Tooling capable of quickly improving parallelism of helmet assembly position and helmet processing device
Patent Information
- Application Number
- CN202522301783.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-30
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-30
AI Technical Summary
若头盔装配位置的开口尺寸超差或平行度较差，就会影响电子设备的装配，且为使用过程中电子设备的精确度埋下了隐患
当头盔装配位置平行精度达不到要求时，采用该工装：安装限位杆后利用两侧研磨头上的砂纸分别对两个装配面进行打磨。打磨过程中，两侧的研磨头分别绕活动杆和限位杆旋转，同时向内推动活动杆，使活动杆上的研磨头逐渐向内移动，由于两侧研磨头相互平行，因此最终两个装配面也必然相互平行，打磨后的装配面必然满足平行精度要求。并且由于两侧研磨头的间距在产品要求的尺寸范围内、活动杆的行程在公差范围内，因此最终尺寸保持在规定尺寸的上下差内，不会过度打磨，进而无需反复进行修正和三坐标测量；若活动杆和限位杆将弹簧压缩到两杆接触时还未打磨到平行面，可直接判定零件开口尺寸偏小，减少三坐标检测步骤，该工装能快速提升头盔装配位置平行度并保证尺寸要求。其中，调节块既能保证活动杆和限位杆的同轴心安装，还能为活动杆提供活动空间、为弹簧提供安装空间，活动杆和限位杆既能为研磨头提供支撑，还能保证两侧研磨头相互平行，弹簧既能调节活动杆的行程，还能控制打磨平缓进行。该工装结构简单，易于操作和携带。
Smart Images
Figure CN224780220U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to machining tooling, specifically to a tooling and helmet processing device that can quickly improve the parallelism of the helmet assembly position. Background Technology
[0002] Some helmets require extremely high assembly precision. For example, integrated display helmets that combine communication and information equipment require all components to be highly compatible, necessitating high-precision manufacturing and assembly. If the opening dimensions at the helmet's assembly points are out of tolerance or the parallelism is poor, it will affect the assembly of electronic equipment and create potential problems with the accuracy of the electronic equipment during use.
[0003] Currently, when the parallelism accuracy of the helmet assembly position does not meet the requirements, the entire helmet needs to be positioned and repeatedly corrected and measured, which is not only cumbersome but also consumes a lot of time. Utility Model Content
[0004] The purpose of this utility model is to provide a tooling that can quickly improve the parallelism of the helmet assembly position, and a helmet processing device including the above-mentioned tooling. The tooling can quickly improve the parallelism of the helmet assembly position while ensuring dimensional requirements, and is easy to operate and carry.
[0005] The technical solution adopted in this utility model is: A tooling for quickly improving the parallelism of helmet assembly positions includes an adjusting block, a movable rod, a limiting rod, and grinding heads. The adjusting block has an internal movable cavity and coaxial movable rod slots and limiting rod slots at both ends. One end of the movable rod passes through the movable rod slot and extends into the movable cavity without exiting. A spring is installed in the movable cavity. When the movable rod is pushed inward, it overcomes the spring force until the movable rod reaches the end of its stroke. When the movable rod is released, the spring returns to its original position and pushes the movable rod outward. One end of the limiting rod can be inserted into the limiting rod slot and is limited. The grinding heads are rotatably fitted onto the other ends of the movable rod and the limiting rod. Sandpaper is installed on the side of the grinding head facing the adjusting block. After the limiting rod is installed, the grinding heads on both sides are parallel to each other and the spacing is within the product requirement size range. The stroke of the movable rod is within the tolerance range.
[0006] Preferably, the adjusting block is composed of adjusting block A and adjusting block B. The ends of adjusting block A and adjusting block B that are far apart from each other are respectively provided with a movable rod slot and a limiting rod slot. The ends of adjusting block A and adjusting block B that are close to each other are threaded together and enclose each other to form a movable cavity.
[0007] Preferably, a planar thrust bearing is provided inside the movable cavity. After the limit rod is installed, the limit rod abuts against one side of the planar thrust bearing, and when the movable rod reaches the end of its stroke, it abuts against the other side of the planar thrust bearing.
[0008] Preferably, the grinding head has a planar thrust bearing inside, a light hole at one end near the adjusting block, and a threaded hole at the other end away from the adjusting block with a screw. The movable rod or the limiting rod passes through the light hole and abuts against one side of the planar thrust bearing, while the screw abuts against the other side of the planar thrust bearing.
[0009] Preferably, the grinding head has a three-stage stepped structure that gradually narrows from near the adjusting block to far away from the adjusting block along the axial direction, with the smooth hole in the first and second stages and the threaded hole in the third stage.
[0010] Preferably, the sandpaper is attached to the grinding head.
[0011] Preferably, the movable rod has a slot in the movable cavity, an elastic retaining ring is installed in the slot, and a spring is sleeved on the movable rod and acts on the elastic retaining ring.
[0012] Preferably, the limiting rod is longer than the movable rod.
[0013] Preferably, the limiting rod and the movable rod are made of solid cylinders.
[0014] A helmet processing apparatus includes the aforementioned tooling that can quickly improve the parallelism of the helmet assembly position.
[0015] The beneficial effects of this utility model are: When the parallelism of the helmet assembly position does not meet the requirements, this fixture is used: After installing the limiting rod, sandpaper on the grinding heads on both sides is used to grind the two assembly surfaces. During the grinding process, the grinding heads on both sides rotate around the movable rod and the limiting rod respectively, while pushing the movable rod inward, causing the grinding heads on the movable rod to gradually move inward. Since the grinding heads on both sides are parallel to each other, the two assembly surfaces will inevitably be parallel to each other after grinding, and the assembly surfaces after grinding will definitely meet the parallelism requirements. Furthermore, since the distance between the grinding heads on both sides is within the product's required size range and the travel of the movable rod is within the tolerance range, the final size remains within the upper and lower limits of the specified size, avoiding over-grinding and eliminating the need for repeated corrections and coordinate measuring machines (CMMs). If the movable rod and the limiting rod compress the spring to the point where the two rods contact but the surface is not yet parallel, it can be directly determined that the opening size of the part is too small, reducing the number of CMM inspection steps. This fixture can quickly improve the parallelism of the helmet assembly position and ensure dimensional requirements. The adjusting block ensures the coaxial installation of the movable rod and the limiting rod, provides space for the movable rod to move, and provides installation space for the spring. The movable rod and the limiting rod support the grinding head and ensure that the two grinding heads are parallel to each other. The spring adjusts the stroke of the movable rod and controls the grinding process to be smooth. This fixture has a simple structure and is easy to operate and carry. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a three-dimensional view of the tooling in this utility model that can quickly improve the parallelism of the helmet assembly position.
[0018] Figure 2 This is a cross-sectional view of the tooling in this utility model that can quickly improve the parallelism of the helmet assembly position.
[0019] Figure 3 This is a perspective view of the grinding head in this utility model.
[0020] Figure 4 This is a perspective view of the movable rod in this utility model.
[0021] In the diagram: 1-Screw; 2-Grinding head; 3-Sandpaper; 4-Moving rod; 5-Adjusting block A; 6-Adjusting block B; 7-Limiting rod; 8-Planar thrust bearing; 9-Elastic retaining ring; 10-Spring; 11-Slot. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0025] The features and performance of this application will be further described in detail below with reference to the embodiments.
[0026] Example 1 This embodiment discloses a tooling that can quickly improve the parallelism of the helmet assembly position, such as... Figure 1 and Figure 2 As shown, the device includes an adjusting block, a movable rod 4, a limiting rod 7, and a grinding head 2. The adjusting block has an internal movable cavity with coaxial movable rod slots and limiting rod slots at both ends. One end of the movable rod 4 passes through the movable rod slot and extends into the movable cavity without exiting. A spring 10 is installed in the movable cavity. When the movable rod 4 is pushed inward, it overcomes the spring force until the movable rod 4 reaches the end of its stroke. When the movable rod 4 is released, the spring 10 resets and pushes the movable rod 4 outward. One end of the limiting rod 7 can be inserted into the limiting rod slot and is limited. The grinding head 2 is rotatably fitted onto the other end of the movable rod 4 and the limiting rod 7. Sandpaper 3 is provided on the side of the grinding head 2 facing the adjusting block. After the limiting rod 7 is installed, the grinding heads 2 on both sides are parallel to each other and the distance between them is within the size range required by the product. The stroke of the movable rod 7 is within the tolerance range.
[0027] When the parallelism of the helmet assembly position does not meet the requirements, this fixture is used: After installing the limiting rod, sandpaper on the grinding heads on both sides is used to grind the two assembly surfaces. During the grinding process, the grinding heads on both sides rotate around the movable rod and the limiting rod respectively, while pushing the movable rod inward, causing the grinding heads on the movable rod to gradually move inward. Since the grinding heads on both sides are parallel to each other, the two assembly surfaces will inevitably be parallel to each other after grinding, and the assembly surfaces after grinding will definitely meet the parallelism requirements. Furthermore, since the distance between the grinding heads on both sides is within the product's required size range and the travel of the movable rod is within the tolerance range, the final size remains within the upper and lower limits of the specified size, avoiding over-grinding and eliminating the need for repeated corrections and coordinate measuring machines (CMMs). If the movable rod and the limiting rod compress the spring to the point where the two rods contact but the surface is not yet parallel, it can be directly determined that the opening size of the part is too small, reducing the number of CMM inspection steps. This fixture can quickly improve the parallelism of the helmet assembly position and ensure dimensional requirements.
[0028] The adjusting block ensures the coaxial installation of the movable rod 4 and the limiting rod 7, provides space for the movable rod 4 to move and space for the spring 10 to install. The movable rod 4 and the limiting rod 7 provide support for the grinding head 2 and ensure that the two grinding heads 2 are parallel to each other. The spring 10 can adjust the stroke of the movable rod 4 and control the grinding to proceed smoothly.
[0029] The tooling has a simple structure and is easy to operate and carry.
[0030] like Figure 1 and Figure 2As shown, in this embodiment, preferably, the adjusting block is composed of adjusting block A5 and adjusting block B6. The ends of adjusting block A5 and adjusting block B6 that are far apart from each other are respectively provided with a movable rod slot and a limiting rod slot. The ends of adjusting block A5 and adjusting block B6 that are close to each other are threaded together and enclose each other to form a movable cavity. This arrangement makes it convenient to manufacture and assemble the adjusting block, and facilitates the installation of the movable rod 4 and the spring 10 with the adjusting block.
[0031] like Figure 2 As shown, in this embodiment, preferably, a planar thrust bearing 8 is provided in the movable cavity. After the limiting rod 7 is installed, the limiting rod 7 abuts against one side of the planar thrust bearing 8. When the movable rod 4 reaches the end of its stroke, it abuts against the other side of the planar thrust bearing 8. The planar thrust bearing 8 here can reduce wear on the contact surface, improve service life, and maintain the accuracy of the tooling.
[0032] like Figure 2 As shown, in this embodiment, preferably: the grinding head 2 is provided with a planar thrust bearing 8 inside, a light hole is provided at one end near the adjusting block, and a threaded hole is provided at the other end away from the adjusting block and a screw 1 is fitted therein. The movable rod 4 or the limiting rod 7 passes through the light hole and abuts against one side of the planar thrust bearing 8, and the screw 1 abuts against the other side of the planar thrust bearing 8. The planar thrust bearing 8 here can reduce the wear of the contact surface, improve the service life, and maintain the accuracy of the tooling. The screw 1 should not be tightened too much, otherwise the planar thrust bearing 8 will not be able to rotate.
[0033] like Figures 1 to 3 As shown, in this embodiment, preferably, the grinding head 2 has a three-stage stepped structure that gradually narrows from near the adjusting block to far away from the adjusting block along the axial direction, with the optical hole in the first and second stages and the threaded hole in the third stage.
[0034] In this embodiment, preferably, the sandpaper 3 is pasted on the grinding head 2, and the sandpaper 3 can be replaced as needed.
[0035] like Figure 2 and Figure 4 As shown, in this embodiment, preferably, the movable rod 4 has a slot 11 in the movable cavity, an elastic retaining ring 9 is installed in the slot 11, and the spring 10 is sleeved on the movable rod 4 and acts on the elastic retaining ring 9.
[0036] like Figure 1 and Figure 2 As shown, in this embodiment, preferably, the limiting rod 7 is longer than the movable rod 4, and two length specifications are adopted so that it can be easily removed from inside the helmet when grinding the inside of the helmet.
[0037] In this embodiment, preferably, the limiting rod 7 and the movable rod 4 are solid cylinders with a diameter of about 6mm.
[0038] Example 2 This embodiment discloses a helmet processing device, which includes the tooling described in Embodiment 1 above that can quickly improve the parallelism of the helmet assembly position.
[0039] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
Claims
1. A tooling that can quickly improve the parallelism of the helmet assembly position, characterized in that: The device includes an adjusting block, a movable rod, a limiting rod, and grinding heads. The adjusting block has an internal movable cavity with coaxial movable rod slots and limiting rod slots at both ends. One end of the movable rod passes through the movable rod slot and extends into the movable cavity without exiting. A spring is installed in the movable cavity. When the movable rod is pushed inward, it overcomes the spring force until the movable rod reaches the end of its stroke. When the movable rod is released, the spring returns to its original position and pushes the movable rod outward. One end of the limiting rod can be inserted into the limiting rod slot and is limited in position. The grinding heads are rotatably fitted onto the other ends of the movable rod and the limiting rod. Sandpaper is installed on the side of the grinding head facing the adjusting block. After the limiting rod is installed, the grinding heads on both sides are parallel to each other and the spacing is within the product's required size range. The stroke of the movable rod is within the tolerance range.
2. The tooling as described in claim 1, which can quickly improve the parallelism of the helmet assembly position, is characterized in that: The adjusting block is composed of adjusting block A and adjusting block B. The ends of adjusting block A and adjusting block B that are far apart from each other are respectively provided with a movable rod slot and a limit rod slot. The ends of adjusting block A and adjusting block B that are close to each other are threaded together and enclose each other to form a movable cavity.
3. The tooling as described in claim 1, which can quickly improve the parallelism of the helmet assembly position, is characterized in that: The movable cavity is equipped with a planar thrust bearing. After the limit rod is installed, the limit rod abuts against one side of the planar thrust bearing, and when the movable rod reaches the end of its stroke, it abuts against the other side of the planar thrust bearing.
4. The tooling as described in claim 1, which can quickly improve the parallelism of the helmet assembly position, is characterized in that: The grinding head has a planar thrust bearing inside, a light hole at one end near the adjusting block, and a threaded hole at the other end away from the adjusting block with a screw. The movable rod or limit rod passes through the light hole and abuts against one side of the planar thrust bearing, while the screw abuts against the other side of the planar thrust bearing.
5. The tooling as described in claim 4, which can quickly improve the parallelism of the helmet assembly position, is characterized in that: The grinding head has a three-stage stepped structure that gradually narrows from near the adjusting block to far away from the adjusting block along the axial direction. The smooth hole is in the first and second stages, and the threaded hole is in the third stage.
6. The tooling as described in claim 1, which can quickly improve the parallelism of the helmet assembly position, is characterized in that: Sandpaper is attached to the grinding head.
7. The tooling as described in claim 1, which can quickly improve the parallelism of the helmet assembly position, is characterized in that: The movable rod has a slot inside the movable cavity, and an elastic retaining ring is installed in the slot. The spring is sleeved on the movable rod and acts on the elastic retaining ring.
8. The tooling as described in claim 1, which can quickly improve the parallelism of the helmet assembly position, is characterized in that: The limit rod is longer than the movable rod.
9. The tooling as described in claim 1, which can quickly improve the parallelism of the helmet assembly position, is characterized in that: The limit rod and the movable rod are made of solid cylinders.
10. A helmet processing apparatus, characterized in that: The tooling includes the tooling described in any one of claims 1 to 9, which can quickly improve the parallelism of the helmet assembly position.