JPH02167640A - Compound trimming device - Google Patents

Abstract

PURPOSE:To prevent the damage of a work and to inspect without providing cutting stage by fixing the work to a lower die by a clamp rod, cutting off the casting fin of the work surface by the cutting off blade of an upper die and cutting one part of the black surface by a milling cutter as well. CONSTITUTION:A nuckle 13 is fitted into the fitting hole 25 of a lower die 21, held by plural support faces 26a - 26g, a press rod 65 of a clamp means 54 is descended with an upper die 42 being moved down, clamp rods 61a - 61c are moved down and the tips thereof 63a - 63c fix the nuckle 13 to the fitting hole 25 of the lower die 21. The upper die 42 is moved down further, a through hole 48b is engaged with the upper end part 13a of the nuckle 13, a cutting off blade 50 cuts casting fins, simultaneously a milling cutter 66 is advanced with rotating, the specific position of the side face 13b of the nuckle 13 is cut and the blank is removed. Then after the upper die 42 being ascended in the state of pressing the nuckle 13 by the clamp rods 61a - 61c of the clamp means 54, the press rod 65 is ascended, a fitting board 55 is pushed up by spring force, the clamp rods 61a - 61c are restored to the original position, the upper die 42 is ascended as well and the cutter 66 is returned to the origin.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a composite trimming device, and more specifically, it is capable of cutting off burrs generated on the surface of a workpiece during casting and milling the side surface of the workpiece at the same time. This invention relates to a composite trimming device that can perform the following functions.

[Conventional technology]

For example, a knuckle of a predetermined shape of a rear axle, which is an automobile part, is cast in a mold made of sand and made of spheroidized ductile cast iron. Since burrs are generated on the casting parting surface of the knuckle during casting, the burrs are usually removed by a trimming device and then the degree of spheroidization is inspected by an ultrasonic inspection device. 3 and 4 show a conventional trimming device. In the drawing, (1) is a lower mold installed on a base (2), and this lower mold (1) includes a lower mold main body (4) with a through hole (3) formed approximately in the center, and The fixed cutting tool (6) is attached and fixed to the upper opening edge of the through hole (3) of the lower mold body (4) and has a through hole (5) that communicates with the through hole (3). A cutting blade (7) is formed on the inner peripheral surface of the through hole (5) of this fixed cutting tool (6).

(8) is a plurality of guide shafts erected at the corners of the lower mold body (4), and (9) is an upper mold that is arranged above the lower mold (1) so as to be movable up and down. The upper mold (9) includes an upper mold main body (1)) having a plurality of guide sleeves (lO) attached to the lower corner portions, and a long molded body vertically installed at the center of the lower surface of the upper mold main body (1)). A plurality of different press rods (12a) (12b
) (12c), and the guide sleeve (10) is slidably inserted into the guide shaft (8).

When removing cast burrs (14) generated on the casting parting surface of the knuckle (13) having a predetermined shape, the knuckle (13) is moved to the upper end opening (5) of the lower die (1) using an appropriate means.
a) and insert the cast bar IJ (14) into the cutting blade (7).
〉Place it on the top edge surface. In this state, lower the upper die (9) and use the press rods (12a') to (12C) to press the knuckles (
13> into the through holes (5) and (3) of the lower mold (1).

As a result of this pushing, the knuckle (13) falls, and at the same time,
The cast burr (14) on the knuckle (13) is removed by the cutting blade (7). The mold (13) from which the casting bar IJ (14) has been cut falls onto a transfer conveyor (not shown) installed below the lower mold (1), and is transferred to the inspection process by the transfer conveyor. When the knuckle (13) is transferred to an inspection process by a transfer conveyor, it is taken out from the transfer conveyor in the inspection process, positioned and fixed by appropriate means, and the degree of spheroidization is inspected by an ultrasonic inspection device. .

[Problem to be solved by the invention]

Inspection of the degree of spheroidization of ductile cast iron using the above-mentioned ultrasonic inspection device is carried out by injecting ultrasonic waves into the knuckle (13) using a probe. Because a black crust is formed on the surface,
The test results were inaccurate. In order to ensure the accuracy of the test results obtained by the ultrasonic test device, it is required to cut and remove the black skin surface of the knuckle (13) that the probe comes into contact with. However, according to the conventional trimming device, it is not possible to hold and fix the knuckle (13) after removing the cast burr (14). A new cutting device had to be installed in between, and for that reason, the knuckle (1
3) It takes a long time to cut the black skin surface, resulting in extremely poor workability. Moreover, there are problems in that space cannot be used effectively and costs are high. Also,
According to the conventional trimming device, the knuckle (13) falls after cutting off the cast burr (14), which causes problems such as damage due to the impact when the knuckle (13) falls.

The present invention has been proposed in view of the above-mentioned problems, and an object of the present invention is to provide a composite trimming device that has extremely good workability and can reliably prevent damage to a workpiece.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention includes a lower mold that is installed in a fixed position and holds a workpiece with flashing on the surface, and a lower mold that is disposed above the lower mold so as to be movable up and down. An upper mold has a cutting blade for cutting off cast burrs at the upper exposed part of the workpiece held by the lower mold; A rotatable milling cutter for milling the side surface exposed to the outside, and a milling cutter that passes through the upper mold and is arranged to be movable up and down relative to each other, and is used when removing cast burrs from the workpiece and milling the side surface of the workpiece. It consists of a plurality of clamp rods that clamp the workpiece held by the lower die.

[Effect]

While the workpiece is held and fixed in the lower mold by the pressing force of the clamp rod, the cast burr generated on the surface of the workpiece is removed with the cutting blade of the upper mold, and at the same time, a part of the black skin surface is cut with a milling cutter. Can be done.

[Examples] Examples of the present invention will be described below with reference to FIGS. 1 and 2. In the drawing, (21)
is a lower mold installed on a bolster (not shown), and this lower mold (21) is designed to hold the knuckle (13) with the burr generation area and side surfaces of the knuckle (13) exposed. It is something. The lower mold (21) has a discharge hole (
The mounting plate 1- (23) has a mounting plate (22), and a lower mold body (24) of a predetermined shape is fixedly mounted on the mounting plate (23). The above lower mold body (24)
Forms a penetrating fitting hole (25) that communicates with the discharge hole (22) of the mounting plate (23), and supports the knuckle (13) on the open end surface or the inner peripheral surface of the fitting hole (25). A plurality of support surface parts (26a) to (2
6g). (27) (2B) is a mounting base disposed in a recess formed in a predetermined portion of the inner peripheral surface of the lower mold body (24), and each mounting base (27) (28)
The fixing member inserted and fixed into the mounting hole (29) (30) of
31) (32) and the mounting holes (29) (30)
A pressing member slidably inserted with its tip protruding from the
33) Compression spring (35) between (34)
(36), and this compression spring (35)
Due to the spring force of (36), the pressing member (33) (3
4) It is pressed against the lower end of the knuckle (13). (37) is the mounting plate for the lower mold (21)) (23
) multiple guide posts erected at the corners of (38
a ) (38b) is an annular member fitted into the guide post (37), and this annular member (38a) (38b
) A disc spring (39) is interposed between them. (40)
(41) is a mounting member fixed to a predetermined portion of the mounting plate (23) of the lower mold (21), and (41) is the mounting member (40).
) is a cushioning member made of an elastic material such as urethane rubber attached to the upper end surface of the

(42) is an upper mold that is arranged above the lower mold (21) so as to be able to move up and down, and this upper mold (42) has a mounting hole (43).
a) Plate-shaped body (43b) having (43b)
4), mounting recesses (45a) (45b) that are fixedly attached to the lower surface of this main body (44) and open to the mounting holes (43a) (43b), and the mounting recesses (
Insertion holes (46a) (46
b) Mounting plate forming (46b″) (4
7) is attached to the lower surface of the mounting plate t-(47), and is attached to the insertion hole (46b) of the mounting plate (47) (
A through hole (48b) communicating with (46b') (48
b') and a movable cutting tool (49). The through hole (48b) of the movable cutting tool (49)
A cutting blade (50) is provided on the inner circumferential surface of one of the through holes (48b'') in the (48b'') to remove cast burrs (not shown) generated at the upper end (133) of the knuckle (13). (51) is a guide block fixed to the lower corner of the main body (44) of the upper die (42), and the guide post (3) is attached to the lower end surface of this guide block (51).
7) is formed with a guide hole (52) to be inserted thereinto. (5
3) is an abutting member vertically provided on the lower surface of the mounting plate (47) of the upper mold (42) in correspondence with the buffer member (41) on the lower mold (21) side.

(54) is a clamping means for clamping the knuckle. In the clamping means (54), (5
5) is a mounting board horizontally and elastically mounted and supported on the main body (44) of the upper mold (42) via a plurality of support springs (56); is in the form of a plurality of holding holes (58) in the form of an annular collar (57).

(59a) (59b) are mounting holes (43a) (43b) and mounting recesses (46a) (4) formed in the upper mold (42).
One guide sleeve (59b) has two guide holes (60b).
) (60b') is formed. (61a)
(61b) (61c) are a plurality of clamp rods of different lengths for pressing the knuckle (13) fitted into the fitting hole (25) of the lower mold (21), each clamp rod (61a ) ~ (61c) is the upper end small diameter portion (
61a') (61b') (61c')
loosely inserted into each holding hole (58) of the mounting board (55),
and a small diameter aIS that protrudes upward from the annular flange (57).
An annular support plate (
62a to (62c) are fixedly installed and vertically mounted on the mounting board (55). The above clamp rods (61a) to (61c)
) are guided and supported by guide sleeves (59a) (59b) so as to be able to move up and down relatively, and the tip pressing portions (63a) (63b) (63c) are attached to the mounting plate (47) of the upper die (42). The insertion hole (46a) and the through hole (48b) of the movable cutter (49) (48
b''') so that it can be protruded and retracted outward. (6
4> is a support member fixed to a predetermined part of the upper surface of the mounting board (55), and (65) is a press rod that is movable up and down by a hydraulic cylinder or the like, and the tip of this press rod (65) is Press the abutting member (64) with the mounting board (55).
is moved downward against the spring force of the support spring (56),
The clamp rod (61a) passing through the upper mold (42)
The tips (63a) to (63c) of (61c) are made to protrude downward from the upper mold (42).

(66) (66) is a milling cutter for cutting a part of the side surface (13b) on which the black skin is formed of the knuckle (13), and this milling cutter (66) (66)
The side surface (13b') of the knuckle (13) cut by
) to inspect the degree of spheroidization of the ductile cast iron by bringing the probe of the ultrasonic inspection device into contact with the ductile cast iron.

Each milling cutter (66) has a plurality of cutting blades (68) attached to the tip of the main body (67) at equidistant positions on the circumference, and the main body (69) is installed so that the milling device can be moved back and forth.
) is rotatably attached to the top and bottom in two stages.

Next, the operating procedure of the apparatus of the present invention will be explained as follows. Furthermore, when the upper mold (42) is at the rising end position, the mounting board (55) of the clamp means (54) is pushed upward by the spring force of the support spring (56), and the clamp rod (61)
Tips (63a) to (63b) of a) to (61C)
It is assumed that the mold is retracted into the upper mold (42).

First, insert the knuckle (13) into the fitting hole (25) of the lower mold (21).
), and the knuckle (13) is held in a substantially upright position by the plurality of support surfaces (26a) to (26g).

At this time, the side surface (13b) of the knuckle (13) cut by the milling cutter (66) (6(i)) is cut by the lower mold (2).
1) is exposed. The knuckle (
13) is held, the upper mold (42) moves downward and at the same time the pressing rod (65) of the clamping means (54) descends to press the contact member (64) on the mounting board (55). . Then, the mounting board (55) is pushed downward against the spring force of the support spring (56), and the clamp rods (61a) to (61c) move relatively downward, and their tips (63a) to (63c) ) protrudes downward from the upper mold (42) and the upper end surface (13c) (1
3d) (13e) to press and fix the knuckle (13) into the fitting hole (25) of the lower mold (21). Even after the knuckle (13) is clamped by the clamping means (54), the upper mold (42) descends and its through hole (48b
) is slidably fitted to the upper end (13a) of the knuckle (13). At this time, the through hole (48b) of the upper mold (42)
) is provided with a cutting blade (50) on the inner circumferential surface of the Wil! When the hole (48b) is slidably fitted into the upper end (13a) of the knuckle (13), the cast burr generated at the upper end (13a) is removed by the cutting blade (50). Simultaneously with cutting off the cast burr on the knuckle (13), each milling cutter (66) moves forward while rotating, and at its forward end position, a predetermined end position of the side surface (13b) of the knuckle (13) becomes the cutting edge (68). The side surface (13b
) is removed. When the cast burr on the knuckle (13) is removed and a part of the black skin on the side surface (13b) is removed in this way, the clamp rods (61a) to (61c) of the clamping means (54) are used to tighten the knuckle (13). )
The upper mold (42) rises while being pressed by the knuckle (1) from the through hole (48b) of the upper mold (42).
3) Remove from the upper end (13a). After that, the press rod (65) rises, and this rise causes the mounting board (55) to move upward.
) is pushed up by the spring force of the support spring (56), the clamp rods (61a) to (61c) return to their original positions, and the upper mold (42) further rises, and
Each milling cutter (66) is retracted and returned to its original position.

In the above embodiment, the present invention was explained in the case where the device of the present invention was used to remove cast burrs generated on a knuckle, which is an automobile part, and to cut black scales on the surface, but the present invention is not limited to this. However, it can be widely used for removing burrs generated on the surface of casting workpieces of all shapes and for cutting black scales on the surface.

In addition, the lower die main body constituting the lower die is not limited to that shown in the above embodiments, and depending on the shape of the workpiece, the part where cast burrs occur and the surface to be cut by the milling cutter may be used. Any shape is sufficient as long as it can hold the workpiece with the parts exposed upward and sideways, and it may also be constructed by combining a plurality of split molds. Of course, the shape can also be changed.

〔Effect of the invention〕

According to the present invention, while the workpiece is held and fixed to the lower mold by the pressing force of the clamp rod, the cast burr generated on the surface of the workpiece is removed by the cutting blade of the upper mold, and at the same time, the black skin on the surface is removed. It is possible to cut the part using a milling cutter.Therefore, there is no need to provide a separate process for cutting the workpiece using a milling cutter, and the working time can be shortened and work efficiency can be greatly improved. Furthermore, since the workpiece is held and fixed by the lower die, the workpiece will not fall during work, and damage to the workpiece can be reliably prevented.

[Brief explanation of the drawing]

Fig. 1 is a front cross-sectional explanatory view showing an embodiment of the device of the present invention;
The figure is a partially omitted side sectional explanatory view. FIG. 3 is a front sectional explanatory view of the conventional device, and FIG. 4 is a side sectional explanatory view thereof. (13)...-Work, (21)...Lower die, (
42) - Upper die, (50) - Cutting blade, (61
a) (61b) (61c) --- Clamp rod, (66) (66) --- Milling cutter. Ward 3, Figure 4

Claims (1)

[Claims] (1) A lower mold that holds a workpiece that is installed in a fixed position and has burrs on its surface; Milling is carried out on the externally exposed side surface of the workpiece, which is provided with an upper mold having a cutting blade for cutting off cast burrs at the upper exposed part, and which is movable back and forth on the side of the upper mold, and which is held by the lower mold. A rotatable milling cutter that passes through the upper die and is arranged to be able to move up and down relative to the upper die, and is used to cut the workpiece held by the lower die when cutting burrs on the workpiece and milling the side surface of the workpiece. A composite trimming device consisting of multiple clamp rods.