External diameter measuring device
By designing an outer diameter measuring device for guide components, fixing components, and moving components, the problem of accuracy in measuring the overall outer diameter of implantable medical devices was solved, and effective correction of ellipticity and curvature was achieved, ensuring the stability and accuracy of the measurement.
Patent Information
- Application Number
- CN202423244874.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing technologies cannot effectively measure the overall outer diameter of implantable medical devices, especially when the guiding catheter is elliptical or curved, leading to inaccurate measurements and missing data.
An outer diameter measuring device is designed, including a guide, a fixing component, and a moving component. By rotating and reciprocating, it can measure the outer diameter of the workpiece in multiple directions and straighten the workpiece to avoid shortening of its length due to bending.
It enables accurate measurement of the overall outer diameter of implantable medical devices, avoiding measurement errors and data loss caused by ellipticity and bending, and improving the stability and accuracy of the measurement.
Smart Images
Figure CN223649892U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to an outer diameter measuring device. Background Technology
[0002] In implantable medical devices, products such as stent delivery systems, guidewires, and catheters have strict requirements on their outer diameter.
[0003] Existing technologies typically use mechanical calipers to measure the outer diameter of the aforementioned products. However, this method can only measure a single cross-section of the product and has low measurement efficiency. Alternatively, an imaging device can be used to measure the outer diameter of the product. This device uses a high-definition camera and a light source matrix to image the product, and then uses configured system software to measure a single location on the product. Another method is to use a laser diameter gauge. However, regardless of whether mechanical calipers, imaging devices, or laser diameter gauges are used, they can only measure a single cross-section of the product and cannot measure the outer diameter of the entire product. Furthermore, in vascular interventional surgery, the guiding catheter needs to pass through the vascular sheath to enter the blood vessel. When the guiding catheter is elliptical, part of its outer diameter will be larger than the inner diameter of the vascular sheath, preventing the guiding catheter from entering the blood vessel. Additionally, its internal lumen may also be elliptical, preventing other catheters or instruments from passing through the guiding catheter. The aforementioned methods also cannot measure in different directions on a single cross-section of the product to detect whether the product is elliptical, nor can they solve the problem of the product's length shortening due to its own weight, resulting in missing data.
[0004] Therefore, it is necessary to develop an outer diameter measuring device to solve the above problems. Utility Model Content
[0005] In order to solve the above problems, the purpose of this utility model is to provide an outer diameter measuring device.
[0006] This utility model is achieved through the following technical solution:
[0007] An outer diameter measuring device, applied to a tubular part to be measured, comprising:
[0008] A guide component, wherein the axis of the guide component is parallel to the axis of the part to be measured in the same vertical plane;
[0009] A fixing component is detachably fixed to the first end of the test piece and movably connected to the guide member. The fixing component drives the first end of the test piece to move relative to the guide member along the axial direction of the guide member.
[0010] The motion component is detachably fixed to the second end of the test piece and detachably fixed to the second end of the guide piece;
[0011] A diameter measuring instrument includes a detection chamber and a diameter measuring component acting on the detection chamber. The detection chamber houses the part to be measured. A motion component drives the part to be measured to rotate around the axis of the part to be measured. The part to be measured rotates relative to the diameter measuring component of the diameter measuring instrument and drives the part to reciprocate along the axis of the part to be measured relative to the detection chamber.
[0012] In one possible implementation, the fixing component includes a first clamping member, and the moving component includes a second clamping member, wherein the first clamping member, the second clamping member, and the test piece are located on the same axis;
[0013] The first clamping member is detachably fixed to the first end of the test piece;
[0014] The second clamping member is detachably fixed to the second end of the test piece.
[0015] In one possible implementation, the first clamping member engages with the first end of the test piece, and the second clamping member engages with the second end of the test piece.
[0016] In one possible implementation, the fixing component includes a first slider and a first fixing member;
[0017] The first sliding member is fixedly connected to the first fixing member, and the first fixing member is rotatably connected to the first clamping member;
[0018] The first end of the guide is movably connected to the first slider, and the first slider moves along the guide to drive the first end of the test piece to move axially relative to the guide.
[0019] In one possible implementation, the fixing component includes a first rotating member, the first fixing member having a mounting hole, the first rotating member being fixedly connected to the mounting hole, and the first fixing member being rotatably connected to the first clamping member through the first rotating member;
[0020] The first rotating member has a through hole that cooperates with the first clamping member. One end of the first clamping member (31) is detachably fixedly connected to the through hole, and the fixed connection position between the first clamping member and the through hole is adjustable.
[0021] In one possible implementation, the first rotating member has a threaded hole with an internal thread, the first clamping member has an external thread that matches the internal thread, and the first rotating member is threadedly connected to the first clamping member.
[0022] The first clamping member is screwed in or out relative to the first rotating member to adjust the relative position of the test piece and the first rotating member.
[0023] In one possible implementation, the first slider is provided with a locking part, which restricts the relative movement between the guide and the test piece.
[0024] In one possible implementation, the motion component includes a first drive component;
[0025] The first driving component is rotatably connected to the end of the second clamping member that is away from the test piece;
[0026] Under the action of the first driving component, the second clamping member drives the second end of the test piece to rotate around the axis of the test piece in coordination with the test piece.
[0027] In one possible implementation, the device further includes a limiting member, which has a first mounting position and a second mounting position in the radial direction along the test piece;
[0028] The test piece passes through the first mounting position and is movably connected to the limiting member, and the first mounting position can limit the shaking of the test piece;
[0029] The guide member passes through the second mounting position and is movably connected to the limiting member, the second mounting position being able to limit the swaying of the guide member.
[0030] In one possible implementation, the detection cavity includes a detection area and a non-detection area;
[0031] The detection area accommodates a portion of the device to be tested, and the non-detection area at least partially accommodates the limiting member.
[0032] In one possible implementation, the device includes a shock absorber and a second sliding member;
[0033] The shock absorber is fixedly connected to the second sliding member, and the second sliding member has a third mounting position. The guide passes through the third mounting position and is slidably connected to the second sliding member.
[0034] In one possible implementation, the device includes a moving platform, and the motion component includes a third slider and a second fixing member;
[0035] The second fixing member is detachably fixed to the second end of the test piece and detachably fixed to the second end of the guide member;
[0036] The third sliding member is fixedly connected to the second fixing member, and the moving platform is slidably connected to the third sliding member. The third sliding member drives the second fixing member to move relative to the moving platform, and drives the test piece and the guide member to reciprocate along the axial direction of the test piece relative to the detection cavity.
[0037] This utility model has the following beneficial effects:
[0038] This utility model discloses an outer diameter measuring device, comprising a guide member, a fixing component, a moving component, and a diameter gauge. The guide member and the axis of the workpiece to be measured are parallel in the same vertical plane. The fixing component is detachably fixed to the first end of the workpiece to be measured and movably connected to the guide member. The fixing component drives the first end of the workpiece to be measured to move relative to the guide member along the axial direction of the guide member. The moving component is detachably fixed to the second end of the workpiece to be measured and detachably fixed to the second end of the guide member. The detection cavity of the diameter gauge accommodates part of the workpiece to be measured. The moving component drives the workpiece to rotate around its axis, causing the workpiece to rotate relative to the diameter gauge's side diameter component and also driving the workpiece to move. The component reciprocates along the axis of the test piece relative to the detection cavity. By employing the aforementioned outer diameter measuring device, the motion component drives the test piece to rotate around its axis, thereby enabling measurements to be taken in different directions of a single cross-section of the test piece to check for ellipticity. Simultaneously, the component reciprocates along the axis of the test piece relative to the detection cavity, enabling the measurement of the outer diameter of the entire test piece. The fixing component moves the first end of the test piece relative to the guide relative to the guide along the axial direction, thereby straightening the test piece and preventing it from bending due to its own weight, which would shorten the length of the test piece and cause missing detection data. Attached Figure Description
[0039] To more clearly illustrate the technical solutions and advantages in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0040] Figure 1 : A schematic diagram of the outer diameter measuring device provided in the embodiments of this disclosure.
[0041] Figure 2 : A schematic diagram of the outer diameter measuring device provided in the embodiments of this disclosure.
[0042] Figure 3 : Figure 1-2 Enlarged view of point A in the middle.
[0043] Figure 4: A schematic diagram of the outer diameter measuring device provided in the embodiments of this disclosure.
[0044] Figure 5 : A schematic diagram of the structure of the fixing component provided in the embodiments of this disclosure.
[0045] Figure 6 : A schematic diagram of the structure of the fixing component provided in the embodiments of this disclosure.
[0046] Figure 7 : A longitudinal cross-sectional view of the fixing component provided in the embodiments of this disclosure.
[0047] Figure 8 : A longitudinal cross-sectional view of the fixing component provided in the embodiments of this disclosure.
[0048] Figure 9 : A longitudinal cross-sectional view of the fixing component provided in the embodiments of this disclosure.
[0049] Figure 10 : A schematic diagram of the structure of the limiting member provided in the embodiments of this disclosure.
[0050] Figure 11 The outer diameter measurement data graph of the test piece provided in this embodiment of the present disclosure, wherein the horizontal axis is the acquisition frequency of the diameter measuring instrument, and the vertical axis is the measured outer diameter of the test piece.
[0051] In the figure: 1-Test piece, 2-Guide, 3-Fixing component, 31-First clamping component, 32-First sliding component, 33-First fixing component, 34-First rotating component, 341-Rotating part, 342-Fixing part, 4-Motion component, 41-Second clamping component, 42-First driving component, 43-Third sliding component, 44-Second fixing component, 5-Diameter gauge, 51-Detection chamber, 511-Detection area, 512-Non-detection area, 6-Limiting component, 601-First mounting part, 602-Second mounting part, 603-First connecting part, 604-Second connecting part, 605-First groove, 606-Second groove, 61-First mounting position, 62-Second mounting position, 621-Sliding part, 7-Shock absorber, 8-Second sliding component, 9-Moving platform. Detailed Implementation
[0052] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0053] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.
[0054] The embodiments are described below with reference to the accompanying drawings, which do not limit the disclosure described in the claims.
[0055] The following is in conjunction with the appendix Figure 1-11 This invention introduces an outer diameter measuring device provided by an embodiment of the present invention, which is applied to tubular parts to be measured, such as... Figure 1-2 As shown, it includes:
[0056] Guide component 2 is parallel to the axis of the component to be measured 1 in the same vertical plane;
[0057] The fixing component 3 is detachably fixed to the first end of the test piece 1 and movably connected to the guide 2. The fixing component 3 drives the first end of the test piece 1 to move relative to the guide 2 along the axial direction of the guide 2.
[0058] The motion component 4 is detachably fixed to the second end of the test piece 1 and detachably fixed to the second end of the guide piece 2;
[0059] The diameter measuring instrument 5 includes a detection cavity 51 and a diameter measuring component acting on the detection cavity 51. The detection cavity 51 houses a portion of the part to be measured 1. The motion component 4 drives the part to be measured 1 to rotate around the axis of the part to be measured 1. The part to be measured 1 rotates relative to the diameter measuring component of the diameter measuring instrument 5 and drives the part to be measured 1 to reciprocate along the axis of the part to be measured relative to the detection cavity 51.
[0060] Specifically, the test piece 1 can be a tubular product such as a catheter or guidewire in an implantable medical device, or it can be other types of tubular products. This application does not make any specific limitations here.
[0061] By employing the aforementioned outer diameter measuring device, the motion component 4 drives the test piece 1 to rotate around its axis, thereby enabling measurements to be taken in different directions of a single cross-section of the test piece 1 to check for ellipticity. Simultaneously, the test piece 1 is driven to reciprocate along the axial direction relative to the detection cavity 51, thereby enabling the measurement of the outer diameter of the entire test piece 1. The fixing component 3 drives the first end of the test piece 1 to move relative to the guide 2 along the axial direction, thereby straightening the test piece 1 and preventing it from bending due to its own weight, which would shorten the length of the test piece 1 and cause missing detection data. Here, a single cross-section refers to a cross-section perpendicular to the axial direction of the test piece 1, which can be either a cross section or a longitudinal section. The outer diameter refers to the diameter of the cross section. When the test piece 1 is in a straightened state, there is no obvious bending phenomenon in the overall test piece 1.
[0062] In some embodiments, such as Figure 1-3 As shown, the fixing component 3 includes a first clamping member 31, and the moving component 4 includes a second clamping member 41. The first clamping member 31, the second clamping member 41 and the test piece 1 are located on the same axis.
[0063] The first clamping member 31 is detachably fixed to the first end of the test piece 1;
[0064] The second clamping member 41 is detachably fixed to the second end of the test piece 1. By using the first clamping member 31 and the second clamping member 41 to connect to the first end and the second end of the test piece 1 respectively, the test piece 1 becomes more stable during the measurement process.
[0065] In some embodiments, such as Figure 1-3 As shown, the first clamping member 31 is snapped into the first end of the test piece 1, and the second clamping member 41 is snapped into the second end of the test piece 1. By using a snap-fit connection to connect the test piece 1, disassembly and installation become more convenient.
[0066] In some embodiments, such as Figure 5-8 As shown, the fixing component 3 includes a first sliding member 32 and a first fixing member 33;
[0067] The first sliding member 32 is fixedly connected to the first fixing member 33, and the first fixing member 33 is rotatably connected to the first clamping member 31;
[0068] The first end of the guide member 2 is movably connected to the first sliding member 32. The first sliding member 32 moves along the guide member 2 to drive the first end of the test piece 1 to move axially relative to the guide member 2. When the test piece 1 is highly flexible, it may bend due to its own weight, resulting in a shortening of the axial length of the test piece 1 and thus causing the problem of missing test data. Manually driving the first sliding member 32 to move along the guide member 2 and drive the first end of the test piece 1 to move relative to the guide member 2 can straighten the test piece 1 and put it in a straightened state to solve the above problem.
[0069] Specifically, the first fixing member 33 is rotatably connected to the end of the first clamping member 31 that is away from the moving component 4. At this time, the first clamping member 31 can rotate relative to the first fixing member 33, thereby causing one end of the test piece 1 to rotate relative to the first fixing member 33.
[0070] Specifically, the bottom of the first sliding member 32 is fixedly connected to the top of the first fixing member 33. The fixed connection method can be threaded connection, welding, etc. It is only necessary to connect the first sliding member 32 and the first fixing member 33. This application does not make specific limitations here.
[0071] In some embodiments, the first fastener 33 is T-shaped.
[0072] In some embodiments, the first slider 32 is provided with a locking part, which restricts the relative movement between the guide 2 and the test piece 1. During the movement of the first slider 32 along the guide 2, thereby causing the first end of the test piece 1 to move relative to the guide 2, the locking part is used to fix the first end of the test piece 1, which further straightens the test piece 1, making the test piece 1 more stable during measurement and improving the accuracy of the measurement.
[0073] Specifically, the first sliding member 32 is provided with a through hole, and the first end of the guide member 2 passes through the through hole to the side that extends beyond the first sliding member 32. The first end of the guide member 2 is slidably connected to the first sliding member 32.
[0074] For example, the first sliding member 32 can be a box-type linear bearing slider, and a set screw is provided in the through hole of the box-type linear bearing slider. The set screw can abut against the outside of the guide member 2 to limit the relative movement between the guide member 2 and the test piece 1. The first sliding member 32 can also be other bearing sliders with locking parts. This application does not make specific limitations here.
[0075] In some embodiments, such as Figure 4 As shown, the outer diameter measuring device includes a shock absorber 7 and a second sliding member 8;
[0076] The shock absorber 7 is fixedly connected to the second sliding member 8. The second sliding member 8 has a third mounting position. The guide member 2 passes through the third mounting position and is slidably connected to the second sliding member 8. The first end of the guide member 2, which extends beyond the first sliding member 32, can pass through the third mounting position and be slidably connected to the second sliding member 8. This avoids the problem that the guide member 2 may vibrate when the outer diameter is detected due to its excessive length, which could lead to a decrease in the accuracy of the detection.
[0077] Specifically, the second sliding member 8 can be a linear bearing slider.
[0078] Specifically, the shock absorber 7 and the second sliding member 8 can be fixedly connected by welding, threaded connection, etc., as long as the two are fixedly connected. This application does not make any specific limitation here.
[0079] In some embodiments, the outer diameter measuring device further includes a support platform located below the fixing component 3, with the side of the support platform near the guide 2 slidably connected to the fixing component 3.
[0080] Specifically, the support platform is slidably connected to the first fixing member 33, and the first fixing member 33 is able to move relative to the support platform.
[0081] In some embodiments, such as Figure 5-8 As shown, the fixing component 3 includes a first rotating member 34, a first fixing member 33 is provided with a mounting hole, the first rotating member 34 is fixedly connected in the mounting hole, and the first fixing member 33 and the first clamping member 31 are rotatably connected through the first rotating member 34.
[0082] The first rotating member 34 has a through hole that mates with the first clamping member 31. One end of the first clamping member 31 is detachably fixedly connected to the through hole, and the fixed connection position between the first clamping member 31 and the through hole is adjustable. With this configuration, the test piece 1 can be further straightened.
[0083] Specifically, the first rotating member 34 includes a rotating part 341 and a fixed part 342. The rotating part 341 is rotatably connected to the fixed part 342, and the rotating part 341 can rotate relative to the fixed part. The outer side of the fixed part 342 is fixedly connected to the mounting hole. The rotating part 341 has a through hole that cooperates with the first clamping member 31. One end of the first clamping member 31 is detachably fixedly connected to the through hole, and the fixed connection position between the first clamping member 31 and the through hole is adjustable. With the above configuration, on the one hand, one end of the first clamping member 31 can rotate relative to the first fixed member 33. On the other hand, since the fixed connection position between the first clamping member 31 and the through hole is adjustable, the end of the first clamping member 31 fixed in the through hole can be moved to adjust the relative position of the test piece 1 relative to the fixed part 342, thereby further straightening the test piece 1.
[0084] Specifically, one end of the first rotating member 34 passes through the mounting hole and is interference-fitted with the first fixing member 33.
[0085] In some embodiments, the first rotating member 34 is provided with a threaded hole with internal threads, and the first clamping member 31 is provided with an external thread that matches the internal thread, and the first rotating member 34 is threadedly connected to the first clamping member 31.
[0086] The first clamping member 31 can be screwed in or out relative to the first rotating member 34 to adjust the relative position of the test piece 1 and the first rotating member 34. This arrangement allows the test piece 1 to be screwed in or out relative to the first rotating member 34, thereby further straightening the test piece 1 and preventing the test piece 1 from bending due to its own weight, which would shorten the axial length of the test piece 1 and cause the problem of missing test data.
[0087] Specifically, the through hole of the rotating part 341 is provided with a threaded hole with internal thread, and the end of the first clamping member 31 is provided with an external thread that matches the internal thread.
[0088] For example, the first rotating element 34 can be a rolling bearing.
[0089] In this embodiment, the straightening process of the test piece 1 is as follows: the first sliding member 32 slides along the guide member 2 and drives the first end of the test piece 1 to move to the first fixed position. At this time, the test piece 1 is initially straightened. The first sliding member 32 is locked in the first fixed position by the locking part. The first clamping member 31 is rotated and the relative position of the first clamping member 31 and the first fixing member 33 is adjusted to further straighten the test piece 1. At this time, the test piece 1 has no obvious bending phenomenon.
[0090] In some embodiments, such as Figure 10 As shown, the outer diameter measuring device also includes a limiting member 6, which has a first mounting position 61 and a second mounting position 62 in the radial direction along the part to be measured 1.
[0091] The test piece 1 passes through the first mounting position 61 and is movably connected to the limiting member 6. The first mounting position 61 restricts the shaking of the test piece 1.
[0092] The guide member 2 passes through the second mounting position 62 and is movably connected to the limiting member 6, which restricts the swaying of the guide member 2. By using the limiting member 6, it is possible to prevent the problem of reduced accuracy caused by the tilting and swaying of the test piece 1 during the measurement process.
[0093] In some embodiments, such as Figure 10 As shown, the limiting member 6 includes a first mounting part 601 and a second mounting part 602 located above the first mounting part 601. The first mounting part 601 has a first mounting position 61 along the axial direction of the test piece 1. The test piece 1 passes through the first mounting position 61 and is movably connected to the limiting member 6. The second mounting part 602 has a second mounting position 62 along the axial direction of the test piece 1. The guide member 2 passes through the second mounting position 62 and is movably connected to the limiting member 6.
[0094] Specifically, the second mounting position 62 is provided with a sliding part 621, and the guide 2 passes through the second mounting position 62 and is slidably connected with the limiting member 6.
[0095] Specifically, the sliding part 621 can be a linear bearing.
[0096] In some embodiments, such as Figure 10 As shown, the limiting member 6 includes a first connecting part 603 and a second connecting part 604. The first connecting part 603 is provided with a first groove 605, and the second connecting part 604 is provided with a second groove 606. The outer diameter measuring device also includes a first fastener and a second fastener. The bottom of the detection cavity of the diameter gauge 5 is provided with a first mounting hole that mates with the first groove 605 and a second mounting hole that mates with the second groove 606. The first fastener passes through the first groove and the first mounting hole 605 and is fixedly connected to the diameter gauge 5. The second fastener passes through the second groove 606 and the second mounting hole and is fixedly connected to the diameter gauge 5.
[0097] Specifically, the first fastener and the second fastener can be mechanical components such as bolts, screws, and studs used for connection and fixation.
[0098] Specifically, both the first groove 605 and the second groove 606 are U-shaped grooves.
[0099] In some embodiments, the diameter gauge 5 is a laser diameter gauge.
[0100] In some embodiments, the outer diameter measuring device includes a first controller, which is electrically connected to a diameter measuring instrument 5. The first controller is used to send a first test signal to the diameter measuring instrument 5, and the diameter measuring instrument 5 is used to receive the first test signal and adjust to the corresponding acquisition frequency according to the first test signal.
[0101] In some embodiments, such as Figure 1-2 As shown, the diameter measuring instrument 5 includes a detection cavity 51 and a diameter measuring component acting on the detection cavity 51. The detection cavity 51 houses a portion of the part to be measured 1. The motion component 4 drives the part to be measured 1 to rotate around the axis of the part to be measured 1. The part to be measured 1 rotates relative to the diameter measuring component of the diameter measuring instrument 5 and drives the part to be measured 1 to reciprocate along the axis of the part to be measured relative to the detection cavity 51.
[0102] Specifically, the detection cavity 51 houses the test piece 1.
[0103] In some embodiments, such as Figure 2 As shown, the detection cavity 51 includes a detection area 511 and a non-detection area 512;
[0104] The detection area 511 accommodates part of the test piece 1, while the non-detection area 512 at least partially accommodates the limiting member 6. This arrangement not only prevents the test piece 1 from tilting and swaying, but also avoids the limiting member 6 from being too large and thus located in the detection area 511, thereby affecting the accuracy of the detection.
[0105] Specifically, the non-detection area 512 accommodates the limiting element 6. This can further improve the detection accuracy of the device.
[0106] In some embodiments, such as Figure 1-3 As shown, the outer diameter measuring device includes a moving platform 9, and the motion component 4 includes a third sliding member 43 and a second fixing member 44;
[0107] The second fixing member 44 is detachably fixed to the second end of the test member 1 and detachably fixed to the second end of the guide member 2;
[0108] The third sliding member 43 is fixedly connected to the second fixed member 44, and the moving platform 9 is slidably connected to the third sliding member 43. The third sliding member 43 drives the second fixed member 44 to move relative to the moving platform 9, and drives the test piece 1 and the guide member 2 to reciprocate along the axial direction of the test piece 1 relative to the detection cavity 51. With this arrangement, the test piece 1 and the guide member 2 can move synchronously, thereby enabling the diameter gauge 5 to detect the overall outer diameter of the test piece 1.
[0109] Specifically, the mobile platform 9 is provided with a slide rail, and the third sliding member 43 is provided with a slide groove that matches the slide rail. The third sliding member 43 is slidably connected to the mobile platform 9.
[0110] In some embodiments, such as Figure 3 As shown, motion component 4 includes a first drive component 42;
[0111] The first drive assembly 42 is rotatably connected to the end of the second clamping member 41 that is away from the test piece 1;
[0112] Under the action of the first driving component 42, the second clamping component 41 drives the second end of the test piece 1 to rotate around the axis of the test piece 1 in coordination with the test piece 1. Using the first driving component 42 to drive the rotation of the test piece 1 results in higher detection efficiency and enables measurement in different directions of a single cross-section of the test piece 1 to detect whether the product is elliptic.
[0113] Specifically, the first drive assembly 42 is disposed on the side of the second fixing member 43 away from the guide member 2.
[0114] In some embodiments, the second fixing member 44 is provided with a third mounting hole in the radial direction along the test member 1, the first driving assembly 42 is fixedly connected to the second fixing member 44, and one end of the second clamping member 41 passes through the third mounting hole and is rotatably connected to the first driving assembly 42.
[0115] In some embodiments, the first drive assembly 42 includes a second rotating member and a first drive member, the first drive member being fixedly connected to the second rotating member.
[0116] Specifically, the first driving component is a servo motor, and the second rotating component can be a coupling.
[0117] In some embodiments, the first drive unit is electrically connected to the first controller, the first controller is used to send a second test signal to the first drive unit, and the first drive unit is used to receive the second test signal and adjust to the corresponding speed according to the second test signal.
[0118] In some embodiments, the second fastener 44 has a fourth mounting hole in the radial direction along the part to be measured 1, and the outer diameter measuring device includes a third fastener;
[0119] The second end of the guide member 2 is provided with a connecting cavity with internal threads, and the third fastener is provided with an external thread that matches the internal thread. After passing through the fourth mounting hole, the third fastener is threadedly connected to the second end of the guide member 2.
[0120] Specifically, the third fastener can be a mechanical component used for connection and fixation, such as a bolt, screw, or stud.
[0121] In some embodiments, the outer diameter measuring device includes a second controller, a first controller electrically connected to the second controller, and a second controller electrically connected to a third slider 42. The first controller is used to send a third test signal to the second controller, and the second controller is used to receive the third test signal and control the sliding speed and sliding distance of the third slider 42 relative to the moving platform 9 according to the third test signal.
[0122] The following describes specific embodiments of this utility model based on the above technical solution.
[0123] Example 1
[0124] An outer diameter measuring device is applied to a tubular part to be measured 1, comprising: a guide 2, a fixing component 3, a moving component 4, a diameter measuring instrument 5, and a support platform, wherein the guide 2 and the axis of the part to be measured 1 are parallel in the same vertical plane;
[0125] The fixing component 3 includes a first clamping member 31, and the moving component 4 includes a second clamping member 41. The first clamping member 31, the second clamping member 41 and the test piece 1 are located on the same axis. The first clamping member 31 is engaged with the first end of the test piece 1, and the second clamping member 41 is engaged with the second end of the test piece 1.
[0126] The fixing component 3 includes a first sliding member 32 and a first fixing member 33. The bottom of the first sliding member 32 is fixedly connected to the top of the first fixing member 33. The first fixing member 33 is rotatably connected to the end of the first clamping member 31 away from the moving component 4. The first sliding member 32 is provided with a through hole. The first end of the guide member 2 passes through the through hole to the side beyond the first sliding member 32. The first end of the guide member 2 is slidably connected to the first sliding member 32. The first sliding member 32 is provided with a locking part, which restricts the relative movement between the guide member 2 and the test piece 1. In this embodiment, the first sliding member 32 is a box-type linear bearing slider. The box-type linear bearing slider is provided with a set screw in the through hole. The set screw can abut against the outer side of the guide member 2.
[0127] The fixing component 3 includes a first rotating member 34 and a first fixing member 33 with a mounting hole. The first rotating member 34 includes a rotating part 341 and a fixing part 342. The rotating part 341 is rotatably connected to the fixing part 342 and can rotate relative to the fixing part. The outer side of the fixing part 342 is fixedly connected to the mounting hole. The rotating part 341 has a through hole that mates with the first clamping member 31. One end of the first clamping member 31 is detachably fixedly connected to the through hole, and the fixed connection position between the first clamping member 31 and the through hole is adjustable. Specifically, the first rotating member 34 has a threaded hole with internal threads, and the first clamping member 31 has an external thread that matches the internal thread. The first rotating member 34 and the first clamping member 31 are threadedly connected. The first clamping member 31 can be screwed in or out relative to the first rotating member 34 to adjust the relative position of the test piece 1 and the first rotating member 34. Specifically, the through hole of the rotating part 341 has a threaded hole with internal threads, and the end of the first clamping member 31 has an external thread that matches the internal thread. For example, the first rotating component 34 is a rolling bearing.
[0128] The outer diameter measuring device also includes a support platform located below the motion component 3. The side of the support platform near the guide 2 is slidably connected to the fixing component 3. Specifically, the support platform is slidably connected to the first fixing component 33, and the first fixing component 33 can move relative to the support platform.
[0129] The outer diameter measuring device includes a limiting member 6, which includes a first mounting portion 601 and a second mounting portion 602 located above the first mounting portion 601. The first mounting portion 601 has a first mounting position 61 along the axial direction of the part to be measured 1, through which the part to be measured 1 passes and is slidably connected to the limiting member 6. The second mounting portion 602 has a second mounting position 62 along the axial direction of the part to be measured 1, through which a guide member 2 passes and is movably connected to the limiting member 6. Specifically, the second mounting position 62 has a sliding portion 621 inside, through which the guide member 2 passes and is slidably connected to the limiting member 6. For example, the sliding portion 621 is a linear bearing.
[0130] The limiting component 6 includes a first connecting portion 603 and a second connecting portion 604. The first connecting portion 603 has a first groove 605, and the second connecting portion 604 has a second groove 606. The outer diameter measuring device also includes a first fastener and a second fastener. The bottom of the detection chamber of the diameter gauge 5 has a first mounting hole that mates with the first groove 605 and a second mounting hole that mates with the second groove 606. The first fastener passes through the first groove and the first mounting hole 605 and is fixedly connected to the diameter gauge 5. The second fastener passes through the second groove 606 and the second mounting hole and is fixedly connected to the diameter gauge 5. Specifically, the first fastener and the second fastener can be bolts, screws, studs, or other mechanical components used for connection and fixation. Specifically, both the first groove 605 and the second groove 606 are U-shaped grooves.
[0131] The diameter gauge 5 is a laser diameter gauge.
[0132] The outer diameter measuring device includes a first controller, which is electrically connected to a diameter measuring instrument 5. The first controller is used to send a first test signal to the diameter measuring instrument 5, and the diameter measuring instrument 5 is used to receive the first test signal and adjust to the corresponding acquisition frequency according to the first test signal.
[0133] The diameter measuring instrument 5 includes a detection chamber 51 and a diameter measuring component that acts on the detection chamber 51. The detection chamber 51 includes a detection area 511 and a non-detection area 512. The detection area 511 accommodates part of the part to be measured 1, and the non-detection area 512 accommodates a limiting component 6.
[0134] The outer diameter measuring device includes a moving platform 9, and the motion component 4 includes a third sliding member 43 and a second fixing member 44. The second fixing member 44 is detachably fixed to the second end of the part to be measured 1 and detachably fixed to the second end of the guide member 2.
[0135] The third sliding member 43 is fixedly connected to the second fixed member 44, and the moving platform 9 is slidably connected to the third sliding member 43. The third sliding member 43 drives the second fixed member 44 to move relative to the moving platform 9, and drives the test piece 1 and the guide member 2 to reciprocate along the axial direction of the test piece 1 relative to the detection cavity 51. Specifically, the moving platform 9 is provided with a slide rail, and the third sliding member 43 is provided with a slide groove that matches the slide rail. The third sliding member 43 is slidably connected to the moving platform 9. Specifically, the second fixed member 44 is provided with a fourth mounting hole in the radial direction along the test piece 1. The outer diameter measuring device includes a third fastener. The second end of the guide member 2 is provided with a connecting cavity with an internal thread. The third fastener is provided with an external thread that matches the internal thread. The third fastener passes through the fourth mounting hole and is threadedly connected to the second end of the guide member 2.
[0136] The motion assembly 4 includes a first drive assembly 42, which is disposed on the side of the second fixing member 43 away from the guide member 2. The second fixing member 44 has a third mounting hole in the radial direction along the test piece 1. The first drive assembly 42 is fixedly connected to the second fixing member 44. One end of the second clamping member 41 passes through the third mounting hole and is rotatably connected to the first drive assembly 42. Specifically, the first drive assembly 42 includes a second rotating member and a first drive member, which are fixedly connected to the second rotating member. Specifically, the first drive member is a servo motor, and the second rotating member can be a coupling.
[0137] The outer diameter measuring device includes a second controller, a first controller electrically connected to the second controller, and a second controller electrically connected to a third slider 42. The first controller is used to send a third test signal to the second controller, and the second controller is used to receive the third test signal and control the sliding speed and sliding distance of the third slider 42 relative to the moving platform 9 according to the third test signal.
[0138] The working process of the outer diameter measuring device in this embodiment is as follows: Before the test begins, the first sliding member 32 is slid along the guide member 2 and drives the first end of the test member 1 to move until the test member 1 is in a straightened state. At this time, the test member 1 is located in the first fixed position. The first sliding member 32 is locked in the first fixed position by the locking part. The relative position of the first clamping member 31 and the first fixing member 33 is adjusted to further straighten the test member 1. At this time, the rotation angle of the test member 1 is set to 0°, and the test preparation is completed.
[0139] The test begins with the first controller sending a first test signal to the diameter gauge 5. The diameter gauge 5 adjusts to the corresponding acquisition frequency and begins to detect the outer diameter of the test piece 1 located in the detection cavity. The first controller sends a third test signal to the second controller, and the third sliding member 42 drives the test piece 1 and the guide member 2 to reciprocate along the axial direction of the test piece 1 relative to the detection cavity until one cycle is completed. Then, the first controller sends a second test signal to the first drive member, which drives the test piece 1 to rotate to the first rotation angle. The above test process is repeated until one cycle is completed. Then, the first controller sends a fourth test signal to the first drive member, which drives the test piece 1 to rotate to the second rotation angle. The above test process is repeated until one cycle is completed. This cycle is repeated until the test ends.
[0140] Figure 6 The figures show three sets of outer diameter measurement curves of the test piece obtained by rotating it to 0°, 120° and 240° respectively. The horizontal axis represents the acquisition frequency of the diameter measuring instrument and the vertical axis represents the outer diameter of the test piece. As can be seen from the figures, the three sets of outer diameter measurement curves have good consistency, proving that the test piece is not elliptic.
[0141] Example 2
[0142] This embodiment provides an outer diameter measuring device. The similarities with the outer diameter measuring device in embodiment one will not be repeated here. The difference between this embodiment two and embodiment one is that the outer diameter measuring device does not include a support platform, and the outer diameter measuring device includes a shock absorber 7 and a second sliding member 8.
[0143] The shock absorber 7 is fixedly connected to the second sliding member 8. The second sliding member 8 has a third mounting position, through which the guide member 2 passes and is slidably connected to the second sliding member 8. Specifically, the second sliding member 8 is a linear bearing slider.
[0144] The working process of the outer diameter measuring device in this embodiment is as follows: Before the test begins, the first sliding member 32 is slid along the guide member 2 and drives the first end of the test member 1 to move until the test member 1 is in a straightened state. At this time, the test member 1 is located in the first fixed position. The first sliding member 32 is locked in the first fixed position by the locking part. The relative position of the first clamping member 31 and the first fixing member 33 is adjusted to further straighten the test member 1. At this time, the rotation angle of the test member 1 is 0°, and the test preparation is completed.
[0145] The test begins with the first controller sending a first test signal to the diameter gauge 5. The diameter gauge 5 adjusts to the corresponding acquisition frequency and begins to detect the outer diameter of the test piece 1 located in the detection cavity. The first controller sends a third test signal to the second controller, and the third sliding member 42 drives the test piece 1 and the guide member 2 to reciprocate along the axial direction of the test piece 1 relative to the detection cavity until one cycle is completed. Then, the first controller sends a second test signal to the first drive member, which drives the test piece 1 to rotate to the first rotation angle. The above test process is repeated until one cycle is completed. Then, the first controller sends a fourth test signal to the first drive member, which drives the test piece 1 to rotate to the second rotation angle. The above test process is repeated until one cycle is completed. This cycle is repeated until the test ends.
[0146] Although the present invention has been described through preferred embodiments, the present invention is not limited to the embodiments described herein, and includes various changes and variations without departing from the scope of the present invention.
[0147] In this document, the directional terms such as "front," "rear," "upper," and "lower" are defined according to the positions of the components in the accompanying drawings and the positions between the components, and are only used for clarity and convenience in expressing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed by this utility model.
[0148] Where there is no conflict, the above embodiments and features described herein can be combined with each other.
[0149] The above-disclosed embodiment is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.
Claims
1. An outer diameter measuring device, applied to a tubular part to be measured (1), characterized in that, include: Guide (2), the axis of the guide (2) is parallel to the axis of the test piece (1) in the same vertical plane; The fixing component (3) is detachably fixed to the first end of the test piece (1) and movably connected to the guide (2). The fixing component (3) drives the first end of the test piece (1) to move relative to the guide (2) along the axial direction of the guide (2). The motion component (4) is detachably fixed to the second end of the test piece (1) and detachably fixed to the second end of the guide (2); The diameter measuring instrument (5) includes a detection cavity (51) and a diameter measuring component acting on the detection cavity (51). The detection cavity (51) houses part of the workpiece to be measured (1). The motion component (4) drives the workpiece to be measured (1) to rotate around the axis of the workpiece to be measured (1). The workpiece to be measured (1) rotates relative to the diameter measuring component of the diameter measuring instrument (5) and drives the workpiece to be measured (1) to reciprocate along the axis of the workpiece to be measured (1) relative to the detection cavity (51).
2. The outer diameter measuring device according to claim 1, characterized in that, The fixing component (3) includes a first clamping member (31), and the moving component (4) includes a second clamping member (41). The first clamping member (31), the second clamping member (41), and the test piece (1) are located on the same axis. The first clamping member (31) is detachably fixed to the first end of the test piece (1); The second clamping member (41) is detachably fixed to the second end of the test piece (1).
3. The outer diameter measuring device according to claim 2, characterized in that, The first clamping member (31) is engaged with the first end of the test piece (1), and the second clamping member (41) is engaged with the second end of the test piece (1).
4. The outer diameter measuring device according to claim 2, characterized in that, The fixing component (3) includes a first sliding member (32) and a first fixing member (33); The first sliding member (32) is fixedly connected to the first fixing member (33), and the first fixing member (33) is rotatably connected to the first clamping member (31); The first end of the guide (2) is movably connected to the first sliding member (32), and the first sliding member (32) moves along the guide (2) to drive the first end of the test piece (1) to move axially relative to the guide (2).
5. The outer diameter measuring device according to claim 4, characterized in that, The fixing component (3) includes a first rotating member (34), the first fixing member (33) is provided with a mounting hole, the first rotating member (34) is fixedly connected to the mounting hole, and the first fixing member (33) and the first clamping member (31) are rotatably connected through the first rotating member (34); The first rotating member (34) is provided with a through hole that cooperates with the first clamping member (31). One end of the first clamping member (31) is detachably fixedly connected to the through hole, and the fixed connection position between the first clamping member (31) and the through hole is adjustable.
6. The outer diameter measuring device according to claim 5, characterized in that, The first rotating member (34) has a threaded hole with an internal thread, and the first clamping member (31) has an external thread that matches the internal thread. The first rotating member (34) is threadedly connected to the first clamping member (31). The first clamping member (31) is screwed in or out relative to the first rotating member (34) to adjust the relative position of the test piece (1) and the first rotating member (34).
7. The outer diameter measuring device according to claim 4, characterized in that, The first sliding member (32) is provided with a locking part, which restricts the relative movement between the guide member (2) and the test member (1).
8. The outer diameter measuring device according to claim 2, characterized in that, The motion component (4) includes a first drive component (42); The first driving component (42) is rotatably connected to the end of the second clamping member (41) away from the test piece (1); Under the action of the first driving component (42), the second clamping component (41) drives the second end of the test piece (1) to rotate around the axis of the test piece (1) in coordination with the test piece (1).
9. The outer diameter measuring device according to any one of claims 1-8, characterized in that, The device further includes a limiting member (6), which has a first mounting position (61) and a second mounting position (62) in the radial direction along the test piece (1); The test piece (1) passes through the first mounting position (61) and is movably connected to the limiting member (6), and the first mounting position (61) restricts the shaking of the test piece (1); The guide (2) passes through the second mounting position (62) and is movably connected to the limiting member (6), the second mounting position (62) restricting the swaying of the guide (2).
10. The outer diameter measuring device according to claim 9, characterized in that, The detection cavity (51) includes a detection area (511) and a non-detection area (512); The detection area (511) accommodates part of the test piece (1), and the non-detection area (512) at least partially accommodates the limiting piece (6).
11. The outer diameter measuring device according to any one of claims 1-8, characterized in that, The device includes a shock absorber (7) and a second sliding member (8); The shock absorber (7) is fixedly connected to the second sliding member (8), and the second sliding member (8) has a third mounting position. The guide member (2) passes through the third mounting position and is slidably connected to the second sliding member (8).
12. The outer diameter measuring device according to any one of claims 1-8, characterized in that, The device includes a mobile platform (9), and the motion component (4) includes a third slider (43) and a second fixing component (44); The second fixing member (44) is detachably fixed to the second end of the test piece (1) and detachably fixed to the second end of the guide member (2); The third sliding member (43) is fixedly connected to the second fixing member (44), and the moving platform (9) is slidably connected to the third sliding member (43). The third sliding member (43) drives the second fixing member (44) to move relative to the moving platform (9), and drives the test piece (1) and the guide member (2) to move back and forth along the axial direction of the test piece (1) relative to the detection cavity (51).