Reaming depth measuring device

Abstract

The utility model discloses a reaming depth measuring device, and belongs to the field of reaming depth measurement. Comprising a handle which is provided with a through hole; the measuring head is connected with an ejector rod, and the ejector rod extends into the through hole at one end of the handle; one end of the elastic piece abuts against the measuring head, the other end of the elastic piece abuts against the handle, and the elastic piece drives the measuring head to reciprocate along the through hole; a gauge rod of the depth gauge extends into the through hole at the other end of the handle, and the ejector rod is in contact with the gauge rod; and the standard component is provided with a reaming hole, and the measuring head can extend into the reaming hole. The utility model provides a reaming measuring device with high accuracy and repeatability.

Description

Technical Field

[0001] The utility model relates to the technical field of reaming depth measurement, in particular to a reaming depth measuring device. Background Art

[0002] Depth measurement plays a vital role in engine manufacturing. By accurately measuring the depth of engine parts, it is possible to ensure that the parts meet the design requirements during assembly and avoid assembly problems caused by depth deviation. The key to depth measurement is to ensure that the depth dimensions of each part of the part are accurately controllable to meet the design specifications and improve the quality and performance of the parts.

[0003] Therefore, a properly designed depth measuring instrument can quickly and accurately obtain depth information to ensure that each part meets the specifications, thereby providing important support for the reliability and stability of the engine to improve the controllability and quality assurance level of the entire manufacturing process. Utility Model Content

[0004] The main purpose of the utility model is to provide a reaming depth measuring device, aiming to quickly and accurately obtain reaming depth information.

[0005] In order to achieve the above-mentioned purpose, the reaming depth measuring device proposed by the utility model comprises:

[0006] A handle, wherein the handle is provided with a through hole;

[0007] A measuring head, the measuring head is connected to a push rod, and the push rod extends into the through hole at one end of the handle;

[0008] An elastic member, one end of which is in contact with the measuring head, and the other end of which is in contact with the handle, and the elastic member drives the measuring head to reciprocate along the through hole;

[0009] A depth gauge, wherein a rod of the depth gauge extends into the through hole at the other end of the handle, and the top rod contacts the rod;

[0010] The standard part is provided with a reaming hole, and the measuring head can extend into the reaming hole.

[0011] Optionally, in one embodiment of the utility model, the measuring head includes an insertion section and a calibration section, the diameter of the insertion section is smaller than the diameter of the reamed hole, the diameter of the calibration section is smaller than or equal to the diameter of the reamed hole, the insertion section is connected to the calibration section and is coaxially arranged with the calibration section, and the calibration section is connected to the push rod.

[0012] Optionally, in an embodiment of the present utility model, a first chamfer is provided at the periphery of the connection between the correction section and the insertion section, and a second chamfer is provided at the periphery of the end of the insertion section.

[0013] Optionally, in an embodiment of the utility model, an oil guide groove is provided on a side of the measuring head close to the push rod.

[0014] Optionally, in an embodiment of the present invention, a gripping groove is provided on the surface of the handle, and the gripping groove extends along the axial direction of the handle.

[0015] Optionally, in an embodiment of the present utility model, a first accommodating groove and a second accommodating groove are respectively formed at two ends of the handle;

[0016] The elastic member is sleeved on the push rod, one end of the elastic member abuts against the measuring head, and the other end abuts against the bottom wall of the first accommodating groove;

[0017] The watch rod passes through the second accommodating groove and extends into the through hole to contact the push rod.

[0018] Optionally, in an embodiment of the utility model, the top rod includes a first rod segment and a second rod segment, the diameter of the first rod segment is the same as the diameter of the through hole, the diameter of the second rod segment is smaller than the through hole, both ends of the second rod segment are connected to the first rod segment, and the length of the second rod segment is greater than the depth of the reaming hole;

[0019] A fastening hole is provided on the surface of the handle, the fastening hole is communicated with the through hole, and a fastener passes through the fastening hole and abuts against the second rod section to clamp the push rod.

[0020] Optionally, in an embodiment of the utility model, a groove is formed at one end of the measuring head away from the push rod.

[0021] Optionally, in an embodiment of the present utility model, the measuring head is further provided with a through groove, and the through groove passes through the side wall of the groove and is connected with the groove.

[0022] Optionally, in an embodiment of the present invention, the depth gauge is connected to the handle via a clamp.

[0023] Compared with the prior art, the utility model can at least achieve the following beneficial effects. When measuring, firstly, it is necessary to perform zeroing operation on the measuring device, select the corresponding standard part and measuring head, and the reaming hole opened by the standard part is the standard reaming hole. The measuring head is inserted into the reaming hole of the standard part and pressed until the measuring head and the bottom of the reaming hole of the standard part are tightly fitted. At this time, the push rod moves along the inner edge of the through hole, and the push rod drives the table rod to move so that the value of the depth gauge changes, and this state is set as the zero point of the depth gauge. After the zeroing work is completed, the measuring head is separated from the standard part, and the elastic part drives the measuring head to reset. After that, the accurate measurement of the reaming depth can be quickly completed. The measuring head is inserted into the reaming hole to be measured and the measuring head is tightly fitted with the bottom of the reaming hole to be measured. If the depth of the reaming hole to be measured is less than the depth of the standard reaming hole, the depth gauge displays a positive number. If the depth of the reaming hole to be measured is greater than the depth of the standard reaming hole, the depth gauge displays a negative number. The value displayed by the depth gauge and the depth of the standard reaming hole are combined to quickly determine the depth of the reaming hole to be measured or determine whether its depth meets the standard. It is understandable that there are multiple groups of measuring heads and standard parts with different sizes. According to different size requirements, different measuring heads and standard parts are assembled and used to meet the measurement requirements of different aperture sizes. This solution realizes the precise displacement of the push rod and fast and accurate measurement through the synergy of the push rod, the table rod and the elastic part. The device has high accuracy and repeatability, is suitable for precise measurement of hole depth, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of an embodiment of a reaming depth measuring device of the utility model;

[0026] Figure 2 This is a cross-sectional view of a reaming depth measuring device of the utility model;

[0027] Figure 3 is the top view of the measuring head;

[0028] Figure 4 is a schematic diagram of the structure of the ejector rod;

[0029] Figure 5 It is a schematic diagram of the structure of the watch clip.

[0030] Description of Figure Numbers:

[0031] 100, handle; 110, through hole; 120, fastening hole; 130, first accommodating groove; 140, second accommodating groove; 150, gripping groove; 200, measuring head; 210, insertion section; 220, calibration section; 231, first chamfer; 232, second chamfer; 240, oil guide groove; 250, groove; 260, through groove; 300, ejector rod; 310, first rod section; 320, second rod section; 400, elastic member; 500, depth gauge; 510, table clip; 520, table rod; 600, standard part; 610, reaming hole;

[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0037] Reference Figure 1~Figure 5 The utility model provides a reaming depth measuring device, comprising:

[0038] A handle 100, wherein the handle 100 is provided with a through hole 110;

[0039] A measuring head 200, the measuring head 200 is connected to a push rod 300, and the push rod 300 extends into the through hole 110 at one end of the handle 100;

[0040] An elastic member 400, one end of the elastic member 400 abuts against the measuring head 200, and the other end of the elastic member 400 abuts against the handle 100, and the elastic member 400 drives the measuring head 200 to reciprocate along the through hole 110;

[0041] A depth gauge 500, a rod 520 of the depth gauge 500 extends into the through hole 110 at the other end of the handle 100, and the top rod 300 contacts the rod 520;

[0042] The standard part 600 is provided with a reaming hole 610 , and the measuring head 200 can extend into the reaming hole 610 .

[0043] When measuring, the measuring device needs to be zeroed first, and the corresponding standard part 600 and measuring head 200 are selected. The reaming hole 610 provided in the standard part 600 is a standard reaming hole. The measuring head 200 is inserted into the reaming hole 610 of the standard part 600 and pressed until the measuring head 200 and the bottom of the reaming hole 610 of the standard part 600 are tightly fitted. At this time, the push rod 300 moves along the inner edge of the through hole 110, and the push rod 300 drives the table rod 520 to move, so that the value of the depth gauge 500 changes, and this state is set as the zero point of the depth gauge 500. The zeroing work is completed, and the measuring head 200 is separated from the standard part 600, and the elastic part 400 drives the measuring head 200 to reset. After that, the accurate measurement of the depth of the reaming hole 610 can be completed quickly. The measuring head 200 is inserted into the reaming hole to be measured and the measuring head 200 is tightly fitted with the bottom of the reaming hole to be measured. If the depth of the reaming hole to be measured is less than the depth of the standard reaming hole 610, the depth gauge 500 displays a positive number. If the depth of the reaming hole to be measured is greater than the depth of the standard reaming hole 610, the depth gauge 500 displays a negative number. The value displayed by the depth gauge 500 is combined with the depth of the standard reaming hole 610 to quickly confirm the depth of the reaming hole to be measured or determine whether its depth meets the standard. It is understandable that the measuring head 200 and the standard part 600 are provided with multiple groups of different sizes. According to different size requirements, different measuring heads 200 and standard parts 600 are assembled and used to meet the measurement requirements of different aperture sizes. This solution achieves precise displacement of the push rod 300 and fast and accurate measurement through the coordinated action of the push rod 300, the gauge rod 520 and the elastic member 400. The device has high accuracy and repeatability, is suitable for precise measurement of hole depth, and improves work efficiency.

[0044] The depth gauge 500 is connected to the handle 100 via a gauge clip 510 . Specifically, the depth gauge 500 can be a Malvern meter-wireless transmission digital display type.

[0045] The push rod 300 includes a first rod segment 310 and a second rod segment 320. The diameter of the first rod segment 310 is the same as the diameter of the through hole 110, and the diameter of the second rod segment 320 is smaller than the through hole 110. Both ends of the second rod segment 320 are connected to the first rod segment 310, and the length of the second rod segment 320 is greater than the depth of the reaming hole 610. A fastening hole 120 is opened on the surface of the handle 100, and the fastening hole 120 is connected to the through hole 110. The fastener passes through the fastening hole 120 and abuts against the second rod segment 320 to clamp the push rod 300. The fastener is used to abut against the push rod 300 to prevent the push rod 300 from slipping out of the handle 100.

[0046] In order to facilitate the replacement of measuring heads 200 and standard parts 600 of different sizes, a first accommodating groove 130 and a second accommodating groove 140 are respectively provided at both ends of the handle 100, and the elastic member 400 is sleeved on the top rod 300. One end of the elastic member 400 abuts against the measuring head 200, and the other end abuts against the bottom wall of the first accommodating groove 130. The dial rod 520 passes through the second accommodating groove 140 and extends into the through hole 110 to contact the top rod 300.

[0047] When replacing the measuring head 200, first remove the fastener so that the push rod 300 can be removed from the through hole 110. The accommodating groove is provided to facilitate the replacement of the measuring head 200, and the elastic member 400 can also be quickly replaced when it needs to be replaced. The elastic member 400 can be selected as a spring.

[0048] Further, the measuring head 200 includes an insertion section 210 and a calibration section 220. The diameter of the insertion section 210 is smaller than the diameter of the reaming hole 610. The diameter of the calibration section 220 is smaller than or equal to the diameter of the reaming hole 610. The insertion section 210 and the calibration section 220 are coaxially connected. The calibration section 220 is connected to the mandrel 300. The diameter of the insertion section 210 is smaller than the diameter of the reaming hole 610, so that it is easy to insert into the reaming hole to be measured. The diameter of the calibration section 220 is preferably the same as the diameter of the reaming hole 610. The calibration section 220 is used to calibrate the insertion position of the measuring head 200 when the measuring head 200 is inserted into the reaming hole 610, so that the measuring head 200 is inserted into the reaming hole 610 in a straight state and contacts the bottom of the reaming hole 610 to ensure the accuracy of the final measurement result. It can be understood that the diameter comparison referred to here is the diameter comparison between the measuring head 200 and the standard part 600 that match each other.

[0049] In order to facilitate the insertion section 210 and the calibration section 220 to be inserted quickly and accurately into the reamed hole 610 of the standard part 600 and the reamed hole to be tested, a first chamfer 231 is provided at the periphery of the connection between the calibration section 220 and the insertion section 210, and a second chamfer 232 is provided at the periphery of the end of the insertion section 210.

[0050] When the measuring device measures the reaming hole to be measured, it usually measures the reaming hole 610 at the processing site, or measures the reaming hole just processed on the machine tool. Since there are a lot of cutting fluids, oils and other liquids at the processing site, these liquids are likely to enter the measuring device and affect the measurement accuracy. To solve this problem, an oil guide groove 240 is provided on the measuring head 200 to guide the flow of the liquid to prevent it from causing an impact such as blocking the elastic member 400 and reducing the measurement accuracy.

[0051] In addition, there are also cutting fluids, oils and other liquids in the reaming hole to be measured. In order to eliminate the influence of these liquids on the measurement results, the measuring head 200 is provided with a groove 250 and a through groove 260 connected to the groove 250. When the measuring head 200 is fully inserted into the reaming hole to be measured, the groove 250 and the through groove 260 prevent the reaming hole 610 from forming a completely closed structure, and the oil flows in the space formed by the groove 250 and the through groove 260. During measurement, this part of the liquid will neither overflow from the reaming hole 610 due to squeezing to cause pollution, nor will it be located between the measuring head 200 and the bottom of the reaming hole 610 to affect the measurement accuracy.

[0052] It can be understood that the provision of the groove 250 can also reduce the mass of the measuring head 200 and prevent the deadweight of the measuring head 200 from affecting the measurement.

[0053] In order to facilitate measurement, a gripping groove 150 is provided on the surface of the handle 100 so that an operator can grip and use the measuring device.

[0054] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A reaming depth measuring device, characterized in that: include: A handle (100), wherein the handle (100) is provided with a through hole (110); A measuring head (200), the measuring head (200) being connected to a push rod (300), the push rod (300) extending into the through hole (110) at one end of the handle (100); an elastic member (400), one end of the elastic member (400) being in contact with the measuring head (200), and the other end of the elastic member (400) being in contact with the handle (100), and the elastic member (400) driving the measuring head (200) to reciprocate along the through hole (110); A depth gauge (500), wherein a gauge rod (520) of the depth gauge (500) extends into the through hole (110) at the other end of the handle (100), and the push rod (300) contacts the gauge rod (520); A standard part (600) is provided with a reaming hole (610), and the measuring head (200) can extend into the reaming hole (610).

2. The reaming depth measuring device according to claim 1, characterized in that: The measuring head (200) comprises an insertion section (210) and a calibration section (220); the diameter of the insertion section (210) is smaller than the diameter of the reaming hole (610); the diameter of the calibration section (220) is smaller than or equal to the diameter of the reaming hole (610); the insertion section (210) is connected to the calibration section (220) and is coaxially arranged with the calibration section (220); and the calibration section (220) is connected to the push rod (300).

3. The reaming depth measuring device according to claim 2, characterized in that: A first chamfer (231) is provided at the periphery of the connection between the correction section (220) and the insertion section (210), and a second chamfer (232) is provided at the periphery of the end of the insertion section (210).

4. The reaming depth measuring device according to claim 1, characterized in that: An oil guide groove (240) is provided on a side of the measuring head (200) close to the push rod (300).

5. The reaming depth measuring device according to claim 1, characterized in that: A gripping groove (150) is provided on the surface of the handle (100), and the gripping groove (150) extends along the axial direction of the handle (100).

6. The reaming depth measuring device according to claim 1, characterized in that: The handle (100) is provided with a first receiving groove (130) and a second receiving groove (140) at both ends thereof; The elastic member (400) is sleeved on the push rod (300), one end of the elastic member (400) abuts against the measuring head (200), and the other end abuts against the bottom wall of the first accommodating groove (130); The watch rod (520) passes through the second accommodating groove (140), extends into the through hole (110), and contacts the push rod (300).

7. The reaming depth measuring device according to claim 1, characterized in that: The push rod (300) comprises a first rod segment (310) and a second rod segment (320); the diameter of the first rod segment (310) is the same as the diameter of the through hole (110); the diameter of the second rod segment (320) is smaller than the through hole (110); two ends of the second rod segment (320) are connected to the first rod segment (310); and the length of the second rod segment (320) is greater than the depth of the reaming hole (610); A fastening hole (120) is provided on the surface of the handle (100), and the fastening hole (120) is communicated with the through hole (110); a fastener passes through the fastening hole (120) and abuts against the second rod section (320) to clamp the push rod (300).

8. The reaming depth measuring device according to claim 1, characterized in that: A groove (250) is formed at one end of the measuring head (200) away from the push rod (300).

9. The reaming depth measuring device according to claim 8, characterized in that: The measuring head (200) is further provided with a through groove (260), and the through groove (260) penetrates the side wall of the groove (250) and is in communication with the groove (250).

10. The reaming depth measuring device according to claim 1, characterized in that: The depth gauge (500) is connected to the handle (100) via a gauge clip (510).

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