KR101977230B1 - Torque tester of axle cv - Google Patents

Abstract

The present invention relates to a torque test device for a CV axle assembly. According to the present invention, a CV axle assembly includes: an inner race formed in a housing having a driving shaft unit; a ball bearing installed between the housing and the inner race; and a cage accommodating the ball bearing. The torque test device for a CV axle assembly includes: a spline zig directly connected to the CV axle assembly; a rotating check unit installed at a lower end of the spline zig and connected to the spline zig in order for the spline zig to rotate, wherein the rotating check unit checks rotating torque of the inner race on the driving shaft unit and the housing of the CV axle assembly through a first torque cell unit; and a tilting check unit vertically installed on a virtual axial center of the driving shaft unit and installed to approach and is separated from the spline zig, wherein the tilting check unit checks tilting torque of the inner race on the housing of the CV axle assembly through a second torque cell unit at same time when the rotating check unit is activated or by being operated in order. According to the present invention, the torque test device for a CV axle assembly fixes the CV axle assembly onto the spline zig and inspects the rotating torque by the rotating check unit. At the same time or in consecutive order, the torque test device for a CV axle assembly can check the tilting torque as a tilting handle is inserted. So, the torque test device for a CV axle assembly can accurately determine a product with good quality by satisfying a product specification required by a client company. Moreover, the torque test device for a CV axle assembly can perform a test of a CV axle in various vehicle kinds by replacing only the tilting handle and the spline zig and can reduce test costs and test time. So, the torque test device for a CV axle assembly can generally improve productivity of a CV axle.

Description

TORQUE TESTER OF AXLE CV < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a torque test apparatus for a CV axle assembly, and more particularly, to a torque test apparatus for a CV axle assembly which is compatible with various CV axle sizes and can easily and accurately check the rotation and tilting torque.

Generally, the power of the vehicle is generated from the engine and transmitted to the drive wheels through the automobile and the constant velocity joint. At this time, the power is distributed by the pair of constant velocity joints.

Constant Velocity joint (CV joint) is a joint that transmits the power at the constant speed by making the contact points of two axes on the bisector of the intersection angle of the axes without the fluctuation of the rotational speed in the power transmission between the drive shaft and the driven shaft. It can be used for power transmission parts.

The constant velocity joint may consist largely of a CV axle, a power shaft connected to one end of the CV axle, a power transmission shaft connected to the other end, and a boot surrounding the CV axle, An inner race within the housing, a ball bearing that is rollably interposed between the housing and the inner race, and a cage that partially receives the ball bearing.

The role of the CV axle is to transmit the rotation of the power shaft to the power transmission shaft (or in the reverse direction), and to tilt the power transmission shaft within a predetermined angular range of the power transmission shaft.

Conventionally, various CV axle inspection apparatuses have been disclosed. For example, a device for measuring the axial force of a CV axle has been patented (10-2011-0108601).

However, there is a problem that the rotating torque and the tilting torque required by the customer for the CV axle in which various parts are assembled can not be measured and inspected together in one test device, and the good product and the defective product can not be discriminated.

In addition, since the test apparatus can not be provided corresponding to the CV axles of various types of vehicles, the test cost and time are increased by replacing the test equipment according to the CV axle, and the productivity of the CV axle is lowered as a whole.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems, and it is an object of the present invention to provide a CV axle assembly that fixes a CV axle assembly on a spline jig, checks a rotating torque by a rotation checking unit, or sequentially inserts a tilting handle, It satisfies the product specifications required by the customer and can accurately identify good products. By replacing only the spline jig and tilting handle, it is possible to test various types of CV axles, thus saving test cost and time, Provided is a CV axle assembly torque tester capable of increasing the productivity of the axle.

In order to accomplish the above object, the present invention provides a torque test apparatus for a CV axle assembly, comprising: a housing in which a drive shaft is formed; an inner race; a ball bearing interposed between the housing and the inner race; and a cage accommodating the ball bearing A spline zig to which the CV axle assembly is directly connected; A rotating check unit provided at a lower end of the spline jig and rotatably coupled to the spline jig to check the rotating torque of the inner race against the housing and the drive shaft of the CV axle assembly through the first torque cell unit; And a control unit that is disposed to be perpendicular to a virtual axis formed by the drive shaft and is provided so as to approach and separate from the spline jig, wherein the rotating check unit is activated simultaneously or sequentially to rotate the CV axle through the second torque- And a tilting check unit for checking the tilting torque of the inner race with respect to the housing of the assembly.

Wherein the tilting check unit comprises: a tilting power unit including a first servo motor, at least one speed reducer connected to the first servo motor, a load balancer, and at least one pair of gears; And a probe portion which is constrained to the inner race so that the rotating torque and the tilting torque are checked.

Wherein the tilting check unit comprises: an up-down driving unit for up-down driving the tilting power unit and the probe unit; And an LM guide unit which is moved up / down by a driving operation of the up-down driving unit.

Wherein the probe unit includes: a bending frame connected to the tilting power unit; A tilting handle provided in the bending frame and operated downward according to an operation of the up-down driving unit to be forcedly engaged with the inner race; And an alignment casing arranged adjacent to the tilting handle to align the CV axle assembly when checking the tilting torque.

The up-down driving unit may be a second servo motor.

The rotation checking unit includes a third servo motor, at least one speed reducer connected to the third servo motor, a load balancer, and a rotating power unit including at least a pair of pulleys; And a jig holder to which the spline jig is coupled.

And a bearing check unit for checking the number of ball bearings of the CV axle assembly.

The bearing check unit may include a detection sensor provided on the probe unit.

The CV axle assembly torque test apparatus according to the present invention is capable of checking a tilting torque by inserting a tilting handle sequentially or simultaneously with fixing a CV axle assembly on a spline jig and checking a rotating torque with a rotating checking unit It satisfies the product specifications required by the customer and can accurately identify good products. By replacing only the spline jig and tilting handle, it is possible to test various types of CV axles, saving test cost and time, Can be increased.

1 is a schematic cross-sectional view of a CV axle for constant velocity joint according to an embodiment of the present invention.
2 is a front view of a CV axle assembly torque test apparatus according to an embodiment of the present invention.
3 is a side view of a CV axle assembly torque test apparatus according to an embodiment of the present invention.
Figure 4 is a schematic side view of the probe portion in Figure 3;
Figure 5 is a schematic front view of the tilting check unit in Figure 2;
6 is a view illustrating a state in which a rotating torque of a CV axle assembly is measured through a rotating check unit in a CV axle assembly torque test apparatus according to an embodiment of the present invention.
7 is a view showing a state in which the tilting torque of the CV axle assembly is measured through the tilting check unit in the CV axle assembly torque test apparatus according to the embodiment of the present invention.
8 is a view showing a spline jig in a CV axle assembly torque test apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a torque test apparatus for a CV axle assembly according to the present invention will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

2 is a front view of a CV axle assembly torque test apparatus according to an embodiment of the present invention, and Fig. 3 is a front view of a CV axle for a constant velocity joint according to an embodiment of the present invention. Fig. 5 is a schematic front view of the tilting check unit in Fig. 2. Fig. 5 is a side elevational view of the CV axle assembly torque test apparatus according to the present invention. Fig.

1 to 5, the CV axle assembly torque test apparatus according to the present invention includes an inner race 12 in a housing 11 in which a drive shaft portion 11a is formed, A spline jig (100) to which a CV axle assembly (10) including a ball bearing (14) interposed between the ball bearing (12) and a cage (13) accommodating the ball bearing (14) is directly connected; The housing 11 and the drive shaft portion 11a of the CV axle assembly 10 via the first torque shell portion 224 are provided at the lower end of the spline jig 100 so that the spline jig 100 is rotatably engaged. A rotation checking unit (200) for checking the rotating torque of the inner race (12) with respect to the rotating shaft And a driving shaft portion (11a) that is disposed perpendicularly to a virtual axis of the driving shaft portion (11a) and is provided so as to approach and separate from the spline jig (100), and the rotation checking unit And a tilting check unit 300 for checking the tilting torque of the inner race 12 with respect to the housing 11 of the CV axle assembly 10 via the second torque cell unit 314. [

First, the inspected object of the CV axle assembly torque test apparatus may be the CV axle assembly 10. The CV axle assembly 10 mainly includes an inner race 12 in a housing 11 and a ball bearing 14 rollably interposed between the housing 11 and the inner race 12, And a cage 13 that partially accommodates the ball bearing 14.

A shaft 11a is provided at the shaft center of the housing 11 and a shaft hole 12a is provided at the shaft center of the inner race 12. [

Then, these components are assembled in advance before being put into the CV axle assembly torque test apparatus.

The device upper plate 110 may be provided with a spline zig 100 as shown in FIGS. 2 to 3 and 8.

The inner depression connected to the upper surface and the upper surface of the spline jig 100 may be formed to correspond to the outer shape of the housing 11 of the CV axle assembly 10. [ Accordingly, the spline jig 100 serves to fix the CV axle assembly 10 during the test process.

The socket 101 in the lower region of the spline jig 100 may be provided corresponding to the shape of the jig holder 210 inserted into the upper plate 110. 8A and 8B, the shape and specification of the socket 101 of the two spline jigs 100 may be the same. Accordingly, it is possible to quickly test the CV axle assembly 10 of various types of vehicles by replacing only the spline jig 100 with respect to the CV axle assembly 10 of various sizes, thereby reducing test cost and time.

The rotation checking unit 200 may be disposed below the apparatus upper plate 110 with reference to FIGS. 2 and 3. The rotation checking unit 200 includes a jig holder 210 to which the spline jig 100 is coupled and at least one speed reducer connected to the third servomotor 221 and the third servomotor 221 225 and a load balancer 223 and at least one pair of pulleys 222. In this embodiment,

The jig holder 210 can be engaged with the spline jig 100 and the jig holder 210 can be rotated together with the spline jig 100 while the rotation checking unit 200 is operated.

The power of the third servomotor 221 can be transmitted to the pulley and other parts not shown in the figure, but by a belt. The rotational force transmitted to the pulley 222 can rotate the jig holder 210 and the spline jig 100 while passing through the speed reducer 225 and the load balancer 223.

The first torque shell portion 224 may be provided in an intermediate region of the rotation checking unit 200. The first torque shell portion 224 can check the rotating torque in real time.

With this configuration, the rotating checking unit 200 can check the rotating torque of the CV axle assembly 10 coupled to the spline jig 100. [

On the other hand, a tilting check unit 300 may be provided in the upper region of the upper plate 110 on the basis of FIG. 2 to 5, the tilting check unit 300 includes a first servo motor 311, at least one speed reducer 312 connected to the first servo motor 311, A tilting power portion 310 including at least a pair of gear portions 315; And a probe unit 320 which is embedded in the inner race 12 so as to check the rotating torque and the tilting torque.

The power of the first servo motor 311 is supplied to at least one speed reducer connected to the first servomotor 311 and the load of the first servomotor 311 is connected to the tilting power unit 310. The tilting power unit 310 provides a rotating force in the same manner as the rotating power unit 220 described above, The rotational force transmitted by the balancer 313 and the at least one pair of gear portions 315 can rotate the bending frame 321 by a predetermined angle.

The second torque cell unit 314 may be provided in an intermediate region of the tilting check unit 300. The second torque cell unit 314 can check the tilting torque in real time.

Referring to FIG. 4, the probe unit 320 mainly includes a bending frame 321 connected to the tilting power unit 310; A tilting handle 322 that is provided on the bending frame 321 and is down-operated according to the operation of the up-down driving unit 330 and is securely engaged with the inner race 12; And an alignment casing 323 disposed adjacent to the tilting handle 322 to align the CV axle assembly 10 when checking the tilting torque.

The bending frame 321 is provided in a substantially 'A' shape, and the tilting handle 322 may be disposed at an end thereof so as to face downward.

The alignment casing 323 may be supported by the support portion 324 in an area adjacent to the tilting handle 322. The alignment casing 323 can serve to align the CV axle assembly 10 and the housing 11 in advance before the tilting handle 322 is inserted into the shaft hole 12a of the inner race 12. [

More specifically, the CV axle assembly 10 is seated and fixed on the spline jig 100, the housing 11 is aligned by the alignment casing 323, and the tilting handle 322 is positioned on the inner race 12, The shaft hole 12a can be inserted into the shaft hole 12a.

The driving force of the first servo motor 311 is decelerated to be adjusted to rotate by a predetermined angle and the bending frame 321 can be tilted to the left by approximately 45 degrees on the basis of FIG. In this process, the second torque cell unit 314 can check the tilting torque of the CV axle assembly 10. [

2 and 3, the tilting check unit 300 includes a tilting handle 310 and a tilting handle 330. The tilting handle 330 is a tilting handle, And an up-down driving unit 330 for up / down-driving the probe unit 320; And an LM guide unit 340 that is moved up / down by the driving operation of the up-down driving unit 330. The up-down driving unit 330 may be a second servo motor 330.

With such a configuration, the CV axle assembly 10 is fixed on the spline jig 100 and the tilting handle 322 is inserted at the same time or sequentially checking the rotating torque by the rotation checking unit 200, Can be checked to satisfy the product specifications required by the customer and the good products can be accurately identified.

Meanwhile, the CV axle assembly torque test apparatus may further include a bearing check unit 400 for checking the number of the ball bearings 14 of the CV axle assembly 10 as shown in FIG. The bearing check unit 400 may include a sensing sensor 410 provided on the probe unit 320.

The bearing check unit can check the number of the ball bearings 14 of the CV axle assembly 10 to be inspected to match the test results of the CV axle assembly 10 and accurately classify the parts.

 The CV axle assembly torque test apparatus according to the present invention is provided with a display unit 500 for inputting input values and measuring and measuring the rotating torque and tilting torque outputted in the test process. A computing device including a PC, a display monitor, and various input devices.

In addition, a calibration unit 600 for performing calibration of the CV axle assembly 10 may be provided on one side.

As described above, the CV axle assembly 10 is fixed on the spline jig 100, and the rotating torque is checked by the rotation checking unit 200. At the same time or sequentially, the tilting handle 322 is inserted to check the tilting torque It is possible to accurately determine the good product satisfying the product specification required by the customer and to test the CV axles of various types of vehicles by replacing only the spline jig 100 and the tilting handle 322. As a result, Can be reduced and the productivity of the CV axle as a whole can be increased.

FIG. 6 is a view showing a state in which a rotating torque of a CV axle assembly is measured through a rotating check unit in a CV axle assembly torque test apparatus according to an embodiment of the present invention, and FIG. FIG. 8 is a view showing a state in which a tilting torque of a CV axle assembly is measured through a tilting check unit in a CV axle assembly torque test apparatus, and FIG. 8 is a view showing a spline jig in a CV axle assembly torque test apparatus according to an embodiment of the present invention FIG.

Hereinafter, the performance measurement step using the CV axle assembly torque test apparatus according to the embodiment of the present invention will be described in detail with reference to FIGS. 1 to 8. FIG.

First, in the apparatus, the tilting handle 322 and the spline jig 100 corresponding to the CV axle assembly 10 are replaced. The spline jig 100 can be coupled to the jig holder 210 through the socket 101. [

Next, the CV axle assembly 10 is seated and fixed on the spline jig 100, and the tilting check unit 300 is moved down by the up-down driving unit 330 and the LM guide unit 340.

6, the housing 11 is aligned by the alignment casing 323, and the tilting handle 322 can be inserted into the shaft hole 12a of the inner race 12. As shown in Fig. At this time, the outer diameter of the tilting handle 322 and the shaft hole 12a of the inner race 12 can be interference-fit.

 Next, the rotation checking unit 200 is driven. The third servomotor 221 is operated and the rotating power unit 220 is operated to rotate the jig holder 210 and the spline jig 100 so that the CV axle assembly 10 can also be rotated. At this time, the inner race 12 coupled with the tilting handle 322 can be rotated relatively less than the number of revolutions of the rotation checking unit 200, or can be stopped.

The first torque cell section 224 checks the rotating torque of the housing 11 with respect to the inner race 12 and sends the result to the display section 500 in real time.

At the same time or sequentially, the tilting power section 310 can be operated.

The probe unit 320 is tilted to the left at an angle of about 45 degrees in a vertical state (default state) when viewed from the reference of FIGS. 2 and 5, and is rotated at a constant angular velocity. The driving force of the first servo motor 311 is decelerated to be adjusted to rotate by a predetermined angle and the bending frame 321 can be tilted to the left as shown in FIG. The tilting maximum angle in this embodiment can be tilted by about 45 degrees.

The bending frame 321 is tilted and the tilting handle 322 is tilted with the inner race 12 engaged. At this time, since the housing 11 is engaged with the spline jig 100, the tilting torque of the inner race 12 can be measured.

In addition, the real-time rotating torque can be checked through the rotation checking unit 200, and the tilting torque through the tilting check unit 300 can be checked. In this process, the second torque cell unit 314 can check the tilting torque of the CV axle assembly 10. [

In addition, depending on the specific tilting angle of the inner race 12 with respect to the housing 11, the rotating torque can be checked. Alternatively, the tilting torque can be checked in real time according to the specific rotation rate.

After the operation of the tilting check unit 300 is completed, the bending frame 321 can be further tilted at a predetermined angle of about 45 degrees or more. Accordingly, the ball bearings 14 can be partially exposed outside the housing 11 and the number of the ball bearings 14 can be checked by the bearing check part 400, in particular, the detection sensor 410.

Thereafter, the tilting handle 322 is returned to the default state, the up-down driving unit 330 is operated up, and the test can be completed.

Through such a test operation process, the CV axle assembly 10 is fixed on the spline jig 100, and the rotating torque is checked by the rotation checking unit 200. At the same time or sequentially, the tilting handle 322 is inserted And the tilting torque can be checked, thereby satisfying the product specifications required by the customer, and the good products can be accurately discriminated. By replacing only the spline jig 100 and the tilting handle 322, various kinds of CV axles can be tested This reduces testing costs and time, which can increase overall CV axle productivity.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the present invention.

10: CV axle assembly 11: housing
12: inner race 13: cage
14: Ball bearing 100: Spline jig
110: Top plate 200: Rotating check unit
210: Jig holder 220: Rotating power part
221: Third Servo Motor 222: Pulley
223: load balancer 224: first torque shell portion
225: Reduction gear 300: Tilting check unit
310: tilting power section 311: first servo motor
314: second torque shell part 320: probe part
321: Bending frame 322: Tilting handle
323: alignment casing 330: second servo motor
340: LM guide part 400: Bearing check part
410: Detection sensor 500:
600: Calibration part

Claims (8)

A spline jig in which a CV axle assembly including an inner race in a housing in which a drive shaft is formed and a cage accommodating the ball bearing and a ball interposed between the housing and the inner race is directly connected;
A rotating check unit provided at a lower end of the spline jig and rotatably coupled to the spline jig to check the rotating torque of the inner race against the housing and the drive shaft of the CV axle assembly through the first torque cell unit; And
Wherein the rotary axle assembly is arranged to be perpendicular to a virtual axis formed by the drive shaft and is provided so as to approach and separate from the spline jig, And a tilting check unit for checking the tilting torque of the inner race with respect to the housing of the inner race,
The tilting check unit includes:
A tilting power unit including a first servo motor, at least one speed reducer connected to the first servo motor, a load balancer, and at least one pair of gears;
A probe unit which is inserted into the inner race so as to check the rotating torque and the tilting torque;
An up-down driving unit for up / down-driving the tilting power unit and the probe unit; And
Further comprising an LM guide unit which is moved up / down by a driving operation of the up-down driving unit,
The probe unit includes:
A bending frame connected to the tilting power section;
A tilting handle provided in the bending frame and operated downward according to an operation of the up-down driving unit to be forcedly engaged with the inner race; And
And an alignment casing arranged adjacent to the tilting handle to align the CV axle assembly when checking the tilting torque. delete delete delete The method according to claim 1,
And the up-down driving unit is a second servo motor. The method according to claim 1,
The rotation checking unit includes:
A rotating motor including a third servo motor, at least one speed reducer connected to the third servo motor, a load balancer, and at least one pair of pulleys; And
And a jig holder to which the spline jig is coupled. The method according to claim 1,
Further comprising: a bearing check portion for checking the number of ball bearings of the CV axle assembly. 8. The method of claim 7,
Wherein the bearing check unit includes a sense sensor provided on the probe unit.

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