A camshaft groove flatness measuring tool

Abstract

This utility model discloses a camshaft groove surface flatness measuring fixture, including a placement platform. U-shaped brackets are fixedly connected to the bottom ends of the outer walls on both sides of the placement platform. Multiple vertically penetrating placement cavities are opened on the top of the placement platform, and a measuring mechanism is installed in each cavity. An L-shaped bracket is fixedly connected to the top end of one outer wall of the U-shaped bracket. By setting two sets of cylinders and clamping plate structures, the camshaft body can be clamped and fixed. When the motor rotates the clamped camshaft body, the outer wall of the guide wheel slides tightly against the groove surface of the camshaft body. When the groove surface of the camshaft body is uneven, the hollow column will slide the contact rod on one side of the sliding frame upwards or downwards, causing the contact rod to touch the contact sensor. An alarm will then sound to alert the operator. This process not only improves the accuracy of the measurement results but also saves the operator a significant amount of time and effort.

Description

Technical Field

[0001] This utility model relates to the field of camshaft production equipment technology, and in particular to a tooling for measuring the flatness of camshaft groove surfaces. Background Technology

[0002] The camshaft is an important component of the engine's valve train. The flatness of its groove surface refers to the amount of variation between the actual surface of the groove surface on the camshaft and its theoretical plane. Theoretically, the groove surface should be an ideal plane. However, in actual processing and use, due to the influence of various factors, the groove surface may have undulations and unevenness. This deviation in flatness will have a significant impact on the performance of the camshaft and the components that it mates with.

[0003] The following problems exist: In the current common methods for measuring the flatness of camshaft groove surfaces, the usual procedure is for the operator to hold a lighting device and carefully observe the groove surface of the camshaft, judging the flatness of the groove surface by visual inspection. In addition, the operator sometimes directly touches the groove surface of the camshaft with their fingers to perceive the flatness of the groove surface by touch. However, this measurement method not only consumes a lot of time and energy of the operator, but also often leads to inaccurate measurement results due to the subjectivity of human visual recognition and finger touch, thus affecting the accuracy of the overall camshaft groove surface flatness measurement. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A camshaft groove surface flatness measuring fixture includes a placement platform. U-shaped brackets are fixedly connected to the bottom ends of the outer walls on both sides of the placement platform. Multiple sets of vertically penetrating placement cavities are opened on the top of the placement platform, and a measuring mechanism is installed in the placement cavities. An L-shaped bracket is fixedly connected to the top end of one outer wall of the U-shaped bracket. A motor is fixedly connected to the top end of the L-shaped bracket. An n-shaped bracket is fixedly connected to the movable end of the motor. Cylinders penetrate both outer walls of the n-shaped bracket. Clamping plates are fixedly connected to the movable ends of the cylinders. A camshaft body is installed on the opposite surfaces of the two sets of clamping plates.

[0007] As a further description of the above technical solution:

[0008] The measuring mechanism includes an outer frame, the inner wall of the placement cavity is sleeved with the outer wall of the outer frame, and a housing is fixedly connected to the inner wall of the outer frame. A square hole is opened at the center of the top of each housing, and a hollow column is slidably connected to the inner wall of each square hole.

[0009] As a further description of the above technical solution:

[0010] Ventilation holes are provided at the top of the outer walls on both sides of the hollow column, and inserts are fitted onto the top of the inner walls of the hollow column. Roller plates are fixedly connected to the top of each insert.

[0011] As a further description of the above technical solution:

[0012] The top of each roller plate is provided with a roller groove, and the inner wall of each roller groove is rotatably connected with a guide wheel, and the opposite surfaces of two adjacent sets of guide wheels can slide in close contact.

[0013] As a further description of the above technical solution:

[0014] Each hollow column has a sliding frame fixedly connected to its bottom outer wall, and a contact rod is fixedly connected to one side of the outer wall of each sliding frame. An insulating plate passes through the center of one side of the inner wall of the housing.

[0015] As a further description of the above technical solution:

[0016] Contact sensors are fixedly connected to the top and bottom of the insulating plate. The outer wall of the insulating plate and the contact sensor on the same side is slidably connected to the top of the contact rod. An alarm is fixedly connected to the outer wall of the other side of the contact sensor.

[0017] As a further description of the above technical solution:

[0018] Both ends of the bottom of the housing are fixedly connected with threaded rods, the top of the outer wall of the threaded rods is fitted with a baffle, and the bottom of the outer wall of the threaded rods is threaded with a nut.

[0019] As a further description of the above technical solution:

[0020] Each baffle is fixedly connected to a limiting rod at the top center. The top of the outer wall of each limiting rod is slidably connected to the inner wall of the hollow column. A return spring is sleeved on the bottom of the outer wall of each limiting rod.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] (1) By setting two sets of cylinders and clamping plate structure, the camshaft body can be clamped and fixed. When the motor rotates the clamped camshaft body, the outer wall of the guide wheel will also slide against the groove surface of the camshaft body. When the groove surface of the camshaft body is uneven, the hollow column will slide the contact rod on the outer wall of the slide frame upward or downward, and at the same time let the contact rod touch the contact sensor. Then the alarm will sound to remind the staff. The whole process not only improves the accuracy of the measurement results, but also saves the staff a lot of time and energy.

[0023] (2) By setting the connection structure between the threaded rod and the nut, the baffle can be fixed on the housing and block the opening at the bottom of the housing. After the nut is removed, the baffle can be disassembled and the damaged return spring can be replaced. By setting multiple placement cavities, the number of measuring mechanisms installed can be controlled according to the length of the camshaft body groove. Attached Figure Description

[0024] Figure 1 This is a three-dimensional view of the present invention;

[0025] Figure 2 This is a front view of the present invention;

[0026] Figure 3 This is a front sectional view of the present invention;

[0027] Figure 4 This is a front sectional view of the measuring mechanism in this utility model.

[0028] The correspondence between the labels and component names in the attached figures is as follows:

[0029] 1. Placement platform; 2. U-shaped bracket; 3. Placement cavity; 4. Measuring mechanism; 41. Outer frame; 42. Housing; 43. Hollow column; 44. Vent hole; 45. Insert block; 46. Roller plate; 47. Guide wheel; 48. Sliding frame; 49. Contact rod; 410. Insulating plate; 411. Contact sensor; 412. Alarm; 413. Threaded rod; 414. Baffle; 415. Nut; 416. Limiting rod; 417. Return spring; 5. L-shaped bracket; 6. Motor; 7. N-shaped bracket; 8. Cylinder; 9. Clamping plate; 10. Camshaft body. Detailed Implementation

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0033] Reference Figure 1-4 This utility model provides an embodiment of a camshaft groove surface flatness measuring fixture, comprising a placement platform 1, with U-shaped brackets 2 fixedly connected to the bottom ends of the outer walls on both sides of the placement platform 1, and multiple sets of vertically penetrating placement cavities 3 opened on the top of the placement platform 1. An outer frame 41 is fitted onto the inner wall of each placement cavity 3, and a housing 42 is fixedly connected to the inner wall of each outer frame 41. The bottom of each housing 42 has an opening. By setting the outer frame 41, the placement of the housing 42 can be limited, thereby preventing the housing 42 from falling out of the placement cavity 3. The shell 42 has a square hole at the center of its top, and a hollow column 43 is slidably connected to the inner wall of the square hole. Ventilation holes 44 are opened at the top of the outer walls on both sides of the hollow column 43. Insert blocks 45 are sleeved on the top of the inner wall of the hollow column 43. Roller plates 46 are fixedly connected to the top of the insert blocks 45. Roller grooves are opened at the top of the roller plates 46, and guide wheels 47 are rotatably connected to the inner wall of the roller grooves. The guide wheels 47 can roll close to the inner wall of the roller grooves at the top of the roller plates 46.

[0034] A sliding frame 48 is fixedly connected to the bottom of the outer wall of the hollow column 43. The sliding frame 48 is located inside the housing 42. A contact rod 49 is fixedly connected to one side of the outer wall of the sliding frame 48. An insulating plate 410 passes through the center of one side of the inner wall of the housing 42. A contact sensor 411 is fixedly connected to the top and bottom of the insulating plate 410. The outer wall of the insulating plate 410 and the contact sensor 411 on the same side are slidably connected to the top of the contact rod 49. An alarm 412 is fixedly connected to the other side of the outer wall of the contact sensor 411. When the contact rod 49 touches... When the sensor 411 is touched, the alarm 412 will sound. Threaded rods 413 are fixedly connected to both ends of the bottom of the housing 42. A baffle 414 is fitted onto the top of the outer wall of the threaded rod 413. Both ends of the baffle 414 have through holes extending vertically downwards. The outer wall of the threaded rod 413 extends vertically downwards through the through holes at both ends of the baffle 414. Nuts 415 are threadedly connected to the bottom end of the outer wall of the threaded rod 413. By setting the connection structure between the threaded rod 413 and the nut 415, the baffle 414 can be fixed to the housing. On baffle 42, the bottom opening of the housing 42 is blocked. A limit rod 416 is fixedly connected to the center of the top of each baffle 414. The top of the outer wall of the limit rod 416 is slidably connected to the inner wall of the hollow column 43. The limit rod 416 improves the stability of the hollow column 43 during its up-and-down sliding. A return spring 417 is sleeved on the bottom of the outer wall of each limit rod 416. The return spring 417 pushes the hollow column 43 and the sliding frame 48 upwards. After removing the nut 415, the baffle 414 can be adjusted. 14. Disassembly is performed, and then the damaged return spring 417 can be replaced. The measuring mechanism 4 can be formed by setting the outer frame 41, housing 42, hollow column 43, vent 44, insert block 45, roller plate 46, guide wheel 47, slide frame 48, contact rod 49, insulating plate 410, contact sensor 411, alarm 412, threaded rod 413, baffle 414, nut 415, limit rod 416 and return spring 417. The opposite surfaces of the guide wheels 47 in two adjacent sets of measuring mechanisms 4 can slide in close contact.

[0035] An L-shaped bracket 5 is fixedly connected to the top of one side of the outer wall of the U-shaped bracket 2. A motor 6 is fixedly connected to the top of the L-shaped bracket 5. An n-shaped bracket 7 is fixedly connected to the movable end of the motor 6. Cylinders 8 penetrate both sides of the outer wall of the n-shaped bracket 7. Clamping plates 9 are fixedly connected to the movable ends of the cylinders 8. A camshaft body 10 is installed on the opposite side of the two sets of clamping plates 9. By setting up the structure of two sets of cylinders 8 and clamping plates 9, the camshaft body 10 can be clamped and fixed. By setting up multiple sets of placement cavities 3, the number of measuring mechanisms 4 installed can be controlled according to the length of the groove surface of the camshaft body 10. When the camshaft body 10 is fixed on the clamping plate 9, In the multi-measuring mechanism 4, the outer wall of the guide wheel 47 can be tightly attached to the groove surface of the camshaft body 10. At the same time, the hollow column 43 will move downward when squeezed, thereby pushing the contact rod 49 to the area of ​​the insulating plate 410. When the motor 6 rotates the clamped camshaft body 10, the outer wall of the guide wheel 47 will also slide tightly against the groove surface of the camshaft body 10. When the groove surface of the camshaft body 10 is uneven, the hollow column 43 will slide the contact rod 49 on one side of the slide frame 48 upward or downward, and at the same time, the contact rod 49 will touch the contact sensor 411. Then the alarm 412 will sound to remind the staff.

[0036] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A fixture for measuring the flatness of a camshaft groove surface, comprising a placement stage (1), characterized in that: The bottom of the outer walls on both sides of the placement platform (1) is fixedly connected to a U-shaped bracket (2). The top of the placement platform (1) has multiple sets of vertically penetrating placement cavities (3). A measuring mechanism (4) is installed in the placement cavity (3). An L-shaped bracket (5) is fixedly connected to the top of one side of the outer wall of the U-shaped bracket (2). A motor (6) is fixedly connected to the top of the L-shaped bracket (5). An n-shaped bracket (7) is fixedly connected to the movable end of the motor (6). Cylinders (8) penetrate both sides of the outer walls of the n-shaped bracket (7). Clamping plates (9) are fixedly connected to the movable ends of the cylinders (8). Camshaft bodies (10) are installed on the opposite sides of the two sets of clamping plates (9).

2. The camshaft groove surface flatness measuring fixture according to claim 1, characterized in that: The measuring mechanism (4) includes an outer frame (41), the inner wall of the placement cavity (3) is sleeved with the outer wall of the outer frame (41), and the inner wall of the outer frame (41) is fixedly connected with a housing (42). A square hole is opened at the top center of the housing (42), and a hollow column (43) is slidably connected to the inner wall of the square hole.

3. The camshaft groove surface flatness measuring fixture according to claim 2, characterized in that: Ventilation holes (44) are provided at the top of the outer walls on both sides of the hollow column (43), and inserts (45) are fitted onto the top of the inner walls of the hollow column (43). Roller plates (46) are fixedly connected to the top of the inserts (45).

4. The camshaft groove surface flatness measuring fixture according to claim 3, characterized in that: The top of each roller plate (46) is provided with a roller groove, and the inner wall of each roller groove is rotatably connected with a guide wheel (47). The opposite surfaces of two adjacent sets of guide wheels (47) can slide close together.

5. The camshaft groove surface flatness measuring fixture according to claim 2, characterized in that: The bottom of the outer wall of the hollow column (43) is fixedly connected to a sliding frame (48), and a contact rod (49) is fixedly connected to one side of the outer wall of the sliding frame (48). An insulating plate (410) passes through the center of one side of the inner wall of the housing (42).

6. The camshaft groove surface flatness measuring fixture according to claim 5, characterized in that: The top and bottom of the insulating plate (410) are fixedly connected to a contact sensor (411). The outer wall of the insulating plate (410) and the contact sensor (411) on the same side are slidably connected to the top of the contact rod (49). The outer wall of the contact sensor (411) on the other side is fixedly connected to an alarm (412).

7. The camshaft groove surface flatness measuring fixture according to claim 2, characterized in that: Both ends of the bottom of the housing (42) are fixedly connected with threaded rods (413), and a baffle (414) is sleeved on the top of the outer wall of the threaded rod (413). Nuts (415) are threadedly connected to the bottom of the outer wall of the threaded rod (413).

8. The camshaft groove surface flatness measuring fixture according to claim 7, characterized in that: Each baffle (414) is fixedly connected to a limiting rod (416) at the top center. The top of the outer wall of the limiting rod (416) is slidably connected to the inner wall of the hollow column (43). Each limiting rod (416) is fitted with a reset spring (417) at the bottom of the outer wall.

Images