CN117862884A - A finishing equipment and processing technology for brake screw nut - Google Patents
A finishing equipment and processing technology for brake screw nut Download PDFInfo
- Publication number
- CN117862884A CN117862884A CN202410119705.9A CN202410119705A CN117862884A CN 117862884 A CN117862884 A CN 117862884A CN 202410119705 A CN202410119705 A CN 202410119705A CN 117862884 A CN117862884 A CN 117862884A
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- spindle
- internal thread
- screw nut
- grinding wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
本发明公开了一种刹车丝杆螺母的精加工设备，包括机床本体和可沿Z向移动的工件主轴，以及设置于机床本体上可沿X向移动的X向滑板，X向滑板上设有朝向工件主轴设置的内螺纹粗铣主轴和内螺纹精磨主轴，内螺纹粗铣主轴上安装有内螺纹铣刀，内螺纹精磨主轴上设有精磨砂轮。此刹车丝杆螺母的精加工设备及加工工艺针对螺纹滚道深度较深的丝杆螺母零件，实现了先粗加工再精磨削的工艺工序，因为精磨有专门挑选的砂轮和磨削参数，因此提高了加工精度，极大的提高了加工效率，减少了砂轮损耗，降低了成本；同时，因为丝杆螺母工件是在一台机床上面一次装夹完成粗精加工的全部流程，因此也提高了工件的加工精度，此发明用于机加工技术领域。
The present invention discloses a finishing equipment for brake screw nuts, comprising a machine tool body and a workpiece spindle movable in the Z direction, and an X-direction slide plate arranged on the machine tool body and movable in the X direction, the X-direction slide plate is provided with an internal thread rough milling spindle and an internal thread fine grinding spindle arranged toward the workpiece spindle, the internal thread rough milling spindle is installed with an internal thread milling cutter, and the internal thread fine grinding spindle is provided with a fine grinding wheel. This finishing equipment and processing technology for brake screw nuts realizes the process of rough machining first and then fine grinding for screw nut parts with a deep thread raceway depth, because fine grinding has specially selected grinding wheels and grinding parameters, thus improving the processing accuracy, greatly improving the processing efficiency, reducing the grinding wheel loss, and reducing the cost; at the same time, because the screw nut workpiece is clamped on a machine tool once to complete the entire process of rough and fine machining, the processing accuracy of the workpiece is also improved, and this invention is used in the field of machining technology.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a finish machining device and a finish machining process for a brake screw nut.
Background
The machine tool is a master for manufacturing various high-precision and high-efficiency machines, and is a key component along with the development of various high-grade motion machines (including IC equipment, feeding mechanisms of precise instruments, and the like) and high-grade numerical control machine tools towards high speed, high precision and high reliability.
With the development of new energy markets, the types of threaded parts such as automobile steering gears and brake screw rods and internal threaded parts such as nuts and modules are more and more, and the processes needing to be processed are more and more. The raceway of the screw rod needs to be subjected to heat treatment after rough machining, and a large allowance is reserved for the raceway during rough machining in order to prevent insufficient finishing allowance caused by heat treatment deformation. Most of external thread grinding machines existing in the market at present are single thread grinding main shafts for grinding threads of external thread parts, and related parameters and grinding parameters of grinding wheels required by rough grinding and fine grinding of the threads are different, so that the external thread grinding machine of a single grinding head has a certain compromise between rough grinding and fine grinding during grinding. Therefore, the development of an external thread processing machine tool with separate numerical control rough grinding and fine grinding is a desired urgent market demand.
Most of the existing machine tools on the market are single-function, the turning of the thread is carried out on the lathe for turning the thread, the thread grinding can only be carried out on a thread grinding machine, the same part is repeatedly assembled and disassembled, so that the coaxiality of the spiral line axis and the excircle axis of the thread is difficult to ensure, and the perpendicularity of the spiral line axis and the end face of the thread is also difficult to ensure.
The parts with deeper depths of the partial thread raceways are solely ground by the grinding wheel, so that the grinding efficiency is lower and the grinding wheel loss is larger. In order to solve the problem, most of the current market is to roughen the thread raceways before heat treatment, leave some margin, and grind the thread raceways with little margin after heat treatment. The method has the problems that the allowance of rough machining is larger due to heat treatment deformation, and the grinding total amount of the grinding wheel is larger during finish machining; in addition, since the same feature (thread) of the same part needs to be assembled and disassembled repeatedly (not less than twice), and the next clamping needs to perform tool setting on the feature (thread) machined in the previous process, the tool setting device or the tool complexity is increased for the machine tool.
Disclosure of Invention
The invention mainly aims to provide a finish machining device and a finish machining process for a brake screw nut.
According to a first aspect of the embodiment of the invention, there is provided a finish machining device for a brake screw nut, comprising a machine tool body arranged horizontally, a workpiece spindle arranged on the machine tool body and capable of moving along a Z direction, and an X-direction sliding plate arranged on the machine tool body and capable of moving along an X direction, wherein an internal thread rough milling spindle and an internal thread finish milling spindle which are arranged towards the workpiece spindle are arranged on the X-direction sliding plate, an internal thread milling cutter is arranged on the internal thread rough milling spindle, and a finish grinding wheel is arranged on the internal thread finish milling spindle.
According to the finish machining equipment for the brake screw nut, which is provided by the embodiment of the first aspect of the invention, the internal thread rough milling main shaft and the internal thread fine milling main shaft are arranged on the X-direction sliding plate at intervals.
According to the finish machining equipment for the brake screw nut, which is provided by the embodiment of the first aspect of the invention, the X-direction sliding plate is provided with the spindle box, and the internal thread rough milling spindle and the internal thread fine milling spindle are arranged on two sides of the spindle box.
According to the finishing equipment of the brake screw nut, which is provided by the embodiment of the first aspect of the invention, the spindle box is provided with the internal thread grinding wheel spindle swing angle device for adjusting the swing angle of the internal thread fine grinding spindle.
According to the finish machining equipment for the brake screw nut, which is provided by the embodiment of the first aspect of the invention, the X-direction sliding plate is further provided with an outer circle end face grinding wheel spindle, and the outer circle end face grinding wheel spindle is provided with an outer circle end face grinding wheel.
According to the finishing equipment of the brake screw nut, provided by the embodiment of the first aspect of the invention, the machine tool body is provided with the Z-direction sliding rail and the Z-direction sliding plate which is driven by the Z-direction transmission mechanism to move along the Z-direction sliding rail, the workpiece spindle is arranged on the Z-direction sliding plate, and the Z-direction sliding plate is also provided with the end face grinding wheel dresser and the internal thread grinding wheel dresser which are arranged parallel to the Z-direction spindle.
According to the finishing equipment of the brake screw nut, disclosed by the embodiment of the first aspect of the invention, the displacement stroke of the X-direction sliding plate moving along the X direction is larger than the distance between the outer circle end surface grinding wheel main shaft and the internal thread fine grinding main shaft.
A finish machining process of a brake screw nut comprises the following steps:
1) Clamping a screw nut workpiece to be processed on a workpiece spindle;
2) Moving an X-direction sliding plate to enable an internal thread milling cutter on an internal thread rough milling spindle to be aligned with the screw-nut workpiece, and rough machining the internal thread of the screw-nut workpiece through the internal thread milling cutter;
3) And moving the X-direction slide plate to enable a fine grinding wheel on the fine grinding spindle of the internal thread to be aligned with the screw-nut workpiece, and carrying out fine machining on the internal thread of the screw-nut workpiece through the fine grinding wheel.
According to the finishing equipment for the brake screw nut, before the step 1) or after the step 3), the X-direction sliding plate can be moved to enable the main shaft of the grinding wheel with the outer circular end face to be aligned with the outer circular and the end face of the screw nut, and the outer circular and the end face of the screw nut are machined through the grinding wheel with the outer circular end face.
One of the above technical solutions of the present invention has at least one of the following advantages or beneficial effects:
the finishing equipment and the processing technology of the brake screw nut realize the process steps of rough machining and then finish grinding aiming at screw nut parts with deeper thread raceway depths, and because the finish grinding has specially selected grinding wheels and grinding parameters, the processing precision is improved, the processing efficiency is greatly improved, the grinding wheel loss is reduced, and the cost is reduced; meanwhile, the screw-nut workpiece is clamped on the machine tool at one time to finish the whole rough and finish machining process, so that the machining precision of the workpiece is improved.
Drawings
The invention is further described below with reference to the drawings and examples;
FIG. 1 is a schematic view showing the overall structure of a finishing apparatus for a brake lead screw nut according to a first embodiment of the present invention;
FIG. 2 is a schematic view showing the overall structure of a finishing apparatus for a brake lead screw nut according to a second embodiment of the present invention;
fig. 3 is a schematic overall structure of a finishing apparatus for a brake lead screw nut according to a third embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for 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 references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed 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.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may explicitly or implicitly include one or more features.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the term "connected" should be construed broadly, and for example, it may be a fixed connection or an active connection, or it may be a detachable connection or a non-detachable connection, or it may be an integral connection; may be mechanically connected, may be electrically connected, or may be in communication with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements, indirect communication or interaction relationship between the two elements.
The following disclosure provides many different embodiments, or examples, for implementing different aspects of the invention.
Referring to fig. 1 to 3, there is provided a finishing apparatus for a brake screw nut, comprising a machine tool body 10 horizontally arranged, a workpiece spindle 20 arranged on the machine tool body 10 and movable in a Z direction, and an X-direction slide 30 arranged on the machine tool body 10 and movable in an X direction, wherein an internal thread rough milling spindle 31 and an internal thread finish milling spindle 32 arranged toward the workpiece spindle 20 are arranged on the X-direction slide 30, an internal thread milling cutter is mounted on the internal thread rough milling spindle 31, and a finish grinding wheel is arranged on the internal thread finish milling spindle 32.
A finish machining process of a brake screw nut comprises the following steps:
1) Clamping a lead screw nut workpiece to be processed on the workpiece spindle 20;
2) Moving the X-direction sliding plate 30 to enable an internal thread milling cutter on the internal thread rough milling spindle 31 to be aligned with the screw-nut workpiece, and rough machining the internal thread of the screw-nut workpiece through the internal thread milling cutter;
3) And moving the X-direction slide plate 30 to enable the finish grinding wheel on the internal thread finish grinding spindle 32 to be aligned with the screw-nut workpiece, and finishing the internal thread of the screw-nut workpiece through the finish grinding wheel.
The finishing equipment and the processing technology of the brake screw nut realize the process steps of rough machining and then finish grinding aiming at screw nut parts with deeper thread raceway depths, and because the finish grinding has specially selected grinding wheels and grinding parameters, the processing precision is improved, the processing efficiency is greatly improved, the grinding wheel loss is reduced, and the cost is reduced; meanwhile, the screw-nut workpiece is clamped on the machine tool at one time to finish the whole rough and finish machining process, so that the machining precision of the workpiece is improved.
In some embodiments of the present invention, the internal thread rough milling spindle 31 and the internal thread fine milling spindle 32 are disposed at intervals on the X-direction slide 30.
In some embodiments of the present invention, a headstock 33 is provided on the X-direction slide 30, and an internal thread rough milling spindle 31 and an internal thread fine milling spindle 32 are installed at both sides of the headstock 33.
In some embodiments of the present invention, the headstock 33 is provided with an internally threaded grinding wheel spindle swing angle device 34 for adjusting the swing angle of the internally threaded grinding spindle 32.
In some embodiments of the present invention, the X-direction slide 30 is further provided with an outer-circle end-face grinding wheel spindle 35, and the outer-circle end-face grinding wheel spindle 35 is provided with an outer-circle end-face grinding wheel.
In some embodiments of the present invention, a Z-direction slide rail and a Z-direction slide plate 11 driven by a Z-direction transmission mechanism to move along the Z-direction slide rail are provided on the machine tool body 10, a workpiece spindle 20 is mounted on the Z-direction slide plate 11, and an end face grinding wheel dresser 12 and an internal thread grinding wheel dresser 13 which are arranged parallel to the Z-direction spindle are further provided on the Z-direction slide plate 11.
In some embodiments of the present invention, the displacement travel of the X-direction slide 30 in the X-direction is greater than the spacing between the outer face grinding wheel spindle 35 and the internal thread grinding spindle 32.
In some embodiments of the present invention, before step 1) or after step 3), the X-direction slide 30 may be moved such that the outer-circle end-face grinding wheel spindle 35 is aligned with the outer circle and end face of the lead screw nut, and the outer circle and end face of the lead screw nut are machined by the outer-circle end-face grinding wheel.
The machine tool body 10 has a flat bed structure, and an X-direction transmission mechanism and a Z-direction transmission mechanism are arranged on the bed of the machine tool body 10. The machine tool has three numerical control coordinate axes of X/Z/C, comprising a C axis for rotating a workpiece main shaft 20, an internal thread fine grinding wheel main shaft swinging angle device, an internal thread rough milling or rough grinding main shaft swinging angle device, and an internal thread rough milling or rough grinding main shaft which are arranged on an X-direction sliding plate 30 which moves left and right, and the workpiece main shaft 20, an internal thread grinding wheel trimmer 13 and a Z-direction sliding plate 11 which moves back and forth.
In some embodiments of the invention, an internal thread rough milling or rough milling spindle swinging angle device is added, so that during rough milling or rough milling processing, processing can be performed according to the helix angle of the internal raceway thread helix, thus improving the processing precision of rough processing, and further reducing the processing allowance of fine grinding, thereby improving the processing efficiency.
In some embodiments of the invention, the outer circle end face grinding wheel spindle 35 and the outer circle end face grinding wheel dresser 12 are added for grinding the outer circle and the end face of the screw nut workpiece, namely, the machine tool can finish the inner raceway rough machining, fine grinding, outer circle grinding, end face grinding and the like of the nut by one-time clamping.
The combination of compound grinding is carried out, the machining precision is improved, and the grinding efficiency is greatly improved.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410119705.9A CN117862884A (en) | 2024-01-26 | 2024-01-26 | A finishing equipment and processing technology for brake screw nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410119705.9A CN117862884A (en) | 2024-01-26 | 2024-01-26 | A finishing equipment and processing technology for brake screw nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117862884A true CN117862884A (en) | 2024-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410119705.9A Pending CN117862884A (en) | 2024-01-26 | 2024-01-26 | A finishing equipment and processing technology for brake screw nut |
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| Country | Link |
|---|---|
| CN (1) | CN117862884A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118342344A (en) * | 2024-05-14 | 2024-07-16 | 广州市敏嘉制造技术有限公司 | A machine tool and processing technology capable of automatically swinging and grinding the inner and outer cones of a spindle |
| CN120619496A (en) * | 2025-06-13 | 2025-09-12 | 金长利五金制品(惠州)有限公司 | Finish machining device and machining process for brake screw-nut |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210209389U (en) * | 2019-05-24 | 2020-03-31 | 山东普鲁特机床有限公司 | Turning and grinding integrated machine for internal threads of screw nuts |
| CN218017024U (en) * | 2022-08-15 | 2022-12-13 | 广州市敏嘉制造技术有限公司 | Machine tool for processing screw nut of electronic braking system |
| CN117324962A (en) * | 2023-10-31 | 2024-01-02 | 广东锐锋机械有限公司 | Five-axis turning, milling and grinding integrated machine |
| CN221538353U (en) * | 2024-01-26 | 2024-08-16 | 广州市敏嘉制造技术有限公司 | Finish machining equipment for brake screw rod nut |
-
2024
- 2024-01-26 CN CN202410119705.9A patent/CN117862884A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210209389U (en) * | 2019-05-24 | 2020-03-31 | 山东普鲁特机床有限公司 | Turning and grinding integrated machine for internal threads of screw nuts |
| CN218017024U (en) * | 2022-08-15 | 2022-12-13 | 广州市敏嘉制造技术有限公司 | Machine tool for processing screw nut of electronic braking system |
| CN117324962A (en) * | 2023-10-31 | 2024-01-02 | 广东锐锋机械有限公司 | Five-axis turning, milling and grinding integrated machine |
| CN221538353U (en) * | 2024-01-26 | 2024-08-16 | 广州市敏嘉制造技术有限公司 | Finish machining equipment for brake screw rod nut |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118342344A (en) * | 2024-05-14 | 2024-07-16 | 广州市敏嘉制造技术有限公司 | A machine tool and processing technology capable of automatically swinging and grinding the inner and outer cones of a spindle |
| CN120619496A (en) * | 2025-06-13 | 2025-09-12 | 金长利五金制品(惠州)有限公司 | Finish machining device and machining process for brake screw-nut |
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