Center hole grinding device for production lines

Abstract

This utility model discloses a center hole grinding device for an assembly line. The device includes a drill bit for grinding the center hole of a workpiece, a drilling machine for driving the drill bit to rotate, a moving drive for driving the drilling machine to move, grippers for gripping the workpiece, a gripping drive for driving the grippers, a floating seat that automatically adapts to the drill bit's position, and a lifter for driving the floating seat to rise and fall. The drilling machine is mounted on the moving drive, the drill bit is mounted on the drilling machine, there are two grippers mounted on the gripping drive, the gripping drive drives the two grippers to move towards or in opposite directions, the gripping drive is mounted on the floating seat, and the floating seat is mounted on the lifter. This assembly line center hole grinding device can grip workpieces on the assembly line and grind their center holes, then return them to the assembly line after grinding.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle drive shaft processing technology, and in particular to a center hole grinding device for an assembly line. Background Technology

[0002] After the shaft hole of the motorcycle driveshaft is machined, it needs to be ground to ensure that the two ends of the shaft hole form a guiding structure for easy positioning in subsequent processes. After grinding, the burrs inside the shaft hole need to be removed, so a drill bit is needed to remove the burrs from the inner hole. After the burrs are removed, the shaft hole needs to be cleaned to ensure that the removed burrs and residual debris inside the shaft hole are removed. After cleaning, it is dried, and finally, a sealing test is performed. From grinding to burr removal, from burr removal to cleaning and drying, and from cleaning and drying to sealing test, all processes are carried out through a collection box. The driveshaft needs to be manually moved between processes, which is time-consuming and labor-intensive. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a center hole grinding device for a production line that can grind the center hole of the drive shaft on the production line.

[0004] To solve the above problems, this utility model provides a center hole grinding device for an assembly line. The center hole grinding device for an assembly line includes a drill bit for grinding the center hole of a workpiece, a drilling machine for driving the drill bit to rotate, a moving drive for driving the drilling machine to move, grippers for gripping the workpiece, a gripping drive for driving the grippers, a floating seat that automatically adapts to the position of the drill bit, and a lifter for driving the floating seat to rise and fall. The drilling machine is mounted on the moving drive, the drill bit is mounted on the drilling machine, there are two grippers, the two grippers are mounted on the gripping drive, the gripping drive drives the two grippers to move towards or in opposite directions, the gripping drive is mounted on the floating seat, and the floating seat is mounted on the lifter.

[0005] Furthermore, the floating seat includes an upper connecting seat for connection with the lifting device, a lower connecting seat for connection with the gripping driver, a vertical guide rod for guiding the vertical movement of the lower connecting seat, and a vertical return spring for resetting. The lower end of the vertical guide rod is mounted on the lower connecting seat, the upper end of the vertical guide rod passes through the upper connecting seat, the vertical return spring is sleeved on the vertical guide rod, and an anti-detachment cap is provided on the upper part of the vertical guide rod. The vertical return spring is located between the anti-detachment cap and the upper connecting seat.

[0006] Furthermore, the floating seat includes a sliding connecting seat for connection with the lifting device, a lower connecting seat for connection with the gripping driver, a transverse guide rod for guiding the transverse movement of the lower connecting seat, and an axial return spring for resetting the lower connecting seat. The sliding connecting seat has a mounting groove, the transverse guide rod is mounted on the two side walls of the mounting groove, the lower connecting seat is slidably disposed on the transverse guide rod, and the axial return spring is sleeved on the transverse guide rod. The axial return spring is located between the lower connecting seat and the side wall of the mounting groove, and axial return springs are provided on both sides of the lower connecting seat.

[0007] Furthermore, the lower connecting seat includes a top plate and two side plates, with two side plates mounted on both sides of the top plate. The top plate and the side plates together form a mounting groove, and the two ends of the transverse guide rod are mounted on the side plates.

[0008] Furthermore, a guide sleeve is provided on the lower connecting seat, and the transverse guide rod slides within the guide sleeve.

[0009] Furthermore, the floating seat includes an upper connecting seat for connection with the lifting device, a lower connecting seat for connection with the gripping driver, a sliding connecting seat for connecting the lower connecting seat and the lower connecting seat, a vertical guide rod for guiding the vertical movement of the sliding connecting seat, a horizontal guide rod for guiding the lateral movement of the lower connecting seat, a vertical return spring for resetting the sliding connecting seat, and an axial return spring for resetting the lower connecting seat. The sliding connecting seat has a mounting groove, the horizontal guide rod is mounted on the two side walls of the mounting groove, the lower connecting seat is slidably mounted on the horizontal guide rod, the axial return spring is sleeved on the horizontal guide rod, the axial return spring is located between the lower connecting seat and the side wall of the mounting groove, and axial return springs are provided on both sides of the lower connecting seat. The lower end of the vertical guide rod is mounted on the top surface of the sliding connecting seat, the upper end of the vertical guide rod passes through the upper connecting seat, an anti-detachment cap is provided on the upper part of the vertical guide rod, the vertical return spring is sleeved on the vertical guide rod, and the vertical return spring is located between the anti-detachment cap and the upper connecting seat.

[0010] Furthermore, the sliding connecting seat includes a top plate and side plates, and there are two side plates. Two side plates are installed on both sides of the top plate. The top plate and side plates enclose and form a mounting groove. The two ends of the transverse guide rod are installed on the side plates.

[0011] Furthermore, a guide sleeve is provided on the upper connecting seat, and the vertical guide rod is slidably disposed within the guide sleeve.

[0012] Furthermore, the gripper is provided with a positioning slot.

[0013] Furthermore, it also includes a frame, on which the lifter and the motion drive are mounted.

[0014] This utility model relates to a center hole grinding device for an assembly line. A lifting device drives a floating seat downwards, which in turn moves the grippers and gripping driver mounted on the floating seat downwards. After reaching a predetermined position, the gripping driver drives the grippers to grip the transmission shaft. Then, the lifting device resets, causing the transmission shaft to move upwards and align with the drill bit. The moving driver then moves the drilling machine, allowing the drill bit to grind the center hole of the transmission shaft. After grinding, the moving driver resets the drilling machine. After resetting, the lifting device descends again, lowering the transmission shaft on the grippers onto the assembly line. Finally, the gripping driver drives the grippers to release the transmission shaft, completing the grinding of the center hole of the transmission shaft on the assembly line. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a preferred embodiment of the center hole grinding device for an assembly line according to the present invention.

[0016] Figure 2 This is a side view of the center hole grinding device for an assembly line according to this utility model.

[0017] Figure 3 This is a schematic diagram of the floating seat structure.

[0018] Figure 4 This is a schematic diagram of the gripper structure.

[0019] Figure 5 This is a schematic diagram of another embodiment of the floating seat.

[0020] Figure 6 This is a schematic diagram of another embodiment of the floating seat.

[0021] The meanings of the labels in the attached diagram are as follows:

[0022] Frame 1, Drill bit 2, Drilling rig 3, Moving drive 4, Gripper 5, Positioning slot 51, Gripping drive 6, Floating seat 7, Upper connecting seat 71, Lower connecting seat 72, Sliding connecting seat 73, Mounting slot 730, Top plate 731, Side plate 732, Vertical guide rod 74, Horizontal guide rod 75, Vertical return spring 76, Axial return spring 77, Anti-dislodgement cap 78, Guide sleeve 79, Lifter 8, Drive shaft 91, Production line 92. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Example 1

[0025] like Figure 1 and Figure 2As shown, a preferred embodiment of the center hole grinding device for a production line of this utility model includes a frame 1, a drill bit 2, a drilling machine 3, a moving drive 4, grippers 5, a grasping drive 6, a floating seat 7, and a lifting device 8. The lifting device 8 and the moving drive 4 are both mounted on the frame 1. The lifting device 8 is located above the production line, and the moving drive 4 is located on the side of the production line. The drill bit 2 is mounted on the drilling machine 3 and is used to grind the center hole of the drive shaft 9. The drilling machine 3 drives the drill bit 2 to rotate and achieve center hole rotation. The drilling machine 3 is mounted on the moving drive 4 and is used to drive the drilling machine 3 to move, simultaneously moving the drill bit 2 to achieve drill bit advance and retraction. The moving drive 4 is typically an electric slide or an electric cylinder. There are two grippers 5, mounted on the grasping drive 6. The grippers 5 are used to grasp the drive shaft 9. The grasping drive 6 drives the two grippers 5 to move towards or away from each other, thereby allowing the grippers 5 to grasp or release the drive shaft 9. The gripping driver 6 is mounted on the floating seat 7, which automatically adapts to the position of the drill bit 2, ensuring that the grinding position is on the axis of the drive shaft 9. The floating seat 7 is mounted on the lifting device 8, which drives the floating seat 7 to rise and fall, thereby driving the gripping driver 6 and the gripper 5 to rise and fall. The lifting device 8 is usually a pneumatic cylinder, but in other embodiments, a hydraulic cylinder or an electric cylinder can also be used. When it is necessary to grip the drive shaft 9, the lifting device 8 descends, causing the gripper 5 to descend. After descending to the predetermined position, the gripping driver 6 drives the gripper 5 to move towards each other, thereby gripping the drive shaft 9 on the production line.

[0026] like Figure 3As shown, the floating seat 7 includes an upper connecting seat 71, a lower connecting seat 72, a sliding connecting seat 73, a vertical guide rod 74, a horizontal guide rod 75, a vertical return spring 76, and an axial return spring 77. The upper connecting seat 71 is connected to the lifting device 8. There are four vertical guide rods 74. The lower end of each vertical guide rod 74 is installed on the top surface of the sliding connecting seat 73. The four vertical guide rods 74 are located at the four corners of the sliding connecting seat 73. The upper end of each vertical guide rod 74 passes through the upper connecting seat 71. In this way, the vertical guide rods 74 can guide the sliding connecting seat 73 to move vertically. Each vertical guide rod 74 is provided with an anti-detachment cap 78. Each vertical guide rod 74 is fitted with a vertical return spring 76. The vertical return spring 76 is located between the anti-detachment cap 78 and the upper connecting seat 71. When an external force pulls the sliding connecting seat 73 downward, the sliding connecting seat 73 moves downward and compresses the vertical return spring 76. After the external force disappears, the sliding connecting seat 73 returns to its original position under the action of the vertical return spring 76. When an external force pushes the sliding connecting seat 73 upward, the sliding connecting seat 73 moves upward. After the external force disappears, the sliding connecting seat 73 returns to its original position under the action of gravity. The transverse guide rod 75 is mounted on the sliding connecting seat 73. The axial direction of the transverse guide rod 75 is parallel to the axial direction of the transmission shaft 9. There are two transverse guide rods 75. The lower connecting seat 72 is slidably mounted on the two transverse guide rods 75. The lower connecting seat 72 can slide along the transverse guide rods 75. Two axial return springs 77 are sleeved on each transverse guide rod. The two axial return springs 77 on each guide rod are located on both sides of the lower connecting seat 72, so that the two ends of each axial return spring 77 are connected to the lower connecting seat 72 and the sliding connecting seat 73 respectively. In this way, when an axial external force is removed from the lower connecting seat 72, the axial return spring 77 drives the lower connecting seat 72 to return to its original position.

[0027] The sliding connecting seat 73 has a mounting groove 730. The transverse guide rod 75 is mounted on both side walls of the mounting groove 730. The axial return spring 77 is located between the lower connecting seat 72 and the side walls of the mounting groove 730. Specifically, the sliding connecting seat 73 includes a top plate 731 and two side plates 732. The two side plates 732 are mounted on both sides of the top plate 731. The top plate 731 and the side plates 732 enclose to form the mounting groove 730. The two ends of the transverse guide rod 75 are mounted on the side plates 732. Guide sleeves 79 are provided on both the lower connecting seat 72 and the upper connecting seat 71. The transverse guide rod 75 and the vertical guide rod 74 slide within the corresponding guide sleeves 79, which facilitates more stable guidance of the transverse guide rod 75 and the vertical guide rod 74.

[0028] like Figure 4As shown, the gripper 5 is provided with a positioning slot 51, which is V-shaped. Of course, in other embodiments, the positioning slot 51 can also be C-shaped. The positioning slot 51 is used to position the drive shaft 9 and prevent the drive shaft 9 from falling off the gripper 5.

[0029] In use, the lifting device 8 drives the floating seat 7 to move downward, which in turn drives the gripper 5 and the gripping driver 6 on the floating seat 7 to move downward. After moving to the predetermined position, the gripping driver 6 drives the gripper 5 to grip the transmission shaft 9. Then, the lifting device 8 resets and drives the transmission shaft 9 to move upward and align with the drill bit 2. Then, the moving driver 4 drives the drilling machine 3 to move, so that the drill bit 2 grinds the center hole of the transmission shaft 9. After grinding is completed, the moving driver 4 drives the drilling machine 3 to reset. After resetting, the lifting device 8 descends again to lower the transmission shaft 9 on the gripper 5 to the production line. Then, the gripping driver 6 drives the gripper 5 to release the transmission shaft 9, completing the grinding of the center hole of the transmission shaft 9 on the production line. The upper connecting seat 71 and the sliding connecting seat 73 are slidably connected by the vertical guide rod 74. In this way, even if the drill bit 2 and the drive shaft 9 deviate in the vertical direction, the drive shaft 9 can automatically adapt to the position of the drill bit 2, ensuring that the drill bit 2 can always be aligned with the axis of the drive shaft 9, thus guaranteeing the grinding accuracy. Furthermore, the lower connecting seat 72 is slidably mounted on the horizontal guide rod 75. In this way, even if the drive shaft 9 deviates axially on the production line, it can automatically center itself under the push of the drill bit 2, ensuring that both ends of the drive shaft 9 can be ground to the same depth, thus improving the grinding accuracy.

[0030] Example 2

[0031] like Figure 5 As shown, the difference between this embodiment and Embodiment 1 lies in the structure of the floating seat 7.

[0032] The floating seat 7 includes an upper connecting seat 71 for connection to the lifting device 8, a lower connecting seat 72 for connection to the gripping driver 6, a vertical guide rod 74 for guiding the vertical movement of the lower connecting seat 72, and a vertical return spring 76 for resetting. The lower end of the vertical guide rod 74 is mounted on the lower connecting seat 72, and the upper end of the vertical guide rod 74 passes through the upper connecting seat 71. The vertical return spring 76 is sleeved on the vertical guide rod 74, and an anti-dislodgement cap 78 is provided on the upper part of the vertical guide rod 74. The vertical return spring 76 is located between the anti-dislodgement cap 78 and the upper connecting seat 71. In this embodiment, the floating seat 7 can automatically adapt to the height difference between the drill bit 2 and the drive shaft 9, keeping them on the same axis and improving grinding accuracy.

[0033] Example 3

[0034] like Figure 6 As shown, the difference between this embodiment and Embodiment 1 lies in the structure of the floating seat 7.

[0035] The floating seat 7 includes a sliding connecting seat 73 for connection with the lifting device 8, a lower connecting seat 72 for connection with the gripping driver 6, a transverse guide rod 75 for guiding the transverse movement of the lower connecting seat 72, and an axial return spring 77 for resetting the lower connecting seat 72. The sliding connecting seat 73 has a mounting groove 730. The transverse guide rod 75 is mounted on both side walls of the mounting groove 730. The lower connecting seat 72 is slidably disposed on the transverse guide rod 75. The axial return spring 77 is sleeved on the transverse guide rod 75 and is located between the lower connecting seat 72 and the side walls of the mounting groove 730. Axial return springs 77 are provided on both sides of the lower connecting seat 72. The sliding connecting seat 73 has the same structure as the sliding connecting seat 73 in Embodiment 1, and will not be described again here. The floating seat 7 in this embodiment can automatically center itself, ensuring that both ends of the drive shaft 9 can be ground to the same depth, thus improving the grinding accuracy.

[0036] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structure made using the contents of this utility model specification and drawings, whether directly or indirectly applied to other related technical fields, shall also be within the patent protection scope of this utility model.

Claims

1. A center hole grinding device for an assembly line, characterized in that: The device includes a drill bit for grinding a center hole in a workpiece, a drilling machine for driving the drill bit to rotate, a motion drive for driving the drilling machine to move, grippers for gripping the workpiece, a gripping drive for driving the grippers, a floating seat that automatically adapts to the position of the drill bit, and a lifter for driving the floating seat to rise and fall. The drilling machine is mounted on the motion drive, the drill bit is mounted on the drilling machine, there are two grippers, the two grippers are mounted on the gripping drive, the gripping drive drives the two grippers to move towards or in opposite directions, the gripping drive is mounted on the floating seat, and the floating seat is mounted on the lifter.

2. The center hole grinding device for an assembly line as described in claim 1, characterized in that: The floating seat includes an upper connecting seat for connection with the lifting device, a lower connecting seat for connection with the gripping driver, a vertical guide rod for guiding the vertical movement of the lower connecting seat, and a vertical return spring for resetting. The lower end of the vertical guide rod is mounted on the lower connecting seat, and the upper end of the vertical guide rod passes through the upper connecting seat. The vertical return spring is sleeved on the vertical guide rod, and an anti-detachment cap is provided on the upper part of the vertical guide rod. The vertical return spring is located between the anti-detachment cap and the upper connecting seat.

3. The center hole grinding device for an assembly line as described in claim 1, characterized in that: The floating seat includes a sliding connecting seat for connection with the lifting device, a lower connecting seat for connection with the gripping driver, a transverse guide rod for guiding the transverse movement of the lower connecting seat, and an axial return spring for resetting the lower connecting seat. The sliding connecting seat has a mounting groove, the transverse guide rod is mounted on the two side walls of the mounting groove, the lower connecting seat is slidably mounted on the transverse guide rod, and the axial return spring is sleeved on the transverse guide rod. The axial return spring is located between the lower connecting seat and the side wall of the mounting groove, and axial return springs are provided on both sides of the lower connecting seat.

4. The center hole grinding device for an assembly line as described in claim 3, characterized in that: The lower connecting seat includes a top plate and two side plates. The two side plates are installed on both sides of the top plate. The top plate and the side plates enclose and form a mounting groove. The two ends of the transverse guide rod are installed on the side plates.

5. The center hole grinding device for an assembly line as described in claim 3, characterized in that: A guide sleeve is provided on the lower connecting seat, and the transverse guide rod slides inside the guide sleeve.

6. The center hole grinding device for an assembly line as described in claim 1, characterized in that: The floating seat includes an upper connecting seat for connection with a lifting device, a lower connecting seat for connection with a gripping driver, a sliding connecting seat for connecting the lower connecting seat and the lower connecting seat, a vertical guide rod for guiding the vertical movement of the sliding connecting seat, a horizontal guide rod for guiding the lateral movement of the lower connecting seat, a vertical return spring for resetting the sliding connecting seat, and an axial return spring for resetting the lower connecting seat. The sliding connecting seat has a mounting groove, the horizontal guide rod is mounted on the two side walls of the mounting groove, the lower connecting seat is slidably mounted on the horizontal guide rod, the axial return spring is sleeved on the horizontal guide rod and located between the lower connecting seat and the side wall of the mounting groove, and axial return springs are provided on both sides of the lower connecting seat. The lower end of the vertical guide rod is mounted on the top surface of the sliding connecting seat, the upper end of the vertical guide rod passes through the upper connecting seat, the vertical guide rod is provided with an anti-detachment cap, the vertical return spring is sleeved on the vertical guide rod and located between the anti-detachment cap and the upper connecting seat.

7. The center hole grinding apparatus for an assembly line as described in claim 6, characterized in that: The sliding connecting seat includes a top plate and two side plates. The two side plates are installed on both sides of the top plate. The top plate and the side plates enclose and form a mounting groove. The two ends of the transverse guide rod are installed on the side plates.

8. The center hole grinding device for an assembly line as described in claim 2, characterized in that: The upper connecting seat is provided with a guide sleeve, and the vertical guide rod is slidably disposed within the guide sleeve.

9. The center hole grinding device for an assembly line as described in claim 1, characterized in that: The gripper is provided with a positioning slot.

10. The center hole grinding apparatus for an assembly line as described in claim 1, characterized in that: It also includes a frame, on which the lifter and the motion drive are mounted.

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