Roller geometric accuracy measuring device frame

Abstract

The invention provides a roller geometric accuracy measuring device frame which comprises a measuring base, an instrument assembling structure and a roller bearing structure are arranged on the measuring base, and the instrument assembling structure and the roller bearing structure are oppositely arranged in the transverse direction and can relatively move in the transverse direction. The roller bearing structure is provided with a positioning bearing groove which rotates around the longitudinal axis, the positioning bearing groove is provided with a maintaining structure used for maintaining the roller element line to be horizontal, and in the relative movement process of the instrument assembling structure and the roller bearing structure, the measuring instrument can make reciprocating movement along the roller element line. The device is convenient to operate and simple in structure, and solves the problem that in the prior art, roller geometric precision measurement cannot be rapidly carried out with high precision and low cost.

Description

Technical Field

[0001] The invention relates to the field of bearing roller testing, in particular to a roller geometric accuracy measuring device frame. Background Art

[0002] Bearings are one of the most basic and core parts in the entire machinery manufacturing industry. Among the many types of bearings, roller bearings are the most commonly used, including tapered roller bearings, cylindrical roller bearings, etc. With the vigorous development of industry and manufacturing in recent years, the demand for bearings has increased, and the demand for bearing rollers has also increased accordingly. Therefore, how to detect rollers in large quantities while ensuring accuracy is an urgent problem that needs to be solved now.

[0003] The Chinese invention patent with announcement number CN114739345B discloses a measuring device and method for the rolling surface modification curve of a large tapered roller. A high-precision auxiliary block is set on the end face of the tapered roller to be measured, and the auxiliary block and the tapered roller to be measured constitute a body to be measured. The auxiliary block is used to determine the rolling surface generatrix of the roller to be measured, the measurement starting point and other technical indicators. Finally, the profile data of the roller to be measured is collected and analyzed by a profiler, and the accuracy of the roller to be measured is evaluated. This technical solution uses high-precision auxiliary blocks and detection instruments to obtain more accurate geometric accuracy of the roller to be measured. However, the detection means of this technical solution has a high detection cost, and it is necessary to make a very accurate auxiliary block according to the geometric parameters of the roller to be measured, and it is necessary to use an expensive profiler to complete the detection; this solution is complicated to operate and the detection process is long, which cannot meet the requirements of rapid detection during mass production of rollers. Summary of the invention

[0004] The purpose of the present invention is to provide a roller geometry accuracy measuring device frame to solve the problem that the roller geometry accuracy measuring device in the prior art cannot perform roller geometry accuracy measurement quickly, with high accuracy and at low cost.

[0005] To achieve the above-mentioned purpose, the present invention provides a roller geometry accuracy measuring device frame, including a measuring base, on which an instrument assembly structure and a roller bearing structure are arranged, the instrument assembly structure and the roller bearing structure are arranged relative to each other in the transverse direction and can move relative to each other in the transverse direction, the roller bearing structure is configured to rotate around a longitudinal axis, the roller bearing structure is configured with a retaining structure for keeping the roller element line horizontal, and during the relative movement of the instrument assembly structure and the roller bearing structure, the measuring instrument can move back and forth along the roller element line.

[0006] Furthermore, the roller bearing structure is hinged on the measuring base.

[0007] Furthermore, the retaining structure is a group of pads with different heights, and the pads are used to be arranged on the measuring base and support the roller bearing structure. The roller bearing structure can be maintained at different angles by replacing different pads.

[0008] Furthermore, the cushion block is placed on a side away from the hinge axis of the roller bearing structure.

[0009] Furthermore, the instrument assembly structure has a probe for moving along the roller line and for transmitting with the measuring contact of the measuring instrument. The end of the probe in contact with the roller is a flat head structure, and the flat head surface of the probe is arranged perpendicular to the transverse axis to avoid errors caused by the offset of the roller line to be measured.

[0010] Furthermore, the instrument assembly structure includes a mounting column and a mounting bracket arranged on the mounting column, the mounting bracket having a mounting structure for vertically mounting the measuring instrument, and the mounting bracket also has a transmission arm hinged along the longitudinal axis, the transmission arm having a transmission end for contacting the measuring contact of the measuring instrument, and also having a detection end on which a probe directly contacting the roller element line is installed, the length of the detection end from the hinge axis is shorter than the length of the transmission end from the hinge axis, and the mounting bracket is provided with an elastic member for providing an upward elastic force to the transmission end of the transmission arm.

[0011] Furthermore, the mounting bracket includes a bracket body, the mounting structure is a detachable mounting structure arranged on the bracket body, and the mounting bracket also includes a mounting arm laterally cantilevered from the bracket body, the mounting arm is a U-shaped groove structure with an opening facing downward, a portion of the transmission arm is installed in the groove cavity of the U-shaped groove, and the hinge position of the transmission arm is at the end of the mounting arm.

[0012] Furthermore, the instrument assembly structure includes a movable base, and a linear movable structure is provided between the movable base and the measuring base to drive the movable base to move on the measuring base.

[0013] Furthermore, the roller bearing structure is provided with a V-shaped groove with a larger opening at one end close to the hinge axis of the roller bearing structure and a gradually smaller opening from this end to the end far away from the hinge axis of the roller bearing structure.

[0014] Beneficial effects: The present invention provides a roller geometry accuracy measuring device frame in a pioneering manner. After the measuring instrument is installed on the instrument assembly structure of the roller geometry accuracy measuring device frame, the instrument assembly structure and the roller bearing structure are placed on the measuring base opposite to each other and can generate relative movement; the angle of the roller bearing structure is adjusted according to the design angle of the element line of the roller to be measured, and the theoretical element line of the roller to be measured placed on the roller bearing structure is adjusted to be parallel to the horizontal plane; after the measuring instrument is installed on the instrument installation structure of the roller geometry accuracy measuring device frame, the instrument assembly structure is moved, and the contact of the measuring instrument is swept across the roller surface, and the geometric accuracy of the roller to be measured can be judged by the number displayed by the measuring instrument. Compared with the roller geometry accuracy measuring device of the prior art, the present device has a simple structure and is easy to operate, and solves the problems of high cost and slow detection speed of roller element line accuracy detection equipment in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the main view of the roller geometry accuracy measuring device frame when the measuring instrument is installed; Figure 2 It is a schematic diagram of the overall structure of the roller geometry accuracy measuring device frame when the measuring instrument is installed; Figure 3 It is a structural schematic diagram of the probe of the roller geometric accuracy measuring device frame; Figure 4 A schematic diagram of the structure of the instrument mounting bracket of the roller geometry accuracy measuring device; Figure 5 Bottom view of the instrument mounting bracket for the roller geometry accuracy measuring device; Figure 6 Top view of the instrument mounting bracket for the roller geometry accuracy measuring device stand.

[0016] In the figure: 1. measuring instrument, 2. mounting bracket, 201 bracket body, 2011. mounting through hole, 202. mounting arm, 2021. hinged shaft, 203. transmission arm, 2031. detection end, 204. elastic member, 205. contact contact, 2051. transmission end, 3. roller bearing structure, 301. rotating shaft, 302. V-groove, 4. probe, 401. flat head structure, 5. instrument assembly structure, 501. moving base, 502. mounting column, 6. measuring base, 601. linear moving structure, 602. hinged ear, 7. retaining structure. DETAILED DESCRIPTION

[0017] The features and performance of the present invention are further described in detail below in conjunction with the embodiments. The principle of the present invention is to place the roller to be tested on the roller bearing structure, first adjust the rotation angle of the roller bearing structure according to the design angle of the element line of the roller to be tested, adjust the theoretical element line of the roller to be tested to an angle parallel to the horizontal plane, and then use a measuring device to detect the element line of the roller, and observe the reading range of the detection instrument; rotate the roller to be tested, and detect multiple roller element lines. If multiple measurement results are within the qualified range, the accuracy of the roller to be tested meets the standard.

[0018] Based on the above concepts and principles, the present invention provides a roller geometry accuracy measuring device frame and various embodiments thereof for further explanation.

[0019] In a basic embodiment, Figure 1 , Figure 2 In the provided embodiment, the roller geometric accuracy measuring device frame includes a measuring base 6, the main body of the measuring base 6 is a long strip structure with a polygonal cross-section, and the upper surface of the measuring base 6 is provided with an instrument assembly structure 5 and a roller bearing structure 3 at intervals in its length direction, the instrument assembly structure 5 and the roller bearing structure 3 are arranged opposite to each other in the transverse direction and can move relative to each other in the transverse direction, the roller bearing structure 3 can rotate around the longitudinal axis, and the roller bearing structure 3 is provided with a retaining structure for keeping the roller element line horizontal, and the roller bearing structure 3 can be kept in a position where the theoretical element line of the roller to be measured is kept parallel to the horizontal plane through the retaining structure 7; in the process of relative movement of the instrument assembly structure 5 and the roller bearing structure 3, the measuring instrument 1 installed on the instrument assembly structure 5 moves back and forth along the roller element line, and whether the element line of the roller to be measured is horizontal is judged according to the indication of the measuring instrument 1, thereby judging the geometric accuracy of the roller to be measured.

[0020] Based on the above embodiments, in one embodiment, Figure 2 In the provided embodiment, the roller bearing structure 3 is hinged to the hinge ear 602 provided on the upper surface of the measuring base 6 near one end of the roller bearing structure 3 through the rotating shaft 301. After adjusting and fixing the roller bearing structure 3, the accuracy of the roller to be measured is measured. In another embodiment, the roller bearing structure 3 can be hinged to a movable base, and the instrument assembly structure 5 is fixed to the measuring base 6. The roller bearing structure 3 is moved to drive the element line of the roller to be measured to pass through the probe 4 to detect the element line accuracy of the roller to be measured.

[0021] Based on the above embodiments, in one embodiment, Figure 2In one embodiment provided, the holding structure 7 is a group of pads of different heights. The design element line angles of rollers of different models are consulted in advance, and the angle of the roller bearing structure 3 is adjusted to be the same as the design element line angle of the roller to be tested. At this time, the roller to be tested is placed on the roller bearing structure 3, and the theoretical element line of the roller to be tested can be adjusted to a state parallel to the horizontal plane. At this time, the height of the specific position of the roller bearing structure 3 away from the rotation axis 301 from the upper surface of the measuring base 6 is calculated. The obtained height value is the pad height that needs to be placed at the specific position to ensure that the theoretical element line is in a horizontal state when the roller to be tested and the rollers of the same model are tested. According to the multiple height values ​​calculated in the above steps, pads of different heights are prepared in advance. When dealing with rollers of different models to be tested, the pads at the specific position are replaced with pads adapted to another type of roller to be tested, and the precision test can be quickly carried out. In another embodiment, a mobile pad of fixed height is used as the holding structure 7, and the rotation angle of the roller bearing structure 3 is adjusted by controlling the distance of the mobile pad from the rotation axis 301.

[0022] Based on the above embodiments, in one embodiment, Figure 2 In the provided embodiment, the pad used as the holding structure 7 is placed on the upper surface of the measuring base 6 and at a specific position away from the hinge axis of the rotating shaft 301 .

[0023] Based on the above embodiment, in one embodiment, the instrument assembly structure 5 is provided with a probe 4 for moving along the roller element line to be measured and detecting its horizontal degree. The structure of the probe 4 can be a probe, and the tip of the probe directly abuts on the roller element line. In an optimized embodiment, as Figure 3 In the embodiment shown, in order to avoid the installation error of the roller bearing structure 3 causing the longitudinal displacement of the element line of the roller when it is placed on the roller bearing structure 3, and thus causing the measurement error caused by the tip of the probe 4 abutting the roller element line, the end of the probe 4 that contacts the roller to be measured is a flat head structure 401, and the flat head surface of the flat head structure 401 is arranged perpendicular to the transverse axis. In this way, even if the roller element line is longitudinally offset, the probe 4 can always fit the roller element line through the flat head structure 401 to ensure the accuracy of the measurement.

[0024] Based on the above embodiment, in one embodiment, the measuring instrument 1 assembled on the instrument assembly structure 5 is entirely located above the roller to be detected, and the contact of the measuring instrument 1 assembled on the instrument assembly structure 5 directly contacts the element line of the roller and performs detection. In a more preferred embodiment, as Figure 1 , Figure 5 and Figure 6In the provided embodiment, the instrument assembly structure 5 includes a mounting column 502 and a mounting bracket 2 arranged on the mounting column. The measuring instrument 1 is vertically mounted on the mounting bracket 2. A transmission arm 203 is also hinged on the mounting bracket 2 along the longitudinal axis. A contact contact 205 is arranged at one end of the transmission arm 203 and the contact contact 205 is in contact with the measuring contact of the measuring instrument 1. This end is the transmission end 2051. A probe 4 directly in contact with the roller element line is installed at the other end of the transmission arm 203. This end is the detection end 2031. An elastic member 204 for providing an upward elastic force to the transmission end of the transmission arm 203 is arranged on the mounting bracket 2. The elastic member 204 can keep the transmission end 2051 of the transmission arm 203 always pressed against the measuring contact of the measuring instrument 1. In this way, when the probe 4 installed on the detection end 2031 contacts the roller element line to be measured, it can also be kept pressed. In this way, when the roller to be measured and the probe 4 undergo lateral relative movement, the probe 4 can float up and down with the geometric changes of the roller element line to be measured. The length of the detection end 2031 from the articulated axis is shorter than the length of the transmission end 2051 from the articulated axis. The up and down floating of the probe 4 is transmitted to the measuring contact of the measuring instrument 1 through the transmission arm 203, thereby amplifying the floating amount and more accurately reflecting the geometric accuracy of the roller element line to be measured on the measuring instrument 1, thereby improving the accuracy of the detection.

[0025] Based on the above embodiments, in one embodiment, Figure 4 , Figure 5 In the provided embodiment, the mounting bracket 2 includes a bracket body 201, which is an arm body structure extending laterally, and mounting through holes 2011 are respectively provided at both ends of the arm body structure, one of which is used to fit with the mounting column 502, and the other is used to insert the measuring instrument 1. The mounting bracket 2 also includes a mounting arm 202 which is suspended laterally from the bracket body, and the mounting arm 202 is located at one end close to the measuring instrument 1. The mounting arm 202 is a U-shaped groove structure with an opening facing downward, and a part of the transmission arm 203 is installed in the groove cavity of the U-shaped groove, and the hinge shaft 2021 of the transmission arm 203 is located at the end of the mounting arm 202, and the other part is suspended outside the mounting arm 202. The mounting arm 202 with the U-shaped groove structure can cover part of the arm body of the transmission arm 203 inside, which plays a protective role. In another embodiment, the mounting arm 202 can be two parallel arms, one end of the two arms is connected to the bracket body, and the other end is provided with a hinge ear for hinged transmission arm 203.

[0026] On the basis of the above embodiments, in one embodiment, a slide groove or a slide rail is provided on the measuring base 6, and the instrument assembly structure 5 includes a mobile base 501, and the mobile base 501 moves along the slide groove or the slide rail, and the mobile base 501 is manually pushed to move during operation. In a more preferred embodiment, as Figure 1 , Figure 2 In the provided embodiment, the instrument assembly structure 5 includes a mobile base 501, a gear rack structure is provided between the mobile base 501 and the measuring base 6 as a linear moving structure 601, the rack is provided on the measuring base 6, the rotating gear drives the mobile base 501 to move on the measuring base 6, and the movement of the measuring base 6 can be made more stable and controllable by driving the mobile base to move by rotating the gear. In another embodiment, the linear moving structure 601 can also interchange the assembly positions of the gear rack, or use a lead screw nut mechanism as a linear moving structure, install the lead screw on the upper surface of the measuring base 6 along the length direction of the measuring base 6, and install the moving nut on the mobile base 501, and the purpose of smoothly moving the mobile base 501 can also be achieved by rotating the lead screw.

[0027] Based on the above embodiments, in one embodiment, a wedge block with a structural hole for the profile of the roller to be measured is used as the roller bearing structure 3, and the roller to be measured is positioned and carried through the structural hole. In an optimized embodiment, Figure 2 In one embodiment provided, a V-shaped groove 302 is provided on the roller bearing structure 3, which has a large opening at one end close to the rotating shaft 301 of the roller bearing structure 3 and gradually decreases from this end to the end of the rotating shaft 301 away from the roller bearing structure 3. The V-shaped groove 302 with gradually changing size can adapt to the size and shape of various rollers to be measured and position the rollers to be measured.

[0028] When a roller geometry accuracy measuring device frame provided by the present invention is used, the design parameters of the roller to be measured are first determined, and a pad of corresponding height is selected as a retaining structure 7 for adjusting the height of the roller bearing structure 3 according to the design parameters. After the height of the roller bearing structure 3 is set, the roller to be measured is placed in the V-groove of the roller bearing structure 3, the instrument assembly structure 5 is moved and the probe 4 is driven to cross the element line of the roller to be measured, and whether the element line of the roller to be measured is qualified is judged according to the indication of the measuring instrument 1. If the indication of the measuring instrument 1 has a value exceeding the tolerance range of the standard roller element line, it is judged that the geometry accuracy of the element line of the roller to be measured is unqualified; if the indications of the measuring instrument 1 are all within the tolerance range, the roller to be measured is rotated and tested again. If the indications of the measuring instrument 1 are all within the tolerance range in multiple tests, it is judged that the geometry accuracy of the element line of the roller to be measured is qualified.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A roller geometry accuracy measuring device frame, characterized in that: It includes a measuring base, on which an instrument assembly structure and a roller bearing structure are arranged. The instrument assembly structure and the roller bearing structure are arranged opposite to each other in the transverse direction and can move relative to each other in the transverse direction. The roller bearing structure is configured to rotate around the longitudinal axis. The roller bearing structure is configured to maintain the roller element line horizontally. During the relative movement of the instrument assembly structure and the roller bearing structure, the measuring instrument can move back and forth along the roller element line.

2. A roller geometry accuracy measuring device stand according to claim 1, characterized in that: The roller bearing structure is hinged on the measuring base.

3. A roller geometry accuracy measuring device stand according to claim 2, characterized in that: The retaining structure is a group of cushion blocks of different heights, which are used to be arranged on the measuring base and support the roller bearing structure. The roller bearing structure can be maintained at different angles by replacing different cushion blocks.

4. A roller geometry accuracy measuring device stand according to claim 3, characterized in that: The cushion block is placed on a side away from the hinge axis of the roller bearing structure.

5. A roller geometry accuracy measuring device stand according to any one of claims 1 to 4, characterized in that: The instrument assembly structure has a probe for moving along the roller element line and for transmitting with the measuring contact of the measuring instrument. The end of the probe in contact with the roller is a flat head structure, and the flat head surface of the probe is arranged perpendicular to the transverse axis to avoid errors caused by the deviation of the roller element line to be measured.

6. A roller geometry accuracy measuring device stand according to any one of claims 1 to 4, characterized in that: The instrument assembly structure includes a mounting column and a mounting bracket arranged on the mounting column. The mounting bracket has a mounting structure for vertically mounting the measuring instrument. The mounting bracket is also hinged with a transmission arm along the longitudinal axis. The transmission arm has a transmission end for contacting the measuring contact of the measuring instrument, and also has a detection end on which a probe is installed for directly contacting the roller element line. The length of the detection end from the hinge axis is shorter than the length of the transmission end from the hinge axis. The mounting bracket is configured with an elastic member for providing an upward elastic force to the transmission end of the transmission arm.

7. The roller geometry accuracy measuring device stand according to claim 6, characterized in that: The mounting bracket includes a bracket body, the mounting structure is a detachable mounting structure arranged on the bracket body, and the mounting bracket also includes a mounting arm laterally cantilevered from the bracket body, the mounting arm is a U-shaped groove structure with an opening facing downward, a part of the transmission arm is installed in the groove cavity of the U-shaped groove, and the hinge position of the transmission arm is at the end of the mounting arm.

8. A roller geometry accuracy measuring device stand according to any one of claims 1 to 4, characterized in that: The instrument assembly structure comprises a moving base, and a linear moving structure is arranged between the moving base and the measuring base to drive the moving base to move on the measuring base.

9. A roller geometry accuracy measuring device stand according to any one of claims 1 to 4, characterized in that: The roller bearing structure is provided with a V-shaped groove with a larger opening at one end close to the hinge axis of the roller bearing structure and a gradually smaller opening from the end to the end away from the hinge axis of the roller bearing structure.

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