Multi-station fixing device based on numerical control machine tool workpiece machining

Abstract

The application relates to a multi-station fixing device for workpiece machining based on a numerical control machine tool, which can have three clamping fixing modes, first, the first mode is that workpieces are clamped through cooperation of corresponding first clamping assemblies and second clamping assemblies, the second mode is that workpieces are clamped through folding of a plurality of second clamping assemblies, and the third mode is that workpieces are clamped through folding of a plurality of first clamping assemblies; when fixed through the first mode, a plurality of workpieces can be clamped at the same time, and due to the small spacing between the first clamping assemblies and the second clamping assemblies, only workpieces with small sizes can be clamped, when fixed through the second mode, a workpiece with a slightly larger size can be fixed at a central position, and when fixed through the third mode, a workpiece with a larger size can be fixed at the central position, so that workpieces with different sizes can be fixed, and the overall practicability and flexibility are high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of numerical control machining, in particular to a multi-station fixing device for workpiece machining based on a numerical control machine tool. BACKGROUND

[0002] A numerical control machine tool is a short form of digital control machine tool, which is an automatic machine tool equipped with a program control system. The control system can logically process programs with control codes or other symbolic instructions and translate them, so as to make the machine tool act and process workpieces. Before the machining process, a fixing device needs to be used to clamp and fix the workpieces to be machined.

[0003] However, the existing fixing device is generally a clamp, which clamps the workpieces to be machined. The clamp can only clamp and fix one tool, and cannot clamp and fix multiple workpieces at the same time, resulting in a waste of a lot of time for disassembling and assembling the workpieces, low work efficiency, and the limitation of the existing clamp, which cannot adapt to clamping of multiple workpieces with large size changes. SUMMARY

[0004] The present application aims to at least solve one of the problems existing in the prior art to some extent. To this end, the present application provides a multi-station fixing device for workpiece machining based on a numerical control machine tool.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] A multi-station fixing device for workpiece machining based on a numerical control machine tool comprises a bottom plate, a first circular plate connected to the bottom plate through a plurality of vertical columns above the bottom plate, a plurality of first sliding rails arranged on the upper end surface of the first circular plate in a circumferential direction, a first sliding block slidingly arranged in the first sliding rail, a first clamping assembly arranged on the first sliding block for clamping a workpiece, a first driving mechanism arranged on the first circular plate, the first driving mechanism being used to drive all the first clamping assemblies to slide so as to be folded or separated, a circular plate arranged on the inner side hole of the first circular plate, a plurality of second sliding rails arranged on the circular plate in a circumferential direction and corresponding to the first sliding rails, a second sliding block slidingly arranged in the second sliding rail, a second clamping assembly arranged on the second sliding block for clamping a workpiece, a second driving mechanism arranged on the circular plate, the second driving mechanism being used to drive all the second clamping assemblies to slide so as to be folded or separated, and a lifting mechanism arranged on the bottom plate and used to drive the circular plate to lift up and down.

[0007] In some embodiments, the first driving mechanism comprises a second circular plate coaxially and rotatably arranged at the lower end of the first circular plate, an outer gear ring arranged outside the second circular plate, a motor support frame arranged on the bottom plate, a first motor arranged on the motor support frame, a first gear arranged on the output shaft of the first motor and capable of engaging with the outer gear ring, a first straight slot communicated with the lower end of the first sliding rail, a first inclined slot arranged through the second circular plate and corresponding to the first straight slot, and a first guide rod arranged at the lower end of the first sliding block and penetrating the first straight slot and the first inclined slot.

[0008] In some embodiments, a plurality of arc-shaped guide slots are arranged on the second circular plate and matched with the columns, and the columns are arranged in the arc-shaped guide slots.

[0009] In some embodiments, the lifting mechanism comprises a cylinder arranged on the bottom plate, a guide plate arranged on the cylinder, a plurality of connecting seats arranged at the edge of the lower end of the circular plate, and the connecting seats are arranged on the guide plate.

[0010] In some embodiments, the second driving mechanism comprises a third circular plate coaxially and rotatably arranged at the lower end of the circular plate, an inner gear ring arranged on the inner side wall of the third circular plate, a second motor arranged on the guide plate, a second gear arranged on the output shaft of the second motor and capable of engaging with the inner gear ring, a second straight slot communicated with the lower end of the second sliding rail, a second inclined slot arranged through the third circular plate and corresponding to the second straight slot, and a second guide rod arranged at the lower end of the second sliding block and penetrating the second straight slot and the second inclined slot.

[0011] In some embodiments, a plurality of guide holes matched with the columns are arranged on the guide plate, and the columns penetrate the guide holes.

[0012] In some embodiments, the first clamping assembly and the second clamping assembly are structurally identical, and each comprises a fixed plate arranged on the first sliding block and the second sliding block, an adjusting plate arranged on the fixed plate, a rotating seat arranged on the adjusting plate, a V-shaped clamping plate and a planar clamping plate arranged on the rotating seat.

[0013] In some embodiments, an adjusting sliding groove and a plurality of screw holes are arranged on the fixed plate, the adjusting plate is slidingly arranged in the adjusting sliding groove, the sliding direction of the adjusting sliding groove is arranged along the sliding direction of the first sliding rail or the second sliding rail, the plurality of screw holes are arranged at intervals along the sliding direction of the first sliding rail or the second sliding rail, and a screw threadedly matched with the screw holes is arranged on the adjusting plate.

[0014] In some embodiments, a screw post is arranged on the adjusting plate, the rotating sleeve is arranged on the screw post, and a locking screw threadedly matched with the screw post is arranged on the rotating seat.

[0015] In some embodiments, an extension seat is symmetrically arranged on the outer side of the rotating seat with the screw post as the center, a positioning hole is symmetrically arranged on the adjusting plate with the screw post as the center, and a positioning rod matched with the positioning hole is arranged on the extension seat.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1. The multi-station fixing device can have three clamping fixing modes. Firstly, the workpiece is clamped through the cooperation of the corresponding first clamping assembly and the second clamping assembly. Secondly, the workpiece is clamped through the convergence of the second clamping assembly. Thirdly, the workpiece is clamped through the convergence of the first clamping assembly. When the first mode is used, multiple workpieces can be clamped at the same time. Since the spacing between the first clamping assembly and the second clamping assembly is small, only small workpieces can be clamped. When the second mode is used, a slightly larger workpiece can be fixed at the center. When the third mode is used, a larger workpiece can be fixed at the center. Therefore, the device can be used to fix workpieces of different sizes, and has high practicability and flexibility.

[0018] 2. The first clamping assembly is driven to slide simultaneously by the first driving mechanism, and the second clamping assembly is driven to slide simultaneously by the second driving mechanism. Therefore, the operation is convenient, and the positioning efficiency of multiple workpieces is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a perspective view of the multi-station fixing device of the present application;

[0020] Figure 2 FIG. 2 is a top view of the multi-station fixing device of the present application;

[0021] Figure 3 FIG. 3 is a sectional view of the multi-station fixing device of the present application at A-A; Figure 2

[0022] Figure 4 FIG. 4 is a perspective view of the multi-station fixing device of the present application when clamping a workpiece;

[0023] Figure 5 FIG. 5 is another perspective view of the multi-station fixing device of the present application;

[0024] Figure 6 ​A front view schematic diagram of the workpiece clamping of the present application;

[0025] Figure 7 A partial exploded schematic diagram of the first driving mechanism of the present application;

[0026] Figure 8 A partial exploded schematic diagram of the second driving mechanism of the present application;

[0027] Figure 9 An exploded structural schematic diagram of the clamping assembly of the present application. DETAILED DESCRIPTION

[0028] The following detailed description provides various different embodiments or examples for implementing the present application. Of course, these are merely examples and are not intended to be limiting. Also, like reference numerals are used to designate corresponding parts throughout the several views, which can be repeated among different embodiments. These repetitions are for the sake of simplicity and clarity in describing the present application and do not represent a particular relationship between the different embodiments and / or structures being discussed.

[0029] As Figures 1-9 shown in one kind of multi-station fixing device based on numerical control machine tool workpiece processing, including bottom plate 1, on the bottom plate 1 top through several columns 2 are connected with the first circular plate 3, on the first circular plate 3 upper end face along the circumference is evenly distributed with several first slide rails 4, in the first slide rail 4 sliding first sliding block 9, on the first sliding block 9 is provided with the first clamping assembly 5 for clamping workpiece, on the first circular plate 3 still be provided with first driving mechanism, the first driving mechanism is used to drive all the first clamping assembly 5 sliding to be folded or separated, on the inner side hole of the first circular plate 3 is provided with circular plate 6, on the circular plate 6 along the circumference is evenly distributed with several second slide rails 7 corresponding to the first slide rail 4, in the second slide rail 7 sliding second sliding block 10, on the second sliding block 10 is provided with the second clamping assembly 8 for clamping workpiece, on the circular plate 6 still be provided with second driving mechanism, the second driving mechanism is used to drive all the second clamping assembly 8 sliding to be folded or separated, on the bottom plate 1 still be provided with the lifting mechanism for driving the circular plate 6 up and down lifting.

[0030] The multi-station fixing device of the present application can have three clamping fixing modes. Firstly, the workpiece can be clamped by the cooperation of the corresponding first clamping assembly 5 and second clamping assembly 8. Secondly, the workpiece can be clamped by the convergence of the second clamping assemblies 8. Thirdly, the workpiece can be clamped by the convergence of the first clamping assemblies 5. When fixed by the first mode, multiple workpieces can be clamped simultaneously. However, due to the small spacing between the first clamping assembly 5 and the second clamping assembly 8, only small-sized workpieces can be clamped. When fixed by the second mode, a slightly larger workpiece can be fixed at the center position. When fixed by the third mode, a larger workpiece can be fixed at the center position. Therefore, the device can be used to fix workpieces of different sizes, and has high practicability and flexibility.

[0031] It should be noted that when the workpiece is clamped by the convergence of the first clamping assembly 5, in order to allow the second clamping assembly 8 not to block the clamping work, the second clamping assembly 8 on the circular plate 6 can be driven downward by the lifting mechanism, so that the second clamping assembly 8 is lower than the first sliding rail 4, thereby not blocking the clamping work of the first clamping assembly 5.

[0032] In addition, the sliding of the first clamping assemblies 5 is driven simultaneously by the first driving mechanism, and the sliding of the second clamping assemblies 8 is driven simultaneously by the second driving mechanism. Therefore, it is not necessary to drive and adjust one by one, the overall operation is convenient, and the positioning efficiency of multiple workpieces is improved.

[0033] Referring to Figure 1 、 Figure 2 、 Figure 7 , the first driving mechanism comprises a second circular plate 21 coaxially rotating at the lower end of the first circular plate 3. An outer gear ring 22 is arranged outside the second circular plate 21. A motor support frame 23 is arranged on the bottom plate 1. A first motor 24 is arranged on the motor support frame 23. A first gear 25 capable of meshing with the outer gear ring 22 is arranged on the output shaft of the first motor 24. A first straight groove 26 is communicated with the lower end of the first sliding rail 4. A first inclined groove 27 corresponding to the first straight groove 26 is arranged through the second circular plate 21. A first guide rod 28 is arranged at the lower end of the first sliding block 9. The first guide rod 28 is respectively arranged in the first straight groove 26 and the first inclined groove 27.

[0034] When the first driving mechanism works, the first gear 25 is driven to rotate by the first motor 24, the first gear 25 meshes with the outer gear ring 22, thereby driving the second circular plate 21 to rotate, the first inclined groove 27 on the second circular plate 21 pushes the first guide rod 28 to slide in the first straight groove 26, thereby driving the first sliding block 9 to slide in the first sliding rail 4, and the sliding folding or separation of the whole first clamping assembly 5 is realized.

[0035] Further, a plurality of arc-shaped guide grooves 30 matched with the stand column 2 are arranged on the second circular plate 21, and the stand column 2 is arranged in the arc-shaped guide groove 30.

[0036] As shown in Figure 3 Figure 4 , Figure 6 , the lifting mechanism includes a cylinder 31 arranged on the bottom plate 1, a guide plate 32 arranged on the cylinder 31, a plurality of connecting seats 33 arranged at the edge of the lower end of the circular plate 6, and the connecting seats 33 are arranged on the guide plate 32; when the first circular plate 3 is flush with the circular plate 6, the workpiece can be clamped by the first clamping assembly 5 and the second clamping assembly 6 at this time; if it is required to use a plurality of first clamping assemblies 5 for clamping, the cylinder 31 can be driven to drive the circular plate 6 to descend, drive the guide plate 32 and the circular plate 6 to descend, and then make the second clamping assembly 8 on the circular plate 6 lower than the first sliding rail 4, so as not to block the clamping work of the first clamping assembly 5.

[0037] In order to enable the guide plate 32 and the circular plate 6 to stably ascend and descend, a plurality of guide holes 51 matched with the stand column 2 are arranged on the guide plate 32, and the stand column 2 is arranged in the guide hole 51, thereby guiding the guide plate 32 to ascend and descend through the guide of the stand column 2.

[0038] As shown in Figure 1 , Figure 2 , Figure 8 , the second driving mechanism includes a third circular plate 41 coaxially and rotatably arranged at the lower end of the circular plate 6, an inner gear ring 42 arranged on the inner side wall of the third circular plate 41, a second motor 43 arranged on the guide plate 32, a second gear 44 arranged on the output shaft of the second motor 43 and capable of meshing with the inner gear ring 42, a second straight groove 45 communicated with the lower end of the second sliding rail 7, a second inclined groove 46 arranged on the third circular plate 41 and corresponding to the second straight groove 45, and a second guide rod 47 arranged at the lower end of the second sliding block 10 and respectively arranged in the second straight groove 45 and the second inclined groove 46.

[0039] When the second driving mechanism is working, the second motor 43 drives the second gear 44 to rotate, the second gear 44 meshes with the inner ring gear 42, thereby driving the third circular plate 41 to rotate, the second inclined groove 46 on the third circular plate 41 pushes the second guide rod 47 to slide in the second straight groove 45, thereby driving the second sliding block 10 to slide in the second sliding rail 7, and the sliding of the whole second clamping assembly 8 is realized.

[0040] Referring to Figure 9 As shown, the first clamping assembly 5 and the second clamping assembly 8 are the same in structure, wherein each includes a fixed plate 71 arranged on the first sliding block 9 and the second sliding block 10, an adjusting plate 72 arranged on the fixed plate 71, a rotating seat 73 arranged on the adjusting plate 72, a V-shaped clamping plate 74 arranged on one side of the rotating seat 73, and a flat clamping plate 75 arranged on the other side of the rotating seat 73, so that the V-shaped clamping plate 74 or the flat clamping plate 75 can be selected for clamping according to different shapes of workpieces, and the V-shaped clamping plate 74 can be used for clamping rectangular workpieces or cylindrical workpieces.

[0041] Further, the adjusting plate 72 is slidingly arranged in an adjusting sliding groove 80 arranged on the fixed plate 71, the sliding direction of the adjusting sliding groove 80 is arranged along the sliding direction of the first sliding rail 4 or the second sliding rail 7, and a plurality of screw holes 81 are arranged along the sliding direction of the first sliding rail 4 or the second sliding rail 7, the screw holes 81 are arranged at intervals, a bolt 82 is arranged on the adjusting plate 72 and can be screwed with the screw holes 81, so that the positions of the V-shaped clamping plate 74 and the flat clamping plate 75 on the first sliding block 9 or the second sliding block 10 can be appropriately adjusted, the spacing of each group of the first clamping assembly 5 and the second clamping assembly 8 can be different, and the practicability and flexibility are improved.

[0042] Further, a screw column 91 is arranged on the adjusting plate 72, the rotating seat 73 is sleeved on the screw column 91, and a locking screw 92 is arranged on the rotating seat 73 and can be screwed with the screw column 91, so that the V-shaped clamping plate 74 or the flat clamping plate 75 can be selected as a clamping surface by rotating the rotating seat 73, and finally the rotating seat 73 can be fixed by the locking screw 92.

[0043] Further, there are extension seats 93 symmetrically arranged on the outer side of the rotating seat 73 with the screw column 91 as the center, there are positioning holes 94 symmetrically arranged on the adjusting plate 72 with the screw column 91 as the center, and a positioning rod 95 is arranged on the extension seat 93 and can be matched with the positioning hole 94, so that when the rotating seat 73 is rotated and adjusted, the positioning rod 95 can be inserted into the positioning hole 94 first to preliminarily fix the rotating seat 73, and finally the locking screw 92 can be directly tightened.

[0044] Those skilled in the art should understand that the present application is not limited by the above-mentioned embodiments and description, and the above-mentioned embodiments and description are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A multi-station fixing device for workpiece processing based on a numerical control machine tool, characterized in that: The utility model relates to a kind of first and second clamping assemblies, including bottom plate (1), first circular plate (3) is connected by several columns (2) above the bottom plate (1), first slide rail (4) is evenly distributed in the upper end surface of first circular plate (3) along circumference, first slider (9) is slid in first slide rail (4), first clamping assembly (5) for clamping workpiece is arranged on first slider (9), first drive mechanism is also arranged on first circular plate (3), the first drive mechanism is used to drive the sliding of all first clamping assembly (5) to be gathered or separated, circular plate (6) is arranged on the inside circular hole of first circular plate (3), second slide rail (7) corresponding to first slide rail (4) is evenly distributed on circular plate (6) along circumference, second slider (10) is slid in second slide rail (7), second clamping assembly (8) for clamping workpiece is arranged on second slider (10), second drive mechanism is also arranged on circular plate (6), the second drive mechanism is used to drive the sliding of all second clamping assembly (8) to be gathered or separated, lifting mechanism for driving the up-down lifting of circular plate (6) is also arranged on the bottom plate (1).

2. The multi-station fixture for workpiece processing based on a numerical control machine tool according to claim 1, characterized in that: The first drive mechanism includes coaxial rotation second circular plate (21) arranged in the lower end of the first circular plate (3), outer gear ring (22) is arranged outside the second circular plate (21), motor support frame (23) is arranged on the bottom plate (1), first motor (24) is arranged on the motor support frame (23), first gear (25) capable of meshing with outer gear ring (22) is arranged on the output shaft of first motor (24), first straight slot (26) is communicated in the lower end of first slide rail (4), first inclined slot (27) corresponding to first straight slot (26) is arranged through the second circular plate (21), first guide rod (28) is arranged in the lower end of first slider (9), and the first guide rod (28) is respectively arranged in first straight slot (26) and first inclined slot (27).

3. The multi-station fixture for workpiece processing based on a numerical control machine tool according to claim 2, characterized in that: A plurality of arc-shaped guide grooves (30) cooperating with the columns (2) are arranged on the second circular plate (21), and the columns (2) are arranged in the arc-shaped guide grooves (30).

4. The multi-station fixture for workpiece processing based on a numerical control machine tool according to claim 1, characterized in that: The lifting mechanism includes a gas cylinder (31) arranged on the bottom plate (1), a guide plate (32) is arranged on the gas cylinder (31), a plurality of connecting seats (33) are arranged at the edge of the lower end of the circular plate (6), and the connecting seats (33) are arranged on the guide plate (32).

5. The multi-station fixture for workpiece processing based on a numerical control machine tool according to claim 4, characterized in that: The second driving mechanism comprises a third circular plate (41) coaxially rotating at the lower end of the circular plate (6), an inner gear ring (42) is arranged on the inner circular side wall of the third circular plate (41), a second motor (43) is arranged on the guide plate (32), a second gear (44) capable of meshing with the inner gear ring (42) is arranged on the output shaft of the second motor (43), a second straight groove (45) is communicated at the lower end of the second sliding rail (7), a second inclined groove (46) corresponding to the second straight groove (45) is arranged through the third circular plate (41), and a second guide rod (47) is arranged at the lower end of the second sliding block (10), and the second guide rod (47) is respectively arranged in the second straight groove (45) and the second inclined groove (46).

6. The multi-station fixture for workpiece processing based on a numerical control machine tool according to claim 4, characterized in that: A plurality of guide holes (51) matched with the stand column (2) are arranged on the guide plate (32), and the stand column (2) penetrates the guide hole (51).

7. The multi-station fixture of claim 1, wherein: The first clamping assembly (5) and the second clamping assembly (8) are structurally identical, and each comprises a fixed plate (71) arranged on the first sliding block (9) and the second sliding block (10), an adjusting plate (72) arranged on the fixed plate (71), a rotating seat (73) arranged on the adjusting plate (72), and a V-shaped clamping plate (74) and a flat clamping plate (75) arranged on the rotating seat (73).

8. The multi-station fixture for workpiece processing based on a numerical control machine tool according to claim 7, characterized in that: An adjusting sliding groove (80) and a plurality of screw holes (81) are arranged on the fixed plate (71), the adjusting plate (72) is slidingly arranged in the adjusting sliding groove (80), the sliding direction of the adjusting sliding groove (80) is arranged along the sliding direction of the first sliding rail (4) or the second sliding rail (7), a plurality of screw holes (81) are arranged at intervals along the sliding direction of the first sliding rail (4) or the second sliding rail (7), and a screw bolt (82) capable of threadedly cooperating with the screw hole (81) is arranged penetrating the adjusting plate (72).

9. The multi-station fixture of claim 7, wherein: A screw column (91) is arranged on the adjusting plate (72), the rotating seat (73) is sleeved on the screw column (91), and a locking screw (92) capable of threadedly cooperating with the screw column (91) is arranged penetrating the rotating seat (73).

10. The multi-station fixture for use in workpiece machining based on a numerical control machine tool according to claim 9, characterized in that: There is an extension seat (93) symmetrically arranged on the outer side of the rotating seat (73) with the screw column (91) as the center, there is a positioning hole (94) symmetrically arranged on the adjusting plate (72) with the screw column (91) as the center, and a positioning rod (95) capable of cooperating with the positioning hole (94) is arranged penetrating the extension seat (93).

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