Tool changing mechanism of machine tool

Abstract

The utility model discloses a tool changing mechanism of a machine tool. The tool changing mechanism comprises a tool apron, a driving piece and a mechanical arm. A plurality of independent cutter chambers are arranged in the middle of the cutter holder, unlocking parts and locking parts are arranged in the cutter chambers, the unlocking parts are vertically arranged on the cutter holder, the lower ends of the unlocking parts extend into the cutter chamber to be matched with the locking parts, and the upper ends of the locking parts are hinged into the cutter chamber through a hinge shaft. According to the tool changing mechanism of the machine tool, the tool does not need to be changed, only the tool needs to be inserted into the tool chamber, and the locking piece acts on the outer wall face of the tool. Due to the fact that the center line of the arc-shaped locking face does not coincide with the center line of the hinge shaft, the position of the cutter is limited under the tension of the tension spring, and the cutter can be taken out only by pressing the unlocking piece. The tool changing structure is simple in structure and ingenious in design, the tool cannot be damaged, tool changing is convenient, and rapid tool taking of a tool changing mechanical arm is facilitated.

Description

Technical Field

[0001] This utility model relates to machine tool changing technology, and more particularly to a machine tool changing mechanism. Background Technology

[0002] A CNC lathe is a lathe with a horizontally arranged base. Its structure, performance, and uses are consistent with existing lathes. It has the advantages of simple structure, convenient operation, large spindle diameter, and small footprint. It is suitable for the machine and instrument industry for processing and repairing small mechanical parts.

[0003] CNC machine tools are devices used to process various parts, achieving fast and stable machining results. However, CNC machine tools require the use of multiple different cutting tools during machining, necessitating a mechanism that can position these tools. Furthermore, the tool change mechanism must be easy to implement without damaging the tool structure. Therefore, an automatic tool changer mechanism has been proposed. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model proposes a machine tool tool changing mechanism.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A machine tool tool changing mechanism, comprising:

[0007] A tool holder, wherein the tool holder has multiple individual tool chambers in the middle, and a cover plate is provided on the tool holder.

[0008] A driving component for rotating the tool holder, the driving component having a rotating shaft, and a rotating hole that mates with the rotating shaft being provided between the tool holder and the cover plate.

[0009] And a robotic arm for retrieving the knife, the robotic arm having an unlocking end and a gripping end.

[0010] The tool chamber is provided with an unlocking component and a locking component. The unlocking component is vertically mounted on the tool holder, with its lower end extending into the tool chamber to cooperate with the locking component. The upper end of the locking component is hinged to the tool chamber via a hinge shaft.

[0011] In this machine tool tool changing mechanism of the present invention, the cover plate is provided with a through hole for inserting the tool into the tool chamber.

[0012] In this machine tool tool changing mechanism of the present invention, the unlocking component is composed of a horizontal section and a vertical section. The horizontal section is located outside the tool holder and below the unlocking end. The tool holder is provided with a sliding hole that cooperates with the vertical section. The vertical section extends into the tool chamber and is provided with multiple first teeth.

[0013] In this machine tool tool changing mechanism of the present invention, the locking member consists of a hinge end and a locking end. The hinge end is hinged to the tool chamber through the hinge shaft, and the lower end face of the locking end forms an arc-shaped locking surface.

[0014] In this machine tool tool changing mechanism of the present invention, a positioning area for tool insertion is formed inside the tool chamber, and the positioning area is located at the lower end of the locking member.

[0015] In this machine tool tool changing mechanism of the present invention, the lower end of the locking member is provided with a notch, a first limiting rod is provided in the notch, a second limiting rod is provided in the tool chamber to cooperate with the first limiting rod, and a tension spring is provided between the first limiting rod and the second limiting rod.

[0016] The tool changing mechanism of this invention has the following advantages: It requires no modification to the tool; simply insert the tool into the tool chamber, and the locking element acts on the outer wall of the tool. Because the centerline of the arc-shaped locking surface does not coincide with the centerline of the hinge axis, and the tension of the spring restricts the tool's position, the tool can only be removed by pressing the unlocking element. This tool changing structure is not only simple and ingeniously designed, preventing damage to the tool, but also facilitates tool changing and allows the tool-changing robotic arm to quickly retrieve the tool. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the machine tool tool changing mechanism of this utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the tool holder, cover plate, and tool structure;

[0019] Figure 3 for Figure 2 Exploded view;

[0020] Figure 4 This is a schematic diagram of the locking component, unlocking component, and tension spring structure in this utility model;

[0021] Figure 5 This is a schematic diagram showing the installation status of the tool holder, cover plate, unlocking component, locking component, cutting tool, and tension spring in this utility model. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] like Figures 1 to 5As shown, this machine tool tool changing mechanism includes a tool holder 1, a drive unit 2, and a robotic arm 3. A cutting tool 4 is inserted into the middle of the tool holder 1, and its position is restricted by a locking member 5 inside the tool holder 1. The drive unit 2 drives the tool holder 1 to rotate, while the robotic arm 3 is used to remove the cutting tool 4 from the tool holder 1 and install it onto the machine tool for cutting operations.

[0024] The tool holder 1 has multiple individual tool chambers 6 in the middle, and the tool holder 1 has a cover plate 7. The cover plate 7 has a through hole 8 for inserting the tool 4 into the tool chamber 6.

[0025] The driving component 2 is used to drive the tool holder 1 to rotate. The driving component 2 is a motor. The driving component 2 is provided with a rotating shaft 9. The tool holder 1 and the cover plate 7 are provided with a rotating hole 10 that cooperates with the rotating shaft 9.

[0026] The robotic arm 3 is used to remove the cutting tool 4 from the cutting chamber 6. The robotic arm 3 is equipped with an unlocking end 11 and a gripping end 12. The unlocking end 11 is used to apply pressure to the unlocking member 13, while the gripping end 12 can clamp the cutting tool 4. When the unlocking end 11 pushes the unlocking member 13, the gripping end 12 has reached the positions of both sides of the cutting tool 4.

[0027] The tool chamber 6 is provided with an unlocking component 13 and a locking component 5. The unlocking component 13 is vertically arranged on the tool holder 1, and its lower end extends into the tool chamber 6 to cooperate with the locking component 5. The upper end of the locking component 5 is hinged to the tool chamber 6 through a hinge shaft 14.

[0028] The unlocking component 13 consists of a horizontal section 15 and a vertical section 16. The horizontal section 15 is located outside the tool holder 1 and below the unlocking end 11. The tool holder 1 is provided with a sliding hole 17 that mates with the vertical section 16. The vertical section 16 extends into the tool chamber 6 and is provided with multiple first teeth 18.

[0029] The locking component 5 consists of a hinge end 19 and a locking end 20. The hinge end 19 is hinged to the tool chamber 6 via a hinge shaft 14. The tool holder 1 has a first mounting hole 21 and a second mounting hole 22. The hinge shaft 14 is installed in the first mounting hole 21, and the second limiting rod 23 is installed in the second mounting hole 22. The hinge end 19 has a second tooth 181 that mates with the first tooth 18.

[0030] Meanwhile, the lower end face of the locking end 20 forms an arc-shaped locking surface 24. The arc-shaped locking surface 24 contacts any outer wall surface 25 of the tool 4, which can limit the position of the tool 4.

[0031] The tool chamber 6 forms a positioning area 26 for inserting the tool 4. The positioning area 26 is located at the lower end of the locking member 5. The arc-shaped locking surface 24 on the locking end 20 is rotated into the positioning area 26 by the tension of the tension spring 27.

[0032] Meanwhile, a notch 28 is provided at the lower end of the locking member 5, a first limiting rod 29 is provided in the notch 28, a second limiting rod 23 that cooperates with the first limiting rod 29 is provided in the knife chamber 6, and a tension spring 27 is provided between the first limiting rod 29 and the second limiting rod 23.

[0033] like Figure 5 As shown, the tool 4 has been inserted into the positioning area 26. At this time, the outer wall surface 25 of the tool 4 will contact the arc-shaped locking surface 24 and push the locking member 5 to rotate around the hinge axis 14, thereby stretching the tension spring 27 through the first limiting rod 29 on the locking member 5 and keeping the tension spring 27 with a certain elastic potential energy.

[0034] The distance between the hinge shaft 14 and the outer wall surface 25 of the tool 4 is H1, while the distance between the hinge shaft 14 and the contact point between the arc-shaped locking surface 24 and the outer wall surface 25 is H2, where H1 < H2. Therefore, due to the presence of the pull ring, when the unlocking member 13 is not pressed, there is friction between the locking member 5 and the tool 4, and the tool 4 is restricted by the locking member 5 and cannot be removed. Only when the robotic arm 3 moves down and applies pressure to the unlocking member 13 through the unlocking end 11, the first tooth 18 and the second tooth 181 on the unlocking member 13 engage, causing the hinge end 19 of the locking member 5 to rotate, so that the arc-shaped locking surface 24 no longer contacts the tool 4, and the tool 4 can be removed through the gripping end 12.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A machine tool tool changer, characterized in that, The utility model relates to a cutting tool magazine, comprising: a cutter seat, a plurality of individual cutter chambers are arranged in the middle of the cutter seat, a cover plate is arranged on the cutter seat, a driving part for driving the cutter seat to rotate, a rotating shaft is arranged on the driving part, a rotating hole is arranged in the middle of the cutter seat and the cover plate and matches the rotating shaft, and a mechanical arm for taking out the cutter, an unlocking end and a grabbing end are arranged on the mechanical arm, an unlocking part and a locking part are arranged in the cutter chamber, the unlocking part is arranged vertically on the cutter seat, the lower end extends into the cutter chamber and matches the locking part, the upper end of the locking part is hinged in the cutter chamber through a hinge shaft.

2. The machine tool tool changer according to claim 1, characterized in that A through hole is arranged on the cover plate, the cutter is inserted into the cutter chamber through the through hole.

3. The machine tool tool changer according to claim 1, characterized in that The unlocking part is composed of a horizontal section and a vertical section, the horizontal section is arranged outside the cutter seat and at the lower end of the unlocking end, a sliding hole matching the vertical section is arranged on the cutter seat, the vertical section extends into the cutter chamber, a plurality of first teeth are arranged on the vertical section.

4. A machine tool tool changer according to claim 3, characterized in that The locking part is composed of a hinge end and a locking end, the hinge end is hinged in the cutter chamber through the hinge shaft, the lower end surface of the locking end forms an arc-shaped locking surface.

5. A machine tool tool changer according to claim 4, characterized in that A positioning area for inserting the cutter is formed in the cutter chamber, the positioning area is located at the lower end of the locking part.

6. The machine tool tool changer according to claim 4, characterized in that A notch is arranged at the lower end of the locking part, a first limiting rod is arranged in the notch, a second limiting rod matching the first limiting rod is arranged in the cutter chamber, a tension spring is arranged between the first limiting rod and the second limiting rod.

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