JPS60114455A - Device for abrading and machining welding section in rim of wheel for bicycle and motive power - 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 is an apparatus for polishing a welded part of a wheel rim of an automobile or a power vehicle, and the apparatus is attached to a rotary table and a polishing tool provided around the rotary table. and a chuck mechanism attached to the rotary table to hold the rim in a working or processing position.

The rim in the present invention is a rim obtained by welding the ends of a cut and appropriately bent member into a circular shape. After welding, there are discontinuities on the inside and outside of the weld, which impair the appearance and function of the rim and must be removed by grinding.

An example of a conventional automatic device for processing welds on the rims of bicycles, motorcycles, etc. is Italian Patent No. 959.
631, but the device in this patent is
The first set processes the sides and outside of the weld, and the second set removes the rim from the first set to the second set.
The third set is processing the inside of the welded part of the rim. This device consists of a rotary table, a chuck mechanism that is attached to the rotary table to support the rim, and a series of work units that are installed around the rotary table and process the inside of the rim.

The presence of these three sets makes the conventional equipment cumbersome, dangerous and complex. Surprisingly, all of the machining operations on the welds.

It has been found that the installation can be carried out with a compact device having only one set with a rotary table and a series of working units for processing the entire weld. In the device according to the invention, the chuck mechanism for the rim mounted on the rotary table consists of two oppositely projecting, spaced and fixed receivers at the bottom and an adjustable chuck mechanism at the top. The rim is a fastening member that is pressed against the rim and fastens it to two receiving portions provided below.

By mounting the rim so that the weld is located in the gap between the two spaced projecting receivers, there are no obstructions inside the weld, so it can be installed along the circumference of the rotary table. Each side of the welded part can be processed by the assigned working unit.

The invention will become more apparent from the detailed description of the preferred embodiments. Note that this embodiment is merely an example and is not limited thereto.

In the accompanying drawings, reference numeral 1 designates the entire rotary table, which is mounted and driven by a known drive mechanism (not shown). A series of chuck mechanisms, generally designated by the reference numeral 2, are mounted on the rotary table at regular intervals around the rotary table. This chuck mechanism is for supporting the rims 3 and 3A in appropriate positions so that welding parts B at the abutting ends of the circularly bent members constituting the rims can be processed.

Known work units I, II, III, I
V, V, VI.

(1) and (2) are provided around the rotary table at angular intervals corresponding to the chuck mechanism 2, so that the welded portion of the rim can be processed by each polishing tool equipped with a grinding wheel or the like. Each working unit is provided with a tool drive mechanism that feeds the tool according to the outer surface of the rim to be machined. This feed can be controlled by a profiling device if necessary.

The chuck mechanisms 2 are all the same, and include a pair of members 2a that are L-shaped when viewed from the side and are vertically adjustable with screws 2B, and a piece that protrudes from the periphery of the rotary table as a lower part 2C. It consists of a support member. Lower part 2
At the free end of C, a pin 2d projects laterally from the bottom toward the other member 2a of the pair, and a groove is formed at the projecting end 2e. The two wooden pins forming a pair are provided on the same straight line with an interval between them. In its lower part, the rim 3.3A abuts these pins at each end of the weld B, so that the weld can be accessed from either side.

The chuck mechanism 2 has a pressing member 2f made of, for example, plastic on the upper side, and this pressing member contacts the rim at a diametrical position passing vertically between the two support pins 2d. This pressing member 2f is fixed to a shaft member 2g of a pneumatically operated jack 2h. The pneumatically operated jack is attached to a bracket 21 that can be moved along the column member 2 according to the diameter of the rims 3, 3A to be processed and fixed at any position. This column member 2 has a screw mechanism of 2 m.
is fixed to the top surface of the rotary table l.

Once processed, the rims arrive one by one at a removal station, where a working unit is positioned such that the rims can be transferred in parallel from the corresponding chuck mechanism to the removal position. The entire removal unit is numbered 100.
It consists of a fixed column member lot and a shaft member 102 slidably attached thereto, which is moved by a pneumatically operated jack 103. The shaft member 102 is integrally formed with a ring nut 104 having a straddle member or extension 105, to which a guide pin 106 is fixed, which can be guided by a bush 107 and moved downward. . This bushing is a straddle member of the column member 101, that is, an extension portion 1
It is formed integrally with 08. Therefore, the shaft member 102 can only move in the vertical direction. A gear 108' and a chain ill are attached to this shaft member 102. Through thrust and radial bearings 109, the shaft member rotatably supports an arm 110 having a bushing 112 suitably mounted thereon. Bush 112 is connected to a pneumatically actuated jack 115 by another arm 113 and an articulation joint 114 for rotating arm 11O. This pneumatically operated jack is attached to a support 117 integral with the shaft member 102 with reference numeral 116 by an arm 105 or the like.
It is pivoted at the point shown.

The arm 110 has, at its free end, a bush 118 that rotatably holds the unit that grips the rims 3, 3A at the weld B by means of a thrust bearing and a radial bearing 119.
It is equipped with This unit is equipped with a pneumatically actuated jack 1
02, the shaft member 121 of this pneumatically operated jack has a bush 123 to which the jack cylinder is attached.
It penetrates inside. This bush has a chain l11
The applied gear 122 is fixed. Therefore, the bush 123 and the jack 120 can rotate about their vertical axes. A base member 124 is fixed to the bush 123, and two side plates 125 are attached to this base member.
is provided. A block 126 is slidably attached between both side plates. A coupling rod 127 is pivoted to this block at a point indicated by the reference numeral 128.
It acts on a pin 129 of a lever 130 that is pivoted to the two side plates 125 at points 131. This lever supports an adjusting jaw 132 which, under the control of a pneumatically actuated jack 120, presses the rim against a pair of parallel horizontal pins 133 projecting from the two side plates 125. For this reason,
The above-mentioned removal unit is movable in the vertical direction, and can be moved along two axis lines (that of the column member 101 and that of the bush 12).
In the illustrated embodiment, which can be rotated horizontally about the rim 3, 3A (that of No. 3), and which can also remove the rims 3, 3A and open and close the clamp consisting of jaws 132 and pin 133, the device according to the invention: 8 working units or stations I, II, m equipped with abrasive tools such as grinding wheels with different grain sizes;
, IV, V, Vl, ■ and ■. The device according to the invention is provided with a manual installation station and a removal station for the finished rim, the removal station shown in FIG.
A removal device as shown in FIGS. 7 and 8 is provided.

Next, assume that the cross section of the rim is as shown in FIG. 9, for example.

After the rim has been installed by the worker at the station as explained in connection with FIGS. 6, 7 and 8, the rim is placed in front of the work unit E, also shown in FIG. 2, using a rotary table. send. The grinding wheel M of this unit performs rough finishing of the weld at the inner center of the rim, which corresponds approximately to the section RR' shown in FIG. In the next unit, Station II, two grinding wheels roughen the sides of the rim R-R" and R'-R"'. Next, at the unit or station (2), rough finishing is carried out on the outside of the rim, that is, half of the groove, that is, the portion indicated by the symbol A, by means of a wheel installed at an angle. The other part, designated A', is destroyed by the next unit, station 2.

The unit or station V finishes the outer tips or tops P and Q of the rim (7). The unit, station (2), refinishes the section RR'. The unit or station ■ is R″-R
and the side surface indicated by R'-R'.Furthermore, the unit, or stay, John (2) trims the part indicated by R-R'.The unit, or station (2), refinishes the finished rim. It is for removing as follows.

Here, it is assumed that the removal device 100 is in the retracted position indicated by the broken line in FIG. 1, that is, the position indicated by the symbol F. When the rotary table 1 stops, pressure fluid is supplied to the double-acting jack 115, the arm 110 rotates to the position shown in solid line in FIG.
is moved to the open position (indicated by the dashed line in FIG. 5).

, in this state, the rim weld B is between the pin 133 and the open jaw 132.

A jack consisting of members indicated by reference numerals 132, 103, and 2b is operated, and the jaws 2f are lifted to separate or open the rims 3 and 3A. When the jaws are closed and lifted, the rim is lifted off the two lower bearings 2d. Then, the jack 115 is controlled in the opposite direction, the arm 110 rotates to the position shown in FIG. 1 and arrow F, the jack 103 descends, and the jaw 132 opens -1
3- Therefore, the rim can be removed. Then the next cycle of tables repeats.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of a device according to the invention, with some parts omitted. FIG. 2 is a schematic side view of one of the polishing units in conjunction with a rotary table, with only a partially illustrated installation. FIG. 3 is a partially sectional side view of a device for removing a rim that has been installed and processed using a rotary table. FIG. 4 is a schematic plan view showing the operating mechanism of the removal device/apparatus shown in FIG. 3. Fifth
The Figure is a side view of the rim locking mechanism forming part of the removal device shown in Figures 3 and 4. FIG. 6 is a front view of the chuck mechanism that positions the attached rim on the rotary table. Figure 7 shows the 6th
FIG. 3 is a side view of the chuck mechanism shown in the figure. FIG. 8 is a plan view of the chuck mechanism shown in FIGS. 6 and 7. -14- FIG. 9 is a sectional view showing a part of the rim processed by the apparatus shown in the above figure. 1...Fist attachment is on rotary table 2...Chuck mechanism 2d...Receiver is part 2f/Meeting/Stopping member 3.3A/Rim ■, ■, ■, ■, ■, ■, ■, ■ ・... Work unit patent applicant Silem Soceta Italiana Rapolazione Regno Emmetali Soceta Peruaccioni agent Patent attorney Yoshizo Yamaki (and 1 other person) -15-

Claims (1)

[Scope of Claims] 1) The mounting includes a rotary table, a series of working units provided around the rotary table including at least one abrasive tool, and a bicycle and motorcycle wheel mounted on the rotary table. In an apparatus for polishing a welded part of a rim, the chuck mechanism (2) comprises two chuck mechanisms used in The protruding and fixed receiving part (2d) and the movable stop member (2d) provided on the upper part
f), wherein the stopper member is driven to press the rim (3, 3A) and clamp the rim to the two lower receiving parts (2d). 2) A device according to claim 1, characterized in that the receiving part consists of a pair of pins (2d) having substantially the same axis. 3) A stop member (2f) operated by pressure fluid is connected to the rotary table (1) so that its height can be adjusted according to the diameter of the rim (3, 3A) to be processed. Apparatus according to claim 1. 4) Polishing tool (
M) all the work units attached (I, II, etc.)
The apparatus according to any one of claims 1 to 3, characterized in that all of the above are provided around the rotary table (1). 5) automatic removal units (IK) with adjustable stop mechanisms (130, 132° 133), which are rotatably mounted and movable vertically and horizontally; An apparatus according to any one of claims 1 to 4, characterized in that it is provided with: 6) The removal unit) (]IX is the rim (3,
3A) in parallel during the transfer operation (108, 11
1,112). The device according to any one of claims 1 to 5. ? ) said removal unit) (IX) comprises a vertically movable shaft member (102) and an arm (110) rotatably supported by said shaft member, with said stop mechanism (130, 132, 133) and holding a mechanism (120) for adjusting the stop mechanism.