CN219310115U

CN219310115U - Multi-cylinder hydraulic knife handle

Info

Publication number: CN219310115U
Application number: CN202320736809.5U
Authority: CN
Inventors: 刘太恒
Original assignee: Jining Jiehe Machinery Co ltd
Current assignee: Jining Jiehe Machinery Co ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-07-07
Anticipated expiration: 2033-04-06

Abstract

The hydraulic tool handle with multiple cylinders is characterized in that an expansion sleeve is embedded in the inner hole at the front part of the tool handle body in a sealing manner, an oil cavity is formed between the periphery of the expansion sleeve and the inner hole at the front part of the tool handle body, a vent hole communicated with the oil cavity is formed in the peripheral surface of the tool handle body, and a plug is sealed on the vent hole; at least two pressurizing holes are alternately arranged on the periphery of the cutter handle body, each pressurizing hole is composed of a unthreaded hole and a threaded hole, an oil duct is arranged at the front end part of the unthreaded hole and is communicated with the oil cavity, a piston with an appropriate diameter is placed in the unthreaded hole, an O-shaped ring closely contacted with the outer circumferential surface of the piston is placed in a groove of the unthreaded hole part, a pressurizing screw is connected in the threaded hole of the pressurizing hole, the front end of the pressurizing screw is propped against the rear end face of the piston, and hydraulic oil is filled in the oil cavity, the oil duct and the front part of the O-shaped ring of the unthreaded hole. According to the utility model, two or more clamping cylinders are used for providing hydraulic oil for pressurizing and clamping the expansion sleeve, so that the oil quantity required by deformation and clamping of the expansion sleeve can be ensured, the clamping of a cutter is reliable, and the machining precision of a workpiece is ensured.

Description

Multi-cylinder hydraulic knife handle

Technical Field

The utility model relates to a hydraulic clamping tool handle, in particular to a multi-cylinder hydraulic tool handle.

Background

When the bolts are screwed down, hydraulic oil pressure is generated in the tool handle and is uniformly transmitted to the expansion sleeve from the peripheral direction, and the expansion sleeve clamps the tool, so that the radial runout error precision and the repeated positioning precision of the system are higher, the hole size precision of the drilling holes and the reaming holes can be greatly improved, and the breaking of the tool can be effectively prevented; the oil in the oil cavity also has damping performance, so that the vibration of a cutter and a machine tool spindle can be effectively prevented, and the oil is gradually popularized and applied in recent years. However, the existing hydraulic clamping knife handle is only provided with a single oil cylinder, and because the hydraulic oil quantity provided by the single oil cylinder is limited by space, the pressed-in oil is insufficient to enable the deformation surface to be in full contact with the surface of a knife, the torque provided by the hydraulic clamping knife handle is small, and the situation that the knife clamp is not tight easily occurs during heavy cutting.

Disclosure of Invention

The utility model aims to provide a multi-cylinder hydraulic knife handle, which solves the problems that the prior hydraulic clamping knife handle has limited hydraulic oil quantity and is easy to cause non-clamping of a knife during heavy cutting.

The object of the utility model is achieved in the following way: the hydraulic tool handle with multiple cylinders is provided with a tool handle body which is a revolving body, an expansion sleeve is hermetically inlaid in an inner hole at the front part of the tool handle body, an oil cavity is formed in a gap between the periphery of the expansion sleeve and the inner hole at the front part of the tool handle body, the inner hole of the expansion sleeve is a tool clamping hole, a vent hole is formed in the peripheral surface of the tool handle body, the bottom of the vent hole is communicated with the oil cavity, and a plug is hermetically connected to the vent hole through threads; at least two pressurizing holes are alternately arranged on the periphery of the cutter handle body, each pressurizing hole is composed of a front unthreaded hole and a rear threaded hole, an oil duct is arranged at the front end part of each unthreaded hole and is communicated with an oil cavity, a piston with an appropriate diameter is placed in each unthreaded hole, an O-shaped ring is placed in a groove of each unthreaded hole part and is closely contacted with the outer circumferential surface of the piston to be sealed, pressurizing screws are connected in the threaded holes of the pressurizing holes through threads, the front ends of the pressurizing screws are propped against the rear end surface of the piston, and hydraulic oil is filled in the oil cavity, the oil duct and the front parts of the O-shaped rings of the unthreaded holes; by rotating the pressurizing screw inwards, the pressurizing screw pushes the piston inwards, the piston pushes hydraulic oil to be uniformly transferred to the expansion sleeve from the surrounding direction, and the expansion sleeve contracts inwards to clamp the cutter.

The air release holes and all the pressurizing holes are positioned on the same plane perpendicular to the axis of the cutter handle body, so that the dynamic balance of the cutter handle is good.

The pressurizing screw is an inner hexagon screw, and the matched use is an inner hexagon spanner.

The utility model adopts two or more than two clamping cylinders to provide hydraulic oil to press and clamp the expansion sleeve, can provide enough hydraulic oil quantity, ensures the oil quantity required by deformation and clamping of the expansion sleeve, ensures that the expansion sleeve clamps the cutter reliably, can ensure firm clamping of the cutter during heavy cutting, and ensures the machining precision of a workpiece.

Drawings

FIG. 1 is a front view of the present utility model;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an outline view of the present utility model;

fig. 4 is a structural view of the socket head wrench.

In the figure: 1-a knife handle body; 2-a knife clamping hole; 3-bleed holes; 4-expanding sleeve; 5-an oil cavity; 6-oil duct; 7-a light hole; 8-a piston; 9-O-shaped rings; 10-a threaded hole; 11-pressing screws; 12-inner hexagonal wrench.

Detailed Description

Referring to fig. 1-4, there is a shank body 1 which is a revolution body, the front inner hole of the shank body 1 is sealed and inlaid with an expansion sleeve 4, the gap between the outer periphery of the expansion sleeve 4 and the front inner hole of the shank body 1 forms an oil cavity 5, the inner hole of the expansion sleeve 4 is a cutter clamping hole 2, the peripheral surface of the shank body 1 is provided with a bleed hole 3, the bleed hole 3 is used for releasing air when hydraulic oil is poured into the oil cavity 5, the bottom of the bleed hole 3 is communicated with the oil cavity 5, and a plug is sealed on the bleed hole through threaded connection; two pressurizing holes are arranged at the periphery of the cutter handle body 1, each pressurizing hole is composed of a front unthreaded hole 7 and a rear threaded hole 10, an oil duct 6 is arranged at the front end part of the unthreaded hole 7 and is communicated with the oil cavity 5, a piston 8 with an appropriate diameter is placed in the unthreaded hole 7, an O-shaped ring 9,O type ring 9 is placed in a groove of the unthreaded hole 7 and is closely contacted with the outer circumferential surface of the piston 8 to be sealed, a pressurizing screw 11 is connected in the threaded hole 10 of the pressurizing hole through threads, the front end of the pressurizing screw 11 is propped against the rear end face of the piston 8, and hydraulic oil is filled in the oil cavity 5, the oil duct 6 and the front part of the O-shaped ring 9 of the unthreaded hole 7. The air release holes 3 and all the pressurizing holes are positioned on the same plane perpendicular to the axis of the tool shank body 1, the pressurizing screw 11 is an inner hexagonal screw, and the matched use is an inner hexagonal wrench 12.

In the embodiment, the BT series knife handle is shown, and the multi-cylinder hydraulic clamping mode is also suitable for being used on HSK, CAT, JT, VDI series products.

Claims

1. The utility model provides a many hydro-cylinders hydraulic pressure handle of a knife, has a handle of a knife body that is the solid of revolution, its characterized in that: an expansion sleeve (4) is embedded in the inner hole at the front part of the cutter handle body (1) in a sealing manner, an oil cavity (5) is formed between the periphery of the expansion sleeve (4) and the inner hole at the front part of the cutter handle body (1), the inner hole of the expansion sleeve (4) is a cutter clamping hole (2), a vent hole (3) is formed in the peripheral surface of the cutter handle body (1), the bottom of the vent hole (3) is communicated with the oil cavity (5), and a plug is sealed on the vent hole (3) through threaded connection; at least two pressurizing holes are formed in the periphery of the cutter handle body (1), each pressurizing hole is formed by a front unthreaded hole (7) and a rear threaded hole (10), an oil duct (6) is formed in the front end of the unthreaded hole (7) and is communicated with an oil cavity (5), a piston (8) with an appropriate diameter is placed in the unthreaded hole (7), an O-shaped ring (9) is placed in a groove of the unthreaded hole (7), the O-shaped ring (9) is closely contacted with the outer circumferential surface of the piston (8) to seal, a pressurizing screw (11) is connected in the threaded hole (10) of the pressurizing hole through threads, the front end of the pressurizing screw (11) is propped against the rear end face of the piston (8), and the front parts of the oil cavity (5), the oil duct (6) and the O-shaped ring (9) of the unthreaded hole (7) are filled with hydraulic oil.

2. The multi-cylinder hydraulic knife handle according to claim 1, wherein: the air release holes (3) and all the pressurizing holes are positioned on the same plane perpendicular to the axis of the cutter handle body (1).

3. The multi-cylinder hydraulic knife handle according to claim 1, wherein: the pressurizing screw (11) is an inner hexagonal screw, and the matched use is an inner hexagonal wrench (12).