Threaded element curved surface detection tool

Abstract

The utility model discloses a kind of thread element curved surface detection tool, including pedestal, the support shaft for installing thread element to be measured, two support grooves for placing support shaft are equipped on pedestal, guide rail perpendicular to the axis of support shaft is also equipped on pedestal, slidingly connected with moving seat on guide rail, rotatable rotating block is equipped on moving seat, locking assembly for locking rotating block and angle indicating assembly for indicating rotation angle are equipped, rotating block is equipped with curved surface template on the side towards support shaft.The utility model is simple in structure, can satisfy the detection needs of various different helix angle, curved surface profile thread element, reduce the manufacturing cost of tool, and it is easy to operate, and detection personnel can quickly complete clamping, adjusting and detecting whole process, can satisfy the rapid batch detection of production site.

Description

Technical Field

[0001] This utility model belongs to the field of screw processing technology, specifically relating to a tooling for inspecting the curved surface of threaded components. Background Technology

[0002] The extruder screw is a core component of extrusion molding equipment, typically consisting of a splined shaft and threaded elements, with the threaded elements mounted on the splined shaft for assembly. The surface profile and helix angle accuracy of the threaded elements directly affect their performance. Currently, the inspection of such complex curved surface parts usually employs a coordinate measuring machine (CMM), which offers high accuracy but is expensive. Some tooling uses dedicated templates for comparison and inspection, but existing tooling has poor adaptability, typically only suitable for inspecting threaded elements of a specific specification. When product parameters (such as helix angle and thread groove depth) change, the entire tooling needs to be replaced, resulting in high costs and management inconvenience. Therefore, there is an urgent need for a tooling that is simple in structure, low in manufacturing cost, and can flexibly adapt to the surface inspection of threaded elements of various specifications. Utility Model Content

[0003] To address the shortcomings of the prior art, this utility model provides a tooling for inspecting the curved surfaces of threaded components. This tooling has a simple structure, is easy to operate, has low manufacturing cost, and can flexibly adapt to the inspection of curved surfaces of threaded components of various specifications.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A surface inspection fixture for threaded components includes a base and a support shaft for mounting the threaded component to be tested. The support shaft is a spline shaft adapted to the threaded component. The base has two support grooves for placing the support shaft. The base also has a guide rail perpendicular to the axis of the support shaft. A movable seat is slidably connected to the guide rail. The movable seat is located on one side of the support shaft. When it slides along the guide rail toward the support shaft, it can achieve radial feed. The movable seat has a rotatable rotating block, a locking assembly for locking the rotating block, and an angle indicating assembly for indicating the rotation angle. A curved template is provided on the side of the rotating block facing the support shaft.

[0005] Preferably, the base includes a bottom plate and two side plates vertically disposed on the bottom plate, and the support groove is disposed at the top of the side plates for supporting the support shaft.

[0006] Preferably, the base plate is provided with two parallel guide grooves spaced apart from each other, and the two side plates are respectively embedded in the two guide grooves and connected by screws. The guide grooves can ensure the installation accuracy between the side plates and the base plate and avoid affecting the surface detection results of the threaded components.

[0007] Preferably, the guide rail consists of two parallel sliding grooves spaced apart, and the two sides of the movable seat are slidably connected to the two sliding grooves.

[0008] Preferably, each of the grooves is slidably connected to a slider, and the movable seat is assembled and connected to the two sliders with screws. The vertical cross-section of the groove and the slider is T-shaped, which can be disassembled when necessary, making it convenient for maintenance and replacement.

[0009] Preferably, the upper end of the movable seat is provided with a semi-circular groove, and the lower end of the rotating block is an arc-shaped surface that matches the semi-circular groove, so that the rotating block is in the semi-circular groove and rotates along it.

[0010] Preferably, the locking assembly includes an arc-shaped adjustment groove and a locking screw on the movable seat. The locking screw passes through the arc-shaped adjustment groove and is threadedly connected to the rotating block. When the locking screw is tightened, the rotating block can be pressed and fixed on the movable seat.

[0011] Preferably, the curved surface template is detachably connected to the rotating block, which facilitates the replacement of a standard curved surface template that matches the curved surface profile of the threaded element to be tested.

[0012] Preferably, one end of the curved template is provided with a lug, which is connected to a slot provided on the rotating block for easy assembly and disassembly.

[0013] Preferably, the angle indicating device includes an angle disk on the rotating block and an indicator line or pointer on the movable seat that cooperates with the scale lines of the angle disk, preferably an indicator line, which makes the structure simpler.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) The angle of the rotating block of this utility model can be freely adjusted to meet the inspection requirements of various thread components with different helix angles. The curved template and the rotating block are detachably connected. The curved template can be replaced to adapt to thread components with different curved contours, which significantly reduces the manufacturing cost of the tooling. (2) This utility model has a simple structure and is easy to operate. The testing personnel can quickly complete the entire process of clamping, adjustment and testing, which can meet the needs of rapid batch testing on the production site and is suitable for promotion. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from another perspective; Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle; Figure 4This is a schematic diagram of the movable base structure of this utility model; Figure 5 This is a schematic diagram of the exploded structure of the movable seat of this utility model; In the diagram: 1. Base, 101. Base plate, 1011. Guide groove, 102. Side plate, 1021. Support groove, 2. Support shaft, 3. Guide rail, 4. Moving seat, 401. Semi-circular groove, 402. Arc-shaped adjustment groove, 5. Rotating block, 501. Slot, 6. Curved template, 601. Lug, 7. Screw, 8. Slider, 9. Locking screw, 10. Angle plate, 11. Indicator line or pointer, 12. Threaded element. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] In the description of this utility model, it should be understood that the terms "middle", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] like Figure 1 and Figure 2As shown, a tooling for inspecting the curved surface of a threaded component includes a base 1 and a support shaft 2 for mounting the threaded component to be tested. The support shaft is a splined shaft adapted to the threaded component. The base includes a base plate 101 and two side plates 102 perpendicularly mounted on the base plate. Each side plate has a support groove 1021 at its top. The journals at both ends of the support shaft rest in the two support grooves. The support grooves are semi-circular and match the outer diameter of the journals of the support shaft. The base plate has two parallel guide grooves 1011 spaced apart from each other. The two side plates are respectively embedded in the two guide grooves and assembled and connected by screws 7. The bottom of the base plate has countersunk holes, and the screws 7 are installed in the countersunk holes. The guide grooves can ensure the installation accuracy between the side plates and the base plate and avoid affecting the surface inspection results of the threaded component.

[0021] like Figure 1 , Figure 3 and Figure 4 As shown, the base is also equipped with a guide rail 3 perpendicular to the axis of the support shaft. A movable seat 4 is slidably connected to the guide rail. The guide rail consists of two parallel grooves spaced apart. The two sides of the movable seat are slidably connected to the two grooves. A slider 8 is slidably connected in each groove. The movable seat and the two sliders are assembled and connected by screws. The vertical cross-section of the grooves and sliders is T-shaped, which can be disassembled when necessary for easy maintenance and replacement. The movable seat is located on one side of the support shaft. When it slides along the guide rail toward the support shaft, it can achieve radial feed.

[0022] Combination Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the movable base is equipped with a rotatable rotating block 5, a locking assembly for locking the rotating block, and an angle indicator assembly for indicating the rotation angle. The upper end of the movable base has a semi-circular groove 401, and the lower end of the rotating block is an arc-shaped surface that matches the semi-circular groove, allowing the rotating block to rotate within and along the semi-circular groove. The locking assembly includes an arc-shaped adjusting groove 402 and a locking screw 9 on the movable base. The locking screw passes through the arc-shaped adjusting groove and is threadedly connected to the rotating block. When the locking screw is tightened, the rotating block can be pressed and fixed to the movable base. A curved template 6 is provided on the side of the rotating block facing the support shaft. The curved template is detachably connected to the rotating block, facilitating the replacement of a standard curved template that matches the curved surface profile of the threaded element to be tested. In this embodiment, one end of the curved template has a lug 601, which engages with a slot 501 on the rotating block for easy assembly and disassembly. The angle indicating device includes an angle disk 10 mounted on a rotating block and an indicator line or pointer 11 mounted on a movable base and cooperating with the scale lines of the angle disk. In this embodiment, it is an indicator line, which makes the structure simpler.

[0023] The specific process for thread inspection using this invention is as follows: (1) Select the corresponding standard surface template 6 according to the surface profile parameters of the threaded element 12 to be tested and install it in the slot 501 of the rotating block 5; (2) According to the theoretical helix angle of the threaded element, rotate the rotating block 5 in the semi-circular groove 401. By observing the relative position of the scale line on the angle plate 10 and the indicator line 11 on the moving seat 4, precisely adjust the rotating block 5 to the theoretical helix angle position, and then tighten the locking screw 9 to lock the rotating block 5 in place. (3) Place the threaded element 12 to be tested onto the support shaft 2, and then place the journals at both ends of the support shaft 2 into the support grooves 1021 of the two side plates 102 respectively; (4) The inspector pushes the movable seat 4 horizontally, so that it slides along the groove 3 on the base plate 101 towards the support shaft 2, so that the curved template 6 is embedded in one of the thread grooves of the thread element 12 (if necessary, the thread element 12 can be moved axially along the support shaft 2 so that the curved template 6 and the thread groove are in the same position). If the curved template 6 cannot be fully embedded in the thread groove, or although it can be embedded, but there is a gap between the working curved surface of the curved template 6 and the thread groove curved surface of the thread element 12 and it cannot be fully fitted, the inspection result is deemed unqualified; otherwise, if the curved template 6 can be fully embedded in the thread groove of the thread element 12 and the working curved surface of the curved template 6 is fully fitted with the thread groove curved surface of the thread element 12, the curved surface of the thread element 12 is deemed qualified.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all changes falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

Claims

1. A tooling for inspecting the curved surface of threaded components, characterized in that: The device includes a base and a support shaft for mounting the threaded element to be tested. The base has two support grooves for placing the support shaft. The base also has a guide rail perpendicular to the axis of the support shaft. A movable seat is slidably connected to the guide rail. The movable seat has a rotatable rotating block, a locking assembly for locking the rotating block, and an angle indicator assembly for indicating the rotation angle. A curved template is provided on the side of the rotating block facing the support shaft.

2. The tooling for inspecting the curved surface of a threaded component as described in claim 1, characterized in that: The base includes a bottom plate and two side plates vertically disposed on the bottom plate, and the support groove is disposed at the top of the side plates.

3. The tooling for inspecting the curved surface of a threaded component as described in claim 2, characterized in that: The base plate is provided with two parallel guide grooves spaced apart from each other, and the two side plates are respectively embedded in the two guide grooves and connected by screws.

4. The tooling for inspecting the curved surface of a threaded component as described in claim 1, characterized in that: The guide rail consists of two parallel sliding grooves spaced apart, and the two sides of the movable seat are slidably connected to the two sliding grooves.

5. The tooling for inspecting the curved surface of a threaded component as described in claim 4, characterized in that: Each of the grooves is slidably connected to a slider, and the movable seat is assembled and connected to the two sliders by screws.

6. The tooling for inspecting the curved surface of a threaded component as described in claim 1, characterized in that: The upper end of the movable seat is provided with a semi-circular groove, and the lower end of the rotating block is an arc-shaped surface that matches the semi-circular groove, so that the rotating block is in the semi-circular groove and rotates along it.

7. The tooling for inspecting the curved surface of a threaded component as described in claim 1, characterized in that: The locking assembly includes an arc-shaped adjustment groove and a locking screw on the movable base, the locking screw passing through the arc-shaped adjustment groove and threadedly connected to the rotating block.

8. The tooling for inspecting the curved surface of a threaded component as described in claim 1, characterized in that: The curved template is detachably connected to the rotating block.

9. The tooling for inspecting the curved surface of a threaded component as described in claim 8, characterized in that: One end of the curved template is provided with a lug, which is connected to a slot provided on the rotating block.

10. The tooling for inspecting the curved surface of a threaded component as described in claim 1, characterized in that: The angle indicating component includes an angle disk on the rotating block and an indicator line or pointer on the movable seat that mates with the scale lines of the angle disk.

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