Automatic measuring device for axial control of crankshaft grinding machine

Abstract

The utility model relates to the technical field of crankshaft grinding machines, in particular to an automatic measuring device for axial control of a crankshaft grinding machine, which comprises a bottom plate, a fixing component, a hydraulic angle motor, a coupler, a first rotating arm, a connecting plate, a second rotating arm, a measuring arm, a mounting seat, a probe and a transmission shaft. A hydraulic angle motor is installed in the fixing assembly, the output end of the hydraulic angle motor penetrates through the fixing assembly to be connected with one end of a coupler, the other end of the coupler is connected with a transmission shaft, and a first rotating arm is installed on the right position of the outer side of the transmission shaft. According to the utility model, the hydraulic angle motor is arranged and can drive the first rotating arm to rotate during operation, and the connecting plate and the second rotating arm form a rotating whole arm to rotate, so that the measuring arm drives the mounting seat and the probe to rotate, the gap between the side surface of the grinding wheel and the side surface of the journal is measured and controlled, the production efficiency is improved, the operation is simple, and the use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of crankshaft grinding technology, and in particular to an automatic measuring device for axial control of crankshaft grinding machines. Background Technology

[0002] A crankshaft grinding machine is a high-precision machine tool specifically designed for machining crankshafts. It is mainly used to repair or manufacture the main journals and connecting rod journals of engine crankshafts. Through precision grinding processes, it ensures that the dimensional accuracy, roundness, cylindricity, and surface roughness of the crankshaft meet the design requirements. It is widely used in crankshaft repair and manufacturing in the automotive, shipbuilding, and engineering machinery industries.

[0003] In existing crankshaft grinding operations, it is necessary to frequently visually inspect the clearance between the side of the grinding wheel and the side of the journal in order to adjust the grinding wheel feed. This method is not only cumbersome and increases labor intensity, but also poses safety hazards. It is easy for grinding accuracy to decrease due to visual errors or fatigue. At the same time, frequent machine stops for inspection will interrupt the processing flow, reduce production efficiency, and make it difficult to meet the needs of modern mass production.

[0004] Therefore, in response to the problem that existing crankshaft grinding operations require frequent visual inspection of the clearance between the grinding wheel side and the journal side, which is tedious, dangerous, and affects work efficiency, there is an urgent need to design a new type of automatic measuring device for axial control of crankshaft grinding machines. Utility Model Content

[0005] In order to overcome the problem that existing crankshaft grinding operations require frequent visual inspection of the clearance between the grinding wheel side and the journal side, which is tedious, dangerous, and affects work efficiency.

[0006] The technical solution of this utility model is as follows: an automatic measuring device for axial control of a crankshaft grinding machine, comprising a base plate, a fixing assembly, a hydraulic rotary motor, a coupling, a first rotating arm, a connecting plate, a second rotating arm, a measuring arm, a mounting base, a probe, and a transmission shaft. The fixing assembly is located on the top right side of the base plate. The hydraulic rotary motor is installed inside the fixing assembly. The output end of the hydraulic rotary motor passes through the fixing assembly and is connected to one end of the coupling. The other end of the coupling is connected to the transmission shaft. The first rotating arm is installed on the right side of the outer side of the transmission shaft. One end of the connecting plate is installed at the front end of the first rotating arm. The second rotating arm is installed at the other end of the connecting plate. The left end of the transmission shaft is connected to the second rotating arm. The measuring arm is located on the front side of the connecting plate. The mounting base is located at the front end of the measuring arm. The probe is located on the front side of the mounting base.

[0007] Preferably, by setting a hydraulic rotary motor, the first rotating arm can be driven to rotate via a coupling during operation. When the first rotating arm rotates, it drives the second rotating arm to rotate synchronously via a connecting plate and a transmission shaft. This causes the measuring arm to drive the mounting base and probe to rotate. When the first and second rotating arms are in the horizontal position, it is in the working state, measuring the axial position of the crankshaft. When the first and second rotating arms are in the vertical position, they are in the retracted state, which facilitates axial movement of the crankshaft during gear shifting grinding, prevents collision with the crankshaft, improves production efficiency, ensures accuracy, and is simple and convenient to operate. This solves the problem that existing crankshaft grinding operations require frequent visual inspection of the clearance between the grinding wheel side and the journal side, which is tedious, dangerous, and affects work efficiency.

[0008] Preferably, a base plate is installed at the top center of the base plate, a bushing is installed on the top of the base plate, the drive shaft passes through the bushing, and a tapered sleeve is provided on the side surface of the first rotating arm and the second rotating arm near the bushing. The drive shaft is rotatably connected to the tapered sleeve.

[0009] Preferably, bearings are installed at both the left and right ends of the bushing, and the inner ring surface of the bearing is connected to the outer side of the drive shaft.

[0010] Preferably, clamping rings are installed at both ends of the bushing, and sealing rings are provided inside the clamping rings. Bushings are provided around the drive shaft at the positions corresponding to the sealing rings.

[0011] Preferably, mounting brackets are installed on the left side of both the front and rear sides of the bushing, a proximity switch is provided on the left end of the mounting bracket, and a sensing block is installed on the right side of the second rotating arm.

[0012] Preferably, two symmetrical mounting brackets are installed at the rear top of the base plate, and a buffer is installed at the front end of the mounting brackets.

[0013] Preferably, the fixing assembly includes a first fixing plate, a second fixing plate, and fastening bolts; the first fixing plate is installed on the top right side of the base plate, the second fixing plate is installed on the top left side of the first fixing plate, fastening bolts are provided at the four corners of the top of the first fixing plate, and the right side of the second fixing plate is connected to the left side of the hydraulic rotary motor.

[0014] The beneficial effects of this utility model are:

[0015] 1. By setting up a hydraulic rotary motor, the first rotating arm can be rotated during operation, and the connecting plate and the second rotating arm can rotate to form a rotating whole arm. This causes the measuring arm to drive the mounting base and probe to rotate, thereby measuring and controlling the gap between the grinding wheel side and the journal side. This improves production efficiency, has a high degree of automation, ensures the safety of production operations, and is accurate, which can improve the processing quality. It is also simple to operate and easy to use. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of an automatic measuring device for axial control of a crankshaft grinding machine according to the present invention.

[0017] Figure 2 The diagram shown is a three-dimensional structural schematic of the measuring arm of an automatic measuring device for axial control of a crankshaft grinding machine according to this utility model.

[0018] Figure 3 The diagram shown is a three-dimensional structural schematic of a proximity switch for an automatic measuring device used in axial control of a crankshaft grinding machine according to this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional structural schematic of a buffer for an automatic measuring device used for axial control of a crankshaft grinding machine according to this utility model.

[0020] Figure 5 The diagram shown is a cross-sectional view of the bushing structure of an automatic measuring device for axial control of a crankshaft grinding machine according to this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Base plate; 201. First fixing plate; 202. Second fixing plate; 203. Fastening bolt; 3. Hydraulic rotary motor; 4. Coupling; 5. First rotating arm; 6. Connecting plate; 7. Second rotating arm; 8. Measuring arm; 9. Mounting base; 10. Probe; 11. Base plate; 12. Bushing; 13. Drive shaft; 14. Tapered sleeve; 15. Bearing; 16. Pressure ring; 17. Bushing; 18. Sealing ring; 19. Mounting bracket; 20. Proximity switch; 21. Sensing block; 22. Fixing base; 23. Buffer. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5This utility model provides an embodiment: an automatic measuring device for axial control of a crankshaft grinding machine, comprising a base plate 1, a fixing assembly, a hydraulic rotary motor 3, a coupling 4, a first rotating arm 5, a connecting plate 6, a second rotating arm 7, a measuring arm 8, a mounting base 9, a probe 10, and a transmission shaft 13. The fixing assembly is located on the top right side of the base plate 1. The hydraulic rotary motor 3 is installed inside the fixing assembly. The output end of the hydraulic rotary motor 3 passes through the fixing assembly and is connected to one end of the coupling 4. The other end of the coupling 4 is connected to the transmission shaft 13. The first rotating arm 5 is installed on the outer right side of the transmission shaft 13. One end of the connecting plate 6 is installed at the front end of the first rotating arm 5. The second rotating arm 7 is installed at the other end of the connecting plate 6. The left end of the transmission shaft 13 is connected to the second rotating arm 7. The measuring arm 8 is located on the front side of the connecting plate 6. The front end of the measuring arm 8 is equipped with a mounting base 9, and a probe 10 is mounted on the front side of the mounting base 9. A hydraulic rotary motor 3 is used to drive the first rotating arm 5 to rotate through the coupling 4 during operation. The rotational motion of the first rotating arm 5 is transmitted to the second rotating arm 7 through the connecting plate 6 and the transmission shaft 13, realizing the synchronous rotation of the two arms. This, in turn, drives the measuring arm 8 and the probe 10 on the mounting base 9 to complete the rotational action. When the first rotating arm 5 and the second rotating arm 7 are in a horizontal position, the device enters the measurement operation state, which can accurately detect the axial position of the crankshaft. When the two arms rotate to the vertically upward position, the system switches to the retracted state. At this time, axial movement space can be ensured during the crankshaft shifting grinding process, effectively avoiding interference with the crankshaft. This design significantly improves production efficiency and has the characteristics of high measurement accuracy, simple operation, and strong practicality.

[0024] Please see Figure 1 and Figure 4 In this embodiment, a base plate 11 is installed at the top center of the base plate 1, and a bushing 12 is installed on the top of the base plate 11. The drive shaft 13 passes through the bushing 12. A tapered sleeve 14 is provided on the side surface of the first rotating arm 5 and the second rotating arm 7 near the bushing 12. The drive shaft 13 is rotatably connected to the tapered sleeve 14. By setting the bushing 12 and the tapered sleeve 14, the drive shaft 13 can be positioned, improving the rotational stability of the drive shaft 13. Bearings 15 are installed at both the left and right ends inside the bushing 12. The inner ring surface of the bearing 15 is connected to the outer side of the drive shaft 13. By setting the bearing 15, it can be ensured that the probe 10 on the measuring arm 8 will not move axially, which would affect the measurement accuracy of the axial direction. A clamping ring 16 is installed at both the left and right ends of the bushing 12. A sealing ring 18 is provided inside the clamping ring 16. A bushing 17 is provided around the drive shaft 13 at the position corresponding to the sealing ring 18. By setting the bushing 17 and the sealing ring 18, the bearing 15 can be protected, preventing dust from entering the bearing 15.

[0025] Please see Figures 1-4In this embodiment, mounting brackets 19 are installed on the left side of both the front and rear sides of the bushing 12. A proximity switch 20 is provided on the left end of the mounting bracket 19. A sensing block 21 is installed on the right side of the second rotating arm 7. By setting the proximity switch 20 and the sensing block 21, when the hydraulic angle motor 3 rotates to the working state, the sensing block 21 on the second rotating arm 7 touches the contact switch on the front side, and the electrical control arm maintains this working position. When the hydraulic angle motor 3 rotates to the non-working state, the sensing block 21 on the second rotating arm 7 touches the contact switch on the rear side, and the electrical control arm maintains this non-working position. Two symmetrical fixing seats 22 are installed on the rear side of the top of the base plate 1. A buffer is installed at the front end of the fixing seat 22. The shock absorber 23 ensures that the measuring arm 8 can stop slowly in both working and non-working states. The fixing components include a first fixing plate 201, a second fixing plate 202, and fastening bolts 203. The first fixing plate 201 is installed on the top right side of the base plate 1, and the second fixing plate 202 is installed on the top left side of the first fixing plate 201. Fastening bolts 203 are provided at the four corners of the top of the first fixing plate 201. The right side of the second fixing plate 202 is connected to the left side of the hydraulic angle motor 3. By setting the first fixing plate 201 and the second fixing plate 202, the hydraulic angle motor 3 can be installed, improving the installation strength and stability.

[0026] During operation, the hydraulic rotary motor 3 is installed through the fixing structure composed of the first fixing plate 201 and the second fixing plate 202. The first rotating arm 5 and the second rotating arm 7 are initially kept in a horizontal state to measure the axial position of the crankshaft. When shifting gears for grinding is required, the hydraulic rotary motor 3 is started to drive the first rotating arm 5 and the second rotating arm 7 to rotate synchronously through the transmission shaft 13, thereby causing the measuring arm 8 to rotate. During the rotation, the sensing block 21 on the second rotating arm 7 touches the contact switch on the rear side, and the electrical control arm maintains this non-working position. After the shifting gear grinding is completed, the measuring arm 8 is reset again. When the hydraulic rotary motor 3 returns to the working state, the sensing block 21 on the second rotating arm 7 touches the contact switch on the front side, and the electrical control arm maintains this working position.

[0027] Through the above steps, by setting up a hydraulic rotary motor 3, the first rotating arm 5 is driven to rotate through the coupling 4, and the second rotating arm 7 is driven to rotate synchronously through the connecting plate 6 and the transmission shaft 13, thereby driving the measuring arm 8 and the probe 10 to be accurately positioned. During operation, the first rotating arm 5 and the second rotating arm 7 are in a horizontal state to ensure the accuracy of crankshaft axial position measurement. When not in operation, both arms can be retracted vertically upward to avoid axial movement interference during crankshaft shifting grinding. The operation is simple, and while ensuring measurement accuracy, it effectively improves production efficiency, taking into account practicality and reliability. This solves the problem that existing crankshaft grinding operations require frequent visual inspection of the grinding wheel side and journal side clearance, which is tedious, dangerous, and affects work efficiency.

Claims

1. An automatic measuring device for axial control of crankshaft grinding machine, comprising a base plate (1); characterized in that: It also includes a fixed component, a hydraulic rotary motor (3), a shaft coupling (4), a first rotating arm (5), a connecting plate (6), a second rotating arm (7), a measuring arm (8), a mounting seat (9), a probe (10) and a transmission shaft (13), the top right side of the bottom plate (1) is provided with a fixed component, the inside of the fixed component is installed with a hydraulic rotary motor (3), one end of the output shaft of the hydraulic rotary motor (3) is connected with the shaft coupling (4) penetrating through the fixed component, the other end of the shaft coupling (4) is connected with the transmission shaft (13), the outside of the right side of the transmission shaft (13) is installed with the first rotating arm (5), the front end of the first rotating arm (5) is installed with one end of the connecting plate (6), the other end of the connecting plate (6) is installed with the second rotating arm (7), the left end of the transmission shaft (13) is connected with the second rotating arm (7), the front side of the connecting plate (6) is provided with the measuring arm (8), the front end of the measuring arm (8) is provided with the mounting seat (9), the front side of the mounting seat (9) is provided with the probe (10).

2. The automatic measuring device for axial control of a crankshaft grinding machine according to claim 1, characterized in that: The top of the bottom plate (1) is installed with a base plate (11), the top of the base plate (11) is installed with a shaft sleeve (12), the transmission shaft (13) penetrates through the shaft sleeve (12), the side surface of the first rotating arm (5) and the second rotating arm (7) close to the shaft sleeve (12) is provided with a taper sleeve (14), and the transmission shaft (13) is rotatably connected with the taper sleeve (14).

3. An automatic measuring device for axial control of a crankshaft grinding machine according to claim 2, characterized in that: The inside of the shaft sleeve (12) is installed with bearings (15) at both ends, and the inner ring surface of the bearing (15) is connected with the outside of the transmission shaft (13).

4. The automatic measuring device for axial control of a crankshaft grinding machine according to claim 2, characterized in that: The left and right ends of the shaft sleeve (12) are installed with compression rings (16), the inside of the compression ring (16) is provided with a sealing ring (18), and the transmission shaft (13) is provided with a bushing (17) corresponding to the position of the sealing ring (18).

5. The automatic measuring device for axial control of a crankshaft grinding machine according to claim 2, characterized in that: The left positions of the front and rear sides of the shaft sleeve (12) are installed with mounting frames (19), the left end of the mounting frame (19) is provided with a proximity switch (20), and the right side of the second rotating arm (7) is installed with an induction block (21).

6. An automatic measuring device for axial control of a crankshaft grinding machine according to claim 1, characterized in that: The top of the bottom plate (1) is installed with two symmetrical fixed seats (22) at the rear position, and the front end of the fixed seat (22) is installed with a buffer (23).

7. The automatic measuring device for axial control of crankshaft grinding machine according to claim 1, characterized in that: The fixed component includes a first fixed plate (201), a second fixed plate (202) and a fastening bolt (203); the top of the bottom plate (1) is installed with the first fixed plate (201) at the right position, the top of the first fixed plate (201) is installed with the second fixed plate (202) at the left position, the top of the first fixed plate (201) is provided with the fastening bolt (203) at the four corner positions, and the right side of the second fixed plate (202) is connected with the left side of the hydraulic rotary motor (3).

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