Measuring tool and measuring device
By designing a measuring fixture with a positioning sleeve and a sample bar hole, the measuring sample bar can be placed directly for cross-bar distance measurement, which solves the problems of low efficiency and insufficient accuracy in traditional methods and achieves efficient and accurate cross-bar distance measurement.
Patent Information
- Application Number
- CN202423139207.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-19
AI Technical Summary
The traditional method of measuring the span distance of external spline workpieces is inefficient and difficult to guarantee accuracy. It requires butter and is easily affected by human factors.
Design a measuring fixture comprising a positioning sleeve and symmetrically arranged sample bar holes. The measuring sample bar is directly placed in the sample bar holes, and the measuring part of the measuring component holds the sample bar to achieve cross-bar distance measurement.
It improves the efficiency and accuracy of cross-bar distance measurement, avoids manual counting of teeth and the use of grease, and ensures that the measurement bar is placed quickly and accurately.
Smart Images
Figure CN223460973U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to work piece detection technical field, especially a kind of measuring tool and measuring device. BACKGROUND
[0002] Traditional outer spline and the cross-bar distance measurement method of work piece usually needs to be measured part using measurement sample stick sticks butter, stick two measurement sample sticks on the tooth surface of spline two sides, then using outer diameter micrometer measures.This method has the defects of low efficiency and accuracy difficult to guarantee.Low efficiency: after each measurement needs to stick butter, otherwise measurement sample stick falls off from spline tooth surface;Accuracy difficult to guarantee: measurement sample stick needs to be placed on correct spline tooth number, is easily influenced by human factors, and measurement sample stick is placed in wrong tooth number to cause error measurement actual measurement size. UTILITY MODEL CONTENT
[0003] Therefore, the utility model discloses the main purpose is to provide a kind of measuring tool and measuring device that can efficiently and accurately measure cross-bar distance.
[0004] To achieve the above object, the utility model provides a kind of measuring tool, for with measuring piece cooperation measurement work piece's cross-bar distance, the measuring piece has two measurement parts of relative arrangement, the measuring tool includes:
[0005] Two measurement sample sticks;
[0006] Positioning sleeve, with through channel, the through channel is used to accommodate the work piece, the positioning sleeve is equipped with two sample bar holes of symmetrical arrangement, the opposite side of two sample bar holes is communicated with the through channel respectively, two sample bar holes are used to accommodate two measurement sample sticks respectively, the side wall of the positioning sleeve is equipped with two notches of symmetrical arrangement, two sample bar holes are correspondingly arranged with two notches, and each notch is communicated with the sample bar hole corresponding to itself, and two notches are used for two measurement parts of the measuring piece to extend into respectively.
[0007] Preferably, along the axis direction of the positioning sleeve, two notches are located in the middle of the positioning sleeve.
[0008] Preferably, the height of two notches is adapted to the height of the measurement part of the measuring piece or the height of two notches is 10mm.
[0009] Preferably, two sample bar holes are counterbores.
[0010] Preferably, the hole center distance between two sample bar holes is same with the theoretical cross-bar distance of the work piece.
[0011] Preferably, the size of sample bar hole is adapted to the size of measurement sample stick.
[0012] Preferably, the axis of the sample bar hole is parallel to the axis of the through passage, and the extending direction of the notch is perpendicular to the axis of the through passage.
[0013] Preferably, the workpiece is an external spline or a gear.
[0014] Preferably, the measuring sample bar is made of wear-resistant high-hard material, and the wear-resistant high-hard material includes high-carbon steel or alloy steel.
[0015] To achieve the above object, the utility model also provides a measuring device, its characterized in that, including measuring piece and above-mentioned measuring tool.
[0016] Preferably, the measuring piece is a micrometer, a spline ring gauge, a universal measuring instrument or a DIATEST external gear span bar distance measuring instrument.
[0017] The utility model technical scheme has the advantages that when the span bar distance of external spline and the like workpiece needs to be measured, the external spline and the like workpiece is placed into the through passage of the positioning sleeve, then two measuring sample bars are placed into two sample bar holes respectively, then two measuring portions of the measuring piece are respectively inserted into two notches, and one measuring portion abuts against one measuring sample bar, and the other measuring portion abuts against the other measuring sample bar, then two measuring sample bars are driven to approach each other by two measuring portions, so that two measuring sample bars abut against two tooth grooves of the external spline and the like workpiece respectively, and the distance between two measuring portions is the span bar distance to be measured. In the embodiment, two sample bar holes are directly arranged symmetrically, so that when the measuring sample bar is placed, two measuring sample bars can be directly placed in two sample bar holes respectively, without counting the teeth by hand and without sticking butter on the measuring sample bar, so that the measuring sample bar can be quickly and accurately placed on the correct number of external spline teeth, and the efficiency and accuracy of measuring the span bar distance are improved. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained from the device shown in the drawings without creative labor.
[0019] Figure 1 It is an embodiment of the measuring tool and the structure of the workpiece cooperation schematic view;
[0020] Figure 2 It is an embodiment of the measuring tool's plan view;
[0021] Wherein, 100, measuring tool; 110, positioning sleeve; 111, through channel; 112, sample rod hole; 113, notch; 120, measuring sample rod;
[0022] 200, workpiece.
[0023] The realization, functional features and advantages of the utility model will be further described in combination with embodiments with reference to the drawings. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0025] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly. In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, "and / or" in the full text includes three schemes, taking A and / or B as an example, including A technical solution, B technical solution, and A and B simultaneously meet the technical solution; in addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.
[0026] The present application relates to the cross rod distance measurement of workpieces such as external spline 200, two high-precision measuring sample rods 120 of certain diameter are selected during measurement, placed in two opposite tooth grooves of the workpiece 200 (placed in the two tooth grooves closest to each other if the number of teeth is odd), and the measuring sample rods 120 are tangent to the tooth surface at the division circle, then the distance between the highest points of the two measuring sample rods 120 is measured by using a micrometer and the like, and the reading value should correspond to the formula calculation value.
[0027] As Figure 1 and Figure 2As shown, a measuring tool 100 is used to measure the cross-bar distance of a workpiece 200 in cooperation with a measuring piece, the measuring piece has two measuring parts arranged oppositely, the measuring tool 100 comprises a positioning sleeve 110 and two measuring sample bars 120, the positioning sleeve 110 has a through channel 111 for accommodating the workpiece 200, the positioning sleeve 110 is provided with two sample bar holes 112 arranged symmetrically, the opposite sides of the two sample bar holes 112 are communicated with the through channel 111 respectively, the two sample bar holes 112 are used to accommodate the two measuring sample bars 120 respectively, the side wall of the positioning sleeve 110 is provided with two notches 113 arranged symmetrically, the two notches 113 are arranged correspondingly with the two sample bar holes 112, and each notch 113 is communicated with the corresponding sample bar hole 112, the two notches 113 are used for the two measuring parts of the measuring piece to extend into respectively, so that the two measuring parts abut against the two measuring sample bars 120 respectively, and the two measuring sample bars 120 abut against the two sides of the workpiece 200 in the through channel 111, then the reading on the measuring piece can be read out. In the embodiment, the workpiece 200 is an external spline, and it can be understood that in other embodiments, the workpiece 200 can also be a gear and other workpieces 200 with cross-bar distance parameters.
[0028] When it is necessary to measure the cross-bar distance of the external spline and other workpieces 200, the external spline and other workpieces 200 are placed in the through channel 111 of the positioning sleeve 110, then the two measuring sample bars 120 are placed in the two sample bar holes 112 respectively, then the two measuring parts of the measuring piece are extended into the two notches 113 respectively, and one measuring part abuts against one of the two measuring sample bars 120, and the other measuring part abuts against the other measuring sample bar 120, then the two measuring sample bars 120 are driven to approach each other by the two measuring parts, so that the two measuring sample bars 120 abut in the two opposite tooth grooves of the external spline and other workpieces 200 respectively, at this time, the distance between the two measuring parts is the cross-bar distance to be measured, such as L shown in Figure 2 In the embodiment, since the two sample bar holes 112 arranged symmetrically are directly provided, when the measuring sample bars 120 are placed, the two measuring sample bars 120 are directly placed in the two sample bar holes 112 respectively, without the need for counting the teeth by artificial counting, and without the need for sticking butter on the measuring sample bars 120, so that the measuring sample bars 120 can be quickly and accurately placed on the correct external spline tooth number, thereby improving the efficiency and accuracy of measuring the cross-bar distance.
[0029] In the embodiment, the positioning sleeve 110 is provided with two sample bar holes 112 which are symmetrically arranged. The two sample bar holes 112 are completely symmetrical or approximately symmetrical. When the number of teeth of the external spline workpiece 200 is even, the two sample bar holes 112 are completely symmetrical. When the number of teeth of the external spline workpiece 200 is odd, the two sample bar holes 112 are approximately symmetrical. That is, one sample bar hole 112 corresponds to one tooth groove of the external spline workpiece 200, and the other sample bar hole 112 corresponds to the two tooth grooves closest to the aforementioned tooth groove of the external spline workpiece 200.
[0030] With reference to Figure 1 and Figure 2 In the embodiment, the positioning sleeve 110 is approximately cylindrical. The inner diameter of the positioning sleeve 110 is adapted to the outer diameter of the external spline workpiece 200. In actual application, the inner diameter of the positioning sleeve 110 is slightly larger than the outer diameter of the external spline workpiece 200. The positioning sleeve 110 is made of light material. In the embodiment, the positioning sleeve 110 is made of aluminum. Aluminum has the advantages of light weight and low cost, so that the measurement personnel is more labor-saving and convenient when using, and the light weight of the measurement tool 100 is more convenient for transfer. It can be understood that in other embodiments, the positioning sleeve 110 can also be made of other light materials.
[0031] With reference to Figure 1 and Figure 2 In the embodiment, the measurement sample bar 120 is cylindrical, and the sample bar hole 112 is a circular hole. The hole diameter of the sample bar hole 112 is adapted to the diameter of the measurement sample bar 120 (i.e., the size of the sample bar hole 112 is adapted to the size of the measurement sample bar 120). In actual application, the hole diameter of the sample bar hole 112 is slightly larger than the diameter of the measurement sample bar 120. The measurement sample bar 120 is made of wear-resistant high-hard material, which includes high-carbon steel or alloy steel. Specifically, in the use process, the measurement sample bar 120 is easy to be worn, so that the use life of the measurement sample bar 120 can be improved by using wear-resistant high-hard material, and the accuracy and stability during measurement can be ensured. In the cross-bar distance measurement, the cylindricity requirement of the measurement sample bar 120 is very high. The diameter accuracy of the sample bar is usually within 0.001 mm to ensure the accuracy of the measurement result. In addition, since the measurement sample bar 120 of the present application is independent of the positioning sleeve 110, the new measurement sample bar 120 can be directly replaced when the measurement sample bar 120 is seriously worn.
[0032] In the embodiment, the measuring member is a micrometer, and the two measuring parts are a measuring rod and a measuring anvil respectively. The measuring rod abuts against one of the measuring bars 120, and the measuring anvil abuts against the other measuring bar 120. By adjusting the knob or the fine adjustment knob of the micrometer, the two measuring bars 120 are driven by the measuring rod and the measuring anvil to abut against the two tooth grooves of the opposite teeth of the external spline, so that the distance between the measuring rod and the measuring anvil is the across-bar distance of the external spline to be measured, which can be directly read from the micrometer. It can be understood that in other embodiments, the measuring member can also be a spline ring gauge, a universal measuring instrument, a DIATEST external tooth across-bar distance measuring instrument, or other tools capable of measuring the across-bar distance.
[0033] With reference to Figure 1 , along the axial direction of the positioning sleeve 110, the two notches 113 are located in the middle part of the positioning sleeve 110, so that when the across-bar distance of the workpiece 200 such as an external spline is measured, the two measuring parts of the measuring member can abut against the middle part of the two measuring bars 120 through the two notches 113, avoiding that a certain section of the measuring bar 120 is tilted, and further improving the accuracy of the measurement of the across-bar distance. Specifically, along the axial direction of the positioning sleeve 110, that is, the vertical direction when the positioning sleeve 110 is normally used (i.e., the vertical direction in Figure 1 ).
[0034] The height of the two notches 113 is 10 mm. Specifically, the height of the notch 113 can have a certain error. The size of the measuring part of the measuring member (such as the diameter of the measuring rod and the measuring anvil of the micrometer) is generally about 10 mm, so the height of the notch 113 is set to about 10 mm, which can ensure that the measuring rod and the measuring anvil of the micrometer are adapted to the notch 113, avoid that the notch 113 is too large to cause the measuring member to tilt when measuring the across-bar distance, and further improve the accuracy of the measurement.
[0035] In the embodiment, the height of the two notches 113 is adapted to the height of the measuring part of the measuring member, so that the notch 113 plays a limiting role on the measuring part to make the measuring part abut against the measuring bar 120 at an accurate angle, and further ensure the accuracy of the measurement.
[0036] With reference to Figure 1 , the two bar holes 112 are counterbores, so that after the measuring bars 120 are placed in the bar holes 112, the hole bottoms of the bar holes 112 play a bearing role on the measuring bars 120 to avoid that the measuring bars 120 fall out of the bar holes 112, and the bar holes 112 limit the measuring bars 120 in the vertical direction. In addition, the diameter of the bar hole 112 is adapted to the diameter of the measuring bar 120, which limits the measuring bar 120 in the horizontal direction, so that the measuring bar 120 does not need to be stuck with butter as in the prior art.
[0037] The hole center distance between the two sample bar holes 112 is the same as the theoretical cross-bar distance of the workpiece 200. Specifically, the theoretical cross-bar distance refers to the cross-bar distance that the workpiece 200 should theoretically have, and since the cross-bar distance of the workpiece 200 has errors in actual application, we need to measure whether the cross-bar distance of the workpiece 200 meets the use requirements.
[0038] Reference Figures 1-2 The axis of the sample bar hole 112 is parallel to the axis of the through channel 111, and the extension direction of the notch 113 is perpendicular to the axis of the through channel 111, so that the workpiece 200 and the sample bar 120 are placed, and the cross-bar distance of the measuring piece is measured.
[0039] The application also provides a measuring device comprising the measuring piece and the above-mentioned measuring tool 100.
[0040] Specifically, since the measuring device comprises the measuring piece and the above-mentioned measuring tool 100, when the cross-bar distance of the workpiece 200 such as the external spline needs to be measured, two measuring sample bars 120 are directly placed in the two sample bar holes 112, without the need for manual tooth counting, and without the need for sticking butter on the measuring sample bar 120, so that the measuring sample bar 120 can be quickly and accurately placed on the correct external spline tooth number, thereby improving the efficiency and accuracy of measuring the cross-bar distance.
[0041] In the embodiment, the measuring piece is a micrometer, and it can be understood that in other embodiments, the measuring piece can also be a spline ring gauge, a universal measuring instrument, a DIATEST external tooth cross-bar distance measuring instrument, and other tools capable of measuring the cross-bar distance. The measuring piece is a product that can be purchased on the market, and the specific structure of the measuring piece will not be described here. The error of the cross-bar distance of the external spline is generally 0.04mm-0.06mm, so the measuring accuracy is relatively high, and therefore the measuring piece of the application is a tool with high measuring accuracy such as a micrometer, and the micrometer is 0.01mm.
[0042] The above is only the preferred embodiment of the application, and does not limit the patent range of the application, and any equivalent device transformation or direct / indirect application in other related technical fields under the utility model concept of the application is included in the patent protection range of the application.
Claims
1. A measuring tool for measuring a cross-bar distance of a workpiece in cooperation with a measuring piece, the measuring piece having two measuring portions disposed opposite to each other, characterized in that, The measuring tool comprises: two measuring bars; a positioning sleeve having a through channel for accommodating the workpiece, the positioning sleeve being provided with two symmetrically arranged bar holes, opposite sides of the two bar holes being respectively communicated with the through channel, the two bar holes being respectively used for accommodating the two measuring bars, the side wall of the positioning sleeve being provided with two symmetrically arranged notches, the two notches being correspondingly arranged with the two bar holes, and each notch being communicated with the corresponding bar hole, the two notches being respectively used for allowing the two measuring parts of the measuring member to extend into.
2. The gauge of claim 1 wherein, In the axial direction of the positioning sleeve, the two notches are located in the middle part of the positioning sleeve.
3. The gauge of claim 1 wherein, The height of the two notches is adapted to the height of the measuring parts of the measuring member, or the height of the two notches is 10mm.
4. The gauge of claim 1 wherein, The two bar holes are both counterbores.
5. The gauge of claim 1 wherein, The center distance between the two bar holes is the same as the theoretical bar distance of the workpiece.
6. The gauge of claim 1 wherein, The size of the bar hole is adapted to the size of the measuring bar.
7. The gauge of claim 1 wherein, The axis of the bar hole is parallel to the axis of the through channel, and the extending direction of the notch is perpendicular to the axis of the through channel.
8. The gauge of claim 1 wherein, The workpiece is an external spline or a gear, and / or the measuring bar is made of wear-resistant high-hard material, which includes high-carbon steel or alloy steel.
9. A measuring device, characterized by The measuring member and the measuring tool of any one of claims 1-8 are comprised.
10. The measuring device of claim 9, wherein, The measuring member is a micrometer, a spline ring gauge, a universal measuring instrument or a DIATEST external tooth bar distance measuring instrument.