Back pull locking device for er or sk collets

Abstract

This invention discloses a pull-locking device for ER or SK chucks, characterized by: a sleeve and a clamping head located at the front end of the sleeve; a space for accommodating the ER or SK chuck is formed between the sleeve and the clamping head; the space has a front conical hole and a rear conical hole matching the front and rear conical surfaces of the chuck, and a retaining ring for limiting the chuck position; the front conical hole and retaining ring are located in the clamping head, and the rear conical hole is located in the sleeve; a pull rod hole is provided in the middle and rear section of the sleeve; a sliding sleeve is threadedly connected to the clamping head; the sliding sleeve is axially slidable on a sliding post at the front end of the sleeve; the rear end of the sliding sleeve is held by multiple pull rods; the multiple pull rods surround the outer circumference of the sliding post and move through the pull rod holes; a pull plate is provided at the rear end of the sleeve; the pull plate can be pulled backward relative to the sleeve; the pull plate is connected to the pull rods. This invention is used on grinding machines for grinding milling cutters, drill bits, and other cutting tools, enabling rapid and automatic tool clamping and greatly improving work efficiency.

Description

Technical Field

[0001] This invention relates to a locking device for clamping cutting tools on a knife grinding machine. Background Technology

[0002] Milling cutters, drill bits, and other shank-operated cutting tools often require sharpening of their cutting edges after a period of use, which can be done using a sharpening machine. On a sharpening machine, each time a tool is sharpened, a chuck is used to clamp the shank of the tool. Currently, clamping the tool with the chuck is done manually, which is particularly inefficient when using ER or SK type chucks. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a pull-back locking device for ER or SK chucks that can quickly and automatically clamp tools on a grinding machine for grinding milling cutters, drill bits and other cutting tools, thereby greatly improving work efficiency.

[0004] This invention is implemented through the following technical solutions: A pull-locking device for ER or SK chucks, characterized in that: it includes a sleeve and a clamping head located at the front end of the sleeve, with a space between the sleeve and the clamping head for accommodating the ER or SK chuck. The space has a front conical hole and a rear conical hole matching the front and rear conical surfaces of the chuck, and a retaining ring for limiting the chuck position. The front conical hole and retaining ring are located in the clamping head, and the rear conical hole is located in the sleeve. A pull rod hole is provided in the middle and rear section of the sleeve. The clamping head is threadedly connected to a sliding sleeve, which is axially slidable on a sliding post at the front end of the sleeve. The rear end of the sliding sleeve is held together by multiple pull rods, which surround the outer circumference of the sliding post and move through the pull rod hole. A pull plate is provided at the rear end of the sleeve, which can be pulled backward relative to the sleeve. The pull plate is connected to the pull rod. When the pull plate is pulled backward during operation, the clamping head moves backward through the pull rod and the sliding sleeve, and the clamping head pushes the chuck, making the elastic inner hole of the chuck smaller.

[0005] Furthermore, the backward pulling of the plate is actuated by a cylinder, and the plate and the cylinder are rotatably connected.

[0006] Furthermore, the pull rod has four or more bars.

[0007] Furthermore, the outer circumference of the middle section of the sleeve is provided with a bearing mounting position, and the outer circumference of the rear section is provided with a pulley mounting position.

[0008] With the above technical solution, the ER or SK chuck is placed in the clamping head in advance. The chuck is limited by a retaining ring, and the clamping head is screwed onto the sliding sleeve to initially clamp the chuck. When grinding tools, the shank of the milling cutter, drill bit, or other tool is inserted into the elastic inner hole of the chuck. Then, the actuator pulls the pull plate backward. The pull plate drives the clamping head backward through the pull rod and the sliding sleeve. The clamping head then uses the cooperation of its front and rear tapered holes to push the chuck, making the diameter of the elastic inner hole of the chuck smaller. In this way, the tool shank is secured, and the next step is to perform the tool grinding operation. The entire process realizes rapid automatic clamping of tools, thereby greatly improving work efficiency. Attached Figure Description

[0009] The present invention includes the following figures: Figure 1 This is a schematic diagram of the structure of the present invention. Figure 2 This is a diagram showing the installation and use of the present invention on a knife grinding machine.

[0010] In the diagram: 1. Chuck; 2. Sliding sleeve; 3. Clamping head; 31. Front conical hole; 32. Snap ring; 4. Sliding column; 5. Tie rod; 6. Sleeve; 61. Rear conical hole; 7. Limiting end cap; 8. Pull plate; 9. Wall plate; 10. Rolling bearing; 11. Transmission pulley; 12. Bearing plate; 13. End face bearing; 14. Support plate; 15. Cylinder; 16. Movable slide plate. Detailed Implementation

[0011] like Figure 1-2As shown, the rear-pull locking device for ER or SK chucks of the present invention includes a sleeve 6 and a clamping head 3 located at the front end of the sleeve 6. The sleeve 6 and the clamping head 3 enclose a space for accommodating the ER or SK chuck 1. The space has a front conical hole 31 and a rear conical hole 61 that match the front and rear conical surfaces of the chuck 1, and a retaining ring 32 for limiting the chuck 1. The front conical hole 31 and the retaining ring 32 are located in the clamping head 3, and the rear conical hole 61 is located in the sleeve 6. A pull rod hole is provided in the middle and rear section of the sleeve 6. A sliding sleeve 2 is threadedly connected to the clamping head 3. The sliding sleeve 2 is axially slidable on a sliding post 4 at the front end of the sleeve 6. The rear end of the sliding sleeve 2 is held by four pull rods 5. The four pull rods 5 surround the outer circumference of the sliding post 4 and pass through the pull rod hole. A bearing mounting position is provided on the outer circumference of the middle section of the sleeve 6 for mounting a rolling bearing 10. The rear end of the sleeve 6... The outer circumference of the sleeve 6 is provided with a pulley mounting position for mounting the transmission pulley 11. The rear end of the sleeve 6 is provided with a pull plate 8 and a limiting end cap 7. The limiting end cap 7 is located between the sleeve 6 and the pull plate 8, and is fixedly connected to the sleeve 6. The pull plate 8 is movably positioned and can be pulled backward relative to the sleeve 6. The pull plate 8 is connected to the pull rod 5. The backward pulling of the pull plate 8 is executed by the cylinder 15. During operation, when the pull plate 8 is pulled backward, the clamping head 3 moves backward through the pull rod 5 and the sliding sleeve 2. The clamping head 3 pushes the chuck 1, making the elastic inner hole of the chuck 1 smaller, thus allowing the chuck 1 to quickly and automatically clamp the tool. The pull plate 8 and the cylinder 15 are rotatably connected. Specifically, the pull plate 8 is fixedly connected to the bearing plate 12, and an end face bearing 13 is installed inside the bearing plate 12. The push rod of the cylinder 15 is engaged with the inner hole of the end face bearing 13. This invention is installed on a grinding machine as follows: Figure 2 As shown, the sleeve 6 is installed in the inner hole of the rolling bearing 10, the rolling bearing 10 is installed in the inner hole of the wall plate 9, the wall plate 9 is fixed on the movable slide 16 of the grinding machine, and a bracket plate 14 is fixedly connected to one side of the wall plate 9. The cylinder 15 is fixedly installed on the bracket plate 14. In this way, when grinding is in progress, after the tool is clamped, the transmission pulley 11 drives the sleeve 6, the chuck 1 and the tool to rotate. Then, by moving the movable slide 16, the grinding wheel can grind the cutting edge of the tool.

[0012] The invention is used as follows: ER or SK collet 1 is placed inside clamping head 3, collet 1 is limited by retaining ring 32, and clamping head 3 is threaded onto sliding sleeve 2; when grinding tools, the shank of milling cutter, drill bit, or other tool is inserted into the inner hole of collet 1, and then the cylinder 15 is used to pull the pull plate 8 backward. The pull plate 8 will drive the clamping head 3 to move backward through the pull rod 5 and sliding sleeve 2. Thus, the clamping head 3 uses the cooperation of its front tapered hole 31 and rear tapered hole 61 to axially push collet 1, making the elasticity of the inner hole of collet 1 smaller, so that the tool shank is clamped. After the tool is clamped, the transmission pulley 11 drives the sleeve 6, collet 1, and tool to rotate. Then, the longitudinal and lateral movement of the movable slide 16 is used to grind the tool edge with the grinding wheel. The entire process realizes the rapid automatic clamping of the tool, thereby greatly improving work efficiency.

Claims

1. A pull-back locking device for ER or SK chucks, characterized in that: The device includes a sleeve and a clamping head located at the front end of the sleeve. A space is formed between the sleeve and the clamping head to accommodate an ER or SK chuck. This space has a front conical hole and a rear conical hole that match the front and rear conical surfaces of the chuck, as well as a retaining ring for chuck positioning. The front conical hole and retaining ring are located on the clamping head, and the rear conical hole is located on the sleeve. A pull rod hole is provided in the middle and rear section of the sleeve. The clamping head is threadedly connected to a sliding sleeve, which is axially slidable on a sliding post at the front end of the sleeve. The rear end of the sliding sleeve is held in place by multiple pull rods. These pull rods surround the outer circumference of the sliding post and move through the pull rod holes. A pull plate is provided at the rear end of the sleeve, which can be pulled backward relative to the sleeve. The pull plate is connected to the pull rods. During operation, when the pull plate is pulled backward, it drives the clamping head backward via the pull rods and the sliding sleeve. The clamping head pushes the chuck, reducing the elastic inner hole of the chuck.

2. The pull-back locking device for ER or SK chucks as described in claim 1, characterized in that: The backward pulling of the plate is actuated by a cylinder, and the plate and the cylinder are rotatably connected.

3. The pull-back locking device for ER or SK chucks as described in claim 1 or 2, characterized in that: The pull rod has four or more bars.

4. The pull-back locking device for ER or SK chucks as described in claim 1, characterized in that: The outer circumference of the middle section of the sleeve is provided with a bearing mounting position, and the outer circumference of the rear section is provided with a pulley mounting position.

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