Quick angle adjusting and positioning device and electric discharge machine

Abstract

The embodiment of the utility model discloses a rapid angle adjusting and positioning device and an electric discharge machine, and the rapid angle adjusting and positioning device comprises a fixed disc which is used for being connected with a machine tool spindle; one end of the connecting plate is detachably connected with the lower portion of the fixing disc through a plurality of first connecting bolts, and the other end of the connecting plate is used for being connected with an electrode of an electric discharge machine; wherein a limiting piece is arranged on the connecting plate, an annular step part is arranged on the periphery of the fixing disc, and the relative position of the limiting piece and the annular step part meets the condition that a gap exists between the head of the limiting piece and the annular step part in the state that the first connecting bolt is tightened; when the first connecting bolt is in an unscrewed state, the connecting plate moves downwards in the gravity direction till the head of the limiting piece makes contact with the annular step part, and therefore the connecting plate is supported. According to the positioning device capable of rapidly adjusting the angle, the connecting plate can be prevented from falling due to the action of gravity through matching of the limiting piece and the annular step part, it is guaranteed that the connecting plate is automatically stabilized when the angle is adjusted, additional assistance is not needed, accurate adjustment can be completed by a single person, and meanwhile operation safety and working efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of tooling technology for electrical discharge machines, and more specifically, to a quick-adjustment angle positioning device and an electrical discharge machine. Background Technology

[0002] In existing technologies, electrical discharge machining (EDM) tools typically use the machine spindle as the mounting reference for the electrode to ensure machining accuracy and stability. For this purpose, a machine tool mounting table is fixedly installed on the machine spindle as an electrode mounting platform. The electrode is mounted on the machine tool mounting table via a positioning device to ensure accurate positioning and stable support of the electrode.

[0003] Existing positioning devices typically include a fixed plate and a connecting plate. The fixed plate is fixedly connected to the machine tool connecting table, one end of the connecting plate suspends the electrode, and the other end is suspended from the lower part of the fixed plate. The relative angle between the fixed plate and the connecting plate is adjustable to provide the necessary support and adjustment functions.

[0004] Because the electrode is suspended from one end of the connecting plate, the center of gravity of the connecting plate shifts. When loosening the connecting bolts to adjust the angle, the connecting plate is prone to rotating or falling due to gravity, increasing the difficulty of operation. Existing solutions typically require two operators: one to tighten or loosen the bolts, and the other to hold the connecting plate to prevent accidental drops or displacement. This not only increases labor costs but may also lead to decreased accuracy in electrode angle adjustment due to human error, affecting processing results. Summary of the Invention

[0005] This utility model aims to solve one of the technical problems in related technologies to a certain extent. To this end, the embodiments of this utility model propose a quick angle adjustment positioning device. By cooperating with the limiting member and the annular step, the connecting plate can be prevented from falling due to gravity, ensuring its automatic stability when adjusting the angle without additional assistance. This allows a single person to complete precise adjustment, while improving operational safety and work efficiency.

[0006] This utility model embodiment also proposes an EDM machine having the above-mentioned positioning device.

[0007] The technical solution adopted by this utility model is: to provide a quick-adjustment angle positioning device, comprising:

[0008] A fixed plate, used to connect the machine tool spindle;

[0009] The connecting plate has one end detachably connected to the lower part of the fixed plate by a number of first connecting bolts, and the other end is used to connect to the electrode of the EDM machine.

[0010] The connecting plate is provided with a limiting member, and the outer periphery of the fixing plate is provided with an annular step portion. The relative positions of the limiting member and the annular step portion satisfy the following:

[0011] With the first connecting bolt tightened, there is a gap between the head of the limiting member and the annular step portion;

[0012] With the first connecting bolt loosened, the connecting plate moves downward along the direction of gravity until the head of the limiting member contacts the annular step portion, thereby supporting the connecting plate.

[0013] With the above structure, the cooperation between the limiting component and the annular step effectively prevents the connecting plate from rotating or falling due to gravity when adjusting the angle. This ensures that the operator can complete the angle adjustment without additional assistance, allowing a single person to do so. Specifically, when the operator loosens the first connecting bolt, the connecting plate moves downward along the direction of gravity until the head of the limiting component contacts the annular step, forming a support and stabilizing the posture of the connecting plate, preventing accidental displacement of the electrode suspension part. This structural design greatly reduces the need for manual intervention, not only improving work efficiency but also ensuring the accuracy of electrode angle adjustment.

[0014] Furthermore, the gap between the limiting component and the annular step ensures that the connecting plate remains in the predetermined position when the fixing bolts are tightened, thus avoiding errors during angle adjustment. Operators only need to adjust the angle of the connecting plate and loosen the first connecting bolt; the connecting plate will then be automatically stabilized by the limiting component and the annular step, eliminating the need for manual support and greatly improving operational safety and precision.

[0015] According to one embodiment of the present invention, the connecting plate is provided with a positioning member, and the fixing plate is provided with a plurality of positioning grooves corresponding to the positioning member; the positioning member is inserted into the corresponding positioning groove on the fixing plate, thereby fixing the relative angle between the connecting plate and the fixing plate; effectively locking the relative angle between the connecting plate and the fixing plate, thereby avoiding unexpected angle deviation during the adjustment process.

[0016] According to one embodiment of the present invention, the connecting plate is provided with a first connecting hole, and the first connecting bolt passes through the first connecting hole and connects to the fixing plate.

[0017] According to one embodiment of the present invention, a limiting bolt is provided in the first connecting hole, and a portion of the limiting bolt extends into the first connecting hole to prevent the first connecting bolt from dislodging from the first connecting hole in a loose state; thereby preventing the first connecting bolt from falling off during angle adjustment and reducing the time and effort wasted in finding the lost first connecting bolt.

[0018] According to one embodiment of this utility model, a bearing is provided between the connecting plate and the fixed plate; the bearing effectively reduces the frictional resistance between the connecting plate and the fixed plate, ensuring smooth movement of the connecting plate during angle adjustment. By introducing the bearing, the connecting plate can rotate more smoothly during adjustment, thereby greatly reducing the mechanical burden during operation and making angle adjustment more convenient and precise.

[0019] According to one embodiment of this utility model, the connecting plate is connected to the center of the fixed disk via a connecting shaft, and the connecting shaft is coaxially arranged with the bearing to provide rotational support; this design ensures that the connecting plate can rotate smoothly around the center of the fixed disk when adjusting the angle. The coaxial arrangement of the connecting shaft and the cooperation with the bearing effectively reduce the offset and friction of the connecting plate during rotation, making the adjustment process smoother and more precise.

[0020] According to one embodiment of the present invention, an elastic element is provided between the connecting plate and the fixed plate, and the elastic element has an elastic tendency to move the connecting plate away from the fixed plate.

[0021] According to one embodiment of the present invention, the fixed plate is provided with a plurality of wiring slots, which are used for connecting external cables.

[0022] According to one embodiment of the present invention, the connecting plate is connected to the electrode via a clamp.

[0023] According to one embodiment of the present invention, the connecting shaft and the fixed disk form a limiting movable connection. In this connection state, the connecting shaft can move in a predetermined direction to adjust the distance between the connecting plate and the fixed disk. At the same time, the connecting shaft is provided with an anti-detachment limiting structure to prevent it from falling off, thereby ensuring that the connecting plate is always suspended under the fixed disk.

[0024] An electrical discharge machine includes any of the aforementioned quick-adjustment angle positioning devices. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a perspective view of the EDM machine in the embodiment of this utility model.

[0027] Figure 2 This is a partial cross-sectional view of the EDM machine in an embodiment of this utility model.

[0028] Figure 3 This is a schematic diagram of the structure of the quick-adjustment angle positioning device in the embodiments of this utility model.

[0029] Figure 4 This is an exploded view of the rapid angle adjustment positioning device in the embodiment of this utility model.

[0030] Figure 5 This is a perspective view of the quick-adjustment angle positioning device in the embodiments of this utility model.

[0031] Figure 6 This is a partial exploded view of the rapid angle adjustment positioning device in the embodiments of this utility model.

[0032] Figure 7 This is a schematic diagram showing the connection between the connecting plate and the fixed plate in an embodiment of this utility model.

[0033] Figure 8 This is an exploded structural diagram of the rapid angle adjustment positioning device in the embodiments of this utility model.

[0034] Figure 9 This is a structural diagram of the quick-adjustment angle positioning device in an embodiment of this utility model.

[0035] Explanation of the labels in the diagram:

[0036] 1. Machine tool connecting table; 2. Connecting plate; 3. Chuck; 4. Fixed plate; 5. First connecting bolt; 6. T-block; 7. Cable; 8. Limiting component; 9. Second connecting bolt; 10. Positioning component; 11. Connecting shaft; 12. Limiting bolt; 13. Bearing; 14. Elastic component; 15. Spring sleeve;

[0037] 1a. T-slot;

[0038] 2a. First connecting hole; 2b. Limiting hole;

[0039] 4a. Annular stepped section; 4b. Wiring groove; 4c. Central groove; 4d. Positioning groove; 4f. Second connecting hole; 4e. Third connecting hole;

[0040] 10a. Locating bolt; 10b. Cylindrical pin. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Example 1

[0042] like Figure 1-9 As shown, this embodiment discloses a rapid angle adjustment positioning device, including:

[0043] Fixed plate 4, which is used to connect the machine tool spindle;

[0044] The connecting plate 2 has one end detachably connected to the lower part of the fixed plate 4 by a number of first connecting bolts 5, and the other end is used to connect to the electrode of the EDM machine.

[0045] The connecting plate 2 is provided with a limiting member 8, and the outer periphery of the fixing plate 4 is provided with an annular step portion 4a. The relative positions of the limiting member 8 and the annular step portion 4a satisfy the following:

[0046] When the first connecting bolt 5 is tightened, there is a gap between the head of the limiting member 8 and the annular step portion 4a.

[0047] With the first connecting bolt 5 loosened, the connecting plate 2 moves downward along the direction of gravity until the head of the limiting member 8 contacts the annular step portion 4a, thereby supporting the connecting plate 2.

[0048] Furthermore, in this embodiment, the machine tool connecting table 1 is specifically designed to be mounted on the spindle of the machine tool and driven by the machine tool spindle, enabling it to move in at least one of the X, Y, and Z directions to meet the processing requirements under different working conditions.

[0049] The fixing plate 4 is generally disc-shaped, with four T-shaped blocks 6 on its upper part and four third connecting holes 4e running through it to provide a reliable fixing structure. Specifically, four second connecting bolts 9 pass through the third connecting holes 4e and are threaded to the T-shaped blocks 6, so that the T-shaped blocks 6 are firmly installed on the upper part of the fixing plate 4, ensuring that the fixing plate 4 will not loosen or shift during use.

[0050] Correspondingly, the machine tool connecting table 1 is provided with a T-slot 1a that matches the T-block 6. When installing the fixed plate 4, the T-block 6 can be precisely embedded into the T-slot 1a and further fixed by a threaded connection, thereby achieving stable installation of the fixed plate 4 under the machine tool connecting table 1. This connection method not only enhances the rigidity and load-bearing capacity of the fixed plate 4, but also facilitates disassembly and replacement, improving the maintainability and service life of the equipment.

[0051] Furthermore, the lower edge of the fixed plate 4 is symmetrically provided with two notched wiring grooves 4b, each containing a screw hole for mounting terminal blocks, making electrical connections more convenient and reliable. The terminal blocks are used to connect cables 7, thereby ensuring the stable operation of the machine tool's electrical system and meeting the equipment's electrical connection requirements.

[0052] In addition, a central groove 4c is provided at the lower center of the fixed disk 4. The main function of the central groove 4c is to install the bearing 13. The bearing 13 is located between the fixed disk 4 and the connecting plate 2, and plays a supporting and rotational guiding role. During the operation of the machine tool, the bearing 13 can effectively reduce the friction between the fixed disk 4 and the connecting plate 2, so that the connecting plate 2 can rotate smoothly, ensuring machining accuracy while extending the service life of the parts.

[0053] Furthermore, combining Figure 8 As shown, a bearing 13, a spring sleeve 15, and an elastic element 14 are sequentially arranged between the fixed disk 4 and the connecting plate 2. The outer diameter of the bearing 13 is adapted to the inner diameter of the central groove 4c, and the outer diameter of the spring sleeve 15 is adapted to the inner diameter of the bearing 13. The lower end of the spring sleeve 15 has an opening to accommodate the elastic element 14, which is a helical spring. The bearing 13, spring sleeve 15, and elastic element 14 are arranged coaxially. One end of the elastic element 14 abuts against the fixed disk 4, and the other end abuts against the spring sleeve 15, causing the spring sleeve 15 to fit against the connecting plate 2. This creates an elastic tendency for the elastic element 14 to push the connecting plate 2 away from the fixed disk 4. Furthermore, a connecting shaft 11 passes sequentially through the connecting plate 2, spring sleeve 15, and elastic element 14, and is threadedly connected to the fixed disk 4. The bearing 13 effectively reduces friction between the fixed disk 4 and the connecting plate 2, making their relative rotation smoother.

[0054] Furthermore, in this embodiment, the connecting plate 2 is provided with two first connecting holes 2a, and the fixing plate 4 is provided with multiple second connecting holes 4f. When the connecting plate 2 is adjusted to a predetermined angle, the two connecting holes align with two of the second connecting holes 4f. For example, in this embodiment, the minimum adjustment angle of the connecting plate 2 is 90°, then four second connecting holes 4f are arranged in a ring on the fixing plate 4. When the minimum adjustment angle of the connecting plate 2 is 60°, six second connecting holes 4f are arranged in a ring on the fixing plate 4; when the minimum adjustment angle of the connecting plate 2 is 30°, twelve second connecting holes 4f are arranged in a ring on the fixing plate 4, and so on.

[0055] Correspondingly, the bottom of the fixed plate 4 is provided with multiple positioning grooves 4d, and two positioning elements 10 are installed on the connecting plate 2. When the connecting plate 2 is adjusted to a predetermined angle, one end of the positioning element 10 passes through the connecting plate 2 and is inserted into the corresponding two positioning grooves 4d, thereby achieving positioning and fixation. For example, in this embodiment, if the minimum adjustment angle of the connecting plate 2 is 90°, then four positioning grooves 4d are distributed in a ring on the fixed plate 4; when the minimum adjustment angle is 60°, six positioning grooves 4d are distributed in a ring on the fixed plate 4; if the minimum adjustment angle is 30°, then twelve positioning grooves 4d are distributed in a ring on the fixed plate 4, and so on, to adapt to different angle requirements.

[0056] Furthermore, in this embodiment, the positioning element 10 includes a positioning bolt 10a and a cylindrical pin 10b, wherein the positioning groove 4d on the fixed plate 4 is slidably engaged with the cylindrical pin 10b, thereby confining the cylindrical pin 10b within the positioning groove 4d. The positioning bolt 10a passes through the connecting plate 2 and is threadedly connected to the cylindrical pin 10b. When the first connecting bolt 5 and the connecting shaft 11 are loosened, the distance between the fixed plate 4 and the connecting plate 2 increases, causing the cylindrical pin 10b to disengage from the positioning groove 4d, thus releasing the positioning state and facilitating the adjustment of the angle of the connecting plate 2.

[0057] Specifically, in combination Figure 7-9 As shown, a limiting bolt 12 is provided in the first connecting hole 2a. A portion of the limiting bolt 12 extends into the first connecting hole 2a to prevent the first connecting bolt 5 from dislodging from the first connecting hole 2a in a loose state. This prevents the first connecting bolt 5 from falling off during angle adjustment, reducing the time and effort wasted in finding the lost first connecting bolt 5. In this embodiment, the fixing plate 4 is provided with a limiting hole 2b, and the limiting bolt 12 is connected to a washer. The limiting is achieved by a portion of the washer abutting against the first connecting bolt 5.

[0058] Furthermore, in this embodiment, the quick-adjustment angle positioning device is used as follows:

[0059] First, loosen the first connecting bolt 5, allowing it to gradually detach from the fixing plate 4. Due to the presence of the limiting bolt 12, the head of the first connecting bolt 5 will abut against the limiting bolt 12, preventing the bolt from completely falling off. Next, continue to loosen the connecting shaft 11. As the connecting shaft 11 loosens, the gap between the fixing plate 4 and the connecting plate 2 gradually increases.

[0060] During this process, the connecting plate 2 slowly descends under the influence of gravity. In particular, because the electrode is mounted on the lower part of the other end of the connecting plate 2 via the clamp 3, its weight further propels the connecting plate 2 downwards. Simultaneously, the limiting member 8 (the bolt installed on the upper part of the connecting plate 2) moves downwards synchronously with the connecting plate 2 until the head of the limiting member 8 makes tight contact with the annular step 4a on the fixing plate 4. At this point, the limiting member 8 provides support, preventing the connecting plate 2 from accidentally falling due to loss of fixation, thus improving operational safety.

[0061] In this state, the connecting plate 2 can rotate freely, and the positioning component 10 will successively jump from one positioning slot 4d to the next positioning slot 4d along the rotation direction to achieve the positioning function. After rotating to the predetermined angle, the operator can lift the connecting plate 2 upwards to make it fit tightly against the fixed plate 4, and then tighten the connecting shaft 11 and the first connecting bolt 5 in sequence to lock the angle position. The entire process requires no additional assistance, and only one person is needed to complete the angle adjustment of the positioning device, making the operation simple and efficient.

[0062] Specifically, the connecting shaft 11 and the fixed disk 4 form a limiting movable connection. In this connection state, the connecting shaft 11 can move in a predetermined direction to adjust the distance between the connecting plate 2 and the fixed disk 4. At the same time, the connecting shaft 11 is provided with an anti-detachment limiting structure to prevent it from falling off, thereby ensuring that the connecting plate 2 is always suspended under the fixed disk 4.

[0063] Furthermore, in this embodiment, the limiting movable connection structure design between the connecting shaft 11 and the fixed disk 4 ensures that the connecting plate 2 will not accidentally fall off during adjustment, improving safety and operational stability. Specifically, the connecting shaft 11 passes through the connecting plate 2 and the fixed disk 4 sequentially from bottom to top, and is threadedly connected to the bolts on the fixed disk 4 to achieve reliable fixation.

[0064] The upper center of the fixed plate 4 has a stepped hole, inside which a bolt is installed. The lower end of the bolt is threaded to the upper end of the connecting shaft 11, and the head of the bolt abuts against the stepped surface inside the stepped hole. When the connecting shaft 11 is loosened, the gap between the connecting plate 2 and the fixed plate 4 gradually increases, allowing the connecting plate 2 to rotate and adjust. However, because the bolt head is blocked by the stepped surface, even if the connecting shaft 11 is completely loosened, the connecting shaft 11 still remains connected to the fixed plate 4, thus effectively preventing the connecting plate 2 from falling due to loss of support.

[0065] The design of this limiting movable connection not only ensures the safety of the connecting plate 2 when adjusting the angle, but also simplifies the operation process. After loosening the connecting shaft 11, the operator can freely adjust the angle of the connecting plate 2 without worrying about it accidentally slipping due to gravity. Once the target angle is reached, the operator simply needs to lift the connecting plate 2 upwards and retighten the connecting shaft 11 and the first connecting bolt 5 to complete the angle adjustment. The entire operation can be completed independently by a single person, and is convenient and efficient.

[0066] In another embodiment, an electrical discharge machine is disclosed, including the rapid angle adjustment positioning device described in this embodiment.

[0067] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A quick-adjustment angle positioning device, characterized in that, include: A fixed plate, used to connect the machine tool spindle; The connecting plate has one end detachably connected to the lower part of the fixed plate by a number of first connecting bolts, and the other end is used to connect to the electrode of the EDM machine. The connecting plate is provided with a limiting member, and the outer periphery of the fixing plate is provided with an annular step portion. The relative positions of the limiting member and the annular step portion satisfy the following: With the first connecting bolt tightened, there is a gap between the head of the limiting member and the annular step portion; With the first connecting bolt loosened, the connecting plate moves downward along the direction of gravity until the head of the limiting member contacts the annular step portion, thereby supporting the connecting plate.

2. The quick-adjustment angle positioning device according to claim 1, characterized in that: The connecting plate is provided with a positioning component, and the fixed plate is provided with multiple positioning grooves corresponding to the positioning component; the positioning component is inserted into the corresponding positioning groove on the fixed plate, thereby fixing the relative angle between the connecting plate and the fixed plate.

3. The quick-adjustment angle positioning device according to claim 1, characterized in that: The connecting plate is provided with a first connecting hole, and the first connecting bolt passes through the first connecting hole to connect with the fixing plate.

4. The quick-adjustment angle positioning device according to claim 3, characterized in that: A limiting bolt is provided in the first connecting hole, and a part of the limiting bolt extends into the first connecting hole to prevent the first connecting bolt from disengaging from the first connecting hole in a loose state.

5. The quick-adjustment angle positioning device according to claim 1, characterized in that: A bearing is provided between the connecting plate and the fixed plate.

6. The quick-adjustment angle positioning device according to claim 5, characterized in that: The connecting plate is connected to the center of the fixed disk via a connecting shaft, and the connecting shaft is coaxially arranged with the bearing to provide rotational support.

7. The quick-adjustment angle positioning device according to claim 5, characterized in that: An elastic element is provided between the connecting plate and the fixed plate, and the elastic element has an elastic tendency to move the connecting plate away from the fixed plate.

8. The quick-adjustment angle positioning device according to claim 1, characterized in that: The fixed plate is provided with several wiring slots, which are used for connecting external cables; The connecting plate is connected to the electrode via a clamp.

9. A quick-adjustment angle positioning device according to claim 6, characterized in that: The connecting shaft and the fixed plate form a limiting movable connection. In this connected state, the connecting shaft can move in a predetermined direction to adjust the distance between the connecting plate and the fixed plate. At the same time, the connecting shaft is provided with an anti-detachment limiting structure to prevent it from falling off, thereby ensuring that the connecting plate is always suspended under the fixed plate.

10. An electrical discharge machine, characterized in that: Includes the rapid angle adjustment positioning device as described in any one of claims 1-9.

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