Face milling tool for thin-wall product
By optimizing the clamping and support structure, the vibration and deformation problems of thin-walled plates during milling are solved, achieving high-precision and high-efficiency machining results.
Patent Information
- Application Number
- CN202423318876.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Thin-walled plates are prone to vibration and deformation during milling, resulting in insufficient machining accuracy. Furthermore, traditional fixing methods are cumbersome and inefficient.
The system employs clamping devices, support devices, and error-prevention devices, including a rotary clamping mechanism, a floating support mechanism, and error-prevention columns. Through precise positioning and uniform force distribution, vibration and deformation are avoided, thereby improving processing accuracy and efficiency.
To ensure the stability and precision of thin-walled products during the milling process, reduce machining errors, and improve production efficiency and yield.
Smart Images
Figure CN223643299U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to processing frock technical field, concretely relates to a kind of milling frock for thin-walled product. BACKGROUND
[0002] At present, the thin-walled plate part to be milled is provided with a plurality of blind holes and through holes, part of which is provided for facilitating processing, and in actual milling, a through hole at a certain position is selected as an error-proof hole to facilitate preliminary and rapid positioning of the plate part and prevent misorientation.
[0003] When the thin-walled plate part is subjected to milling operation, it is often fixed and supported by a conventional screw and nut combination, but since the thin-walled plate part has a thin wall thickness, when only fixed support is provided, vibration is likely to occur during milling operation of the periphery of the thin-walled plate part if the support height of part of the support is not adjusted to the same plane due to uneven support contact, and at this time, the milling cutter will have machining tolerance on the plate part, and deformation is likely to occur due to uneven stress, resulting in insufficient machining precision of the thin-walled product and substandard product machining quality. Furthermore, the fixing operation process of the screw and nut is extremely cumbersome, and the positioning accuracy is insufficient, resulting in low machining efficiency. Therefore, in order to solve the above problems and overcome the defects of the prior art, there is an urgent need for a milling frock for thin-walled product that can efficiently clamp and accurately position the thin-walled product to ensure its machining precision and quality. SUMMARY
[0004] The utility model intends to provide a kind of milling frock for thin-walled product, by optimizing support mechanism, simplify the operation process of positioning support, improve fixed efficiency, and then improve the milling precision of thin-walled product and product machining quality.
[0005] To achieve the above object, the utility model adopts the following technical scheme:
[0006] A kind of milling frock for thin-walled product, including table body, still including clamping device, support device and error-proof device installed and fixed on the table body, clamping device includes rotating pressing mechanism and jacking mechanism, rotating pressing mechanism is detachably set in the outermost circle of the four edges of table body, support device includes floating support mechanism and fixed support mechanism, floating support mechanism is elastic positioning component, jacking mechanism and support device are arranged in inner circle and tightly attached to rotating pressing mechanism, and the position of jacking mechanism and support device corresponds the position of blind hole and through hole on plate part;Error-proof device is error-proof column, corresponding to the error-proof hole of plate part.
[0007] The principle and advantages of the present scheme are:
[0008] The clamping device and the supporting device of the scheme ensure the stability of the thin-walled workpiece in the process of milling the edge area around the periphery through precise structural design. The clamping device and the supporting device are arranged corresponding to the holes arranged on the thin-walled plate for convenient machining, the plate is supported at the bottom around the periphery through the floating supporting mechanism and the fixed supporting mechanism, the floating supporting mechanism is an elastic positioning component and can guide and transmit vibration in the process of milling, thereby avoiding the problem of reduced milling accuracy caused by vibration. The rotary pressing mechanism applies downward pressing force, the rotary pressing mechanism can be lifted to rotate and avoid the milling area, thereby preventing blocking and affecting the milling effect, the jacking mechanism applies upward jacking force, and the clamping device cooperates with the bottom support to stably clamp and prevent any movement or deformation of the plate. The error-proof column cooperates with the error-proof hole of the thin-walled plate to form preliminary positioning, and the risk of machining error caused by incorrect placement of the thin-walled plate is avoided.
[0009] In view of the deficiencies of the prior art, the utility model discloses setting proper clamping and supporting positions, ensuring the stability and coordination of the clamping device, the supporting device and the error-proof device. The deformation and displacement of the thin-walled workpiece in the machining process can be effectively avoided, and the milling machining precision is improved.
[0010] Further, the fixed supporting mechanism includes at least three supporting columns, and the connecting lines between the supporting columns form a triangular plane, which is parallel to the upper surface of the table body.
[0011] The supporting columns arranged in a triangular shape form a triangular supporting plane, and the uniform stress distribution of the triangular plane avoids the inclination or deformation of the plate in the clamping process. The triangular layout ensures the uniform distribution of the fixed supporting mechanism, enhances the rigidity and stability of the tooling, further improves the machining precision and surface quality of the thin-walled product, and ensures the production efficiency and yield.
[0012] Further, the number of floating supporting mechanisms is set corresponding to the number of positioning holes of the plate, and the connecting lines between the floating supporting mechanisms form a plane that is coplanar with the triangular plane formed by the connecting lines of the fixed supporting mechanism.
[0013] The number of floating supporting mechanisms is flexibly set according to the positioning holes and stress conditions of the plate, which can effectively optimize the stability of the supporting device. In addition, the layout of the floating supporting mechanism and the fixed supporting mechanism is coplanar, which further improves the accuracy of the support, ensures the cooperative action of the auxiliary support and the fixed support, further optimizes the stress distribution, and improves the overall stability, thereby effectively reducing the vibration influence in the milling process and ensuring the high-precision machining effect of the thin-walled workpiece.
[0014] Further, the utility model also includes a controller, the rotary pressing mechanism is a rotary cylinder, and the controller is used for controlling the opening and closing of the valves of each rotary cylinder, thereby controlling the pressing and loosening of the single rotary pressing mechanism.
[0015] The rotary clamping mechanism is located on all four sides of the table. By controlling the air valves of the rotary cylinders, the clamping and releasing of individual rotary clamping mechanisms can be controlled according to the movement of the milling cutter, avoiding interference between the milling cutter and the rotary clamping mechanism. This makes the tooling more flexible and improves the overall operational efficiency and accuracy.
[0016] Furthermore, the elastic component is a floating positioning pin, which is set at the diagonal position of the corresponding plate.
[0017] Floating locating pins effectively compensate for minor deviations caused by workpiece errors, thermal expansion and contraction, etc., ensuring precise positioning of the sheet metal during processing. This reduces processing errors caused by part defects, improving workpiece machining accuracy and assembly quality. Floating locating pins positioned diagonally form stable diagonal supports, further optimizing the sheet metal's positioning accuracy, ensuring consistency among components during processing, and enhancing the stability and reliability of the overall machining system.
[0018] Furthermore, the anti-misalignment post is a rigid plastic post that can be detachably connected to the upper surface of the platform, and the diameter of the anti-misalignment post is equal to the diameter of the anti-misalignment hole.
[0019] Choose the size of the anti-misalignment post according to the diameter of the anti-misalignment hole. Using a rigid plastic post helps protect the anti-misalignment hole and prevents friction and scratches.
[0020] Furthermore, the rotary clamping mechanism includes a clamping block, on which an anti-wear strip is provided.
[0021] By incorporating anti-wear strips on the clamping blocks, wear on the workpiece during clamping can be effectively reduced, and the durability of the clamping blocks can be improved. The low coefficient of friction of the anti-wear strips also ensures smooth movement of the clamping blocks, reducing scratches or damage to the workpiece surface, thereby improving processing quality. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.
[0023] Figure 2 This is a schematic diagram of the plate opening structure according to an embodiment of the present utility model.
[0024] Figure 3 This is a schematic diagram showing the relative positions of the fixed support mechanism and the tightening mechanism in an embodiment of this utility model.
[0025] Figure 4 This is a schematic diagram showing the state in which the entire plate is pressed together according to an embodiment of the present utility model.
[0026] Figure 5 This is a schematic diagram of the partially loosening upper rotating clamping mechanism according to an embodiment of the present invention.
[0027] Figure 6 This is a partial schematic diagram illustrating the operating principle of an embodiment of the present invention. Detailed Implementation
[0028] The following detailed description illustrates the specific implementation method:
[0029] The reference numerals in the accompanying drawings include: platform 1, plate 2, first through hole 201, second through hole 202, first blind hole 203, second blind hole 204, rotary clamping mechanism 3, clamping block 301, cylinder body 302, Teflon tape 303, floating support mechanism 4, tightening mechanism 5, anti-misalignment column 6, and fixed support mechanism 7.
[0030] Example 1 is basically as shown in the attached document. Figures 1-6 As shown:
[0031] As attached Figure 1 As shown, a milling fixture for thin-walled products includes an operating table 1 and a plate 2, and also includes a clamping device, a support device and an anti-misalignment device disposed on the table 1. The clamping device includes a rotary pressing mechanism 3 and a top clamping mechanism 5, the support device includes a floating support mechanism 4 and a fixed support mechanism 7, and the anti-misalignment device is an anti-misalignment column 6.
[0032] A fixed support mechanism 7 is installed on the platform 1. The fixed support mechanism 7 consists of three support columns, which are arranged and installed close to the rotating clamping mechanism 3. The lines connecting the three support columns are shown in the attached figure. Figure 3 The triangular shape provided by the plate 2 provides extremely high stability and enables basic positioning and fixation of the plate 2. It prevents the plate 2 from sliding while providing stable upward support. The force application point of the clamping block 301 and the support point of the support column are on the same line and facing the center of the plate 2, which can achieve the strongest stable clamping effect.
[0033] As attached Figure 3 As shown, five clamping mechanisms 5 are set according to the hole positions of plate 2. Considering that plate 2 is a thin-walled workpiece, the clamping mechanism 5 in this embodiment is a pneumatic support cylinder. The installation position of the pneumatic support cylinder is close to the rotary clamping mechanism 3. The line connecting the five pneumatic support cylinders forms two coplanar intersecting triangles. The two coplanar intersecting triangles form a stable support surface, which can make plate 2 be supported in parallel and avoid positioning deviation. At the same time, a floating support mechanism 4, such as a floating positioning pin, is also provided at the diagonal position corresponding to plate 2. The floating positioning pin is used for accurate positioning of the part and compensates for deformation caused by factors such as dimensional error and thermal expansion and contraction of the part within a certain range, thereby improving the machining accuracy and assembly quality of the part. In addition, since the floating positioning pin has an elastic effect, it can play a buffering role, reducing the vibration and impact of the part during assembly or use. It can absorb part of the impact force, thereby improving the milling effect and improving the machining accuracy and quality.
[0034] The rotary clamping mechanism 3 is located on the upper surface of the platform 1. In this embodiment, the rotary clamping mechanism 3 uses rotary cylinders, totaling eight. To facilitate observation of the structural composition of this device, the air pipes and valves of the rotary cylinders are not shown. (Refer to the attached diagram.) Figure 2 The holes at the bottom of plate 2 correspond to the mounting positions of the rotary clamping mechanism 3. The mounting positions of the rotary clamping mechanism 3 are shown in the attached figure. Figure 4 As shown, the rotary clamping mechanism 3 consists of a clamping block 301 and a cylinder body 302. (See attached diagram) Figure 5 and attached Figure 6 As shown, the controller controls the opening and closing of the valve on the air pipe of a single rotary clamping mechanism 3 to lift and rotate the clamping block 301. When the milling cutter is about to move to a certain area of the rotary clamping mechanism 3 for milling, the controller controls the valve on the air pipe to open, and the clamping block 301 lifts and rotates to avoid the milling cutter. When the milling cutter completes the milling and leaves the area of the rotary clamping mechanism 3, the clamping block 301 rotates back to its original position to clamp the plate 2. In addition, in order to improve the durability of the clamping block 301 and to protect the plate 2, a Teflon tape 303 is provided on the head of the clamping block 301. Teflon has an extremely low coefficient of friction, its surface does not easily adhere to any substance, it has good wear resistance, can improve the smoothness of the movement of the clamping block 301, and is less likely to contaminate or damage the plate 2.
[0035] The error prevention device on the platform 1 is an error prevention post. In order to prevent damage to the error prevention hole of the plate 2, the error prevention post is a rigid plastic post. The error prevention post is installed on the platform corresponding to the position of the error prevention hole on the plate 2, which can be used for preliminary positioning. If the position of the plate 2 is incorrect, the plate 2 will not be able to be placed on the platform 1, thus avoiding the problem of processing error.
[0036] The specific implementation method is as follows:
[0037] Adjust the milling fixture for thin-walled products to the clamping state. Align the second through hole 202 of plate 2 with the anti-misalignment post and insert it. Plate 2 falls and is fixed to the three support posts through the first blind hole 203 on plate 2. At this time, the floating positioning pin is inserted into the first through hole 201 of plate 2. Plate 2 is in a horizontal state under the action of the support posts and the floating positioning pin. Activate the pneumatic support cylinder, which supports plate 2 in the corresponding second blind hole 204. At this time, plate 2 enters the clamping state under the action of the clamping mechanism 5 and the support device. Rotate the cylinder to press down and complete the clamping of plate 2.
[0038] The milling process begins. When the milling cutter is about to move to the area of a certain rotary cylinder, the controller controls the valve of the air pipe of that rotary cylinder to open. The clamping block 301 of the rotary cylinder is lifted and rotated 90° out of the area outside the plate 2, leaving space for the milling cutter to mill. When the milling cutter finishes milling and leaves the area of the rotary cylinder, the clamping block 301 rotates back to its original position to clamp the plate 2. This process is repeated to complete the milling operation of the entire plate 2. The controller controls the valves of all air pipes to open, and the clamping blocks 301 of all rotary cylinders are lifted and rotated 90° out of the area outside the plate 2 to release the plate 2. Then the plate 2 is removed.
[0039] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A milling fixture for thin-walled products, comprising a platform, characterized in that: It also includes clamping devices, support devices, and error-proofing devices that are installed and fixed on the platform. The clamping devices include a rotary clamping mechanism and a top clamping mechanism. The rotary clamping mechanism is detachably installed on the outermost ring of the four sides of the platform. The support devices include a floating support mechanism and a fixed support mechanism. The floating support mechanism is an elastic positioning component. The top clamping mechanism and the support device are arranged close to the rotary clamping mechanism on the inner ring, and the positions of the top clamping mechanism and the support device correspond to the blind holes and through holes on the plate. The error-proofing device is an error-proofing post that corresponds to the error-proofing holes on the plate.
2. The milling fixture for thin-walled products according to claim 1, characterized in that: The fixed support mechanism includes at least three support columns, and the lines connecting the support columns form a triangular plane, which is parallel to the upper surface of the platform.
3. The milling fixture for thin-walled products according to claim 2, characterized in that: The number of floating support mechanisms is set according to the number of positioning holes in the plate, and the plane formed by the lines connecting the floating support mechanisms is coplanar with the triangular plane formed by the lines connecting the fixed support mechanisms.
4. A milling fixture for thin-walled products according to claim 3, characterized in that: It also includes a controller, wherein the rotary pressing mechanism is a rotary cylinder, and the controller is used to control the opening and closing of the valves of each rotary cylinder, thereby controlling the pressing and releasing of a single rotary pressing mechanism.
5. A milling fixture for thin-walled products according to claim 1, characterized in that: The elastic positioning component is a floating positioning pin, which is set at the diagonal position of the corresponding plate.
6. A milling fixture for thin-walled products according to claim 1, characterized in that: The anti-misalignment column is a rigid plastic column that can be detachably connected to the upper surface of the platform, and the diameter of the anti-misalignment column is equal to the diameter of the anti-misalignment hole.
7. A milling fixture for thin-walled products according to claim 1, characterized in that: The rotary clamping mechanism includes a clamping block, and the clamping block is provided with an anti-wear strip.