Milling and clamping device of multi-axis machining center
By designing a multi-axis machining center milling clamping device with adjustable bolt vertical position, the problem that existing devices cannot adapt to workpieces of different sizes is solved, enabling flexible adjustment and multi-directional clamping, and improving the stability and adaptability of workpiece clamping.
Patent Information
- Application Number
- CN202520230725.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Existing multi-axis machining center milling clamping devices cannot be adaptively adjusted according to the size of the workpiece, resulting in the bolt position not being able to contact the side surface of the workpiece in the appropriate position, and thus failing to effectively clamp small workpieces.
A milling clamping device for a multi-axis machining center was designed. By setting up a structure that can adjust the vertical position of the bolt, including clamping components and adjusting parts, and using a combination of lifting blocks, bolts, moving blocks, moving columns, clamping plates, extension plates, winding wheels and pull ropes, the bolt can be flexibly adjusted and clamped in multiple directions, ensuring that the bolt end face is in contact with the side surface of the workpiece.
It enables flexible adjustment according to workpieces of different sizes, ensuring that the bolts are in contact with the side surface of the workpiece in the appropriate position, improving the adaptability and clamping stability of workpieces of different sizes, and ensuring the smooth progress of the milling process.
Smart Images
Figure CN223617270U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of milling clamping technology, and in particular to a milling clamping device for multi-axis machining centers. Background Technology
[0002] In milling processes, existing four-axis machining clamping units typically fix the workpiece by first aligning the workpiece positioning hole with the fixture positioning hole, then inserting a positioning pin, followed by the use of multiple bolts. Tightening the bolts brings the bolt end face into contact with the workpiece side surface, thus clamping and fixing the workpiece. However, because the vertical position of the bolts cannot be adjusted, it is impossible to effectively clamp workpieces of different heights at the appropriate position. When dealing with small workpieces, the bolt position may extend beyond the workpiece end face, making effective clamping impossible. Utility Model Content
[0003] In view of the problems existing in the above and / or existing multi-axis machining center milling clamping devices, this utility model is proposed.
[0004] Therefore, the problem that this utility model aims to solve is that the clamping position in milling operations cannot be adaptively adjusted according to the size of the workpiece.
[0005] To solve the above technical problems, this utility model provides the following technical solution: a multi-axis machining center milling clamping device, which includes a main body component, including a base, a platform and a workpiece, wherein the platform is fixed on the base and the workpiece is disposed on the platform;
[0006] A clamping assembly, disposed on both sides of the workpiece, includes clamping components. Each clamping component includes a lifting block, a bolt, a moving block, a moving column, a clamping plate, an extension plate, a winding reel, and a pull rope. The lifting block is located on one side of the workpiece and has a threaded hole. The bolt is inserted into the threaded hole. The moving block is bearing-connected to one end of the bolt. The moving block has a cylindrical groove, and the moving column slides within the cylindrical groove. The clamping plate is disposed on one side of the workpiece. The extension plate is fixed to the clamping plate. The winding reel is sleeved around the moving column. The pull rope is wound around the winding reel, and the other end of the pull rope is fixed to the extension plate.
[0007] As a preferred embodiment of the multi-axis machining center milling clamping device of this utility model, the moving column is provided with a spiral groove, and a locking block is fixed inside the winding wheel, the locking block sliding in the spiral groove.
[0008] As a preferred embodiment of the multi-axis machining center milling clamping device of this utility model, the clamping assembly further includes an adjusting component disposed on one side of the lifting block, including a fixed block, a locking block and a first spring. The fixed block is fixed on the platform, and the fixed block has a sliding groove. The lifting block slides in the sliding groove. The lifting block has a moving groove, and the locking block slides in the moving groove. The first spring is fixed to one end of the locking block, and the other end is fixed to the inner wall of the moving groove.
[0009] As a preferred embodiment of the multi-axis machining center milling clamping device of this utility model, the fixing block is provided with a locking groove, and the locking block can engage with the locking groove.
[0010] As a preferred embodiment of the multi-axis machining center milling clamping device of this utility model, the number of locking slots is multiple.
[0011] As a preferred embodiment of the multi-axis machining center milling clamping device of this utility model, a second spring is fixed on one side of the moving column, and the other end of the second spring is fixed to the inner wall of the cylindrical groove.
[0012] As a preferred embodiment of the multi-axis machining center milling clamping device of this utility model, a third spring is fixed on one side of the extension plate.
[0013] As a preferred embodiment of the multi-axis machining center milling clamping device of this utility model, a push plate is fixed on one side of the locking block.
[0014] In a preferred embodiment of the multi-axis machining center milling clamping device of this utility model, the fixing block is fixed with a support plate.
[0015] In a preferred embodiment of the multi-axis machining center milling clamping device of this utility model, a positioning block is fixed on the platform, and a positioning pin is inserted into the positioning block.
[0016] The beneficial effects of this utility model are as follows: the structure with adjustable bolt vertical position can flexibly adjust the vertical height of the bolt according to workpieces of different sizes, ensuring that the bolt can always contact the side surface of the workpiece in a suitable position, improving the adaptability of the four-axis machining clamping seat to workpieces of different sizes. When the bolt end face approaches the workpiece, the side clamping plate will simultaneously approach the workpiece, thereby forming a multi-directional clamping force, further improving the stability of workpiece clamping. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0018] Figure 1 This is an overall structural diagram of the milling clamping device for a multi-axis machining center.
[0019] Figure 2 This is a structural diagram of the moving block of the milling clamping device for a multi-axis machining center.
[0020] Figure 3 A cross-sectional view of the lifting block of the milling clamping device for a multi-axis machining center.
[0021] Figure 4 Milling clamping device for multi-axis machining centers Figure 3 Enlarged view of the structure at point A in the middle.
[0022] Figure 5 Milling clamping device for multi-axis machining centers Figure 3 Enlarged view of the structure at point B in the middle.
[0023] Figure 6 Milling clamping device for multi-axis machining centers Figure 3 Enlarged view of the structure at point C. Detailed Implementation
[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0026] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0027] Example 1
[0028] Reference Figures 1-6This is the first embodiment of the present utility model. This embodiment provides a multi-axis machining center milling clamping device. The multi-axis machining center milling clamping device includes a main body component 100, including a base 101, a platform 102 and a workpiece 103. The platform 102 is fixed on the base 101 and the workpiece 103 is disposed on the platform 102.
[0029] The base 101 and platform 102 provide stable support for the entire clamping seat. The workpiece 103 is placed on the platform 102. First, the large hole on the front of the workpiece 103 is processed. Then, the base 101 is rotated 90 degrees to process the small hole on the side of the workpiece 103. This is the prior art, and this solution will not be described in detail. Moreover, those skilled in the art can clearly understand the working principle.
[0030] The clamping assembly 200 is disposed on both sides of the workpiece 103 and includes a clamping member 201. The clamping member 201 includes a lifting block 201a, a bolt 201b, a moving block 201c, a moving column 201d, a clamping plate 201e, an extension plate 201f, a winding wheel 201g, and a pull rope 201h. The lifting block 201a is located on one side of the workpiece 103, and a threaded hole 201a-1 is opened in the lifting block 201a. The bolt 201b is inserted into the threaded hole 201a-1. The movable block 201c is connected to one end of the bolt 201b by a bearing. The movable block 201c has a cylindrical groove 201c-1. The movable column 201d slides in the cylindrical groove 201c-1. The clamping plate 201e is set on one side of the workpiece 103. The extension plate 201f is fixed on the clamping plate 201e. The winding wheel 201g is sleeved on the outside of the movable column 201d. The pull rope 201h is wound on the winding wheel 201g. The other end of the pull rope 201h is fixed to the extension plate 201f.
[0031] The clamping member 201 is provided to provide stable clamping for the workpiece 103, thereby ensuring that milling can be completed smoothly. There are two sets of clamping members 201, which are symmetrically distributed on both sides of the workpiece 103.
[0032] By engaging the bolt 201b with the threaded hole 201a-1, rotating the bolt 201b will cause the end face of the bolt 201b to move closer to the workpiece 103, thereby driving the moving block 201c to move towards the workpiece 103. In the initial state, the end face of the moving column 201d protrudes from the end face of the moving block 201c by a certain distance. As the moving block 201c moves, the moving column 201d will first contact the workpiece 103, thereby causing the moving column 201d to slide along the cylindrical groove 201c-1 until the end face of the moving block 201c and the end face of the moving column 201d simultaneously contact the surface of the workpiece 103. During this process, the winding wheel 201g will rotate, thereby winding the pull rope 201h, which in turn causes the extension plate 201f to drive the clamping plate 201e to move closer to the workpiece 103 until it is in complete contact with the workpiece 103.
[0033] Example 2
[0034] Reference Figures 1-6 This is the second embodiment of the present invention, which is based on the previous embodiment.
[0035] Specifically, a spiral groove 201d-1 is provided on the movable column 201d, and a locking block 201i is fixed inside the winding wheel 201g, which slides within the spiral groove 201d-1.
[0036] With the cooperation of the spiral groove 201d-1 and the locking block 201i, when the moving column 201d slides along the cylindrical groove 201c-1, the locking block 201i will slide in the spiral groove 201d-1, thereby causing the winding wheel 201g to rotate, which in turn increases the length of the pull rope 201h wound on the winding wheel 201g, thereby pulling the extension plate 201f and the clamping plate 201e closer to the workpiece 103.
[0037] The pull rope 201h has a certain degree of elasticity. When the clamping plate 201e is in contact with the surface of the workpiece 103, if the moving block 201c has not yet contacted the workpiece 103, the winding wheel 201g will continue to rotate. Since the pull rope 201h is elastic, it can be stretched, so it will not hinder the rotation of the winding wheel 201g. At the same time, after the pull rope 201h is stretched, it will also apply a pulling force to the extension plate 201f, making the clamping plate 201e fit more tightly with the workpiece 103 and improving the stability of clamping.
[0038] Specifically, the clamping assembly 200 also includes an adjusting component 202, which is disposed on one side of the lifting block 201a. It includes a fixing block 202a, a locking block 202b, and a first spring 202c. The fixing block 202a is fixed on the platform 102. The fixing block 202a has a sliding groove 202a-1. The lifting block 201a slides in the sliding groove 202a-1. The lifting block 201a has a moving groove 201a-2. The locking block 202b slides in the moving groove 201a-2. The first spring 202c is fixed to one end of the locking block 202b, and the other end is fixed to the inner wall of the moving groove 201a-2.
[0039] The adjusting member 202 is used to adjust the vertical position of the lifting block 201a to accommodate workpieces 103 of different sizes. The first spring 202c applies a continuous pushing force to the locking block 202b, which is rectangular in shape.
[0040] Two lifting blocks 201a are set on a fixed block 202a. After the adjustment is completed, four moving blocks 201c and eight clamping plates 201e will work together from different positions to clamp the workpiece 103, thereby improving the clamping stability.
[0041] Since the two lifting blocks 201a can slide freely in the sliding groove 202a-1, and the lifting block 201a is relatively wide, it will not affect the machining of small holes on the side of the workpiece 103.
[0042] Specifically, a locking groove 202a-2 is provided on the fixing block 202a, and the locking block 202b can engage with the locking groove 202a-2.
[0043] With the cooperation of locking block 202b and locking groove 202a-2, when lifting block 201a slides in sliding groove 202a-1, when locking block 202b is in a coaxial position with locking groove 202a-2 as lifting block 201a moves, under the push of first spring 202c, locking block 202b will engage with locking groove 202a-2, and at this time the relative position of lifting block 201a and sliding groove 202a-1 will be locked.
[0044] Two locking blocks 202b are symmetrically arranged on a lifting block 201a. When both locking blocks 202b are engaged with the locking groove 202a-2, the position of the lifting block 201a will not shift, thereby locking the vertical position of the bolt 201b and ensuring that the position of the bolt 201b will not change during the milling process.
[0045] Specifically, there are multiple locking slots 202a-2.
[0046] The shape of the locking groove 202a-2 corresponds to the locking block 202b. By setting multiple locking grooves 202a-2, when the lifting block 201a slides along the sliding groove 202a-1, it can always find a suitable locking groove 202a-2 to correspond with the locking block 202b and complete the engagement. This allows the position of the lifting block 201a to adapt to workpieces 103 of different sizes and provide them with a stable clamping force.
[0047] Specifically, a second spring 201j is fixed on one side of the movable column 201d, and the other end of the second spring 201j is fixed to the inner wall of the cylindrical groove 201c-1.
[0048] The second spring 201j applies continuous pressure to the moving column 201d. When the rotating bolt 201b drives the moving column 201d closer to the workpiece 103, the workpiece 103 will then squeeze it, thereby compressing the second spring 201j. After the bolt 201b is rotated in the opposite direction, the moving block 201c will gradually move away from the workpiece 103, and the second spring 201j will also gradually extend and retract to its initial state, thereby driving the moving column 201d back to its initial position.
[0049] Example 3
[0050] Reference Figures 1-6 This is the third embodiment of the present invention, which is based on the first two embodiments.
[0051] Specifically, a third spring 201k is fixed to one side of the extension plate 201f.
[0052] The third spring 201k is used to reset the extension plate 201f. When the rotating bolt 201b drives the moving column 201d to approach the workpiece 103 and drives the winding wheel 201g to wind up, the third spring 201k will be compressed. After the bolt 201b is rotated in the opposite direction, the third spring 201k will return to its initial state, thereby driving the extension plate 201f to move in the opposite direction, which in turn drives the clamping plate 201e to separate from the surface of the workpiece 103, and causes the extension plate 201f and the clamping plate 201e to return to their initial positions.
[0053] Specifically, a push plate 202d is fixed on one side of the locking block 202b.
[0054] The push plate 202d is set to unlock the engagement between the locking block 202b and the locking groove 202a-2. When it is necessary to adjust the position of the lifting block 201a, push the push plate 202d to compress the first spring 202c. The locking block 202b will move away from the locking groove 202a-2. After the two are completely separated, the lifting block 201a can slide again in the sliding groove 202a-1.
[0055] Specifically, the fixing block 202a is fixed with the support plate 202e.
[0056] There are two sets of support plates 202e, with two support plates 202e in each set. The bottom of the support plate 202e is fixed to the platform 102 to reinforce the support of the fixing block 202a.
[0057] Specifically, a positioning block 104 is fixed on the platform 102, and a positioning pin 105 is inserted into the positioning block 104.
[0058] The positioning block 104 and the workpiece 103 are provided with positioning holes corresponding to the positioning pin 105. When the workpiece 103 is placed on the platform 102, it is necessary to ensure that the workpiece 103 is aligned with the positioning hole of the positioning block 104, and then the positioning pin 105 is inserted into it. This is the prior art, and this solution will not be described in detail. Moreover, those skilled in the art can clearly understand the working principle.
[0059] In use, after placing the workpiece 103 on the platform 102, push the push plate 202d to compress the first spring 202c. The locking block 202b will move away from the locking groove 202a-2. When the two are completely separated, the lifting block 201a can slide again in the sliding groove 202a-1. Adjust the position of the lifting block 201a to adapt to the height of the workpiece 103. Then release the push plate 202d and hold the lifting block 201a by hand. When the locking block 202b is in a coaxial position with the locking groove 202a-2 as the lifting block 201a moves, the locking block 202b will engage with the locking groove 202a-2 under the push of the first spring 202c. At this time, the relative position of the lifting block 201a and the sliding groove 202a-1 will be locked. Slightly push the lifting block 201a to ensure that the locking block 202b is fully engaged with the locking groove 202a-2 before releasing the lifting block 201a.
[0060] Rotating bolt 201b will cause the end face of bolt 201b to move closer to workpiece 103, thereby driving moving block 201c to move towards workpiece 103. Moving column 201d will first contact workpiece 103, thereby causing moving column 201d to slide along cylindrical groove 201c-1. Clamping block 201i will slide in spiral groove 201d-1, thereby causing take-up wheel 201g to rotate, which in turn increases the length of pull rope 201h wound on take-up wheel 201g, thereby pulling extension plate 201f and clamping plate 201e closer to workpiece 103 and tightly fitting against the surface of workpiece 103. Continuing to rotate bolt 201b will cause the end face of moving block 201c and the end face of moving column 201d to simultaneously contact the surface of workpiece 103, at which point the clamping operation is completed.
[0061] After the milling is completed, the reverse rotating bolt 201b will cause the moving block 201c to gradually move away from the workpiece 103. The second spring 201j will also gradually extend and retract to its initial state, thereby driving the moving column 201d back to its initial position. The third spring 201k will return to its initial state, driving the extension plate 201f to move in the opposite direction and causing the extension plate 201f and the clamping plate 201e to return to their initial positions, thereby moving the moving column 201d and the clamping plate 201e away from the workpiece 103 so that the machined workpiece 103 can be removed.
[0062] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A milling clamping device for a multi-axis machining center, characterized in that: include, The main component (100) includes a base (101), a platform (102), and a workpiece (103), wherein the platform (102) is fixed on the base (101), and the workpiece (103) is disposed on the platform (102); A clamping assembly (200) is disposed on both sides of the workpiece (103) and includes a clamping member (201). The clamping member (201) includes a lifting block (201a), a bolt (201b), a moving block (201c), a moving column (201d), a clamping plate (201e), an extension plate (201f), a winding wheel (201g), and a pull rope (201h). The lifting block (201a) is located on one side of the workpiece (103). A threaded hole (201a-1) is opened in the lifting block (201a), and the bolt (201b) is inserted into the threaded hole (201a-1). The moving block... (201c) is connected to one end of the bolt (201b) by a bearing. The moving block (201c) has a cylindrical groove (201c-1). The moving column (201d) slides in the cylindrical groove (201c-1). The clamping plate (201e) is disposed on one side of the workpiece (103). The extension plate (201f) is fixed on the clamping plate (201e). The winding wheel (201g) is sleeved on the outside of the moving column (201d). The pull rope (201h) is wound around the winding wheel (201g). The other end of the pull rope (201h) is fixed to the extension plate (201f).
2. The multi-axis machining center milling clamping device as described in claim 1, characterized in that: The movable column (201d) has a spiral groove (201d-1), and a locking block (201i) is fixed inside the winding wheel (201g). The locking block (201i) slides in the spiral groove (201d-1).
3. The multi-axis machining center milling clamping device as described in claim 1 or 2, characterized in that: The clamping assembly (200) further includes an adjusting member (202) disposed on one side of the lifting block (201a), including a fixing block (202a), a locking block (202b), and a first spring (202c). The fixing block (202a) is fixed on the platform (102), and the fixing block (202a) has a sliding groove (202a-1). The lifting block (201a) slides in the sliding groove (202a-1). The lifting block (201a) has a moving groove (201a-2), and the locking block (202b) slides in the moving groove (201a-2). The first spring (202c) is fixed to one end of the locking block (202b), and the other end is fixed to the inner wall of the moving groove (201a-2).
4. The multi-axis machining center milling clamping device as described in claim 3, characterized in that: The fixing block (202a) is provided with a locking groove (202a-2), and the locking block (202b) can engage with the locking groove (202a-2).
5. The multi-axis machining center milling clamping device as described in claim 4, characterized in that: There are multiple locking slots (202a-2).
6. The multi-axis machining center milling clamping device as described in claim 4 or 5, characterized in that: A second spring (201j) is fixed to one side of the movable column (201d), and the other end of the second spring (201j) is fixed to the inner wall of the cylindrical groove (201c-1).
7. The multi-axis machining center milling clamping device as described in claim 6, characterized in that: A third spring (201k) is fixed to one side of the extension plate (201f).
8. The multi-axis machining center milling clamping device as described in claim 7, characterized in that: A push plate (202d) is fixed to one side of the locking block (202b).
9. The multi-axis machining center milling clamping device as described in claim 7 or 8, characterized in that: The fixing block (202a) is fixed with a support plate (202e).
10. The multi-axis machining center milling clamping device as described in claim 9, characterized in that: A positioning block (104) is fixed on the platform (102), and a positioning pin (105) is inserted into the positioning block (104).