JPS63193001A - Gauging tool and alignment inspection method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an r-song tool (gaging tool).
) and a method of using this gauging tool, in particular a gauging tool for checking the alignment of two mutually spaced holes located on a common axis.

This gauging tool has particular application in testing the alignment of bearing seats in each semicircular end frame of a universal joint.

There is a wide variety of so-called plug gauges that measure the dimensional accuracy of each hole, usually the diameter. These plug gauges have a through gauge/stop that allows a Zolag r-gear of one size to pass through or pass through the hole, but a slightly larger plug gauge does not fit into this hole. Supplied in sets to form a syringe. That is, the size of the hole can be defined as being between the diameters of the two plug gauges.

When measuring the alignment accuracy of two holes spaced apart from each other, a simple Zorag r-ge is not sufficient. A common procedure for testing the alignment of spaced holes uses jigs and feeler gauges that must be carefully assembled to test each separate pair of spaced holes. Such a procedure is often impractical and cannot be performed during field inspection of universal joint cross holes.

Dana Corporation
ation) of Pacer Divisia ay (5pi
A gauging tool recently developed by Cer Division) can inspect the alignment of cross-holes in U-joint components such as end frames, slide frames, and flange frames used in universal joints. The alignment gauging tool consists of a single alignment rod with a precisely ground surface for testing the alignment of spaced circumferential bearing holes. However, this r-song tool does not provide a means for checking the alignment of non-circular spaced holes such as semi-circular holes or bearing seats or square or hexagonal holes.

An r-song tool for testing the alignment of 21 spaced holes located on a common axis is constructed by using an R-thong tool with an outer shape corresponding to the shape of each hole whose alignment is to be tested.
Equipped with twin gauge bushings. This shape may be any shape, such as square or circular, for example a circular shape for checking the alignment of a semi-circular receiving surface of an end frame of a universal joint.

Each separate gauge bushing has a uniform internal gauge hole. The gauging tool of the present invention also includes a cylindrical alignment rod having an outer diameter suitable for being closely received in the internal gauge bore of each separate gauge bushing.

Each gauge bushing is secured within each hole to be inspected. Passing the alignment rod through one of the gauge bushings and into the other gauge bushing directs the alignment of the spaced holes. The inability of this alignment rod to enter the other gauge bushing indicates a misalignment.

The gauging tool of the present invention includes a plurality of pairs of gauging bushings having different outer diameters for testing the alignment of spaced holes having different dimensions. Each separate gauge bushing is attached to a cylindrical alignment rod! ! It has the same uniform gauge inside diameter that will be accepted into the reed.

The method according to the invention for checking the alignment of two mutually spaced holes located on a common axis is applicable if these holes are partially formed by a bearing seat in a semicircular end frame. (a) selecting a pair of gauge bushings each having the same uniform internal bore and a cylindrical external shape matching the bearing seat diameter; and (1)) attaching a pair of retaining strips to the frame. securing one of the gauge bushings to each of the spaced bearing seats by attaching metal fittings such that the bearing seats and retaining straps define a pair of spaced apart holes; (C) providing an alignment rod suitable for being closely received within the internal bore of each of the gauge bushings; and (d) inserting the alignment rod into one of the gauge bushings. (e) determining whether the alignment rod also passes through the internal hole of the other one of the gauge bushes.

The alignment rod is threaded into the other, or second, gauge, bushing by a combination of rotational and axial movement of the alignment rod in sliding engagement.

Embodiments of the r-song tool and alignment inspection method according to the present invention will be described in detail below with reference to the accompanying drawings.

P-')n/in accordance with the present invention for testing the alignment of two spaced apart holes located on a common axis as shown.
'Tool (gaging t, oox) 1 0- is a cylindrical ivy alignment rod 12 and a pair of gauge bushes 14゜16
It is equipped with The outer shape of each gauge bushing 14, 16, or at least a portion thereof, corresponds to the shape of the hole whose alignment is to be tested. This shape may be a round hole, a square hole or any geometric shape. These holes are located on a common axis. In the illustrated example, these holes are shown as bearing seats 18, 20 of the semicircular end frame 22.

For example, when replacing worn universal joints at each end of an automobile drive shaft, all four bearings and U-joint cross members are replaced. The alignment of each cross-hole is extremely important to ensure that the new device reaches its possible lifespan. This alignment cannot be confirmed with the naked eye. And sometimes complex procedures are used to check alignment. The above-mentioned data alignment rod solves this alignment checking problem for all types of circular frames. However, this alignment rod is not a solution for the illustrated bearing seats with non-circular shapes or semicircular frames. As shown in FIG.
It is fixed to .

Each gauge bushing 14, 16 defines a respective uniform internal cage hole 28,30.

The matching rod 12 is connected to a gauging port.
ion) 32 and an abutting knurled handle portion 3 with a diameter slightly smaller than this gauging portion.
It has a cylindrical shape with 4. Gauging part 32
are internal gauge holes 28, 3 of gauge bushes 14, 16.
0'& is precisely polished to ensure close reception.

In use, after each gauge bearing or gauge bushing has been secured within the bore, the connection of these gauge bearings, and thus the alignment of the bearing seats, is accomplished by moving the gauging portion 32 of the alignment rod 12 to the first
The inner bore 28 of the gauge bearing or gauge bushing 14 of
It can be inspected by inserting it through the If the alignment rod 12 passes through the inner gauge hole 30 of the second r-socket bushing 16 through the hole 30 due to the axial and rotational movement of the alignment rod 12, the two holes 28.3 (1: They are aligned with each other as shown in Figure IE2.

FIG. 6 shows an exaggerated view of the end frame where one of the end frame lobes 936 is warped so that the holes are clearly misaligned. This condition is usually caused by improper disassembly of the fitting or failure due to thermal strain during use. FIG. 4 also exaggerates the axial misalignment of the two holes.

Such conditions are typically caused by the application of excessive torque (overload) or by thermal strain.

The alignment gauging section 10 is typically supplied with multiple pairs of gauge bushings to enable alignment of holes of various sizes to be tested. In this case, the gauge bushings in each row have suitably different outside diameters to match the bearing seat dimensions of the particular frame 22 being tested. Paired gauge bushings with non-circular external contours can also be provided to match the shape of the hole being inspected. Typically, the internal bores 28,30 of all gauge bushing pairs are identical to each other and are adapted to accommodate a single uniform gauging portion 32 of alignment rod 12. In some cases these r-gee holes are different from each other 9,
The gauging section is appropriately stepped to accommodate this difference in diameter. It is only necessary that the gauging portion of the matching rod have a uniform diameter that fits and fits closely to be received into the internal bore of each separate gauge bushing.

The gauging portion 32, or at least a portion thereof, preferably has a circular cross-section at the gage bushing engagement location, so that there is virtually no need to align each gauging bushing prior to performing a hole alignment test.

Although the present invention has been described in detail with reference to its embodiments, it is obvious that the present invention can be modified in various ways without departing from its spirit.

[Brief explanation of the drawing]

FIG. 1 shows one embodiment of the gauging portion of the present invention for use in testing the alignment of spaced holes formed in part by respective bearing seats in a joint frame. A perspective view showing a part expanded;
Fig. 2 is an enlarged side view, partially cut away, of the gauging part of the present invention for inspecting the alignment of each hole in the semicircular frame structure of Fig. 1; Fig. 4 is a side view showing the gauging tool of the present invention together with a joint frame for detecting exaggerated misalignments caused by failures caused by excessive torque or thermal strain; FIG. 3 is an end view showing the gauging tool of the present invention together with the joint frame. 10...r-song tool, 12...matching rod, 14°16...gauge bushing, 18.20...bearing seat,
22... Frame, 24... Holding band, 32... Gauging part, 34... Handle part

Claims (15)

[Claims] (1) two spaced apart objects located on a common axis
A gauging tool for inspecting the alignment of holes, including (a) a pair of gauge bushings each having an external shape corresponding to the shape of each hole whose alignment is to be inspected, and a uniform internal gauge hole; (b) a cylindrical alignment rod having an outer diameter suitable for being closely received through a gauge hole in each of the pair of gauge bushings, the holes being aligned with each other; The gauging tool is such that the alignment rod is received through the gauge hole of each of the pair of gauge bushings when each of the pair of gauge bushings is secured in each of the holes of the pair of gauge bushings. (2) The gauge bushing has a cylindrical external shape that determines the alignment of each circular hole.
Gauging tools as described in section. (3) Each gauge bushing of the pair has the same outer diameter for testing the alignment of two spaced apart holes of the same diameter. Gauging tools listed. (4) each gauge bushing of the pair has the same internal gauge hole diameter, and at least each portion of the matching rod that is to be received within each such internal gauge hole;
The gauging tools according to claim 1, wherein the gauging tools have the same outer diameter. (5) The gauging tool according to claim 4, wherein the alignment rod is provided with a gauging portion of uniform diameter extending over the distance between each hole whose alignment is to be tested. (6) The gauging tool according to claim (5), wherein the alignment rod is provided with a handle portion that contacts the gauging portion. (7) said pair of gauge bushings constitute a first pair of gauge bushings for testing alignment of said first pair of holes along a common axis; of the same uniform interior of said first pair of gauge bushings to check the alignment of a second pair of holes having an exterior shape different from that of the gauge bushings of said first pair and along a common axis. A gauging tool according to claim 1, comprising a second pair of gage bushings having a gage diameter. (8) In a gauging tool for inspecting the alignment of the bearing seats of each semicircular frame having a bearing holding band, (a) a gauging portion extending across the bearing seats of each frame to be inspected and a contact handle portion; (b) a pair of gauge bushings each having an outer diameter corresponding to the diameter of each said bearing seat to be inspected and a uniform inner gauge diameter; , at least a predetermined portion of the alignment rod at each end of the gauging portion extending across each bearing seat is uniformly smaller than the gage diameter such that at least a predetermined portion of the alignment rod at each end of the gauging portion extends across each of the bearing seats for sliding engagement within each gauging bushing. diameter, so that when these gauge bushings are fixed in each of the bearing seats by the bearing retaining straps,
checking alignment by moving the gauging portion of the alignment rod through one of the gauge bushings and into the other gauge bushing, into which it is not possible to move the alignment rod; A gauging tool adapted to indicate inconsistencies. (9) The gauging tool according to claim (8), wherein the entire gauging portion of the alignment rod has a uniform diameter. (10) The gauging tool according to claim (9), wherein the handle portion of the alignment rod has a diameter smaller than the diameter of the gauging portion. (11) The gauging tool according to claim (10), wherein the handle portion is knurled. (12) the pair of gauge bushings are configured to provide a first gauge bushing for testing the alignment of each bearing seat of the frame having a first given dimension;
a pair of gauge bushes;
a second, differently sized end frame having an outer diameter different from the outer diameter of the pair of gauge bushings and the same uniform inner gauge diameter of the first pair of gauge bushings; 9. A gauging tool according to claim 8, further comprising a second pair of gage bushings adapted to check the alignment of each bearing seat. (13) In an alignment inspection method for inspecting alignment of two holes located on a common axis and spaced apart from each other, (a
) a pair of gauges each having the same uniform internal hole and an external shape matching the shape of said holes spaced apart from each other;
(b) securing one of the gauge bushings within each of the spaced apart holes; and (c) closely receiving within the internal bores of both of the gauge bushings. (d) passing the matching rod through an internal hole in one of the gauge bushings; The second gauge in the bushing
An alignment inspection method comprising the step of determining whether or not the internal hole of the bushing is also passed through. (14) the initial step of providing a plurality of pairs of gauge bushings, all with the same uniform internal bore, each pair having a cylindrical shape with a different diameter than the other pairs;
Claim 1, wherein said step (a) is carried out by selecting one of said pair of gauge bushings.
13) The alignment inspection method for inspecting alignment of circular holes, as described in item 13). (15) mutually spaced holes are partially formed by the bearing seats on the semicircular end frame, step (b) comprising: (
ba) positioning one of said selected pairs of gauge bushings in each of said bearing seats; (bb) attaching a pair of retaining straps to said semicircular frame; and an auxiliary step for securing the selected pair of gauge bushings within the pair of spaced apart holes formed by the spaced apart holes defined in claim 14. A matching test method that tests the matching of two holes.