Clamping device and machining tool

Abstract

This application provides a clamping device and a machining tool. The clamping device includes: a positioning component, to which a model sample is fixed for machining; and a frame component assembled from a skeleton, the skeleton having multiple positioning holes. The frame component includes a base frame and a positioning frame. The positioning frame is positioned to the base frame by aligning its positioning holes with those of the base frame and is detachably connected to the base frame. The positioning component is detachably connected to the positioning frame via a pre-installed connector and a mating component that engages with the connector. The clamping device of this application, through the modular design and detachable connection of the positioning component and frame component, improves the flexibility and ease of assembly of the clamping device, facilitates the machining of different model samples, expands the clamping capability of the clamping device, and improves the machining accuracy of the model samples.

Description

Technical Field

[0001] This application relates to the field of sample processing equipment technology, specifically to a clamping device, and further to a machine tool including the clamping device. Background Technology

[0002] To meet the design and review requirements for automotive interiors and exteriors, highly realistic model prototypes are typically required. These prototypes consist of numerous model parts. The inventors recognized that automotive model parts are usually machined using a five-axis machining center, and to meet the high precision requirements of these parts, further improvements to the clamping mechanism are needed. Summary of the Invention

[0003] This application aims to provide a clamping device and a machine tool including the clamping device to solve or alleviate at least some of the problems mentioned in the background art.

[0004] To achieve one of the aforementioned objectives, according to one aspect of this application, a clamping device is provided, the clamping device comprising: a positioning component, to which a model sample is fixed for processing; and a frame assembly assembled from a skeleton, the skeleton having a plurality of positioning holes; the frame assembly comprising a base frame and a positioning frame, the positioning frame being positioned to the base frame by aligning the positioning holes of the positioning frame with the positioning holes of the base frame and being detachably connected to the base frame; the positioning component being detachably connected to the positioning frame via a connector pre-installed therein and a mating member cooperating with the connector.

[0005] In addition to one or more of the features described above, or as an alternative, in another embodiment, the positioning component includes a polyurethane plate fixedly connected to the model sample, and a connecting plate fixedly connected to the polyurethane plate, wherein the connecting plate has the connecting member pre-installed.

[0006] In addition to one or more of the features described above, or as an alternative, in another embodiment, the connector is a reverse nut; and the mating element is a bolt that passes through the positioning hole of the positioning frame and mates with the reverse nut.

[0007] In addition to one or more of the features described above, or as an alternative, in another embodiment, the connecting plate is further provided with a positioning pin that extends from the connecting plate toward the positioning frame to engage with the positioning hole of the positioning frame.

[0008] In addition to one or more of the features described above, or as an alternative, in another embodiment, the skeleton is a hollow tube with a rectangular cross-section, the plurality of positioning holes being evenly distributed in an array through the sidewalls of the tube, and the positioning holes on opposite sidewalls being aligned accordingly; the positioning frame is detachably connected to the base frame via a locking mechanism passing through the positioning holes aligned with the base frame.

[0009] In addition to one or more of the features described above, or as an alternative, in another embodiment, the locking mechanism includes a locking member passing through a positioning hole aligned with the base frame, and two locking tubes that rotate and lock one end of the locking member toward the positioning frame and the other end toward the base frame to the positioning frame and the base frame, respectively.

[0010] In addition to one or more of the features described above, or as an alternative, in another embodiment, the locking member includes a cylindrical snap-fit ​​portion, two locking pins extending from two end faces of the snap-fit ​​portion away from the snap-fit ​​portion, and two locking heads disposed at the ends of the two locking pins, the outer diameter of the locking heads being larger than the outer diameter of the locking pins; the locking tube includes a sliding groove extending axially from its end and a locking groove extending circumferentially from one end of the sliding groove away from the end, the size of the sliding groove being adapted to the locking head and the size of the locking groove being adapted to the locking pin; the locking head is inserted into the sliding groove axially along the locking tube and slides relative to the sliding groove such that the locking pin is aligned with the locking groove, the locking tube is rotated circumferentially such that the locking pin slides relative to the locking groove and locks the locking head axially along the locking tube.

[0011] In addition to one or more of the features described above, or as an alternative, in another embodiment, the locking tube connected to the positioning frame passes through two corresponding positioning holes on opposite sidewalls of the positioning frame skeleton, and the locking tube connected to the base frame passes through two corresponding positioning holes on opposite sidewalls of the base frame skeleton.

[0012] In addition to one or more of the features described above, or as an alternative, in another embodiment, the clamping device includes one or more of the positioning frames disposed on the base frame and one or more positioning components detachably connected to the one or more of the positioning frames.

[0013] To achieve one of the aforementioned objectives, according to another aspect of this application, a machine tool is provided, the machine tool including the clamping device described in the foregoing aspect.

[0014] According to the clamping device and machining tool of this application, the modular design and detachable connection of the positioning component and frame component improve the flexibility and ease of assembly of the clamping device, facilitate the processing of different model samples, expand the clamping capability of the clamping device, and improve the processing accuracy of the model samples. Attached Figure Description

[0015] The disclosure of this application will be more readily understood with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0016] In the picture:

[0017] Figure 1 This is a schematic diagram of a clamping device according to one embodiment of the present application;

[0018] Figure 2 yes Figure 1 An exploded three-dimensional diagram of the clamping device;

[0019] Figure 3 yes Figure 1 Exploded side view of the clamping device in the diagram;

[0020] Figure 4 It has a model sample installed. Figure 1 A schematic diagram of the clamping device;

[0021] Figure 5 It has two model samples installed. Figure 1 A schematic diagram of a clamping device, which includes two positioning components;

[0022] Figure 6 yes Figure 4 An exploded view of a positioning component and a model sample; and

[0023] Figure 7 yes Figure 1 An exploded view of the locking mechanism. Detailed Implementation

[0024] The present application will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of the present application more complete and clear, and to fully convey the concept of the present application to those skilled in the art.

[0025] Furthermore, for any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the accompanying drawings, those skilled in the art will readily conceive of appropriate combinations or deletions among these technical features (or their equivalents), thereby obtaining more other embodiments of this application that may not be directly mentioned herein, which do not depart from the technical concept of this application.

[0026] Figure 1 This is a schematic diagram of a clamping device 10 according to one embodiment of this application. Figure 2 yes Figure 1 An exploded perspective view of the clamping device 10 in the middle. Figure 3 yes Figure 1 The diagram shows an exploded side view of the clamping device 10. It can be seen that the clamping device 10 mainly includes a positioning component 100 and a frame assembly 200. The positioning component 100 is used to fix (e.g., by adhesive bonding or bolt connection) the model sample to be processed, and the frame assembly 200 is used to position and support the positioning component 100. The positioning component 100 may include a polyurethane plate 110 fixedly connected to the model sample, and a connecting plate 120 fixedly connected to the polyurethane plate 110, with a pre-installed connector 121 in the connecting plate 120. The frame assembly 200 is assembled from multiple skeletons 201, each skeleton 201 having multiple positioning holes 2011 evenly distributed throughout the skeletons 201. The frame assembly 200 includes a base frame 210 and a positioning frame 220. The positioning frame 220 is positioned to the base frame 210 by aligning the positioning holes 2011 on its skeleton with the positioning holes 2011 on the skeleton of the base frame 210, and is detachably connected to the base frame 210 via a locking mechanism 230. The positioning component 100 is detachably connected to the positioning frame 220 via a connector 121 pre-installed therein and a mating member (not shown) that mates with the connector 121.

[0027] In this arrangement, the clamping device described in this paper, through the modular design and detachable connection of the positioning components and frame components, improves the flexibility and ease of assembly of the clamping device, facilitates the processing of different model samples, expands the clamping capacity of the clamping device, and enhances the processing accuracy and efficiency of the machine tools that include this clamping device. Furthermore, the skeleton structure of the frame component with multiple positioning holes improves the positioning accuracy of the clamping device, with a positioning error of less than 0.02mm, ensuring the five-axis machining accuracy of the model samples and improving the manufacturing quality of the model samples.

[0028] The following will describe, through exemplary illustration, a further detailed or improved process of the clamping device, in order to further improve its efficiency, reliability, or for other improvements.

[0029] See Figure 2-3 The connecting plate 120 can be a wooden board, which is bonded to the polyurethane board 110 with adhesive. The connecting member 121 is a reverse nut (not shown), such as an M10 / 8.8 grade high-strength reverse nut, which is embedded in the wooden board, and the mating member is a bolt, such as an M10 / 8.8 grade bolt, which passes through the positioning hole 2011 of the positioning frame 220 and engages with the reverse nut to detachably connect the positioning assembly 100 to the positioning frame 220. In a preferred embodiment, the connecting plate 120 is also pre-set with positioning pins (e.g., 20 mm in diameter), which extend from the connecting plate 120 toward the positioning frame 220 to engage with the positioning hole 2011 of the positioning frame 220 for positioning, thereby improving the positioning accuracy of the positioning assembly 100 to the positioning frame 220. There can be one or more positioning pins. In addition, the polyurethane board 110 can be ground flat by cutting or other means before installing the model sample to offset the settlement error caused by the settlement of the machining tool where the clamping device 10 is located, so that the machining platform remains level, thereby reducing machining errors. In other embodiments, the polyurethane board 110 can be replaced with a positioning plate made of other suitable materials.

[0030] In an optional implementation, the base frame 210 can be designed as a large rectangular frame to accommodate multiple positioning frames 220 and multiple positioning components 100 that match the shape and size of the positioning frames 220. This facilitates the simultaneous processing of multiple model samples, or allows the multiple positioning components 100 to be assembled into a larger processing platform, facilitating the processing of larger model samples, thus giving the clamping device 10 wide applicability. For example... Figure 4 The image shows a B-pillar model sample 330 of a vehicle, which is positioned via two positioning components 100 joined together. Furthermore, the relative positional relationships between multiple model samples can be calculated using the dimensions of the frame 201 (e.g., the size and spacing of the positioning holes 2011), thereby facilitating the simultaneous processing of multiple model samples and improving processing accuracy and efficiency.

[0031] like Figure 5 As shown, the positioning component 100 can be designed not only as a plate (e.g., polyurethane plate 110 and connecting plate 120), but also as a positioning mold block 130 that matches the structure of the model sample. For example, the dedicated positioning mold block 130 connected to the rearview mirror sample 310 shown in the figure can include a polyurethane block with a groove 131. The positioning frame 220 that cooperates with it can be multiple skeletons 201 stacked vertically (e.g., three shown in the figure). The connecting portion 311 of the rearview mirror sample 310 is inserted into the groove 131 of the polyurethane block and fixed by bolts. Figure 6An exploded view of the rearview mirror prototype 310 and its positioning mold block 130 is shown. The connecting portion 311 of the rearview mirror prototype 310 has threaded holes (e.g., two holes at the top) for mounting bolts and pin holes (e.g., one hole at the bottom) for mounting positioning pins. The polyurethane block can be connected to the positioning frame 220 via a connecting plate and pre-installed connectors, similar to the polyurethane plate 110, or a connector 121 (which can be a pre-embedded reverse nut or an integrally formed threaded hole) can be directly pre-installed on it to connect to the positioning frame 220. The functionality of the clamping device 10 can be further expanded through the dedicated design of the positioning assembly 100 for specific model prototypes. For example, in... Figure 5 In this setup, the plate-type positioning assembly 100 for, for example, the steering wheel sample 320, can be positioned and used together with the dedicated positioning mold block 130 for, for example, the rearview mirror sample 310, thereby improving the working efficiency of the clamping device 10. The relative positional relationship between the steering wheel sample 320 and the rearview mirror sample 310 can also be calculated using the dimensions of the frame assembly 200 to improve the convenience and accuracy of positioning.

[0032] In a more specific implementation, such as Figure 1-6 As shown, the skeleton 201 is a hollow tube with a rectangular (e.g., square) cross-section. Multiple positioning holes 2011 are evenly distributed on the sidewalls of the tube in an array, penetrating the sidewalls. The positioning holes 2011 on opposite sidewalls are aligned to facilitate the insertion of the locking mechanism 230 mentioned below. The skeleton 201 can be, for example, a high-precision aerospace aluminum alloy skeleton with a positioning accuracy of 0.02 mm and the ability to withstand shear forces of approximately 640 MPa or higher. The positioning frame 220 is detachably connected to the base frame 210 via the locking mechanism 230, which passes through the aligned positioning holes 2011 of the positioning frame 220 and the base frame 210. Furthermore, the skeleton 201 of the positioning frame 220 and the base frame 210 can also be quickly assembled using this locking mechanism 230. Specifically, the locking mechanism 230 may include a locking member 231 passing through a positioning hole 2011 aligned with the positioning frame 220 and the base frame 210, and two locking tubes 232 that rotate and lock the locking member 231 at one end facing the positioning frame 220 and the other end facing the base frame 210 to the positioning frame 220 and the base frame 210, respectively. Figure 7As shown, the locking member 231 includes a cylindrical engaging portion 2311, two locking pins 2312 extending from the two end faces of the engaging portion 2311 away from the engaging portion 2311, and two locking heads 2313 respectively disposed at the ends of the two locking pins 2312. The outer diameter of the engaging portion 2311 matches the diameter of the positioning hole 2011 and is larger than the outer diameter of the locking pins 2312, and the outer diameter of the locking heads 2313 is larger than the outer diameter of the locking pins 2312. The locking tube 232 includes a sliding groove 2321 extending axially from its end and a locking groove 2322 extending circumferentially from one end of the sliding groove 2321 away from that end. The size of the sliding groove 2321 is adapted to the locking heads 2313, and the size of the locking groove 2322 is adapted to the locking pins 2312. The locking head 2313 is inserted axially into the sliding groove 2321 and slides relative to it along the sliding groove 2321, aligning the locking pin 2312 with the locking groove 2322. Then, the locking tube 232 can rotate circumferentially to allow the locking pin 2312 to slide relative to it along the locking groove 2322, locking the locking head 2313 axially along the locking tube 232. The axial direction of the locking tube 232 is perpendicular to the axial direction of the locking member 231, and the arrangement direction of the two locking tubes 232 can vary depending on the arrangement orientation of the two interconnected skeletons 201, for example, they can be parallel or perpendicular. The relative rotational locking of the locking member 231 and the locking tube 232 can be achieved via a locking rod 233, which can be, for example, a bent rod with a hexagonal cross-section. The end of the locking tube 232 opposite to the sliding groove 2321 is provided with a hexagonal hole 2323 that matches the bent rod. The locking tube 232 connected to the positioning frame 220 passes through two corresponding positioning holes 2011 on opposite side walls of the skeleton 201 of the positioning frame 220, and the locking tube 232 connected to the base frame 210 passes through two corresponding positioning holes 2011 on opposite side walls of the skeleton 201 of the base frame 210. Furthermore, as... Figure 3 As shown, a high-precision locking pin 240 can also be provided between the positioning frame 220 and the base frame 210 to assist in positioning and improve positioning accuracy. Through the locking mechanism 230 of this application, the frame assembly 200 can be quickly assembled and deformed, and the positioning frame 220 and the base frame 210 can be quickly locked, improving the assembly and replacement efficiency of the clamping device 10, and thus improving the processing efficiency of the machine tool used to process the model sample.

[0033] The above examples primarily illustrate the clamping device of this application and the machine tool including the clamping device. Although only some embodiments of this application have been described, those skilled in the art should understand that this application can be implemented in many other forms without departing from its spirit and scope. Therefore, the examples and embodiments shown are considered illustrative rather than restrictive, and this application may cover various modifications and substitutions without departing from the spirit and scope of the technical solution of this application.

Claims

1. A clamping device, characterized in that, The clamping device includes: A positioning component, to which the model sample is fixed for processing, and A frame assembly, which is assembled from a skeleton having multiple positioning holes, includes a base frame and a positioning frame. The positioning frame is positioned to the base frame and detachably connected to the base frame by aligning its positioning holes with the positioning holes of the base frame. The positioning component is detachably connected to the positioning frame via a connector pre-installed therein and a mating component that mates with the connector. The positioning frame is detachably connected to the base frame via a locking mechanism through a positioning hole aligned with the base frame. The locking mechanism includes a locking member that passes through a positioning hole aligned with the positioning frame and the base frame, and two locking tubes that rotate and lock one end of the locking member facing the positioning frame and the other end facing the base frame to the positioning frame and the base frame, respectively. The locking component includes a cylindrical latching portion, two locking pins extending from the two end faces of the latching portion away from the latching portion, and two locking heads respectively disposed at the ends of the two locking pins, wherein the outer diameter of the locking head is larger than the outer diameter of the locking pin; The locking tube includes a sliding groove extending axially from its end and a locking groove extending circumferentially from one end of the sliding groove opposite to the end, the sliding groove being sized to fit the locking head and the locking groove being sized to fit the locking pin. The locking head is inserted axially into the sliding groove and slides relative to the sliding groove so that the locking pin is aligned with the locking groove. The locking tube rotates circumferentially so that the locking pin slides relative to the locking groove and locks the locking head axially along the locking tube.

2. The clamping device according to claim 1, characterized in that, The positioning component includes a polyurethane plate fixedly connected to the model sample, and a connecting plate fixedly connected to the polyurethane plate, wherein the connecting plate has the connecting member pre-installed.

3. The clamping device according to claim 2, characterized in that, The connector is a reverse-thread nut; and the mating component is a bolt that passes through the positioning hole of the positioning frame and mates with the reverse-thread nut.

4. The clamping device according to claim 2 or 3, characterized in that, The connecting plate is also equipped with a positioning pin, which extends from the connecting plate toward the positioning frame to engage with the positioning hole of the positioning frame.

5. The clamping device according to any one of claims 1-3, characterized in that, The skeleton is a hollow tube with a rectangular cross-section. The plurality of positioning holes are evenly distributed on the sidewall of the tube in an array, penetrating the sidewall of the tube, and the positioning holes on the opposite sidewalls are aligned accordingly.

6. The clamping device according to claim 1, characterized in that, The locking tube connected to the positioning frame passes through two corresponding positioning holes on opposite side walls of the positioning frame skeleton, and the locking tube connected to the base frame passes through two corresponding positioning holes on opposite side walls of the base frame skeleton.

7. The clamping device according to any one of claims 1-3, characterized in that, The clamping device includes one or more positioning frames disposed on the base frame and one or more positioning components detachably connected to the one or more positioning frames.

8. A processing machine tool, characterized in that, The machine tool includes a clamping device according to any one of claims 1-7.

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