CN222153960U - Waterwheel type multi-shaft power head - Google Patents

Abstract

The utility model discloses a waterwheel type multi-shaft power head, which relates to the technical field of machining equipment and comprises a multi-shaft device and a power head assembly, wherein the multi-shaft device comprises a shell, a transmission mechanism and a driven shaft, a plurality of driven shafts are synchronously and rotatably arranged in the shell through the transmission mechanism, the power head assembly comprises a main shaft, a shaft sleeve, a main shaft box, a main shaft rotating mechanism and a main shaft feeding mechanism, the main shaft is rotatably arranged in the shaft sleeve through the main shaft rotating mechanism, the end part of the main shaft is connected with the input end of the transmission mechanism, the shaft sleeve is axially and slidably arranged in the main shaft box through the main shaft feeding mechanism, and the end part of the shaft sleeve is fixedly connected with the shell. The multi-shaft device is combined with the waterwheel type power head assembly, so that the power head has a rotary driving function and an axial feeding function, the whole structure is compact, the occupied space is small, the installation flexibility is high, and the defects in the prior art are effectively overcome.

Description

Waterwheel type multi-shaft power head

Technical Field

The utility model relates to the technical field of machining equipment, in particular to a waterwheel type multi-shaft power head.

Background

The appearance of the multi-shaft power head overcomes the disadvantage of low processing efficiency of the traditional single-shaft power head. The existing concept of multi-axis power head generally comprises three schemes of a power tool turret, a multi-axis machine and an integrated multi-axis spindle head, and the specific differences of the three schemes are as follows:

(1) The power turret is characterized in that more than two cutters are arranged on one rotary cutter disc, and the cutter disc can be driven to rotate through additionally mounted driving components, so that different cutters are switched, and designated cutters are controlled to process a workpiece;

(2) The multi-axis device is characterized in that more than two cutters which can be processed simultaneously are arranged on one shell, and the plurality of cutters can be controlled to work synchronously through additionally carried driving components, so that the same processing treatment is carried out on different workpieces or different positions of the same workpiece;

(3) The integrated multi-shaft spindle head is characterized in that a driving assembly, a transmission assembly and a plurality of cutters are integrally designed in the same shell, and the plurality of cutters are driven to synchronously work through the driving assembly, so that the same processing treatment is carried out on different workpieces or different positions of the same workpiece.

Compared with a power tool turret and an integrated multi-shaft main shaft head, the multi-shaft device has the advantages of simple structure, flexible installation, small occupied space, low cost and the like, and can adapt to the processing requirements of different scenes, so that the multi-shaft device has stronger market competitiveness.

Chinese patent publication No. CN102672742a discloses a transmission mechanism for fixing a head of an automobile brake pad drilling machine, which connects a multi-axis device to an output shaft of a motor through a mounting base, and mounts the mounting base on a slide, thereby making the whole device have an axial feeding function. Although the multi-shaft device can be utilized to realize multi-shaft matching processing to finish the drilling and countersinking forming process required by the automobile brake pad, the whole structure is complex, the problems of low flexibility and large occupied space still exist, and the advantages of the multi-shaft device can not be fully exerted.

In addition, the multi-axis machine in the patent does not have a cutter switching function, so that the purpose of carrying out different processing treatments on the same workpiece at the same position can not be automatically realized like a power turret, and the tool changing treatment or the workpiece fixing position change needs to be carried out manually, so that the operation is complex, the working efficiency is low, and therefore, improvement is needed.

Disclosure of utility model

The utility model provides a waterwheel type multi-shaft power head, which mainly aims to solve the problems in the prior art.

The utility model adopts the following technical scheme:

the waterwheel type multi-shaft power head comprises a multi-shaft device and a power head assembly, wherein the multi-shaft device comprises a shell, a transmission mechanism and driven shafts, a plurality of driven shafts are arranged in the shell in a synchronous rotating mode through the transmission mechanism, the power head assembly comprises a main shaft, a shaft sleeve, a main shaft box, a main shaft rotating mechanism and a main shaft feeding mechanism, the main shaft is arranged in the shaft sleeve in a rotating mode through the main shaft rotating mechanism, the end portion of the main shaft is connected with the input end of the transmission mechanism, the shaft sleeve is arranged in the main shaft box in an axially sliding mode through the main shaft feeding mechanism, and the end portion of the shaft sleeve is fixedly connected with the shell.

The spindle feeding mechanism comprises a connecting seat, a screw pair and a spindle feeding motor, wherein the connecting seat is fixedly connected with the spindle box, the screw pair comprises a screw and a screw nut which are matched with each other, the screw is rotatably arranged in the motor box through the spindle feeding motor, and the screw nut is fixedly connected with the connecting seat.

Further, the power head assembly further comprises a guide mechanism, the guide mechanism comprises a guide rod and a sliding sleeve, one end of the guide rod is fixedly arranged on the motor box, and the other end of the guide rod is slidably connected with the connecting seat through the sliding sleeve.

Further, the middle part of the connecting seat is provided with a mounting part for mounting the spindle box, and two sides of the connecting seat are respectively provided with a first through hole for mounting the screw nut and a second through hole for mounting the sliding sleeve.

Further, a bearing seat is arranged in the motor box, and the screw rod is rotatably arranged in the bearing seat.

Further, a first step surface is arranged on the outer side of the spindle box, and a second step surface matched with the first step surface is arranged on the inner side of the connecting seat.

Further, the spindle rotating mechanism comprises a spindle motor and a transmission assembly arranged in the motor box, and the spindle is connected with the spindle motor through the transmission assembly.

Further, the spindle sleeve is rotatably arranged in the spindle box through the rotary switching mechanism.

Further, the rotary switching mechanism comprises a rotary switching motor and a connecting arm, wherein the connecting arm is arranged in the motor box, one end of the connecting arm is connected with the rotary switching motor, and the other end of the connecting arm is connected with the shaft sleeve.

Further, the unit head subassembly still includes brake mechanism, brake mechanism includes brake block and at least one brake calliper, the brake block set firmly in the axle sleeve is outside, brake calliper set firmly in the motor box, and brake calliper is equipped with and is used for the centre gripping the clamping part of brake block.

Compared with the prior art, the utility model has the beneficial effects that:

1. The multi-shaft device is combined with the waterwheel type power head assembly, so that the power head has a rotary driving function and an axial feeding function, the whole structure is compact, the occupied space is small, the installation flexibility is high, and the defects in the prior art are effectively overcome.

2. The rotary switching mechanism can drive the multi-axis device to rotate for a certain angle, so that the cutter position switching function is realized, the operation steps are simplified, the working efficiency is improved, the power head can be suitable for special processing requirements of processing scenes such as a water tap and the like, and the market competitiveness is stronger.

Drawings

Fig. 1 is a perspective view of a first state of the utility model.

Fig. 2 is a perspective view of a second state of the present utility model.

FIG. 3 is a schematic cross-sectional view of the present utility model.

Fig. 4 is a schematic structural view of the multiaxial device in the present utility model.

Fig. 5 is a schematic structural view of a connecting arm in the present utility model.

The device comprises a 1-multiaxis device, a 11-shell, a 111-box, a 112-cover, a 12-driven shaft, a 13-driving gear, a 14-driven gear, a 2-main shaft, a 3-shaft sleeve, a 31-motor box, a 311-bearing seat, a 312-bearing, a 4-main shaft box, a 41-first step surface, a 5-main shaft rotating mechanism, a 51-main shaft motor, a 52-motor synchronous wheel, a 53-main shaft synchronous wheel, a 54-synchronous belt, a 6-main shaft feeding mechanism, a 61-connecting seat, a 611-second step surface, a 62-main shaft feeding motor, a 63-lead screw, a 64-lead screw nut, a 65-mounting seat, a 7-rotating switching mechanism, a 71-rotating switching motor, a 72-connecting arm, a 721-first sleeve, a 7211-guiding groove, a 7213-adjusting groove, a 722-second sleeve, a 723- 匚 -shaped crank arm, a 724-connecting cylinder, a 7241-first mounting hole, a 7242-second mounting hole, an 8-guiding mechanism, a 81-guiding rod, a 82-sliding sleeve, a 9-braking mechanism and a 92-braking plate.

Detailed Description

Specific embodiments of the present utility model will be described below with reference to the accompanying drawings. Numerous details are set forth in the following description in order to provide a thorough understanding of the present utility model, but it will be apparent to one skilled in the art that the present utility model may be practiced without these details.

As shown in fig. 1 to 3, the waterwheel type multi-shaft power head comprises a multi-shaft device 1 and a power head assembly, wherein the multi-shaft device 1 comprises a shell 11, a transmission mechanism and a driven shaft 12, a plurality of driven shafts 12 are synchronously and rotatably arranged in the shell 11 through the transmission mechanism, the power head assembly comprises a main shaft 2, a shaft sleeve 3, a main shaft box 4, a main shaft rotating mechanism 5, a main shaft feeding mechanism 6 and a rotation switching mechanism 7, the main shaft 2 is rotatably arranged in the shaft sleeve 3 through the main shaft rotating mechanism 5, the end part of the main shaft 2 is connected with the input end of the transmission mechanism, the shaft sleeve 3 is axially slidably and rotatably arranged in the main shaft box 4 through the main shaft feeding mechanism 6 and the rotation switching mechanism 7, and the end part of the shaft sleeve 3 is fixedly connected with the shell 11.

As shown in fig. 1 to 3, a spindle box 4 is fixedly mounted on a machine tool, a plurality of cutters (not shown in the drawings) are respectively mounted on a driven shaft 12 of a multi-axis machine 1, when the multi-axis machine is in operation, a spindle rotating mechanism 5 drives a spindle 2 to rotate, so that the cutters on the driven shaft 12 are driven by a transmission mechanism to synchronously rotate, and a workpiece is machined, a spindle feeding mechanism 6 drives a shaft sleeve 3 to axially slide, so that the spindle 2 and the multi-axis machine 1 are driven to axially slide, so that the multi-axis machine 1 has an axial feeding function, and the spindle rotating mechanism 5 drives the shaft sleeve 3 to rotate, so that the spindle 2 and the multi-axis machine 1 are driven to rotate, so that the multi-axis machine 1 has a cutter position switching function.

In order to more clearly illustrate the design concept of the present utility model, the specific structures and the working principles of the spindle rotation mechanism 5, the spindle feed mechanism 6 and the rotation switching mechanism 7 are respectively described in detail below.

1. Spindle rotation mechanism 5

As shown in fig. 1 to 3, the spindle rotation mechanism 5 includes a spindle motor 51 and a transmission assembly including a motor synchronizing wheel 52, a spindle synchronizing wheel 52, and a timing belt 54. The spindle sleeve 3 extends to the outside of the spindle box 4 and is provided with a motor box 31, the spindle motor 51 is arranged beside the motor box 31, the output end of the spindle motor 51 extends into the motor box 31 and is provided with a motor synchronizing wheel 52, the spindle 2 extends into the motor box 31 and is provided with a spindle synchronizing wheel 52, and the synchronous belt 54 is in transmission connection with the motor synchronizing wheel 52 and the spindle synchronizing wheel 52, so that transmission connection between the spindle motor 51 and the spindle 2 is realized.

As shown in fig. 3 and 4, the transmission mechanism of the multiaxial device 1 comprises a driving gear 13 and a plurality of driven gears 14, wherein the driving gear 13 is arranged at the end part of the main shaft 2, and the driven gears 14 are arranged at the end part of the driven shaft 12 and are meshed with the driving gear 13. When the spindle motor 51 works, the spindle 2 starts to rotate, and the driving gear 13 drives the driven gears 14 to rotate, so that the driven shaft 12 is driven to rotate, and then the cutters mounted on the driven shaft 12 start to rotate, and finally synchronous work of a plurality of cutters is realized.

As shown in fig. 1 to 4, the housing 11 includes a case 111 and a cover 112 which are detachably connected, a transmission mechanism and a driven shaft 12 are installed in the case 111, and an end portion of the main shaft 2 penetrates the cover 112 and is connected to the driving gear 13. As a preferred solution, the multi-axis device 1 of the present embodiment is provided with three driven shafts 12, and three different cutters are respectively installed on the three driven shafts 12, so that the multi-axis device 1 has three different processing functions.

2. Spindle feed mechanism 6

As shown in fig. 1 to 3, the spindle feed mechanism 6 includes a connection base 61, a spindle pair including a spindle 63 and a spindle nut 64 fitted to each other, and a spindle feed motor 62, the connection base 61 being fixedly connected to the spindle box 4, the spindle feed motor 62 being disposed beside the motor box 31, the spindle 63 being rotatably disposed in the motor box 31 by the spindle feed motor 62, the spindle nut 64 being fixedly connected to the connection base 61. When the spindle feed motor 62 works, the screw 63 rotates synchronously with the output shaft of the spindle feed motor 62, and the screw nut 64 is fixedly connected to the connecting seat 61, and the connecting seat 61 is fixedly connected to the spindle box 4, so that the screw 63 rotates in the screw nut 64 to drive the motor box 31 and the spindle feed motor 62 to slide along the axial direction, and the two ends of the shaft sleeve 3 are respectively connected to the motor box 31 and the housing 11 of the multi-axis device 1, so that the transmission connection function is realized to drive the multi-axis device 1 to realize the axial feed.

As shown in fig. 1 to 3, the power head assembly further includes a guide mechanism 8, the guide mechanism 8 includes a guide rod 81 and a sliding sleeve 82, one end of the guide rod 81 is fixedly disposed on the motor box 31, and the other end of the guide rod 81 is slidably connected to the connection seat 61 through the sliding sleeve 82. The guiding mechanism 8 can play a role in supporting and guiding, and can ensure that the motor box 31 and each motor stably and smoothly slide along the axial direction, thereby being beneficial to accurately controlling the multi-shaft device 1 to realize axial feeding and effectively improving the rigidity, accuracy and reliability of the power head.

As shown in fig. 1 to 3, specifically, a bearing block 311 is provided in the motor case 31, and the screw 63 is rotatably provided in the bearing block 311. A mounting seat 65 is further provided between the spindle feed motor 62 and the motor case 31, and the screw 63 extends into the mounting seat 65 and is connected to an output shaft of the spindle feed motor 62 through a coupling (not shown). The mounting seat 65 can play a role of protecting the coupler, so that the connection between the screw 63 and the spindle feed motor 62 is firmer and more reliable.

As shown in fig. 1 to 3, specifically, the middle part of the connection seat 61 is provided with a mounting part for mounting the headstock 4, and two sides of the connection seat 61 are respectively provided with a first through hole for mounting the screw nut 64 and a second through hole for mounting the sliding sleeve 82, so that the spindle feeding mechanism 6 and the guiding mechanism 8 are uniformly distributed on two sides of the headstock 4, and the structure of the power head is more compact, reasonable, stable and reliable. In order to make the fit between the headstock 4 and the connecting seat 61 more tightly and firmly, the present embodiment is provided with a first step surface 41 on the outer side of the headstock 4, and a second step surface 611 adapted to the first step surface 41 on the inner side of the connecting seat 61.

3. Rotation switching mechanism 7

As shown in fig. 1, the rotation switching mechanism 7 includes a rotation switching motor 71 and a connection arm 72, the rotation switching motor 71 is provided between the spindle motor 51 and the spindle feed motor 62, the connection arm 72 is provided in the motor case 31, and one end of the connection arm 72 is connected to an output shaft of the rotation switching motor 71, and the other end of the connection arm 72 is connected to the sleeve 3. When the multi-axis machine is in operation, the connecting arm 72 is driven by the rotary switching motor 71 to perform rotary motion, so that the shaft sleeve 3 is driven to rotate, the main shaft 2 and the multi-axis machine 1 are driven to rotate while the shaft sleeve 3 rotates, and therefore a designated cutter on the multi-axis machine 1 is rotated by a certain angle, and the machining position of a workpiece is aligned.

As shown in fig. 1 and 2, the power head assembly further includes a brake mechanism 9, where the brake mechanism 9 includes a brake pad 91 and at least one brake caliper 92, the brake pad 91 is fixedly disposed outside the shaft sleeve 3, the brake caliper 92 is fixedly disposed at the bottom of the motor box 31, and the brake caliper 92 is provided with a clamping portion for clamping the brake pad 91. After the position of the cutter is switched, in order to prevent the shaft sleeve 3 from deflecting in the processing process, the brake pads 91 are clamped by the brake calipers 92, so that the effect of limiting the rotation of the shaft sleeve 3 is achieved, and the structure of the power head is more stable and reliable. Preferably, the bottom of the motor box 31 is provided with two brake calipers 92 symmetrically arranged to each other, so as to ensure that the brake pads 91 can be firmly clamped. The control principle of the brake caliper 92 is prior art and will not be described in detail herein.

As shown in fig. 3 and 5, the connecting arm 72 includes a first sleeve 721, a second sleeve 722, and 匚 -shaped crank arms 723, the first sleeve 721 is sleeved outside the output shaft of the rotary switching motor 71, the second sleeve 722 is sleeved outside the sleeve 3, both ends of the 匚 -shaped crank arms 723 are respectively connected to the first sleeve 721 and the second sleeve 722, and a yielding portion for yielding the transmission assembly is formed between the first sleeve 721, the 匚 -shaped crank arms 723 and the second sleeve 722. The design makes the arrangement in the motor box 31 more compact and reasonable, greatly reduces the volume of the motor box 31, and makes the overall occupation space of the power head smaller and the installation flexibility higher.

As shown in fig. 3 and 5, specifically, one side of the first sleeve 721 is provided with a guide groove 7211, the other side of the first sleeve 721 is provided with a pair of mounting lugs 7212, and an adjustment groove 7213 is provided between the two mounting lugs 7212, whereby quick and accurate abutment between the first sleeve 721 and the rotary switching motor 71 can be achieved.

As shown in fig. 3 and 5, the connecting arm 72 further includes a connecting cylinder 724, the connecting cylinder 724 is provided with a first mounting hole 7241 and a second mounting hole 7242 arranged inside and outside along an axial direction of the connecting cylinder 724, the shaft sleeve 3 is arranged at the bottom of the connecting cylinder 724 by matching a first bolt (not shown in the drawings) with the first mounting hole 7241, and the second sleeve 722 is arranged at the top of the connecting cylinder 724 by matching a second bolt (not shown in the drawings) with the second mounting hole 7242. The design can reduce the installation difficulty of the shaft sleeve 3 and the connecting arm 72, and the connection between the shaft sleeve 3 and the connecting arm 72 is firmer and more reliable.

As shown in fig. 1, a bearing 312 for supporting the sleeve 3 is provided in the motor case 31, thereby ensuring that the sleeve 3 can smoothly rotate in the motor case 31. In this embodiment, the bearing 312 is preferably a crossed roller turntable bearing 312, and the crossed roller turntable bearing 312 has the advantages of compact structure, light weight, high manufacturing precision, small assembly gap, and the like, and can bear axial force overturning moment and larger radial force at the same time.

As shown in fig. 1, the power head provided in this embodiment may be suitable for a processing scenario in which different processing treatments are sequentially performed on the same workpiece at the same position. The tap workpiece is fixed at a designated position of a machine tool by taking a machining scene of a tap as an example, three different cutters are respectively arranged on three driven shafts 12 of a multi-spindle machine 1, a first cutter is aligned with the machining position of the tap workpiece, the first cutter is driven by a spindle rotating mechanism 5 to perform rough machining and drilling on the tap workpiece, then the multi-spindle machine 1 is driven by a spindle switching mechanism to rotate, a second cutter is aligned with the machining position of the tap workpiece, the second cutter is driven by the spindle rotating mechanism 5 to perform finish machining and drilling on the tap workpiece, finally the multi-spindle machine 1 is driven by the spindle switching mechanism to rotate, a third cutter is aligned with the machining position of the tap workpiece, the third cutter is driven by the spindle rotating mechanism 5 to perform tapping treatment, the axial feeding amount of the multi-spindle machine 1 is regulated in real time in the machining process, the accurate machining of the cutter aligned with the machining position is ensured, and therefore, different machining treatments on the same tap workpiece and the same machining position can be completed by using one power head.

In the tap workpiece machining process exemplified in this example, although three tools are rotated synchronously, only the tool facing the machining position is in the working state, and the other two tools are in the idle running state. However, this does not mean that the specific implementation of the present embodiment is limited to this, and in other embodiments, the size and power of the multiaxial device 1 may be set reasonably so that the three tools respectively perform different processing on different positions of the same workpiece, or the three tools respectively perform different processing on the same position of different workpieces, thereby improving the working efficiency.

The foregoing is merely illustrative of specific embodiments of the present utility model, but the design concept of the present utility model is not limited thereto, and any insubstantial modification of the present utility model by using the design concept shall fall within the scope of the present utility model.

Claims (10)

1. The waterwheel type multi-shaft power head comprises a multi-shaft device and a power head assembly and is characterized in that the multi-shaft device comprises a shell, a transmission mechanism and driven shafts, a plurality of driven shafts are arranged in the shell in a synchronous rotating mode through the transmission mechanism, the power head assembly comprises a main shaft, a shaft sleeve, a main shaft box, a main shaft rotating mechanism and a main shaft feeding mechanism, the main shaft is arranged in the shaft sleeve in a rotating mode through the main shaft rotating mechanism, the end portion of the main shaft is connected with the input end of the transmission mechanism, the shaft sleeve is arranged in the main shaft box in an axially sliding mode through the main shaft feeding mechanism, and the end portion of the shaft sleeve is fixedly connected with the shell.

2. The waterwheel type multi-shaft power head as claimed in claim 1, wherein the shaft sleeve extends to the outside of the main shaft box and is provided with a motor box, the main shaft feeding mechanism comprises a connecting seat, a screw pair and a main shaft feeding motor, the connecting seat is fixedly connected to the main shaft box, the screw pair comprises a screw and a screw nut which are matched with each other, the screw is rotatably arranged in the motor box through the main shaft feeding motor, and the screw nut is fixedly connected to the connecting seat.

3. The waterwheel type multi-shaft power head as claimed in claim 2, wherein the power head assembly further comprises a guide mechanism, the guide mechanism comprises a guide rod and a sliding sleeve, one end of the guide rod is fixedly arranged on the motor box, and the other end of the guide rod is slidably connected to the connecting seat through the sliding sleeve.

4. A waterwheel type multi-shaft power head as set forth in claim 3 wherein said connecting seat has a mounting portion for mounting said spindle box at the middle thereof, and a first through hole for mounting said screw nut and a second through hole for mounting said sliding sleeve are provided at both sides of the connecting seat.

5. A waterwheel type multi-shaft power head as claimed in claim 2 wherein a bearing seat is arranged in the motor box, and the screw rod is rotatably arranged in the bearing seat.

6. The waterwheel type multi-shaft power head of claim 2, wherein a first step surface is arranged on the outer side of the main shaft box, and a second step surface matched with the first step surface is arranged on the inner side of the connecting seat.

7. A waterwheel type multi-shaft power head as claimed in claim 2 wherein the main shaft rotating mechanism comprises a main shaft motor and a transmission assembly arranged in the motor box, and the main shaft is connected with the main shaft motor through the transmission assembly.

8. A waterwheel type multi-axis power head as claimed in claim 2 further comprising a rotation switching mechanism, wherein the shaft sleeve is rotatably arranged in the main shaft box through the rotation switching mechanism.

9. The waterwheel type multi-shaft power head of claim 8 wherein the rotary switching mechanism comprises a rotary switching motor and a connecting arm, wherein the connecting arm is arranged in the motor box, one end of the connecting arm is connected with the rotary switching motor, and the other end of the connecting arm is connected with the shaft sleeve.

10. The waterwheel type multi-shaft power head as claimed in claim 8, wherein the power head assembly further comprises a brake mechanism, the brake mechanism comprises a brake pad and at least one brake caliper, the brake pad is fixedly arranged outside the shaft sleeve, the brake caliper is fixedly arranged in the motor box, and the brake caliper is provided with a clamping part for clamping the brake pad.