KR100998204B1 - Apparatus for inspecting spline shaft of oil pump - Google Patents

Abstract

An apparatus for inspecting a spline shaft of an oil pump is disclosed. The spline shaft inspection apparatus of the oil pump of the present invention includes a base for supporting an oil pump having a spline shaft having male threads formed on an outer surface thereof; A column standing upright on one side of the base; A slider coupled to the column to move up and down with respect to the column; And an inspection unit coupled to the slider to perform a workability inspection on the male thread of the spline shaft supported on the base while moving up and down with the slider. According to the present invention, it is possible to automatically perform the overall quality inspection, such as the degree of machining of the oil pump spline shaft, that is, the presence or absence of male thread, machining dimensions, and precision, thereby eliminating general problems caused by the conventional manual inspection. In addition, the reliability of the test can be improved.

Description

Apparatus for inspecting spline shaft of oil pump}

The present invention relates to an apparatus for inspecting a spline shaft of an oil pump, and more particularly, to generally perform an overall quality inspection such as the degree of machining of the oil pump on the spline shaft, that is, the presence or absence of male threads, processing dimensions, and precision. The present invention relates to a spline shaft inspection apparatus for an oil pump that can solve general problems caused by the conventional manual inspection and can improve the reliability of the inspection.

In a typical automotive engine engine to which an oil pump can be applied, there are many parts in which a cylinder and a piston and a pair of adjacent parts, such as a crank shaft and a cam shaft, move relatively in motion.

Most of the above-mentioned parts are made of metal materials. If these parts are in direct contact with each other, the frictional heat is generated in the friction surface, which causes the friction surface to become rough and easily wear or press the parts. Triggered.

In order to prevent this phenomenon, oil is generally supplied to the friction surface. When oil is supplied to the friction surface, an oil film is formed therebetween, so that the frictional resistance decreases and the temperature due to the frictional heat between the two parts is reduced. It is possible to prevent the rise, thereby reducing the wear phenomenon to increase the durability of the parts.

The oil which performs this role is mainly stored in an oil pan provided at the engine bottom of the vehicle and is pumped to each engine of the engine when the engine is driven. At this time, the oil pump is responsible for pumping the oil to each engine of the engine. In other words, the oil pump sucks and pressurizes the oil stored in the oil pan when the engine is driven, and sends the oil to the lubrication unit. Usually, the oil pump is coupled to one side of the engine. It is divided into cyclic type, and the like.

Looking briefly about the structure of the oil pump, the oil pump has a pump body in which a space in which oil flows is formed, and a spline shaft provided at one side of the pump body and coupled to the main part of the engine. The square seal is then coupled to the oil pump to keep the engagement area with the engine airtight, and the oil seal and snap ring are coupled to the outside of the spline shaft area.

On the outer surface of the spline shaft, several to tens of rows of key shaped irregularities or male threads called serrations are formed at equal intervals along the circumferential direction thereof.

Since the spline shaft with male thread on the outer surface is a coupling part widely used to transmit a large torque, such as an engine, the spline shaft has a workability on the spline shaft, that is, the presence or absence of male thread, processing dimensions and precision, etc. Strict quality inspection is required.

However, in the related art, since the quality inspection of the spline shaft of the oil pump has been relied on simple manual labor, not only the inspection efficiency is lowered but also the reliability of the inspection is lowered.

An object of the present invention is to automatically perform the overall quality inspection, such as the degree of machining of the oil pump spline shaft, that is, the presence or absence of male thread, the size and precision of machining, so as to solve all the problems caused by the conventional manual inspection. It is possible to provide a spline shaft inspection device for an oil pump that can improve the reliability of inspection as well.

The above object, according to the present invention, the base for supporting the oil pump having a spline shaft formed with a male thread on the outer surface; A column standing upright on one side of the base; A slider coupled to the column to move up and down with respect to the column; And an inspection unit coupled to the slider to move up and down together with the slider to inspect a workability of a male thread of the spline shaft supported by the base. Is achieved by

Here, the inspection unit is coupled to the slider along the lifting and lowering direction of the slider, a region of the lower end selectively to the inner hole of the spline shaft for axial alignment with the spline shaft An alignment shaft portion inserted; A unit frame coupled to the alignment shaft portion at one side so as to be swingable in a forward and reverse direction with respect to the axis of the alignment shaft portion, and a through hole through which an upper region of the spline shaft partially passes at a lower end thereof; An inspection moving block having a female thread coupled with a male thread of the spline shaft and coupled to the unit frame to move up and down along the longitudinal direction of the alignment shaft; And a determination unit for determining whether or not the workability inspection of the male thread is performed based on a relative arrangement position of the inspection moving block with respect to the spline shaft.

The inspection unit may further include an elastic member for elastically biasing the inspection moving block toward the base side.

The unit frame may include a horizontal frame coupled to rotate relative to the alignment axis in one region; And a vertical frame provided radially outwardly of the alignment shaft and coupled to the horizontal frame at an upper portion thereof, and the inspection moving block may be coupled to the vertical frame.

A rotating bearing may be further provided between the alignment shaft portion and the horizontal frame.

The inspection unit may further include a rocking portion for swinging the unit frame in the forward and reverse directions with respect to the axis of the aligning shaft portion.

The swinging portion may be a swinging cylinder, the swinging cylinder comprising: a swinging cylinder body provided in an upper region of the slider; And a swing cylinder rod coupled to the swing cylinder body so as to extend and contract in length, wherein a region of the end portion is coupled to a position deviated to one side from the center of the horizontal frame.

At least one axis load supporting bearing may be further provided between the alignment shaft portion and the slider to support vertical loads on the alignment shaft portion.

The determining unit may include: a sensing reference block connected to the inspection moving block and moving up and down together with the inspection moving block; And a sensor disposed outside the unit frame to generate a good signal when the sensing reference block approaches.

The sensor may be a proximity sensor.

A tapered portion may be further formed in the lower region of the alignment shaft toward the base, the taper being gradually smaller in diameter downward.

The apparatus may further include an elevating driving unit configured to elevate and move the slider.

The elevating drive unit, a elevating rail provided between the column and the slider; And a elevating cylinder having a elevating cylinder body fixed to a bracket connected from the column, and a elevating cylinder rod coupled to the elevating cylinder body to extend and contract in length and having an end coupled to the slider. have.

The item of the workability inspection for the male thread may be at least one selected from the presence or absence of the male thread, the processing dimension of the male thread, and the precision of the male thread.

According to the present invention, it is possible to automatically perform the overall quality inspection, such as the degree of machining of the oil pump spline shaft, that is, the presence or absence of male thread, machining dimensions and precision, thereby eliminating general problems caused by the conventional manual inspection. Not only can it improve the reliability of the inspection.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

1 is a partially enlarged perspective view of a vehicle oil pump.

As shown in this figure, the vehicle oil pump 1 includes a pump main body (not shown) in which a space in which oil flows is formed, and a spline provided on one side of the pump main body and coupled to a main portion of an engine (not shown). The shaft 2 and the square chamber attaching part 3 formed in step below the spline shaft 2 are provided.

For reference, although the oil pump 1 shown in FIG. 1 is for a vehicle, the scope of the present invention is not limited thereto, but oil pumps such as other internal combustion engines or heavy equipment other than the vehicle oil pump 1 are not shown. The present invention can also be applied.

The square chamber 4 is detachably coupled to the square chamber mounting unit 3. The square seal 4 refers to a rubber ring having a square shape in cross section. The square chamber 4 is mounted to the square chamber mounting portion 3 serves to keep the coupling portion of the oil pump 1 and the engine to be kept tight.

As such, the square seal 4 serves to keep the coupling portion between the oil pump 1 and the engine airtight. In addition to the square seal 4, the oil seal 5 and the snap ring 6 are provided around the spline shaft 2. ) Is further provided to keep the area airtight.

On the other hand, the outer surface of the spline shaft 2 is formed with a male thread 2a called key irregularities or serrations of several to several tens of rows at equal intervals along the circumferential direction thereof.

As described above, the spline shaft 2 having the external thread 2a formed thereon is a coupling part widely used to transmit a large torque as in the engine as described above. ) And the engine are important, and consequently, a strict inspection on the workability of the male thread 2a, that is, the strict quality inspection such as the presence or absence of the male thread 2a, processing dimensions and precision, is required.

However, in the prior art, since the quality inspection of the spline shaft 2, such as the presence or absence of the male thread 2a, the machining dimensions and the precision, has been relied on simple manual work, not only the inspection efficiency is lowered but also the reliability of the inspection is low. Losing problems were caused.

Therefore, in the present embodiment, by inspecting the spline shaft inspection apparatus of the oil pump shown in Figs. It can be performed automatically to solve the problems of the conventional manual inspection as well as to improve the reliability of the inspection.

Figure 2 is a side view of the spline shaft inspection apparatus of the oil pump according to an embodiment of the present invention, Figure 3 is an enlarged view of the inspection unit region shown in Figure 2, Figure 4 is a plan view of FIG.

As shown in these figures, the spline shaft inspection apparatus of the oil pump according to the present embodiment, the base 10, the column 20 standing up on one side of the base 10, coupled to the column 20 And a male thread of the spline shaft 2 which is supported by the base 10 while being moved up and down with respect to the column 20 and coupled with the slider 30 to move up and down with the slider 30. The inspection unit 50 which carries out the workability test about 2a) is provided.

The base 10 is a part which supports the oil pump 1. As described with reference to FIG. 1, the oil pump 1 is formed with a spline shaft 2 formed with a male thread 2a to be strictly inspected and managed.

When the oil pump 1 is loaded on the spline shaft inspection apparatus of the oil pump according to the present embodiment and supported by the base 10, the spline shaft 2 is disposed to face upward as shown in FIG. 2. Of course, after the oil pump 1 is supported by the base 10, the oil pump 1 is firmly fixed to the base 10 by a separate clamp (not shown) or the like, which will be omitted.

The column 20 is a part for supporting the slider 30 so that the slider 30 can be moved up and down, and is long disposed along one side of the base 10 along the vertical direction. The bracket 21 is further coupled to the column 20. The bracket 21 is utilized as a place where the lifting cylinder body 43a to be described later is coupled.

The slider 30 is moved up and down with respect to the column 20 for the workability test with respect to the spline shaft 2 as a part which the test | inspection unit 50 is supported. In order for the slider 30 to move up and down with respect to the column 20, the lifting drive unit 40 is further provided in the spline shaft inspection apparatus of the oil pump according to the present embodiment.

The elevating drive unit 40 includes a elevating rail 41 provided between the column 20 and the slider 30, and an elevating cylinder 43. The elevating cylinder 43 is coupled to the elevating cylinder body 43a fixed to the bracket 21 connected from the column 20 so as to extend and contract with respect to the elevating cylinder body 43a so that the end thereof is a slider. A lifting cylinder rod 43b coupled to 30 is provided.

Thus, when the working fluid is supplied to the elevating cylinder body 43a and the elevating cylinder rod 43b extends in length with respect to the elevating cylinder body 43a, the slider 30 is guided to the elevating rail 41 and moves downward. On the contrary, if the lifting cylinder rod 43b is reduced in length with respect to the lifting cylinder body 43a, the slider 30 is moved upward while being guided to the lifting rail 41. At this time, the working fluid may be hydraulic, pneumatic or oil pressure.

On the other hand, the inspection unit 50 is coupled to the slider 30, the actual workability inspection for the male thread 2a of the spline shaft 2 supported on the base 10 while moving up and down with the slider 30 The part to proceed.

Here, the item of the workability test for the male thread 2a of the spline shaft 2 is any one selected from the presence or absence of the male thread 2a, the machining dimension of the male thread 2a, and the precision of the male thread 2a. Or one or more, but the scope of the present invention is not limited thereto.

The inspection unit 50 is largely aligned with the alignment shaft portion 51, the unit frame 53, the swinging portion 55, the inspection moving block 57, the elastic member 59, and the discriminating portion 61. ).

The alignment shaft portion 51 is coupled to the slider 30 in the vertical direction in the center region of the inspection unit 50, that is, in the vertical movement direction of the slider 30.

The aligning shaft portion 51 is partially inserted into the inner hole 2b of the spline shaft 2 in order to axially align with the spline shaft 2. That is, when the slider 30 is lowered, the alignment shaft portion 51 is lowered so that one region of the lower end thereof is selectively inserted into the inner hole 2b of the spline shaft 2 to form a coaxial with the spline shaft 2. do.

At this time, if the axis line between the alignment shaft portion 51 and the spline shaft 2 coincide with each other, the lower region of the alignment shaft portion 51 can be easily inserted into the inner hole (2b) of the spline shaft (2), If the axes between the alignment shaft 51 and the spline shaft 2 do not coincide with each other, the upper end of the spline shaft 2 may be damaged while hitting the lower end of the alignment shaft 51.

In order to prevent this, a tapered portion 51a is formed in the lower end region of the alignment shaft portion 51 facing the base 10 so that the diameter gradually decreases downward. The tapered portion 51a causes the spline shaft 51 and the spline shaft 2 to be splined even though the axes between the alignment shaft portion 51 and the spline shaft 2 do not coincide with each other to some extent. It can be inserted into the inner hole (2b) of the shaft (2), so that the alignment shaft portion 51 is coaxial with the spline shaft (2).

The unit frame 53 is a structure disposed outside the alignment shaft portion 51, and is coupled to the alignment shaft portion 51 so as to be able to swing in the forward and reverse directions with respect to the axis of the alignment shaft portion 51. The unit frame 53 is provided with a horizontal frame 53a coupled to be rotatable relative to the aligning shaft portion 51 in one region, and is provided at a radially outer side of the aligning shaft portion 51 and is positioned above the horizontal frame 53a. It may be composed of a vertical frame (53b) coupled to. The horizontal frame 53a and the vertical frame 53b may be bolted together as shown.

A rotation bearing 54 is further provided between the alignment shaft portion 51 and the horizontal frame 53a to help smooth rotation, that is, smooth swing of the unit frame 53. A through hole 53c through which the upper region of the spline shaft 2 partially passes is formed at the lower end of the vertical frame 53b.

In addition, an axial load supporting bearing 52 is further provided between the alignment shaft portion 51 and the slider 30 in the upper region of the rotary bearing 54. The axial load supporting bearing 52 has a structure in which a ball (not shown) is embedded in a ring-shaped body (not shown) at a predetermined interval.

Since the aligning shaft portion 51 is a portion which forms the reference axis of the quality inspection for the spline shaft 2 and should not be arbitrarily moved, in this embodiment, the supporting shaft bearing 52 is provided with an axial load supporting bearing. Due to the reference numeral 52, the vertical load on the alignment shaft portion 51 is supported.

The swinging portion 55 serves to swing the unit frame 53 in the forward and reverse directions with respect to the axis of the alignment shaft portion 51. As shown in FIG. 4, the swinging part 55 may be applied as a swinging cylinder. When the swinging portion 55 is applied as the swinging cylinder, the swinging portion 55 is placed on the upper region of the slider 30. A swing cylinder rod 55a and a swing cylinder rod 55a, which are coupled to the swing cylinder body 55a so as to extend and contract in length, and whose one end portion is coupled to a position deviated to one side from the center of the horizontal frame 53a. 55b).

Thus, when the working fluid is supplied to the swinging cylinder body 55a and the swinging cylinder rod 55b extends in length with respect to the swinging cylinder body 55a, the unit frame 53 is set to the axis of the alignment shaft portion 51. For example, it can be rotated in a clockwise direction. On the contrary, if the swing cylinder rod 55b is reduced in length with respect to the swing cylinder body 55a, the unit frame 53 can be rotated counterclockwise with respect to the axis of the alignment shaft portion 51. As the swing cylinder rod 55b is repeatedly operated, the unit frame 53 may swing in the forward and reverse directions with respect to the axis of the aligning shaft portion 51.

The reason why the unit frame 53 is oscillated using the swinging part 55 is because of the relative arrangement between the male thread 2a of the spline shaft 2 and the female thread 57a of the inspection moving block 57 to be described later. To adjust the position. That is, although the workability of the male screw thread 2a of the spline shaft 2 is good, the male screw thread 2a of the spline shaft 2 and the moving block 57 for inspection when the slider 30 is lowered. When the relative arrangement positions between the female threads 57a are not aligned, the male threads 2a of the spline shaft 2 and the female threads 57a of the inspection moving block 57 do not easily fit together with each other. At this time, the oscillation of the unit frame 53 by using the swinging part 55 is to ensure that the male thread (2a) of the spline shaft 2 and the female thread (57a) of the inspection moving block (57).

The inspection moving block 57 is coupled to the vertical frame 53b of the unit frame 53 so as to move up and down along the longitudinal direction of the aligning shaft portion 51, and the male thread 2a of the spline shaft 2 is provided. It is part that is combined with.

In order to proceed with the workability inspection of the male thread 2a of the spline shaft 2, a screw thread to be coupled with the male thread 2a is required. For this purpose, an inner surface of the moving block 57 for the inspection of the spline shaft 2 A female thread 57a is formed in contact with the male thread 2a.

The female thread 57a formed on the inspection moving block 57 is a thread used as a reference for the workability inspection of the male thread 2a of the spline shaft 2, and the male thread 2a of the spline shaft 2 If the female thread 57a of the inspection moving block 57 fits well with each other within a predetermined error range, the quality of the male thread 2a of the spline shaft 2 can be determined as good quality. However, if the male thread 2a of the spline shaft 2 and the female thread 57a of the inspection moving block 57 do not fit together, the quality of the male thread 2a of the spline shaft 2 is poor. Can be determined.

The elastic member 59 serves to elastically bias the inspection moving block 57 toward the base 10 side. For example, when the quality of the male thread 2a of the spline shaft 2 is poor or the quality between the alignment shaft 51 and the spline shaft 2 does not coincide with each other, or the quality is good, the spline If the inspection unit 50 is lowered by the slider 30 while the relative arrangement position of the male thread 2a of the shaft 2 and the female thread 57a of the inspection moving block 57 is not aligned, the spline shaft (2) pushes the inspection moving block 57 upwards. By the way, when the quality is good, the shaft line between the alignment shaft portion 51 and the spline shaft 2 naturally fits or the male screw thread 2a of the spline shaft 2 and the inspection movement are moved by the operation of the swinging portion 55. The relative position of the female thread 57a of the block 57 is aligned so that the male thread 2a of the spline shaft 2 and the female thread 57a of the test movable block 57 are fitted. 57) must return to the original position. To this end, the elastic member 59 is provided. In this embodiment, the elastic member 59 is applied as a compression spring.

Finally, the determination unit 61 is arranged relative to the spline shaft 2 relative to the spline shaft 2, that is, the male thread 2a of the spline shaft 2 and the moving block 57 for inspection. It serves to determine the quality of the quality inspection of the male thread 2a of the spline shaft 2 based on the relative arrangement position of the female thread 57a.

The determination unit 61 is connected to the inspection moving block 57, the sensing reference block 61a which is moved up and down together with the inspection moving block 57, and disposed outside the unit frame 53 for sensing It is provided with a sensor 61b for generating a good signal when the reference block 61a is approached. In this case, the sensor 61b may be a proximity sensor. When the sensor 61b detects the sensing reference block 61a, a signal of good quality is generated. Detailed operation of the determination unit 61 will be described later.

The operation of the spline shaft inspection apparatus of the oil pump having such a configuration will be described by various types.

First, the number of spline shafts 2 is of good quality with respect to the male thread 2a of the spline shaft 2, and the axis between the alignment shaft 51 and the spline shaft 2 is substantially completely coincident. The relative arrangement positions of the thread 2a and the female thread 57a of the inspection moving block 57 are also substantially identical.

In this case, when the working fluid is supplied to the elevating cylinder body 43a of the elevating drive unit 40 and the elevating cylinder rod 43b extends in length with respect to the elevating cylinder body 43a, the slider 30 is raised and lowered. It is moved downward while being guided to the rail 41, with the inspection unit 50 is also lowered. As the inspection unit 50 is lowered, the upper region of the spline shaft 2 supported by the base 10 is directed toward the alignment shaft portion 51 via the through hole 53c of the unit flame 53.

At this time, the relative position of the axis between the alignment shaft part 51 and the spline shaft 2, and the relative position of the male thread 2a of the spline shaft 2 and the female thread 57a of the inspection moving block 57 is substantial. Since the spline shaft 2 is fitted into the lower end region of the aligning shaft portion 51, the inspection moving block 57 is not lifted because it is completely coincident. As the inspection moving block 57 moves closer to the sensor 61b without moving, the sensor 61b generates a good signal. The generated signal may be, for example, a form represented on a monitor, or may be represented by a sound by a bell or a light by a lamp.

Secondly, the quality of the male thread 2a of the spline shaft 2 is good and the axis between the alignment shaft 51 and the spline shaft 2 is substantially completely coincident, but the spline shaft 2 It is a case where the relative arrangement position of the male thread 2a of the ()) and the female thread 57a of the inspection moving block 57 is not aligned.

In this case, as described above, as the inspection unit 50 is lowered, the upper region of the spline shaft 2 supported on the base 10 is aligned via the through hole 53c of the unit flame 53. The inspection moving block 57 is pushed upward while facing toward the shaft portion 51. Then, the swinging portion 55 is operated to swing the unit flame 53 in the forward and reverse directions, and the male thread 2a of the spline shaft 2 and the moving block 57 for inspection are caused by the swing of the unit flame 53. As the relative arrangement positions of the female threads 57a are aligned, the male threads 2a of the spline shaft 2 and the female threads 57a of the inspection moving block 57 fit together with each other within a predetermined error range. Lose. When the male screw thread 2a of the spline shaft 2 and the female screw thread 57a of the test moving block 57 are fitted into each other with a screw connection within a predetermined error range, the test moving block 57 having a raised position ) Is returned to its original position by the elastic repulsive force of the elastic member 59, and at the same time as the sensing reference block 61a approaches the sensor 61b, the sensor 61b generates a good signal.

Third, although the quality of the male screw thread 2a of the spline shaft 2 is good quality, the axis line between the alignment shaft part 51 and the spline shaft 2 is shifted, and the number of spline shafts 2 is not good. The relative arrangement position of the thread 2a and the female thread 57a of the inspection moving block 57 is also not aligned.

In this case, the sensor 61b generates a good signal while the operation similar to that of the second case described above is performed. However, in this case, since the axis line between the alignment shaft portion 51 and the spline shaft 2 is shifted, the unit flame 53 swings, and the taper portion 51a of the alignment shaft portion 51 has a structural structure. Due to the feature, as the inspection unit 50 descends, the process of naturally fitting into the inner hole 2b is further involved.

Fourth, the quality of the male screw thread 2a of the spline shaft 2 is inferior.

In such a case, even if the swinging portion 55 is operated with the upper region of the spline shaft 2 pushing the inspection moving block 57 upward, the spline shaft ( The relative arrangement positions of the male thread 2a of 2) and the female thread 57a of the inspection moving block 57 are not aligned. Of course, in some cases, the relative position of the male thread 2a of the spline shaft 2 and the female thread 57a of the inspection moving block 57 may be aligned, but the male thread of the spline shaft 2 may be aligned. Since the quality for 2a) is poor, a phenomenon occurs in that the male thread 2a of the spline shaft 2 and the female thread 57a of the inspection moving block 57 are not fitted to each other. Then, even though the elastic repulsive force of the elastic member 59 is provided, the inspection moving block 57 which is raised in position cannot return to the original original position so that a good signal is not generated.

As described above, according to the present embodiment, it is possible to automatically perform the overall quality inspection such as the degree of processing of the spline shaft 2 of the oil pump 1, that is, the presence or absence of the male thread 2a, the processing dimensions and the precision, and the like. Not only can the general problems caused by the conventional manual inspection be solved, but also the reliability of the inspection can be improved.

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention, which will be apparent to those skilled in the art. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

1 is a partially enlarged perspective view of a vehicle oil pump.

Figure 2 is a side view of the spline shaft inspection apparatus of the oil pump according to an embodiment of the present invention.

FIG. 3 is an enlarged view of the inspection unit area shown in FIG. 2.

4 is a plan view of FIG. 2.

* Explanation of symbols for the main parts of the drawings

1: Oil Pump 2: Spline Shaft

2a: Male thread 2b: Inner hole

3: square seal mounting portion 10: base

20: column 21: bracket

30: slider 40: lifting and lowering drive

50: inspection unit 51: alignment shaft

52: axis load bearing bearing 53: unit frame

55: swinging part 57: moving block for inspection

57a: female thread 59: elastic member

61: determination unit

Claims (14)

A base for supporting an oil pump having a spline shaft having male threads formed on an outer surface thereof; A column standing upright on one side of the base; A slider coupled to the column to move up and down with respect to the column; And And an inspection unit coupled to the slider to move up and down together with the slider to inspect the workability of the male thread of the spline shaft supported by the base, The inspection unit, An alignment shaft portion coupled to the slider along a moving direction of the slider, wherein an area of a lower end portion is selectively inserted into an inner hole of the spline shaft for axial alignment with the spline shaft; A unit frame coupled to the alignment shaft portion at one side so as to be swingable in a forward and reverse direction with respect to the axis of the alignment shaft portion, and a through hole through which an upper region of the spline shaft partially passes at a lower end thereof; An inspection moving block having a female thread coupled with a male thread of the spline shaft and coupled to the unit frame to move up and down along the longitudinal direction of the alignment shaft; And And a discriminating unit for discriminating whether or not the workability inspection for the male thread is performed based on a relative arrangement position of the inspection moving block with respect to the spline shaft, The unit frame may include a horizontal frame coupled to rotate relative to the alignment shaft in one region, and a vertical frame provided radially outward of the alignment shaft and coupled to the horizontal frame at an upper portion thereof. Moving block is spline shaft inspection apparatus of the oil pump, characterized in that coupled to the vertical frame. delete The method of claim 1, The inspection unit is a spline shaft inspection apparatus of the oil pump, characterized in that further comprising an elastic member for elastically biasing the inspection moving block to the base side. delete The method of claim 1, The spline shaft inspection apparatus of the oil pump, characterized in that the rotary bearing is further provided between the alignment shaft portion and the horizontal frame. The method of claim 1, And said inspection unit further comprises a rocking portion for oscillating said unit frame in the forward and reverse directions with respect to the axis of said aligning shaft portion. The method of claim 6, The rocking portion is a rocking cylinder, The rocking cylinder, A swinging cylinder body provided in an upper region of the slider; And Spline shaft inspection apparatus of the oil pump, characterized in that coupled to the oscillating cylinder body is extended and reduced in length, the oscillating cylinder rod is coupled to a position away from one side of the center of the horizontal frame to one side . The method of claim 1, At least one axis load bearing bearing for supporting a vertical load on the alignment shaft portion between the alignment shaft portion and the slider is further provided for the spline shaft inspection apparatus of the oil pump. The method of claim 1, The determination unit, A sensing reference block connected to the inspection moving block and moved up and down together with the inspection moving block; And Is disposed on the outside of the unit frame is a spline shaft inspection apparatus of the oil pump comprising a sensor for generating a good signal when the sensing reference block is approaching. 10. The method of claim 9, Spline shaft inspection apparatus of the oil pump, characterized in that the sensor is a proximity sensor. The method of claim 1, Spline shaft inspection apparatus of the oil pump, characterized in that the tapered portion is further formed in the lower end area of the align shaft portion toward the base gradually decreases in diameter. The method of claim 1, Spline shaft inspection apparatus of the oil pump, characterized in that it further comprises a lift drive for driving the slider up and down. The method of claim 12, The elevating drive unit, A lifting rail provided between the column and the slider; And And a lifting cylinder having a lifting cylinder body fixed to a bracket connected from the column, and a lifting cylinder rod having a length extending and contracting with respect to the lifting cylinder body and having an end coupled to the slider. Spline shaft inspection device for oil pumps. The method of claim 1, The item of the workability inspection for the male thread is at least one selected from the presence or absence of the male thread, the processing dimension of the male thread, and the precision of the male thread.

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