the Z-balance structure of the present invention.
FIG. 3 is a schematic cross-sectional view of the invention taken along the Y-axis.
FIG. 4 is a schematic view of the cross-section of the present invention taken along the X-direction.
Fig. 5 is a schematic view of the Z-section of the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 2-5.
A balanced type Z-direction structure is arranged on a cross beam 1, generally speaking, the cross beam 1 can move in the Y direction under the drive of a Y-direction drive device, a sliding table 2 with a frame-shaped structure is arranged on the cross beam 1, as shown in figure 3, the sliding table 2 can move in the X direction of the cross beam 1 under the drive of a drive mechanism, as shown in figure 4, a lead screw 13 is driven by a drive motor 12 to rotate in figure 4, the lead screw 13 drives a lead screw nut 14 to move, and then a sliding block 15 is driven to move along a guide rail 16, and the sliding table 2 is arranged on the sliding block 15 and moves along the X direction along with the lead screw nut 14. At least two adjacent inner surfaces of the sliding tables 2 are provided with sliding table sliding blocks 3 (preferably, three surfaces are provided with corresponding sliding blocks to ensure the stress balance of the cross beam), and corresponding positions of the cross beam 1 are provided with matched sliding rails (the sliding tables and the linear sliding rails can also adopt dovetail structures); one of the two sides of the sliding table 2 is provided with a screw nut 4 (as shown in fig. 5), and the other side or two sides of the sliding table are provided with lifting slide blocks 5 (in fig. 5, the two sides of the sliding table are both provided with the lifting slide blocks 5); a lead screw 6 is arranged in the lead screw nut 4, one end of the lead screw 6 is connected with a driving motor 7, the other end of the lead screw is arranged in a bearing 8, and the driving motor 7 and the bearing 8 are both fixedly arranged on a Z-direction box body 9; the lifting slide block 5 is arranged on a lifting guide rail 10, and the lifting guide rail 10 is fixedly arranged on the Z-direction box body 9; the driving motor 9 drives the lead screw 6 to rotate, and the lead screw 6 drives the Z-direction box body 9 to move up and down along the lifting guide rail 10 under the constraint of the lifting slide block 5 because the lead screw nut 4 is fixed, so that the Z-direction box body 9 is lifted; the self-balancing of the Z-direction structure can be realized by installing the working part 17 at the torque balance point at the lower part of the Z-direction box 9, and as shown in fig. 2, the working part can be a machine tool, a water jet structure head, a welding gun and the like. In specific implementation, if the working part 17 can not be installed on the torque balance point at the lower part of the Z-direction box body 9 and can also be installed at any position, the balance problem can be fundamentally solved by matching with the corresponding counter weight 18. On the side of the Z-directed box 9 opposite the lead screw 6, a set of two sensors 11 is preferably mounted to control the lead screw travel distance. The sensor 11 is a limit switch, a proximity switch, a photoelectric switch or a magnetic switch. In addition, in specific implementation, the driving mechanism of the sliding table 2 is a guide rail slider, a gear rack, a lead screw pair and a roller linear rail transmission mechanism, so that the X-direction sliding table 2 moves on the cross beam 1 along the X direction. The driving motor 7 is a servo motor, a speed reducing motor, a stepping motor, a variable frequency motor or a pneumatic motor; the output shaft of the driving motor is directly or indirectly connected with the upper end of the screw rod.
The working principle of the invention is as follows: the gravity of the Z-direction structure (Z-direction box body 9, the same below) is uniformly distributed on two sides of the cross beam so that the gravity of the cross beam is balanced on two sides of the cross section of the cross beam, therefore, the cross beam is only subjected to vertical downward gravity in a static state, and the cross beam cannot be horizontally bent and deformed due to the unbalance of the Z-direction gravity. The main point of the invention is that the gravity of the Z-direction structure is equal in weight along the two sides of the cross beam, and the cross beam under the structure can not generate side change and deflection (generally, the Z-direction structure of the machine tool is asymmetric, so the Z-direction structure can cause the cross beam to generate compound deformation of downwarping and distortion).
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (7)
1. A balanced Z-direction structure is arranged on a cross beam (1), and is characterized in that a sliding table (2) with a frame structure is arranged on the cross beam (1); the sliding table (2) is provided with at least two sliding table sliding blocks (3) on the inner surfaces which are adjacent or opposite, and the corresponding position of the cross beam (1) is provided with a matched sliding rail; one of the two sides of the sliding table (2) is provided with a screw nut (4), and the other side or the two sides are provided with a lifting slide block (5); a lead screw (6) is arranged in the lead screw nut (4), one end of the lead screw (6) is connected with a driving motor (7), the other end of the lead screw is arranged in a bearing (8), and the driving motor (7) and the bearing (8) are both fixedly arranged on a Z-direction box body (9); the lifting slide block (5) is arranged on a lifting guide rail (10), and the lifting guide rail (10) is fixedly arranged on the Z-direction box body (9); the lower part of the Z-direction box body (9) is provided with a working part (17).
2. The balanced Z-direction structure according to claim 1, characterized in that a sensor (11) is installed on the surface of the Z-direction box (9) opposite to the lead screw (6) to control the moving distance of the lead screw.
3. The balanced Z-directed structure according to claim 1, characterized in that said sensor (11) is a limit switch, a proximity switch, a photoelectric switch or a magnetic switch.
4. The balanced type Z-direction structure as claimed in claim 1, wherein the driving mechanism of the sliding table (2) is a guide rail sliding block, a gear rack, a lead screw pair, a roller linear rail transmission mechanism, so that the X-direction sliding table (2) moves on the cross beam (1) along the X direction.
5. The balanced Z-direction structure according to claim 1, wherein said driving motor (7) is a servo motor, a reduction motor, a stepping motor, a variable frequency motor or a pneumatic motor; the output shaft of the driving motor is directly or indirectly connected with the upper end of the screw rod.
6. The balanced Z-direction structure according to claim 1, characterized in that the working part (17) is mounted at a torque balance point at the lower part of the Z-direction box (9).
7. The balanced Z-direction structure according to claim 1, wherein when the working portion (17) is mounted at a non-torque balance point at the lower portion of the Z-direction case (9), a counterweight (18) is mounted on one side thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211022670.4A CN115179057A (en) | 2022-08-25 | 2022-08-25 | Balanced type Z is to structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211022670.4A CN115179057A (en) | 2022-08-25 | 2022-08-25 | Balanced type Z is to structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115179057A true CN115179057A (en) | 2022-10-14 |
Family
ID=83523739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211022670.4A Pending CN115179057A (en) | 2022-08-25 | 2022-08-25 | Balanced type Z is to structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115179057A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090007406A1 (en) * | 2007-07-03 | 2009-01-08 | Hardinge, Inc. | Belt-driven indexing tool turret asembly |
| JP2012056007A (en) * | 2010-09-08 | 2012-03-22 | Shin Nippon Koki Co Ltd | Nc machine tool |
| JP2016168641A (en) * | 2015-03-12 | 2016-09-23 | パスカルエンジニアリング株式会社 | Rotary shaft balancer mechanism |
| CN107433458A (en) * | 2017-08-01 | 2017-12-05 | 温州奕叶电子有限公司 | A kind of vertical Longmen machine tool |
| CN111633438A (en) * | 2020-07-02 | 2020-09-08 | 意特利（滁州）智能数控科技有限公司 | Square ram frame structure and mounting method thereof |
| CN113212050A (en) * | 2021-05-13 | 2021-08-06 | 武汉南方旭域科技工程有限公司 | Side slope landscape engraving construction platform |
| CN113441763A (en) * | 2021-08-06 | 2021-09-28 | 齐齐哈尔二机床(集团)有限责任公司 | Overhead gantry machining tool |
| CN215144934U (en) * | 2021-07-08 | 2021-12-14 | 无锡东方欣宏环保科技有限公司 | Drilling device for anchor rod machining |
| CN215468330U (en) * | 2021-08-06 | 2022-01-11 | 齐齐哈尔二机床(集团)有限责任公司 | Overhead gantry machining tool |
-
2022
- 2022-08-25 CN CN202211022670.4A patent/CN115179057A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090007406A1 (en) * | 2007-07-03 | 2009-01-08 | Hardinge, Inc. | Belt-driven indexing tool turret asembly |
| JP2012056007A (en) * | 2010-09-08 | 2012-03-22 | Shin Nippon Koki Co Ltd | Nc machine tool |
| JP2016168641A (en) * | 2015-03-12 | 2016-09-23 | パスカルエンジニアリング株式会社 | Rotary shaft balancer mechanism |
| CN107433458A (en) * | 2017-08-01 | 2017-12-05 | 温州奕叶电子有限公司 | A kind of vertical Longmen machine tool |
| CN111633438A (en) * | 2020-07-02 | 2020-09-08 | 意特利（滁州）智能数控科技有限公司 | Square ram frame structure and mounting method thereof |
| CN113212050A (en) * | 2021-05-13 | 2021-08-06 | 武汉南方旭域科技工程有限公司 | Side slope landscape engraving construction platform |
| CN215144934U (en) * | 2021-07-08 | 2021-12-14 | 无锡东方欣宏环保科技有限公司 | Drilling device for anchor rod machining |
| CN113441763A (en) * | 2021-08-06 | 2021-09-28 | 齐齐哈尔二机床(集团)有限责任公司 | Overhead gantry machining tool |
| CN215468330U (en) * | 2021-08-06 | 2022-01-11 | 齐齐哈尔二机床(集团)有限责任公司 | Overhead gantry machining tool |
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