ES2418029B1 - Coupling device - Google Patents

Abstract

A coupling device that includes a coupling block (20) mounted on the rotating tool turret (10) to position the tool seat (11). A bolt (30) extends through the coupling block (20) and is screwed to the rotating tool turret (10) to hold the coupling block (20) in place and make the coupling block (20) firmly attach to the tool seat (11). There is a locking member (40) mounted on the coupling block (20) to prevent the bolt (30) from detaching from the coupling block (20).

Description

Coupling device.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a coupling device and, more specifically, to a coupling device that can be easily disassembled and taken from the bottom of a hole.

2. Description of the Related Technique

As is well known, with reference to Figures 8 to 10, a rotating tool turret (10) includes multiple tool seats (11) mounted on the rotating tool turret (10). The rotating tool turret 10 (10) includes multiple first holes (12) and second holes (13), respectively, made therein, communicating every second hole (13) with one of the corresponding first holes (12), and there is a threaded hole (131) defined centrally and longitudinally at the bottom of each of the second holes (13). Each tool seat (11) is partially received in one of the corresponding first holes (12). The tool seat (11) is formed with an coupling portion (111) oriented towards the second hole (13). 15 For the positioning of the tool seat (11) a coupling block (14) is mounted in the second hole

(13) for a firm and secure attachment to the tool seat (11) and to retain the tool seat (11) in place. The coupling block (14) has an coupling portion (141) firmly coupled to that of the tool seat (11). There is a sunken hole (142) defined eccentrically in the coupling block (14) that extends through the coupling block (14). A bolt (15) extends with the ability to turn through the hole

20 sunk (142) and screwed into the threaded hole (131) to firmly attach the two coupling portions (111, 141) to each other to secure the tool seat (11). There is a C-ring (143) arranged horizontally in the sunken hole (142) to prevent the bolt (15) from detaching from the coupling block (14) after being loosened to remove the tool seat (11) from the turret of rotating tools (10).

Referring to Fig. 9, when replacing the coupling block (14), the bolt (15) is loosened and removed from the turret of

25 rotating tools (10). However, the coupling block (14) is removed from an opening of the second hole (13) after the bolt (15) has been completely loosened. Thus, it is difficult to separate the coupling block (14) with the bolt (15) from the rotating tool turret (10) even using an elongated tool, since the conventional coupling block (14) has no structure that can connect to a tool when removing the conventional coupling block (14).

The present invention has been produced in order to mitigate and / or obviate the disadvantages of the conventional coupling block for a tool seat of a rotating tool turret.

SUMMARY OF THE INVENTION

The main objective of the present invention is to provide an improved coupling block that can be easily separated from the bottom of a hole using an elongated tool.

To achieve this objective, in accordance with the present invention, the coupling device includes a coupling block mounted on the rotating tool turret for positioning the tool seat. A bolt extends through the coupling block and is screwed into the rotating tool turret to keep the coupling block in place firmly attached to the tool seat. A locking member is mounted on the coupling block to prevent the bolt from detaching from the coupling block.

A careful reading of the detailed description, with appropriate references to the attached drawings, will allow to easily understand other benefits and additional advantages of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a perspective view of a coupling block for a tool seat of a rotating tool turret in accordance with the present invention;

Fig. 2 is an exploded perspective view of the coupling block of Fig. 1;

Fig. 3 is a sectional view of the coupling block of Fig. 1;

Fig. 4 is a schematic perspective view of a rotating tool turret with a tool seat mounted therein in accordance with the present invention;

Fig. 5 is a sectional view to show the coupling block of the present invention firmly mounted on the rotating tool turret;

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Fig. 6 is a first operational view of the coupling block according to the present invention;

Fig. 7 is a second operational view of the coupling block according to the present invention;

Fig. 8 is a schematic view of a conventional coupling block for a tool seat of a rotating tool turret according to the prior art;

Fig. 9 is a schematic sectional view of the conventional coupling block according to the prior art; Y

Fig. 10 is an operational view of the coupling block according to the prior art.

DETAILED DESCRIPTION OF THE INVENTION

With reference to Figures 4-7, a conventional rotating tool turret (10) has multiple tool seats (11) mounted thereon and each tool seat (11) is used to mount different tools (not shown). The rotating tool turret (10) has multiple first holes (12) made in it, each tool seat (11) being partially received in one of the corresponding first holes (12), as well as multiple second holes (13), each communicating one of the second holes (13) with one of the corresponding first holes (12). Each tool seat (11) is formed with an coupling portion (111) oriented towards the corresponding second hole (13). Each second hole (13) has a coupling device mounted therein to firmly position the tool seat (11). As usual, the second hole (13) has a depth much greater than the total length of the coupling device.

Referring to Figures 1-7, the coupling device according to the present invention includes an coupling block (20) mounted in the corresponding second hole (13), a bolt (30) extending through the block of coupling (20) and a locking member (40) mounted on the coupling block (20) to prevent the bolt (30) from detaching from the coupling block (20).

The coupling block (20) includes a through hole (200) defined eccentrically therein. The through hole (200) is divided into a first section (21) and a second section (22), the first section (21) having a diameter larger than that of the second section (22) so that a shoulder ( 221) between the first section (21) and the second section (22). The first section (21) has a threaded portion (211) formed on its inner periphery near an opening of the through hole (200). An inclined coupling portion (24) corresponding to the second portion (22) of the through hole (200) is formed on an outer periphery of the coupling block (20).

The bolt (30) has a head (31) and a threaded rod (32) that extends centrally and longitudinally from the head (31), the head (31) being embedded in the backrest (221) and the threaded rod (32) extending ) through the second section (22) of the through hole (200). As a result, the bolt (30) can rotate relative to the coupling block (20). The head (31) has a polygonal hole (311) defined centrally and longitudinally therein.

The locking member (40) is formed with a threaded outer periphery (41) that is screwed into the threaded portion

(211) of the first section (21). The blocking member (40) has a threaded polygonal hole (43) defined therein and extending therethrough, the distance between two opposite sides of the polygonal hole (43) of the blocking member (40) being greater than one length of a diagonal of the polygonal hole (311) in the head (31) of the bolt (30).

When mounting the coupling device on the rotating tool turret (10) to fix the tool seat (11), the coupling block (20) with the bolt (30) and the locking member (40) is inserted into the second hole (13) and constitutes the coupling portion (24) of the coupling block (20) corresponding to that of the tool seat (11). A key (70) extends through the threaded polygonal hole (43) and into the polygonal hole (311) such that the coupling block (20) gradually moves towards the bottom of the second hole (13) to make that the two coupling portions (111, 24) are firmly embedded in each other to retain the tool seat

(11) in place when the bolt (30) is rotated relative to the coupling block (20) and the threaded rod (32) is screwed into the threaded hole (131) of the rotating tool turret (10).

When replacing the tool seat (11), the operator only has to loosen the bolt (30) to separate the coupling portion (24) of the coupling block (20) from the coupling portion (111) of the tool seat (eleven). Then the operator can easily separate the tool seat (11) from the rotating tool turret (10).

When disassembling the coupling device according to the present invention, the key (70) passes through the threaded polygonal hole (43) of the locking member (40) and engages in the polygonal hole (311) of the bolt (30) . The operator can loosen the bolt (30) by turning the wrench (70) to completely separate the threaded rod (32) from the bolt (30) from the threaded hole (131) of the rotating tool turret (10). Finally, an elongated tool (60) is inserted, including a threaded rod (61) that extends longitudinally from it, into the

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second hole (13) and the threaded rod (61) is screwed into the threaded polygonal hole (43). Then the operator can pull the coupling block (20) with the bolt (30) and the locking member (40) with the elongated tool

(60) which is longitudinally connected to the blocking member (40).

Although the invention has been explained in relation to its preferred materialization, it should be understood that it is possible to make many other modifications and variations without deviating from the spirit and scope of the invention claimed herein.

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Claims (3)

1. A coupling device consisting of: an coupling block (20) that includes a through hole (200) eccentrically defined therein and divided into a first section (21) and a second section (22), the first section (21) having a diameter greater than that of the second section (22) such that a backrest is formed between the first section (21) and the second section (22), and an inclined coupling portion (24) formed on the outer periphery of the coupling block (20) near the second section (22) of the through hole (200). The inclined coupling portion (24) is adapted to firmly engage and hold a tool seat (11) in place when the coupling block (20) is positioned on a rotating tool turret (10); a bolt (30) extending through the coupling block (20), with a head (31) and a threaded rod (32) extending centrally and longitudinally from the head (31), the head (31) engaging against the backrest and extending the threaded rod (61) through the second section (22) of the through hole (200) so that the bolt (30) can rotate relative to the coupling block (20) and the threaded rod ( 61) is adapted to be screwed into the rotating tool turret (10), the head (31) having a polygonal hole (311) defined centrally and longitudinally therein; Y a locking member (40) mounted in the first section (21) of the through hole (200) in the coupling block (20) to prevent the bolt (30) from detaching from the coupling block (20), characterized in that it has the blocking member a threaded polygonal hole (43) defined therein, extends therethrough and the distance between two opposite sides of the threaded polygonal hole (43) of the blocking member (40) is greater than a diagonal length of the polygonal hole (311) of the bolt head (31).

2.

The coupling device according to claim 1, characterized in that the first section (21) of the through hole (200) of the coupling block (20) has a threaded portion (211) formed in an internal periphery thereof near an opening of the through hole (200).

3.

The coupling device according to claim 2, characterized in that the locking member (40) is formed with a threaded outer periphery (41) that is screwed to the threaded portion of the first section (21) of the through hole (200) of the coupling block (20).