Chamfer measuring device

Abstract

The utility model discloses a chamfer measuring device which comprises a measuring meter, a handle and a measuring head assembly, the handle is provided with a mounting cavity, a measuring rod of the measuring meter is located in the mounting cavity, the measuring head assembly comprises a gauge body and a measuring head, the gauge body is provided with a vertical section and a horizontal section, the vertical section is provided with a guide cavity, the horizontal section is provided with a measuring cavity, and the measuring head comprises a mounting part, a guide part and a measuring part. The mounting part is located in the mounting cavity and connected with a measuring rod of the measuring meter, the guide part is located in the guide cavity, the measuring part is located in the measuring cavity, and the lower end of the measuring part extends out of the measuring cavity through the open end of the measuring cavity and can abut against the upper edge of a chamfer to be measured. During use, the end face of the open end of the measuring cavity abuts against the end face of a measured hole, the handle is pressed downwards, the spring is extruded, the spring pushes the guide part to move downwards, the guide part drives the mounting part and the measuring part to move until the counter-acting force applied to the measuring part by the upper edge of the chamfer of the measured hole is equal to the elastic force of the spring, and the reading of the measuring meter is stable. The measurement is completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chamfer measurement, in particular to a chamfer measurement device. BACKGROUND

[0002] By chamfering the edges of engine parts, stress concentration can be effectively reduced, the risk of cracking and breaking can be reduced, and the reliability and service life of the parts can be improved. Chamfer measurement helps to ensure that the size and shape of the chamfer meet the requirements, ensuring the quality and performance of the parts, thereby improving the reliability and stability of the engine.

[0003] Therefore, how to provide a suitable chamfer measurement device plays an important role in engine manufacturing. CONTENT OF THE INVENTION

[0004] The present application provides a chamfer measurement device to measure the chamfer of the measured hole of the workpiece to be measured.

[0005] In order to achieve the above-mentioned purpose, the present application provides a chamfer measurement device, comprising a measurement table, a handle and a probe assembly,

[0006] The handle has a mounting cavity, the first end of the handle is provided with the measurement table, and the measurement rod of the measurement table is located in the mounting cavity;

[0007] The probe assembly comprises a gauge body and a probe, the gauge body is located at the second end of the handle, and the second end of the gauge body can extend into the measured hole of the workpiece to be measured,

[0008] The gauge body is T-shaped, has a vertical section coaxial with the handle and a horizontal section connected with the vertical section, the vertical section is provided with a guide cavity, the guide cavity is in communication with the mounting cavity, the horizontal section is provided with a measurement cavity, and one end of the measurement cavity away from the guide cavity is an open end,

[0009] The probe is installed in the gauge body and comprises a mounting portion, a guide portion and a measurement portion connected in sequence, the mounting portion is located in the mounting cavity and connected with the measurement rod, the guide portion is located in the guide cavity, the guide cavity is used for guiding the movement of the guide portion, a spring is sleeved on the mounting portion, the guide portion is connected with the handle through the spring, the measurement portion is located in the measurement cavity, the lower end of the measurement portion extends out of the measurement cavity through the open end, the outer periphery of the lower end of the measurement portion has a measurement chamfer, and the chamfer surface of the measurement chamfer has a scale for indicating the diameter.

[0010] Preferably, in the above-mentioned chamfer measurement device, the mounting portion is a jack, the first end of the jack is connected with the measurement rod, the second end of the jack is connected with the measurement portion, and the measurement portion is a measurement block matched with the shape of the measurement cavity.

[0011] The guide part is provided with a first through hole, the mounting part is arranged in the first through hole, the guide part comprises a guide sleeve and a connecting block, the guide sleeve is arranged in the guide cavity, the connecting block is arranged in the measuring cavity, the connecting block is connected with the measuring part, and one end of the guide sleeve away from the connecting block is connected with the spring.

[0012] Preferably, in the chamfer measuring device, the top rod is threadedly connected with the measuring part.

[0013] Preferably, in the chamfer measuring device, the measuring part is provided with a counterweight.

[0014] Preferably, in the chamfer measuring device, the counterweight is connected with the measuring head by a screw;

[0015] Alternatively, the counterweight is adhesively, weldingly, clippingly or magnetically connected with the measuring head.

[0016] Preferably, in the chamfer measuring device, a lower end of the handle is provided with a T-shaped block, the T-shaped block is provided with a second through hole for the mounting part to pass through,

[0017] the T-shaped block comprises a mounting block and a connecting plate, the mounting block is connected with the handle, the connecting plate is provided with a sliding rod on a side close to the gauge body, the gauge body is provided with a sliding hole matched with the sliding rod, and the connecting plate is connected with the spring.

[0018] Preferably, in the chamfer measuring device, the handle is provided with a mounting groove for accommodating the mounting block, the mounting block is interference-fitted or threadedly connected with the mounting groove,

[0019] the connecting plate is located outside the mounting groove, and the connecting plate is integrally formed with the sliding rod or is connected with the sliding rod by a bolt, a plug-in connection, welding or adhesion.

[0020] Preferably, in the chamfer measuring device, a side wall of the measuring cavity is provided with a guide groove, and the measuring head is provided with a guide block matched with the guide groove.

[0021] Preferably, in the chamfer measuring device, a part of the gauge body corresponding to the measuring cavity is in a strip shape, and the gauge body comprises a horizontal plate and a side plate, two side edges of the horizontal plate in a length direction are in an arc shape, the side plate is an arc-shaped plate with the same shape as the side edges, and the guide groove is arranged on the arc-shaped plate.

[0022] The measuring part of the measuring head is a strip-shaped block, two ends of the measuring part in a length direction are in an arc shape matched with the shape of the side plate, and the guide block is arranged at the two ends of the measuring part in the length direction.

[0023] Preferably, in the above-mentioned chamfering measuring device, the mounting part is connected to the measuring rod by a clamp.

[0024] The chamfering measuring device provided in this application includes a measuring gauge, a handle, and a probe assembly. The handle has a mounting cavity, and the measuring rod of the measuring gauge is located in the mounting cavity. The probe assembly includes a gauge body and a probe. The gauge body is T-shaped and has a vertical section and a horizontal section. The vertical section has a guide cavity that communicates with the mounting cavity. The horizontal section has a measuring cavity, and the end of the measuring cavity away from the guide cavity is an open end. The probe includes a mounting part, a guide part, and a measuring part connected in sequence. The mounting part is located in the mounting cavity and is connected to the measuring rod of the measuring gauge. The guide part is located in the guide cavity, and the measuring part is located in the measuring cavity. The lower end of the measuring part extends out of the measuring cavity through the open end of the measuring cavity and can abut against the upper edge of the chamfer to be measured on the workpiece. When using the device, calibrate it. Place the chamfering measuring device on the workpiece to be measured, with the open end face of the measuring cavity abutting against the end face of the hole to be measured. Press down the handle, which compresses the spring. The spring pushes the guide part downward, and the guide part drives the mounting part and the measuring part downward simultaneously until the measuring part abuts against the upper edge of the chamfer of the hole to be measured. Continue pressing down the handle until the upper edge of the chamfer of the hole to be measured also applies a reaction force to the measuring part, which is equal to the spring force. At this point, the spring cannot be compressed further, the reading of the measuring instrument stabilizes, and the measurement is complete. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort, and this application can be applied to other similar scenarios based on the provided drawings. Unless obvious from the linguistic context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0026] Figure 1 This is a schematic diagram of the chamfering measuring device disclosed in this application;

[0027] Figure 2 This is a top view of the chamfering measuring device disclosed in this application;

[0028] Figure 3 yes Figure 2 Sectional view along the middle AA;

[0029] Figure 4 This is a partial structural schematic diagram of the chamfering measuring device disclosed in this application.

[0030] The attached diagram is described below:

[0031] 1-Measuring gauge; 2-Handle; 3-Probe assembly; 31-Gazette body; 311-Vertical section; 312-Horizontal section; 3121-Guide groove; 32-Probe; 321-Mounting part; 322-Guide part; 3221-Guide sleeve; 3222-Connecting block; 323-Measuring part; 3231-Guide block; 324-Counterweight block; 4-T-block; 41-Mounting block; 42-Connecting plate; 5-Spring. Detailed Implementation

[0032] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. The described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without inventive effort are within the scope of protection of the present application.

[0033] It should be noted that, for ease of description, only the parts relevant to the application are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in these embodiments can be arbitrarily combined, provided that the combined technical features are not contradictory. All feasible combinations of features are the technical content explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features.

[0034] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0035] In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more.

[0036] Please see Figure 1 and Figure 2Some embodiments of the present application disclose a chamfer measuring device, comprising a measuring table 1, a handle 2 and a measuring head assembly 3.

[0037] The worker holds the handle 2 to operate the chamfer measuring device, Figure 1 For the embodiment that the handle 2 is cylindrical, the shape of the handle 2 is not limited to cylindrical, but can also be cuboid or other shapes, in order to facilitate the worker to hold and increase the friction between the handle 2 and the hand, an anti-skid structure such as an anti-skid groove, an anti-skid protrusion or an anti-skid sleeve can be arranged on the handle 2.

[0038] The handle 2 has a mounting cavity, and the measuring rod of the measuring table 1 is located in the mounting cavity, as shown in Figure 1 and Figure 3 , the measuring table 1 is located at the first end of the handle 2;

[0039] The measuring head assembly 3 comprises a gauge body 31 and a measuring head 32, the gauge body 31 is located at the second end of the handle 2 (it should be noted that the first end and the second end of the handle 2 are the two ends of the handle 2 in the length direction, and the first end and the second end are opposite), the gauge body 31 also has a first end and a second end along the length direction of the handle 2, the first end of the gauge body 31 is closer to the handle 2 than the second end of the gauge body 31,

[0040] As shown in Figure 3 , the gauge body 31 is T-shaped, having a vertical segment 311 coaxial with the handle 2 and a horizontal segment 312 connected with the vertical segment 311, the plane where the horizontal segment 312 is located is perpendicular to the axis of the handle 2, the vertical segment 311 is located at the first end of the gauge body 31, and the horizontal segment 312 is located at the second end of the gauge body 31, the vertical segment 311 is provided with a guide cavity, the guide cavity is in communication with the mounting cavity, the horizontal segment 312 is provided with a measuring cavity, the end of the measuring cavity away from the guide cavity is an open end, the measuring cavity is in communication with the guide cavity, and the guide cavity and the measuring cavity form a T-shaped cavity.

[0041] The measuring head 32 is installed in the gauge body 31, the measuring head 32 comprises a mounting portion 321, a guide portion 322 and a measuring portion 323 connected in sequence, the mounting portion 321 is located in the mounting cavity and connected with the measuring rod of the measuring table 1, the guide portion 322 is located in the guide cavity, the guide cavity guides the movement of the guide portion 322, and the measuring portion 323 is located in the measuring cavity, the lower end of the measuring portion 323 extends out of the measuring cavity through the open end of the measuring cavity and can abut against the upper edge of the chamfer to be measured of the workpiece to be measured. The outer periphery of the lower end of the measuring portion 323 has a measuring chamfer, and the chamfer surface of the measuring chamfer has a scale for indicating the diameter, specifically, the scale represents the diameter of the circular arc where the measuring portion 323 is located at the corresponding position.

[0042] In some embodiments, the measuring rod of the measuring table 1 is connected with the mounting portion 321 through a clamp.

[0043] The spring 5 is sleeved on the mounting portion 321, and the guide portion 322 is connected with the handle 2 through the spring 5. The measuring head 32 is in a T shape as a whole, the cavity of the gauge body 31 is also in a T shape, the measuring head 32 is arranged in the cavity of the gauge body 31 from the open end of the gauge body 31, after the guide portion 322 is connected with the handle 2 through the spring 5, the measuring portion 323 on the side close to the closed end of the measuring cavity abuts against the closed end of the measuring cavity, and an upward force is applied to the gauge body 31, so that the gauge body 31 is positioned. The gauge body 31 and the measuring head 32 are not fixedly connected, but can move independently. In the scheme, the gauge body 31 is in a T shape, on the one hand, the guide cavity and the mounting cavity are facilitated to be arranged, and on the other hand, the shape of the gauge body 31 is designed according to the size of the guide cavity and the mounting cavity, so that the size of the gauge body 31 can be reduced, and the cost of the gauge body 31 can be reduced.

[0044] When assembled, the measuring table 1 is mounted at the first end of the handle 2;

[0045] The measuring head 32 is mounted on the gauge body 31, the mounting portion 321 of the measuring head 32 is connected with the measuring rod of the measuring table 1, and the guide portion 322 of the handle 2 and the measuring head 32 is connected through the spring 5.

[0046] For example, the upper edge diameter of the chamfer to be measured of the measured workpiece is 174.2 (+0.1 / 0), 174.2 (+0.1 / 0) indicates that 174.2 is the reference diameter of the chamfer, +0.1 indicates the maximum allowable deviation, that is, the diameter can be 0.1 larger than 174.2, and 0 indicates that negative error is not allowed, that is, the diameter cannot be less than 174.2.

[0047] The measurement process is as follows:

[0048] First, the chamfer measuring device is calibrated, and the upper edge diameter of the chamfer to be measured of the measured workpiece is taken as 174.2 (+0.1 / 0) for example, specifically, the scale corresponding to 174.2 of the measuring portion 323 is flush with the end face of the open end of the measuring cavity, and the measuring table 1 is adjusted to the 0° position;

[0049] The chamfer measuring device is placed on the measured workpiece, the horizontal section 312 of the gauge body 31 is located in the measured hole of the measured workpiece, the end face of the open end of the measuring cavity abuts against the end face of the measured hole, the scale 174.2 of the measuring portion 323 abuts against and is flush with the end face of the measured hole, and the part of the measuring portion 323 below the scale 174.2 is located in the chamfer of the measured hole;

[0050] If the diameter of the upper edge of the chamfer of the measured hole is greater than 174.2, when the end face of the open end of the measuring cavity abuts against the end face of the measured hole, the measuring portion 323 does not abut against the upper edge of the chamfer of the measured hole at this time;

[0051] The handle 2 is pressed down, the spring 5 is pressed, the guide part 322 is pushed to move downward, the guide part 322 drives the installation part 321 and the measuring part 323 to move downward at the same time, the installation part 321 applies a pulling force to the measuring rod of the measuring table 1, the pointer of the measuring table is deflected, and the guide part 322 drives the measuring part 323 to move downward to abut against the upper edge of the chamfer of the measured hole. Figure 4 As shown, the handle 2 is continuously pressed down, the spring 5 is pressed, the measuring part 323 further abuts against the upper edge of the chamfer of the measured hole, at this time, the upper edge of the chamfer of the measured hole also applies a reaction force to the measuring part 323, when the reaction force and the elastic force of the spring 5 reach equal, the spring 5 cannot be further pressed, the spring 5 cannot further push the guide part 322 to drive the installation part 321 and the measuring part 323 to move downward, the reading of the measuring table 1 is stable, at this time, the measurement is completed, the measuring table 1 displays the movement displacement of the measuring rod driven by the installation part 321, the measurement software converts the displacement into the diameter of the upper edge of the measured hole, and judges whether the diameter of the upper edge is qualified.

[0052] If the diameter of the upper edge of the measured hole is unqualified, it can be indirectly judged whether the chamfer machined by the tool is qualified, and the size of the chamfer machined by the tool can also be calculated.

[0053] After the measurement is completed, the handle 2 and the measuring head 32 are restored to the initial position under the action of the elastic force of the spring 5, so as to facilitate the next measurement.

[0054] Optionally, the installation part 321, the guide part 322 and the measuring part 323 of the measuring head 32 are coaxially arranged, and the installation part 321, the guide part 322 and the measuring part 323 are integrally formed as the measuring head 32.

[0055] In some embodiments, the installation part 321, the guide part 322 and the measuring part 323 of the measuring head 32 are a split structure, Figure 3 For the embodiment that the measuring head 32 is a split structure, the installation part 321 is sleeved with the guide part 322, the guide part 322 is T-shaped, and the measuring part 323 is located below the guide part 322. Specifically, the installation part 321 is a top rod, a first through hole is provided in the guide part 322, the installation part 321 (or the top rod) is arranged in the first through hole, a first end of the top rod extends out of the first through hole and is connected with the measuring rod, a second end of the top rod extends out of the first through hole and is connected with the measuring part 323. It should be noted that the length direction of the top rod is consistent with the length direction of the handle 2, the first end and the second end of the top rod are two ends of the length direction of the top rod, and the first end and the second end are opposite to each other.

[0056] The guide part 322 includes a guide sleeve 3221 and a connecting block 3222. The guide sleeve 3221 is located in the guide cavity, and the connecting block 3222 is located in the measuring cavity. The connecting block 3222 is connected to the measuring part 323. The end of the guide sleeve 3221 away from the connecting block 3222 is connected to the spring 5.

[0057] When connecting the gauge body 31 to the probe 32, the probe 32 is assembled first, and then the probe 32 is connected to the gauge body 31. Specifically, the push rod is first inserted into the first through hole of the guide part 322, and then the second end of the push rod is connected to the measuring part 323. Then, the whole assembly consisting of the push rod, the guide part 322, and the measuring part 323 is inserted into the gauge body 31 from the open end of the measuring cavity. The measuring part 323 is located in the measuring cavity of the gauge body 31, the guide sleeve 3221 of the guide part 322 is located in the guide cavity, and the first end of the push rod is located outside the gauge body 31 for connection with the probe rod.

[0058] Optionally, the shape of the measuring part 323 is adapted to the shape of the measuring cavity, and the measuring cavity can guide the movement of the measuring part 323. Figure 3 As can be seen, the size of the measuring part 323 is larger than the size of the connecting block 3222 of the guide part 322, so as to avoid the connecting block 3222 affecting the movement of the measuring part 323. The measuring part 323 has a plate-like structure.

[0059] In some embodiments, the push rod and the measuring part 323 are connected by threads. Specifically, the second end of the push rod is provided with an external thread, and the measuring part 323 is provided with a threaded hole that mates with the external thread. The push rod and the measuring part 323 are connected by the external thread and the threaded hole; or, as... Figure 3 As shown, a screw is provided on the measuring part 323, and the push rod has a threaded hole that mates with the screw. The measuring part 323 is connected to the push rod through the threaded hole that mates with the screw.

[0060] The connection method between the push rod and the measuring part 323 is not limited to threaded connection, but can also be other connection methods, such as bonding, interference fit, snap-fit ​​or welding. The specific connection method adopted shall be designed by those skilled in the art according to actual needs, and no specific limitation is made here.

[0061] In some embodiments, in order to prevent the measuring part 323 from deflecting during the measurement process and causing measurement error, this solution provides a counterweight 324 on the side of the measuring part 323 away from the guide part 322. The counterweight 324 can increase the weight of the measuring part 323 and improve the stability of the movement of the measuring part 323.

[0062] Figure 3The profile view of the chamfer measuring device, the shape of the counterweight 324 can be designed according to actual needs, the shape, size, thickness and material of the counterweight 324 and so on have multiple choices. In some embodiments, the shape of the counterweight 324 can be the same as the shape of the measuring part 323, but the size of the counterweight 324 is smaller than the size of the measuring part 323. It should be noted here that the counterweight 324 is coaxially arranged with the measuring part 323 to ensure that each position of the measuring part 323 is in a horizontal state. The thickness of the counterweight 324 cannot be greater than the depth of the hole to be measured, otherwise it will affect the normal work of the chamfer measuring device.

[0063] Figure 3 The counterweight 324 and the measuring part 323 are connected by bolts, and the connection mode of the counterweight 324 and the measuring part 323 is not limited to the above-mentioned embodiments, but also can be adhesive, welding, clamping or magnetic attraction and the like, which is not specifically limited here.

[0064] Figure 3 The counterweight 324 is arranged on the side of the measuring part 323 away from the guide part 322, and the counterweight 324 can also be arranged on the side of the measuring part 323 close to the guide part 322. The counterweight 324 can be a whole counterweight structure, or a split counterweight structure, and the specific arrangement is designed by those skilled in the art according to actual needs, which is not specifically limited here.

[0065] In some embodiments, the handle 2 has a T-shaped block 4, the T-shaped block 4 has a second through hole for the mounting part 321 to pass through, and the T-shaped block 4 includes a mounting block 41 and a connecting plate 42.

[0066] The mounting block 41 is connected with the handle 2, as shown in Figure 3 The handle 2 has a mounting groove near one end of the gauge body 31 for inserting the mounting block 41, the diameter of the mounting groove is greater than the diameter of the mounting cavity formed on the handle 2, and the mounting groove and the mounting cavity of the handle 2 form a T-shaped cavity structure; the connecting plate 42 is located outside the mounting groove, and the connecting plate 42 is in sliding fit with the gauge body 31, as shown in Figure 2 The connecting plate 42 is provided with a slide rod on the side close to the gauge body 31, and the gauge body 31 has a slide hole matched with the slide rod, the connecting plate 42 is in sliding fit with the gauge body 31 through the guide fit of the slide rod and the slide hole, and the connecting plate 42 is connected with the spring 5.

[0067] Optionally, a limiting structure for limiting the slide rod is arranged in the slide hole to prevent the slide rod from sliding out of the slide hole by mistake.

[0068] The installation block 41 is fixedly connected with the handle 2, so that the installation block 41 can move synchronously with the handle 2. Specifically, when the handle 2 is pressed downward, the handle 2 drives the T-shaped block 4 to move downward, the T-shaped block 4 slides downward relative to the gauge body 31 while extruding the spring 5, the spring 5 pushes the guide portion 322 to move downward, the guide portion 322 drives the installation portion 321 and the measuring portion 323 to move downward at the same time, until the measuring portion 323 abuts against the upper edge of the chamfer of the measured hole, and the handle 2 continues to be pressed downward, the handle 2 extrudes the spring 5, the measuring portion 323 further abuts against the upper edge of the chamfer of the measured hole, at this time, the upper edge of the chamfer of the measured hole also applies a reaction force to the measuring portion 323, when the reaction force and the elastic force of the spring 5 reach equal, the spring 5 cannot be further extruded, the spring 5 cannot further push the guide portion 322 to drive the installation portion 321 and the measuring portion 323 to move downward, and the reading of the measuring table 1 is stable, at this time, the measurement is completed.

[0069] Before the handle 2 drives the T-shaped block 4 to be pressed downward, there is a gap between the lower end surface of the connecting plate 42 and the end surface of the first end of the gauge body 31, which provides a movement space for the downward movement of the T-shaped block 4.

[0070] Figure 3 In the embodiment, the connecting plate 42 of the T-shaped block 4 is symmetrically provided with a slide rod, and the gauge body 31 is provided with a slide hole corresponding to the position of the slide rod.

[0071] The connecting manner of the slide rod and the connecting plate 42 can be one of integral molding, bolt connection, plug-in connection, welding connection or adhesive connection.

[0072] The installation block 41 and the connecting plate 42 are preferably integrally formed.

[0073] As shown in the drawings, Figure 3 The shape of the connecting plate 42 is the same as the shape of the part of the gauge body 31 provided with the guide cavity along the cross section perpendicular to the axis of the gauge body 31, so as to improve the overall aesthetics of the chamfer measuring device.

[0074] The side wall of the measuring cavity is provided with a guide groove 3121, the groove opening of the guide groove 3121 is in the same direction as the opening direction of the measuring cavity, the probe 32 has a guide block 3231 matched with the guide groove 3121, the guide groove 3121 and the guide block 3231 are guided and matched to guide the up-down movement of the probe 32, so as to improve the measurement accuracy of the chamfer measuring device.

[0075] As shown in the drawings, Figure 1As shown, the part of the gauge body 31 provided with the measuring cavity is in the shape of a long strip, the long strip has a horizontal plate and side plates, forming a U-shaped structure, the horizontal plate is a long strip plate, the two ends of the length direction of the horizontal plate are provided with side plates, the side edges of the two ends of the length direction of the horizontal plate are arc-shaped edges, the side plates are arc-shaped plates with the same shape as the arc-shaped edges, and the end of the arc-shaped plate away from the horizontal plate is provided with a guide groove 3121; correspondingly, the shape of the measuring part 323 of the measuring head 32 is the same as the shape of the part of the gauge body 31 provided with the measuring cavity, the measuring part 323 is a strip-shaped block, the two ends of the length direction of the measuring part 323 are arc-shaped and are adapted to the shape of the side plates, the arc-shaped position of the long strip-shaped measuring part 323 abuts against the upper edge of the hole to be measured, and the two ends of the length direction of the measuring part 323 are provided with guide blocks 3231.

[0076] When the chamfer measuring device disclosed in the scheme measures the chamfer of the workpiece to be measured, the two ends of the length direction of the measuring part 323 abut against the upper edge of the hole to be measured, the contact area of the measuring part 323 and the hole to be measured is reduced, the measuring part 323 can abut against the upper edge of the hole to be measured, in order to improve the measurement accuracy, the chamfer measuring device can be rotated to make the measuring part 323 abut against different positions of the upper edge of the hole to be measured, so as to measure different positions of the hole to be measured.

[0077] The part of the gauge body 31 provided with the measuring cavity can also be circular, or the part of the gauge body 31 provided with the measuring cavity has a plurality of L-shaped plates arranged in a radial manner, the horizontal plate of the L-shaped plate is connected with the part of the gauge body 31 provided with the guide cavity, the vertical plate of the L-shaped plate is an arc-shaped plate, the guide groove 3121 is arranged on the vertical plate, correspondingly, the measuring part 323 also has a plurality of horizontal plates arranged in a radial manner, or the part of the gauge body 31 provided with the measuring cavity is in the shape of a polygon, the measuring part 323 is also in the shape of a polygon, and the corners of the polygon abut against the upper edge of the hole to be measured.

[0078] The above description is merely preferred embodiments of the present application and a description of the principles of the technology applied, and is not intended to limit the present application. Those skilled in the art can make various changes and modifications to the present application. The scope of the application involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or equivalent features without departing from the above application concept. For example, the above features are replaced with the technical features disclosed in the present application (but not limited to) with similar functions to form a technical solution.

Claims

1. A chamfering measuring device, characterized in that, It includes a measuring instrument (1), a handle (2), and a probe assembly (3). The handle (2) has a mounting cavity, and the measuring instrument (1) is mounted on the first end of the handle (2), with the measuring rod of the measuring instrument (1) located in the mounting cavity; The probe assembly (3) includes a gauge body (31) and a probe (32). The gauge body (31) is located at the second end of the handle (2), and the second end of the gauge body (31) can extend into the hole to be measured in the workpiece. The gauge body (31) is T-shaped, having a vertical section (311) coaxial with the handle (2) and a horizontal section (312) connected to the vertical section (311). The vertical section (311) has a guide cavity that communicates with the mounting cavity. The horizontal section (312) has a measuring cavity, with the end of the measuring cavity away from the guide cavity being an open end. The probe (32) is installed inside the gauge body (31) and includes a mounting part (321), a guide part (322) and a measuring part (323) connected in sequence. The mounting part (321) is located in the mounting cavity and connected to the measuring rod. The guide part (322) is located in the guide cavity. The guide cavity is used to guide the movement of the guide part (322). A spring (5) is sleeved on the mounting part (321). The guide part (322) is connected to the handle (2) through the spring (5). The measuring part (323) is located in the measuring cavity. The lower end of the measuring part (323) extends out of the measuring cavity through the open end. The outer periphery of the lower end of the measuring part (323) has a measuring chamfer. The chamfered surface of the measuring chamfer has a scale for marking the diameter.

2. The chamfering measuring device according to claim 1, characterized in that, The mounting part (321) is a push rod, the first end of which is connected to the measuring rod, and the second end of which is connected to the measuring part (323). The measuring part (323) is a measuring block adapted to the shape of the measuring cavity. The guide part (322) is provided with a first through hole, and the mounting part (321) is provided in the first through hole. The guide part (322) includes a guide sleeve (3221) and a connecting block (3222). The guide sleeve (3221) is located in the guide cavity, and the connecting block (3222) is located in the measuring cavity. The connecting block (3222) is connected to the measuring part (323). The end of the guide sleeve (3221) away from the connecting block (3222) is connected to the spring (5).

3. The chamfering measuring device according to claim 2, characterized in that, The top rod is threadedly connected to the measuring part (323).

4. The chamfering measuring device according to claim 2, characterized in that, The measuring unit (323) has a counterweight (324).

5. The chamfering measuring device according to claim 4, characterized in that, The counterweight (324) is connected to the probe (32) by screws; Alternatively, the counterweight (324) may be bonded, welded, snapped, or magnetically connected to the probe (32).

6. The chamfering measuring device according to claim 1, characterized in that, The lower end of the handle (2) is provided with a T-shaped block (4) having a second through hole for the mounting part (321) to pass through. The T-block (4) includes a mounting block (41) and a connecting plate (42). The mounting block (41) is connected to the handle (2). The connecting plate (42) has a sliding rod on the side near the gauge body (31). The gauge body (31) has a sliding hole that cooperates with the sliding rod. The connecting plate (42) is connected to the spring (5).

7. The chamfering measuring device according to claim 6, characterized in that, The handle (2) has a mounting groove for receiving the mounting block (41), the mounting block (41) being either interference-fitted with or threaded into the mounting groove. The connecting plate (42) is located outside the mounting groove. The connecting plate (42) is integrally formed with the slide rod or is bolted, plugged in, welded or bonded.

8. The chamfering measuring device according to claim 1, characterized in that, The side wall of the measuring cavity is provided with a guide groove (3121), and the probe (32) has a guide block (3231) that cooperates with the guide groove (3121).

9. The chamfering measuring device according to claim 8, characterized in that, The part of the gauge body (31) corresponding to the measuring cavity is elongated and includes a horizontal plate and a side plate. The two sides of the horizontal plate in the length direction are arc-shaped, and the side plate is an arc-shaped plate with the same shape as the side plate. The guide groove (3121) is opened on the arc-shaped plate. The measuring part (323) of the probe (32) is a strip block. The two ends of the measuring part (323) in the length direction are arcs that are adapted to the shape of the side plate. The guide blocks (3231) are provided at the two ends of the measuring part (323) in the length direction.

10. The chamfering measuring device according to claim 1, characterized in that, The mounting part (321) is connected to the measuring rod by a clamp.

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