Automatic arc surface grinding device of grinding wheel for machining crankshaft connecting rod of sewing machine

Abstract

The utility model provides an automatic arc surface grinding device of a grinding wheel for processing a crankshaft connecting rod of a sewing machine, which comprises a working table, a clamping structure for fixing a crankshaft is rotatably connected onto the working table, a supporting table is connected onto the working table through a transverse feeding structure, and a supporting frame is connected onto the supporting table through a longitudinal feeding structure. A grinding wheel is rotationally connected to the supporting frame, an arc-shaped grinding face is arranged on the outer circle face of the grinding wheel, and the grinding face is used for grinding the connecting rod journal of the crankshaft, so that the purpose of improving practicability is achieved.

Description

Technical Field

[0001] The utility model relates to an automatic arc surface grinding device of a grinding wheel used for processing a crankshaft connecting rod of a sewing machine. Background Art

[0002] At present, the Chinese patent with authorization announcement number CN221210961U discloses a new type of double-grinding wheel frame crankshaft grinder, including a base plate, the top of the base plate is fixedly connected to a first mounting plate, the side of the first mounting plate is fixedly connected to a first electric push rod, the side of the first electric push rod is fixedly connected to a movable plate, the bottom of the movable plate is fixedly connected to a slider, the top of the base plate is fixedly connected to a fixed block, and the top of the fixed block is fixedly connected to a first mounting seat. By controlling the operation of the first electric push rod, the movable plate can be driven to move with the help of the sliding action of the slider in the first slide groove, and then the fixed ring can be driven to move, so as to achieve the purpose of adjusting the crankshaft clamping distance and ensure that it is suitable for crankshafts of different sizes. By controlling the operation of the first motor, the first rotating shaft can be driven to rotate, the connecting plate can be driven to rotate, and then the fixed ring can drive the crankshaft to rotate, so as to achieve the purpose of rotating the crankshaft.

[0003] However, the outer cylindrical surface of the grinding wheel of this grinder is flat, and it can only grind the connecting rod journal of the crankshaft into a cylindrical shape. However, the connecting rod journal of the crankshaft of the sewing machine requires an arc structure, which this grinder is obviously unable to adapt to, and thus has poor practicality. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a device for automatically grinding arc surfaces with a grinding wheel for processing a crankshaft connecting rod of a sewing machine, so as to achieve the purpose of improving practicality.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a device for automatically grinding arc surfaces with a grinding wheel for processing a sewing machine crankshaft connecting rod, comprising a workbench, a clamping structure for fixing the crankshaft is rotatably connected to the workbench, a support table is connected to the workbench through a transverse feed structure, the support table is connected to a support frame through a longitudinal feed structure, a grinding wheel is rotatably connected to the support frame, an arc-shaped grinding surface is provided on the outer cylindrical surface of the grinding wheel, and the grinding surface is used to grind the connecting rod journal of the crankshaft.

[0006] To implement the above technical solution, the crankshaft is fixed on the clamping structure, and the clamping structure can drive the crankshaft to rotate. The arc-shaped grinding surface is made to correspond to the connecting rod journal of the crankshaft through the transverse feed structure and the longitudinal feed structure. While the grinding wheel rotates, the longitudinal feed structure drives the support frame to move toward the crankshaft, so that the sand grinds the connecting rod journal, so that the surface of the connecting rod journal obtains an arc-shaped structure.

[0007] As a preferred embodiment of the present utility model, an installation frame is connected to the workbench, a connecting shaft is rotatably connected to the installation frame, a positioning block is fixedly connected to the connecting shaft, and a grinding member for abutting against the grinding surface is provided on the positioning block.

[0008] To implement the above technical solution, the grinding surface is abutted against the grinding member through the transverse feed structure and the longitudinal feed structure. While the connecting shaft rotates, the grinding wheel also rotates, so that the grinding member can grind the grinding surface to improve the accuracy of the grinding surface.

[0009] As a preferred embodiment of the present utility model, an adjusting member is connected to the positioning block, the adjusting member is connected to the grinding member, and the axis of the adjusting member passes through the axis of the connecting shaft.

[0010] To implement the above technical solution, after the grinding wheel finishes grinding one connecting rod journal, the grinding surface of the grinding wheel will deform due to wear. The adjusting member drives the grinding member to move towards the grinding surface, and the grinding member grinds the grinding surface to better meet the process requirements and improve the utilization rate of the grinding wheel.

[0011] As a preferred embodiment of the present utility model, a placement arc surface is provided on the connecting shaft, and the placement arc surface is used to correspond to the grinding surface.

[0012] To implement the above technical solution, when the grinding wheel approaches the grinding member, the grinding surface is placed in the placement arc surface to reduce the wear of the grinding wheel.

[0013] As a preferred embodiment of the present utility model, a power motor is provided on the workbench, the power motor is connected with a driving wheel, the connecting shaft is connected with a driven wheel, and the driving wheel rotates the driven wheel through a connecting belt.

[0014] To implement the above technical solution, when the power motor is started, the driving wheel rotates the driven wheel through the connecting belt, so that the connecting shaft can rotate, and the power motor can be far away from the grinding wheel, making the power motor not easily damaged.

[0015] As a preferred embodiment of the present utility model, a cooling pipe is provided on the support frame, and the water outlet of the cooling pipe faces the grinding surface.

[0016] To implement the above technical solution, the coolant is led out from the cooling pipe and guided towards the grinding surface, reducing the temperature of the grinding wheel when grinding the connecting rod journal and improving the grinding accuracy.

[0017] As a preferred embodiment of the present utility model, the clamping structure includes a fixed pipe and a fixed bolt. The fixed pipe is rotatably connected to the workbench, the end of the crankshaft penetrates into the fixed pipe, the fixed bolt is threadedly connected to the fixed pipe, and the fixed bolt abuts against the end of the crankshaft.

[0018] To implement the above technical solution, the end of the crankshaft is inserted into the fixed tube, and the fixing bolt is rotated so that the fixing bolt abuts against the end of the crankshaft, and the generated frictional force realizes the positioning of the crankshaft. When the fixed tube rotates, the crankshaft can rotate synchronously.

[0019] As a preferred solution of the present utility model, the transverse feed structure includes a transverse screw rod, a transverse motor, and a transverse slide bar. The transverse motor is fixed on the workbench, the transverse screw rod is connected to the transverse motor, the transverse slide bar is fixed on the workbench and is arranged parallel to the transverse screw rod, and the support table is threadedly connected to the transverse screw rod and slidably connected to the transverse slide bar.

[0020] To implement the above technical solution, when the transverse motor is started and the transverse screw rod rotates, through the conduction action of the thread, the support table can be moved along the transverse slide bar so that the support table moves transversely along the workbench.

[0021] As a preferred solution of the present utility model, the longitudinal feed structure includes a longitudinal screw rod, a longitudinal motor, and a longitudinal slide bar. The longitudinal motor is fixed on the support table, the longitudinal screw rod is connected to the longitudinal motor, the longitudinal slide bar is fixed on the support table and is arranged parallel to the longitudinal screw rod, and the support frame is threadedly connected to the longitudinal screw rod and slidably connected to the longitudinal slide bar.

[0022] To implement the above technical solution, when the longitudinal motor is started and the longitudinal screw rod rotates, through the conduction action of the thread, the support frame can be moved along the longitudinal slide bar so that the support frame moves longitudinally along the workbench. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the external structure of the embodiment;

[0024] Figure 2 It is a schematic diagram showing the position of the transverse feed structure;

[0025] Figure 3 It is Figure 2 an enlarged view of part A of

[0026] Figure 4 It is a schematic diagram showing the position of the driving motor.

[0027] Reference numerals: 1, workbench; 2, clamping structure; 21, fixed pipe; 22, fixed bolt; 3, transverse feeding structure; 31, transverse screw; 32, transverse motor; 33, transverse slide bar; 4, support table; 5, longitudinal feeding structure; 51, longitudinal screw; 52, longitudinal motor; 53, longitudinal slide bar; 6, support frame; 71, driving motor; 711, belt; 72, grinding wheel; 73, grinding surface; 74, cooling pipe; 8, mounting bracket; 81, connecting shaft; 82, positioning block; 83, grinding part; 84, adjusting part; 841, micrometer screw; 85, placing arc surface; 91, power motor; 92, driving wheel; 93, driven wheel; 94, connecting belt. Detailed implementation manners

[0028] The following further details the specific implementation manners of the present utility model in conjunction with the accompanying drawings, so that the technical solutions of the present utility model are easier to understand and master.

[0029] An automatic grinding arc surface device for a grinding wheel 72 used for processing a sewing machine crankshaft connecting rod, comprising a horizontally placed workbench 1. A clamping structure 2 for fixing the crankshaft is rotatably connected to the workbench 1. The clamping structure 2 includes a fixed pipe 21 and a fixed bolt 22. The fixed pipe 21 is horizontally arranged and rotatably connected to the workbench 1 through a servo motor, and the servo motor is fixed on the workbench 1. The length direction of the fixed pipe 21 is arranged along the transverse direction of the workbench 1. The end of the crankshaft is inserted into the fixed pipe 21 so that the crankshaft is horizontally placed. The fixed bolt 22 is threadedly connected to the fixed pipe 21, and the fixed bolt 22 rotates and abuts against the end of the crankshaft, and the generated frictional force realizes the fixation of the crankshaft.

[0030] A support table 4 is connected to the workbench 1 through a transverse feeding structure 3. The transverse feeding structure 3 includes a transverse screw 31, a transverse motor 32, and a transverse slide bar 33. The transverse motor 32 is fixed on the workbench 1, the transverse screw 31 is connected to the transverse motor 32 through a coupling, and the transverse screw 31 is arranged along the transverse direction of the workbench 1. The transverse slide bar 33 is fixed on the workbench 1 and arranged in parallel with the transverse screw 31. The support table 4 is threadedly connected to the transverse screw 31 and slidably connected to the transverse slide bar 33. The transverse motor 32 is a servo motor.

[0031] When the transverse motor 32 is started, the transverse screw 31 rotates, and through the conduction action of the thread, the support table 4 moves along the length direction of the transverse slide bar 33.

[0032] The support table 4 is connected to a support frame 6 through a longitudinal feed structure 5. The longitudinal feed structure 5 includes a longitudinal screw 51, a longitudinal motor 52, and a longitudinal slide bar 53. The longitudinal motor 52 is fixed on the support table 4, and the longitudinal screw 51 is connected to the longitudinal motor 52 through a coupling. The longitudinal screw 51 is arranged along the longitudinal direction of the workbench 1. The longitudinal slide bar 53 is fixed on the support table 4 and is arranged in parallel with the longitudinal screw 51. The support frame 6 is threadedly connected to the longitudinal screw 51 and is slidably connected to the longitudinal slide bar 53.

[0033] When the longitudinal motor 52 is started, the longitudinal screw 51 rotates. Through the conduction of the thread, the support frame 6 moves along the length direction of the longitudinal slide bar 53. Thus, the support frame 6 can move along the transverse and longitudinal directions of the workbench 1.

[0034] A driving motor 71 is fixedly connected to the support frame 6. A grinding wheel 72 is rotatably connected to the support frame 6. The driving motor 71 rotates the grinding wheel 72 through a belt 711. An arc-shaped grinding surface 73 is provided on the outer circumferential surface of the grinding wheel 72. The grinding surface 73 is used for grinding the connecting rod journal of the crankshaft.

[0035] A cooling pipe 74 is provided on the support frame 6. The water outlet of the cooling pipe 74 faces the grinding surface 73. After the coolant is discharged from the cooling pipe 74, it can be sprayed onto the grinding surface 73 to cool the connecting rod journal and the grinding wheel 72.

[0036] After the grinding surface 73 grinds the connecting rod journal, it will experience a certain amount of wear, causing the grinding surface 73 to deform. An inverted U-shaped mounting bracket 8 is fixedly connected to the workbench 1. A vertically arranged connecting shaft 81 is rotatably connected to the mounting bracket 8. A positioning block 82 is fixedly connected to the middle of the connecting shaft 81. A grinding member 83 for abutting against the grinding surface 73 is provided on the positioning block 82.

[0037] An adjusting member 84 is fixedly connected to the positioning block 82. The adjusting member 84 is a micrometer. The micrometer screw 841 is fixedly connected to the grinding member 83. The axis of the temperature measuring screw passes through the axis of the connecting shaft 81.

[0038] A placement arc surface 85 is provided on the connecting shaft 81. The placement arc surface 85 is used to correspond to the grinding surface 73.

[0039] A vertically arranged power motor 91 is fixed on the workbench 1. The power motor 91 is connected to a power wheel 92. A driven wheel 93 is fixedly connected to the connecting shaft 81. The connecting shaft 81 and the driven wheel 93 are coaxially arranged. The power wheel 92 rotates the driven wheel 93 through a connecting belt 94, enabling the power motor 91 to move away from the connecting shaft 81. Both the driven wheel 93 and the power wheel 92 are gears. The connecting belt 94 is a toothed belt. The power motor 91 is a servo motor to drive the connecting shaft 81 to rotate forward and backward.

[0040] A water tank is provided on the workbench 1, and the coolant is led out of the water tank to avoid damage to the power motor 91 caused by the coolant. Both the driving wheel 92 and the driven wheel 93 are located in the water tank.

[0041] Of course, the above are only typical examples of the present utility model. In addition, the present utility model can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present utility model.

Claims

1. An automatic grinding device for the arc surface of a grinding wheel used for processing the crankshaft connecting rod of a sewing machine, including a workbench (1), and a clamping structure (2) for fixing the crankshaft is rotatably connected to the workbench (1), and the characteristics are as follows: A support table (4) is connected to the described workbench (1) through a transverse feed structure (3). A support frame (6) is connected to the support table (4) through a longitudinal feed structure (5). A grinding wheel (72) is rotatably connected to the support frame (6). An arc-shaped grinding surface (73) is provided on the outer circumferential surface of the grinding wheel (72). The grinding surface (73) is used for grinding the connecting rod journal of the crankshaft.

2. The automatic grinding device for the arc surface of a grinding wheel used for processing the crankshaft connecting rod of a sewing machine according to claim 1, characterized in that: An installation frame (8) is connected to the workbench (1). A connecting shaft (81) is rotatably connected to the installation frame (8). A positioning block (82) is fixedly connected to the connecting shaft (81). A grinding member (83) for abutting against the grinding surface (73) is provided on the positioning block (82).

3. An automatic grinding device for the arc surface of a grinding wheel used for processing the crankshaft connecting rod of a sewing machine according to claim 2, characterized in that: An adjusting member (84) is connected to the positioning block (82). The adjusting member (84) is connected to the grinding member (83). The axis of the adjusting member (84) passes through the axis of the connecting shaft (81).

4. An automatic grinding device for the arc surface of a grinding wheel used for processing the crankshaft connecting rod of a sewing machine according to claim 3, characterized in that: A placing arc surface (85) is provided on the connecting shaft (81). The placing arc surface (85) is used to correspond to the grinding surface (73).

5. An automatic grinding device for the arc surface of a grinding wheel used for processing the crankshaft connecting rod of a sewing machine according to claim 2 or 3 or 4, characterized in that: A power motor (91) is provided on the workbench (1). The power motor (91) is connected to a power wheel (92). A driven wheel (93) is connected to the connecting shaft (81). The power wheel (92) rotates the driven wheel (93) through a connecting belt (94).

6. The automatic grinding device for the arc surface of a grinding wheel used for processing the crankshaft connecting rod of a sewing machine according to claim 1, characterized in that: A cooling pipe (74) is provided on the support frame (6). The water outlet of the cooling pipe (74) faces the grinding surface (73).

7. An automatic grinding device for the arc surface of a grinding wheel used for processing the crankshaft connecting rod of a sewing machine according to claim 1, characterized in that: The clamping structure (2) includes a fixed pipe (21) and a fixing bolt (22). The fixed pipe (21) is rotatably connected to the workbench (1). The end of the crankshaft penetrates into the fixed pipe (21). The fixing bolt (22) is threadedly connected to the fixed pipe (21). The fixing bolt (22) abuts against the end of the crankshaft.

8. An automatic grinding device for the arc surface of a grinding wheel used for processing the crankshaft connecting rod of a sewing machine according to claim 1, characterized in that: The transverse feed structure (3) includes a transverse screw (31), a transverse motor (32), and a transverse slide bar (33). The transverse motor (32) is fixed to the workbench (1). The transverse screw (31) is connected to the transverse motor (32). The transverse slide bar (33) is fixed to the workbench (1) and is arranged parallel to the transverse screw (31). The support table (4) is threadedly connected to the transverse screw (31) and slidably connected to the transverse slide bar (33).

9. An automatic grinding device for the arc surface of a grinding wheel used for processing the crankshaft connecting rod of a sewing machine according to claim 1 or 8, characterized in that: The longitudinal feed structure (5) includes a longitudinal screw (51), a longitudinal motor (52), and a longitudinal slide bar (53). The longitudinal motor (52) is fixed to the support table (4). The longitudinal screw (51) is connected to the longitudinal motor (52). The longitudinal slide bar (53) is fixed to the support table (4) and is arranged parallel to the longitudinal screw (51). The support frame (6) is threadedly connected to the longitudinal screw (51) and slidably connected to the longitudinal slide bar (53).

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