CN108422044B - A floating deburring device - Google Patents

Abstract

The present invention provides a kind of floating burr removers, including unit outer cover protective cover mechanism, it is fixed on the flexible Strok mechanism of the inside bottom of the unit outer cover protective cover mechanism and the electro spindle fixed mechanism for installing cutter, it further include the floating motion mechanism being connect with flexible Strok mechanism front end, the front end of the floating motion mechanism is connect with the rear end of the electro spindle fixed mechanism, and the front end of the electro spindle fixed mechanism is stretched out from the front end of unit outer cover protective cover mechanism；The present invention is by being arranged flexible Strok mechanism and floating motion mechanism, cutter is allowed to generate a degree of radial floating in process, good burr removal effect can be reached by not needing explication boundary, it may be mounted on numerical control machining center or manipulator, to when handling irregular burr, it is not easy to damage cutter or workpiece.

Description

A floating deburring device

technical field

The invention belongs to the technical field of mechanical processing, and particularly relates to a floating deburring device.

Background technique

Most of the deburring processes in the traditional industrial field use manual operations, and the deburring process is carried out with the help of hand-held pneumatic or electric tools. Such processing methods are usually inefficient and easily lead to an increase in the rate of defective products. For this reason, some manufacturers have begun to use robots to install electric tools. or pneumatic tools for automated deburring. Compared with manual work, robotic deburring can effectively reduce labor costs and improve production efficiency. However, in the process of deburring complex workpieces, rigid deburring tools are used to process irregular-shaped workpiece burrs such as edges, corners and cross holes. When the tool is broken, it is easy to break the tool or cause damage to the workpiece.

In recent years, floating deburring tools have been adopted at home and abroad, such as a pneumatically driven floating deburring tool launched by AKS, which adjusts the lateral pressure of the tool through a spring device, so as to realize the lateral floating of the tool angle; The robot floating deburring spindle provides driving force through an external air source to achieve 360° radial floating of the tool.

Another example is the patent document with the publication number of CN 204819033 U, which discloses a floating type deburring self-adaptive device, comprising an electric spindle and a tool installed at the front end of the electric spindle; one side of the outer surface of the electric spindle front end is provided with There are a plurality of single-acting floating cylinders, the end of the piston shaft of the floating cylinder is in contact with the outer side wall of the electric main shaft, the rear end of the electric main shaft is fixedly connected with a floating connecting body, and the rear end of the shaft part of the floating connecting body extends into In the inner hole of a floating bearing, the floating bearing has a spherical structure and can make the floating connecting body drive the electric spindle to swing inside it; the floating cylinder is connected to an air control unit, and the air control unit includes an air source, a A filter pressure reducing valve connected with the air source and an electrical proportional valve connected with the filtering pressure reducing valve, the electrical proportional valve is connected to each floating cylinder through a pipeline. The utility model can allow the product deformation of the casting, without damaging the body of the casting, and at the same time leaving no burrs.

The common advantages of the above-mentioned floating deburring devices are: high degree of automation and high product qualification rate; however, they all have the following common disadvantages: high cost of floating mechanism, complex structure, and small swing range of the tool handle.

Therefore, there is an urgent need for a new type of floating deburring tool in the market, which can not only be used as a robot end effector in automated operations, but also has a simpler structure and lower manufacturing cost than existing foreign products.

SUMMARY OF THE INVENTION

The invention provides a floating deburring device, which can achieve a good burr removal effect, and at the same time has a simple structure and low manufacturing cost.

A floating deburring device includes a housing protective cover mechanism, a telescopic stroke mechanism fixed on the inner bottom of the housing protective cover mechanism, an electric spindle fixing mechanism for installing a tool, and a floating movement connected to the front end of the telescopic stroke mechanism The front end of the floating motion mechanism is connected with the rear end of the electric spindle fixing mechanism, and the front end of the electric spindle fixing mechanism protrudes from the front end of the housing protective cover mechanism.

The floating motion mechanism is a mechanism that enables the floating deburring device to have a floating function. When the external force (deburring cutting force) perpendicular to the direction of the electro-spindle reaches a certain level, the floating motion mechanism allows the electro-spindle to swing to a certain extent along the direction of the external force; after the external force disappears, the electro-spindle returns to its original position, thereby realizing the floating deburring function. . The floating motion function of the floating deburring device is realized by converting the single-degree-of-freedom linear motion of the cylinder into two-degree-of-freedom rotational motion.

By setting the telescopic stroke mechanism and the floating motion mechanism, the present invention allows the tool to have a certain degree of radial floating during the machining process, and can achieve a good burr removal effect without precisely defining the boundary; the present invention can be installed in a numerical control machining center or a manipulator Therefore, when dealing with irregular burrs, it is not easy to damage the tool or workpiece.

The floating motion mechanism only uses several sets of bearings to cooperate with the telescopic stroke mechanism to realize the floating of the tool in the 360° direction, with simple structure and low manufacturing cost. Preferably, the floating motion mechanism includes:

The guide and positioning fixing seat is connected with the fixing piece of the telescopic travel mechanism, and a movable plate installation cavity is arranged in the middle;

The movable mechanism support seat is fixed around the guide and positioning fixing seat;

The lateral movable plate is installed in the support seat of the movable mechanism through the movable plate bearing, and the middle section is provided with a lateral through hole;

The longitudinal movable plate is installed in the movable mechanism support seat through the movable plate bearing and has an included angle with the rotation axis of the transverse movable plate, and the middle section is provided with a longitudinal through hole coaxially arranged with the transverse through hole; further preferably The rotation axes of the longitudinal movable plate and the horizontal movable plate are perpendicular to each other.

The movable disk, the rear end extends into the movable disk mounting cavity and abuts on the movable member of the telescopic stroke mechanism, and the front end passes through the transverse through hole and the longitudinal through hole along the axial direction and is fixed with the electric spindle backend connection.

The mounting shaft of the movable disk is the main matching object of the movable disk. The hinge connection formed by the two makes the movable disk only have one relative rotational degree of freedom and one relative movement degree of freedom, and the moving degree of freedom is further blocked by the lateral passage hole, so the If the horizontal movable disk is the reference object, the movable disk has only one rotational degree of freedom; since the horizontal movable disk can rotate around its own rotation axis, the movable disk finally has two vertical rotation degrees of freedom.

The oil sealing cover is fixedly connected with the guiding and positioning fixing seat and is used for sealing the mounting cavity of the movable disk.

In order to further improve the rotational flexibility of the floating motion mechanism of the present invention, preferably, the movable disk is installed in the lateral passage hole through a movable disk mounting shaft, and the movable disk mounting shaft is perpendicular to the electric spindle. The movable disk installation shaft penetrates the movable disk through the movable disk mounting hole, and the movable disk can rotate around the movable disk installation shaft; in the initial state, the horizontal passing hole and the longitudinal passing hole are parallel to each other, and the former is used to prevent the movable disk from being short in the horizontal passing hole. Sliding in the side direction, and limit the rotation range of the movable plate in the short side direction of the transverse hole, the latter is used to limit the rotation angle range of the movable plate in the direction of the rotation axis of the transverse movable plate; in the initial state, the axis of the movable plate and the transverse movable plate The axis of rotation and the axis of rotation of the longitudinal movable plate are both perpendicular to each other. Preferably, the mounting shaft of the movable plate and the rotation axis of the lateral movable plate are perpendicular to each other.

In order to prevent the cut burrs and dust from entering the protective cover mechanism of the casing, it is preferable to further include a silicone dust cover covering the front end of the protective cover mechanism of the casing to cover the fixing mechanism of the electric spindle.

In order to facilitate installation and disassembly, preferably, the housing protective cover mechanism includes a rear housing housing, a middle housing housing and a front housing housing which are connected in sequence. The housing protective cover mechanism is divided into multiple sections, which is convenient to install the telescopic stroke mechanism, the floating motion mechanism and the electric spindle fixing mechanism.

The telescopic stroke mechanism can adopt various elastic parts, such as cylinder structures, springs, rubber blocks, etc. Preferably, the telescopic stroke mechanism includes:

Cylinder, the bottom is fixed on the inner side wall of the end shell;

The rear end of the movable guide plate is connected with the piston of the cylinder, and the front end extends into the installation cavity of the movable plate and abuts against the movable plate. In the initial state, the movable plate and the end face of the movable guide plate are coincident. In the case of floating displacement, the movable plate is inclined at a certain angle, which forms a point contact with the movable guide plate and causes the movable guide plate to compress the cylinder to move.

Compared with the floating deburring device based on the spring device, the advantages of using the air cylinder are: (1) it has better dynamic response characteristics and can realize constant force cutting; (2) combined with the force sensor, it can be based on the machining process. Changes in cutting force enable dynamic adjustment of floating rigidity. Compared with the existing air-floating deburring main shaft, the invention combines the air cylinder and the floating motion mechanism, and has the following advantages: (1) low manufacturing difficulty and low cost; (2) low coupling degree between the main shaft and the floating mechanism, which can be easily Implement replacement.

Preferably, the electric spindle fixing mechanism includes:

The electric spindle fixing pipe, the rear end is fixedly connected with the front end of the movable plate, and the front end protrudes from the hole in the middle of the front end outer cover;

The electro-spindle is fixedly connected with the front end of the electro-spindle fixing tube through the electro-spindle locking sleeve, so as to realize the motion transmission from the electro-spindle to the floating motion mechanism.

The floating deburring device of the present invention is aimed at the floating deburring in the case of irregular burr shapes and large dimensional changes. By default, by applying a constant pressure of compressed air to the cylinder, the floating deburring device can have a constant size of restoring force. (reflecting the floating stiffness), so as to realize constant pressure floating control; by connecting an electric proportional valve with air pressure control function, the floating stiffness can be adjusted.

By introducing a force sensor to detect the real-time cutting force, the cutting state of the current floating deburring device can be judged. On the one hand, if the amplitude of the cutting force is too large, it means that the size of the burr is too large or the hardness is too high; The variation range of the force judges whether the deburring process meets the qualified standard.

In view of the processing conditions of irregular burr shape, the deburring process is completed by multiple processing methods. First, the cylinder restoring force is adjusted through the electric proportional valve, and the deburring device is set to a small floating stiffness to ensure that even if a large burr is encountered, the Effective avoidance can be formed through the floating motion of the electric spindle. At the same time, the change of cutting force in the first machining is checked by the force sensor, and the floating stiffness in the second machining is adjusted accordingly until the range of cutting force detected by the force sensor reaches the qualified standard.

Beneficial effects of the present invention:

The floating deburring device and method of the present invention, by setting the telescopic stroke mechanism and the floating motion mechanism, allow the tool to generate a certain degree of radial floating during the machining process, and can achieve a good burr removal effect without accurately defining the boundary, and can be installed On CNC machining centers or robots, it is not easy to damage the tool or workpiece when dealing with irregular burrs.

Description of drawings

FIG. 1 is a schematic cross-sectional view of the floating deburring device of the present invention.

FIG. 2 is a schematic structural diagram of the housing protective cover mechanism of the present invention.

FIG. 3 is a schematic structural diagram of the telescopic stroke mechanism of the present invention.

FIG. 4 is a schematic structural diagram of the floating motion mechanism of the present invention.

5 is a schematic cross-sectional view of the floating motion mechanism of the present invention.

FIG. 6 is a schematic structural diagram of the electric spindle fixing mechanism of the present invention.

FIG. 7 is a schematic structural diagram of the silica gel dust jacket of the present invention.

FIG. 8 is a schematic structural diagram of the guide and positioning fixing seat of the present invention.

FIG. 9 is a schematic view of the structure of the horizontal movable plate of the present invention.

Fig. 10 is a schematic view of the structure of the longitudinal movable plate of the present invention.

Figure 11 is a schematic view of the structure of the movable guide plate of the present invention.

FIG. 12 is a schematic diagram of the working principle of the floating deburring device of the present invention.

Detailed ways

In order to further describe the technical features and effects of the present invention, the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

As shown in FIGS. 1-12 , the floating deburring device of this embodiment includes: a housing protective cover mechanism 1 , a telescopic travel mechanism 2 , a floating motion mechanism 3 , an electric spindle fixing mechanism 4 and a silicone dust jacket 5 . The telescopic travel mechanism 2 is fixed on the inner bottom of the housing protective cover mechanism 1, the floating motion mechanism 3 is connected with the front end of the telescopic travel mechanism 2, the rear end of the electric spindle fixing mechanism 4 is connected with the front end of the floating motion mechanism 3, and the front end of the electric spindle fixing mechanism 4 Protruding from the front end of the housing protective cover mechanism 1 , the silicone dust cover 5 is sleeved on the housing protective cover mechanism 1 to cover the electric spindle fixing mechanism 4 .

The housing shield mechanism 1 includes: a terminal housing cover 10, a middle housing housing 11 and a front housing housing 12, the rear end of the intermediate housing housing 11 and the front end of the terminal housing housing 10 are fixedly connected, and the rear end of the front housing housing 12 is connected with the middle housing housing The front end of 11 is fixedly connected.

The telescopic stroke mechanism 2 includes: a cylinder 20 and a movable guide plate 21. The outer thread of the end of the movable guide plate 21 is connected with the inner threaded hole of the cylinder 20 to achieve relative fixing between the two, and the bottom of the cylinder 20 is fixed on the inner side of the end housing cover 10. On the wall, the connection is fixed by means of bolts.

The floating motion mechanism 3 includes: a guide and positioning fixed seat 30, a horizontal movable plate 31, a longitudinal movable plate 32, a movable plate 33, an oil sealing cover 34, a movable mechanism support seat 35, a movable plate bearing 360, and a movable plate bearing axial positioning nut 361, movable plate bearing axial positioning circlip 362, movable plate bearing end cover 363, movable plate mounting shaft 370, movable plate bearing 371, movable plate axial positioning nut 372, movable plate bearing end cover 373 and movable plate elastic stopper Circle 374.

The movable mechanism support seat 35 is fixed around the guide and positioning fixed seat 30, the lateral movable plate 31 is installed on the movable mechanism support seat 35 through the movable plate bearing 360, and the movable plate bearing 360 is clamped in the movable mechanism support seat 35, and is moved through the movable mechanism support seat 35. The plate bearing axial positioning nut 361 and the movable plate bearing axial positioning elastic retaining ring 362 realize the axial positioning, and the movable plate bearing axial positioning nut 361 and the movable plate bearing axial positioning elastic retaining ring 362 are respectively arranged on the horizontal movable plate 31. both ends.

In the same way, the longitudinal movable plate 32 is installed on the movable mechanism support seat 35 through the movable plate bearing 360 , and the movable plate bearing axial positioning nut 361 and the movable plate bearing axial positioning elastic retaining ring 362 realize the axial positioning, and the movable plate bearing realizes the axial positioning. The axial positioning nut 361 and the axial positioning elastic retaining ring 362 of the movable plate bearing are respectively disposed at both ends of the longitudinal movable plate 32 .

The movable plate 33 passes through the lateral through hole of the lateral movable plate 31, and is mounted on the lateral movable plate 31 through the movable plate installation shaft 370 (the movable plate installation shaft 370 passes through the movable plate 33), and the movable plate installation shaft 370 passes through the movable plate bearing 371 It is installed in the lateral passage hole of the lateral movable plate 31, and the axial positioning is realized by the movable plate axial positioning nut 372 and the movable plate axial positioning elastic retaining ring 374; the movable plate bearing end cover 363 is fixed on the movable mechanism support seat 35 , the movable plate bearing end cover 373 is fixed on the horizontal movable plate 31; the oil sealing cover 34 is installed on the guide and positioning fixed seat 30 through a screw connection, the guiding and positioning fixed seat 30 is fixed on the cylinder 20, and the rear end of the movable plate 33 Abut on the movable guide plate 21 .

The installation directions of the transverse movable plate 31 and the longitudinal movable plate 32 are perpendicular to each other, and there are coaxially arranged transverse through holes 3101 and longitudinal through holes 3201, respectively allowing the movable plate installation shaft 370 to tilt in the longitudinal and transverse directions; The movable plate installation shaft 370 is perpendicular to the axial direction of the horizontal movable plate 31 and is installed in the movable plate installation hole 3102 (the circular through hole on the horizontal movable plate 31, the picture needs to be edited), and is in the initial state with the longitudinal movable plate 32. The axis of rotation is coaxial. The longitudinal movable plate 32, the lateral movable plate 31, the movable disk mounting shaft 370 and the related bearings together constitute a universal joint-like mechanism. When the movable plate 33 rotates around the movable plate installation shaft 370, that is, tilts in the longitudinal direction, the lateral movable plate 31 is driven to rotate at an equal angle.

The electro-spindle fixing mechanism 4 includes: an electro-spindle 40 , an electro-spindle fixing tube 41 , and an electro-spindle locking sleeve 42 . The front end of the motor spindle 41 is fixedly connected to the front end of the movable plate 33 by bolts, and the front end of the motor spindle fixing tube 41 protrudes from the middle hole of the front end housing cover 12. Grease flows out.

As shown in FIG. 12 , during the working process, when the electric spindle 40 is subjected to radial external force, it can use the lateral movable plate 31 (rotatable around the X direction), the longitudinal movable plate 32 (rotatable around the Y direction), the movable disk The mounting shaft 370 (rotatable around the Y direction), and the universal joint-like mechanism formed by each supporting and mounting fixed component realizes radial (XY plane) swing, which will cause the movable disk 33 to tilt and squeeze the piston of the cylinder 20 After moving downward, after the external force disappears, the piston of the cylinder 20 returns to its original position under the action of compressed air, and drives the universal joint-like mechanism to return to its original position. At this time, the electric spindle 40 will also return to its original position, thereby realizing the floating deburring effect. .

The above embodiments do not limit the present invention in any form, and all technical solutions obtained in the form of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims (7)

1. a kind of floating burr remover, including unit outer cover protective cover mechanism are fixed on the inside bottom of the unit outer cover protective cover mechanism The flexible Strok mechanism in portion and electro spindle fixed mechanism for installing cutter, which is characterized in that further include and flexible stroke The rear end of the floating motion mechanism of device front end connection, the front end of the floating motion mechanism and the electro spindle fixed mechanism connects It connects, the front end of the electro spindle fixed mechanism is stretched out from the front end of unit outer cover protective cover mechanism；

The floating motion mechanism includes:

Guiding and positioning fixing seat, connect, centre is equipped with movable disk installation cavity with the fixing piece of the flexible Strok mechanism；

Movable device support base is fixed on around the guiding and positioning fixing seat；

Laterally movable plate is mounted in the movable device support base by movable plate bearing, and middle section is equipped with laterally across hole；

Longitudinally-moving plate is mounted on turn in the movable device support base and with the laterally movable plate by movable plate bearing Shaft line have angle, middle section be equipped with it is described laterally across hole coaxial arrangement longitudinally through hole；

Movable disk, rear end are protruded into the movable disk installation cavity and are resisted against on the movable part of the flexible Strok mechanism, front end along It is connected laterally across hole with the rear end longitudinally through electro spindle fixed mechanism described in Kong Bingyu axially across described；

Oil sealing cap is fixedly connected with the guiding and positioning fixing seat for sealing the movable disk installation cavity.

2. floating burr remover as described in claim 1, which is characterized in that the movable disk is pacified by movable disk installation axle Mounted in described laterally across in hole, the vertical electro spindle of the movable disk installation axle.

3. floating burr remover as claimed in claim 2, which is characterized in that the movable disk installation axle is laterally lived with described The pivot center of movable plate is mutually perpendicular to.

4. floating burr remover as described in claim 1, which is characterized in that further include covering before shell shielded closure mechanism The silica gel dirt-proof boot for covering electro spindle fixed mechanism on end.

5. floating burr remover as described in claim 1, which is characterized in that the unit outer cover protective cover mechanism includes successively connecting Rear end jacket, intermediate case cover and the front-end case cover connect.

6. floating burr remover as claimed in claim 5, which is characterized in that the flexible Strok mechanism includes:

Cylinder, bottom are fixed on the inner sidewall of rear end jacket；

The piston of activity-oriented disk, rear end and cylinder connects, front end protrude into the movable disk installation cavity and the movable disk against.

7. floating burr remover as claimed in claim 5, which is characterized in that the electro spindle fixed mechanism includes:

Electro spindle fixing pipe, rear end are fixedly connected with the front end of the movable disk, and front end is from the hole among the front-end case cover It stretches out；

Electro spindle is fixedly connected by electro spindle lock sleeve with the front end of electro spindle fixing pipe.