CN206169828U - Four -axis linkage screw rod burnishing machine - Google Patents

Abstract

The utility model is a four-axis linkage screw polishing machine, which includes a bed, a mobile grinding unit and a screw support frame. A support guide rail is arranged on the upper surface of the bed, and the screw support frame is slidably arranged on the support guide rail. There is a track connecting the grinding unit. The screw and the drive motor set on the bed drive the grinding unit to slide back and forth on the track along the longitudinal direction of the bed; the mobile grinding unit includes a support frame and a grinding head, and the support frame is connected to the bed rail. , the support frame is provided with a drive device for driving the horizontal rotation of the grinding head and a lifting drive device, the spindle unit is provided with a chuck and a stepping drive motor that drives the chuck to move slightly; The device, the lifting drive device and the lead screw on one side of the bed and the drive motor form the four-axis linkage. The utility model can adjust the height, position and angle of the abrasive belt at any time during the polishing process of the screw rod, and improves the polishing quality and polishing efficiency of the screw rod.

Description

A four-axis linkage screw polishing machine

technical field

The utility model relates to the technical field of screw polishing processing equipment, in particular to a four-axis linkage screw polishing machine.

Background technique

The screw is a key transmission component in the machinery industry. The surface finish of the product directly determines the quality of the transmission. Based on the development requirements of modern industry, the shape of the screw tends to be diverse and complex. The current traditional manufacturing method in our country is manual grinding. This processing method is labor-intensive for operators, the production environment is harsh, and the product quality is difficult to guarantee. It is difficult to meet the development requirements of my country's machinery industry.

In the actual processing process, the shape of the screw rod is not uniform, and the angles of the thread on the screw rod are also different. It is difficult to completely polish all sides of the thread on the screw rod during the polishing process.

Contents of the invention

The purpose of the utility model is to provide a four-axis linkage screw polishing machine, which can adjust the height, position and angle of the abrasive belt during the screw polishing process, and improve the screw polishing quality and polishing efficiency. The purpose of this utility model is achieved through the following technical solutions.

A four-axis linkage screw polishing machine, including a bed, a mobile grinding unit and a screw support frame, a support guide rail is arranged on the upper surface of the bed, the screw support frame is slidably arranged on the support guide rail, and one end of the support guide rail is provided with a screw top screw Tailstock, the other end of the bracket guide rail is provided with a spindle unit, the spindle unit is used to block the screw to be polished; it is characterized in that: one side of the bed is provided with a track connecting the grinding unit, and the bed is provided with a The screw and the drive motor drive the grinding unit to slide back and forth on the track along the longitudinal direction of the bed; the mobile grinding unit includes a support frame and a grinding head, the support frame is connected to the bed rail, and a drive The grinding head horizontally rotates the driving device and the lifting driving device. The main shaft unit is provided with a chuck and a stepping drive motor that drives the chuck to move slightly.

Further, the driving device for driving the horizontal rotation of the grinding head includes a rotating motor arranged on the support frame, the rotating motor drives a turntable to rotate through a worm gear, and the turntable is encased in a lifting screw, and the turntable is Lifting guide posts are respectively arranged on both sides of the lifting screw, and a guide sleeve is set on the lifting guide post, and the grinding head is fixedly connected with the guide sleeve; the lifting drive device includes the lifting screw, and the support frame is provided with The lifting motor that drives the grinding head to move vertically up and down. The lifting motor is connected to the lifting screw. The grinding head is threadedly connected to the screw through the lifting sliding sleeve. The lifting motor drives the lifting sliding sleeve and the grinding unit to go up and down by driving the lifting screw to rotate The guide column moves up and down; the rotating motor drives the worm gear to drive the whole rotating lifting column and the grinding head to rotate horizontally.

Further, the track includes a support guide rail provided on the outwardly protruding edge of the bed base; the support guide rail is used for vertical support and horizontal sliding of the grinding unit, and the side wall of the bed above the support guide rail A horizontal positioning guide rail parallel to the supporting guide rail is arranged on the top, and the horizontal positioning guide rail is used for the horizontal positioning of the grinding unit; the horizontal positioning guide rail and the supporting guide rail form a sliding track for the grinding unit of the screw polishing machine; between the horizontal positioning guide rail and the A lead screw is arranged between the support guide rails to drive the grinding unit to move horizontally, and the lead screw is connected with the driving motor.

Further, the screw support frame includes a screw bracket, a height adjustment rod and a base; the middle part of the bottom end of the screw bracket is connected to the top of the height adjustment rod through a rotating shaft, and the screw bracket can use the top of the height adjustment rod as a fulcrum to the two sides. side rotation; the lower end of the height adjustment rod is connected to the base.

Further, the grinding head includes a grinding head drive support frame, and an abrasive belt motor, an abrasive belt driving wheel, an abrasive belt driven wheel and an abrasive belt are installed on the grinding head driving support frame, and the abrasive belt driving wheel and the abrasive belt motor Connection, the abrasive belt driving wheel and the abrasive belt driven wheel are connected through the abrasive belt.

Further, the rear end of the grinding head driving support frame is connected to the abrasive belt motor, the front end of the grinding head driving supporting frame is connected to the abrasive belt driven wheel, and the front end of the grinding head driving supporting frame is provided with a driven slider and a sliding Block guide post, the driven slider is connected with the abrasive belt driven wheel, and moves forward and backward along the slider guide post with the rotation of the abrasive belt driven wheel; the driven slider is also connected with an adjusting screw, and the end of the adjusting screw There is an adjustment wheel at the bottom, which is used to adjust the tightness of the abrasive belt.

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a schematic diagram of the front overall structure of the utility model;

Fig. 2 is a schematic diagram of the overall structure behind the utility model;

Fig. 3 is a schematic diagram of the structure of the mobile grinding unit;

Figure 4 is a schematic diagram of the structure of the screw support frame.

Reference signs:

1. Bed; 2. Mobile grinding unit; 3. Spindle unit; 4. Jackscrew tailstock; 5. Screw support frame; 6. Electrical control unit; 7. Operation panel.

detailed description

A four-axis linkage screw polishing machine, including a bed 1, a mobile grinding unit 2, and a screw support frame 5, on which the upper surface of the bed is provided with bracket guide rails 1-5, the screw support frame is slidably arranged on the bracket guide rail, and the bracket guide rail One end is provided with a screw top wire tailstock 4, and the other end of the bed of the bracket guide rail is provided with a spindle unit 3, and the spindle unit is used to block the polished screw; one side of the bed is provided with a track connecting the grinding unit. The screw 1-4 and the drive motor 1-3 provided on the bed drive the grinding unit to slide back and forth on the track along the longitudinal direction of the bed; the mobile grinding unit includes a support frame 2-1 and a grinding head 2-10, supporting The frame is connected with the bed track, and the support frame is provided with a drive device for driving the grinding head to rotate horizontally and a lift drive device, and the spindle unit is provided with a chuck 301 and a stepping drive motor 302 that drives the chuck to move slightly; The stepping driving motor of the unit, the grinding head horizontal rotation driving device and the lifting driving device, as well as the lead screw and the driving motor on one side of the bed form the four-axis linkage.

Wherein: the driving device for driving the horizontal rotation of the grinding head includes a rotating motor 2-4 arranged on the support frame 2-1, above the support frame is a rotating lifting column 2-3, and the rotating lifting column includes a turntable 2-41 , the rotating motor drives the turntable 2-41 to rotate through the worm gear and worm, and the turntable is encased in a lifting screw 2-32, and the lifting guide posts 2-33 are respectively arranged on the two sides of the lifting screw on the turntable, and the lifting guide The column is covered with a guide sleeve 2-31, and the grinding head is fixedly connected with the guide sleeve; the lifting drive device includes the lifting screw 2-32, and the support frame is provided with a lifting motor that drives the grinding head to move vertically up and down 2-2. The lifting motor is connected to the lifting screw. The grinding head is threadedly connected with the screw through the lifting sliding sleeve 2-34. The lifting motor drives the lifting sliding sleeve and the grinding unit to go up and down along the lifting guide column by driving the lifting screw to rotate. Movement: The rotating motor drives the worm gear to drive the whole rotating lifting column and the grinding head to rotate horizontally. Among them: a worm gear box 2-5 is set on the support frame, the worm gear is in the worm gear box 2-5, and the rotating motor 2-4 drives the rotating lifting column 2-3 as a whole and the grinding unit level by driving the worm gear turn.

The track includes a support guide rail 1-1 provided on the outwardly protruding edge of the base of the bed 1; the support guide rail is used for vertical support and horizontal sliding of the grinding unit, and the side of the bed above the support guide rail A horizontal positioning guide rail 1-2 parallel to the supporting guide rail is arranged on the wall, and the horizontal positioning guide rail is used for horizontal positioning of the grinding unit; the horizontal positioning guide rail and the supporting guide rail form the track for the sliding of the grinding unit of the screw polishing machine ; Between the horizontal positioning guide rail and the support guide rail, there is a driving grinding unit horizontally moving lead screw 1-4, which is connected to the drive motor 1-3; the drive motor drives the horizontal lead screw to rotate and drives the mobile grinding unit to move along the horizontal The guide rail moves horizontally and straightly.

The screw support frame includes a screw bracket 5-1, a height adjustment rod 5-2 and a base 5-3; the middle part of the bottom end of the screw bracket 5-1 is connected with the top of the height adjustment rod 5-2 by a rotating shaft, The bracket 5-1 can rotate to both sides with the top of the height adjustment rod 5-2 as a fulcrum; the lower end of the height adjustment rod 5-2 is connected to the base 5-3. The height adjusting rod 5-2 can adjust the height of the screw support frame. During the processing, the bracket can be adjusted to swing along the left and right sides of the rotating shaft according to the processing needs, so as to adjust the angle of the screw rod to achieve a better polishing effect. The height adjustment rod 5-2 is provided with a height adjustment nut and a lock nut; the base 5-3 includes a guide rail slide plate and a guide rail lock plate located below the guide rail slide plate.

Described grinding head comprises grinding head driving support frame 2-11, and abrasive belt motor 2-6, abrasive belt driving wheel 2-7, abrasive belt driven wheel 2-8 and abrasive belt 2-11 are installed on grinding head driving supporting frame. 9. The abrasive belt driving wheel 2-7 is connected with the abrasive belt motor 2-6, and the abrasive belt driving wheel 2-7 is connected with the abrasive belt driven wheel 2-8 through the abrasive belt 2-9. The abrasive belt motor is fixed at the rear end of the grinding head drive support frame, the abrasive belt driven wheel is fixed at the front end of the grinding head drive support frame, and the front end of the grinding head drive support frame is provided with a driven slider and a slider guide column 2- 12. The driven slider is connected with the abrasive belt driven wheel, and moves back and forth along the slider guide post with the rotation of the abrasive belt driven wheel; the driven slider is also connected with an adjusting screw, and the end of the adjusting screw is set Adjustment wheel 2-13 is arranged, is used for regulating the tightness of abrasive belt.

As control, the machine tool operation control unit of the polishing machine includes an electrical control unit 6 and an operation panel 7 . The electrical control unit and the operation panel are installed on the bed, and the electrical control unit 6 includes electrical components such as transformers, drive units for each axis, and I/O modules.

working principle:

Main cutting motion ----- rotation of abrasive belt wheel

1) A 100L motor with 3 kW and 2880 rpm is used to drive the driving wheel with a diameter of 200 mm and a width of 160 mm to drive the abrasive belt and the driven wheel.

2) Working principle of feed motion

The X-axis that moves up and down (lifting drive device) and the Z-axis that moves left and right (sliding drive device) are driven by servo motors for linear feed motion.

The C-axis (spindle) that drives the parts to rotate and the Y-axis (horizontal rotation drive device) that drives the swing angle of the abrasive belt are driven by a servo motor for circular feed motion.

3) Positioning, supporting and clamping of the workpiece

The parts to be processed are positioned and clamped by the manual three-jaw chuck of the spindle unit and the top of the tailstock, and supported by the intermediate screw support frame.

Claims (6)

1. A four-axis linkage screw polishing machine, including a bed, a mobile grinding unit and a screw support frame, a bracket guide rail is arranged on the upper surface of the bed, the screw support frame is slidably arranged on the bracket guide rail, and one end of the bracket guide rail is provided with a screw rod The top wire tailstock, the other end of the bracket guide rail is provided with a spindle unit, the spindle unit is used to block the screw to be polished; it is characterized in that: one side of the bed is provided with a track connecting the grinding unit, on the bed The screw and the drive motor installed on the body drive the grinding unit to slide back and forth on the track along the longitudinal direction of the bed; the mobile grinding unit includes a support frame and a grinding head, the support frame is connected with the bed rail, and the There is a drive device for driving the horizontal rotation of the grinding head and a lift drive device, and the main shaft unit is provided with a chuck and a stepping drive motor that drives the chuck to move slightly. 2. The polishing machine according to claim 1, characterized in that: the drive device for driving the horizontal rotation of the grinding head comprises a rotating motor arranged on the support frame, and the rotating motor drives a turntable to rotate through a worm and gear, so that The turntable encloses a lifting lead screw, and the turntable is provided with lifting guide columns on both sides of the lifting screw, and the lifting guide columns are covered with guide sleeves, and the grinding head is fixedly connected with the guide sleeves; the lifting drive device Including the lifting screw, the support frame is provided with a lifting motor that drives the grinding head to move vertically up and down. The lifting motor is connected to the lifting screw. The rotation of the rod drives the lifting sliding sleeve and the grinding unit to move up and down along the lifting guide column; the rotating motor drives the worm gear to drive the whole rotating lifting column and the grinding head to rotate horizontally. 3. The polishing machine according to claim 1, characterized in that: the track includes a support guide rail provided on the outwardly protruding edge of the bed base; the support guide rail is used for vertical support of the grinding unit and horizontal sliding, a horizontal positioning guide rail parallel to the supporting guide rail is provided on the side wall of the bed above the supporting guide rail, and the horizontal positioning guide rail is used for horizontal positioning of the grinding unit; the horizontal positioning guide rail and the supporting guide rail form a screw polishing machine The sliding track of the grinding unit; between the horizontal positioning guide rail and the support guide rail, there is a lead screw that drives the grinding unit to move horizontally, and the lead screw is connected with the drive motor. 4. The polishing machine according to claim 1, characterized in that: the screw support frame comprises a screw bracket, a height adjustment rod and a base; the middle part of the bottom end of the screw bracket is connected to the top of the height adjustment rod through a rotating shaft The screw bracket can rotate to both sides with the top of the height adjustment rod as a fulcrum; the lower end of the height adjustment rod is connected to the base. 5. The polishing machine according to claim 1, characterized in that: the grinding head comprises a grinding head driving support frame, and an abrasive belt motor, an abrasive belt driving wheel, an abrasive belt driven wheel and An abrasive belt, the abrasive belt driving wheel is connected with the abrasive belt motor, and the abrasive belt driving wheel is connected with the abrasive belt driven wheel through the abrasive belt. 6. The polishing machine according to claim 5, characterized in that: the rear end of the grinding head drive support frame is connected to the abrasive belt motor, the front end of the grinding head drive support frame is connected to the abrasive belt driven wheel, and the grinding head The front end of the driving support frame is provided with a driven slider and a slider guide column, and the driven slider is connected with the abrasive belt driven wheel, and moves forward and backward along the slider guide column with the rotation of the abrasive belt driven wheel; The slide block is also connected with an adjusting screw, and the end of the adjusting screw is provided with an adjustment wheel for adjusting the tightness of the abrasive belt.