Positioning device for milling special-shaped part

Abstract

A positioning device for milling a special-shaped part relates to the technical field of tool clamps and comprises a support, a corner cylinder, a pressing plate and an adjustable supporting device. The support is installed on a machine tool workbench and used for bearing other assemblies. Wherein the corner cylinder drives the pressing plate to rotate and press downwards, and stable clamping of the special-shaped workpiece is achieved. By adjusting the horizontal position and the vertical position of the adjustable supporting device, the device can adapt to workpieces of different specifications. The adjustable supporting device is composed of a sliding rail, a cylinder body, a piston, a reset spring, a piston rod and the like, accurate positioning of the piston and the piston rod of the piston is achieved through an oil pipe and a switch assembly, and the supporting stability is ensured. In addition, the design of the switch assembly and the structure of the support are optimized, the number of supporting legs is increased to enhance durability, and by improving the layout of the pressing plate and the adjustable supporting device, the equipment utilization rate and the operation efficiency are improved. The device is flexible in structure, and can effectively reduce the production cost and improve the production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and in particular to a positioning device for milling irregularly shaped parts. Background Technology

[0002] In today's machining industry, milling irregularly shaped parts represents a challenging field. Given the complex shape and non-planar support surfaces of these parts, securely mounting them on machine tool tables using traditional methods is particularly difficult. The main strategy for addressing this challenge is to design specialized contour-following supports. These supports are customized based on the actual support surfaces of the irregularly shaped part, and a rotary cylinder drives a pressure plate to rotate and press down, ensuring the part is firmly fixed to the contour-following support.

[0003] However, this traditional fixing method has some limitations. First, producing dedicated contour support seats is both time-consuming and labor-intensive, especially when dealing with multiple specifications and small-scale production; frequent replacement of support seats significantly increases costs. Second, due to the diversity of shapes and sizes of irregularly shaped parts, traditional fixing methods struggle to efficiently adapt to the needs of different workpieces, resulting in low processing efficiency. Furthermore, the complex adjustment and replacement process of the support seats during machining further hinders production efficiency. Therefore, developing a positioning device that can flexibly adapt to various specifications of irregularly shaped parts and is easy to operate is of paramount importance for improving the efficiency of milling irregularly shaped parts and reducing costs. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model discloses a positioning device for milling irregular parts, which aims to improve the adaptability and stability of milling irregular parts by optimizing the structure of the support device, so as to significantly reduce production costs and improve production efficiency.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0006] A positioning device for milling irregularly shaped parts includes:

[0007] Support, mounted on the machine tool's worktable;

[0008] Multiple corner cylinders are arranged in an array on the support;

[0009] The pressure plate is installed on the actuator end of the rotary cylinder. The rotary cylinder drives the pressure plate to rotate and press down to clamp the irregularly shaped workpiece.

[0010] An adjustable support device is installed on one side of the corner cylinder to support irregularly shaped workpieces. The horizontal and vertical positions of the support components of the adjustable support device can be adjusted to accommodate irregularly shaped workpieces of different specifications.

[0011] A partition plate is installed on the top of the cylinder body of the corner cylinder, and the partition plate is provided with openings corresponding to the positions of the execution end of the corner cylinder and the support part of the adjustable support device;

[0012] The adjustable support device comprises:

[0013] A sliding rail is installed on the support;

[0014] Two cylinder bodies are slidably connected to the sliding rail at the bottom;

[0015] A piston is installed in the cylinder body;

[0016] A reset spring is arranged between the bottom of the cylinder body and the piston, and is used to drive the piston to move upward and reset;

[0017] A piston rod is tightly connected to one end of the piston and movably penetrates the top of the cylinder body at the other end;

[0018] An oil pipe is in communication with the top of the cylinder body at one end and is in communication with the bottom of the cylinder body at the other end;

[0019] A switch assembly is installed at the bottom of the support and is used to control the on-off of the oil circuit.

[0020] Preferably, the sliding rail has a dovetail structure, the support is provided with a groove corresponding to the position of the sliding rail, and a locking bolt is installed in the middle of the sliding rail and is threadedly connected to the support, so that the sliding rail is pressed down by the locking bolt to lock the cylinder body.

[0021] Preferably, a sealing ring is arranged between the sliding rail and the groove.

[0022] Preferably, the switch assembly comprises:

[0023] A valve body is tightly connected to the bottom of the support;

[0024] A valve core is slidably arranged in the valve cavity of the valve body;

[0025] A plurality of first channels are arranged on the valve body, and two adjacent first channels are in communication with the same oil pipe;

[0026] A plurality of second channels are arranged on the valve core; when the second channels are aligned with the corresponding two first channels, the oil pipe is in a pass-through state, and when the second channels are misaligned with the corresponding two first channels, the oil pipe is in an off state;

[0027] A drive screw is threadedly connected to the valve body, one end of the drive screw in the valve body is rotationally connected to the valve core, and the drive screw is used to drive the valve core to move along the valve cavity of the valve body.

[0028] Preferably, a handle is installed at the end of the drive screw extending out of the valve body.

[0029] Preferably, legs are arranged on both sides of the bottom of the support.

[0030] Preferably, the middle part of the pressing plate is fixedly connected with the execution end of the corner cylinder, and adjustable supporting devices are installed on both sides of the corner cylinder; and the two ends of the pressing plate are threadedly connected with pressing screws.

[0031] By adopting the technical scheme, the utility model has the advantages of the following:

[0032] The utility model discloses simple structure, adjustable supporting device adopts the combination structure of slide rail, cylinder body, piston, reset spring and piston rod, can be self -adaptation different shape and specification's special -shaped work piece, need not frequently change special support seat, significantly reduce production cost.

[0033] In the processing, the piston and the piston rod can be self -adaptation under the action of reset spring and realize accurate positioning through the disconnection of the oil pipe, ensure the stability of the special -shaped work piece in the processing.

[0034] The switch assembly realizes accurate control to the on-off state of the oil pipe through the cooperation of the valve body and the valve core.

[0035] The compact design of the valve body and the valve core makes the switch assembly occupy less space while ensuring the function, and the structure is more compact.

[0036] The middle part of the pressing plate is fixedly connected with the execution end of the corner cylinder, and adjustable supporting devices are installed on both sides of the corner cylinder, so that the same corner cylinder can press two special-shaped work pieces at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is the structure schematic view of the utility model;

[0038] Figure 2 It is the side view of the utility model;

[0039] Figure 3 It is the structure schematic view of the slide rail;

[0040] Figure 4 Fig. 4 is a schematic view of the connection structure of the adjustable support device and the switch assembly;

[0041] Figure 5 Fig. 5 is a schematic view of the disconnection state structure of the valve body.

[0042] In the figure: 1, support; 2, corner cylinder; 3, pressing plate; 4, adjustable support device; 4-1, sliding rail; 4-2, cylinder body; 4-3, piston; 4-4, reset spring; 4-5, piston rod; 4-6, oil pipe; 4-7, locking bolt; 4-8, sealing ring; 5, switch assembly; 5-1, valve body; 5-2, valve core; 5-3, first channel; 5-4, second channel; 5-5, driving screw; 5-6, handle; 6, support leg; 7, pressing screw; 8, partition plate. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] In the description of the present application, it should be noted that the positions or location relationships indicated by the terms "upper", "lower", etc. are based on the positions or location relationships shown in the drawings, or the positions or location relationships of the product of the present application when it is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application.

[0045] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing", etc. should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be directly connected, or indirectly connected through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can understand the specific meanings of the above terms in the present application according to the specific circumstances. EMBODIMENT

[0046] In combination with the drawings Figures 1-4The application discloses a positioning device for milling special-shaped workpieces, which comprises a support 1, a rotary cylinder 2, a pressing plate 3 and an adjustable supporting device 4. The support 1 is firmly installed on the workbench of a machine tool as a basic component of the whole device and serves as a carrier and fixing component for other components. A plurality of rotary cylinders 2 are arranged in an array on the support 1, and the execution ends of the rotary cylinders 2 are respectively provided with the pressing plates 3. During the milling operation, the rotary cylinders 2 can drive the pressing plates 3 to rotate and press down, so that the special-shaped workpiece is firmly pressed. In particular, the plurality of rotary cylinders 2 can realize synchronous operation, so that the special-shaped workpiece can be pressed at the same time, and the operation efficiency is improved.

[0047] However, in actual processing, the surface to be processed of the special-shaped workpiece is a plane, but the supporting surface is a non-planar structure. Therefore, the special-shaped workpiece cannot be directly fixed on the workbench of the machine tool, and a transition supporting device matched with the special-shaped workpiece is needed to realize stable fixing. In mass production, a special profiling supporting seat is usually made, that is, a supporting seat matched with the shape of the supporting surface of the special-shaped workpiece is made. The special-shaped workpiece is pressed on the profiling supporting seat by rotating and pressing down the pressing plate 3 driven by the rotary cylinder 2, so as to realize fixing. The rotary cylinder 2 is a mature product, and only needs to be selected and purchased according to actual requirements, so the structure and working principle of the rotary cylinder 2 will not be described herein. Since the shapes of the supporting surfaces of special-shaped workpieces of different specifications are different, when the specifications and types are many and the production batch is small, the production cost will be greatly increased by making special profiling supporting seats. In addition, frequent replacement of the profiling supporting seats will also reduce the production efficiency, thereby affecting the efficiency of the whole production process.

[0048] In order to solve the problem, the adjustable supporting device 4 for supporting the special-shaped workpiece is ingeniously installed on one side of the rotary cylinder 2. By adjusting the horizontal position and the height position of the supporting component of the adjustable supporting device 4, different specifications of special-shaped workpieces can be flexibly adapted. Specifically, according to the characteristics of the supporting surface of the special-shaped workpiece, the horizontal position or the height position of the supporting component of the adjustable supporting device 4 is adjusted, so that the special-shaped workpiece is stably supported, and the limitation of the traditional fixing mode is effectively solved.

[0049] The adjustable support device 4 has several structural forms. One structure involves bolting the device onto a threaded sleeve on the support 1. A stud for supporting irregularly shaped workpieces is threadedly connected to the top of the threaded sleeve. Adjusting the position of the threaded sleeve changes the horizontal position of the entire adjustable support device 4; while turning the stud adjusts its height, thus adapting to workpieces of different specifications. This structure is simple and inexpensive, but it also has some drawbacks in practical use. The adjustment process is relatively cumbersome and requires a considerable amount of time for debugging, which can affect production efficiency to some extent. Therefore, this embodiment prioritizes another structure of the adjustable support device 4 to further optimize the device's performance.

[0050] Specifically, the adjustable support device 4 mainly consists of a slide rail 4-1, a cylinder 4-2, a piston 4-3, a return spring 4-4, and a piston rod 4-5. The slide rail 4-1 is firmly installed on the support 1, and its body is slidably connected to two cylinders 4-2. The cylinders 4-2 can slide freely along the slide rail 4-1, thereby realizing the adjustment of the horizontal position.

[0051] Specifically, as shown in the attached document Figure 2 As shown, the slide rail 4-1 has a dovetail-shaped structure. The support 1 has a groove corresponding to the position of the slide rail 4-1. A locking bolt 4-7 that is threadedly connected to the support 1 is installed in the middle of the slide rail 4-1. The cylinder 4-2 is locked by pressing down the slide rail 4-1 with the locking bolt 4-7. That is, by turning the locking bolt 4-7 down the slide rail 4-1, the slide rail 4-1 pulls the cylinder 4-2 down until the bottom of the cylinder 4-2 contacts the support 1. Thus, the position of the cylinder 4-2 can be positioned after the cylinder 4-2 is adjusted to the correct position.

[0052] Furthermore, a sealing ring 4-8 is provided between the slide rail 4-1 and the groove, which can effectively prevent the debris generated during milling operations from entering the groove of the support 1, thus preventing the slide rail 4-1 from moving down.

[0053] A piston 4-3 is slidably fitted inside the cylinder 4-2, and the piston 4-3 can move up and down along the cylinder 4-2. A return spring 4-4 ​​is installed between the bottom of the cylinder 4-2 and the piston 4-3, and its function is to drive the piston 4-3 to move upward and return to its original position. When no external force is applied, the return spring 4-4 ​​can cause the piston 4-3 to automatically move upward to the top position of the cylinder 4-2. A piston rod 4-5 with one end movably protruding from the top of the cylinder 4-2 is fastened to the top of the piston 4-3. The piston 4-3 can drive the piston rod 4-5 to perform corresponding actions, and the piston rod 4-5 directly supports the irregularly shaped workpiece, playing a crucial supporting role.

[0054] In addition, an oil pipe 4-6 is also installed between the top and bottom of the cylinder 4-2, one end of the oil pipe 4-6 is connected to the top of the cylinder 4-2, and the other end is connected to the bottom of the cylinder 4-2. The piston cavity corresponding to the top and bottom of the piston 4-3 in the cylinder 4-2 is filled with liquid medium, and the two piston cavities are connected through the oil pipe 4-6. When the piston 4-3 moves up, the liquid medium in the top piston cavity will flow into the bottom piston cavity along the oil pipe 4-6; conversely, when the piston 4-3 moves down, the liquid medium in the bottom piston cavity will flow into the top piston cavity along the oil pipe 4-6, thereby realizing the dynamic flow of the liquid medium between the two piston cavities and providing the necessary medium support for the movement of the piston 4-3.

[0055] At the bottom of the support 1, a switch assembly 5 is also installed, which mainly controls the on-off of the oil pipe 4-6. When the switch assembly 5 controls the oil pipe 4-6 to be disconnected, the liquid medium in the top and bottom piston cavities of the cylinder 4-2 cannot flow, and the piston 4-3 will not move, thereby realizing the precise positioning of the piston 4-3 and the piston rod 4-5, and ensuring the stability of the device during processing.

[0056] When adapting to special-shaped workpieces, first, the switch assembly 5 is used to make the oil pipe 4-6 in a connected state. At this time, the piston 4-3 and the piston rod 4-5 are driven by the reset spring 4-4 to move up to the top position of the cylinder 4-2. Then, the special-shaped workpiece is placed on the device and is pressed down, and the surface to be processed of the special-shaped workpiece is adjusted to be horizontal. In this process, the piston 4-3 and the piston rod 4-5 at both ends of the special-shaped workpiece will adaptively move downward according to the actual shape and position of the special-shaped workpiece, thereby realizing the preliminary support of the special-shaped workpiece. Finally, the switch assembly 5 is used to control the oil pipe 4-6 to be disconnected, at which time the piston 4-3 and the piston rod 4-5 are precisely positioned, thereby stably supporting the corresponding special-shaped workpiece and ensuring that it remains in a stable state during processing. This design can flexibly adapt to special-shaped workpieces of various specifications, effectively reducing production costs, while significantly improving production efficiency, and has important practical application value.

[0057] In addition, a partition plate 8 is installed at the top of the cylinder of the rotary angle cylinder 2 to prevent the special-shaped workpiece from accidentally falling into the gap between the rotary angle cylinder 2 and the adjustable support device 4; and the partition plate 8 is provided with openings corresponding to the positions of the actuating end of the rotary angle cylinder 2 and the support components of the adjustable support device 4, so that the actuating end of the rotary angle cylinder 2 and the support components of the adjustable support device 4 can pass through the partition plate 8 to clamp the special-shaped workpiece. Embodiment

[0058] In combination with the drawings Figures 4-5The positioning device for milling special-shaped parts is improved on the basis of the first embodiment. The switch assembly 5 comprises a valve body 5-1 and a valve core 5-2. The valve body 5-1 is firmly connected with the bottom of the support 1 by fasteners, and the inside of the valve body 5-1 is provided with a valve cavity, and the valve core 5-2 is slidably fitted in the valve cavity. A plurality of first channels 5-3 are formed in the valve body 5-1, the number of the first channels 5-3 matches the number of the adjustable supporting devices 4, and the two adjacent first channels 5-3 are respectively in communication with the two ends of the same oil pipe 4-6.

[0059] A plurality of second channels 5-4 are formed in the valve core 5-2. When the second channel 5-4 is aligned with the corresponding two first channels 5-3, the oil pipe 4-6 is in a pass-through state; when the second channel 5-4 is misaligned with the corresponding two first channels 5-3, the oil pipe 4-6 is in a cut-off state; and each oil pipe 4-6 is independent. By controlling the movement of the valve core 5-2, the alignment or misalignment of the second channel 5-4 and the first channel 5-3 can be realized, so as to control the connection or disconnection of the oil pipe 4-6.

[0060] The valve body 5-1 is threadedly connected with a drive screw 5-5, and one end of the drive screw 5-5 located in the valve body 5-1 is rotatably connected with the valve core 5-2. By screwing the drive screw 5-5, the valve core 5-2 can be driven to move along the valve cavity of the valve body 5-1, so as to control the on-off state of the oil pipe 4-6.

[0061] Further, one end of the drive screw 5-5 extending out of the valve body 5-1 is provided with a handle 5-6. The operator can conveniently screw the drive screw 5-5 through the handle 5-6, so as to control the movement of the valve core 5-2 and realize the adjustment of the on-off state of the oil pipe 4-6. Embodiment

[0062] The drawings are combined Figure 1 and 2 The positioning device for milling special-shaped parts is further optimized on the basis of the first or second embodiment. The support 1 is provided with support legs 6 on both sides of the bottom, and the support legs 6 are used to support the support 1, so as to avoid that the switch assembly 5 is subjected to additional force during use, prolong the service life of the switch assembly 5 and ensure the normal work of the switch assembly 5.

[0063] The middle part of the pressing plate 3 is firmly connected with the execution end of the rotary cylinder 2 through fasteners, so as to ensure that the pressing plate 3 can stably transmit the power of the rotary cylinder 2 during processing. The adjustable supporting devices 4 are installed on both sides of the rotary cylinder 2, and this layout enables the same rotary cylinder 2 to simultaneously press two special-shaped workpieces, which significantly improves the utilization rate of the equipment. At the same time, the pressing screws 7 are threadedly connected with both ends of the pressing plate 3, and the pressing screws 7 are used to press the special-shaped workpieces to the rotary cylinder 2, so as to ensure the stable transmission of the power of the rotary cylinder 2 to the special-shaped workpieces. Figure 2As shown, by screwing the pressing screw 7, the pressing effect of the pressing plate 3 on the special-shaped workpiece can be further enhanced, and the workpiece can be kept stable during the machining process. This design not only improves the clamping amount of the special-shaped workpiece, but also further improves the operation efficiency, and has obvious practical value.

[0064] In addition, the pressing screw 7 also plays an important role when adapting to special-shaped workpieces of different specifications, that is, the bottom protruding part of the pressing screw 7 can be shortened by screwing it first, thereby reducing the pressing amount of the special-shaped workpiece, at this time the adjustable supporting device 4 can be adjusted adaptively, and after adjustment, the bottom protruding part of the pressing screw 7 can be lengthened by screwing it, thereby ensuring the pressing of the special-shaped workpiece.

[0065] The part not described in detail of the utility model is the prior art, for those skilled in the art, obviously the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model, therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and all changes falling within the meaning and scope of equivalent elements are intended to be included in the utility model.

Claims

1. A positioning device for profile milling, characterized by, include: Support (1), installed on the worktable of the machine tool; Multiple corner cylinders (2) are arranged in an array on the support (1); The pressure plate (3) is installed on the actuating end of the rotary cylinder (2). The rotary cylinder (2) drives the pressure plate (3) to rotate and press down to clamp the irregular workpiece. An adjustable support device (4) is installed on one side of the corner cylinder (2) to support irregularly shaped workpieces. The horizontal and vertical positions of the support components of the adjustable support device (4) can be adjusted to adapt to irregularly shaped workpieces of different specifications. A partition (8) is installed on the top of the cylinder body of the rotary cylinder (2), and the partition (8) has openings at the positions of the actuator end of the rotary cylinder (2) and the support component of the adjustable support device (4); the adjustable support device (4) includes: The slide rail (4-1) is installed on the support (1); The bottoms of the two cylinders (4-2) are slidably connected to the slide rails (4-1); Piston (4-3) is installed inside cylinder (4-2); The return spring (4-4) is located between the bottom of the cylinder (4-2) and the piston (4-3), and is used to drive the piston (4-3) to move upward and reset. The piston rod (4-5) has one end fastened to the piston (4-3) and the other end movably passes through the top of the cylinder (4-2); Oil pipe (4-6), one end of which is connected to the top of cylinder (4-2), and the other end of which is connected to the bottom of cylinder (4-2); The switch assembly (5) is installed at the bottom of the support (1) and is used to control the on / off state of the oil circuit.

2. The positioning device for profile milling according to claim 1, characterized in that: The slide rail (4-1) has a dovetail structure. The support (1) has a groove corresponding to the position of the slide rail (4-1). A locking bolt (4-7) that is threadedly connected to the support (1) is installed in the middle of the slide rail (4-1). The cylinder (4-2) is locked by pressing down the slide rail (4-1) with the locking bolt (4-7).

3. The positioning device for profile milling according to claim 2, wherein: A sealing ring (4-8) is provided between the slide rail (4-1) and the groove.

4. The positioning device for profile milling according to claim 1, wherein The switching assembly (5) includes: The valve body (5-1) is fastened to the bottom of the support (1); The valve core (5-2) is slidably disposed within the valve cavity of the valve body (5-1); Multiple first channels (5-3) are provided on the valve body (5-1), and two adjacent first channels (5-3) are connected to the same oil pipe (4-6); Multiple second channels (5-4) are provided on the valve core (5-2); when the second channel (5-4) is aligned with the corresponding two first channels (5-3), the oil pipe (4-6) is in a closed state; when the second channel (5-4) is misaligned with the corresponding two first channels (5-3), the oil pipe (4-6) is in a closed state. The drive screw (5-5) is threadedly connected to the valve body (5-1). One end of the drive screw (5-5) located inside the valve body (5-1) is rotatably connected to the valve core (5-2) to drive the valve core (5-2) to move along the valve cavity of the valve body (5-1).

5. The positioning device for profile milling as recited in claim 4, wherein: A handle (5-6) is installed at one end of the drive screw (5-5) that extends out of the valve body (5-1).

6. The fixture of claim 1 wherein: The support (1) has legs (6) on both sides of its bottom.

7. The fixture of claim 1 wherein: The middle part of the pressing plate (3) is fastened and connected with the execution end of the corner cylinder (2), and the two sides of the corner cylinder (2) are both provided with adjustable supporting devices (4); the two ends of the pressing plate (3) are both threadedly connected with pressing screws (7).

Images