Crankshaft end face runout detection device

Abstract

The utility model discloses a crankshaft end face runout detection device. The device comprises a pedestal; the positioning assembly is arranged on the base and used for placing the crankshaft; the driving assembly is used for driving the crankshaft, and the positioning assembly can move in the height direction of the base so that a connecting rod neck of the crankshaft and an output shaft of the driving assembly can be coaxial. The detection assembly detects end face run-out values of the connecting rod neck and the main journal; at least one of the detection assembly and the positioning assembly can move in the length direction of the base so as to change the axial position of the detection assembly relative to the crankshaft. At least one of the detection assembly and the positioning assembly can move in the width direction of the base so as to change the radial position of the detection assembly relative to the connecting rod neck end face or the main journal end face of the crankshaft. Axis adjustment and alignment during detection of runout of the end face of the connecting rod neck are achieved through movement of the positioning assembly, total runout value detection of the end face of the main journal and the end face of the connecting rod neck is achieved through movement of the detection assembly and the positioning assembly, and the effect that the runout of the end faces of the main journal and the connecting rod neck can be detected through the same detection device is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft inspection equipment, and more specifically to a crankshaft end face runout detection device. Background Art

[0002] Motorcycle engines use multi-cylinder integral crankshafts. In order to ensure the smooth operation of automobile engine crankshafts, it is necessary to test the various technical parameters of the crankshaft in advance, such as the runout value of the crankshaft end face relative to the crankshaft axis, to confirm whether the runout value meets the design standard value. If it exceeds the standard value, the crankshaft will be unqualified.

[0003] In the related art, for the runout of the crankshaft end face, special measuring instruments are often used to detect the radial runout and end face runout of the main journal, but the runout of the connecting rod neck end face cannot be detected on the production line, affecting the crankshaft processing and qualification rate detection process.

[0004] In summary, how to provide a device that can detect the end face runout of the main journal and the connecting rod journal on a production line is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a crankshaft end face runout detection device, which can realize the end face detection of the crankshaft in daily production. Specifically, the same detection device can realize the end face runout detection of the connecting rod neck and the main shaft neck, and can be applied to the runout detection of different types of crankshafts. The debugging is simple and convenient, and the applicability is strong.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A crankshaft end face runout detection device, comprising:

[0008] base;

[0009] a positioning assembly, disposed on the base and used for placing the crankshaft;

[0010] a drive assembly for driving the crankshaft, wherein the positioning assembly is movable along the height direction of the base so as to make the connecting rod neck of the crankshaft and the output shaft of the drive assembly coaxial;

[0011] A detection component, used for detecting the end face runout value of the connecting rod neck and the main shaft neck;

[0012] At least one of the detection assembly and the positioning assembly is movable along the length direction of the base to change the axial position of the detection assembly relative to the crankshaft;

[0013] At least one of the detection assembly and the positioning assembly is movable along the width direction of the base to change a radial position of the detection assembly relative to a connecting rod journal end surface or a main journal end surface of the crankshaft.

[0014] Preferably, the detection component includes:

[0015] A guide rail, provided on the base;

[0016] A magnetic meter stand, slidably connected to the guide rail via a fixing plate;

[0017] a lever gauge connected to the magnetic gauge base and used to contact the end faces of the connecting rod neck and the main shaft neck for measurement;

[0018] A moving member is connected to the fixed plate to realize its movement on the guide rail, so as to change the radial position of the lever gauge relative to the end face of the connecting rod neck and the end face of the main shaft neck.

[0019] Preferably, the moving part includes:

[0020] Wheel;

[0021] a gear, rotatably connected to the fixed plate and connected to the rotating wheel;

[0022] A rack is meshed with the gear and is arranged parallel to the guide rail. The rotating wheel rotates to realize the movement of the gear relative to the rack, so that the magnetic meter base moves along the guide rail.

[0023] Preferably, the drive assembly includes:

[0024] a motor, disposed on the base;

[0025] a shaft sleeve, connecting the positioning assembly and the motor;

[0026] a transmission member, one end of which is sleeved on the shaft sleeve, and the other end of which is sleeved on the output wheel of the motor, wherein the motor drives the positioning assembly through the shaft sleeve to rotate the crankshaft;

[0027] A switch component is provided on the motor and is used to control the start and stop of the motor.

[0028] Preferably, the positioning component includes:

[0029] A fixed seat, movably arranged on the base;

[0030] A V-shaped block connected to the fixing seat and used to support the crankshaft;

[0031] A locking member is connected to the fixing seat and is used for clamping or loosening the crankshaft on the V-shaped block.

[0032] Preferably, a slide rail and a slide block are provided between the shaft sleeve and the positioning assembly, and the slide rail is provided along the height direction of the base;

[0033] One side of the sliding block is connected to the fixed seat, and the other side of the sliding block is slidably connected to the slide rail. The sliding of the sliding block is used to achieve the coaxiality of the connecting rod neck axis and the shaft sleeve.

[0034] Preferably, the shaft sleeve is axially connected to an adjustment seat, and the adjustment seat is connected to an adjustment screw, which is arranged along the radial direction of the shaft sleeve. The adjustment screw can be rotated to change the depth of its insertion into the fixing seat to change the height of the fixing seat.

[0035] Preferably, an adjustment rail is provided in the length direction of the base, the adjustment rail is slidably connected to the workbench bottom plate, the workbench bottom plate is connected to the positioning assembly, and the sliding of the workbench bottom plate is used to change the axial position of the detection assembly relative to the crankshaft;

[0036] The workbench bottom plate is slidably connected to a support, and a bearing rotatably connected to the shaft sleeve is provided in the support. The support can slide on the workbench bottom plate to change the distance between the corresponding positioning components at both ends of the crankshaft.

[0037] Preferably, the inner ring of the bearing abuts against the shoulder of the sleeve, and the outer ring of the bearing abuts against the stepped hole in the support to limit the axial movement of the rear end face of the bearing;

[0038] A first mounting groove is provided on one side of the shaft sleeve where the shaft shoulder is provided, and a first elastic washer is provided in the first mounting groove;

[0039] A second mounting groove is also provided on one side of the support where the stepped hole is provided. A second elastic washer is provided in the second mounting groove. Both the first elastic washer and the second elastic washer abut against the front end surface of the bearing to limit axial movement.

[0040] Preferably, a locking device is further provided between the base and the workbench bottom plate, and the locking device is used to lock or unlock the workbench bottom plate.

[0041] The crankshaft end face runout detection device provided by the present invention comprises a base, a positioning assembly, a driving assembly, and a detection assembly, wherein the positioning assembly is arranged on the base and is used to place the crankshaft, and the driving assembly is used to drive the crankshaft to rotate so as to perform an end face runout detection test; the detection assembly is used to detect the runout values of the connecting rod neck end face and the main journal end face of the crankshaft; further, at least one of the detection assembly and the positioning assembly can be moved along the length direction of the base to realize the change of the axial position of the detection assembly relative to the crankshaft, that is, through this movement, the detection assembly can be switched to contact the connecting rod neck end face or the main journal end face; further, at least one of the detection assembly and the positioning assembly can be moved along the width direction of the base to change the radial position of the detection assembly in contact with the main journal end face, so as to realize the detection of the full runout value of the main journal end face; or, at least one of the detection assembly and the positioning assembly can be moved along the width direction of the base to change the radial position of the detection assembly in contact with the connecting rod neck end face, so as to realize the detection of the full runout value of the connecting rod neck end face;

[0042] In addition, when the connecting rod neck end face runout is detected by the detection component, the positioning component is moved along the height direction of the base so that the connecting rod neck and the output shaft of the drive component are coaxially arranged, and the connecting rod neck axis is adjusted to be on the center line of the output shaft of the drive component, thereby ensuring reliable and accurate detection of the connecting rod neck end face runout.

[0043] The beneficial effects of the present invention are as follows: by moving the positioning component along the height direction of the base, the axis adjustment and alignment when detecting the runout of the connecting rod neck end face can be realized; by moving either the detection component or the positioning component along the width and length directions of the base, the full runout value detection of the main shaft neck end face and the connecting rod neck end face can be realized, and the same detection device can detect the runout of the main shaft neck and the connecting rod neck end face. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0045] Figure 1 This is a schematic structural diagram of the crankshaft end face runout detection device provided by the present invention;

[0046] Figure 2 for Figure 1 A half-section view of

[0047] Figure 3 for Figure 1 Right view of;

[0048] Figure 4 for Figure 3 A partial schematic diagram of .

[0049] Figures 1-4 , the reference numerals include:

[0050] 01-Detection component; 02-Drive component;

[0051] 1-base; 2-adjustment rail; 3-workbench bottom plate; 4-first elastic washer; 5-second elastic washer; 6-support; 7-bearing; 8-sleeve; 9-sliding block; 10-fixed seat; 11-V-shaped block; 12-adjustment seat; 13-adjustment screw; 14-locking device; 15-fixed plate; 16-rack; 17-gear; 18-rotor; 19-lever gauge; 20-magnetic gauge base; 21-guide rail; 22-locking piece; 23-transmission piece; 24-motor; 25-crankshaft; 26-slide rail; 251-main shaft neck; 252-connecting rod neck. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0053] The core of the utility model is to provide a crankshaft end face runout detection device, which can realize the end face detection of the crankshaft in daily production. Specifically, the end face runout detection of the connecting rod neck and the main shaft neck is realized through a detection device, and it can be applied to the runout detection of different types of crankshafts. The detection is intuitive and the structure is simple, the debugging is simple and convenient, the operability is good, and the applicability is strong.

[0054] The crankshaft end face runout detection device provided by the utility model includes a base 1, a positioning component, a drive component 02, and a detection component 01. Please refer to Figure 2 .

[0055] The positioning assembly is provided on the base 1 and is used to place the crankshaft 25, specifically for placing the end of the crankshaft 25. The fixed support of each crankshaft 25 requires two sets of positioning assemblies. The crankshaft 25 is supported by the positioning assembly and can be rotated under the drive of the driving assembly 02. The crankshaft 25 can rotate automatically without manual operation, thereby reducing errors caused by human labor.

[0056] In a specific embodiment, the driving assembly 02 drives the crankshaft 25 through the positioning assembly, that is, the driving assembly 02 connects the positioning assembly and the crankshaft 25 to achieve synchronous rotation of the two.

[0057] In another specific embodiment, the driving assembly 02 drives the crankshaft 25 to rotate in the positioning assembly. The positioning assembly can be set to be fixed, and bearings and other components that facilitate rotation can be set between the crankshaft 25 and the positioning assembly.

[0058] The positioning assembly can move along the height direction of the base 1, that is, Figure 1 In the z-direction, the movement of the positioning assembly drives the movement of the crankshaft 25 in the height direction relative to the base 1 to change the relative position of the crankshaft 25 and the drive assembly 02. Specifically, the axis of the connecting rod neck 252 of the crankshaft 25 is made coaxial with the output shaft of the drive assembly 02, so that the axis of the connecting rod neck 252 is the axis of the rotation center of the output shaft of the drive assembly 02, so as to perform the end face runout detection test of the connecting rod neck 252.

[0059] In addition, the eccentricity of different types of crankshafts 25 is inconsistent. The eccentricity here is the difference between the axes of the connecting rod neck 252 and the main journal 251. Based on this, the positioning component can be moved along the height direction of the base 1, and the entire detection device can also be adapted to different types of crankshafts 25, thereby improving the applicability of the entire detection device.

[0060] Furthermore, after the axis of the connecting rod neck 252 is coaxial with the output shaft of the driving assembly 02, the full end face runout detection test of the connecting rod neck 252 is performed by moving at least one of the detection assembly 01 and the positioning assembly along the width direction of the base 1. After the full end face runout detection test, the maximum value of the end face runout of the connecting rod neck 252 can be confirmed, and the end face runout condition of the connecting rod neck 252 can be determined.

[0061] The width direction of the base 1 here is Figure 2 y direction in .

[0062] Furthermore, if it is necessary to detect the end face runout of the main journal 251, at least one of the detection component 01 and the positioning component is moved along the length direction of the base 1 so that the detection component 01 can change its axial position relative to the crankshaft 25, so that the detection component 01 reaches the corresponding position of the main journal 251, and then the detection component 01 or the positioning component is moved along the length direction of the base 1 so that the detection component 01 contacts various positions of the end face of the main journal 251 to perform a full end face runout detection test of the main journal 251. After the full end face runout detection test, the maximum value of the end face runout of the main journal 251 can be confirmed, and the end face runout of the main journal 251 can be determined.

[0063] The length direction of the base 1 here is Figure 2 and Figure 1 The x direction in .

[0064] It should be noted that when the end face runout of the connecting rod neck 252 and the end face runout of the main shaft neck 251 are detected, the positioning assembly can adaptively move along the height direction of the base 1 to achieve the coaxial setting of the connecting rod neck 252 or the main shaft neck 251 and the output shaft of the drive assembly 02, so as to achieve the purpose of adjustment and ensure the reliability and effectiveness of the runout detection of the connecting rod neck 252 and the main shaft neck 251.

[0065] During the above process, at least one of the detection assembly 01 and the positioning assembly is movable. Specifically, the detection assembly 01 can be moved toward or away from the positioning assembly, or the positioning assembly can be moved toward or away from the detection assembly 01, or both the positioning assembly and the detection assembly 01 can be moved to achieve relative movement. The specific design can be flexible based on actual conditions, primarily to facilitate the relative position adjustment effect of the connecting rod journal 252 and the main shaft journal 251 during the runout detection test.

[0066] In one embodiment, the detection assembly may include a support member and a lever gauge. The support member supports the lever gauge. Movement of the support member relative to the base 1 enables movement of the lever gauge, which may be in the x-, y-, or z-directions. The lever gauge contacts the end face of the crankshaft, and the end face runout of the connecting rod journal 252 and the main journal 251 is determined by the reading of the lever gauge.

[0067] In one embodiment, a control element can be provided to control the precise movement of the positioning assembly and the detection assembly 01, thereby ensuring the accuracy and effectiveness of the runout test. For a specific type of crankshaft 25, the movement distance and orientation of the positioning assembly and the detection assembly 01 need to be determined. Therefore, the control element can store runout detection control programs for multiple types of crankshafts 25. When applied to a runout detection test of a specific type of crankshaft 25, the operation of the positioning assembly and the detection assembly 01 can be directly controlled by the control element, achieving the effect of automated and intelligent runout detection.

[0068] In a specific embodiment, the base 1 is made of marble, which eliminates the deformation that may be caused by metal materials and improves the stability of the detection device.

[0069] Based on the above embodiment, the detection component 01 includes a guide rail 21, a magnetic meter base 20 and a lever meter 19, please refer to Figure 2 .

[0070] Among them, the magnetic meter stand 20 is slidably connected to the guide rail 21 through the fixed plate 15, that is, the fixed plate 15 and the guide rail 21 are slidably connected, and the guide rail 21 is arranged along the width direction of the base 1. The contact position of the lever meter 19 connected to the magnetic meter stand 20 relative to the crankshaft 25 is achieved by sliding the fixed plate 15 on the guide rail 21.

[0071] Furthermore, in order to facilitate the sliding of the magnetic meter base 20 relative to the guide rail 21, the fixed plate 15 is connected by a movable part, and the movable part can drive the fixed plate 15 to slide on the guide rail 21, that is, the magnetic meter base 20 and the lever meter 19 are slid as a whole on the guide rail 21, and the radial position of the lever meter 19 relative to the end face of the connecting rod neck 252 and the end face of the main shaft neck 251 is changed, that is, the full runout value of the connecting rod neck end face and the main shaft neck end face is measured by the lever meter 19, and the runout of the crankshaft is determined.

[0072] Specifically, the moving member can achieve the sliding of the fixed plate 15 manually or automatically.

[0073] By setting the fixed plate 15, two or more guide rails 21 can be set to ensure the stability, accuracy and reliability of the movement of the magnetic meter base 20 on the fixed plate 15 driven by the moving part, and to ensure that the movement route of the magnetic meter base 20 is along the width direction of the base 1 without causing deviation in other positions.

[0074] The guide rail 21 is provided on the base 1. During the process of the vibration detection, the guide rail 21 cannot move. The only movement that the detection component can achieve is movement along the width direction of the base 1. If it is necessary to change the axial position of the detection component relative to the crankshaft 25, it is necessary to achieve it by moving the positioning component.

[0075] Based on any of the above embodiments, the moving part includes:

[0076] Rotating wheel 18;

[0077] Gear 17, rotatably connected to the fixed plate 15 and connected to the rotating wheel 18;

[0078] The rack 16 is meshed with the gear 17 and is arranged parallel to the guide rail 21. The rotating wheel 18 rotates to realize the movement of the gear 17 relative to the rack 16, so that the magnetic meter base 20 moves along the guide rail 21.

[0079] Specifically, the rotating wheel 18 is connected to the gear 17 in rotation to achieve synchronous rotation of the two, and the gear 17 rotates as the rotating wheel 18 rotates. Based on the engagement of the gear 17 and the rack 16, the gear 17 moves up and down along the rack 16 when rotating, and the rack 16 is set parallel to the guide rail 21, that is, the magnetic meter base 20 and the lever meter 19 are moved as a whole along the guide rail 21, realizing the detection of the full runout of the end faces of the connecting rod neck 252 and the main shaft neck 251.

[0080] In a specific embodiment, a handle can be provided on the rotating wheel 18 to facilitate manual driving of the rotating wheel 18 to rotate, so as to realize the movement of the fixed plate 15 along the guide rail 21 through the engagement of the gear 17 and the rack 16. Through this adjustment method, the adjustment is accurate and effective, ensuring reliable and effective detection of various positions of the end faces of the connecting rod neck 252 and the main shaft neck 251.

[0081] After the position adjustment is completed, the fixing plate 15 is fixed to the guide rail 21, specifically by means of fixing screws, etc., so that the magnetic meter base 20 and the lever meter 19 will not move as a whole during the runout detection test.

[0082] Based on any of the above embodiments, the driving component 02 includes:

[0083] The motor 24 is provided on the base 1;

[0084] A shaft sleeve 8 connects the positioning assembly and the motor 24;

[0085] A transmission member 23, one end of which is sleeved on the shaft sleeve 8, and the other end of which is sleeved on the output wheel of the motor 24. The motor 24 drives the positioning assembly through the shaft sleeve 8 to rotate the crankshaft 25;

[0086] The switch is provided on the motor 24 and is used to control the start and stop of the motor 24 .

[0087] Please refer to Figure 1 and Figure 2 The driving component 02 specifically includes a motor 24, a sleeve 8 and a transmission part 23.

[0088] The output end of the motor 24 is connected to the positioning assembly through the transmission member 23 and the sleeve 8. The rotation of the positioning assembly is realized by rotating the motor 24, that is, the rotation of the crankshaft 25 on the positioning assembly is realized. The positioning assembly and the crankshaft 25 here are in a relatively fixed relationship. When the motor 24 rotates, the positioning assembly and the crankshaft 25 rotate synchronously.

[0089] Specifically, the output wheel sleeve of the motor 24 is provided with a transmission member 23, which is further sleeved on the shaft sleeve 8 to transmit the driving force to the shaft sleeve 8. The shaft sleeve 8 is further connected to the positioning assembly to further realize the rotation of the crankshaft 25 on the positioning assembly.

[0090] Taking a specific implementation as an example, the transmission member 23 is a belt, which has smooth transmission and low noise, ensuring the reliable stability of the rotation of the crankshaft 25.

[0091] Taking a specific embodiment as an example, the drive component 02 also includes a switch component, which is used to control the start and stop of the rotation of the crankshaft 25. When performing the runout detection test, the motor 24 is turned on by the switch component, and the end face circular runout values of the connecting rod neck 252 and the main shaft neck 251 are measured by checking the range of movement of the needle of the lever meter 19.

[0092] Based on any of the above embodiments, the positioning component includes:

[0093] The fixing seat 10 is movably arranged on the base 1;

[0094] V-shaped block 11, connected to the fixed base 10 and used to support the crankshaft 25;

[0095] The locking member 22 is connected to the fixing seat 10 and is used to clamp or release the crankshaft 25 on the V-shaped block 11.

[0096] Please refer to Figure 1 and Figure 2 The fixed seat 10 is movably arranged on the base 1. Specifically, the fixed seat 10 moves along the height direction of the base 1 and along the length direction of the base 1 to realize the position change of the crankshaft 25 relative to the detection component 01.

[0097] Please refer to Figure 4 The bottom of the V-shaped block 11 is clamped in the notch of the fixing seat 10. The top of the V-shaped block 11 has an opening for supporting the crankshaft 25. The end of the crankshaft 25 is supported on the V-shaped block 11. Furthermore, the crankshaft 25 is unlocked and locked by the locking member 22 connected to the fixing seat 10. Specifically, when the locking member 22 is removed, the crankshaft 25 can move freely, such as the crankshaft 25 can be removed from the V-shaped block 11, and the corresponding crankshaft 25 is in the unlocked state; when the locking member 22 is locked, the crankshaft 25 is locked on the V-shaped block 11. At this time, the V-shaped block 11, the fixing seat 10, the crankshaft 25, and the locking member 22 are an integral component (such as Figure 4 The integral component shown in FIG20 can achieve the rotation effect as the motor 24 rotates.

[0098] In a specific embodiment, please refer to Figure 3 The locking part 22 is a quick clamp, which is provided on the handle and the clamping part. The handle has an operating state and a locking state. When the handle is in the locked state, the clamping part is pressed on the crankshaft 25, thereby locking the crankshaft 25 and the positioning assembly, ensuring that the crankshaft 25 will not fall or deflect during the rotation process, thereby ensuring the reliability and stability of the vibration detection test.

[0099] On the basis of any of the above embodiments, a slide rail 26 and a slide block 9 are provided between the shaft sleeve 8 and the positioning assembly, and the slide rail 26 is provided along the height direction of the base 1;

[0100] One side of the sliding block 9 is connected to the fixed seat 10 , and the other side of the sliding block 9 is slidably connected to the slide rail 26 . The sliding of the sliding block 9 is used to achieve the coaxiality of the axis of the connecting rod neck 252 and the shaft sleeve 8 .

[0101] Please refer to Figure 2The slide rail 26 and the sliding block 9 are components that facilitate the sliding of the positioning assembly as a whole along the height direction of the base 1. Specifically, the slide rail 26 is set along the height direction of the base 1, and the sliding block 9 is connected to the fixed seat 10. The change in the height of the crankshaft 25 is achieved by sliding the sliding block 9 on the slide rail 26. When conducting the runout test of the connecting rod neck 252, the coaxiality of the connecting rod neck 252 and the axis and the sleeve 8 can be achieved through the sliding of the sliding block 9, that is, the effect of setting the axis of the connecting rod neck 252 and the center of rotation coaxially is achieved, so as to conduct the runout test of the crank end face corresponding to the connecting rod neck 252.

[0102] In a specific embodiment, when the sliding block 9 slides to the corresponding position on the slide rail 26, the sliding block 9 is locked on the slide rail 26 by a fastener to fix the position of the fixed seat 10, that is, the position of the crankshaft 25 is fixed to wait for the vibration test.

[0103] In another specific embodiment, a component that drives the sliding block 9 to slide is connected to the lower side of the sliding block 9. After the sliding block 9 is in place, the driving component stops working. At this time, the position of the fixing seat 10 can also be limited to limit further movement.

[0104] Based on any of the above embodiments, the shaft sleeve 8 is axially connected with an adjustment seat 12, and the connection here can specifically be a fastener connection, preferably a detachable connection, so that the parts can be repaired or replaced separately when they are worn or damaged.

[0105] The adjustment seat 12 is connected to an adjustment screw 13, and by turning the adjustment screw 13, the height of the fixed seat 10 connected thereto can be adjusted. Specifically, the adjustment screw 13 is arranged along the radial direction of the sleeve 8, that is, along the height direction of the base 1. One end of the adjustment screw 13 is connected to the adjustment seat 12, and the other end extends into the fixed seat 10. Depending on the type of crankshaft 25 or the need to perform end face runout detection of the connecting rod neck 252, the depth of its insertion into the fixed seat 10 can be changed by turning the adjustment screw 13. On the basis of the fixed adjustment seat 12, the fixed seat 10 can naturally slide along the slide rail 26 to adjust the height, that is, to adjust the height of the crankshaft 25. After adjustment, the fixed seat 10 and the sleeve 8 are connected and fixed, and the motor 24 is waited for to start to perform the runout detection test.

[0106] When adjusting the height of the crankshaft 25, the crankshaft 25 does not need to be placed in the V-block 11 first. The relative position of the crankshaft 25 in the V-block is fixed. Therefore, by adjusting the fixing seat 10 to adjust the height of the V-block 11, the height of the crankshaft 25 can be adjusted. After the V-block 11 is adjusted, the crankshaft 25 can be placed and fixed by the locking piece 22.

[0107] By setting the adjustment screw 13 and the adjustment seat 12, the structure is simple and easy to operate. After adjustment, when the adjustment screw 13 is not operated, the height position of the fixed seat 10 can be fixed, and the fixed seat 10 will no longer slide relative to the slide rail 26, thereby ensuring the reliable stability of the detection test.

[0108] In summary, the specific operating procedures for detecting the end face runout of the connecting rod neck 252 are as follows:

[0109] Place the crankshaft 25 on the V-shaped block 11, and lock the crankshaft 25 with the locking pieces 22 at both ends of the crankshaft 25;

[0110] According to the type of crankshaft 25, the axis of the connecting rod neck 252 is adjusted to the rotation center (the position of the axis of the sleeve 8) by adjusting the screw 13;

[0111] Install the magnetic meter base 20 on the fixed plate 15, fix the fixed plate 15 on the guide rail 21 with screws, and adjust the needle of the lever meter 19 to rest on the end surface of the connecting rod neck 252 to be measured;

[0112] By pressing the switch of the motor 24 and checking the range of movement of the needle of the lever meter 19, the circular runout value of the end face of the connecting rod neck 252 is measured. Further, by rotating the wheel 18, the movement of the gear 17 and the rack 16 drives the magnetic meter base 20 to move back and forth on the guide rail 21, and the lever meter 19 measures the total runout value of the end face of the connecting rod neck.

[0113] On the basis of any of the above embodiments, an adjustment rail 2 is provided in the length direction of the base 1, and the adjustment rail 2 is slidably connected to the workbench base plate 3, and the workbench base plate 3 is connected to the positioning assembly. The sliding of the workbench base plate 3 is used to change the axial position of the detection assembly 01 relative to the crankshaft 25 on the positioning assembly; the adjustment rail 2 is used to adjust the components corresponding to the positions of the main journal 251 or connecting rod journal 252 of the detection assembly 01 and the crankshaft 25. Specifically, multiple adjustment rails 2 can be set to ensure the reliable stability of the workbench base plate 3 during relative sliding.

[0114] Furthermore, the workbench base plate 3 is slidably connected to a support 6, and a bearing 7 rotatably connected to the sleeve 8 is provided in the support 6. The setting of the bearing 7 provides a rotation guide for the rotation of the sleeve 8 and the crankshaft 25.

[0115] The support 6 and the workbench base plate 3 are slidably connected. The sliding here also refers to the sliding along the length direction of the base 1, which is used to change the distance between the corresponding positioning components connected at both ends of the crankshaft 25, so as to be suitable for the end face runout detection test of crankshafts 25 of different lengths, thereby improving the applicability of the detection device.

[0116] In a specific embodiment, in order to ensure the reliable and accurate sliding of the support 6, a step guide surface is provided on the workbench bottom plate 3. The support 6 contacts the step guide surface to ensure the accuracy of the sliding route. The step guide surface serves as a reference setting for the sliding of the support 6. The support 6 has at least two surfaces in contact with the workbench bottom plate 3 to ensure the accuracy of the sliding route.

[0117] On the basis of any of the above embodiments, the inner ring of the bearing 7 abuts against the shoulder of the sleeve 8, and the outer ring of the bearing 7 abuts against the inner step hole of the support 6 to limit the axial movement of the rear end face of the bearing 7; the rear end face here is Figure 1 and Figure 2 on the right side.

[0118] A first mounting groove is provided on one side of the shaft sleeve 8 where the shaft shoulder is provided, and a first elastic washer 4 is provided in the first mounting groove;

[0119] A second mounting groove is provided on one side of the step hole in the support 6, and a second elastic washer 5 is provided in the second mounting groove. The first elastic washer 4 and the second elastic washer 5 are both in contact with the front end face of the bearing 7 to limit the axial movement of the front end face.

[0120] The first elastic washer 4 and the second elastic washer 5, the shoulder on the sleeve 8, and the stepped hole of the support 6 together form a reliable limit for the bearing 7, ensuring the reliable guiding effect of the bearing 7 on the sleeve 8 and the reliable stability of the bearing 7.

[0121] On the basis of any of the above embodiments, a locking device 14 is further provided between the base 1 and the workbench bottom plate 3 , and the locking device 14 is used to lock or unlock the workbench bottom plate 3 .

[0122] When the workbench base plate 3 slides relative to the adjustment rail 2 on the base 1 to change the axial position of the detection assembly 01 relative to the crankshaft 25, the adjustment operation is carried out through the locking device 14. When adjustment is required, the locking device 14 is loosened. After the adjustment is completed, the locking device 14 is locked to the base 1 and the workbench base plate 3 to ensure reliability during the runout detection test.

[0123] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0124] The above is a detailed introduction to a crankshaft end face runout detection device provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A crankshaft end face runout detection device, characterized in that: include: Base (1); A positioning assembly, provided on the base (1) and used for placing the crankshaft (25); A drive assembly (02) for driving the crankshaft (25), wherein the positioning assembly can be moved along the height direction of the base (1) so that the connecting rod neck (252) of the crankshaft (25) and the output shaft of the drive assembly (02) are coaxial; A detection component (01) for detecting end face runout values of the connecting rod journal (252) and the main journal (251); At least one of the detection component (01) and the positioning component can be moved along the length direction of the base (1) to change the axial position of the detection component (01) relative to the crankshaft (25); At least one of the detection component (01) and the positioning component can be moved along the width direction of the base (1) to change the radial position of the detection component (01) relative to the connecting rod neck end face or the main journal end face of the crankshaft (25).

2. The crankshaft end face runout detection device according to claim 1, characterized in that: The detection component (01) comprises: A guide rail (21) is provided on the base (1); A magnetic meter base (20) is slidably connected to the guide rail (21) via a fixing plate (15); A lever gauge (19) connected to the magnetic gauge base (20) and used to contact the end faces of the connecting rod neck and the main shaft neck for measurement; A moving member is connected to the fixed plate (15) to achieve its movement on the guide rail (21) to change the radial position of the lever gauge (19) relative to the end face of the connecting rod neck (252) and the end face of the main shaft neck (251).

3. The crankshaft end face runout detection device according to claim 2, characterized in that: The moving part includes: Runner (18); a gear (17) rotatably connected to the fixed plate (15) and connected to the rotating wheel (18); The rack (16) is meshed with the gear (17) and is arranged parallel to the guide rail (21). The rotating wheel (18) rotates to achieve the movement of the gear (17) relative to the rack (16), so that the magnetic meter base (20) moves along the guide rail (21).

4. The crankshaft end face runout detection device according to claim 1, characterized in that: The driving component (02) comprises: A motor (24) is provided on the base (1); A shaft sleeve (8) connecting the positioning assembly and the motor (24); a transmission member (23), one end of the transmission member (23) being sleeved on the shaft sleeve (8), and the other end of the transmission member (23) being sleeved on the output wheel of the motor (24), and the motor (24) driving the positioning assembly through the shaft sleeve (8) to rotate the crankshaft (25); A switch component is provided on the motor (24) and is used to control the start and stop of the motor (24).

5. The crankshaft end face runout detection device according to claim 4, characterized in that: The positioning component includes: A fixed seat (10) movably disposed on the base (1); A V-shaped block (11) connected to the fixing seat (10) and used to support the crankshaft (25); A locking member (22) is connected to the fixing seat (10) and is used to clamp or release the crankshaft (25) on the V-shaped block (11).

6. The crankshaft end face runout detection device according to claim 5, characterized in that: A slide rail (26) and a slide block (9) are provided between the shaft sleeve (8) and the positioning assembly, and the slide rail (26) is provided along the height direction of the base (1); One side of the sliding block (9) is connected to the fixed seat (10), and the other side of the sliding block (9) is slidably connected to the slide rail (26). The sliding of the sliding block (9) is used to achieve the coaxiality of the connecting rod neck (252) axis and the shaft sleeve (8).

7. The crankshaft end face runout detection device according to claim 5 or 6, characterized in that: The shaft sleeve (8) is axially connected to an adjusting seat (12), and the adjusting seat (12) is connected to an adjusting screw (13). The adjusting screw (13) is arranged along the radial direction of the shaft sleeve (8). The adjusting screw (13) can be rotated to change the depth of its insertion into the fixing seat (10) to change the height of the fixing seat (10).

8. The crankshaft end face runout detection device according to claim 7, characterized in that: An adjustment rail (2) is provided in the length direction of the base (1), the adjustment rail (2) is slidably connected to a workbench bottom plate (3), the workbench bottom plate (3) is connected to the positioning assembly, and the sliding of the workbench bottom plate (3) is used to change the axial position of the detection assembly (01) relative to the crankshaft (25); The workbench base plate (3) is slidably connected to a support (6), and a bearing (7) rotatably connected to the shaft sleeve (8) is provided in the support (6). The support (6) can slide on the workbench base plate (3) to change the spacing between the corresponding positioning components at both ends of the crankshaft (25).

9. The crankshaft end face runout detection device according to claim 8, characterized in that: The inner ring of the bearing (7) abuts against the shoulder of the shaft sleeve (8), and the outer ring of the bearing (7) abuts against the inner step hole of the support (6) to limit the axial movement of the rear end face of the bearing (7); The shaft sleeve (8) is provided with a first mounting groove on one side of the shaft shoulder, and a first elastic washer (4) is provided in the first mounting groove; A second mounting groove is also provided on one side of the support (6) where the stepped hole is provided. A second elastic washer (5) is provided in the second mounting groove. Both the first elastic washer (4) and the second elastic washer (5) abut against the front end surface of the bearing (7) to limit axial movement.

10. The crankshaft end face runout detection device according to claim 9, characterized in that: A locking device (14) is further provided between the base (1) and the workbench bottom plate (3), and the locking device (14) is used to lock or unlock the workbench bottom plate (3).

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