Center distance detection device for crank shaft

Abstract

The utility model relates to a crank shaft center distance detection device, which belongs to the field of detection and comprises a bottom plate, a front sliding component, a middle fixing component and a rear fixing component, and the front sliding component, the middle fixing component and the rear fixing component are sequentially mounted on the bottom plate from front to back. A positioning space for the front portion of the crank shaft is formed between the rear fixing assembly and the middle fixing assembly, and a positioning space for the rear portion of the crank shaft is formed between the front sliding assembly and the middle fixing assembly. The crank shaft center distance detection device has the advantages that when the crank shaft center distance is detected, rapid detection is realized through the positioning pin, the crank shaft center distance detection device is simple and accurate in detection, the labor intensity is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a device for detecting the center distance of a crankshaft, belonging to the field of detection. Background Art

[0002] The center distance of the crankshaft needs to be detected when it is in use. The existing auxiliary device for detecting the center distance of the crankshaft is a dividing head. The straight handle of the crankshaft is clamped on the three-jaw chuck of the dividing head. Through multiple measurements with a ruler and a height gauge and multiple adjustments with the dividing head, ensure that the two center lines of the product are in the same orthogonal plane. After the height of the straight handle of the crankshaft is consistent at the same diameter position, use a height gauge to measure the highest point of the outer circle of the straight handle of the crankshaft and the outer circle of the crank of the crankshaft on the same platform, obtain the height difference, and calculate the size of the center distance.

[0003] The disadvantages of this test are:

[0004] 1. Use a bend ruler, height gauge and dividing head to align the bend axis so that the two axes are in the same orthogonal plane. The process is relatively complicated and the adjustment and operation are inconvenient;

[0005] 2. Using the height difference to calculate the center distance will result in cumulative errors due to multiple measurements;

[0006] 3. The measurement efficiency is relatively low. Utility Model Content

[0007] In order to overcome the defects of the prior art, the utility model provides a device for detecting the center distance of a turning axis. The technical solution of the utility model is:

[0008] A device for detecting the center distance of a turning shaft, comprising a base plate, a front sliding assembly, a middle fixing assembly and a rear fixing assembly, on which the front sliding assembly, the middle fixing assembly and the rear fixing assembly are sequentially installed from front to back, a positioning space for the front part of the turning shaft is formed between the rear fixing assembly and the middle fixing assembly, and a positioning space for the rear part of the turning shaft is formed between the front sliding assembly and the middle fixing assembly; the front sliding assembly comprises a slider, a linear rail, a front bracket plate and a front bracket plate sleeve, on which the linear rail is installed along the length direction of the base plate, the slider is installed on the linear rail and slidably cooperates with the linear rail, a front bracket plate arranged in a vertical direction is installed on the slider, the lower end of the front bracket plate is installed on the slider, and a front bracket plate sleeve for the end of the turning shaft to pass through is installed on the front bracket plate.

[0009] One end of the linear rail is mounted on the base plate, and the other end extends to the outside of the base plate. A limiting bolt is vertically mounted near the other end of the linear rail, and the limiting bolt is used to limit the moving position of the slider.

[0010] The middle fixing assembly includes a middle bracket plate, a middle bracket plate sleeve, a positioning pin and a clamping assembly. The middle bracket plate is vertically installed on the base plate. A middle bracket plate sleeve for the middle part of the turning shaft to pass through is installed on the upper part of the middle bracket plate. A positioning pin is slidably installed on the middle bracket plate under the middle bracket plate sleeve, and the positioning pin passes through the middle bracket plate; the clamping assembly is installed on the upper part of the middle bracket plate and close to one side of the front bracket plate.

[0011] The clamping assembly includes a fixed plate pin and a fixed plate. The fixed plate pin is installed on the middle bracket plate. One end of the fixed plate is rotatably installed on the fixed plate pin, and the other end forms a clamping end, which movably cooperates with the crooked shaft to clamp or move away from the crooked shaft.

[0012] The rear fixing assembly comprises a rear support plate and a rear support plate sleeve. The rear support plate is vertically mounted on the bottom plate, and a rear support plate sleeve for the end of the crank shaft to pass through is mounted on the upper part of the rear support plate.

[0013] A limit plate is installed on the bottom plate between the rear bracket plate and the middle bracket plate, and the limit plate is installed on the bottom plate through bolts.

[0014] The height of the middle support plate is higher than that of the rear support plate, and the height of the rear support plate is higher than that of the front support plate.

[0015] The lower end of the front bracket plate is bent to form a bent section, and the bent section is installed on the sliding block through bolts.

[0016] A linear rail installation groove is provided on the bottom plate, and the linear rail is installed in the middle of the linear rail installation groove by bolts.

[0017] The utility model has the advantages that when the center distance of the turning shaft is detected, rapid detection can be achieved through the positioning pin, and the detection is simple and accurate, thereby reducing labor intensity and improving production efficiency.

[0018] High positioning accuracy: The front sliding assembly, the middle fixed assembly and the rear fixed assembly can accurately position the turning axis to ensure the accuracy of measurement.

[0019] Flexibility: The sliding design of the front sliding assembly allows the device to adapt to different lengths of axles, increasing its applicability.

[0020] Stability: The use of linear rails provides smooth sliding performance and reduces errors caused by unstable sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0022] Figure 2 yes Figure 1 main view.

[0023] Figure 3 yes Figure 1 Left view of .

[0024] Figure 4 yes Figure 1 Top view of the .

[0025] Figure 5 It is a schematic diagram of the use state of the utility model.

[0026] Figure 6 yes Figure 5 Left view of .

[0027] Figure 7 yes Figure 5 Top view of the . DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with specific embodiments, and the advantages and features of the present invention will become clearer as the description proceeds. However, these embodiments are merely exemplary and do not constitute any limitation to the scope of the present invention. It should be understood by those skilled in the art that the details and forms of the technical solution of the present invention may be modified or replaced without departing from the spirit and scope of the present invention, but these modifications and replacements fall within the scope of protection of the present invention.

[0029] See also Figures 1 to 7 The utility model relates to a device for detecting the center distance of a turning shaft, comprising a base plate 14, a front sliding assembly, a middle fixing assembly and a rear fixing assembly, on which the front sliding assembly, the middle fixing assembly and the rear fixing assembly are sequentially installed from front to back, a positioning space for the front part of the turning shaft is formed between the rear fixing assembly and the middle fixing assembly, and a positioning space for the rear part of the turning shaft is formed between the front sliding assembly and the middle fixing assembly; the front sliding assembly comprises a slider 16, a linear rail 1, a front bracket plate 2 and a front bracket plate sleeve 3, on the base plate 14, the linear rail 1 is installed along the length direction of the base plate 14, the slider 16 is installed on the linear rail 1, and slides with the linear rail 1, a front bracket plate 2 arranged in a vertical direction is installed on the slider 16, the lower end of the front bracket plate 2 is installed on the slider 16, and a front bracket plate sleeve 3 for the end of the turning shaft to pass through is installed on the front bracket plate 2.

[0030] One end of the linear rail 1 is mounted on the base plate 14 , and the other end extends to the outside of the base plate 14 . A limiting bolt is vertically installed near the other end of the linear rail 1 , and the limiting bolt is used to limit the moving position of the slider 16 .

[0031] The lower end of the front bracket plate 2 is bent to form a bent section, and the bent section is mounted on the slider 16 by bolts.

[0032] A linear rail installation groove is provided on the bottom plate 14, and the linear rail 1 is installed in the middle of the linear rail installation groove by means of bolts.

[0033] Based on the above-mentioned structure of the utility model, the following is achieved:

[0034] Precise positioning: By setting the linear rail 1 on the bottom plate 14 and sliding the slider 16 along the linear rail 1, the position of the front sliding component can be accurately controlled, thereby achieving precise positioning of the rear of the crank shaft.

[0035] Flexibility: The sliding fit design of the slider 16 allows the device to adapt to different lengths of the crankshaft, increasing its flexibility and applicability.

[0036] Stability: The use of the linear guide 1 provides a smooth sliding performance, reduces the error caused by unstable sliding, and ensures the stability of the measurement.

[0037] Limit function: The design of the limit bolt can prevent the slider 16 from exceeding the predetermined position, ensuring safety and accuracy during the measurement process.

[0038] Easy to operate: The design of the front bracket plate 2 and the front bracket plate sleeve 3 makes the installation and fixation of the end of the bending shaft simple and quick.

[0039] The middle fixing assembly includes a middle bracket plate 4, a middle bracket plate sleeve 5, a positioning pin 6 and a clamping assembly. The middle bracket plate 4 is vertically installed on the base plate 14. A middle bracket plate sleeve 5 for the middle part of the turning shaft to pass through is installed on the upper part of the middle bracket plate 4. A positioning pin 6 is slidably installed on the middle bracket plate 4 at the lower part of the middle bracket plate sleeve 5. The positioning pin 6 passes through the middle bracket plate 4; the clamping assembly is installed on the upper part of the middle bracket plate 4 and close to one side of the front bracket plate 2.

[0040] The clamping assembly includes a fixed plate pin 10 and a fixed plate 9. The fixed plate pin 10 is installed on the middle bracket plate 4. One end of the fixed plate 9 is rotatably installed on the fixed plate pin 10, and the other end forms a clamping end, which movably cooperates with the crooked shaft to clamp or move away from the crooked shaft.

[0041] Based on the setting of the middle fixing assembly of the utility model, the following are achieved:

[0042] Precise positioning: The middle bracket plate 4 is vertically mounted on the bottom plate 14, and cooperates with the middle bracket plate sleeve 5 to accurately locate the middle of the crankshaft to ensure the accuracy of the measurement.

[0043] Stability: The positioning pin 6 passes through the middle bracket plate 4, which is convenient for detection;

[0044] Flexibility: The design of the clamping assembly allows the elbow to be clamped or loosened. During measurement, the clamping is performed through the fixing plate; after the measurement is completed, the fixing plate is moved away from the elbow.

[0045] Safety: The design of the fixing plate 9 allows the crankshaft to be safely fixed or loosened during the measurement process, reducing operational risks.

[0046] The rear fixing assembly includes a rear support plate 7 and a rear support plate sleeve 8. The rear support plate 7 is vertically mounted on the bottom plate 14. The rear support plate sleeve 8 for the end of the crank shaft to pass through is mounted on the upper portion of the rear support plate 7.

[0047] A limit plate 11 is installed on the bottom plate 14 between the rear support plate 7 and the middle support plate 4 , and the limit plate 11 is installed on the bottom plate 14 by bolts.

[0048] The arrangement of the rear fixing assembly realizes:

[0049] Precise positioning: The rear bracket plate 7 is vertically mounted on the bottom plate 14, and cooperates with the rear bracket plate sleeve 8 to accurately position the rear end of the crankshaft to ensure the accuracy of the measurement.

[0050] Stability: The vertical mounting of the rear support plate 7 provides a stable support, reducing errors during measurement.

[0051] Flexibility: The rear bracket plate sleeve 8 allows the end of the crank shaft to pass through, adapting to crank shafts of different sizes, thereby increasing the applicability of the equipment.

[0052] Compact structure: The design between the rear support plate 7 and the middle support plate 4 makes the entire detection device compact and space-saving.

[0053] The height of the middle bracket plate 4 is higher than that of the rear bracket plate 7, and the height of the rear bracket plate 7 is higher than that of the front bracket plate 2, so as to adapt to the shape of the turning shaft.

[0054] The working principle of the utility model is:

[0055] Preparation: According to different products, select different models of front bracket plate sleeve 3, middle bracket plate sleeve 5 and rear bracket plate sleeve 8, and install them on the front bracket plate 2, middle bracket plate 4 and rear bracket plate 7 respectively; move the front bracket plate 2 outward, away from the middle bracket plate 4, install a part of the turning shaft on the front bracket plate sleeve 3 and the middle bracket plate sleeve 5, push the front bracket plate 2 toward the middle bracket plate, and fix the turning shaft with a fixing plate; you can also install an adjusting positioning bolt on the slider 16, and when the position of the slider 16 is determined, tighten the adjusting positioning bolt until the adjusting positioning bolt is tight against the linear rail.

[0056] Inspection: Insert the locating pin into the locating hole of the crank shaft. If it can be inserted, it means that the center distance of the crank shaft is within the required range and the product is qualified. If the locating pin cannot be inserted, the center distance of the product exceeds the required range. After calculating the deviation of the center distance, adjust the CNC program on the machine tool to achieve the purpose of fast and accurate adjustment, avoiding the use of other uncertain detection methods, causing misjudgment and batch quality problems.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for detecting the center distance of a crankshaft, characterized in that: It includes a base plate, a front sliding assembly, a middle fixed assembly and a rear fixed assembly, on which the front sliding assembly, the middle fixed assembly and the rear fixed assembly are installed in sequence from front to back, a positioning space for the front of the turning shaft is formed between the rear fixed assembly and the middle fixed assembly, and a positioning space for the rear of the turning shaft is formed between the front sliding assembly and the middle fixed assembly; the front sliding assembly includes a slider, a linear rail, a front bracket plate and a front bracket plate sleeve, on which the linear rail is installed along the length direction of the base plate, the slider is installed on the linear rail and slidably cooperates with the linear rail, a front bracket plate arranged in a vertical direction is installed on the slider, the lower end of the front bracket plate is installed on the slider, and a front bracket plate sleeve for the end of the turning shaft to pass through is installed on the front bracket plate.

2. The device for detecting the center distance of a crankshaft according to claim 1, characterized in that: One end of the linear rail is mounted on the base plate, and the other end extends to the outside of the base plate. A limiting bolt is vertically mounted near the other end of the linear rail, and the limiting bolt is used to limit the moving position of the slider.

3. The turning axis center distance detection device according to claim 1 or 2, characterized in that: The middle fixing assembly includes a middle bracket plate, a middle bracket plate sleeve, a positioning pin and a clamping assembly. The middle bracket plate is vertically installed on the base plate. A middle bracket plate sleeve for the middle part of the turning shaft to pass through is installed on the upper part of the middle bracket plate. A positioning pin is slidably installed on the middle bracket plate under the middle bracket plate sleeve, and the positioning pin passes through the middle bracket plate; the clamping assembly is installed on the upper part of the middle bracket plate and close to one side of the front bracket plate.

4. The device for detecting the center distance of a crankshaft according to claim 3, characterized in that: The clamping assembly includes a fixed plate pin and a fixed plate. The fixed plate pin is installed on the middle bracket plate. One end of the fixed plate is rotatably installed on the fixed plate pin, and the other end forms a clamping end, which movably cooperates with the crooked shaft to clamp or move away from the crooked shaft.

5. The device for detecting the center distance of a crankshaft according to claim 4, characterized in that: The rear fixing assembly comprises a rear support plate and a rear support plate sleeve. The rear support plate is vertically mounted on the bottom plate, and a rear support plate sleeve for the end of the crank shaft to pass through is mounted on the upper part of the rear support plate.

6. The device for detecting the center distance of the turning axis according to claim 5, characterized in that: A limit plate is installed on the bottom plate between the rear bracket plate and the middle bracket plate, and the limit plate is installed on the bottom plate through bolts.

7. The device for detecting the center distance of the turning axis according to claim 6, characterized in that: The height of the middle support plate is higher than that of the rear support plate, and the height of the rear support plate is higher than that of the front support plate.

8. The device for detecting the center distance of the turning axis according to claim 3, characterized in that: The lower end of the front bracket plate is bent to form a bent section, and the bent section is installed on the sliding block through bolts.

9. The device for detecting the center distance of a crankshaft according to claim 3, characterized in that: A linear rail installation groove is provided on the bottom plate, and the linear rail is installed in the middle of the linear rail installation groove by bolts.

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