JPH01210254A - Wrapping machine - Google Patents

Abstract

PURPOSE:To suitably warp works of various kinds without a change of setup by providing a slide table moved along the axis of a work on a bed according to a numerical control command, and providing two or more kinds of wrapping process units arranged side by side in the direction of the axis of a work on the bed. CONSTITUTION:According to a previously programmed numerical control command, a slide table 2 is moved along the axis of a work on a bed 1. By this movement, a wrapping process portion of a work W supported on the slide table 2 is placed opposite to a desired wrapping process unit selected from two or more kinds of wrapping process units arranged side by side on the bed 1. After that, by the selected wrapping process unit, a wrapping process portion of the work W rotated on the table 2 is suitably wrapped.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a lapping machine that performs lapping on crankshafts, camshafts, etc. of automobile engines.

(Prior Art) In order to reduce vibration and noise, lapping is performed to finish the journal portion of the crankshaft, the pin portion, and the cam portion of the cam shirt 1-. For example, JP-A-6
As shown in Japanese Patent No. 0-172458, two pin processing units are installed on one side of the head, and two journal processing units are integrated on the other side so that they can slide freely. The processing unit for the pin part is mounted so that it can move independently in the front and rear directions, and by moving each unit, lapping can be performed on journal parts or pin parts of different diameters.

(Problems to be Solved by the Invention) The above-mentioned conventional apparatus has advantages such as shortening the setup time when changing the workpiece and improving work efficiency by 1υ1. On the other hand, two sets of moving devices such as motors and ball screws are required to move the processing unit for the pin part and the processing unit for the journal part, and as a result, the equipment becomes complicated and large, occupying an increased space, and is difficult to control. The system also becomes complicated, and there are problems such as the production cost of the device being 1 or more, and the equipment cost increasing and becoming expensive.

The present invention has been proposed to solve the two problems, and aims to simplify and reduce the size of the device and provide it at low cost.

(Means for Solving the Problems) The present invention provides a drive device that rotatably supports a workpiece, and a movement device that allows a slide table on which the drive device is mounted to be moved on a bed along the workpiece axis direction. and,
At least two or more types of lapping processing units are installed on the head in parallel in the workpiece axis direction,
The slide table is moved by the moving device based on a numerical control command, the lapping processing section of the workpiece is moved to a position facing the lapping processing unit, the lapping processing unit is moved to a lapping processing position, and the lapping processing is performed. It is characterized in that it is executed sequentially on the lapping processing section of the workpiece.

(for production) The above wrapping machine works as follows.

The workpiece rotatably supported on the slide table by the drive device is moved along the workpiece axis direction based on numerical control commands so that the desired lapping section faces the lapping unit, and the workpiece is moved onto the head. Among at least two types of lapping units arranged in parallel along the axial direction, a lapping unit corresponding to a desired lapping part is selected, and the selected lapping unit controls the lapping part of the workpiece. Wrapping is performed by rotating the workpiece. This operation is sequentially repeated based on numerical control commands to execute the lapping process for each lapping process section.

(Example) Hereinafter, an example in which the present invention is applied to a lapping machine that performs lapping on a pin portion and a journal portion, which are the lapping portions of a crankshaft as a workpiece, will be described in detail based on the drawings. do. FIG. 1 is a plan view of this device, and FIG. 2 is a side view thereof.

As shown in Fig. 5, the crankshaft to be lapped by this device is rotatably connected to the journal part JIIJ2, which is rotatably supported by the engine block (not shown), and to the end of the connecting rod. Pin parts pII p21 p3... and crank arms al+ a2... which integrally connect these journal parts JIIJ2... and pin parts 1)+, pz...
It consists of

Reference number 1 in FIGS. 1 and 2 is a bed, on which a slide table 2 is movably placed on a guide rail la fixed on the head 1. As shown in FIGS. The slide table 2 is equipped with a ball screw 2a and a ball screw 2 which are rotated by a slide table full motor Ml and a motor M1 according to a predetermined program on a guide rail la based on numerical control commands.
It is moved by a predetermined amount in the crankshaft axial direction A by a moving device consisting of a nut 2b screwed into the slide table 2 and fixed to the lower surface of the slide table 2.

On the slide table 2, there is a guide rail 3a for the driving belly button F.
is fixedly installed, and the drive head 3 is slidably placed on the guide rail 3a, and the drive head 3 is moved to the drive head guide rail 3a by the expansion and contraction of the air cylinder 3b for the drive belly button F.
Go back and forth above. The drive head 3 has a crank shirt I-W.
A drive-side chuck 3C is provided to grip one end of the drive head 3, and the drive head 3 is driven to rotate by a main shaft rotation motor M2.

Further, a driven head 4 is movably mounted on the slide table 2 on a guide rail 4a for a driven belly button F, facing the driving head 3, and is moved on the rail 4a by an air cylinder for the driven head (not shown). do. The driven head 4 includes a driven side center 40 that supports the other end of the crankshaft W together with the driving side chuck 3C.
It is rotatably installed coaxially with the

On the bed 1 there is a driving side chuck 3C1 and a driven side center 4.
Along the axis of the crank shirt +-W supported at 0,
Wrapping for journal part Euniso l-51, 52,
53, 54 and lapping processing Unisoto 91 for pin part
．． 92 is provided.

Wrapping unit l-51 for journal section.

52, 53, and 54 have the configuration shown in FIG. That is, rails 5a for a journal wrapping unit are arranged in parallel on the neck 1 along the axis of the crank shirt I-W and extend in a direction perpendicular to the axis. A support plate 5b is slidably provided on the rail 5a. A rocking plate 5d is pivotally supported on the support plate 5b by a support shaft 5C parallel to the axis of the crankshaft W. A lapping head device 6 is disposed at the front end of the swing plate 5d.

The lapping head device 6 has a fixed lever 6a fixed to the swinging plate 5d, and is pivoted to the swinging plate 5d by a support shaft 6C that faces the fixed lever 6a and can swing downwardly. It consists of a rotating lever 6b. Shoes 6d, 6d formed in arcuate surfaces centered on the axis of the journal portion j1 of the crankshaft W are removably fixed to the fixed lever 6a and the rotating lever 6b.

The diameter of the above-mentioned circular arc surface is formed between the diameter and the path of the journal portion j1 of the crankshaft W to be lapped.

An air cylinder 6e for work clamping is located between the vicinity of the spindle 6C of the rotation lever 6b and the swing plate 5d. One end of the air cylinder 6e is fixed to a bracket 5e fixed to the swing plate 1, 5d, and the piston The ronduro f is provided by being connected by a support shaft 6h via an arm 6g. Reference numeral 61 denotes a bar for regulating the stroke of the air cylinder 6e.

A paper reel device 7 is provided behind the support plate 5b. Paper reel device 7, support play) 5
A feed-out reel 7a rotatably supported on the upper part of a reel support base 7c that slides on the rail 5a together with the reel support base 7c, a take-up reel 7b provided at the lower part of the reel support base 7c and rotationally driven by a motor M3; It is composed of guide rollers 7d, 7d, . . . that guide the polishing paper 70 wound around the feed reel 7a to the take-up reel 7b.

The polishing paper 7e wound around the feed reel 7a passes through guide rollers 7d, 7d, . . . and reaches the tip 6 of the rotating lever 6b.
j, passes between the journal part j1 of the crankshaft W and the shoes 6d, and reaches the tip 6 of the fixed lever 6a.
It passes through guide rollers 7d, 7d, . 7f is a speed reducer that reduces the rotation speed of the motor M3 and transmits drive to the take-up reel 7b.

Further, the support plate 5b reciprocates on the journal wrapping unit rail 5a by the expansion and contraction of the air cylinder 5f controlled by the control command.

8 is a position regulating device provided on the support plates 1 to 5b, and an air cylinder 5h attached to the support plate 5b.
When the journal unit wrapping unit 51 is not activated, it is moved upward, and the upper end of the regulating device 8 comes into contact with the swing plate 5d, thereby holding the swing plate 5d.

The lapping processing unit 91 for pin portions has a configuration shown in FIG. 4. That is, a pin wrapping unit rail 9a is provided on the bed 1 in a direction perpendicular to the axis of the crankshaft W, and a movable support plate 9b is provided on the rail 9a. Support play 1-
A long hole 9c extending in a direction perpendicular to the axis of the crank shirt l-W is formed in the crank shirt l-W.
A support shaft 9d parallel to the axis of the swing plate 1, 9e is supported in a reciprocating and swingable manner by fitting into the elongated hole 9c.

A wrapping device 10 is provided at the front end of the swing plate 9e.

The wrapping device 10 includes a fixed lever 10a fixed to the swinging plays 1 to 9e, and a swinging play 1 supported by a support shaft 10c that faces the fixed lever 10a and can swing freely in the vertical direction.
・It consists of a rotary lever pivoted to 9e] and Ob. A knee 10d and a rod formed in an arcuate surface centered on the axis of the pin part p of the crank shirt lW are removably fixed to the fixed lever 10a and the rotating lever 10b. The diameter of the arcuate surface is formed between the diameter and the path of the pin portion p1 of the crankshaft W to be lapped.

The air cylinder 10e for work clamping is located between the pivot shaft of the rotating lever 10b]Oc and the swing pulley 1 to 9e.
Alternatively, attach one end of the air cylinder 10e to the screw plate 9g fixed to the swing plate 9e, and attach screws I and screws F'.
They are connected by a support shaft 10i via an arm 10h. 10j is air cylinder 10
This is a stopper that restricts the stroke of e.

A paper reel device 11 is provided behind the support play (9b). Paper reel device 11 (J reel support stand 11. A feed-out reel lla rotatably supported on the upper part of C, a take-up reel llb rotatably driven by a motor M4 installed at the lower part of the reel support stand 11G, [feeding reel], 1 guide roller lid, lid that guides the abrasive paper wound around a to the take-up reel llb;
It consists of...

Abrasive paper 11 wound around the feed reel lla, e
are guide rollers lid, lid..., rotating lever 10b
The fixing lever LO
It passes through the tip 101 of a, guide rollers lid, lid, .

The support plate 9b reciprocates on the pin wrapping unit rail 9a by expansion and contraction of the air cylinder 9f controlled by the control command.

12 is a position regulating device provided on the support plate 1-9b, and the air cylinder (
When the pin wrapping unit 1-91 is not activated, the second end of the regulating device 12 is brought into contact with the swing plate 9e, and the swing plate 1-91 is moved upward by the pin wrapping unit (not shown). Hold 9e.

In FIG. 1, reference numeral 13 is a workpiece supply lifter that supplies the crank shirt I-W between the driving head 3 and the driven head 4 and removes it according to a numerical control command.
A control panel 15 is a control device that instructs each unit to operate and stop based on commands from the control panel 14.

Next, the operation of the above embodiment will be explained. The crankshaft W is placed on the workpiece supply lifter 13 provided on the head 1, and the workpiece supply rick 13 is placed in accordance with a predetermined program by a start signal from a start switch or the like on the operation panel 14.
is activated, and the crank shirt l-W is moved by the driving side chuck 3c of the driving head 3 and the driven side center 4 of the driven head 4.
It moves to the rotation axis center position of 0 and is held at that position.

Next, the driving head 3 and the driven head 4 on the slide table 2 are moved along the driving head guide rail 3a and the driven head guide rail 4a, respectively, to the driving head air cylinder 3.
b. Moves by extension of the air cylinder for the driven head (not shown), each chuck 3c and center 40 support both ends of the crank shirts 1 to W, and then the work supply lifter 13 returns to its original state. and wait.

Next, according to a preset program, the slide table motor M1, which is a moving device, is operated based on numerical control commands.
, the slide table 2 is fixed to the head 1 by a hole screw 2a rotated by the motor M1, a nut 2b fixed to the bottom surface of the slide table 2 screwed onto the hole screw 2a, etc. The first journal part j+ of the crankshaft W, which is slid by the driving head 3 and the driven head 4, is subjected to lapping processing.
．． It moves to a position facing the wrapping unit 51 for the first journal part 54 and stops.

Next, the air cylinder 6e for work clamping in the lapping processing unit 51 for the first journal portion is contracted, and the rotating lever 6b is rotated upward about the support shaft 6C,
With the space between the fixed lever 6a and the rotating lever 6b open,
The air cylinder 5f is extended, the support plate 5b moves on the journal part wrapping unit rail 5a, and stops when the shoe 6d of the fixing lever 6a moves to the position of the first journal part j+.

Next, the position regulating device 8 is lowered to release the fixation of the swing plate 5d, and the swing plates 1 and 5d are made to be able to swing freely relative to the support plate 1-5b via the support shaft 5c. The abrasive paper 7e is surrounded by the journal portion j+ of the crankshaft W by contracting the air cylinder 6e and clamping it between the fixed lever 6a and the shoes 6d and 6a of the rotating lever 6b. Next, the main shaft rotation motor M2 is rotated, the chuck 3C of the drive head 3 is rotated, and the crankshaft W is also rotated.

Along with this rotation, the first journal part j1 is lapped with the abrasive paper 7e pressed against the outer peripheral surface, and the slide table 2 is moved in the crankshaft axial direction by the rotation of the table motor M1 based on the numerical control command. A slight reciprocating motion is given to the crankshaft W to perform the oscillation necessary for the lapping process. When the lapping process is completed, the rotation of the crankshaft W is stopped, the air cylinder 6e is extended, the pressure contact of the polishing paper 7e by the shoes 6d and 6d is released, and the support plate 5b is contracted by the contraction of the air cylinder 5f.
moves on the journal part wrapping rail 5a, moves to the original position, and stops.

Next, the take-up reel driving motor M3 is rotated, the take-up reel 7b is rotated by a predetermined amount, the polishing paper 7e on the lapping head 6 side is attracted, and a new paper 7e is paid out from the pay-out reel 7a.

Next, according to the program, the slide table 2 is moved again based on the numerical control command to a position where the second journal part j2 of the crankshaft W faces the second journal part lapping unit 52, and the second journal part lapping unit 52 is moved by the same operation as described above. 2. Apply lapping to the journal part j2. Similarly, the third journal section j3 and the fourth journal section j4 are sequentially connected to the third journal section j3 and the fourth journal section j4, respectively. Lapping process for the fourth journal part Execute the lapping process using Unisoto 53.54,
Completed wrapping of all journal parts.

If the crank shirt l-W has dimensions such that each journal part thereof directly faces the wrapping units 51 to 54, the above-mentioned lapping process is performed at the same time, and the following lapping process of the pin part is also performed. For one location, it can be done at the same time as the journal section.

Next, the operation of lapping the pin portions 1)+, 1)z, .

The slide table motor M1, which is a moving device, is rotated by a numerical control command, and the slide table 2 is moved via the pawl screw 2a and the nut 2b. The pin part p1 stops at a position facing the pin part wrapping UniSoto 91.

Next, an air cylinder (not shown) attached to the support plate 9b of the pin wrapping unit 91 presses the upper end of the position regulating device 12 against the swing plate 9e, that is, the state in which it moves forward and backward relative to the support plate 9b. Extend the air cylinder 9f with directional movement and rocking restricted,
The support plate 9b is moved on the rail 9a for the pin wrapping unit, and the first
When the shoe 10d of the fixed lever 10a moves to the position of the pin part p, it stops.

Next, the air cylinder (not shown) supported by the support plate 9b is contracted to lower the upper end of the position regulating device 12, and the regulation of the swinging and longitudinal movement of the swinging plays 1 and 9e is released. .

Next, the air cylinder 10e for work clamping is contracted, and the shoes 10d of the fixed lever 10a and the rotating lever 10b are
By clamping the first pin part p1 of the crank shirt l-W between the polishing paper 11.10d. e is surrounded by the outer peripheral surface of the first pin part p1 of the crank shirt lW. Next, the main shaft rotation motor M2 is rotated, and the crankshaft W is rotated. This rotation causes the swing play 1-9e
, and due to this swing, inside the elongated hole 9c of the support shaft 9d &)
The first pin part p of the crankshaft W due to the reciprocating motion
The lapping process is performed using the abrasive paper 1.1.6 pressed against the outer peripheral surface of the first pin part p1 following the movement of the first pin part p1, and the slide table 2 is slightly reciprocated in the direction of the crankshaft axis by numerical control commands. and perform oscillation on crank shirt l-w. When the wrapping process is completed, the rotation of crank shirt l-W is stopped, air cylinder 10e is extended, and shoes 10d, 1
When the abrasive paper 11e is pressed by 0d, it is released, and as the air cylinder 9f contracts, the support plate 1-9b slides on the pin wrapping rail 9a, moves to its original position, and stops.

Next, the take-up reel ll is driven by the take-up reel driving motor M4.
b is rotated by a predetermined amount, the abrasive paper 11e of the Lasoping Heso F10 example is attracted, and a new paper ie is drawn out from the feed reel] 1. It is fed out from a.

Next, according to the program, the slide table 2 is moved again based on the numerical control command, and the second position of the crank shirt L-W is moved.
Pin part p2 is wrapping machine Uniso I/92 for pin part
, and the second pin part p2 is lapped by the same operation as described above. By the same operation, the third pin part p3...the sixth pin part p6 are sequentially wrapped, and the wrapping process of all the pin parts is completed.

Crankshaft W subjected to lapping processing as described above
is placed on the work lifter 13, and the drive side chuck 3C1
Released from the driven side center 40, the work supply lifter 1
3, the wrapping machine outputs Ill.

In the above explanation, processing of the crankshaft of a six-cylinder engine has been described, but the processing of other crankshafts can also be handled by changing the program and numerical control commands. Furthermore, the processing conditions of the lapping processing section can be freely changed by numerical control commands, taking into consideration the processing accuracy of lapping and the like.

Furthermore, the present invention can be applied to lapping of cylindrical workpieces such as camshafts without scaled crankshafts by changing the shoes of the lapping head device and the numerical control commands.

(Effects of the Invention) According to the present invention, the slide I table, which is controlled according to numerical control commands programmed in advance, can be moved to match different types of workpieces. This enables wrapping processing, eliminates the troublesome work of setup change, has versatility for a wide variety of workpieces, and allows processing conditions to be changed as appropriate to suit the workpiece.

Furthermore, since the workpiece is moved by moving the slide table, it is possible to omit moving devices such as motors and ball screws for moving the machining unit for the pin part and the machining unit for the journal part, and the configuration and operation control system can be simplified. There are advantages such as simplification and miniaturization.

[Brief explanation of the drawing]

Figure 1 is a schematic plan view of the lapping machine of the present invention, Figure 2 is a side view, Figure 3 is a side view of a journal part lapping machine, Figure 4 is a pin part lapping machine, and Figure 5 is a side view of the lapping machine of the present invention. It is an explanatory view of crank shirt 1~. 1... Beso F, 2... Slide table, 3...
Driving head, 4... Driven head, 51.52, 53° 54... Journal part lapping processing Unisoto, 91
．． 92...Pin part lifting process Euniso I..., W...
·work

Claims (2)

[Claims] (1) A drive device that rotatably supports a workpiece, a moving device that allows a slide table on which the drive device is mounted to be moved on the bed along the workpiece axis direction, and a drive device that allows the slide table on which the drive device is mounted to be moved on the bed along the workpiece axis direction; At least two or more types of lapping processing units are installed in parallel, and the slide table is moved by the moving device based on numerical control commands, and the lapping processing section of the workpiece is moved to a position opposite to the lapping processing unit. The lapping machine is characterized in that the lapping unit moves to the lapping processing position and sequentially performs lapping processing on the lapping processing section of the workpiece. (2) A drive device that rotatably supports the crankshaft, a moving device that makes the slide table on which the drive device is placed movable on the bed along the axial direction of the crankshaft, and a drive device that supports the crankshaft on the bed. At least two types of lapping processing units for journal portions and lapping processing units for pin portions are installed in parallel in the axial direction, and the slide table is moved by the moving device based on a numerical control command, and the crankshaft moving a journal portion or a pin portion of the shaft to a position facing the lapping processing unit, and moving the lapping processing unit to a lapping processing position;
A lapping machine characterized by sequentially performing lapping on a journal portion and a pin portion.