CN203495651U - Expanding tool bit - Google Patents

Abstract

The utility model discloses an expanding tool bit. The expanding tool bit comprises a tool bit seat, a main shaft and a main shaft box body, wherein a tool bit body is arranged at one side of the main shaft box body, an oil cylinder is arranged at the other side of the main shaft box body and is installed on the main shaft box body through an oil cylinder connecting plate and an oil cylinder supporting rod, a central through hole is formed in the main shaft, a transmission rod is arranged in the central through hole, one end of the transmission rod is connected with a piston rod of the oil cylinder through a bearing box, the other end of the transmission rod is connected with a rack, the rack is meshed with a gear installed on the tool bit body, and the tool bit seat is connected with the tool bit body through a toothed sliding seat. The expanding tool bit has the advantages that tool alignment is convenient, machining accuracy is high, clamping machining can be achieved in one shot, thereby being capable of being widely used for machining large-eccentric-amount concave pit class or groove hole class parts.

Description

a knife head

technical field

The utility model belongs to the technical field of machinery and relates to a processing device capable of processing grooves, in particular to a spreading cutter head for large eccentricity pits and grooves and holes.

Background technique

At present, in the mechanical processing on the market, there are generally two methods for the processing of large eccentric hole parts or eccentric groove parts. It is processed by boring and milling machine with forming tool or numerical control. The former tooling is re-clamped, the adjustment time is long, the efficiency is low, and due to the large inertia of the fixture, it can only be processed at low speed; the latter is easy to form vibration marks due to the large cutting area, resulting in poor surface quality and low processing efficiency. The CNC technology controls the walking track of the cutter head. Due to the presence of cutter lines when the cutter is moving, the surface quality of the product is poor, and it cannot even meet the requirements of the product for surface texture.

Contents of the invention

The purpose of the utility model is to provide a cutter head with convenient tool setting, high processing precision and one-time clamping and processing.

In order to achieve the above-mentioned purpose, the utility model develops a cutter head, which includes a cutter head seat, a main shaft and a main shaft box. One side of the main shaft box is provided with a cutter head body, and the other side is provided with an oil cylinder, and the oil cylinder passes through the oil cylinder. The connecting plate and the oil cylinder support rod are installed on the main shaft box, the main shaft is provided with a central through hole, and a transmission rod is arranged in the central through hole, one end of the transmission rod is connected with the piston rod of the oil cylinder through the bearing box, and the other end is connected with the piston rod of the oil cylinder. The rack is connected, and the rack is engaged with a gear mounted on the cutter head body, and the cutter head seat is connected with the cutter head body through a toothed sliding seat.

The main shaft is positioned through the main bearing, the front end cover of the main shaft, the rear end cover of the main shaft, the inner spacer of the bearing, and the outer spacer of the bearing, and is installed in the main shaft barrel through the compression nut, and the main shaft is installed in the main shaft box through the lock nut .

A guide sleeve is provided on the rack, and the guide sleeve is connected with the cutter head body.

The bearing box is connected with the piston rod of the oil cylinder through a coupling.

Two travel switches are arranged on the connecting plate of the oil cylinder.

The rear end of the main shaft is provided with a pulley.

In the above technical solution, since a transmission rod is provided in the spindle box, one end of the transmission rod is connected to the piston rod of the oil cylinder through the bearing box, and the other end is connected to the rack, and the rack is engaged with the gear installed on the cutter head body. , the cutter head seat is connected with the cutter head body through the toothed sliding seat. The oil cylinder pushes the rack through the transmission rod, and then drives the gear to rotate, and the gear drives the toothed slide to slide on the cutter head body, thereby realizing the feed of the cutter. The speed of the feed of the cutter can be realized through the speed regulating valve of the oil cylinder. Therefore, the cutter head body can be fed accurately and work quickly, and can be widely used in the processing of parts with large eccentricity such as pits and grooved holes.

Description of drawings

Fig. 1 is a schematic structural view of a spreading cutter head of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, a kind of expanding cutter head of this utility model is described in further detail.

As can be seen from Fig. 1, the cutter head of the present utility model comprises a cutter head seat 1, a main shaft 7 and a main shaft housing 9, one side of the main shaft housing 9 is provided with a cutter head body 4, and the other side is provided with an oil cylinder 8, and the The oil cylinder 8 is installed on the main shaft housing 9 through the oil cylinder connecting plate 81 and the oil cylinder support rod 82. The main shaft 7 is provided with a central through hole, and a transmission rod 2 is arranged in the central through hole, and one end of the transmission rod 2 passes through the bearing The box 71 is connected with the piston rod of the oil cylinder 8, and the other end is connected with the rack 5, the rack 5 meshes with the gear 8 installed on the cutter head body 4, and the cutter head seat 1 is connected with the cutter head through the toothed slide seat 3. Body 4 is connected.

When using the utility model, the center height of the cutter head body 4 is adjusted by adjusting the cutter head seat 1 first, and then the power is provided by the oil cylinder 8, so that the transmission rod 2 pushes the rack 5 to rotate, and then drives the gear 8 to rotate. Drive the cutter head body 4 to slide on the toothed sliding seat 3, thereby realizing the feeding of the cutter head body 4. The feed speed of the spreading knife can be realized through the speed regulating valve.

In this embodiment, the rack 5 is provided with a guide sleeve 6, and the guide sleeve 6 is connected with the cutter head body 4 to realize rapid positioning and guidance during movement; the shaft of the gear 8 is installed on the cutter head body 4, the correct meshing and rotation with the rack 5 is realized; the main shaft 7 is positioned through the main bearing 73, the main shaft front end cover 74, the main shaft rear end cover 75, the bearing inner spacer 76, and the bearing outer spacer 77. And be installed in main shaft barrel 78 li by compression nut 79, main shaft barrel 78 is installed in main shaft housing 9 li by lock nut 80, can realize the adjustment of main bearing 73 play, further improve accuracy; Two stroke switches 10 respectively The bracket is installed on the oil cylinder connecting plate 81 to realize the control of the stroke and movement of the oil cylinder 8, combined with the stroke adjustment screw 42 on the cutter head body 4 to ensure the accuracy of the size of the cutter, and further improve the accuracy of the cutter head body 4 when it is working. Greatly improve product quality.

As a modification, the cutter head of the present invention can be directly installed on the main shaft of the machine tool through the connecting flange 41, that is, the main shaft box 9 directly utilizes the main shaft box of the machine tool. Also can expand cutter head of the present utility model be installed on the special-purpose machine tool, two-stroke switch 10 is connected to its control circuit, motor is connected with belt pulley 11 by belt, can realize the expansion of processing function.

Claims (6)

1. open up cutter head for one kind, comprise tool tip (1), main shaft (7) and main spindle box body (9), one side of main spindle box body (9) is provided with body of tool bit (4), opposite side is provided with oil cylinder (8), it is characterized in that, described oil cylinder (8) is by oil cylinder connecting plate (81), oil cylinder support bar (82) is arranged on main spindle box body (9), described main shaft (7) is provided with central through hole, in this central through hole, be provided with drive link (2), one end of drive link (2) is connected with the piston rod of oil cylinder (8) by bearing box (71), the other end is connected with tooth bar (5), tooth bar (5) and gear (8) engagement being arranged on body of tool bit (4), described tool tip (1) is connected with body of tool bit (4) by profile of tooth slide (3).

2. exhibition cutter head according to claim 1, it is characterized in that, described main shaft (7) through base bearing (73), front-end of spindle lid (74), rear-end of spindle lid (75), bearing inner spacing collar (76), bearing outer separator (77) is located and pass through clamp nut (79) to be arranged on main shaft cylinder (78) inner, it is inner that main shaft cylinder (78) is arranged on main spindle box body (9) by locking nut (80).

3. exhibition cutter head according to claim 1, is characterized in that, described tooth bar (5) is provided with fairlead (6), and this fairlead (6) is connected with described body of tool bit (4).

4. exhibition cutter head according to claim 1, is characterized in that, between the piston rod of described bearing box (71) and oil cylinder (8), by shaft coupling (72), is connected.

5. according to the exhibition cutter head described in claim 1,2,3 or 4, it is characterized in that, described oil cylinder connecting plate (81) is provided with two travel switches (10).

6. according to the exhibition cutter head described in claim 1,2,3 or 4, it is characterized in that, the rear end of described main shaft (7) is provided with belt pulley (11).

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