Five-axis machining center positioning clamp

Abstract

The utility model discloses a five-axis machining center positioning fixture, which relates to the technical field of five-axis machining center fixtures and comprises a U-shaped base, a mounting groove is arranged on the inner side of the U-shaped base, a rotary table is arranged on the inner side of the mounting groove, a bottom plate is arranged at the upper end of the rotary table, and two groups of fixing plates are arranged at the upper end of the bottom plate. Placing tables are arranged at the upper ends of the two sets of fixing plates, multiple sets of mounting holes are formed in the inner sides of the two sets of placing tables, three sets of flat head screws are arranged on the inner sides of the multiple sets of mounting holes, and a gear shaft is arranged between the two sets of fixing plates. According to the five-axis machining center positioning clamp, due to the arrangement of the tooth-shaped clamp, the five-axis machining center positioning clamp can be more suitable for parts of different shapes and can be used for clamping parts similar to triangular parts, arc parts and the like differently, a fulcrum is generated in the clamping state, and the clamping precision is improved. In this way, the situation that due to the fact that the shape of the part is singular, the part possibly deviates in the clamping process, and the machining quality of the part is reduced is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of five-axis machining center fixtures, in particular to a five-axis machining center positioning fixture. Background Art

[0002] The five-axis linkage CNC machine tool is a machine tool with high technological content and high precision, which is specially used for processing complex curved surfaces. This machine tool system has a significant influence on a country's aviation, aerospace, military, scientific research, precision instruments, high-precision medical equipment and other industries. The five-axis linkage CNC machine tool system is a means to solve the processing of impellers, blades, marine propellers, heavy generator rotors, turbine rotors, large diesel engine crankshafts, etc.

[0003] The existing five-axis machining center needs to use a fixture when it is installed and used, but the parts are diverse and the clamping and fixing methods are different, which can easily cause the parts to shift, thereby reducing the processing quality of the parts. In addition, most fixtures need to be tightened manually using a hexagonal wrench, but it is not easy for manual tightening to control the strength. When the force is too large, it is easy to leave marks on the surface of the workpiece, requiring secondary processing, thereby reducing the processing quality of the workpiece and bringing certain adverse effects to people's use process. In order to solve the shortcomings of the existing technology, we propose a positioning fixture for a five-axis machining center. Utility Model Content

[0004] The main purpose of the utility model is to provide a positioning fixture for a five-axis machining center, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A positioning fixture for a five-axis machining center comprises a U-shaped base, a mounting groove is arranged on the inner side of the U-shaped base, a turntable is arranged on the inner side of the mounting groove, a bottom plate is arranged on the upper end of the turntable, two groups of fixing plates are arranged on the upper end of the bottom plate, a placing table is arranged on the upper end of the two groups of fixing plates, a plurality of mounting holes are arranged on the inner sides of the two groups of placing tables, three groups of flat head screws are arranged on the inner sides of the plurality of mounting holes, a gear shaft is arranged between the two groups of fixing plates, racks are arranged on the front and rear ends of the gear shaft, a second mounting plate is arranged on the relatively outer sides of the two groups of racks, a limiting block is arranged on the relatively inner end of the two groups of racks, a slider is arranged on the relatively outer end of the two groups of racks, and a toothed fixture is arranged on the outer surface of the upper end of the two groups of sliders.

[0007] Preferably, a first driving motor is provided at the lower end of the U-shaped base. A plurality of fixing bolts are provided inside the first driving motor. A first rotating shaft is provided at the upper end of the first driving motor. A turntable is provided at the upper end of the first rotating shaft. A second driving motor is provided inside the turntable. A second rotating shaft is provided at the upper end of the second driving motor. A first mounting plate is provided inside the turntable. Connecting rotating holes are provided on both sides of the U-shaped base.

[0008] Preferably, the turntable is detachably connected to the U-shaped base through a mounting groove. Through holes are provided inside the fixing plate. A plurality of flat head screws are detachably connected to the placing table through mounting holes. The flat head screws are detachably connected to the fixing plate through the through holes of the fixing plate. The placing table is detachably connected to the fixing plate through the flat head screws.

[0009] Preferably, the gear shaft is detachably connected between the two racks. Through holes are provided inside the slider. Both racks are detachably connected to the slider through the through holes of the slider.

[0010] Preferably, through holes are provided inside the U-shaped base. Threaded holes are provided inside the turntable. The upper end of the first rotating shaft has threads. The first rotating shaft is detachably connected to the U-shaped base through the through hole of the U-shaped base. The first rotating shaft is detachably connected to the turntable through the threaded hole of the turntable.

[0011] Preferably, through holes are provided inside the first driving motor. A plurality of fixing bolts are detachably connected to the first driving motor through the through holes of the first driving motor. The first driving motor is detachably connected to the U-shaped base through the through hole of the U-shaped base. The first driving motor is detachably connected to the U-shaped base through a plurality of fixing bolts.

[0012] Beneficial effects

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] 1. In the present utility model, through the provided tooth-shaped fixture, it can better adapt to parts of different shapes, and can differentially clamp parts similar to triangles, arcs, etc., so that a fulcrum is generated in the clamping state, thus avoiding the possible offset during the clamping process due to the strange shape of the parts, which may lead to a reduction in the processing quality of the parts.

[0015] 2. In the present utility model, through the provided gear shaft, when the second driving motor operates, it drives the gear shaft to rotate, thereby driving the front and rear two groups of racks to move closer to the middle respectively. In this way, it drives the sliders arranged on the outer sides of the two groups of racks to move closer, and further drives the toothed clamps arranged at the upper ends of the two groups of sliders to move closer, so as to clamp the parts placed on the placement table. This is more accurate and convenient than manual operation, and there will be no phenomenon that when manual tightening work is carried out, it is not easy to grasp the strength well, resulting in imprints being clamped on the surface of the workpiece and requiring secondary processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the structural schematic diagram of the charging board of the present utility model;

[0018] Figure 3 is the structural schematic diagram of the clamping device of the present utility model;

[0019] Figure 4 is the structural schematic diagram of the rotating device of the present utility model.

[0020] In the figure: 1, U-shaped base; 2, first driving motor; 3, installation groove; 4, fixing bolt; 5, first rotating shaft; 6, turntable; 7, second driving motor; 8, first mounting plate; 9, second rotating shaft; 10, connecting rotating hole; 11, bottom plate; 12, fixing plate; 13, slider; 14, rack; 15, toothed clamp; 16, second mounting plate; 17, limiting block; 18, gear shaft; 19, placement table; 20, mounting hole; 21, flat head screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Such as Figure 1 、 2, as shown in Figures 4, a positioning fixture for a five-axis machining center, stably places the part to be machined on the upper end of the placement table 19. If necessary, a plurality of flat head screws 21 can be disassembled, then the position of the placement table 19 can be adjusted, and then the flat head screws 21 are inserted into other mounting holes 20 provided inside the placement table 19 until they are connected and fixed to the fixing plate 12 provided at the lower end of the placement table 19, so as to prevent parts with strange shapes. After placing the parts, by starting the second drive motor 7, the second rotating shaft 9 rotates, thereby driving the bar to rotate, thereby driving the two racks 14 to move closer to the middle, and respectively driving the two racks 14 to move closer to the sliders 13 provided on the outer side, so as to drive the toothed fixtures 15 provided at the upper ends of the two sliders 13 to move closer, clamping the parts placed on the placement table 19. This is more accurate and convenient than manual operation, and there will be no phenomenon that when manual tightening work is carried out, it is not easy to grasp the strength well and cause marks to be clamped on the surface of the workpiece, resulting in the need for secondary processing. Moreover, through the provided toothed fixtures 15, it can better adapt to parts of different shapes, and can differentially clamp parts similar to triangles, arcs, etc., so that the clamping state generates a fulcrum, thus avoiding the possible offset during the clamping process due to the strange shape of the part, which may lead to a reduction in the machining quality of the part.

[0023] As Figure 2 , 3 , as shown in Figures 4, a positioning fixture for a five-axis machining center. After starting the first drive motor 2, the first rotating shaft 5 starts to operate, thereby driving the turntable 6 provided in the installation groove 3 to rotate, thereby driving the entire bottom plate 11 to rotate, so as to rotate the part to be machined. And by connecting the rotating hole 10, the U-shaped base 1 is connected to the five-axis machining center, and the entire U-shaped base 1 can be flipped, so as to adjust the flipping angle of the machined part and cooperate with the five-axis machining center for machining.

[0024] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning fixture for a five-axis machining center, comprising a U-shaped base (1), characterized in that: The inner side of the U-shaped base (1) is provided with a mounting groove (3), the inner side of the mounting groove (3) is provided with a turntable (6), the upper end of the turntable (6) is provided with a bottom plate (11), the upper end of the bottom plate (11) is provided with two groups of fixing plates (12), the upper ends of the two groups of fixing plates (12) are provided with a placement platform (19), the inner sides of the two groups of placement platforms (19) are provided with multiple groups of mounting holes (20), the inner sides of the multiple groups of mounting holes (20) are provided with three groups of flat head screws (21 ), a gear shaft (18) is arranged between the two groups of fixing plates (12), racks (14) are arranged at both the front and rear ends of the gear shaft (18), second mounting plates (16) are arranged on the relatively outer sides of the two groups of racks (14), limiting blocks (17) are arranged on the relatively inner ends of the two groups of racks (14), sliders (13) are arranged on the relatively outer ends of the two groups of racks (14), and toothed clamps (15) are arranged on the upper outer surfaces of the two groups of sliders (13).

2. A five-axis machining center positioning fixture according to claim 1, characterized in that: A first drive motor (2) is arranged at the lower end of the U-shaped base (1), a plurality of sets of fixing bolts (4) are arranged on the inner side of the first drive motor (2), a first rotating shaft (5) is arranged at the upper end of the first drive motor (2), a turntable (6) is arranged at the upper end of the first rotating shaft (5), a second drive motor (7) is arranged on the inner side of the turntable (6), a second rotating shaft (9) is arranged at the upper end of the second drive motor (7), a first mounting plate (8) is arranged on the inner side of the turntable (6), and connecting rotating holes (10) are arranged on both sides of the U-shaped base (1).

3. A five-axis machining center positioning fixture according to claim 1, characterized in that: The turntable (6) is detachably connected to the U-shaped base (1) via the mounting groove (3); a through hole is provided on the inner side of the fixing plate (12); a plurality of groups of flat head screws (21) are detachably connected to the placement table (19) via the mounting holes (20); the flat head screws (21) are detachably connected to the fixing plate (12) via the through holes of the fixing plate (12); and the placement table (19) is detachably connected to the fixing plate (12) via the flat head screws (21).

4. A five-axis machining center positioning fixture according to claim 1, characterized in that: The gear shaft (18) is detachably connected to the two groups of racks (14); a through hole is provided on the inner side of the slider (13); and the two groups of racks (14) are detachably connected to the slider (13) through the through hole of the slider (13).

5. The positioning fixture for a five-axis machining center according to claim 2, characterized in that: The inner side of the U-shaped base (1) is provided with a through hole, the inner side of the turntable (6) is provided with a threaded hole, the upper end of the first rotating shaft (5) is threaded, the first rotating shaft (5) is detachably connected to the U-shaped base (1) through the through hole of the U-shaped base (1), and the first rotating shaft (5) is detachably connected to the turntable (6) through the threaded hole of the turntable (6).

6. A five-axis machining center positioning fixture according to claim 2, characterized in that: A through hole is provided on the inner side of the first drive motor (2); a plurality of sets of fixing bolts (4) are detachably connected to the first drive motor (2) through the through hole of the first drive motor (2); the first drive motor (2) is detachably connected to the U-shaped base (1) through the through hole of the U-shaped base (1); the first drive motor (2) is detachably connected to the U-shaped base (1) through the plurality of sets of fixing bolts (4).

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