Clamp for numerical control machining center

Abstract

The utility model discloses a clamp for a numerical control machining center, and particularly relates to the technical field of clamps, the clamp comprises a machine tool, a supporting table is fixedly arranged at the upper end of the machine tool, a connecting shaft is inserted into the inner side of the supporting table, and a connecting frame is fixedly arranged at the upper end of the connecting shaft; a transverse rotating device capable of driving the connecting frame to transversely rotate is arranged at the upper end of the machine tool; a longitudinal rotating device capable of longitudinally rotating the clamped workpiece is arranged on the outermost side of the connecting frame; the longitudinal rotating device comprises an H-shaped sleeve, the H-shaped sleeve penetrates through the inner side of the supporting table, and the outer surface of the H-shaped sleeve is movably connected with the inner side of the supporting table. By arranging the transverse rotating device and the longitudinal rotating device, transverse and longitudinal rotating adjustment of the position of a workpiece is facilitated, the longitudinal rotating adjustment of the workpiece is matched with the transverse rotating device, the longitudinal and transverse steering effect of the workpiece can be achieved, and when a complex workpiece is machined, the complex work of repeated disassembling and clamping can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, and more specifically, to a clamp for a numerical control machining center. Background Art

[0002] The machining center is developed from the CNC milling machine. The biggest difference between the machining center and the CNC milling machine is that the machining center has the ability to automatically exchange machining tools. By installing tools of different purposes on the tool magazine, the machining tools on the spindle can be changed through the automatic tool changer in one clamping to achieve multiple machining functions; the CNC machining center is a high-efficiency automated machine tool composed of mechanical equipment and CNC systems suitable for machining complex parts. The CNC machining center is one of the most productive and widely used CNC machine tools in the world; when machining a workpiece, a fixture is needed to clamp the workpiece for further processing. For this purpose, a fixture is proposed for clamping the workpiece in the CNC machining center.

[0003] After searching, for example, a Chinese patent application with application number CN202222988248.6 discloses a special fixture for a coupling CNC machining center. By controlling the electric push rod, the fourth fixed block, the retraction rod and the second clamping block are driven to move left and right, and the couplings of different diameters are fixed by the first clamping block and the second clamping block, thereby reducing the limitations of the use of the device. At the same time, by turning the rotating handle, the rotating shaft and the active bevel gear are driven to rotate. The active bevel gear and the driven bevel gear are meshed and connected to each other, so that the driven bevel gear drives the connecting rod and the screw to rotate, and then the screw drives the first clamping block to move left and right with the cooperation of the first slider, and the processing position of the coupling is fine-tuned by the cooperation of the fourth fixed block and the retraction rod, thereby improving the convenience of use of the device and the processing accuracy of the coupling.

[0004] However, when the above technical solution is used, it can only rotate the clamped workpiece horizontally. As we all know, when processing workpieces, due to the different models and different processing parts, a fully angle-adjustable clamp is required. The above solution cannot achieve longitudinal rotation. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the embodiment of the utility model provides a clamp for a CNC machining center, and the technical problem to be solved is: the workpiece cannot be fully rotated, and some positions will be inconvenient to process during processing.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A fixture for a CNC machining center, comprising a machine tool:

[0007] A support platform is fixedly provided at the upper end of the machine tool, a connecting shaft is inserted into the inner side of the support platform, and a connecting frame is fixedly provided at the upper end of the connecting shaft;

[0008] The upper end of the machine tool is provided with a lateral rotation device capable of driving the connecting frame to rotate lateraly, and is used for lateral rotation adjustment of the connecting frame;

[0009] The outermost side of the connecting frame is provided with a longitudinal rotation device capable of longitudinally rotating the clamped workpiece, and is used for longitudinally rotating and adjusting the position of the workpiece;

[0010] The longitudinal rotation device includes an H-shaped sleeve, which passes through the inner side of the support platform. The outer surface of the H-shaped sleeve is movably connected to the inner side of the support platform. A cylinder is fixedly provided on one side of the H-shaped sleeve through a flange, and a connecting pipe is fixedly provided on the other side of the H-shaped sleeve. A transmission gear is fixedly provided on the outer surface of the connecting pipe.

[0011] In a preferred embodiment, the lateral rotation device includes a fixed frame, which is fixedly arranged on the upper end of the support platform, and a forward and reverse motor is fixedly arranged on one side of the fixed frame through a flange, and the output end of the forward and reverse motor passes through the inner side of the fixed frame, and a rotating rod is fixedly arranged on the output end of the forward and reverse motor.

[0012] In a preferred embodiment, a limit frame is movably provided on the outer surface of one end of the rotating rod, and the lower end of the limit frame is fixedly connected to the upper end of the supporting platform.

[0013] In a preferred embodiment, a worm is fixedly provided on the outer surface of the rotating rod, a worm wheel is fixedly provided on the outer surface of the connecting shaft, and the worm is meshingly connected with the worm wheel.

[0014] In a preferred embodiment, a telescopic rod is provided at the output end of the cylinder, the telescopic rod passes through the H-shaped sleeve and the inner side of the connecting pipe, and a clamping plate is fixedly provided at one end of the telescopic rod.

[0015] In a preferred embodiment, a rotating motor is fixedly provided on one side of the connecting frame via a flange, an output end of the rotating motor passes through the inner side of the connecting frame, a rotating gear is fixedly provided on the outer surface of the rotating motor, and the rotating gear is meshingly connected with a transmission gear.

[0016] In a preferred embodiment, a slide groove is provided inside the connecting frame, a debris collection box is movably provided inside the slide groove, and two limit plates are fixedly provided on the outer surface of the connecting shaft, and the two limit plates are respectively located at the upper and lower ends of the support platform.

[0017] Technical effects and advantages of the utility model:

[0018] 1. The utility model is provided with a transverse rotation device, which is conducive to the transverse rotation adjustment of the connecting frame, so that the workpiece can be adjusted transversely, making the workpiece processing more convenient. The positive and negative motors drive the rotating rod and the worm to rotate, so that the worm gear transmission rotates, thereby driving the connecting shaft to rotate. Because the outer surface of the connecting shaft is clamped on the support table by the limiting plate, the connecting shaft can achieve limited rotation, so the upper end of the connecting frame can be rotated transversely, so that the clamped workpiece can be clamped while the transverse angle can be adjusted;

[0019] 2. The utility model is provided with a longitudinal rotation device, which is conducive to longitudinal rotation adjustment of the workpiece position. In conjunction with the transverse rotation device, the workpiece can be turned in the longitudinal and transverse directions. When processing complex workpieces, the complicated work of repeated disassembly and clamping can be reduced. The cylinders on both sides of the connecting frame drive the telescopic rods to extend and retract at the same time to achieve the clamping of the workpiece. The rotating motor drives the rotating gear to rotate. Since the transmission gear and the connecting pipe are fixedly connected, the connecting pipe can rotate while the transmission drives the transmission gear. The H-type sleeve runs through the inner side of the connecting frame, so the connecting pipe can achieve limited rotation, thereby driving the workpiece clamped by the clamping plate to rotate longitudinally. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a side structural schematic diagram of the utility model.

[0022] Figure 3 It is a schematic diagram of the structure of the lateral rotating device of the utility model.

[0023] Figure 4 It is a schematic structural diagram of the longitudinal rotating device of the utility model.

[0024] The accompanying drawings are marked as follows: 1. machine tool; 2. horizontal rotating device; 3. longitudinal rotating device; 4. support table; 5. connecting frame; 6. debris collection box; 7. connecting shaft; 8. limit plate; 9. slide groove; 21. worm gear; 22. fixed frame; 23. forward and reverse motor; 24. rotating rod; 25. worm; 26. limit frame; 31. cylinder; 32. H-type sleeve; 33. connecting pipe; 34. telescopic rod; 35. clamping plate; 36. transmission gear; 37. rotating gear; 38. rotating motor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field of clamps without creative work are within the scope of protection of the utility model.

[0026] like Figure 1 and 2 As shown, the utility model provides a clamp for a CNC machining center, including a machine tool 1: a support platform 4 is fixedly provided on the upper end of the machine tool 1, a connecting shaft 7 is inserted into the inner side of the support platform 4, a connecting frame 5 is fixedly provided on the upper end of the connecting shaft 7, a slide groove 9 is opened on the inner side of the connecting frame 5, a debris collection box 6 is movably provided on the inner side of the slide groove 9, and two limit plates 8 are fixedly provided on the outer surface of the connecting shaft 7, and the two limit plates 8 are respectively located at the upper and lower ends of the support platform 4.

[0027] In order to be able to laterally rotate and adjust the clamped workpiece, a lateral rotation device 2 capable of driving the connecting frame 5 to laterally rotate is provided at the upper end of the machine tool 1, and is used to laterally rotate and adjust the connecting frame 5;

[0028] like Figure 3 As shown, the lateral rotation device 2 includes a fixed frame 22, which is fixedly arranged on the upper end of the support platform 4. A forward and reverse motor 23 is fixedly arranged on one side of the fixed frame 22 through a flange. The output end of the forward and reverse motor 23 passes through the inner side of the fixed frame 22, and a rotating rod 24 is fixedly arranged on the output end of the forward and reverse motor 23. A limit frame 26 is movably arranged on the outer surface of one end of the rotating rod 24, and the lower end of the limit frame 26 is fixedly connected to the upper end of the support platform 4. A worm 25 is fixedly arranged on the outer surface of the rotating rod 24, and a worm wheel 21 is fixedly arranged on the outer surface of the connecting shaft 7. The worm 25 is meshingly connected with the worm wheel 21. The rotating rod 24 and the worm 25 are driven to rotate by the forward and reverse motor 23, so that the worm wheel 21 is driven to rotate, thereby driving the connecting shaft 7 to rotate. Because the outer surface of the connecting shaft 7 is limited and clamped on the support platform 4 by the limit plate 8, the connecting shaft 7 can realize limited rotation, so the upper end of the connecting frame 5 can rotate horizontally, so that the clamped workpiece can realize the adjustment of the horizontal angle while clamping.

[0029] Furthermore, in order to be able to longitudinally rotate and adjust the clamped workpiece, a longitudinal rotating device 3 capable of longitudinally rotating the clamped workpiece is provided at the outermost side of the connecting frame 5, and is used to longitudinally rotate and adjust the position of the workpiece;

[0030] like Figure 4As shown, the longitudinal rotating device 3 includes an H-shaped sleeve 32, the H-shaped sleeve 32 passes through the inner side of the support platform 4, the outer surface of the H-shaped sleeve 32 is movably connected to the inner side of the support platform 4, a cylinder 31 is fixedly provided on one side of the H-shaped sleeve 32 through a flange, a connecting pipe 33 is fixedly provided on the other side of the H-shaped sleeve 32, a transmission gear 36 is fixedly provided on the outer surface of the connecting pipe 33, a telescopic rod 34 is transmission-equipped at the output end of the cylinder 31, the telescopic rod 34 passes through the H-shaped sleeve 32 and the inner side of the connecting pipe 33, a clamping plate 35 is fixedly provided at one end of the telescopic rod 34, a rotating motor 38 is fixedly provided on one side of the connecting frame 5 through a flange, and the rotating motor 38 outputs The output end passes through the inner side of the connecting frame 5, and a rotating gear 37 is fixedly provided on the outer surface of the rotating motor 38. The rotating gear 37 and the transmission gear 36 are meshingly connected. The telescopic rod 34 is driven to extend and retract simultaneously through the cylinders 31 on both sides of the connecting frame 5 to achieve the clamping of the workpiece. The rotating motor 38 drives the rotating gear 37 to rotate. Since the transmission gear 36 is fixedly connected to the connecting pipe 33, the connecting pipe 33 can rotate while the transmission drives the transmission gear 36. The H-shaped sleeve 32 passes through the inner side of the connecting frame 5, so the connecting pipe 33 can achieve limited rotation, thereby driving the workpiece clamped by the clamping plate 35 to rotate longitudinally.

[0031] The working principle is as follows: when the utility model is in use, the workpiece to be processed is clamped and fixed by the cylinder 31, the telescopic rod 34 and the clamping plate 35. The workpiece angle needs to be adjusted during the processing, so the horizontal rotation device 2 and the longitudinal rotation device 3 are used to adjust the workpiece vertically and horizontally, which improves the convenience of the utility model and reduces the complicated process of manual disassembly and multiple clamping of the workpiece. The utility model is suitable for workpieces of various models, which improves the practicality of the utility model.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixture for a CNC machining center, comprising a machine tool (1), characterized in that: A support platform (4) is fixedly provided at the upper end of the machine tool (1), a connecting shaft (7) is inserted into the inner side of the support platform (4), and a connecting frame (5) is fixedly provided at the upper end of the connecting shaft (7); The upper end of the machine tool (1) is provided with a lateral rotation device (2) capable of driving the connecting frame (5) to lateral rotate, and is used for lateral rotation adjustment of the connecting frame (5); The outermost side of the connecting frame (5) is provided with a longitudinal rotation device (3) capable of longitudinally rotating the clamped workpiece, and is used for longitudinally rotating and adjusting the position of the workpiece; The longitudinal rotation device (3) comprises an H-shaped sleeve (32), the H-shaped sleeve (32) passes through the inner side of the support platform (4), the outer surface of the H-shaped sleeve (32) is movably connected to the inner side of the support platform (4), a cylinder (31) is fixedly provided on one side of the H-shaped sleeve (32) via a flange, a connecting pipe (33) is fixedly provided on the other side of the H-shaped sleeve (32), and a transmission gear (36) is fixedly provided on the outer surface of the connecting pipe (33).

2. A fixture for a CNC machining center according to claim 1, characterized in that: The lateral rotation device (2) comprises a fixed frame (22), the fixed frame (22) is fixedly arranged on the upper end of the support platform (4), a forward and reverse motor (23) is fixedly arranged on one side of the fixed frame (22) via a flange, an output end of the forward and reverse motor (23) passes through the inner side of the fixed frame (22), and a rotating rod (24) is fixedly arranged on the output end of the forward and reverse motor (23).

3. A fixture for a CNC machining center according to claim 2, characterized in that: A limiting frame (26) is movably provided on the outer surface of one end of the rotating rod (24), and the lower end of the limiting frame (26) is fixedly connected to the upper end of the supporting platform (4).

4. The fixture for a CNC machining center according to claim 2, characterized in that: A worm (25) is fixedly provided on the outer surface of the rotating rod (24), a worm wheel (21) is fixedly provided on the outer surface of the connecting shaft (7), and the worm (25) is meshingly connected with the worm wheel (21).

5. The fixture for a CNC machining center according to claim 1, characterized in that: The output end of the cylinder (31) is provided with a telescopic rod (34), which passes through the inner side of the H-shaped sleeve (32) and the connecting pipe (33), and one end of the telescopic rod (34) is fixed with a clamping plate (35).

6. The fixture for a CNC machining center according to claim 1, characterized in that: A rotating motor (38) is fixedly provided on one side of the connecting frame (5) via a flange, an output end of the rotating motor (38) passes through the inner side of the connecting frame (5), a rotating gear (37) is fixedly provided on the outer surface of the rotating motor (38), and the rotating gear (37) is meshingly connected with a transmission gear (36).

7. The fixture for a CNC machining center according to claim 1, characterized in that: A slide groove (9) is provided on the inner side of the connecting frame (5), a debris collection box (6) is movably provided on the inner side of the slide groove (9), and two limit plates (8) are fixedly provided on the outer surface of the connecting shaft (7), and the two limit plates (8) are respectively located at the upper and lower ends of the support platform (4).

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