A roughness auxiliary measurement jig

Abstract

The utility model relates to roughness group measurement jig technical field, especially roughness auxiliary measurement jig. Include: the support platform for the annular workpiece is received, set up in the support platform is used for driving the rotation mechanism of annular workpiece rotation, the movable fixed establishment that is used for fixing annular workpiece is symmetrically arranged below the two sides of annular workpiece and is set up in the measurement mechanism of annular workpiece front, when measuring roughness, the end of probe just abuts on the annular surface of annular workpiece, the rotation mechanism is installed on the inclined plate of support platform. The utility model provides a roughness auxiliary measurement jig with the advantages of accurate measurement result, high measurement efficiency, wide application range, stable overall structure, good firmness, simple operation and convenient use.

Description

Technical Field

[0001] This utility model relates to the field of roughness measurement fixtures, and in particular to an auxiliary roughness measurement fixture. Background Technology

[0002] A surface roughness tester, also known as a surface roughness meter, surface finish tester, surface roughness detector, roughness measuring instrument, roughness gauge, roughness tester, etc., features high measurement accuracy, wide measurement range, simple operation, portability, and stable operation. It can be widely used for the inspection of various metal and non-metal processed surfaces. Current technology adopts contact roughness measurement, which measures the surface roughness of a workpiece by having a probe contact the workpiece surface. However, because the probe's movement trajectory requires horizontal movement, it results in a situation where "the sampling point is not suitable for curved surfaces," making it impossible to effectively control the "roughness" of the top of the workpiece. Chinese patent CN223580965U discloses a device for measuring the surface roughness of sandblasted steel pipes, relating to the field of steel pipe sandblasting. The device includes a base with side plates fixedly connected to both ends. Each end of the base has a placement seat. A fixed rod is fixedly connected between the two side plates, and a movable block is slidably connected to the fixed rod. A laser detection head is mounted on the movable block. This invention, through the coordinated operation of components such as an electric cylinder, rack, gear, and main shaft, enables quick adjustment of different measurement angles for steel pipe fittings. This means that the surface roughness of the sandblasted steel pipe can be measured from multiple angles. By inserting two inner support plates into one end of the fitting, starting the main motor causes its output end to drive the internal shaft to rotate, causing the two inner support plates to move in opposite directions and press against the inner wall of the fitting, thus securing the fitting and facilitating subsequent adjustment of the measurement angle by rotating the fitting.

[0003] However, this technical solution is only applicable to steel pipes of a specific single size. It is not applicable to steel pipes of different sizes, nor is it applicable to some large ring-shaped workpieces. It has great limitations. In addition, the moving block is threadedly connected to the screw, which wears a lot after long-term use, resulting in the laser head being unstable and prone to shaking, thus affecting the measurement results. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a roughness auxiliary measuring fixture. Through a rotation mechanism and a measuring mechanism, the entire annular surface (i.e., the outer arc surface) of the annular workpiece can be measured without the need for secondary positioning and repeated disassembly and assembly, thereby improving measurement efficiency. It can also meet the customer's requirement to increase the number of sampling points at any time and solve the problem of limited dimensional applicability in existing technologies.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A roughness auxiliary measuring fixture includes: a support platform for receiving a ring-shaped workpiece; a rotating mechanism disposed on the support platform for driving the ring-shaped workpiece to rotate; a movable fixing mechanism symmetrically disposed on both sides below the ring-shaped workpiece for fixing the ring-shaped workpiece; and a measuring mechanism disposed in front of the ring-shaped workpiece. The measuring mechanism includes: a mounting base disposed close to the base plate of the support platform; a receiving plate slidably connected to the mounting base; a probe slidably connected to the receiving plate; and a controller disposed on one side of the receiving plate and connected to the probe. When measuring roughness, the end of the probe just abuts against the annular surface of the ring-shaped workpiece. The rotating mechanism is mounted on the inclined plate of the support platform.

[0006] Preferably, the tilting direction of the inclined plate of the support platform is parallel to the placement direction of the annular workpiece, and the included angle between the inclined plate and the base plate is greater than 90 degrees.

[0007] Preferably, the probe is slidably disposed in the groove in the middle of the receiving plate, and the two are compatible in shape and size.

[0008] Preferably, the rotating mechanism includes: a first driving member disposed on one side of the support platform, a first gear disposed at the output end of the first driving member, a second gear disposed above the first gear and meshing with the first gear, a transmission shaft fixedly connected to the second gear and completely penetrating the inclined plate, a bearing disposed on the inclined plate and sleeved on the transmission shaft, a positioning component disposed at the end of the transmission shaft, and a locking component disposed adjacent to the positioning component.

[0009] Preferably, the positioning component includes: a connecting seat disposed on the transmission shaft, a plurality of first electric push rods evenly disposed on the connecting seat, and a clamping block disposed on the first electric push rods, wherein the locking component is disposed on the adjacent side of the connecting seat.

[0010] Preferably, the locking assembly includes: a fixed base fixedly connected to the adjacent side of the connecting seat, a plurality of second electric push rods evenly arranged on the fixed base, and a locking block disposed at the end of the second electric push rods.

[0011] Preferably, the locking block is arc-shaped and adapts to the inner wall of the annular workpiece.

[0012] Preferably, the mounting base is provided with a plurality of sliding grooves adapted to the receiving plate.

[0013] Preferably, the movable fixing mechanism includes: a second driving member disposed on one side of the support platform, a ball screw mechanism disposed at the output end of the second driving member, a clamping member disposed above the movable seat of the ball screw mechanism, and a support limiting block disposed on the adjacent side of the clamping member for supporting the annular workpiece.

[0014] Preferably, the base of the ball screw mechanism is provided with two guide rails, the top of the movable seat is slidably connected to the guide rails, and the bottom of the movable seat is threadedly connected to the screw of the ball screw mechanism.

[0015] The beneficial effects of this utility model are as follows: (1) This utility model uses a rotating mechanism and a measuring mechanism to make the entire annular surface (i.e., the outer arc surface) on the annular workpiece can be measured without secondary positioning and repeated disassembly and assembly, thereby improving measurement efficiency and meeting the customer's requirement to increase the number of sampling points at any time; the entire fixture integrates multiple functions such as clamping, positioning, rotation and measurement into one fixture, which solves the four major pain points of handheld roughness testers on annular workpieces: difficult positioning, few measuring points, poor repeatability and low efficiency. With the assistance of this fixture, effective, stable and accurate measurement can be achieved, making the measured data more accurate and effective.

[0016] (2) This utility model combines the sliding connection of the receiving plate to the mounting base and the sliding placement of the probe on the receiving plate, so that the position of the probe can be adjusted at any time to suit ring workpieces of different sizes or types. It can be adjusted according to actual usage needs, with a wide range of applications and convenient use, thereby ensuring that the obtained measurement data is more detailed, logically rigorous, and reliable.

[0017] (3) This utility model uses a ball screw mechanism to control the position of the clamping part, which can ensure the stability of the transmission and prevent the position from easily shifting. This allows the clamping part to accurately clamp the ring-shaped workpiece. At this time, the stationary workpiece can be measured directly. When it is necessary to measure the rotating workpiece, the clamping part needs to be released and then moved away from the workpiece. At this time, the workpiece is rotated and the probe can measure the roughness of the ring surface simultaneously. The whole process is simple to operate and convenient to use.

[0018] In summary, this utility model has the advantages of accurate measurement results, high measurement efficiency, wide applicability, stable and robust overall structure, simple operation and convenient use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the installation of the rotating mechanism of this utility model; Figure 3 This is a schematic diagram of the installation of the movable fixing mechanism of this utility model; Figure 4 This is a schematic diagram of the installation of the mounting base of this utility model. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," 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. They do not indicate or imply that the device or component 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] Example like Figures 1-4As shown, this embodiment provides a roughness auxiliary measurement fixture, including: a support platform 1 for receiving an annular workpiece 100, a rotating mechanism 2 disposed on the support platform 1 for driving the annular workpiece 100 to rotate, a movable fixing mechanism 3 symmetrically disposed on both sides below the annular workpiece 100 for fixing the annular workpiece 100, and a measuring mechanism 5 disposed in front of the annular workpiece 100. The rotating mechanism 2 is mounted on the inclined plate 12 of the support platform 1. The rotating mechanism 2 and the measuring mechanism 5 enable the entire annular surface (i.e., the outer arc surface) of the annular workpiece 100 to be measured without secondary positioning and repeated disassembly and assembly, thereby improving measurement efficiency and being able to meet the customer's requirement to increase the number of sampling points at any time. By integrating multiple functions such as clamping, positioning, rotation, and measurement into one fixture, it solves the four major pain points of handheld roughness testers on annular workpieces 100 (such as sealing rings, gear rings, etc.): difficulty in positioning, few measuring points, poor repeatability, and low efficiency. With the assistance of this fixture, effective, stable, and accurate measurement can be achieved, making the measured data more accurate and effective.

[0023] The measuring mechanism 5 includes: a mounting base 51 disposed close to the base plate 11 of the support platform 1; a receiving plate 52 slidably connected to the mounting base 51; a probe 53 slidably connected to the receiving plate 52; and a controller 54 disposed on one side of the receiving plate 52 and connected to the probe 53. When measuring roughness, the end of the probe 53 just abuts against the annular surface of the annular workpiece 100. That is, the position of the receiving plate 52 on the mounting base 51 is adjustable, and the position of the probe 53 on the receiving plate 52 is also adjustable, thereby ensuring that the obtained measurement data is more detailed, logically rigorous, and reliable. Moreover, the two are used together (specifically, they can be moved manually), so that the position of the probe 53 can be adjusted at any time to suit annular workpieces 100 of different sizes or types. That is, it can be adjusted according to actual usage needs, with a wide range of applications and convenient use. The receiving plate 52 is U-shaped, symmetrically distributed on both sides, concave in the middle, and horizontally set at both ends, which can better install the probe 53.

[0024] Meanwhile, the tilting direction of the inclined plate 12 of the support platform 1 is parallel to the placement direction of the annular workpiece 100, which facilitates debugging, allows visual observation of the contact situation, and facilitates adjustment; and the included angle between the inclined plate 12 and the base plate 11 is greater than 90 degrees, generally preferably 120 degrees, which facilitates the measurement of the probe 53 and allows direct observation of the position of the probe 53 for subsequent adjustment.

[0025] In this embodiment, the probe 53 is slidably disposed in the groove 521 in the middle of the receiving plate 52, and the two are matched in shape and size to ensure that the probe 53 slides smoothly and without obstruction in the groove 521. Generally, the position of the probe 53 can be changed by manually pushing it, so as to accurately and effectively sample the top arc surface area of ​​the workpiece. This can effectively avoid the situation where the roughness measurement value cannot be controlled due to human operation because the probe 53 cannot be placed stably on the arc surface.

[0026] In this embodiment, the rotating mechanism 2 includes: a first driving member 21 disposed on one side of the support platform 1; a first gear 22 disposed at the output end of the first driving member 21; a second gear 23 disposed above the first gear 22 and meshing with the first gear 22; a transmission shaft 24 fixedly connected to the second gear 23 and completely penetrating the inclined plate 12; a bearing 25 disposed on the inclined plate 12 and sleeved on the transmission shaft 24; a positioning component 26 disposed at the end of the transmission shaft 24; and a locking component 27 disposed adjacent to the positioning component 26. The gear transmission structure is compact, saves space, has strong load-bearing capacity, and can also ensure the rotation speed of the annular workpiece 100, making its rotation smooth and avoiding excessive speed from affecting the measurement results, thereby reducing measurement errors and ensuring measurement accuracy.

[0027] In this embodiment, the positioning component 26 includes: a connecting seat 261 disposed on the transmission shaft 24, a plurality of first electric push rods 262 evenly disposed on the connecting seat 261, and clamping blocks 263 disposed on the first electric push rods 262. The locking component 27 is disposed on the adjacent side of the connecting seat 261. The connecting seat 261 is used to install and support the annular workpiece 100, and then fix it once by the clamping block 263. The first electric push rods 262 allow the position of the clamping block 263 to be adjusted to suit annular workpieces 100 of different sizes or types.

[0028] In this embodiment, the locking assembly 27 includes: a fixed base 271 fixedly connected to the adjacent side of the connecting seat 261, a plurality of second electric push rods 272 evenly arranged on the fixed base 271, and a locking block 273 disposed at the end of the second electric push rods 272. The fixed base 271 is used to fix the annular workpiece 100, and then the locking block 273 is used for secondary fixation. The second electric push rods 272 allow the position of the locking block 273 to be adjusted to suit annular workpieces 100 of different sizes or types.

[0029] In this embodiment, the locking block 273 is arc-shaped and adapts to the inner wall of the annular workpiece 100, ensuring the contact area between the locking block 273 and the inner wall of the annular workpiece 100. This ensures that the locking block 273 clamps the annular workpiece 100 with uniform and stable force, preventing easy displacement and thus ensuring the stability and firmness of the annular workpiece 100 when it rotates.

[0030] In this embodiment, the connecting seat 261 and the fixed seat 271 can be directly welded together or fixed with bolts to ensure that their movement states are the same so that they can rotate synchronously with the transmission shaft 24 and thus drive the annular workpiece 100 to rotate.

[0031] In this embodiment, both the first electric push rod 262 and the second electric push rod 272 convert electrical energy into mechanical energy through a motor, which can achieve a large load with a small power, has high transmission efficiency, fast response speed, and is very convenient to control, thereby quickly positioning and fixing the annular workpiece 100.

[0032] In this embodiment, the mounting base 51 is provided with a plurality of sliding grooves 511 that are adapted to the receiving plate 52. The size of the sliding grooves 511 is adapted to the thickness of the receiving plate 52, so as to ensure that the receiving plate 52 can slide automatically on the mounting base 51.

[0033] In this embodiment, the movable fixing mechanism 3 includes: a second driving member 31 disposed on one side of the support platform 1, a ball screw mechanism 32 disposed at the output end of the second driving member 31, a clamping member 33 disposed above the movable seat 321 of the ball screw mechanism 32, and a support limiting block 34 disposed on the adjacent side of the clamping member 33 for supporting the annular workpiece 100. The movement of the clamping member 33 is controlled by the ball screw mechanism 32, which can ensure the stability of the transmission and prevent easy positional deviation, so that the clamping member 33 can accurately clamp the annular workpiece 100. The ball screw mechanism 32 moves smoothly and is easy to control. The clamping member 33 can preferably be a pneumatic gripper, and the contact position between the gripper and the annular workpiece 100 can be made of rubber pad to reduce wear.

[0034] Of course, the base 322 of the ball screw mechanism 32 is provided with two guide rails 323. The top of the movable seat 321 is slidably connected to the guide rail 323, and the bottom of the movable seat 321 is threadedly connected to the screw 324 of the ball screw mechanism 32. The second driving member 31 provides power to drive the screw 324 to rotate, thereby making the movable seat 321 slide on the guide rail 323. The whole process is simple to operate and easy to use. Moreover, the ball screw mechanism 32 is separated from the receiving plate 52, and the ball screw mechanism 32 and the probe 53 do not interfere with each other. There is a distance between them, so they will not affect each other when working together, which can ensure the accuracy of the measurement results.

[0035] In addition, the top of the support limiting block 34 is curved, which is adapted to the ring workpiece 100 and the two just abut against each other. When the ring workpiece 100 needs to be clamped and fixed, that is, when the roughness of a single position on the ring surface of the ring workpiece 100 is measured, the support limiting block 34 just abuts against the ring surface, which plays the role of supporting the ring workpiece 100 and preventing it from being directly suspended in the air, thereby ensuring the measurement accuracy. When the ring workpiece 100 needs to be rotated for measurement, the clamping member 33 needs to be released first, and then the clamping member 33 is moved away from the ring workpiece 100 by the ball screw mechanism 32. At this time, the probe 53 can measure the roughness of different positions on the outer arc surface of the ring workpiece 100.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A roughness auxiliary measuring fixture, characterized in that, include: A support platform for receiving a ring-shaped workpiece, a rotating mechanism mounted on the support platform for driving the ring-shaped workpiece to rotate, a movable fixing mechanism symmetrically arranged on both sides below the ring-shaped workpiece for fixing the ring-shaped workpiece, and a measuring mechanism located in front of the ring-shaped workpiece. The measuring mechanism includes: a mounting base disposed close to the base plate of the support platform, a receiving plate slidably connected to the mounting base, a probe slidably connected to the receiving plate, and a controller disposed on one side of the receiving plate and connected to the probe. When measuring roughness, the end of the probe just abuts against the annular surface of the annular workpiece. The rotating mechanism is mounted on the inclined plate of the support platform.

2. The roughness auxiliary measuring fixture according to claim 1, characterized in that, The tilting direction of the inclined plate is parallel to the placement direction of the annular workpiece, and the angle between the inclined plate and the base plate is greater than 90 degrees.

3. The roughness auxiliary measuring fixture according to claim 1, characterized in that, The probe is slidably disposed in the groove in the middle of the receiving plate, and the two are compatible in shape and size.

4. The roughness auxiliary measuring fixture according to claim 1, characterized in that, The rotating mechanism includes: a first driving member disposed on one side of the support platform, a first gear disposed at the output end of the first driving member, a second gear disposed above the first gear and meshing with the first gear, a transmission shaft fixedly connected to the second gear, a bearing disposed on the inclined plate and sleeved on the transmission shaft, a positioning component disposed at the end of the transmission shaft, and a locking component disposed adjacent to the positioning component.

5. The roughness auxiliary measuring fixture according to claim 4, characterized in that, The positioning component includes: a connecting seat disposed on the transmission shaft, a plurality of first electric push rods evenly disposed on the connecting seat, and a clamping block disposed on the first electric push rods, wherein the locking component is disposed on the adjacent side of the connecting seat.

6. The roughness auxiliary measuring fixture according to claim 5, characterized in that, The locking assembly includes: a fixed base fixedly connected to the adjacent side of the connecting seat, a plurality of second electric push rods evenly arranged on the fixed base, and a locking block disposed at the end of the second electric push rods.

7. The roughness auxiliary measuring fixture according to claim 6, characterized in that, The locking block is arc-shaped and fits the inner wall of the annular workpiece.

8. A roughness auxiliary measuring fixture according to claim 1, characterized in that, The mounting base is provided with several sliding grooves that are adapted to the receiving plate.

9. A roughness auxiliary measuring fixture according to claim 1, characterized in that, The movable fixing mechanism includes: a second driving member disposed on one side of the support platform, a ball screw mechanism disposed at the output end of the second driving member, a clamping member disposed above the movable seat of the ball screw mechanism, and a support limiting block disposed on the adjacent side of the clamping member for supporting the annular workpiece.

10. A roughness auxiliary measuring fixture according to claim 9, characterized in that, The ball screw mechanism has two guide rails on its base. The top of the movable seat is slidably connected to the guide rails, and the bottom of the movable seat is threadedly connected to the screw of the ball screw mechanism.

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