Automatic crankshaft grinding device

Abstract

The utility model relates to the technical field of crankshaft grinding, in particular to an automatic crankshaft grinding device which comprises a rack, a machining table and a back plate are fixedly connected in the rack, and a feeding assembly, a grinding assembly and a storage assembly are sequentially arranged on the machining table from left to right. The grinding device has the advantages that the translation plate is driven by the electric sliding rail to get close to the lifting assembly until the positioning shaft coincides with the axis of the grinding jig, the lifting assembly is started to drive the positioning shaft to move downwards to press a workpiece, the driving motor is started to drive the grinding jig to rotate, the workpiece does not rotate, and the grinding jig and the eccentric end face of the workpiece are ground; after grinding operation is completed, the positioning shaft ascends to release locking of the workpiece, the workpiece is transferred to the position below the transferring assembly along with the grinding jig and clamped through the rotary mechanical clamping hand, and the vertically-arranged workpiece can be rotated to the horizontal state through the rotary mechanical clamping hand and horizontally placed on the storage assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft grinding, in particular to a device for automatic crankshaft grinding. Background Art

[0002] The crankshaft is the main rotating part of the engine, which is made of carbon structural steel or ductile iron. The function of the crankshaft is to convert the thrust from the piston connecting rod into rotational torque, convert the reciprocating linear motion of the piston into the circular rotation of the crankshaft, and transmit the engine torque to the transmission system through the flywheel. When the crankshaft is processed, there will be certain burrs on its eccentric end face. Usually, a grinding device is used to grind its surface to ensure the accuracy and smoothness of the crankshaft surface, and to ensure its performance and work efficiency.

[0003] For example, a crankshaft processing grinding device with announcement number CN209319427U, after the utility model is installed, the external power supply and air source are turned on, the workpiece is placed on the pneumatic clamp for fixing, and a telescopic cylinder is installed at the output end of the grinding motor, and a grinding brush carrier is arranged on the telescopic cylinder, and the grinding brush plate is installed on the grinding brush carrier, so that the output end of the telescopic cylinder drives the grinding brush plate to convex or concave outward. When in use, the shape of the grinding brush plate can be controlled according to the degree of convexity and concavity of the workpiece surface. However, in actual use of the above-mentioned crankshaft processing grinding device, workers are required to manually place the crankshaft on the clamping end of the pneumatic clamp, fix it on the pneumatic clamp, and then perform the grinding operation. After the grinding operation is completed, the crankshaft needs to be removed. Such operation requires manual loading and unloading operations, which will reduce the efficiency of crankshaft grinding. Therefore, a crankshaft automatic grinding device is needed to solve the above-mentioned problem. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0005] Therefore, one purpose of the present invention is to provide a device for automatically grinding a crankshaft to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the utility model on one hand provides a device for automatic grinding of crankshafts, including a frame, a processing table and a back plate are fixedly connected to the inside of the frame, a loading assembly, a grinding assembly and a storage assembly are arranged on the processing table from left to right in sequence, a transfer assembly is arranged inside the conveying back plate, the transfer assembly is located above the loading assembly, the transfer assembly includes a fixed plate fixedly connected to the back plate, a double-slide electric guide rail is fixedly connected to one side of the fixed plate, the two output ends of the double-slide electric guide rail are respectively fixedly connected to a first mounting seat and a second mounting seat, the first mounting seat is fixedly connected to a first cylinder, the output end of the first cylinder is fixedly connected to a mechanical clamping hand, the second mounting seat is fixedly connected to a second cylinder, the output end of the second cylinder is fixedly connected to a rotating mechanical clamping hand.

[0007] Preferably, any of the above schemes comprises a chain conveyor fixedly connected to the frame, and a plurality of vertically arranged crankshaft bearing pins are fixedly connected to the chain surface of the chain conveyor.

[0008] Preferably, any of the above solutions has a first guide rod fixedly connected to the top of the mechanical clamping hand, and the first guide rod is slidably connected to the first mounting seat.

[0009] Preferably, any of the above solutions has a second guide rod fixedly connected to the top surface of the rotating mechanical clamping hand, and the second guide rod is slidably connected to the second mounting seat.

[0010] Preferably, the grinding assembly includes a mounting plate fixedly connected to the processing table, the top surface of the mounting plate fixedly connected to an electric slide rail, the output end of the electric slide rail fixedly connected to a translation plate, the bottom surface of the translation plate fixedly connected to a driving motor, the output end of the driving motor fixedly connected to a grinding jig, the top surface of the mounting plate fixedly connected to a lifting assembly, the telescopic end of the lifting assembly fixedly connected to a positioning shaft, and the positioning shaft corresponds to the grinding jig up and down.

[0011] Preferably, any of the above schemes is that the telescopic end of the lifting assembly is fixedly connected with a buffer, and the fixed end of the lifting assembly is fixedly connected with a limit plate, and the limit plate corresponds to the buffer in upper and lower directions.

[0012] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0013] When the crankshaft needs to be ground, the crankshaft is manually inserted and placed on the chain of the chain conveyor, and automatically moves to the bottom of the transfer assembly following the chain, so that the crankshaft can be automatically transported. After the crankshaft automatically moves to the position under the mechanical clamping hand, the first cylinder is turned on to drive the mechanical clamping hand to move downward until it moves to the appropriate position and grabs the workpiece. Subsequently, the workpiece is moved to the top of the grinding assembly through the double-slide electric guide rail, and the grinding end of the workpiece is sleeved on the grinding fixture through the mechanical clamping hand, and the electric slide rail drives the translation plate close to the lifting assembly until the positioning axis coincides with the axis of the grinding fixture, and then the lifting assembly is turned on. The workpiece is moved to the bottom of the transfer assembly along with the grinding jig and clamped by a rotating mechanical clamping hand. The vertically arranged workpiece can be rotated to a horizontal state and placed horizontally on the material storage assembly by the rotating mechanical clamping hand. The above operation can realize automatic grinding of the crankshaft, and loading and unloading of materials is more convenient. There is no need for manual clamping operations one by one, which can greatly improve the work efficiency of the grinding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the assembly of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the grinding assembly of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the feeding assembly of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the transfer component of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the mechanical clamping hand of the utility model;

[0019] Figure 6 It is a structural schematic diagram of the rotary mechanical clamping hand of the utility model.

[0020] In the figure: 1-frame, 2-processing table, 3-back plate, 4-feeding assembly, 401-chain conveyor, 402-crankshaft bearing pin, 5-grinding assembly, 501-mounting table, 502-electric slide rail, 503-translation plate, 504-drive motor, 505-grinding fixture, 506-lifting assembly, 507-positioning axis, 51-storage assembly, 6-transfer assembly, 601-fixed plate, 602-double slide electric guide rail, 603-first mounting seat, 604-second mounting seat, 605-first cylinder, 606-mechanical clamping hand, 607-second cylinder, 608-rotating mechanical clamping hand, 7-first guide rod, 8-second guide rod, 9-buffer, 10-limiting plate. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings, but the protection scope of the utility model is not limited to the following.

[0022] like Figures 1 to 6 As shown, a device for automatic grinding of crankshafts includes a frame 1, a processing table 2 and a back plate 3 are fixedly connected inside the frame 1, a loading assembly 4, a grinding assembly 5 and a storage assembly 51 are arranged on the processing table 2 from left to right, a transfer assembly 6 is arranged inside the conveying back plate 3, and the transfer assembly 6 is located above the loading assembly 4, and the transfer assembly 6 includes a fixed plate 601 fixedly connected to the back plate 3, a double-slide electric guide rail 602 is fixedly connected to one side of the fixed plate 601, and two output ends of the double-slide electric guide rail 602 are respectively fixedly connected to a first mounting seat 603 and a second mounting seat 604, a first cylinder 605 is fixedly connected inside the first mounting seat 603, and the output end of the first cylinder 605 is fixedly connected to a mechanical clamping hand 606, and a second cylinder 607 is fixedly connected inside the second mounting seat 604, and the output end of the second cylinder 607 is fixedly connected to a rotating mechanical clamping hand 608.

[0023] As an optional technical solution of the present utility model, the loading component 4 includes a chain conveyor 401 fixedly connected to the frame, and a plurality of vertically arranged crankshaft bearing pins 402 are fixedly connected to the chain surface of the chain conveyor 401. The crankshaft is manually and centrally inserted into the chain of the chain conveyor 401, and automatically runs to the bottom of the transfer component 6 following the chain, thereby realizing automatic conveying of the crankshaft workpiece.

[0024] As an optional technical solution of the utility model, the top of the mechanical clamping hand 606 is fixedly connected with a first guide rod 7, and the first guide rod 7 is slidably connected to the first mounting seat 603. The first cylinder 605 is turned on to drive the mechanical clamping hand 606 to move downward until it moves to a suitable position and grabs the workpiece, which can facilitate the transfer of the workpiece to the top of the grinding assembly 5, and the first guide rod 7 can limit the lifting and lowering of the mechanical clamping hand 606.

[0025] As an optional technical solution of the utility model, the top surface of the rotating mechanical clamping hand 608 is fixedly connected to a second guide rod 8, and the second guide rod 8 is slidably connected to the second mounting seat 604, and is clamped by the rotating mechanical clamping hand 608. The rotating mechanical clamping hand 608 can rotate the vertically set workpiece to a horizontal state, and place it horizontally on the storage assembly 51 to achieve the purpose of automatic unloading, and the second guide rod 8 can limit the lifting and lowering of the rotating mechanical clamping hand 608.

[0026] As an optional technical solution of the utility model, the grinding assembly 5 includes a mounting plate 501 fixedly connected to the processing table 2, the top surface of the mounting plate 501 is fixedly connected to an electric slide rail 502, the output end of the electric slide rail 502 is fixedly connected to a translation plate 503, the bottom surface of the translation plate 503 is fixedly connected to a drive motor 504, the output end of the drive motor 504 is fixedly connected to a grinding fixture 505, the top surface of the mounting plate 501 is fixedly connected to a lifting assembly 506, and the telescopic end of the lifting assembly 506 is fixedly connected to the bottom surface of the translation plate 503. A positioning shaft 507 is fixedly connected, and the positioning shaft 507 corresponds to the grinding jig 505 up and down. The electric slide rail 502 drives the translation plate 503 to approach the lifting component 506 until the positioning shaft 507 coincides with the axis of the grinding jig 505. The lifting component 506 is turned on to drive the positioning shaft 507 to move downward to press the workpiece. The drive motor 504 is started to drive the grinding jig 505 to rotate, while the workpiece does not rotate. The grinding jig 505 and the eccentric end face of the workpiece are ground, so the purpose of automatic grinding can be achieved.

[0027] As an optional technical solution of the present invention, the telescopic end of the lifting component 506 is fixedly connected to a buffer 9, and the fixed end of the lifting component 506 is fixedly connected to a limit plate 10. The limit plate 10 corresponds to the buffer 9 up and down. Through the coordinated setting of the buffer 9 and the limit plate 10, damage to the workpiece can be prevented when clamping it.

[0028] A device for automatic crankshaft grinding, the working principle is as follows:

[0029] 1): When the crankshaft needs to be ground, the crankshaft is manually inserted onto the chain of the chain conveyor 401, and the crankshaft automatically moves to the bottom of the transfer assembly 6 along the chain. After the crankshaft automatically moves to the position below the mechanical clamping hand 606, the first cylinder 605 is turned on to drive the mechanical clamping hand 606 to move downward until it moves to the appropriate position to grab the workpiece.

[0030] 2): Move the workpiece to the top of the grinding assembly 5 through the double-slide electric guide rail 602, and sleeve the grinding end of the workpiece on the grinding fixture 505 through the mechanical clamping hand 606, and drive the translation plate 503 to approach the lifting assembly 506 through the electric slide rail 502 until the positioning shaft 507 coincides with the axis of the grinding fixture 505, then open the lifting assembly 506 to drive the positioning shaft 507 to move downward to press the workpiece.

[0031] 3): The driving motor 504 is started to drive the grinding jig 505 to rotate, while the workpiece does not rotate. The grinding jig 505 and the eccentric end face of the workpiece are ground. After the grinding operation is completed, the positioning shaft 507 rises to release the lock on the workpiece. The workpiece is transferred to the bottom of the transfer component 6 along with the grinding jig 505 and clamped by the rotating mechanical clamping hand 608. The vertically set workpiece can be rotated to a horizontal state by rotating the mechanical clamping hand 608 and placed horizontally on the storage component 51.

[0032] To sum up, in the device for automatic crankshaft grinding, when the crankshaft grinding operation is needed, the crankshaft is manually inserted and placed on the plate chain of the chain plate conveyor 401, and automatically moves to the bottom of the transfer component 6 following the plate chain, so as to realize the automatic transportation of the crankshaft workpiece. After the crankshaft automatically moves to the position below the mechanical clamping hand 606, the first cylinder 605 is turned on to drive the mechanical clamping hand 606 to move downward until it moves to a suitable position and grabs the workpiece, and then the workpiece is moved to the top of the grinding component 5 through the double-slide electric guide rail 602, and the grinding end of the workpiece is sleeved on the grinding jig 505 through the mechanical clamping hand 606, and the electric slide rail 502 drives the translation plate 503 to approach the lifting component 506 until the positioning shaft 507 and the grinding jig 505 are aligned. After the axes are aligned, the lifting assembly 506 is turned on to drive the positioning shaft 507 to move downward to press the workpiece, and the driving motor 504 is started to drive the grinding jig 505 to rotate, while the workpiece does not rotate. The grinding jig 505 and the eccentric end face of the workpiece are ground. After the grinding operation is completed, the positioning shaft 507 rises to release the lock on the workpiece, and the workpiece is transferred to the bottom of the transfer assembly 6 along with the grinding jig 505 and clamped by the rotating mechanical clamping hand 608. The vertically set workpiece can be rotated to a horizontal state by rotating the mechanical clamping hand 608 and placed horizontally on the storage assembly 51. The above operation can realize automatic grinding of the crankshaft, and loading and unloading of materials is more convenient. There is no need for manual clamping operations one by one, which can greatly improve the work efficiency of the grinding operation.

Claims

1. A device for automatic crankshaft grinding, characterized in that: The machine comprises a frame (1), wherein a processing table (2) and a back plate (3) are fixedly connected inside the frame (1), a loading assembly (4), a grinding assembly (5) and a material storage assembly (51) are arranged on the processing table (2) from left to right in sequence, and a transfer assembly (6) is arranged inside the conveying back plate (3), wherein the transfer assembly (6) is located above the loading assembly (4), and the transfer assembly (6) comprises a fixing plate (601) fixedly connected to the back plate (3), and a double-slide electric guide rail ( 602), the two output ends of the double-slide electric guide rail (602) are respectively fixedly connected to a first mounting seat (603) and a second mounting seat (604), the interior of the first mounting seat (603) is fixedly connected to a first cylinder (605), the output end of the first cylinder (605) is fixedly connected to a mechanical clamping hand (606), the interior of the second mounting seat (604) is fixedly connected to a second cylinder (607), and the output end of the second cylinder (607) is fixedly connected to a rotating mechanical clamping hand (608).

2. The automatic crankshaft grinding device according to claim 1, characterized in that: The loading assembly (4) comprises a chain conveyor (401) fixedly connected to a frame, and a plurality of vertically arranged crankshaft bearing pins (402) are fixedly connected to the surface of the chain of the chain conveyor (401).

3. The automatic crankshaft grinding device according to claim 2, characterized in that: A first guide rod (7) is fixedly connected to the top of the mechanical clamping hand (606), and the first guide rod (7) is slidably connected to the first mounting seat (603).

4. The automatic crankshaft grinding device according to claim 3, characterized in that: A second guide rod (8) is fixedly connected to the top surface of the rotating mechanical clamping hand (608), and the second guide rod (8) is slidably connected to the second mounting seat (604).

5. The automatic crankshaft grinding device according to claim 4, characterized in that: The grinding assembly (5) comprises a mounting plate (501) fixedly connected to the processing table (2); the top surface of the mounting plate (501) is fixedly connected to an electric slide rail (502); the output end of the electric slide rail (502) is fixedly connected to a translation plate (503); the bottom surface of the translation plate (503) is fixedly connected to a driving motor (504); the output end of the driving motor (504) is fixedly connected to a grinding jig (505); the top surface of the mounting plate (501) is fixedly connected to a lifting assembly (506); the telescopic end of the lifting assembly (506) is fixedly connected to a positioning shaft (507); the positioning shaft (507) corresponds to the grinding jig (505) in upper and lower directions.

6. The automatic crankshaft grinding device according to claim 5, characterized in that: The telescopic end of the lifting component (506) is fixedly connected to a buffer (9), and the fixed end of the lifting component (506) is fixedly connected to a limit plate (10), and the limit plate (10) corresponds to the buffer (9) in upper and lower positions.

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