CN115846694A - Double-end lathe - Google Patents

Abstract

A double-end lathe belongs to the technical field of lathes. The method is characterized in that: headstock (2) have slidable to install two at bed body (1) both ends, each headstock (2) all are connected with thrust unit, knife rest (6) also have two of installing on bed body (1), knife rest (6) set up between two headstock (2), knife rest (6) are connected with feed arrangement and translation device, feed arrangement's direction of feed is perpendicular with thrust unit's promotion direction, translation device's translation direction is parallel with thrust unit's promotion direction. This double-end lathe's headstock and knife rest all are provided with two, and two headstocks all are connected with thrust unit, and two thrust unit drive two headstock motions respectively, can make the electric chuck on two headstocks cooperate, have realized the rising tight to the cylinder body both ends, and each knife rest all is connected with feed arrangement and translation device, makes two knife rests can follow the both ends of cylinder body respectively and carries out the turning to the excircle of cylinder body, has improved the turning speed of cylinder body excircle greatly.

Description

Double-end lathe

Technical Field

A double-end lathe belongs to the technical field of lathes.

Background

The common lathe is a horizontal lathe which can process various procedures for various workpieces such as shafts, discs, rings and the like, is usually used for processing the inner and outer rotating surfaces, end surfaces and various inner and outer threads of the workpieces, adopts corresponding cutters and accessories, and can also be used for drilling, reaming, tapping, knurling and the like.

The cylinder body of the single hydraulic prop needs to be turned through a lathe to the excircle, and when the excircle is turned through the existing lathe, the cylinder body is generally tensioned through the inner wall of the cylinder body through a three-jaw chuck so as to avoid the interference on the processing of the outer wall of the cylinder body. The existing lathe has the following technical problems when the excircle of the cylinder body is turned: 1) Because the length of the cylinder body is long, the whole excircle needs to be turned uniformly when the excircle of the cylinder body is turned, and the turning speed of the excircle of the cylinder body is slow; 2) The material loading of cylinder body is gone on through the manipulator usually, when through manipulator material loading, because cylinder body length is longer, the manipulator need press from both sides tightly the cylinder body through the middle part of cylinder body, when the tip cover of cylinder body outside the tight portion that rises of three-jaw chuck, hardly adjust cylinder body and three-jaw chuck well, need artifical supplementary cylinder body to fix a position, the location that just can accomplish the cylinder body is pressed from both sides tightly, this material loading speed that leads to the cylinder body is slow, and then the turning speed that leads to the cylinder body excircle is slow.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: overcome prior art's not enough, provide one kind and can follow the both ends of cylinder body and carry out the turning to the cylinder body excircle simultaneously, the fast double-end lathe of cylinder body excircle turning speed.

The technical scheme adopted by the invention for solving the technical problems is as follows: this double-end lathe, its characterized in that: including the bed body, headstock and knife rest, the headstock has two of slidable installation at bed body both ends, two headstocks are just to setting up, each headstock all is connected with thrust unit, make two headstocks be close to each other or keep away from each other, the knife rest also has two of installing on the bed body, the knife rest sets up between two headstocks, the knife rest is connected with feeding device and translation device, feeding device's direction of feed is perpendicular with thrust unit's promotion direction, translation device's translation direction is parallel with thrust unit's promotion direction.

Preferably, the translation device is mounted on the spindle box on the corresponding side. The translation device is installed on the headstock that corresponds the side, makes the headstock simultaneous movement that the knife rest can follow the side that corresponds, treats that the electric chuck on the headstock presss from both sides tight back to the cylinder body, and the knife rest can begin to carry out the turning to the cylinder body excircle, need not readjust the position of knife rest.

Preferably, the top of the bed body is provided with a push guide rail, and the spindle box and the feeding device are slidably mounted on the push guide rail. The main spindle box and the feeding device share a pushing guide rail, so that the tool rest is guaranteed to move linearly along the axial direction of the cylinder body, and the sizes of the two ends of the cylinder body after turning are guaranteed to be consistent.

Preferably, the translation device comprises a translation motor and a translation lead screw, the translation lead screw is in threaded connection with the feeding device, and the translation motor is connected with the translation lead screw. The translation motor translates through the translation lead screw feeding device, so that the translation distance of the feeding device can be conveniently and accurately controlled.

Preferably, the feeding device comprises a feeding motor and a feeding screw rod, the feeding screw rod is in threaded connection with the tool rest, and the feeding motor is connected with the feeding screw rod. The feed motor drives the tool rest to move through the feed screw, so that the feed amount of the tool rest is conveniently and accurately controlled, and the turning amount of the excircle of the cylinder body is conveniently controlled.

Preferably, the pushing device comprises a pushing motor and a pushing screw rod, the pushing screw rod is rotatably mounted on the bed body, the bottom of the spindle box is in threaded connection with the pushing screw rod on the corresponding side, and an output shaft of the pushing motor is connected with the pushing screw rod. The pushing motor drives the corresponding spindle box to move by pushing the lead screw, so that the cylinder body is conveniently clamped and loosened.

Preferably, the device further comprises a positioning device, the upper part of the positioning device is provided with a middle alignment part, and the center line of the middle alignment part is superposed with the center line of the spindle box. The middle part of the positioning device can center the cylinder body, so that the cylinder body is opposite to the electric chucks on the spindle boxes, and the spindle boxes can automatically clamp the cylinder body.

Preferably, the positioning device comprises a positioning cylinder, two positioning plates and two positioning blocks, the two positioning plates are symmetrically arranged on two sides of the bed body, the positioning blocks are mounted at the tops of the positioning plates, arc-shaped positioning portions with concave middle portions are arranged on the inner sides of the positioning blocks, the two positioning portions surround the middle portion, and a piston rod of the positioning cylinder is connected with the two positioning plates simultaneously. The positioning cylinder pushes the two positioning plates to synchronously move inwards, and the centering of the cylinder body is realized by the positioning parts on the two positioning blocks, so that the cylinder body is ensured to be coaxial with the electric chucks on the spindle boxes.

Preferably, still include jacking device, the inboard of each headstock all is provided with jacking device, and jacking device is along with the headstock synchronous motion of corresponding side. The jacking device can jack the cylinder body, pre-positions the cylinder body, and facilitates positioning of the positioning device on the cylinder body.

Preferably, the jacking device include jacking cylinder, jacking frame and jacking roller, the rotatable installation in the middle part of jacking frame of jacking roller, the piston rod and the jacking frame of jacking cylinder are connected. The jacking cylinder drives the jacking roller to lift through the jacking frame, and jacks the cylinder body through the jacking roller, after the cylinder body is jacked, the pushing device pushes the spindle box to move so as to clamp the cylinder body, and the jacking roller can rotate passively at the moment, so that friction between the jacking cylinder and the outer wall of the cylinder body is avoided.

Compared with the prior art, the invention has the beneficial effects that:

this double-end lathe's headstock and knife rest all are provided with two, and two headstocks all are connected with thrust unit, and two thrust unit drive two headstock motions respectively, can make the electric chuck on two headstocks cooperate, have realized the rising tight to the cylinder body both ends, and each knife rest all is connected with feed arrangement and translation device, makes two knife rests can follow the both ends of cylinder body respectively and carries out the turning to the excircle of cylinder body, has improved the turning speed of cylinder body excircle greatly.

Drawings

Fig. 1 is a schematic front view of a double-head lathe with a translation device removed.

Fig. 2 is a partially enlarged view of a point a in fig. 1.

Fig. 3 is a front view schematically showing the installation of the pushing device, the translating device and the feeding device at one end of the double-head lathe.

Fig. 4 is a partially enlarged view of fig. 3 at B.

Fig. 5 is a perspective view of the jacking device.

Fig. 6 is a perspective view of the positioning device.

In the figure: 1. the device comprises a bed body 2, a spindle box 3, an electric chuck 4, a push motor 5, a push guide rail 6, a tool rest 7, a jacking device 8, a positioning device 9, a cylinder body 10, a feeding seat 11, a feeding guide rail 12, a translation seat 13, a feeding screw 14, a translation motor 15, a translation screw 16, a mounting frame 1601, a mounting frame mounting part 1602, a guide plate 17, a jacking frame 1701, a jacking part 18, a jacking roller 19, a jacking cylinder 20, a guide rod 21, a limit nut 22, a positioning seat 2201, a positioning seat mounting part 23, a positioning cylinder 24, a positioning plate 25, a positioning block 2501 and a positioning part.

Detailed Description

The present invention is further described with reference to the following detailed description, however, it should be understood by those skilled in the art that the detailed description given herein with respect to the accompanying drawings is for better explanation and that the present invention is not necessarily limited to the specific embodiments, but rather, for equivalent alternatives or common approaches, may be omitted from the detailed description, while still remaining within the scope of the present application.

FIGS. 1 to 6 show preferred embodiments of the present invention, and the present invention will be further described with reference to FIGS. 1 to 6.

The utility model provides a double-end lathe, including the bed body 1, headstock 2 and knife rest 6, headstock 2 has two that slidable installs at 1 both ends of the bed body, two headstock 2 are just to setting up, each headstock 2 all is connected with thrust unit, make two headstock 2 be close to each other or keep away from each other, knife rest 6 also has two of installing on the bed body 1, knife rest 6 sets up between two headstock 2, knife rest 6 is connected with feeding device and translation device, feeding device's direction of feed is perpendicular with thrust unit's direction of push, translation device's translation direction is parallel with thrust unit's direction of push. This double-end lathe's headstock 2 and knife rest 6 all are provided with two, and two headstocks 2 all are connected with thrust unit, and two thrust unit drive two headstocks 2 movements respectively, can make the electronic chuck 3 on two headstocks 2 cooperate, have realized the rising to the cylinder body 9 both ends, and each knife rest 6 all is connected with feed arrangement and translation device, makes two knife rests 6 can follow the both ends of cylinder body 9 respectively and carries out the turning to the excircle of cylinder body 9, has improved the turning speed of cylinder body 9 excircle greatly.

Specifically, the method comprises the following steps: as shown in fig. 1: the promotion guide rail 5 is installed at the top of the bed body 1, promotion guide rail 5 level sets up, promotion guide rail 5 has two that just the interval set up side by side, headstock 2 sets up respectively at the both ends of the bed body 1, each headstock 2 all is located the upside of the bed body 1, each headstock 2 all slidable installs on the bed body 1, 2 one-to-one of thrust unit headstock, each thrust unit all installs on the bed body 1, each thrust unit all is connected with the headstock 2 that corresponds the side, and promote the headstock 2 that corresponds the side and move along promotion guide rail 5.

And a spindle motor is arranged on each spindle box 2 and is connected with a spindle of the spindle box 2, an electric chuck 3 is arranged on the spindle, and the electric chuck 3 synchronously rotates along with the spindle of the spindle box 2. The electric chucks 3 of the two spindle boxes 2 are coaxially arranged, the cylinder 9 to be turned is positioned between the two electric chucks 3, and the clamping of the cylinder 9 is realized through the electric chucks 3. The jaws of the electric chuck 3 extend into the cylinder 9 and clamp the cylinder 9 through the inner wall of the cylinder 9.

The tool rests 6 are positioned between the spindle boxes 2 on the two sides, the tool rests 6 are slidably mounted on the push guide rails 5, each tool rest 6 is connected with a feeding device and a translation device, the translation devices are mounted at the bottoms of the spindle boxes 2 on the corresponding sides, the feeding devices are mounted on the translation devices, and the feeding devices are connected with the tool rests 6 on the corresponding sides. The feeding direction of the feeding device is perpendicular to the pushing direction of the pushing device, the translation direction of the translation device is parallel to the pushing direction of the pushing device, namely the feeding device drives the tool rest 6 to move along the direction close to or far away from the axis of the electric chuck 3, and the translation device drives the tool rest 6 to move along the pushing guide rail 5.

The double-head lathe further comprises a positioning device 8 and a jacking device 7, wherein the positioning device 8 is installed on the upper side of the lathe body 1, and the positioning device 8 is located between the two spindle boxes 2. And a jacking device 7 is arranged between each spindle box 2 and the positioning device 8, and the jacking device 7 is arranged on the inner side of the spindle box 2 on the corresponding side and is fixedly connected with the spindle box 2 on the corresponding side.

As shown in FIGS. 2 to 4: thrust unit includes push motor 4 and promotes the lead screw, and the rotatable installation of promotion lead screw is on the bed body 1, and the promotion lead screw level sets up between two promotion guide rails 5, the bottom of headstock 2 and the promotion lead screw threaded connection who corresponds the side, and push motor 4 installs on the bed body 1, and push motor 4's output shaft is connected with the promotion lead screw to drive the promotion lead screw and rotate, and then drive headstock 2 that corresponds the side through promoting the lead screw and move along promotion guide rail 5.

The translation device includes translation motor 14, translation lead screw 15 and translation seat 12, translation seat 12 sets up the inboard at the headstock 2 that corresponds the side, translation seat 12 is located the upside of bed body 1, translation seat 12 slidable installs on promoting guide rail 5, translation lead screw 15 is rotatable installs the bottom at the headstock 2 that corresponds the side, translation lead screw 15 is located the downside of translation seat 12, translation lead screw 15 and the bottom threaded connection of translation seat 12, translation motor 14 installs the bottom at the headstock 2 that corresponds the side, translation motor 14's output shaft and translation lead screw 15 are connected, and drive its rotation, thereby can enough make translation seat 12 along with the headstock 2 synchronous motion that corresponds the side, can make translation seat 12 independent movement again, thereby with the relative motion of tight cylinder body 9 of clamp, in order to carry out the turning to the excircle of cylinder body 9.

The feeding device comprises a feeding motor and a feeding screw 13, the feeding guide rail 11 is installed on the upper side of the translation seat 12, the feeding guide rail 11 is perpendicular to the pushing guide rail 5, the feeding guide rail 11 is symmetrically arranged on two sides of the translation seat 12, the tool rest 6 is arranged on the upper side of the feeding guide rail 11, the tool rest 6 can be slidably installed on the feeding guide rail 11, the feeding screw 13 can be rotatably installed at the top of the translation seat 12, the feeding screw 13 is located between the two feeding guide rails 11, the feeding screw 13 is in threaded connection with the bottom of the tool rest 6, the feeding motor is installed on the translation seat 12, the feeding motor is connected with the feeding screw 13 and drives the feeding screw 13 to rotate, and feeding of the tool rest 6 is further realized.

The feeding device further comprises a feeding seat 10, the feeding seat 10 is slidably mounted on a feeding guide rail 11, the feeding seat 10 is in threaded connection with a feeding lead screw 13, and the tool rest 6 is detachably mounted on the upper side of the feeding seat 10.

As shown in fig. 5: the jacking device 7 comprises a jacking power device, a guide device and a jacking roller 18, the jacking power device is connected with the guide device, the jacking roller 18 is rotatably arranged at the top of the guide device, and the axial direction of the jacking roller 18 is perpendicular to the axis of the electric chuck 3.

The outer wall that encircles jacking roller 18 is provided with by outer to interior curved constant head tank that narrows down gradually, because the setting of constant head tank, when jacking cylinder body 9, can avoid cylinder body 9 to drop by jacking roller 18, can guarantee again to carry out preliminary centering location to cylinder body 9.

The jacking device 7 is installed on the spindle box 2 on the corresponding side through the installation frame 16, the installation frame installation portions 1601 which are convex are arranged on two sides of the bottom of the installation frame 16, and through holes used for being connected with the spindle box 2 are formed in the installation frame installation portions 1601.

The guider includes deflector 1602 and jacking frame 17, and deflector 1602 vertical setting, deflector 1602 are provided with two side by side and the interval, and the lower part slidable of jacking frame 17 stretches into between two deflector 1602, and the rotatable top of installing at jacking frame 17 of jacking roller 18. Two deflectors 1602 can lead jacking frame 17, guarantee that jacking frame 17 straight line goes up and down.

The guiding device further comprises a guide rod 20, the outer side of each guide plate 1602 is provided with a vertical guide rod 20, each mounting frame mounting portion 1601 is provided with a mounting block, the bottom of the guide rod 20 is in threaded connection with the mounting block corresponding to the side, the top of the guide rod 20 can slide to pass through the jacking frame 17 and then is in threaded connection with a limiting nut 21, a check nut is arranged on the lower portion of the guide rod 20 and compresses the mounting block, and therefore the guide rod 20 is prevented from loosening.

The limit nut 21 can limit the stroke top dead center of the jacking frame 17, so as to ensure that the cylinder body 9 and the electric chuck 3 are positioned at the same height when the jacking frame 17 moves to the stroke top dead center. The top dead center of the stroke of the jacking frame 17 can be adjusted by adjusting the height of the limiting nut 21 so as to adapt to the feeding of the cylinder bodies 9 with different diameters.

The jacking power device is a jacking cylinder 19 arranged on the mounting frame 16, one side of the jacking frame 17 protrudes outwards to form a jacking portion 1701, a piston rod of the jacking cylinder 19 is connected with the jacking portion 1701, and the jacking frame 17 is driven to lift through the jacking portion 1701. The jacking air cylinder 19 can be replaced by an electric cylinder, when the electric cylinder is adopted, the limit nut 21 needs to be removed, and the top dead center of the stroke of the jacking frame 17 is controlled only by the electric cylinder.

As shown in fig. 6: the positioning device 8 comprises a positioning power device and two positioning blocks 25, the two positioning blocks 25 are symmetrically arranged on two sides of the electric chuck 3, the inner side of each positioning block 25 is provided with an arc-shaped positioning part 2501 with a concave middle part, and the positioning parts 2501 of the two positioning blocks 25 surround to form a middle part coaxial with the electric chuck 3. The positioning power device is simultaneously connected with the two positioning blocks 25, and the two positioning blocks 25 synchronously move in opposite directions, so that the centering and positioning of the cylinder body 9 are realized through the two positioning blocks 25, and the alignment of the cylinder body 9 and the electric chuck 3 is ensured.

The positioning device 8 is installed on the bed body 1 through the positioning seat 22, the two sides of the bottom of the positioning seat 22 are both provided with positioning seat installation parts 2201 which are convex outwards, and each positioning seat installation part 2201 is provided with a through hole used for being connected with the bed body 1.

The positioning device 8 further comprises a positioning plate 24, the positioning power device is installed at the top of the positioning seat 22, the positioning blocks 25 are arranged on the upper side of the positioning power device, each positioning block 25 is connected with the positioning power device through the positioning plate 24, in this embodiment, the positioning power device is a positioning cylinder 23, each positioning block 25 is integrally connected with the inner side of the top of the positioning plate 24, and the bottom of each positioning plate 24 is connected with a piston rod of the positioning cylinder 23.

Due to the arrangement of the positioning plate 24, the positioning block 25 and the positioning cylinder 23 can be arranged at intervals, and mutual interference between the positioning cylinder 23 and the cylinder body 9 to be loaded is avoided. The positioning power device may also be an electric cylinder.

The working process of the double-head lathe is as follows: the cylinder body 9 is hoisted to the upper sides of the two jacking rollers 18 by the manipulator, and two ends of the cylinder body 9 are respectively loaded on the two jacking rollers 18.

The jacking cylinder 19 extends out and pushes the jacking frame 17 to ascend, and the jacking frame 17 jacks the cylinder body 9 so as to ensure that the cylinder body 9 and the electric chuck 3 are positioned at the same height.

The positioning cylinder 23 acts and drives the two positioning blocks 25 to move synchronously inwards through the positioning plate 24, so that the positioning parts 2501 of the two positioning blocks 25 clamp the cylinder body 9, and the positioning of the cylinder body 9 is realized. The pushing devices at the two ends push the spindle box 2 at the corresponding side to move inwards, so that the tensioning part of the electric chuck 3 extends into one end corresponding to the cylinder body 9 respectively, automatic feeding and clamping of the cylinder body 9 are realized, the jacking roller 18 moves synchronously along with the spindle box 2, the jacking roller 18 can rotate around the axis of the jacking roller 18, and friction between the jacking roller and the cylinder body 9 can be avoided.

Can also drive two headstock 2 simultaneous movement through two thrust unit to adjust the relative position of cylinder body 9 and positioner 8, in order to guarantee going on the excircle of whole cylinder body 9, avoid cylinder body 9 to receive the unable turning of the part that positioner 8 blockked.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims (8)

1. A double-end lathe is characterized in that: including the bed body (1), headstock (2) and knife rest (6), headstock (2) have slidable to install two at bed body (1) both ends, two headstock (2) are just to setting up, each headstock (2) all are connected with thrust unit, make two headstock (2) be close to each other or keep away from each other, knife rest (6) also have two of installing on bed body (1), knife rest (6) set up between two headstock (2), knife rest (6) are connected with feeding device and translation device, feeding device's direction of feed is perpendicular with thrust unit's direction of push, translation device's translation direction is parallel with thrust unit's direction of push.

2. The double-headed lathe according to claim 1, wherein: the translation device is arranged on the spindle box (2) on the corresponding side.

3. The double-headed lathe according to claim 1, wherein: the top of the bed body (1) is provided with a pushing guide rail (5), and the spindle box (2) and the feeding device are slidably arranged on the pushing guide rail (5).

4. The double-headed lathe according to claim 1 or 2, wherein: the translation device comprises a translation motor (14) and a translation lead screw (15), the translation lead screw (15) is in threaded connection with the feeding device, and the translation motor (14) is connected with the translation lead screw (15).

5. The double-headed lathe as set forth in claim 1 wherein: the feeding device comprises a feeding motor and a feeding screw rod (13), the feeding screw rod (13) is in threaded connection with the tool rest (6), and the feeding motor is connected with the feeding screw rod (13).

6. The double-headed lathe as set forth in claim 1 wherein: the pushing device comprises a pushing motor (4) and a pushing lead screw, the pushing lead screw is rotatably arranged on the bed body (1), the bottom of the spindle box (2) is in threaded connection with the pushing lead screw on the corresponding side, and an output shaft of the pushing motor (4) is connected with the pushing lead screw.

7. The double-headed lathe as set forth in claim 1 wherein: the spindle box is characterized by further comprising a positioning device (8), wherein the upper portion of the positioning device (8) is provided with a middle alignment portion, and the center line of the middle alignment portion is overlapped with the center line of the spindle box (2).

8. The double-headed lathe according to claim 7, wherein: the positioning device (8) comprises positioning cylinders (23), positioning plates (24) and positioning blocks (25), the positioning plates (24) are symmetrically arranged at two sides of the bed body (1), the positioning blocks (25) are mounted at the tops of the positioning plates (24), arc-shaped positioning portions (2501) with concave middle portions are arranged on the inner sides of the positioning blocks (25), the two positioning portions (2501) are encircled to form the middle portion, and piston rods of the positioning cylinders (23) are connected with the two positioning plates (24) simultaneously.

Images