High-pressure fluid driven expansion type cutter

Abstract

The invention provides a high-pressure fluid driven expansion type cutter which comprises a cutter handle, a pressurizing part, a plug type assembly and a cutting part, the pressurizing part is arranged in the cutter handle, the cutter handle is provided with a telescopic area, the telescopic area is communicated with the pressurizing part, the pressurizing part is used for injecting fluid into the telescopic area, the plug type assembly is installed in the telescopic area, and the plug type assembly can slide in the telescopic area; a cutting part is arranged on one side of the plug type assembly, the cutting part is installed on the cutter handle and can move in the radial direction relative to the cutter handle, and the plug type assembly is used for driving the cutting part to move in the radial direction after fluid is injected. According to the high-pressure fluid driven expansion type cutter, the problem that in the prior art, a cutter is only linearly driven and driven to rotate automatically, so that the cutter jumps over the top of the boss to machine the to-be-machined face of the to-be-machined part is solved.

Description

Technical Field

[0001] The invention relates to a tool, in particular to a high-pressure fluid driven expansion type tool. Background Art

[0002] like Figure 1 As shown, the workpiece 5 to be processed includes: a body, an outer wall of the body protrudes to form a boss, the bottom of the boss is a surface to be processed 50, and a tool processing equipment is required to process the surface to be processed 50 to improve the accuracy of the surface to be processed 50.

[0003] In the prior art, tool processing equipment includes: a linear drive device, a mounting seat, a rotary drive device and a tool. The output end of the linear drive device is connected to the mounting seat, the mounting seat is connected to the rotary drive device, and the output end of the rotary drive device is connected to the tool. During processing, the linear drive device drives the mounting seat, the rotary drive device and the tool to move, so that the tool extends to the position to be processed, and then the rotary drive device drives the tool to rotate, thereby realizing operations such as turning and boring.

[0004] Although the above-mentioned tool processing equipment can achieve the processing purpose, there is still a problem: since the linear drive device drives the tool to perform linear driving, the top of the boss has an obstruction on the tool, so it is difficult for the tool to extend to the processing surface 50 of the workpiece 5 to be processed, and it is impossible to process the processing surface 50 of the workpiece 5 to be processed, and the requirements cannot be met. Summary of the invention

[0005] The present invention provides a high-pressure fluid driven expansion tool to solve the problem in the prior art that the tool jumps over the top of the boss to process the surface to be processed of the workpiece because the tool is only driven linearly and driven to rotate.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: the present invention provides a high-pressure fluid-driven expandable tool, comprising: a tool handle, a pressurizing part, a plug-type component and a cutting part, the tool handle is provided with a pressurizing part, the tool handle is provided with a telescopic zone, the telescopic zone is connected to the pressurizing part, the pressurizing part is used to inject fluid into the telescopic zone, the plug-type component is installed in the telescopic zone, and the plug-type component can slide in the telescopic zone; a cutting part is provided on one side of the plug-type component, the cutting part is installed on the tool handle, the cutting part can move radially relative to the tool handle, and the plug-type component is used to drive the cutting part to move radially after the fluid is injected.

[0007] Preferably, the cutting part includes: a pushing block and a cutting assembly, the pushing block is installed in the side wall of the handle, the pushing block can move radially relative to the handle, one end of the pushing block is in contact with the plug assembly, the pushing block can be pushed by the plug assembly to the side away from the axis of the handle, the other end of the pushing block is connected to one end of the cutting assembly, the middle part of the cutting assembly is hinged to the handle, and the other end of the cutting assembly is the cutting execution point.

[0008] Preferably, the plug-type assembly includes: a driving piston and a return spring. The driving piston is located in the telescopic zone. The driving piston can move in the axial direction relative to the tool handle. The outer wall of the driving piston is used to push the pushing block. A return spring is installed at the driving piston, and the return spring is used to lift the driving piston.

[0009] Preferably, a plug is threadedly connected to the bottom of the shank, the plug is located at the bottom of the telescopic zone, an adjuster is installed on the plug, the adjuster moves under the guide of the plug, the top of the adjuster supports the driving piston, the return spring is located between the plug and the driving piston, and a vent hole is opened on the plug to connect the bottom of the driving piston with the outside world.

[0010] Preferably, the regulator is provided with a first supporting surface, and the inner wall of the screw plug is provided with a second supporting surface, and the second supporting surface is used to limit the descent of the regulator by supporting the first supporting surface.

[0011] Preferably, a push spring is installed between the cutting assembly and the knife handle, and the push spring is located below the hinge of the cutting assembly.

[0012] Preferably, a first push surface is formed on the side wall of the driving piston, the angle between the first push surface and the axis of the tool handle is an acute angle, and a second push surface is arranged on the push block, and the first push surface is used to move the push block in radial direction by pushing the second push surface.

[0013] Preferably, the cutting assembly includes: a rotating arm and a cutter head, the middle portion of the rotating arm is hinged to the handle, one end of the rotating arm is used to be in close contact with the push block, and the other end of the rotating arm is equipped with a cutter head, which is the cutting execution part of the cutting assembly.

[0014] Preferably, the pressurizing part includes: a fluid tube connecting channel and a fluid injection channel. The top of the shank is opened to form a fluid tube connecting channel, the fluid tube connecting channel is connected to an external fluid driving device, and the fluid injection channel is used to connect to the telescopic area.

[0015] Preferably, the high-pressure fluid driven expandable tool is installed in a tool processing device, and the tool processing device further includes: a linear drive device, a mounting seat and a rotary drive device, the output end of the linear drive device is connected to the mounting seat, the mounting seat is connected to the rotary drive device, and the output end of the rotary drive device is connected to the high-pressure fluid driven expandable tool. The tool processing device processes the workpiece according to the following steps: S1, the linear drive device drives the mounting seat, the rotary drive device and the high-pressure fluid driven expandable tool to move, so that the bottom end of the cutting part of the high-pressure fluid driven expandable tool is located next to the processing surface of the workpiece to be processed; S2, the external fluid driving device injects fluid into the telescopic area through the driving part to drive the plug-type component to move, and the plug-type component pushes the cutting part to move in the radial direction, so that the bottom end of the cutting part moves radially in the handle, and the bottom end of the cutting part is in close contact with the processing surface of the workpiece to be processed; S3, the rotary drive device drives the high-pressure fluid driven expandable tool to rotate, and the bottom end of the cutting part processes the processing surface of the workpiece to be processed.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present application, by setting a pressurizing part, the external fluid driving device (which can be a water pump or an air pump, etc.) is connected to the telescopic zone in the tool handle, thereby laying the foundation for the external fluid driving device to inject fluid into the telescopic zone, and then the cutting part is set to be able to move in the radial direction of the tool handle, thereby realizing the external fluid driving device to inject fluid, and driving the plug-type component to drive the cutting part to move in the radial direction of the tool handle, avoiding the original linear drive device driving the high-pressure fluid to drive the expandable tool to move linearly, resulting in the inability to jump over the top of the boss of the workpiece to be processed, so that the bottom end of the cutting part can extend into the workpiece to be processed. The surface to be processed is a special shape composed of two tangent arcs, so it is necessary to add a fluid to drive the piston assembly to move and then drive the cutting part to move in the radial direction of the tool handle.

[0017] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the workpiece to be processed.

[0019] Figure 2 This is a schematic diagram of the structure of the deployable tool driven by high-pressure fluid.

[0020] Figure 3 A cross-sectional view of a high-pressure fluid-driven expandable tool.

[0021] Figure numerals: tool handle 1, plug 11, pressurizing part 2, fluid tube connecting channel 21, fluid injection channel 22, plug assembly 3, drive piston 31, return spring 32, regulator 33, cutting part 4, push block 41, cutting assembly 42, rotating arm 421, tool head 422, push spring 43, workpiece to be processed 5, surface to be processed 50. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments: like Figure 2 as well as Figure 3 As shown, the present invention provides a high-pressure fluid-driven deployable tool, comprising: a handle 1, a pressurizing part 2, a plug-type component 3 and a cutting part 4. The handle 1 is provided with the pressurizing part 2, the handle 1 is provided with a telescopic zone, the telescopic zone is connected to the pressurizing part 2, the pressurizing part 2 is used to inject fluid into the telescopic zone, the plug-type component 3 is installed in the telescopic zone, and the plug-type component 3 can slide in the telescopic zone; a cutting part 4 is provided on one side of the plug-type component 3, the cutting part 4 is installed on the handle 1, the cutting part 4 can move radially relative to the handle 1, and the plug-type component 3 is used to drive the cutting part 4 to move radially after the fluid is injected.

[0023] The cutting part 4 includes: a push block 41 and a cutting assembly 42. The push block 41 is installed in the side wall of the handle 1. The push block 41 can move radially relative to the handle 1. One end of the push block 41 contacts the plug assembly 3. The push block 41 can be pushed by the plug assembly 3 to the side away from the axis of the handle 1. The other end of the push block 41 is connected to one end of the cutting assembly 42. The middle part of the cutting assembly 42 is hinged to the handle 1. The other end of the cutting assembly 42 is a cutting execution part. The plug assembly 3 pushes the push block 41 to move radially. The cutting assembly 42 is a rotary type, so that the cutting assembly 42 has partial movement in the radial direction and partial movement on the axis, so that the cutting execution part in the cutting assembly 42 (also the bottom end of the cutting part 4) can fit the processing surface 50 of the workpiece 5 to be processed, so that the cutting execution part in the cutting assembly 42 can fully process the special-shaped processing surface 50.

[0024] The plug assembly 3 includes: a driving piston 31 and a return spring 32. The driving piston 31 is located in the telescopic area. The driving piston 31 can move in the axial direction relative to the tool handle 1. The outer wall of the driving piston 31 is used to push the push block 41. The driving piston 31 is installed with a return spring 32, and the return spring 32 is used to lift the driving piston 31. The driving piston 31 is similar to a piston in a hydraulic cylinder or a cylinder, and the telescopic area is divided into an upper half and a lower half. The return spring 32 allows the driving piston 31 to return to a position where it does not squeeze the push block 41 when no fluid is injected.

[0025] A screw plug 11 is threadedly connected to the bottom of the handle 1. The screw plug 11 is located at the bottom of the telescopic area. A regulator 33 is installed on the screw plug 11. The regulator 33 moves under the guidance of the screw plug 11. The top of the regulator 33 supports the driving piston 31. The return spring 32 is located between the screw plug 11 and the driving piston 31. The screw plug 11 is provided with a vent hole that connects the bottom of the driving piston 31 with the outside world. The screw plug 11 has the function of blocking the telescopic area and also installs the driving piston 31, the regulator 33 and the return spring 32 in place.

[0026] The regulator 33 is provided with a first supporting surface, and the inner wall of the screw plug 11 is provided with a second supporting surface, and the second supporting surface is used to limit the regulator 33 from descending by supporting the first supporting surface. The coordinated setting of the first supporting surface and the second supporting surface realizes limiting the regulator 33 from leaving the telescopic zone. At the same time, since the rotation angle of the cutting assembly 42 directly affects the position of the cutting execution point in the cutting assembly 42, it is very important to limit the height that the regulator 33 and the driving piston 31 can descend. In order to adapt to the position of the surface 50 to be processed in the workpiece 5 to be processed, it is necessary to adjust the relative position of the screw plug 11 and the handle 1, and at the same time, the position of the first supporting surface and the second supporting surface can also be adjusted, so that the cutting execution point in the cutting assembly 42 is in close contact with the surface 50 to be processed in the workpiece 5 to be processed, ensuring that the cutting execution point in the cutting assembly 42 (that is, the cutter head 422) can fully cut the surface 50 to be processed, and ensuring the cutting quality of the surface 50 to be processed.

[0027] A push spring 43 is installed between the cutting assembly 42 and the handle 1, and the push spring 43 is located below the hinge of the cutting assembly 42. The push spring 43 prevents the cutting execution part of the cutting assembly 42 from colliding with the top of the boss of the workpiece 5 to be processed when it is not pushed by the piston assembly, thereby avoiding damaging the cutter head 422.

[0028] A first pushing surface is formed on the side wall of the driving piston 31, and the angle between the first pushing surface and the axis of the tool handle 1 is an acute angle. A second pushing surface is provided on the pushing block 41, and the first pushing surface is used to push the second pushing surface to move the pushing block 41 in the radial direction. The inclined arrangement of the first pushing surface and the second pushing surface enables the driving piston 31 located in the axis direction to push the pushing block 41 to move in the radial direction.

[0029] The cutting assembly 42 includes: a rotating arm 421 and a cutter head 422. The middle of the rotating arm 421 is hinged to the handle 1. One end of the rotating arm 421 is used to be in close contact with the push block 41. The other end of the rotating arm 421 is equipped with a cutter head 422. The cutter head 422 is the cutting execution part of the cutting assembly 42.

[0030] The pressurizing part 2 includes: a fluid tube connecting channel 21 and a fluid injection channel 22. The top of the handle 1 is opened to form a fluid tube connecting channel 21, the fluid tube connecting channel 21 is connected to the external fluid driving device, and the fluid injection channel 22 is used to connect to the telescopic area.

[0031] The high-pressure fluid driven deployable tool is installed in a tool processing equipment, and the tool processing equipment also includes: a linear drive device, a mounting seat and a rotary drive device, the output end of the linear drive device is connected to the mounting seat, the mounting seat is connected to the rotary drive device, and the output end of the rotary drive device is connected to the high-pressure fluid driven deployable tool. The tool processing equipment processes the workpiece 5 according to the following steps: S1, the linear drive device drives the mounting seat, the rotary drive device and the high-pressure fluid-driven expandable tool to move, so that the bottom end of the cutting part 4 of the high-pressure fluid-driven expandable tool is located next to the surface 50 to be processed of the workpiece 5 to be processed. During this process, the piston 31 is driven to a high position under the elastic force of the reset spring 32, and the bottom end of the cutting part 4 is away from the surface 50 to be processed of the workpiece 5 to be processed under the elastic force of the push spring 43; S2, the external fluid drive device injects fluid into the telescopic area through the drive part to drive the plug component 3 to move, and the plug component 3 pushes the cutting part 4 to move radially, so that the bottom end of the cutting part 4 moves radially in the tool handle 1, and the bottom end of the cutting part 4 is in close contact with the surface 50 to be processed of the workpiece 5 to be processed; S3, the rotary drive device drives the high-pressure fluid-driven expandable tool to rotate, and the bottom end of the cutting part 4 processes the surface 50 to be processed of the workpiece 5 to be processed.

[0032] In the present application, firstly, in order to realize that the driving cutting part 4 can move in the radial direction, the pressurizing part 2, the telescopic area and the plug-type component 3 are designed; then, because the handle 1 needs to rotate, the pressurizing part 2 and the external fluid driving device can also rotate, so the fluid tube connecting channel 21 is designed to be symmetrical on the axis line, so that the fluid tube connecting channel 21 can rotate relative to the external fluid driving device, so that the handle 1 can also rotate relative to the external fluid driving device, thereby realizing the movement of the driving piston 31 in the axis line direction, and cannot realize the movement of the driving piston 31 in the radial direction; then, in order to realize that the driving piston 31 drives the cutting component 42 in the cutting part 4 to move in the radial direction, a second pushing surface on the pushing block 41 is provided to contact with the driving piston The first pushing surface of 31 cooperates, so as to realize the driving cutter head 422 to move in the radial direction. At the same time, the entire cutting assembly 42 is arranged to be rotatable, so that the cutter head 422 can be in close contact with the surface to be processed 50 which is arranged slightly downward, thereby laying a first condition for the cutter head 422 to fully process the surface to be processed 50; finally, in order to lay the second condition for the cutter head 422 to fully process the surface to be processed 50 and control the processing depth of the cutter head 422, it is necessary to control the lowering height of the driving piston 31, so the first supporting surface and the second supporting surface on the regulator 33 are adjustable in height, and the screw plug 11 can also be adjusted in height, so as to control the rotation angle of the cutting assembly 42, control the processing depth of the cutter head 422, and ensure product quality.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A high-pressure fluid driven expansion tool, characterized in that: include: The handle, the pressurizing part, the plug assembly and the cutting part, A pressurizing part is arranged in the knife handle, and a telescopic area is opened in the knife handle, and the telescopic area is connected to the pressurizing part. The pressurizing part is used to inject fluid into the telescopic area. A plug-type component is installed in the telescopic area, and the plug-type component can slide in the telescopic area. A cutting part is provided on one side of the plug-type component. The cutting part is installed on the handle. The cutting part can move radially relative to the handle. The plug-type component is used to drive the cutting part to move radially after the fluid is injected.

2. The high-pressure fluid driven deployable tool according to claim 1, characterized in that: The cutting part includes: a pushing block and a cutting assembly. The pushing block is installed in the side wall of the tool handle. The pushing block can move radially relative to the tool handle. One end of the pushing block is in contact with the plug-type assembly. The pushing block can be pushed by the plug-type assembly to the side away from the axis of the tool handle. The other end of the pushing block is connected to one end of the cutting assembly. The middle part of the cutting assembly is hinged to the tool handle. The other end of the cutting assembly is the cutting execution point.

3. The high-pressure fluid driven deployable tool according to claim 2, characterized in that: The plug-type component includes: a driving piston and a return spring. The driving piston is located in the telescopic area. The driving piston can move in the axial direction relative to the tool handle. The outer wall of the driving piston is used to push the pushing block. A return spring is installed on the driving piston, and the return spring is used to lift the driving piston.

4. The high-pressure fluid driven deployable tool according to claim 3, characterized in that: A screw plug is threadedly connected to the bottom of the tool handle. The screw plug is located at the bottom of the telescopic area. An adjuster is installed on the screw plug. The adjuster moves under the guide of the screw plug. The top of the adjuster supports the driving piston. The return spring is located between the screw plug and the driving piston. A vent hole is opened on the screw plug to connect the bottom of the driving piston with the outside world.

5. The high-pressure fluid driven deployable tool according to claim 4, characterized in that: The regulator is provided with a first supporting surface, and the inner wall of the screw plug is provided with a second supporting surface, and the second supporting surface is used for limiting the descent of the regulator by supporting the first supporting surface.

6. The high-pressure fluid driven deployable tool according to claim 5, characterized in that: A push spring is installed between the cutting assembly and the knife handle, and the push spring is located below the hinge of the cutting assembly.

7. The high-pressure fluid driven deployable tool according to claim 6, characterized in that: A first pushing surface is formed on the side wall of the driving piston, and an acute angle is formed between the first pushing surface and the axis of the tool handle. A second pushing surface is arranged on the pushing block, and the first pushing surface is used to move the pushing block in radial direction by pushing the second pushing surface.

8. The high-pressure fluid driven deployable tool according to claim 5, characterized in that: The cutting assembly includes: a rotating arm and a cutter head. The middle part of the rotating arm is hinged with the cutter handle. One end of the rotating arm is used to be in close contact with the push block. The other end of the rotating arm is equipped with a cutter head, which is the cutting execution part of the cutting assembly.

9. The high-pressure fluid driven deployable tool according to claim 8, characterized in that: The pressurizing part includes: a fluid tube connecting channel and a fluid injection channel. The top of the handle is opened to form a fluid tube connecting channel. The fluid tube connecting channel is connected to an external fluid driving device, and the fluid injection channel is used to connect to the telescopic area.

10. The high-pressure fluid driven deployable tool according to any one of claims 1 to 9, characterized in that: The high-pressure fluid driven expansion tool is installed in a tool processing device, and the tool processing device further includes: a linear drive device, a mounting seat, and a rotary drive device, the output end of the linear drive device is connected to the mounting seat, the mounting seat is connected to the rotary drive device, and the output end of the rotary drive device is connected to the high-pressure fluid driven expansion tool. The tool processing device processes the workpiece according to the following steps: S1, the linear drive device drives the mounting seat, the rotary drive device and the high-pressure fluid driven expandable tool to move, so that the bottom end of the cutting part of the high-pressure fluid driven expandable tool is located beside the to-be-processed surface of the to-be-processed workpiece; S2, the external fluid driving device injects fluid into the telescopic area through the driving part to drive the plug-type component to move, and the plug-type component pushes the cutting part to move in the radial direction, so that the bottom end of the cutting part moves in the radial direction of the tool handle, and the bottom end of the cutting part is in close contact with the surface to be processed of the workpiece to be processed; S3, the rotation drive device drives the high-pressure fluid to drive the expansion type tool to rotate, and the bottom end of the cutting part processes the surface to be processed of the workpiece to be processed.

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