CN212095897U - Rigid-flexible combined pressure type flexible compliant polishing tool assembly - Google Patents

Abstract

The utility model relates to the technical field of machining, in particular to a rigid-flexible combined pressure type flexible compliant polishing tool assembly, which comprises a main shaft, a floating mechanism and a locking mechanism, wherein the main shaft can deflect relative to a floating seat; the locking mechanism comprises a driving unit arranged on the main shaft and a locking sleeve sleeved on the main shaft, and the driving unit can drive the locking sleeve to move in a reciprocating mode along the axial direction of the main shaft so as to lock or release the floating seat. The technical scheme has two working modes of rigid cutting and flexible polishing, and can meet the process requirements of cutting and polishing simultaneously. The mode that adopts the combination of rigid and flexible can promote the quality of polishing and the efficiency of polishing to guarantee the life-span of cutter, can effectively promote the application and the popularization that the foundry goods was automatic to polish through this technique.

Description

Rigid-flexible combined pressure type flexible compliant polishing tool assembly

Technical Field

The utility model belongs to the technical field of the machining technique and specifically relates to a flexible grinding tool assembly that follows of pressure type of combination of just gentle is related to.

Background

The automatic casting grinding process in the machining field comprises cutting and grinding, generally, a disc-shaped grinding wheel is used for cutting casting head residual blocks, vent needles, exhaust pieces, meat adding and the like, the grinding content is characterized in that the cross section area is large, the grinding content is discretely distributed on each part of the casting, and a tool assembly is required to have enough rigidity during cutting so as to overcome grinding resistance and realize high-efficiency grinding operation, and meanwhile, the necessary premise that the service lives of the tool assembly and the grinding wheel are ensured is provided. In addition, a cylindrical or conical grinding wheel is adopted to grind parting surface flash, burrs, orifice separation skin and the like, the grinding content is characterized by small cross sectional area, the grinding track mainly comprises a complex curved surface/curve, and copying grinding is required according to specific shapes, so that the final grinding effect is ensured.

The flexible floating tool is used for improving the tail end track profiling precision of a tool of polishing equipment and achieving the shape following polishing effect. The technology provides adjustable radial pressure for the main shaft by using compressed air as a power source so that the cutter can generate radial floating, solves the problem of insufficient tail end track profiling precision of automatic polishing equipment in the process of processing complex curved surfaces, and provides a more economical and applicable method for the polishing process. However, the method cannot meet the cutting requirements of casting head residual blocks, vent pins, exhaust fins, fleshing and the like, and casting polishing and cutting are generally finished by replacing corresponding cutters by adopting the same main shaft, so that the production efficiency of equipment is improved, the cost of the equipment is reduced, and the problems of unstable polishing quality, low polishing efficiency, cutter clamping, cutter collision, low cutter service life and the like exist when the main shaft provided with the flexible mechanism is used for cutting.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

To prior art problem, the utility model provides a flexible grinding tool assembly that follows of pressure type of combination just, the main shaft that aims at disposing the flexible mechanism among the solution prior art is used for the cutting to exist at the unstable problem of quality and the fragile problem of cutter of polishing when depositing.

(II) technical scheme

In order to achieve the above object, the utility model provides a flexible grinding tool assembly that follows of pressure type of rigid-flexible combination, it includes:

the tool holder comprises a main shaft, a tool and a tool holder, wherein a first end of the main shaft is used for mounting a tool, a sliding sleeve is fixedly sleeved outside the main shaft, and a sliding ring extending outwards along the radial direction is formed on the sliding sleeve;

the floating mechanism comprises a floating seat, a fixing ring fixed on the floating seat and sleeved outside the sliding sleeve, and a plurality of piston cylinders arranged in the floating seat and distributed at intervals along the circumferential direction of the main shaft; the piston cylinder has a preset floating holding force and can stretch and retract along the axial direction of the main shaft, and the sliding ring is clamped between the free end of the piston cylinder and the fixing ring; wherein a gap exists between the floating seat and the main shaft, and a gap exists between the sliding ring and the floating seat, so that the main shaft can deflect relative to the floating seat;

the locking mechanism comprises a driving unit arranged on the main shaft and a locking sleeve sleeved on the main shaft, and the driving unit can drive the locking sleeve to reciprocate along the axial direction of the main shaft so as to lock or release the floating seat.

Preferably, the piston cylinder is a first cylinder, and a gas interface is arranged on the first cylinder; the drive unit includes the second cylinder and is fixed in the mounting panel on the second end of main shaft, the one end of second cylinder is fixed in on the mounting panel just the other end of second cylinder with the locking cover is connected.

Preferably, the floating mechanism still includes the gas accuse unit, the gas accuse unit include air supply, air feed house steward, be used for to the first branch pipe of gas interface air feed, set up in electric proportional valve on the first branch pipe, be used for to the second branch pipe of second cylinder air feed and set up in solenoid valve on the second branch pipe, the air supply passes through air feed house steward respectively with first branch pipe the second branch union coupling.

Preferably, a filtering pressure reducing valve is arranged on the air supply main pipe.

Preferably, a sliding groove is formed on one side of the fixing ring, which is in contact with the sliding ring, and one end of the sliding ring is matched with the sliding groove.

Preferably, the sliding groove has a semicircular cross section.

Preferably, the pressure-type flexible compliant sanding tool assembly further comprises a dust guard disposed on the floating seat, the dust guard covering the second end of the spindle.

Preferably, a dynamic sealing ring is arranged between the sliding sleeve and the fixing ring.

Preferably, the tool is a disc-shaped grinding wheel or a cylindrical grinding wheel, and a tool shank is arranged on the tool and can be mounted on the first end of the spindle.

Preferably, the spindle is an electrical spindle or a mechanical spindle.

(III) advantageous effects

The utility model has the advantages that: the rigid-flexible combined pressure type flexible compliant grinding tool assembly in the technical scheme has two working modes of rigid cutting and flexible grinding, and can meet the process requirements of cutting and grinding simultaneously. When flexible polishing is needed, the driving unit on the main shaft can drive the locking sleeve to be far away from the floating seat so as to release the floating seat, and therefore the main shaft can deflect relative to the floating seat. At the moment, the piston cylinders apply corresponding pressure to the sliding rings under the action of preset floating retaining force, so that the main shaft can keep flexible balance along with the sliding rings, the working surface of the grinding wheel can follow the shape of a casting to perform copying (compliant) grinding, the grinding effect is smooth and flat, and the copying precision requirement on the grinding track of the grinding equipment is reduced. When rigid cutting is needed, the driving unit on the main shaft can drive the locking sleeve to be in close contact with the floating seat so as to lock the floating seat, the main shaft is rigidly connected with the floating seat, and the cutter on the main shaft can overcome cutting resistance and meet the cutting requirements on sprue residue blocks, vent pins, exhaust fins, fleshing and the like on castings. The mode that adopts the combination of rigid and flexible can promote the quality of polishing and the efficiency of polishing to guarantee the life-span of cutter, can effectively promote the application and the popularization that the foundry goods was automatic to polish through this technique.

Drawings

FIG. 1 is a schematic diagram of a rigid-flex combination pressure-type compliant grinding tool assembly according to the present invention;

FIG. 2 is a schematic diagram of a half-section structure of a rigid-flexible combination pressure type flexible compliant grinding tool assembly of the present invention;

fig. 3 is a schematic view of a half-section of a flexible polishing mode of the rigid-flexible combination pressure-type flexible compliant polishing tool assembly of the present invention;

FIG. 4 is a schematic view of a half-section of a rigid cutting mode of operation of the rigid-flex combination pressure-type flexible compliant grinding tool assembly of the present invention;

fig. 5 is a schematic diagram of the pneumatic control unit of the rigid-flexible pressure type flexible compliant polishing tool assembly of the present invention.

[ description of reference ]

100: a pressure-type flexible compliant sanding tool assembly;

1: a main shaft; 11: a sliding sleeve; 111: a slip ring;

2: a floating mechanism; 21: a floating seat; 22: a piston cylinder; 23: a fixing ring; 231: a sliding groove; 24: a gas interface; 25: a movable sealing ring; 26: a dust cover;

3: a locking mechanism; 31: a locking sleeve; 32: a second cylinder; 33: mounting a plate;

4: an air control unit; 41: a gas source; 42: a filtering pressure reducing valve; 43: an electromagnetic valve; 44: an electric proportional valve;

101: a cylindrical grinding wheel; 102: a disc-shaped grinding wheel; 103: polishing equipment;

200: casting; 201: parting surface flash; 202: a gate residual block.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1-4, the present invention provides a rigid-flexible pressure type flexible compliant grinding tool assembly 100, which includes: a main shaft 1, a floating mechanism 2 and a locking mechanism 3. The first end of the main shaft 1 is used for installing a tool, a sliding sleeve 11 is fixedly sleeved outside the main shaft 1, and a sliding ring 111 extending outwards along the radial direction is formed on the sliding sleeve 11. The floating mechanism 2 comprises a floating seat 21, a fixing ring 23 fixed on the floating seat 21 and sleeved outside the sliding sleeve 11, and a plurality of piston cylinders 22 arranged in the floating seat 21 and distributed at intervals along the circumferential direction of the main shaft 1; each piston cylinder 22 has a predetermined floating holding force and can extend and contract along the axial direction of the main shaft 1, and the sliding ring 111 is clamped between the free end of the piston cylinder 22 and the fixed ring 23; a gap exists between the floating seat 21 and the main shaft 1, and a gap exists between the sliding ring 111 and the floating seat 21, so that the main shaft 1 can deflect relative to the floating seat 21. In addition, the locking mechanism 3 includes a driving unit provided on the main shaft 1 and a locking sleeve 31 sleeved on the main shaft 1, and the driving unit can drive the locking sleeve 31 to reciprocate along the axial direction of the main shaft 1 to lock or release the floating seat 21.

Under the condition that the main shaft 1 and the floating seat 21 are mutually released, when the reaction force generated when the cutter is contacted with the casting 200 for grinding, gravity, friction force and the like are superposed in one direction and are larger than the floating holding force in the corresponding direction, the piston cylinder 22 corresponding to the direction is contracted; when the reaction force generated when the tool is contacted with the casting 200 for grinding is superposed with gravity, friction force and the like in one direction and is smaller than the floating holding force in the corresponding direction, the piston cylinder 22 corresponding to the direction is extended, and the piston cylinders 22 in all directions flexibly support the sliding ring 111 without being separated from the sliding ring 111, so that the main shaft 1 can maintain the flexible balance effect equivalent to the floating seat 21, and the working mode is the flexible grinding working mode. When the piston cylinder 22 on one side of the main shaft 1 contracts and the piston cylinder 22 on the other side extends, a deflection effect as shown in fig. 3 is generated, and a deflection included angle β is generated between the axial direction of the main shaft 1 and the axial direction of the floating seat 21, wherein the size of the included angle β can be limited according to the clearance between the floating seat 21 and the main shaft 1 and the clearance between the sliding ring 111 and the floating seat 21. For example, in fig. 3, specifically, the piston cylinder 22 on the upper side of the spindle 1 is extended and the piston cylinder 22 on the lower side is contracted, so that the upper half of the spindle 1 is inclined toward one end on which the tool is mounted, and the lower half of the spindle 1 is inclined toward the opposite other end.

Further stress analysis was as follows: in this flexible sanding mode of operation, the force acting between the piston cylinder 22 and the sliding sleeve 11 (floating holding force) is fully capable of overcoming the weight of the spindle 1, the locking mechanism 3 and the tool. During grinding, grinding force is applied to the spindle 1 along the radial direction, the grinding force and the gravity of each component are defined as working force, and when the working force in one direction exceeds the floating holding force in the direction, the sliding sleeve 11 deflects (swings) along with the spindle 1 around the sliding groove 231 on the fixed ring 23 until the working force and the floating holding force reach balance; when the working force in each direction is smaller than the corresponding floating holding force (grinding force is eliminated), the main shaft 1 is restored to the initial balance state along with the sliding sleeve 11, and the axial direction of the main shaft 1 is coincident with or parallel to the axial direction of the floating seat 21. In summary, in this working mode, the floating mechanism 2 can provide radial floating for the tool, i.e. the tool follows the spindle 1 to deflect relative to the axial direction of the floating seat 21 or to achieve initial balance, and the floating holding force can be adjusted according to actual requirements.

In contrast, in the case where the main shaft 1 and the floating mount 21 are locked to each other, for example, as shown in fig. 4, the locking sleeve 31 is driven to move in the axial direction of the main shaft 1 to be caught in the gap between the main shaft 1 and the floating mount 21, so that the main shaft 1 and the floating mount 21 are kept locked, and thus the main shaft 1 is prevented from deflecting relative to the floating mount 21, and the main shaft 1 and the floating mount 21 are rigidly connected to facilitate rigid cutting of an unnecessary cast structure on the cast product 200, which is a rigid cutting operation mode.

The rigid-flexible pressure type flexible compliant grinding tool assembly 100 in the embodiment has two working modes of rigid cutting and flexible grinding, can meet the technological requirements of cutting and grinding simultaneously, can realize flexible switching of the two working modes through the locking mechanism 3, and improves grinding efficiency of the casting 200. When the flexible sanding is required, the drive unit on the spindle 1 drives the locking sleeve 31 away from the floating seat 21 to release the floating seat 21, so that the spindle 1 can be deflected relative to the floating seat 21. At this time, the plurality of piston cylinders 22 apply corresponding pressure to the sliding ring 111 under the action of a preset floating holding force, so that the main shaft 1 can keep flexible balance along with the sliding ring 111, and further, the working surface of the grinding wheel can follow the shape of the casting 200 to perform copying (compliant) grinding, so that the grinding effect is smooth and flat, and meanwhile, the copying precision requirement on the grinding track of the grinding equipment 103 is reduced. When rigid cutting is needed, the driving unit on the main shaft 1 can drive the locking sleeve 31 to be in close contact with the floating seat 21 so as to lock the floating seat 21, the main shaft 1 and the floating seat 21 are in rigid connection, and a cutter on the main shaft 1 can overcome cutting resistance and meet cutting requirements on a sprue residual block 202, a vent needle, an exhaust sheet, meat enrichment and the like on a casting 200. The mode that adopts the combination of rigid and flexible can promote the quality of polishing and the efficiency of polishing to guarantee the life-span of cutter, can effectively promote the application and the popularization that the foundry goods was automatic to polish through this technique.

It should be noted that the piston cylinder 22 of the present invention may be a cylinder or a hydraulic cylinder, or may even be a structure in which the piston is driven by a compression spring, as long as a predetermined floating holding force can be provided. The preset floating holding force can be a uniform value all the time, and can also be flexibly adjusted to be a variable value according to requirements. In a preferred embodiment, the piston cylinder 22 is a first cylinder, and the first cylinder is provided with a gas port 24, and compressed air with a proper pressure can be filled into the piston cylinder 22 through the gas port 24, so that the floating retention force of the piston cylinder 22 can be flexibly adjusted according to actual requirements. In addition, in order to facilitate the control of the position of the locking sleeve 31, the driving unit may include a second cylinder 32 and a mounting plate 33 fixed to the second end of the main shaft 1, one end of the second cylinder 32 is fixed to the mounting plate 33, and the other end of the second cylinder 32 is connected to the locking sleeve 31. When the main shaft 1 and the floating mechanism 2 are kept rigidly connected, the pressure of the compressed air entering the floating mechanism 2 is adjusted to the maximum pressure of the system. In this operating mode, the radial cutting forces to which the tool is subjected during operation are transmitted via the spindle 1 to the locking sleeve 31, the locking sleeve 31 being further transmitted to the floating seat 21, the floating seat 21 and the sanding device 103 being fixed against cutting resistance.

As shown in fig. 5, in order to flexibly adjust the pressure in the first cylinder and the second cylinder 32 according to different working conditions, the floating mechanism 2 further includes an air control unit 4, the air control unit 4 includes an air source 41 (which may be compressed air), an air supply header, a first branch pipe for supplying air to the air interface 24, an electric proportional valve 44 disposed on the first branch pipe, a second branch pipe for supplying air to the second cylinder 32, and an electromagnetic valve 43 disposed on the second branch pipe, and the air source 41 is connected to the first branch pipe and the second branch pipe through the air supply header, respectively.

Wherein the electromagnetic valve 43 controls the gas pressure in the second cylinder 32, indirectly controls the position of the locking sleeve 31, and thus realizes the locking and releasing between the main shaft 1 and the floating seat 21. The electric proportional valve 44 is a continuously controlled valve, and is characterized in that the output quantity changes with the change of the input quantity, and a certain proportional relation exists between the output quantity and the input quantity, so that the stepless regulation of pressure and speed can be realized. The air supply pressure to the piston cylinder 22 is adjusted through the electric proportional valve 44, so that the floating holding force of the main shaft 1 is adjusted, and the acting force between the cutter and the casting 200 can be indirectly adjusted through adjusting the compressed air pressure according to different grinding contents. In addition, increasing the floating holding force of the piston cylinder 22 can also assist the locking mechanism 3 to complete the locking work of the main shaft 1 and the floating seat 21, so that the main shaft 1 can be completely kept locked with the floating seat 21 in the original state.

Referring again to fig. 5, in order to ensure that the first and second cylinders 32 can fully exert various performances, a filtering and pressure reducing valve 42 may be further disposed on the air supply main, and the filtering and pressure reducing valve 42 may dry and lubricate the compressed air and may regulate and stabilize the outlet pressure. The filter pressure reducing valve 42 for compressed air adopts a rolling type diaphragm, and when the input end fluctuates, the diaphragm of the pressure reducing valve automatically adjusts, so that the pressure is stably output, and the pressure stability is ensured. In addition, the filtering pressure reducing valve 42 may also be a combined filtering pressure reducing valve, which can be a high-precision pressure reducing valve according to the requirement of the output pressure precision; in the using process, after the compressed air is subjected to two-stage three-section type filter to remove impurities such as oil, water, dust and the like in the compressed air, the service life of the pressure reducing valve membrane and the precision of pressure regulation are greatly improved; because the service life of the filter element is long, the filter element and the pressure reduction element can be repaired independently in maintenance, the integral replacement is not needed, and the cost is greatly saved.

In addition, referring again to fig. 2, a sliding groove 231 is formed on the fixed ring 23 on a side contacting the sliding ring 111, and one end of the sliding ring 111 is fitted into the sliding groove 231. The slide groove 231 is formed as an annular groove on the fixed ring 23, and the outer side of the slide ring 111 extends toward the fixed ring 23 and is inserted into the slide groove 231 so that the slide ring 111 can be deflected (swung) based on the slide groove 231. As shown in fig. 3, the cross section of the sliding groove 231 may be semicircular, and the cross section of the end of the sliding ring 111 that is adapted to the sliding groove 231 may also be semicircular, so that the sliding ring 111 can be more smoothly deflected with respect to the sliding groove 231. In other embodiments, the cross-section of the sliding groove 231 may have other shapes as long as the sliding ring 111 can be deflected.

Further, referring again to fig. 3 and 4, the pressure-type flexible compliant sanding tool assembly 100 further includes a dust cover 26 disposed on the floating seat 21, the dust cover 26 covering the second end of the spindle 1, so as to prevent dust from entering between the spindle 1 and the floating mechanism 2, and to ensure that the spindle 1, the floating mechanism 2, and the locking mechanism 3 can maintain good working conditions.

In a more preferred embodiment, as shown in fig. 2, a dynamic seal ring 25 may be provided between the sliding sleeve 11 and the fixed ring 23, so as to achieve a sealing effect without affecting the swing of the main shaft 1. The dynamic seal 25 may be an O-ring or a star-ring, for example, to seal between the relatively moving parts.

Referring again to fig. 1, 3 and 4, in the above embodiment, the tool may be a disc-shaped grinding wheel 102 or a cylindrical grinding wheel 101, and the tool is provided with a tool shank, which can be mounted on the first end of the spindle 1, and the tool is replaced by replacing the tool shank. The cylindrical grinding wheel 101 is used for grinding parting surface flash 201 on the casting 200, and the disc-shaped grinding wheel 102 is used for cutting a vent pin or gate remnant block 202 on the casting 200.

In the above-described embodiments, the spindle 1 may be an electric spindle or a mechanical spindle. The electric spindle is a technology which integrates a machine tool spindle and a spindle motor into a whole and is found in the field of numerical control machines, and comprises the electric spindle and accessories thereof, and specifically comprises the electric spindle, a high-frequency conversion device, an oil mist lubricator, a cooling device, a built-in encoder, a tool changing device and the like. The rotor of the spindle motor is directly used as the spindle of the machine tool, the shell of the spindle unit is the base of the spindle motor, and the spindle motor and the machine tool spindle are integrated by matching with other parts. The utility model discloses a when using electric main shaft as main shaft 1, its casing external fixation sets up sliding sleeve 11, and the free end of rotor is used for installing the cutter. The mechanical spindle is a shaft on a machine tool for driving a workpiece or a tool to rotate, and motion and torque are transmitted in the machine mainly through transmission parts such as gears and belt wheels. The utility model discloses a machinery main shaft can set up the band pulley on machinery main shaft when main shaft 1, carries out the transmission of motor to machinery main shaft through band pulley and belt cooperation, makes machinery main shaft both can the rotation can float for floating seat 21 again.

The above description is only for the embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. A rigid-flex pressure-type flexible compliant sanding tool assembly, comprising:

the tool holder comprises a main shaft, a tool and a tool holder, wherein a first end of the main shaft is used for mounting a tool, a sliding sleeve is fixedly sleeved outside the main shaft, and a sliding ring extending outwards along the radial direction is formed on the sliding sleeve;

the floating mechanism comprises a floating seat, a fixing ring fixed on the floating seat and sleeved outside the sliding sleeve, and a plurality of piston cylinders arranged in the floating seat and distributed at intervals along the circumferential direction of the main shaft; the piston cylinder has a preset floating holding force and can stretch and retract along the axial direction of the main shaft, and the sliding ring is clamped between the free end of the piston cylinder and the fixing ring; wherein a gap exists between the floating seat and the main shaft, and a gap exists between the sliding ring and the floating seat, so that the main shaft can deflect relative to the floating seat;

the locking mechanism comprises a driving unit arranged on the main shaft and a locking sleeve sleeved on the main shaft, and the driving unit can drive the locking sleeve to reciprocate along the axial direction of the main shaft so as to lock or release the floating seat.

2. The rigid-flex pressure compliant sanding tool assembly of claim 1, wherein the piston cylinder is a first cylinder having a gas port disposed thereon; the drive unit includes the second cylinder and is fixed in the mounting panel on the second end of main shaft, the one end of second cylinder is fixed in on the mounting panel just the other end of second cylinder with the locking cover is connected.

3. The rigid-flexible pressure type flexible compliant grinding tool assembly according to claim 2, wherein the floating mechanism further comprises a pneumatic control unit, the pneumatic control unit comprises a gas source, a gas supply header pipe, a first branch pipe for supplying gas to the gas interface, an electric proportional valve arranged on the first branch pipe, a second branch pipe for supplying gas to the second cylinder, and an electromagnetic valve arranged on the second branch pipe, and the gas source is connected with the first branch pipe and the second branch pipe respectively through the gas supply header pipe.

4. A rigid-flex pressure-type flexible compliant sanding tool assembly as defined in claim 3, wherein the supply manifold is provided with a filter relief valve.

5. The rigid-flexible pressure-type flexible compliant sanding tool assembly of any one of claims 1-4, wherein the stationary ring has a sliding groove formed on a side thereof in contact with the sliding ring, the sliding ring having an end fitted into the sliding groove.

6. A rigid-flexible combination pressure-type flexible compliant abrading tool assembly according to claim 5, wherein said sliding channel is semi-circular in cross-section.

7. The rigid-flexible combination pressure-type flexible compliant sanding tool assembly of any one of claims 1-4, further comprising a dust shield disposed on the floating seat, the dust shield covering the second end of the spindle.

8. The rigid-flexible pressure-type flexible compliant sanding tool assembly of any of claims 1-4, wherein a dynamic seal ring is disposed between the sliding sleeve and the retaining ring.

9. A rigid-flexible bonded pressure-type flexible compliant grinding tool assembly as in any of claims 1-4 wherein the tool is a disc or cylindrical grinding wheel, the tool having a shank disposed thereon, the shank being mountable on the first end of the spindle.

10. A rigid-flexible combination pressure-type flexible compliant abrading tool assembly according to any of claims 1-4, wherein the spindle is an electrical spindle or a mechanical spindle.

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