A measuring unit for deep holes with equal diameter

Abstract

The present invention discloses a constant diameter deep hole measuring unit, comprising a measuring mechanism and accompanying support mechanisms installed on both sides of the measuring mechanism. The accompanying support mechanism supports the measuring mechanism in the constant diameter deep hole to be measured, and the measuring mechanism measures and displays the inner diameter and the center of the circle at the position to be measured. The present invention adopts an adaptive measuring mechanism and an accompanying support mechanism, which can simultaneously complete the dual detection of the inner diameter and the center of the circle at the position to be measured, and can significantly improve the measurement accuracy and efficiency of the constant diameter deep hole measurement system.

Description

Technical Field

[0001] The invention discloses an adaptive measuring unit, in particular to a constant diameter deep hole measuring unit, belonging to the technical field of deep hole detection tools. Background Art

[0002] With the continuous deepening of robot technology in deep hole detection of modern aircraft, ships, large precision instruments and other products, the detection performance and function of the measuring unit as the core component of deep hole measurement tools are particularly important. The existing deep hole measurement units can only complete the measurement of single technical indicators, such as straightness or inner diameter, and most of them are simplified during measurement. These have affected the efficiency and measurement accuracy of deep hole measurement to a certain extent. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the existing deep hole measuring unit mentioned in the background technology has the problems of low measuring accuracy and low measuring efficiency.

[0004] To solve the above problems, the technical solution adopted by the present invention is:

[0005] A measuring unit for deep holes of equal diameters, comprising a measuring mechanism and accompanying supporting mechanisms installed on both sides of the measuring mechanism, wherein the measuring mechanism comprises a supporting tube, a tube cover 1, a tube cover 2, a combined frustum-shaped slider, a measuring rod seat, a ball-end measuring rod, a distance measuring sensor, a laser projector, a bracket and a translation bracket 1; the two ends of the supporting tube are respectively equipped with a tube cover 1 and a tube cover 2, and one end of the supporting tube connected to the tube cover 2 is uniformly distributed with an axial slide groove 1 divided into four equal parts along the circumferential direction; the combined frustum-shaped slider is placed in the supporting tube, comprising a frustum-shaped axial slider and a frustum-shaped radial slider; the frustum-shaped radial slider is provided with a slide groove 2 divided into three equal parts along its generatrix direction; the One end of the measuring rod seat can be slidably installed in the second slide groove, and the other end passes through the radial through hole in the middle of the support tube to be installed with the ball head measuring rod; the frustum-shaped axial slider is connected to the translation bracket through a compression spring; the translation bracket is installed in the axial slide groove, and the side of the translation bracket away from the compression spring is equipped with an adjusting nut; the inner side of the second cylinder cover is equipped with a distance measuring sensor; the second compression spring, a cover, a laser projector and a bracket are installed between the cylinder cover and the frustum-shaped radial slider; the cover is installed on the center hole of the frustum-shaped radial slider; the laser projector and the bracket are installed in the center hole of the cover; the second compression spring is arranged between the cylinder cover and the cover;

[0006] The accompanying support mechanism comprises a T-shaped support tube, a tube cover 3, a translation bracket 2, a compression spring 3, an adjusting nut 2 and a connecting rod assembly; the accompanying support mechanism has two, which are arranged on both sides of the support tube by fixing the large end of the T-shaped support tube to the tube covers on both sides of the support tube; the small end of the T-shaped support tube is equipped with a tube cover 3; the translation bracket 2 is installed in an axial slide groove 2 which is divided into four equal parts in the middle part of the T-shaped support tube, and a compression spring 3 and an adjusting nut 2 are successively installed between the translation bracket 2 and the large end of the T-shaped support tube, and the adjusting nut 2 is arranged at one end of the compression spring 3 close to the large end of the T-shaped support tube; the connecting rod assembly is evenly distributed at three equal parts of the outer circle of the tube cover 3, and comprises a fixed rod, a rocker rod, a translation rod and a driving rod; the fixed rod is fixed to the radial direction of the tube cover 3; the translation rod and the fixed rod are interconnected by two mutually parallel rocker rods with a rotating pair, and the translation rod and the fixed rod are parallel to each other; one end of the driving rod is connected to the translation bracket 2, and the other end is connected to the middle part of the rocker rod; the end of the translation rod is equipped with an accompanying guide wheel.

[0007] The frustoconical axial slider and the frustoconical radial slider are interconnected along the radial direction by a sliding pair.

[0008] The laser projector and the bracket are located at the geometric centroid of three ball-head measuring rods on the frustum-shaped radial sliding block.

[0009] The elastic force generated by the compression spring 1 is smaller than the elastic force generated by the compression spring 2.

[0010] The beneficial effects of the present invention are:

[0011] 1. The present invention adopts a group of combined frustum-shaped sliders, which simultaneously realizes the double precise measurement of the inner diameter and the hole center of the equal-diameter deep hole detection position, effectively improving the accuracy and efficiency of deep hole measurement.

[0012] 2. The present invention makes full use of the characteristic that the inner diameter variation of equal-diameter deep holes is small, and adopts an adaptive connecting rod mechanism and a spring, which not only effectively ensures the adaptability and reliability of the measuring unit, but also simplifies the driving device of the measuring unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall model of the present invention;

[0014] Figure 2 It is an overall cross-sectional view of the present invention. DETAILED DESCRIPTION

[0015] In order to make the content of the present invention more obvious and understandable, the specific implementation manner is further described below in conjunction with the accompanying drawings.

[0016] like Figure 1 As shown, a constant diameter deep hole measuring unit includes a measuring mechanism 1000 and accompanying supporting mechanisms 2000 installed on both sides of the measuring mechanism.

[0017] like Figure 2 As shown, the measuring mechanism 1000 includes a support tube 1001, a tube cover 1002, a tube cover 1003, a combined frustum-shaped slider, a measuring rod seat 1009, a ball-end measuring rod 1010, a distance measuring sensor 1011, a laser projector and a bracket 1012 and a translation bracket 1013; the two ends of the support tube 1001 are respectively equipped with a tube cover 1002 and a tube cover 1003, and the end of the support tube 1001 close to the tube cover 1003 is evenly distributed with an axial slide groove 1 divided into four parts along the circumferential direction; the combined frustum-shaped slider placed in the support tube 1001 includes a frustum-shaped radial slider 1004 and a frustum-shaped axial slider 1005, which are interconnected radially by a sliding pair; the frustum-shaped radial slider 1004 is provided with a slide groove 2 divided into three parts along its generatrix direction; one end of the measuring rod seat 1009 can be slidably installed in the slide groove 2, and the other end passes through the support tube 1001 The radial through hole in the middle is used to mount the ball head measuring rod 1010; the conical axial slider 1005 is connected to the translation bracket 1013 through a compression spring 1006; the translation bracket 1013 is installed in the axial slide groove 1, and the side of the translation bracket 1013 facing away from the compression spring 1006 is provided with an adjusting nut 1014; the inner side of the cylinder cover 1003 is provided with a distance sensor 1011; the compression spring 1007, the cover 1008 and the laser projector and the bracket 1012 are provided between the cylinder cover 1002 and the conical radial slider 1004; the cover 1008 is installed in the center hole of the cover 1008; the laser projector and the bracket 1012 are installed in the center hole of the cover 1008, and are located at the geometric centroid of the three ball head measuring rods 1010 on the conical radial slider 1004; the elastic force generated by the compression spring 1006 is smaller than the elastic force generated by the compression spring 1007.

[0018] The accompanying support mechanism 2000 includes a T-shaped support cylinder 2001, a cylinder cover 2002, a translation bracket 2003, a compression spring 2004, an adjustment nut 2 and a connecting rod assembly; the large end of the T-shaped support cylinder 2001 is fixed to the end face of the cylinder cover 1002, and the small end is connected to the cylinder cover 3 2002; the translation bracket 2003 is installed in the axial slide groove 2 divided into four equal parts in the middle of the T-shaped support cylinder 2001, and the compression spring 3 2004 and the adjustment nut 2 are installed between the translation bracket 2003 and the large end of the T-shaped support cylinder 2001 in sequence, and the adjustment nut 2 is pressed on the compression spring 3 2004 close to the T-shaped support cylinder 200 1 one end of the large end; the connecting rod assembly is evenly distributed at three equal places on the outer circle of the cylinder cover three 2002, including a fixed rod 2005, a swing rod 2006, a translation rod 2007 and a driving rod 2008; the fixed rod 2005 is fixedly connected to the radial direction of the cylinder cover three 2002; the translation rod 2007 and the fixed rod 2005 are connected to two mutually parallel swing rods 2006 through a rotating pair, and the translation rod 2007 and the fixed rod 2005 are parallel to each other; one end of the driving rod 2008 is connected to the translation bracket two 2003, and the other end is connected to the middle part of the swing rod 2006; the end of the translation rod 2007 is equipped with a traveling guide wheel 2009.

[0019] The working principle of a constant diameter deep hole measurement unit is as follows:

[0020] 1) Before measurement, first determine the appropriate ball head measuring rod 1010 according to the inner diameter of the deep hole of equal diameter of the workpiece to be measured, and connect it to the measuring rod seat 1009; with the help of the corresponding inner diameter standard ring gauge, move the adjustment nut 1014, adjust the compression spring 1006 and the compression spring 2 1007, complete the calibration of the measuring unit, and record the calibration value, that is, the measurement value D of the distance sensor 1011 0 And the corresponding deep hole inner diameter Φ 0 .

[0021] 2) During measurement, the accompanying support mechanism 2000 supports the measuring mechanism 1000 in the measured deep hole of equal diameter, and the measuring mechanism 1000 measures and displays the inner diameter and the center of the circle at the position to be measured. The specific implementation steps are as follows:

[0022] a) Move the adjustment nut 2, adjust the compression spring 3 2004, and adjust the radial position of the accompanying guide wheel 2009 through the connecting rod assembly, so that the measuring mechanism 1000 and the accompanying support mechanism 2000 can be placed in the measured deep hole of equal diameter; during the measurement process, according to the inner diameter of the measured position, the compression spring 3 2004 is forced to adjust itself, and the accompanying guide wheel 2009 is always pressed against the inner wall of the measured hole through the connecting rod assembly;

[0023] b) When the measuring unit 1000 and the accompanying support mechanism 2000 move in the deep hole of equal diameter, due to the change of the hole diameter at the measured position, the combined cone-shaped slider slides axially under the combined action of the pressure from the inner wall of the hole and the elastic force of the compression spring 1006 and the compression spring 2 1007 on the three ball-end measuring rods 1010, and the corresponding measurement value D of the distance measuring sensor 1011 is recorded. Combined with the above D 0 And the corresponding deep hole inner diameter Φ 0 , calculate the instantaneous inner diameter of the deep hole with equal diameter; at the same time, due to the change of the hole diameter of the measured position, the frustum-shaped radial slider 1004 will automatically produce relative radial sliding relative to the frustum-shaped axial slider 1005, so that the laser projector and the bracket 1012 are located at the hole center position of the measured position, that is, the instantaneous hole center position is projected by the laser projector, and the instantaneous hole center position is displayed.

[0024] The above description is only a preferred implementation example of the equal-diameter deep hole measurement unit according to the present invention, but the implementation scope of the present invention is not limited to this example.

Claims

1. A constant diameter deep hole measuring unit, comprising a measuring mechanism (1000) and accompanying support mechanisms (2000) installed on both sides of the measuring mechanism, characterized in that: The measuring mechanism (1000) comprises a support tube (1001), a tube cover 1 (1002), a tube cover 2 (1003), a combined cone-shaped slider, a measuring rod seat (1009), a ball-end measuring rod (1010), a distance measuring sensor (1011), a laser projector and a bracket (1012) and a translation bracket 1 (1013); the two ends of the support tube (1001) are respectively connected to the tube cover 1 (1002) and the tube cover 2 (1003); the support tube (1001) is provided with a plurality of projections, a plurality of projections, and a plurality of projections. 01) has an end connected to the second cylinder cover (1003) and an axial slide groove (1) evenly distributed in four equal parts along the circumferential direction; the combined frustum-shaped slider is placed in the support cylinder (1001), including a frustum-shaped radial slider (1004) and a frustum-shaped axial slider (1005); the frustum-shaped radial slider (1004) is provided with a slide groove (2) divided into three equal parts along its generatrix direction; one end of the measuring rod seat (1009) is slidably installed in the slide groove (2), and the other end passes through the support cylinder (1001) ) is connected to a ball head measuring rod (1010) through a radial through hole in the middle; the frustum-shaped axial slider (1005) is connected to a translation bracket (1013) through a compression spring (1006); the translation bracket (1013) is installed in an axial slide groove (1), and an adjusting nut (1014) is installed on the side of the translation bracket (1013) away from the compression spring (1006); a distance measuring sensor (1011) is installed on the inner side of the cylinder cover (1003); the cylinder cover A second compression spring (1007), a cover (1008), a laser projector and a bracket (1012) are installed between the first cylinder cover (1002) and the frustum-shaped radial slider (1004); the cover (1008) is installed on the center hole of the frustum-shaped radial slider (1004); the laser projector and the bracket (1012) are installed in the center hole of the cover (1008), and the second compression spring (1007) is arranged between the first cylinder cover (1002) and the cover (1008); The accompanying support mechanism (2000) comprises a T-shaped support tube (2001), a tube cover three (2002), a translation bracket two (2003), a compression spring three (2004) and a connecting rod assembly; the accompanying support mechanism (2000) has two, which are arranged on both sides of the support tube (1001) by fixing the large end of the T-shaped support tube (2001) to the tube covers on both sides of the support tube (1001); the small end of the T-shaped support tube (2001) is connected to the tube cover three (2002); the translation bracket two (2003) is installed in the axial slide groove two divided into three equal parts in the middle part of the T-shaped support tube (2001), and the compression spring three (2004) and the adjustment nut two are arranged in sequence between the translation bracket two (2003) and the large end of the T-shaped support tube (2001), and the adjustment nut two is arranged near the T-shaped support tube ( 2001); the connecting rod assembly is evenly distributed at three equal parts of the outer circle of the cylinder cover three (2002), and the connecting rod assembly includes a fixed rod (2005), a rocker rod (2006), a translation rod (2007) and a driving rod (2008); the fixed rod (2005) is fixedly connected to the radial direction of the cylinder cover three (2002); the translation rod (2007) and the fixed rod (2005) are connected to two rocker rods (2006) parallel to each other through a rotating pair, and the translation rod (2007) and the fixed rod (2005) are parallel to each other; one end of the driving rod (2008) is connected to the translation bracket two (2003), and the other end is connected to the middle part of the rocker rod (2006); the end of the translation rod (2007) is equipped with a trailing guide wheel (2009).

2. The equal diameter deep hole measuring unit according to claim 1, characterized in that: The frustoconical axial slider (1005) and the frustoconical radial slider (1004) are interconnected along the radial direction by a sliding pair.

3. The equal diameter deep hole measuring unit according to claim 1, characterized in that: The laser projector and the bracket (1012) are located at the geometric centroid of three ball-head measuring rods (1010) on the cone-shaped radial slider (1004).

4. The equal diameter deep hole measuring unit according to claim 1, characterized in that: The elastic force generated by the compression spring 1 (1006) is smaller than the elastic force generated by the compression spring 2 (1007).

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