Hub bearing site spacing measuring device

Abstract

This invention discloses a wheel hub bearing position spacing measuring device, belonging to the field of measurement technology. It includes a frame, a measuring platform, a transverse pallet, an upper clamping and positioning mechanism, and a lower lifting measuring mechanism. The measuring platform is mounted on the frame and is equipped with a limit baffle and a trackless cylinder. The transverse pallet is mounted on the trackless cylinder. The upper clamping and positioning mechanism and the lower lifting measuring mechanism are mounted opposite each other above and below the measuring platform. The clamping cylinder of the upper clamping and positioning mechanism is mounted on an upper mounting plate and is connected to the upper clamping fixture via a floating joint. The self-locking cylinder of the lower lifting measuring mechanism is mounted below the lower mounting plate, and the measuring head is mounted in the middle of the measuring head mounting plate. This invention solves the problems of low detection efficiency, susceptibility to human error, and large errors in existing wheel hub bearing position spacing measurement technologies.

Description

Technical Field

[0001] This invention relates to the field of metrology and testing equipment, and in particular to a measuring tool for measuring the spacing between bearing seats in automobile wheel hubs. Background Technology

[0002] A wheel hub is a cylindrical component mounted on a car axle and located within the tire's inner contour to support it. After the wheel hub is manufactured, the distance between the inner and outer bearing mounting faces needs to be measured. Current inspection techniques involve manual measurement with a micrometer, followed by manual data recording. This method is inefficient, susceptible to human error, and prone to significant inaccuracies. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a wheel hub bearing position spacing measuring device, which can solve the problems of low detection efficiency, susceptibility to human influence, and large error in the existing wheel hub bearing position spacing measuring technology.

[0004] To solve the above problems, the technical solution of the present invention is as follows: This wheel hub bearing position spacing measuring device includes a frame, a measuring platform, a transverse pallet, an upper clamping and positioning mechanism, and a lower lifting and measuring mechanism; the measuring platform is installed on the top of the frame, and limit baffles are provided on the left and right sides of the measuring platform, with limit screws provided on the limit baffles; trackless cylinders are arranged side by side on the front and rear sides of the measuring platform, and the transverse pallet is installed on the trackless cylinders and moves with the movement of the trackless cylinders;

[0005] The upper clamping and positioning mechanism is installed on the upper left side of the measuring platform; the upper clamping and positioning mechanism includes an upper mounting plate, a clamping cylinder, a clamping guide rod, and a transition block mounting plate; the cylinder seat of the clamping cylinder is fixedly installed on the upper mounting plate, and upper linear bearings are provided on the upper mounting plates on both sides of the clamping cylinder; one end of the clamping guide rod is installed on the transition block mounting plate, and the other end passes through the upper linear bearing, serving as a guide for the transition block mounting plate; the transition block is installed on the transition block mounting plate, the piston rod of the clamping cylinder is connected to the transition block, the transition block is equipped with a floating joint, and the floating joint is connected to the upper clamping fixture;

[0006] The lower lifting and measuring mechanism is installed on the lower left side of the measuring platform; the lower lifting and measuring mechanism includes a measuring head, a lower mounting plate, a self-locking cylinder, a measuring head guide rod, and a measuring head mounting plate; the cylinder seat of the self-locking cylinder is fixedly installed under the lower mounting plate, and lower linear bearings are provided on the lower mounting plate on both sides of the self-locking cylinder; one end of the measuring head guide rod is installed on the measuring head mounting plate, and the other end passes through the lower linear bearing, serving to guide the measuring head mounting plate; the measuring head is fixedly installed in the middle of the measuring head mounting plate.

[0007] A more specific embodiment of the above technical solution is as follows: The measuring head includes a measuring head mounting base, a sensor mounting base, a displacement sensor, a measuring head housing, a push rod, and a pressing head; the measuring head mounting base is mounted on the measuring head mounting plate, and the upper end of the measuring head mounting base is connected to the sensor mounting base; the displacement sensor is mounted on the sensor mounting base, with one end extending into the inner cavity of the measuring head mounting base and the other end abutting against the bottom end of the push rod; the measuring head housing is fitted over the push rod, and the pressing head is fitted over the measuring head housing, with one end of the pressing head connected to the sensor mounting base; a measuring head linear bearing is provided at the upper part between the push rod and the measuring head housing, the push rod passes through the measuring head linear bearing and extends out of the pressing head, a spring is fitted at the bottom of the push rod, and a bushing is provided outside the spring.

[0008] Furthermore, the transverse pallet is equipped with four hub support columns for supporting the hub to be measured.

[0009] Furthermore: the upper clamping and positioning mechanism is fixedly installed on the upper left side of the measuring platform by four support columns; on the measuring platform; the lower lifting and measuring mechanism is fixedly installed on the lower left side of the measuring platform by four support columns.

[0010] Furthermore, a limit block is provided at the end of the measuring head guide rod.

[0011] Furthermore, the frame base is equipped with casters with brakes at its four corners.

[0012] Furthermore, the frame and the upper clamping and positioning mechanism are provided with a surrounding frame and a door frame on three sides.

[0013] By adopting the above technical solution, the present invention has the following advantages compared with the prior art:

[0014] 1. The present invention has a simple structure, improves the automation, reliability and stability of production, has high production efficiency, low cost, high safety, and greatly reduces the labor intensity of operators.

[0015] 2. This invention can be directly applied to wheel hub processing production lines because of its low cost, high returns, broad market prospects, and good economic benefits.

[0016] 3. This invention can automatically detect the spacing between wheel hub bearing positions, thereby improving the level of automation.

[0017] 4. This invention reduces equipment procurement costs: The equipment costs only about 60,000 yuan, and the operator's employment cost is 120,000 yuan per year, which greatly reduces labor costs. At the same time, it strengthens the upgrading of enterprise technology, accelerates the development prospects of the enterprise, and improves social competitiveness. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall invention;

[0019] Figure 2 This is a schematic diagram showing the connections between the various mechanisms of the present invention;

[0020] Figure 3 This is a schematic diagram of the upper pressing and positioning mechanism of the present invention;

[0021] Figure 4 This is a schematic diagram of the lifting and measuring mechanism below the present invention;

[0022] Figure 5 This is a schematic diagram of the measuring head structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the working state of the present invention.

[0024] The labels in the diagram are as follows:

[0025] 1-Push rod; 2-Lower pressure head; 3-Measuring head housing; 4-Measuring head linear bearing; 5-Bushing; 6-Spring; 7-Sensor mounting base; 8-Measuring head mounting base; 9-Displacement sensor; 10-Measuring head mounting plate; 11-Measuring head guide rod; 12-Lower mounting plate; 13-Lower linear bearing; 14-Limit block; 15-Self-locking cylinder; 16-Clamping cylinder; 17-Clamping guide rod; 18-Upper linear bearing; 19-Adapter block mounting plate; 20-Adapter block; 21-Floating joint; 22-Upper clamping fixture; 23-Transverse pallet; 24-Hub support column; 25-Limit baffle; 26-Trackless cylinder; 27-Frame; 28-Measuring platform; 29-Upper mounting plate; 30-Enclosure frame; 31-Universal wheel; 32-Hub. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0027] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The wheel hub bearing position spacing measuring device includes a frame 27, a measuring platform 28, a transverse pallet 23, an upper clamping and positioning mechanism, and a lower lifting and measuring mechanism.

[0028] The measuring platform 28 is installed on the top of the frame 27. Limiting baffles 25 are set on the left and right sides of the measuring platform 28, and limiting screws are set on the limiting baffles 25. The positioning position of the transverse pallet 23 is adjusted by adjusting the limiting screws. Trackless cylinders 26 are arranged side by side on the front and rear sides of the measuring platform 28. The transverse pallet 23 is installed on the trackless cylinders 26 and moves with the movement of the trackless cylinders 26. Four wheel hub support columns 24 are installed on the transverse pallet 23 to support and fix the wheel hub 32 to be measured. During measurement, the wheel hub is placed on the support columns on the transverse pallet. The trackless cylinders drive the transverse pallet to move, which in turn drives the wheel hub on the transverse pallet to move to the designated position.

[0029] The upper clamping and positioning mechanism is installed on the upper left side of the measuring platform 28 and is fixed to the measuring platform 28 by four support columns; as Figure 3 As shown, the upper clamping and positioning mechanism includes an upper mounting plate 29 connected to four corners and four support columns, a clamping cylinder 16, a clamping guide rod 17, and a transition block mounting plate 19. The cylinder seat of the clamping cylinder 16 is fixedly mounted on the upper mounting plate 29. Two linear bearings, namely upper linear bearings 18, are symmetrically arranged on the upper mounting plate 29 on both sides of the clamping cylinder 16. One end of the clamping guide rod 17 is mounted on the transition block mounting plate 19, and the other end passes through the upper linear bearing 18 to guide the transition block mounting plate 19. The transition block 20 is installed in the middle of the transition block mounting plate 19. The piston rod of the clamping cylinder 16 is connected to the transition block 20. A floating joint 21 is installed at the lower part of the transition block 20. The floating joint 21 can be selectively connected to the required upper clamping fixture 22, such as a pressure head.

[0030] The lower lifting and measuring mechanism is installed on the lower left side of the measuring platform 28 and is fixedly connected to the measuring platform 28 by four support columns; as follows: Figure 4 As shown, the lower lifting and measuring mechanism includes a measuring head, a lower mounting plate 12 connected to four corners and four support columns, a self-locking cylinder 15, a measuring head guide rod 11, and a measuring head mounting plate 10. The cylinder seat of the self-locking cylinder 15 is fixedly installed under the lower mounting plate 12. Two linear bearings, namely lower linear bearings 13, are symmetrically arranged on the lower mounting plate 12 on both sides of the self-locking cylinder 15. One end of the measuring head guide rod 11 is installed on the measuring head mounting plate 10, and the other end passes through the lower linear bearing 13 to guide the measuring head mounting plate 10. A limit block 14 is provided at the end of the measuring head guide rod 11. The measuring head is fixedly installed in the middle of the measuring head mounting plate 10, as shown in the figure. Figure 5 As shown, the measuring head includes a measuring head mounting base 8, a sensor mounting base 7, a displacement sensor 9, a measuring head housing 3, a push rod 1, and a pressing head 2;

[0031] The lower end of the measuring head mounting base 8 is mounted on the measuring head mounting plate 10, and the upper end of the measuring head mounting base 8 is connected to the sensor mounting base 7. The displacement sensor 9 is mounted on the sensor mounting base 7, with one end extending into the inner cavity of the measuring head mounting base 8 and the other end abutting against the bottom end of the push rod 1. The push rod 1 is fitted with a measuring head housing 3, and the measuring head housing 3 is fitted with a pressing head 2. One end of the pressing head 2 is connected to the sensor mounting base 7. A linear bearing, namely the measuring head linear bearing 4, is provided at the upper part between the push rod 1 and the measuring head housing 3. The push rod 1 is inserted into the measuring head linear bearing 4 and extends out of the pressing head 2. A spring 6 is fitted at the bottom of the push rod 1, and a bushing 5 is provided outside the spring 6. The spring 6 is a compression spring. The entire measuring head is directly facing the upper pressing fixture 22 of the upper pressing and positioning mechanism. The self-locking cylinder 15 extends and retracts, causing the measuring head to extend over the measuring platform 28 or retract into the measuring platform 28 to move up and down. After moving to the designated position, it automatically locks.

[0032] like Figure 1 , Figure 2 and Figure 6 As shown, for easy movement, casters 31 with brakes are installed at the four corners of the base of the frame 27. To ensure safety and cleanliness, a frame 30 and / or a door frame are provided around the frame 27 and on the three sides of the clamping and positioning mechanism.

[0033] like Figure 6 As shown, the working principle and basic steps of this invention are as follows:

[0034] 1) The robot places the wheel hub on the positioning tray, the sensor sends a signal, and the transverse cylinder drives the positioning tray to move to the right;

[0035] 2) After the positioning tray reaches the designated position, the sensor sends a signal, and the self-locking cylinder below extends, driving the pressing head and measuring head to move upward. The plane of the pressing head contacts the mounting end face of the outer bearing of the wheel hub, thereby lifting the wheel hub. After reaching the designated position, the cylinder locks.

[0036] 3) After the lower self-locking cylinder completes its action, the upper cylinder extends, driving the upper pressure head to move downward. The plane of the upper pressure head contacts the bearing mounting end face inside the hub, thereby achieving the clamping and positioning of the workpiece.

[0037] 4) During the process of the upper pressure head plane contacting the wheel hub bearing mounting end face, the upper pressure head will squeeze the push rod of the lower measuring head. The push rod moves and thus drives the displacement sensor to move, and then the distance between the bearing mounting end faces is calculated by the displacement.

[0038] In this invention, unless otherwise stated, the directional terms such as "both sides," "up and down," "left and right," "front and back," and "top and bottom" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and to distinguish the names of the same structure, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention. The directional terms of this invention should be understood in conjunction with the actual installation state.

Claims

1. A device for measuring the distance between wheel hub bearing positions, characterized in that: The system includes a frame (27), a measuring platform (28), a transverse pallet (23), an upper clamping and positioning mechanism, and a lower lifting and measuring mechanism. The measuring platform (28) is installed on the top of the frame (27), and limit baffles (25) are provided on the left and right sides of the measuring platform (28). Limiting screws are provided on the limit baffles (25). Trackless cylinders (26) are provided on the front and rear sides of the measuring platform (28), and the transverse pallet (23) is installed on the trackless cylinders (26). The upper clamping and positioning mechanism is installed on the measuring platform (28); the upper clamping and positioning mechanism includes an upper mounting plate (29), a clamping cylinder (16), a clamping guide rod (17), and a transition block mounting plate (19); the cylinder seat of the clamping cylinder (16) is fixedly installed on the upper mounting plate (29), and upper linear bearings (18) are provided on the upper mounting plates (29) on both sides of the clamping cylinder (16); one end of the clamping guide rod (17) is installed on the transition block mounting plate (19), and the other end passes through the upper linear bearing (18); the transition block (20) is installed on the transition block mounting plate (19), the piston rod of the clamping cylinder (16) is connected to the transition block (20), the transition block (20) is equipped with a floating joint (21), and the floating joint (21) is connected to the upper clamping fixture (22). The lower lifting measuring mechanism is installed below the measuring platform (28); the lower lifting measuring mechanism includes a measuring head, a lower mounting plate (12), a self-locking cylinder (15), a measuring head guide rod (11), and a measuring head mounting plate (10); the cylinder seat of the self-locking cylinder (15) is fixedly installed below the lower mounting plate (12), and lower linear bearings (13) are provided on the lower mounting plate (12) on both sides of the self-locking cylinder (15); one end of the measuring head guide rod (11) is installed on the measuring head mounting plate (10), and the other end passes through the lower linear bearing (13); the measuring head is fixedly installed in the middle of the measuring head mounting plate (10); the measuring head includes a measuring head mounting base (8), a sensor mounting base (7), a displacement sensor (9), a measuring head housing (3), a push rod (1), and a lower pressure head (2); the measuring head mounting base (8) is fixedly installed below the measuring platform (28); the measuring head mounting base (12) is fixedly installed below the measuring platform (28); the lower lifting measuring mechanism includes a measuring head mounting base (8), a sensor mounting base (7), a displacement sensor (9), a measuring head housing (3), a push rod (1), and a lower pressure head (2 ... The mounting base (8) is installed on the measuring head mounting plate (10), and the upper end of the measuring head mounting base (8) is connected to the sensor mounting base (7); the displacement sensor (9) is installed on the sensor mounting base (7), one end of which extends into the inner cavity of the measuring head mounting base (8), and the other end abuts against the bottom end of the push rod (1); the measuring head shell (3) is fitted on the outside of the push rod (1), and the lower pressure head (2) is fitted on the outside of the measuring head shell (3), and one end of the lower pressure head (2) is connected to the sensor mounting base (7); between the push rod (1) and the measuring head shell (3), a measuring head linear bearing (4) is provided at the upper part, the push rod (1) is inserted into the measuring head linear bearing (4) and extends out of the lower pressure head (2), and a spring (6) is fitted at the bottom of the push rod (1), and a bushing (5) is provided on the outside of the spring (6).

2. The wheel hub bearing seat spacing measuring device according to claim 1, characterized in that: The transverse pallet (23) is equipped with four hub support columns (24) for supporting the hub (32) to be measured.

3. The wheel hub bearing seat spacing measuring device according to claim 1 or 2, characterized in that: The upper pressing and positioning mechanism is fixedly installed on the upper left side of the measuring platform (28) by four support columns; the lower lifting and measuring mechanism is fixedly installed on the lower left side of the measuring platform (28) by four support columns.

4. The wheel hub bearing seat spacing measuring device according to claim 3, characterized in that: A limit block (14) is provided at the end of the measuring head guide rod (11).

5. The wheel hub bearing seat spacing measuring device according to claim 4, characterized in that: The frame (27) base is equipped with casters (31) with brake devices at the four corners.

6. The wheel hub bearing seat spacing measuring device according to claim 5, characterized in that: The frame (27) is surrounded by a frame (30) and a door frame on three sides, including the upper clamping and positioning mechanism.

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