Rapid detection tool for inner taper hole

Abstract

The utility model discloses a rapid detection tool for an inner taper hole, which relates to the technical field of size detection, can solve the technical problem of low angle detection efficiency of the inner taper hole, and comprises a base, a taper detection shaft and a taper movable detection block, the bottom of the taper detection shaft lower section is connected with the top of the base, the taper detection shaft upper section and the taper detection shaft lower section are both cylindrical, and the outer diameter of the taper detection shaft upper section is larger than that of the taper detection shaft lower section; the taper movable detection block upper section is cylindrical, the outer diameter of the taper movable detection block upper section is larger than the outer diameter of the taper detection shaft upper section, the inner diameter of the taper movable detection block hole is smaller than the outer diameter of the taper detection shaft upper section, and the taper movable detection block is arranged on the outer side of the taper detection shaft lower section in a sliding and sleeving mode through the taper movable detection block hole. The device can be used for detecting the angle of the inner taper hole, and has the technical advantages of low cost, reliable precision and high detection efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of size detection, in particular to a rapid detection tool for inner tapered holes. Background Art

[0002] Workpieces with internal tapered holes are widely used in numerous industrial fields, including machinery manufacturing, parts processing, and aerospace. The taper of the internal tapered hole has a crucial impact on the assembly accuracy, connection stability, and overall equipment performance of the workpiece. It is directly related to the fit accuracy between the workpieces, which in turn affects the safe and stable operation of the product.

[0003] The internal tapered hole of a product is typically small and space is limited. Conventional measuring tools like angle rulers cannot penetrate deeply into the hole for accurate measurement. Traditionally, handheld taper gauges have been used to measure the taper of internal tapers. This measurement also requires observation with mold oil, resulting in relatively low accuracy and efficiency.

[0004] In recent years, the industry has begun to popularize the use of profilometers or three-coordinate measuring machines for internal taper detection, but the following disadvantages still exist:

[0005] Complex operation: The operation procedures of profilometers and coordinate measuring machines are complex and require professional technicians to program and debug. In large-scale production environments, each workpiece inspection consumes a considerable amount of time, making it difficult to meet the requirements of efficient production.

[0006] High equipment costs: The initial investment in purchasing a profilometer and a three-dimensional coordinate measuring machine is huge, and the maintenance costs of the equipment are also high. Regular calibration and replacement of parts are required, which undoubtedly increases the operating costs of the enterprise. Especially for small and medium-sized enterprises, the economic pressure is relatively large.

[0007] In summary, the existing internal taper hole taper detection technology has obvious shortcomings in efficiency, cost and scope of application. Utility Model Content

[0008] In order to solve one or more technical problems in the prior art, the utility model provides a rapid detection fixture for inner tapered holes.

[0009] A quick detection fixture for inner tapered holes:

[0010] Including base, taper inspection shaft and taper movable inspection block;

[0011] The taper axis detection device comprises a vertically connected taper axis detection upper section and a taper axis detection lower section;

[0012] The bottom of the tapered shaft detection lower section is connected to the top of the base, the tapered shaft detection upper section and the tapered shaft detection lower section are both cylindrical, the outer diameter of the tapered shaft detection upper section is larger than the outer diameter of the tapered shaft detection lower section, and the upper edge of the tapered shaft detection upper section is a first detection edge;

[0013] The taper movable check block includes a taper movable check block upper section and a taper movable check block lower section vertically connected, and a taper movable check block hole passing through the taper movable check block upper section and the taper movable check block lower section;

[0014] The upper section of the tapered movable inspection block is cylindrical, the outer diameter of the upper section of the tapered movable inspection block is larger than the outer diameter of the upper section of the tapered inspection shaft, the inner diameter of the tapered movable inspection block hole is smaller than the outer diameter of the upper section of the tapered inspection shaft, the tapered movable inspection block is slidably sleeved on the outer side of the lower section of the tapered inspection shaft through the tapered movable inspection block hole, and the upper edge of the upper section of the tapered movable inspection block is the second detection edge.

[0015] Preferably, it also includes a gauge line inspection axis;

[0016] The gauge wire inspection axis comprises an upper section, a middle section and a lower section of the gauge wire inspection axis which are vertically connected in sequence from top to bottom;

[0017] The bottom of the lower section of the gauge wire inspection shaft is connected to the top of the base, the upper section of the gauge wire inspection shaft is a frustum, the taper of the upper section of the gauge wire inspection shaft is greater than the standard taper of the workpiece to be measured, the middle section of the gauge wire inspection shaft is a cylinder, the lower edge of the upper section of the gauge wire inspection shaft coincides with the upper edge of the middle section of the gauge wire inspection shaft, and this coincident edge is the third detection edge, and the diameter of the third detection edge is equal to the diameter of the standard gauge wire of the workpiece to be measured.

[0018] Preferably, it further comprises a through-stop plate;

[0019] The stop plate includes a horizontally connected taper detection stop section and a taper detection through section, and a taper detection chute running through the middle of the taper detection stop section and the middle of the taper detection through section;

[0020] The stop plate is slidingly arranged between the upper end surface of the base and the lower end surface of the lower section of the taper movable detection block. The lower end surface of the stop plate is a plane. The upper end surface height of the taper detection stop section is higher than the upper end surface height of the taper detection through section. A first slope is provided at the junction of the upper end surface of the taper detection stop section and the upper end surface of the taper detection through section. The taper detection slide groove is slidingly arranged on the outside of the lower section of the taper detection shaft.

[0021] Preferably, it further comprises a through-stop plate;

[0022] The stop plate includes a taper detection stop section, a taper detection through section, and a taper detection guide section horizontally connected in sequence from left to right, and a taper detection chute running through the middle of the taper detection stop section, the middle of the taper detection through section, and the middle of the taper detection guide section;

[0023] The stop plate is slidingly arranged between the upper end surface of the base and the lower end surface of the lower section of the taper movable detection block, the lower end surface of the stop plate is a plane, the upper end surface height of the taper detection stop section is higher than the upper end surface height of the taper detection through section, the upper end surface height of the taper detection through section is higher than the upper end surface height of the taper detection guide section, a first slope is provided at the connection between the upper end surface of the taper detection stop section and the upper end surface of the taper detection through section, a second slope is provided at the connection between the upper end surface of the taper detection through section and the upper end surface of the taper detection guide section, and the taper detection slide groove is slidingly arranged on the outside of the lower section of the taper detection shaft.

[0024] Preferably, it further comprises a through-stop plate;

[0025] The through-stop plate includes a gauge line detection stop section and a gauge line detection through section connected horizontally, and a gauge line detection chute running through the middle of the gauge line detection stop section and the middle of the gauge line detection through section;

[0026] The vertical distance from the third detection edge to the plane where the lower end surface of the middle section of the gauge line detection axis is located is smaller than the vertical distance from the standard gauge line of the workpiece to the plane where the standard lower end surface of the workpiece is located;

[0027] The pass-stop plate is slidingly arranged between the upper end surface of the base and the lower end surface of the middle section of the gauge wire inspection shaft. The lower end surface of the pass-stop plate is a plane. The upper end surface height of the gauge wire detection stop section is higher than the upper end surface height of the gauge wire detection through section. A third slope is provided at the junction of the upper end surface of the gauge wire detection stop section and the upper end surface of the gauge wire detection through section. The gauge wire detection slide groove is slidingly arranged on the outside of the lower section of the gauge wire inspection shaft.

[0028] Preferably, it further comprises a through-stop plate;

[0029] The stop plate includes a gauge line detection stop section, a gauge line detection through section, and a gauge line detection guide section that are horizontally connected in sequence from right to left, and a gauge line detection chute that passes through the middle of the gauge line detection stop section, the middle of the gauge line detection through section, and the gauge line detection guide section;

[0030] The vertical distance from the third detection edge to the plane where the lower end surface of the middle section of the gauge line detection axis is located is smaller than the vertical distance from the standard gauge line of the workpiece to the plane where the standard lower end surface of the workpiece is located;

[0031] The pass-stop plate is slidingly arranged between the upper end surface of the base and the lower end surface of the middle section of the gauge wire inspection shaft. The lower end surface of the pass-stop plate is a plane. The upper end surface height of the gauge wire detection stop section is higher than the upper end surface height of the gauge wire detection through section. The upper end surface height of the gauge wire detection through section is higher than the upper end surface height of the gauge wire detection guide section. A third slope is provided at the connection between the upper end surface of the gauge wire detection stop section and the upper end surface of the gauge wire detection through section. A fourth slope is provided at the connection between the upper end surface of the gauge wire detection through section and the upper end surface of the gauge wire detection guide section. The gauge wire detection slide groove is slidingly arranged on the outside of the lower section of the gauge wire inspection shaft.

[0032] Preferably, it further comprises a through-stop plate;

[0033] The pass-stop plate includes a taper detection through section, a taper detection stop section, a gauge line detection stop section, and a gauge line detection through section horizontally connected in sequence from right to left, a taper detection chute running through the middle of the taper detection stop section and the middle of the taper detection through section, and a gauge line detection chute running through the middle of the gauge line detection stop section and the middle of the gauge line detection through section;

[0034] The right part of the stop plate is slidably arranged between the upper end surface of the base and the lower end surface of the lower section of the taper movable detection block, the lower end surface of the right part of the stop plate is a plane, the upper end surface height of the taper detection stop section is higher than the upper end surface height of the taper detection through section, a first slope is provided at the junction of the upper end surface of the taper detection stop section and the upper end surface of the taper detection through section, and the taper detection slide groove is slidably arranged on the outer side of the lower section of the taper detection shaft;

[0035] The vertical distance from the third detection edge to the plane where the lower end surface of the middle section of the gauge line detection axis is located is smaller than the vertical distance from the standard gauge line of the workpiece to the plane where the standard lower end surface of the workpiece is located;

[0036] The left part of the pass-stop plate is slidably arranged between the upper end surface of the base and the lower end surface of the middle section of the gauge wire inspection shaft. The lower end surface of the left part of the pass-stop plate is a plane. The upper end surface height of the gauge wire detection stop section is higher than the upper end surface height of the gauge wire detection through section. A third slope is provided at the junction of the upper end surface of the gauge wire detection stop section and the upper end surface of the gauge wire detection through section. The gauge wire detection slide groove is slidably arranged on the outside of the lower section of the gauge wire inspection shaft.

[0037] Preferably, at least two base bosses with the same horizontal height are provided on the top of the base, at least one base groove is provided between the two base bosses, and the stop plate is slidably arranged above the at least two base bosses and at least one base groove.

[0038] Preferably, the taper test axis and / or the gauge wire test axis are detachably connected to the base.

[0039] Preferably, the base is provided with a stepped hole, and the bottom of the taper inspection shaft and the bottom of the gauge wire inspection shaft are both provided with threaded holes. The taper inspection shaft and the gauge wire inspection shaft are connected to the stepped hole through bolts and the threaded holes, and the bolt head of the bolt does not protrude outside the stepped hole.

[0040] Beneficial effects of the utility model:

[0041] Low Cost: From a manufacturing cost perspective, all components of this utility model are made from readily available parts through conventional machining, eliminating the need to purchase expensive special materials or custom-build complex parts, significantly reducing raw material costs. Compared to profilometers and coordinate measuring machines, this eliminates the hundreds of thousands or even millions of dollars in equipment procurement costs and reduces subsequent maintenance costs. From a cost perspective, the operation process does not require specialized technicians; ordinary workers can operate it with simple training, saving labor costs and significantly reducing the financial burden on businesses, especially small and medium-sized enterprises.

[0042] Reliable Precision: The components of this inspection fixture are simple in shape. The base, taper check shaft, taper movable check block, gauge wire check shaft, and stop plate are all easily manufactured in the machining field. This simple design makes dimensional accuracy easier to control during machining, achieving high precision standards through conventional machining techniques. The simple shape also helps improve component stability, making it less likely to deform during long-term use, thereby ensuring the reliability and accuracy of test results and providing a solid foundation for product quality control.

[0043] Efficient detection: In terms of detection efficiency, the utility model has significant advantages. Traditional methods of detecting inner tapered holes, such as using handheld taper gauges for measurement, are cumbersome and time-consuming; and profilometers and three-coordinate measuring machines require a lot of time for programming and debugging to detect a single workpiece. This inspection tool only requires manual movement of the pass-stop plate to quickly determine whether the part is qualified. During the gauge line detection and taper detection process, the detection conclusion can be quickly drawn through simple component coordination and intuitive observation, which can greatly improve the detection efficiency, meet the demand for efficient detection in large-scale production environments, and effectively improve the production efficiency of the enterprise.

[0044] Versatile Functionality: This new device not only detects the taper of an internal tapered hole but also adds the ability to detect the position of the gauge line. In actual production, the position of the gauge line is crucial for ensuring the precision of the fit between the internal tapered hole and other components, a fact often overlooked by existing technologies. By providing a gauge line inspection axis and a corresponding stop-and-go plate structure, this new device effectively detects the position of the gauge line, enriching the detection dimension and providing more comprehensive technical support for ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0046] Figure 1 This is a schematic diagram of a quick detection fixture for inner tapered holes according to an embodiment of the utility model. Figure 1 ;

[0047] Figure 2 This is a schematic diagram of a quick detection fixture for inner tapered holes according to an embodiment of the utility model. Figure 2 ;

[0048] Figure 3 This is a schematic diagram of a gauge line inspection axis according to an embodiment of the present utility model. Figure 3 ;

[0049] Figure 4 This is a schematic diagram of a pass-stop plate according to an embodiment of the present utility model. Figure 1 ;

[0050] Figure 5 This is a schematic diagram of a pass-stop plate according to an embodiment of the present utility model. Figure 2 ;

[0051] In the picture:

[0052] 1. Base; 11. Base boss; 12. Base groove; 13. Step hole;

[0053] 2. Taper shaft inspection; 21. Upper section of taper shaft inspection; 211. First inspection edge; 22. Lower section of taper shaft inspection;

[0054] 3. Taper movable inspection block; 31. Upper section of taper movable inspection block; 311. Second inspection edge; 32. Lower section of taper movable inspection block; 33. Taper movable inspection block hole;

[0055] 4. Gauge line inspection axis; 41. Gauge line inspection axis upper section; 42. Gauge line inspection axis middle section; 421. Third inspection edge; 43. Gauge line inspection axis lower section;

[0056] 5. Stop plate; 51. Taper detection stop section; 52. Taper detection through section; 53. Taper detection chute; 541. First slope; 542. Second slope; 543. Third slope; 544. Fourth slope; 55. Taper detection guide section; 56. Gauge line detection stop section; 57. Gauge line detection through section; 58. Gauge line detection chute; 59. Gauge line detection guide section;

[0057] 6. The workpiece to be measured. DETAILED DESCRIPTION

[0058] The utility model can solve the problem of detecting the angle of the tapered hole and the position of the tapered hole gauge line of a workpiece with an inner tapered hole during production inspection. The utility model has low implementation cost, is easy to operate, and has high efficiency. It can quickly determine whether the inner tapered hole of the product is qualified and can also measure the specific values of the relevant parameters.

[0059] In the description of this application, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and do not require that this application must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this application. The terms "connected", "connected", and "set" used in this application should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0060] Example 1:

[0061] like Figures 1 to 5 As shown, a quick detection fixture for inner tapered holes:

[0062] It includes a base 1, a taper inspection shaft 2 and a taper movable inspection block 3;

[0063] The taper shaft detection unit 2 comprises a vertically connected taper shaft detection unit upper section 21 and a taper shaft detection unit lower section 22;

[0064] The bottom of the tapered shaft detection lower section 22 is connected to the top of the base 1. The tapered shaft detection upper section 21 and the tapered shaft detection lower section 22 are both cylindrical. The outer diameter of the tapered shaft detection upper section 21 is larger than the outer diameter of the tapered shaft detection lower section 22. The upper edge of the tapered shaft detection upper section 21 is a first detection edge 211.

[0065] The taper movable check block 3 includes a taper movable check block upper section 31 and a taper movable check block lower section 32 that are vertically connected, and a taper movable check block hole 33 that passes through the taper movable check block upper section 31 and the taper movable check block lower section 32;

[0066] The upper section 31 of the tapered movable inspection block is cylindrical, the outer diameter of the upper section 31 of the tapered movable inspection block is larger than the outer diameter of the upper section 21 of the tapered inspection shaft, the inner diameter of the tapered movable inspection block hole 33 is smaller than the outer diameter of the upper section 21 of the tapered inspection shaft, the tapered movable inspection block is slidably mounted on the outer side of the lower section 22 of the tapered inspection shaft through the tapered movable inspection block hole 33, and the upper edge of the upper section 31 of the tapered movable inspection block is the second detection edge 311.

[0067] During specific implementation, the base 1 serves as a basic support structure, providing a stable platform for the entire inspection fixture. The first inspection edge 211 is used to contact the upper part of the inner tapered hole of the workpiece 6 to be measured, and the second inspection edge 311 is used to contact the lower part of the inner tapered hole of the workpiece 6 to be measured. When detecting the taper of the inner tapered hole, the workpiece 6 to be measured is placed on the taper inspection shaft 2, so that the first inspection edge 211 contacts the upper part of the inner tapered hole of the workpiece 6 to be measured, and the second inspection edge 311 contacts the lower part of the inner tapered hole of the workpiece 6 to be measured. Since the diameters of the upper section 21 of the taper inspection shaft and the upper section 31 of the taper movable inspection block are known in the inspection fixture design stage, and the height of the taper inspection shaft 2 is fixed, the taper of the inner tapered hole can be calculated by measuring the distance from the lower end face of the taper movable inspection block 3 to the upper end face of the base 1, combined with the known dimensional data:

[0068] For example, when the first detection edge 211 contacts the upper portion of the inner tapered hole of the workpiece 6 and the second detection edge 311 contacts the lower portion of the inner tapered hole of the workpiece 6, the diameter of the upper section 21 of the taper detection shaft is a fixed value. The diameter of the upper section 31 of the taper movable check block is a fixed value. The vertical distance from the first detection edge 211 to the upper end surface of the base 1 is a fixed value. The vertical distance from the second detection edge 311 to the upper end surface of the base 1 is the measured value , then the taper of the inner cone hole is The calculation formula is: .

[0069] During specific testing, in addition to performing the aforementioned measurements and calculations, the workpiece 6 to be tested can also be placed on the taper inspection shaft 2, with the first inspection edge 211 of the upper section 21 of the taper inspection shaft contacting the upper portion of the tapered hole in the workpiece 6. The movable taper inspection block 3 is then moved upward, with the second inspection edge 311 of the upper section 31 of the movable taper inspection block contacting the lower portion of the tapered hole in the workpiece 6. Because the height of the taper inspection shaft 2 is fixed, the distance between the upper section 21 of the taper inspection shaft and the upper section 31 of the movable taper inspection block changes with changes in the taper of the taper hole. At this point, by measuring the distance from the lower end face of the movable taper inspection block 3 to the upper end face of the base 1, it is also possible to determine whether the taper of the workpiece 6 to be tested is acceptable. If this distance is within the pre-set acceptable range, the taper is acceptable; otherwise, it is unacceptable.

[0070] More specifically, the upper end surface of the base 1 in the present invention can be ground to a high degree of flatness to ensure detection accuracy; the clearance between the taper movable inspection block hole 33 and the taper inspection shaft lower section 22 can be controlled to a very small range, such as 0.01-0.03mm, to ensure detection accuracy while ensuring that the movable inspection block can slide smoothly. During specific processing, the lower end surface of the taper movable inspection block lower section 32 and the upper end surface of the taper movable inspection block upper section 31 are parallel planes. There are no specific requirements for the external shape of the taper movable inspection block lower section 32, and it can be cylindrical, annular, prismatic, or other external shapes.

[0071] Traditional methods for measuring the taper of internal tapers, such as handheld taper gauges, require observation with mold oil, are cumbersome and have low accuracy. While profilometers and three-dimensional coordinate measuring machines can achieve detection, they are complex to operate and have high equipment costs. The present utility model has a simple structure, consisting of common mechanical components, making it low-cost and easy to manufacture. Through the unique design of the taper inspection shaft 2 and the taper movable inspection block 3, it can achieve fast and efficient taper detection, eliminating the need for specialized technicians to operate complex equipment.

[0072] Example 2:

[0073] Furthermore, it also includes a gauge line inspection axis 4;

[0074] The gauge wire inspection shaft 4 includes an upper section 41, a middle section 42 and a lower section 43 of the gauge wire inspection shaft which are vertically connected in sequence from top to bottom.

[0075] The bottom of the lower section 43 of the gauge wire inspection shaft is connected to the top of the base 1, the upper section 41 of the gauge wire inspection shaft is a frustum, the taper of the upper section 41 of the gauge wire inspection shaft is greater than the standard taper of the workpiece 6 to be measured, the middle section 42 of the gauge wire inspection shaft is a cylinder, the lower edge of the upper section 41 of the gauge wire inspection shaft coincides with the upper edge of the middle section 42 of the gauge wire inspection shaft, and this coincident edge is the third detection edge 421, and the diameter of the third detection edge 421 is equal to the diameter of the standard gauge wire of the workpiece 6 to be measured.

[0076] In practice, the gauge line is defined by selecting a fixed diameter section within the conical surface of the taper. This section serves as the gauge line. By specifying the distance from the gauge line to the large end plane (lower end face) or small end plane (upper end face) of the inner taper during the design and production stages, the taper accuracy can be precisely controlled. The inner taper of a product is often small and space-constrained, making it difficult to accurately measure using conventional angle rulers. Furthermore, because the gauge line is a virtual section line, its position cannot be verified using conventional measuring fixtures.

[0077] The standard taper of a workpiece is the theoretically optimal value for the taper of a 6-inch internal taper hole, determined during the product design phase based on factors such as the workpiece's function and its fit with other components. The standard gauge line of a workpiece is the theoretically optimal value for the gauge line of a 6-inch internal taper hole, determined during the product design phase based on factors such as the workpiece's function and its fit with other components.

[0078] During the specific inspection, the workpiece 6 is placed on the gauge wire inspection shaft 4 so that the third inspection edge 421 contacts the inner tapered hole of the workpiece 6. By measuring the distance between the large end plane of the workpiece 6 (the lower end surface of the workpiece 6) and the upper end surface of the base 1, combined with the known dimensional data of the gauge wire inspection shaft 4, it can be determined whether the gauge wire position is qualified. For example:

[0079] The distance from the standard gauge line of the workpiece to the standard lower end face of the workpiece is , this distance can be set during the product design phase; the actual distance from the lower end face of the workpiece 6 to the upper end face of the base 1 is , this distance can be measured by a dimension measuring tool (such as a vernier caliper, a feeler gauge, etc.); the distance from the third detection edge 421 to the upper end surface of the base 1 is , this distance is a fixed value; then the distance from the actual gauge line of the workpiece 6 to the actual lower end surface of the workpiece 6 is ;

[0080] when ( is the allowable error range), the gauge line position is qualified; when When , the gauge line position is unqualified.

[0081] More specifically, the taper of the upper section 41 of the gauge wire inspection shaft can be greater than the maximum value of the standard taper of the workpiece 6 being measured. For example, when the standard taper of the workpiece 6 being measured is 1:5, the taper of the upper section 41 of the gauge wire inspection shaft can be set to 1:4.8; or, when the standard taper of the workpiece 6 being measured is 1:10, the taper of the upper section 41 of the gauge wire inspection shaft can be set to 1:9.5; or, when the standard taper of the workpiece 6 being measured is 1:20, the taper of the upper section 41 of the gauge wire inspection shaft can be set to 1:19. This design helps ensure that the upper section 41 of the gauge wire inspection shaft does not interfere with the workpiece 6 being measured while also providing good guidance for the workpiece 6 during the inspection process. The guide cone angle of the upper section 41 of the gauge wire inspection shaft is slightly greater than the maximum angle of the tapered hole of the workpiece 6 being measured, effectively preventing the workpiece 6 from tilting during the inspection process and ensuring inspection accuracy.

[0082] The shape of the lower section 43 of the gauge wire inspection shaft is preferably cylindrical, but is not limited to a cylindrical shape. For example, it may also be a prismatic shape.

[0083] The utility model realizes the effective detection of the position of the gauge line. While the traditional detection technology only focuses on the taper detection, the utility model incorporates the gauge line detection into the inspection function, enriches the detection content, and improves the comprehensiveness of the detection.

[0084] Example 3:

[0085] Furthermore, it also includes a pass-stop plate 5;

[0086] The stop plate 5 includes a horizontally connected taper detection stop section 51 and a taper detection through section 52, and a taper detection chute 53 that passes through the middle of the taper detection stop section 51 and the middle of the taper detection through section 52;

[0087] The stop plate 5 is slidably set between the upper end surface of the base 1 and the lower end surface of the lower section 32 of the taper movable detection block. The lower end surface of the stop plate 5 is a plane. The upper end surface height of the taper detection stop section 51 is higher than the upper end surface height of the taper detection through section 52. A first slope 541 is provided at the connection between the upper end surface of the taper detection stop section 51 and the upper end surface of the taper detection through section 52. The taper detection slide groove 53 is slidably set on the outside of the lower section 22 of the taper detection shaft.

[0088] In specific implementation, when the taper detection section 52 of the stop plate 5 is located between the upper end surface of the base 1 and the lower end surface of the lower section 32 of the taper movable detection block, and the first detection edge 211 contacts the upper portion of the inner tapered hole of the workpiece 6 being measured, and the second detection edge 311 contacts the lower portion of the inner tapered hole of the workpiece 6 being measured, if the taper detection section 52 can slide smoothly and the taper detection stop section 51 cannot slide smoothly, it indicates that the inner tapered hole is of standard size; if the taper detection section 52 cannot slide smoothly, or if both the taper detection section 52 and the taper detection stop section 51 can slide smoothly, it indicates that the size of the inner tapered hole does not meet the standard. The design of the stop plate 5 simplifies the process of judging the taper detection results. Compared with the measurement and calculation in traditional detection methods, the operator only needs to observe whether the stop plate 5 can slide smoothly to quickly determine whether the size of the inner tapered hole is qualified.

[0089] Example 4:

[0090] Furthermore, it also includes a pass-stop plate 5;

[0091] The stop plate 5 includes a taper detection stop section 51, a taper detection through section 52, and a taper detection guide section 55, which are horizontally connected from left to right, and a taper detection chute 53 that runs through the middle of the taper detection stop section 51, the middle of the taper detection through section 52, and the middle of the taper detection guide section 55.

[0092] The stop plate 5 is slidably arranged between the upper end surface of the base 1 and the lower end surface of the lower section 32 of the taper movable detection block. The lower end surface of the stop plate 5 is a plane. The upper end surface height of the taper detection stop section 51 is higher than the upper end surface height of the taper detection through section 52. The upper end surface height of the taper detection through section 52 is higher than the upper end surface height of the taper detection guide section 55. A first slope 541 is provided at the connection between the upper end surface of the taper detection stop section 51 and the upper end surface of the taper detection through section 52. A second slope 542 is provided at the connection between the upper end surface of the taper detection through section 52 and the upper end surface of the taper detection guide section 55. The taper detection slide groove 53 is slidably arranged on the outside of the lower section 22 of the taper detection shaft.

[0093] During the taper detection process, the stop plate 5 slides along the taper detection groove 53 on the outer side of the taper detection shaft lower section 22. The taper detection guide section 55 guides the stop plate 5 more accurately into the detection position, preventing deviation during sliding, thereby improving detection accuracy. When the taper detection section 52 of the stop plate 5 is properly positioned, the conformity of the inner tapered hole can be determined by observing the interference between the first and second detection edges 211, 311, and the inner tapered hole of the workpiece 6, as well as the sliding state of the stop plate 5.

[0094] Example 5:

[0095] Furthermore, it also includes a pass-stop plate 5;

[0096] The through-stop plate 5 includes a gauge line detection stop section 56 and a gauge line detection through section 57 connected horizontally, and a gauge line detection chute 58 running through the middle of the gauge line detection stop section 56 and the middle of the gauge line detection through section 57;

[0097] The vertical distance from the third detection edge 421 to the plane where the lower end surface of the gauge line detection axis middle section 42 is located is smaller than the vertical distance from the standard gauge line of the workpiece 6 to the plane where the standard lower end surface of the workpiece 6 is located;

[0098] The pass-stop plate 5 is slidably set between the upper end surface of the base 1 and the lower end surface of the middle section 42 of the gauge wire inspection shaft. The lower end surface of the pass-stop plate 5 is a plane. The upper end surface height of the gauge wire detection stop section 56 is higher than the upper end surface height of the gauge wire detection through section 57. A third slope 543 is provided at the junction of the upper end surface of the gauge wire detection stop section 56 and the upper end surface of the gauge wire detection through section 57. The gauge wire detection slide groove 58 is slidably set on the outside of the lower section 43 of the gauge wire inspection shaft.

[0099] During specific implementation, in product design and production, the distance from the conical gauge line to the wide-mouth plane of the workpiece 6 to be measured can be specified. During gauge line detection, the workpiece 6 to be measured is placed on the gauge line detection shaft 4 so that the third detection edge 421 contacts the tapered hole inside the workpiece 6 to be measured. Since "the vertical distance from the third detection edge 421 to the plane where the lower end face of the middle section 42 of the gauge line detection shaft is located is less than the vertical distance from the standard gauge line of the workpiece 6 to the plane where the standard lower end face of the workpiece 6 to be measured is located", when the actual gauge line position of the workpiece 6 to be measured is close to the standard gauge line of the workpiece 6 to be measured, the gauge line detection section 57 of the stop plate 5 should be able to slide smoothly; if the actual gauge line position of the workpiece 6 to be measured is incorrect, the stop plate 5 will be blocked during the sliding process. Specifically, if the gauge line detection through section 57 slides smoothly and the gauge line detection stop section 56 does not slide smoothly, it indicates that the gauge line position meets the standard. If the gauge line detection through section 57 does not slide smoothly, or if both the gauge line detection through section 57 and the gauge line detection stop section 56 slide smoothly, it indicates that the gauge line position does not meet the standard. By observing the sliding state of the pass-stop plate 5, it is possible to determine whether the actual gauge line position of the measured workpiece 6 is qualified. The special pass-stop plate 5 designed for gauge line position detection provides a simple and intuitive judgment method for gauge line detection.

[0100] Example 6:

[0101] Furthermore, it also includes a pass-stop plate 5;

[0102] The stop plate 5 includes a gauge line detection stop section 56, a gauge line detection through section 57, and a gauge line detection guide section 59, which are horizontally connected in sequence from right to left, and a gauge line detection chute 58 that passes through the middle of the gauge line detection stop section 56, the middle of the gauge line detection through section 57, and the gauge line detection guide section 59.

[0103] The vertical distance from the third detection edge 421 to the plane where the lower end surface of the gauge line detection axis middle section 42 is located is smaller than the vertical distance from the standard gauge line of the workpiece 6 to the plane where the standard lower end surface of the workpiece 6 is located;

[0104] The pass-stop plate 5 is slidably arranged between the upper end surface of the base 1 and the lower end surface of the middle section 42 of the gauge wire inspection shaft. The lower end surface of the pass-stop plate 5 is a plane. The upper end surface height of the gauge wire detection stop section 56 is higher than the upper end surface height of the gauge wire detection through section 57. The upper end surface height of the gauge wire detection through section 57 is higher than the upper end surface height of the gauge wire detection guide section 59. A third slope 543 is provided at the connection between the upper end surface of the gauge wire detection stop section 56 and the upper end surface of the gauge wire detection through section 57. A fourth slope 544 is provided at the connection between the upper end surface of the gauge wire detection through section 57 and the upper end surface of the gauge wire detection guide section 59. The gauge wire detection slide groove 58 is slidably arranged on the outside of the lower section 43 of the gauge wire inspection shaft.

[0105] During implementation, the stop plate 5 slides along the gauge line detection groove 58 on the outer side of the gauge line detection shaft lower section 43. The gauge line detection guide section 59 guides the stop plate 5 to the detection position accurately, preventing deviation. When the third detection edge 421 contacts the inner tapered hole of the workpiece 6, the gauge line position can be determined by observing whether the gauge line detection section 57 of the stop plate 5 can slide smoothly. The addition of the guide section to the existing gauge line detection stop plate 5 structure further optimizes the gauge line detection process.

[0106] Example 7:

[0107] Furthermore, it also includes a pass-stop plate 5;

[0108] The pass-stop plate 5 includes a taper detection through section 52, a taper detection stop section 51, a gauge line detection stop section 56, and a gauge line detection through section 57, which are horizontally connected in sequence from right to left; a taper detection chute 53 that passes through the middle of the taper detection stop section 51 and the middle of the taper detection through section 52; and a gauge line detection chute 58 that passes through the middle of the gauge line detection stop section 56 and the middle of the gauge line detection through section 57.

[0109] The right part of the stop plate 5 is slidably arranged between the upper end surface of the base 1 and the lower end surface of the lower section 32 of the taper movable detection block. The lower end surface of the right part of the stop plate 5 is a plane. The upper end surface height of the taper detection stop section 51 is higher than the upper end surface height of the taper detection through section 52. A first slope 541 is provided at the junction of the upper end surface of the taper detection stop section 51 and the upper end surface of the taper detection through section 52. The taper detection chute 53 is slidably arranged on the outer side of the taper detection shaft lower section 22.

[0110] The vertical distance from the third detection edge 421 to the plane where the lower end surface of the gauge line detection axis middle section 42 is located is smaller than the vertical distance from the standard gauge line of the workpiece 6 to the plane where the standard lower end surface of the workpiece 6 is located;

[0111] The left part of the pass-stop plate 5 is slidably set between the upper end surface of the base 1 and the lower end surface of the middle section 42 of the gauge wire inspection shaft. The lower end surface of the left part of the pass-stop plate 5 is a plane. The upper end surface height of the gauge wire detection stop section 56 is higher than the upper end surface height of the gauge wire detection through section 57. A third slope 543 is provided at the junction of the upper end surface of the gauge wire detection stop section 56 and the upper end surface of the gauge wire detection through section 57. The gauge wire detection slide groove 58 is slidably set on the outside of the lower section 43 of the gauge wire inspection shaft.

[0112] In practice, the above design uses a portion of the stop plate 5 to detect the gauge line position and dimensions, while the other portion of the stop plate 5 is used to detect the taper. For example, the workpiece 6 to be tested can be placed on the taper inspection shaft 2 for taper testing. The taper compliance can be determined by observing the sliding movement of the taper detection through section 52 and the taper detection stop section 51 on the right side of the stop plate 5. The workpiece 6 to be tested can then be placed on the gauge line inspection shaft 4. The gauge line position compliance can be determined by observing the sliding movement of the gauge line detection through section 57 and the gauge line detection stop section 56 on the left side of the stop plate 5.

[0113] By using the inspection fixture provided by the present invention, placing the workpiece on the inspection fixture and moving the stop plate 5 left and right, the taper of the workpiece with an inner tapered hole and the position of the gauge line can be quickly inspected.

[0114] It should be noted that while the stop plate 5 facilitates detection, it is not an indispensable technical feature. Based on the detection principle and implementation of the present invention, even without the stop plate 5, other measuring tools such as a vernier caliper or feeler gauge can still be used to detect the taper of the inner taper hole and the position of the gauge line.

[0115] Example 8:

[0116] Furthermore, at least two base bosses 11 of the same horizontal height are provided on the top of the base 1, at least one base groove 12 is provided between the two base bosses 11, and the stop plate 5 is slidably provided above the at least two base bosses 11 and the at least one base groove 12.

[0117] In practice, the base boss 11 provides a stable sliding support surface for the stop plate 5. The design of the base groove 12 reduces the contact area between the stop plate 5 and the base 1, lowering friction and making the stop plate 5 slide more smoothly. During the inspection process, the stop plate 5 slides on the base boss 11, and the air in the base groove 12 reduces the resistance of the stop plate 5 during the sliding process. This design ensures the smooth sliding of the stop plate 5 during the inspection process, improving the accuracy of the inspection.

[0118] Example 9:

[0119] Furthermore, the taper inspection shaft 2 and / or the gauge wire inspection shaft 4 are detachably connected to the base 1 .

[0120] In practice, from a maintenance perspective, if the taper gauge shaft 2 or the gauge wire gauge shaft 4 becomes worn or damaged due to long-term use, the detachable connection design eliminates the need to replace the entire fixture; only the damaged shaft needs to be removed and replaced, significantly reducing maintenance costs. From a versatility perspective, different production tasks may involve multiple specifications of workpieces 6, requiring gauge shafts with varying dimensions. The detachable connection allows for quick replacement of the appropriate gauge shaft, allowing the same fixture to meet diverse testing needs and enhance its usability.

[0121] The removable connection can be a screw connection, a plug-in connection or a magnetic connection.

[0122] Threaded connection: For example, the lower section of the taper inspection shaft 2 and / or the gauge wire inspection shaft 4 is set as an external thread, and screwed into the internal thread hole set in the base 1.

[0123] Plug-in connection: For example, positioning pins are placed on the lower section of the taper test shaft 2 and / or the gauge wire test shaft 4. The base 1 includes positioning holes that match the positioning pins and a mounting hole that accommodates the gauge wire test shaft 4. During installation, the gauge wire test shaft 4 is aligned with the hole in the base 1 and inserted. The positioning pins ensure that the test shaft is accurately installed. During removal, the gauge wire test shaft 4 is directly pulled out. To increase the connection security, an elastic retaining ring can be placed on the inner wall of the mounting hole. When the gauge wire test shaft 4 is inserted, the retaining ring locks the lower section of the test shaft, preventing it from loosening.

[0124] Magnetic connection: For example, a permanent magnet is installed at the bottom of the gauge wire inspection shaft 4, and a magnetic metal block or electromagnet is installed at the corresponding position of the base 1. The permanent magnet and the magnetic metal block attract each other, connecting the gauge wire inspection shaft 4 to the base 1. If an electromagnet is used, the gauge wire inspection shaft 4 is magnetically attracted when power is applied and can be removed when power is removed.

[0125] Example 10:

[0126] Furthermore, the base 1 is provided with a stepped hole 13, and the bottom of the taper inspection shaft 2 and the bottom of the gauge wire inspection shaft 4 are both provided with threaded holes. The taper inspection shaft 2 and the gauge wire inspection shaft 4 are connected to the stepped hole 13 through bolts and threaded holes, and the bolt head of the bolt does not protrude outside the stepped hole 13.

[0127] In practice, a bolt is passed through the internal threaded hole at the bottom of the taper test shaft 2 or the gauge wire test shaft 4 and screwed into the stepped hole 13 of the base 1 to securely connect the test shaft to the base 1. Because the bolt head does not protrude from the stepped hole 13, the lower end surface of the base 1 remains flat, making it more stable and reliable when placing the test fixture.

[0128] In summary, the utility model can be used for internal tapered hole angle detection, and has the technical advantages of low cost, reliable accuracy, efficient detection, and diverse functions.

[0129] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A rapid detection fixture for an inner tapered hole, comprising a base (1), characterized in that: It also includes a taper inspection shaft (2) and a taper movable inspection block (3); The taper axis detection device (2) comprises a vertically connected taper axis detection upper section (21) and a taper axis detection lower section (22); The bottom of the tapered shaft detection lower section (22) is connected to the top of the base (1); the tapered shaft detection upper section (21) and the tapered shaft detection lower section (22) are both cylindrical; the outer diameter of the tapered shaft detection upper section (21) is larger than the outer diameter of the tapered shaft detection lower section (22); and the upper edge of the tapered shaft detection upper section (21) is a first detection edge (211); The taper movable check block (3) comprises a taper movable check block upper section (31) and a taper movable check block lower section (32) vertically connected, and a taper movable check block hole (33) passing through the taper movable check block upper section (31) and the taper movable check block lower section (32); The upper section (31) of the taper movable inspection block is cylindrical, the outer diameter of the upper section (31) of the taper movable inspection block is larger than the outer diameter of the upper section (21) of the taper inspection shaft, the inner diameter of the taper movable inspection block hole (33) is smaller than the outer diameter of the upper section (21) of the taper inspection shaft, the taper movable inspection block (3) is slidably sleeved on the outer side of the lower section (22) of the taper inspection shaft through the taper movable inspection block hole (33), and the upper edge of the upper section (31) of the taper movable inspection block is a second detection edge (311).

2. The rapid detection fixture for inner tapered holes according to claim 1, characterized in that: Also included is a gauge wire inspection axis (4); The gauge wire inspection axis (4) comprises an upper gauge wire inspection axis section (41), a middle gauge wire inspection axis section (42) and a lower gauge wire inspection axis section (43) which are vertically connected in sequence from top to bottom; The bottom of the lower section (43) of the gauge wire inspection shaft is connected to the top of the base (1); the upper section (41) of the gauge wire inspection shaft is a truncated cone; the taper of the upper section (41) of the gauge wire inspection shaft is greater than the standard taper of the workpiece to be measured; the middle section (42) of the gauge wire inspection shaft is a cylindrical shape; the lower edge of the upper section (41) of the gauge wire inspection shaft coincides with the upper edge of the middle section (42) of the gauge wire inspection shaft; the coincident edge is a third inspection edge (421); the diameter of the third inspection edge (421) is equal to the diameter of the standard gauge wire of the workpiece to be measured.

3. The rapid detection fixture for inner tapered holes according to claim 1, characterized in that: Also includes a through-stop plate (5); The stop plate (5) comprises a horizontally connected taper detection stop section (51) and a taper detection through section (52), and a taper detection chute (53) running through the middle of the taper detection stop section (51) and the middle of the taper detection through section (52); The stop plate (5) is slidably arranged between the upper end surface of the base (1) and the lower end surface of the lower section (32) of the taper movable detection block. The lower end surface of the stop plate (5) is a plane. The upper end surface height of the taper detection stop section (51) is higher than the upper end surface height of the taper detection through section (52). A first slope (541) is provided at the junction of the upper end surface of the taper detection stop section (51) and the upper end surface of the taper detection through section (52). The taper detection chute (53) is slidably arranged on the outer side of the taper detection shaft lower section (22).

4. The rapid detection fixture for inner tapered holes according to claim 1, characterized in that: Also includes a through-stop plate (5); The stop plate (5) comprises a taper detection stop section (51), a taper detection through section (52) and a taper detection guide section (55) which are horizontally connected in sequence from left to right, and a taper detection chute (53) which passes through the middle of the taper detection stop section (51), the middle of the taper detection through section (52) and the middle of the taper detection guide section (55); The stop plate (5) is slidably arranged between the upper end surface of the base (1) and the lower end surface of the lower section (32) of the taper movable detection block. The lower end surface of the stop plate (5) is a plane. The upper end surface height of the taper detection stop section (51) is higher than the upper end surface height of the taper detection through section (52). The upper end surface height of the taper detection through section (52) is higher than the upper end surface height of the taper detection guide section (55). A first slope (541) is provided at the connection between the upper end surface of the taper detection stop section (51) and the upper end surface of the taper detection through section (52). A second slope (542) is provided at the connection between the upper end surface of the taper detection through section (52) and the upper end surface of the taper detection guide section (55). The taper detection chute (53) is slidably arranged on the outer side of the taper detection shaft lower section (22).

5. The rapid detection fixture for inner tapered holes according to claim 2, characterized in that: Also includes a through-stop plate (5); The stop plate (5) comprises a gauge line detection stop section (56) and a gauge line detection through section (57) connected horizontally, and a gauge line detection chute (58) running through the middle of the gauge line detection stop section (56) and the middle of the gauge line detection through section (57); The vertical distance from the third detection edge (421) to the plane where the lower end surface of the middle section (42) of the gauge line detection axis is located is smaller than the vertical distance from the standard gauge line of the workpiece being measured to the plane where the standard lower end surface of the workpiece being measured is located; The stop plate (5) is slidably arranged between the upper end surface of the base (1) and the lower end surface of the middle section (42) of the gauge wire detection shaft. The lower end surface of the stop plate (5) is a plane. The upper end surface of the gauge wire detection stop section (56) is higher than the upper end surface of the gauge wire detection through section (57). A third slope (543) is provided at the junction of the upper end surface of the gauge wire detection stop section (56) and the upper end surface of the gauge wire detection through section (57). The gauge wire detection chute (58) is slidably arranged on the outer side of the lower section (43) of the gauge wire detection shaft.

6. The rapid detection fixture for inner tapered holes according to claim 2, characterized in that: Also includes a through-stop plate (5); The stop plate (5) comprises a gauge line detection stop section (56), a gauge line detection through section (57) and a gauge line detection guide section (59) which are horizontally connected in sequence from right to left, and a gauge line detection chute (58) which passes through the middle of the gauge line detection stop section (56), the middle of the gauge line detection through section (57) and the gauge line detection guide section (59); The vertical distance from the third detection edge (421) to the plane where the lower end surface of the middle section (42) of the gauge line detection axis is located is smaller than the vertical distance from the standard gauge line of the workpiece being measured to the plane where the standard lower end surface of the workpiece being measured is located; The stop plate (5) is slidably arranged between the upper end surface of the base (1) and the lower end surface of the gauge wire detection shaft middle section (42); the lower end surface of the stop plate (5) is a plane; the upper end surface height of the gauge wire detection stop section (56) is higher than the upper end surface height of the gauge wire detection through section (57); the upper end surface height of the gauge wire detection through section (57) is higher than the upper end surface height of the gauge wire detection guide section (59); a third slope (543) is provided at the junction of the upper end surface of the gauge wire detection stop section (56) and the upper end surface of the gauge wire detection through section (57); a fourth slope (544) is provided at the junction of the upper end surface of the gauge wire detection through section (57) and the upper end surface of the gauge wire detection guide section (59); and the gauge wire detection slide groove (58) is slidably arranged on the outer side of the gauge wire detection shaft lower section (43).

7. The rapid detection fixture for inner tapered holes according to claim 2, characterized in that: Also includes a through-stop plate (5); The pass-stop plate (5) comprises a taper detection through section (52), a taper detection stop section (51), a gauge line detection stop section (56) and a gauge line detection through section (57) which are horizontally connected in sequence from right to left, a taper detection chute (53) which passes through the middle of the taper detection stop section (51) and the middle of the taper detection through section (52), and a gauge line detection chute (58) which passes through the middle of the gauge line detection stop section (56) and the middle of the gauge line detection through section (57); The right part of the stop plate (5) is slidably arranged between the upper end surface of the base (1) and the lower end surface of the lower section (32) of the taper movable detection block. The lower end surface of the right part of the stop plate (5) is a plane. The upper end surface height of the taper detection stop section (51) is higher than the upper end surface height of the taper detection through section (52). A first slope (541) is provided at the junction of the upper end surface of the taper detection stop section (51) and the upper end surface of the taper detection through section (52). The taper detection chute (53) is slidably arranged on the outer side of the taper detection shaft lower section (22). The vertical distance from the third detection edge (421) to the plane where the lower end surface of the middle section (42) of the gauge line detection axis is located is smaller than the vertical distance from the standard gauge line of the workpiece being measured to the plane where the standard lower end surface of the workpiece being measured is located; The left portion of the stop plate (5) is slidably arranged between the upper end surface of the base (1) and the lower end surface of the middle section (42) of the gauge wire detection shaft. The lower end surface of the left portion of the stop plate (5) is a plane. The upper end surface height of the gauge wire detection stop section (56) is higher than the upper end surface height of the gauge wire detection through section (57). A third slope (543) is provided at the junction of the upper end surface of the gauge wire detection stop section (56) and the upper end surface of the gauge wire detection through section (57). The gauge wire detection chute (58) is slidably arranged on the outer side of the lower section (43) of the gauge wire detection shaft.

8. The rapid detection fixture for inner tapered holes according to any one of claims 3 to 7, characterized in that: At least two base bosses (11) of the same horizontal height are provided on the top of the base (1), at least one base groove (12) is provided between the two base bosses (11), and the stop plate (5) is slidably arranged above the at least two base bosses (11) and the at least one base groove (12).

9. The rapid detection fixture for inner tapered holes according to claim 2, characterized in that: The taper inspection shaft (2) and / or the gauge wire inspection shaft (4) are detachably connected to the base (1).

10. The rapid detection fixture for inner tapered holes according to claim 9, characterized in that: The base (1) is provided with a stepped hole (13), the bottom of the taper inspection shaft (2) and the bottom of the gauge wire inspection shaft (4) are both provided with threaded holes, the taper inspection shaft (2) and the gauge wire inspection shaft (4) are connected to the stepped hole (13) via bolts and the threaded holes, and the bolt heads of the bolts do not protrude outside the stepped hole (13).

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