Automatic centering device
By using an infrared ranging sensor in conjunction with a support ring and an inner rotating ring, precise positioning and efficient detection of long cylindrical workpieces are achieved, solving the problems of large errors and complex operation in the measurement of long workpieces in existing devices, and improving production efficiency.
Patent Information
- Application Number
- CN202520566006.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Existing automatic centering devices are difficult to accurately position and inspect long cylindrical workpieces, resulting in large measurement errors and complex operation, which affects production efficiency.
An automatic centering device was designed. It uses an infrared ranging sensor to detect the distance change between the limiting plate and the workpiece. Combined with the lifting and lowering adjustment of the support ring and the inner rotating ring, it can realize the circumference detection of long cylindrical workpieces at different heights and angles, simplifying the operation process.
It improves the accuracy and efficiency of inspection of longer cylindrical workpieces, reduces labor intensity, and meets the requirements of high-precision production.
Smart Images
Figure CN223882942U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to centering device technical field, concretely is a kind of automatic centering device. BACKGROUND
[0002] In modern mechanical manufacturing, aerospace, automobile industry and many other fields, there is a very high requirement for the roundness and cylindricity measurement accuracy of cylindrical workpieces. Cylindricity measuring instrument, roundness measuring instrument and other measuring equipment, as the key instruments for detecting the shape accuracy of cylindrical workpieces, play a crucial role in ensuring product quality and performance.
[0003] However, in actual industrial production and measurement applications, there are some problems. On the one hand, with the continuous development of manufacturing industry, more and more cylindrical workpieces show longer size characteristics. Due to the longer length of the workpiece, different parts of the workpiece are difficult to be accurately positioned and detected during the measurement process, which seriously affects the comprehensiveness and accuracy of the measurement. For example, in the production of some key parts of large mechanical equipment, such as long shaft parts, due to their large length, the existing automatic centering device cannot guarantee that all parts of the entire cylindrical surface can be accurately detected, resulting in large errors in the measurement results and failing to meet the high-precision requirements of actual production. On the other hand, the existing automatic centering device is complex and inefficient when detecting different parts of longer cylindrical workpieces. Measurement personnel need to spend a lot of time and effort to adjust and position the workpiece multiple times, which not only increases the labor intensity, but also seriously affects the production efficiency.
[0004] Therefore, the utility model provides an automatic centering device. UTILITY MODEL CONTENT
[0005] In view of the shortcomings of the prior art, the utility model provides an automatic centering device to solve the above problems.
[0006] In order to achieve the above object, the utility model discloses a kind of automatic centering device, including support base, vertical lifting support is installed at the top of the support base, vertical lifting support one side is provided with support ring, inner rotating ring is rotatably connected in the inside of support ring, wherein, vertical lifting support one side is installed with horizontal plate, telescopic rod is installed on the horizontal plate, positioning press plate is installed at the bottom of telescopic rod, support ring one side is installed with connecting slide plate, connecting slide plate is slidably connected in the side wall of vertical lifting support, several extension guide covers are provided in the inside of inner rotating ring, sliding rod is slidably connected in the inner wall of several extension guide covers, inner slide groove is formed in the sliding rod, limit plate is slidably connected in the inner wall of inner slide groove, limit plate one side is fixedly connected with extrusion block, extrusion block is contacted with workpiece by one side spherical rolling body, reset spring that limit plate is pushed back is installed in the inner wall of inner slide groove, infrared distance sensor that limit plate position is detected is installed in the inner wall of sliding rod.
[0007] Preferably, the inner wall of the vertical lifting support is rotatably connected with a lifting screw, and the lifting screw is threadedly connected to the inner wall of the connecting slide plate.
[0008] Preferably, the top end of the support base is installed with a plurality of balls, and the plurality of balls are distributed in a circular array.
[0009] Preferably, the inner wall of the inner slide groove is installed with a limit ring, and the limit plate is in contact with one end of the limit ring.
[0010] Preferably, the inner side of the support ring is formed with an annular inner groove, the outer side of the inner rotating ring is installed with an outer gear ring, and the outer gear ring is rotatably connected to the inner wall of the annular inner groove.
[0011] Preferably, the inner wall of the inner rotating ring is rotatably connected with an inner gear ring and a plurality of position adjusting screws, one end of each of the plurality of position adjusting screws is fixedly connected with a bevel gear, and the inner gear ring is meshingly connected with each of the plurality of bevel gears.
[0012] Beneficial effects
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] The utility model detects the distance change between limit plate and infrared distance sensor, realizes the cylindrical degree detection of workpiece, controls support ring and inner rotating ring to adjust, and controls inner rotating ring to rotate in the inside of support ring, so that the plurality of sliding rods can detect the circumferential degree of different height and angle position area of longer cylindrical workpiece, which is simple and convenient to operate, improves work efficiency, and without measuring personnel spending a lot of time and effort to adjust and position workpiece many times, not only reduces labor intensity, but also improves production efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a three-dimensional structure schematic diagram of the utility model;
[0016] Figure 2 is the utility model's Figure 1 is a partial enlarged structure schematic diagram of position A in the utility model;
[0017] Figure 3 is a three-dimensional sectional enlarged structure schematic diagram of the inner rotating ring in the utility model;
[0018] Figure 4 is the utility model's Figure 3 is a partial enlarged structure schematic diagram of position B in the utility model;
[0019] Figure 5 is a three-dimensional enlarged sectional structure schematic diagram of the supporting ring of the utility model.
[0020] In the drawing: 1, supporting base; 11, ball; 2, vertical lifting support; 21, horizontal plate; 22, telescopic rod; 23, positioning pressing plate; 24, lifting screw; 3, supporting ring; 31, connecting sliding plate; 32, annular inner groove; 4, inner rotating ring; 41, extension guide cover; 42, sliding rod; 421, inner sliding groove; 422, limiting ring; 43, limiting plate; 44, extrusion block; 441, spherical rolling body; 45, return spring; 46, infrared distance measuring sensor; 47, outer tooth ring; 48, inner tooth ring; 49, position adjusting screw; 491, bevel gear. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0022] Please refer to Figures 1-5 , an automatic centering device, including supporting base 1, supporting base 1 top end is installed with vertical lifting support 2, vertical lifting support 2 one side is provided with supporting ring 3, supporting ring 3 inner side is rotatably connected with inner rotating ring 4.
[0023] Among them, vertical lifting support 2 one side is installed with horizontal plate 21, horizontal plate 21 is installed with telescopic rod 22, telescopic rod 22 bottom end is installed with positioning pressing plate 23, supporting ring 3 one side is installed with connecting sliding plate 31, connecting sliding plate 31 is slidably connected in vertical lifting support 2 side wall.
[0024] It needs explanation that the cross plate 21 described in the embodiment is flush with the top of the vertical lifting support 2, and the bottom of the positioning pressing plate 23 is provided with an antiskid pad.
[0025] The inner side of the inner rotating ring 4 is provided with a plurality of extension guide covers 41, the inner walls of the plurality of extension guide covers 41 are all slidably connected with slide rods 42, the slide rods 42 are provided with inner slide grooves 421, the inner walls of the inner slide grooves 421 are slidably connected with limiting plates 43, one side of each limiting plate 43 is fixedly connected with an extrusion block 44, and the extrusion block 44 is in contact with the workpiece through a spherical rolling body 441.
[0026] It needs explanation that the plurality of slide rods 42 described in the embodiment synchronously slide to adjust the position.
[0027] The inner walls of the inner slide grooves 421 are mounted with return springs 45 for counter-pushing the limiting plates 43, and the inner walls of the slide rods 42 are mounted with infrared distance measuring sensors 46 for detecting the positions of the limiting plates 43.
[0028] Specifically, in order to solve the problem of inconvenient operation and low efficiency when detecting the cylindricity of a long cylindrical workpiece, the vertical lifting support 2 supports the telescopic rod 22 through the cross plate 21, the telescopic rod 22 drives the positioning pressing plate 23 to lift and adjust, the positioning pressing plate 23 clamps and positions the cylindrical workpiece placed on the support base 1, so that the workpiece remains in a stable position for detection, the support ring 3 moves in the vertical space between the support base 1 and the cross plate 21, and the support ring 3 is lowered to the lowest position to facilitate the taking and placing of the cylindrical workpiece; after the cylindrical workpiece is placed at the approximate center position of the support base 1, the support ring 3 and the inner rotating ring 4 are in a wrapped state around the periphery of the cylindrical workpiece, the support ring 3 supports and adjusts the lifting of the inner rotating ring 4, the inner rotating ring 4 cooperates with the plurality of extension guide covers 41 to realize the sliding guidance of the plurality of slide rods 42, the plurality of slide rods 42 slide synchronously, in the initial stage, the spherical rolling body 441 does not contact the cylindrical workpiece, the plurality of slide rods 42 are controlled to slide synchronously towards the cylindrical workpiece, so that the limiting plate 43 and the extrusion block 44 are close to the cylindrical workpiece, then the spherical rolling body 441 contacts one side of the cylindrical workpiece, with the advancement of the slide rod 42, the extrusion block 44 reversely extrudes the return spring 45, so that the extrusion block 44 and the limiting plate 43 are retracted into the sliding groove 421, until the limiting plate 43 directly acts force on the slide rod 42, so that the slide rod 42 can push the cylindrical workpiece, the plurality of slide rods 42 push the cylindrical workpiece to the center area, so that the centering work of the cylindrical workpiece is realized, then the telescopic rod 22 and the positioning pressing plate 23 extrude and lock the cylindrical workpiece, at this time, the slide rod 42 is withdrawn, the limiting plate 43 is pulled away from the infrared distance sensor 46 under the pushing of the return spring 45, when the infrared distance sensor 46 detects that the limiting plate 43 is pulled away by a set distance, the slide rod 42 stops retracting, the inner rotating ring 4 is controlled to rotate in the support ring 3, the distance change between the limiting plate 43 and the infrared distance sensor 46 is detected, so that the cylindricity detection of the workpiece is realized, and the support ring 3 drives the inner rotating ring 4 to lift and slide, so that the plurality of slide rods 42 can detect the circumferential degree of different height and angle positions of the long cylindrical workpiece, the operation is simple and convenient, the work efficiency is improved, the workpiece needs not to be adjusted and positioned for many times by the measuring personnel, the labor intensity is reduced, and the production efficiency is improved.
[0029] In an embodiment of the present application, as shown in Figures 1-5 The vertical lifting support 2 is provided with a motor for driving the lifting screw rod 24.
[0030] It should be noted that the vertical lifting support 2 is provided with a motor for driving the lifting screw rod 24.
[0031] Specifically, the lifting screw rod 24 is driven to rotate by the motor, the lifting screw rod 24 adjusts the lifting of the connecting slide plate 31 when rotating, so that the connecting slide plate 31 can drive the inner rotating ring 4 and other detection components to lift through the support ring 3, and then the work of detecting the cylindricity of the long cylindrical workpiece at different heights is completed.
[0032] In an embodiment of the utility model, as shown in Figures 1-5 The support base 1 is provided with a plurality of balls 11 at the top end, and the balls 11 are arranged in a circular array.
[0033] Specifically, when the cylindrical workpiece is placed on the support base 1, the support base 1 contacts the cylindrical workpiece through the balls 11, and when the slide rod 42 centers the cylindrical workpiece, the cylindrical workpiece slides on the balls 11, thereby reducing the friction resistance and friction resistance problems.
[0034] In an embodiment of the utility model, as shown in Figures 1-5 The inner sliding groove 421 is provided with a limiting ring 422 on the inner wall, and the limiting plate 43 contacts one end of the limiting ring 422.
[0035] It should be noted that the center space of the limiting ring 422 described in this embodiment corresponds to the position of the detection end of the infrared distance measuring sensor 46.
[0036] Specifically, the limiting ring 422 does not block and interfere with the detection of the infrared distance measuring sensor 46, and the limiting ring 422 does not contact the return spring 45. When the extrusion block 44 is contracted under the reaction force of the cylindrical workpiece, the limiting ring 422 abuts against the limiting plate 43, preventing the limiting plate 43 from contacting the infrared distance measuring sensor 46 and excessively compressing and damaging the return spring 45.
[0037] In an embodiment of the utility model, as shown in Figures 1-5 The support ring 3 is provided with an annular inner groove 32 on the inner side, and the outer gear ring 47 is installed on the outer side of the inner rotating ring 4 and is rotatably connected to the inner wall of the annular inner groove 32.
[0038] It should be noted that the connecting slide plate 31 described in this embodiment is provided with a motor and a gear meshing with the outer gear ring 47.
[0039] Specifically, the inner rotating ring 4 is limited inside the annular inner groove 32 through the outer gear ring 47, preventing the support ring 3 and the inner rotating ring 4 from accidentally detaching, ensuring stable use, rotating the gear through the motor, rotating the outer gear ring 47 through the gear, rotating the inner rotating ring 4 through the outer gear ring 47, and thus completing the cylindricity detection of the workpiece at different angle positions.
[0040] In an embodiment of the utility model, as shown in Figures 1-5As shown, the inner wall of the inner rotating ring 4 is rotationally connected with an inner tooth ring 48 and a plurality of position adjusting screws 49, one end of each of the plurality of position adjusting screws 49 is fixedly connected with a bevel gear 491, and the inner tooth ring 48 is in meshing connection with the plurality of bevel gears 491.
[0041] It should be noted that the inner rotating ring 4 in this embodiment is provided with a motor and a gear meshing with the side wall of the inner tooth ring 48.
[0042] Specifically, the gear is driven to rotate by the motor, the inner tooth ring 48 is driven to rotate by the gear, and the plurality of bevel gears 491 are driven to rotate by the inner tooth ring 48, so that the plurality of position adjusting screws 49 can simultaneously adjust the corresponding slide rods 42 to extend or retract, thereby facilitating the centering work of the cylindrical workpiece.
[0043] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.
[0044] Working principle: in use, first place the support ring 3 at the highest or lowest position, and then place the workpiece on the support base 1, then drive the gear to rotate by the motor, drive the inner tooth ring 48 to rotate by the gear, and drive the plurality of bevel gears 491 to rotate by the inner tooth ring 48, so that the plurality of position adjusting screws 49 can simultaneously extend the corresponding slide rods 42, so that the limiting plate 43 and the extrusion block 44 are close to each other, then the spherical rolling body 441 contacts one side of the cylindrical workpiece, and as the slide rod 42 advances, the extrusion block 44 reversely extrudes the return spring 45, so that the extrusion block 44 and the limiting plate 43 shrink into the sliding groove 421, until the limiting plate 43 directly acts on the slide rod 42, so that the slide rod 42 can push the cylindrical workpiece, and the plurality of slide rods 42 push the cylindrical workpiece to the center area, thereby achieving the centering work of the cylindrical workpiece, and then the telescopic rod 22 and the positioning pressing plate 23 extrude and lock the cylindrical workpiece, then the slide rod 42 shrinks into the inner rotating ring 4, and the limiting plate 43 is pulled away from the infrared distance measuring sensor 46 under the pushing of the return spring 45, then the detection is started, and the lifting screw 24 is driven to rotate under the driving of the motor, and the connecting slide plate 31 is adjusted in lifting when the lifting screw 24 rotates, so that the connecting slide plate 31 can drive the inner rotating ring 4 and other detection components to complete lifting through the support ring 3, thereby completing the detection of the roundness of the cylindrical workpiece of different heights, and the gear is driven to rotate by the motor, the outer tooth ring 47 is driven to rotate by the gear, and the inner rotating ring 4 is driven to rotate by the outer tooth ring 47, thereby completing the detection of the roundness of the workpiece at different angle positions.
[0045] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0046] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.
Claims
1. An automatic centering device comprising a support base (1), characterized in that, The support base (1) top end is provided with vertical lifting support (2), one side of vertical lifting support (2) is provided with support ring (3), the inner side of support ring (3) is rotatably connected with inner rotating ring (4), wherein, The vertical lifting support (2) is provided with a horizontal plate (21) on one side, the horizontal plate (21) is provided with a telescopic rod (22) on one side, the telescopic rod (22) is provided with a positioning pressing plate (23) on the bottom end, the support ring (3) is provided with a connecting sliding plate (31) on one side, and the connecting sliding plate (31) is slidably connected to the side wall of the vertical lifting support (2). The inner side of the inner rotating ring (4) is provided with a plurality of extension guide covers (41), the inner wall of the extension guide cover (41) is slidably connected with a slide rod (42), the slide rod (42) is provided with an inner sliding groove (421), the inner wall of the inner sliding groove (421) is slidably connected with a limiting plate (43), one side of the limiting plate (43) is fixedly connected with an extrusion block (44), and the extrusion block (44) is in contact with the workpiece through a spherical rolling body (441) on one side. The inner wall of the inner sliding groove (421) is provided with a reset spring (45) for pushing the limiting plate (43) in the opposite direction, and the inner wall of the slide rod (42) is provided with an infrared distance measuring sensor (46) for detecting the position of the limiting plate (43).
2. An automatic centering device according to claim 1, characterized in that The inner wall of the vertical lifting support (2) is rotatably connected with a lifting lead screw (24), and the lifting lead screw (24) is threadedly connected to the inner wall of the connecting sliding plate (31).
3. An automatic centering device according to claim 1, characterized in that The top end of the support base (1) is provided with a plurality of balls (11), and the plurality of balls (11) are arranged in a circular array.
4. The automatic centering device of claim 1, wherein The inner wall of the inner sliding groove (421) is provided with a limiting ring (422), and the limiting plate (43) is in contact with one end of the limiting ring (422).
5. The automatic centering device of claim 1, wherein The inner side of the support ring (3) is provided with an annular inner groove (32), the outer side of the inner rotating ring (4) is provided with an outer gear ring (47), and the outer gear ring (47) is rotatably connected to the inner wall of the annular inner groove (32).
6. The automatic centering device of claim 1, wherein The inner wall of the inner rotating ring (4) is rotatably connected with an inner gear ring (48) and a plurality of position adjusting screws (49), one end of the plurality of position adjusting screws (49) is fixedly connected with a bevel gear (491), and the inner gear ring (48) is rotatably connected with the plurality of bevel gears (491).