Multi-angle perforating jig and clamping tool thereof

Abstract

The utility model relates to the technical field of hole machining, and discloses a multi-angle perforating jig which comprises a connecting rod and a jig head, the jig head comprises a supporting block installed at the tail end of the connecting rod, a chuck is arranged at the end, opposite to the connecting rod, of the supporting block, a product is arranged on the chuck in a sleeved mode, and the product and the chuck rotate synchronously. An avoiding groove is formed in the circumferential surface of the chuck; a to-be-perforated product is arranged on the chuck in a sleeving mode, the connecting rod can drive the product to rotate around the axis through the jig head, and then multi-angle perforating on the circumferential side face of the product is achieved. And the avoiding grooves are formed in the chucks, so that the chucks can be prevented from being damaged during perforation.

Description

Technical Field

[0001] This utility model relates to the field of hole processing technology, specifically to a multi-angle perforation fixture and its clamping tooling. Background Technology

[0002] A discharge drilling machine is a specialized electrical discharge machining (EDM) device for machining small holes. Based on the principle of electrical discharge machining, a pulse voltage is applied between the tool electrode (usually a thin electrode wire or a shaped electrode) and the workpiece. When the distance between the two electrodes is small enough to reach a certain discharge gap (generally a few micrometers to tens of micrometers), the working fluid (such as insulating oil specifically for EDM) is broken down, forming a discharge channel. The plasma temperature inside the discharge channel is extremely high, reaching 10,000-12,000°C. Under this high temperature, the material on the surface of the workpiece will melt and vaporize instantly.

[0003] Parts to be drilled usually have corresponding jigs and tooling for clamping, but when the small hole is on the circumferential surface of the part, such as a blind hole cylindrical part (e.g.) Figure 5 As shown, existing fixtures cannot meet the requirements for clamping blind hole cylindrical parts during drilling, nor can they adjust the drilling angle, especially when it is necessary to machine oblique holes on the parts; therefore, we propose a multi-angle drilling fixture and its clamping tooling. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a multi-angle perforation fixture. The product is fitted onto the clamp of the fixture head, and the connecting rod drives the product to rotate around the axis through the fixture head, which can realize multi-angle perforation.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a multi-angle perforation fixture, including a connecting rod and a fixture head, wherein the fixture head includes a support block installed at the end of the connecting rod, and a clamp is provided at one end of the support block opposite to the connecting rod, the product is sleeved on the clamp and rotates synchronously with it, and an avoidance groove is provided on the circumferential surface of the clamp.

[0006] Optionally, the product includes a main body with an inner hole and a second groove on the side wall of the inner hole; a first groove is also provided on the circumferential surface of the chuck, a cylindrical pin is embedded in the first groove, and the cylindrical pin is embedded in the second groove when the chuck is inserted into the inner hole.

[0007] Optionally, the connecting rod includes a coaxial extension and a positioning part, which are integrally formed. The positioning part has a threaded hole, and the end of the support block opposite to the chuck is provided with a connecting part that can be screwed into the threaded hole.

[0008] Optionally, the inner side of the extension is provided with a positioning hole communicating with the threaded hole, and one end of the connecting part is equipped with a positioning rod that can be inserted into the positioning hole.

[0009] Optionally, a shoulder is provided between the support block and the chuck, the outer diameter of the shoulder is larger than the outer diameter of the chuck, and one end of the cylindrical pin extends through the shoulder and the support block into the threaded hole.

[0010] Optionally, the outer diameter of the positioning part is larger than the outer diameter of the extension part, a platform is provided on the outer circumferential surface of the positioning part, and a notch for positioning is opened on the side of the support block, and the two sides of the notch are perpendicular to each other.

[0011] A clamping fixture for a multi-angle perforation jig includes a support, a rotating shaft passing through the support, an installation hole being formed inside the rotating shaft, and a connecting rod of the multi-angle perforation jig being fixedly embedded in the installation hole.

[0012] Optionally, it also includes a horizontally arranged base plate, on which a mounting plate for supporting the support is fixedly installed. The mounting plate is inclined relative to the base plate, and the pivot is parallel to the mounting plate.

[0013] Optionally, a drive motor is fixedly mounted on the mounting plate, and the output end of the drive motor is connected to the rotating shaft through a belt drive assembly.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] (1) In this utility model, the product to be perforated is sleeved on the chuck, and the connecting rod can drive the product to rotate around the axis through the jig head, thereby realizing multi-angle perforation on the circumferential side; and a clearance groove is also provided on the chuck to avoid damage to the chuck during perforation.

[0016] (2) In this utility model, when the product is fitted onto the chuck, the two semicircular surfaces of the cylindrical pin are respectively embedded in the first groove and the second groove. When the connecting rod drives the jig head to rotate, the cylindrical pin acts as a connecting key, transmitting the torque of the chuck to the product and driving it to rotate around its own axis.

[0017] (3) In this utility model, the rotating shaft is parallel to the mounting plate, the mounting plate is inclined relative to the base plate, and the perforating fixture is coaxially mounted on the rotating shaft through the connecting rod, which facilitates the processing of the oblique hole. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the multi-angle perforation fixture in the embodiments of this utility model;

[0019] Figure 2This is an exploded structural diagram of the multi-angle perforation fixture in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the multi-angle perforation fixture in an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the fixture head in an embodiment of this utility model;

[0022] Figure 5 This is a structural schematic diagram of the product in an embodiment of this utility model;

[0023] Figure 6 This is a schematic diagram of the clamping fixture in an embodiment of this utility model;

[0024] Figure 7 This is a schematic diagram showing the positions of the connecting rod, support, and rotating shaft in an embodiment of this utility model;

[0025] Among them, 1 is the connecting rod; 101 is the extension part; 102 is the positioning part; 103 is the threaded hole; and 104 is the positioning hole.

[0026] 2. Fixture head; 201. Support block; 202. Connecting part; 203. Positioning rod; 204. Shoulder; 205. Chuck; 206. Clearance groove; 207. First groove; 3. Cylindrical pin;

[0027] 4. Product; 401. Main body; 402. Inner hole; 403. Straight hole; 404. Angled hole; 405. Second groove; 5. Base plate; 6. Mounting plate; 7. Rib plate; 8. Support; 9. Rotating shaft; 901. Mounting hole; 10. Drive motor; 11. Belt drive assembly. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0029] like Figure 3 , Figure 5 As shown, the product 4 targeted by this utility model includes a cylindrical body 401. The body 401 has an inner hole 402, which is a blind hole, so the body 401 is only open at one end. A straight hole 403 is opened on the circumferential surface of the body 401 by an electrical discharge drilling machine, and an oblique hole 404 is opened on the edge of the closed end of the body 401. The straight hole 403 is perpendicular to the axis of the body 401, and the angle between the oblique hole 404 and the axis of the body 401 is 45 degrees.

[0030] Example 1: As Figure 1As shown, a multi-angle perforation fixture includes a coaxial connecting rod 1 and a fixture head 2. The fixture head 2 is installed at the end of the connecting rod 1 and is used to clamp the product 4. The connecting rod 1 can drive the product 4 to rotate synchronously and coaxially through the fixture head 2.

[0031] The spindle of the EDM drilling machine is perpendicular to the horizontal plane and can move up and down along the axial direction. When machining the straight hole 403, the product 4 is perpendicular to the axis of the spindle. When machining the inclined hole 404, there is a certain angle between the product 4 and the axis of the spindle.

[0032] like Figure 2 , Figure 3 , Figure 4 As shown, the connecting rod 1 includes an integrally formed extension 101 and a positioning part 102, which are coaxial; the positioning part 102 has a threaded hole 103, and the inner side of the extension 101 has a positioning hole 104 that communicates with the threaded hole 103.

[0033] The jig head 2 includes a support block 201. One end of the support block 201 is provided with a connecting part 202, and the other end is provided with a shoulder 204. The end of the connecting part 202 opposite to the shoulder 204 is provided with a positioning rod 203, and the end of the shoulder 204 opposite to the connecting part 202 is provided with a chuck 205. The support block 201, the connecting part 202, the positioning rod 203, the shoulder 204, and the chuck 205 are all integrally formed, and the connecting part 202, the positioning rod 203, the shoulder 204, and the chuck 205 are all coaxial with the connecting rod 1.

[0034] Specifically, the outer side of the connecting part 202 is threaded, which can be screwed into the threaded hole 103 to facilitate the assembly and disassembly of the jig head 2 and the connecting rod 1; and the outer diameter of the positioning rod 203 is the same as the inner diameter of the positioning hole 104, which mainly plays a positioning role to ensure that the jig head 2 and the connecting rod 1 are coaxial.

[0035] The outer diameter of the positioning part 102 is larger than the outer diameter of the extension part 101. Its function is to achieve axial positioning of the positioning part 102 through its end face when the extension part 101 is installed into the drive fixture, so as to ensure accurate installation position.

[0036] Product 4 is mounted on chuck 205 and rotates synchronously with it. The outer diameter of shoulder 204 is larger than that of chuck 205. Shoulder 204 also plays an axial positioning role through its end face. That is, the inner diameter of inner hole 402 is the same as the outer diameter of chuck 205. Body 401 is mounted on chuck 205 through inner hole 402. The open end of body 401 abuts against the end face of shoulder 204.

[0037] The chuck 205 has multiple clearance grooves 206 on its circumferential surface. The clearance grooves 206 are parallel to the axial direction and are arranged in a circular array around the axis of the chuck 205. The clearance grooves 206 can prevent damage to the chuck 205 during perforation and extend the service life of the fixture.

[0038] Furthermore, a second groove 405 is provided on the side wall of the inner hole 402, and a first groove 207 corresponding to the second groove 405 is also provided on the circumferential surface of the chuck 205. A cylindrical pin 3 is embedded in the first groove 207, and the cylindrical pin 3 is embedded in the second groove 405 when the chuck 205 is inserted into the inner hole 402.

[0039] When product 4 is mounted on chuck 205, the two semicircular surfaces of cylindrical pin 3 are respectively embedded in the first groove 207 and the second groove 405. When connecting rod 1 drives jig head 2 to rotate, cylindrical pin 3 acts as a connecting key, transmitting the torque of chuck 205 to product 4, causing it to rotate around its own axis, thereby realizing multi-angle opening on the circumferential surface.

[0040] One end of the cylindrical pin 3 extends through the shoulder 204 and the support block 201 into the threaded hole 103, and the other end is embedded in the first groove 207. This structure can ensure the stable installation of the cylindrical pin 3 and prevent the cylindrical pin 3 from falling off when the product 4 is removed.

[0041] In addition, multiple platforms are provided on the outer circumferential surface of the positioning part 102, and the side of the support block 201 is provided with a notch for positioning, and the two sides of the notch are perpendicular to each other. The outer side of the positioning part 102 adopts a conical surface, and the multiple platforms are distributed in a circular array around the axis of the positioning part 102, which facilitates the assembly and disassembly of the connecting rod 1; while the two mutually perpendicular sides at the notch are used to calibrate the coordinates to ensure the accuracy of the opening of the product 4.

[0042] Example 2: Based on Example 1, this utility model also proposes a clamping fixture for a multi-angle perforation jig, which drives the connecting rod 1 and the jig head 2 to rotate around their own axis, while simultaneously satisfying the machining of the oblique hole 404 of product 4.

[0043] like Figure 6 , Figure 7As shown, the clamping fixture for the multi-angle perforation jig includes a horizontally arranged base plate 5, on which a mounting plate 6 is fixedly installed. The mounting plate 6 is inclined relative to the base plate 5, and the included angle between the two is 45 degrees. A drive motor 10 is fixedly installed on the mounting plate 6. A support 8 is provided on one side of the drive motor 10. A rotating shaft 9 passes through the support 8. A mounting hole 901 is opened inside the rotating shaft 9, and the connecting rod 1 of the multi-angle perforation jig is fixedly embedded in the mounting hole 901. The mounting plate 6 is used to support the support 8 and the drive motor 10. The rotating shaft 9 is parallel to the mounting plate 6, and the output end of the drive motor 10 is connected to the rotating shaft 9 through a belt drive assembly 11.

[0044] A rotating shaft 9 is mounted on a support 8, and a bearing is installed inside the support 8 to support the rotating shaft 9, enabling it to rotate stably around its own axis. The rotating shaft 9 and the support 8 are connected via a bearing. Both ends of the rotating shaft 9 extend to the outside of the support 8, with one end connected to a drive motor 10 and the other end connected to a multi-angle drilling fixture. The extension 101 of the connecting rod 1 is fixedly installed in the mounting hole 901, and the positioning part 102 is in contact with the end face of the rotating shaft 9. The drive motor 10 drives the rotating shaft 9 to rotate via a belt drive assembly 11, which in turn drives the connecting rod 1 to rotate. The connecting rod 1 then drives the product 4 to rotate via the fixture head 2, achieving hole processing at different angles.

[0045] The belt drive assembly 11 includes a synchronous belt and two pulleys, which is existing technology; in order to improve the stability of the connection between the mounting plate 6 and the base plate 5, a stiffening plate 7 is also provided between the two.

[0046] In addition, when machining the straight hole 403, the mounting plate 6 and the base plate 5 are parallel to each other, and the product 4 and the axis of the spindle are perpendicular to each other.

[0047] Working principle:

[0048] The jig head 2 is mounted on the rotating shaft 9 via the connecting rod 1, and the rotating shaft 9 is driven to rotate by the drive motor 10; the product 4 to be drilled is fitted on the chuck 205, and the cylindrical pin 3 drives the product 4 and the chuck 205 to rotate synchronously, so that the EDM drilling machine can open the straight hole 403 and the oblique hole 404 on the circumference of the product 4; and when machining the oblique hole 404, the included angle between the mounting plate 6 and the base plate 5 is 45 degrees.

[0049] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., 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, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0050] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A multi-angle perforation fixture, characterized in that: It includes a connecting rod (1) and a jig head (2). The jig head (2) includes a support block (201) installed at the end of the connecting rod (1). A chuck (205) is provided at one end of the support block (201) opposite to the connecting rod (1). The product (4) is sleeved on the chuck (205) and rotates synchronously with it. A clearance groove (206) is provided on the circumferential surface of the chuck (205).

2. The multi-angle perforation fixture according to claim 1, characterized in that: The product (4) includes a main body (401), an inner hole (402) is provided on the main body (401), and a second groove (405) is provided on the side wall of the inner hole (402); a first groove (207) is also provided on the circumferential surface of the chuck (205), a cylindrical pin (3) is embedded in the first groove (207), and when the chuck (205) is embedded in the inner hole (402), the cylindrical pin (3) is embedded in the second groove (405).

3. The multi-angle perforation fixture according to claim 2, characterized in that: The connecting rod (1) includes a coaxial extension (101) and a positioning part (102), which are integrally formed. The positioning part (102) has a threaded hole (103), and the support block (201) has a connecting part (202) that can be screwed into the threaded hole (103) at one end opposite to the chuck (205).

4. The multi-angle perforation fixture according to claim 3, characterized in that: The extension (101) has a positioning hole (104) that communicates with the threaded hole (103) on its inner side, and a positioning rod (203) that can be inserted into the positioning hole (104) is installed at one end of the connecting part (202).

5. The multi-angle perforation fixture according to claim 4, characterized in that: A shoulder (204) is provided between the support block (201) and the chuck (205). The outer diameter of the shoulder (204) is larger than the outer diameter of the chuck (205), and one end of the cylindrical pin (3) extends through the shoulder (204) and the support block (201) into the threaded hole (103).

6. The multi-angle perforation fixture according to claim 5, characterized in that: The outer diameter of the positioning part (102) is larger than the outer diameter of the extension part (101). A platform is provided on the outer circumferential surface of the positioning part (102). The side of the support block (201) is provided with a notch for positioning, and the two sides of the notch are perpendicular to each other.

7. A clamping fixture for a multi-angle perforation jig as described in any one of claims 1-6, characterized in that: Includes a support (8), on which a rotating shaft (9) is passed, and a mounting hole (901) is opened inside the rotating shaft (9), and the connecting rod (1) of the multi-angle perforation fixture is fixedly embedded in the mounting hole (901).

8. The clamping fixture for the multi-angle perforation jig according to claim 7, characterized in that: It also includes a horizontally set base plate (5), on which a mounting plate (6) for supporting the support (8) is fixedly installed. The mounting plate (6) is inclined relative to the base plate (5), and the rotating shaft (9) is parallel to the mounting plate (6).

9. The clamping fixture for the multi-angle perforation jig according to claim 8, characterized in that: A drive motor (10) is fixedly mounted on the mounting plate (6), and the output end of the drive motor (10) is connected to the rotating shaft (9) through a belt drive assembly (11).

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