Automatic tool changing device of large-scale high-speed gantry machining center

Abstract

The utility model belongs to the technical field of tool changing, particularly relates to an automatic tool changing device for a large-scale high-speed gantry machining center, and provides the following scheme aiming at the problems of lack of corresponding automatic tool changing devices, complicated operation and low tool changing efficiency in the prior art: the automatic tool changing device comprises a gantry body and a cutting motor arranged in the gantry body, a connecting shaft is arranged at the output end of the cutting motor, the milling cutter body is arranged at the bottom end of the connecting shaft and used for machining, a milling cutter clamp is arranged between the milling cutter body and the connecting shaft, and the milling cutter clamp is used for fixing the milling cutter body to the connecting shaft; a containing frame is arranged on one side of the portal frame body, a connecting block is rotationally arranged at the top end of the containing frame, fixing blocks are fixed to the two ends of the connecting block, lifting blocks are arranged in the two fixing blocks in a sliding mode, a twisting assembly is arranged in each lifting block, and the overall production efficiency and machining continuity of the machining center are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tool changing, in particular to an automatic tool changing device for a large-scale high-speed gantry machining center. Background Art

[0002] A gantry machining center is a machining center in which the axis of the spindle Z-axis is perpendicular to the worktable. The overall structure is a large-scale machining center with a gantry structure frame composed of double columns and a top beam, and there is a crossbeam in the middle of the double columns. A direct-drive high-speed gantry machining center is one of the gantry machining centers. The existing direct-drive high-speed gantry machining center requires frequent tool replacement when processing complex workpieces, and the existing milling cutter is not easy to quickly disassemble, replace, and overhaul.

[0003] The milling cutter in the gantry machining center needs to be replaced after being used for a certain period of time. The tool changing operation is performed manually, and there is a lack of corresponding automatic tool changing device, which makes the operation cumbersome and the tool changing efficiency low. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art, such as lack of corresponding automatic tool changing device, complicated operation and low tool changing efficiency, and proposes an automatic tool changing device for a large-scale high-speed gantry machining center.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An automatic tool changing device for a large high-speed gantry machining center comprises a gantry frame and a cutting motor arranged in the gantry frame, wherein a connecting shaft is arranged on the output end of the cutting motor, and further comprises:

[0007] A milling cutter body is provided at the bottom end of the connecting shaft for processing, a milling cutter clamp is provided between the milling cutter body and the connecting shaft, and the milling cutter clamp is used to fix the milling cutter body on the connecting shaft;

[0008] Wherein, a placing rack is provided on one side of the gantry frame body, a connecting block is rotatably provided on the top of the placing rack, fixed blocks are fixed at both ends of the connecting block, lifting blocks are slidably provided in the two fixed blocks, and a set of twisting components are provided in the two lifting blocks, wherein one set of the twisting components is used to remove the milling cutter clamp and the milling cutter body from the connecting shaft, and the other set of the twisting components is used to install a new milling cutter clamp and the milling cutter body onto the connecting shaft after disassembly;

[0009] A bottom block is fixed at the bottom end of the two lifting blocks, and a group of positioning components are arranged in the two bottom blocks, and the positioning components are used to pre-position the milling cutter body to be disassembled or installed;

[0010] The rotating assembly is arranged between the placement frame and the connecting block and is used for adjusting the positions of the two fixed blocks.

[0011] In a possible design, the twisting assembly includes a first groove opened in the lifting block, a swivel rotates in the first groove, a top ring is fixed in the swivel, two connecting rods are fixed to the surface of the milling cutter clamp, the two connecting rods are arranged on the upper side of the top ring, two driving plates are fixed in the swivel, the two driving plates are respectively in compression contact with the two connecting rods, a driven gear is fixed on the surface of the swivel, a rotating shaft rotates in the first groove, a driving gear meshing with the driven gear is fixed on the surface of the rotating shaft, a second driving motor is fixed to the top of the lifting block, and the second driving motor is fixedly connected to the rotating shaft through a coupling.

[0012] In a possible design, the two connecting rods are both in contact with the inner wall of the rotating ring.

[0013] In a possible design, each set of the twisting components further includes two electric push rods fixed in a fixed block, and the lifting block is fixed on output ends of the two electric push rods.

[0014] In a possible design, each group of the positioning components includes two second grooves opened in the bottom block, and clamping blocks are slid in the two second grooves. The ends of the two clamping blocks that are far away from each other are provided with accommodating grooves, and clamping springs are fixed in the two accommodating grooves. The side ends of the two clamping springs are respectively fixed in the two second grooves, and the arc surfaces of the two clamping blocks are in extrusion contact with the surface of the milling cutter body.

[0015] In a possible design, the adjacent ends of the two clamping blocks are both provided with anti-slip pads.

[0016] In a possible design, a fixing block protrudes downward from the bottom end of the milling cutter body.

[0017] In a possible design, a rotating motor is fixed in the placement rack, and the rotating motor is fixedly connected via a coupling and a connecting block.

[0018] In the present application, after a new milling cutter body and milling cutter clamp are placed from the bottom into the fixed block on the side away from the cutting motor, the milling cutter clamp and milling cutter body are not placed in the fixed block on the side close to the cutting motor. When the milling cutter needs to be replaced, the gantry drives the cutting motor, the connecting shaft, the milling cutter body and milling cutter clamp to be replaced to the upper side of the empty fixed block, and the lifting block is driven to rise by starting the electric push rod so that the driving plate and the connecting rod are kept on the same horizontal plane, and then the rising is stopped, and the second driving motor is started to drive the rotating shaft to rotate, the rotating shaft drives the driving gear to rotate, the driving gear rotation drives the driven gear rotation, the driven gear drives the swivel to rotate, and the swivel rotation drives the driving plate to move in a circle. When the driving plate moves in a circle, it will contact the connecting rod and squeeze the connecting rod to move in a circle, and the connecting rod drives the milling cutter clamp to rotate. The outer shell of the milling cutter clamp is a connecting nut. The milling cutter clamp can be removed from the connecting shaft by rotating, and supported by the top ring. The connecting rod makes the milling cutter clamp stably located in the lifting block, and starts the electric push rod to drive the lifting block to reset and descend, and the connecting block is driven to rotate 180° by starting the rotating motor. After the connecting block rotates 180°, the orientation of the two fixed blocks is adjusted so that the lifting block equipped with the new milling cutter body and the milling cutter clamp is sent to the lower side of the connecting shaft, and the lifting block is driven to rise by starting the electric push rod, and the second drive motor is started to drive the rotating shaft to reverse, and the rotating shaft drives the driven gear to reverse through the driving gear, and the driven gear drives the swivel to reverse, and the swivel reverses through the driving plate to re-fix the milling cutter clamp on the surface of the connecting shaft, and the installation of the milling cutter body is completed at the same time. Subsequently, you only need to replace the milling cutter body in the milling cutter clamp and put it back into the lifting block. At the same time, the elasticity of the clamping spring pushes the clamping block to clamp the new milling cutter body to be replaced, so that it will not fall; the protruding milling cutter body can easily pull the milling cutter body out from between the two clamping blocks.

[0019] Beneficial Effects

[0020] In the utility model, the automatic tool changing device for a large-scale high-speed gantry machining center can achieve the effect of quickly tightening or loosening the milling cutter clamp on the surface of the connecting shaft by twisting the assembly;

[0021] In the utility model, the automatic tool changing device of a large-scale high-speed gantry machining center can achieve the effect of positioning the replaced milling cutter body or the milling cutter body to be installed through the positioning component to prevent it from being separated from the milling cutter clamp;

[0022] In the utility model, the rapid and automatic replacement of the milling cutter body is realized, especially by utilizing two groups of screwing components, one group is used to disassemble the old milling cutter, and the other group is used to install the new milling cutter, which significantly improves the tool changing efficiency. Compared with the traditional manual tool changing method, the tool changing time can be reduced by up to more than 50%, thereby improving the overall production efficiency and processing continuity of the machining center. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front perspective view of an automatic tool changing device for a large-scale high-speed gantry machining center proposed by the utility model;

[0024] Figure 2 This is a partial cross-sectional view of an automatic tool changing device for a large-scale high-speed gantry machining center proposed by the utility model;

[0025] Figure 3 This is a first partial stereogram of an automatic tool changing device for a large-scale high-speed gantry machining center proposed by the utility model;

[0026] Figure 4 This is a second partial stereoscopic view of an automatic tool changing device for a large-scale high-speed gantry machining center proposed by the utility model.

[0027] In the figure: 1. gantry frame; 2. placement frame; 3. cutting motor; 4. connecting shaft; 5. fixing block; 6. connecting block; 7. lifting block; 8. second driving motor; 9. first groove; 10. rotating shaft; 11. driving gear; 12. rotating ring; 13. top ring; 14. connecting rod; 15. milling cutter clamp; 16. driven gear; 17. bottom block; 18. second groove; 19. clamping spring; 20. clamping block; 21. receiving groove; 22. milling cutter body; 23. electric push rod; 24. driving plate; 25. rotating motor. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely 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, rather than all of the embodiments.

[0029] Example 1

[0030] Reference Figure 1-Figure 4 A tool changing device comprises a gantry frame 1 and a cutting motor 3 arranged in the gantry frame 1, a connecting shaft 4 is arranged on the output end of the cutting motor 3, and also comprises a milling cutter body 22 arranged at the bottom end of the connecting shaft 4 for processing, a milling cutter clamp 15 is arranged between the milling cutter body 22 and the connecting shaft 4, and the milling cutter clamp 15 is used to fix the milling cutter body 22 on the connecting shaft 4;

[0031] Among them, a placing frame 2 is provided on one side of the gantry frame body 1, and a connecting block 6 is rotatably provided at the top of the placing frame 2. Fixed blocks 5 are fixed at both ends of the connecting block 6, and lifting blocks 7 are slidably provided in the two fixing blocks 5. A set of twisting components are provided in the two lifting blocks 7, one set of twisting components is used to remove the milling cutter clamp 15 and the milling cutter body 22 from the connecting shaft 4, and the other set of twisting components is used to install the new milling cutter clamp 15 and the milling cutter body 22 on the connecting shaft 4 after disassembly; the twisting component includes a first groove 9 opened in the lifting block 7, a rotating ring 12 is rotatably provided in the first groove 9, and a top Ring 13, two connecting rods 14 are fixed on the surface of the milling cutter clamp 15, and the two connecting rods 14 are both fitted with the inner wall of the rotating ring 12. The two connecting rods 14 are both arranged on the upper side of the top ring 13. Two driving plates 24 are fixed in the rotating ring 12, and the two driving plates 24 are respectively pressed and contacted with the two connecting rods 14. A driven gear 16 is fixed on the surface of the rotating ring 12. A rotating shaft 10 rotates in the first groove 9. A driving gear 11 meshing with the driven gear 16 is fixed on the surface of the rotating shaft 10. A second driving motor 8 is fixed on the top of the lifting block 7, and the second driving motor 8 is fixedly connected to the rotating shaft 10 through a coupling; After a new milling cutter body 22 and a milling cutter clamp 15 are placed from the bottom into the fixed block 5 on the side away from the cutting motor 3, the milling cutter clamp 15 and the milling cutter body 22 are placed inside the fixed block 5 on the side close to the cutting motor 3. When the milling cutter needs to be replaced, the gantry drives the cutting motor 3, the connecting shaft 4 and the milling cutter body 22 and the milling cutter clamp 15 to be replaced to the upper side of the empty fixed block 5, and the lifting block 7 is driven to rise by starting the electric push rod 23, so that the driving plate 24 and the connecting rod 14 are kept on the same horizontal plane, and then the lifting is stopped, and the rotating shaft 10 is driven to rotate by starting the second driving motor 8, and the rotating shaft 10 drives the driving The driven gear 11 rotates, the driving gear 11 rotates to drive the driven gear 16 to rotate, the driven gear 16 drives the rotating ring 12 to rotate, the rotating ring 12 rotates to drive the driving plate 24 to move in a circle, the driving plate 24 will contact the connecting rod 14 during the circular motion and squeeze the connecting rod 14 to make a circular motion, the connecting rod 14 drives the milling cutter clamp 15 to rotate, the outer shell of the milling cutter clamp 15 is a connecting nut, the milling cutter clamp 15 can be removed from the connecting shaft 4 by rotating, and the connecting rod 14 is supported by the top ring 13 so that the milling cutter clamp 15 is stably located in the lifting block 7, and the electric push rod 23 is started to drive the lifting block 7 to reset and descend;

[0032] Furthermore, the side ends of the connecting rods 14 are semicircular and fit the inner wall of the rotating ring 12. The two connecting rods 14 can limit the milling cutter clamp 15 from both sides so that it is located at the center and can maintain alignment with the connecting shaft 4.

[0033] The rotating component is arranged between the placement frame 2 and the connecting block 6 to adjust the positions of the two fixed blocks 5; by starting the rotating motor 25, the connecting block 6 is driven to rotate 180°. After the connecting block 6 rotates 180°, the orientation of the two fixed blocks 5 is adjusted so that the lifting block 7 equipped with the new milling cutter body 22 and the milling cutter clamp 15 is sent to the lower side of the connecting shaft 4.

[0034] The present application can be used in large-scale high-speed gantry machining centers, and can also be used in other fields applicable to the present application.

[0035] Example 2

[0036] refer to Figure 1-Figure 4 , improved on the basis of Example 1: an automatic tool changing device for a large-scale high-speed gantry machining center, which is used in the technical field of gantry machining centers, the bottom ends of the two lifting blocks 7 are fixed with bottom blocks 17, and the two bottom blocks 17 are provided with a group of positioning components, and the positioning components are used to pre-position the milling cutter body 22 to be disassembled or installed; each group of positioning components includes a bottom block 17 fixed to the bottom end of the lifting block 7, and two second grooves 18 are provided in the bottom block 17, and clamping blocks 20 are slid in the two second grooves 18, and the ends of the two clamping blocks 20 that are away from each other are provided with accommodating grooves 21, and clamping springs 19 are fixed in the two accommodating grooves 21, and the side ends of the two clamping springs 19 are respectively fixed in the two second grooves 18, and the arc surfaces of the two clamping blocks 20 are in compression contact with the surface of the milling cutter body 22; the bottom end of the milling cutter body 22 protrudes downward from the fixed block 5;

[0037] Subsequently, it is only necessary to replace the milling cutter body 22 in the milling cutter clamp 15 and put it back into the lifting block 7. At the same time, the elasticity of the clamping spring 19 pushes the clamping block 20 to clamp the new milling cutter body 22 to be replaced, so that it will not fall; the protruding milling cutter body 22 can easily pull the milling cutter body 22 out from between the two clamping blocks 20.

[0038] However, as is well known to those skilled in the art, the working principles and wiring methods of the cutting motor 3, the second drive motor 8, the electric push rod 23 and the rotating motor 25 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any optional selections according to their needs or convenience.

[0039] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. An automatic tool changing device for a large-scale high-speed gantry machining center, comprising a gantry frame (1) and a cutting motor (3) arranged in the gantry frame (1), wherein a connecting shaft (4) is arranged on the output end of the cutting motor (3), characterized in that: Also includes: A milling cutter body (22) is provided at the bottom end of the connecting shaft (4) for processing, a milling cutter clamp (15) is provided between the milling cutter body (22) and the connecting shaft (4), and the milling cutter clamp (15) is used to fix the milling cutter body (22) on the connecting shaft (4); Wherein, a placing frame (2) is provided on one side of the gantry frame body (1), a connecting block (6) is rotatably provided at the top end of the placing frame (2), a fixing block (5) is fixed at both ends of the connecting block (6), a lifting block (7) is slidably provided in the two fixing blocks (5), and a set of twisting components is provided in the two lifting blocks (7), wherein one set of the twisting components is used to remove the milling cutter clamp (15) and the milling cutter body (22) from the connecting shaft (4), and the other set of the twisting components is used to install a new milling cutter clamp (15) and the milling cutter body (22) on the connecting shaft (4) after removal; A bottom block (17) is fixed to the bottom ends of the two lifting blocks (7), and a group of positioning components are arranged in the two bottom blocks (17), and the positioning components are used to pre-position the milling cutter body (22); A rotating assembly is arranged between the placement frame (2) and the connecting block (6) and is used to adjust the positions of the two fixed blocks (5).

2. The automatic tool changing device for a large-scale high-speed gantry machining center according to claim 1 is characterized in that: The screwing assembly comprises a first groove (9) provided in the lifting block (7), a rotating ring (12) rotating in the first groove (9), a top ring (13) fixed in the rotating ring (12), two connecting rods (14) fixed on the surface of the milling cutter clamp (15), the two connecting rods (14) being arranged on the upper side of the top ring (13), two driving plates (24) fixed in the rotating ring (12), the two driving plates (24) respectively being in compression contact with the two connecting rods (14), a driven gear (16) fixed on the surface of the rotating ring (12), a rotating shaft (10) rotating in the first groove (9), a driving gear (11) meshing with the driven gear (16) fixed on the surface of the rotating shaft (10), a second driving motor (8) fixed on the top end of the lifting block (7), the second driving motor (8) being fixedly connected to the rotating shaft (10) via a coupling.

3. The automatic tool changing device for a large-scale high-speed gantry machining center according to claim 2 is characterized in that: The two connecting rods (14) are both in contact with the inner wall of the rotating ring (12).

4. The automatic tool changing device for a large-scale high-speed gantry machining center according to claim 2 is characterized in that: Each set of the twisting components also includes two electric push rods (23) fixed in the fixed block (5), and the lifting block (7) is fixed on the output ends of the two electric push rods (23).

5. The automatic tool changing device for a large-scale high-speed gantry machining center according to claim 2, characterized in that: Each group of the positioning components comprises two second grooves (18) provided in the bottom block (17), a clamping block (20) slidingly provided in each of the two second grooves (18), a receiving groove (21) provided at the ends of the two clamping blocks (20) which are away from each other, a clamping spring (19) fixed in each of the two receiving grooves (21), the side ends of the two clamping springs (19) being respectively fixed in the two second grooves (18), and the arcuate surfaces of the two clamping blocks (20) being in compression contact with the surface of the milling cutter body (22).

6. The automatic tool changing device for a large-scale high-speed gantry machining center according to claim 5, characterized in that: A fixing block (5) protrudes downward from the bottom end of the milling cutter body (22).

7. The automatic tool changing device for a large-scale high-speed gantry machining center according to claim 5, characterized in that: The adjacent ends of the two clamping blocks (20) are both provided with anti-slip pads.

8. An automatic tool changing device for a large-scale high-speed gantry machining center according to any one of claims 1 to 3, characterized in that: A rotating motor (25) is fixed inside the placement rack (2), and the rotating motor (25) is fixedly connected to a connecting block (6) via a coupling.

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