JPS60123207A - Drill guide type collar forming device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a trill-guided collar forming device, the device having a lower end portion fitted into a connecting means for rotatably connecting a main body and a tool. an axial drive shaft, a supporting and locating means for locating the workpiece, and a moving means for moving the rotatable shaft and the supporting and locating means relative to each other in the axial direction; The supporting force is of a structure that is transmitted via the moving means.

[Conventional technology]

U.S. Patent Nos. 3,592,038 and 371,808
No. 3 discloses a drill collar forming device of this type. A further developed embodiment of the color head, which can be suitably adopted in the present invention, is disclosed in U.S. Patent No. 441,348.
No. 5 took the lead. These prior art devices are fast, efficient and versatile in producing large numbers of collars or flanges even in continuous mass production.

[Problem that the invention seeks to solve]

However, these conventional devices, including their associated drives, are relatively expensive and heavy, and therefore
C(heating % piping, air-
(heating, piping, air conditioning)) Installation does not match the equipment. Therefore, U.S. Pat.
Manual collar forming devices have been developed, such as those pioneered by No. 38,734 and No. 3,683,657, in which a separate drilling device is used to drill and then pass through to form the collar or flange. However, due to inadequate guidance or alignment between the device and the tube during both drilling and collar formation, these manual conventional devices are slow and inconvenient, and the quality of the collars produced is poor.

As far as color formation is concerned, U.S. Pat. No. 41,787
An attempt was made to solve this problem with the collar forming device holder pioneered by No. 86. However, this type of support means is not suitable for supporting further drilling units. Furthermore, the design of the collar forming device is such that it cannot be operated by rotating machinery. Work with these devices is slow and slow.

[Means for solving problems]

The object of the present invention is to operate with mechanical power of another drilling machine, etc.
To provide a drill-guided collar forming device that provides quick and convenient operation and high-quality workpieces, the device is simple, lightweight, low acid, and is standard equipment for all H P A C installations. Compatible.

This object is achieved on the basis of the features of the invention described in the patent claims.

The invention will now be described in more detail with reference to the accompanying drawings.

[Examples and effects]

The body 1 is provided with an elongated plain bearing surface 6 which fits into the bearing bush and provides a guiding surface for the shaft 3.

The shaft 3 is rotatable and axially movable in the guide plane provided by the bearing surface 6. Axis 3 for rotational drive
The top end of is designed so that it can be connected directly or via an adapter element 5 to a rotating machine such as a drilling machine.

The lower end of the shaft 3 fits into a rigid coupling means 4 which connects the shaft of the tool and drives the tool in rotation.

Either separate cutting and forming tools or a combination of both, such as the tools disclosed in US Pat. No. 4,413,485, can be used in practicing the invention. By using the rigid coupling means 4, a cough machine or a tool can be quickly coupled and detached from the lower end of the shaft 3.

The workpiece 10, by way of example a tube to be collar-formed, is properly positioned by support and positioning means 7 mounted on the body 1 at a desired position relative to the central axis 8 of the guide surface 6, as shown in FIG. , and the central axis 8 is the axis 9 of the tube to be collared.
and the axes 8 and 9 are at right angles to each other.

The support and positioning means 7 are designed according to general positioning and mounting principles to meet the requirements of any given workpiece. The support and positioning means 7 are also removable from the body 1, so that a support and positioning means suitable for a given workpiece 10 can be selected. The guide surface 16 of the support and positioning means 7 for the workpiece 10
and 17, the workpiece 1 is
0 is more securely supported and placed.

In the example of FIG. 1, the support and positioning means 7 can be equipped with separate auxiliary means, such as a drill guide adjacent to the workpiece 10. In this way, the drill guide is arranged coincident with the guide surface of the support and positioning means, for example in accordance with the semicircular arc 11 of FIG.

In the example shown in FIG. 1, before tightening the coupling means 4 of the shaft 3, it is screwed into the bore of the tube, for example, like some collar-forming devices (see US Pat. No. 3,538,734). It is also possible to use tools that do not come loose.

In order to convert the rotary movement achieved by mechanical power into an axial movement of the shaft 3 in the direction away from the workpiece 10, for example during the collar forming stage, the top end of the shaft 3 has an external fitting which engages with the moving nut 2. A thread 12 is provided. In this embodiment, the nut 2 is a single piece and is continuously engaged with the thread 12. The body 1 is provided with a recess 15 for receiving the nut 2.

The bottom 14 of the recess 15 serves as the opposing surface against which the lower end 13 of the nut 2 comes into contact during the collar forming process. Opposing surfaces 13 and 1
The transmission of axial support force, which is recognized by collar formation, is as follows.
The friction between the surfaces 13, 14 forces them together with sufficient pressure to prevent the nut 2 from rotating with the shaft 3. The thread 12 thus allows the shaft 3 and the tool attached thereto to be moved axially relative to the nut 2, the body 1 and the support and positioning means 7, and also relative to the workpiece 1-0.

[Effect]

The operation and function of the device is as follows.

When the working direction is towards the workpiece 10, the nut 2 has thread 1
Screw together with the upper part of 2. This can be achieved manually or by braking the nut 2 with a special friction brake when the shaft 3 is driven by a rotating machine. The naso 1-2 can be locked to the shaft 3 by the frictional force of the thread, or by increasing the frictional force of the thread by the force of a spring, or by another fastener. The tool connected to the shaft 3 moves upwards in the sliding sleeve 6, and the device with it moves onto the workpiece 1.
0 to the desired position. At this starting position, face 1
3 and 14 are spaced apart from each other. However, the tip of the nut 2 is designed to prevent foreign matter from entering between the nut 2 and the main body 1.
It is desirable that it be located below the upper edge of the recess 15 of the main body 1. The shaft 3 is driven by a drilling machine or the like connected to the top end of the shaft 3, and a hole is formed in the workpiece 10. Feeding is accomplished by hand pushing. If necessary, move the axis 3 to the workpiece 10.
The tool is changed at the connection means 4, which is rigid at the lower end of the shaft 3, and the subsequent working steps are carried out, for example after drilling the thread. If the desired working direction moves away from the workpiece 10, the opposing surfaces 13 and 14 of the nut 2 and the body 1, respectively, collide with each other and the shaft 3 begins to rotate relative to the naso 1-2 and thread 12, causing the workpiece to move away from the workpiece 10. The shaft 3 is driven away from the object 10.

The design and operation of the moving nut 2 described above is only one example. In another embodiment, the transfer nut 2 can be provided with two intersecting partially communicating holes, one with a ridge and the other without a ridge (FIG. 3). ). A lever extending from the body can be used to rotate the moving nand into or out of thread 12.

In a third embodiment, the moving nand is made of two sections, the threaded connection of which can be released by pulling the sections apart from each other and engageable by pressing the sections together. What is important about the action of the moving nand is that it produces an axial movement of the shaft 3 on which the tool is mounted relative to the body 1. On the other hand, the support and arrangement means 7
The shaft 3 is supported and guided relative to the body 1 by means of a sliding bearing surface 6 while fixed against the body 1 . Because of this arrangement,
A device is obtained which can be actuated by some external rotary drive mechanism, such as a drilling machine, which is part of the standard equipment.

〔Effect of the invention〕

The mechanically driven drill guide collar forming device shown in FIG.
It will be noted that it is structurally simple.

It makes no difference what kind of cutting or forming tool is used.

If it is desired that the torque produced by the collar forming is not transmitted to the body of the rotating machine, in other words that there is no need to create a counter torque manually, there should be a It is possible to fit a box-shaped connecting means etc. to firmly connect the two. The transmission between the rotary machine and the shaft 3 therefore takes place in the longitudinal direction and the sliding movement occurs in the axial direction. Note that transmission can also be achieved by connecting the shaft 3 to a rotating machine in a manner that does not allow it to slide in the axial direction. Thus, the connection between the body 1 and the rotating machine takes place in an axial sliding manner, but not in a rotational manner.

The nut 2 need not be non-rotatable at any stage with respect to the shaft 3 or the body 1. The essential thing is Nando 2
There is a rotational speed difference between the shaft 3 and the shaft 3, so that the nut 2 is rotated in an adjustable manner from the shaft 3, depending on whether the shaft 3 is in a low or high position with respect to the workpiece 10 and at the same time with respect to the body 1. It can rotate within the body 1 fast or slow.

If desired, the rotational speed of the nut 2 can be reduced by manual or external control means to move the nut 2 to the upper and lower ends of the thread 12 by means of a rotary machine. In this way, the direction of movement of the nut 2 with respect to the shaft 3 is determined depending on the direction of rotation of the rotating machine.

If desired, the device can be provided with a screw thread having a plurality of different pinches. For example, replace the shaft 3 and nut 2. Alternatively, this is possible, for example, by using shafts 3 with different pinches in different parts and nuts 2 with different pitches.

[Brief explanation of drawings]

FIG. 1 is a partial side view of a device according to an embodiment of the present invention. FIG. 2 is a sectional view taken along line nn in FIG. 1. Figures 3a to 3C are a plan view, a side view, and a cross-sectional view taken along the line {circle around (2)}C--C, respectively, of another embodiment of the moving NAND. 1... Main body, 2... Moving Nand, 3'... Axis, 4
. . . Connection means, 5. Adapter element, 6. Sliding bearing is a surface, 7. Supporting and arranging means, 8. Center axis, 9. Axis, 10. Workpiece. , 11... Semicircular arc, 12... Outer thread, 13... Lower end of nut 2, 14... Bottom of recess 15, 15... Recess, 16
...Information surface, 17...Information surface. Patent Applicant C.A. Cellulatius Owai a -- mc -1 mountain r3b 2 Lbr3sr 2 EEi:3

Claims (6)

[Claims] (1) A drive shaft (the lower end of which fits into a connecting means (4) for rotatably connecting the main body (1) and the tool) (
3), a supporting and locating means (7) for locating the workpiece (10), and moving the rotatable shaft (3) and the supporting and locating means (7) relative to each other in the direction of the axis (3). a drill-guided collar-forming device, comprising moving means (12, 2) for a stopper, through which the axial support force created by the lifting force is transmitted; A rotatable shaft (3) is axially displaceably guided in the body (1), said displacement means (12, 2) being connected to a thread (3) of the shaft (3).
12) during the ascending phase of the shaft (3).
The drill-guided collar-forming device is characterized in that it comprises a moving nand (2) resting on the support and positioning means (7), which are fixed to the body (1). (2) The drill guide according to claim 1, wherein the elongated cylindrical sliding bearing for guiding the rotating shaft (3) by the main body (11) has a surface (6). Mold collar forming device. (3) The single moving Nand (2) is connected to the screw thread (1) of the shaft (3).
2) A drill-guided collar-forming device according to claim 1 or 2, characterized in that it is in continuous engagement with the drill-guided collar forming device. (4) providing contact surfaces (13, 14) on the moving nand (2) and the main body (11) that come into contact with each other when rising and have a frictional force created between them by the axial support force; Said friction force slows down the movement of the nand (2) relative to the body (1) during the upward movement, so that said shaft (3) rotating relative to the nand (2) is rotated relative to the support and positioning means (7). 4. A drill-guided collar-forming device according to claim 3, characterized in that it moves similarly to the nut (2) and the body (1) under the action of a screw thread (12). (5) the support and positioning means (7) are arranged to work on the rotary shaft (3) in such a way that each axis of the workpiece (10) and the shaft (3) is in the desired position relative to each other; Drill-guided collar forming device according to claim 1 or 2, characterized in that it includes means for positioning and tightening the object 00). (6) The trill-guided collar according to claim 5, characterized in that the support and positioning means (7) are capable of installing accessories for adjusting the tool and improving the quality of the workpiece. Forming device.