CN111546063A - Single-station servo tapping chamfering machine - Google Patents

Abstract

The invention relates to a single-station servo tapping and chamfering machine, which comprises a jig for loading workpieces; the workpiece is arranged above the jig; Multiple tools correspond to multiple holes to be processed; the tools are chamfering drills or taps; the fixture is provided with through holes for the tools to pass through; it also includes multiple chucks for clamping the tools, which are used to drive multiple tools. A collet rotating assembly for rotating the collet, and a jig longitudinal moving assembly for driving the jig to move longitudinally; multiple collets correspond to multiple tools one-to-one; multiple holes to be processed on the workpiece can be inverted at the same time angle, high efficiency.

Description

A single-station servo tapping chamfering machine

technical field

The invention relates to the technical field of mechanical processing, and more particularly to a single-station servo tapping chamfering machine.

Background technique

In production and processing, it is often necessary to chamfer the holes on the workpiece. For example, in the production and processing of the communication filter cover, it is necessary to chamfer the holes on the communication filter cover. The existing processing method is to use The engraving machine chamfers the holes on the workpiece, but this processing method can only chamfer one hole at a time, and the efficiency is low.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a single-station servo tapping and chamfering machine for the above-mentioned defects of the prior art.

The technical scheme adopted by the present invention to solve its technical problems is:

A single-station servo tapping and chamfering machine is constructed, which includes a jig for loading workpieces; the workpiece is arranged above the jig; the lower part of the jig corresponds to a plurality of waiting parts of the workpiece. The machining hole is provided with a plurality of cutters; the cutters are in one-to-one correspondence with the holes to be machined; the cutters are chamfering drills or taps; the fixture is provided with through holes for the cutters to pass through ; also includes a plurality of chucks for clamping the tool, a chuck rotating assembly for driving a plurality of the chucks to rotate, and a jig longitudinal movement assembly for driving the jig to move longitudinally; multiple Each of the chucks is in one-to-one correspondence with a plurality of the tools.

The single-station servo tapping and chamfering machine according to the present invention further comprises a jig mounting frame for installing the jig; the jig is slidably arranged on the jig mounting frame; The tool longitudinal movement assembly includes a pressure plate disposed above the workpiece, a pressure plate longitudinal movement assembly for driving the pressure plate to move longitudinally, and a reset piece for resetting the fixture.

The single-station servo tapping and chamfering machine according to the present invention, wherein the fixture is fixed with a first guide rod; Linear bearing; the first guide rod passes through the first linear bearing; the reset member is a spring; the spring is sleeved outside the first guide rod; one end of the spring is pressed against the On the fixture mounting frame, the other end is pressed against the fixture.

The single-station servo tapping and chamfering machine according to the present invention further includes a pressure plate mounting frame for installing the pressure plate longitudinal movement assembly; the pressure plate longitudinal movement assembly includes a screw rod, and a A lead screw nut, and a lead screw nut rotating assembly that drives the lead screw nut to rotate; one end of the lead screw is fixedly connected with the pressure plate; the lead screw nut is rotatably arranged on the pressure plate mounting frame.

The single-station servo tapping and chamfering machine of the present invention, wherein the screw nut rotating assembly includes a first servo motor and a transmission sleeve; the output shaft of the first servo motor is fixedly sleeved with a first drive a synchronizing wheel; the outer fixed sleeve of the transmission sleeve is provided with a first driven synchronizing wheel that cooperates with the first driving synchronizing wheel; the first driven synchronizing wheel and the first driving synchronizing wheel pass through the first synchronizing belt connection; the transmission sleeve is sleeved outside the screw nut and is fixedly connected with the screw nut; the pressure plate mounting frame is fixed with a mounting sleeve matched with the transmission sleeve; the transmission sleeve The barrel is passed through the installation sleeve and is rotatably connected with the installation sleeve.

In the single-station servo tapping and chamfering machine of the present invention, a second guide rod is fixed on the pressure plate; a second linear bearing matched with the second guide rod is fixed on the pressure plate mounting frame; The second guide rod passes through the second linear bearing.

The single-station servo tapping chamfering machine of the present invention, wherein the chuck rotating assembly includes a multi-axis gearbox; the multi-axis gearbox is provided with an input shaft and a plurality of output shafts;

The chuck rotating assembly further includes a drive assembly for driving the input shaft of the multi-shaft gearbox to rotate, and a plurality of transmission assemblies; a plurality of the transmission assemblies correspond to the plurality of the chucks one-to-one; the multi-axis The output shaft of the gear box drives the chuck to rotate through the transmission assembly; the transmission assembly is rotatably connected with the fixture mounting frame.

In the single-station servo tapping chamfering machine according to the present invention, wherein the transmission assembly includes a first transmission rod and a second transmission rod; the first transmission rod is connected to the multi-axis through the second transmission rod The output shaft of the gear box is connected; the end of the first transmission rod away from the second transmission rod is fixed with the chuck; the first transmission rod is rotatably connected with the fixture mounting frame.

In the single-station servo tapping chamfering machine according to the present invention, wherein the second transmission rod includes an inner rod and an outer rod; an end face of the outer rod is provided with a movable groove for matching with the inner rod, and the other One end is connected with the output shaft of the multi-shaft gearbox through a first universal joint; the cross section of the movable groove is a polygon; the cross section of the inner rod is a polygon; one end of the inner rod is arranged on the movable groove In the groove, the other end is connected with the first transmission rod through a second universal joint.

In the single-station servo tapping and chamfering machine of the present invention, wherein the drive assembly includes a second servo motor; the output shaft of the second servo motor is fixedly sleeved with a second driving synchronizing wheel; the multi-axis The input shaft of the gear box is fixedly sleeved with a second driven synchronous wheel matched with the second driving synchronous wheel; the second driving synchronous wheel and the second driven synchronous wheel are connected by a second synchronous belt.

The beneficial effect of the invention is that: when chamfering the hole to be machined on the workpiece, the chamfering bit is first clamped on the chuck, then the workpiece is loaded on the fixture, and then the chuck rotating assembly is used to drive a plurality of chucks In this way, multiple chamfering bits are driven to rotate, and then the fixture longitudinal movement component is used to drive the fixture to move downward. During this process, the workpiece moves down with the fixture, and the multiple chamfering bits reach the corresponding via holes respectively. Multiple holes to be machined on the workpiece are chamfered. After the chamfering is completed, the jig is moved upward by the jig longitudinal movement component to realize stripping and reset, and finally the processed workpiece is removed from the jig. When tapping the hole to be machined on the workpiece, just replace the chamfering bit with a wire tap. The rest of the machining process is similar to the chamfering process, so I won’t go into details here; The hole is chamfered with high efficiency; it can not only be chamfered but also tapped, and has a wide range of applications; the workpiece is placed above the jig, which is convenient for loading the workpiece; the tool is placed under the jig, and the jig can play a protective role. When loading the workpiece on the fixture, the tool will scratch the holder, and the safety is high; using the chuck rotating component to drive multiple tools to rotate at the same time, the rotation of multiple tools can be synchronized, and the processing consistency is good; through the fixture The longitudinal movement component drives the jig to move longitudinally to achieve feeding and good processing consistency.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments. Ordinary technicians can also obtain other drawings based on these drawings without creative labor:

1 is a schematic structural diagram of a single-station servo tapping chamfering machine according to Embodiment 1 of the present invention;

2 is a sectional view of a single-station servo tapping chamfering machine according to Embodiment 1 of the present invention;

Fig. 3 is the enlarged view of A place in Fig. 2;

Fig. 4 is an enlarged view at B in Fig. 2;

5 is a schematic structural diagram of a single-station servo tapping and chamfering machine according to Embodiment 2 of the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, and Not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1

The schematic diagram of the structure of the single-station servo tapping and chamfering machine of the first embodiment is shown in FIG. 1 , and refer to FIGS. 2 to 4 at the same time; Above; the lower part of the jig 7 is provided with a plurality of cutters 24 corresponding to the plurality of holes to be machined in the workpiece 10; the plurality of cutters 24 are in one-to-one correspondence with the plurality of holes to be machined; the cutters 24 are chamfering drills or taps; the jig 7 There is a through hole 38 for the tool to pass through; it also includes a plurality of chucks 25 for clamping the tool 24, a chuck rotating assembly 54 for driving the plurality of chucks 25 to rotate, and for driving the jig 7 to move longitudinally The jig longitudinal movement assembly (not marked in the figure); the plurality of chucks 25 correspond to the plurality of tools 24 one-to-one.

When chamfering the hole to be machined on the workpiece 10, first clamp the chamfering bit on the collet 25, then load the workpiece 10 on the fixture 7, and then use the collet rotating assembly 54 to drive a plurality of collets 25 to thereby Drive a plurality of chamfering drills to rotate, and then use the jig longitudinal moving component to drive the jig 7 to move downward. During this process, the workpiece 10 moves down with the jig 7, and the plurality of chamfering drills pass through their corresponding passes. The holes 38 reach the multiple to-be-machined holes on the workpiece 10 and chamfer them. After the chamfering is completed, the jig 7 is moved upward by the jig longitudinal movement component to realize stripping and reset, and finally the workpiece is processed. 10 can be removed from the fixture 7; when tapping the to-be-machined hole on the workpiece 10, just replace the chamfering drill with a tap, and the rest of the processing process is similar to the chamfering process, so I will not repeat it here; Chamfering a plurality of holes to be machined on the workpiece 10 has high efficiency; it can not only chamfer but also tap, and has a wide range of applications; the workpiece 10 is arranged above the jig 7, which is convenient for loading the workpiece 10; Below the jig 7, the jig 7 can play a protective role to prevent the tool 24 from scratching the holder when the workpiece 10 is loaded on the jig 7, and the safety is high; the chuck rotating assembly 54 is used to drive multiple tools at the same time 24 rotates, the rotation of multiple cutters 24 can be kept synchronous, and the processing consistency is good; the longitudinal movement of the jig 7 is driven by the jig longitudinal movement component, so as to realize the feeding and the processing consistency is good.

It should be noted that, when chamfering, the downward moving distance of the jig 7 is set according to the size of the chamfer, and when tapping, the downward moving distance of the jig 7 is set according to the depth of the tooth hole.

Preferably, it also includes a jig mounting frame 9 for installing the jig 7; the jig 7 is slidably arranged on the jig mounting frame 9; the jig longitudinal movement assembly includes a pressure plate 6 arranged above the workpiece for driving the pressure plate 6 Longitudinal moving platen longitudinal movement assembly 11 and reset member 8 for resetting fixture 7 .

The pressure plate 6 is driven downward by the pressure plate longitudinal moving assembly 11. After the pressure plate 6 contacts the workpiece 10, it presses the workpiece 10 and the jig 7 downward, and the jig 7 slides downward relative to the jig mounting frame 9, so that the jig 7 can be moved downward. Move down; after the processing is completed, the pressure plate longitudinal moving assembly 11 drives the pressure plate 6 to move upward, the pressure plate 6 no longer presses the workpiece 10 and the fixture 7 downward, and the fixture 7 moves upward under the action of the reset piece 8 to realize the removal of material and Reset; in the process of processing, the pressing plate 6 always presses the workpiece 10, which improves the stress of the workpiece 10 and improves the processing effect.

Preferably, the fixture 7 is fixed with a first guide rod 37; the fixture mounting frame 9 is fixed with a first linear bearing 36 that cooperates with the first guide rod 37; the first guide rod 37 passes through the first straight line Inside the bearing 36 ; the reset member 8 is a spring 8 ; the spring 8 is sleeved outside the first guide rod 37 ;

By arranging the first guide rod 37 and the first linear bearing 36, the fixture 7 is slidably arranged on the fixture mounting frame 9, and the first guide rod 37 and the first linear bearing 36 can also play a guiding role. Make the movement of the fixture 7 more stable and accurate; the reset member 8 is the spring 8. When the pressure plate 6 presses the workpiece 10 and the fixture 7, the spring 8 is deformed, and the fixture 7 and the workpiece 10 move down smoothly. When the pressure plate 6 is released When the workpiece is 10, the spring 8 returns to its original state, and the fixture 7 moves up under the action of the spring 8 to complete the removal and reset; at the moment when the pressure plate 6 contacts the workpiece 10, the spring 8 can also play a buffering role, lowering the workpiece 10. the impact received.

Preferably, the jig mounting bracket 9 is arranged below the jig 7 to facilitate the installation of the jig 7 .

Preferably, it also includes a pressure plate mounting frame 4 for installing the pressure plate longitudinal movement assembly 11; the pressure plate longitudinal movement assembly 11 includes a lead screw 13, a lead screw nut 14 matched with the lead screw 13, and a lead screw for driving the lead screw nut 14 to rotate The nut rotating assembly 57; one end of the screw rod 13 is fixedly connected with the pressing plate 6; the screw nut 14 is rotated and arranged on the pressing plate mounting frame 4.

When it is necessary to drive the pressure plate 6 to move longitudinally, the lead screw nut 14 is driven by the lead screw nut rotating assembly 57 to rotate, the lead screw 13 will move longitudinally under the action of the lead screw nut 14, and the pressure plate 6 fixed with the lead screw 13 will occur. Longitudinal movement; the pressure plate 6 is fixedly connected with the screw rod 13, and the connection is convenient.

Preferably, the screw nut rotating assembly 57 includes the first servo motor 21 and the transmission sleeve 15 ; the output shaft of the first servo motor 21 is fixedly sleeved with the first driving synchronizing wheel 23 ; the outer fixed sleeve of the transmission sleeve 15 is provided with a The first driven synchronous wheel 20 matched with the first driving synchronous wheel 23; the first driven synchronous wheel 20 and the first driving synchronous wheel 23 are connected by a first synchronous belt (not shown in the figure); the transmission sleeve 15 is sleeved on the The screw nut 14 is outside and is fixedly connected with the screw nut 14; the pressure plate mounting frame 4 is fixedly provided with a mounting sleeve 16 matched with the transmission sleeve 15; 16 Turn the connection.

When it is necessary to drive the pressure plate 6 to move longitudinally, the first servo motor 21 is used to drive the first driving synchronous wheel 23 to rotate, and the first driving synchronous wheel 23 drives the first driven synchronous wheel 20 to rotate through the first synchronous belt, and the first driven synchronous wheel 20 drives the transmission sleeve 15 to rotate, the transmission sleeve 15 drives the lead screw nut 14 to rotate, the lead screw 13 moves longitudinally under the action of the lead screw nut 14, and the pressure plate 6 moves longitudinally under the drive of the lead screw 13; the lead screw 13 is inserted into the screw nut 14, the screw nut 14 is inserted into the transmission sleeve 15, and the structure is compact.

It should be noted that the transmission sleeve 15 can be rotatably connected to the installation sleeve 16 through a bearing.

Preferably, the pressure plate 6 is fixed with a second guide rod 19 ; the pressure plate mounting frame 4 is fixed with a second linear bearing 18 matched with the second guide rod 19 ;

The arrangement of the second guide rod 19 and the second linear bearing 18 can prevent the pressure plate 6 from tilting to a certain extent, and can also play the role of guiding the pressure plate 6 .

Preferably, the collet rotating assembly 54 includes a multi-shaft gearbox 12; the multi-axial gearbox 12 is provided with an input shaft 32 and a plurality of output shafts (not shown in the figure); the collet rotating assembly 54 also includes a driving multi-shaft gear The drive assembly (not marked in the figure) for the rotation of the input shaft 32 of the box 12, and a plurality of transmission assemblies 56; the plurality of transmission assemblies 56 correspond to the plurality of chucks 25 one-to-one; the output shaft of the multi-shaft gearbox 12 passes through the transmission assembly 56 drives the chuck 25 to rotate; the transmission assembly 56 is rotatably connected to the fixture mounting frame 9 .

During chamfering, the input shaft of the multi-shaft gearbox 12 is driven to rotate by the drive assembly, so that the multiple output shafts of the multi-shaft gearbox 12 rotate simultaneously, and the plurality of cutters 24 are driven by the plurality of transmission assemblies 56 to rotate simultaneously.

It should be noted that the multi-shaft gearbox 12 is an existing multi-shaft gearbox.

Preferably, the transmission assembly 56 includes a first transmission rod 27 and a second transmission rod 55; the first transmission rod 27 is connected to the output shaft of the multi-shaft gearbox 12 through the second transmission rod 55; the first transmission rod 27 is far away from the second transmission rod One end of the rod 55 is fixed with the chuck 25 ; the first transmission rod 27 is rotatably connected with the fixture mounting frame 9 .

When the output shaft of the multi-shaft gearbox rotates, the cutter 24 is driven to rotate through the second transmission rod 55 and the first transmission rod 27; The transmission rod 27 needs to be rotatably connected with the fixture mounting frame 9. If it is directly connected with the output shaft of the multi-shaft gearbox 12, it will cause difficulty in the installation of the first transmission rod 27. The setting of the second transmission rod 55 can solve the problem well. this problem.

Preferably, the second transmission rod 55 includes an inner rod 29 and an outer rod 30; one end face of the outer rod 30 is provided with a movable groove 34 that cooperates with the inner rod 29, and the other end is connected to the multi-shaft gearbox 12 through the first universal joint 33. The cross-section of the movable groove 34 is polygonal; the cross-section of the inner rod 29 is polygonal; connect.

The cross-section of the inner rod 29 is a polygon, and the outer rod 30 is provided with a movable groove 34 which is matched with the inner rod 29. The cross-section of the movable groove 34 is a polygon suitable for the inner rod 29. In this setting, one is to make the outer rod 30 When driven by the output shaft of the multi-shaft gearbox 12 to rotate, the inner rod 29 will rotate synchronously under the action of the movable groove 34, thereby driving the cutter 24 to rotate. Second, the inner rod 29 and the outer rod 30 can move relative to each other, so that The length of the second transmission rod 55 can be changed; the arrangement of the first universal joint 28 and the second universal joint 33 allows the second transmission rod 55 to be relative to the first transmission rod 27 and the output shaft of the multi-shaft gearbox 12 Inclination occurs; the length of the second transmission rod 55 can be changed, and can be inclined relative to the first transmission rod 27 and the output shaft of the multi-axis gearbox 12. This setting makes the multi-axis gearbox 12 that drives the cutter 24 to rotate. The output shaft does not need to be facing the tool 24. When the second transmission rod 55 is inclined, the output shaft of the multi-axis gearbox 12 that can be connected with the first universal joint 33 can be used to drive the tool 24 to rotate, not only increasing the speed. The scope of application is widened, and when the number of tools 24 is large, the output shaft of the multi-axis gearbox 12 that is not facing the tool 24 can be used to drive the tool 24 to rotate, thereby avoiding interference to a certain extent.

Preferably, the drive assembly includes a second servo motor (not shown in the figure); the output shaft of the second servo motor is fixedly sleeved with a second driving synchronizing wheel; the input shaft 32 of the multi-shaft gearbox 12 is fixedly sleeved with a second driving synchronizing wheel. The second driven synchronous wheel 31 is matched with the two driving synchronous wheels; the second driving synchronous wheel and the second driven synchronous wheel 31 are connected by a second synchronous belt (not shown in the figure).

When it is necessary to drive the cutter 24 to rotate, the second servo motor is used to drive the second driving synchronous wheel to rotate, the second driving synchronous wheel drives the second driven synchronous wheel 31 to rotate through the second synchronous belt, and the second driven synchronous wheel 31 drives the multi-axis When the input shaft 32 of the gear box 12 rotates, the multiple output shafts of the multi-shaft gear box 12 rotate simultaneously, and the multiple cutters 24 rotate simultaneously under the driving of the multiple transmission assemblies 56 .

Embodiment 2

As shown in Figure 5, the second embodiment is basically the same as the first embodiment, the similarities will not be repeated, and the differences are:

It also includes a cylinder 58 that drives the pressure plate mounting frame 4 to move longitudinally; the movable end of the cylinder 58 is fixedly connected with the pressure plate mounting frame 4; the fixture mounting frame 9 is also fixed with two vertical plates 60; On both sides of the jig 7; a plurality of transverse elastic pieces 59 are fixed on the side of the vertical plate 60 facing the jig 7.

During processing, the pressure plate mounting frame 4 is first driven by the cylinder 58 to move down, so that the pressure plate 6 moves down quickly to the vicinity of the workpiece 10, and then the first servo motor 21 operates. After moving and contacting the workpiece 10, the pressing plate 6 will slowly push the workpiece 10 and the jig 7 downward, so as to realize the feeding. After the processing is completed, the first servo motor 21 runs, the pressing plate 6 moves up slowly, and the jig 7 is in The pressure plate 6 and the spring 8 move up slowly. When the tool 24 is completely released from the hole to be processed, the air cylinder 58 drives the pressure plate mounting frame 4 to rise rapidly, the pressure plate 6 is reset, and the setting of the air cylinder 58 improves the moving speed of the pressure plate 6. , thereby improving the work efficiency; in the process that the air cylinder 58 drives the pressure plate mounting frame 4 to rise rapidly, the pressure plate 6 is instantly separated from the workpiece 10, and the fixture 7 continues to rise under the action of the spring 8. During this process, the fixture 7 will Constantly colliding with the shrapnel 59, the workpiece 10 on the jig 7 is vibrated, and the debris remaining in the hole to be processed on the workpiece 10 will fall out due to the vibration. The setting of the shrapnel 59 not only slows down the jig 7 The rising speed also plays a role in chip removal.

It should be noted that the height of the bottom shrapnel 59 should be higher than the height of the jig 7 at the moment when the tool 24 enters the hole to be machined, so as to prevent the workpiece 10 from being caused by the jig 7 contacting the shrapnel 59 during the machining process. Vibration, thereby avoiding damage to the tool 24 and poor machining.

The difference from the first embodiment is that a cylinder mounting frame 61 for mounting the cylinder 58 is also included, and the cylinder mounting frame 61 is fixed on the fixture mounting frame 9 .

It should be understood that, for those skilled in the art, improvements or changes can be made according to the above description, and all these improvements and changes should fall within the protection scope of the appended claims of the present invention.

Claims (10)

1. A single-station servo tapping chamfering machine is characterized by comprising a jig for loading a workpiece; the workpiece is arranged above the jig; a plurality of cutters are arranged below the jig corresponding to the holes to be machined of the workpiece; the plurality of cutters correspond to the plurality of holes to be machined one by one; the cutter is a chamfering drill bit or a screw tap; the jig is provided with a through hole for the cutter to pass through; the tool longitudinal moving device comprises a plurality of tool longitudinal moving assemblies, a plurality of tool longitudinal moving assemblies and a plurality of tool clamping devices, wherein the tool longitudinal moving assemblies are used for driving the tool to move longitudinally; the plurality of chucks correspond to the plurality of cutters one to one.

2. The single-station servo tapping and chamfering machine according to claim 1, further comprising a jig mounting frame for mounting the jig; the jig is arranged on the jig mounting frame in a sliding manner; the jig longitudinal moving assembly comprises a pressing plate arranged above the workpiece, a pressing plate longitudinal moving assembly used for driving the pressing plate to longitudinally move and a resetting piece used for resetting the jig.

3. The single-station servo tapping and chamfering machine according to claim 2, wherein the jig is fixedly provided with a first guide rod; the jig mounting frame is fixedly provided with a first linear bearing matched with the first guide rod; the first guide rod is arranged in the first linear bearing in a penetrating way; the reset piece is a spring; the spring is sleeved outside the first guide rod; one end of the spring is pressed against the jig mounting frame, and the other end of the spring is pressed against the jig.

4. The single-station servo tapping and chamfering machine according to claim 2, further comprising a platen mounting bracket for mounting the platen longitudinal movement assembly; the pressing plate longitudinal moving assembly comprises a screw rod, a screw rod nut matched with the screw rod and a screw rod nut rotating assembly driving the screw rod nut to rotate; one end of the screw rod is fixedly connected with the pressing plate; the screw rod nut is rotatably arranged on the pressing plate mounting frame.

5. The single-station servo tapping and chamfering machine according to claim 4, wherein the feed screw nut rotating assembly comprises a first servo motor and a transmission sleeve; a first driving synchronous wheel is fixedly sleeved on an output shaft of the first servo motor; a first driven synchronizing wheel matched with the first driving synchronizing wheel is fixedly sleeved outside the transmission sleeve; the first driven synchronizing wheel is connected with the first driving synchronizing wheel through a first synchronizing belt; the transmission sleeve is sleeved outside the screw rod nut and fixedly connected with the screw rod nut; the pressing plate mounting frame is fixedly provided with a mounting sleeve matched with the transmission sleeve; the transmission sleeve penetrates through the installation sleeve and is rotatably connected with the installation sleeve.

6. The single-station servo tapping and chamfering machine according to claim 4, wherein a second guide rod is fixedly arranged on the pressure plate; the pressing plate mounting frame is fixedly provided with a second linear bearing matched with the second guide rod; the second guide rod penetrates through the second linear bearing.

7. The single station servo tapping and chamfering machine according to claim 2, wherein the collet rotating assembly includes a multi-axis gearbox; the multi-shaft gear box is provided with an input shaft and a plurality of output shafts; the chuck rotating assembly also comprises a driving assembly for driving the input shaft of the multi-shaft gearbox to rotate, and a plurality of transmission assemblies; the transmission assemblies correspond to the chucks one by one; an output shaft of the multi-shaft gear box drives the chuck to rotate through the transmission assembly; the transmission assembly is rotatably connected with the jig mounting frame.

8. The single-station servo tapping and chamfering machine according to claim 7, wherein the transmission assembly comprises a first transmission rod and a second transmission rod; the first transmission rod is connected with an output shaft of the multi-shaft gearbox through the second transmission rod; the chuck is fixedly arranged at one end of the first transmission rod, which is far away from the second transmission rod; the first transmission rod is rotatably connected with the jig mounting frame.

9. The single-station servo tapping and chamfering machine according to claim 8, wherein the second transmission rod comprises an inner rod and an outer rod; the end face of one end of the outer rod is provided with a movable groove matched with the inner rod, and the other end of the outer rod is connected with an output shaft of the multi-shaft gear box through a first universal joint; the cross section of the movable groove is polygonal; the cross section of the inner rod is polygonal; one end of the inner rod is arranged in the movable groove, and the other end of the inner rod is connected with the first transmission rod through a second universal joint.

10. The single-station servo tapping and chamfering machine according to claim 7, wherein the driving assembly includes a second servo motor; a second driving synchronous wheel is fixedly sleeved on an output shaft of the second servo motor; a second driven synchronizing wheel matched with the second driving synchronizing wheel is fixedly sleeved on an input shaft of the multi-shaft gear box; the second driving synchronous wheel is connected with the second driven synchronous wheel through a second synchronous belt.

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