Accurate testing fixture for drilling depth of automobile dash panel

Abstract

The utility model discloses an automobile dash panel drilling depth accurate testing fixture in the technical field of industrial measurement testing fixtures, which comprises a connecting plate, an adjusting piece, a measuring scale and a holding rod, the adjusting piece is positioned on the inner side of the connecting plate, the measuring scale is positioned on the inner side of the adjusting piece, and the holding rod is positioned on the inner side of the adjusting piece. The holding rods are fixedly connected to the two sides of the outer side wall of the adjusting piece, sliding rails are fixedly connected to the four corners of the bottom of the connecting plate, sliding pieces are slidably connected to the connecting ends of the sliding rails, connecting rods are fixedly connected to the inner ends of the sliding pieces, and clamping pieces are fixedly connected to the tail ends of the connecting rods. A second connecting groove is formed in the periphery of the outer side wall of the adjusting piece, measuring scales are arranged on the upper side and the lower side of the outer side wall of the measuring scale, and an external thread is formed in the middle of the outer side wall of the measuring scale, and the accurate testing fixture for the drilling depth of the automobile dash panel is reasonable in structural design, more accurate in measuring result, high in applicability and convenient to adjust.

Description

Technical Field

[0001] This utility model relates to the field of industrial measurement and inspection tool technology, specifically a precision inspection tool for drilling depth of automotive front bulkhead panels. Background Technology

[0002] Inspecting the drilling depth of automotive front bulkheads is a crucial step in ensuring drilling quality during automobile manufacturing. Because drilled holes may have a certain degree of taper or unevenness, measurements should be performed under stable environmental conditions to guarantee accuracy, avoiding the influence of factors such as temperature, humidity, and vibration. For example, temperature changes can cause thermal expansion and contraction of the workpiece and measuring tools, thus affecting measurement accuracy. Existing front bulkheads have various drilled holes of different depths, and most current depth measuring tools use depth gauges on vernier calipers. However, these depth gauges require hand gripping, are prone to wobbling during use, and are difficult to read, resulting in inconvenience and insufficient measurement accuracy.

[0003] Chinese patent CN212674029U discloses a precision gauge for drilling depth in automotive front bulkhead panels, comprising a main plate, a rotating ball, a measuring ruler, and a lever block. A locking groove is provided in the center of the main plate, within which the rotating ball is movably engaged. This invention features a locking groove inside the main plate, with the rotating ball movably engaged within it. The rotating ball holds a freely movable measuring ruler, which has a measuring scale. This scale can be compared with a comparison scale on a comparison block for more accurate readings. The comparison block has a single-sided opening for easy reading of the measuring scale. The rotatable rotating ball can be adjusted for verticality within a certain range to ensure parallelism with the drilled hole. The suction blocks on both sides ensure stable placement of the device, avoiding shaking caused by manual placement. The device offers good performance and accurate measurement.

[0004] However, in the aforementioned patent, rotating the ball can only adjust the verticality of the measuring ruler, but it cannot guarantee that the fixing components on both sides are completely symmetrical, that is, it cannot guarantee that the measuring ruler is in the center of the hole to be measured. When the bottom of the inner cavity of the hole to be measured is curved, it will lead to inaccurate measurement results. At the same time, the shape of the front panel of the car is a combination of flat and curved surfaces. When measuring the hole on the curved surface, the fixing components on both sides are unstable and the heights on both sides are different, making it more troublesome to adjust the verticality of the measuring ruler. Utility Model Content

[0005] The purpose of this utility model is to provide a precision gauge for drilling depth of automotive front bulkhead panels, in order to solve the problems mentioned in the background art. When using the gauge, rotating the ball can only adjust the verticality of the measuring ruler, but it cannot guarantee that the fixing components on both sides are completely symmetrical, that is, it cannot guarantee that the measuring ruler is in the center of the hole to be measured. When the bottom of the inner cavity of the hole to be measured is curved, it will lead to inaccurate measurement results. At the same time, the shape of the automotive front bulkhead panel is a combination of flat and curved surfaces. When measuring holes on curved surfaces, the fixing components on both sides are unstable when fixed by suction cups, and the heights on both sides are different, making it difficult to adjust the verticality of the measuring ruler.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a precision gauge for drilling depth of automotive front bulkhead panels, comprising a connecting plate, an adjusting component, a measuring ruler, and a holding rod. The adjusting component is located inside the connecting plate, and the measuring ruler is located inside the adjusting component. The holding rod is fixedly connected to both sides of the outer side wall of the adjusting component. Slide rails are fixedly connected to the four bottom corners of the connecting plate. Sliding components are slidably connected to the connecting ends of the slide rails. A connecting rod is fixedly connected to the inner end of the sliding component. A locking component is fixedly connected to the end of the connecting rod. A second connecting groove is formed around the outer side wall of the adjusting component. Measuring scales are provided on the upper and lower sides of the outer side wall of the measuring ruler, and an external thread is formed in the middle of the outer side wall of the measuring ruler.

[0007] As a further description of the above technical solution:

[0008] A sliding rod is fixedly connected to the top center of the connecting rod, and the end of the sliding rod is slidably connected to the inner cavity of the limiting groove.

[0009] As a further description of the above technical solution:

[0010] The inner sidewall of the connecting plate has a first connecting groove, and the bottom of the adjusting member has a limit groove. A metal ball is rolled between the inner cavities of the first connecting groove and the second connecting groove, and the metal ball is made of stainless steel.

[0011] As a further description of the above technical solution:

[0012] The adjusting component has a fixing groove at the bottom center, and a threaded groove at the top center of the inner cavity of the fixing groove. The measuring ruler is threadedly connected to the inner cavity of the threaded groove.

[0013] As a further description of the above technical solution:

[0014] A comparison piece is fitted onto the upper side of the outer wall of the measuring ruler, and a connection hole is opened on the outer wall of the comparison piece.

[0015] As a further description of the above technical solution:

[0016] The inner cavity of the connecting hole is threaded with a first connecting screw, and the top of the grip rod is threaded with a second connecting screw.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This precision gauge for drilling depth in automotive front bulkheads features a sliding rail and a sliding component mounted on a connecting plate. The sliding component is connected to a locking component via a connecting rod. A rotatable adjusting component is located within the connecting plate, and a limiting groove on the adjusting component connects to the sliding rod. When the adjusting component rotates clockwise or counterclockwise, the locking component moves inward or outward simultaneously, securing itself to the inner wall of the hole to be measured. The adjusting component is then fixed with a second connecting screw, ensuring the measuring gauge remains centered within the hole, resulting in more accurate measurements. Furthermore, this method directly engages the inner wall of the hole, eliminating the need for additional fixing components on either side, making it highly versatile and easy to adjust. Attached Figure Description

[0019] Figure 1 This is a bottom view of the structure of a precision drilling depth gauge for automotive front bulkheads proposed in this utility model.

[0020] Figure 2 This is a schematic diagram of the main sectional view of a precision gauge for drilling depth in the front bulkhead of an automobile, as proposed in this utility model.

[0021] Figure 3 This utility model proposes a precision gauge for drilling depth in automotive front bulkhead panels. Figure 1 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This utility model proposes a precision gauge for drilling depth in automotive front bulkhead panels. Figure 2 Enlarged structural diagram at point B.

[0023] In the diagram: 100, connecting plate; 110, slide rail; 120, sliding component; 130, connecting rod; 140, sliding rod; 150, clamp; 160, first connecting groove; 200, adjusting component; 210, second connecting groove; 220, limiting groove; 230, metal ball; 240, fixing groove; 241, threaded groove; 300, measuring rod; 310, measuring scale; 320, external thread; 330, comparison component; 340, connecting hole; 350, first connecting screw; 400, gripping rod; 410, second connecting screw. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] This utility model provides a precision gauge for drilling depth in automotive front bulkhead panels, offering more accurate measurement results, wider applicability, and convenient adjustment. Please refer to [link / reference]. Figure 1-4 It includes a connecting plate 100, an adjusting component 200, a measuring ruler 300, and a holding rod 400;

[0028] Please refer to it again. Figure 1 and Figure 3 The bottom four corners of the connecting plate 100 are fixedly connected to slide rails 110. The connecting end of the slide rail 110 is slidably connected to a slide member 120. The inner end of the slide member 120 is fixedly connected to a connecting rod 130. The end of the connecting rod 130 is fixedly connected to a clamp 150. The connecting plate 100 is used to connect and fix the slide rail 110. The slide rail 110 is used to connect the connecting rod 130 and the clamp 150 and slide on the slide rail 110. The clamp 150 is used to support and position the inner diameter of the hole to be measured.

[0029] Please refer to it again. Figure 3 The adjusting member 200 has a second connecting groove 210 around its outer side wall. The adjusting member 200 is located inside the connecting plate 100. The adjusting member 200 is used to connect the measuring ruler 300. The second connecting groove 210 is used to limit the movement of the metal ball 230.

[0030] Please refer to it again. Figure 2 and Figure 4 The measuring ruler 300 has measuring scales 310 on the upper and lower sides of its outer side wall, and an external thread 320 is opened in the middle of its outer side wall. The measuring ruler 300 is located inside the adjusting member 200 and is used to measure the depth of the drill hole.

[0031] Please refer to it again. Figure 2 The grip rod 400 is fixedly connected to both sides of the outer wall of the adjusting member 200, and the grip rod 400 is used to grip and rotate the adjusting member 200.

[0032] Please refer to it again. Figure 2 A slide rod 140 is fixedly connected to the top center of the connecting rod 130, and the end of the slide rod 140 is slidably connected to the inner cavity of the limiting groove 220. The adjustment of the clamp 150 is realized by connecting the slide rod 140 with the limiting groove 220.

[0033] Please refer to it again. Figure 3 The inner sidewall of the connecting plate 100 is provided with a first connecting groove 160, and the bottom of the adjusting member 200 is provided with a limit groove 220. A metal ball 230 is rolled between the inner cavities of the first connecting groove 160 and the second connecting groove 210. The metal ball 230 is made of stainless steel. The metal ball 230 is connected by the first connecting groove 160 and the second connecting groove 210 to achieve stable rotation between the connecting plate 100 and the adjusting member 200.

[0034] Please refer to it again. Figure 1-2 The bottom center of the adjusting component 200 has a fixing groove 240, and the top center of the inner cavity of the fixing groove 240 has a threaded groove 241. The measuring ruler 300 is threadedly connected to the inner cavity of the threaded groove 241. The measuring ruler 300 is stably and vertically limited by setting the threaded groove 241.

[0035] Please refer to it again. Figure 2 A comparison piece 330 is fitted onto the upper side of the outer wall of the measuring ruler 300. The outer wall of the comparison piece 330 has a connection hole 340. The measuring scale 310 on the measuring ruler 300 is quickly read through the comparison piece 330.

[0036] Please refer to it again. Figure 2The inner cavity of the connecting hole 340 is threaded with a first connecting screw 350, and the top of the grip rod 400 is threaded with a second connecting screw 410. The first connecting screw 350 is used to fix the comparison piece 330 and the measuring ruler 300, and the second connecting screw 410 is used to fix the adjusted piece 200 and the connecting plate 100.

[0037] In summary, this precision drilling depth gauge for automotive front bulkheads utilizes a connecting plate 100 with a slide rail 110 and a sliding component 120. The sliding component 120 is connected to a clamping component 150 via a connecting rod 130. A rotatable adjusting component 200 is located within the connecting plate 100, and a limiting groove 220 connects to a sliding rod 140. When the adjusting component 200 rotates clockwise or counterclockwise, the clamping component 150 moves inward or outward simultaneously, securing the inner wall of the hole to be inspected. The adjusting component 200 is then fixed by a second connecting screw 410, ensuring that the measuring ruler 300 is always centered within the hole. This results in more accurate measurements. Furthermore, this method directly clamps the inside of the hole to be inspected, eliminating the need for fixing components on both sides, making it highly adaptable and easy to adjust.

[0038] In practical use, those skilled in the art insert the clip 150 and the measuring scale 300 into the drill hole, hold the handle 400 and rotate it counterclockwise. The clip 150 moves outward in sync until it is completely in contact with the inner wall of the drill hole. Tighten the second connecting screw 410, slide the comparison piece 330 to fit with the measuring scale 300, tighten the first connecting screw 350, and read the corresponding data between the comparison piece 330 and the measuring scale 310.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A precision gauge for drilling depth in automotive front bulkhead panels, characterized in that: The device includes a connecting plate (100), an adjusting component (200), a measuring ruler (300), and a holding rod (400). The adjusting component (200) is located inside the connecting plate (100), and the measuring ruler (300) is located inside the adjusting component (200). The holding rod (400) is fixedly connected to both sides of the outer wall of the adjusting component (200). The bottom four corners of the connecting plate (100) are fixedly connected to slide rails (110). The connecting end of the slide rail (110) is slidably connected to a slide member (120). The inner end of the slide member (120) is fixedly connected to a connecting rod (130). The end of the connecting rod (130) is fixedly connected to a clamp (150). The outer wall of the adjusting component (200) has a second connecting groove (210) around its perimeter. The outer wall of the measuring ruler (300) has measuring scales (310) on its upper and lower sides. The outer wall of the measuring ruler (300) has an external thread (320) in the middle.

2. The precision gauge for drilling depth of automotive front bulkhead panels according to claim 1, characterized in that: A slide rod (140) is fixedly connected to the top middle of the connecting rod (130), and the end of the slide rod (140) is slidably connected to the inner cavity of the limiting groove (220).

3. The precision gauge for drilling depth of automotive front bulkhead panels according to claim 1, characterized in that: The inner sidewall of the connecting plate (100) is provided with a first connecting groove (160), and the bottom of the adjusting member (200) is provided with a limiting groove (220). A metal ball (230) is rolled between the inner cavities of the first connecting groove (160) and the second connecting groove (210), and the metal ball (230) is made of stainless steel.

4. The precision gauge for drilling depth of automotive front bulkhead panels according to claim 1, characterized in that: The adjusting component (200) has a fixed groove (240) at the bottom center, and a threaded groove (241) is opened at the top center of the inner cavity of the fixed groove (240). The measuring ruler (300) is threadedly connected to the inner cavity of the threaded groove (241).

5. A precision gauge for drilling depth in an automotive front bulkhead according to claim 1, characterized in that: A comparison piece (330) is fitted onto the upper side of the outer wall of the measuring ruler (300), and a connection hole (340) is opened on the outer wall of the comparison piece (330).

6. The precision gauge for drilling depth of an automotive front bulkhead according to claim 5, characterized in that: The inner cavity of the connecting hole (340) is threaded with a first connecting screw (350), and the top of the grip rod (400) is threaded with a second connecting screw (410).

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