Drilling tool bit compression automatic return device
A self-returning and hole-opening knife technology, which is applied to feeding devices, metal processing machinery parts, metal processing equipment, etc., can solve problems such as damage to the hole-opening knife head, low machining accuracy, and inconvenient switching between forward and backward knives. No-load stroke, the effect of improving the effect
Inactive Publication Date: 2018-06-01
潍坊江钢机械有限公司
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Problems solved by technology
Because the machining accuracy of the rack and pinion transmission mechanism of the drilling machine is low, there will be a delay action when the knife advances and retreats. The knife retraction drive will only be performed after the no-load stroke. In the actual use of the drilling machine, this kind of knife advance and retreat conversion will be very frequent, so the existence of the above-mentioned delay action will make the knife advance and retreat conversion work very inconvenient, and sometimes even occur. Affect the drilling effect, damage the hole cutter head, etc.
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[0011] The present invention will be further explained below in conjunction with the drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those of ordinary skill in the art can realize that the described embodiments can be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature, and are not used to limit the protection scope of the claims.
[0012] Such as figure 1 As shown, the self-returning device for the tapping cutter head compression includes a lifting drive shaft that is rotatably mounted on the lifting seat 2 of the tapping machine, the lifting drive shaft is provided with a lifting gear 5, and the lifting pole of the tapping machine 3 is provided with a lifting rack 6 corresponding to the lifting gear 5, the above-mentioned structure is a c...
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The invention discloses a drilling tool bit compression automatic return device. The device comprises a lifting driving shaft mounted on a lifting base of a drilling machine. Lifting gears are arranged on the lifting driving shaft. Lifting racks corresponding to the lifting gears are arranged on vertical lifting rods of the drilling machine. A return spring is arranged on each vertical lifting rodand located between a machine base of the drilling machine and the lifting base. During cutter feeding, the tooth profile curved surfaces of the lifting gears abut against the upper tooth surfaces ofthe lifting racks. When cutter feeding is stopped, the tooth profile curved surfaces of the lifting gears are made to abut against the upper tooth surfaces of the lifting racks through spring force of the return springs all the time. When cutter retracting is needed, the tooth profile curved surfaces of the lifting gears can be made to abut against the upper tooth surfaces of the lifting racks through spring force all the time without making contact with the lower tooth surfaces of the lifting racks. Accordingly, the no-load travel during conversion of cutter feeding and retracting is eliminated remarkably, and the drilling effect is improved.
Description
Technical field [0001] The invention relates to the technical field of a hole-opening machine, in particular to a self-returning device for pressing a hole-opening cutter head. Background technique [0002] The hole tapping machine is a device for making holes on the side wall of the pipeline. Its structure mainly includes a lifting pole fixedly installed on the machine base, a lifting seat slidably installed on the lifting pole, and a drilling drive motor and a drilling tool bit installed on the lifting seat. Hole structure, the lifting seat is equipped with a lifting drive shaft, and the lifting drive shaft and the lifting pole are driven by a rack and pinion transmission to give the hole cutter head the power to enter and retract the knife. Because the rack and pinion transmission mechanism of the tapping machine has low machining accuracy, there will be a delay action when the tool advances and retreats. That is, when the tool advances and retracts, the reverse lift drive sha...
Claims
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IPC IPC(8): B23Q5/22
CPCB23Q5/22
Inventor 程文智
Owner 潍坊江钢机械有限公司