CN102398055B - Center hole drilling device - Google Patents

Abstract

The invention discloses a center hole drilling device, which comprises a center hole drilling machine, a lifting device, a material hauling vehicle and a guide rail, wherein the center hole drilling machine is fixed on the lifting device; and the material hauling vehicle can slide on the guide rail. By the center hole drilling device provided by the invention, shaft workpieces of different dimensions can be flexibly subjected to center hole drilling operation, and parts can be conveniently operated without the movement of the workpieces, so that the operation efficiency and quality are improved, and an application range is enlarged.

Description

A center hole drilling device

technical field

The present invention relates to the technical field of machining machine tools, in particular to a special machine tool for center holes.

Background technique

When processing shaft parts, it is often necessary to drill a center hole on the end face of the part. There are various drilling methods, among which the use of a special machine tool for center holes is a method with high efficiency and quality. However, the traditional special-purpose machine tool is limited by the clamping method and the size of the bed, and cannot meet the drilling center hole operation of large-sized and multi-standard parts.

Contents of the invention

The object of the present invention is to provide a center hole drilling device that can meet the needs of drilling center holes for large-sized and multi-standard parts.

The center hole drilling device provided by the present invention includes a center hole drilling machine, a lifting device, a towing vehicle, and a guide rail. The center hole drilling machine is fixed on the lifting device, and the support vehicle can be placed on the guide rail Sliding; By adjusting the height of the lifting device, the height of the drilling center machine on the lifting device can be adjusted, so that the center hole can be drilled for workpieces with different diameters on the tow truck.

Further, the center hole drilling machine includes a support, a bearing seat, a spline shaft, a movable bearing sleeve, a bearing, a bearing sleeve, a chuck, a drill chuck, and a motor, and the bearing seat is fixed on the support , the spline shaft is slidably installed in the bearing sleeves at the front and rear ends of the bearing seat, the bearing sleeve is fixed on the first and last ends of the bearing seat through bearings, and the movable bearing sleeve is fixed on the spline shaft in the bearing seat, The drill chuck is installed on the front end of the spline shaft, a large pulley is installed on the bearing sleeve at the rear end of the bearing seat, the motor is fixed on the support, and the small pulley installed on the motor shaft passes through the belt and The large belt pulley on the bearing sleeve at the rear end of the bearing seat is connected. The chuck is located at the front end of the bearing seat, its centerline coincides with the centerline of the spline shaft, protrudes and is fixedly installed on the front part of the support.

Further, a shift fork is installed in the horizontal radial direction of the middle part of the bearing seat of the center hole drilling machine, and one end of the shift fork is connected with the movable bearing sleeve in the bearing seat through the through hole in the axial direction on the wall of the bearing seat, and the other end of the shift fork is It is connected with the handle fixed on one side of the bearing seat; when drilling, the handle is pressed, and the power input by the person turns to the horizontal direction through the fork, and is transmitted to the spline shaft through the bearing and the moving bearing sleeve, thereby completing horizontal feeding ;Because the resistance during drilling is generally a process of first increasing, then decreasing and then increasing, the resistance is fed back to the person acting on the handle through the feed system, and the person can adjust the force, speed and holding time of the handle to adjust the resistance. The resistance feedback is adjusted to achieve the purpose of saving labor and saving drill bits; moreover, when the existing center hole needs to be repaired, the drilled part is far away from the end face, or the hole needs to be reamed, it is often necessary to quickly feed and move long distance. At this time, the handle can be quickly pressed to the bottom at one time, thereby driving the spline shaft to perform large feed at one time.

Further, the top of the bearing seat of the center hole drilling machine is equipped with lifting lugs; when the workpieces are stacked together and it is inconvenient to move, the center hole drilling machine can be hung by a balance crane (because there are lifting lugs), and directly clamped with a chuck The end of the workpiece (the chuck protrudes significantly from the front of the support) allows flexible and convenient drilling operations without moving the workpiece.

Further, the lifting device includes an underframe, a supporting plate, an adjusting screw, a rotary rod, a screw nut, a guide column, and a guide stud. The nut is fixed at the center of the underframe, and the four corners of the underframe are fixed There are two guide sleeves, and two through holes are left at the other diagonal position. The adjusting screw is fixed under the supporting plate through a screw nut, and the rotating rod is inserted into the hole at the tail of the adjusting screw. The two guide posts are fixed under the support plate through the guide sleeve, and the two guide studs are fixed under the support plate through through holes; the guide post and the inner hole of the guide sleeve are clearance fit, and the guide post can only follow the inner hole of the guide sleeve. The center direction moves, thus plays the function of guiding in the vertical direction, and the guide stud can limit the horizontal turning of the top plate, and plays the function of auxiliary guiding.

Further, the adjusting screw and the screw nut are connected by trapezoidal threads, which can play a self-locking role between the adjusting screw and the screw nut. the

Further, a nut is provided on the guide stud, which can function as a locking position.

Further, there are four drilling holes at the tail of the adjustment screw, and the orientation of the drilling holes is staggered. When the screw is rotated with a short rotation side, it can be flexibly inserted into different holes, and the angle can be rotated quickly to improve the adjustment. efficiency.

Further, the towing vehicle includes a vehicle frame, wheels fixed on the four legs of the vehicle frame, and V-shaped blocks connected to the vehicle frame.

There are two V-shaped blocks on the frame of the present invention, which are connected to the frame through threaded holes. There are 5 pairs or 6 pairs of threaded holes on the frame. Of course, the number of specific settings can be set according to the needs. The threaded holes in different positions can adjust the distance between the two V-shaped blocks, and according to the different diameters of the processed workpieces, V-shaped blocks of corresponding sizes can also be used instead. The V-shaped blocks play the role of positioning the workpiece and can hold up to a length of 200 - 3000mm, 50-300mm diameter workpiece.

The present invention adopts a combined design, and when all the parts are complete, it can be applied to the processing method of large batches and dedicated personnel and dedicated stations, which greatly improves the working efficiency. And when only the center hole drilling machine is used alone, the parts can be processed without moving the workpiece, which is flexible and convenient. The center hole drilling operation of the shaft parts can be performed efficiently and reliably, and the operation efficiency, quality and scope of application are improved.

Description of drawings

Fig. 1 is a schematic structural view of a center hole drilling device provided by an embodiment of the present invention.

Fig. 2 is a schematic structural view of the center hole drilling machine of the center hole drilling device provided by the embodiment of the present invention.

Fig. 3 is a cross-sectional view of the center hole drilling machine of the center hole drilling device provided by the embodiment of the present invention.

Fig. 4 is a top view of the center hole drilling machine of the center hole drilling device provided by the embodiment of the present invention.

Fig. 5 is a left view of the center hole drilling device provided by the embodiment of the present invention.

The purpose, functions and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

As shown in FIG. 1 , a center hole drilling device provided by an embodiment of the present invention includes a center hole drilling machine 1 , a lifting device 2 , a tow truck 3 and a guide rail 4 . Wherein, the drilling center hole machine 1 is fixed on the lifting device 2, and the lifting device 2 is fixed on the ground, and the wheels 32 on the four feet of the vehicle frame 31 of the tow truck 3 can slide on the guide rail 4, and the guide rail 4 is fixed on the ground, The vehicle frame 31 is connected with a V-shaped block 33, and the V-shaped block 33 is fixed on the vehicle frame 31 through threaded holes. The threaded holes on the vehicle frame 31 can be 5 pairs or 6 pairs. Of course, the specific number of settings can be set according to the needs. Position, the workpiece 10 can be positioned on the V-shaped block 33.

As shown in Fig. 2, Fig. 3 and Fig. 4, a center hole drilling device provided by an embodiment of the present invention includes a support 11, a bearing seat 12, a spline shaft 13, a movable bearing sleeve 15, a bearing 16. Bearing sleeve 19, chuck 17, drill chuck 18, motor 14. Among them, the bearing seat 12 is fixed on the bearing seat 11, the spline shaft 13 is slidably installed in the bearing sleeves 19 at the front and rear ends of the bearing seat 12, the bearing sleeve 19 is fixed on the head and tail ends of the bearing seat 12 through the bearing 16, and the movable bearing sleeve 15 is fixed On the spline shaft 13 in the bearing seat 12, the drill chuck 18 is installed on the front end of the spline shaft 13, the large pulley 113 is installed on the bearing sleeve 19 at the rear end of the bearing seat 12, and the motor 14 is fixed on the support 11. The small pulley 112 installed on the motor 14 shaft is connected to the large pulley 113 on the bearing sleeve 19 at the rear end of the bearing seat 12 through a belt 117, and the chuck 17 is located at the front end of the bearing seat 12, and its center line is in phase with the center line of the spline shaft 13. Overlapping, protruding and fixedly installed on the front portion of the support 11. A shift fork 111 is installed in the horizontal radial direction in the middle of the bearing seat 12. One end of the shift fork 111 is connected to the movable bearing sleeve 15 in the bearing seat 12 through the through hole 118 in the axial direction on the wall of the bearing seat 12, and the other end is fixed on the bearing seat. The handle 114 at the bottom of the 12 is connected. In addition, lifting lugs 115 are installed on the top of the bearing housing 12 .

As shown in Fig. 5, a kind of drilling center hole device provided by the embodiment of the present invention, its lifting device includes underframe 21, supporting plate 22, adjusting screw 24, rotating rod 29, screw nut 23, guide column 27, guide sleeve 28. The guide stud 26 and the screw nut 23 are fixed at the center of the bottom frame 21. Two guide sleeves 28 are fixed at the four corners of the bottom frame 21, and two through holes are left at the other diagonal position. The adjustment screw 24 is fixed under the supporting plate 22 through the screw nut 23, and a rotary rod 29 is inserted in the drilling hole at the tail of the adjustment screw 24, and the two guide posts 27 are fixed under the supporting plate through the guide sleeve 28, and the two guiding studs 26 pass through The hole is fixed under the supporting plate 22, and the guide stud 26 is provided with a nut 25.

The working principle of the drilling center hole device provided by the present invention is: when drilling the center hole on the end face of the workpiece, according to the length of the workpiece 10, select threaded holes at different positions on the frame 31 of the tow truck 3 to adjust the two V-shaped blocks. 33 (there are 5 pairs or 6 pairs of threaded holes on the frame 31, of course, the number of specific settings can also be set according to needs), the workpiece 10 is positioned on the V-shaped block 33, and the appropriate Insert the center drill 116 of the drill bit holder 18; rotate the rotary rod 29 on the lifting device 2, and rotate the adjusting screw 24 to adjust the height of the drilling center hole machine 1 fixed on the supporting plate 22, and the short rotary side 29 can be used to rotate The dynamic adjustment lead screw 24 can be flexibly inserted into different drilling holes at the tail of the adjustment lead screw 24, and the angle can be rotated quickly to improve the efficiency of adjustment. When the height of the center hole drilling machine is close to the workpiece 10 on the towing cart , the long rotary rod 29 can be used instead to precisely adjust the height of the center hole drilling machine, and the distance can be adjusted by sliding the support trolley 3, so that the chuck 17 is aligned with the workpiece 10 and clamped by the chuck 17, thereby realizing workpiece loading. card; open the motor 14, move the handle 114 to the direction of the workpiece 10, the power input by the person turns to the horizontal direction through the fork 111 driven by the handle 114, and transmits it to the spline shaft 13 through the bearing 16 and the moving bearing sleeve 15, thereby completing Feed horizontally to make the center drill 116 drill into the workpiece 10, move the handle 114 after holding the pressure for a period of time to make the center drill 116 withdraw from the workpiece 10, thereby completing the operation of drilling the center hole.

Of course, if the workpieces are stacked together and it is inconvenient to move, the center hole drilling machine 1 of the center hole drilling device can be used alone, and the lifting lug 115 on the center hole drilling machine 1 can be hung with a balance crane, and the center hole drilling machine 1 can be lifted To the proper position of the workpiece, use the chuck 17 to directly clamp the end of the workpiece (because the chuck 17 obviously protrudes from the front of the support 11), turn on the motor 14, and move the handle 114 toward the workpiece, so that the center drill 116 drills into the workpiece, Move the handle 114 after holding the pressure for a period of time to make the center drill 116 withdraw from the workpiece, and complete the operation of drilling the center hole. Therefore, the drilling operation can be performed flexibly and conveniently without moving the workpiece, and the work efficiency can be improved.

Compared with other special machine tools that need to clamp the workpiece on the bed, and the size of the workpiece is limited by the semi-closed space of the bed, the present invention greatly improves The size range of parts that can be processed is improved; at the same time, the invention adopts a combined design, which is applicable to the processing method of large batches and dedicated personnel and dedicated stations, which greatly improves work efficiency; and the center hole drilling machine can also be used alone. The parts can be processed without moving the workpiece, which is flexible and convenient. It can efficiently and reliably drill the center hole of the shaft parts, which improves the working efficiency, quality and scope of application.

The above-mentioned embodiment is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above-mentioned embodiment, and any other changes, modifications, substitutions, combinations, Simplifications should be equivalent replacement methods, and all are included in the protection scope of the present invention.

Claims (8)

1. a centering device, it is characterized in that: this device comprises centre bore hitting machine, lowering or hoisting gear, material drag car, guide rail, described centre bore hitting machine is fixed on described lowering or hoisting gear, described lowering or hoisting gear is fixed on the ground, described material drag car can slide on described guide rail, and described guide rail is fixed on the ground, described centre bore hitting machine comprises bearing, bearing block, splined shaft, bearing holder (housing, cover), shift fork, shifting axle bearing sleeve, bearing, chuck, drill chuck and motor, described bearing block is fixed on described bearing, described bearing holder (housing, cover) is fixed on described bearing block head and the tail two ends by described bearing, described splined shaft is slidably arranged in described bearing holder (housing, cover), described shifting axle bearing sleeve is fixed on described splined shaft, described shift fork is arranged on the horizontal radial at described bearing block middle part, described shift fork one end is connected with the described shifting axle bearing sleeve in described bearing block by the through hole on described bearing block sidewall axis direction, the other end is connected with the handle that one end is fixed on described bearing block bottom, when pressing handle, the power of input turns to as horizontal direction by fork, by shifting axle bearing sleeve, bearing in described shifting axle bearing sleeve passes to described splined shaft, realizing splined shaft level feeds, described drill chuck is arranged on described splined shaft front end, on the bearing holder (housing, cover) of described bearing block rear end, large belt wheel is installed, described motor is fixed on described bearing, the small pulley of installing on described motor arbor is connected with described large belt wheel by belt, and described chuck is positioned at that described bearing block front end, center line overlap with splined shaft center line, outstanding to be fixed on described bearing anterior.

2. centering device according to claim 1, is characterized in that: the bearing block top of described centre bore hitting machine is provided with hanger.

3. centering device according to claim 1, it is characterized in that: described lowering or hoisting gear comprises underframe, supporting plate, adjusting screw, revolves rod, screw, lead, guiding screw pole, described screw is fixed on underframe center, four jiaos of diagonal positions of underframe are fixed with two guide pin bushings, another diagonal position leaves two through holes, described adjusting screw is fixed under supporting plate by screw, in the boring of described adjusting screw afterbody, insertion is stated to some extent revolves rod, two leads are fixed under supporting plate by guide pin bushing, and two guiding screw poles are fixed under supporting plate by through hole.

4. centering device according to claim 3, is characterized in that: described adjusting screw is that trapezoidal thread is connected with screw.

5. centering device according to claim 3, is characterized in that: on described guiding screw pole, be provided with nut.

6. centering device according to claim 3, is characterized in that: described adjusting screw afterbody has four borings, and bore direction is staggered.

7. centering device according to claim 1, is characterized in that: described material drag car comprises vehicle frame, is fixed on the wheel on vehicle frame four pin and is connected to the vee-block on vehicle frame.

8. centering device according to claim 7, is characterized in that: on described vehicle frame, have 2 vee-blocks, by screwed hole, be connected on vehicle frame, the screwed hole on vehicle frame has 5 pairs or 6 pairs.

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