CN210938068U

CN210938068U - Machine tool for machining outer arc surface of large-size workpiece

Info

Publication number: CN210938068U
Application number: CN201921265353.9U
Authority: CN
Inventors: 林绿高
Original assignee: Zhejiang Chr Intelligent Equipment Co ltd
Current assignee: Zhejiang Chr Intelligent Equipment Co ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-07-07
Anticipated expiration: 2029-08-05

Abstract

The utility model relates to a lathe that is used for carrying out processing to the outer arc surface of jumbo size work piece, include: the supporting seat assembly comprises a first supporting seat and a second supporting seat which are arranged at intervals, a driving rotating shaft is erected between the first supporting seat and the second supporting seat, and the driving rotating shaft is connected with a connecting seat which is used for assembling a workpiece to be processed and can rotate along with the driving rotating shaft; the turning propulsion device is positioned below the driving rotating shaft and comprises a sliding seat capable of moving between the first supporting seat and the second supporting seat in a reciprocating mode, a turning tool assembly assembled on the sliding seat to machine the outer wall surface of the workpiece to be machined and a first driving mechanism in driving connection with the sliding seat; the moving direction of the sliding seat is consistent with the axial direction of the driving rotating shaft, and the axial lead of the outer arc surface of the machined workpiece is coincident with the axial lead of the driving rotating shaft. The machine tool can efficiently and accurately process the outer arc surface of a large-size workpiece.

Description

Machine tool for machining outer arc surface of large-size workpiece

Technical Field

The utility model relates to a machine tool machining technical field especially relates to a lathe that is used for carrying out processing to the outer arc surface of jumbo size work piece.

Background

Chinese patent application No. CN201811633893.8 (publication No. CN109434188A) discloses a workbench for a broaching machine tool, which mainly comprises a fixed base and an arc-shaped sliding seat, wherein the fixed base is provided with an arc-shaped sliding groove, and the arc-shaped sliding seat is installed in the arc-shaped sliding groove. The inner wall of the arc-shaped sliding groove is correspondingly provided with a first arc-shaped guide rail, and the arc-shaped sliding seat is connected on the first arc-shaped guide rail in a sliding mode and can be locked with the fixed base along the sliding process of the first arc-shaped guide rail to stay at any inclination angle.

A workstation for broaching machine tool in the above-mentioned patent, its fixed baseplate and arc slide are main basic unit, wherein, the fixed baseplate has the arc spout (is C shape), correspondingly, the arc slide has with the excircle profile of above-mentioned arc spout looks adaptation (is C shape equally) and supplies both sliding fit's outer arc groove, because the structure of arc slide is special, its volume and quality are also great and the required precision is higher, the processing degree of difficulty that forms outer arc surface and process on this outer arc surface and form outer arc groove increases on the excircle profile of arc slide, the prior art has not been used for carrying out high efficiency, the special machine tool of accurate processing to the outer arc surface of above-mentioned arc slide yet.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide a lathe that is used for carrying out processing to the outer arc surface of jumbo size work piece, this lathe can carry out high efficiency, accurate processing to the outer arc surface of jumbo size work piece.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a machine tool for machining an outer arc surface of a large-sized workpiece, comprising: the supporting seat assembly comprises a first supporting seat and a second supporting seat which are arranged at intervals, a driving rotating shaft is erected between the first supporting seat and the second supporting seat, and the driving rotating shaft is connected with a connecting seat which is used for assembling a workpiece to be processed and can rotate along with the driving rotating shaft; the turning propulsion device is positioned below the driving rotating shaft and comprises a sliding seat capable of moving between the first supporting seat and the second supporting seat in a reciprocating mode, a turning tool assembly assembled on the sliding seat to machine the outer wall surface of the workpiece to be machined and a first driving mechanism in driving connection with the sliding seat; the moving direction of the sliding seat is consistent with the axial direction of the driving rotating shaft, and the axial lead of the outer arc surface of the machined workpiece is coincident with the axial lead of the driving rotating shaft.

In order to assemble the workpiece to be processed on the connecting seat and ensure that the workpiece to be processed stably rotates along with the driving rotating shaft, the connecting seat comprises a middle part and a connecting support arm which is sleeved and connected with the driving rotating shaft, a first end of the connecting support arm is connected with the workpiece to be processed, a second end of the connecting support arm is connected with a counterweight part, and the counterweight part and the workpiece to be processed are respectively positioned on two sides of the driving rotating shaft and are symmetrically arranged relative to the driving rotating shaft.

In order to facilitate the attachment of the turning tool to the slide, the turning tool assembly comprises a seat attached to the slide, and a turning tool secured to the seat, the cutting head of the turning tool facing the outer wall surface of the workpiece to be machined.

As an improvement, the tool apron is further provided with a grinding wheel assembly and a polishing wheel assembly besides the turning tool, wherein the turning tool, the grinding wheel assembly and the polishing wheel assembly are sequentially arranged from front to back along the advancing direction of the sliding seat; the grinding wheel assembly comprises a fourth driving motor and a grinding wheel piece in driving connection with an output shaft of the fourth driving motor; the polishing wheel assembly comprises a fifth driving motor and a polishing wheel piece in driving connection with an output shaft of the fifth driving motor. The grinding wheel part can polish the outer arc surface formed by cutting, so that the cutting depth of the turning tool can be corrected and finely adjusted, and the machining precision is improved; the polishing wheel piece is arranged, so that the outer arc surface of the workpiece can be smoother, and the polishing wheel piece is a friction force when the workpiece and other workpieces are matched to slide relatively.

In order to detect the roundness of the outer arc surface of the workpiece after the workpiece is machined and improve the machining precision of the workpiece, a roundness detection device for detecting the roundness of the outer arc surface machined and formed on the workpiece is further arranged on the tool apron, wherein the roundness detection device can be a dial indicator or a dial indicator.

In order to enable the sliding seat to stably move relative to a workpiece to be processed, a base is arranged below the sliding seat, a guide rail assembly is arranged on the base, and the sliding seat is in sliding fit with the guide rail assembly; the first driving device comprises a first driving motor and a first ball screw pair connected with an output shaft of the first driving motor, and the first ball screw pair is in driving connection with the sliding seat.

As an improvement, the guide rail assembly comprises a guide rail base arranged on the base and a guide rail arranged on the guide rail base, and the sliding seat is arranged on the guide rail.

In order to make the propelling process of the sliding seat more stable and further improve the cutting precision, the two groups of guide rail assemblies are respectively arranged on two sides of the first ball screw pair, and the extending directions of the two groups of guide rail assemblies are consistent with the extending direction of the first ball screw pair.

In order to effectively drive the driving rotating shaft to rotate, a first spindle box which is in supporting fit with the first end of the driving rotating shaft is arranged on the first supporting seat, and a second spindle box which is in supporting fit with the second end of the driving rotating shaft is arranged on the second supporting seat; the first support seat is further provided with a reduction gearbox and a second driving motor, the first spindle box is connected with the reduction gearbox through a coupler, and an output shaft of the second driving motor is in transmission fit with the reduction gearbox. The reduction gearbox can effectively transmit the power of the second driving motor to the driving rotating shaft, and plays a role in reducing the speed and amplifying the torque.

In order to flexibly adjust the cutting depth of the turning tool so as to cut the outer arc groove or the end surface of the workpiece, the sliding seat is also provided with a feed mechanism for driving the tool apron to be close to or far away from the workpiece to be machined so as to adjust the cutting depth of the turning tool; the cutter feeding mechanism comprises a third driving motor and a third ball screw pair connected with an output shaft of the third driving motor, and the third ball screw pair is in driving connection with the cutter holder; the extending direction of the third ball screw pair is perpendicular to the axial direction of the driving rotating shaft. The tool apron can move and be adjusted relative to a workpiece to be machined on the sliding seat, when a turning tool on the tool apron is located under the driving rotating shaft, the cutting depth of the workpiece is maximum, and when the turning tool moves along with the sliding seat and gradually deviates to one side of the workpiece to be machined, the cutting depth of the workpiece is gradually reduced.

Compared with the prior art, the utility model has the advantages that: the machine tool can efficiently and accurately process the outer arc surface of a large-size workpiece, wherein the turning tool component is fixed on the sliding seat and can reciprocate between the first supporting seat and the second supporting seat along with the sliding seat, the workpiece to be processed is fixed on the driving rotating shaft through the connecting seat and can rotate along with the driving rotating shaft, and the cutting processing of the outer arc surface of the workpiece can be completed by the pushing of the turning tool component while the workpiece rotates, so that the processing efficiency is improved; and secondly, two end parts of the driving rotating shaft are arranged on the first supporting seat and the second supporting seat, so that the driving rotating shaft cannot shake in the process of driving the large-size workpiece to rotate together, and the cutting precision of the outer arc surface of the workpiece is ensured.

Drawings

FIG. 1 is a side view of a large-sized workpiece according to an embodiment of the present invention;

FIG. 2 is a front view of a large-sized workpiece according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a front view angle state of the machine tool according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a left angle state of the machine tool according to an embodiment of the present invention (the supporting seat assembly is not shown);

fig. 5 is a schematic structural diagram of a machine tool in an overlook angle state according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Referring to fig. 1-2, in a large-sized workpiece having an outer arc surface, for example, an arc-shaped sliding seat 41 in the chinese patent application No. CN201811633893.8 (publication No. CN109434188A) of "a table for a broaching machine tool", the arc-shaped sliding seat 41 has an outer wall surface that is an outer arc surface 1a, the outer arc surface 1a is further provided with an outer arc groove 1b coaxially disposed with the outer arc surface 1a, and two axial ends of the arc-shaped sliding seat 41 are further provided with two end surfaces 1 c.

Referring to fig. 3-5, a machine tool for machining an outer arc surface of a large-sized workpiece is capable of machining the arc-shaped sliding seat 41 to form the outer arc surface by a user, and specifically includes a supporting seat assembly and a turning pushing device, the supporting seat assembly includes a first supporting seat 11 and a second supporting seat 12 which are arranged at intervals, wherein a driving rotating shaft 20 is erected between the first supporting seat 11 and the second supporting seat 12, and a connecting seat 30 which is used for assembling a workpiece 1 to be machined and can rotate along with the driving rotating shaft 20 is connected to the driving rotating shaft 20. The turning propulsion device is located below the driving rotating shaft 20, and specifically includes a sliding seat 41, a turning tool assembly 50 and a first driving device, wherein the turning tool assembly 50 is disposed on the sliding seat 41 to process the outer wall surface of the workpiece to be processed, the first driving mechanism is in driving connection with the sliding seat 41, specifically, under the driving of the first driving mechanism, the sliding seat 41 can drive the workpiece to be processed assembled thereon to reciprocate between the first supporting seat 11 and the second supporting seat 12, wherein the moving direction of the sliding seat 41 is consistent with the axial direction of the driving rotating shaft 20, and the axial lead of the outer arc surface 1a after the workpiece is processed coincides with the axial lead of the driving rotating shaft 20.

Referring to fig. 3 and 5, in order to drive the driving rotating shaft 20 to rotate, a first spindle box 13, a reduction box 15 and a second driving motor 17 are arranged on the first supporting seat 11, a second spindle box 14 is arranged on the second supporting seat 12, a first end of the driving rotating shaft 20 is supported and connected to the first spindle box 13, a second end of the driving rotating shaft 20 is supported and matched to the second spindle box 14, specifically, an output shaft of the second driving motor 17 is in transmission fit with the reduction box 15, and the reduction box 15 is connected with the first spindle box 13 through a coupler 16. The reduction gearbox 15 is arranged to effectively transmit the power of the second driving motor 17 to the driving rotating shaft 20, and has the functions of reducing the speed and amplifying the torque. The arrangement of the first spindle box 13 and the second spindle box 14 can make the rotation of the driving rotating shaft 20 more stable, and also facilitate the precise adjustment of the rotating speed of the driving rotating shaft 20, so as to provide the required rotating speed and torque for the workpiece to be processed connected to the driving rotating shaft 20.

The connecting base 30 includes a connecting arm 31, a middle portion of the connecting arm 31 is sleeved and connected with the driving shaft 20, a first end of the connecting arm 31 is connected with the workpiece 1 to be processed, a second end of the connecting arm 31 is connected with a counterweight portion 32, wherein the counterweight portion 32 and the workpiece 1 to be processed are respectively located at two sides of the driving shaft 20 and are symmetrically arranged relative to the driving shaft 20. This kind of connecting seat 30 structure can make the work piece of treating that assembles on connecting seat 30 carry out pivoted rotation process along with drive pivot 20 more steady, avoids appearing rocking or vibrating, influences the machining precision of work piece.

The turning tool assembly 50 comprises a tool seat 51 connected to the slide 41 and a turning tool 52 fixed to the tool seat 51, wherein a cutting head of the turning tool 52 faces an outer wall surface of the workpiece 1 to be machined. In order to flexibly adjust the cutting depth of the turning tool 52 so as to perform cutting processing on the outer circular arc groove 1b or the end surface 1c of the workpiece, a feeding mechanism 70 is further disposed on the sliding base 41, the feeding mechanism 70 is used for driving the tool holder 51 to approach or depart from the workpiece to be processed so as to adjust the cutting depth of the turning tool 52, and specifically includes a third driving motor 71 and a third ball screw pair 72 connected to an output shaft of the third driving motor 71, the third ball screw pair 72 is in driving connection with the tool holder 51, and specifically, the extending direction of the third ball screw pair 72 is perpendicular to the axial direction of the driving rotating shaft 20. More specifically, the tool rest 51 is movably adjustable relative to the workpiece to be machined on the slide 41, and when the turning tool 52 on the tool rest 51 is positioned directly below the driving spindle 20, the cutting depth of the workpiece is the largest, and when the turning tool 52 is gradually deviated to one side from the workpiece to be machined as the slide 41 moves, the cutting depth of the workpiece is gradually reduced.

The tool holder 51 is provided with a grinding wheel assembly 53 and a buffing wheel assembly 54 in addition to the turning tool 52. Specifically, a turning tool 52, a grinding wheel assembly 53, and a buff wheel assembly 54 fixed to the holder 51 are arranged in this order from front to back in the advancing direction of the slide 41. The grinding wheel assembly 53 comprises a fourth drive motor (not shown) and a grinding wheel member in driving connection with an output shaft of the fourth drive motor; the buffing wheel assembly includes a fifth drive motor (not shown) and a buffing wheel member drivingly connected to an output shaft of the fifth drive motor. The grinding wheel part can polish the outer arc surface formed by cutting, so that the cutting depth of the turning tool 52 can be corrected and finely adjusted, and the machining precision is improved; the polishing wheel piece is arranged, so that the outer arc surface of the workpiece can be smoother, and the polishing wheel piece is a friction force when the workpiece and other workpieces are matched to slide relatively.

Referring to fig. 5, in order to detect the roundness of the outer arc surface of the workpiece after the machining, and improve the machining precision of the workpiece, a roundness detection device 35 for detecting the roundness of the outer arc surface machined on the workpiece is further disposed on the tool apron 51, wherein the roundness detection device 35 may be a dial indicator or a dial indicator.

Referring to fig. 3 and 4, in order to drive the sliding base 41 to reciprocate between the first supporting seat 11 and the second supporting seat 12, and complete the feeding process of the to-be-turned tool assembly 50, the first driving device includes a first driving motor 44 and a first ball screw pair 45 connected to an output shaft of the first driving motor 44, and the first ball screw pair 45 is drivingly connected to the sliding base 41. Specifically, a base 42 is arranged below the sliding seat 41, a guide rail assembly 43 is arranged on the base 42, and the sliding seat 41 is in sliding fit with the guide rail assembly 43; in the embodiment, there are two sets of rail assemblies 43, the two sets of rail assemblies 43 are respectively disposed on two sides of the first ball screw pair 45, and the extending direction of the two sets of rail assemblies 43 is consistent with the extending direction of the first ball screw pair 45, so that the moving process of the sliding base 41 is more stable. More specifically, the rail assembly 43 includes a rail base 431 provided on the base 42 and a rail 432 provided on the rail base 431, and the slider 41 is provided on the rail 432.

The machine tool in the embodiment can efficiently and accurately process the outer arc surface of a large-size workpiece, wherein the turning tool assembly 50 is fixed on the sliding seat 41 and can reciprocate between the first supporting seat 11 and the second supporting seat 12 along with the sliding seat 41, the workpiece 1 to be processed is fixed on the driving rotating shaft 20 through the connecting seat 30 and can rotate along with the driving rotating shaft 20, and the workpiece can be cut and processed on the outer arc surface 1a and the outer arc groove 1b by the pushing of the turning tool assembly 50 while rotating, so that the processing efficiency is improved; secondly, the two end parts of the driving rotating shaft 20 are both mounted on the first supporting seat 11 and the second supporting seat 12, so that the driving rotating shaft 20 does not shake during the process of driving the large-size workpiece to rotate together, and the cutting accuracy of the outer arc surface of the workpiece is ensured.

Claims

1. A machine tool for machining an outer arc surface of a large-sized workpiece, characterized by comprising:

the supporting seat assembly comprises a first supporting seat (11) and a second supporting seat (12) which are arranged at intervals, a driving rotating shaft (20) is erected between the first supporting seat (11) and the second supporting seat (12), and the driving rotating shaft (20) is connected with a connecting seat (30) which is used for assembling a workpiece to be processed and can rotate along with the driving rotating shaft (20);

the turning propulsion device is positioned below the driving rotating shaft (20), and comprises a sliding seat (41) capable of moving between a first supporting seat (11) and a second supporting seat (12) in a reciprocating mode, a turning tool assembly (50) assembled on the sliding seat (41) to machine the outer wall surface of a workpiece to be machined, and a first driving mechanism in driving connection with the sliding seat (41);

the moving direction of the sliding seat (41) is consistent with the axial direction of the driving rotating shaft (20), and the axial lead of the outer arc surface of the machined workpiece is superposed with the axial lead of the driving rotating shaft (20).

2. A machine tool for working an extrados of a large-sized workpiece according to claim 1, wherein: the connecting seat (30) comprises a connecting support arm (31) which is sleeved and connected with the driving rotating shaft (20) in the middle part, the first end of the connecting support arm (31) is connected with a workpiece to be processed, the second end of the connecting support arm (31) is connected with a counterweight part (32), and the counterweight part (32) and the workpiece to be processed are respectively positioned on two sides of the driving rotating shaft (20) and are symmetrically arranged relative to the driving rotating shaft (20).

3. A machine tool for working an extrados of a large-sized workpiece according to claim 1, wherein: the turning tool assembly (50) comprises a tool seat (51) connected to the sliding seat (41), and a turning tool (52) fixed on the tool seat (51), wherein the tool bit of the turning tool (52) faces to the outer wall surface of a workpiece to be machined.

4. A machine tool for working an extrados of a large-sized workpiece according to claim 3, wherein: the tool apron (51) is provided with a grinding wheel assembly (53) and a polishing wheel assembly (54) besides the turning tool (52), wherein the turning tool (52), the grinding wheel assembly (53) and the polishing wheel assembly (54) are sequentially arranged from front to back along the advancing direction of the sliding seat (41);

the grinding wheel assembly (53) comprises a fourth driving motor and a grinding wheel piece in driving connection with an output shaft of the fourth driving motor;

the polishing wheel assembly (54) comprises a fifth driving motor and a polishing wheel piece in driving connection with an output shaft of the fifth driving motor.

5. A machine tool for working an extrados of a large-sized workpiece according to claim 3, wherein: and the tool apron (51) is also provided with a roundness detection device (55) for detecting the roundness of the outer arc surface formed on the workpiece.

6. A machine tool for working an extrados of a large-sized workpiece according to claim 1, wherein: a base (42) is arranged below the sliding seat (41), a guide rail assembly (43) is arranged on the base (42), and the sliding seat (41) is in sliding fit with the guide rail assembly (43);

the first driving device comprises a first driving motor (44) and a first ball screw pair (45) connected with an output shaft of the first driving motor (44), and the first ball screw pair (45) is in driving connection with the sliding seat (41).

7. A machine tool for machining an extrados of a large-sized workpiece according to claim 6, wherein: the guide rail assembly (43) comprises a guide rail base (431) arranged on the base (42) and a guide rail (432) arranged on the guide rail base (431), and the sliding seat (41) is arranged on the guide rail (432).

8. A machine tool for machining an extrados of a large-sized workpiece according to claim 6, wherein: the two groups of guide rail assemblies (43) are respectively arranged at two sides of the first ball screw pair (45), and the extending directions of the two groups of guide rail assemblies (43) are consistent with the extending direction of the first ball screw pair (45).

9. A machine tool for working an extrados of a large-sized workpiece according to claim 1, wherein: a first spindle box (13) which is in supporting fit with a first end of the driving rotating shaft (20) is arranged on the first supporting seat (11), and a second spindle box (14) which is in supporting fit with a second end of the driving rotating shaft (20) is arranged on the second supporting seat (12);

the first supporting seat (11) is further provided with a reduction gearbox (15) and a second driving motor (17), the first spindle box (13) is connected with the reduction gearbox (15) through a coupler (16), and an output shaft of the second driving motor (17) is in transmission fit with the reduction gearbox (15).

10. A machine tool for machining an extrados of a large-sized workpiece according to any one of claims 3 to 5, wherein: the sliding seat (41) is also provided with a feed mechanism (70) for driving the tool apron (51) to be close to or far away from a workpiece to be machined so as to adjust the cutting depth of the turning tool (52);

the cutter feeding mechanism (70) comprises a third driving motor (71) and a third ball screw pair (72) connected with an output shaft of the third driving motor (71), and the third ball screw pair (72) is in driving connection with the cutter holder (51);

the extending direction of the third ball screw pair (72) is perpendicular to the axial direction of the driving rotating shaft (20).