A device for measuring and selecting preload gaskets for tapered bearing seats

Abstract

The present invention discloses a device for measuring and selecting the preload gasket of a tapered bearing seat, including an upper detection slide assembly, a control cabinet assembly, a frame assembly, a lower detection slide assembly, and a pneumatic control assembly. The control cabinet assembly is used to provide a weak current control system, and the pneumatic control assembly is used to control the cylinder to complete the required operation. The present invention can directly detect the thickness of the adjustment sleeve between the two tapered bearings in the bearing seat, reduce the labor intensity of the original manual measurement or indirect measurement, and accurately ensure the preload of the tapered bearing, ensure that the rotation torque is qualified, and prolong the service life of the bearing. The operation is simple and convenient, the equipment cost is low, and the qualified rate can be increased to 95%-98%; the detection process pressurizes the product bearing and detects the preload torque value and gasket thickness required by the current product.

Description

Technical Field

[0001] The invention relates to a device for measuring and selecting a preload force gasket of a tapered bearing seat. Background Art

[0002] The preload technology of tapered bearings has always been a difficult problem in the field of machinery. The characteristics of tapered bearings are that they can withstand both axial and radial forces. They are widely used in automobile transmission systems. However, the adjustment requirements of preload force of tapered bearings with different structures are also different. If the preload force adjustment is not qualified, it will cause eccentric wear of the bearings and affect the bearing life, indirectly causing oil seepage or leakage of the oil seal, and more seriously, it will cause the transmission gear to knock and cause gear damage;

[0003] The preload adjustment of tapered bearings is mostly done by adjusting the shim structure, such as Figure 6 As shown, there is an adjusting washer between the two tapered bearings. The required adjusting washer thickness can be selected through measurement and selection, and then the appropriate washer thickness can be selected from multiple specifications of adjusting washers.

[0004] The equipment currently used in the industry is manual selection or indirect selection using equipment; the pass rate of manual selection is low, about 40%, and the pass rate of indirect selection equipment is 80%, but the operation is more cumbersome and the equipment cost is higher. Summary of the invention

[0005] In order to solve the above technical problems, the purpose of the present invention is to provide a device for measuring and selecting preload gaskets of tapered bearing seats.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention discloses a device for measuring and selecting a preload gasket of a tapered bearing seat, comprising an upper detection slide assembly, a control electric cabinet assembly, a frame assembly, a lower detection slide assembly, and a pneumatic control assembly. The control electric cabinet assembly is used to provide a weak current control system, and the pneumatic control assembly is used to control a cylinder to complete a required operation.

[0008] The frame assembly includes a base, a column and the control cabinet assembly are sequentially arranged at one side of the base, a lower lifting cylinder and a lower supporting structure assembly are arranged at the other side of the base, a linear guide rail and a limit seat for limiting the position of the lower detection slide assembly are arranged on the column; a top plate is arranged on the top of the column away from the control cabinet assembly, and a servo electric cylinder is installed at the lower end of the top plate;

[0009] The upper detection slide assembly includes an upper box body arranged on the linear guide rail, an upper detection rod is arranged on the upper box body, an upper centering sleeve is installed at the lower end of the upper detection rod, a passive synchronous pulley is arranged on the outer peripheral side of the detection rod, the passive synchronous pulley drives the driving fork to move, the passive synchronous pulley is connected to the active synchronous pulley of the servo motor, and the servo motor also includes a dynamic torque sensor; the upper box body is driven by the servo electric cylinder and moves up and down along the linear guide rail;

[0010] The lower detection slide assembly includes a lower box body, a lower detection cylinder is arranged on the lower box body, the lower detection cylinder is connected to the lower detection rod, and a lower centering sleeve is arranged on the top of the lower detection rod; a lower cylinder joint for connecting with the lower lifting cylinder is also arranged on the lower box body; a lower sensor is arranged on the lower detection cylinder;

[0011] The lower supporting structure assembly includes a linear guide rail arranged on the base, a push-pull slide is provided on the linear guide rail through a guide rail slide adapter, the push-pull slide is connected to the push-pull cylinder through a connecting plate, a spring pressure sleeve with a spring is provided on the push-pull slide, and a lower supporting column is provided on the upper end of the spring pressure sleeve; the lower supporting structure assembly is used to support the lower detection slide assembly during the detection process to ensure stability during the detection process.

[0012] Furthermore, a plurality of adjustment feet are provided at the bottom of the base.

[0013] Furthermore, a lower supporting block is provided at the upper end of the lower supporting column.

[0014] Furthermore, it also includes an alarm device; the control cabinet component is also used to control and adjust the axial force borne by the tapered bearing according to the set assembly technical requirements, and receive the preload torque value and axial displacement of the tapered bearing detected by the torque sensor and the displacement sensor, and compare the detected preload torque value and axial displacement with the corresponding set preload torque value and set axial displacement respectively, and control the alarm device to sound an alarm when the preload torque value does not reach or exceed the set preload torque value and the axial displacement does not reach or exceed the set axial displacement.

[0015] Furthermore, it also includes a display device for displaying the applied set axial force and the detected preload torque value and axial displacement of the tapered bearing.

[0016] Compared with the prior art, the beneficial technical effects of the present invention are:

[0017] It can directly detect the thickness of the adjustment sleeve between the two tapered bearings in the bearing seat, reduce the labor intensity of the original manual measurement or indirect measurement, and accurately ensure the preload of the tapered bearing, ensure that the rotation torque is qualified, and prolong the service life of the bearing. The operation is simple and convenient, the equipment cost is low, and the qualified rate can be increased to 95%-98%. During the detection process, the product bearing is pressurized and the preload torque value and gasket thickness required for the current product are detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 A schematic diagram of the structure of a device for measuring and selecting a preload gasket for a tapered bearing seat provided in this embodiment;

[0020] Figure 2 A schematic diagram of the structure of a rack assembly provided in an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the structure of an upper detection slide assembly provided in an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the structure of a lower detection slide assembly provided in an embodiment of the present invention;

[0023] Figure 5 A front view of a lower support structure assembly provided by an embodiment of the present invention;

[0024] Figure 6 A side view of a lower support structure assembly provided by an embodiment of the present invention;

[0025] Figure 7 A schematic diagram of the structure of a bearing seat assembly to be tested provided in an embodiment of the present invention;

[0026] Explanation of the reference numerals: 1-upper detection slide assembly; 2-control cabinet assembly; 3-frame assembly; 4-lower detection slide assembly; 5-pneumatic control assembly; 6-servo electric cylinder; 7-top plate; 8-column; 9-first linear guide rail; 10-lower lifting cylinder; 11-lower support structure assembly; 12-base; 13-adjustment foot; 14-limit seat; 15-upper connecting rod; 16-upper box; 17-upper main shaft sleeve; 18-passive synchronous pulley; 19-upper sensor; 20-upper detection rod; 21-upper centering sleeve; 22-servo motor; 23-motor Torque sensor; 24-active synchronous pulley; 25-driving fork; 26-lower housing; 27-lower cylinder joint; 28-lower centering sleeve; 29-lower spindle sleeve; 30-lower detection rod; 31-lower sensor; 32-lower detection cylinder; 33-lower support block; 34-lower support column; 35-spring pressure sleeve; 36-spring; 37-push-pull cylinder; 38-second linear guide; 39-push-pull slide; 40-connecting plate; 41-guide rail slider; 42-workpiece bearing seat; 43-workpiece upper bearing; 44-workpiece pre-selection spacer; 45-workpiece lower bearing. DETAILED DESCRIPTION

[0027] like Figure 1 As shown, Figure 1 Shown is a schematic structural diagram of the tapered bearing seat preload gasket measuring and selecting device provided in this embodiment.

[0028] The tapered bearing seat preload gasket measuring and selecting device provided in this embodiment includes: an upper detection slide assembly 1, a control cabinet assembly 2, a frame assembly 3, a lower detection slide assembly 4, and a pneumatic control assembly 5, wherein the control cabinet assembly 4 provides a weak-current control system such as control software and electrical components for the equipment, and the pneumatic control assembly 5 provides a control component for the pneumatic actuator of the equipment to complete the required operation according to the output of the weak-current system software.

[0029] like Figure 2 As shown, Figure 2 A schematic diagram of the structure of the rack assembly provided in this embodiment.

[0030] The rack assembly 3 provided in this embodiment includes:

[0031] The servo electric cylinder 6 is installed on the top plate 7, the column 8 is assembled between the base 12 and the top plate 7, the first linear guide rail 9 is installed in the guide rail mounting groove on the column 8, the lower lifting cylinder 10, the lower support structure assembly 11; the adjustment foot 13 is used for equipment adjustment, and the limit seat 14 is used to detect the height limit of the slide table;

[0032] like Figure 3The upper detection slide assembly 1 includes: an upper connecting rod 15, an upper box 16, an upper main shaft sleeve 17, a passive synchronous pulley 18, an upper sensor 19, an upper detection rod 20, an upper centering sleeve 21, a servo motor 22, a dynamic torque sensor 23, an active synchronous pulley 24, and a driving fork 25. The upper connecting rod 15 is responsible for connecting the cylinder rod of the servo electric cylinder 6 and the upper box 16 to transmit the downward pressure.

[0033] like Figure 4 As shown, Figure 4 A schematic diagram of the structure of the lower detection slide assembly 4 provided in this embodiment;

[0034] The lower detection slide assembly 4 provided in this embodiment includes: a lower box body 26, a lower cylinder joint 27, a lower centering sleeve 28, a lower main shaft sleeve 29, a lower detection rod 30, a lower sensor 31, and a lower detection cylinder 32;

[0035] Preferably, the middle and lower lifting cylinders 10 are used to lift the lower detection slide assembly 4 as a whole to meet the detection requirements.

[0036] like Figure 5 and 6 As shown, Figure 5 and 6 A schematic structural diagram of the lower support structure assembly 11 provided in this embodiment;

[0037] The lower support structure assembly 11 provided in this embodiment includes: a lower support block 33, a lower support column 34, a spring compression sleeve 35, a spring 36, a push-pull cylinder 37, a second linear guide rail 38, a push-pull slide 39, a connecting plate 40, and a guide rail slider 41. The lower support structure assembly 11 is mainly used to support the lower detection slide assembly 4 during the detection process to ensure stability during the detection process. When the lower detection slide assembly 4 falls, the push-pull cylinder 37 pushes the push-pull slide 39 to both sides to avoid the lower detection slide assembly 4. The support is only provided during the detection process;

[0038] like Figure 7 As shown, Figure 7 A schematic diagram of the structure of the workpiece assembly to be inspected provided in this embodiment.

[0039] The workpiece assembly to be inspected provided in this embodiment includes: a workpiece bearing seat 42, a workpiece upper bearing 43, a workpiece pre-selected spacer 44, and a workpiece lower bearing 45. It mainly describes the customer product structure to be inspected, and the workpiece pre-selected spacer 44 in this product structure is inspected and selected. During the inspection process, the workpiece upper bearing 43 and the workpiece lower bearing 45 will both generate a certain preload force, and the workpiece is inspected and selected for the spacer under the condition of qualified preload force;

[0040] In the above technical solution, the action process of the cone bearing seat preload gasket measuring and selecting device during measurement is as follows:

[0041] The lower lifting cylinder 10 lifts the lower inspection slide assembly 4, and the workpiece lower bearing 45, workpiece bearing seat 42, and workpiece upper bearing 43 of the workpiece to be inspected are manually placed on the lower centering sleeve 28 in the lower inspection slide assembly 4 for centering. The push-pull cylinder 37 in the lower support structure assembly 11 transports the push-pull slide 39 together with the lower support block 33, the lower support column 34, the spring compression sleeve 35, and the spring 36 along the second linear guide rail 38 to the bottom of the lower inspection slide assembly 4, and the lower inspection slide assembly 4 falls and is supported by the lower support structure assembly 11.

[0042] The upper detection slide assembly 1 is pressed down along the first linear guide rail 9 and the pressure parameters are adjustable by the servo electric cylinder 6. The servo motor 22 drives the rotation to drive the dynamic torque sensor 23, the active synchronous pulley 24, the passive synchronous pulley 18, and the driving fork 25 to rotate and drive the workpiece bearing seat 42 to rotate. The rotational torque is detected while pressing down. When the rotational torque reaches the parameter requirement, the preload is considered to be qualified. At this time, the upper sensor 19 transmits the upper detection displacement through the upper detection rod 20, and the lower displacement is detected by the lower detection rod 30 and the lower sensor 31; thereby obtaining the preselected thickness value of the spacer sleeve.

[0043] The circuit structure and the specific structure of the control circuit involved in the present invention are conventional technical means in the field and need not be elaborated here.

[0044] It was sent to the production site in May 2019 and has been verified in practice at the production site. The specific results are as follows:

[0045] After three months of continuous use on site, the first pass rate can reach 98%, which is higher than the technical indicator;

[0046] The equipment detection accuracy can reach within 0.005mm after repeated detection of the same workpiece 30 times;

[0047] Currently, the invention is compatible with a variety of products, and the tooling time for changing products can be completed within 1 minute;

[0048] The equipment can be integrated with online detection or off-line detection equipment, which is convenient for production arrangement;

[0049] The operating height of the equipment is 950mm, which is ergonomic and easy to operate.

[0050] Detection principle: The absolute measurement method is adopted to directly use the displacement sensor to measure the gap value generated by the measuring tool in the workpiece, and then the gap value is added to the reference thickness value of the tooling measuring surface to obtain the final pre-selected spacer value; during the measurement process, the upper slide is pressed by the servo electric cylinder, and the pressure can be adjusted between 50-950 kg according to the product requirements. The test workpiece is positioned on the lower detection slide, and the upper slide moves down until the workpiece bearing seat generates a qualified torque, and then the upper slide stops pressing down. The upper slide detection cylinder outputs the ejection detection tooling to detect the dynamic gap and calculate the theoretical spacer value, thereby achieving the effect of gasket selection.

[0051] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A device for measuring and selecting preload gaskets for tapered bearing seats, characterized in that: It includes an upper detection slide assembly, a control cabinet assembly, a frame assembly, a lower detection slide assembly, and a pneumatic control assembly. The control cabinet assembly is used to provide a weak current control system, and the pneumatic control assembly is used to control the cylinder to complete the required operation; The frame assembly includes a base, a column and the control cabinet assembly are sequentially arranged at one side of the base, a lower lifting cylinder and a lower supporting structure assembly are arranged at the other side of the base, a linear guide rail and a limit seat for limiting the position of the lower detection slide assembly are arranged on the column; a top plate is arranged on the top of the column away from the control cabinet assembly, and a servo electric cylinder is installed at the lower end of the top plate; The upper detection slide assembly includes an upper box body arranged on the linear guide rail, an upper detection rod is arranged on the upper box body, an upper centering sleeve is installed at the lower end of the upper detection rod, a passive synchronous pulley is arranged on the outer peripheral side of the detection rod, the passive synchronous pulley drives the driving fork to move, the passive synchronous pulley is connected to the active synchronous pulley of the servo motor, and the servo motor also includes a dynamic torque sensor; the upper box body is driven by the servo electric cylinder and moves up and down along the linear guide rail; The lower detection slide assembly includes a lower box body, a lower detection cylinder is arranged on the lower box body, the lower detection cylinder is connected to the lower detection rod, and a lower centering sleeve is arranged on the top of the lower detection rod; a lower cylinder joint for connecting with the lower lifting cylinder is also arranged on the lower box body; a lower sensor is arranged on the lower detection cylinder; The lower supporting structure assembly includes a linear guide rail arranged on the base, a push-pull slide is provided on the linear guide rail through a guide rail slide adapter, the push-pull slide is connected to the push-pull cylinder through a connecting plate, a spring pressure sleeve with a spring is provided on the push-pull slide, and a lower supporting column is provided on the upper end of the spring pressure sleeve; the lower supporting structure assembly is used to support the lower detection slide assembly during the detection process to ensure stability during the detection process.

2. The device for measuring and selecting the preload gasket of a tapered bearing seat according to claim 1, characterized in that: A plurality of adjusting feet are arranged at the bottom of the base.

3. The device for measuring and selecting preload gaskets for tapered bearing seats according to claim 1, characterized in that: A lower supporting block is arranged at the upper end of the lower supporting column.

4. The device for measuring and selecting preload gaskets for tapered bearing seats according to claim 1, characterized in that: It also includes an alarm device; the control cabinet assembly is also used to control and adjust the axial force borne by the tapered bearing according to the set assembly technical requirements, and receive the preload torque value and axial displacement of the tapered bearing detected by the torque sensor and the displacement sensor, and compare the detected preload torque value and axial displacement with the corresponding set preload torque value and the set axial displacement respectively, and control the alarm device to sound an alarm when the preload torque value does not reach or exceed the set preload torque value and the axial displacement does not reach or exceed the set axial displacement.

5. The device for measuring and selecting preload gaskets for tapered bearing seats according to claim 4, characterized in that: It also includes a display device for displaying the applied set axial force and the detected preload torque value and axial displacement of the tapered bearing.

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