A new type of T-block tension knife rest device

Abstract

The application discloses a novel T-shaped block tensioning tool rest device, which comprises a slide rest and a tool rest, the slide rest is installed in the tool rest and slides up and down in the tool rest, the top of the slide rest is provided with an oil cylinder with a piston rod, the top of the oil cylinder is provided with an oil cylinder cover, and the oil cylinder is connected with a hydraulic system; an axle sleeve is installed in the cavity at the upper end of the slide rest, and a disc spring is arranged in the axle sleeve; a locking nut is installed in the axle sleeve above the disc spring; a rod is arranged in the inner cavity of the slide rest, the lower end of the rod is fixedly connected with the lower end of a pull rod, the pull rod is matched with the disc spring, the axle sleeve and the locking nut, and the upper end of the pull rod is located at the center of the piston rod in the oil cylinder; the lower end of the rod is fixedly connected with a T-shaped pull rod, a gear disc seat is matched and arranged between the lower side of the T-shaped pull rod and the inner wall of the slide rest, the bottom of the gear disc seat is fixedly connected with a gear disc, and the gear disc is connected with a tool holder through the gear disc on the tool holder. The application effectively improves the tool changing efficiency, tool changing precision and tool changing stability.

Description

Technical Field

[0001] This invention relates to a novel T-block tensioning tool holder device, belonging to the field of machine tool technology. Background Technology

[0002] The tool post is an important component of machine tools, and a core component of machine tools such as turning and grinding machines and machining centers. The tool post accessory head spindle pull-out mechanism is generally divided into manual tool changer and automatic tool changer. Manual tool changer requires a high level of skill from the operator, is labor-intensive, and is cumbersome to operate. Automatic tool changer generally uses the reciprocating motion of a hydraulic cylinder to change the tool, but it occupies a large space, is costly, and has a high risk of tool drop.

[0003] During the machining process on a machine tool, different cutting tools are required for different processes, and the workpieces being machined also vary. Therefore, tool changes are necessary frequently. As a result, the tool changing structure is particularly important and is a crucial component of machining equipment. Manual tool changing and traditional taper shank broaching tool changing mechanisms have serious shortcomings in terms of both efficiency and accuracy. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a novel T-block tensioning tool holder device, which effectively improves tool changing efficiency, tool changing accuracy and tool changing stability.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a novel T-block tensioning tool holder device, including a slide and a tool holder, the slide being installed inside the tool holder, the slide being arranged vertically, a hydraulic cylinder with a piston rod being installed at the top of the slide, a hydraulic cylinder cover being installed at the top of the hydraulic cylinder, and the hydraulic cylinder being connected to a hydraulic system; a bushing being installed in the cavity at the upper end of the slide, a disc spring being installed in the bushing; and a locking nut being installed in the bushing above the disc spring.

[0006] A rod is installed inside the ram cavity. The upper end of the rod is fixedly connected to the lower end of the pull rod. The pull rod passes through a disc spring, a bushing, and a locking nut. The upper end of the pull rod rests against the center of the piston rod in the oil cylinder. Oil is injected through the oil hole on the cylinder cover, causing the piston rod to move downward. The lower end of the piston rod rests against the upper end of the pull rod, and the piston rod pushes the pull rod downward. The pull rod then drives the rod downward.

[0007] The lower end of the rod is fixedly connected to a T-shaped pull rod. The rod drives the T-shaped pull rod to move downward, thereby releasing the blade. A toothed disc seat is fitted between the lower part of the T-shaped pull rod and the inner wall of the slide block. The bottom of the toothed disc seat is fixedly connected to the toothed disc, which is then connected to the blade holder through the toothed disc on the blade holder.

[0008] Furthermore, the upper end of the piston rod protrudes from the cylinder cover, facilitating the installation of a detection switch.

[0009] Furthermore, an adjustment plate is fixed at the lower position inside the oil cylinder, and the oil cylinder is fixedly connected to the top of the slide block through the adjustment plate and the bushing.

[0010] Furthermore, the upper and lower ends of the disc spring abut against the bottom end of the locking nut and the upper end of the bottom block of the pull rod, respectively; the upper end of the disc spring abuts against the locking nut, and the internal thread of the locking nut is fixedly connected to the pull rod by the thread; the disc spring drives the pull rod to move upward through the locking nut and pushes the piston rod, while the pull rod moves upward to pull the rod, and the rod pulls the T-shaped pull rod.

[0011] Furthermore, the hydraulic cylinder needs to be continuously filled with oil through the oil hole on the cylinder cover in order to move the T-shaped tie rod downwards to release the cutter. When no oil is added, the disc spring on the cylinder cover naturally relaxes. The disc spring pushes the locking nut upwards, thereby driving the tie rod to move upwards. The tie rod drives the rod, which in turn drives the T-shaped tie rod to pull the cutter, realizing mechanical locking and hydraulic release, ensuring that there is no risk of the cutter falling off after a hydraulic failure.

[0012] Furthermore, the gear disc engages with the matching gear disc on the tool holder to achieve more precise broaching, ensuring the accuracy of the tool holder after broaching, thereby further improving machining accuracy.

[0013] The beneficial effects of this invention are: in actual use, this invention significantly improves tool changing efficiency, tool changing accuracy, and tool changing stability, and has strong versatility; the T-shaped tie rod has high strength, which can improve the tensioning strength and meet the requirements of high torque cutting; it effectively solves the problems of insufficient tool strength and insufficient tool changing accuracy of traditional machine tool tool holders, improves stability and processing efficiency, while also reducing labor intensity, improving cutting performance, increasing tool life, reducing tool wear, and saving processing costs. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the hydraulic cylinder part of the present invention.

[0017] Figure 3 This is a schematic diagram of the adjustment dial of the present invention.

[0018] Figure 4 This is a schematic diagram of the pull rod of the present invention.

[0019] Figure 5 This is a schematic diagram of the T-shaped tie rod of the present invention.

[0020] Figure 6 This is a schematic diagram of the toothed disc holder of the present invention.

[0021] Numbering on the map: 1. Cylinder head; 2. Cylinder; 3. Adjusting plate; 4. Piston rod; 5. Disc spring; 6. Tie rod; 7. Slide ram; 8. Rod; 9. Tool post; 10. T-shaped tie rod; 11. Gear plate seat; 12. Gear plate; 13. Locking nut; 14. Bushing. Detailed Implementation

[0022] like Figure 1 As shown in Figure 6, a novel T-block tensioning tool holder device includes a slide ram 7 and a tool holder 9. The slide ram 7 is installed inside the tool holder 9 and is arranged vertically. A hydraulic cylinder 2 with a piston rod 4 is installed on the top of the slide ram 7. A hydraulic cylinder cover 1 is installed on the top of the hydraulic cylinder 2, and the hydraulic cylinder 2 is connected to a hydraulic system. The upper end of the piston rod 4 protrudes from the hydraulic cylinder cover 1 and can be connected to a detection switch. A bushing 14 is installed in the upper cavity inside the slide ram 7, and a disc spring 5 is installed in the bushing 14. A locking nut 13 is installed in the bushing 14 above the disc spring 5. An adjusting plate 3 is fixed at the lower position inside the hydraulic cylinder 2, and the hydraulic cylinder 2 is fixedly connected to the top of the slide ram 7 through the bushing 14 via the adjusting plate 3.

[0023] A rod 8 is installed in the inner cavity of the slide ram 7. The upper end of the rod 8 is fixedly connected to the lower end of the pull rod 6. The pull rod 6 passes through the disc spring 5, the bushing 14 and the locking nut 13. The upper end of the pull rod 6 is pressed against the center of the piston rod 4 in the oil cylinder 2. Oil is injected into the oil hole on the oil cylinder cover 1 to make the piston rod 4 move downward. The lower end of the piston rod 4 is pressed against the upper end of the pull rod 6. The piston rod 4 pushes the pull rod 6 to move downward, and the pull rod 6 drives the rod 8 to move downward.

[0024] The lower end of the lever 8 is fixedly connected to the T-shaped pull rod 10. The lever 8 drives the T-shaped pull rod 10 to move downward, thereby releasing the blade. A toothed disc seat 11 is fitted between the lower part of the T-shaped pull rod 10 and the inner wall of the slide ram 7. The bottom of the toothed disc seat 11 is fixedly connected to the toothed disc 12, which is then connected to the blade holder through the toothed disc on the blade holder.

[0025] The upper and lower ends of the disc spring 5 abut against the bottom end of the locking nut 13 and the upper end of the bottom block of the pull rod 6, respectively; the upper end of the disc spring 5 abuts against the locking nut 13, and the internal thread of the locking nut 13 is fixedly connected to the pull rod 6 by the thread; the disc spring 5 drives the pull rod 6 to move upward through the locking nut 13 and pushes the piston rod 4, while the pull rod 6 moves upward to pull the rod 8, and the rod 8 pulls the T-shaped pull rod 10.

[0026] The hydraulic cylinder 2 needs to be continuously filled with oil through the oil hole on the cylinder cover 1 in order to move the T-shaped pull rod 10 downward to release the knife. When no oil is added, the disc spring 5 on the cylinder cover 1 naturally relaxes. The disc spring 5 pushes the locking nut 13 upward, thereby driving the pull rod 6 to move upward. The pull rod 6 drives the rod 8, which in turn drives the T-shaped pull rod 10 to pull the knife, realizing mechanical locking and hydraulic release, ensuring that there is no risk of the knife falling off after a hydraulic failure.

[0027] The toothed disc 12 works in conjunction with the matching toothed disc on the tool holder to achieve more precise tool pulling, ensuring the accuracy of the tool holder after tool pulling, thereby further improving machining accuracy.

[0028] During use, piston rod 4 connects to rod 8 by pressing against pull rod 6. When tightening the tool holder, oil injection stops at the oil hole of cylinder cover 1. The conical structure of disc spring 5 undergoes elastic deformation under axial pressure, and the stored potential energy generates a reaction force. Disc spring 5 pushes locking nut 13 to drive pull rod 6, thereby driving piston rod 4 in cylinder 2 to move upward. Disc spring 5 pushes locking nut 13 upward within bushing 14. Locking nut 13 drives pull rod 8 and T-shaped pull rod 10 through threads to tighten tool holder, forming a mechanical locking mechanism. When releasing tool holder, hydraulic pressure is applied to cylinder 2, and hydraulic oil drives piston rod 4 downward. The piston rod 4 pushes against the pull rod 6, which in turn drives the connected rod 8 and T-shaped pull rod 10 to loosen the tool holder, thereby achieving rapid tool change. The T-shaped block tensioning tool holder device achieves mechanical locking through the tension of the disc spring 5, and then releases through hydraulic action to avoid tool loosening and falling due to hydraulic failure during hydraulic locking. The gear plate seat 11 is installed around the T-shaped pull rod 10 at the bottom. The lower end of the gear plate seat 11 engages with the gear plate 12. The gear plate 12 cooperates with the gear plate on the tool holder to achieve self-positioning and effectively ensure positioning accuracy. The high strength of the T-shaped pull rod 10 and the high strength of the gear plate 12 can achieve high torque cutting.

Claims

1. A novel T-block tensioning tool holder device, comprising a slide (7) and a tool holder (9), wherein the slide (7) is installed inside the tool holder (9), characterized in that: The slide (7) is arranged vertically, and a cylinder (2) with a piston rod (4) is provided on the top of the slide (7). A cylinder cover (1) is installed on the top of the cylinder (2), and the cylinder (2) is connected to the hydraulic system. A bushing (14) is installed in the cavity at the upper end of the slide (7), and a disc spring (5) is provided in the bushing (14). A locking nut (13) is installed in the bushing (14) above the disc spring (5). A rod (8) is installed in the inner cavity of the slide block (7). The upper end of the rod (8) is fixedly connected to the lower end of the pull rod (6). The pull rod (6) passes through the disc spring (5), the bushing (14) and the locking nut (13). The upper end of the pull rod (6) is pressed against the center of the piston rod (4) in the oil cylinder (2). Oil is injected into the oil hole on the oil cylinder cover (1) to make the piston rod (4) move downward. The lower end of the piston rod (4) is pressed against the upper end of the pull rod (6). The piston rod (4) pushes the pull rod (6) to move downward. The pull rod (6) drives the rod (8) to move downward. The lower end of the rod (8) is fixedly connected to the T-shaped pull rod (10). The rod (8) drives the T-shaped pull rod (10) to move downward to release the knife. A toothed disc seat (11) is fitted between the lower part of the T-shaped pull rod (10) and the inner wall of the slide (7). The bottom of the toothed disc seat (11) is fixedly connected to the toothed disc (12). The toothed disc (12) is then connected to the knife clip through the toothed disc on the knife clip.

2. The novel T-block tensioning tool holder device according to claim 1, characterized in that: The upper end of the piston rod (4) is exposed outside the cylinder cover (1) to facilitate the installation of the detection switch.

3. The novel T-block tensioning tool holder device according to claim 1, characterized in that: An adjustment plate (3) is fixed at the lower position inside the oil cylinder (2). The oil cylinder (2) is fixedly connected to the top of the slide block (7) through the adjustment plate (3) and the bushing (14).

4. The novel T-block tensioning tool holder device according to claim 1, characterized in that: The upper and lower ends of the disc spring (5) abut against the bottom end of the locking nut (13) and the upper end of the bottom block of the pull rod (6), respectively; the upper end of the disc spring (5) abuts against the locking nut (13), and the internal thread of the locking nut (13) is fixedly connected to the pull rod (6) by the thread; the disc spring (5) drives the pull rod (6) to move upward through the locking nut (13) and pushes the piston rod (4), while the pull rod (6) moves upward to pull the rod (8), and the rod (8) pulls the T-shaped pull rod (10).

5. The novel T-block tensioning tool holder device according to claim 1, characterized in that: The cylinder (2) needs to be continuously filled with oil through the oil hole on the cylinder cover (1) in order to move the T-shaped pull rod (10) downward to release the knife. When the oil hole on the cylinder cover (1) is not filled with oil, the disc spring (5) will naturally relax. The disc spring (5) pushes the locking nut (13) upward, thereby driving the pull rod (6) to move upward. The pull rod (6) drives the rod (8), thereby driving the T-shaped pull rod (10) to pull the knife, realizing mechanical locking and hydraulic relaxation, ensuring that there is no risk of the knife falling off after hydraulic failure.

6. The novel T-block tensioning tool holder device according to claim 1, characterized in that: The toothed disc (12) works with the matching toothed disc on the tool holder to achieve more precise tool pulling, ensuring the accuracy of the tool holder after tool pulling, thereby further improving the machining accuracy.

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