Automatic tool changing mechanism of electric spark machine tool

Abstract

The automatic tool changing mechanism comprises an electric spark machine head, a lower support is arranged at the lower end of the electric spark machine head through a mounting seat, a tool changing disc is rotationally arranged on the lower portion of the lower support through a connecting shaft, and a plurality of tools are arranged on the outer side of the tool changing disc through a positioning seat. A plurality of cutters are arranged on the outer side of the cutter replacing disc through positioning seats, a connecting shaft is arranged on the lower portion of the lower support, a motor is in transmission connection between the connecting shaft and the lower support through a gear set, and a cutter locking mechanism is further arranged between the cutter replacing disc and the lower support. The motor is in transmission connection between the connecting shaft and the lower support through the gear set, so that the motor and the gear set drive the connecting shaft and the cutter replacing disc to rotate and adjust, different cutters are switched for machining, cutter cutting is convenient and fast, and precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of electric spark machine tools, in particular to an automatic tool changing mechanism for electric spark machine tools. Background Art

[0002] The EDM machine tool, also known as CNC EDM machine tool, EDM, spark machine, etc., is an electrical processing equipment. In the prior art, when replacing the tool (electrode) of the EDM machine tool, the user puts the selection switch in the manual state and waits for the spindle to stop rotating, then holds the tool (electrode) and presses the tool release button on the operation panel to replace it, which is complicated and inconvenient.

[0003] An automatic tool changing device for an electric spark machine with application number 202320001949.8 in the prior art comprises a support table, a support block is fixedly connected to the left side of the top of the support table, a box is fixedly connected to the top of the support block, a first motor is fixedly connected to the left side of the box, a hydraulic rod is fixedly connected to the output shaft of the first motor, the hydraulic rod passes through the inner cavity of the box and is fixedly connected to a clamping mechanism. The utility model solves the problem of complicated and inconvenient operation of replacing and disassembling electrode clamps in existing electric spark machines by cooperating in setting a support table, a support block, a box, a first motor, a hydraulic rod, a clamping mechanism, a bearing, a turntable, a tool, a groove and a fixing mechanism. However, the tool switching operation is inconvenient and the precision is low. Moreover, one side of the tool changing disc after rotating the tool change cannot be locked, and the tool is easy to move, thereby affecting the precision of tool processing. Utility Model Content

[0004] The utility model aims to provide an automatic tool changing mechanism for an electric spark machine tool to solve the problems in the prior art that the tool switching operation is inconvenient, the precision is low, and one side of the tool changing disc cannot be locked after the tool is rotated and changed, and the tool is easy to move, thereby affecting the tool processing accuracy.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic tool changing mechanism for an electric spark machine tool, comprising an electric spark machine head, a lower bracket is provided at the lower end of the electric spark machine head through a mounting seat, a tool changing disc is provided at the lower part of the lower bracket through a connecting shaft, a plurality of cutting tools are provided on the outer side of the tool changing disc through a positioning seat, an electric motor is connected between the connecting shaft and the lower bracket through a gear set, and a tool disc locking mechanism is also provided between the tool changing disc and the lower bracket.

[0006] Furthermore, the mounting seat is fixedly mounted on the lower end of the EDM machine head by bolts, and the lower bracket is vertically welded to the mounting seat.

[0007] Furthermore, the multiple cutting tools have different specifications, and the multiple cutting tools are vertically arranged on the outside of the tool changing disc.

[0008] Furthermore, the tool disc locking mechanism includes a locking bracket laterally inserted into the side wall of the lower bracket through a cylinder, one end of the locking bracket is provided with multiple locking columns through a locking plate, and one side of the tool disc is provided with a locking groove that cooperates with the multiple locking columns.

[0009] Furthermore, the outer diameter of the locking column is smaller than the inner diameter of the locking groove, and the number of the locking columns and the locking grooves is set in multiples of the number of the cutting tools.

[0010] Furthermore, a guide hole is provided on the side wall of the lower bracket, and the locking bracket is slidably inserted into the guide hole.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, a tool changing disc is provided at the lower part of the lower bracket through a connecting shaft, a plurality of tools are provided on the outer side of the tool changing disc through a positioning seat, and a motor is connected between the connecting shaft and the lower bracket through a gear set transmission, so that the connecting shaft and the tool changing disc are driven by the motor and the gear set to rotate and adjust, thereby switching different tools for processing, and cutting is convenient and fast with high precision.

[0013] 2. The utility model also provides a tool disc locking mechanism between the tool changing disc and the lower bracket. The tool disc locking mechanism includes a locking bracket laterally inserted into the side wall of the lower bracket through a cylinder. A plurality of locking posts are provided at one end of the locking bracket through a locking plate. A locking groove cooperating with the plurality of locking posts is provided on one side of the tool changing disc. The number of locking posts and locking grooves is arranged in multiples of the number of tools, so that the locking bracket is driven to move and adjust by the cylinder, and a plurality of locking posts are inserted into the locking grooves on one side of the tool changing disc. This allows one side of the tool changing disc to be locked after a rotary tool change, which is beneficial to improving the structural stability of the tool after the tool change and is convenient for improving the accuracy of tool processing.

[0014] 3. The utility model has a guide hole opened in the side wall of the lower bracket, and the locking bracket is slidably inserted into the guide hole, so that the locking bracket can be slidably guided when moving and adjusting, which is beneficial to improving the locking stability of the locking bracket and the locking plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a left view of the tool changer structure of the utility model;

[0018] Figure 3This is a schematic diagram of the locking plate structure of the utility model.

[0019] In the figure: 1. EDM machine head; 2. Mounting seat; 3. Lower bracket; 4. Connecting shaft; 5. Gear set; 6. Motor; 7. Tool changer; 8. Positioning seat; 9. Tool; 10. Locking groove; 11. Locking bracket; 12. Cylinder; 13. Guide hole; 14. Locking plate; 15. Locking column. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 , Figure 2 , Figure 3 In the embodiment of the utility model, an automatic tool changing mechanism for an EDM machine tool comprises an EDM head 1, a lower bracket 3 is provided at the lower end of the EDM head 1 through a mounting seat 2, the mounting seat 2 is fixedly mounted at the lower end of the EDM head 1 by bolts, and the lower bracket 3 is vertically welded to the mounting seat 2, and a tool changing disc 7 is rotatably provided at the lower part of the lower bracket 3 through a connecting shaft 4, and a plurality of tools 9 are provided on the outer side of the tool changing disc 7 through a positioning seat 8, the specifications of the plurality of tools 9 are different, and the plurality of tools 9 are vertically arranged on the outer side of the tool changing disc 7, and a motor 6 is connected between the connecting shaft 4 and the lower bracket 3 through a gear set 5, so that the connecting shaft 4 and the tool changing disc 7 are driven by the motor 6 and the gear set 5 to rotate and adjust, thereby switching different tools 9 for processing and use, and the cutting is convenient and fast with high precision.

[0022] like Figure 1 and Figure 3 As shown, in order to lock one side of the tool changing disc 7 after the rotary tool change, a tool disc locking mechanism is further provided between the tool changing disc 7 and the lower bracket 3, and the tool disc locking mechanism includes a locking bracket 11 which is laterally inserted into the side wall of the lower bracket 3 through a cylinder 12, and a plurality of locking columns 15 are provided at one end of the locking bracket 11 through a locking plate 14, and a locking groove 10 which is inserted and matched with the plurality of locking columns 15 is provided on one side of the tool changing disc 7, and the outer diameter of the locking column 15 is smaller than the inner diameter of the locking groove 10, and the number of the locking columns 15 and the locking groove 10 is arranged in multiples of the number of the tools 9, so that the locking bracket 11 is driven to move and adjust by the cylinder 12, and the plurality of locking columns 15 on one side of the locking bracket 11 are inserted into the locking groove 10 on one side of the tool changing disc 7, so that one side of the tool changing disc 7 after the rotary tool change can be locked, which is beneficial to improving the structural stability of the tool 9 after the tool change, and is convenient for improving the accuracy of tool processing.

[0023] like Figure 1 and Figure 3 As shown, a guide hole 13 is also opened on the side wall of the lower bracket 3, and the locking bracket 11 is slidably inserted into the guide hole 13, so that the locking bracket 11 can be slidably guided when moving and adjusting, which is beneficial to improving the locking stability of the locking bracket 11 and the locking plate 14.

[0024] The working principle and use process of the utility model are as follows: when in use, a tool changing disc 7 is provided at the lower part of the lower bracket 3 of the EDM machine head 1 through a connecting shaft 4 for rotation, and a plurality of cutting tools 9 are provided on the outer side of the tool changing disc 7 through a positioning seat 8. A motor 6 is connected between the connecting shaft 4 and the lower bracket 3 through a gear set 5 for transmission, so that the connecting shaft 4 and the tool changing disc 7 are driven by the motor 6 and the gear set 5 to rotate and adjust, thereby switching different cutting tools 9 for use in processing, and cutting is convenient and fast with high precision; and a tool disc locking mechanism is also provided between the tool changing disc 7 and the lower bracket 3, so that one side of the tool changing disc 7 after rotating tool change can be locked, which is beneficial to improving the structural stability of the cutting tool 9 after tool change, and is convenient to improve the precision of tool processing.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An automatic tool changing mechanism for an electric spark machine tool, comprising an electric spark machine head (1), characterized in that: The lower end of the electric spark machine head (1) is provided with a lower bracket (3) via a mounting seat (2); a tool change disc (7) is rotatably provided at the lower part of the lower bracket (3) via a connecting shaft (4); a plurality of cutting tools (9) are provided on the outer side of the tool change disc (7) via a positioning seat (8); an electric motor (6) is transmission-connected between the connecting shaft (4) and the lower bracket (3) via a gear set (5); and a tool disc locking mechanism is also provided between the tool change disc (7) and the lower bracket (3).

2. The automatic tool changing mechanism for an electric spark machine tool according to claim 1, characterized in that: The mounting seat (2) is fixedly mounted on the lower end of the electric spark machine head (1) by means of bolts, and the lower bracket (3) is vertically welded to the mounting seat (2).

3. The automatic tool changing mechanism for an electric spark machine tool according to claim 1, characterized in that: The multiple cutters (9) have different specifications, and the multiple cutters (9) are vertically arranged outside the cutter disc (7).

4. The automatic tool changing mechanism for an electric spark machine tool according to claim 1, characterized in that: The tool disc locking mechanism comprises a locking bracket (11) which is laterally inserted into the side wall of the lower bracket (3) via a cylinder (12); one end of the locking bracket (11) is provided with a plurality of locking columns (15) via a locking plate (14); and one side of the tool disc (7) is provided with a locking groove (10) which is inserted and matched with the plurality of locking columns (15).

5. The automatic tool changing mechanism for an electric spark machine tool according to claim 4, characterized in that: The outer diameter of the locking column (15) is smaller than the inner diameter of the locking groove (10), and the number of the locking columns (15) and the locking grooves (10) is arranged in multiples of the number of the cutting tools (9).

6. The automatic tool changing mechanism for an EDM machine tool according to claim 4, characterized in that: A guide hole (13) is provided on the side wall of the lower bracket (3), and the locking bracket (11) is slidably inserted into the guide hole (13).

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