Insert installation gap measuring device and method

Abstract

The invention relates to the technical field of gap measurement, in particular to an insert mounting gap measuring device and method. The device comprises a draw-in bolt and a measuring unit, the draw-in bolt comprises a bolt head and a screw, one side, relatively close to the screw, of the bolt head is provided with a first abutting plane, and one side, relatively far away from the screw, of the bolt head is provided with a second abutting plane; the side wall of the bolt head is provided with a measuring groove communicated with the first abutting plane and the second abutting plane. The tension bolt is used for abutting against the end face of the mounting hole through the first abutting plane and is connected with the insert embedded into the mounting hole through the screw so as to apply pre-tightening force towards the outer side of the mounting hole to the insert. Under the state that the insert applies pre-tightening force, a probe of the measuring unit penetrates through the measuring groove to abut against the end face of the mounting hole and the end face of the insert, the gap between the end face of the insert and the end face of the carbon fiber mounting hole is measured under the torsion tensioning state, the mounting working condition of the metal insert and the carbon fiber piece is simulated, and the insert gap after mounting is effectively measured.

Description

Technical Field

[0001] The present invention relates to the technical field of gap measurement, and in particular to an insert installation gap measurement device and method. Background Art

[0002] During the assembly process of the carbon fiber frame, after the metal insert is assembled onto the frame through a narrow space, it is necessary to measure the gap size between the end face of the insert and the end face of the mounting hole in the tensioned state. The space on the installation side of the insert is small and there is no press-fit space, making it difficult to tighten the insert and apply the specified torque, resulting in the gap size between the end face of the insert and the end face of the mounting hole being difficult to measure. Summary of the invention

[0003] The invention provides an insert installation gap measuring device and method, which are used to solve the problem in the prior art that it is difficult to tighten the insert and measure the gap size between the insert end face and the installation hole end face.

[0004] The present invention provides an insert installation gap measuring device, comprising:

[0005] A tension bolt comprises a bolt head and a screw rod, wherein a first abutting plane is provided on a side of the bolt head relatively close to the screw rod, and a second abutting plane is provided on a side of the bolt head relatively far from the screw rod; a measuring groove connecting the first abutting plane and the second abutting plane is provided on a side wall of the bolt head;

[0006] The tension bolt is configured to abut against the end surface of the mounting hole through the first abutment plane, and is connected to an insert embedded in the mounting hole through the screw rod to apply a pre-tightening force to the insert;

[0007] The measuring unit comprises a measuring instrument and a measuring needle, wherein the measuring needle is used to penetrate the measuring slot and respectively abut against the end face of the mounting hole and the end face of the insert, so as to measure the distance between the end face of the insert and the end face of the mounting hole.

[0008] According to an embodiment of the present invention, when the tension bolt is installed, the measuring groove is directly opposite to the end face of the mounting hole and the end face of the insert.

[0009] According to an embodiment of the present invention, the extending direction of the measuring groove is parallel to the axial direction of the screw rod.

[0010] According to an embodiment of the present invention, there are a plurality of measuring grooves, and the plurality of measuring grooves are evenly arranged along the peripheral wall of the bolt head.

[0011] According to an embodiment of the present invention, a hexagonal hole is provided at the center of the second abutting plane.

[0012] According to one embodiment of the present invention, the measuring instrument further comprises a base, and the measuring needle is connected to the base.

[0013] According to an embodiment of the present invention, the base has a measuring reference surface, the measuring needle is vertically connected to the measuring reference surface, and the measuring reference surface is used to abut against the second abutting plane.

[0014] According to an embodiment of the present invention, the measurement reference plane is magnetic and is used for adsorption with the second abutting plane.

[0015] The present invention also provides an insert installation gap measurement method, based on the insert installation gap measurement device as described above, comprising:

[0016] Applying a pre-tightening force to the insert toward the outside of the mounting hole by tightening the bolt;

[0017] Measuring a first distance by the measuring unit, wherein the first distance is a distance from the second abutting plane to an end surface of the insert;

[0018] Measuring a second distance by the measuring unit, where the second distance is the distance from the second abutting plane to the end surface of the mounting hole;

[0019] The distance between the insert end face and the mounting hole end face is obtained by the difference between the first distance and the second distance.

[0020] According to an embodiment of the present invention, the step of measuring the first distance by the measuring unit includes:

[0021] Abutting the measuring reference surface of the base against the second abutting plane, and obtaining a first length value of the measuring needle by abutting the measuring needle against the end surface of the insert;

[0022] The step of measuring the second distance by the measuring unit comprises:

[0023] The measuring reference surface of the table base is abutted against the second abutting plane, and the second length value of the measuring needle is obtained by abutting the measuring needle against the end surface of the mounting hole.

[0024] The insert installation gap measuring device provided by the present invention comprises a tension bolt and a measuring unit, wherein the tension bolt comprises a bolt head and a screw rod, wherein a first abutting plane is provided on a side of the bolt head relatively close to the screw rod, and a second abutting plane is provided on a side of the bolt head relatively far from the screw rod; a measuring groove connecting the first abutting plane and the second abutting plane is provided on the side wall of the bolt head; the tension bolt is used to abut against the end face of the mounting hole through the first abutting plane, and is connected to the insert embedded in the mounting hole through the screw rod, so as to apply a pre-tightening force toward the outside of the mounting hole to the insert; when the insert is subjected to the pre-tightening force, the measuring needle of the measuring unit passes through the measuring groove and abuts against the end face of the mounting hole and the end face of the insert respectively, so as to measure the distance between the end face of the insert and the end face of the mounting hole. The device can realize the tensioning of the insert in a narrow space, and can realize the tensioning with different torques; the gap between the end face of the insert and the end face of the carbon fiber mounting hole is measured under the torsional tensioning state, simulating the installation conditions of the metal insert and the carbon fiber part, and effectively measuring the gap of the insert after installation.

[0025] The insert installation gap measurement method provided by the present invention also has all the advantages as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present invention or 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of the insert installation gap measuring device provided by the present invention;

[0028] Figure 2 This is a diagram showing the installation state of the tension bolt provided by the present invention;

[0029] Figure 3 This is one of the measurement state diagrams of the insert installation gap measurement device provided by the present invention;

[0030] Figure 4 This is the second measurement state diagram of the insert installation gap measurement device provided by the present invention;

[0031] Figure 5 It is a flow chart of the steps of the insert installation gap measurement method provided by the present invention.

[0032] Reference numerals:

[0033] 10. tension bolt; 110. bolt head; 111. first abutting plane; 112. second abutting plane; 113. measuring groove; 114. hexagon socket hole; 120. screw rod;

[0034] 20. measuring unit; 210. measuring needle; 220. measuring instrument; 230. table base;

[0035] 30, insert; 310, insert end face; 320, bolt hole;

[0036] 40. mounting hole; 410. end face of the mounting hole;

[0037] D. The first length value of the measuring needle; d. The second length value of the measuring needle. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0040] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it 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. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0041] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0043] Combine the following Figures 1 to 5 Specific embodiments of the present invention are described.

[0044] See also Figure 1 An embodiment of the present invention provides an insert installation gap measuring device, which includes a tightening bolt 10 and a measuring unit 20.

[0045] Among them, the tensioning bolt 10 includes a bolt head 110 and a screw rod 120. A first abutment plane 111 is provided on the side of the bolt head 110 relatively close to the screw rod 120, and a second abutment plane 112 is provided on the side of the bolt head 110 relatively far away from the screw rod 120. The first abutment plane 111 and the second abutment plane 112 are respectively the upper and lower planes of the bolt head 110.

[0046] In this embodiment, the first abutting plane 111 and the second abutting plane 112 are parallel to each other.

[0047] like Figure 1 As shown, in this embodiment, a measuring groove 113 is opened on the side wall of the bolt head, one end of the measuring groove 113 extends to the first abutment plane 111, and the other end of the measuring groove 113 extends to the second abutment plane 112, so that the first abutment plane 111 and the second abutment plane 112 are connected.

[0048] It is worth mentioning that in this embodiment, the tensioning bolt 10 is used to cooperate with the insert 30, and is connected to the insert 30 to apply a pre-tightening force to the insert 30 so that the insert 30 is relatively pressed against the mounting hole 40, so as to accurately measure the installation clearance of the insert 30.

[0049] Specifically, Figure 2 As shown, the insert 30 is embedded and installed in the carbon fiber mounting hole 40. The insert 30 has a bolt hole 320 that is axially consistent with the mounting hole 40. The tensioning bolt 10 is connected to the bolt hole 320 through the screw 120. As the tensioning bolt 10 is tightened, the first abutting plane 111 of the tensioning bolt 10 abuts against the end face 410 of the mounting hole. The insert 30 is moved toward the outside of the mounting hole 40 by the tensioning force of the tensioning bolt 10, so that the insert 30 presses against the mounting hole 40, thereby allowing the insert 30 to reach a predetermined measurement state.

[0050] In this embodiment, the measuring unit is a micrometer, which includes a measuring instrument 220 and a measuring needle 210. The measuring needle 210 is used to penetrate the measuring slot 113 and abut against the end face 410 of the mounting hole and the end face 310 of the insert respectively. The distance between the end face 310 of the insert and the end face 410 of the mounting hole is measured by the length difference of the measuring needle 210.

[0051] Specifically, Figure 3 As shown, the measuring needle 210 abuts against the insert end surface 310 through the measuring groove 113, and at the same time, the other end of the measuring needle 210 is flush with the second abutting plane 112, and the length D value of the measuring needle 210 can be obtained by reading the micrometer.

[0052] like Figure 4 As shown, the measuring needle 210 abuts against the end surface 410 of the mounting hole through the measuring groove 113, and at the same time, the other end of the measuring needle 210 is flush with the second abutting plane 112, and the length d value of the other measuring needle 210 can be obtained by reading the micrometer.

[0053] The difference between D and d can be used to obtain the distance between the end face 410 of the mounting hole and the end face 310 of the insert, and the gap between the insert 30 and the end face of the mounting hole in a tensioned state can be obtained.

[0054] When the insert 30 is subjected to a pre-tightening force, the measuring needle 210 of the measuring unit 20 penetrates the measuring slot 113 and abuts against the mounting hole end face 410 and the insert end face 310 respectively, so as to measure the gap between the insert end face 310 and the mounting hole end face 410. The device can realize the tightening of the insert 30 in a narrow space and can realize the tightening with different torques; the gap between the insert end face 310 and the carbon fiber mounting hole end face 410 is measured under the torsional tightening state, simulating the installation condition of the metal insert and the carbon fiber part, and effectively measuring the insert gap after installation.

[0055] In this embodiment, the insert 30 is torsionally tightened by the tightening bolts 10 , and different specifications of tightening bolts 10 can achieve the tightening of inserts of different specifications. Therefore, the device can measure the installation clearance of the insert 30 under different torsion tightening states.

[0056] It should be noted that, when the tension bolt 10 is installed, the measuring groove 113 is directly opposite to the end face 410 of the mounting hole and the end face 310 of the insert. It is necessary to ensure that the measuring needle 210 can abut against the end face 410 of the mounting hole and the end face 310 of the insert through the measuring groove 113. The measuring groove 113 on the tension bolt 10 realizes that the measuring position is exposed when the bolt is tightened.

[0057] Preferably, the extending direction of the measuring groove 113 is parallel to the axial direction of the screw rod 120, so as to ensure that the measuring needle 210 is deeply inserted into the measuring groove 113, thereby ensuring the accuracy of the measurement.

[0058] like Figure 1 As shown, in one embodiment, a plurality of measuring grooves 113 are provided, and the plurality of measuring grooves 113 are evenly arranged along the peripheral wall of the bolt head 110 .

[0059] Each measuring slot 113 can perform one measurement, and multiple sets of data are averaged to ensure the accuracy of the measurement.

[0060] At the same time, measurements are performed at different circumferential positions of the bolt head 110 to further ensure the accuracy of the spacing measurement.

[0061] like Figure 1 As shown, in one embodiment, a hexagonal hole 114 is provided at the center of the second abutment plane 112 of the bolt head 110 for rotating and tightening the bolt 10 to apply different degrees of pre-tightening force to the insert 30 .

[0062] like Figure 1 As shown, in one embodiment, the measuring unit 20 further includes a base 230 , and the measuring probe 210 is connected to the base 230 .

[0063] Preferably, the base 230 has a measuring reference surface, the measuring needle 210 is vertically connected to the measuring reference surface, and the measuring reference surface is used to abut against the second abutting plane 112 .

[0064] During measurement, it is only necessary to place the measuring reference surface of the dial base 230 against the second contact plane 112 so that the measuring needle 210 extends into the measuring slot 113 .

[0065] As a further improvement, in one embodiment, the measuring reference surface is magnetic and can be attracted to the second abutting plane 112 to prevent the table base 230 and the measuring needle 210 from deviating.

[0066] In one embodiment, a detachable and replaceable measuring needle may be designed, and a suitable measuring needle may be selected according to the thickness of the bolt head 110 and the gap size of the insert 30 to measure the insert gap.

[0067] like Figure 5 As shown, a method for measuring the gap between inserts is provided. The method is implemented based on the above-mentioned device for measuring the gap between inserts, and comprises the following steps:

[0068] Step 1: Apply a pre-tightening force to the insert 30 toward the outside of the mounting hole 40 by tightening the bolt 10; so that the insert 30 is relatively pressed against the mounting hole 40 to be in a tightened state.

[0069] Step 2: Measure the first distance by the measuring unit 20 , where the first distance is the distance from the second abutting plane 112 to the insert end surface 310 .

[0070] Specifically, in this step, Figure 3 As shown, the measuring reference surface of the meter base 230 is abutted against the second abutting plane 112, and the measuring needle 210 is abutted against the insert end surface 310 to obtain the first length value D of the measuring needle;

[0071] Step 3: Measure the second distance by the measuring unit 20 , where the second distance is the distance from the second abutting plane 112 to the end surface 410 of the mounting hole;

[0072] Specifically, in this step, Figure 4 As shown, the measuring reference surface of the meter base 230 is abutted against the second abutting plane 112, and the measuring needle 210 is abutted against the end surface 410 of the mounting hole to obtain the second length value d of the measuring needle.

[0073] Step 4: The distance between the insert end face 310 and the mounting hole end face 410 can be obtained by the difference between the first length value D of the measuring needle and the second length value d of the measuring needle.

[0074] By using this method, the gap between the end face of the insert 30 in a compressed state and the end face 410 of the mounting hole can be effectively measured, the installation condition of the metal insert and the carbon fiber part can be simulated, and the gap between the installed inserts can be measured.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An insert installation gap measuring device, characterized in that: include: A tensioning bolt (10) comprises a bolt head (110) and a screw rod (120); a first abutting plane (111) is provided on a side of the bolt head (110) relatively close to the screw rod (120), and a second abutting plane (112) is provided on a side of the bolt head (110) relatively far from the screw rod (120); a measuring groove (113) is provided on a side wall of the bolt head (110) for connecting the first abutting plane (111) and the second abutting plane (112); The tension bolt (10) is configured to abut against the end surface of the mounting hole (40) through the first abutment plane (111), and to be connected to an insert (30) embedded in the mounting hole (40) through the screw rod (120) so as to apply a pre-tightening force to the insert (30); The measuring unit (20) comprises a measuring instrument (220) and a measuring needle (210), wherein the measuring needle (210) is used to penetrate the measuring slot (113) and respectively abut against the end face of the mounting hole (40) and the end face of the insert (30) to measure the distance between the end face of the insert (30) and the end face of the mounting hole (40).

2. The insert installation gap measuring device according to claim 1, characterized in that: When the tension bolt (10) is in an installed state, the measuring groove (113) is directly opposite to the end surface of the installation hole (40) and the end surface of the insert (30).

3. The insert installation gap measuring device according to claim 2, characterized in that: The extending direction of the measuring groove (113) is parallel to the axial direction of the screw rod (120).

4. The insert installation gap measuring device according to claim 1, characterized in that: There are a plurality of measuring grooves (113), and the plurality of measuring grooves (113) are evenly arranged along the peripheral wall of the bolt head (110).

5. The insert installation gap measuring device according to claim 1, characterized in that: A hexagonal hole (114) is provided at the center of the second abutting plane (112).

6. The insert installation gap measuring device according to claim 1, characterized in that: The measuring instrument (220) further comprises a meter base (230), and the measuring needle (210) is connected to the meter base (230).

7. The insert installation gap measuring device according to claim 6, characterized in that: The meter base (230) has a measurement reference surface, the measuring needle (210) is vertically connected to the measurement reference surface, and the measurement reference surface is used to abut against the second abutment plane (112).

8. The insert installation gap measuring device according to claim 7, characterized in that: The measuring reference surface is magnetic and is used to be attracted to the second abutting plane (112).

9. A method for measuring the gap between inserts, characterized in that: The insert installation gap measuring device according to any one of claims 1 to 8 comprises: Applying a pre-tightening force toward the outside of the mounting hole (40) to the insert (30) by tightening the bolt (10); Measuring a first distance by means of the measuring unit (20), wherein the first distance is the distance from the second abutting plane (112) to the end surface of the insert (30); Measuring a second distance by means of the measuring unit (20), the second distance being the distance from the second abutting plane (112) to the end surface of the mounting hole (40); The distance between the end surface of the insert (30) and the end surface of the mounting hole (40) is obtained by the difference between the first distance and the second distance.

10. The insert installation gap measurement method according to claim 9, characterized in that: The step of measuring the first distance by the measuring unit (20) comprises: Abutting the measuring reference surface of the gauge base (230) against the second abutting plane (112), and obtaining a first length value of the measuring needle (210) by abutting the measuring needle (210) against the end surface of the insert (30); The step of measuring the second distance by the measuring unit (20) comprises: The measuring reference surface of the meter base (230) is abutted against the second abutting plane (112), and the second length value of the measuring needle (210) is obtained by abutting the measuring needle (210) against the end surface of the mounting hole (40).

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