A quick positioning and clamping device for vise on machining center

Abstract

The application discloses a quick positioning and clamping device for a center vice on a machining center, which comprises a mounting seat configured to be fixed on the machining center, at least four insertion holes for the center vice are arranged on the mounting seat, and sliding grooves are respectively arranged on the side walls of the mounting seat. Sliding blocks are respectively arranged in the sliding grooves in a sliding mode, and a screw rod is connected between the two sliding blocks. When the screw rod is rotated in a forward or reverse direction, the two sliding blocks are driven to move close to or away from each other. Each of the two insertion holes is arranged in a group, and each group of the insertion holes is communicated with the sliding groove on the corresponding side. When the sliding blocks move close to each other, the end portions of the sliding blocks are locked and fixed on the insertion part of the center vice. When the sliding blocks move away from each other, the insertion part of the center vice is stopped from being locked and fixed. The device is integrated with the functions of quick positioning, accurate locking and stable fixing, and solves the efficiency, precision and safety problems of the traditional center vice clamping, and significantly improves the production efficiency, machining quality and operation convenience.

Description

Technical Field

[0001] This utility model relates to the field of positioning and clamping technology of vises for machining centers, and in particular to a quick positioning and clamping device for a vise on a machining center. Background Technology

[0002] In the field of modern mechanical manufacturing, four-axis machining centers and five-axis linkage machining centers, with their multi-dimensional and high-precision machining capabilities, have become core equipment for machining complex curved surface parts and high-precision structural components, and are widely used in key manufacturing fields such as aerospace, precision molds, and high-end equipment. Center vises and similar multi-station clamping devices, as core components for achieving precise workpiece positioning and stable clamping in these types of equipment, directly determine the machining quality, production efficiency, and operational safety of the equipment through their installation, debugging accuracy, efficiency, and stability.

[0003] Currently, the industry generally uses the traditional manual adjustment method for installing clamping devices on four-axis machining centers and five-axis linkage machining centers, which has many common and prominent technical problems: Firstly, the installation and debugging process is time-consuming. Whether it is the installation of the center vise on a four-axis machine or the positioning of the multi-station fixture on a five-axis machine, it requires a tedious positioning calibration and clamping debugging process. Each operation generally takes more than 40 minutes, which consumes a large amount of the equipment's effective processing time and seriously restricts the improvement of production efficiency.

[0004] Secondly, installation accuracy is highly dependent on manual skills. Traditional methods require on-site workers to manually locate the machine tool's rotation center (the center of a single rotary axis in a four-axis machine or the center of a dual rotary axis linkage in a five-axis machine) based on their experience. During operation, factors such as human judgment deviations and differences in operator proficiency can easily lead to inaccurate positioning of the rotation center. Furthermore, five-axis equipment is more difficult to position than four-axis equipment due to the complexity of multi-axis linkages, and the risk of deviation is even higher.

[0005] Third, positioning deviations directly lead to quality and cost issues. Small deviations in the coordinates of the rotation center can be amplified step by step during the machining process, resulting in workpiece dimensional inaccuracies and non-compliance with form and position tolerances, significantly increasing the product scrap rate. At the same time, repeated trial cuts and rework are required to correct deviations, further increasing material waste and time costs.

[0006] Fourth, safety hazards and the burden of repetitive verification are prominent. Under traditional installation methods, the connection between the clamping device and the equipment is not secure enough. During machining, vibration and cutting forces can easily cause displacement, affecting machining accuracy and potentially leading to workpiece detachment, equipment collisions, and other safety accidents. To mitigate these risks, the rotation center coordinates of four-axis and five-axis equipment must be repeatedly verified daily, with each verification taking approximately 10 minutes, further increasing operational complexity and non-productive time consumption.

[0007] Therefore, there is an urgent need for a fast, accurate, and stable vise center quick positioning and clamping device that can be adapted to four-axis and five-axis machining centers to solve many problems existing in the current traditional methods. Summary of the Invention

[0008] This utility model aims to solve one of the technical problems existing in the prior art.

[0009] This application provides a quick positioning and clamping device for a vise on a machining center, including a mounting base configured to be fixed on a machining center. The mounting base is characterized by having at least four insertion holes for inserting the central vise. Sliding grooves are respectively formed on the side walls of the mounting base, and sliding blocks are slidably disposed in two of the two sliding grooves. A screw connects the two sliding blocks. When the screw is rotated in both directions, it causes the two sliding blocks to move closer or further apart. The two insertion holes are arranged in a group on each side, and each group of insertion holes communicates with the corresponding sliding groove on one side. This allows the sliding blocks to lock and fix the insertion portion of the central vise when they move closer together, and to stop locking and fixing the insertion portion of the central vise when the sliding blocks move further apart.

[0010] Preferably, at least one end of the screw has an internal hexagonal hole.

[0011] Preferably, the upper half of the insertion hole has a circular cross-section, and the lower half has an inner diameter that gradually decreases from top to bottom, forming an inverted cone shape. The part of the central vise inserted into the insertion hole is adapted to the shape of the insertion hole.

[0012] Preferably, the mounting base has mounting holes at its four corners, and each mounting hole has two sections, the upper section having a larger diameter than the lower section.

[0013] Preferably, the mounting base has a central mounting post at its bottom, and the central mounting post has at least two central holes. The two central holes are symmetrically arranged around the center of the mounting post. The mounting base has a corresponding central mounting hole at its bottom. The central mounting post is fixed to the bottom of the mounting base by screwing a bolt through the central hole into the central mounting hole.

[0014] Preferably, the sliding block is provided with guide slopes on both the top and bottom of one corner facing the insertion hole. The height of the upper guide slope gradually increases from the side closest to the insertion hole to the other side, and the height of the lower guide slope gradually decreases from the side closest to the insertion hole to the other side.

[0015] Preferably, the two guide slopes are arranged symmetrically at the top and bottom along the middle of the side wall of the sliding block.

[0016] Preferably, the sliding block has a cut surface facing one corner of the insertion hole and located between two guide slopes, and the plane of the cut surface is directly opposite the center of the insertion hole.

[0017] Preferably, the portion of the central vise inserted into the insertion hole is cylindrical, and a limiting ring groove is provided circumferentially on the side wall for one corner of the sliding block to be engaged.

[0018] Preferably, the upper and lower side walls of the limiting ring groove are configured as annular inclined surfaces adapted to the two guide slopes.

[0019] By adopting the above technical solution, the device, through its integrated structure of rapid positioning, precise locking, and stable fixation, solves the pain points of efficiency, accuracy, and safety in traditional vises while maintaining a simple and clear structure. It significantly improves the production efficiency, processing quality, and ease of operation of machining centers, greatly enhances installation and debugging efficiency, reduces non-productive time consumption, improves positioning accuracy, reduces reliance on manual skills, and enhances the clamping stability and safety of the central vise.

[0020] The beneficial effects of this invention will be explained in detail in the embodiments, thereby making the beneficial effects more obvious. Attached Figure Description

[0021] Figure 1 This is a side-view, three-dimensional structural diagram of the mounting base in an embodiment of this application.

[0022] Figure 2 This is a top-view three-dimensional structural diagram of the mounting base in the embodiments of this application.

[0023] Figure 3 This is a schematic diagram of the mounting base from a bottom view in an embodiment of this application.

[0024] Figure 4 This is a side-view perspective three-dimensional structural diagram of the mounting base without the sliding block in the embodiment of this application.

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the sliding block and screw in the embodiments of this application.

[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of the central mounting column in the embodiments of this application.

[0027] Figure 7 This is a schematic diagram of the main structure of the mounting base in the embodiments of this application.

[0028] Figure 8 for Figure 7 A schematic diagram of the specific structure of the cross-section in the CC direction.

[0029] Figure 9 This is a schematic diagram of the three-dimensional structure of the central vise in the embodiments of this application. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0031] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0032] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.

[0033] Example 1: like Figures 1-9 As shown, a quick positioning and clamping device for a vise on a machining center includes a mounting base 1, which is configured to be fixed on a machining center. In a specific embodiment of this utility model, the mounting base 1 is provided with at least four insertion holes 2 for inserting the central vise. The four insertion holes 2 at preset positions cooperate with the insertion part on the central vise to preliminarily determine the center of the central vise. Sliding grooves 3 are respectively opened on the two side walls of the mounting base 1. Sliding blocks 4 are slidably arranged in the two sliding grooves 3 respectively. A screw 5 is connected between the two sliding blocks 4. When the screw 5 is rotated in the forward and reverse directions, it causes the two sliding blocks 4 to move closer or further away from each other. The two insertion holes 2 are arranged in a group on the left and right sides, and each group of insertion holes 2 is connected to the corresponding sliding groove 3 on the side. When the sliding blocks 4 are close together, the ends of the sliding blocks 4 lock and fix the insertion part of the central vise. When the sliding blocks 4 are far apart, the insertion part of the central vise stops locking and fixing. The screw 5 is configured with a smooth circular core in the middle, and the threads on the front and rear sections are in opposite directions. It is rotatably connected to the mounting base 1 in the middle, and its forward and reverse rotation controls the movement of the two sliding blocks 4, causing them to move closer and further apart. Figure 5 and Figure 8 As shown, the outer diameter of the annular part in the middle of the screw 5 is larger than the outer diameter of the threaded sections before and after it, so that it can rotate inside the mounting base 1.

[0034] In a specific embodiment of this utility model, in order to facilitate the operation of the screw 5, an internal hexagonal hole 6 is provided at one end of the screw 5. The screw 5 can be rotated quickly by inserting an internal hexagonal wrench into the internal hexagonal hole 6, which greatly simplifies the locking and unlocking operation.

[0035] In a specific embodiment of this utility model, the upper half of the insertion hole 2 has a circular cross-section, while the lower half has an inner diameter that gradually decreases from top to bottom, forming an inverted cone shape. The portion of the central vise inserted into the insertion hole 2 is adapted to the shape of the insertion hole 2. When the central vise is inserted, the inverted cone structure of the lower half can achieve automatic centering through the inclined guide, ensuring accurate initial positioning of the central vise after insertion without the need for repeated manual calibration.

[0036] In a specific embodiment of this utility model, a mounting hole 101 is provided at each of the four corners of the mounting base 1 for fixing the mounting base 1 to the machining center. The mounting hole 101 has a two-section structure, with the diameter of the upper section being larger than that of the lower section. The upper section can accommodate the bolt head, while the lower section mates with the bolt shank, achieving a tight fit and fixation between the mounting base 1 and the machining center, thus avoiding vibration problems caused by installation gaps.

[0037] In a specific embodiment of this utility model, in order to further improve the fixing stability of the mounting base 1, a central mounting post 102 is provided at the center of the bottom of the mounting base 1, and two central holes 103 are provided on the central mounting post 102, which are arranged symmetrically on the left and right sides along the center of the mounting post 102. The bottom of the mounting base 1 is provided with a central mounting hole corresponding to the position of the central mounting post 102. The central mounting post 102 is fixed to the bottom of the mounting base 1 after being screwed into the central mounting hole 103 by a bolt. The outer diameter of the central mounting post 102 matches the inner diameter of the central circular hole of the machining center's turntable. After the central mounting post 102 is inserted into the central circular hole of the machining center's turntable, it is then fixedly connected to the turntable groove of the machining center by a bolt passing through the mounting hole 101. This forms a quick positioning and installation structure with a central mounting post 102 positioning and four-corner fixing structure, ensuring that the central axis of the mounting base is consistent with the central axis of the machining center's turntable. This further ensures that the central axis of the central vise is consistent with the central axis of the machining center's turntable, reducing the time wasted when the central vise cannot be directly determined when fixing the four corners on the machining center's turntable and requires constant adjustment of the fixing position.

[0038] In a specific embodiment of this utility model, the sliding block 4 is provided with guide slopes 11 at both the top and bottom of one corner facing the insertion hole 2. The slope height of the upper guide slope 11 gradually increases from the side closest to the insertion hole 2 to the other side, while the slope height of the lower guide slope 11 gradually decreases from the side closest to the insertion hole 2 to the other side. The two guide slopes 11 are symmetrically arranged along the middle of the sidewall of the sliding block 4. This symmetrical structure allows for uniform clamping force on the central vise insertion part through synchronous contact of the upper and lower slopes when the sliding block 4 approaches the insertion hole 2, avoiding positioning offset caused by unilateral force.

[0039] In a specific embodiment of this utility model, the sliding block 4 is provided with a cut surface 12 facing one corner of the insertion hole 2 and located between the two guide slopes 11, with the plane of the cut surface 12 facing the center of the insertion hole 2. When the sliding block 4 is locked, the cut surface 12 fits against the side wall of the insertion part of the central vise, forming a rigid constraint, further ensuring the radial positioning accuracy of the central vise.

[0040] By adopting the above technical solution, this embodiment achieves rapid positioning and locking of the center vise: after the center vise is inserted into the insertion hole 2, it automatically centers itself through the inverted conical structure; rotating the screw 5 brings the sliding block 4 closer, and the guide slope 11 and the tangent surface 12 cooperate to achieve precise locking; the multi-point fixed mounting base 1 ensures overall stability. The entire process does not require manual calibration of the rotation center, and the installation and debugging time for a single session is shortened to less than 10 minutes, greatly improving efficiency while reducing reliance on manual skills.

[0041] Example 2: The difference from Embodiment 1 is that, in addition to including the structural features of the aforementioned embodiments, in this specific embodiment of the present invention, the portion of the central vise inserted into the insertion hole 2 is cylindrical and has a limiting ring groove 13 arranged circumferentially on its side wall for the sliding block 4 to be engaged at one corner.

[0042] In a specific embodiment of this utility model, the upper and lower side walls of the limiting ring groove 13 are configured as ring inclined surfaces 131 adapted to the two guide slopes 11.

[0043] By adopting the above technical solution, when the sliding block 4 approaches the insertion part of the central vise, the guide slope 11 of the sliding block 4 precisely engages with the annular inclined surface 131 of the limiting annular groove 13, forming a wedge-tightening structure. Under the driving force of the screw 5, the guide slope 11 generates an axial constraint force on the annular inclined surface 131, which not only achieves radial locking but also restricts the axial movement of the central vise, further improving clamping stability. At the same time, the cooperation between the annular inclined surface 131 and the guide slope 11 can automatically correct the positional deviation of the central vise during the locking process, ensuring its coaxiality with the rotation center of the machining center and reducing the risk of positioning offset caused by vibration.

[0044] Example 3: The difference from Embodiment 1 is that, in addition to including the structural features of the aforementioned embodiments, in this specific embodiment of the present invention, the screw 5 has internal hexagonal holes 6 at both ends.

[0045] By adopting the above technical solution, operators can choose to insert the Allen wrench from one end or the other end of the screw 5 according to the spatial layout of the machining center. This significantly improves operational flexibility, especially in scenarios with multi-station machining or limited space on one side of the mounting base 1. The design of the Allen holes 6 at both ends also enables two-person collaborative operation (such as when rapid tightening is required), further shortening the operation time. At the same time, it avoids the problem of uneven wear of the screw 5 caused by force on one end, extending the service life of the device.

[0046] In specific embodiments of this utility model, such as Figure 6 As shown, the central mounting post 102 is mounted on a central mounting plate 100. The central mounting plate 100 is installed to the bottom of the mounting base 1 using a four-bolt fixing structure. The bottom of the mounting base 1 has corresponding grooves and holes for the four bolts to screw into. This structure is used for the installation of the screw rod 5. After unscrewing the four bolts, the central mounting plate 100 can be removed, and then the screw rod 5 can be rotated and installed into the mounting base 1, as shown. Figure 8 As shown, after the screw 5 is installed, the center mounting plate 100 is installed into the corresponding groove at the bottom of the mounting base 1, and then the four bolts are installed to fix the center mounting plate 100.

[0047] Furthermore, the upper surface of the central mounting plate 100 has a semi-annular groove in the middle that mates with the annular part of the screw 5. Half of the annular part of the screw 5 rotates in the semi-annular groove. Connecting grooves with a width smaller than the semi-annular groove are connected on the front and rear sides of the semi-annular groove. Correspondingly, the mounting base 1 also has a semi-annular groove and a connecting groove. The two connecting grooves on the mounting base 1 are connected to the sliding groove 3. The two sliding blocks 4 are respectively provided with threaded holes with opposite thread directions for mates with the screw 5.

[0048] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0049] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A quick-positioning and clamping device for a vise on a machining center, comprising a mounting base (1), said mounting base (1) being configured to be fixed on a machining center, characterized in that, The mounting base (1) is provided with at least four insertion holes (2) for inserting the central vise. The mounting base (1) is provided with sliding grooves (3) on both sides. Sliding blocks (4) are slidably arranged in the two sliding grooves (3). A screw (5) is connected between the two sliding blocks (4). When the screw (5) is rotated in the forward and reverse directions, it drives the two sliding blocks (4) to move closer or further away from each other. The two insertion holes (2) are arranged in a group on the left and right sides. Each group of insertion holes (2) is connected to the corresponding sliding groove (3) on the side. When the sliding blocks (4) move closer, the end of the sliding block (4) locks and fixes the insertion part of the central vise. When the sliding blocks (4) move further away from each other, the insertion part of the central vise stops locking and fixing.

2. The quick positioning and clamping device for a machining center vise according to claim 1, characterized in that, At least one end of the screw (5) is provided with an internal hexagonal hole (6).

3. The quick positioning and clamping device for a machining center vise according to claim 1, characterized in that, The upper half of the insertion hole (2) has a circular cross-section, and the lower half has an inner diameter that gradually decreases from top to bottom, forming an inverted cone shape. The part of the central vise inserted into the insertion hole (2) is adapted to the shape of the insertion hole (2).

4. The quick positioning and clamping device for a machining center vise according to claim 1, characterized in that, The mounting base (1) is provided with mounting holes (101) at its four corners. The mounting holes (101) are divided into upper and lower sections, with the upper section having a larger diameter than the lower section.

5. The quick positioning and clamping device for a machining center vise according to claim 4, characterized in that, The mounting base (1) is provided with a central mounting post (102) at the bottom. The central mounting post (102) has at least two central holes (103). The two central holes (103) are arranged symmetrically on the left and right sides along the center of the mounting post (102). The mounting base (1) is provided with a corresponding central mounting hole at the bottom. The central mounting post (102) is fixed to the bottom of the mounting base (1) after being screwed into the central mounting hole through the central hole (103) by a bolt.

6. A quick-positioning and clamping device for a machining center vise according to any one of claims 1-5, characterized in that, The sliding block (4) has guide slopes (11) on both the top and bottom of one corner facing the insertion hole (2). The slope height of the upper guide slope (11) gradually increases from the side closest to the insertion hole (2) to the other side, and the slope height of the lower guide slope (11) gradually decreases from the side closest to the insertion hole (2) to the other side.

7. A quick positioning and clamping device for a machining center vise according to claim 6, characterized in that, Two guide slopes (11) are symmetrically arranged along the middle of the side wall of the sliding block (4).

8. A quick positioning and clamping device for a machining center vise according to claim 6, characterized in that, The sliding block (4) has a cut surface (12) facing one corner of the insertion hole (2) and located between two guide slopes (11), and the plane of the cut surface (12) is directly opposite the center of the insertion hole (2).

9. A quick positioning and clamping device for a machining center vise according to claim 6, characterized in that, The part of the central vise inserted into the insertion hole (2) is cylindrical and has a limiting ring groove (13) on its side wall along the circumferential direction for the sliding block (4) to be engaged at one corner.

10. A quick positioning and clamping device for a vise on a machining center according to claim 9, characterized in that, The upper and lower side walls of the limiting annular groove (13) are configured as annular inclined surfaces (131) adapted to the two guide slopes (11).

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