Pre-tightening force detection mechanism
By combining a pressure bar and a ball with magnetic connection and a support block limiting structure, the problem of uneven force distribution in preload detection is solved, achieving higher accuracy and efficiency in detection and reducing product damage.
Patent Information
- Application Number
- CN202423128173.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-17
AI Technical Summary
In existing preload testing, uneven force on the product's inlay area can cause damage during testing, resulting in low positioning accuracy.
The pressure bar and ball are connected by magnetic attraction. The ball automatically aligns itself according to the contour of the second component to ensure uniform force application. Combined with the limiting structure of the support block, it ensures stable positioning of the first component.
It reduces the probability of product damage during preload testing, improves the positioning accuracy and efficiency of testing, reduces local wear, and protects the product surface.
Smart Images
Figure CN223637002U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to detection equipment technical field, especially relate to a pre -tightening force detection mechanism. BACKGROUND
[0002] Pre -tightening force is the part connection in before being subjected to working load, in order to enhance the reliability and compactness of connection, to prevent the gap or relative slippage between the connecting piece after being subjected to load and the force that is added in advance.
[0003] Product inlay pre -tightening force detection usually adopts the mode of direct ball head rod fixed positioning to carry out detection. Although simple and easy to operate, the positioning accuracy of this detection mode is not high, and it is easy to make the product inlay part stress uneven, resulting in the product being damaged in the detection process. In view of this, a detection mechanism that can bear uniform stress is designed to facilitate accurate positioning of the product. UTILITY MODEL CONTENT
[0004] The main purpose of the utility model is to provide a pre -tightening force detection mechanism, which aims at reducing the probability of product pre -tightening force detection damage.
[0005] To achieve the above object, the pre -tightening force detection mechanism provided by the utility model is used to test the pre -tightening force between the first part and the second part of the product, and the pre -tightening force detection mechanism comprises:
[0006] A rack;
[0007] A support block, which is arranged on the rack and is used to support the first part; and
[0008] A detection assembly, which comprises a driving member, a pressure rod and a ball, the driving member is arranged on the rack, the pressure rod is drivingly connected to the output end of the driving member, the ball is magnetically connected to one end of the pressure rod away from the driving member, the driving member drives the pressure rod to abut against the ball to extrude the second part, so that the second part is disconnected from the first part.
[0009] In an embodiment, one side of the pressure rod facing the ball is formed with a rolling plane.
[0010] In an embodiment, the shape of the pressure rod is cylindrical.
[0011] In an embodiment, the diameter of the pressure rod is L1, and the diameter of the ball is L2, L1≥L2.
[0012] In an embodiment, the support block is formed with a detection hole for accommodating the first part.
[0013] In an embodiment, the detection hole has a limiting section and a detection section, the detection section is communicated with one end of the limiting section away from the driving member; the inner diameter of the detection section is smaller than the inner diameter of the limiting section; the groove wall of the limiting section is used for abutting with the convex structure of the first component to limit the first component, and the detection section is used for accommodating the first component.
[0014] In an embodiment, the detection hole further has an accommodating section, the accommodating section is communicated with one end of the detection section away from the limiting section; the inner diameter of the accommodating section is larger than the inner diameter of the detection section.
[0015] In an embodiment, the groove of the detection hole is formed with a chamfer around the edge.
[0016] In an embodiment, the pressure rod is a magnetic pressure rod, and the rolling ball is a steel ball.
[0017] In an embodiment, the driving member is a press machine.
[0018] In the technical scheme of the utility model, the pre-tightening force detection mechanism includes a rack, a supporting block and a detection assembly, the supporting block is arranged on the rack and is used for supporting the first component; the detection assembly includes a driving member, a pressure rod and a rolling ball, the driving member is arranged on the rack, the pressure rod is drivingly connected to the output end of the driving member; the rolling ball is magnetically connected to one end of the pressure rod away from the driving member; the driving member drives the pressure rod to abut against the rolling ball to extrude the second component, so that the second component is disconnected from the first component. In the technical scheme of the utility model, the magnetic connection between the pressure rod and the rolling ball can ensure that the rolling ball abuts against the pressure rod during extrusion, the spherical structure of the rolling ball can automatically move and align with the contour change of the second component during the extrusion of the second component, so that the rolling ball extrudes the second component uniformly, thereby avoiding damage of the second component due to uneven force and reducing the probability of product damage during pre-tightening force detection. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.
[0020] Figure 1 The structure schematic view of one embodiment of the pre-tightening force detection mechanism provided by the utility model;
[0021] Figure 2 The structure schematic view of one embodiment of the pre-tightening force detection mechanism provided by the utility model; Figure 1 The sectional view along A-A;
[0022] Figure 3 For Figure 2 Local enlarged view at B;
[0023] Figure 4 For the structure diagram of the supporting block in the pre-tightening force detection mechanism.
[0024] BRIEF DESCRIPTION OF DRAWINGS
[0025] Reference Name Reference Name 1000 Pre-tightening force detection mechanism 31 Driving member 1 Frame 32 Pressure bar 2 Support block 32a Rolling plane 2a Detection hole 33 Rolling ball 2a1 Limiting section a First component 2a2 Detection section b Second component 2a3 Containing section
[0026] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0028] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.
[0029] In addition, if the present application embodiments involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.
[0030] The present application provides a pre-tightening force detection mechanism 1000.
[0031] Please refer to Figure 1 , Figure 2 and Figure 3In the embodiment of the utility model, the pre-tightening force detection mechanism 1000 comprises a rack 1, a support block 2 and a detection assembly 3, the support block 2 is arranged on the rack 1 and is used for supporting the first component a; the detection assembly 3 comprises a driving member 31, a pressure bar 32 and a rolling ball 33, the driving member 31 is arranged on the rack 1, the pressure bar 32 is drivingly connected to the output end of the driving member 31; the rolling ball 33 is magnetically connected to the end of the pressure bar 32 away from the driving member 31; the driving member 31 drives the pressure bar 32 to abut against the rolling ball 33 to extrude the second component b, so that the second component b is disconnected from the first component a.
[0032] In the technical scheme of the utility model, the magnetic attraction connection between the pressure bar 32 and the rolling ball 33 can ensure that the rolling ball 33 keeps abutting against the pressure bar 32 during the extrusion process, and the spherical structure of the rolling ball 33 can automatically move and align during the extrusion of the second component b, so that the rolling ball 33 extrudes the second component b uniformly, thereby avoiding damage of the second component b due to uneven force and reducing the probability of damage of the product during the pre-tightening force detection.
[0033] Please refer to Figure 3 In the embodiment of the utility model, a rolling plane 32a is formed on the side of the pressure bar 32 facing the rolling ball 33. The rolling plane 32a formed on the pressure bar 32 makes the contact with the rolling ball 33 smoother, which helps the rolling ball 33 roll more freely on the side of the pressure bar 32 facing the rolling ball 33, avoids the rolling ball 33 from being unable to align in time due to the influence of uneven contact surface, and thus improves the aligning speed of the detection mechanism.
[0034] It can be understood that the shape of the pressure bar 32 can be a cuboid, a cylinder or other shapes. Please refer to Figure 3 In the embodiment of the utility model, the shape of the pressure bar 32 is a cylinder. The cylindrical pressure bar 32 is a standard geometric shape, and its manufacturing process is relatively simple, which can be mass-produced by machining or casting, thereby reducing the manufacturing cost. At the same time, the cylindrical pressure bar 32 makes the rolling plane 32a circular, that is, the distance from the center point of the rolling plane 32a to each edge position is the same, which means that the rolling ball 33 can roll the same distance in each direction from the center of the rolling plane 32a, thereby maximizing the use of the space in the first component a. Therefore, the shape of the pressure bar 32 is preferably a cylinder.
[0035] Please refer to Figure 3 In the embodiment of the utility model, the diameter of the pressure bar 32 is L1, the diameter of the rolling ball 33 is L2, and L1≥L2. The diameter of the pressure bar 32 is greater than or equal to the diameter of the rolling ball 33, which can ensure that the pressure bar 32 has enough area to contact the rolling ball 33 when contacting, thereby providing stable support and avoiding the rolling ball 33 from slipping off the rolling plane 32a when extruding the rolling ball 33.
[0036] Referring to Figure 2 and Figure 3 In an embodiment of the present application, the support block 2 is formed with a detection hole 2a for accommodating the first component a. The first component a is limited by the hole wall of the detection hole 2a, ensuring that the first component a is always in the detected position during the pre-tightening force detection, and the periphery of the detection hole 2a provides stable support for the first component a, thereby reducing errors caused by movement or vibration of the first component a during detection.
[0037] Referring to Figure 4 In an embodiment of the present application, the detection hole 2a has a limiting section 2a1 and a detection section 2a2, the detection section 2a2 is connected to one end of the limiting section 2a1 away from the driving member 31; the inner diameter of the detection section 2a2 is smaller than that of the limiting section 2a1; the groove wall of the limiting section 2a1 is used to abut against the protruding structure of the first component a to limit the first component a, and the detection section 2a2 is used to accommodate the first component a. By setting the limiting section 2a1 and the detection section 2a2, the position of the first component a can be more accurately limited, ensuring its stability during detection; the groove wall of the limiting section 2a1 abuts against the protruding structure of the first component a, which design can disperse the stress, reduce local wear and tear, and improve the durability of the support block 2.
[0038] Referring to Figure 4 In an embodiment of the present application, the detection hole 2a also has an accommodation section 2a3, the accommodation section 2a3 is connected to one end of the detection section 2a2 away from the limiting section 2a1; the inner diameter of the accommodation section 2a3 is greater than that of the detection section 2a2. After detection, the second component b in unqualified products will fall off, and the second component b can be placed through the accommodation section 2a3, without the need to repeatedly collect the second component b in unqualified products, thereby improving the detection efficiency.
[0039] Referring to Figure 3 In an embodiment of the present application, the periphery of the slot of the detection hole 2a is formed with a chamfer. The chamfer can reduce the sharp edges of the slot of the detection hole 2a, reducing the risk of injury to the operator when installing or dismounting the first component a; the presence of the chamfer can increase the contact area of the first component a and the hole of the detection hole 2a, thereby reducing the wear and tear of the first component a when contacting the hole of the detection hole 2a, protecting the surface of the first component a and avoiding damage during installation and dismounting.
[0040] The pressure bar 32 is magnetically connected with the ball 33, wherein the pressure bar 32 can be a magnetic piece and the ball 33 can be steel, or the pressure bar 32 can be steel and the ball 33 can be a magnetic piece. In an embodiment of the utility model, the pressure bar 32 is a magnetic pressure bar 32 and the ball 33 is a steel ball. The ball 33 is made of steel because the ball 33 is often in contact with the second part b during detection and moves, and steel has high strength and good wear resistance, which is suitable for the ball 33. Therefore, the pressure bar 32 is preferably a magnetic piece and the ball 33 is preferably a steel ball.
[0041] It can be understood that the driving piece 31 can be a driving cylinder or a press machine. In an embodiment of the utility model, the driving piece 31 is a press machine. The press machine can realize accurate pressure and displacement control, does not need to add a hard stop on a tooling, and can easily realize one machine with multiple uses and flexible assembly line through calling different pressing programs; the press machine can adapt to different process requirements, can be connected with a computer through an external port, can store pressing data in the computer, guarantees the traceability of product processing data, and is convenient for production quality control management; the press machine provides multiple pressing modes, including constant pressing speed, setting accurate position stop, setting accurate pressure stop and the like, and meets different detection requirements. Therefore, the press machine is preferably used as the driving piece 31.
[0042] The above description is only an exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation or direct / indirect application in other related technical fields under the technical concept of the utility model, the contents of the utility model specification and the drawings are included in the patent protection range of the utility model.
Claims
1. A preload detection mechanism (1000) for testing a preload between a first component (a) and a second component (b) of a product, characterized in that, The pre-tightening force detection mechanism (1000) comprises: a rack (1); a support block (2) arranged on the rack (1) and used for supporting the first component (a); and a detection assembly comprising a driving member (31), a pressure rod (32) and a rolling ball (33), the driving member (31) is arranged on the rack (1), the pressure rod (32) is drivingly connected to an output end of the driving member (31), the rolling ball (33) is magnetically connected to an end of the pressure rod (32) away from the driving member (31), the driving member (31) drives the pressure rod (32) to abut against the rolling ball (33) to extrude the second component (b), so that the second component (b) is disconnected from the first component (a).
2. The pre-tightening force detection mechanism (1000) according to claim 1, characterized by, The pressure rod (32) is formed with a rolling plane (32a) on a side facing the rolling ball (33).
3. The pre-tightening force detecting mechanism (1000) according to claim 2, characterized by, The pressure rod (32) is cylindrical in shape.
4. The pre-tightening force detection mechanism (1000) according to claim 3, characterized by The diameter of the pressure rod (32) is L1, and the diameter of the rolling ball (33) is L2, L1≥L2.
5. The pre-tightening force detecting mechanism (1000) according to claim 1, characterized by, The support block (2) is formed with a detection hole (2a) for accommodating the first component (a).
6. The pre-tightening force detection mechanism (1000) according to claim 5, characterized by The detection hole (2a) has a limiting section (2a1) and a detection section (2a2), the detection section (2a2) is connected to an end of the limiting section (2a1) away from the driving member (31), the inner diameter of the detection section (2a2) is smaller than that of the limiting section (2a1), the groove wall of the limiting section (2a1) is used for abutting against the protruding structure of the first component (a) to limit the first component (a), and the detection section (2a2) is used for accommodating the first component (a).
7. The pre-tightening force detection mechanism (1000) according to claim 6, characterized in that The detection hole (2a) also has an accommodating section (2a3) connected to an end of the detection section (2a2) away from the limiting section (2a1), and the inner diameter of the accommodating section (2a3) is greater than that of the detection section (2a2).
8. The pre-tightening force detecting mechanism (1000) according to claim 6, characterized by, The slot opening of the detection hole (2a) is formed with a chamfer.
9. The pre-tightening force detection mechanism (1000) according to any one of claims 1 to 8, characterized in that The pressure rod (32) is a magnetic attraction pressure rod (32), and the rolling ball (33) is a steel ball.
10. The pre-tightening force detection mechanism (1000) according to any one of claims 1 to 8, characterized in that, The driving member (31) is a press machine.