CN217953413U

CN217953413U - Cylindrical part measuring device

Info

Publication number: CN217953413U
Application number: CN202222427992.9U
Authority: CN
Inventors: 张晋辉; 张德平; 罗瑞; 李婧
Original assignee: Jinzhong University
Current assignee: Jinzhong University
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2022-12-02
Anticipated expiration: 2032-09-14

Abstract

The utility model discloses a cylindric part measuring device, include: the device comprises a base, a carrier roller mechanism and a laser measuring mechanism; the carrier roller mechanism comprises a carrier roller mechanism body, wherein the carrier roller mechanism body is provided with two groups, each group of carrier roller mechanism body comprises two supports, two bases are respectively positioned on two sides of each base, a carrier roller shaft is arranged between the two supports, the carrier roller shafts on the two groups of carrier roller mechanisms are parallel, carrier rollers are arranged on the carrier roller shafts, and one end of one carrier roller shaft is also connected with a stepping motor; the laser measuring mechanism comprises a first laser displacement sensor arranged on the base, an electronic telescopic rod is arranged on the first laser displacement sensor, a second laser displacement sensor is arranged at the upper end of the electronic telescopic rod, and a cylindrical part is arranged between the two carrier rollers during measurement; the utility model provides a can carry out precision measurement's measuring device to key quality technical index such as wall thickness, axiality, profile error of cylindric part.

Description

Cylindrical part measuring device

Technical Field

The utility model belongs to the technical field of measuring device, concretely relates to cylindric part measuring device.

Background

The large thin-wall cylindrical part is easy to deform and poor in rigidity, secondary deformation can be caused due to the influence of errors in the rolling and welding processes, and the problem that how to control the deformation of the parts becomes difficult to solve in the mechanical industry is solved. In addition, the large-sized thin-walled cylinder part is a typical basic structure part of core equipment in the fields of aerospace, carrier rockets, missiles, chemical engineering containers, precision manufacturing and the like, and has high manufacturing requirements on processing wall thickness, coaxiality and contour errors. The method is a key link for ensuring the quality of the cylindrical part production product.

However, in the existing measurement of cylindrical parts, the thickness detection of large thin-wall workpieces is realized by means of traditional gauges, handheld thickness measuring instruments and the like. Generally, a roundness meter is used for directly carrying out contact measurement when contour errors are more, the measurement methods usually face the problems of high labor intensity, easiness in scratching the surface of a part, easiness in generating measurement errors due to subjective factors, low efficiency and the like, and the measurement method has large spatial position errors of measurement points and cannot meet the requirement for accurately measuring key quality technical indexes of thin-wall cylindrical parts.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cylindric part measuring device provides one kind and can carry out precision measurement's measuring device to the key quality technical indicator of cylindric part.

The utility model discloses a technical scheme is, a cylindric part measuring device, include:

a base;

the carrier roller mechanism comprises two carrier roller shafts arranged on the base, and one end of one carrier roller shaft is also connected with a stepping motor;

the laser measuring mechanism is located between the two carrier roller shafts, comprises a first laser displacement sensor arranged on the base in a sliding mode, and further comprises an electronic telescopic rod arranged on the base in a sliding mode, the first laser displacement sensor and the electronic telescopic rod can slide along the axial direction of the carrier roller shafts, and a second laser displacement sensor is arranged at the upper end of the electronic telescopic rod.

The upper surface of base is provided with T type groove, and the opposite side of base still is provided with the bar groove, and the bar groove is parallel with the cross slot on the T type groove, and first laser displacement sensor and electron telescopic link all slide the setting in the perpendicular inslot in T type groove, and second laser displacement sensor is connected on the electron telescopic link through the regulation pole that a level set up.

The bottom of two supports all is provided with the slide, and the bottom surface of slide is provided with two sliders, and two sliders correspond the cross slot and the setting of bar groove in T type groove respectively, and consequently two sets of bearing roller mechanisms homoenergetic freely slide along the direction in bar groove.

The carrier roller shaft is connected with the support through an angular contact bearing.

The carrier roller shaft is connected with the stepping motor through a coupler.

The bottom of base still is provided with elevating system, and elevating system arranges four sliding support that set up in the base bottom including being the rectangle, and sliding support's cross-section is the L type, still is provided with the spout on sliding support's the vertical face, still including setting up two rectangle changers between two sliding support, and two rectangle changers are alternately arranged, and two summits of rectangle changer are passed through the pivot and are connected with the sliding support rotation, other two summits pass through the spout with sliding support sliding connection.

The intersection point of the two rectangular rotating frames is hinged.

And a support rod is also arranged in one rectangular rotating frame.

And the sliding supports are connected with the sliding rails in a sliding manner and can slide along the length direction of the sliding supports.

The beneficial effects of the utility model are that:

the utility model discloses a cylindric part measuring device through the method with two laser displacement sensor correlation, will be detected the part and install between two laser displacement sensor's correlation scope and on the rotating device of location, utilizes step motor drive bearing roller rotation to come accurate control to the non-contact automatic measure who is detected the part. The laser displacement sensors are fixed, the detected part is guided by the rotation of the stepping motor, data statistics is carried out by the two laser displacement sensors at each alpha-rotation angle, therefore, the total detection frequency is 360 DEG/alpha (the total detection frequency can be set according to the detection requirement), finally, the data measured by the two laser displacement sensors are transmitted to a computer, according to data analysis, the data measured by subtracting the two laser displacement sensors from the distance between the two laser displacement sensors at each position is the wall thickness of the cylindrical part, and then the wall thickness of the detected part can be accurately obtained by using an arithmetic mean value method and a least square method; when light of a laser transmitter inside the second laser displacement sensor is emitted into the cylindrical part, a laser ring is formed inside the cylindrical part, and relevant parameters of the laser ring are transmitted to a computer through a CCD linear camera inside the second laser displacement sensor, so that the structure inside the cylindrical part and the inner roundness and coaxiality of the cylindrical part are mapped by analyzing and calculating the ellipticity and deformation of the laser ring; a first laser displacement sensor is arranged outside the cylindrical part, and the profile error is scanned by rotating the carrier roller; therefore, the accurate measurement of key quality technical indexes such as wall thickness, coaxiality, contour error and the like of the cylindrical part is realized;

the utility model discloses a cylindrical part measuring device, which realizes convenient measurement of other larger and smaller cylindrical parts, namely, when meeting large cylindrical parts, platform measurement can be descended, and when meeting small parts, platform measurement can be ascended;

the utility model discloses a cylindric part measuring device according to the detection demand, can make large-scale or great and the difficult cylindric part that removes of weight do not make the reciprocating linear motion of high accuracy according to appointed movement method through the slide rail.

Drawings

Fig. 1 is a front view of a cylindrical part measuring device according to the present invention;

fig. 2 is a side view of a cylindrical part measuring device of the present invention;

FIG. 3 is a top view of the upper base of the cylindrical part measuring device of the present invention;

fig. 4 is a schematic view of a lifting mechanism of the cylindrical part measuring device of the present invention.

In the drawing, 1, a sliding rail, 2, a rotating shaft, 3, a sliding support, 4, a base, 5, a supporting rod, 6, a support, 7, an angular contact bearing, 8, a cylindrical part, 9, a second laser displacement sensor, 10, an electronic telescopic rod, 11, a first laser displacement sensor, 12, a carrier roller shaft, 13, a carrier roller, 14, a coupler, 15, a stepping motor, 16, a sliding groove, 17.T-shaped grooves, 18, a strip-shaped groove, 19, a sliding plate and 20, a rectangular rotating frame are arranged.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and the protection solutions of the present invention are not limited thereto.

Example 1

The utility model discloses a cylindric part measuring device, as shown in fig. 1-3, include: the device comprises a base 4, a carrier roller mechanism and a laser measuring mechanism; the carrier roller mechanism comprises four supports 6 arranged on a base 4, the four bases 4 are respectively positioned on the bases 4 in pairs, carrier roller shafts 12 which are parallel to each other are arranged between the two supports 6, carrier rollers 13 are arranged on the carrier roller shafts 12, and one end of one carrier roller shaft 12 is also connected with a stepping motor 15; laser measuring mechanism is including sliding the first laser displacement sensor 11 that sets up on base 4, still including sliding electron telescopic link 10 that sets up on base 4, and first laser displacement sensor 11 and electron telescopic link 10 homoenergetic slide along the length direction of bearing roller axle 12, and the upper end of electron telescopic link 10 is provided with second laser displacement sensor 9, and second laser displacement sensor 9 is connected on electron telescopic link 10 through the regulation pole of a level setting.

Example 2

Further, on the basis of embodiment 1, the upper surface of base 4 is provided with T type groove 17, and the opposite side of base 4 still is provided with bar groove 18, and bar groove 18 is parallel with the cross slot on T type groove 17, and first laser displacement sensor 11 and electronic telescopic link 10 all slide and set up in the perpendicular inslot of T type groove 17, and second laser displacement sensor 9 is connected through the regulation pole of a level setting on electronic telescopic link 10. The laser measuring mechanism can therefore be moved back and forth along the T-slot 17 to measure the profile variations of the part at different positions.

Example 3

Further, on embodiment 2's basis, every group bearing roller mechanism all slides and sets up on base 4, and the bottom of two supports 6 all is provided with slide 19, and slide 19's bottom surface is provided with two sliders, and two sliders correspond the horizontal groove and the setting of bar groove 18 of T type groove 17 respectively, and consequently two sets of bearing roller mechanisms homoenergetic are along the direction free slip of bar groove 18, consequently can adjust the distance between two bearing rollers according to the size of cylindric part to the part that the adaptation size is different.

The carrier roller shaft 12 is connected with the support 6 through an angular contact bearing 7. The carrier roller shaft 12 is connected with the stepping motor 15 through the coupler 14, and the stepping motor 15 can guide the carrier roller 13 to rotate synchronously, so that the cylindrical part 8 can rotate at a constant speed in the measuring process.

Specifically, the axes of the two carrier rollers 13 must be kept in a parallel state during installation, the vertical jump of the carrier rollers during operation should be reduced as much as possible, and the distance between the two sets of carrier roller supports can be adjusted through the T-shaped groove to meet the requirements for measuring parts with different sizes.

Example 4

Further, on the basis of embodiment 3, as shown in fig. 4, the bottom of the base 4 is further provided with a lifting mechanism, the lifting mechanism includes four sliding supports 3 arranged at the bottom of the base 4 in a rectangular arrangement, the cross section of each sliding support 3 is L-shaped, a sliding chute 16 is further arranged on a vertical surface of each sliding support 3, and the lifting mechanism further includes two rectangular rotating frames 20 arranged between the two sliding supports 3, the two rectangular rotating frames 20 are arranged in a crossed manner, two vertexes of each rectangular rotating frame 20 are rotatably connected with the corresponding sliding support 3 through the rotating shaft 2, and the other two vertexes are slidably connected with the corresponding sliding support 3 through the corresponding sliding chute 16; the intersection of the two rectangular rotating frames 20 is hinged; a support bar 5 is also provided inside one rectangular turret 20.

Further, the bottoms of the two sliding supports 3 positioned on the lower side are also provided with sliding rails 1, the sliding rails are provided with strip-shaped sliding grooves, and the sliding supports 3 are connected with the sliding rails 1 in a sliding mode and can slide along the length direction of the sliding supports.

The utility model relates to a cylindric part measuring device measures inside including: the wall thickness, the profile error and the coaxiality are measured by taking a laser detector as a reference and by a method of oppositely shooting two laser displacement sensors, the detected part is arranged between the opposite shooting ranges of the two laser displacement sensors and on a positioning rotating device, and meanwhile, the first laser displacement sensor and the second laser displacement sensor are ensured to be positioned on a vertical line and to be vertical to the detected part, so that the stepping motor is used for driving the carrier roller to rotate to accurately control the non-contact automatic measurement of the detected part. During measurement, the laser displacement sensors are fixed, the detected part is guided by the rotation of the stepping motor, data statistics is carried out by the two laser displacement sensors at each alpha rotation angle, therefore, the total detection times are 360 degrees/alpha times (the total detection times can be set according to detection requirements), finally, the data measured by the two laser displacement sensors are transmitted to a computer, according to data analysis, the data measured by the two laser displacement sensors is subtracted from the distance between the two laser displacement sensors at each position to obtain the wall thickness of the cylindrical part, and then, the average value method and the least square method are utilized to accurately obtain the wall thickness of the detected part; when light of a laser transmitter inside the second laser displacement sensor is emitted into the cylindrical part, a laser ring is formed inside the cylindrical part, and relevant parameters of the laser ring are transmitted to a computer through a CCD linear camera inside the second laser displacement sensor, so that the structure inside the cylindrical part and the inner roundness and coaxiality of the cylindrical part are mapped by analyzing and calculating the ellipticity and deformation of the laser ring; a first laser displacement sensor is arranged outside the cylindrical part, and the profile error is scanned by rotating the carrier roller; therefore, the accurate measurement of key quality technical indexes such as wall thickness, coaxiality, contour error and the like of the cylindrical part is realized.

The above-mentioned embodiments are only preferred embodiments of the present invention, the protection scope of the present invention is not limited thereto, and any person skilled in the art can obviously obtain simple changes or equivalent replacements of the technical solutions within the technical scope disclosed in the present invention, all of which belong to the protection scope of the present invention.

Claims

1. A cylindrical part measuring device, comprising:

a base (4);

the carrier roller mechanism comprises two carrier roller shafts (12) arranged on the base (4), and one end of one carrier roller shaft (12) is also connected with a stepping motor (15);

laser measuring mechanism is located between two bearing roller axle (12), sets up including sliding first laser displacement sensor (11) of base (4), still including sliding electron telescopic link (10) that sets up on base (4), first laser displacement sensor (11) and electron telescopic link (10) homoenergetic are along the endwise slip of bearing roller axle (12), the upper end of electron telescopic link (10) is provided with second laser displacement sensor (9).

2. The cylindrical part measuring device according to claim 1, wherein a T-shaped groove (17) is formed in the upper surface of the base (4), a bar-shaped groove (18) is further formed in the other side of the base (4), the bar-shaped groove (18) is parallel to a transverse groove in the T-shaped groove (17), the first laser displacement sensor (11) and the electronic telescopic rod (10) are arranged in a vertical groove of the T-shaped groove (17) in a sliding mode, and the second laser displacement sensor (9) is connected to the electronic telescopic rod (10) through a horizontally arranged adjusting rod.

3. The cylindrical part measuring device according to claim 2, wherein both ends of each carrier roller shaft (12) are rotatably connected to the support (6), the support (6) is fixed on the base (4), and the carrier roller shaft (12) is further provided with a carrier roller (13).

4. A cylindrical part measuring device according to claim 3, characterized in that the bottom of each of the two supports (6) is provided with a sliding plate (19), the bottom surface of each sliding plate (19) is provided with two sliding blocks, and the two sliding blocks are respectively arranged corresponding to the transverse groove and the strip-shaped groove (18) of the T-shaped groove (17), so that the two sets of roller mechanisms can freely slide along the direction of the strip-shaped groove (18).

5. A cylinder part measuring device according to claim 3, characterized in that the connection between the carrier roller shaft (12) and the holder (6) is via an angular contact bearing (7).

6. A cylindrical part measuring device according to claim 1, characterized in that the carrier roller shaft (12) is connected to the stepping motor (15) by a coupling (14).

7. The cylindrical part measuring device according to claim 1, wherein a lifting mechanism is further arranged at the bottom of the base (4), the lifting mechanism comprises four sliding supports (3) which are arranged at the bottom of the base (4) in a rectangular manner, the cross section of each sliding support (3) is L-shaped, a sliding groove (16) is further formed in the vertical surface of each sliding support (3), the cylindrical part measuring device further comprises two rectangular rotating frames (20) which are arranged between the two sliding supports (3), the two rectangular rotating frames (20) are arranged in a crossed manner, two vertexes of each rectangular rotating frame (20) are rotatably connected with the corresponding sliding support (3) through rotating shafts (2), and the other two vertexes are slidably connected with the corresponding sliding support (3) through the corresponding sliding grooves (16).

8. A cylindrical part measuring device according to claim 7, characterized in that the intersection of the two rectangular turrets (20) is hinged.

9. A cylindrical part measuring device according to claim 7, characterized in that a support bar (5) is also provided inside one of said rectangular rotating stands (20).

10. The cylindrical part measuring device according to claim 7, wherein the bottom of the two sliding supports (3) at the lower side are further provided with a sliding rail (1), the sliding rail is provided with a strip-shaped sliding groove, and the sliding supports (3) are slidably connected with the sliding rail (1) and can slide along the length direction of the sliding supports.