JP3264417B2 - Rotary inspection and sorting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for inspecting the outer diameter of a cylindrical workpiece and its overall shape, and selecting good or defective.

[0002]

2. Description of the Related Art Conventionally, when inspecting the outer diameter of a work having a relatively complicated shape having a plurality of cylindrical portions having different diameters and a tapered portion on the outer periphery thereof, for example, and the overall shape thereof, the overall shape of a female shape has been known. There is a method in which a work is inserted into an inspection gauge to select good or bad. FIG. 6 shows an apparatus for inspecting the outer diameter and the overall shape by the method described above. This is conveyor 1
01 to intermittently feed the workpiece W and form inspection gauge 1
02 and the measuring rod 103, the bottomed cylindrical body 105 is moved to the left by a predetermined amount, and the measuring rod 103 is horizontally moved via the spring 104 to collect the work W by the force of the spring 104. It is inserted into the shape inspection gauge 102. Then, it is determined as a non-defective product when completely inserted, and as a defective product when stopped halfway through the insertion.

[0003]

In the apparatus for inspecting the outer diameter and the overall shape described in the prior art, since the insertion thrust is obtained by the spring pressure, the amount of deflection of the spring 104 (that is, (The amount inserted into the shape inspection gauge), the spring pressure changes, and the measurement error due to the change in the measurement pressure is large. In particular, the error tends to be large in a thin work. In addition, there is also a problem that the reciprocating method for performing measurement while the conveyance of the work is stopped is not suitable for a high-speed specification. The rotary inspection and sorting apparatus of the present invention has been made in view of the above-mentioned problems of the prior art, and has as its object the purpose of achieving a stable measurement pressure by the weight of the measurement shaft itself including a general inspection gauge. It is intended to provide an inspection / selection apparatus which is capable of improving the measurement accuracy by the above-mentioned method and capable of coping with a high-speed specification of a rotary type which continuously measures during the transfer of a work.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, a rotary inspection and sorting apparatus of the present invention inspects an outer diameter and its overall shape by fitting a female-shaped overall inspection gauge to a cylindrical workpiece. A device for sorting non-defective products and non-defective products, wherein the device is concentrically fixed on a rotary table for work transfer provided rotatably around a central axis set up substantially perpendicularly to the frame, and vertically. A rotating frame having two flanges, a driving means for rotating the rotary table and the rotating frame, and a circumferentially perpendicular and axial direction at each of the upper and lower flanges of the rotating frame in the axial direction. A plurality of measuring shafts movably provided at the lower end and having the concentric inspection gauge concentrically at the lower end and a cam follower pivotally supported at the upper end; and the cam follower fixed to the upper end of the center shaft by the weight of the measuring shaft. Abuts the rotating frame
A cam for moving the measurement axis in the axial direction by rotation of
At an outer position of each of the measurement axes, a lower flange portion of the rotating frame body is penetrated so as to be movable in an axial direction in parallel with each of the measurement axes.
A check pin digits set the horizontal groove, it is pivotally supported on a support shaft provided between the check pin and the rotating frame the measuring axis of the rotational direction rear side of the flange portion upper face of the lower side of the rotary frame member
An enlarged lever member that engages a tip portion with the horizontal groove of the check pin to increase the amount of movement by lowering the measurement axis to raise the check pin ; and a lower side of the rotary frame.
Is fixed in a circumferential groove engraved on the outer periphery of the collar.
A spring that presses the outer periphery of the check pin to provide resistance to the axial movement of the check pin, and a spring that is raised via the magnifying lever member by the lowering of the measurement axis and is pressed by the spring.
Insert the check pin, whose axial position is maintained, into the rotary
The lower surface is inclined against the pressing force of the spring by turning the cable.
And a return cam fixed to the frame by pushing down to the original position, and a lower than the upper limit position when a defective product is provided on the frame so as to be swingable in a horizontal plane and the complete shape inspection gauge is not completely fitted to the work. swing together with the c <br/> site gauge arm and the height gauge arm lower end portion of the check pin is swung in contact with a side surface of the gauge position
Is a selected arm member having a distribution arm for distributing transport during work on the rotary table to the defective take-out side coaxially, comprises a guide plate for guiding the non-defective on the rotary table to the good delivery side a measurement by form-inspection gauge rotating frame member 1 rotates and the feeding of the ejection or non-defective defective by checking pins and screened arm member continuously performed in the order of a return of the check pin, the total shape inspection gauge The thrust at the time of fitting to the work is obtained by the weight of the measuring shaft.

In the rotary inspection and sorting apparatus according to the present invention, when a work is fed into a rotary table and starts to turn along an arcuate transport path, the measuring axis first descends by its own weight along the cam curve of the cam, and The shape inspection gauge is fitted to the work. At this time, if the workpiece is defective, the lowering of the measuring axis stops during the fitting, and if the workpiece is non-defective, the measuring axis lowers to the lower limit position.

[0006] When the measuring axis is lowered, the check pin is raised by the balance-shaped enlargement lever, and indicates a raised position corresponding to the lowered position of the measuring axis. Then, the measuring axis rises relatively quickly, and the form inspection gauge stops at the upper limit position away from the workpiece. At this time, since the check pin is given resistance by the spring, the check pin is maintained at the raised position.

Next, when the check pin passes near the sorting arm member, if the check pin is at the upper limit position, it does not come into contact with the side surface of the height gauge arm. However, if the height gauge arm is slightly below the upper limit position, the height gauge arm is swung so as to be pushed open, and the distribution arm swings together with the height gage arm to assume a guiding posture toward the defective product unloading side. The defective work is sent here, separated from the rotary table and sent to the defective product discharge side. When the defective product separates from the rotary table, the check pin subsequently moves away from the tip of the height gauge arm, the height gauge arm and the distribution arm return to the original position by the force of the spring, and the distribution arm returns to the good product guiding posture.

Next, when the check pin passes under the return cam, the head is pushed down by the return cam to descend and return to the lower end position. As described above, since the fitting of the form inspection gauge is performed by the stable measurement pressure due to the weight of the measurement shaft, the measurement error is small. Further, since the measurement and the sorting are continuously performed during the transportation by the rotary table, the apparatus is optimal for the high-speed specification.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In the vertical sectional view of the rotary inspection and sorting apparatus shown in FIG. 1, a pair of central shafts 2A and 2B are formed at the upper and lower portions substantially at the center of a frame 1 having an upper plate 1a on the upper surface.
a, and is vertically erected.

A shaft-mounted worm wheel 3 is rotatably fitted to the lower central shaft 2A, and a shaft frame worm wheel 3 is rotatable around the upper central shaft 2B.
The central shaft 2B is prevented from rotating with the central shaft 2A by the connecting pin 7 and is fastened to the central shaft 2A by the bolt 39. To the worm wheel 3 with a shaft, a rotary gear 16 for driving a rotary table 16 for discharging a defective product and a rotary table 17 for delivering a good product, which will be described later, are fixed near the worm wheel 3a. The rotary table 6 is fixed concentrically, and the work mounting surface of the notch groove 6a formed on the rotary table 6 is formed at the same height as the upper surface of the upper plate 1a.

The rotating frame 4 has two flanges 4 at the top and bottom in the axial direction.
a, 4b, and a plurality (8 in this example)
Of the measuring shafts 8 are provided at equal intervals on the circumference and can move only in the axial direction parallel (perpendicularly) to the rotation axis. A concave shape inspection gauge 9 whose inner surface is formed as a full shape gauge is inserted into the center hole at the lower end of each measurement shaft 8 and is fixed by a nut 11, and a cam follower 12 is provided at the upper end above the rotary frame 4. And is rotatably supported along a cam surface 14a of a circumferential cam 14 described later.

Further, a key groove 8a is formed in the lower outer periphery of the measuring shaft 8 in parallel with the axis thereof.
a guide pin 13 engaging with the measuring shaft 8
Its own rotation is regulated. On the other hand, the upper central axis 2B
A circumferential cam 14 for moving the measuring shaft 8 up and down is concentrically fastened to a portion protruding from the rotary frame body 4 of the cam follower 12.
Is the cam surface 14 by its own weight such as the measuring shaft 8 and the form inspection gauge 9.
a, and moves up and down by the rotation of the rotary frame 4.

As shown in FIG. 2, a plurality of notch grooves 6a having a substantially semicircular shape into which the work W is fitted are formed on the outer periphery of the rotary table 6 in the same number and concentrically with the measuring shaft 8, and the upper plate 1a is formed. An arc-shaped guide plate 15 for preventing the workpiece W from jumping out is attached along the outer periphery of the rotary table 6. Here, the work W in the present example is a cylindrical work having a plurality of cylindrical portions having different diameters and a tapered portion on the outer periphery. The notch groove 6a is provided with an engaging projection (not shown) for preventing the work W from rising.

A rotary table 16 for discharging defective products and a rotary table 17 for sending out non-defective products are provided on the upper plate 1a.
Are located at two locations around the rotary table 6.
The rotary tables 16 and 17 are rotatably provided in a horizontal plane so that the outer circumferences of the rotary tables 6 and 6 are in contact with each other.
Notch grooves 16a similar to the notch grooves 6a
17a is engraved. Rotary tables 16, 17
Gears (not shown) meshing with the gears 5 are fixed to the lower end of the rotating shaft, respectively.
a, 16a and the notches 6a, 17a so that the notches 6a, 17a form a perfect circle at the point of contact close to each other.
a, 16a, and 17a are equally engraved on the pitch circumference.

Further, a guide plate 18 for discharging defective products is provided around the rotary table 16 for discharging defective products on the upper plate 1a of the frame 1, and a guide 19 for sending out non-defective products is provided around the rotary table 17 for sending good products. Guide plates 20 and 21 for transferring non-defective products are attached between the rotary tables 16 and 17, and a stand 23 of a sorting arm member 22 is fixed near the guide plate 21.

A vertical shaft 24 is rotatably supported on the stand 23, and the height gauge arm 2 is provided above the vertical shaft 24.
6, and a distribution arm 25 is fixed to the lower side. The arm portion of the distribution arm 25 has a U-shape consisting of two upper and lower sides, and one side surface 25a of the tip portion serves as a guide surface of a non-defective product that continuously holds the work W in the cutout groove 6a of the rotary table 6, and the other side surface 25b. Are formed on the guide surface of the defective product to the notch groove 16a for the rotary table 16 for discharging the defective product. The height gauge arm 26 and the distribution arm 25 are urged clockwise in FIG. 2 by the torsion spring 27 to come into contact with the stopper 28, and are in a state of non-defective product transfer as generally indicated by a thin phantom line. At this time, the arm tip of the height gauge arm 26 is in a state of entering inside a turning locus circle of a check pin 34 described later as shown by a thin phantom line.

On the other hand, as shown in FIGS. 3 and 4, a fulcrum base 31 is attached to the upper end surface of the lower flange 4b on the lower side of the rotating frame 4 at a position near the measuring shaft 8 in the rotation direction. A short rear end portion of the balance-type enlarged lever 33 is pivotally supported by the support shaft 32 on the fulcrum base 31 so as to be able to contact an adjustment bolt 38 described later, and the enlarged lever 33 has a long lever length. The front end extends to the vicinity of the measurement shaft 8 on the front side in the rotation direction.

Further, a check pin 34 is vertically and axially movably penetrated through the lower flange 4b of the rotary frame 4 outside each measuring shaft 8, and is concentrically screwed to the upper end of the check pin 34. A roller 35 pivotally supported by the tip of the enlarged lever 33 is movably engaged with the horizontal groove 34b of the head portion 34a along the groove 34b.

[0019] The circumferential grooves 4c in the axial center of the outer peripheral portion side to the lower side of the flange portion 4b of check pin 34 is fitted is not engraved, a plurality of fixed to the circumferential groove 4c The two ends 36 a of the plate springs 36 (in this example) press the outer periphery of each check pin 34, and a resistance against the axial movement of each check pin 34 is given. It does not move in the axial direction unless is added.

A block 37 is screwed to the central portion of the measuring shaft 8 in the axial direction, and an adjusting bolt 38 is screwed to one end of the measuring shaft 8 in parallel with the axis.
The lower end of the lever presses a short rear end of the lever length from the support shaft 32 of the magnifying lever 33 from above to swing the magnifying lever 33,
Using the long and short lever ratios, the amount of movement of the check pin 34 is moved in the axial direction so as to be larger than the amount of movement of the measuring shaft 8.

Since the check pin 34 is given resistance by the leaf spring 36, the axial position is maintained even when the measuring shaft 8 is raised and the adjusting bolt 38 is separated from the magnifying lever 33. Cage, top plate of frame 1
The support shaft 41 is screwed vertically to the rear position (FIG. 2) of the rotary table 6 on FIG. 1A, and the return cam 42 having the inclined lower surface is fixed to the upper end (FIG. 1). The upper end surface comes into contact with the inclined surface of the return cam 42 by the rotation of the rotary table 6, and is pushed down to the original position.

Next, the operation of the embodiment of the present invention will be described. When the worm 10 is rotated by a drive motor (not shown) and the rotator wheel 6 and the rotary frame 4 are rotated together with the worm wheel 3 with the shaft, a semicircular notch on the outer periphery of the rotary table 6 at the work receiving position a (FIG. 2). 1 is inserted into the groove 6a by a work feeding device (not shown).
The workpieces W are fed in a vertical position one by one. Then, while the rotary table 6 and the rotary frame 4 are turning by approximately 100 °, the measuring shaft 8 having the cam follower 12 at the upper end descends by its own weight along the downward slope of the cam surface 14a of the circumferential cam 14, and the measuring shaft The lower end of the overall shape inspection gauge 9 is fitted to the work W.

When the measuring shaft 8 is lowered, the lower end of the adjusting screw 38 presses the upper surface of the short-length rear end of the balance-shaped magnifying lever 33, and the check pin 34 is turned on by the lever ratio with the support shaft 32 as a fulcrum. The amount of movement is enlarged and moves in the axial direction.
At this time, if the overall shape inspection gauge 9 is completely fitted to the workpiece W, the measuring axis 8 moves down to the lower limit position, and if the workpiece is defective and the overall shape inspection gauge 9 stops during the fitting,
The cam follower 12 at the upper end of the measuring shaft 8 floats from the cam surface 14a of the circumferential cam 14, and the measuring shaft 8 stops at a position above the lower limit position. Therefore, the check pin 34 is at the measurement position corresponding to the axial position of the measurement shaft 8, that is, the upper limit position for a good product, and the lower position for a defective product.

Then, while the cam surface 14a rises and the rotary frame 4 turns approximately 45 °, the measuring shaft 8 rises to the upper limit position as shown in FIG.
Moves away from the work W. At this time, the adjusting screw 38 is separated from the magnifying lever 33, but since the sliding resistance of the chippin 34 is given by the leaf spring 36, the measurement position is maintained.

Next, the check pin 34 that keeps the measurement position by rotating the rotary frame 4 is moved to the sorting arm member 22.
When passing around the tip of the height gauge arm 26 protruding into the turning locus circle of the check pin 34, if the check pin 34 is at the upper limit position, the check pin 34 can pass above the height gauge arm 26 without any problem. If it is in the lower position, as shown in FIG.
The lower end of 4 contacts the side surface of the height gauge arm 26.

Then, the height gauge arm 26 is swung so as to be pushed away, and the distribution arm 25 is also swung together to guide the work W to the defective product unloading rotary table 16 as shown by a thick phantom line in FIG. Posture.
The defective workpiece W sent in this state is sent from the notch groove 6a of the rotary table 6 along the guide surface 25b of the sorting arm 25 to the notch groove 16a of the rotary table 16 for discharging defective articles, and the guide plate is provided. 18 and is stored in a defective storage box (not shown) via a discharge pipe 18a.

Next, when the check pin 34 separates from the tip of the height gauge arm 26, the height gauge arm 2
6. The distribution arm 25 is urged by the spring 27 to return to a position where the distribution arm 25 comes into contact with the stopper 28 by force, and assumes a good product guiding posture indicated by a thin imaginary line. This posture is maintained when the check pin 34 has passed above the height gauge arm 26 (at the time of a non-defective product), and the non-defective work on the rotary table 6 is continuously transported while being held in the notch groove 6a and guided. It is delivered to the non-defective product rotary table 17 along the plate 21 and the guide plate 20 and sent to the next process. While the notched groove 6a of the rotary table 6 thus emptied pivots to the above-described work receiving position a, the check pin 34 is pushed down by the return cam 41 provided on the way to lower the original axial position. Return to

[0028]

The rotary inspection and sorting apparatus of the present invention is configured as described above, and has the following effects. High-efficiency and high-efficiency specifications can be achieved by continuously performing measurement with the form inspection gauge and selection of non-defective / defective products by the selection arm member during one rotation of the rotary table and rotating frame. Is effective. In addition, since the thrust at the time of fitting the full-shape inspection gauge to the work, that is, the measurement pressure is obtained by the own weight of the measurement axis including the full-shape inspection gauge, it is possible to always obtain a uniform measurement pressure. The accuracy is improved.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a rotary inspection and sorting apparatus according to the present invention, as viewed from the direction of the arrows BB in FIG.

FIG. 2 is a horizontal sectional view of the rotary inspection and sorting device,
It is the figure seen from the AA line arrow direction of FIG.

FIG. 3 is a horizontal cross-sectional view of the rotating frame portion, as viewed from the direction of the arrows EE in FIG. 1;

FIG. 4 is an enlarged view of an enlarged lever and a check pin portion of the inspection unit, as viewed from the direction of arrow F in FIG. 3;

5A and 5B are explanatory diagrams of an inspection / sorting operation. FIG.
FIG. 3B is a diagram viewed from the direction of the arrow D-line, and FIG. 3B is a diagram viewed from the direction of the arrow CC of FIG. 2.

FIG. 6 is an explanatory view of a conventional horizontal inspection apparatus, and FIG.
Indicates the state before inserting the workpiece into the form inspection gauge,
(B) is a figure which shows the state by which the workpiece | work was inserted in the shape inspection gauge.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 1a Upper plate of frame 2A, 2B Central axis 3 Worm wheel with shaft 4 Rotating frame 4a, 4b Collar 6 Rotary table 8 Measurement axis 9 Form inspection gauge 10 Worm 12 Cam follower 14 Circumferential cam 16 For discharging defective products Rotary table 15, 18, 19, 20, 21 Guide plate 17 Non-defective product rotary table 22 Sorting arm member 25 Distributing arm 26 Height gauge arm 27 Torsion spring 33 Magnifying lever 34 Check pin 36 Leaf spring 42 Return cam a Work receiving position W Work

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B07B 1/00-15/00 B07C 5/00-5/38 G01B 5/08

Claims (1)

(57) [Claims] 1. A device for fitting a female form inspection gauge to a cylindrical workpiece to inspect the outer diameter and the overall shape thereof, and to select non-defective products and defective products. The upper and lower two flanges are fixed concentrically on a work transfer rotary table provided rotatably around the center axis.
A rotating frame body having: a driving unit for rotating the rotary table and the rotating frame body; and a flange vertically and axially movable at equal circumferential intervals on each of the upper and lower flanges in the axial direction of the rotating frame body. a plurality of the measurement axes cam follower is pivotally supported at an upper end portion having the the lower end of the form-inspection gauge concentrically, the said cam follower is in contact by its own weight of the measuring shaft is fixed to the upper end of the central shaft A cam for moving the measurement axis in the axial direction by rotation of the rotating frame, and an outer position of each measurement axis.
And check <br/> Kupyn digits set a horizontal groove on the underside of the upper end is the through-the measurement axis parallel to the axial direction movable to the flange portion of the rotary frame in location, the lower of the rotation frame The front end is pivotally supported by a support shaft provided between the check pin on the upper end surface of the flange portion and the measurement shaft on the rear side in the rotation direction of the rotating frame body.
An enlarged lever member that engages with the horizontal groove of the pin to increase the amount of movement by lowering the measurement axis and raises the check pin ;
Pressed into the outer circumference of the check pin
And a spring for giving resistance to the axial movement of the check pin, and a lowering of the measuring shaft , the shaft is raised via the magnifying lever member, and the axial position is maintained by the pressing force of the spring.
The check pin is pressed down to its original position on the inclined lower surface against the pressing force of the spring by turning the rotary table.
A return cam fixed to the frame, and an upper limit for a defective product which is provided on the frame so as to be capable of swinging in a horizontal plane and the complete shape inspection gauge is not completely fitted to the work.
Under end of the check pin lower position than the position that the gate
Height gauge arm and said to be swung in abutment to the side of di
A sorting arm member coaxially with a sorting arm which is swung together with the height gauge arm and sorts the work being conveyed on the rotary table to the defective product unloading side, and a guide plate for guiding good products on the rotary table to the non-defective product sending side preparative comprise becomes a measurement by form-inspection gauge rotating frame member 1 rotates and the feeding of the ejection or non-defective defective by checking pins and screened arm member continuously performed in the order of a return of the check pin, A rotary inspection and sorting apparatus, wherein a thrust at the time of fitting a form inspection gauge to a work is obtained by the weight of a measuring shaft.