Multi-station clamping shaft part milling device
The multi-station clamping milling device for shaft parts, by combining the design of X-axis, Y-axis, Z-axis linear modules and positioning units, solves the problem of bending deformation caused by poor clamping quality in the milling of slender shafts, and achieves stable positioning and high-precision machining.
Patent Information
- Application Number
- CN202511848110.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-02-27
AI Technical Summary
Slender shafts are prone to bending and deformation during milling due to poor clamping quality, especially sagging in the middle, which affects machining accuracy and safety.
The multi-station clamping milling device for shaft parts uses a combination of X-axis, Y-axis, and Z-axis linear modules and milling heads, along with a three-jaw chuck and positioning unit design, to achieve multi-station clamping of the parts to be processed. The linkage of the first and second positioning units ensures stable positioning of the parts to be processed during the milling process.
It effectively supports the middle part of the slender shaft, prevents bending deformation, improves machining accuracy and safety, and ensures the stability and precision of the milling process.
Smart Images
Figure CN121571689A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of machining technology for shaft parts, and in particular to a multi-station clamping milling device for shaft parts. Background Technology
[0002] When machining non-rotational features such as keyways, splines, planes, or irregular contours on shaft parts, milling is required. During milling, the intermittent cutting action of the milling cutter generates periodic impact forces, which can easily lead to workpiece vibration or displacement. Therefore, precise clamping and positioning are essential during the milling of shaft parts to ensure machining accuracy and safety.
[0003] Slender shafts with an aspect ratio (L / d) ≥ 20 require support at both ends during milling to prevent bending deformation and vibration under their own weight and cutting forces. However, even with support at both ends, the slender shaft is still prone to sagging in the middle when the cutting tool is milling the middle section. Summary of the Invention
[0004] The purpose of this invention is to provide a multi-station clamping milling device for shaft parts, so as to solve the problem that poor clamping quality during the milling of slender shafts can easily lead to bending and deformation.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multi-station clamping milling device for shaft parts, comprising: The milling module includes an X-axis linear module, a Y-axis linear module, a Z-axis linear module, and a milling head. The X-axis linear module has Y-axis linear modules symmetrically arranged at both ends. The X-axis linear module is fixedly mounted on the second slide of the Y-axis linear module, the Z-axis linear module is fixedly mounted on the first slide of the X-axis linear module, and the milling head is fixedly mounted on the third slide of the Z-axis linear module. The clamping module includes a mounting plate, an indexing head, a first positioning unit, a second positioning unit, a first linkage rod, and a first drive cylinder. The indexing head is fixedly mounted on one side of the mounting plate, and a three-jaw chuck is fixedly mounted on the spindle of the indexing head. The first positioning unit is fixedly mounted on the other side of the mounting plate, and the second positioning unit is disposed between the indexing head and the first positioning unit. The second positioning unit is slidably connected to the mounting plate. One end of the first linkage rod is fixedly mounted on the second positioning unit, and the opposite end passes through the first positioning unit and connects to the synchronization block. The first drive cylinder is fixedly mounted on the mounting plate, and the piston rod end of the first drive cylinder is fixedly mounted on the synchronization block. In this process, one end of the part to be processed is clamped and fixed in a three-jaw chuck, while the other end is sequentially inserted into the second positioning unit and the first positioning unit.
[0006] As a further description of the above technical solution: The mounting plate is slidably connected to the frame, and a second drive cylinder is installed on the frame. The end of the piston rod of the frame is fixedly mounted on the mounting plate.
[0007] As a further description of the above technical solution: The frame is equipped with two parallel slide rails, and the mounting plate is slidably connected to the slide rails.
[0008] As a further description of the above technical solution: The first positioning unit includes a base, a housing, an electric push rod, a drive plate, transmission gears, and a clamping block. The base is fixedly mounted on the mounting plate, the housing is fixedly mounted on the base, and the electric push rod is fixedly mounted on the base. The piston rod of the electric push rod extends into the housing and connects to the drive plate. The drive plate has symmetrically arranged first rack portions on both sides. Two transmission gears are symmetrically arranged on both sides of the drive plate. The transmission gears are rotatably mounted on the housing and mesh with the first rack portions. The clamping block is slidably connected to the housing. The bottom surface of the clamping block has a second rack portion that meshes with the transmission gears. The clamping block has a "V"-shaped notch.
[0009] As a further description of the above technical solution: The shell has ribs on one of its opposite sidewalls, and the clamping block has grooves on its sidewalls that match the cross-section of the ribs.
[0010] As a further description of the above technical solution: A baffle is provided above the first drive cylinder, and the baffle is fixedly installed on the first positioning unit.
[0011] As a further description of the above technical solution: The cover is fixedly installed on the first positioning unit by bolts.
[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, when milling a slender shaft-type workpiece, one end of the workpiece is first clamped and fixed in a three-jaw chuck, and the other end of the workpiece is clamped and positioned by a first positioning unit. The second positioning unit can slide by driving the first linkage rod through a first driving cylinder. During the milling process, as the milling head moves in the XYZ direction through the X-axis linear module, Y-axis linear module, and Z-axis linear module, the second positioning unit moves along with the milling head in the X-axis direction, keeping the distance between the second positioning unit and the milling head constant in the X-axis direction. This effectively supports the middle part of the workpiece, realizes multi-station clamping, and solves the problem of bending deformation caused by poor clamping quality during the milling of slender shafts.
[0013] 2. In this invention, during the process of the first linkage rod driving the second positioning unit to slide, the first positioning unit is used to position the first linkage rod, so that the second positioning unit moves smoothly and ensures that the second positioning unit and the first positioning unit are precisely aligned, thus ensuring the positioning effect of the part to be processed. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of a multi-station clamping milling device for shaft parts.
[0016] Figure 2 This is a schematic diagram of the clamping module in a multi-station clamping milling device for shaft parts.
[0017] Figure 3 This is a schematic diagram showing the state changes of the clamping module in a multi-station clamping milling device for shaft parts.
[0018] Figure 4 This is a schematic diagram of the structure of the first positioning unit in a multi-station clamping milling device for shaft parts.
[0019] Legend: 1. Milling module; 11. X-axis linear module; 12. Y-axis linear module; 13. Z-axis linear module; 14. Milling head; 2. Clamping module; 21. Mounting plate; 22. Indexing head; 221. Three-jaw chuck; 23. First positioning unit; 231. Base; 232. Housing; 2321. Rib; 233. Electric push rod; 234. Drive plate; 235. Transmission gear; 236. Clamping block; 2361. Second rack section; 24. Second positioning unit; 25. First linkage rod; 251. Synchronizing block; 26. First drive cylinder; 261. Baffle; 8. Parts to be processed; 9. Frame; 91. Second drive cylinder. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention. Example 1
[0022] Please see Figure 1-4 This invention provides a technical solution: a multi-station clamping milling device for shaft parts, comprising: The milling module 1 includes an X-axis linear module 11, a Y-axis linear module 12, a Z-axis linear module 13, and a milling head 14. The X-axis linear module 11 has Y-axis linear modules 12 symmetrically arranged at both ends. The X-axis linear module 11 is fixedly mounted on the second slide of the Y-axis linear module 12. The Z-axis linear module 13 is fixedly mounted on the first slide of the X-axis linear module 11. The milling head 14 is fixedly mounted on the third slide of the Z-axis linear module 13. The clamping module 2 includes a mounting plate 21, an indexing head 22, a first positioning unit 23, a second positioning unit 24, a first linkage rod 25, and a first drive cylinder 26. The indexing head 22 is fixedly mounted on one side of the mounting plate 21. The three-jaw chuck 221 is fixedly mounted on the spindle of the indexing head 22 by means of flange connection or threaded connection. The first positioning unit 23 is fixedly mounted on the other side of the mounting plate 21. The second positioning unit 24 is disposed between the indexing head 22 and the first positioning unit 23. The second positioning unit 24 is slidably connected to the mounting plate 21. One end of the first linkage rod 25 is fixedly mounted on the second positioning unit 24, and the other end passes through the first positioning unit 23 and connects to the synchronization block 251. The first drive cylinder 26 is fixedly mounted on the mounting plate 21, and the piston rod end of the first drive cylinder 26 is fixedly mounted on the synchronization block 251. In this process, one end of the part to be processed 8 is clamped and fixed in the three-jaw chuck 221, and the other end is sequentially inserted into the second positioning unit 24 and the first positioning unit 23.
[0023] During the process of the first linkage rod 25 driving the second positioning unit 24 to slide, the first positioning unit 23 is used to position the first linkage rod 25, so that the second positioning unit 24 moves smoothly and ensures that the second positioning unit 24 and the first positioning unit 23 are precisely aligned, thus ensuring the positioning effect of the part 8 to be processed.
[0024] Working principle: When milling a slender shaft type workpiece 8, one end of the workpiece 8 is first clamped and fixed in a three-jaw chuck 221, and the other end of the workpiece 8 is clamped and positioned by a first positioning unit 23. The second positioning unit 24 can slide by driving the first linkage rod 25 through the first drive cylinder 26. During the milling process, as the milling head 14 moves in the XYZ direction through the X-axis linear module 11, Y-axis linear module 12, and Z-axis linear module 13, the second positioning unit 24 moves along with the milling head 14 in the X-axis direction. The distance between the second positioning unit 24 and the milling head 14 in the X-axis direction is kept constant, thereby effectively supporting the middle of the workpiece 8, realizing multi-station clamping, and solving the problem of bending deformation caused by poor clamping quality during the milling of slender shafts. Example 2
[0025] Based on the above embodiments, this embodiment further improves upon the following technical solution: the mounting plate 21 is slidably connected to the frame 9, the frame 9 is provided with a second drive cylinder 91, and the piston rod end of the frame 9 is fixedly mounted on the mounting plate 21.
[0026] The second drive cylinder 91 is fixedly installed on the frame 9. The extension and retraction of the piston rod of the second drive cylinder 91 controls the mounting plate 21 and the entire clamping module 2 to move closer to or further away from the front side of the frame 9, so that the workers at the front side of the frame 9 can load and unload the parts 8 to be processed on the clamping module 2.
[0027] Preferably, two parallel slide rails are provided on the frame 9, and the mounting plate 21 is slidably connected to the slide rails, so that the mounting plate 21 can slide smoothly on the frame 9. Example 3
[0028] Based on the above embodiments, this embodiment further improves upon the following technical solutions: the first positioning unit 23 and the second positioning unit 24 have the same structure, the difference being that the first positioning unit 23 is fixed in position, while the second positioning unit 24 is slidably connected, and during the milling process, the first positioning unit 23 clamps the workpiece 8 to be processed, while the second positioning unit 24 does not clamp the workpiece 8 to be processed.
[0029] Taking the first positioning unit 23 as an example, the first positioning unit 23 includes a base 231, a housing 232, an electric push rod 233, a drive plate 234, a transmission gear 235, and a clamping block 236. The base 231 is fixedly installed on the mounting plate 21, the housing 232 is fixedly installed on the base 231, the electric push rod 233 is fixedly installed on the base 231, the piston rod of the electric push rod 233 extends into the housing 232 and connects to the drive plate 234, the drive plate 234 has symmetrically arranged first rack portions on both sides, two transmission gears 235 are symmetrically arranged on both sides of the drive plate, the transmission gears 235 are rotatably installed on the housing 232, the transmission gears 235 mesh with the first rack portions, the clamping block 236 is slidably connected to the housing 232, the bottom surface of the clamping block 236 has a second rack portion 2361, the second rack portion 2361 meshes with the transmission gear 235, and the clamping block 236 has a "V" shaped notch.
[0030] The positioning principle of the part to be processed 8 is as follows: the piston rod of the electric push rod 233 causes the drive plate 234 to reciprocate in the vertical direction. The drive plate 234 drives the transmission gear 235 to rotate through the first rack part on the side. Then, through the meshing of the second rack part 2361 with the transmission gear 235, the two clamping blocks 236 move synchronously, thereby realizing the clamping or releasing of the part to be processed 8. Example 4
[0031] Based on the above embodiments, this embodiment further improves upon the following technical solution: a rib 2321 is provided on one opposite side wall of the housing 232, and a groove with a shape matching the cross-section of the rib 2321 is provided on the side wall of the clamping block 236.
[0032] This allows the clamping block 236 to be effectively supported by the protruding rib 2321, thereby enabling the first positioning unit 23 to effectively support and position the workpiece 8 to be processed, preventing the workpiece 8 from bending or deforming. Example 5
[0033] This embodiment further improves upon the above embodiment by providing the following technical solution: a baffle 261 is provided above the first drive cylinder 26, and the baffle 261 is fixedly mounted on the first positioning unit 23. The baffle 261 effectively hides and protects the end of the first drive cylinder 26.
[0034] Preferably, the baffle 261 is fixedly mounted on the base 231 of the first positioning unit 23 by bolts, which facilitates the disassembly and assembly of the baffle 261 and thus facilitates the maintenance of the first drive cylinder 26.
[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A multi-station clamping milling device for shaft parts, characterized in that, include: A milling module includes an X-axis linear module, a Y-axis linear module, a Z-axis linear module, and a milling head. The Y-axis linear modules are symmetrically arranged at both ends of the X-axis linear module. The X-axis linear modules are fixedly mounted on the second slide of the Y-axis linear module. The Z-axis linear module is fixedly mounted on the first slide of the X-axis linear module. The milling head is fixedly mounted on the third slide of the Z-axis linear module. The clamping module includes a mounting plate, an indexing head, a first positioning unit, a second positioning unit, a first linkage rod, and a first drive cylinder. The indexing head is fixedly mounted on one side of the mounting plate, and a three-jaw chuck is fixedly mounted on the spindle of the indexing head. The first positioning unit is fixedly mounted on the other side of the mounting plate, and the second positioning unit is disposed between the indexing head and the first positioning unit and is slidably connected to the mounting plate. One end of the first linkage rod is fixedly mounted on the second positioning unit, and the opposite end passes through the first positioning unit and connects to a synchronization block. The first drive cylinder is fixedly mounted on the mounting plate, and the piston rod end of the first drive cylinder is fixedly mounted on the synchronization block. In this configuration, one end of the part to be processed is clamped and fixed inside the three-jaw chuck, while the other end is sequentially inserted into the second positioning unit and the first positioning unit.
2. The multi-station clamping milling device for shaft parts according to claim 1, characterized in that, The mounting plate is slidably connected to the frame, and a second drive cylinder is provided on the frame. The piston rod end of the frame is fixedly mounted on the mounting plate.
3. The multi-station clamping milling device for shaft parts according to claim 2, characterized in that, The frame is provided with two parallel slide rails, and the mounting plate is slidably connected to the slide rails.
4. The multi-station clamping milling device for shaft parts according to claim 1, characterized in that, The first positioning unit includes a base, a housing, an electric push rod, a drive plate, transmission gears, and a clamping block. The base is fixedly mounted on the mounting plate, the housing is fixedly mounted on the base, and the electric push rod is fixedly mounted on the base. The piston rod of the electric push rod extends into the housing and connects to the drive plate. The drive plate has symmetrically arranged first rack portions on both sides. Two transmission gears are symmetrically arranged on both sides of the drive plate and are rotatably mounted on the housing. The transmission gears mesh with the first rack portions. The clamping block is slidably connected to the housing. The bottom surface of the clamping block has a second rack portion that meshes with the transmission gears. The clamping block has a "V"-shaped notch.
5. A multi-station clamping milling device for shaft parts according to claim 4, characterized in that, The housing has a raised rib on one of its opposite sidewalls, and the clamping block has a groove on its sidewall that matches the cross-section of the raised rib.
6. A multi-station clamping milling device for shaft parts according to claim 1, characterized in that, A baffle is provided above the first drive cylinder, and the baffle is fixedly installed on the first positioning unit.
7. A multi-station clamping milling device for shaft parts according to claim 6, characterized in that, The baffle is fixedly installed on the first positioning unit by bolts.