Tool changing mechanism of tool magazine of drilling and tapping machine

Abstract

The utility model relates to the technical field of numerical control drilling and tapping machines, in particular to a drilling and tapping machine tool magazine tool changing mechanism which comprises a lifting support, a support installed on the lifting support and a drilling and tapping machine spindle connected to the support, one end of the support is rotationally connected with a tool disc through an arm rod, and a rotating mechanism capable of driving the tool disc to rotate is arranged on the arm rod. A group of clamping parts for maintenance is rotated to the position below the cutter head, then an output shaft of an electric cylinder is started to move downwards, and a C-shaped push head can push a bent block on the group of clamping parts downwards, so that the group of clamping parts can be overturned towards the outer side of the cutter head, and people can maintain the cutter head conveniently; and the output shaft of the electric cylinder is controlled to move upwards, so that the clamping part is overturned towards the inner side of the cutter head under the action of the torsional spring to be reset, and therefore, a worker cannot be shielded by the outer wall of the cutter head when lubricating and maintaining the clamping part overturned out of the outer side of the cutter head, and the maintenance process is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled drilling and tapping machines, in particular to a tool changing mechanism of a tool magazine of a drilling and tapping machine. Background Art

[0002] A drilling and tapping machine is an electric tool or CNC machining equipment that integrates drilling and tapping functions. It is mainly used for hole processing and thread processing of materials such as metal, wood, and plastic.

[0003] Chinese patent CN22119972U discloses a tool changing mechanism and a drilling and tapping machine, including a support frame, a first motor is fixedly connected to one side of the top surface of the support frame, a screw is fixedly connected to the output end of the first motor, a mounting seat is provided in the middle of the support frame, and the mounting seat is threadedly connected to the screw. The clamping mechanism on the turntable in the tool changing mechanism of this drilling and tapping machine is used to hang the tool of the drilling and tapping machine. Since the tool and the clamping mechanism on the turntable will wear during the tool changing process, the clamping mechanism needs to be lubricated and maintained regularly during daily use. However, the cutter disc in this structure is an integrated structure, and the clamping mechanism cannot be flipped out of the outside of the cutter disc. When the staff lubricates and maintains the clamping mechanism toward the inside of the cutter disc, it will be blocked by the outer wall of the cutter disc, which makes the maintenance process more inconvenient. Utility Model Content

[0004] The utility model provides a tool changing mechanism for a tool magazine of a drilling and tapping machine, which solves the technical problem in the prior art that it is inconvenient to maintain a clamping mechanism on a cutter disc.

[0005] In view of the above problems, the technical solution proposed by the present invention is:

[0006] A tool changing mechanism for a drilling and tapping machine magazine comprises a lifting support, a bracket installed on the lifting support, and a drilling and tapping machine spindle connected to the bracket, one end of the bracket is connected to a cutter disc through an arm rod, and the arm rod is provided with a rotating mechanism that can drive the cutter disc to rotate, the edge of the cutter disc is composed of several groups of separated clamping parts, the ends of the clamping parts are provided with hanging slots, each group of the clamping parts is hinged to the cutter disc through a hinge, and a torsion spring is provided at the hinged part of the clamping part and the arm rod, an electric cylinder is installed in the middle of the cutter disc, one end of the output shaft of the electric cylinder faces below the arm rod and is connected to a C-shaped push head, and each group of the clamping parts is fixedly connected to a bending block that cooperates with the C-shaped push head.

[0007] Furthermore, a roller is rotatably provided on the bending block.

[0008] Furthermore, a sleeve is provided on the clamping part near both sides of the hanging slot, and a marble is provided inside the sleeve. The marble is exposed to the outside of the clamping part through an opening at one end of the sleeve, and a spring is provided inside the sleeve, and one end of the spring is in conflict with the marble.

[0009] Furthermore, a cover plate is provided on the rear side of the cutter disc.

[0010] Furthermore, the back side of the clamping portion is provided with reinforcing ribs, and the reinforcing ribs are longitudinally distributed in two groups on the back side of the clamping portion.

[0011] Furthermore, the hanging groove is an arc-shaped structure, and a protrusion is provided on the inner wall of the hanging groove.

[0012] Compared with the prior art, the beneficial effect of the present invention is that by rotating a group of clamping parts to be maintained to the bottom of the cutter disc, and then starting the output shaft of the electric cylinder to move downward, the C-shaped push head will push the curved block on this group of clamping parts downward, so that this group of clamping parts can be flipped toward the outside of the cutter disc for people to perform maintenance. Controlling the output shaft of the electric cylinder to move upward can make the clamping parts flip and reset toward the inside of the cutter disc under the action of the torsion spring. Therefore, the staff will not be blocked by the outer wall of the cutter disc when lubricating and maintaining the clamping parts flipped out of the cutter disc, making the maintenance process more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the split structure of the lifting and lowering support and bracket of the utility model;

[0016] Figure 3 This is a schematic diagram of the back structure of the cutter head in the present invention;

[0017] Figure 4 This is a structural diagram of the clamping portion and the sleeve in the utility model;

[0018] Figure 5 It is a structural schematic diagram of the electric cylinder and C-shaped push head in the utility model.

[0019] In the figure: 1. Lifting support; 2. Bracket; 3. Drilling machine spindle; 4. Arm; 5. Cutter head; 6. Clamping part; 7. Electric cylinder; 8. C-shaped push head; 9. Bending block; 10. Hanging slot; 11. Roller; 12. Sleeve; 13. Marble; 14. Cover plate; 15. Reinforcement rib; 16. Raised part. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] See also Figure 1-5 , a tool changing mechanism for a drilling and tapping machine magazine, including a lifting support 1, a bracket 2 installed on the lifting support 1, and a drilling and tapping machine spindle 3 connected to the bracket 2. One end of the bracket 2 is rotatably connected to a cutter disc 5 through an arm rod 4. The arm rod 4 is provided with a rotating mechanism that can drive the cutter disc 5 to rotate. The edge of the cutter disc 5 is composed of several groups of separated clamping parts 6. The end of the clamping part 6 is provided with a hanging slot 10. Each group of clamping parts 6 is hinged to the cutter disc 5 through a hinge, and the hinged part of the clamping part 6 and the arm rod 4 is provided with a torsion spring. An electric cylinder 7 is installed in the middle of the cutter disc 5. One end of the output shaft of the electric cylinder 7 faces the bottom of the arm rod 4 and is connected to a C-shaped push head 8. Each group of clamping parts 6 is fixedly connected to a bending block 9 that cooperates with the C-shaped push head 8.

[0023] When the cutter head 5 is rotated under the driving action of the rotating mechanism, several groups of clamping parts 6 can be rotated to the lowest position of the cutter head 5 in sequence. When one group of clamping parts 6 is rotated to the lowest position of the cutter head 5, the bent block 9 on this group of clamping parts 6 will be located inside the C-shaped push head 8 at one end of the output shaft of the electric cylinder 7. Therefore, when the tool needs to be changed during the operation of the drilling and tapping machine, the C-shaped push head 8 will not hinder the rotation of the cutter head 5. When it is necessary to lubricate and maintain the hanging groove 10 on one group of clamping parts 6, this group of clamping parts 6 is controlled to rotate to the lowest position of the cutter head 5. At this time, the electric cylinder 7 is started so that its output shaft pushes the C-shaped push head 8 downward. During the downward movement of the C-shaped push head 8, the position As for the bending block 9 inside it, since the ends of the clamping part 6 are hinged on the cutter disc 5, the bending block 9 will drive the clamping part 6 to flip outward under the pushing action of the C-shaped push head 8. At this time, people can conveniently lubricate and maintain the hanging groove 10 on this group of clamping parts 6 to reduce the wear between the tool and the hanging groove 10 during the tool change process. After the lubrication and maintenance of this group of clamping parts 6 are completed, the C-shaped push head 8 is driven to move upward and reset by controlling the output shaft of the electric cylinder 7. The bending block 9 is no longer subject to the downward push of the C-shaped push head 8. During this process, the clamping part 6 will be flipped and reset to the inside of the cutter disc 5 under the action of the torsion spring, so that the tool can be hung normally.

[0024] For further information, see Figure 4 A roller 11 is rotatably provided on the bending block 9.

[0025] When the bending block 9 pushes the C-shaped push head 8 downward, the roller 11 on the surface of the bending block 9 will roll in contact with the inner wall of the C-shaped push head 8, thereby preventing wear during the contact between the inner wall of the C-shaped push head 8 and the bending block 9.

[0026] For further information, see Figure 4 A sleeve 12 is provided on the clamping part 6 near both sides of the hanging groove 10, and a marble 13 is provided inside the sleeve 12. The marble 13 is exposed to the outside of the clamping part 6 through an opening at one end of the sleeve 12. A spring is provided inside the sleeve 12, and one end of the spring is in conflict with the marble 13.

[0027] The spring inside the sleeve 12 can always produce an elastic pushing effect on the marble 13. Under this pushing effect, a part of the marble 13 can always be exposed through the opening of the sleeve 12. When the tool is hung in the hanging groove 10 at the end of the clamping part 6, the two groups of marbles 13 exposed on the outside of the sleeve 12 can block the tool in the hanging groove 10, making it difficult to slide out of the hanging groove 10 at the end of the clamping part 6. In addition, since the marble 13 will move toward the inside of the sleeve 12 and compress the spring inside the sleeve 12 after being subjected to a certain pressure, it will not hinder the tool from being hung on the clamping part 6, nor will it hinder the drilling machine spindle 3 from grabbing the tool from the clamping part 6.

[0028] For further information, see Figure 2 A cover plate 14 is provided on the rear side of the cutter disc 5 .

[0029] When the drilling and tapping machine is processing a workpiece, the cover plate 14 can prevent the generated debris from splashing into the interior of the cutter head 5 .

[0030] For further information, see Figure 4 The back of the clamping portion 6 is provided with reinforcing ribs 15 , and the reinforcing ribs 15 are longitudinally distributed in two groups on the back of the clamping portion 6 .

[0031] Since the thickness of the clamping portion 6 is relatively thin, the reinforcing ribs 16 can enhance the bending resistance of the reinforcing ribs 16 , thereby preventing the clamping portion 6 from bending due to external forces during the turning process.

[0032] For further information, see Figure 4 The hanging groove 10 is an arc-shaped structure, and a protrusion 16 is provided on the inner wall of the hanging groove 10.

[0033] When the tool is mounted inside the mounting groove 10 , the protrusion 16 can be clamped under the clamping ring on the tool surface, and the arc-shaped mounting groove 10 can fit the circular contour of the drilling and tapping tool.

[0034] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A tool changing mechanism for a drilling and tapping machine magazine, comprising a lifting support (1), a bracket (2) mounted on the lifting support (1), and a drilling and tapping machine spindle (3) connected to the bracket (2); one end of the bracket (2) is rotatably connected to a cutter disc (5) via an arm (4); a rotating mechanism for driving the cutter disc (5) to rotate is provided on the arm (4), and the mechanism is characterized in that: The edge of the cutter disc (5) is composed of a plurality of groups of separated clamping parts (6), the ends of the clamping parts (6) are provided with hanging grooves (10), each group of the clamping parts (6) is hinged to the cutter disc (5) through a hinge, and a torsion spring is provided at the hinged portion between the clamping parts (6) and the arm (4), an electric cylinder (7) is installed in the middle of the cutter disc (5), one end of the output shaft of the electric cylinder (7) faces the bottom of the arm (4) and is connected to a C-shaped push head (8), and a bending block (9) that matches the C-shaped push head (8) is fixedly connected to each group of the clamping parts (6).

2. The tool changing mechanism of the drilling and tapping machine tool magazine according to claim 1, characterized in that: A roller (11) is rotatably provided on the bending block (9).

3. The tool changing mechanism of the drilling and tapping machine tool magazine according to claim 1, characterized in that: A sleeve (12) is provided on the clamping portion (6) at positions close to both sides of the hanging groove (10), a marble (13) is provided inside the sleeve (12), and the marble (13) is exposed outside the clamping portion (6) through an opening at one end of the sleeve (12), and a spring is provided inside the sleeve (12), and one end of the spring is in contact with the marble (13).

4. The tool changing mechanism of the drilling and tapping machine tool magazine according to claim 1, characterized in that: A cover plate (14) is provided on the rear side of the cutter disc (5).

5. The tool changing mechanism of the drilling and tapping machine tool magazine according to claim 1, characterized in that: The back of the clamping portion (6) is provided with reinforcing ribs (15), and the reinforcing ribs (15) are longitudinally distributed in two groups on the back of the clamping portion (6).

6. The tool changing mechanism of the drilling and tapping machine tool magazine according to claim 1, characterized in that: The hanging groove (10) is an arc-shaped structure, and a protrusion (16) is provided on the inner wall of the hanging groove (10).

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