CN201224128Y - Adjustable broach - Google Patents

Abstract

Disclosed is an adjustable reaming tool which mainly comprises a rotary handgrip, an adjusting plate and a tool body. The adjusting plate is arranged between the rotary handgrip and the tool body, and plane screw threads are arranged at the underside of the adjusting plate. The tool body comprises a connecting cylinder, a columnar tool installation frame, a tool, and a moveable tool post. Three tool installation grooves are arranged on the outer wall of the tool installation frame and every two tool installation grooves are at an angle of 120 degrees. The tool is provided with pointed teeth and is moveably fixed on the moveable tool post. Screw threads matching with the screw threads on the adjusting plate are arranged on the upside of the moveable tool post. The connecting cylinder is arranged above the tool installation frame and is provided with screw threads at the upper part, and a screw cap is screwed on the screw threads to connect the rotary handgrip, a pressure bearing, the adjusting plate and the tool body. When in use, a user only needs to hold the rotary handgrip and exert force to enable the reaming tool to rotate at the place to be bored after a circle center is chosen. The reaming tool is simple in structure, convenient to operate and adjust and can position accurately, and the size of the hole is adjustable. The adjustable reaming tool is good in molding, quick, safe and convenient and can greatly improve work efficiency.

Description

A kind of broad of regulating

Technical field

The utility model relates to a kind of instrument that is used on elastomeric material boring or reaming, is used in particular for the instrument of the boring or the reaming of explosion-proof cushion rubber under the coal mine.

Technical background

In Safety of Coal Mine Production, antiknock device performance quality directly has influence on the safety in colliery, the fault in case the inside of antiknock device is short-circuited, and flame can outwards overflow rapidly, will threaten the safety of mine.Therefore, the introducing device of cable also is an important link of explosion-proof performance quality, and cable entry is to carry out transition by O-ring seal, the external diameter size of cable has nothing in common with each other, this just needs the external diameter field fabrication of electrician according to cable, at present, and the electrician's knife boreholes that adopt in this work more, the size in aperture should not be controlled, fineness is not high, and technology can not satisfy job requirement, and speed is slow, the low labour intensity of efficient is big, hinders hand easily.

Summary of the invention

The purpose of this utility model is the deficiency that is mainly used to overcome the electrician's knife reaming, and a kind of instrument of novel reaming is provided, and this instrument can be realized accurate positioning, and pore size is adjustable, and forming, speed are fast, time saving and energy saving, the purpose of safe ready.

The utility model is achieved in that it mainly contains rotary handle, adjustment disk, cutter hub three parts and forms, and adjustment disk is located between rotary handle and the cutter hub, and a pressure bearing is installed on adjustment disk, is provided with flat thread below the adjustment disk; Cutter hub comprises connecting cylinder, columniform cutter installing rack, cutter and removable knife rest, on cutter installing rack outer wall, be provided with three cutter mounting grooves, each cutter mounting groove is 120 degree each other, cutter is a sharp tooth, cross section is circular-arc, be fixed on the removable knife rest, be provided with on removable knife rest with adjustment disk on the corresponding screw thread of screw thread; Connecting cylinder is located at above the cutter installing rack, and top is threaded, and has a nut to be spun on the screw thread, and rotary handle, pressure bearing, adjustment disk and cutter hub are linked together.

Described cutter mounting groove is the swallow-tail form mounting groove, and removable knife rest is the swallow-tail form knife rest, and corresponding with the dovetail groove of cutter mounting groove.

On the connecting cylinder external wall of upper portion, axially be arranged with two keyways, have two key bars to be inserted in the strong groove.

Good effect of the present utility model is: simple in structure, operate easy to adjustly, and can realize accurate positioning, pore size is adjustable, and forming, fast, the safe ready of speed can be increased work efficiency greatly.

Description of drawings

Accompanying drawing 1 is a structural representation of the present utility model; Accompanying drawing 2 is a cutter installing rack schematic diagram; Accompanying drawing 3 is the schematic diagram on cutter the is installed in removable knife rest; Accompanying drawing 4 is Fig. 3 left view; Accompanying drawing 5 is the adjustment disk schematic diagram; Accompanying drawing 6 is the upward view of Fig. 5

The specific embodiment

The utility model structure as shown in Figure 1, it mainly contains rotary handle 1, adjustment disk 3, cutter hub 5 three parts composition, adjustment disk 3 is located between rotary handle 1 and the cutter hub 5, a pressure bearing 2 is installed, the adjustment disk 3 following flat threads 4 (as accompanying drawing 5, shown in Figure 6) that are provided with on adjustment disk 3; Cutter hub 5 comprises connecting cylinder 9, columniform cutter installing rack 15, cutter 6 and removable knife rest 7, on cutter installing rack 15 outer walls, be provided with the cutter mounting groove 14 (as shown in Figure 2) of three swallow-tail forms, each cutter mounting groove 14 is 120 degree each other, cutter 6 is that sharp tooth is (as Fig. 3, shown in Figure 4), cross section is circular-arc, cutter 6 usefulness screws 16 are fixed on the removable knife rest 7, removable knife rest 7 is swallow-tail form knife rest (as shown in Figure 3), and corresponding with the dovetail groove of cutter mounting groove 14, be provided with on removable knife rest 7 with adjustment disk 3 on screw thread 4 corresponding screw threads 17.Connecting cylinder 9 is located at above the cutter installing rack 15, top is threaded 13, for preventing the relative motion between rotary handle 1 and the adjustment disk 3, on connecting cylinder 9 external wall of upper portion, axially be arranged with two keyways 12, there are two key bars to be inserted in the strong groove, there is a nut 10 to be spun on the screw thread 13, rotary handle 1, pressure bearing 2, adjustment disk 3 and cutter hub 5 are linked together; Be buckled with a trim 11 in the middle of on rotary handle 1.

During use, the size of bore diameter as required, rotation adjustment disk 3 makes and contracts in the cutter or overhanging adjusting tool diameter size, after determining, with holding rotary handle, makes an accurate selection of the center of circle in the place of needs boring and firmly rotates and get final product.

Claims (3)

1, a kind of broad of regulating, it is characterized in that: it is made up of rotary handle (1), adjustment disk (3), cutter hub (5) three parts, adjustment disk (3) is located between rotary handle (1) and the cutter hub (5), a pressure bearing (2) is installed, the following flat thread (4) that is provided with of adjustment disk (3) on adjustment disk (3); Cutter hub (5) comprises connecting cylinder (9), columniform cutter installing rack (15), cutter (6) and removable knife rest (7), is provided with three cutter mounting grooves (14) on cutter installing rack (15) outer wall, and each cutter mounting groove (14) is 120 degree each other; Cutter (6) is a sharp tooth, and cross section is circular-arc, is fixed on the removable knife rest (7), is provided with on removable knife rest (7) with adjustment disk (3) and goes up the corresponding screw thread of screw thread (4) (17); Connecting cylinder (9) is located at above the cutter installing rack (15), and top is threaded (13), has a nut (10) to be spun on the screw thread (13), and rotary handle (1), pressure bearing (2), adjustment disk (3) and cutter hub (5) are linked together.

2, the broad of regulating according to claim 1 is characterized in that: cutter mounting groove (14) is the swallow-tail form mounting groove, and removable knife rest (7) is the swallow-tail form knife rest, and corresponding with the dovetail groove of cutter mounting groove (14).

3, the broad of regulating according to claim 1 is characterized in that: axially be arranged with two keyways (12) on connecting cylinder (9) external wall of upper portion, have two key bars to be inserted in the strong groove (12).

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