Five-axis multi-station flexible clamp

Abstract

The utility model discloses a five-axis multi-station flexible clamp which comprises a base fixedly installed on a five-axis rotary table through bolts, a plurality of datum planes are arranged on the base in a circumferential distribution mode, clamping mechanisms used for clamping workpieces are installed on the datum planes, dovetail blocks are arranged on the workpieces, and the dovetail blocks are connected with the datum planes through bolts. Clamping seats are detachably mounted on the reference surfaces, first clamping grooves are formed in the top surfaces of the clamping seats, and clamping blocks are detachably mounted on the clamping seats; when the clamping device is used, after a dovetail block on a workpiece is placed in the first clamping groove, the clamping block is locked on the clamping base, the dovetail block can be fixedly clamped from the two sides through the first clamping groove and the second clamping groove in the clamping block so that the workpiece can be fixed on the clamping block, operation is easy and convenient, and due to the fact that the multiple clamping mechanisms are arranged, the clamping effect is good. And a plurality of workpieces can be fixed and clamped on the base at the same time, so that the time for replacing the workpieces after shutdown can be effectively saved, and the machining efficiency of the workpieces is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a five-axis multi-station flexible clamp. Background Art

[0002] As the core functional component of a five-axis machining center, the five-axis rotary table is suitable for machining complex, multi-process, high-precision parts, and plays a decisive role in the machining accuracy and efficiency of machine tools. In recent years, five-axis CNC machining centers have been widely used in aerospace, automotive, shipbuilding, precision instrument manufacturing, and other manufacturing industries. When faced with the need for efficient and high-quality machining of complex and unusually shaped parts, five-axis machining is undoubtedly the preferred solution.

[0003] When using the five-axis turntable, it needs to be equipped with a fixture to clamp the workpiece. Currently, the most commonly used fixture is still the bench vise type, which can firmly clamp the workpiece, but can only clamp one workpiece at a time, which is not suitable for large-scale workpiece processing. Secondly, some workpieces are usually processed with dovetail joints (blocks) for assembly. After completing the processing of the dovetail joint, the other outer surfaces of the workpiece need to be machined. If a bench vise is used to clamp the dovetail joint, it is easy to cause loose fixation. If a bench vise is used to clamp other parts of such workpieces, the jaws may cause partial obstruction of the part to be processed, resulting in the need for repeated clamping several times to achieve complete processing of the workpiece. For this reason, we propose a five-axis multi-station flexible fixture. Utility Model Content

[0004] The purpose of the present utility model is to provide a five-axis multi-station flexible fixture to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A five-axis multi-station flexible fixture includes a base fixedly mounted on a five-axis turntable by bolts, a plurality of reference surfaces distributed in a circle on the base, a clamping mechanism for clamping a workpiece is installed on each of the reference surfaces, a dovetail block is provided on the workpiece, a clamping seat is detachably installed on each of the reference surfaces, a first clamping groove is provided on the top surface of the clamping seat, a clamping block is detachably mounted on the clamping seat, a second clamping groove adapted to the dovetail block is provided on the outer wall of the clamping block corresponding to the first clamping groove, and the inner contour of the first clamping groove away from the second clamping groove is adapted to the dovetail block.

[0007] As a further solution of the present invention: the outer wall of the clamp seat located at one end of the first clamp groove is fixedly connected to a stopper by a third screw, and the stopper is provided with a waist groove for passing the third screw.

[0008] As a further solution of the present invention: a second screw is passed through the outer wall of the clamping block, and a threaded hole adapted to the second screw is provided on the clamping seat.

[0009] As a further solution of the present invention: a plurality of guide rods are fixedly mounted on the outer wall of the clamping block, and guide holes adapted to the guide rods are provided through the clamping seat.

[0010] As a further solution of the present invention: a plurality of positioning pins are installed on the reference surface through positioning holes, and the bottom of the clamp seat also begins to have positioning holes adapted to the positioning pins, both ends of the positioning pins are located in the corresponding positioning holes, the bottom surface of the clamp seat is in contact with the reference surface, and the clamp seat is fixedly installed on the corresponding reference surface by a plurality of first screws.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] When the utility model is in use, after the dovetail block on the workpiece is placed in the first clamping groove, the clamping block is locked on the clamping seat, and the dovetail block can be fixedly clamped from both sides by utilizing the first clamping groove and the second clamping groove on the clamping block, so as to realize the fixation of the workpiece on the clamping block. The operation is simple and convenient, and the arrangement of multiple clamping mechanisms enables multiple workpieces to be fixedly clamped on the base at the same time, which can effectively save the time of stopping the machine to replace the workpiece, thereby improving the processing efficiency of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a five-axis multi-station flexible fixture.

[0014] Figure 2 This is an exploded diagram of the clamping mechanism in a five-axis multi-station flexible fixture.

[0015] Figure 3 for Figure 2 A partial enlarged view of .

[0016] Among them, the five-axis turntable 1, the base 2, the reference surface 3, the clamping seat 4, the first screw 5, the positioning pin 6, the positioning hole 7, the first clamping groove 8, the clamping block 9, the second clamping groove 10, the second screw 11, the guide rod 12, the guide hole 13, the stop block 14, the waist groove 15, the workpiece 16, and the dovetail block 17. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention will be further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0019] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation as described in the specification. Therefore, it should not be understood as a limitation on the present invention.

[0020] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0021] See also Figures 1 to 3 In the embodiment of the utility model, a five-axis multi-station flexible fixture includes a base 2 fixedly mounted on a five-axis turntable 1 by bolts. The base 2 is made of 7075-T651 aluminum alloy with hard oxidation treatment. A plurality of reference surfaces 3 are arranged on the base 2 in a circumferential distribution. A clamping mechanism for clamping a workpiece 16 is installed on each of the reference surfaces 3. A dovetail block 17 is provided on the workpiece 16. A clamping seat 4 is detachably mounted on each of the reference surfaces 3. A first clamping groove 8 is provided on the top surface of the clamping seat 4. The clamping seat 4 is detachably mounted on the top surface of the clamping seat The unloader is equipped with a clamping block 9, and the outer wall of the clamping block 9 corresponding to the first clamping groove 8 is provided with a second clamping groove 10 adapted to the dovetail block 17, and the inner contour of the first clamping groove 8 away from the second clamping groove 10 is adapted to the dovetail block 17. Specifically, the clamping seat 4 and the clamping block 9 are both made of 42CrMo alloy structural steel that has been tempered and heat treated. In addition, the reference plane 3 can be tilted so that the clamped workpiece tilts toward the outside of the base 2, thereby reducing the possibility of adjacent workpieces 16 interfering with the tool path of the machine tool during processing.

[0022] The utility model adopts the above-mentioned scheme. When using the clamp, after the dovetail block 17 on the workpiece 16 is placed in the first clamping groove 8, the clamping block 9 is locked on the clamping base 4. The dovetail block 17 can be fixedly clamped from both sides by utilizing the first clamping groove 8 and the second clamping groove 10 on the clamping block 9, so as to achieve fixation of the workpiece 16 on the clamping block 9. The operation is simple and convenient, and the provision of multiple clamping mechanisms enables multiple workpieces 16 to be fixedly clamped on the base 2 at the same time, which can effectively save the time of stopping the machine to replace the workpiece, thereby improving the processing efficiency of the workpiece 16.

[0023] Specific combination Figure 2 and Figure 3 In one embodiment of the present invention, the outer wall of the clamp seat 4 at one end of the first clamp groove 8 is fixedly connected to a stopper 14 by a third screw, and a waist groove 15 for passing the third screw is opened on the stopper 14.

[0024] By setting the stop block 14, the end face of the dovetail block 17 can be blocked on the side wall of the clamping seat 4, so that the dovetail block 17 and the workpiece 16 can be further positioned on the clamping seat 4 to improve the clamping accuracy of the workpiece 16, and through the cooperation of the third screw and the waist groove 15, it is convenient to adjust the length of the stop block 14 extending above the clamping seat 4, so as to facilitate adaptation to different workpieces.

[0025] Specific combination Figure 3 In one embodiment of the present invention, a second screw 11 is provided on the outer wall of the clamping block 9, and a threaded hole compatible with the second screw 11 is provided on the clamping seat 4. Through the cooperation between the second screw 11 and the screw hole, it is convenient to loosen or tighten the clamping block 9 on the clamping seat 4, thereby facilitating the disassembly and assembly of the workpiece 16.

[0026] Specific combination Figure 3 On the basis of the previous embodiment, a plurality of guide rods 12 are fixedly mounted on the outer wall of the clamping block 9 , and guide holes 13 adapted to the guide rods 12 are provided through the clamping seat 4 .

[0027] The cooperation between the guide rod 12 and the guide hole 13 can guide the clamping block 9 on the clamping seat 4, thereby compensating for the problem of insufficient precision in cooperation between the second screw 11 and the threaded hole, and ensuring that the clamping seat 4 can cooperate with the clamping block 9 precisely.

[0028] Specific combination Figure 3 In one embodiment of the present invention, a plurality of positioning pins 6 are installed on the reference surface 3 through positioning holes 7, and the bottom of the clamp seat 4 also has positioning holes 7 adapted to the positioning pins 6. The two ends of the positioning pins 6 are located in the corresponding positioning holes 7. The bottom surface of the clamp seat 4 is in contact with the reference surface 3, and the clamp seat 4 is fixedly installed on the corresponding reference surface 3 by a plurality of first screws 5.

[0029] The provision of the first screw 5 facilitates assembly and disassembly of the clamping base 4 on the reference surface 3 , and the cooperation of the positioning pin 6 and the positioning hole 7 ensures the installation accuracy of the clamping base 4 on the reference surface 3 .

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A five-axis multi-station flexible fixture, characterized by: The invention comprises a base (2) fixedly mounted on a five-axis turntable (1) by bolts, the base (2) being provided with a plurality of reference surfaces (3) distributed in a circumferential manner, the reference surfaces (3) being provided with a clamping mechanism for clamping a workpiece (16), the workpiece (16) being provided with a dovetail block (17), the reference surfaces (3) being provided with a clamping seat (4) being detachably mounted, the top surface of the clamping seat (4) being provided with a first clamping groove (8), the clamping block (9) being detachably mounted on the clamping seat (4), the outer wall of the clamping block (9) corresponding to the first clamping groove (8) being provided with a second clamping groove (10) adapted to the dovetail block (17), the inner contour of the first clamping groove (8) being away from the second clamping groove (10) being adapted to the dovetail block (17).

2. The five-axis multi-station flexible fixture according to claim 1, characterized in that: The outer wall of the clamp seat (4) at one end of the first clamp groove (8) is fixedly connected to a stopper (14) via a third screw, and a waist groove (15) for passing the third screw is provided on the stopper (14).

3. The five-axis multi-station flexible fixture according to claim 1, characterized in that: A second screw (11) is passed through the outer wall of the clamping block (9), and a threaded hole matching the second screw (11) is provided on the clamping seat (4).

4. The five-axis multi-station flexible fixture according to claim 3, characterized in that: A plurality of guide rods (12) are fixedly mounted on the outer wall of the clamping block (9), and guide holes (13) adapted to the guide rods (12) are provided through the clamping seat (4).

5. The five-axis multi-station flexible fixture according to claim 1, characterized in that: A plurality of positioning pins (6) are installed on the reference surface (3) through positioning holes (7), and the bottom of the clamping seat (4) also has positioning holes (7) adapted to the positioning pins (6). Both ends of the positioning pins (6) are located in the corresponding positioning holes (7). The bottom surface of the clamping seat (4) is in contact with the reference surface (3), and the clamping seat (4) is fixedly installed on the corresponding reference surface (3) by a plurality of first screws (5).

Images