A cradle-type five-axis machining center

Abstract

The utility model discloses a cradle-type five-axis machining center, including a mounting seat, a moving mechanism, a spindle device, a transmission mechanism and a support block; the mounting seat includes a base and side seats arranged on both sides of the base; the moving mechanism is used to move the spindle device; the rotating mechanism includes a first rotating member, a cradle member, a second rotating member and a fixed disk, the cradle member is arranged between the side seats, and the first rotating member drives and connects the cradle member; the fixed disk is arranged in the middle of the cradle member, and the second rotating member drives and connects the fixed disk; the support block is arranged in the middle of the base, a groove is opened in the middle of the support block, the bottom of the cradle member is arranged in the groove, a slide rail is arranged on the base, a slider is arranged at the bottom of the support block, and a linkage assembly is arranged between the first rotating member and the support block. A cradle-type five-axis machining center of the utility model is provided with a movable support block, which can provide support when the cradle member swings greatly, and reduce the influence of friction on the swing accuracy of the cradle member.

Description

Technical Field

[0001] The utility model relates to the field of machine tool processing equipment, in particular to a cradle-type five-axis processing center. Background Art

[0002] A cradle-type five-axis machining center generally includes movement of the XYZ axes, rotation of the cradle structure, and rotation of the fixed plate that fixes the workpiece. In order to solve the problem that when processing heavier workpieces, the cradle structure has an excessively large turning angle, resulting in excessive overturning torque, which affects the accuracy and stability of the workpiece, the prior art adds a supporting structure at the bottom of the cradle structure. However, the supporting structure always contacts the bottom of the cradle. The cradle structure will be affected by the friction of the supporting structure when swinging. When the turning angle is small and no support is needed, it is easy to affect the swinging accuracy of the cradle structure, which still affects the machining accuracy of the workpiece. Utility Model Content

[0003] In view of the above problems, the utility model provides a cradle-type five-axis machining center, which is provided with a movable support block, which can provide support when the cradle part swings greatly, thereby reducing the influence of friction on the swing accuracy of the cradle part.

[0004] The technical solution of the utility model is as follows:

[0005] A cradle-type five-axis machining center, comprising:

[0006] The mounting seat comprises a base and side seats arranged on both sides of the base;

[0007] The moving mechanism comprises an X-axis moving part, a Y-axis moving part and a Z-axis moving part, wherein the X-axis moving part is arranged on the top of the side seat, the Y-axis moving part is arranged on the X-axis moving part, and the Z-axis moving part is arranged on the Y-axis moving part;

[0008] A spindle device is arranged on the Z-axis moving part;

[0009] The rotating mechanism comprises a first rotating member, a cradle member, a second rotating member and a fixed plate, wherein the cradle member is arranged between the side seats, and the first rotating member is driven to connect with the cradle member to realize the swing of the cradle member; the fixed plate is arranged in the middle of the cradle member, and the second rotating member is driven to connect with the fixed plate;

[0010] A support block is arranged in the middle of the base, a groove is opened in the middle of the support block, the bottom of the cradle member is arranged in the groove, and when the cradle member is horizontal, there is a movable gap between the cradle member and the groove, a slide rail is arranged on the base parallel to the side seat, a slider matching the slide rail is arranged at the bottom of the support block, a linkage component is arranged between the first rotating member and the support block, the bottom side motion trajectory of the cradle member coincides with the two edges of the groove corresponding to the moving direction of the support block, and when the cradle member rotates 90 degrees in any direction, the top surface of the support block just fits the side wall of the mounting block.

[0011] In a further technical solution, the first rotating member includes a first motor and a first rotating shaft, the second rotating member includes a second motor and a second rotating shaft, the cradle member includes a mounting block and connecting blocks arranged at the top of both sides of the mounting block, the first rotating shaft includes two, which are horizontally arranged on the outside of the connecting block and rotatably connected to the side seat, the first motor is arranged in one of the side seats and connected to the corresponding first rotating shaft; the second rotating shaft is vertically arranged in the middle of the mounting block, the second motor is arranged in the mounting block, driving and connecting the second rotating shaft, and the middle of the fixed plate is connected to the top of the second rotating shaft.

[0012] In a further technical solution, the linkage assembly includes a gear and a rack that mesh with each other, the gear is sleeved on the outside of the first rotating shaft, and the rack is horizontally arranged on the outside of the support block.

[0013] In a further technical solution, oblique grooves are respectively provided at the two edges of the groove corresponding to the moving direction of the support block, a spring is provided in the oblique groove, and an extrusion block is provided at the end of the spring.

[0014] In a further technical solution, the top surface of the extrusion block is an arc-shaped surface.

[0015] In a further technical solution, a first chip discharge opening is provided in the middle of the base, and a second chip discharge opening communicating with the groove is provided in the middle of the bottom of the support block.

[0016] In a further technical solution, a conveyor belt is provided at the bottom of the mounting seat.

[0017] The beneficial effects of the utility model are:

[0018] 1. The workpiece to be processed can be fixed by a fixed plate, and the spindle device for processing the workpiece can be moved in three directions of XYZ through a moving mechanism. The first rotating member can change the angle of the cradle member, thereby changing the angle of the workpiece on the fixed plate. Since there is a movable gap between the cradle member and the groove of the support block, the cradle member does not contact the support block when the swing angle is small. Therefore, the cradle member will not be affected by the friction of the supporting structure when it swings at a small amplitude. When the angle of the cradle member changes, due to the action of the linkage component, the support block moves along the slide rail. As the swing angle of the cradle member increases, the support block gradually fits the cradle member to provide support. Therefore, it can provide support when the cradle member swings more, and reduce the influence of friction on the swing accuracy of the cradle member.

[0019] 2. When the swing angle of the cradle increases, it can contact the extrusion block. When the cradle gradually contacts the edge of the groove, the spring can be compressed to move the extrusion block, thus avoiding damage to the equipment due to excessive extrusion force.

[0020] 3. The first chip discharge opening on the base and the second chip discharge opening in the groove of the support block can discharge the waste chips generated in the groove due to processing, and drop them onto the conveyor belt and transport them to the designated location for centralized recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view schematic diagram of a cradle-type five-axis machining center according to an embodiment of the utility model;

[0022] Figure 2 It is a side cross-sectional schematic diagram of a cradle-type five-axis machining center excluding the moving mechanism described in an embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 11. Base; 12. Side seat; 13. Slide rail; 14. First chip removal port; 21. X-axis moving part; 22. Y-axis moving part; 23. Z-axis moving part; 30. Spindle device; 41. First rotating shaft; 42. Second rotating shaft; 43. Mounting block; 44. Connecting block; 45. Fixed plate; 46. Gear; 50. Support block; 51. Rack; 52. Spring; 53. Extrusion block; 54. Second chip removal port; 60. Conveyor belt. DETAILED DESCRIPTION

[0025] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

[0026] Example:

[0027] like Figure 1-Figure 2As shown, a cradle-type five-axis machining center includes a mounting seat, a moving mechanism, a spindle device 30, a rotating mechanism and a support block 50; the mounting seat includes a base 11 and side seats 12 arranged on both sides of the base 11, and the height of the side seats 12 is greater than the base 11, so that the rotating mechanism can be installed between the two side seats 12; the moving mechanism can realize the movement of the spindle device 30 in three directions, front and back, left and right, and up and down, and any translation mechanism in the existing five-axis machining center can be selected, including an X-axis moving part 21, a Y-axis moving part 22 and a Z-axis moving part 23, and the X-axis moving part 21 is arranged on the side The Y-axis moving member 22 is arranged on the top of the seat 12, and the Z-axis moving member 23 is arranged on the Y-axis moving member 22; the spindle device 30 is an existing structure, which is used to install different tools to process the workpiece and is arranged on the Z-axis moving member 23; the rotating mechanism includes a first rotating member, a cradle member, a second rotating member and a fixed plate 45, the cradle member is arranged between the side seats 12, and includes a mounting block 43 and a connecting block 44 arranged on the top of both sides of the mounting block 43, the first rotating member includes a first motor and two first rotating shafts 41, and the two first rotating shafts 41 are respectively arranged horizontally on the connecting block 4 4 and is rotatably connected to the side seat 12, the first motor is arranged in one of the side seats 12 and is connected to the corresponding first rotating shaft 41; the second rotating member includes a second motor and a second rotating shaft 42, the second rotating shaft 42 is vertically arranged in the middle of the mounting block 43, the second motor is arranged in the mounting block 43, and is drivingly connected to the second rotating shaft 42, and the middle of the fixing plate 45 is connected to the top of the second rotating shaft 42; the supporting block 50 is arranged in the middle of the base 11, and a groove is opened in the middle of the supporting block 50, the bottom of the mounting block 43 is arranged in the groove, and when the mounting block 43 is horizontal, there is a movable space between the mounting block 43 and the groove. A slide rail 13 is provided on the base 11 parallel to the side seat 12, a slider matching the slide rail 13 is provided at the bottom of the support block 50, a linkage assembly is provided between the first rotating shaft 41 and the support block 50, the linkage assembly includes a gear 46 and a rack 51 meshing with each other, the gear 46 is sleeved on the outside of the first rotating shaft 41, and the rack 51 is horizontally arranged on the outside of the support block 50; the bottom side motion trajectory of the mounting block 43 coincides with the two edges of the groove corresponding to the moving direction of the support block 50, and when the mounting block 43 is rotated 90 degrees in any direction, the top surface of the support block 50 just fits the side wall of the mounting block 43.

[0028] The working principle of the above technical solution is as follows:

[0029] When processing a workpiece, first fix the workpiece on the fixed plate 45, move the spindle device 30 to the processing position through the moving mechanism, and at the same time, the first motor drives the cradle to swing until the workpiece is at the angle required for processing. During the swinging process, the gear 46 on the outside of the first rotating shaft 41 meshes with the rack 51 on the outside of the support block 50, so that the support block 50 moves along the slide rail 13, so that the edge of the groove is close to the mounting block 43. When the swing angle of the cradle is too large and needs support, the edge of the groove moves to the position of fitting the mounting block 43 to support the mounting block 43, so as to avoid affecting the processing accuracy due to excessive overturning torque. Due to the meshing of the wheel 46 and the rack 51, and the braking of the first motor itself, the position of the support block 50 remains unchanged during processing; when the workpiece needs to be rotated for processing, the fixed plate 45 can be driven to rotate by the second motor; since the connecting block 44 is connected to the first rotating shaft 41 and is at the top of the mounting block 43, the height of the mounting block 43 can gradually increase when the first rotating shaft 41 rotates, and when the support block 50 is moved, the mounting block 43 can change from a state of fitting to the inner wall of the groove to a state of contacting the top side of the groove, that is, the top surface of the support block 50. This process is always supported by the support block 50, ensuring the stability of the cradle when the swing angle is large and the friction resistance is small.

[0030] In another embodiment, if Figure 2 As shown, the groove is provided with oblique grooves at the two edges corresponding to the moving direction of the support block 50, and a spring 52 is provided in the oblique groove. The end of the spring 52 is provided with an extrusion block 53. The top surface of the extrusion block 53 can be an arc surface, and the contact with the extrusion block 53 is smoothly transitioned when the mounting block 43 rotates. When the spring 52 is naturally stretched, the extrusion block 53 is partially outside the oblique groove, and can contact the cradle part in advance to play a supporting role, and squeeze the spring 52 during the process of increasing the swing angle of the cradle part, and the supporting force gradually increases; in addition, the extrusion block 53 is in an active state when squeezed, and can shrink into the oblique groove when squeezed, so as to avoid excessive squeezing force and damage to the equipment.

[0031] In another embodiment, if Figure 2 As shown, a first chip discharge opening 14 is provided in the middle of the base 11, a second chip discharge opening 54 connected to the groove is provided in the middle of the bottom of the support block 50, and a conveyor belt 60 is provided at the bottom of the mounting seat. The first chip discharge opening 14 on the base 11 and the second chip discharge opening 54 in the groove of the support block 50 can discharge the waste chips generated in the groove due to processing, and the waste chips fall onto the conveyor belt 60 and are transported to a designated location for centralized recycling, so as to prevent the waste chips from affecting the swing of the cradle and the processing of the workpiece.

[0032] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A cradle-type five-axis machining center, characterized in that: include: The mounting seat comprises a base and side seats arranged on both sides of the base; The moving mechanism comprises an X-axis moving part, a Y-axis moving part and a Z-axis moving part, wherein the X-axis moving part is arranged on the top of the side seat, the Y-axis moving part is arranged on the X-axis moving part, and the Z-axis moving part is arranged on the Y-axis moving part; A spindle device is arranged on the Z-axis moving part; The rotating mechanism comprises a first rotating member, a cradle member, a second rotating member and a fixed plate, wherein the cradle member is arranged between the side seats, and the first rotating member is driven to connect with the cradle member to realize the swing of the cradle member; the fixed plate is arranged in the middle of the cradle member, and the second rotating member is driven to connect with the fixed plate; A support block is arranged in the middle of the base, a groove is opened in the middle of the support block, the bottom of the cradle member is arranged in the groove, and when the cradle member is horizontal, there is a movable gap between the cradle member and the groove, a slide rail is arranged on the base parallel to the side seat, a slider matching the slide rail is arranged at the bottom of the support block, a linkage component is arranged between the first rotating member and the support block, the bottom side motion trajectory of the cradle member coincides with the two edges of the groove corresponding to the moving direction of the support block, and when the cradle member rotates 90 degrees in any direction, the top surface of the support block just fits the side wall of the mounting block.

2. The cradle-type five-axis machining center according to claim 1, characterized in that: The first rotating member includes a first motor and a first rotating shaft, the second rotating member includes a second motor and a second rotating shaft, the cradle member includes a mounting block and connecting blocks arranged at the top of both sides of the mounting block, the first rotating shaft includes two, which are horizontally arranged on the outside of the connecting block and rotatably connected to the side seats, the first motor is arranged in one of the side seats and connected to the corresponding first rotating shaft; the second rotating shaft is vertically arranged in the middle of the mounting block, the second motor is arranged in the mounting block, driving and connecting the second rotating shaft, and the middle of the fixed plate is connected to the top of the second rotating shaft.

3. The cradle-type five-axis machining center according to claim 2, characterized in that: The linkage assembly comprises a gear and a rack meshing with each other, the gear is sleeved on the outside of the first rotating shaft, and the rack is horizontally arranged on the outside of the supporting block.

4. The cradle-type five-axis machining center according to claim 1, characterized in that: The groove is provided with oblique grooves at two edges corresponding to the moving direction of the support block, a spring is provided in the oblique groove, and an extrusion block is provided at the end of the spring.

5. The cradle-type five-axis machining center according to claim 4, characterized in that: The top surface of the extrusion block is an arc-shaped surface.

6. The cradle-type five-axis machining center according to claim 1, characterized in that: A first chip discharge opening is provided in the middle of the base, and a second chip discharge opening communicating with the groove is provided in the middle of the bottom of the support block.

7. The cradle-type five-axis machining center according to claim 6, characterized in that: A conveyor belt is provided at the bottom of the mounting seat.

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