JPS6228150A - Work handover device for processing machine - Google Patents

Abstract

PURPOSE:To provide proper timing of handing over and facilitate its control in a device, which is to perform refusion hardening of cam shafts or the like by installing a retaining mechanism such as chuck between a cast-in and sendout station and a processing station. CONSTITUTION:A work to be processed W is gripped in its middle by a clamping mechanism 23 of a cast-in member 20, and a cylinder unit 22 is operated to allow the chucking mechanism 29 of the next handover member 26 to hold the work W by its two ends. Then the work W is gripped in its middle by a clamping mechanism 11 of an arm 10. A rotary shaft 7 is rotated to transfer the work W to a preheating station S2, and current is supplied for preheating. The rotary shaft 7 is further rotated to make transfer to a heating station S3, where refusion is made using plasma torches 70, 70. Finally it is returned to the original cast-in and sendout station S1 to undergo repetition of the process. This device assures good efficiency in processing.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device for transferring a workpiece in an apparatus for remelting and hardening a workpiece, such as a camshaft.

(Prior technology) It is known that the cam lift part of a camshaft is remelted using plasma arc, etc., and the remelted part is rapidly cooled to chill it, thereby increasing the hardness of the surface of the cam lift part and improving its wear resistance. It is being

In a remelting and hardening processing apparatus that performs such a remelting and hardening process, it is desirable from the viewpoint of processing efficiency to automate a series of steps such as inputting (carrying in) the workpiece, remelting and hardening, and carrying out the processed workpiece. .

(Problem to be solved by the invention) By the way, in this way, inputting the parts to be processed (I! 2 people),
When automating a series of processes such as remelting and hardening treatment and carrying out processed workpieces, there is a gap between the loading device that inputs the workpieces and the processing equipment, or between the processing equipment and the transport of the processed workpieces. It is conceivable to directly transfer the workpiece to and from the apparatus.

However, in this case, the party delivering the workpiece cannot release the hold on the workpiece until the receiving side holds the workpiece, so In the case of receiving, it becomes difficult to control the timing of transfer, and therefore, there is a problem in that there are greater restrictions on improving the efficiency of processing speed.

Furthermore, there is a problem in that the loading/unloading device and the processing device cannot clamp each member to be processed at the same position.

(Means for Solving the Problems) In order to solve the problem described in item 1-1, the present invention provides a processing station which is provided with a holding mechanism such as a chuck between a processing station and a processing station and a processing station and a processing station. A parts delivery device was installed.

(Example) Embodiments of the present invention will be described below based on the accompanying drawings.

FIG. 1 is a side view of a remelting hardening processing apparatus according to the present invention, and FIG. 2 is a front view of the same apparatus. Figure 3 is an enlarged view of the main parts of Figure 1, and shows that the remelting and hardening treatment equipment (1) is located on the floor (2) and on the frame (2).
2) Stand up and fix the support box (3) containing the power supply etc. to this frame (2), the control box (4) behind this support box, and the cooling device (5) above.
Further, plasma power supply boxes (6), (6) are arranged on the left and right sides of this cooling device (5).

The remelting and hardening treatment apparatus (1) also includes a loading and unloading station (Sl) for loading and unloading workpieces (W) such as camshafts, and a preheating station (S2) for preheating workpieces (W). , a heating station (S3) for remelting the workpiece (W), and a processing station is constituted by a preheating station (S2) and a heating station (S3).These stations (S+), (S2) A rotating shaft (7) is disposed at an intermediate position between , (S3).This rotating shaft (7) is rotated via a motor (8) fixed to the support box (3) and a speed reduction mechanism, Further, the rotary whetstone is assumed to be rotated intermittently, for example, by 120° in response to a signal from the control box (4).

A case (9) having a substantially hexagonal shape in side view is provided in the center of the rotating shaft (7), and three wooden arms (lO) project outward from the case (9). There is. These arms (10)... are 120' apart from each other ftfl
Each arm (10) has a clamp mechanism (11) embedded in its tip.

This clamp mechanism (11) is connected to the case (11) as shown in Fig. 4.
9) The loft (
+3) to the left and right members (IO
a), (loa), and these left and right members (
10a), with a finger (+4) at the tip of (loa)
), (15) are pivoted, and the rear ends of these fingers (14), (15) are linked (113), (
The cylinder unit (+6) is pivotally connected to the rod (13), and the fingers (14) and (15) are opened by operating the cylinder unit (+2) to make the rod (13) project. Release the grip on the member and pull the rod (
By making the finger (13) retract, the finger (14)
) and (15) are closed to grip the member to be processed (W). The tip of one finger (15) is a bifurcated portion (+5a) facing the member to be processed (Ill), and the finger (14).

Even if (15) is slightly weighed, the workpiece (-) will not fall,
The fingers (14), (+5
) is closed, the member to be processed (W) is clamped at three points so that the center of the member to be processed (W) is always constant. By rotating the rotating shaft (7), the rotation locus of the clamp mechanism (11) is changed to each of the stations (
S+), (S2), and (S3) are substantially passed through.

Further, a rail member (17) is fixed to the front surface of the upper horizontal frame (2a) of the frame (2), and this rail member (17) is fixed to the front surface of the upper horizontal frame (2a) of the frame (2).
7) is engaged with the traveling head (18). A motor (18) is attached to the traveling head (18), and by driving this motor (19), the traveling head (18) moves laterally along the rail member (17) via a rack and pinion mechanism. .

The running head (+8) includes a loading member (20) for transporting unprocessed workpieces (W) to the loading and unloading station (Sl), and a loading and unloading station (Sl) for loading and unprocessed workpieces (W). The dispensing member (21
) is provided. The input member (20) includes a cylinder unit (22) fixed to the traveling head (18);
It consists of a clamp mechanism (23) provided at the tip of the rod of this cylinder unit (22), and when the cylinder unit (22) is actuated, the clamp mechanism (23) is connected to the input/discharge station (St) and this station (St).
It moves up and down between the front and upper position.

Also, the dispensing member (21) is a cylinder unit (2
4) and a clamp mechanism (25) provided at the rod end of this cylinder unit (24), and when the cylinder unit (24) is operated, the clamp mechanism (25) connects the loading/discharging station (St) and this cylinder unit (24). It moves up and down between the station (Sl) and the position directly above it.

A transfer member (2B) is disposed below the input/discharge station (Sl) for transferring the workpiece (W) between the input member (20) and the discharge member (21). There is. As shown in detail in the third factor, this bridge transfer member (2B) connects the intermediate part of the arm (28a) to the flange j'1 (27a) that protrudes forward from the front surface of the support box (3). ), and this arm (
The lower end of the cylinder unit (26a) is connected to the front (28a) of the cylinder unit (28) fixed to the support box (3), and when the cylinder unit (2B) is operated, the arm (28a) moves to the third cylinder centering on the middle part. The solid line position shown in the figure and the imaginary line position, that is, the position where the workpiece to be processed (W) is transferred and received between the processing device and the processing device are the positions where the workpiece to be processed (W) is received from the input member (20) and the delivery member (21) ) and the position where the member to be processed (W) is delivered. As shown in FIG. 5, which is a view in the Z direction of FIG. 3, the upper end of the arm (26a) has a chuck mechanism (2
9). This chuck mechanism (29) includes a cylinder unit (29a) and a cylinder unit (29a).
a), and the left and right centers (29b) hold both ends of the workpiece (W) by causing the cylinder unit (29a) to project. When the arm (28a) swings due to the operation of the cylinder unit (28), the chuck mechanism (28) swings.
9) is a clamp mechanism (
11) and the clamp mechanism (23) at the lower end of the input member (20) and the dispensing member (21), (
25).

Further, in the preheating station (S2), the second
As shown in the figure, a pair of cylinder units (30) on the left and right,
(30) are arranged, and as shown in FIG. 5, an electric heating device (32) as a preheating device is attached to the tip of the rod (31) of these cylinder units (30).

Furthermore, the heating station (S3) includes a heating device (
61) are arranged. The heating device (61) has a support (62) erected on the support box (3), and the support (62)
), a pair of support plates (83), (E13
), the first motor (64) and the second motor (85) are fixed to the outside of these support plates (83) and (83), and a stay ( 6
8), the case (67) is attached to the case (67).

Furthermore, the movable tables (88) and (89) are capable of sliding along guide rods (71) and (71) installed laterally within the case (67).

The first and second movable tables (88), (l(9)) can be moved synchronously by driving the first motor (64) by a mechanism not shown, and the second Only the second moving table (69) can be moved by driving the motor (65).

The heating device (61) can be moved up and down by a vertical movement unit (84) placed on the support column (62).

Further, a laser position detection device (85) is arranged behind the plasma torch (70), and this position detection device (85) detects the end surface of the cam portion of the camshaft, which is the workpiece (W), and the plasma torch The plasma torch (70) is moved in the axial direction by a signal from the position detection device (85) so that the cam part is accurately positioned on the arc from the plasma torch (70).

Furthermore, chuck devices (8B) and (86) are arranged on both sides of the heating station (S3) below the plasma torch (70), and these chuck devices (8B) and (8B) hold both ends of the workpiece (W). and the motor (
87) and the speed reduction mechanism, the chuck device (86) is rotated to rotate the member to be processed (W) around the axis.

Next, the functions of the remelting and hardening processing apparatus (1) configured as described above will be described. In the description, the clamp device (11) at the tip of each arm (10) will be described starting from a state in which the workpiece (W) is not gripped.

First, by driving the motor (9) of the traveling hand (1st), the unprocessed workpiece (X) is moved in the direction perpendicular to the plane of the paper in FIG. 2
0), the unprocessed workpiece (W
) and drive the motor (19) again to move the travel head (I8) to the center of the device (1).

Next, the cylinder unit of the input member (20) (22
) is activated to lower the clamp mechanism (23) diagonally downward, and the chuck mechanism (29) of the transfer member (26) holds both ends of the workpiece (W) held by the clamp mechanism (23). hold it.

Then, the cylinder unit (28) is activated and the arm (26a) of the bridge transfer member (2B) swings clockwise in FIG. 1, and the chuck mechanism (29) at the tip of the arm (28a)
The member to be processed (W) held by the arm (10) overlaps the rotation locus of the clamp mechanism (II) provided at the tip of the arm (10).

Therefore, a clamp mechanism (
11) grips the member to be processed (W) and releases the gripping state by the chuck mechanism (29).

The workpiece to be processed (
W) is handed over.

After this, the rotating shaft (7) is rotated counterclockwise at 1206 in FIG.
Rotate to preheat station (S2)
to be located. Specifically, when the rotation shaft (7) rotates 120" and the clamp mechanism (11) reaches the lowest position, the rotation of the rotation shaft (7) is stopped, and the holding member of the electrical heating device (32) (35), the member to be processed (
While holding both ends of the buttocks), the electric heating device (32
), the piston body (34), and the electrically conductive member (36) are applied to the member to be processed (W) to preheat the member to be processed (W) to about 200 to 450°C.

When the preheating is completed, the holding state by the electrical heating device (32) is released, and the rotating shaft (7) is again rotated 120 degrees counterclockwise in FIG.
W) is placed in the heating station (S3) at a position of 1ξ. Then, chuck devices (8G) and (8B) placed on both sides of the heating station (S3) hold both ends of the member to be processed (W). Once both ends are held, the grip by the clamp mechanism (11) is loosened.

Next, the plasma torches (70) and (70) are moved up and down and left and right so that the tips of the 1-chies face the part of the workpiece (W) to be remelted. Specifically, the treated member (
When W) is used as a camshaft, plasma torch (
The tips of 70) and (70) should face one end of the cam lift.

Then, once the plasma torches (70) and (70) are positioned at predetermined positions, the motor (87) is driven to rotate the chuck device 5 & (8El), and the rotation of the chuck device (86) causes the processed object to be processed. Plasma torch (70), (70) while rotating the member around the axis.
A predetermined portion of the member to be processed (W) is remelted by a plasma arc from the wafer. Furthermore, the melting depth at this time is shallow and only the surface area is melted, so after melting, heat is rapidly transferred to areas other than the fused area, and the material is rapidly chilled by self-cooling, resulting in high hardness and wear resistance. Form an excellent part.

Thereafter, the rotary shaft (7) is further rotated counterclockwise by 120 degrees, and the processed workpiece is positioned at the loading and unloading station (Sl). Then, receiving 1lff
The L member (28) swings clockwise, and the receiver moves to the passing member (28).
The clamp mechanism (29) of 26) grips the processed workpiece, and the clamp mechanism (11)
The workpiece to be processed (W) is transferred to the transfer member (26) and then transferred to the cylinder unit (26).
8), the receiver moves the arm (28a) of the transfer member (26).
is swung counterclockwise by a predetermined angle, and the workpiece (W) is taken out of the rotation locus of the clamp mechanism (11).

When the processed material (haze) is taken out of the rotation locus of the clamp mechanism (11), the cylinder unit (24) of the dispensing member (21) is activated, and the clamp mechanism (2
5) is lowered and the workpiece (W) is lowered at the lowering end.
grasp. In addition, the dispensing member (21) and the inputting member (20
) is controlled so that it does not descend during rotation, and - is prevented from interfering with the lower end.

In this way, the clamping mechanism (
25) grips the processed workpiece (W), the cylinder unit (24) is actuated to pull the workpiece upward, and the motor (18) is driven to move the entire traveling head (18). Then, the processed member (W) is transported to the next step or the like.

By repeating the above operations, the object to be treated is continuously remelted and hardened at the same location.

In addition, in the embodiment, there are two
Although a station having two functions is shown, these stations may be divided into two stations.

(Effects of the Invention) As explained in the following section, according to the present invention, the workpiece to be processed is once transferred between the input station or the unloading station and the processing station via the transfer member I7. The timing and control of the delivery of the workpieces to avoid interference between the workpieces becomes easier, and the processing efficiency is greatly improved.

Furthermore, at all of the loading station, unloading station, and processing station, certain parts of the workpiece,
For example, the center can be clamped.

[Brief explanation of the drawing]

FIG. 1 is a side view of the remelting hardening processing apparatus according to the present invention, FIG. 2 is a front view of the same apparatus, and FIG. 3 is an enlarged view of the main parts of FIG. 1.
FIG. 4 is an enlarged view of the clamp mechanism, and FIG. 5 is a view taken in the Z direction of FIG. 3. In the drawings, (1) is a remelting and hardening treatment device, (3) is a support poncus, (7) is a rotating shaft, (10) is an arm, and (11) is a rotating shaft.
), (23), (25) are clamp mechanisms, (20) are input members, (21) are dispensing members, (26) are transfer members, (29) are holding mechanisms, (32) are preheating devices, (6
1) is a heating device, (70) is a plasma torch, (86)
(S1) is a chuck device, (Sl) is an input/discharge station, (S2) is a preheating station, (S3) is a heating station, and (W) is a processed member. Patent applicant Honda Motor Co., Ltd. Representative Patent attorney 2 1) Yen - Department Patent attorney Kuni Ohashi Commercial patent attorney Udo Koyama Patent attorney No 1) Shigeru Figure 3 Figure 5 2-8 Procedures Written amendment (spontaneous) September 30, 1985 Mr. Michibu Uga, Commissioner of the Patent Office, Pa..1, “19 Indications Patent Application No. 168388/1988 2, Title of the Invention Delivery of Processed Parts in Processing Apparatus” Apparatus 3, Person making the amendment 4, Agent, )'(:)””-:'Pa・・・・I・′、−゛′ 5. Date of amendment order Voluntary 6. Specification and drawings subject to amendment , /A2y,l, ], □:1(-
♂＼?・'1. −． , v't 7. Contents of the amendment (1) The Detailed Description of the Invention column in the specification is corrected as follows. (b) On page 9, line 8 of the specification, the phrase "Figure 5" is corrected to "Figure 2." (b) Delete r(813)J on page 9, line 17 of the specification. (c) Lines 7 to 9 of page 10 of the specification are corrected as follows. "In addition, the alloy powder supply unit (84) is mounted on the pillar (62).
) is arranged to feed the high hardness alloy powder from this unit (84) into the plasma arc. (d) Page 12 of the specification: from line 518 to line 19 [Electrification heating device...conductive member (3B) J The text is corrected to read "conductive member." (2) Figures 1 and 2 are corrected as attached. 8. List of attached documents

Claims (2)

[Claims] (1) In a processing device configured to transport unprocessed workpieces from a loading station to a processing station and transport processed workpieces from the processing station to a payout station, the loading station or payout station and the processing station 1. A device for transferring a member to be processed in a processing apparatus, characterized in that a device for transferring a member to be processed is provided between the two stations, and the transfer device is provided with a holding mechanism for moving between stations. (2) A device for transferring workpieces in a processing apparatus according to claim 1, wherein the loading station and the discharging station are located at the same location.