CN2335725Y

CN2335725Y - Special boring cutter for undercutting trough of tube plate

Info

Publication number: CN2335725Y
Application number: CN 98238127
Authority: CN
Inventors: 褚国军
Original assignee: HONGYU MACHINE TOOL ACCESSORIES FACTORY SIPING CITY
Current assignee: HONGYU MACHINE TOOL ACCESSORIES FACTORY SIPING CITY
Priority date: 1998-06-29
Filing date: 1998-06-29
Publication date: 1999-09-01
Anticipated expiration: 2008-06-29

Abstract

The utility model discloses a special trough boring head for a hollow duct-blade trough of a tube plate, wherein, the use of the special trough boring head is matched with that of a radial drilling machine. The trough boring head is realized by that the internal of an axle hole 2 of a cutter handle 1 is provided with an upper slide block 3 and a lower slide block 4, a sliding sleeve 10 pushed by a lever is arranged on cutter handle 1, the upper slide block 3 is connected with the sliding sleeve 10, and the axial displacement of the upper slide block 3 controls the radial displacement of the lower slide block 4, a sliding seat 13 connected and fixed with the lower slide block 4 and a cutter rod 12. The trough boring head has the advantages of simple structure, convenient operation, reliable performance, high work efficiency, long service life, etc.

Description

The special-purpose slot boring head of tube sheet undercut

The utility model relates to a kind of machine tool accessories, particularly relates to a kind of special purpose machine tool annex that is used for slot boring on the radial drilling machine.

The tube sheet in the heat transmission equipment and the sealing of heat exchanger tube and anti-slip are that the heat exchanger manufacturing is thirsted for solving and still unsolved hard nut to crack always.Main cause is that the processing of tube sheet undercut can't realize, certainly will directly influence the product quality of tube-sheet heat exchanger like this.

The purpose of this utility model is to provide a kind of special-purpose slot boring head of tube sheet undercut of processing the tube sheet undercut.Thereby guarantee that heat exchanger tube is connected with the firm of tube sheet, sealing is strong, anti-slip, can effectively improve the quality of products.

Scheme of the present utility model is as described below: this utility model comprises handle of a knife, handle, knife bar, slide block, cover plate, locating piece, little axle, spring, pin, screw, nut, bearing and back-up ring, by on upper and lower two slide blocks that are provided with in the handle of a knife axis hole and the handle of a knife by the sliding sleeve of lever pushing and the top shoe that is connected with sliding sleeve, and by the axial displacement control sliding block of top shoe and the slide that is connected and fixed with sliding block, the radial displacement of knife bar realizes.Its lever be by lever bracket fixing on the handle of a knife with sell the shift fork that is provided with handle that is connected at this lever bracket one end and constitute.

The utility model makes this utility model can not only reliably realize goal of the invention, and has advantages such as simple in structure, high efficiency, long service life because the upper and lower slide block of having taked lever to advance reaches the structures such as knife bar that move with sliding block.

Below in conjunction with accompanying drawing scheme of the present utility model is described in further details:

Fig. 1 is the overall structure cutaway view of the special-purpose slot boring head of tube sheet undercut;

Fig. 2 is an A-A cutaway view in the overall structure of the special-purpose slot boring head of tube sheet undercut;

Fig. 3 is the part-structure outline drawing of the special-purpose slot boring head of tube sheet undercut:

Fig. 4 is a B-B cutaway view in the part-structure outline drawing of the special-purpose slot boring head of tube sheet undercut.

By Fig. 1-special-purpose slot boring head of tube sheet undercut shown in Figure 4 is to establish upper and

lower slide block

3,4, two

slide blocks

3,4 vicinals inclined-plane each other in the axis hole 2 of handle of a knife 1.(being outer surface) is fixed with lever bracket 5 on handle of a knife 1, sells the lever that 6 shift forks 8 that are connected with handle 7 are formed.The shift fork 8 both sides correspondences of this lever are provided with little axle 9.Also be provided with sliding sleeve 10 on the handle of a knife 1 of lever bracket 5 bottoms, sliding sleeve 10 is connected by the interior set top shoe 3 of a radial peg 11 and axis hole, and under leverage, the guide rail that top shoe 3 can form in axis hole 2 moves axially.Handle of a knife 1 end is a garden dish type.The axial knife bar 12 that connects is with slide 13 in its outside on the sliding block 4 in garden dish type handle of a knife 1 axis hole 2, and is fixed as a whole back and the flexible connection of handle of a knife 1 end with it by nut 14 and screw 15.One radial hole and hole inner spring 16 are arranged on the slide 13, and a cover plate 17 is fixed in the outside of corresponding spring 16, has the gap between cover plate 17 and slide.Can slide 13 is spacing, meanwhile at the also corresponding back-moving spring 20 that is connected on locating piece 18 and the pin 19 that is provided with on handle of a knife 1 part between sliding sleeve 10 and dish type handle of a knife 1 end, garden.

The utility model can directly or add the reducing tapered sleeve and be contained on the drilling machine, earlier tool setting is set in the tubesheet holes for the treatment of boring before the work, knife bar 12 front ends import broach shell, lathe locking, lifting knife bar 12 takes off broach shell, in the knife bar 12 inlet tube plate holes, depress handle 7 after the driving again, utilizing sliding sleeve 10, pin 11 to drive that top shoes 3 move down is axial displacement.Promote to move on the guide rail that sliding block 4 makes sliding block 4 form along the axis hole 2 of handle of a knife 1 together with slide 13 by the inclined-plane again, thereby make knife bar 12 radial displacements.Knife bar 12 1 ends are fixed two boring cutters, can realize the processing of two grooves up and down simultaneously.

Claims

1, the special-purpose slot boring head of a kind of tube sheet undercut, comprise handle of a knife (1), handle (7), knife bar (12), slide block (3), (4), spring (16), (20), cover plate (17), locating piece (18), little axle (9), pin (6), (11), (19), screw (15), nut (14), bearing and back-up ring, it is characterized in that: be provided with in the axis hole (2) of handle of a knife (1), following two slide blocks (3), (4), on handle of a knife (1), be provided with the sliding sleeve (10) of lever pushing and the top shoe (3) that is connected with sliding sleeve (10), and by the axial displacement control sliding block (4) of top shoe (3) and the slide (13) that is connected and fixed with sliding block (4), the radial displacement of knife bar (12).

2, the special-purpose slot boring head of tube sheet undercut according to claim 1 is characterized in that: lever is to be gone up fixing lever bracket (5) and sold the shift fork that is provided with handle (7) (8) formation that (6) are connected at this (5) one end by handle of a knife (1).

3, the special-purpose slot boring head of tube sheet undercut according to claim 1, it is characterized in that: slide (13) is provided with the spring (16) in a radial hole and the hole, the outside securing cover plate (17) of corresponding spring (16) exists gap and slide (13) and knife bar (12), sliding block (4) to be connected and fixed between cover plate (17) and slide (13).

4, the special-purpose slot boring head of tube sheet undercut according to claim 1, it is characterized in that: the end of handle of a knife (1) is the garden dish type, corresponding respectively locating piece (18) and the spring (20) that is connected by pin (19) of being provided with on handle of a knife (1) part between this handle of a knife (1) end and the sliding sleeve (10).