Jig for quickly checking angle of hole in product

Abstract

The utility model relates to product detection tool technical field, specifically disclose a kind of jig of the quick inspection product inner hole angle, including base and fixed assembly, still include inspection core rod, fixed assembly includes locking screw and positioning pin, positioning pin is vertically arranged on base surface, locking screw is threadedly connected in base, and it is used for locking the product to be inspected, the positioning fixation of realization product inspection, the outer peripheral surface angle of inspection core rod is compatible with the standard angle of product inner hole, for inserting product inner hole to judge angle whether eligible.The utility model realizes the quick, convenient inspection of product inner hole angle, solves the problem of product inner hole angle detection in the prior art, relies on precision instrument, time-consuming and laborious, low efficiency.

Description

Technical Field

[0001] This utility model relates to the field of product testing tools, specifically to a fixture that can quickly inspect the angle of the inner hole of a product. Background Technology

[0002] In the field of machining, the angular accuracy of products with internal hole angles, such as tapered internal hole parts and oblique hole parts, directly affects the assembly effect and performance. Currently, the industry commonly uses 2D or 3D coordinate measuring machines to inspect the internal hole angles of such products.

[0003] While these instruments offer high accuracy, their operation is complex, requiring professional personnel and a long testing time, typically 5-10 minutes per piece. This makes them unsuitable for rapid inspection in mass production scenarios, limiting production efficiency and resulting in high testing costs, thus failing to meet usage requirements. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides a fixture for quickly inspecting the inner hole angle of a product, enabling rapid and convenient inspection of the inner hole angle and solving the problems of the existing technology, which relies on precision instruments, is time-consuming and labor-intensive, and has low efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A fixture for quickly inspecting the inner hole angle of a product includes a base and a fixing component, and also includes an inspection mandrel. The fixing component includes a locking screw and a positioning pin. The positioning pin is vertically and detachably mounted on the surface of the base. The locking screw is threaded to the base and is used to lock the product to be inspected, thereby achieving positioning and fixation during product inspection. The outer circumferential angle of the inspection mandrel is adapted to the standard angle of the inner hole of the product and is used to insert into the inner hole of the product to determine whether the angle is qualified.

[0007] Preferably, the insertion end of the test mandrel is provided with a tapered guide portion, the taper of which is 15°-30°.

[0008] Preferably, the locating pin has an adjustable structure, including a fixed seat and a movable pin body. The fixed seat is fixedly connected to the base, and the movable pin body is connected to the fixed seat by a thread, and its extension length can be adjusted axially.

[0009] Preferably, it also includes an angle deviation indicator component, which includes an annular scale at the tail of the test mandrel and a pointer on the base. The test mandrel can rotate around its own axis, and the relative position of the pointer and the scale displays the inner hole angle deviation value.

[0010] Preferably, the base surface is provided with a positioning groove that matches the shape of the product to be inspected, and the positioning pin and locking screw are located on both sides of the positioning groove.

[0011] The beneficial effects of this utility model are as follows: By setting a positioning pin that is vertically and detachably set on the base surface and a locking screw that is threadedly connected to the base to press the product to be inspected into a fixed component, the positioning and fixing of the product during inspection can be quickly achieved. The operation is convenient and does not require complicated procedures. With the inspection mandrel whose outer peripheral surface angle is adapted to the standard angle of the product's inner hole, it is only necessary to insert the inspection mandrel into the product's inner hole to directly determine whether the inner hole angle is qualified. No professional personnel are required to operate, which greatly simplifies the inspection process. Compared with the inspection time of existing two-dimensional and three-dimensional measuring instruments, the single inspection time is significantly shortened, which meets the rapid inspection needs in mass production scenarios and effectively improves production efficiency. At the same time, it does not rely on expensive measuring instruments, reducing inspection costs. Moreover, the precise adaptation of the inspection mandrel to the standard angle ensures the reliability of the inspection results and can guarantee the accuracy of the product's inner hole angle, thereby ensuring the product's assembly effect and performance. Attached Figure Description

[0012] Figure 1 This is an exploded structural diagram of Embodiment 1 of the present invention;

[0013] Figure 2 This is an exploded view of Embodiment 1 of the present invention from a bottom angle.

[0014] Figure 3 This is an exploded structural diagram of Embodiment 2 of the present invention;

[0015] Figure 4 This is an exploded view of Embodiment 2 of the present invention from a bottom angle.

[0016] Explanation of the symbols in the attached diagram: 10-base, 11-inspection mandrel, 12-locking screw, 13-positioning pin, 14-positioning hole, 15-positioning area, 16-fixed seat, 17-movable pin, 18-positioning groove, 20-product. Detailed Implementation

[0017] To more clearly illustrate the structural features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments:

[0018] Example 1: As Figure 1-2As shown, a fixture for quickly inspecting the inner hole angle of a product includes a base 10, a fixing component, and an inspection mandrel 11. The base 10 is made of steel and has a positioning area 15 on its surface that matches the shape of the product 20 to be inspected, for quick placement of the product 20. The fixing component includes locking screws 12 and positioning pins 13. The positioning pin 13 is fixed to one side of the positioning area 15 of the base 10 through a positioning hole 14, and its end is in contact with the mating surface of the product 20, achieving unilateral positioning of the product 20. Two locking screws 12 are provided and are threadedly connected to the base 10, located on the other side of the positioning area 15. After tightening, their ends press against the surface of the product 20, forming a bidirectional fixation with the positioning pins 13 to ensure the stability of the product 20 during inspection. The inspection mandrel 11 is made of mold steel and is heat-treated to ensure hardness and wear resistance. Its outer circumferential angle matches the product 20's inner hole angle. The standard angle of the inner hole of product 20 is consistent. The insertion end of the inspection mandrel 11 is provided with a tapered guide to facilitate quick alignment with the inner hole of product 20 and reduce alignment time. The tail of the inspection mandrel 11 is provided with an annular scale, and a pointer is provided at the corresponding position on the base 10. The inspection mandrel 11 can rotate around its own axis. After the mandrel is inserted into the inner hole, the mandrel is slowly rotated. The deviation value of the inner hole angle can be read intuitively by the relative position of the pointer and the scale. When in use, the product 20 to be inspected is placed directly into the positioning area 15, so that one side is attached to the end of the positioning pin 13. Then, the locking screw 12 is tightened to press the product 20. The tapered guide of the inspection mandrel 11 is aligned with the inner hole of product 20. If it can be inserted smoothly and rotated without jamming, it means that the inner hole angle is qualified. The specific deviation value can be read by the pointer and the scale. If it cannot be inserted or jams when rotating, it means that the inner hole angle is unqualified.

[0019] Example 2: Figure 3-4As shown, a fixture for quickly inspecting the inner hole angle of a product includes a base 10, a fixing component, and an inspection mandrel 11. The base 10 is made of steel and has a positioning groove 18 on its surface that matches the shape of the product 20 to be inspected, for quick placement of the product 20. The fixing component includes locking screws 12 and positioning pins 13. The positioning pin 13 is an adjustable structure, consisting of a fixed seat 16 and a movable pin 17. The fixed seat 16 is welded to one side of the positioning groove 18 of the base 10. The movable pin 17 is connected to the fixed seat 16 by threads. Rotating the movable pin 17 can adjust its extension length to accommodate positioning of products 20 of different sizes. Two locking screws 12 are provided and connected to the base 10 by threads, located on the other side of the positioning groove 18. After tightening, their ends press against the surface of the product 20 to fix the product 20. The inspection mandrel 11 is made of mold steel and is heat-treated to ensure hardness. The circumferential angle is consistent with the standard angle of the inner hole of product 20. The insertion end of the inspection mandrel 11 is provided with a tapered guide to facilitate quick alignment with the inner hole of product 20. The tail of the inspection mandrel 11 is provided with an annular scale, and a pointer is provided at the corresponding position on the base 10. The inspection mandrel 11 can rotate around its own axis. After the mandrel is inserted into the inner hole, the mandrel is slowly rotated. The deviation value of the inner hole angle can be read intuitively by the relative position of the pointer and the scale. When using, first adjust the extension length of the positioning pin 13 according to the size of product 20, put the product 20 to be inspected into the positioning groove 18, so that one side of it is in contact with the positioning pin 13, and then tighten the locking screw 12 to press the product 20. Align the tapered guide of the inspection mandrel 11 with the inner hole of product 20. If it can be inserted smoothly and rotated without jamming, it means that the inner hole angle is qualified. The specific deviation value can be read by the pointer and the scale. If it cannot be inserted or jams when rotating, it means that the inner hole angle is unqualified.

[0020] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A jig for quickly checking the angle of a hole in a product, comprising a base and a fixing assembly, characterized in that: It also includes an inspection mandrel. The fixing components include a locking screw and a positioning pin. The positioning pin is vertically and detachably set on the base surface. The locking screw is threaded to the base and is used to lock the product to be inspected, so as to achieve positioning and fixing during product inspection. The outer circumferential angle of the inspection mandrel is adapted to the standard angle of the inner hole of the product and is used to insert into the inner hole of the product to determine whether the angle is qualified.

2. The product inner hole angle fast inspection jig according to claim 1, wherein: The insertion end of the test mandrel is provided with a tapered guide, the taper of which is 15°-30°.

3. The product inner hole angle fast inspection fixture according to claim 1, wherein: The locating pin is an adjustable structure, including a fixed seat and a movable pin. The fixed seat is fixedly connected to the base, and the movable pin is connected to the fixed seat by a thread, allowing for axial adjustment of its extension length.

4. The jig for quickly checking the angle of a hole in a product according to any one of claims 1 to 3, characterized in that: It also includes an angle deviation indicator component, which includes an annular scale at the tail of the test mandrel and a pointer on the base. The test mandrel can rotate around its own axis, and the relative position of the pointer and the scale displays the inner hole angle deviation value.

5. The fixture for rapidly inspecting the inner hole angle of a product according to any one of claims 1-3, characterized in that: The base surface is provided with a positioning groove that matches the shape of the product to be inspected, and the positioning pin and locking screw are located on both sides of the positioning groove.

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