Centering jig and spark machine

Abstract

The utility model relates to the technical field of machining, in particular to a centering jig and a spark machine. The centering jig comprises a connector structure suitable for being installed on a machine tool spindle of the spark machine; the adjusting device is connected with the connector structure, at least part of the adjusting device deviates from the vertical direction to extend, and an extending part is formed; and the centering reference balls are detachably connected to a plurality of positions of the extension part in the extension direction. According to the utility model, the extension part is formed on the adjusting device to provide a detachable connection position for the centering reference ball, and when the centering reference ball is detachably connected to a plurality of positions of the extension part along the extension direction, the axial distance between the centering reference ball and the joint structure is adjusted; the setting position of the centering reference ball on the adjusting device can extend outwards on the side of the machine tool spindle, so that the centering reference ball can directly make contact with the edge of a large workpiece exceeding the farthest stroke of the machine tool spindle of the spark machine, and then the centering reference ball can directly conduct centering positioning on the workpiece with the stroke exceeding the stroke of the spark machine.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a centering fixture and a spark machine. Background Art

[0002] At present, EDM technology is applied to the cutting of various workpieces. The working principle of EDM technology is: using pulsed spark discharge between the tool electrode and the workpiece electrode to erode metal to cut and shape. Using EDM technology to process workpieces requires operation on the spark machine, that is, using the centering reference ball to cut the workpiece, and before the workpiece is cut, it is necessary to find the edge of the workpiece, that is, use the centering reference ball to center the workpiece, but due to the limited stroke of the spark machine's processing machine, the size of the workpiece that the spark machine centers will be limited by the processing stroke of the processing machine. When centering large workpieces, part of the workpiece structure will exceed the farthest stroke of the spark machine's machine tool spindle, resulting in the centering reference ball set on the machine tool spindle being unable to directly center the workpiece. Utility Model Content

[0003] In view of this, the utility model provides a centering jig to solve the problem that when centering large workpieces, part of the workpiece structure will exceed the maximum stroke of the spark machine's machine tool spindle, resulting in the centering reference ball being unable to directly center and position the workpiece.

[0004] At the same time, the utility model provides a spark machine to solve the current problem that when centering large workpieces, part of the workpiece structure will exceed the maximum stroke of the spark machine's machine tool spindle, resulting in the centering reference ball being unable to directly center and position the workpiece.

[0005] In the first aspect, the utility model provides a centering jig, comprising: a joint structure, suitable for being installed on the machine tool spindle of a spark machine; an adjusting device, connected to the joint structure, the adjusting device at least partially extending away from the vertical direction and forming an extension portion; a centering reference ball, detachably connected to the extension portion at multiple positions along the extension direction.

[0006] Beneficial effect: The utility model provides a centering jig, which is connected to the machine tool spindle of the spark machine by setting a joint structure, and setting an adjusting device connected to the joint structure, and forming an extension part on the adjusting device to provide a detachable connection position for the centering reference ball. When the centering reference ball is detachably connected to multiple positions of the extension part along the extension direction, the axial distance between the centering reference ball and the joint structure can be adjusted, so that the centering reference ball can be extended to the side of the machine tool spindle at the setting position of the adjusting device, so that the centering reference ball can directly contact the edge of a large workpiece that exceeds the farthest stroke of the machine tool spindle of the spark machine, and then the centering reference ball can directly center and position the workpiece that exceeds the travel of the spark machine, thereby solving the problem that when centering large workpieces, part of the structure of the workpiece will exceed the farthest travel of the machine tool spindle of the spark machine, resulting in the centering reference ball being unable to directly center and position the workpiece.

[0007] In an optional embodiment, the adjusting device extends in a horizontal direction to form the extending portion.

[0008] Beneficial effect: The adjusting device is arranged to extend in the horizontal direction to form an extension portion, that is, the extension portion is formed by at least a portion of the adjusting device extending at an angle of 90 degrees away from the vertical direction, thereby maximizing the utilization efficiency of the extension portion in the adjusting device, and being able to achieve efficient adjustment of the axial distance between the centering reference ball and the joint structure in the shortest extension portion structure, and after the centering jig is installed on the spark machine, the centering reference ball can be brought close to the spark machine, so that the overall structure of the spark machine is compact, which is convenient for the processing operation of the spark machine.

[0009] In an optional embodiment, a plurality of mounting positions are provided on the extension portion along the extension direction, and the centering reference ball is detachably connected to one of the mounting positions.

[0010] Beneficial effect: Along the extension direction of the extension part, a plurality of installation positions are arranged on the extension part, so that the centering reference ball can be installed in any one of them for detachable connection installation, and the plurality of installation positions with different distances from the joint structure are convenient for adapting to different workpieces to be processed for production and processing.

[0011] In an optional embodiment, the centering reference ball is threadedly connected to the mounting position.

[0012] Beneficial effects: The centering reference ball is connected and installed to the installation position by means of threaded connection, which facilitates the rapid disassembly and replacement of the centering reference ball and improves the efficiency of disassembly and replacement of the centering reference ball.

[0013] In an optional embodiment, the mounting position is configured as a threaded through hole, the centering reference ball is provided with a threaded rod corresponding to the threaded through hole, and the threaded rod is threadedly connected to the threaded through hole to connect the centering reference ball to the extension portion.

[0014] Beneficial effect: The installation position is set as a threaded through hole, and a threaded rod corresponding to the threaded through hole is set on the centering reference ball. The threaded rod is directly screwed into the threaded through hole to realize the threaded connection and tightening of the centering reference ball and the installation position. When removing the centering reference ball, the centering reference ball is reversely screwed back into the threaded rod, so that the centering reference ball can be easily removed and the installation position can be changed.

[0015] In an optional embodiment, the mounting position is set as a through hole, the centering reference ball is provided with a threaded interface, and the adjusting screw passes through the through hole and is threadedly connected to the threaded interface to connect the centering reference ball to the extension portion.

[0016] Beneficial effects: The installation position is set as a through hole and a threaded interface is set on the top of the centering reference ball. The centering reference ball is threadedly connected to the threaded interface through an adjusting screw passing through the through hole to achieve threaded connection and tightening of the centering reference ball at the installation position. When removing the centering reference ball, the centering reference ball is fixed, and the adjusting screw is reversed and retracted to easily remove the centering reference ball and change the installation position.

[0017] In an optional implementation, the through hole is tapped with an internal thread corresponding to the external thread of the adjusting screw.

[0018] Beneficial effect: By setting an internal thread corresponding to the external thread of the adjusting screw in the through hole, when the adjusting screw passes through the through hole thread connection thread interface, the adjusting screw and the through hole can also be threadedly connected, thereby avoiding the interference fit between the rod body of the adjusting screw and the through hole causing the adjusting screw to cause the centering reference ball to shake, thereby improving the stability of the connection of the centering reference ball.

[0019] In an optional embodiment, the extension portion is at least partially recessed inward to form a groove, and the opening of the through hole on a side away from the centering reference ball is located at the bottom of the groove.

[0020] Beneficial effect: a groove is set at the top of the extension part, and the opening of the through hole on the side away from the centering reference ball is set at the bottom of the groove, so that the through hole passes through the extension part structure below the bottom of the groove. When the adjusting screw passes through the through hole and is threadedly connected to the threaded interface, the top of the adjusting screw will fall into the groove, so as to avoid the top position of the adjusting screw being too high and interfering with the main structure of the spark machine after the centering fixture is assembled with the main structure of the spark machine.

[0021] In an optional embodiment, the joint structure is connected to the adjusting device via a connecting screw.

[0022] Beneficial effect: The joint structure is connected to the adjusting device through connecting screws, which facilitates the disassembly and replacement of the centering reference ball connecting piece of the existing centering fixture, and the position of the centering reference ball can be adjusted by replacing the adjusting device.

[0023] In a second aspect, the utility model further provides a spark machine, comprising the centering fixture described in any one of the above-mentioned embodiments, wherein the joint structure is installed on a chuck of the machine tool spindle.

[0024] Because the spark machine includes a centering jig, it has the same effect as the centering jig and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A perspective view of a centering jig provided by the utility model;

[0027] Figure 2 The present invention is a schematic structural diagram of a centering reference ball provided by the present invention.

[0028] Description of reference numerals:

[0029] 1. Joint structure;

[0030] 2. Adjustment device; 201. Extension portion; 202. Mounting position; 203. Through hole; 204. Groove;

[0031] 3. Centering reference ball; 301, threaded interface;

[0032] 4. Adjust the screw;

[0033] 5. Connect the screws. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0035] Combine the following Figure 1 , Figure 2 , describing an embodiment of the utility model.

[0036] According to an embodiment of the present utility model, on the one hand, a centering fixture is provided, such as Figure 1 As shown, it includes: a joint structure 1, an adjusting device 2, a centering reference ball 3, etc.

[0037] The joint structure 1 is suitable for installation on the machine tool spindle of the spark machine; the adjustment device 2 is connected to the joint structure 1, and the adjustment device 2 at least partially extends away from the vertical direction and forms an extension part 201; the centering reference ball 3 is detachably connected to multiple positions of the extension part 201 along the extension direction.

[0038] Specifically, Figure 1 As shown, the joint structure 1 is suitable for connecting and installing with the machine tool spindle of the spark machine, so that the adjustment device 2 and the centering reference ball 3 are integrally installed on the machine tool spindle of the spark machine, so that the machine tool spindle of the spark machine can center and position the workpiece through the centering reference ball 3. The extension part 201 formed on the adjustment device 2 provides an installation position for the centering reference ball 3. Since the extension part 201 is formed by the adjustment device 2 at least partially extending away from the vertical direction, when the centering reference ball 3 is detachably connected to the extension part 201 at multiple positions along the extension direction, the axial distance between the centering reference ball 3 and the joint structure 1 can be adjusted, so that the centering reference ball 3 can be extended to the side of the machine tool spindle at the setting position of the adjustment device 2, so that the centering reference ball 3 can directly contact the edge of a large workpiece that exceeds the farthest travel of the machine tool spindle of the spark machine, and then the centering reference ball 3 can directly center and position the workpiece that exceeds the travel of the spark machine.

[0039] Furthermore, if Figure 1 As shown, in the present embodiment, the position adjustment of the centering reference ball 3 is achieved by detachable connection of the centering reference ball 3 at multiple positions along the extension direction of the extension part 201. When adjusting, it is only necessary to change the position of one component of the centering reference ball 3 separately, which greatly reduces the difficulty of adjusting the centering reference ball 3 in the spark machine and improves the convenience of adjustment.

[0040] Furthermore, if Figure 1 As shown, the limited extension portion 201 is formed by the adjustment device 2 at least partially deviating from the vertical direction. The setting of the adjustment device 2 at least partially deviating from the vertical direction makes it possible for the adjustment device 2 to be installed on the machine tool spindle of the spark machine through the joint structure 1. The extension portion 201 formed by this part of the deviation structure is away from the machine tool spindle. When the centering reference ball 3 is installed on the extension portion 201, it can be stably connected to a position at a certain distance from the machine tool spindle, thereby increasing the farthest position that the centering reference ball 3 can reach through the machine tool spindle, so that the centering reference ball 3 can directly center the workpiece that exceeds the travel of the spark machine.

[0041] Further, in Figure 1There are two centering reference balls 3 as seen from the viewing angle, which is only for the purpose of demonstrating that the centering reference balls 3 can be set at different extension positions of the extension part 201. In actual work, the centering fixture only needs to be provided with one centering reference ball 3 to complete the production and processing of the workpiece.

[0042] Furthermore, this embodiment does not limit the specific deviation angle of the adjustment device 2 at least partially deviating from the vertical direction. It can be understood that as long as at least part of the structure of the adjustment device 2 is offset in the vertical direction, it can ensure that the extension portion 201 formed by this part of the deviation structure is offset in the direction away from the main axis of the machine tool, and it can ensure that the centering reference ball 3 is installed at a certain distance from the main axis of the machine tool. Of course, as a preferred embodiment, the adjustment device 2 at least partially deviates from the vertical direction at an angle of 90 degrees, that is, the adjustment device 2 extends in the horizontal direction to form the extension portion 201.

[0043] Furthermore, the present embodiment does not impose any restriction on the detachable connection method between the centering reference ball 3 and the extension part 201. The connection method between the centering reference ball 3 and the extension part 201 includes but is not limited to threaded connection, snap connection, etc. A corresponding connection and matching structure is provided between the centering reference ball 3 and the extension part 201.

[0044] The present embodiment provides a centering jig, which connects the machine tool spindle of the spark machine by setting a joint structure 1, and sets an adjustment device 2 connected to the joint structure 1, and forms an extension portion 201 on the adjustment device 2 to provide a detachable connection position for the centering reference ball 3. When the centering reference ball 3 is detachably connected to multiple positions of the extension portion 201 along the extension direction, the axial distance between the centering reference ball 3 and the joint structure 1 can be adjusted, so that the centering reference ball 3 can be extended to the side of the machine tool spindle at the setting position of the adjustment device 2, so that the centering reference ball 3 can directly contact the edge of a large workpiece that exceeds the farthest stroke of the machine tool spindle of the spark machine, and then the centering reference ball 3 can directly center the workpiece that exceeds the travel of the spark machine, thereby solving the problem that when centering a large workpiece, part of the structure of the workpiece will exceed the farthest travel of the machine tool spindle of the spark machine, resulting in the centering reference ball 3 being unable to directly center the workpiece.

[0045] In one embodiment, Figure 1 As shown, as a preferred embodiment, the adjusting device 2 extends in the horizontal direction to form an extension portion 201 .

[0046] Specifically, the adjusting device 2 is arranged to extend in the horizontal direction to form an extension portion 201, that is, the extension portion 201 is formed by the adjusting device 2 at least partially extending at an angle of 90 degrees away from the vertical direction, thereby maximizing the utilization efficiency of the extension portion 201 in the adjusting device 2, and realizing efficient adjustment of the axial distance between the centering reference ball 3 and the joint structure 1 in the shortest extension portion 201 structure, and after the centering jig is installed on the spark machine, the centering reference ball 3 can be brought close to the spark machine, so that the overall structure of the spark machine is compact, which is convenient for the processing operation of the spark machine.

[0047] In one embodiment, Figure 1 As shown, a plurality of mounting positions 202 are arranged on the extension portion 201 along the extension direction, and the centering reference ball 3 can be detachably connected to one of the mounting positions 202 .

[0048] Specifically, Figure 1 As shown, along the extension direction of the extension part 201, a plurality of mounting positions 202 are provided on the extension part 201, so that the centering reference ball 3 can be installed in any one of the mounting positions 202 for detachable connection installation. The plurality of mounting positions 202 with different distances from the joint structure 1 are convenient for adapting to different workpieces to be processed for production and processing.

[0049] Furthermore, the extension portion 201 has a Figure 1 From the perspective, it extends from left to right.

[0050] Furthermore, if Figure 1 As shown, in this embodiment, five mounting positions 202 are arranged on the extension portion 201 along the extension direction.

[0051] In one embodiment, Figure 1 As shown, as a preferred embodiment, the centering reference ball 3 is threadedly connected to the mounting position 202 .

[0052] Specifically, Figure 1 As shown, the centering reference ball 3 is connected and installed with the mounting position 202 by means of a threaded connection, so that the centering reference ball 3 can be quickly disassembled and replaced, thereby improving the efficiency of disassembly and replacement of the centering reference ball 3.

[0053] In one embodiment, the mounting position 202 is configured as a threaded through hole, and the centering reference ball 3 is provided with a threaded rod corresponding to the threaded through hole, and the threaded rod is threadedly connected to the threaded through hole to connect the centering reference ball 3 to the extension portion 201 .

[0054] Specifically, as an implementation mode, the mounting position 202 is set as a threaded through hole, and a threaded rod corresponding to the threaded through hole is set on the centering reference ball 3. The threaded rod is directly screwed into the threaded through hole to realize the threaded connection and fastening between the centering reference ball 3 and the mounting position 202. When removing the centering reference ball 3, the centering reference ball 3 is screwed back on the threaded rod in the reverse direction, so that the centering reference ball 3 can be easily removed and the installation position can be changed.

[0055] In one embodiment, Figure 1 , Figure 2 As shown, the mounting position 202 is set as a through hole 203, the centering reference ball 3 is provided with a threaded interface 301, and the adjusting screw 4 passes through the through hole 203 and is threadedly connected to the threaded interface 301 to connect the centering reference ball 3 to the extension part 201.

[0056] Specifically, Figure 1 , Figure 2 As shown, as another embodiment, the mounting position 202 is set as a through hole 203 and a threaded interface 301 is set on the top of the centering reference ball 3, and the adjusting screw 4 is passed through the through hole 203 and threadedly connected with the threaded interface 301 to realize the threaded connection and fastening of the centering reference ball 3 at the mounting position 202. When removing the centering reference ball 3, the centering reference ball 3 is fixed, and the adjusting screw 4 is reversely screwed back, so that the centering reference ball 3 can be easily removed and the installation position can be changed.

[0057] In one embodiment, Figure 1 As shown, the through hole 203 is tapped with an internal thread corresponding to the external thread of the adjusting screw 4 .

[0058] Specifically, Figure 1 As shown, by setting an internal thread corresponding to the external thread of the adjusting screw 4 in the through hole 203, when the adjusting screw 4 passes through the through hole 203 and is threadedly connected to the threaded interface 301, the adjusting screw 4 and the through hole 203 can also be threadedly connected, thereby avoiding the interference fit between the rod body of the adjusting screw 4 and the through hole 203, which causes the adjusting screw 4 to drive the centering reference ball 3 to shake, thereby improving the stability of the connection of the centering reference ball 3.

[0059] In one embodiment, Figure 1 , Figure 2 As shown, the extension portion 201 is at least partially recessed inward to form a groove 204 , and the opening of the through hole 203 on one side away from the centering reference ball 3 is located at the bottom of the groove 204 .

[0060] Specifically, Figure 1As shown, a groove 204 is provided at the top of the extension part 201, and the opening of the through hole 203 on one side away from the centering reference ball 3 is provided at the bottom of the groove 204, so that the through hole 203 passes through the extension part 201 structure below the bottom of the groove 204, and when the adjusting screw 4 passes through the through hole 203 and is threadedly connected with the threaded interface 301, the top of the adjusting screw 4 will fall into the groove 204, so as to avoid the top position of the adjusting screw 4 being too high and interfering with the main structure of the spark machine after the centering fixture is assembled with the main structure of the spark machine.

[0061] Furthermore, when the top of the adjusting screw 4 is set as a polygonal screwing head, the groove 204 is set as a polygonal contour corresponding to the shape of the polygonal screwing head. When the adjusting screw 4 passes through the through hole 203 and is threadedly connected with the threaded interface 301, the top screwing head of the adjusting screw 4 falls into the polygonal contour of the groove 204 and is limited. When the centering reference ball 3 is disassembled, the position of the adjusting screw 4 is fixed by the limiting cooperation between the top screwing head of the adjusting screw 4 and the polygonal contour of the groove 204, and there is no need to additionally fix the centering reference ball 3, thereby improving the convenience of disassembling the centering reference ball 3.

[0062] In one embodiment, Figure 1 , the joint structure 1 is connected to the adjusting device 2 via the connecting screws 5.

[0063] Specifically, Figure 1 As shown, the joint structure 1 is connected to the adjusting device 2 via the connecting screws 5, so as to facilitate the disassembly and replacement of the connecting piece of the centering reference ball 3 of the existing centering fixture, and to replace the adjusting device 2 to facilitate the position adjustment of the centering reference ball 3.

[0064] According to an embodiment of the present invention, on the other hand, a spark machine is provided, comprising a centering fixture according to any of the above embodiments, wherein the joint structure 1 is installed on a chuck of a main shaft of a machine tool.

[0065] Because the spark machine includes a centering jig, it has the same effect as the centering jig and will not be described in detail here.

[0066] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A centering fixture, characterized in that: include: The joint structure (1) is suitable for being installed on the machine tool spindle of the spark machine; An adjusting device (2) connected to the joint structure (1), wherein the adjusting device (2) at least partially extends away from the vertical direction and is formed with an extension portion (201); The centering reference ball (3) is detachably connected to a plurality of positions of the extension portion (201) along the extension direction.

2. The centering jig according to claim 1, characterized in that: The adjusting device (2) extends in a horizontal direction to form the extending portion (201).

3. The centering jig according to claim 1 or 2, characterized in that: A plurality of mounting positions (202) are arranged on the extension portion (201) along the extension direction, and the centering reference ball (3) is detachably connected to one of the mounting positions (202).

4. The centering jig according to claim 3, characterized in that: The centering reference ball (3) is threadedly connected to the mounting position (202).

5. The centering jig according to claim 4, characterized in that: The mounting position (202) is configured as a threaded through hole, the centering reference ball (3) is provided with a threaded rod corresponding to the threaded through hole, and the threaded rod is threadedly connected to the threaded through hole to connect the centering reference ball (3) to the extension portion (201).

6. The centering jig according to claim 4, characterized in that: The mounting position (202) is configured as a through hole (203), the centering reference ball (3) is provided with a threaded interface (301), and an adjusting screw (4) passes through the through hole (203) and is threadedly connected to the threaded interface (301) to connect the centering reference ball (3) to the extension portion (201).

7. The centering jig according to claim 6, characterized in that: The through hole (203) is tapped with an internal thread corresponding to the external thread of the adjusting screw (4).

8. The centering jig according to claim 6, characterized in that: The extension portion (201) is at least partially recessed inward to form a groove (204), and the opening of the through hole (203) on one side away from the centering reference ball (3) is located at the bottom of the groove (204).

9. The centering jig according to any one of claims 1-2 and 4-8, characterized in that: The joint structure (1) is connected to the adjustment device (2) via a connecting screw (5).

10. A spark machine, characterized in that: It comprises the centering fixture as claimed in any one of claims 1 to 9, wherein the joint structure (1) is installed on the chuck of the machine tool spindle.

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