CN2609694Y - Centre hole drilling machine - Google Patents

Abstract

The utility model discloses a center hole driller comprises a motor [12], a chuck [4] and a spring cutting sleeve [3], wherein the motor [12] is fixed on one end of a gear case [21], which is characterized in that one end of a supporting body [6] is connected with the chuck [4], the external circular surface of the supporting body [6] is engaged with a feeding groove [8], and the supporting body [6] is positioned near the side of the motor [12] through cooperation of a steel ball [19] and screws [10]. Screw-thread inside the feeding groove [8] is engaged with external screw thread on a slide block on a guide bushing body [16], and the slide block on the guide bushing body [16] is sliding engaged with a chute on the supporting body [6]. A drive shaft [20] of the gear case [21] is connected and fixed on a drive sleeve [11] inside the guide bushing body [16] through a pin [18], the drive sleeve [11] is connected with an inner drive groove [9] through pins, the inner drive groove [9] is connected with a drive shaft [5] supported by a bearing group [15] through pins, and a withdrawal sleeve [7] for assembling and disassembling the spring cutting sleeve [3] is arranged inside the front end of the drive shaft [5]. The center hole driller of the utility model is particularly applicable for large-scale bulky objects which is inconvenient for processing center holes on common equipments, with advantages of convenient operation, portability and high efficiency.

Description

A kind of centre bore rig

Technical field the utility model belongs to machining equipment, particularly a kind of centre bore rig.

Background technology in machined, for the processing of axial workpiece, generally need process centre bore earlier at present, carries out next process processing then.But than relatively large, heavy or the processing of the centre bore of bigger axial workpiece in batches, need heavy duty machine tools, specific drilling tool for some, corresponding handling, clamping means also will be arranged, for many kinds, small lot process unit, be a problem that can not be ignored.Never have good solution up till now, in order to overcome this problem, designer of the present utility model has carried out deep research, has proposed goal of the invention of the present utility model.Goal of the invention of the present utility model provides a kind of centre bore rig

This centre bore rig of summary of the invention, it has motor [12], chuck [4], spring cutting ferrule [3], motor [12] is fixed on an end of transmission case [21], an end that it is characterized in that supporter [6] connects chuck [4], its outer round surface cooperates with feeding cover [8], in its close motor [12] one sides, cooperate the location by steel ball [19] and screw [10], external screw thread on the slide block on the inner screw thread of feeding cover [8] and the body [16] that leads cooperates, chute on slide block on the fairlead [16] and the supporter [6] is slidingly matched, the driving shaft [20] of transmission case [21] is fastened on the interior drive sleeve [11] of guiding body [16] by pin [18], drive sleeve [9] in this drive sleeve [11] connects by pin, interior drive sleeve [9] connects by pin and has the power transmission shaft [5] that bearing group [15] supports, and what the front end inside of power transmission shaft [5] had loading and unloading spring cutting ferrules [3] unloads cover [7].These centre drill facility have simple in structure, easy to operate practicality, light, characteristics of high efficiency.Be particularly suitable for carrying out on large-scale, heavy, as to be not easy to machining center hole on common metal cutting apparatus (as lathe, the milling machine etc.) object centre bore processing.

Appended drawings is a structure cutaway view of the present utility model, and the meaning of sequence number in the accompanying drawings is: 1, claw, 2, center bit, 3, the spring cutting ferrule, 4, chuck, 5, power transmission shaft, 6, supporter, 7, unload cover, 8, feeding cover, 9, interior drive sleeve, 10, screw, 11, drive sleeve, 12, motor, 13, power switch, 14, screw, 15, bearing group, 16, guiding body, 17, handle, 18, pin, 19, steel ball, 20, driving shaft, 21, transmission case.

The specific embodiment is with reference to accompanying drawing, this centre bore rig, it has motor [12], chuck [4], spring cutting ferrule [3], motor [12] is fixed on an end of transmission case [21], an end that it is characterized in that supporter [6] connects chuck [4], its outer round surface cooperates with feeding cover [8], in its close motor [12] one sides, cooperate the location by steel ball [19] and screw [10], external screw thread on the slide block on the inner screw thread of feeding cover [8] and the body [16] that leads cooperates, chute on slide block on the fairlead [16] and the supporter [6] is slidingly matched, and screw [14] (in the accompanying drawing with center line reduced representation) is fixedlyed connected chuck [4] with supporter [6], and the center of chuck [4] is a through hole.External screw thread on the slide block on the inner screw thread of feeding cover [8] and the body [16] that leads cooperates, and the chute on slide block on the fairlead [16] and the supporter [6] is slidingly matched.The driving shaft [20] of transmission case [21] is fastened on the interior drive sleeve [11] of guiding body [16] by pin [18], drive sleeve [9] in this drive sleeve [11] connects by pin, interior drive sleeve [9] connects the power transmission shaft [5] with bearing group [15] support by pin.Interior drive sleeve [9] can be slided in drive sleeve [11], during work, driving shaft [2] drives drive sleeve [11] by pin and rotates, drive sleeve [9] was rotated in drive sleeve [11] drove by pin again, interior drive sleeve [9] drives power transmission shaft [5] by pin once more and rotates, and the interior start(ing) drill [2] of spring cutting ferrule [3] that is contained in power transmission shaft [5] front end just rotates thereupon together.Form the rotation of drilling processing.And axial feeding is to make feeding cover [8] rotation by turning handle [17], external screw thread on the slide block on internal thread in it and the fairlead [16] cooperates, drive guiding body [16] and do axial moving, form the axial feed motion, finally finish the processing of centre bore.What have loading and unloading spring cutting ferrules [3] in the front end inside of power transmission shaft [5] unloads cover [7], when needs replacing start(ing) drill.Can make guiding body [16] reach the outside of chuck [4] by turning handle [17] always, through hole up to the back, position that cover [7] occurs unloading, use wedge, promptly can will unload cover [7] according to conventional method endures out, just spring cutting ferrule [3] is together taken out of simultaneously, behind the drill, will unload cover and Spring Card cover and reinstall in the replacing, the back turning handle gets final product.

The use summary is: turning handle, make center bit and power transmission shaft retreat in the chuck endoporus, the claw [1] of chuck is clamped work piece, turn on the power switch [13], the turning handle feeding, the drilling centre bore, to meeting specification requirement, have a power failure, turning handle is return power transmission shaft, unclamp claw, finish the processing of a centre bore.If load onto chuck, can carry out centre bore processing to non-circular workpiece.

Claims (1)

1, a kind of centre bore rig, it has motor [12], chuck [4], spring cutting ferrule [3], motor [12] is fixed on an end of transmission case [21], an end that it is characterized in that supporter [6] connects chuck [4], its outer round surface cooperates with feeding cover [8], in its close motor [12] one sides, cooperate the location by steel ball [19] and screw [10], external screw thread on the slide block on the inner screw thread of feeding cover [8] and the body [16] that leads cooperates, chute on slide block on the fairlead [16] and the supporter [6] is slidingly matched, the driving shaft [20] of transmission case [21] is fastened on the interior drive sleeve [11] of guiding body [16] by pin [18], drive sleeve [9] in this drive sleeve [11] connects by pin, interior drive sleeve [9] connects by pin and has the power transmission shaft [5] that bearing group [15] supports, and what the front end inside of power transmission shaft [5] had loading and unloading spring cutting ferrules [3] unloads cover [7].

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