Camshaft error measuring device for diesel cam machining

Abstract

The utility model relates to measuring device technical field, concretely is camshaft error measuring device for diesel engine cam machining, including the fixed frame, the outside fixed connection of fixed frame has the support frame, the outside of support frame is provided with cleaning component, the cleaning component includes with the fixed connection of support frame inner wall side surface air pump, the output fixed connection gas pipe of air pump, the one end fixed connection of gas pipe away from air pump has the gas distribution pipe of intercommunication, the outside of gas distribution pipe is provided with a gap. In the utility model, through the setting of cleaning component, the output end of the dial gauge is cleaned effectively, the dial gauge output end is kept clean, the accuracy of detection is reduced by dust, and through the setting of accurate measuring assembly, a forward pressure (pre-pressing) is applied in advance, can guarantee in whole measurement process, the measuring head can always be close to camshaft surface, will not produce the jumping or the error reading because of the instantaneous separation.

Description

Technical Field

[0001] This utility model relates to the field of measuring device technology, and in particular to a camshaft error measuring device for diesel engine cam machining. Background Technology

[0002] The main function of a diesel engine camshaft is to control the opening and closing of the valves. Through its own rotation, it drives components such as valve tappets, pushrods, and rocker arms, causing the valves to reciprocate linearly according to a specific rhythm and pattern. This ensures that the cylinders intake and exhaust air at the appropriate times, guaranteeing smooth engine operation and efficient fuel utilization.

[0003] A camshaft profile inspection device, authorized under publication number CN220741076U, belongs to the field of camshaft inspection technology. It addresses the technical problem of low efficiency in existing camshaft equipment when switching between camshaft inspections. This invention includes a bracket, a dial, and a handle. The top of the bracket has a mounting groove, within which two spaced-apart support blocks for mounting the camshaft are slidably installed. The camshaft is slidably connected to the support blocks. The dial and handle are mounted on one end of the camshaft. The bracket has pointers corresponding to the dial and a fixed frame for mounting a dial indicator. The bracket is mounted on a workbench. The support blocks can slide and adjust on the bracket and are replaceable to adapt to the testing needs of camshafts with different diameters. The dial, mounted on one end of the camshaft, rotates with the camshaft, indicating the rotation angle. The handle allows for easy rotation of the camshaft, and the fixed frame's height can be easily adjusted via an electric push rod.

[0004] Regarding the aforementioned technologies, the existing measuring devices have the following drawbacks: even if micron-sized dust, chips, or oil adheres to the probe, a "shim" will form between the probe and the cam surface. When the probe is pressed down, this shim will be compressed, causing the dial indicator reading to be too large and introducing systematic errors. Therefore, this utility model provides a camshaft error measuring device for diesel engine cam machining. Utility Model Content

[0005] The purpose of this application is to provide a camshaft error measuring device for diesel engine cam machining, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a camshaft error measuring device for diesel engine cam machining, comprising a fixed frame, a support frame fixedly connected to the outer side of the fixed frame, and a cleaning component disposed on the outer side of the support frame; the cleaning component includes an air pump fixedly connected to the inner wall side of the support frame, an air supply pipe fixedly connected to the output end of the air pump, a communicating air distribution pipe fixedly connected to the end of the air supply pipe away from the air pump, a notch opened on the outer side of the air distribution pipe, multiple air jet pipes fixedly connected to the inner wall side of the air distribution pipe, a fixing rod fixedly connected to the inner wall side of the support frame, and a fixing rod fixedly connected to the air distribution pipe at the end away from the support frame; and a precision measuring component disposed inside the fixed frame.

[0007] Preferably, the precision measuring component includes a slider disposed within a fixed frame, a hydraulic push rod fixedly connected to the outer side of the slider, a fixed block fixedly connected to the output end of the hydraulic push rod, and a dial indicator disposed on the outer side of the fixed block.

[0008] Preferably, a threaded rod is rotatably connected to the inner wall side of the fixing frame, and the threaded rod is threadedly connected to the slider.

[0009] Preferably, a motor is fixedly connected to the outside of the fixing frame, the output end of the motor passes through the fixing frame, and the output end of the motor is fixedly connected to the threaded rod.

[0010] Preferably, a guide rod is fixedly connected to the inner wall side of the fixing frame, the guide rod passes through the slider, and a protective cover adapted to the slider is fixedly connected to the inner wall side of the fixing frame.

[0011] Preferably, a connecting plate is fixedly connected to the outer side of the fixing frame, and a positioning frame is fixedly connected to the end of the connecting plate away from the fixing frame. Both ends of the positioning frame are provided with slots.

[0012] A cylinder is installed through both sides of the inner wall of the empty slot. The output end of the cylinder is fixedly connected to a mounting block, and a clamping plate is fixedly connected to the outer side of the mounting block.

[0013] In summary, the technical effects and advantages of this utility model are as follows: In this invention, the cleaning component facilitates effective cleaning of the dial indicator's output end, keeping it clean and reducing the impact of dust on the accuracy of the measurement. Furthermore, the precision measurement component allows for the pre-application of a positive pressure, ensuring that the probe remains in close contact with the camshaft surface throughout the measurement process, preventing jumps or erroneous readings caused by momentary detachment. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a first-view axial side view structural diagram of the present invention; Figure 2 This is a schematic diagram of the second-view axial side structure of this utility model; Figure 3 This is a schematic diagram of the air distribution pipe and the jet pipe in this utility model; Figure 4 for Figure 2 A magnified structural diagram at point A.

[0016] In the diagram: 1. Fixing frame; 2. Connecting plate; 3. Positioning frame; 4. Motor; 5. Protective cover; 6. Threaded rod; 7. Slider; 8. Hydraulic push rod; 9. Fixing block; 10. Dial indicator; 11. Guide rod; 12. Support frame; 13. Air pump; 14. Air supply pipe; 15. Air distribution pipe; 16. Air jet pipe; 17. Fixing rod; 18. Empty slot; 19. Cylinder; 20. Mounting block; 21. Clamping plate. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0018] In the description of this utility model, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the terms according to the specific circumstances.

[0019] Example 1: Reference Figure 1-4The camshaft error measuring device for diesel engine camshaft machining shown includes a mounting frame 1 for supporting and fixing the various components of the device. A support frame 12 for mounting and supporting a cleaning component is fixedly connected to the outer side of the mounting frame 1. A cleaning component is provided on the outer side of the support frame 12 to remove oil stains, iron filings, and other impurities from the camshaft surface to avoid affecting the measurement accuracy. The cleaning component includes an air pump 13 that provides high-pressure airflow power and is fixedly connected to the inner wall of the support frame 12. An air supply pipe 14 for delivering high-pressure airflow is fixedly connected to the output end of the air pump 13. An air distribution pipe 15 that evenly distributes airflow to each jet pipe is fixedly connected to the end of the air supply pipe 14 away from the air pump 13. A notch is provided on the outer side of the air distribution pipe 15 to facilitate the movement of the dial gauge 10. Multiple jet pipes 16 that directionally spray high-pressure airflow onto the camshaft surface are fixedly connected to the inner wall of the air distribution pipe 15. A fixed rod 17 is fixedly connected to the side to reinforce and support the air distribution pipe and prevent it from shifting under the action of airflow. The end of the fixed rod 17 away from the support frame 12 is fixedly connected to the air distribution pipe 15. A precision measuring component for accurately detecting the camshaft profile error is set inside the fixed frame 1. The precision measuring component includes a slider 7 set inside the fixed frame 1 that can slide along the threaded rod to drive the measuring component to adjust its position. A hydraulic push rod 8 that drives the fixed block and dial indicator to move closer to or away from the camshaft is fixedly connected to the outside of the slider 7. A fixed block 9 for mounting and fixing the dial indicator is fixedly connected to the output end of the hydraulic push rod 8. A dial indicator 10 that directly contacts the camshaft surface and converts the profile deviation into a reading display is set on the outside of the fixed block 9. A threaded rod 6 is rotatably connected to the inner wall side of the fixed frame 1, which drives the slider to move along its axial direction by rotation to realize the adjustment of the measurement position. The threaded rod 6 is threadedly connected to the slider 7.

[0020] Example 2: Reference Figure 1-4Based on the same concept as Embodiment 1 above, this embodiment further proposes that the fixed frame 1 serves as the supporting foundation of the overall structure, providing an installation carrier and positioning reference for each component. A motor 4 is fixedly connected to its outer side. The motor 4 is the power source of the device, converting electrical energy into mechanical energy. The output end of the motor 4 passes through the fixed frame 1 and is fixedly connected to the threaded rod 6, driving the threaded rod 6 to rotate synchronously. A guide rod 11 is fixedly connected to the inner wall of the fixed frame 1. The guide rod 11 restricts the movement trajectory of the slider 7, preventing it from deviating. The guide rod 11 passes through the slider 7. A protective cover 5 adapted to the slider 7 is fixedly connected to the inner wall of the fixed frame 1. The protective cover 5 prevents impurities from entering the movement area of ​​the slider 7, providing protection. A connecting... Plate 2, connecting plate 2 is used to connect the fixed frame 1 and the positioning frame 3 to realize the transmission of force and structural connection. The end of the connecting plate 2 away from the fixed frame 1 is fixedly connected to the positioning frame 3. The positioning frame 3 provides a space for the placement and positioning of the workpiece to be clamped. Both ends of the positioning frame 3 are provided with slots 18, which provide installation and movement space for the cylinder 19 and the mounting block 20. The inner walls of the slots 18 are provided with cylinders 19 through both sides. The cylinders 19 can convert air pressure energy into linear motion mechanical energy to realize extension and retraction. The output end of the cylinder 19 is fixedly connected to the mounting block 20. The mounting block 20 is used to connect the cylinder 19 and the clamping plate 21 to transmit driving force. The outer side of the mounting block 20 is fixedly connected to the clamping plate 21. The clamping plate 21 can clamp the workpiece under the drive of the cylinder 19 to achieve the positioning and fixing effect.

[0021] The working principle of this utility model is as follows: The workpiece is placed in a pair of empty slots 18. Multiple cylinders 19 are controlled to move the mounting block 20 and clamping plate 21 to clamp and fix the workpiece. The motor 4 drives the threaded rod 6 to rotate, which in turn drives the hydraulic push rod 8, fixing block 9, and dial indicator 10 through the slider 7. This causes the dial indicator 10 to move into the air distribution pipe 15. The air pump 13 cleans the output end of the dial indicator 10 through the air delivery pipe 14, air distribution pipe 15, and multiple air jet pipes 16, keeping the output end of the dial indicator 10 clean. The motor 4 is then controlled to rotate... The dial indicator 10 moves to the position corresponding to the part of the workpiece that needs to be inspected. The hydraulic push rod 8 is controlled to drive the fixed block 9 and the dial indicator 10 to move. The workpiece is first squeezed through the output end until it rotates half a turn. There may be a small backlash in the transmission mechanism inside the dial indicator 10. By applying a positive pressure (pre-pressure) in advance, it can be ensured that the probe can always be in close contact with the cam surface during the entire measurement process (especially when the cam turns from the base circle to the lift section), and will not jump or make erroneous readings due to instantaneous disengagement. This ensures the continuity of measurement data.

[0022] The above descriptions are merely some embodiments of this utility model. It should be noted that those skilled in the art can make other modifications and improvements without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A camshaft error measuring device for diesel engine cam machining, comprising a fixed frame (1), characterized in that: A support frame (12) is fixedly connected to the outside of the fixed frame (1), and a cleaning component is provided on the outside of the support frame (12); The cleaning assembly includes an air pump (13) fixedly connected to the inner wall side of the support frame (12). The output end of the air pump (13) is fixedly connected to an air supply pipe (14). The end of the air supply pipe (14) away from the air pump (13) is fixedly connected to a communicating air distribution pipe (15). A notch is opened on the outer side of the air distribution pipe (15). Multiple jet pipes (16) are fixedly connected to the inner wall side of the air distribution pipe (15). A fixing rod (17) is fixedly connected to the inner wall side of the support frame (12). The end of the fixing rod (17) away from the support frame (12) is fixedly connected to the air distribution pipe (15). A precision measuring assembly is provided inside the fixing frame (1).

2. The camshaft error measuring device for diesel engine cam machining according to claim 1, characterized in that: The precision measurement component includes a slider (7) set in a fixed frame (1), a hydraulic push rod (8) fixedly connected to the outside of the slider (7), a fixed block (9) fixedly connected to the output end of the hydraulic push rod (8), and a dial indicator (10) set on the outside of the fixed block (9).

3. The camshaft error measuring device for diesel engine cam machining according to claim 2, characterized in that: The inner wall side of the fixed frame (1) is rotatably connected to a threaded rod (6), and the threaded rod (6) is threadedly connected to the slider (7).

4. The camshaft error measuring device for diesel engine cam machining according to claim 3, characterized in that: A motor (4) is fixedly connected to the outside of the fixed frame (1), the output end of the motor (4) passes through the fixed frame (1), and the output end of the motor (4) is fixedly connected to the threaded rod (6).

5. The camshaft error measuring device for diesel engine cam machining according to claim 4, characterized in that: A guide rod (11) is fixedly connected to the inner wall side of the fixed frame (1), the guide rod (11) passes through the slider (7), and a protective cover (5) adapted to the slider (7) is fixedly connected to the inner wall side of the fixed frame (1).

6. The camshaft error measuring device for diesel engine cam machining according to claim 5, characterized in that: A connecting plate (2) is fixedly connected to the outside of the fixed frame (1), and a positioning frame (3) is fixedly connected to the end of the connecting plate (2) away from the fixed frame (1). Both ends of the positioning frame (3) are provided with slots (18).

7. The camshaft error measuring device for diesel engine cam machining according to claim 6, characterized in that: A cylinder (19) is provided through both sides of the inner wall of the empty slot (18). The output end of the cylinder (19) is fixedly connected to a mounting block (20), and a clamping plate (21) is fixedly connected to the outer side of the mounting block (20).

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