JPS5866602A - Cutting device for rim part of bonding type aluminium wheel - Google Patents

Abstract

PURPOSE:To give the finishing touches of programmed cutting to a rim part of bonding type aluminium wheel by using a cutting tool as a cutter and measuring the configuration with a stylus so that said part has uniform thickness and uster. CONSTITUTION:The face of internal periphery of a rim part 18 is cut by means of a cutting tool 20. A stylus 22 is used as a measuring means of configuration of said face of the rim part 18. Said tool 20 and the stylus are fixed to a tool post 24, which is rotatably installed on an indicating base 28 freely sliding on rails 26. The face of internal periphery of the rim part 18 is cut by means of the cutting tool 20 indexed with a cutter post indexing device 30. The amount of movement of the stylus 22 is converted into data of measurement by means of a measuring controller 40.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for cutting a rim portion of a bonded aluminum wheel that cuts the inner circumferential surface of a rim portion of a bonded aluminum wheel that has been roll-formed.

Bonded aluminum wheels are usually manufactured by roll forming, but the thickness of the rim part is not uniform during the roll forming process, and as a result, the rim of the aluminum wheel is partially formed. There is a problem that the strength decreases.

Therefore, conventionally, a multi-axis fully automatic puff polishing machine has been used to polish the inner circumference of the rim so that the thickness of the rim remains constant. However, processing the rim part in this way requires high equipment costs, takes a long time to process, and furthermore, the decorative surface may be unbalanced in gloss with the disc attached to the outside of the aluminum wheel. There is a problem that .

For this reason, conventionally, the inner circumferential surface of the rim portion is generally machined by a copying lathe using a reference model. However, when such processing is performed, there is a problem in that the thickness of the rim portion cannot be made uniform to a satisfactory degree.

The present invention has been made in view of the above-mentioned conventional problems,
The purpose is to provide a cutting device that can efficiently cut a bonded aluminum wheel rim portion to a constant thickness and gloss using inexpensive equipment.

In order to achieve the above object, the present invention provides a cutting means for cutting the inner circumferential surface of the rim portion of a roll-formed bonded aluminum wheel, and a cutting program that executes a cutting program to reduce the thickness of the rim portion. In the joining type aluminum wheel rim cutting apparatus, the apparatus includes a control means for controlling the cutting means so that the cutting means is constant, and a shape measuring means for measuring the shape of the inner circumferential surface of the rim is provided, and the control means is configured to measure the shape of the inner circumferential surface of the rim. The present invention is characterized in that the cutting program is generated based on measurement data of the measuring means and finished dimension data given in advance.

Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

FIG. 1 shows a preferred embodiment of the present invention, which is applied to a turret lathe (equipped with an NC device).

In FIG. 1, a chuck 12 is provided at the tip of the main shaft 10, a reference plate 14 is provided on the chuck 12, and chuck claws 16 are provided so as to be slidable in the radial direction of the main shaft 10.

Rim part 1 of roll-formed bonded aluminum wheel
8V! It is gripped by the chuck 12, and in the gripped state, the axis of the rim portion 18 and the axis of the main shaft 10 are aligned.

In this embodiment, a cutting tool 20 is used as a cutting tool for cutting the inner peripheral surface of the rim portion 18.

Further, in this embodiment, a stylus 22 is used as a shape measuring means for measuring the shape of the inner circumferential surface of the rim portion 18.

These cutting tool 20 and stylus 22 are fixed to a tool rest 24. This tool rest 24 has an indicator 28 which is slidably provided on a rail 26 fixed to the base of the device.
The blade is rotatably attached to the blade, and its rotation is controlled by the tool rest indexing device 30. The cutter 20 indexed by the tool rest indexing device 30 is attached to the rim portion 1
Stylus 2 can cut the inner circumferential surface of 8.
2 can be moved in contact with the inner circumferential surface of the IJ module 18 to measure its shape.

The radial movement of the rim ff1l18 of the cutting tool 20 and the stylus 22 is performed by a DC motor 34 that drives a threaded rod 32 connected to the tool rest 24, and the axial movement of the rim portion 18 is performed by the cutting tool. This is done by a DC motor 38 that drives a threaded rod 36 connected to the stand 24.

Note that the movement of the stylus 22 is caused by the measurement controller 40.
is converted into measurement data by

The above cutter protrudes 1-equipment ft30, DC motor 34.38
The main shaft driving DC motor 42 is controlled by the control means shown in FIG. 2, that is, the NC device ft44.

The NC device 44 in FIG. 2 is provided with a CPU 46, to which a memory address bus 48, a data bus 50, and an address bus 52 are connected.

A ROM 54 and a RAM 56 are connected to the data bus 50, and the memory address 48 is connected to these memories 54 and 56.

Then, the servo interface 58 is connected to the bus 48.
50 and 52 are connected to a servo controller 60 through which the DC motors 34 and 38 are respectively driven.
．． 62 controls are being performed. Note that these DC motors 34, 38 are equipped with tacho generators 34a, 34b, 3
8a and 38b are connected, and their detection signals are supplied to each servo controller 60, 62.

Mata, data bus 50. The I10 address bus 52 is connected to a measurement interface 64 and a sequence interface 66 connected to the measurement controller 40. This measurement interface 64 can take measurement data from the measurement controller 40 into the NC device 44 .

This measurement interface 64 can also take in the detection signal of the pulse generator 65 provided for the main shaft 10 into the NC device 44.

Further, the sequence interface 66 controls a sequence controller 68H servo controller 70, which can drive the DC motor 42 and also drive and control a sequence actuator 72 provided in the tool rest indexing device 30, etc. I can do it.

Note that for the DC motor 42, the tacho generator 74
However, a sequence sensor 76 is provided for the sequence actuator 72, and each detection output thereof is supplied to the servo controller 70 and the sequence controller 68, respectively.

Furthermore, a keyboard controller 80 and a display controller 82 of an operation panel 78 are connected to the data bus 50 and I10 address bus 52.

A keyboard 84 and a display board 86 are connected to these controllers 80 and 82, respectively. Various data can be input to the NC device 44 by operating the keyboard 84, and the display board 86 is operated by the display controller 82 to display various types of data. can be done.

FIG. 3 shows a part of the panel surface of the operation panel 78. As shown in the figure, the keyboard 84 has an address key 84a and a data key 84b, and a display board 86Fi, an address display section 86a and a data display section 86b.
, respectively.

Further, FIG. 4 shows another part of the panel surface of the operation panel 78. As shown in the figure, the keyboard 84 includes a data measurement switch 84C1, a processing switch 84d,
Volume 84e for main rotation speed change adjustment and feed speed adjustment,
The display board 86 is also provided with pilot lamps 86c, 86d, 86e, and 86f.

A preferred embodiment of the present invention has the above configuration, and its operation will be explained below.

In this embodiment, first, a stylus 22 is used to copy a reference workpiece whose finished dimensions are measured, and the shape of the workpiece is measured.
This obtains finished dimension data.

To do this, a part program for collecting finished dimension data is created in advance, and this is input into the device 44 by operating the address key 84a and data key 84b, and then stored in the RAM 56.
Store in. This part program is then executed by the device 44 by operating the switch 84c. This part program is used to check the shape of the rough material of the workpiece and to process it.

Table 1 below shows the part program of this embodiment, and it is desirable to create the part program as simply as possible. In addition, in Table 1, jl
, m+ , g+ % Xo −Zn −gt, △X)
, f1%△z, -fy-mtvfs, ΔL++z+, m
s indicates data.

Table 1 After the above part program is stored, switch 84c
When the stylus 22 is operated, the device determines the center using the sequence number Nl, and fast-forwards the stylus 22 using the sequence number N2 to approach the reference workpiece. Next is this device.

As shown in FIG.
, Zo) in two axes directions by Zm and return to the origin (Xll-ZO). Then, move in the X-axis direction by ΔX, move Zm in two directions from this point, and perform measurement, sequence number N5).

Furthermore, the stylus 22 is moved by −Zm in two directions, and the above operation is repeated over the range M of the rim portion 18 in FIG.

When the above operations are completed, the stylus 22 is returned by fast forwarding (sequence numbers N8, N9), and then an end display command is given to the sequence controller 68 via the sequence interface 66 at the sequence number NIO, and the sequence controller 68 The lamp 86c lights up.

In this way, each sequence number N5T measurement data is obtained by the measurement controller 40, and this measurement data is stored in the RAM 56 via the measurement interface 64.

Note that, as shown in FIG. 6, the measurement part program is stored in the part program section of the RAM 56,
The measurement data is stored in the inspection program section. Further, the open side data is shown by a curve 100 in FIG. In FIG. 7, 200 represents the outer peripheral surface of the reference work or the rim portion 18 (work).

When the shape of the reference workpiece is measured as described above and the measurement data is obtained, the device 44 is operated as shown in FIG. 7 at 300.
A cutter path is generated such that the thickness of the rim portion 18 is constant as shown in FIG. In this embodiment, linear interpolation is performed for this cutter bus 300, but it is also suitable to perform circular interpolation.

The cutter path 300 is generated by executing a cutter path generation program stored in the ROM 54 in advance. Note that the cutter generation program is placed in the main program section of FIG. 6.

In this embodiment, the part program shown in Table 2 below is generated as described above.

7f:2 Table In the second table above, sequence number <-Nl indicates center indexing, sequence number 7/<-N3 td fast forward approach, sequence number N4 to N8 indicates measurement cycle, sequence number <-Nl01Nll
indicates fast-forward reversal, and sequence number N12 indicates completion display, which corresponds to the first
Same as table. Further, in the tree table, sequence number N2 represents the start of rotation of the main shaft 10 (13), and sequence number N9 represents the stop of rotation of the main shaft 10, respectively.

The part programs shown in Table 2 above are stored in the heart program section shown in FIG. 6 as processing part programs.

By generating the machining part program in this manner, the present apparatus is in a state where it can perform cutting on the inner circumferential surface of the rim portion 18.

Next, a check button representing a deviation corresponding to the machining allowance L7 from the cutter path 300 as a reference is input. That is, by operating the address key 84a and data key 84b described above, A+, Aν, As, A4, As in FIG.
Set each section of and calculate the machining allowance △tl, △t
Specify y, Δts, Δt4, and ΔtII.

Note that this data Vi is stored in the inspection program section of FIG. Further, since this input operation is usually very complicated, it is preferable that a certain amount is set in advance and only the portions to be corrected are corrected by the above-mentioned operation.

After various types of blogs and data are given to the device 44 in the manner described above, the workpiece (rim portion 18) to be processed is attached to the device by the chuck 12.

Next, the switch 84d in FIG. 4 is operated, and the device 44K
This device starts up when a processing start command is given.

In response to this command, the apparatus executes this work in the same manner as the mask measurement described above using the measurement part program shown in Table 1, and stores the data as measurement data in the inspection program section of FIG. 6.

Next, when this is completed, this apparatus calculates the intersection (Δt) from this measurement data, the mask data described above, and the trap, and determines whether the shape of this work is good or bad. Note that this determination function is performed by a check program in the inspection program section shown in FIG.

In this case, when it is determined that the shape of the workpiece is not good, the pilot lamp 86e in Kid FIG. Execution of the measurement part program starts.

Note that the speed of the main axis lO at this time is the volume 8 in Fig. 4.
4e, the feed speed of the stylus 22 is at a volume of 84.
It is adjusted by manipulating b.

When the above shape measurement is performed, measurement data as shown at 400 in FIG. 8 is obtained, and this data 400 is stored in the inspection program section of FIG. 6. Further, when this measurement is completed, the pilot lamp 86d in FIG. 4 is turned on.

Using the data 400 thus obtained and the tolerance Δt set in advance as described above, the device M44 determines the shape of the workpiece (rim portion 18). Note that this determination is executed by the check program shown in FIG. 6, similar to the aforementioned determination.

As a result of this judgment, if the shape error of the workpiece is not within the predetermined tolerance with respect to the tolerance Δt, the pilot lamp 86e in FIG. Start processing.

When this device starts cutting operation, it first drives the tool rest indexing device 30 to index the cutting tool 20, and then drives the DC motor 34 to index the tool 20.
．． 38, the DC motor 42 is driven to cut the inner circumferential surface of the rim portion 18 as shown in FIG.

This cutting process is performed according to a part program generated in advance from master data, and is performed in accordance with the third part program below.
The table shows the part program for this processing. In this program, as in Tables 1 and 2 above, the cutting tool 20 is indexed with sequence number N1, the spindle 10 starts rotating with sequence number N2, and the cutting tool 20 is fast-forwarded to the workpiece with sequence number N3. Then, cutting is performed repeatedly with sequence numbers N4 to NIO. And sequence number N
The rotation of the main shaft 10 stops at il, and the sequence number N
12, the cutting tool 2o is returned by rapid forwarding at N12, the cutting process with sequence number N14T is completed, and the pilot lamp 86f is turned on. In addition, in Table 3, sequence numbers N4 and N5 indicate the cutting process of section A1 in Fig. 7,
Sequence numbers N6, N7, N8, and N9 indicate the cutting operations in sections A2, A3, A4, and A5 in FIG. 7, respectively. The sequence number NIO indicates these repetitive operations.

Table 3 As explained above, according to the present invention, the shape measurement of the inner peripheral surface of the rim portion is performed by the shape measuring means, and the control means
A cutting program is generated based on the measurement data and finished dimension data given in advance, and the cutting means is controlled based on this program, so the thickness of the rim part can be adjusted in the optimal condition for each workpiece. Since the cutting process is performed to maintain a constant value, it is possible to prevent a partial decrease in strength of the rim portion. In addition, since the above-mentioned control performs cutting according to the workpiece, processing time can be shortened compared to conventional puff machining, etc. Furthermore, the device of the present invention can simplify the machine system, and can reduce the machining time compared to conventional puff polishing. Equipment costs can also be lowered compared to when using equipment.

Furthermore, when the cutting process is applied as in the present invention, the processed inner circumferential surface of the rim part will not cause a gloss-F imbalance with the disk attached to it.
It is extremely suitable in terms of appearance.

[Brief explanation of drawings]

FIG. 1 is an external view of a preferred embodiment of the present invention, FIG. 2 is a block circuit diagram of a preferred embodiment of the present invention, FIGS. 3 and 4 are explanatory diagrams of the operation surface of the operation panel in FIG. FIG. 5 is an explanatory diagram of the moving operation of the stylus, FIG. 6 is an explanatory diagram of the memory contents of the RAM shown in FIG. FIG. 3 is an external view of the device in a cutting state. 10... Main shaft, 18... Rim part, 20... Cutting tool,
22... Stylus, 30... Tool rest moving device, 34.38... DC motor, 40... Measurement controller, 42... DC motor, 44... NC device,
65...Pulse generator. Substitute chef Tatsuyuki Unuma (and 2 others) Figure 3 Figure 4 Figure 671

Claims (1)

[Scope of Claims] (1) A cutting means for cutting the inner circumferential surface of a rim portion of a bonded aluminum wheel subjected to roll plastic processing, and a cutting program that executes a cutting program to keep the thickness of the rim portion constant. and control means for controlling the cutting means so as to control the cutting means, the rim part cutting device for a bonded aluminum wheel is provided with a shape measuring means for measuring the shape of the inner peripheral surface of the rim, and the control means controls the shape measuring means for measuring the shape of the inner circumferential surface of the rim. A joining type aluminum wheel rim cutting device, characterized in that the cutting program is generated based on measurement data of the means and finished dimension data given in advance. (2. In the apparatus set forth in claim 1, the shape measuring means provides finished dimension data to the control means by measuring the shape of a reference workpiece whose finished dimensions have been determined. Wheel rim cutting device. (3) In the device according to claim 1 or 2, the shape measuring means includes a stylus that contacts and moves the rim to obtain measurement data, and the control means is a joint type aluminum wheel rim cutting device characterized by controlling the movement of a stylus by executing a pre-given program.