Auxiliary device for machining sensor support

Abstract

The invention discloses a sensor support machining auxiliary device, and relates to the technical field of sensor support machining, the sensor support machining auxiliary device comprises a machine tool chassis, a fixing frame, a first clamping plate, a second clamping plate and two sets of hydraulic rods, the first clamping plate and the second clamping plate are vertically distributed to form a longitudinal and transverse crossed clamping structure, and the two-way locking requirement of the sensor support is met. Through cooperation of the fixing frame, the first clamping plate, the second clamping plate and the hydraulic rod, longitudinal and transverse synchronous locking and fixing of the two-half type sensor support are achieved, the two-half type sensor support is forced to be tightly attached, a gap and relative displacement between parting surfaces are eliminated, center hole machining is conducted on the sensor support in the whole simulation state, and the machining efficiency is improved. The problem that in the prior art, the center hole is machined first and then cut open, so that the dividing face deviates is fundamentally solved, the roundness precision of one-time forming of the center hole is guaranteed, and the roundness requirement that the roundness of a high-precision sensor is smaller than or equal to + / -0.01 mm is met.

Description

Technical Field

[0001] This invention relates to the field of sensor support processing technology, specifically to an auxiliary device for sensor support processing. Background Technology

[0002] In fields such as industrial inspection and automation control, sensor supports serve as the core mounting carriers for sensors, and their structural precision directly determines the measurement accuracy and installation stability of the sensors. Two-piece sensor supports, due to their advantages of convenient assembly and disassembly and adaptability to complex installation environments, are widely used in high-precision testing scenarios requiring disassembly and assembly (such as pipeline pressure testing and equipment vibration monitoring). The core technical requirement for this type of support lies in the roundness accuracy of the central mounting hole. The sensor needs to be precisely positioned through this central hole. If the roundness deviation exceeds the allowable range (usually ≤±0.01mm), it will lead to uneven contact between the sensor and the inner wall of the support, resulting in unbalanced forces and causing problems such as measurement signal drift and loose installation, thus failing to meet the requirements of high-precision sensors.

[0003] In existing technologies, the manufacturing process of two-half sensor supports generally adopts the process of "first machining the center hole as a whole, and then cutting it in half along a preset dividing surface". The core defect of this process is that during the dividing process, regardless of whether wire cutting, sawing or milling is used, it is difficult to completely guarantee that the dividing surface is absolutely perpendicular to the axis of the center hole. Moreover, the cutting force during dividing can easily cause slight deformation of the blank, resulting in the dividing surface being offset, tilted or uneven. This offset of the dividing surface will directly lead to problems such as uneven thickness of the center hole wall of the two halves and misalignment of the hole wall after splicing. Specifically, when splicing the two halves of the support after cutting, the offset of the dividing surface will cause the originally machined circular center hole to form an "irregular ellipse" or a "stepped hole structure", ultimately causing the roundness deviation of the center hole to exceed the design threshold.

[0004] Further analysis reveals that the aforementioned defects in the existing process cannot be completely compensated for by subsequent finishing: on the one hand, when grinding the center hole of a single half after segmentation, the datum needs to be repositioned, which can easily introduce secondary positioning errors; on the other hand, if the tilt angle of the segmentation surface is large, it is difficult to restore the complete circular outline of the center hole even after grinding the hole wall; in addition, for two-half supports with thin walls or complex structures (such as center holes with steps or threads), the deformation and offset problems during the segmentation process are more prominent, resulting in a further increase in the roundness deviation of the center hole, which seriously restricts its application in high-precision sensor installation scenarios.

[0005] Therefore, the existing processing technology of "machining the center hole first and then cutting" has inherent defects and cannot effectively solve the problem of center hole roundness deviation caused by the offset of the dividing surface. It is difficult to meet the stringent requirements of high-precision sensors for support installation accuracy. There is an urgent need for a processing technology solution that can avoid the influence of the offset of the dividing surface and ensure the roundness accuracy of the center hole. Summary of the Invention

[0006] Based on this, the purpose of the present invention is to provide a sensor support processing auxiliary device to solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a sensor support processing auxiliary device, comprising a machine tool chassis, a fixing frame, a first clamping plate, a second clamping plate, and two sets of hydraulic rods;

[0008] The mounting bracket has an internal cavity for placing the two-part sensor support. The bottom of the cavity has a horizontal plane for providing a horizontal reference. The surface of the horizontal plane has an anti-slip and wear-resistant layer. The anti-slip and wear-resistant layer is made of ceramic coating material and has uniformly distributed micro anti-slip textures on its surface to increase the friction with the sensor support and prevent horizontal displacement during processing.

[0009] The first clamping plate is located inside the fixed frame and is slidably connected to it at one end. The second clamping plate is located inside the fixed frame and is slidably connected to it at one side. The first clamping plate and the second clamping plate are vertically distributed to form a longitudinal and transverse cross clamping structure, which is suitable for the bidirectional locking requirements of the sensor support.

[0010] Hydraulic rods are installed on the outer sides of the first and second clamping plates. The two sets of hydraulic rods work together to lock and fix the two halves of the sensor support in the longitudinal and transverse directions, forcing the two halves of the sensor support to fit tightly to eliminate the gap and relative displacement of the dividing surface, so that the sensor support is in a "simulated whole state" so that the machine tool can perform one-time forming of the center hole, avoiding the deviation of the center hole roundness caused by the offset of the dividing surface.

[0011] The mounting bracket also includes a first sliding hole and two sets of parallel first guide rails;

[0012] The first clamping plate has guide grooves on both sides of its bottom that are slidably connected to the two sets of first guide rails, and one side of the first clamping plate is located inside the first sliding hole and slidably connected to its hole wall, which plays the role of stabilizing the first clamping plate in the longitudinal direction to adapt to the clamping requirements.

[0013] The mounting bracket also includes a second sliding hole and four sets of parallel second guide rails;

[0014] The second clamping plate has four corner guide grooves at its four corners that are slidably connected to four sets of second guide rails. One end of the second clamping plate is located inside the second sliding hole and is slidably connected to the hole wall, which plays the role of stabilizing the second clamping plate in the lateral direction to adapt to the clamping requirements.

[0015] A through-hole is provided in the middle of the first clamping plate;

[0016] The diameter of the mating hole is adapted to the thickness of the second clamping plate, and the middle part of the second clamping plate passes through the mating hole and slides with its hole wall, so as to realize the cross-avoidance between the first clamping plate and the second clamping plate and avoid structural interference when the two move synchronously in the longitudinal and transverse directions.

[0017] The mounting bracket is fixedly installed on the top of the machine tool chassis, and the mounting bracket is detachably fixed to the machine tool chassis by multiple sets of locking blocks;

[0018] The fit clearance between the first guide rail and the guide bottom groove is ≤0.005mm, the fit clearance between the second guide rail and the four corner guide grooves is ≤0.005mm, and the surfaces of the first guide rail and the second guide rail are both chrome-plated.

[0019] Both sets of hydraulic rods are fixedly connected to the bracket and the fixed frame through the bracket, and the output end of the hydraulic rod is equipped with a pressure sensor;

[0020] The pressure sensor is electrically connected to an external controller, and the controller is signal-connected to the drive system of the hydraulic rod. It is used to detect the clamping force in real time and control the hydraulic rod to stop driving and enter the pressure holding state when the preset threshold is reached. The preset threshold range of the pressure sensor is 5-10N, which can be adaptively adjusted according to the material and thickness of the sensor support.

[0021] Both the first and second clamping plates have an elastic buffer layer on their inner sides. The elastic buffer layer is made of polyurethane and its surface is adapted to the outer contour of the sensor support. This is used to avoid surface scratches caused by hard contact during clamping and to improve the clamping fit.

[0022] The lengths of the first and second guide rails can be adapted and adjusted according to the specifications and dimensions of the sensor support. The clamping surface dimensions of the first and second clamping plates can be made compatible with multiple specifications by replacing the adapter module.

[0023] In summary, the present invention has the following main beneficial effects:

[0024] 1. This invention achieves synchronous longitudinal and transverse locking and fixing of the two-half sensor support through the cooperation of the fixing frame, the first clamping plate, the second clamping plate and the hydraulic rod, forcing the two-half sensor support to fit tightly together, eliminating the gap and relative displacement between the split surfaces, and allowing the sensor support to be machined in a "simulated whole state". This fundamentally avoids the problem of split surface offset caused by "machining the center hole first and then cutting" in the existing process, and ensures the roundness accuracy of the center hole formed in one step, meeting the roundness requirement of ≤±0.01mm for high-precision sensors.

[0025] 2. This invention further improves the accuracy and stability of clamping and positioning through multiple precision guiding structures (first guide rail and guide bottom groove, second guide rail and four corner guide grooves), pressure sensor force control, anti-slip and wear-resistant layer, etc., avoiding support displacement or deformation during processing. At the same time, it is compatible with the processing of two-half sensor supports of different specifications and sizes, which broadens the application range of the device, simplifies the processing process, reduces secondary positioning errors, and improves processing efficiency and finished product qualification rate. Attached Figure Description

[0026] Figure 1 This is an exploded view of the entire invention;

[0027] Figure 2 This is an enlarged view of the structure of the fixing frame of the present invention;

[0028] Figure 3 This is an enlarged view of the structure of the first clamping plate of the present invention;

[0029] Figure 4 This is an enlarged view of the structure of the second clamping plate of the present invention;

[0030] Figure 5 This is a schematic diagram of the overall installation state of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure after the center hole of the sensor support of the present invention has been machined.

[0032] In the diagram: 1. Fixing frame; 101. Placement cavity; 102. Placement plane; 103. First sliding hole; 104. Second sliding hole; 105. Second guide rail; 106. First guide rail; 2. First clamping plate; 201. Guide bottom groove; 202. Mating hole; 3. Second clamping plate; 301. Four corner guide grooves; 4. Hydraulic rod; 5. Locking block; 6. Sensor support; 7. Machine tool chassis. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] The embodiments of the present invention will now be described.

[0035] Example 1

[0036] A sensor support processing auxiliary device, such as Figures 1-6 As shown, it includes a machine tool chassis 7, a fixed frame 1, a first clamping plate 2, a second clamping plate 3, two sets of hydraulic rods 4, multiple sets of locking blocks 5, a pressure sensor, an external controller, and a drive system;

[0037] The mounting bracket 1 is detachably fixed to the machine tool chassis 7 by multiple sets of locking blocks 5. The mounting bracket 1 has a placement cavity 101 for placing the two-half sensor support 6. The bottom of the placement cavity 101 has a placement plane 102 for providing a horizontal reference. The surface of the placement plane 102 is provided with a ceramic coating material anti-slip and wear-resistant layer. The surface of the anti-slip and wear-resistant layer is provided with uniformly distributed micro anti-slip textures.

[0038] The mounting bracket 1 also includes a first sliding hole 103, a second sliding hole 104, two sets of parallel first guide rails 106 and four sets of parallel second guide rails 105. The first guide rails 106 and the second guide rails 105 are perpendicular to each other and their surfaces are all chrome-plated.

[0039] The bottom sides of the first clamping plate 2 are provided with guide grooves 201 that slide with the two sets of first guide rails 106. One end of the first clamping plate 2 passes through the corresponding first sliding hole 103 and slides in connection with its hole wall. A through mating hole 202 is provided on one side of the first clamping plate 2. An elastic buffer layer of polyurethane material is provided on the inner side of the first clamping plate 2. The surface of the elastic buffer layer is adapted to the outer contour of the sensor support 6.

[0040] The second clamping plate 3 has four corner guide grooves 301 at its four corners that slide with the four sets of second guide rails 105. The two ends of the second clamping plate 3 are respectively inserted into the corresponding second sliding holes 104 and slidably connected to their hole walls. The middle part of the second clamping plate 3 is inserted into the mating hole 202 and slidably engaged with its hole wall. The inner side of the second clamping plate 3 is provided with an elastic buffer layer made of polyurethane, and the surface of the elastic buffer layer is adapted to the outer contour of the sensor support 6.

[0041] The first clamping plate 2 and the second clamping plate 3 are vertically distributed to form a longitudinal and transverse cross clamping structure; both sets of hydraulic rods 4 are fixedly connected to the fixed frame 1 through the bracket, the output end of one set of hydraulic rods 4 is fixedly connected to the first clamping plate 2, and the output end of the other set of hydraulic rods 4 is fixedly connected to the second clamping plate 3.

[0042] The output end of the hydraulic rod 4 is equipped with a pressure sensor, the pressure sensor model is PT124G-3101. The pressure sensor is electrically connected to the external controller via a shielded cable, the external controller model is STM32F103C8T6. The external controller is connected to the drive system of the hydraulic rod 4 via a signal cable. The drive system is used to drive the hydraulic rod 4 to move.

[0043] The fit clearance between the first guide rail 106 and the guide groove 201 is ≤0.005mm, and the fit clearance between the second guide rail 105 and the four corner guide grooves 301 is ≤0.005mm; the preset threshold range of the pressure sensor is 5-10N, which can be adaptively adjusted by an external controller according to the material and thickness of the sensor support 6.

[0044] Example 2

[0045] The difference between this embodiment and Embodiment 1 is that the lengths of the first guide rail 106 and the second guide rail 105 can be adapted and adjusted according to the specifications and dimensions of the sensor support 6. At the same time, the overall dimensions of the fixing frame 1 are adjusted so that the first clamping plate 2 and the second clamping plate 3 have a larger sliding stroke and better adapt to sensor supports 6 of different specifications and sizes. The clamping surface dimensions of the first clamping plate 2 and the second clamping plate 3 can achieve multi-specification compatibility by replacing the adapter module. The adapter module is detachably fixed to the first clamping plate 2 and the second clamping plate 3 by bolts. The rest of the structure is the same as that of Embodiment 1.

[0046] The adapter module has an elastic buffer layer inside that adapts to the outer contour of the sensor support 6 of different specifications. By replacing different adapter modules, clamping and processing of two-piece sensor supports 6 of various specifications and sizes can be realized, thus broadening the applicability of the device.

[0047] The working principle of the present invention is as follows: When in use, the sensor support 6 with the two halves of the center hole to be processed is attached and placed into the placement cavity 101 of the fixing frame 1, wherein the placement plane 102 serves to place the sensor support 6 horizontally.

[0048] At this time, the first set of hydraulic rods 4 drives the first clamping plate 2 to slide along the two sets of first guide rails 106, and the second set of hydraulic rods 4 drives the second clamping plate 3 to slide along the four sets of second guide rails 105, so that the sensor support 6 with the two halves of the center hole to be machined can be locked and fixed in the longitudinal and transverse directions, so that the split sensor support 6 is stably attached, which makes it easy for the machine tool to perform milling operation of the center hole from top to bottom on the split surface of the sensor support 6.

[0049] In detail, when using it, after roughly manually fitting the two halves of the sensor support 6 with the center hole to be processed, it is placed in the placement cavity 101 of the fixing frame 1. The anti-slip and wear-resistant layer on the surface of the placement plane 102 can initially limit the horizontal displacement of the support. At the same time, the horizontal design of the placement plane ensures that the support is in a horizontal position, avoiding initial placement deviation.

[0050] Subsequently, the external controller is activated to control the two sets of hydraulic rods 4 to work synchronously: the first set of hydraulic rods 4 drives the first clamping plate 2 to slide smoothly along the two sets of first guide rails 106, and the second set of hydraulic rods 4 drives the second clamping plate 3 to slide smoothly along the four sets of second guide rails 105. Since the first guide rail and the second guide rail are perpendicular to each other, the longitudinal and lateral locking and fixing of the sensor support 6 is achieved simultaneously. During the process, the pressure sensor at the output end of the hydraulic rod 4 detects the clamping force in real time. When the clamping force reaches the preset threshold, which is set according to the material and thickness of the sensor support 6, usually 5-10N, the controller sends a signal to stop the hydraulic rod 4 from driving. At this time, the hydraulic rod 4 enters the pressure holding state.

[0051] The fixing frame 1 is locked to the machine tool chassis 7 by multiple sets of locking blocks 5, which facilitates the milling machine tool to perform the machining operation of the center hole of the sensor support 6.

[0052] At this time, the two halves of the sensor support 6 are stably attached under the clamping of the first clamping plate 2 and the second clamping plate 3. There is no gap or relative displacement on the split surface, and it is in a stable state of "simulating the whole". The operator can visually monitor the processing status and start the machine tool to mill the center hole from top to bottom on the split surface of the sensor support 6.

[0053] After processing is completed, the hydraulic rod 4 is controlled to move in the opposite direction by the controller, which drives the first clamping plate 2 and the second clamping plate 3 to reset, so that the processed sensor support 6 can be taken out and the processing process is completed.

[0054] In summary, the placement plane 102 of the fixing frame 1 provides a horizontal reference for the two-part sensor support 6, ensuring that the overall posture of the sensor support 6 is regular after it is attached, and avoiding initial deviation due to placement tilt.

[0055] Two sets of hydraulic rods 4 are used to drive the first clamping plate 2 and the second clamping plate 3 respectively, and apply forces synchronously in the longitudinal and transverse directions along the corresponding guide rails, forcing the two halves of the sensor support 6 to fit tightly together, eliminating the gap and relative displacement between the split surfaces and the splicing surfaces.

[0056] The central hole is formed in one step under the "simulated overall state" after the two halves of the sensor support 6 are attached. The hole wall is continuous and smooth, which effectively avoids problems such as "irregular ellipse" and "hole wall steps" caused by the offset of the segmented surface. The roundness accuracy can meet the design requirements of high-precision sensors ≤ ±0.01mm.

[0057] Synchronous locking ensures that the six split surfaces of the two-part sensor support fit tightly together, and the center hole is not misaligned after splicing. When the sensor is installed, it fits evenly against the hole wall, and the force is balanced, avoiding problems such as measurement signal drift and loose installation.

[0058] There is no need to machine the overall center hole first and then divide it, nor is there a need to grind the hole wall afterwards. The center hole can be machined in one clamping, reducing secondary positioning errors and improving processing efficiency and finished product qualification rate.

[0059] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A sensor mount machining aid device, characterized by, Including machine tool chassis (7), fixed frame (1), first clamping plate (2), second clamping plate (3) and two groups of hydraulic rod (4); The fixed frame (1) is internally provided with a placement cavity (101) for placing the two-piece sensor support (6), and the bottom of the placement cavity (101) is provided with a placement plane (102) for providing a horizontal reference; The first clamping plate (2) is slidably connected to one end of the fixed frame (1), and the second clamping plate (3) is slidably connected to one side of the fixed frame, and the first clamping plate (2) and the second clamping plate (3) are vertically distributed to form a longitudinal and transverse cross clamping structure, which is suitable for the bidirectional locking requirement of the sensor support (6); The first clamping plate (2) and the second clamping plate (3) are provided with hydraulic rods (4) on the outer sides, and the two groups of hydraulic rods (4) act in concert to realize longitudinal and transverse synchronous locking and fixing of the two-piece sensor support (6), and forcibly make the two-piece sensor support (6) closely fit to eliminate the gap and relative displacement between the divided surfaces, so that the sensor support (6) is in a "simulated whole state" to facilitate the center hole one-time forming machining of the machine tool cutter, and avoid the center hole roundness deviation caused by the divided surface deviation.

2. The sensor mount machining aid of claim 1, wherein: The fixed frame (1) further comprises a first sliding hole (103) and two groups of first guide rails (106) parallel to each other; The first clamping plate (2) is provided with guide bottom grooves (201) on both sides of the bottom for slidably connecting with the two groups of first guide rails (106), and one side of the first clamping plate (2) is located in the first sliding hole (103) and slidably connected with the hole wall, which plays a role in stabilizing the longitudinal movement of the first clamping plate (2) to adapt to the clamping requirement.

3. The sensor carrier machining aid of claim 2, wherein: The fixed frame (1) further comprises a second sliding hole (104) and four groups of second guide rails (105) parallel to each other; The second clamping plate (3) is provided with four corner guide grooves (301) at the corners for slidably connecting with the four groups of second guide rails (105), and one end of the second clamping plate (3) is located in the second sliding hole (104) and slidably connected with the hole wall, which plays a role in stabilizing the transverse movement of the second clamping plate (3) to adapt to the clamping requirement.

4. The sensor carrier machining aid of claim 3, wherein: The first clamping plate (2) is provided with a through cooperation hole (202) in the middle; The hole diameter of the cooperation hole (202) is matched with the thickness of the second clamping plate (3), and the middle of the second clamping plate (3) is arranged in the cooperation hole (202) and slidably matched with the hole wall, which realizes the cross avoidance of the first clamping plate (2) and the second clamping plate (3), and avoids the structural interference when the two move longitudinally and transversely.

5. The sensor pedestal machining aid of claim 1, wherein: The fixed frame (1) is fixedly installed on the top of the machine tool chassis (7), and the fixed frame (1) is detachably fixed with the machine tool chassis (7) through a plurality of locking blocks (5).

6. The sensor pedestal machining aid of claim 1, wherein: The surface of the placement plane (102) is provided with an anti-skid wear-resistant layer, which is made of ceramic coating material and is provided with uniformly distributed micro anti-skid lines on the surface, which is used to increase the friction force with the sensor support (6) and prevent horizontal displacement during machining.

7. The sensor carrier machining aid of claim 3, wherein: The cooperation gap between the first guide rail (106) and the guide groove (201) is less than or equal to 0.005 mm, the cooperation gap between the second guide rail (105) and the four-corner guide groove (301) is less than or equal to 0.005 mm, and the surfaces of the first guide rail (106) and the second guide rail (105) are subjected to chrome plating treatment.

8. The sensor pedestal machining aid of claim 1, wherein: Both groups of the hydraulic rods (4) are fixedly connected with the fixing frame (1) through the supports, and the output ends of the hydraulic rods (4) are provided with pressure sensors; The pressure sensors are electrically connected with an external controller, and the controller is signal-connected with a driving system of the hydraulic rods (4), for real-time detection of the clamping force and control of the hydraulic rods (4) to stop driving and enter a pressure maintaining state when a preset threshold is reached, and the preset threshold range of the pressure sensors is 5-10 N, which can be adaptively adjusted according to the material and thickness of the sensor support (6).

9. The sensor pedestal machining aid of claim 1, wherein: The inner sides of the first clamping plate (2) and the second clamping plate (3) are both provided with elastic buffer layers made of polyurethane material, the surfaces of which are adapted to the outer contour of the sensor support (6), for avoiding surface scratches caused by hard contact during clamping and improving clamping adhesion.

10. The sensor pedestal machining aid of claim 3, wherein: The lengths of the first guide rail (106) and the second guide rail (105) can be adaptively adjusted according to the specifications and sizes of the sensor support (6), and the clamping surface sizes of the first clamping plate (2) and the second clamping plate (3) can be realized to be compatible with multiple specifications by replacing adaptive modules.

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