Workpiece clamping device for drilling and tapping center

Abstract

The utility model relates to the technical field of clamping devices, and discloses a workpiece clamping device for a drilling and tapping center, which solves the problems that the positioning effect is poor and the positioning stability cannot be ensured due to the fact that the conventional clamping device performs positioning in an opposite-side clamping mode and a single opposite-side clamping positioning mode is adopted, and comprises a workbench, fixed supporting legs are fixedly installed at the four corners of the bottom of the workbench, fixed supporting feet are fixedly installed at the bottoms of the fixed supporting legs, fixed connecting frames are fixedly installed on the two sides of the top of the workbench, and driving air cylinders are fixedly installed on the tops of the fixed connecting frames. The transmission ends of the driving air cylinders extend into the fixed connecting frame and are fixedly provided with first connecting plates, and fixed connecting rods are fixedly installed at the four corners of the bottoms of the two first connecting plates. The clamping device can be used for positioning in a two-side clamping and top pressing manner, so that the positioning stability is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamping devices, in particular to a workpiece clamping device for a drilling and tapping center. Background Art

[0002] A drilling and tapping center is a machine tool for cutting metal, also commonly known as a "drilling, milling and tapping center. It is mainly used for processing light and small metals and is not suitable for heavy cutting. It usually uses a clamping arm tool magazine or a servo tool magazine. When using a drilling center, it needs to be used with a clamping device to ensure that the workpiece is positioned during the drilling operation. The existing clamping device uses the opposite side clamping method for positioning, but the positioning effect of the single opposite side clamping positioning method is not good and cannot ensure the stability during positioning. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a workpiece clamping device for a drilling and tapping center, which effectively solves the problem that the existing clamping device is positioned by adopting the opposite side clamping method, while the positioning effect of the single opposite side clamping positioning method is poor and the stability during positioning cannot be ensured.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a workpiece clamping device for a drilling and tapping center, comprising a workbench, wherein fixed support legs are fixedly installed at the four corners of the bottom of the workbench, fixed support feet are fixedly installed at the bottom of the fixed support legs, fixed connecting frames are fixedly installed on both sides of the top of the workbench, driving cylinders are fixedly installed on the top of the fixed connecting frames, the transmission ends of the driving cylinders extend to the interior of the fixed connecting frames and are fixedly installed with first connecting plates, fixed connecting rods are fixedly installed at the four corners of the bottom of the two first connecting plates, a second connecting plate is fixedly installed between the bottoms of the four fixed connecting rods at the bottom of the same first connecting plate, and a stable clamping assembly is provided between the two second connecting plates and the two first connecting plates.

[0005] Preferably, the two stable clamping assemblies each include a driving motor and two limiting slide grooves, the two driving motors are respectively fixedly mounted on the middle part of the bottom of the two first connecting plates, a rotating disk is fixedly mounted on the output ends of the two driving motors, a positioning shaft seat is rotatably mounted on the bottom of the rotating disk, the bottom of the positioning shaft seat is fixedly connected to the middle part of the top of the second connecting plate, and four limiting slide grooves are respectively opened on both sides of the surface of the two second connecting plates.

[0006] Preferably, two first rotating shafts are symmetrically rotatably installed on the upper sides of the two rotating disks, a transmission rod is rotatably installed on the top of the first rotating shaft, a second rotating shaft is rotatably installed on the lower side of the transmission rod away from one end of the rotating disk, and a first connecting block is rotatably installed on the bottom of the second rotating shaft.

[0007] Preferably, a first limiting plate is fixedly installed on the bottom of the first connecting block, a sliding block is fixedly installed on the bottom of the first limiting plate, the sliding block is installed inside the limiting slide groove, a second limiting plate is fixedly installed on the bottom of the sliding block, a second connecting block is fixedly installed on the bottom of the second limiting plate, a clamping plate is fixedly installed on the bottom of the second connecting block, and a friction pad is fixedly installed on one side of the clamping plate.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: the operator places the workpiece on the workbench, and then the operator starts two driving cylinders to drive the two first connecting plates to move downward, and when the first connecting plates move downward, the second connecting plates are driven downward by the fixed connecting rods, and when the two second connecting plates move downward, the two ends of the workpiece are pressed and positioned;

[0009] After the two ends of the workpiece are pressed and positioned, the operator starts the two driving motors to drive the two rotating disks to rotate along the two positioning shaft seats. When the rotating disks rotate, the first connecting block is pulled inward by the transmission rod. When the first connecting block moves, the sliding block is driven to slide along the inside of the limiting slide groove through the first limiting plate. When the sliding block moves, the second connecting block is driven to move through the second limiting plate. When the second connecting block moves, the clamping plate and the friction pad are driven to clamp the two sides of the workpiece, thereby further improving the positioning effect; the clamping device can be positioned by clamping on both sides and pressing on the top, thereby ensuring stability during positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0011] In the attached picture:

[0012] Figure 1 This is a schematic diagram of the structure of a workpiece clamping device for a drilling and tapping center of the utility model;

[0013] Figure 2 The local structure diagram of the workpiece clamping device for the drilling and tapping center of the utility model Figure 1 ;

[0014] Figure 3 The local structure diagram of the workpiece clamping device for the drilling and tapping center of the utility model Figure 2 ;

[0015] Figure 4 The local structure diagram of the workpiece clamping device for the drilling and tapping center of the utility model Figure 3 ;

[0016] In the figure: 1. workbench; 2. fixed supporting legs; 3. fixed supporting feet; 4. fixed connecting frame; 5. driving cylinder; 6. first connecting plate; 7. fixed connecting rod; 8. driving motor; 9. rotating disk; 10. positioning shaft seat; 11. first rotating shaft; 12. transmission rod; 13. second rotating shaft; 14. first connecting block; 15. limiting slide groove; 16. sliding block; 17. second limiting plate; 18. clamping plate; 19. friction pad; 20. second connecting plate; 21. first limiting plate; 22. second connecting block. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0018] Depend on Figures 1 to 4 The utility model includes a workbench 1, wherein fixed supporting legs 2 are fixedly installed at the four corners of the bottom of the workbench 1, fixed supporting feet 3 are fixedly installed at the bottom of the fixed supporting legs 2, fixed connecting frames 4 are fixedly installed on both sides of the top of the workbench 1, driving cylinders 5 are fixedly installed on the top of the fixed connecting frames 4, and the driving ends of the driving cylinders 5 extend to the interior of the fixed connecting frames 4 and are fixedly installed with first connecting plates 6, fixed connecting rods 7 are fixedly installed at the four corners of the bottom of the two first connecting plates 6, second connecting plates 20 are fixedly installed between the bottoms of the four fixed connecting rods 7 at the bottom of the same first connecting plate 6, and a stabilizing clamping assembly is provided between the two second connecting plates 20 and the two first connecting plates 6.

[0019] The operator places the workpiece on the workbench 1, and then starts the two driving cylinders 5 to drive the two first connecting plates 6 to move downward. When the first connecting plates 6 move downward, they drive the second connecting plates 20 to move downward through the fixed connecting rods 7. When the two second connecting plates 20 move downward, they will press and position the two ends of the workpiece. After pressing and positioning the two ends of the workpiece, the operator starts the two stable clamping components to clamp the two sides of the workpiece, thereby further improving the positioning effect; the clamping device can be positioned by clamping on both sides and pressing on the top, thereby ensuring stability during positioning.

[0020] The two stable clamping components each include a driving motor 8 and two limiting slide grooves 15. The two driving motors 8 are respectively fixedly mounted at the middle of the bottom of the two first connecting plates 6. The output ends of the two driving motors 8 are fixedly mounted with a rotating disk 9. The bottom of the rotating disk 9 is rotatably mounted with a positioning shaft seat 10. The bottom of the positioning shaft seat 10 is fixedly connected to the middle of the top of the second connecting plate 20. Four limiting slide grooves 15 are respectively opened on both sides of the surface of the two second connecting plates 20; the upper sides of the two rotating disks 9 are symmetrically rotatably mounted with two first rotating shafts 11, and the tops of the first rotating shafts 11 are rotatably mounted with transmission rods 12. The transmission rods A second rotating shaft 13 is rotatably mounted on the lower side of one end of 12 away from the rotating disk 9, and a first connecting block 14 is rotatably mounted on the bottom of the second rotating shaft 13; a first limiting plate 21 is fixedly mounted on the bottom of the first connecting block 14, a sliding block 16 is fixedly mounted on the bottom of the first limiting plate 21, and the sliding block 16 is installed inside the limiting slide groove 15, a second limiting plate 17 is fixedly mounted on the bottom of the sliding block 16, a second connecting block 22 is fixedly mounted on the bottom of the second limiting plate 17, a clamping plate 18 is fixedly mounted on the bottom of the second connecting block 22, and a friction pad 19 is fixedly mounted on one side of the clamping plate 18.

[0021] The operator starts the two driving motors 8 to drive the two rotating disks 9 to rotate along the two positioning shaft seats 10. When the rotating disks 9 rotate, the transmission rod 12 pulls the first connecting block 14 to move inward. When the first connecting block 14 moves, the sliding block 16 is driven to slide along the inside of the limiting slide groove 15 through the first limiting plate 21. When the sliding block 16 moves, the second connecting block 22 is driven to move through the second limiting plate 17. When the second connecting block 22 moves, the clamping plate 18 and the friction pad 19 are driven to clamp both sides of the workpiece, thereby further improving the positioning effect.

Claims

1. A workpiece clamping device for a drilling and tapping center, comprising a worktable (1), characterized in that: The four corners of the bottom of the workbench (1) are fixedly mounted with fixed support legs (2), the bottom of the fixed support legs (2) are fixedly mounted with fixed support feet (3), both sides of the top of the workbench (1) are fixedly mounted with fixed connecting frames (4), the top of the fixed connecting frames (4) are fixedly mounted with driving cylinders (5), the transmission ends of the driving cylinders (5) extend into the interior of the fixed connecting frames (4) and are fixedly mounted with first connecting plates (6), the four corners of the bottom of the two first connecting plates (6) are fixedly mounted with fixed connecting rods (7), the bottoms of the four fixed connecting rods (7) at the bottom of the same first connecting plate (6) are fixedly mounted with second connecting plates (20), and a stabilizing clamping assembly is provided between the two second connecting plates (20) and the two first connecting plates (6).

2. A workpiece clamping device for a drilling and tapping center according to claim 1, characterized in that: The two stable clamping assemblies each comprise a driving motor (8) and two limiting slide grooves (15), the two driving motors (8) are respectively fixedly mounted at the middle of the bottom of the two first connecting plates (6), the output ends of the two driving motors (8) are both fixedly mounted with a rotating disk (9), the bottom of the rotating disk (9) is rotatably mounted with a positioning shaft seat (10), the bottom of the positioning shaft seat (10) is fixedly connected to the middle of the top of the second connecting plate (20), and the four limiting slide grooves (15) are respectively opened on both sides of the surface of the two second connecting plates (20).

3. A workpiece clamping device for a drilling and tapping center according to claim 2, characterized in that: Two first rotating shafts (11) are symmetrically rotatably mounted on the upper sides of the two rotating disks (9), a transmission rod (12) is rotatably mounted on the top of the first rotating shaft (11), a second rotating shaft (13) is rotatably mounted on the lower side of one end of the transmission rod (12) away from the rotating disk (9), and a first connecting block (14) is rotatably mounted on the bottom of the second rotating shaft (13).

4. A workpiece clamping device for a drilling and tapping center according to claim 3, characterized in that: The bottom of the first connecting block (14) is fixedly mounted with a first limiting plate (21), the bottom of the first limiting plate (21) is fixedly mounted with a sliding block (16), the sliding block (16) is installed inside the limiting slide groove (15), the bottom of the sliding block (16) is fixedly mounted with a second limiting plate (17), the bottom of the second limiting plate (17) is fixedly mounted with a second connecting block (22), the bottom of the second connecting block (22) is fixedly mounted with a clamping plate (18), and one side of the clamping plate (18) is fixedly mounted with a friction pad (19).

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