A camshaft phase angle lift meter

Abstract

The utility model discloses a camshaft phase angle lift measuring instrument, including two tailstock mechanism of setting respectively in the left and right position of workstation, left tailstock mechanism is drive end tailstock mechanism, and right tailstock mechanism is pneumatic tight tailstock mechanism, and is equipped with support mechanism between two tailstock mechanisms, drive end tailstock mechanism includes drive part and angle measuring part, and drive part is used for driving the rotation of the measured camshaft, and angle measuring part is used for measuring the rotation angle of camshaft, workstation still is equipped with the displacement guide rail of extending along left and right directions, is equipped with with its sliding connection and can position locking cam measuring device on displacement guide rail, and cam measuring device removes to the cam position of needing detection, and the radial displacement variation of measuring cam corresponding rotation angle is changed. The utility model has realized the on -the -spot quick detection of camshaft's cam phase angle and lift, satisfies the requirement of user on -the -spot installation and product.

Description

Technical Field

[0001] This utility model relates to the field of camshaft testing technology, specifically to a camshaft cam phase angle and lift measuring instrument. Background Technology

[0002] As a crucial component of a motor vehicle's core engine, the relative angle and lift of the camshaft are essential parameters that require inspection. Current testing primarily relies on the American ADCOLE camshaft measuring instrument, which is costly, inefficient, and limited to use in a metrology laboratory, failing to meet the needs of rapid on-site inspection on the production line.

[0003] Therefore, there is a need for a fast, accurate, and low-cost specialized device that can be used on the camshaft production site to detect the cam phase angle and lift parameters of the camshaft. Utility Model Content

[0004] This invention provides a camshaft phase angle lift measuring instrument to solve the problems of the prior art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A camshaft phase angle lift measuring instrument includes a worktable with two center mechanisms on the left and right sides of the worktable. The left center mechanism is a drive-end center mechanism, and the right center mechanism is a pneumatic clamping center mechanism. A support mechanism is provided between the two center mechanisms. During measurement, the camshaft to be measured is placed on the support mechanism, and the pneumatic clamping center mechanism extends to clamp and position the camshaft to be measured between the two center mechanisms. The drive end tip mechanism includes a drive unit and an angle measuring unit. The drive unit is used to drive the camshaft being measured to rotate, and the angle measuring unit is used to measure the rotation angle of the camshaft. The worktable is also equipped with a displacement guide rail extending in the left and right direction. A cam measuring device is slidably connected to the displacement guide rail and can be locked in position. The cam measuring device moves to the position of the cam to be detected and measures the radial displacement change of the cam corresponding to the rotation angle.

[0006] Furthermore, the drive unit includes a left support, on which a left mounting seat is provided. A central shaft that rotates within the left mounting seat is provided. The central shaft extends in the left-right direction, and its left end is connected to the output end of the reducer. A left center is coaxially mounted on the right end of the central shaft. The left center contacts and engages with the left end center hole of the camshaft being tested. A floating pin is provided beside the left center, and the floating pin engages with the positioning pin hole on the camshaft being tested.

[0007] Furthermore, the angle measuring unit includes an encoder, which is connected to the left tip.

[0008] Furthermore, an angle positioning disk is fixedly provided at the left end of the central shaft, and a positioning mandrel that can slide left and right is provided on the left mounting seat on the right side of the angle positioning disk; during measurement, the angle positioning disk is rotated so that the positioning mandrel is inserted into the reference hole on the angle positioning disk to achieve the initial positioning of the camshaft.

[0009] Furthermore, the pneumatic clamping center mechanism includes a right support, on which a cylinder arranged in a left-right direction is provided. The piston end of the cylinder faces left and is equipped with a right center, which contacts and engages with the right end center hole of the camshaft being tested.

[0010] Furthermore, the support mechanism includes an intermediate support frame, the upper end of which is provided with a V-shaped frame that can move up and down.

[0011] Furthermore, the worktable is provided with adjustment guide rails at positions corresponding to the drive end tip mechanism, support mechanism and pneumatic clamping tip mechanism, and the drive end tip mechanism, support mechanism and pneumatic clamping tip mechanism are respectively locked and slidably mounted on the adjustment guide rails.

[0012] Furthermore, the cam measuring device includes a lower base, which is slidably mounted on a displacement guide rail, and the lower base is provided with a locking wrench that cooperates with the displacement guide rail to lock the position of the lower base on the displacement guide rail. The lower base is provided with a sliding guide rail extending in the front-to-back direction, and the sliding guide rail is provided with an upper base that slides with it. At the same time, the lower base is provided with a pushing mechanism, which drives the upper base to move closer to or away from the camshaft being measured. A measuring body is fixed on the upper base. Inside the measuring body is a sliding seat that can move back and forth. A measuring disk is rotatably mounted on one end of the sliding seat near the camshaft being measured. A measuring anvil is mounted on the sliding seat and is connected to a large-range optical grating precision sensor.

[0013] Furthermore, the pushing mechanism includes a limiting block provided at the front end of the sliding guide rail and a manual clamp provided at the rear end of the sliding guide rail, the manual clamp having a push rod that can move back and forth; The front end of the push rod is connected to the upper base, and a compression spring is provided at the connection between the two; the manual clamping action drives the push rod to move forward, which in turn pushes the compression spring to deform and generate thrust, which causes the measuring disc to contact the cam being measured.

[0014] Furthermore, it also includes a micrometer, where the angle signal measured by the angle measuring unit and the displacement signal measured by the cam measuring device are sent to the micrometer for data processing.

[0015] The beneficial effects of this utility model are: This utility model is designed according to the user's on-site installation and product requirements, realizing the on-site detection of cam phase angle and lift of camshaft, supplementing another form of camshaft cam detection, and enabling rapid detection of this type of product by simulating installation conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is the front view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a top view of the drive end tip mechanism in this utility model; Figure 5 for Figure 4 AA section view in the middle; Figure 6 This is an enlarged view of the cam measuring device in this utility model; Figure 7 This is a top view of the cam measuring device in this utility model; Figure 8 This is a front view of the cam measuring device in this utility model; Figure 9 for Figure 8 BB cross-section diagram.

[0017] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the present invention. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] like Figures 1 to 9 As shown, this embodiment provides a camshaft phase angle lift measuring instrument, including a worktable 1, a drive end center mechanism 2, a support mechanism 3, a pneumatic clamping center mechanism 4, a cam measuring device 7, and a micrometer 8.

[0020] Two centering mechanisms are provided on the left and right sides of the worktable. The left centering mechanism is the drive centering mechanism 2, and the right centering mechanism is the pneumatic clamping centering mechanism 4. A support mechanism 3 is provided between the two centering mechanisms. During measurement, the camshaft to be measured is placed on the support mechanism 4, and the pneumatic clamping centering mechanism 3 extends to clamp and position the camshaft to be measured between the two centering mechanisms.

[0021] Adjustment rails 5 are provided on the worktable 1 at positions corresponding to the drive-end centering mechanism 2, support mechanism 3, and pneumatic clamping centering mechanism 4. Adjustment rails 5 can be T-shaped sliding rails. The drive-end centering mechanism, support mechanism 3, and pneumatic clamping centering mechanism 4 are each lockably and slidably mounted on the adjustment rails, allowing them to slide left and right for adjustment to meet different specifications.

[0022] In this embodiment, the drive end tip mechanism 2 includes a drive unit and an angle measuring unit. The drive unit is used to drive the camshaft under test to rotate, and the angle measuring unit is used to measure the rotation angle of the camshaft.

[0023] The drive unit includes a left support 21 mounted on the adjusting guide rail 5. A left mounting seat 22 is provided on the left support 21, and a central shaft 23, which rotates within the left mounting seat 22, extends in the left-right direction. The left end of the central shaft 23 is connected to the output end of the reducer 24, and a handwheel is provided at the input end of the reducer 24. A left center 25 is coaxially mounted on the right end of the central shaft 23, and the left center 25 contacts and engages with the left end center hole of the camshaft being tested. A floating pin 29 is provided beside the left center, and the floating pin 29 engages with the locating pin hole on the camshaft being tested.

[0024] The angle measuring unit includes a high-precision encoder, which is connected to the left center point. Furthermore, an angle positioning disk 26 is fixedly installed at the left end of the central shaft 23, and a positioning mandrel 27 that can slide left and right is provided on the left mounting base 22 on the right side of the angle positioning disk 26. During measurement, the angle positioning disk 26 is rotated so that the positioning mandrel 27 is inserted into the reference hole 28 on the angle positioning disk 26 to achieve the initial positioning of the camshaft.

[0025] The speed reducer is used to reduce speed during measurement, which facilitates control of the rotation speed of the tip and improves measurement accuracy. Rotating the camshaft being measured, the encoder instantly feeds back the relative angle A to the micrometer.

[0026] In this embodiment, the pneumatic clamping center mechanism 4 includes a right support 41 mounted on the adjusting guide rail 5. A cylinder 42 arranged in a left-right direction is mounted on the right support 41. The piston end of the cylinder 42 faces left and is fitted with a right center 43, which contacts and engages with the right end center hole of the camshaft being tested. The cylinder 42 has a manual control valve to control its extension and retraction, which controls the on / off state of the air supply to achieve the function of clamping the camshaft being tested.

[0027] In this embodiment, the driving end center mechanism 2 and the pneumatic clamping center mechanism 4 are precision shaft transmissions, and the runout is guaranteed to be within 0.003mm.

[0028] In this embodiment, the support mechanism 3 includes two intermediate support frames 31 installed on the adjustment guide rail 5. The upper ends of the two intermediate support frames 31 are provided with V-shaped frames 32 that can move up and down, so as to facilitate the adjustment of the positioning center height.

[0029] The worktable is also equipped with a displacement guide rail 6 extending in the left and right direction. A cam measuring device 7 is slidably connected to the displacement guide rail and can be locked in position. The cam measuring device 7 can move along the displacement guide rail 6 to each cam position that needs to be detected and measure the radial displacement change of the cam corresponding to the rotation angle.

[0030] In this embodiment, the cam measuring device 7 includes a lower base 71, which is slidably mounted on the displacement guide rail 6. A locking wrench 72 that cooperates with the displacement guide rail is provided on the right side of the lower base 71. The locking wrench 72 locks the position of the lower base 71 on the displacement guide rail 6.

[0031] The lower base 71 is provided with a sliding guide rail 73 extending in the front-rear direction, and the sliding guide rail 73 is provided with an upper base 74 that slides with it. At the same time, the lower base 74 is provided with a pushing mechanism, which drives the upper base 74 to move closer to or away from the camshaft being measured.

[0032] A measuring body 70 is fixed on the upper base 74. Inside the measuring body 70, a sliding seat 75 that can move back and forth is provided via a precision linear bearing. A dedicated measuring disk 76 is rotatably mounted on one end of the sliding seat 75 near the camshaft being measured. The measuring disk 76 contacts the camshaft being measured during measurement, performing gapless contact measurement in the middle of the measurement. A carbide measuring anvil is mounted on the sliding seat 75, and the measuring anvil is connected to a large-range optical grating precision sensor.

[0033] Specifically, the pushing mechanism includes a limit block set at the front end of the sliding guide rail and a manual clamp 77 set at the rear end of the sliding guide rail. The manual clamp 77 has a push rod 78 that can move back and forth. The front end of the push rod 78 is connected to the upper base 74, and a compression spring 79 is provided at the connection between the two. When the manual clamp 77 moves, it drives the push rod 78 to move forward, thereby pushing the compression spring to deform and generate thrust. The thrust causes the measuring disk 76 to contact the cam being measured.

[0034] The radial displacement change B of the measuring disc is collected by the sensor and fed back to the micrometer 8 for calculation, thereby obtaining the correspondence between angle A and displacement B, thus meeting the user's requirements. The micrometer is a conventional technology in this field, and its structure and principle will not be described in detail.

[0035] The measurement process of this utility model is as follows: The camshaft to be tested is placed on the two V-shaped brackets 32. The manual control valve is vented, and the right center of the pneumatic clamping center mechanism 4 automatically extends to push the camshaft to be tested, thereby achieving positioning of the two centers.

[0036] Insert the floating pin 29 on the drive end center mechanism 2 into the locating pin hole of the camshaft, and rotate the angle locating disk 26 so that the locating mandrel 27 is inserted into the reference hole 28 on the angle locating disk 26. At this time, the base circle of the reference cam is facing forward.

[0037] Move the cam measuring device 7 along the displacement guide rail 6 to the reference cam position, and tighten the locking wrench 72 on the right side to prevent slippage. Push the cam measuring device 7 towards the cam base circle so that the measuring disk 76 contacts the cam base circle.

[0038] Set both the angle and lift on the micrometer 8 to zero.

[0039] Loosen and pull out the positioning spindle 27. Turn the handwheel on the reducer 24. The handwheel drives the reducer 24, which in turn drives the left center point 25. The left center point 25 drives the camshaft to start rotating. At this time, the angle and lift of the micrometer 8 change.

[0040] When the lift reaches the specified displacement value, check whether the corresponding angle is within the required angle range to determine whether the phase angle of the cam is qualified.

[0041] After the test is completed, exit the cam measuring device 7, loosen the locking wrench 72, slide to another cam, and perform the measurement according to the above requirements.

[0042] The above embodiments are only used to illustrate and not limit the technical solutions of this utility model. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the utility model without departing from the spirit and scope of the utility model. Any modifications or partial substitutions should be covered within the scope of the claims of this utility model.

[0043] If the terms "first" or "second" are used in this document to define the components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing this utility model and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A camshaft phase angle lift measuring instrument, characterized in that: The device includes a worktable with two center mechanisms on the left and right sides. The left center mechanism is a drive center mechanism, and the right center mechanism is a pneumatic clamping center mechanism. A support mechanism is provided between the two center mechanisms. During measurement, the camshaft to be measured is placed on the support mechanism, and the pneumatic clamping center mechanism extends to clamp and position the camshaft to be measured between the two center mechanisms. The drive end tip mechanism includes a drive unit and an angle measuring unit. The drive unit is used to drive the camshaft being measured to rotate, and the angle measuring unit is used to measure the rotation angle of the camshaft. The worktable is also equipped with a displacement guide rail extending in the left and right direction. A cam measuring device is slidably connected to the displacement guide rail and can be locked in position. The cam measuring device moves to the position of the cam to be detected and measures the radial displacement change of the cam corresponding to the rotation angle.

2. The camshaft phase angle lift measuring instrument according to claim 1, characterized in that: The drive unit includes a left support, on which a left mounting seat is provided. A central shaft that rotates within the left mounting seat is provided. The central shaft extends in the left-right direction, and its left end is connected to the output end of the reducer. A left center is coaxially mounted on the right end of the central shaft. The left center contacts and engages with the left end center hole of the camshaft being tested. A floating pin is provided beside the left center, and the floating pin engages with the positioning pin hole on the camshaft being tested.

3. The camshaft phase angle lift measuring instrument according to claim 2, characterized in that: The angle measuring unit includes an encoder, which is connected to the left tip.

4. The camshaft phase angle lift measuring instrument according to claim 3, characterized in that: An angle positioning disk is fixedly installed at the left end of the central shaft, and a positioning mandrel that can slide left and right is provided on the left mounting seat on the right side of the angle positioning disk. During measurement, the angle positioning disk is rotated so that the positioning mandrel is inserted into the reference hole on the angle positioning disk to achieve the initial positioning of the camshaft.

5. The camshaft phase angle lift measuring instrument according to claim 1, characterized in that: The pneumatic clamping center mechanism includes a right support, on which a cylinder arranged in a left-right direction is provided. The piston end of the cylinder faces left and is equipped with a right center, which contacts and engages with the right end center hole of the camshaft being tested.

6. The camshaft phase angle lift measuring instrument according to claim 1, characterized in that: The support mechanism includes an intermediate support frame, and the upper end of the intermediate support frame is provided with a V-shaped frame that can move up and down.

7. The camshaft phase angle lift measuring instrument according to any one of claims 1-6, characterized in that: Adjustment rails are provided on the worktable at positions corresponding to the drive end tip mechanism, support mechanism, and pneumatic clamping tip mechanism. The drive end tip mechanism, support mechanism, and pneumatic clamping tip mechanism are respectively locked and slidably mounted on the adjustment rails.

8. The camshaft phase angle lift measuring instrument according to claim 7, characterized in that: The cam measuring device includes a lower base, which is slidably mounted on a displacement guide rail. The lower base is provided with a locking wrench that cooperates with the displacement guide rail to lock the position of the lower base on the displacement guide rail. The lower base is provided with a sliding guide rail extending in the front-to-back direction, and the sliding guide rail is provided with an upper base that slides with it. At the same time, the lower base is provided with a pushing mechanism, which drives the upper base to move closer to or away from the camshaft being measured. A measuring body is fixed on the upper base. Inside the measuring body is a sliding seat that can move back and forth. A measuring disk is rotatably mounted on one end of the sliding seat near the camshaft being measured. A measuring anvil is mounted on the sliding seat and is connected to a large-range optical grating precision sensor.

9. The camshaft phase angle lift measuring instrument according to claim 8, characterized in that: The pushing mechanism includes a limit block provided at the front end of the sliding guide rail and a manual clamp provided at the rear end of the sliding guide rail, the manual clamp having a push rod that can move back and forth; The front end of the push rod is connected to the upper base, and a compression spring is provided at the connection between the two; the manual clamping action drives the push rod to move forward, which in turn pushes the compression spring to deform and generate thrust, which causes the measuring disc to contact the cam being measured.

10. The camshaft phase angle lift measuring instrument according to claim 1, characterized in that: It also includes a micrometer, where the angle signal measured by the angle measuring unit and the displacement signal measured by the cam measuring device are sent to the micrometer for data processing.

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