CN112959120B - Rapid centering device for processing cylinder center hole by utilizing handheld electric tool - Google Patents

Abstract

The application relates to the field of cylindrical part processing equipment, in particular to a quick centering device for processing a cylindrical center hole by using a handheld electric tool, which comprises a base sleeve, wherein a connecting piece for connecting the electric tool is arranged on the base sleeve, and a self-centering clamp is also arranged on the base sleeve; from centering anchor clamps including setting up the fixed ring cover at the base cover, be provided with a plurality of clamping jaws on the fixed ring cover, be provided with the tight driving piece of clamp that drives a plurality of clamping jaws along the radial shrink expansion of fixed ring cover on the base cover. This application has the effect that improves large-scale cylinder type cylinder centre bore machining efficiency.

Description

Rapid centering device for processing cylinder center hole by utilizing handheld electric tool

Technical Field

The application relates to the field of cylindrical part processing equipment, in particular to a quick centering device for processing a cylindrical center hole by utilizing a handheld electric tool.

Background

In the existing machining and installation process, a large number of large cylindrical workpieces to be machined need to drill central holes on the end faces of the workpieces, and the central holes need to be located in the centers of the cylinders to be machined.

The center positioning method of the existing cylinder is as follows: firstly, placing a cylinder on a support table through a hoisting tool, then dividing the cylinder into centers through a height gauge, and drawing a horizontal line; and rotating the cylinder by 90 degrees by using a hoisting tool, aligning by using an angle square, drawing a 90-degree vertical line in a center, taking the intersection point as the center, and knocking out the center to-be-processed point by using a sample punch.

In view of the above-mentioned related art, the inventor believes that it is necessary to turn the cylinder back and forth and scribe a line during the center hole processing, resulting in a drawback of slow processing efficiency.

Disclosure of Invention

In order to improve the centre bore machining efficiency to large cylinder, this application provides an utilize quick centring means of handheld electric tool processing cylinder centre bore.

The application provides a pair of utilize quick centring means of handheld electric tool processing cylinder centre bore adopts following technical scheme:

a quick centering device for processing a cylindrical center hole by utilizing a handheld electric tool comprises a base sleeve, wherein a connecting piece for connecting the electric tool is arranged on the base sleeve, and a self-centering clamp is also arranged on the base sleeve;

from centering anchor clamps including setting up the fixed ring cover at the base cover, be provided with a plurality of clamping jaws on the fixed ring cover, be provided with the tight driving piece of clamp that drives a plurality of clamping jaws along the radial shrink expansion of fixed ring cover on the base cover.

By adopting the technical scheme, firstly, the electric tool is clamped and fixed through the connecting piece, then the clamping driving piece drives the plurality of clamping jaws to radially contract along the fixed ring sleeve, so that the cylinder to be processed is clamped in the plurality of clamping jaws, the fixed ring sleeve and the cylinder to be processed are arranged on the same axis, and the positioning of the central hole of the cylinder is further completed; namely, the effect of improving the processing efficiency of the large cylinder is improved by reducing the positioning steps and time of the central hole.

Optionally, the clamping driving member includes a stud disposed on the base sleeve, a driving ring is sleeved on the stud, a plurality of driving connecting rods are hinged to the driving ring, the driving connecting rods are hinged to the clamping jaws in a one-to-one correspondence manner, a threaded portion is disposed on the base sleeve, and the fixed ring sleeve is screwed on the threaded portion.

Through adopting above-mentioned technical scheme, rotate the stationary ring cover and make the stationary ring cover to keeping away from the base cover direction and remove for the clamping jaw removes to keeping away from the drive ring direction with stationary ring cover pin joint, and the clamping jaw is under the limiting displacement of drive connecting rod, and the clamping jaw is kept away from stationary ring cover one end and is removed to stationary ring cover the central axis direction, thereby reaches and presss from both sides tight the cylindrical effect of waiting to process of location.

Optionally, the clamping jaw is hinged with a pressing sheet, the cross section of the pressing sheet is in an arc shape, and a plurality of anti-skidding convex strips are arranged on the pressing sheet.

Through adopting above-mentioned technical scheme, increased the preforming and wait to process the cylindrical frictional force, reduced because the preforming rocks the centering error that causes.

Optionally, the fixed ring sleeve is provided with a plurality of radial guide sleeves, each radial guide sleeve is internally provided with a positioning rod, and the driving ring is provided with a distraction driving piece for driving the positioning rod to slide along the radial guide sleeve.

Through adopting above-mentioned technical scheme, can stretch out a plurality of locating levers along radial guide pin bushing through strutting the driving piece for the locating lever butt accomplishes the butt location on the inner wall of annular cover, and then can be used for the cylinder terminal surface to set up when darker heavy groove, the clamping jaw presss from both sides and gets behind the cylinder lateral wall, and electric tool can't stretch into in the heavy groove with the condition of cylinder contact, thereby improves the suitability from centring means.

Optionally, the distraction driving part includes a guide post disposed on the driving ring, the guide post is disposed in an inclined manner along a direction away from the driving ring, and a limit groove for the guide post to slide is disposed on the positioning rod; and the stud is provided with an adjusting piece which drives the driving ring to move along the axial direction of the stud.

Through adopting above-mentioned technical scheme, can drive the drive ring through the regulating part or press the clamping jaw and remove along the double-screw bolt for the guide post follows the drive ring and removes along double-screw bolt axis direction, and the guide post slides in the spacing inslot, thereby makes the locating lever slide in radial guide pin bushing, and then reaches and stretch out and draw back a plurality of locating levers simultaneously along the radial retainer ring cover, thereby reaches treating the machined part to the ring type and carries out the centering location.

Optionally, the adjusting element includes an adjusting nut screwed onto the stud, and a pressing spring for pressing the driving ring against the adjusting nut is sleeved on the stud.

Through adopting above-mentioned technical scheme, can adjust the position of adjusting nut on the double-screw bolt to the position of adjustment driving ring on the double-screw bolt, after adjusting nut removed to keeping away from the base cover direction, the driving ring removed along with adjusting nut fast under compression spring's effect, thereby reached the effect of in time contracting the locating lever.

Optionally, a guide roller is arranged on the positioning rod.

Through adopting above-mentioned technical scheme, the setting of guide roller for when treating that the machined part moves under the effect of locating lever, treat the inner wall of machined part and the laminating of guide roller and remove, treat the inner wall of machined part with the reduction locating lever scratch.

Optionally, one end, away from the fixed ring sleeve, of each clamping jaw is hinged with a butt joint plate.

Through adopting above-mentioned technical scheme, when pressing the clamping jaw, only need with the butt of butt board on treating the subsider diapire of machined part, then press whole centring means to treating the machined part, can accomplish central location, and press the in-process, the butt board is laminated all the time on treating the machined part to reduce the whole skew of centring means and lead to the appearance of eccentric condition.

Optionally, the connecting piece includes the connecting plate of fixing on the base cover, be provided with the perforation that supplies the electric tool to pass on the connecting plate, be provided with the slide rail on the connecting plate, be provided with two splint on the slide rail, be provided with the mounting of two splint relative motion of drive on the connecting plate.

Through adopting above-mentioned technical scheme, stretch into back in the base cover with electric tool from the perforation, the mounting drives two splint relative movement for electric tool has accomplished the process with base cover centering positioning automatically under the clamping action of splint, thereby has guaranteed the machining precision.

Optionally, the fixing part comprises a bidirectional screw rod rotatably arranged on the connecting plate, the two clamping plates are in threaded connection with the bidirectional screw rod, and an adjusting hand wheel is arranged on the bidirectional screw rod.

Through adopting above-mentioned technical scheme, rotate adjusting handle, drive two-way lead screw and rotate for two splint approach fast or separate, thereby press from both sides tightly or loosen electric tool, and then improved the whole machining efficiency of cylinder.

In summary, the present application includes at least one of the following beneficial technical effects:

1. firstly, clamping and fixing an electric tool through a connecting piece, then driving a clamping driving piece to drive a plurality of clamping jaws to radially contract along a fixed ring sleeve, so that a cylinder to be processed is clamped in the clamping jaws, the fixed ring sleeve and the cylinder to be processed are arranged on the same axis, and the positioning of a central hole of the cylinder is completed, so that the effect of improving the processing efficiency of the large cylinder by reducing the positioning steps and time of the central hole is achieved;

2. the setting of locating lever for centring means can be used for the annular to treat the centering function of machined part, thereby has improved setting device's suitability.

Drawings

Fig. 1 is a schematic diagram illustrating an overall structure of a quick centering device for processing a central hole of a cylinder by using a handheld power tool according to an embodiment of the present disclosure.

Fig. 2 is a cross-sectional view of a quick centering device for machining a center hole of a cylinder using a hand-held power tool according to an embodiment of the present application.

Fig. 3 is a schematic view of a jaw linkage portion of a quick centering device for processing a center hole of a cylinder by using a hand-held power tool according to an embodiment of the present application.

Fig. 4 is a schematic diagram for showing a structure of a positioning rod portion in a quick centering device for processing a cylinder center hole by using a handheld power tool according to an embodiment of the present application.

Description of reference numerals: 1. a base sleeve; 11. a threaded portion; 2. a connecting member; 21. a connecting plate; 22. a slide rail; 23. a splint; 24. a fixing member; 241. a bidirectional screw rod; 242. adjusting a hand wheel; 3. a self-centering clamp; 31. a fixed ring sleeve; 32. a clamping jaw; 33. clamping the driving member; 331. a stud; 332. a drive ring; 333. a drive link; 34. tabletting; 341. a convex strip; 35. an adjustment member; 351. adjusting the nut; 352. a compression spring; 36. a radial guide sleeve; 37. positioning a rod; 371. a guide roller; 38. opening the driving member; 381. a guide post; 382. a limiting groove; 39. abutting against the board.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses utilize quick centring means of handheld electric tool processing cylinder centre bore. Referring to fig. 1 and 2, the fast centering device for processing a cylindrical center hole by using a handheld electric tool comprises a base sleeve 1, wherein one end of the base sleeve 1 in the axial direction is provided with a connecting piece 2 for connecting the electric tool, and the other end of the base sleeve 1 is provided with a self-centering clamp 3 for clamping a workpiece to be processed.

Referring to fig. 1, the connecting member 2 includes a connecting plate 21 fixed to the base housing 1, the connecting plate 21 is provided with a through hole for passing the electric control tool therethrough, and a central axis of the through hole and a central axis of the base housing 1 are arranged along the same straight line. A pair of symmetrically arranged slide rails 22 are fixed on the connecting plate 21 at the side of the through hole, a pair of clamping plates 23 are arranged on the slide rails 22, and the cross sections of the clamping plates 23 are in a semi-circular arc shape so as to clamp the electric tool. The connecting plate 21 is provided with a fixing member 24 for driving the two clamping plates 23 to move relatively along the slide rail 22. The fixing part 24 includes a bidirectional screw rod 241 installed on the clamping plate 23, the two clamping plates 23 are respectively screwed with a left-handed thread part and a right-handed thread part of the bidirectional screw rod 241, an adjusting hand wheel 242 is fixed at one end of the bidirectional screw rod 241 in the self axis direction, and the bidirectional screw rod 241 is driven to rotate by rotating the adjusting hand wheel 242, so that the two clamping plates 23 approach or separate quickly, and an electric tool is clamped or loosened.

Referring to fig. 1 and 2, the self-centering fixture 3 includes a fixed ring sleeve 31, a threaded portion 11 for screwing the fixed ring sleeve 31 is provided on the base sleeve 1, and the fixed ring sleeve 31 is screwed on the threaded portion 11. The fixed ring sleeve 31 is hinged with a plurality of clamping jaws 32, the clamping jaws 32 are arranged at equal intervals along the circumferential direction of the fixed ring sleeve 31, and the base sleeve 1 is provided with a clamping driving piece 33 for driving the clamping jaws 32 to shrink along the radial direction of the fixed ring sleeve 31.

Referring to fig. 2 and 3, the clamping driver 33 includes a stud 331 fixed to the base housing 1, and a central axis of the stud 331 is aligned with a central axis of the base housing 1. The stud 331 is hollow for the drill bit of the electrically controlled tool to pass through. The stud 331 is sleeved with a driving ring 332, and the driving ring 332 is connected with the stud 331 through a bearing, so that the driving ring 332 can rotate around the stud 331. The driving ring 332 is hinged with a plurality of driving connecting rods 333, and the driving connecting rods 333 are arranged corresponding to the clamping jaws 32 one by one. The jaw 32 is provided with a hinge shaft to which the end of the drive link 333 remote from the drive ring 332 is hinged. By rotating the fixed ring sleeve 31, the fixed ring sleeve 31 moves towards the direction far away from the base sleeve 1, the hinged point of the clamping jaw 32 and the fixed ring sleeve 31 moves towards the direction far away from the driving ring 332, and under the limiting action of the driving connecting rod 333, the clamping jaw 32 moves towards the central axis direction of the fixed ring sleeve 31, so that the effect of clamping the cylinder to be processed is achieved. The clamping jaw 32 is further hinged with a pressing sheet 34 at one end far away from the fixed ring sleeve 31, and the cross section of the pressing sheet 34 is arranged in an arc line, so that the contact area of the pressing sheet 34 and a cylinder to be processed is ensured, and the clamping and positioning effects are ensured. The inner concave surface of the pressing sheet 34 is fixed with a plurality of convex strips 341 to increase the friction force between the pressing sheet 34 and the cylinder to be processed and reduce the centering error caused by the shaking of the pressing sheet 34.

Referring to fig. 2 and 3, an adjusting member 35 for adjusting the position of the driving ring 332 in the axial direction of the stud 331 is further mounted on the stud 331, the adjusting member 35 includes an adjusting nut 351 screwed on the stud 331, a compression spring 352 is sleeved on the stud 331, one end of the compression spring 352 abuts against the base sleeve 1, and the other end abuts against the driving ring 332, so that the driving ring 332 is pressed against the adjusting nut 351 under the action of the compression spring 352. The position of the driving ring 332 and thus the maximum opening angle of the clamping jaws 32 can be adjusted by adjusting the position of the adjusting nut 351 on the stud 331 so as to meet the centering effect of cylinders to be machined with different diameters.

Referring to fig. 2 and 4, the fixed ring sleeve 31 is provided with a plurality of radial guide sleeves 36 at equal intervals along the circumferential direction thereof. Each radial guide sleeve 36 is provided with a positioning rod 37, and the driving ring 332 is provided with a distraction driving piece 38 for driving the positioning rod 37 to move along the radial guide sleeve 36. The opening driving member 38 includes a plurality of guiding posts 381 fixed on the driving ring 332, the guiding posts 381 and the positioning rods 37 are disposed in a one-to-one correspondence, and each guiding post 381 is disposed along the direction from the base sleeve 1 to the screw rod and inclines in the direction away from the driving ring 332. Be provided with on the locating lever 37 and supply gliding spacing groove 382 of guide post 381, the incline direction of spacing groove 382 is the same with the incline direction of guide post 381, when making guide post 381 follow drive ring 332 and move along double-screw bolt 331 length direction, guide post 381 slides in spacing groove 382, thereby make locating lever 37 slide in radial guide pin bushing 36, and then reach a plurality of locating levers 37 along the radial effect of stretching out and drawing back simultaneously of fixed ring cover 31, thereby reach the effect of treating the machined part to the ring type and carry out the centering location. The axial movement of the driving ring 332 in the stud 331 can be adjusted by the adjusting element 35, or the adjustment can be achieved by pressing the clamping jaws 32, that is, the clamping jaws 32 are rotated toward the base sleeve 1 by pressing the clamping jaws 32, while the fixed ring sleeve 31 is not moved, and the driving ring 332 is moved toward the base sleeve 1 by the driving of the driving link 333, so that the plurality of positioning rods 37 are simultaneously extended out from the radial guide sleeve 36, thereby achieving the effect of centering the annular workpiece to be machined. One end of each positioning rod 37, which extends out of the radial guide sleeve 36, is secretly provided with a guide roller 371, so that when a workpiece to be machined moves along the guide roller 371 in the positioning process, the situation that the workpiece to be machined is scratched is reduced.

Referring to fig. 2 and 4, an abutting plate 39 is hinged to one end of each clamping jaw 32, which is far away from the fixed ring sleeve 31, so that after the clamping jaw 32 extends into the annular workpiece to be machined, the abutting plate 39 abuts against the ground or a flat plate, then the clamping jaw 32 is continuously pressed, the clamping jaw 32 rotates, and the abutting plate 39 is always kept in close contact with the ground, so that the deflection of the whole device caused by the rotation of the clamping jaw 32 is reduced.

The implementation principle of the quick centering device for processing the center hole of the cylinder by utilizing the handheld electric tool is as follows: the drill bit of the power tool is first inserted through the through hole and extends out of the stud 331, and then the power tool is centered and clamped by the clamping plate 23. Then, the clamping jaws 32 are opened by rotating the fixed ring sleeve 31, then the centering device is integrally buckled on a cylindrical workpiece to be machined, and then the fixed ring sleeve 31 is rotated to contract the clamping jaws 32 so that the workpiece to be machined is clamped in the clamping jaws 32, so that the drill bit of the electric tool and the central axis of the workpiece to be machined are on the same straight line, and the effect of quick centering is achieved.

Meanwhile, the annular workpiece to be machined can be positioned by extending the positioning rod 37.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (6)

1. The utility model provides an utilize quick centring means of handheld electric tool processing cylinder centre bore which characterized in that: the self-centering fixture comprises a base sleeve (1), wherein a connecting piece (2) used for connecting an electric tool is arranged on the base sleeve (1), and a self-centering fixture (3) is further arranged on the base sleeve (1); the self-centering clamp (3) comprises a fixed ring sleeve (31) arranged on a base sleeve (1), the fixed ring sleeve (31) is hinged with a plurality of clamping jaws (32), the plurality of clamping jaws (32) are circumferentially arranged at equal intervals along the fixed ring sleeve (31), and a clamping driving piece (33) for driving the plurality of clamping jaws (32) to radially contract and expand along the fixed ring sleeve (31) is arranged on the base sleeve (1); the clamping driving piece (33) comprises a stud (331) arranged on the base sleeve (1), a driving ring (332) is sleeved on the stud (331), the driving ring (332) is connected with the stud (331) through a bearing, a plurality of driving connecting rods (333) are hinged on the driving ring (332), the driving connecting rods (333) are hinged with the clamping jaws (32) in a one-to-one correspondence manner, hinged shafts are arranged on the clamping jaws (32), and one ends, far away from the driving ring (332), of the driving connecting rods (333) are hinged with the hinged shafts; the base sleeve (1) is provided with a threaded part (11), and the fixed ring sleeve (31) is screwed on the threaded part (11); the fixed ring sleeve (31) is provided with a plurality of radial guide sleeves (36), a positioning rod (37) is arranged in each radial guide sleeve (36), and the driving ring (332) is provided with a spreading driving piece (38) for driving the positioning rod (37) to slide along the radial guide sleeves (36); the opening driving piece (38) comprises a guide post (381) arranged on the driving ring (332), the guide post (381) is obliquely arranged along the direction far away from the driving ring (332), and a limiting groove (382) for the guide post (381) to slide is arranged on the positioning rod (37); the adjusting device is characterized in that an adjusting piece (35) for adjusting the driving ring (332) to move along the axial direction of the stud (331) is arranged on the stud (331), the adjusting piece (35) comprises an adjusting nut (351) screwed on the stud (331), and a compression spring (352) enabling the driving ring (332) to be compressed on the adjusting nut (351) is sleeved on the stud (331).

2. The apparatus of claim 1, wherein the fast centering device comprises: the clamping jaw (32) is hinged with a pressing sheet (34), the cross section of the pressing sheet (34) is arranged in an arc shape, and a plurality of anti-skid convex strips (341) are arranged on the pressing sheet (34).

3. The apparatus of claim 1, wherein the fast centering device comprises: and a guide roller (371) is arranged on the positioning rod (37).

4. The apparatus of claim 1, wherein the fast centering device comprises: one end, far away from the fixed ring sleeve (31), of each clamping jaw (32) is hinged with an abutting plate (39).

5. The apparatus of claim 1, wherein the fast centering device comprises: connecting piece (2) are including fixing connecting plate (21) on base cover (1), be provided with the perforation that the power tool passed on connecting plate (21), be provided with slide rail (22) on connecting plate (21), be provided with two splint (23) on slide rail (22), be provided with mounting (24) of two splint (23) relative motion of drive on connecting plate (21).

6. The apparatus of claim 5, wherein the fast centering device comprises: the fixing piece (24) comprises a bidirectional screw rod (241) rotatably arranged on the connecting plate (21), the clamping plates (23) are in threaded connection with the bidirectional screw rod (241), and an adjusting hand wheel (242) is arranged on the bidirectional screw rod (241).

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