A guide tool library for small hole EDM machines

Abstract

A guide tool library for a small hole electric discharge machine, comprising a base, a fixed plate, a movable plate and a guide tool rack; the fixed plate is fixedly connected to the base, the movable plate is movably connected to the fixed plate, such that the movable plate can move back and forth horizontally relative to the fixed plate under the action of an external force; it further comprises a driving mechanism, which drives the movable plate to move back and forth; a plurality of guide tool placement positions are provided on the guide tool rack, the guide tool rack is arranged on the movable plate and is movably connected to the movable plate, such that the guide tool rack can move back and forth horizontally relative to the movable plate under the action of an external force; a magnet is provided at the front end of the movable plate, and a metal baffle attracted to the magnet is provided on the guide tool rack. When the guide tool rack moves to the front end of the movable plate, it is positioned at the front end of the movable plate under the magnetic attraction between the magnet and the metal baffle. This guide tool library can cooperate with the automatic replacement of guide tools during the working process of the equipment, and has a compact structure.

Description

Technical Field

[0001] The present invention relates to the technical field of electric discharge small hole drilling machines, and particularly to a guide holder library for an electric discharge small hole drilling machine. Background Art

[0002] Electric discharge small hole drilling machines are mainly used for deep small hole machining on workpieces made of various conductive materials such as stainless steel, hardened steel, cemented carbide, copper, and aluminum. Its working principle is to use a metal wire as an electrode wire to perform pulsed spark discharge on the workpiece, and the workpiece is corroded by high temperature generated by the discharge between the electrode wire and the workpiece to achieve the purpose of perforation.

[0003] When an electric discharge small hole drilling machine is machining a small hole, the electrode wire needs to pass through a guide holder, and the guide holder is used to guide the path of the electrode wire to ensure the machining accuracy of the small hole; when machining small holes with different diameters, electrode wires with different diameters need to be selected, and different diameter electrode wires need to be matched with guide holders of different diameters. When the electrode wire needs to be replaced during machining, the guide holder also needs to be replaced accordingly; therefore, each electric discharge small hole drilling machine is equipped with multiple guide holders of different specifications and models.

[0004] Usually, only one specification of guide holder is installed on the machine tool, and the remaining guide holders are stored in a tool cabinet near the machine tool. When replacement is needed, the current guide holder is manually removed and a new one is installed; however, the efficiency of manually replacing the guide holder is low, which will interrupt the working process of the machine tool and affect the working efficiency of the equipment.

[0005] In view of the above problems, it is necessary to provide a guide holder library for an electric discharge small hole drilling machine that can cooperate with automatic replacement of the guide holder during the working process of the equipment. Summary of the Invention

[0006] The purpose of the present invention is to provide a guide holder library for an electric discharge small hole drilling machine.

[0007] The technical solution adopted by the present invention is: a guide holder library for an electric discharge small hole drilling machine, including a base, a fixing plate, a movable plate, and a guide holder rack;

[0008] The base is installed on an electric discharge small hole drilling machine, the fixing plate is fixedly connected to the base, and the movable plate is movably connected to the fixing plate, so that the movable plate can move back and forth horizontally relative to the fixing plate under the action of an external force;

[0009] It further includes a driving mechanism, and the driving mechanism drives the movable plate to move back and forth;

[0010] The guide holder rack is provided with a plurality of guide holder placement positions, the guide holder rack is installed on the movable plate and is movably connected to the movable plate, so that the guide holder rack can move back and forth horizontally relative to the movable plate under the action of an external force;

[0011] A magnet is provided at the front end of the movable plate, and a metal baffle attracted to the magnet is provided on the guide holder. When the guide holder moves to the front end of the movable plate, it is positioned at the front end of the movable plate under the magnetic attraction between the magnet and the metal baffle.

[0012] The explanations of the relevant content in the above technical solution are as follows:

[0013] 1. In the above solution, a first linear guide extending forward and backward is provided on the fixed plate, and a first guide slider matching the first linear guide is provided on the movable plate, so that the movable plate can move back and forth from the front end to the rear end of the fixed plate under the action of an external force.

[0014] 2. In the above solution, a first proximity switch corresponding to the movable plate is provided at the front end of the fixed plate, and a second proximity switch corresponding to the movable plate is provided at the rear end of the fixed plate.

[0015] 3. In the above solution, the driving mechanism is a telescopic cylinder. The telescopic cylinder includes a cylinder body and a piston rod. The cylinder body is fixedly connected to the fixed plate, and the piston rod is fixedly connected to the movable plate.

[0016] 4. In the above solution, a second linear guide extending forward and backward is provided on the movable plate, and a second guide slider matching the second linear guide is provided on the guide holder, so that the guide holder can move back and forth from the front end to the rear end of the movable plate under the action of an external force.

[0017] 5. In the above solution, a third proximity switch corresponding to the guide holder is provided at the front end of the movable plate, and a fourth proximity switch corresponding to the guide holder is provided at the rear end of the movable plate.

[0018] 6. In the above solution, the guide placement positions are horizontally arranged in the left - right direction on the guide holder, and positioning pins are provided on each of the guide placement positions.

[0019] 7. In the above solution, a handle is provided at the rear end of the guide holder.

[0020] 8. In the above solution, a front buffer and a rear buffer are provided on the side of the fixed plate facing the movable plate. The front buffer is provided at the front end of the fixed plate, and the rear buffer is provided at the rear end of the fixed plate; a positioning block is fixed on the movable plate, and the positioning block is located between the front buffer and the rear buffer. In the state where the movable plate moves to the front end of the fixed plate, the positioning block abuts against the front buffer, and in the state where the movable plate moves to the rear end of the fixed plate, the positioning block abuts against the rear buffer.

[0021] 9. In the above solution, both the front buffer and the rear buffer are hydraulic buffers, including a buffer cylinder and a buffer rod disposed pointing to the positioning block; a positioning nut is sleeved on the buffer cylinder. When the positioning block abuts against the hydraulic buffer, the buffer rod is completely pushed into the buffer cylinder, constituting the positioning block abutting against the positioning nut.

[0022] The beneficial effects of the present invention are as follows: When the guide holder library for the electric discharge machining small hole drilling machine is in use, it is installed on the corresponding electric discharge machining small hole drilling machine and can cooperate with the electric discharge machining small hole drilling machine to automatically replace the guide holder.

[0023] In the standby state, the guide holder is positioned at the front end of the movable plate, and the movable plate is positioned at the rear end of the fixed plate. The guide holder is in a standby position. When it is necessary to replace the guide holder, the relative position relationship between the guide holder and the movable plate remains unchanged. The driving mechanism drives the movable plate to move forward until the movable plate is positioned at the front end of the fixed plate, so that the guide holder is in a replacement position. At this time, the guide holder library is in a replacement state. The clamping component on the electric discharge machining small hole drilling machine can put the old guide holder back on the guide holder and clamp a new guide holder from the guide holder for replacement, thereby realizing the automatic replacement of the guide holder. During this process, there is no need to interrupt the working process of the equipment, which can improve the working efficiency of the electric discharge machining small hole drilling machine.

[0024] When it is necessary to manually intervene to replace the guide holder in the guide holder library, first, the driving mechanism drives the movable plate to move and be positioned at the rear end of the fixed plate. Then, the operator pulls the guide holder backward to make it move backward away from the front end of the movable plate against the magnetic attraction until the guide holder is positioned at the rear end of the movable plate, thereby making the guide holder in a manual operation position. At this time, the guide holder is closest to the operator, facilitating manual operation. At this time, the guide holder library is in a manual operation state.

[0025] Through the double-layer parallel movement design of the guide holder and the movable plate, and the movable plate and the fixed plate, the guide holder of this guide holder library has two strokes. Only one stroke is enabled during the automatic operation of the equipment, and the other stroke is enabled when manual intervention is required. Thereby, while increasing the moving stroke of the guide holder, the size of the equipment is compressed, making the equipment structure compact, reducing the occupied space, and improving the space utilization efficiency. Description of the Drawings

[0026] Att Figure 1 is a schematic diagram of an embodiment of the present invention in the standby state;

[0027] Att Figure 2 is a front view of an embodiment of the present invention;

[0028] Att Figure 3 is the sectional view taken along the line A-A of Att Figure 2 ;

[0029] Appendix Figure 4 is a schematic diagram of the embodiment of the present invention in the replacement state;

[0030] Appendix Figure 5 is a schematic diagram of the embodiment of the present invention in the manual operation state;

[0031] Appendix Figure 6 is a schematic diagram of the front buffer of the embodiment of the present invention when not being abutted;

[0032] Appendix Figure 7 is a schematic diagram of the front buffer of the embodiment of the present invention when being abutted.

[0033] In the above drawings: 1. Base; 2. Fixed plate; 21. First linear guide; 3. Movable plate; 31. First guide rail slider; 32. Second linear guide; 33. Magnet; 4. Guide holder; 41. Guide placement position; 42. Positioning pin; 43. Handle; 44. Second guide rail slider; 45. Metal baffle; 51. Cylinder block; 52. Piston rod; 61. Front buffer; 62. Rear buffer; 63. Positioning block; 64. Buffer cylinder; 65. Buffer rod; 66. Positioning nut; 7. Guide. Detailed implementation manners

[0034] The present invention will be further described below in conjunction with the drawings and embodiments:

[0035] The following will clearly illustrate the present case with diagrams and detailed descriptions. After understanding the embodiments of the present case, any person skilled in the art can make changes and modifications to the techniques taught by the present case without departing from the spirit and scope of the present case.

[0036] The terms used in this article are only for describing specific embodiments and are not intended to limit the present case. Singular forms such as "a", "this", "this", "the present", and "the" also include plural forms as used in this article.

[0037] Regarding the "first", "second", etc. used in this article, they do not particularly refer to the meaning of order or sequence, nor are they used to limit the present case. They are only used to distinguish components or operations described with the same technical terms.

[0038] Regarding the "connection" or "positioning" used in this article, it can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, and can also refer to two or more components or devices operating or acting on each other.

[0039] Regarding the "including", "comprising", "having", etc. used in this article, they are all open-ended terms, that is, they mean including but not limited to.

[0040] Regarding the terms used in this document, unless otherwise specifically noted, they generally have their ordinary meanings as used in this field, in the context of this case, and in the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art regarding the description of this case.

[0041] Regarding the terms "front", "rear", "upper", "lower", "left", "right", etc. used in this document, they are all directional terms. In this case, they are only used to illustrate the positional relationship between various structures and are not used to limit the protection scope of this case and the specific direction during actual implementation.

[0042] As Figures 1 to 7 shown, a guide tool library for a small hole electric discharge machine is provided, which includes a base 1, a fixing plate 2, a movable plate 3, and a guide tool rack 4.

[0043] The base 1 is fixedly installed on a small hole electric discharge machine. The fixing plate 2 is fixedly connected to the base 1. The movable plate 3 is movably connected to the fixing plate 2, such that the movable plate 3 can move back and forth in the horizontal direction relative to the fixing plate 2 under the action of an external force.

[0044] Among them, the movable plate 3 is arranged outside the fixing plate 2 and is parallel to the fixing plate 2, while the base 1 is located inside the fixing plate 2.

[0045] In this embodiment, a first linear guide rail 21 extending forward and backward is provided on the fixing plate 2, and a first guide rail slider 31 matching the first linear guide rail 21 is provided on the movable plate 3, such that the movable plate 3 can move back and forth from the front end to the rear end of the fixing plate 2 under the action of an external force.

[0046] A driving mechanism is further included, and the driving mechanism drives the movable plate 3 to move back and forth. In this embodiment, the driving mechanism is a telescopic cylinder. The telescopic cylinder includes a cylinder body 51 and a piston rod 52. The cylinder body 51 is fixedly connected to the fixing plate 2, and the piston rod 52 is fixedly connected to the movable plate 3. Thus, the piston rod 52 is extended and retracted to drive the movable plate 3 to move back and forth. Specifically, the telescopic cylinder is arranged inside the fixing plate 2. The cylinder body 51 of the telescopic cylinder is fixedly connected to the rear end of the fixing plate 2, and the piston rod 52 is fixedly connected to the front end of the movable plate 3. When the piston rod 52 extends forward, it drives the movable plate 3 to move forward. In actual implementation, other structures such as a motor can also be used as the driving mechanism.

[0047] The guide holder 4 is provided with four guide placement positions 41 for placing guides 7 of different specifications. Each of the guide placement positions 41 is horizontally arranged in the left - right direction on the guide holder 4. Each of the guide placement positions 41 is provided with a vertical positioning pin 42, which corresponds to the guide 7. The bottom of the guide 7 is provided with a corresponding hole. In the assembled state, the guide 7 is fixed in the horizontal direction through the cooperation relationship between the hole and the positioning pin 42. And the clamping component (not shown in the figure) on the electric discharge small - hole machine can move the guide 7 up and down to place it back or remove it.

[0048] The guide holder 4 is arranged on the movable plate 3 and is movably connected to the movable plate 3, so that the guide holder 4 can move back and forth in the horizontal direction relative to the movable plate 3 under the action of an external force.

[0049] In this embodiment, the movable plate 3 is provided with a second linear guide rail 32 extending in the front - rear direction, and the guide holder 4 is provided with a second guide rail slider 44 matching the second linear guide rail 32, so that the guide holder 4 can move back and forth from the front end of the movable plate 3 to the rear end of the movable plate 3 under the action of an external force.

[0050] Among them, a magnet 33 is provided at the front end of the movable plate 3, and a metal baffle 45 that attracts the magnet 33 is provided on the guide holder 4. When the guide holder 4 moves to the front end of the movable plate 3, it is positioned at the front end of the movable plate 3 under the magnetic attraction between the magnet 33 and the metal baffle 45; the metal baffle 45 can be made of carbon steel.

[0051] When the guide magazine for the electric discharge small - hole machine is in use, it is installed on the corresponding electric discharge small - hole machine and can cooperate with the electric discharge small - hole machine to automatically replace the guide 7; in the standby state, the guide holder 4 is positioned at the front end of the movable plate 3, the movable plate 3 is positioned at the rear end of the fixed plate 2, and the guide holder 4 is in a standby position, as Figure 1 shown; and when it is necessary to replace the guide 7, the relative position relationship between the guide holder 4 and the movable plate 3 remains unchanged, and the driving mechanism drives the movable plate 3 to move forward until the movable plate 3 is positioned at the front end of the fixed plate 2, so that the guide holder 4 is in a replacement position, as Figure 4 shown. At this time, the guide magazine is in the replacement state, and the clamping component on the electric discharge small - hole machine can place the old guide back on the guide holder 4 and clamp a new guide from the guide holder 4 for replacement, so as to realize the automatic replacement of the guide 7. During this process, there is no need to interrupt the working process of the equipment, which can improve the working efficiency of the electric discharge small - hole machine.

[0052] When manual intervention is required to replace the guide 7 in the guide library, the drive mechanism is first used to drive the movable plate 3 to be positioned at the rear end of the fixed plate 2. Then, the operator pulls the guide frame 4 backward, so that it overcomes the magnetic attraction and moves backward away from the front end of the movable plate 3 until the guide frame 4 is positioned at the rear end of the movable plate 3. Thus, the guide frame 4 is in a manual operation position, as Figure 5 shown. At this time, the guide frame 4 is closest to the operator, facilitating manual operation. At this time, the guide library is in the manual operation state.

[0053] After the operator replaces the guide 7, the guide frame 4 needs to be pushed back to the front end of the movable plate 3 and positioned under the action of magnetic attraction.

[0054] Through the double-layer parallel movement design of the guide frame 4 and the movable plate 3, and the movable plate 3 and the fixed plate 2, the guide frame 4 has two strokes. Only one stroke is enabled during the automatic operation of the equipment, and the other stroke is enabled when manual intervention is required. Thus, while increasing the movement stroke of the guide frame 4, the size of the equipment is compressed, making the equipment structure compact, reducing the occupied space, and improving the space utilization efficiency.

[0055] In this embodiment, a handle 43 is provided at the rear end of the guide frame 4 for the operator to pull.

[0056] In this embodiment, a first proximity switch corresponding to the movable plate 3 is provided at the front end of the fixed plate 2, a second proximity switch corresponding to the movable plate 3 is provided at the rear end of the fixed plate 2, a third proximity switch corresponding to the guide frame 4 is provided at the front end of the movable plate 3, and a fourth proximity switch corresponding to the guide frame 4 is provided at the rear end of the movable plate 3. Thus, the positions of the movable plate 3 and the guide frame 4 are sensed by each proximity switch to ensure that the guide frame 4 is in the standby position before the machine tool operates, avoiding collision accidents.

[0057] In this embodiment, a front buffer 61 and a rear buffer 62 are provided on the side of the fixed plate 2 facing the movable plate 3. The front buffer 61 is provided at the front end of the fixed plate 2, and the rear buffer 62 is provided at the rear end of the fixed plate 2. A positioning block 63 is fixed on the movable plate 3. The positioning block 63 is located between the front buffer 61 and the rear buffer 62. In the state where the movable plate 3 moves to the front end of the fixed plate 2, the positioning block 63 abuts against the front buffer 61. In the state where the movable plate 3 moves to the rear end of the fixed plate 2, the positioning block 63 abuts against the rear buffer 62. Thus, the movable plate 3 is limited by the buffer, and at the same time, a buffering effect is achieved when the movable plate 3 stops.

[0058] Among them, both the front buffer 61 and the rear buffer 62 are hydraulic buffers, including a buffer cylinder 64 and a buffer rod 65 arranged pointing to the positioning block 63. The specific principle is prior art, well-known to those skilled in the art, and not the inventive point of this case, so it will not be elaborated here. A positioning nut 66 is sleeved on the buffer cylinder 64. When the positioning block 63 reaches the hydraulic buffer, it first contacts the buffer rod 65 for buffering, gradually pushes the buffer rod 65 into the buffer cylinder 64. After the buffer rod 65 is completely pushed into the buffer cylinder 64, the positioning block 63 contacts and abuts against the positioning nut 66, as Figure 7 shown, so as to ensure that the movable plate 3 stops accurately in place.

[0059] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A guide holder library for a small hole EDM machine, characterized in that: it includes a base, a fixed plate, a movable plate and a guide holder; the base is installed on a small hole EDM machine, the fixed plate is fixedly connected to the base, the movable plate is movably connected to the fixed plate, so that the movable plate can move back and forth horizontally relative to the fixed plate under the action of an external force; it further includes a driving mechanism, and the driving mechanism drives the movable plate to move back and forth; a plurality of guide holder placement positions are provided on the guide holder, the guide holder is arranged on the movable plate and is movably connected to the movable plate, so that the guide holder can move back and forth horizontally relative to the movable plate under the action of an external force; a magnet is provided at the front end of the movable plate, and a metal baffle that attracts the magnet is provided on the guide holder. When the guide holder moves to the front end of the movable plate, it is positioned at the front end of the movable plate under the magnetic attraction between the magnet and the metal baffle; a first linear guide rail extending forward and backward is provided on the fixed plate, and a first guide rail slider matching the first linear guide rail is provided on the movable plate, so that the movable plate can move back and forth from the front end to the rear end of the fixed plate under the action of an external force; a second linear guide rail extending forward and backward is provided on the movable plate, and a second guide rail slider matching the second linear guide rail is provided on the guide holder, so that the guide holder can move back and forth from the front end to the rear end of the movable plate under the action of an external force.

2. The guide holder library for a small hole EDM machine according to claim 1, characterized in that: a first proximity switch corresponding to the movable plate is provided at the front end of the fixed plate, and a second proximity switch corresponding to the movable plate is provided at the rear end of the fixed plate.

3. The guide holder library for a small hole EDM machine according to claim 1, characterized in that: the driving mechanism is a telescopic cylinder, the telescopic cylinder includes a cylinder body and a piston rod, the cylinder body is fixedly connected to the fixed plate, and the piston rod is fixedly connected to the movable plate.

4. The guide holder library for a small hole EDM machine according to claim 1, characterized in that: a third proximity switch corresponding to the guide holder is provided at the front end of the movable plate, and a fourth proximity switch corresponding to the guide holder is provided at the rear end of the movable plate.

5. The guide holder library for a small hole EDM machine according to claim 1, characterized in that: the guide holder placement positions are horizontally arranged on the guide holder in the left-right direction, and positioning pins are provided on each of the guide holder placement positions.

6. The guide holder library for a small hole EDM machine according to claim 1, characterized in that: a handle is provided at the rear end of the guide holder.

7. The guide holder library for a small hole EDM machine according to claim 1, characterized in that: One side of the fixed plate facing the movable plate is provided with a front buffer and a rear buffer, wherein the front buffer is arranged at the front end of the fixed plate, and the rear buffer is arranged at the rear end of the fixed plate; a positioning block is fixed on the movable plate, and the positioning block is located between the front buffer and the rear buffer. In the state where the movable plate moves to the front end of the fixed plate, the positioning block abuts against the front buffer, and in the state where the movable plate moves to the rear end of the fixed plate, the positioning block abuts against the rear buffer.

8. The guide holder library for a small hole electric discharge machine according to claim 7, characterized in that: Both the front buffer and the rear buffer are hydraulic buffers, including a buffer cylinder and a buffer rod pointing towards the positioning block; a positioning nut is sleeved on the buffer cylinder. When the positioning block abuts against the hydraulic buffer, the buffer rod is completely pushed into the buffer cylinder, and the positioning block abuts against the positioning nut.

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