CN207189259U - A spindle fixture for automatic tool change - Google Patents

Abstract

The utility model relates to a digit control machine tool equips technical field, in particular to automatic tool changing spindle attachment. The cylinder is arranged at the upper end of the cylinder seat, and the synchronous wheel is rotatably arranged in the cylinder seat; the bearing seat is mounted at the lower end of the cylinder seat; the bearing is arranged in the bearing seat; the spring is arranged on the pull rod in a penetrating mode, the nut is arranged at the top end of the pull rod and connected with the cylinder, the nut is pressed at the top end of the spring, and the cylinder seat is pressed at the bottom end of the spring; the taper spindle penetrates through the bearing and is connected with the synchronous wheel; the bottom end of the pull rod is provided with the ball; the ball is positioned in the taper main shaft; the top end of the tool bit is positioned in the taper spindle and is connected with the ball. An object of the utility model is to provide an automatic tool changing main shaft anchor clamps to it is slow to solve current digit control machine tool changing speed, problem that the automation level is low.

Description

A spindle fixture for automatic tool change

technical field

The utility model relates to the technical field of numerical control machine tool equipment, in particular to an automatic tool changing spindle clamp.

Background technique

CNC machine tools are frequently used in mechanical processing. The tool on the machine tool is an important part of the operation. Because of the frequent processing of hard metal products, the tool wears quickly, and the tool with a large amount of wear will cause the dimensional deviation of the workpiece during use. Therefore, it is necessary to Change often. Existing tools are often replaced manually, and the tool is removed from the threaded handle. This replacement method is labor-intensive and inconvenient to operate; It is often tightened between them, which increases the inconvenience of manual disassembly.

At the same time, in the mechanical processing of CNC machine tools, due to the complex structure of the processed products, it needs to use a variety of cutting tools to complete the processing. Quick and automatic tool replacement has an important impact on the processing efficiency of CNC machine tools.

Utility model content

The purpose of the utility model is to provide an automatic tool-changing spindle fixture to solve the problems of slow tool-changing speed and low automation level of existing numerical control machine tools.

The purpose of this utility model is achieved by the following technical solutions:

A spindle fixture for automatic tool changer, which includes a cylinder, a cylinder base, a synchronous wheel, a nut, a spring, a pull rod, a ball, a bearing seat, a bearing, a tapered spindle and a clamping head; the cylinder is installed on the upper end of the cylinder base, and the The synchronous wheel is rotatably installed in the cylinder block; the bearing seat is installed at the lower end of the cylinder block; the bearing is installed in the bearing seat; the pull rod wears the spring, and the top end of the pull rod is installed The nut, the nut is connected to the cylinder, the top end of the spring presses the nut, and the bottom end of the spring presses the cylinder seat; the tapered main shaft wears the bearing and is connected with the synchronous wheel The pull rod wears the tapered main shaft, and the ball is installed at the bottom end of the pull rod; the ball is located in the tapered main shaft; the top of the clamping head is located in the tapered main shaft and connected with the ball .

Further, the degree of taper of the taper main shaft is 7:24.

Further, the bearing is a rolling bearing.

Further, there are more than two bearings.

Further, more than two bearings are evenly arranged along the length direction of the bearing seat.

Further, it also includes a bearing cover, the bearing cover is located between the bearing seat and the tapered main shaft, and the bearing cover is connected with the bearing seat.

Further, there is an interference fit between the bearing and the bearing housing.

Further, there is an interference fit between the tapered main shaft and the bearing.

Further, the taper main shaft is connected to the synchronous wheel through a spline.

Further, the synchronous wheel is driven to rotate by a motor.

Compared with the prior art, the utility model has the following advantages:

1. A kind of automatic tool changer spindle fixture described in the utility model, it comprises cylinder, cylinder seat, synchronous wheel, nut, spring, pull rod, ball, bearing seat, bearing, taper spindle and clamping tool head; Described cylinder is installed on The upper end of the cylinder block, the synchronous wheel is rotatably installed in the cylinder block; the lower end of the cylinder block is installed with the bearing seat; the bearing is installed in the bearing seat; the pull rod wears the Spring, the nut is installed on the top of the pull rod, the nut is connected to the cylinder, the top of the spring presses the nut, and the bottom of the spring presses the cylinder seat; the tapered main shaft wears the bearing And connected with the synchronous wheel; the pull rod wears the tapered main shaft, and the ball is installed at the bottom end of the pull rod; the ball is located in the tapered main shaft; the top of the clamping head is located in the tapered main shaft , and connected with the ball; through the tension of the spring, the pull rod is lifted, and then the ball clamps the clamping head; the synchronous wheel drives the taper spindle to rotate, and the taper spindle drives the clamping head to rotate; when the tool needs to be changed, the cylinder moves the pull rod to the Press down to make the space of the ball larger, and the clamping head falls off. After the new clamping head enters the taper spindle, the cylinder is released, and the pull rod is lifted by the tension of the spring, and then the ball clamps the clamping head to realize tool change.

2. The taper main shaft of the utility model is connected with the synchronous wheel through a spline; because the spline connection directly and evenly produces more teeth and grooves on the shaft and the hub hole, the coupling force is relatively uniform; The number of teeth is more, the total contact area is larger, so it can bear a larger load; the parts on the shaft and the shaft have good alignment, which is very important for high-speed and precision machines.

Description of drawings

Fig. 1 is the structural diagram (exploded view) of the automatic tool changer spindle fixture described in the utility model;

In the figure: 101-cylinder, 102-cylinder block, 103-synchronous wheel, 104-nut, 105-spring, 106-pull rod, 107-ball, 108-bearing seat, 109-bearing, 110-bearing gland, 111- Tapered spindle, 112-clamp head.

Detailed ways

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

Referring to Fig. 1, a spindle clamp for automatic tool change, which includes a cylinder 101, a cylinder block 102, a synchronous wheel 103, a nut 104, a spring 105, a pull rod 106, a ball 107, a bearing seat 108, a bearing 109, a tapered spindle 111 and a clamping tool Head 112; cylinder 101 is installed on the upper end of cylinder block 102, synchronous wheel 103 is rotatably installed in cylinder block 102; bearing seat 108 is installed on the lower end of cylinder block 102; bearing 109 is installed in bearing block 108; pull rod 106 wears spring 105, The nut 104 is installed on the top of the pull rod 106, the nut 104 is connected to the cylinder 101, the top of the spring 105 presses the nut 104, and the bottom of the spring 105 presses the cylinder seat 102; the taper main shaft 111 wears the bearing 109 and connects with the synchronous wheel 103; Main shaft 111, ball 107 is installed at the bottom of pull rod 106; Ball 107 is located in the tapered main shaft 111; The top of clamping head 112 is located in the tapered main shaft 111, and is connected with the ball 107; The degree of taper of the tapered main shaft 111 is 7:24; tension, lift the pull rod 106, and then the ball 107 clamps the clamping head 112; the clamping head 112 clamps the tool; the synchronous wheel 103 is driven by the motor to rotate, the synchronous wheel 103 drives the taper spindle 111 to rotate, and the taper spindle 111 drives the clamping head 112 rotation; when needing to change tool, cylinder 101 presses pull rod 106 downwards, makes the space of ball 107 become bigger, clamping cutter head 112 falls off, after new clamping cutter head 112 enters taper main shaft 111, unclamps cylinder 101, passes The tension of the spring 104 lifts the pull rod 106, and then the ball 107 clamps the clamping head 112 to realize automatic tool change.

Referring to Fig. 1, the bearing 109 is a rolling bearing; the rolling bearing has small frictional resistance, low power consumption, high mechanical efficiency, and is easy to start; the size is standardized, interchangeable, easy to install and disassemble, and easy to maintain; high precision, large load, small wear, and easy to use long life.

Referring to Fig. 1, there are more than two bearings 109; more than two bearings 109 are evenly arranged along the length direction of the bearing seat 108; to prevent the taper main shaft 111 from generating large vibrations when rotating, and to improve the rotation stability of the taper main shaft 111.

Referring to Fig. 1, the utility model also includes a bearing gland 110, the bearing gland 110 is located between the bearing seat 108 and the taper main shaft 111, the bearing gland 110 is connected with the bearing seat 108; the bearing gland 110 can prevent the bearing 109 from falling off, causing Equipment failure, at the same time, prevent the debris generated during iron cutting from entering the bearing seat 108, affecting the working state of the bearing 109.

Referring to Fig. 1, there is an interference fit between the bearing 109 and the bearing seat 108; the interference fit has a simple structure, good coaxiality, and can withstand relatively large axial force, torque and dynamic load.

Referring to FIG. 1 , there is an interference fit between the tapered main shaft 111 and the bearing 109 ; the interference fit has a simple structure, good coaxiality, and can bear relatively large axial force, torque and dynamic load.

Referring to Fig. 1, the taper main shaft 111 and the synchronous wheel 103 are connected by a spline; the spline connection is directly and evenly made more teeth and grooves on the shaft and the hub hole, so the coupling force is relatively uniform; the number of teeth is large , the total contact area is large, so it can withstand a large load; the parts on the shaft and the shaft have good alignment, which is very important for high-speed and precision machines.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the various embodiments of the present invention Scope of technical solutions.

Claims (10)

1. A kind of 1. automatic tool changer main shaft fixture, it is characterised in that：Including cylinder, cylinder seat, synchronizing wheel, nut, spring, pull bar, Ball, bearing block, bearing, taper main shaft and folder cutter head；The cylinder is arranged on the cylinder seat upper end, and the synchronizing wheel can revolve What is turned is arranged in the cylinder seat；The cylinder seat lower end is installed by the bearing block；The bearing is arranged on the bearing block It is interior；The pull bar installs the spring, and the nut is installed on the pull bar top, and the nut connects the cylinder, the bullet Spring top compresses the nut, and the spring bottom end compresses the cylinder seat；The taper main shaft install the bearing and with institute State synchronizing wheel connection；The pull bar installs the taper main shaft, and the ball is installed in the pull bar bottom；The ball is located at institute State in taper main shaft；The folder bit tip is located in the taper main shaft, and is connected with the ball.
2. 2. automatic tool changer main shaft fixture according to claim 1, it is characterised in that：The taper number of degrees of the taper main shaft are 7：24.
3. 3. automatic tool changer main shaft fixture according to claim 1 or 2, it is characterised in that：The bearing is rolling bearing.
4. 4. automatic tool changer main shaft fixture according to claim 3, it is characterised in that：The bearing has two or more.
5. 5. automatic tool changer main shaft fixture according to claim 4, it is characterised in that：Bearing described in two or more is along the axle Bearing length direction is evenly arranged.
6. 6. automatic tool changer main shaft fixture according to claim 1 or 2, it is characterised in that：Also include bearing gland, the axle Between the bearing block and the taper main shaft, the bearing gland is connected pressure cap with the bearing block.
7. 7. automatic tool changer main shaft fixture according to claim 1 or 2, it is characterised in that：The bearing and the bearing block Between be interference fitted.
8. 8. automatic tool changer main shaft fixture according to claim 1 or 2, it is characterised in that：The taper main shaft and the axle It is interference fitted between holding.
9. 9. automatic tool changer main shaft fixture according to claim 1 or 2, it is characterised in that：The taper main shaft with it is described same Step wheel is connected by spline.
10. 10. automatic tool changer main shaft fixture according to claim 1 or 2, it is characterised in that：The synchronizing wheel is driven by motor Rotation.