CN113751551A - Bending equipment - Google Patents
Bending equipment Download PDFInfo
- Publication number
- CN113751551A CN113751551A CN202111101903.5A CN202111101903A CN113751551A CN 113751551 A CN113751551 A CN 113751551A CN 202111101903 A CN202111101903 A CN 202111101903A CN 113751551 A CN113751551 A CN 113751551A
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- Prior art keywords
- nut
- lead screw
- fixedly connected
- seat
- positioning shaft
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- Pending
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- 238000005452 bending Methods 0.000 title claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Images
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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
-
- 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
- B21D55/00—Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/18—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a bending device, which relates to the technical field of numerical control machines and comprises: a frame; the transmission device comprises a lead screw, a nut and a nut seat, the nut is matched and connected with the lead screw, and the nut seat is fixedly connected with the nut; the output end of the driving device is fixedly connected with the lead screw; the movable seat is abutted against the nut seat and is provided with a through hole vertical to the axis of the lead screw; the positioning shaft is arranged in the through hole, one end of the positioning shaft is fixedly connected with the nut seat, and the positioning shaft is movably connected with the movable seat; the cutter component is fixedly connected with the movable seat; and the cutter assembly slides on the rack through the sliding block mechanism. When the cutter assembly is deflected due to unbalanced stress, the movable seat can rotate relative to the nut seat due to the movable connection between the positioning shaft and the movable seat, so that the deflection degree of the nut seat and the nut relative to the screw rod is effectively reduced, the abrasion of the screw rod due to deflection is reduced, the effect of protecting the screw rod is achieved, and the service life of the screw rod is prolonged.
Description
Technical Field
The invention relates to the technical field of numerical control machines, in particular to bending equipment.
Background
In the related art, a bending center, a flanging center and a flanging numerical control bending machine (hereinafter, referred to as bending equipment collectively) are numerical control metal plate bending equipment.
An upper pressing block shaft Z1/Z2 servo motor of the bending equipment converts rotary motion into linear motion through a screw-nut pair structure to drive an upper sliding block mechanism to move up and down, when a feeding mechanism sends a sheet metal workpiece to a specified bending position, the Z1/Z2 servo motor drives the upper sliding block mechanism to press the sheet metal workpiece downwards to be fixed, and then a front bending shaft X1/X2 and a lower bending shaft Y1/Y2 of a movable tool apron device are in linkage control to drive a bending tool to complete workpiece bending.
Taking the Y1 axis and the Y2 axis as examples, the servo motors of the Y1 axis and the Y2 axis are independently controlled by a control system, run synchronously, are connected with the movable tool apron through a lead screw, a lead screw nut and a lead screw nut seat respectively, and drive the movable tool apron to move up and down. Due to the control or mechanical precision problem, synchronization errors are easily generated between the Y1 shaft and the Y2 shaft, and further, the left position and the right position of the movable tool apron are subjected to synchronous deviation, so that the linear guide rail bears the offset load force. Because the output forces of the Y1 shaft and the Y2 shaft reach the level of more than ten tons, the synchronous deviation of the left position and the right position of the movable cutter holder can cause the deflection of the screw nut seat of the screw to further cause the bending of the screw, and the damage to the screw is caused for a long time. In practical application, when the movable tool apron slightly deflects, abnormal noise is obviously generated when the Y1 shaft and the Y2 shaft run, the output torque value fed back to the numerical control system by the servo drive of the Y1 shaft or the Y2 shaft is far beyond a normal value, and the lead screw is scrapped after long-time unbalanced load use.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a bending device which can effectively overcome the influence of unbalance loading on a lead screw so as to prolong the service life of the lead screw.
The bending equipment of the embodiment of the invention comprises: a frame; the transmission device comprises a lead screw, a nut and a nut seat, wherein the nut is matched and connected with the lead screw, and the nut seat is fixedly connected with the nut; the output end of the driving device is fixedly connected with the lead screw; the movable seat is abutted against the nut seat and is provided with a through hole vertical to the axis of the lead screw; the positioning shaft is arranged in the through hole, one end of the positioning shaft is fixedly connected with the nut seat, and the positioning shaft is movably connected with the movable seat; the cutter assembly is fixedly connected with the movable seat; and the cutter assembly slides in the rack through the sliding block mechanism.
According to some embodiments of the invention, the nut seat has a mounting groove matching the positioning shaft, the positioning shaft being partially mounted to the mounting groove.
According to some embodiments of the invention, the mounting groove is internally provided with a mounting hole, the positioning shaft is provided with a fixing hole, and a fastener penetrates through the mounting hole and the fixing hole.
According to some embodiments of the invention, the fixing hole is a counter-bore and the fastener is a cap screw.
According to some embodiments of the invention, the nut has a locking portion extending in a radial direction, the nut seat comprises a fixing portion abutting an outer wall of the nut, and the locking portion is fixedly connected to one end of the fixing portion.
According to some embodiments of the invention, two of the driving device and the transmission device are provided, and the two transmission devices are spaced apart.
According to some embodiments of the invention, the drive device comprises a servo motor for driving the lead screw in rotation.
According to some embodiments of the invention, the driving device further comprises a speed reducer, the output end of the servo motor is connected with the speed reducer, and the lead screw is fixedly connected with the output end of the speed reducer.
According to some embodiments of the invention, the tool assembly comprises a first tool and a second tool, the first tool and the second tool being oppositely disposed.
According to some embodiments of the present invention, the number of the slider mechanisms is at least two, the two slider mechanisms are arranged at intervals, the slider mechanism includes a slide rail and a slider, the slider is fixedly connected to the tool assembly, the guide rail is fixedly connected to the frame, and the slider is slidably connected to the slide rail.
The bending equipment provided by the embodiment of the invention at least has the following beneficial effects: the driving device is used for driving the lead screw to rotate, and the lead screw nut pair and the movable seat are used for driving the cutter assembly to slide along the sliding block mechanism. When the cutter assembly is stressed in an unbalanced manner and deflects, the movable base can rotate relative to the nut base due to the movable connection between the positioning shaft and the movable base, so that the deflection degree of the nut base and the nut relative to the screw rod is effectively reduced, the abrasion of the screw rod caused by deflection is reduced, the effect of protecting the screw rod is achieved, and the service life of the screw rod is effectively prolonged.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
fig. 1 is a schematic partial structural view of a bending apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;
FIG. 3 is a schematic cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic structural diagram of a bending apparatus according to an embodiment of the present invention;
fig. 5 is a left side view of fig. 4.
Reference numerals:
the cutting tool comprises a screw 111, a nut 112, a locking part 1121, a servo motor 121, a speed reducer 122, a tool assembly 13, a first tool 131, a second tool 132, a nut seat 113, a fixing part 1131, a slide rail 141, a slider 142, a movable seat 15, a through hole 151, a positioning shaft 16, a fixing hole 161 and a rack 17.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1 to 5, the bending apparatus according to the embodiment of the present invention includes a frame 17, a transmission device, a driving device, a movable base 15, a positioning shaft 16, a cutter assembly 13, and a slider mechanism.
Specifically, the transmission device comprises a screw 111, a nut 112 and a nut seat 113, the nut 112 is connected with the screw 111 in a matching way, and the nut seat 113 is fixedly connected with the nut 112; the output end of the driving device is fixedly connected with the lead screw 111 so as to drive the lead screw 111 to rotate; the movable seat 15 is abutted against the nut seat 113, and the movable seat 15 is provided with a through hole 151 vertical to the axis of the lead screw 111; the positioning shaft 16 is arranged in the through hole 151, one end of the positioning shaft 16 is fixedly connected with the nut seat 113, and the positioning shaft 16 is movably connected with the movable seat 15; the cutter assembly 13 is fixedly connected with the movable seat 15, and the cutter assembly 13 slides on the frame 17 through a sliding block mechanism.
The driving device drives the lead screw 111 to rotate, and the lead screw 111 drives the cutter assembly 13 to slide along the slider mechanism through the lead screw nut pair so as to perform bending work. When the cutter assembly 13 is unbalanced in stress to cause deflection, that is, two ends of the cutter assembly 13 cannot be kept at the same horizontal plane, the positioning shaft 16 is movably connected with the movable seat 15, so that the movable seat 15 can rotate relative to the nut seat 113, the deflection degree of the nut seat 113 and the nut 112 relative to the screw 111 is effectively reduced, the abrasion of the screw 111 caused by the deflection is reduced, and the effect of protecting the screw 111 is achieved.
In the embodiment of the present invention, referring to fig. 1 and 2, the slider mechanism includes a slide rail 141 and a slider 142, the slider 142 is fixedly connected to the tool assembly 13, the guide rail is fixedly connected to the frame 17, and the slider 142 is slidably connected to the slide rail 141. The slide rail 141 is a linear guide rail, the slide rail 141 is disposed along a vertical direction, and the slide rail 141 serves as a motion guide for the movable base 15 and the tool assembly 13. In addition, the sliding block mechanism also provides a horizontal supporting force for the movable seat 15 and the cutter assembly 13, so that the situation that the movable seat 15 and the cutter assembly overturn is avoided.
In the embodiment of the invention, two driving devices and two transmission devices are arranged, and the two transmission devices are arranged at intervals. The lead screws 111 of the two transmission devices are parallel to the extending direction of the slide rail 141 respectively. Two driving devices and a transmission device are arranged to drive the cutter assembly 13 to slide along the slide rail 141, so that the load capacity and the bending power of the bending equipment can be improved, and the bending work requirement can be met. It is understood that the number of mobile seats 15 corresponds to the number of transmission means.
In the above embodiment, the two driving devices are respectively controlled by independent control systems, and the two independent control systems control the driving devices to operate to drive the lead screw 111 to rotate, so that the movable base 15 and the tool assembly 13 slide along the slide rail 141 under the action of the lead screw nut pair.
In the conventional bending apparatus, due to the synchronization error of the two transmission devices caused by the control or mechanical precision problem, the two movable seats 15 may generate synchronization deviation, resulting in the slide rail 141 bearing the unbalanced load. Since the total output force of the two transmission devices reaches over ten tons, the synchronous deviation between the two movable seats 15 can cause the nut seat 113 to generate deflection relative to the lead screw 111, which easily causes the lead screw 111 to bend, and even causes the lead screw 111 to be damaged.
In the embodiment, referring to fig. 3, since the positioning shaft 16 is movably connected to the nut seat 113, that is, the movable seat 15 is hinged to the nut seat 113 through the positioning shaft 16, the movable seat 15 can rotate around the positioning shaft 16 when subjected to an offset load force, and the offset degree of the nut seat 113, the nut 112 and the lead screw 111 is effectively reduced, so that the wear of the lead screw 111 caused by the offset is reduced, and the lead screw 111 is well protected. By utilizing the movable connection of the positioning shaft 16 and the lead screw 111, the unbalance loading degree of the lead screw 111 is reduced, and the problem that the lead screw 111 is damaged due to double-shaft control synchronization errors in the conventional bending equipment is solved.
In one embodiment of the present invention, the driving device includes a servo motor 121, and the servo motor 121 is used for driving the lead screw 111 to rotate. Servo motor 121 carries out position control through pulse or servo bus, and the turned angle that can accurate control motor is favorable to reducing the synchronous error between two transmission to can reduce the beat degree of lead screw 111, with the wearing and tearing that reduce lead screw 111, prolong lead screw 111's life.
In the above embodiment, the driving device further includes a speed reducer 122, an output end of the servo motor 121 is connected to the speed reducer 122, and the lead screw 111 is fixedly connected to an output end of the speed reducer 122. A speed reducer 122 is arranged between the servo motor 121 and the lead screw 111, so that the bending equipment can output larger torque to meet the requirement of bending work on large output force.
In one embodiment of the present invention, the cutter assembly 13 includes a first cutter 131 and a second cutter 132, and the first cutter 131 and the second cutter 132 are oppositely disposed. The first cutter 131 and the second cutter 132 are disposed on the same vertical plane, and the first cutter 131 is disposed above the second cutter 132. When bending is performed, the servo motor 121 is controlled to drive the screw 111 to rotate, so as to drive the first cutter 131 and the second cutter 132 to move along the extending direction of the slide rail 141, and thus, the workpiece is bent.
In an embodiment of the present invention, there are at least two slider mechanisms, the two slider mechanisms are arranged at intervals, the slider mechanism includes a slide rail 141 and a slider 142, the slider 142 is fixedly connected to the tool assembly 13, the guide rail is fixedly connected to the frame 17, and the slider 142 is slidably connected to the slide rail 141. The sliding track of the cutter assembly 13 can be more accurately limited by the plurality of sliding block mechanisms, so that the condition that the lead screw 111 deflects due to the synchronous error of the two driving devices is effectively avoided. It will be appreciated that the plurality of slider mechanisms can increase the stiffness of the cutter assembly 13 due to the greater transverse width of the cutter assembly 13 to control the straightness of the cutter assembly 13 and improve the quality of the bent workpiece.
In one embodiment of the invention, the nut seat 113 has a mounting groove that mates with the positioning shaft 16, and the positioning shaft 16 is partially mounted in the mounting groove. The output force of the screw-nut pair is mainly transmitted to the movable seat 15 through the positioning shaft 16 to drive the movable seat 15 and the cutter assembly 13 to move. There is no mechanical locking structure between the nut seat 113 and the movable seat 15, but the connection between the nut seat 113 and the movable seat 15 and the transmission of force are realized through the positioning shaft 16. A mounting groove is provided in the nut seat 113 so that part of the positioning shaft 16 can be mounted in the mounting groove. Along the radial direction of location axle 16, the mounting groove plays the fixed action to the side of location axle 16, carries out the transmission of the power between nut seat 113 and movable seat 15 through location axle 16, can effectively avoid the fixed connection failure between location axle 16 and the nut seat 113 to the ability of location axle 16 transmission output power has been improved.
In one embodiment of the present invention, a mounting hole is disposed in the mounting groove, a fixing hole 161 is disposed in the positioning shaft 16, and a fastener is disposed between the mounting hole and the fixing hole 161. In this embodiment, the fixing hole 161 is a countersunk hole, and the fastening member is a cap screw.
In an embodiment of the present invention, the nut 112 has a locking portion 1121 extending in a radial direction, the nut seat 113 includes a fixing portion 1131, the fixing portion 1131 abuts against an outer wall of the nut 112, and the locking portion 1121 is fixedly connected to one end of the fixing portion 1131 to realize the fixed connection between the nut seat 113 and the nut 112.
In this embodiment, the locking portion 1121 is provided with a plurality of locking holes, and the fixing portion 1131 is provided with a plurality of locking screws matching with the locking holes, and the locking screws are connected with the locking holes in a matching manner to fix the nut 112 and the nut seat 113.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. A bending apparatus, comprising:
a frame;
the transmission device comprises a lead screw, a nut and a nut seat, wherein the nut is matched and connected with the lead screw, and the nut seat is fixedly connected with the nut;
the output end of the driving device is fixedly connected with the lead screw;
the movable seat is abutted against the nut seat and is provided with a through hole vertical to the axis of the lead screw;
the positioning shaft is arranged in the through hole, one end of the positioning shaft is fixedly connected with the nut seat, and the positioning shaft is movably connected with the movable seat;
the cutter assembly is fixedly connected with the movable seat;
and the cutter assembly slides in the rack through the sliding block mechanism.
2. The bending apparatus according to claim 1, wherein the nut socket has a mounting slot that mates with the positioning shaft, the positioning shaft being partially mounted to the mounting slot.
3. The bending apparatus according to claim 2, wherein a mounting hole is provided in the mounting groove, a fixing hole is provided in the positioning shaft, and a fastener is provided in the mounting hole and the fixing hole.
4. The bending apparatus according to claim 3, wherein the fixing hole is a countersunk hole and the fastener is a cap screw.
5. The bending apparatus according to claim 1, wherein the nut has a locking portion extending in a radial direction, the nut holder includes a fixing portion abutting against an outer wall of the nut, and the locking portion is fixedly connected to one end of the fixing portion.
6. The bending apparatus according to claim 1, wherein there are two of the driving devices and two of the transmission devices, and the two transmission devices are spaced apart from each other.
7. The bending apparatus according to claim 6, wherein the drive device comprises a servo motor for driving the lead screw to rotate.
8. The bending apparatus according to claim 7, wherein the driving device further comprises a speed reducer, an output end of the servo motor is connected with the speed reducer, and the lead screw is fixedly connected with an output end of the speed reducer.
9. The bending apparatus according to claim 1, wherein the knife assembly includes a first knife and a second knife, the first knife and the second knife being disposed in opposition.
10. The bending apparatus according to claim 1, wherein the number of the slider mechanisms is at least two, the two slider mechanisms are arranged at intervals, the slider mechanisms include a slide rail and a slider, the slider is fixedly connected with the tool assembly, the guide rail is fixedly connected with the frame, and the slider is slidably connected with the slide rail.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111101903.5A CN113751551A (en) | 2021-09-18 | 2021-09-18 | Bending equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111101903.5A CN113751551A (en) | 2021-09-18 | 2021-09-18 | Bending equipment |
Publications (1)
Publication Number | Publication Date |
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CN113751551A true CN113751551A (en) | 2021-12-07 |
Family
ID=78796510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202111101903.5A Pending CN113751551A (en) | 2021-09-18 | 2021-09-18 | Bending equipment |
Country Status (1)
Country | Link |
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CN (1) | CN113751551A (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102218665A (en) * | 2011-05-04 | 2011-10-19 | 清华大学 | Lead screw feeding platform with loading assistant support |
CN207316407U (en) * | 2017-10-20 | 2018-05-04 | 武汉联航机电有限公司 | A kind of lead screw guide rails relocation mechanism |
CN209149666U (en) * | 2018-06-29 | 2019-07-23 | 西安铂力特增材技术股份有限公司 | Screw-nut floating assembly structure |
CN110860583A (en) * | 2019-10-16 | 2020-03-06 | 佛山市根号科技有限公司 | Multilateral bender |
CN216027268U (en) * | 2021-09-18 | 2022-03-15 | 广州纽蓝客智能科技有限公司 | Bending equipment |
-
2021
- 2021-09-18 CN CN202111101903.5A patent/CN113751551A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102218665A (en) * | 2011-05-04 | 2011-10-19 | 清华大学 | Lead screw feeding platform with loading assistant support |
CN207316407U (en) * | 2017-10-20 | 2018-05-04 | 武汉联航机电有限公司 | A kind of lead screw guide rails relocation mechanism |
CN209149666U (en) * | 2018-06-29 | 2019-07-23 | 西安铂力特增材技术股份有限公司 | Screw-nut floating assembly structure |
CN110860583A (en) * | 2019-10-16 | 2020-03-06 | 佛山市根号科技有限公司 | Multilateral bender |
CN216027268U (en) * | 2021-09-18 | 2022-03-15 | 广州纽蓝客智能科技有限公司 | Bending equipment |
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