Bore machining apparatus and method

Abstract

The application provides a hole processing equipment and a method thereof. The hole processing equipment comprises an electrode body, a first guide body, a second guide body, a traction mechanism, an actuating mechanism and a power supply. The electrode body has a first end and a second end. The first guide body is adjacent to the first end. The second guide body is adjacent to the second end. The traction mechanism is connected with the first guide body, the second guide body and the electrode body. The actuating mechanism is connected with the traction mechanism. The power supply is connected with the traction mechanism. The guide mechanism connected with the electrode body can move through the hole wall of the curved hole inside the workpiece, so that the electrode body moves in the center of the curved hole. The discharge machining effect of the electrode body on the hole wall of the curved hole is optimized. The precision machining work such as grinding finishing is carried out on the curved hole inside the workpiece. The roughness and the size precision of the hole wall of the curved hole inside the workpiece reach the specification requirements. The technical problems that the hole wall of the curved hole inside the workpiece cannot be effectively machined are solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of hole processing, and particularly relates to a hole processing device and a method thereof. BACKGROUND

[0002] The hole in the processing piece such as a mold or a special part is usually designed to extend linearly, mainly because the existing processing technology is faced with a bottleneck and cannot easily perform grinding and finishing operations on the hole wall of the curved hole extending non-linearly in the processing piece, so that the roughness and the size accuracy of the hole wall of the curved hole in the processing piece cannot meet the specification requirements. SUMMARY

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a hole processing device and a method thereof for solving the problem that the hole wall of the curved hole in the processing piece cannot be effectively processed in the prior art.

[0004] To achieve the above-mentioned purpose and other related purposes, the present application provides a hole processing device for performing electrical discharge machining on a curved hole in a processing piece, which comprises: an electrode body for performing an electrical discharge machining operation and having a first end and a second end; a first guide body adjacent to the first end of the electrode body; a second guide body adjacent to the second end of the electrode body; a traction mechanism connected in series with the first guide body, the second guide body and the electrode body; an actuating mechanism connected in series with the traction mechanism; and a power source connected in series with the traction mechanism; when the electrode body performs the electrical discharge machining operation, the actuating mechanism provides kinetic energy to the traction mechanism to make the traction mechanism perform a traction operation to move the first guide body, the second guide body and the electrode body in the curved hole; when the traction mechanism performs the traction operation, the first guide body or the second guide body is supported by the hole wall of the curved hole to move the electrode body along the center of the curved hole; at this time, the power source provides electric energy to the electrode body through the traction mechanism to make the electrode body located at the center of the curved hole to perform electrical discharge machining on the hole wall of the curved hole of the processing piece.

[0005] For the aforementioned hole processing device, the traction mechanism can selectively have a first traction line and a second traction line, the first traction line is connected to the first end of the electrode body, and the second traction line is connected to the second end of the electrode body; when the electrode body performs the electrical discharge machining operation, the first traction line or the second traction line can respectively provide a traction force to the electrode body at the first end or the second end to move the electrode body to make the electrode body move back and forth in the curved hole.

[0006] For the foregoing tunnel processing device, optionally, the first traction line or the second traction line is an electric wire, and the power supply provides electric energy to the electrode body through the first traction line or the second traction line.

[0007] For the foregoing tunnel processing device, optionally, the traction mechanism further has a traction force maintaining structure for maintaining the size of the traction force of the first traction line and the second traction line.

[0008] For the foregoing tunnel processing device, optionally, the traction force maintaining structure includes a pulley block and a reverse prevention mechanism, the pulley block includes a movable pulley and a stationary pulley, and the reverse prevention mechanism includes a ratchet wheel. The reverse prevention mechanism and the movable pulley are connected to the actuating mechanism, so that the reverse prevention mechanism and the movable pulley are connected to the actuating mechanism. When the kinetic energy of the actuating mechanism moves the first traction line by a traction distance, the movable pulley can be connected to the actuating mechanism, the stationary pulley can change the extension direction of the second traction line, the second traction line moves the traction distance, and the ratchet wheel stops the reverse recovery of the second traction line. The total length of the first traction line and the second traction line is fixed to maintain the tension state of the first traction line and the second traction line, so that the size of the traction force of the first traction line and the second traction line is fixed.

[0009] For the foregoing tunnel processing device, optionally, the first guide body, the second guide body, or the electrode body is a spherical block or a conical block.

[0010] For the foregoing tunnel processing device, optionally, the tunnel processing device further includes a processing liquid providing module for providing an electric discharge processing liquid. The first guide body has a first flow channel for providing the electric discharge processing liquid to flow through the first guide body. The second guide body has a second flow channel for providing the electric discharge processing liquid to flow through the second guide body.

[0011] For the foregoing tunnel processing device, optionally, the surface of the electrode body has at least one groove structure for providing the electric discharge processing liquid to flow through the groove structure, and the groove structure has a pushing surface. The electric discharge processing liquid can push the electrode body to rotate in the curved tunnel through the pushing surface, so as to uniformly perform electric discharge processing on the hole wall of the curved tunnel of the workpiece.

[0012] For the foregoing tunnel processing device, optionally, the electrode body has an eccentric connection site deviating from the center. The traction mechanism is connected to the eccentric connection site, so that the traction mechanism eccentrically pulls the electrode body to move, thereby increasing the movement range of the electrode body in the curved tunnel when the electrode body is pulled, and expanding the range of electric discharge processing on the hole wall of the curved tunnel of the workpiece by the electrode body.

[0013] In addition, the present application also provides a hole processing method for performing an electrical discharge machining on a curved hole in a workpiece, which comprises the following steps: providing an electrode body for performing an electrical discharge machining; and providing a guiding mechanism adjacent to the electrode body; when the electrode body performs the electrical discharge machining, the guiding mechanism is supported by the hole wall of the curved hole to drive the electrode body to move along the center of the curved hole, so that the electrode body can be located at the center of the curved hole to perform the electrical discharge machining on the hole wall of the curved hole of the workpiece.

[0014] Compared with the prior art, the hole processing device and method of the present application can support the movement of the guiding mechanism connected with the electrode body by the hole wall of the curved hole in the workpiece, force the electrode body to move at the center of the curved hole, optimize the electrical discharge machining effect of the electrode body on the hole wall of the curved hole, and perform precision machining such as grinding and finishing on the curved hole in the workpiece, so that the roughness and size accuracy of the hole wall of the curved hole in the workpiece can meet the specification requirements, and the technical problems such as the ineffective machining of the hole wall of the curved hole in the workpiece are solved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figures 1 to 2 A schematic diagram showing the use state of the electrode body of the hole processing device of the present application in an embodiment.

[0016] Figure 3 A schematic diagram showing the working principle of the hole processing device of the present application in an embodiment.

[0017] Figure 4 A schematic diagram showing the reverse prevention mechanism of the hole processing device of the present application in an embodiment.

[0018] Figure 5 A schematic diagram showing the electrode body of the hole processing device of the present application in an embodiment.

[0019] Figure 6 A schematic diagram showing the electrode body of the hole processing device of the present application in an embodiment. Figure 5 A schematic diagram showing the use state of the electrode body of the present application in an embodiment.

[0020] Figure 7 A schematic diagram showing the electrode body of the hole processing device of the present application in another embodiment.

[0021] Figure 8 A schematic diagram showing the electrode body of the hole processing device of the present application in an embodiment. Figure 7 A schematic diagram showing the use state of the electrode body of the present application in an embodiment.

[0022] Figure 9 A schematic diagram showing the use state of the electrode body of the present application in another embodiment. Figure 7 A schematic diagram showing the use state of the electrode body of the present application in another embodiment.

[0023] Figure 10 A schematic diagram showing the guide body of the present application as a conical block in one embodiment.

[0024] Figure 11 A schematic diagram showing the electrode body in use in another embodiment. Figure 7 A schematic diagram showing the electrode body in use in another embodiment.

[0025] Symbol explanation

[0026] 1 Channel processing device

[0027] 11 Electrode body

[0028] 111 First end

[0029] 112 Second end

[0030] 113 Groove structure

[0031] 1131 Pushing surface

[0032] 114 Eccentric connection site

[0033] 12 Guiding mechanism

[0034] 121 First guide body

[0035] 1211 First flow channel

[0036] 122 Second guide body

[0037] 1221 Second flow channel

[0038] 13 Pulling mechanism

[0039] 131 First pulling line

[0040] 132 Second pulling line

[0041] 133 Traction force maintaining structure

[0042] 1331 Pulley set

[0043] 13311 Movable pulley

[0044] 13312 Stationary pulley

[0045] 1332 Backstop mechanism

[0046] 13321 Ratchet wheel

[0047] 14 Power supply

[0048] 15 Processing liquid providing module

[0049] 16 Actuating mechanism

[0050] 2 workpiece

[0051] 21 curved hole

[0052] 211 hole wall

[0053] 212 center portion

[0054] P1, P2, P3, P4 position

[0055] D1 movement distance DETAILED DESCRIPTION

[0056] The technical content of the present application is described below through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the present specification. The present application can also be implemented or applied through other different embodiments. Each detail in the present specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of the present application.

[0057] The present application provides a hole processing device and a method thereof. The hole wall of a curved hole inside a workpiece can be processed by electrical discharge machining, and the hole wall of the curved hole inside the workpiece can be processed by grinding and finishing, so that the roughness and size accuracy of the hole wall of the curved hole inside the workpiece meet the specification requirements.

[0058] For the technical idea of the present application, please refer to the disclosure of Figures 1 to 11 .

[0059] The hole processing device 1 of the present application includes an electrode body 11, a guide mechanism 12, a traction mechanism 13, a power source 14, and an actuating mechanism 16. The electrode body 11 is used to perform electrical discharge machining and has opposite first and second ends 111 and 112. The shape of the electrode body 11 can be designed according to the shape of the curved hole 21 inside the workpiece 2. For example, as shown in Figure 3 , the electrode body 11 is a spherical block, as shown in Figure 5 and Figure 7 , the electrode body 11 is a conical block. As shown in Figure 1 , the power source 14 and the actuating mechanism 16 are connected in series with the traction mechanism 13, and the power source 14 and the actuating mechanism 16 can be arranged on the electrical discharge machining platform 2 to obtain electrical energy and kinetic energy through the electrical discharge machining platform 2.

[0060] As shown in Figure 3As shown, the guiding mechanism 12 includes a first guiding body 121 and a second guiding body 122. The first guiding body 121 and the second guiding body 122 are made of insulating material, and are adjacent to the first end 111 and the second end 112 of the electrode body 11, respectively. The shapes of the first guiding body 121 and the second guiding body 122 can be modified according to the shape of the channel 21 inside the workpiece 2, for example, as shown in Figure 6 As shown, the first guiding body 121 and the second guiding body 122 are spherical blocks. Figure 8 As shown, the first guiding body 121 and the second guiding body 122 are conical blocks. Figure 10 As shown, the first guiding body 121 and the second guiding body 122 are conical blocks.

[0061] The pulling mechanism 13 is connected to the first guiding body 121, the second guiding body 122 and the electrode body 11, so that the first guiding body 121, the second guiding body 122 and the electrode body 11 can move synchronously. The actuating mechanism 16 is connected to the pulling mechanism 13, so that the pulling mechanism 13 can be provided with kinetic energy. Specifically, when the electrode body 11 performs the discharge machining operation, the actuating mechanism 16 can provide the pulling mechanism 13 with kinetic energy, so that the pulling mechanism 13 performs the pulling operation to pull the first guiding body 121, the second guiding body 122 and the electrode body 11, and the first guiding body 121, the second guiding body 122 and the electrode body 11 move in the curved channel 21. The pulling mechanism 13 has a first pulling line 131 connected to the first end 111 of the electrode body 11 and a second pulling line 132 connected to the second end 112 of the electrode body 11. When the electrode body 11 performs the discharge machining operation, the first pulling line 131 can provide the first end 111 of the electrode body 11 with pulling force, or the second pulling line 132 can provide the second end 112 of the electrode body 11 with pulling force. In this way, the electrode body 11 can be pulled by the first pulling line 131 or the second pulling line 132 to move back and forth in the curved channel 21. At this time, the power supply 14 can provide the electrode body 11 with electric energy through the pulling mechanism 13, so that the electrode body 11 can perform the discharge machining operation on the hole wall 211 of the curved channel 21 inside the workpiece 2, and perform the grinding finishing operation on the hole wall 211 of the curved channel 21 inside the workpiece 2.

[0062] It should be noted that, as shown in Figure 1As shown, the power source 14 can selectively supply electrical energy to the electrode body 11 via the first traction line 131 or the second traction line 132; therefore, the first traction line 131 or the second traction line 132 can be electrical wires. The actuation mechanism 16 of the hole processing equipment 1 can provide kinetic energy to the traction mechanism 13, thereby enabling the first traction line 131 and the second traction line 132 of the traction mechanism 13 to perform the aforementioned traction operation. Additionally, the traction mechanism 13 can optionally be equipped with a traction force maintaining structure 133, which is used to tighten the first traction line 131 and the second traction line 132, thereby maintaining the traction force of the first traction line 131 and the second traction line 132 as expected.

[0063] like Figure 1 As shown, the traction maintaining structure 133 may include a pulley block 1331 and a backstop mechanism 1332. The pulley block 1331 includes a movable pulley 13311 and a stationary pulley 13312. The backstop mechanism 1332 and the movable pulley 13311 are connected to the actuation mechanism 16, so that the backstop mechanism 1332 and the movable pulley 13311 can move in conjunction with the actuation mechanism 16.

[0064] like Figures 1 to 2 As shown, the function of pulley block 1331 is explained as follows: When the actuating mechanism 16 moves from position P1 to position P2, the kinetic energy of the actuating mechanism 16 can cause the first traction line 131 of the traction mechanism 13 to move downward (upward) by a distance D1. At this time, the movable pulley 13311 can move from position P3 to position P4 in conjunction with the actuating mechanism 16. In addition, the stationary pulley 13312 can change the extension direction of the second traction line 132 of the traction mechanism 13, causing the second traction line 132 to move upward (downward) by a distance D1. In this way, the tension of the first traction line 131 and the second traction line 132 can be maintained, so that the magnitude of the traction force of the first traction line 131 and the second traction line 132 is fixed.

[0065] The function of the anti-reverse mechanism 1332 is explained as follows: (e.g.) Figures 1 to 2 as well as Figure 4 As shown, the anti-reverse mechanism 1332 includes a ratchet 13321. When the kinetic energy of the actuating mechanism 16 causes the first traction line 131 of the traction mechanism 13 to move downward (upward) by a traction distance D1, the anti-reverse mechanism 1332 can move in conjunction with the actuating mechanism 16. The ratchet 13321 stops the second traction line 132 from retracting in the reverse direction, so that the total length of the first traction line 131 and the second traction line 132 in the traction mechanism 13 is fixed. In this way, the tension of the first traction line 131 and the second traction line 132 is maintained, and the magnitude of the traction force of the first traction line 131 and the second traction line 132 is fixed.

[0066] In the present application, when the traction mechanism 13 performs the traction operation, the first guide body 121 or the second guide body 122 is supported by the hole wall of the curved hole 21, and the electrode body 11 is driven to move along the center part of the curved hole 21, even if the curved hole 21 is a curved hole that is not straight, as shown in Figure 5 The first guide body 121 or the second guide body 122 can also be supported by the hole wall 211 of the curved hole 21, so that the electrode body 11 can be located at the center part 212 of the curved hole 21 to perform electrical discharge machining on the hole wall 211 of the curved hole 21 of the workpiece 2. It should be noted that since the electrode body 11 moves along the center part of the curved hole 21, the electrical discharge machining effect of the electrode body 11 on the hole wall 211 of the curved hole 21 can be optimized, and the hole wall 211 of the curved hole 21 inside the workpiece 2 can be subjected to precision machining such as grinding and finishing, so that the roughness and size accuracy of the hole wall 211 of the curved hole 21 inside the workpiece 2 meet the specification requirements.

[0067] In the present application, the hole processing equipment 1 further comprises a processing liquid providing module 15 for providing electrical discharge processing liquid F. As shown in Figure 8 The first guide body 121 has a first flow channel 1211 to provide the electrical discharge processing liquid F to flow through the first guide body 121, and similarly, the second guide body 122 has a second flow channel 1221 to provide the electrical discharge processing liquid F to flow through the second guide body 122. Preferably, as shown in Figure 7 The surface of the electrode body 11 has a groove structure 113 to provide the electrical discharge processing liquid F to flow through, and the groove structure 113 can be designed to have a pushing surface 1131, so that when the electrical discharge processing liquid F flows in the groove structure 113 as shown in Figure 8 The electrode body 11 is pushed to rotate in the curved hole 21 to uniformly perform electrical discharge machining on the hole wall 211 of the curved hole 21 of the workpiece 2, thereby optimizing the electrical discharge machining effect of the electrode body 11 on the hole wall 211 of the curved hole 21, and thereby improving the processing shape accuracy. In addition, in other embodiments of the present application, when the electrode body 11 rotates in the curved hole 21 and performs electrical discharge machining, the hole diameter of the curved hole 21 of the workpiece 2 can be expanded.

[0068] In the present application, in Figure 11 The electrode body 11 has an eccentric connection part 114 that is offset from the center, and the traction mechanism 13 connects the eccentric connection part 114 to eccentrically drive the electrode body 11 to move, so as to increase the movement range of the electrode body 11 in the curved hole 21 when it is driven, to expand the range MZ of the electrode body 11 to perform electrical discharge machining on the hole wall 211 of the curved hole 21 of the workpiece 2, thereby optimizing the electrical discharge machining effect of the electrode body 11 on the hole wall 211 of the curved hole 21.

[0069] Furthermore, it should be noted that, as shown in Figure 3 The hole processing method of the present application comprises the following steps: providing an electrode body 11, which is used to perform the electrical discharge machining operation and has a first end 111 and a second end 112; providing a guide mechanism 12, such as comprising a first guide body 121 adjacent to the first end 111 of the electrode body 11 and a second guide body 122 adjacent to the second end 112 of the electrode body 11. When the electrode body 11 performs the electrical discharge machining operation, the first guide body 121 or the second guide body 122 of the guide mechanism 12 is supported by the hole wall 211 of the curved hole 21, and the electrode body 11 is moved along the central part 212 of the curved hole 21, so that the electrode body 11 can be located at the central part 212 of the curved hole 21 to perform the electrical discharge machining on the hole wall 211 of the curved hole 21 of the workpiece 2.

[0070] In summary, the hole processing apparatus and method of the present application can move the electrode body along the central part of the curved hole in the workpiece by supporting the guide mechanism with the hole wall of the curved hole in the workpiece, so as to optimize the electrical discharge machining effect of the electrode body on the hole wall of the curved hole, and to perform the precision machining operation, such as the grinding and finishing, on the curved hole in the workpiece. Thus, the roughness and the size accuracy of the hole wall of the curved hole in the workpiece can meet the specification requirements, and the technical problem that the hole wall of the curved hole in the workpiece cannot be effectively machined can be solved.

Claims

1. A hole machining apparatus for performing electrical discharge machining on a curved hole inside a workpiece, characterized in that, The hole processing device comprises: an electrode body for performing a discharge machining operation and having a first end and a second end; a first guide body adjacent to the first end of the electrode body; a second guide body adjacent to the second end of the electrode body; a traction mechanism connected in series with the first guide body, the second guide body and the electrode body; an actuating mechanism connected in series with the traction mechanism; a power source connected in series with the traction mechanism; and a processing liquid providing module for providing a discharge processing liquid. The traction mechanism has a first traction line, a second traction line, a pulley block and a reverse prevention mechanism, the pulley block comprises a moving pulley and a static pulley, the reverse prevention mechanism comprises a ratchet wheel, the first traction line is connected to the first end of the electrode body, the second traction line is connected to the second end of the electrode body, the reverse prevention mechanism and the moving pulley are connected to the actuating mechanism, so that the reverse prevention mechanism and the moving pulley are connected to the actuating mechanism, when the kinetic energy of the actuating mechanism moves the first traction line by a traction distance, the moving pulley is connected to the actuating mechanism, the static pulley changes the extension direction of the second traction line, so that the second traction line moves the traction distance, and the ratchet wheel prevents the reverse recovery of the second traction line, so that the total length of the first traction line and the second traction line is fixed, to maintain the tension state of the first traction line and the second traction line, and the traction force of the first traction line and the second traction line is fixed. The surface of the electrode body has a pushing surface, the discharge processing liquid can push the electrode body to rotate in the curved hole, to uniformly perform discharge machining on the hole wall of the curved hole of the workpiece; the electrode body has an eccentric connection part deviating from the center, the traction mechanism is connected to the eccentric connection part, so that the traction mechanism eccentrically pulls the electrode body to move, to increase the moving range of the electrode body in the curved hole when the electrode body is pulled, to expand the range of the electrode body performing discharge machining on the hole wall of the curved hole of the workpiece. When the electrode body performs the discharge machining operation, the actuating mechanism provides kinetic energy to the traction mechanism, so that the traction mechanism performs a traction operation to pull the first guide body, the second guide body and the electrode body to move in the curved hole, when the traction mechanism performs the traction operation, the first guide body or the second guide body is supported by the hole wall of the curved hole, to drive the electrode body to move along the center part of the curved hole, at this time, the power source provides electric energy to the electrode body through the traction mechanism, so that the electrode body is located at the center part of the curved hole, to perform discharge machining on the hole wall of the curved hole of the workpiece.

2. The bore machining apparatus according to claim 1, characterized by, When the electrode body performs the electrical discharge machining operation, the first pulling wire or the second pulling wire can provide a pulling force to the electrode body at the first end or the second end, respectively, to pull the electrode body to move so that the electrode body can move back and forth in the curved hole.

3. The bore machining apparatus according to claim 2, characterized by, The first pulling wire or the second pulling wire is an electric wire, and the power source provides electric power to the electrode body through the first pulling wire or the second pulling wire.

4. The bore machining apparatus of claim 1, wherein The first guide body, the second guide body, or the electrode body is a spherical block or a conical block.

5. The bore machining apparatus of claim 1, wherein, The first guide body has a first flow channel that provides the electrical discharge machining liquid to flow through the first guide body, and the second guide body has a second flow channel that provides the electrical discharge machining liquid to flow through the second guide body.

6. The bore machining apparatus according to claim 5, wherein The surface of the electrode body has at least one groove structure that provides the electrical discharge machining liquid to flow through, and the groove structure has the pushing surface.

7. A method of hole processing for electric discharge machining of a curved hole in the interior of a workpiece, characterized by, The hole machining method includes the following steps: providing an electrode body for performing an electrical discharge machining operation by the hole machining apparatus according to any one of claims 1 to 6; and providing a guide mechanism adjacent to the electrode body; when the electrode body performs the electrical discharge machining operation, supporting the guide mechanism by the hole wall of the curved hole to drive the electrode body to move along the central part of the curved hole so that the electrode body is located at the central part of the curved hole to perform electrical discharge machining on the hole wall of the curved hole of the workpiece.

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