CN211249104U - Turning and grinding combined machine tool suitable for medium and small disc gears - Google Patents

Abstract

The utility model provides a turning and grinding compound machine tool suitable for medium and small disc gears, which can solve the technical problems of high cost of preparing a feeding manipulator, low feeding efficiency, and the machining accuracy of the compound machine tool needs to be improved. A turning-grinding compound machine tool suitable for medium and small disc gears, comprising a bed, a workpiece spindle, an external cylindrical grinding mechanism, an internal cylindrical grinding mechanism and a turret mechanism, characterized in that the workpiece spindle is erected and the lower end is mounted with a Fixture, the workpiece spindle is installed on the spindle seat and driven by the X-axis feeding mechanism, the spindle seat is installed on the upper part of the bed and driven by the Z-axis feeding mechanism, the turning-grinding compound machine tool also includes a feeding mechanism, a feeding mechanism, a cylindrical grinding mechanism, The internal grinding mechanism and the turret mechanism are sequentially installed on the front side of the bed along the X-axis direction and below the workpiece spindle. The utility model has the functions of the workpiece spindle and the fixture checking tool manipulator, which can reduce the cost and improve the feeding efficiency.

Description

A turning and grinding compound machine tool suitable for medium and small disc gears

technical field

The utility model relates to the field of machine tools, in particular to a turning and grinding compound machine tool suitable for medium and small disc gears.

Background technique

The turning and grinding of the inner, outer and end faces (two end faces) of medium and small disc gears traditionally need to be processed by grinding machines and lathes in batches, which not only has low processing efficiency, but also involves repeated clamping of workpieces. , the machining accuracy is difficult to meet the demand. To this end, the industry has developed a turning and grinding compound machine tool, but the existing turning and grinding compound machine tool needs to be equipped with a feeding manipulator to realize automatic feeding, which is not only expensive, but also has low feeding efficiency. At the same time, the improvement of machining accuracy is also Difficult to meet expectations.

Utility model content

The utility model provides a turning and grinding compound machine tool suitable for medium and small disc gears, which can solve the technical problems of high cost of preparing a feeding manipulator, low feeding efficiency, and the machining accuracy of the compound machine tool needs to be improved.

The technical solution is as follows, a turning-grinding compound machine tool suitable for medium and small disc gears, which comprises a bed, a workpiece spindle, an external cylindrical grinding mechanism, an internal cylindrical grinding mechanism and a turret mechanism, and is characterized in that: The workpiece spindle is erected and a fixture is installed at the lower end. The workpiece spindle is installed on the spindle base and driven by the X-axis feed mechanism. The compound machine tool also includes a feeding mechanism, and the feeding mechanism, the cylindrical grinding mechanism, the internal grinding mechanism and the turret mechanism are sequentially installed on the front side of the machine bed and located on the workpiece along the X-axis direction. below the spindle.

Further, the Z-axis feeding mechanism includes a support plate, a Z-axis slide rail pair, a Z-axis ball screw nut pair and a Z-axis servo motor, the workpiece spindle is mounted on the support plate, and the support plate slides through the Z-axis. The rail pair is guided and matched with the main shaft seat, and is driven and matched with the Z-axis servo motor through the Z-axis ball screw nut pair;

The X-axis feeding mechanism includes a sliding table, an X-axis sliding rail pair, an X-axis ball screw nut pair, and an X-axis servo motor. The spindle seat is fixed on the sliding table, and the sliding table is connected to the sliding table through the X-axis rail pair. The bed is guided and matched with the X-axis servo motor through the X-axis ball screw nut pair.

Further, the turning-grinding compound machine tool further includes a grinding wheel dresser, and the grinding wheel dresser is installed at the lower part of the spindle seat.

Further, the clamp includes a film clamp and a pitch circle positioning mechanism, and the pitch circle positioning mechanism includes a positioning rod that cooperates with each claw of the film clamp one by one; one type of claw and positioning rod It is used in conjunction with various types of helical gears to be processed, the jaws are provided with a through hole, one end of the positioning rod is provided with a pitch circle positioning portion and faces the helical gear to be processed, and the other end extends into the through hole and is connected elastically The elastic piece acts on the positioning rod elastically to prevent the positioning rod from escaping from the through hole, the adjusting screw is threadedly connected with the through hole and pushes the other end of the positioning rod, and the side wall of the positioning rod is provided with a lengthwise The guide groove is set in the direction, the guide screw is threadedly connected with the claw seat and extends into the guide groove, the adjusting screw is installed with a steel ball, and the other end of the positioning rod is pressed against the steel ball, and the end surface of each claw is A guide plate is installed, a guide pin is installed on the guide plate, and the end portion of the guide pin is provided with a ball head guide portion matched with the tooth groove of the helical gear.

Further, the film clamp includes a casing, a diaphragm, a claw, a claw seat, a balance block and a drive unit, a diaphragm is installed at one end of the cavity opening of the casing, and the claw is installed on the claw seat. , the jaw seat and the balance block correspond one-to-one and are positioned and clamped on both sides of the diaphragm.

Further, the claws are provided with three and are evenly distributed on the diaphragm.

Further, the elastic member is a butterfly spring, the butterfly spring is sleeved on the other end of the positioning rod, the upper end of the butterfly spring is abutted against the stepped surface of the positioning rod, and the lower end is abutted and fixed. on the limiter of the positioning rod.

Further, the limiting member is a circlip, and the circlip is installed in the circlip groove at the other end of the positioning rod.

Further, the positioning rod is installed with a washer matched with the through hole.

Further, the end surface of the claw seat is provided with a step, the side surface of the claw and the side surface of the step are arc surfaces and fit each other, the bottom surface of the claw and the end surface of the claw seat are Locating the fit by the locating pin.

The workpiece spindle of the utility model is erected and moved in coordination with the X-axis driving mechanism and the Z-axis driving mechanism, so that the gears placed on the feeding mechanism can be clamped, so that no additional manipulator is required, and the cost can be reduced, and the gears are clamped. The process only involves the linear movement of the X-axis and Z-axis and the opening and closing of the fixture. The action is simple and the path is short, which can effectively improve the feeding efficiency; in addition, the cylindrical grinding mechanism, the internal grinding mechanism and the turret mechanism are linearly arranged in the On the front side of the bed, cooling water, cutting fluid, etc. can flow away quickly without passing through the bed, reducing the temperature rise of the machine tool and avoiding the occurrence of uneven temperature distribution of the machine tool, improving the thermal stability of the machine tool, and thus improving the machining accuracy.

Description of drawings

FIG. 1 is a front view of a turning-grinding compound machine tool of the present invention.

FIG. 2 is a top view of the turning-grinding compound machine tool of the present invention.

FIG. 3 is a schematic top view of the structure of the clamp of the present invention.

FIG. 4 is a schematic structural diagram of the enlarged part of A in FIG. 3 .

FIG. 5 is a schematic diagram of the cross-sectional structure in the direction B-B in FIG. 3 .

FIG. 6 is a partial enlarged schematic view of the positioning rod installation structure in FIG. 5 .

Detailed ways

As shown in Figures 1 to 6, a compound turning and grinding machine tool suitable for medium and small disc gears includes a machine bed 1, a workpiece spindle 2, a feeding mechanism 4, an external cylindrical grinding mechanism 5, and an internal cylindrical grinding mechanism 6 , a turret mechanism 7 and a grinding wheel dresser 13, the workpiece spindle 2 is an upright electric spindle and a fixture 3 is installed at the lower end, and the workpiece spindle 2 is installed on the spindle base 14 and is driven by the X-axis feed mechanism along the X-axis direction (ie Fig. 1 left and right direction), the spindle seat 14 is installed on the upper part of the bed 1 and is driven by the Z-axis feeding mechanism along the Z-axis direction (that is, the up and down direction in Figure 1), the feeding mechanism 4, the cylindrical grinding mechanism 5, and the internal cylindrical grinding mechanism 6 The turret mechanism 7 and the turret mechanism 7 are sequentially installed on the front side of the bed 1 along the X-axis direction and are located below the workpiece spindle 2 , and the grinding wheel dresser 13 is installed under the spindle seat 14 .

The Z-axis feed mechanism includes a support plate, a Z-axis slide rail pair, a Z-axis ball screw nut pair and a Z-axis servo motor 12. The workpiece spindle 2 is mounted on the support plate, and the support plate is guided by the Z-axis slide rail pair and the spindle seat 14. It is matched with the Z-axis ball screw nut pair and the Z-axis servo motor 12 is driven and matched; the X-axis feed mechanism includes the slide table 8, the X-axis slide rail pair 9, the X-axis ball screw nut pair 11 and the X-axis servo motor 10 , the main shaft seat 14 is fixed on the sliding table 8, the sliding table 8 is guided and matched with the bed 1 through the X-axis guide rail pair 9, and is driven and matched with the X-axis servo motor 10 through the X-axis ball screw nut pair 11. The X-axis slide rail pair A pair of sliding rails are fixed on the top of the bed, the sliding block is fixed on the bottom of the sliding table, the ball screw of the X-axis ball screw nut pair is connected with the rotating shaft of the X-axis servo motor, and is rotatably supported by the screw support. On the top of the bed, the screw nut is fixed on the bottom of the sliding table.

Among them, the feeding mechanism 4, the cylindrical grinding mechanism 5, the internal grinding mechanism 6, the turret mechanism 7 and the grinding wheel dresser are all existing conventional technologies, and the present invention does not involve the structural improvement of the above-mentioned mechanisms.

The clamp includes a film clamp and a pitch circle positioning mechanism. The pitch circle positioning mechanism includes a positioning rod 306 that cooperates with the three claws of the film clamp one by one. The helical gear is used together; the jaw 303 is provided with a through hole, one end 306a of the positioning rod is provided with a pitch circle positioning part and faces the helical gear to be processed, and the other end 306b extends into the through hole and is connected with an elastic member 308, and the elastic member 308 is positioned The rod 306 acts elastically to prevent the positioning rod 306 from detaching from the through hole. The adjusting screw 307 is threadedly connected with the through hole and pushes against the other end 306b of the positioning rod. (not shown, 311 in the figure is the installation hole of the guide screw) is threadedly connected with the claw seat 304 and extends into the guide groove 306c, the protrusion of the pitch circle positioning part is adjusted by rotating the adjusting screw, and the guide groove is matched with the guide screw For moving and guiding, it can be fine-tuned according to the pitch circle beat of the actual processing part to achieve the best effect; the end face of each jaw 303 is installed with a guide plate 312, and a guide pin is installed on the guide plate 312, and the end of the guide pin is provided with The ball head guide portion 313a, which is matched with the tooth groove of the helical gear, installs and guides the helical gear through the ball head guide portion 313a of the three guide pins, so that the pitch circle positioning portion of the positioning rod smoothly enters the tooth groove and aligns with the pitch circle of the helical gear. Positioning: The steel ball 310 is installed on the adjusting screw 307 and the other end 306b of the positioning rod is pressed against the steel ball, and the torsion force on the positioning rod is reduced by the steel ball when the adjusting bolt rotates forward to fine-tune the positioning rod.

The film clamp includes a housing 301 , a diaphragm 302 , a jaw 303 , a jaw seat 304 , a balance weight 305 and a driving unit, the driving unit is an oil cylinder or an air cylinder (not shown), and the piston rod of the driving unit extends into the housing 301 after the It is fixedly connected to the diaphragm, the casing 301 is fixedly connected to the workpiece spindle, the diaphragm 302 is installed at the opening end of the cavity of the casing 301, the claw 303 is installed on the claw seat 304, and the claw seat 304 corresponds to the balance block 305 one-to-one It is positioned and clamped on both sides of the diaphragm 302. The end face of the claw seat 304 is provided with a step 304a. The end surface of the seat 304 is positioned and matched by a positioning pin (not shown), and the two-way positioning and matching of the arc surface and the positioning pin are used to realize the rapid assembly of the claws. The elastic member 309 is a butterfly spring, and the butterfly spring is sleeved on the positioning rod. The other end 306b of the butterfly spring, the upper end of the butterfly spring abuts the stepped surface of the positioning rod, and the lower end abuts the limiting member 309 fixed to the positioning rod; the limiting member 309 is a circlip, and the circlip is installed on the other end 306b of the positioning rod in the circlip groove.

In the figure, 314 is a helical gear, 314a is a gear groove, and 36d is a groove for installing a washer.

Claims (8)

1. The utility model provides a car grinds compound lathe suitable for well, small-size dish class gear, it includes the lathe bed, and work piece main shaft, cylindrical grinding mechanism, interior cylindrical grinding mechanism and turret mechanism, its characterized in that: the turning and grinding combined machine tool comprises a lathe bed, a workpiece main shaft, a main shaft seat, a turning and grinding combined machine tool and a feeding mechanism, wherein the workpiece main shaft is vertically arranged, a clamp is arranged at the lower end of the workpiece main shaft, the workpiece main shaft is arranged on the main shaft seat and is driven by an X-axis feeding mechanism, the main shaft seat is arranged on the upper portion of the lathe bed and is driven by a Z-axis feeding mechanism, the turning and grinding combined machine tool further comprises the feeding mechanism, and the feeding mechanism, the outer circle grinding mechanism, the inner circle grinding mechanism and the turret.

2. The turning and grinding compound machine tool suitable for the medium and small disc-like gears is characterized by comprising the following components in parts by weight: the Z-axis feeding mechanism comprises a supporting plate, a Z-axis slide rail pair, a Z-axis ball screw nut pair and a Z-axis servo motor, the workpiece spindle is arranged on the supporting plate, and the supporting plate is in guiding fit with the spindle seat through the Z-axis slide rail pair and is in transmission fit with the Z-axis servo motor through the Z-axis ball screw nut pair;

the X-axis feeding mechanism comprises a sliding table, an X-axis sliding rail pair, an X-axis ball screw nut pair and an X-axis servo motor, the spindle seat is fixed on the sliding table, and the sliding table is in guiding fit with the lathe bed through the X-axis guide rail pair and is in transmission fit with the X-axis servo motor through the X-axis ball screw nut pair.

3. The turning and grinding compound machine tool suitable for the medium and small disc-like gears is characterized in that: the turning and grinding combined machine tool further comprises a grinding wheel dresser, and the grinding wheel dresser is mounted on the lower portion of the spindle seat.

4. The turning and grinding compound machine tool suitable for the medium and small disc-like gears is characterized by comprising the following components in parts by weight: the fixture comprises a film fixture and a pitch circle positioning mechanism, wherein the pitch circle positioning mechanism comprises positioning rods which are matched with the clamping jaws of the film fixture one by one; the clamping jaw and the positioning rod of one type are independently matched with a helical gear to be processed of one type for use, the clamping jaw is provided with a through hole, one end of the positioning rod is provided with a pitch circle positioning part and faces the bevel gear to be processed, the other end of the positioning rod extends into the through hole and is connected with an elastic part, the elastic piece elastically acts on the positioning rod to prevent the positioning rod from being separated from the through hole, the adjusting screw is in threaded connection with the through hole and tightly props against the other end of the positioning rod, the side wall of the positioning rod is provided with a guide groove arranged along the length direction, a guide screw is in threaded connection with the jaw seat and extends into the guide groove, the adjusting screw is provided with a steel ball and tightly pushes the other end of the positioning rod through the steel ball, the end surface of each clamping jaw is provided with a guide plate, and a guide pin is arranged on the guide plate, and a ball head guide part matched with the tooth groove of the helical gear is arranged at the end part of the guide pin.

5. The turning and grinding compound machine tool suitable for the medium and small disc-like gears is characterized in that: the film clamp comprises a shell, a diaphragm, a clamping jaw seat, a balance block and a driving unit, wherein the diaphragm is installed at one end of an opening of a cavity of the shell, the clamping jaw is installed on the clamping jaw seat, and the clamping jaw seat corresponds to the balance block one to one and is positioned and clamped on two sides of the diaphragm.

6. The turning and grinding compound machine tool suitable for the medium and small disc-like gears is characterized in that: the elastic piece is a butterfly spring, the butterfly spring is sleeved at the other end of the positioning rod, the upper end of the butterfly spring abuts against the step surface of the positioning rod, and the lower end of the butterfly spring abuts against a limiting piece fixedly connected to the positioning rod.

7. The turning and grinding compound machine tool suitable for the medium and small disc-like gears is characterized in that: the limiting part is a clamp spring, and the clamp spring is installed in a clamp spring groove at the other end of the positioning rod.

8. The turning and grinding compound machine tool suitable for the medium and small disc-like gears is characterized in that: the end face of the claw seat is provided with a step, the side face of the claw and the side face of the step are arc-shaped faces and are attached to each other, and the bottom face of the claw and the end face of the claw seat are in positioning fit through a positioning pin.

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