CN111805277B - Work fixture - Google Patents
Work fixture Download PDFInfo
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- CN111805277B CN111805277B CN201910286151.0A CN201910286151A CN111805277B CN 111805277 B CN111805277 B CN 111805277B CN 201910286151 A CN201910286151 A CN 201910286151A CN 111805277 B CN111805277 B CN 111805277B
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- expansion sleeve
- fixed seat
- machined
- hole
- workpiece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention provides a tool clamp, which comprises: the first end of the fixed seat is used for extending into the inner hole of the workpiece to be machined, and a gap is reserved between the first end of the fixed seat and the inner hole of the workpiece to be machined; the second end of the fixed seat deviates from the first end; the expansion sleeve is detachably connected with the fixed seat and used for being inserted into and clamped in the gap. Insert whole clearance and expand tightly in the clearance through the tight cover that will expand for the tight cover that expands that is located the clearance all receives the fixing base everywhere and treats the extrusion of machined part hole, makes the tight cover that expands can evenly expand tightly, is favorable to treating the even atress of the hole each department of machined part, ensures to expand tight cover and treats closely laminating between the machined part hole, ensures frock clamp and treats the cooperation length of machined part hole, thereby is favorable to guaranteeing to treat the machining precision of machined part.
Description
Technical Field
The invention belongs to the technical field of machining equipment, and particularly relates to a tool clamp.
Background
In the processing process of the excircle of the compressor rotor, particularly in the compressor type with small gap requirement between a stator and a rotor, the processing quality of the excircle of the rotor has important influence on the bad gap of the assembled compressor; but the rotor excircle processing quality is influenced by the machine tool, and the stability of the rotor tool clamp is also important.
When the rotor excircle is turned, under the condition of ensuring the quality of the rotor inner hole, the matching length of the tool clamp and the rotor inner hole, the fitting degree of the tool clamp and the rotor inner hole and the stress uniformity of the rotor inner hole matching section all have important influence on the rotor excircle jump. The existing inner hole positioning tool clamp is provided with a groove on one end surface to form a hollow structure, the hollow structure is surrounded by a plurality of elastic sheets which are distributed at intervals, and a pull rod is used for driving a mandrel to be separated from and attached to the hollow structure, so that the hollow structure is expanded and contracted by the mandrel to clamp and release a rotor. However, the disadvantages of this clamp are: each is similar the cantilever beam by the tight flexure strip that expands on the hollow structure, and the hollow structure is inserted by one side to the dabber for the flexure strip takes place flexible deformation around the root by the tip, and is poor with rotor hole laminating degree, and laminating length shortens, and the rotor bore atress is uneven when pressing from both sides tightly moreover, and then causes the rotor excircle to beat unstablely, especially to the great rotor model of step and bore length proportion.
Disclosure of Invention
The present invention is directed to solving one of the technical problems of the prior art or the related art.
Therefore, the invention provides a tool clamp in a first aspect.
In view of the above, according to a first aspect of the present invention, there is provided a tool holder, comprising: the first end of the fixed seat is used for extending into the inner hole of the workpiece to be machined, and a gap is reserved between the first end of the fixed seat and the inner hole of the workpiece to be machined; the second end of the fixed seat deviates from the first end; the expansion sleeve is detachably connected with the fixed seat and used for being inserted into and clamped in the gap.
According to the tool clamp provided by the invention, the workpiece to be machined is sleeved on the first end of the fixed seat, the expansion sleeve is inserted into the gap between the fixed seat and the inner hole of the workpiece to be machined and is clamped in the gap, so that the workpiece to be machined can be stably installed on the tool clamp, and the machining precision of the workpiece to be machined is ensured. Specifically, through will expand tight cover and insert whole clearance and expand tightly in the clearance for the tight cover that expands that is located the clearance all receives the fixing base everywhere and treats the extrusion of machined part hole, makes the tight cover that expands can evenly expand tightly, is favorable to treating the even atress in hole each department of machined part, ensures to expand tight cover and treats closely laminating between the machined part hole, ensures frock clamp and the cooperation length of treating the machined part hole, thereby is favorable to guaranteeing the machining precision of treating the machined part. With the correlation technique in, need insert hollow structure by the dabber to take place to detour the deformation and laminate the rotor with the flexure strip by the tip to the root, adopt the fixing base of this application and expand and tightly overlap fixed rotor, prolonged the laminating length of frock clamp with the rotor, ensure that rotor hole stress everywhere is even, can effectively guarantee the machining precision of rotor excircle, avoid the rotor excircle to beat unstably. Of course, the workpiece to be machined in the present application is not limited to the rotor of the motor, and may be other parts having an inner hole.
In addition, can effectively avoid the fixing base and the tight cover integrated into one piece that expands through can dismantling with the fixing base the tight cover that will expand, and lead to the tight cover that expands to expand tightly after treating the hole of machined part, when the external force messenger treats that the machined part shifts out frock clamp, destroy the tight cover that expands and lead to the fixing base, whole frock clamp is scrapped even, only need change the tight cover that expands can. Moreover, the replacement of the expansion sleeve is convenient, the expansion sleeve is prevented from weakening the expansion effect after being used for a long time, the whole tool clamp does not need to be replaced, and the cost is saved.
Wherein, can establish the first end of fixing base into the free end, make things convenient for the rotor suit on the fixing base, still can hold the second of fixing base and fix on the processing equipment of treating the machined part, like lathe, grinding machine, digit control machine tool etc.. When the workpiece to be machined is fixed, the workpiece to be machined can be sleeved on the fixed seat, then the expansion sleeve is sleeved on the fixed seat, and the expansion sleeve is pushed to move towards the gap between the fixed seat and the workpiece to be machined and expand in the gap; the expansion sleeve can be sleeved on the fixed seat, and then the workpiece to be machined is sleeved on the fixed seat, at the moment, the expansion sleeve can be in a relaxed state without extending into the gap or completely extending into the gap, and then the expansion sleeve is pushed to be inserted into the gap and is in a clamped state under the extrusion of the fixed seat and the hole wall of the inner hole of the workpiece to be machined; the expansion sleeve can be movably sleeved on the fixed seat in advance, and when the workpiece to be machined needs to be fixed, the workpiece to be machined is sleeved on the fixed seat.
It should be noted that, in this application, the default tight cover that expands is elastic material, such as rubber, can receive the compressive deformation and expand tightly in the clearance, and the tight cover that expands is the inside through-going cover column structure.
In addition, according to the tooling fixture in the above technical scheme provided by the present invention, the following additional technical features may also be provided:
in the above technical solution, preferably, the fixing base includes a circular truncated cone portion located at the first end thereof, the circular truncated cone portion contracts in a direction away from the second end of the fixing base, and the first end of the fixing base and the second end thereof are distributed oppositely; the inner surface of the expansion sleeve is a conical surface, and the conical surface is used for being attached to the outer surface of the circular table part.
In this technical scheme, including the round platform portion that is located its first end through setting for the fixing base, the round platform portion is to keeping away from the second end direction shrink of fixing base, and the first end of fixing base distributes rather than the second end relatively, is favorable to the bloated tight cover to insert the clearance fast on the one hand, and on the other hand is favorable to treating that the machined part overlaps fast on the round platform portion from first end place direction. In addition, the inner surface of the expansion sleeve is a conical surface, and the inner surface of the expansion sleeve is attached to the outer surface of the circular table portion, so that the expansion sleeve can be radially and uniformly expanded along the outer peripheral surface of the circular table portion in the expansion process, the expansion sleeve is favorably attached to a workpiece to be machined, and the clamping stability of the workpiece to be machined is improved.
Alternatively, the outer peripheral surface of the circular truncated cone portion is parallel to the tapered surface.
In any one of the above technical schemes, preferably, the expansion sleeve comprises a body and a plurality of gaps, the body is a revolving body, the body is sleeved on the fixed seat, and the plurality of gaps are arranged at two ends of the body. Further, a plurality of gaps are distributed at intervals along the circumferential direction of the body.
In this technical scheme, set for the tight cover of expanding and include body and a plurality of breach, every breach is all seted up on an terminal surface of body, through distributing a plurality of breachs at the both ends of body, provides sufficient space for the deformation of body, is favorable to the body compression deformation and evenly expands to the hole atress that is favorable to treating the machined part is even. Furthermore, a plurality of gaps are distributed at intervals along the circumferential direction of the body, so that the expansion uniformity of the body is further ensured.
Optionally, the extending length of each notch is greater than half of the length of the body, and the length direction of the body is the extending direction of the center line surrounded by the body.
In any one of the above technical solutions, preferably, the expansion sleeve further includes a plurality of through holes, the plurality of through holes are disposed on the body and distributed at one end of the plurality of gaps extending into the body, and the plurality of through holes are communicated with the plurality of gaps.
In this technical scheme, set up the through-hole through stretching into the inside one end of body at every breach to be linked together the through-hole with the breach that corresponds, when making the body pressurized expand, even if breach deformation enlarges, because the existence of through-hole, also can not tear the tip of breach open, improve the life of the tight cover that expands.
In any one of the above technical solutions, preferably, the tool fixture further includes: the fixing piece is located at the first end of the fixing base and used for being abutted to the expansion sleeve.
In this technical scheme, through setting up the mounting in the first end department of fixing base to through the tight cover of the bloated of mounting butt, be favorable to withstanding the tight cover that expands, avoid the tight cover that expands to shift out from the clearance. The fixing piece can be arranged on the part of the first end of the fixing piece extending out of the expansion sleeve, and the fixing piece can also be arranged on other parts to prop against the expansion sleeve. The mounting is preferably a threaded part, and after being screwed down, the mounting is abutted to the expansion sleeve, so that the abutment is firm.
In any of the above technical solutions, preferably, the fixing member is detachably disposed on a portion of the first end of the fixing base, which extends out of the expansion sleeve.
In this technical scheme, through setting for mounting detachably to set up on the part that the tight cover of expanding is stretched out to the first end of fixing base, not only make things convenient for the tight cover of butt expansion, avoid the tight cover of expanding to shift out from the clearance, still be favorable to the in-process of assembling on the fixing base, promote the tight cover of expanding and stretch into the clearance.
In any one of the above technical solutions, preferably, the tool fixture further includes: the transmission assembly is detachably connected with the fixing piece and used for driving the fixing piece to move so that the fixing piece pushes the expansion sleeve to be inserted into and clamped in the gap.
In this technical scheme, still include drive assembly through setting for frock clamp, promote the tight cover of expanding by drive assembly directly or indirectly and insert and press from both sides tightly in the clearance, avoid the tight cover of user's manual promotion, ensure that the tight cover of expanding effectively inserts the clearance, closely laminate between the tight cover of expanding and the hole of treating the machined part. Specifically, drive the mounting by drive assembly and remove to make the mounting promote the tight cover that expands and stretch into the clearance, can guarantee the mounting and the tight cover looks butt that expands when the tight cover that expands stops to remove, effectively hinder the tight cover that expands and shift out in the clearance.
In any of the above technical solutions, preferably, the transmission assembly includes: the transmission rod penetrates through the fixed seat and can move in the through hole of the fixed seat; the fixing piece is arranged on the part, extending out of the first end of the fixed seat, of the transmission rod and used for pushing the expansion sleeve to be inserted into the gap in the process that the transmission rod moves along the first direction.
In the technical scheme, the transmission assembly comprises a transmission rod, and the transmission rod penetrates through the fixed seat and can move in the through hole of the fixed seat; through setting up the mounting on the part that the transfer line stretches out the first end of fixing base for the transfer line is in to the first direction, also follow the first end of fixing base and remove the back to the second end place direction of fixing base, can drive the mounting and remove to the first end of fixing base, thereby promote by the mounting and expand tight cover and insert and press from both sides tightly in the clearance, compact structure is favorable to steadily promoting to expand tight cover moreover. In addition, when the transfer line stopped to remove, the mounting can effectively butt the tight cover that expands, avoids the tight cover that expands to shift out the clearance.
Optionally, the through hole of the fixing seat is in clearance fit with the transmission rod, so that the transmission rod can move in the fixing seat conveniently.
In any one of the above technical solutions, preferably, the tool fixture further includes: the reset piece is matched with the transmission rod and used for directly or indirectly pushing the expansion sleeve to move out of the gap at least partially to release the clamping state in the process that the transmission rod moves along the second direction; the first direction is opposite to the second direction.
In this technical scheme, frock clamp still includes the piece that resets, through the piece that resets with the transfer line mating reaction for stretch into the in-process of the through-hole of fixing base at the transfer line, also along the in-process that the second direction removed, the piece that resets can directly or indirectly push out the clearance with the at least part of the tight cover that expands, thereby relieves clamping state, expands this moment tight cover and treats there is the clearance between the machined part, is favorable to dismantling and treats the machined part, avoids appearing the card phenomenon of dying.
In any of the above technical solutions, preferably, the reset member is an insertion rod, the transmission rod is provided with a first mounting hole, the fixing seat is provided with a second mounting hole, and the insertion rod is inserted into the first mounting hole and the second mounting hole; and in the process that the transmission rod moves along the second direction, the inserted rod is used for moving relative to the second mounting hole under the pushing of the wall of the first mounting hole.
In this technical scheme, set for first piece that resets to the inserted bar, through running through the inserted bar first mounting hole on the transfer line, and run through the second mounting hole on the fixing base, make the in-process that the transfer line removed, can drive the inserted bar through the pore wall of first mounting hole and remove in the second mounting hole, drive the inserted bar and take place relative movement with the fixing base, thereby at the in-process that the transfer line removed along the second direction, the accessible inserted bar promotes tight cover of expanding at least part and shifts out the clearance, moreover, the steam generator is simple in structure, and space is saved, and convenient operation.
In any one of the above technical solutions, preferably, the tool fixture further includes: the sliding sleeve is sleeved on the fixed seat, a third mounting hole is formed in the sliding sleeve, and the inserted link is also inserted into the third mounting hole; the sliding sleeve is used for pushing the expansion sleeve to move under the driving of the inserted bar.
In this technical scheme, establish the sliding sleeve through the cover on the fixing base to make the inserted bar still insert and establish in the third mounting hole of sliding sleeve, make the in-process that the inserted bar removed, can drive the sliding sleeve and remove for the fixing base, and then the accessible sliding sleeve promotes at least part of the tight cover that expands and shifts out the clearance. Optionally, after the workpiece to be machined is mounted on the fixing seat, the sliding sleeve is also sleeved with the workpiece to be machined, the sliding sleeve is favorable for supporting the workpiece to be machined, and the mounting stability of the workpiece to be machined is improved.
Optionally, the sliding sleeve is movably sleeved on the fixed seat, a limiting end face is arranged on the outer peripheral face of the fixed seat, the sliding sleeve can be driven to move until the sliding sleeve abuts against the limiting end face in the process that the inserted rod moves along the first direction, and at the moment, the fixing piece pushes the expansion sleeve to be inserted into and clamped in the gap.
In any of the above technical solutions, preferably, the transmission assembly further includes: and the O-shaped ring is sleeved on the inserted rod and is used for contacting with the workpiece to be machined.
In the technical scheme, the O-shaped ring is arranged on the outer peripheral surface of the inserted rod, and the O-shaped ring is in contact with the workpiece to be machined, so that the contact surface area between the tool clamp and the workpiece to be machined is increased, the workpiece to be machined is stably sleeved on the fixing seat, and the inserted rod is sleeved with the workpiece to be machined, and the installation stability of the workpiece to be machined is improved.
In any one of the above technical solutions, preferably, the tool fixture further includes: a connector; the floating connecting piece is connected with the connector, an accommodating cavity is arranged inside the floating connecting piece, and an assembling hole is formed in one end face of the floating connecting piece; one end of the transmission rod is provided with a limiting bulge, the limiting bulge is arranged in the accommodating cavity, the other end of the transmission rod extends out of the assembly hole, and the part of the transmission rod extending into the assembly hole is in clearance fit with the assembly hole; wherein, the connector moves to drive the floating connecting piece and the transmission rod to move.
In this technical scheme, frock clamp includes connector and unsteady connecting piece, and the connecting piece that floats is connected with the connector to can remove under the drive of connector. The floating connecting piece is internally provided with a containing cavity, the floating connecting piece is also provided with an assembling hole communicated with the containing cavity, and the transmission rod can be effectively prevented from separating from the floating connecting piece by arranging a limiting bulge at one end of the transmission rod and arranging the limiting bulge in the containing cavity. In addition, the part of the transmission rod extending into the transfer hole is in clearance fit with the assembly hole, so that the connector can be accurately and quickly inserted into the through hole of the fixed seat when the transmission rod is driven to be inserted into the through hole of the fixed seat by the connector, and the phenomenon that the floating connecting piece is fixedly connected with the transmission rod to cause that the transmission rod cannot be inserted into the fixed seat due to incomplete alignment or machining errors is avoided.
In any one of the above technical solutions, preferably, the second end of the fixing seat is provided with an accommodating groove, and the floating connecting piece is disposed in the accommodating groove. And under the condition that the floating connecting piece moves to abut against the groove wall of the accommodating groove along the second direction, the expansion sleeve moves out of the gap at least partially to release the clamping state.
In this technical scheme, set up the holding tank through the second end at the fixing base, will float the connecting piece and set up in the holding tank, reduced frock clamp's occupation space, compact structure. In addition, the expansion sleeve is moved out of the gap at least partially to release the clamping state under the condition that the floating connecting piece moves to abut against the fixed seat along the second direction and specifically abuts against the groove wall of the accommodating groove, so that when the workpiece to be machined is disassembled, the transmission rod is controlled to move in place, and the disassembling efficiency is improved.
In any one of the above technical solutions, preferably, a groove wall of the receiving groove includes a step surface, and the outer periphery of the floating connection member is provided with a first annular protrusion for abutting against the step surface.
In the technical scheme, the first annular bulge is arranged on the periphery of the floating connecting piece, and the first annular bulge is abutted against the step surface, so that the floating connecting piece is ensured to move stably.
In any of the above technical solutions, preferably, one end of the connector extends into the floating connector and is in threaded connection with the floating connector; the limiting bulge is a second annular bulge, and the outer diameter of the second annular bulge is larger than the diameter of the assembling hole.
In this technical scheme, optionally, the tip that the connector stretched into in the connector that floats is inconsistent with the transfer line, avoids the transfer line to rock excessively for the connector that floats, also can leave the clearance between the two certainly. In addition, the limiting bulges are arranged to be the second annular bulges, the outer diameters of the second annular bulges are set to be larger than the diameter of the assembling hole, and the transmission rod is prevented from falling off from the floating connecting piece while the connection stability of the transmission rod and the floating connecting piece is improved.
In any of the above technical solutions, preferably, the workpiece to be machined is a rotor of an electric motor.
In this technical scheme, fix the rotor of motor through frock clamp, can be the rotor of motor in the compressor, the installation accuracy is high, and location effect is good, and the clamping is firm, especially to compressor rotor external diameter turning process, can ensure that the rotor excircle beats for a short time, and the external diameter size is stable, can regard as the frock clamp that is used for the external diameter precision finishing of rotor.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of a tooling fixture for expanding a workpiece to be machined according to an embodiment of the present invention;
FIG. 2 is a schematic view of a fixing base according to an embodiment of the present invention;
FIG. 3 is another schematic view of the mounting base of the embodiment of the present invention;
FIG. 4 shows a schematic structural view of an expansion sleeve of one embodiment of the present invention;
FIG. 5 is a schematic view showing the expanded structure of the expansion sleeve according to the embodiment of the present invention;
FIG. 6 shows a schematic structural view of a transmission rod of one embodiment of the present invention;
fig. 7 shows a schematic structural diagram of a connecting head according to an embodiment of the invention;
fig. 8 is another schematic structural diagram of a connecting head according to an embodiment of the invention;
FIG. 9 shows a schematic structural view of a floating coupling of an embodiment of the present invention;
FIG. 10 shows another schematic representation of the floating connector of one embodiment of the present invention;
fig. 11 is a schematic view showing a structure of a work fixture in which an expansion sleeve is in a relaxed state according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 11 is:
10 fixed seats, 102 a first end, 104 a circular table part, 106 a second end, 108 a second mounting hole, 110 a receiving groove, 112 a limit end surface, 12 a workpiece to be machined, 122 an inner hole, 14 an expansion sleeve, 142 a body, 144 a notch, 146 a through hole, 16 a fixing part, 18 a transmission rod, 182 a first mounting hole, 184 a limit bulge, 20 an inserted rod, 22 a sliding sleeve, 222 a third mounting hole, 24O-rings, 26 connectors, 28 a floating connecting piece, 282 a receiving cavity, 284 an assembling hole, 30 a pull rod and 32 machining equipment.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
A tooling fixture according to some embodiments of the present invention is described below with reference to fig. 1-11.
As shown in fig. 1, a first aspect of the present invention provides a tool holder, including: the first end 102 of the fixed seat 10 is used for extending into the inner hole 122 of the workpiece 12 to be machined, and a gap is reserved between the first end 102 of the fixed seat 10 and the inner hole 122 of the workpiece 12 to be machined; the second end 106 of the holder 10 faces away from the first end 102; and the expansion sleeve 14 is detachably connected with the fixed seat 10, and the expansion sleeve 14 is used for being inserted and clamped in the gap.
The tool clamp provided by the invention can be used for processing the excircle of the rotor, can ensure that the joint length of the tool clamp and the inner hole 122 of the rotor is prolonged to the maximum extent while the inner hole 122 of the rotor is uniformly stressed, ensures the rigid support of the rotor, has the advantages of good stability of the excircle runout of the rotor and the like, and is suitable for processing the excircle with high precision of the workpiece 12 to be processed. Specifically, the workpiece 12 to be machined is sleeved on the first end 102 of the fixed seat 10, and the expansion sleeve 14 is inserted into a gap between the fixed seat 10 and the inner hole 122 of the workpiece 12 to be machined and clamped in the gap, so that the workpiece 12 to be machined can be stably installed on the tool clamp, and the machining precision of the workpiece 12 to be machined is ensured. Insert whole clearance and the tight in the clearance through the tight cover 14 that will expand, make the tight cover 14 that expands that is located the clearance all receive the fixing base 10 everywhere and treat the extrusion of machined part 12 hole 122, make the tight cover 14 that expands can evenly expand tightly, be favorable to treating the even atress in hole 122 each department of machined part 12, ensure to expand tight cover 14 and treat closely laminating between the machined part 12 hole 122, ensure frock clamp and the cooperation length of the hole 122 of treating machined part 12, be favorable to guaranteeing to treat the machining precision of machined part 12. Compared with the prior art that a mandrel is required to be inserted into a hollow structure, the elastic sheet is wound from the end part to the root part to deform and be attached to the rotor, the rotor is fixed by the fixing seat 10 and the expansion sleeve 14, the attachment length of the tool clamp and the rotor is prolonged, the stress on each part of the inner hole 122 of the rotor is uniform, the jumping processing deviation caused by deflection deformation of the tool clamp due to cutting force is reduced, and the processing precision of the excircle of the rotor can be effectively guaranteed. Of course, the member 12 to be machined is not limited to the rotor of an electric motor, and may be other components having the inner bore 122.
In addition, through can dismantling the connection with fixing base 10 the tight cover 14 that will expand, can effectively avoid fixing base 10 and the tight cover 14 integrated into one piece that expands, and lead to the tight cover 14 that expands to expand behind the hole 122 of treating machined part 12, when external force messenger treats that machined part 12 shifts out the frock clamp, destroy the tight cover 14 that expands and lead to fixing base 10, whole frock clamp is scrapped even, only need change the tight cover 14 that expands can. Moreover, the replacement of the expansion sleeve 14 is convenient, the expansion sleeve 14 is prevented from weakening the expansion effect after being used for a long time, the whole tool clamp does not need to be replaced, and the cost is saved.
The first end 102 of the fixing base 10 can be a free end, which facilitates the rotor to be sleeved on the fixing base 10, and the second end 106 of the fixing base 10 can be fixed on the processing equipment 32 of the workpiece 12 to be processed, such as a lathe, a grinding machine, a numerical control machine, and the like. When the workpiece 12 to be machined is fixed, the workpiece 12 to be machined can be sleeved on the fixed seat 10, then the expansion sleeve 14 is sleeved on the fixed seat 10, and the expansion sleeve 14 is pushed to move towards the gap between the fixed seat 10 and the workpiece 12 to be machined and expand in the gap; the expansion sleeve 14 can be sleeved on the fixed seat 10, and then the workpiece 12 to be machined is sleeved on the fixed seat 10, at this time, the expansion sleeve 14 can be in a relaxed state without extending into the gap or completely extending into the gap, and then the expansion sleeve 14 is pushed to be inserted into the gap and is in a clamped state under the extrusion of the fixed seat 10 and the hole wall of the inner hole 122 of the workpiece 12 to be machined; the expansion sleeve 14 can also be movably sleeved on the fixed seat 10 in advance, and when the workpiece 12 to be machined needs to be fixed, the workpiece 12 to be machined can be sleeved on the fixed seat 10. In a clamping state, the expansion sleeve 14 expands and is fastened on the fixed seat 10; when the clamping state is released, the expansion sleeve 14 is released, and the expansion sleeve 14 is movably sleeved on the fixed seat 10. Alternatively, the holder 10 is fixed to a processing device 32, such as a lathe body, by bolts or screws.
In the present application, the expansion sleeve 14 is made of an elastic material, such as rubber, and can be deformed by pressure and expanded in the gap, and the expansion sleeve 14 has a sleeve-shaped structure with a through interior.
In some embodiments, as shown in fig. 2-5, the anchor block 10 includes a boss 104 at the first end 102 thereof, the boss 104 being retractable away from the second end 106 of the anchor block 10, the first end 102 of the anchor block 10 being disposed opposite the second end 106 thereof; the inner surface of the expansion sleeve 14 is a tapered surface for engaging the outer surface of the boss 104.
In this embodiment, by setting the fixing base 10 to include the circular boss 104 at the first end 102, the circular boss 104 is contracted away from the second end 106 of the fixing base 10, and the first end 102 of the fixing base 10 is distributed opposite to the second end 106 thereof, which is beneficial to quickly insert the expansion sleeve 14 into the gap on one hand, and to quickly sleeve the workpiece 12 to be machined on the circular boss 104 from the direction of the first end 102 on the other hand. In addition, by setting the inner surface of the expansion sleeve 14 to be a conical surface, and attaching the inner surface of the expansion sleeve 14 to the outer surface of the circular table portion 104, the expansion sleeve 14 can be radially and uniformly expanded along the outer peripheral surface of the circular table portion 104 in the expansion process, which is beneficial to closely attaching the expansion sleeve 14 to the workpiece 12 to be machined, and improves the clamping stability of the workpiece 12 to be machined.
Alternatively, the outer peripheral surface of the boss portion 104 is parallel to the tapered surface, and the taper angle of the outer peripheral surface of the boss portion 104 is fitted to the inner surface of the expansion sleeve 14. Specifically, the taper angle of the outer peripheral surface of the circular truncated cone portion 104 is θ 1, for example, θ 1 is 3 degrees, the inside of the expansion sleeve 14 is similarly designed with a tapered surface having a taper angle of θ 2, and the engagement processing is performed when θ 1 and θ 2 are processed, in order to uniformly expand the expansion sleeve 14 in the radial direction along the outer peripheral surface of the circular truncated cone portion 104 during the expansion process.
In some embodiments, as shown in fig. 4 and 5, the expansion sleeve 14 includes a body 142 and a plurality of notches 144, the body 142 is a revolving body, the body 142 is sleeved on the fixing seat 10, and the plurality of notches 144 are disposed at two ends of the body 142. Further, a plurality of notches 144 are spaced circumferentially along the body 142.
In this embodiment, the setting expansion sleeve 14 includes a body 142 and a plurality of notches 144, each notch 144 is opened on an end surface of the body 142, and by distributing the plurality of notches 144 at two ends of the body 142, a sufficient space is provided for deformation of the body 142, which facilitates uniform expansion of the body 142 due to compression deformation, thereby facilitating uniform stress on the inner hole 122 of the workpiece 12 to be machined. Further, the plurality of gaps 144 are distributed at intervals along the circumferential direction of the body 142, so that the expansion uniformity of the body 142 is further ensured. The expansion sleeve 14 is integrally formed by a plurality of shaping sheets, and the shaping sheets are alternately connected end to end, so that the outer diameter of the expansion sleeve 14 is uniformly expanded when the expansion sleeve is expanded.
Optionally, each gap 144 extends for a length greater than half of the length of the body 142, and the length direction of the body 142 is the extension direction of the center line surrounded by the body 142. The outer surface defined by the shaping sheets is matched with the inner diameter of the workpiece 12 to be machined, and the inner surface defined by the shaping sheets has the same taper angle with the circular table part 104 of the fixed seat 10, so that expansion, namely clamping in the gap, and loosening in relative motion are realized. The number of the notches 144 is 8, and 4 notches 144 are distributed at each end of the body 142.
In some embodiments, as shown in fig. 4 and 5, the expansion sleeve 14 further includes a plurality of through holes 146, the plurality of through holes 146 are disposed on the body 142 and are distributed at one end of the plurality of gaps 144 extending into the body 142, and the plurality of through holes 146 are communicated with the plurality of gaps 144.
In this embodiment, through providing the through hole 146 at one end of each notch 144 extending into the body 142, and communicating the through hole 146 with the corresponding notch 144, when the body 142 is pressed and expanded, even if the notch 144 is deformed and expanded, the end of the notch 144 will not be torn due to the existence of the through hole 146, thereby prolonging the service life of the expansion sleeve 14.
In some embodiments, as shown in fig. 1 and 11, the tooling fixture further comprises: and the fixing piece 16 is positioned at the first end 102 of the fixing seat 10 and is used for abutting against the expansion sleeve 14.
In this embodiment, the fixing member 16 is disposed at the first end 102 of the fixing seat 10, and the fixing member 16 abuts against the expansion sleeve 14, so as to support the expansion sleeve 14 and prevent the expansion sleeve 14 from moving out of the gap. Wherein the fastener 16 may be disposed on the portion of the first end 102 of the fastener 16 that extends beyond the expansion sleeve 14, the fastener 16 may be disposed on other components that bear against the expansion sleeve 14. The fastener 16 is preferably a threaded member, such as a lock nut, that is tightened against the expansion sleeve 14 and secured.
In some embodiments, the fastener 16 is removably disposed on the portion of the first end 102 of the anchor block 10 that extends beyond the expansion sleeve 14.
In this embodiment, the fixing member 16 is detachably disposed on the portion of the first end 102 of the fixing base 10 extending out of the expansion sleeve 14, so that the expansion sleeve 14 can be abutted conveniently, the expansion sleeve 14 is prevented from being removed from the gap, and the expansion sleeve 14 can be pushed to extend into the gap during the process of being assembled on the fixing base 10.
In some embodiments, the tooling fixture further comprises: and the transmission assembly is detachably connected with the fixing piece 16 and is used for driving the fixing piece 16 to move, so that the fixing piece 16 pushes the expansion sleeve 14 to be inserted and clamped in the gap.
In this embodiment, by setting the tooling fixture to further include a transmission assembly, the transmission assembly directly or indirectly pushes the expansion sleeve 14 to be inserted into and clamped in the gap, so as to avoid the user from manually pushing the expansion sleeve 14, ensure that the expansion sleeve 14 is effectively inserted into the gap, and ensure that the expansion sleeve 14 is tightly attached to the inner hole 122 of the workpiece 12 to be machined. Specifically, the transmission assembly drives the fixing member 16 to move, so that the fixing member 16 pushes the expansion sleeve 14 to extend into the gap, and when the expansion sleeve 14 stops moving, the fixing member 16 is ensured to abut against the expansion sleeve 14, and the expansion sleeve 14 is effectively prevented from moving out of the gap.
In some embodiments, as shown in fig. 1 and 11, the transmission assembly comprises: the transmission rod 18 penetrates through the fixing seat 10 and can move in the through hole of the fixing seat 10; a fastener 16 is provided on the portion of the drive rod 18 extending beyond the first end 102 of the holder 10 for urging the expansion sleeve 14 into the gap during movement of the drive rod 18 in the first direction.
In this embodiment, the transmission assembly includes a transmission rod 18, the transmission rod 18 penetrates the fixing base 10 and can move in the through hole of the fixing base 10; by arranging the fixing element 16 on the portion of the transmission rod 18 extending out of the first end 102 of the fixing base 10, the transmission rod 18 can drive the fixing element 16 to move towards the first end 102 of the fixing base 10 after moving towards the first direction, i.e. from the first end 102 of the fixing base 10 to the second end 106 of the fixing base 10, so that the expansion sleeve 14 is pushed by the fixing element 16 to be inserted and clamped in the gap, the structure is compact, and smooth pushing of the expansion sleeve 14 is facilitated. In addition, when the transmission rod 18 stops moving, the fixing piece 16 can effectively abut against the expansion sleeve 14, and the expansion sleeve 14 is prevented from moving out of the gap. Furthermore, during the displacement of the transmission rod 18 in the second direction, i.e. opposite to the first direction, the fastening element 16 can be initially moved away from the expansion sleeve 14, leaving room for the displacement of the expansion sleeve 14.
Optionally, the through hole of the fixing base 10 is in clearance fit with the transmission rod 18, so that the transmission rod 18 can move in the fixing base 10 conveniently.
In some embodiments, as shown in fig. 1 and 11, the tooling fixture further comprises: a reset member cooperating with the driving rod 18 for directly or indirectly pushing the expansion sleeve 14 at least partially out of the gap to release the clamping state during the movement of the driving rod 18 in the second direction; the first direction is opposite to the second direction.
In this embodiment, the tooling fixture further includes a reset member, and the reset member cooperates with the transmission rod 18, so that in the process that the transmission rod 18 extends into the through hole of the fixing seat 10, that is, in the process of moving along the second direction, the reset member can directly or indirectly push out at least part of the expansion sleeve 14 from the gap, so as to release the clamping state, and at this time, a gap exists between the expansion sleeve 14 and the workpiece 12 to be machined, which is beneficial to detaching the workpiece 12 to avoid the occurrence of the clamping phenomenon.
In some embodiments, as shown in fig. 1 and 11, the restoring member is an inserting rod 20, the transmission rod 18 is provided with a first mounting hole 182, the fixing base 10 is provided with a second mounting hole 108, and the inserting rod 20 is inserted into the first mounting hole 182 and the second mounting hole 108; during the movement of the transmission rod 18 in the second direction, the insertion rod 20 is used to move relative to the second mounting hole 108 under the pushing of the wall of the first mounting hole 182.
In this embodiment, the first resetting member is set as the insert rod 20, the insert rod 20 penetrates through the first mounting hole 182 of the transmission rod 18 and penetrates through the second mounting hole 108 of the fixing seat 10, so that in the moving process of the transmission rod 18, the insert rod 20 can be driven to move in the second mounting hole 108 through the hole wall of the first mounting hole 182, the insert rod 20 and the fixing seat 10 are driven to move relatively, and therefore, in the moving process of the transmission rod 18 along the second direction, the expansion sleeve 14 can be pushed by the insert rod 20 to move out of the gap at least partially, and is in a relaxed state, so that the resetting action after the expansion of the fixture is realized, the structure is simple, the space is saved, and the operation is convenient. The plunger 20 may be a sliding sleeve 22 fixed key. The size of the plunger 20 is smaller than the size of the first mounting hole 182 and the second mounting hole 108, thereby structurally realizing the mobility of the sliding sleeve 22 after the clamp is expanded and reset.
Of course, the restoring member may also be integrally formed with the transmission rod 18, and formed on the periphery of the transmission rod 18, such as a protrusion, to push the expansion sleeve 14 to move.
In some embodiments, as shown in fig. 1 and 11, the tooling fixture further comprises: the sliding sleeve 22 is sleeved on the fixed seat 10, a third mounting hole 222 is formed in the sliding sleeve 22, and the inserted rod 20 is further inserted into the third mounting hole 222; the sliding sleeve 22 is used for driving the expansion sleeve 14 to move under the driving of the inserted rod 20.
In this embodiment, the sliding sleeve 22 is sleeved on the fixed seat 10, and the insertion rod 20 is further inserted into the third mounting hole 222 of the sliding sleeve 22, so that during the movement of the insertion rod 20, the sliding sleeve 22 can be driven to move relative to the fixed seat 10, and further at least a part of the expansion sleeve 14 can be pushed to move out of the gap by the sliding sleeve 22. Optionally, after the workpiece 12 to be processed is mounted on the fixing seat 10, the sliding sleeve 22 is also sleeved with the workpiece 12 to be processed, and the sliding sleeve 22 is favorable for supporting the workpiece 12 to be processed, so that the mounting stability of the workpiece 12 to be processed is improved.
Optionally, the sliding sleeve 22 is movably sleeved on the fixed seat 10, a limiting end surface 112 is arranged on the outer peripheral surface of the fixed seat 10, and the sliding sleeve 22 can be driven to move until the sliding sleeve 22 abuts against the limiting end surface 112 in the process that the inserted rod 20 moves along the first direction; at this time, the fixing member 16 pushes the expansion sleeve 14 to insert and clamp in the gap, so that the transmission rod 18 stops moving, or the transmission rod 18 continues moving, so that the expansion sleeve 14 is expanded to the clamping force required by the workpiece 12 to be machined, and the expansion stroke is finished.
Further, the diameter of the third mounting hole 222 is precisely matched with the outer diameter of the plunger 20.
In some embodiments, as shown in fig. 1 and 11, the transmission assembly further comprises: and the O-shaped ring 24 is sleeved on the insert rod 20 and is used for contacting with a workpiece to be machined.
In this embodiment, the O-ring 24 is disposed on the outer peripheral surface of the insertion rod 20, and the O-ring 24 contacts with the workpiece to be processed, so that the contact surface area between the tooling fixture and the workpiece 12 to be processed is increased, the workpiece 12 to be processed is stably sleeved on the fixing seat 10 and on the insertion rod 20, and the installation stability of the workpiece 12 to be processed is improved.
In some embodiments, as shown in fig. 1, 6 to 10, the tooling fixture further includes: a connector 26; the floating connector 28 is connected with the connector 26, the floating connector 28 is internally provided with a containing cavity 282, and one end surface of the floating connector 28 is provided with an assembling hole 284; one end of the transmission rod 18 is provided with a limiting protrusion 184, the limiting protrusion 184 is arranged in the accommodating cavity 282, the other end of the transmission rod 18 extends out of the assembly hole 284, and the part of the transmission rod 18 extending into the assembly hole 284 is in clearance fit with the assembly hole 284; wherein the connecting head 26 moves to move the floating connecting member 28 and the transmission rod 18.
In this embodiment, the tooling fixture includes a connecting head 26 and a floating connector 28, wherein the floating connector 28 is connected to the connecting head 26 and can move under the driving of the connecting head 26. The floating connection member 28 is provided with a receiving cavity 282 therein, and the floating connection member 28 is further provided with an assembling hole 284 communicated with the receiving cavity 282, so that the transmission rod 18 can be effectively prevented from being separated from the floating connection member 28 by providing a limit protrusion 184 at one end of the transmission rod 18 and disposing the limit protrusion 184 in the receiving cavity 282. In addition, the part of the transmission rod 18 extending into the transfer hole is in clearance fit with the assembly hole 284, so that the transmission rod 18 has certain mobility, the coaxiality between the transmission rod 18 and the through hole of the fixed seat 10 is ensured when the transmission rod extends and contracts, the connection head 26 is favorable for accurately and quickly inserting the transmission rod 18 into the through hole of the fixed seat 10, and the phenomenon that the transmission rod 18 cannot be inserted into the fixed seat 10 due to incomplete alignment or processing errors caused by the fixed connection between the floating connecting piece 28 and the transmission rod 18 is avoided.
Alternatively, the coupling head 26 is connected to a lathe tie rod 30, and the coupling head 26 is pulled to move by the lathe tie rod 30. Further, the connector 26 is threadedly connected to the pull rod 30. The part of the floating connecting piece 28 facing the first end 102 of the fixed seat 10 is hexagonal prism-shaped, so that the hexagonal prism part can be grabbed to disassemble and assemble the floating connecting piece 28. The connector 26 is connected with a floating connector 28 to transmit the stretching and retracting force of the pull rod 30 and realize the expansion and the release of the expansion sleeve 14 on the workpiece 12 to be processed. Four open slots are formed in the circumferential direction of the floating connecting piece 28, and are distributed in a cross shape, so that the floating connecting piece can be conveniently detached and installed. The floating connection 28 is clearance fitted to the drive rod 18 both axially and radially.
As shown in fig. 6 and 9, the diameter of the mounting hole 284 of the floating connection member 28 can be set to D1, and the outer diameter of the portion of the driving rod 18 that is inserted into the mounting hole 284 is D2, for example, D1-D2 is 0.4mm, so that the clearance is set to allow the floating connection member 28 to function as a movable connection shaft, so that the driving rod 18 has a certain mobility, and the coaxiality with the fixed seat 10 is ensured when the tie rod 30 of the lathe is extended and retracted. In addition, as shown in fig. 2, the diameter of the through hole of the fixing seat 10 is D3, for example, D3-D2 is 0.02mm, which ensures the coaxiality of the transmission rod 18 and the fixing seat 10, thereby achieving the precise positioning of the transmission rod 18 in the fixing seat 10.
In some embodiments, as shown in fig. 1 and 2, the second end 106 of the holder 10 is provided with a receiving groove 110, and the floating connector 28 is disposed in the receiving groove 110. In the event that the floating connector 28 is moved in the second direction into abutment with the groove walls of the receiving groove 110, the expansion sleeve 14 moves at least partially out of the gap and the clamped state is released.
In this embodiment, the accommodating groove 110 is formed at the second end 106 of the fixing seat 10, and the floating connection member 28 is disposed in the accommodating groove 110, so that the occupied space of the tool clamp is reduced, and the structure is compact. In addition, by setting the floating connection member 28 to move along the second direction to abut against the fixed seat 10, specifically to abut against the groove wall of the accommodating groove 110, the expansion sleeve 14 moves out of the gap at least partially to release the clamping state, which is beneficial to controlling the transmission rod 18 to move in place when the workpiece 12 to be machined is disassembled, and improving the disassembling efficiency.
In some embodiments, the groove wall of the receiving groove 110 includes a step surface, and the outer periphery of the floating connector 28 is provided with a first annular projection for abutting against the step surface.
In this embodiment, by providing the first annular projection on the outer periphery of the floating connection member 28, the floating connection member 28 is ensured to move smoothly by the first annular projection abutting against the step surface.
In some embodiments, as shown in fig. 1, 7-10, one end of the connector 26 extends into the floating connector 28 and is threadably connected to the floating connector 28; the stop protrusion 184 is a second annular protrusion having an outer diameter greater than the diameter of the mounting hole 284.
In this embodiment, the end of the connecting head 26 that protrudes into the floating connection 28 optionally abuts the transmission rod 18, avoiding excessive wobbling of the transmission rod 18 relative to the floating connection 28, although a gap may be left between the two. In addition, the limiting protrusion 184 is a second annular protrusion, and the outer diameter of the second annular protrusion is larger than the diameter of the assembling hole 284, so that the transmission rod 18 can be prevented from falling out of the floating connection member 28 while the connection stability of the transmission rod 18 and the floating connection member 28 is improved.
In some embodiments, the part 12 to be machined is a rotor of an electric motor.
In the embodiment, the rotor of the motor can be fixed by the tool clamp, the rotor of the motor in the compressor can be fixed, the coaxiality is guaranteed well, the mounting precision is high, the positioning effect is good, the clamping is stable, and the use cost is low; particularly, aiming at the turning process of the outer diameter of the compressor rotor, the outer diameter of the rotor can be ensured to have small jumping and stable outer diameter size, and the fixture can be used as a tool fixture for precisely processing the outer diameter of the rotor and is suitable for processing the workpiece 12 to be processed with high precision required by the outer diameter.
The working process of the tool clamp according to one embodiment of the invention is described in detail as follows:
and (3) expansion process: the frock clamp includes: a connector 26 connected with a pull rod 30 of the lathe, and a floating connector 28 connected with the connector 26; the floating connection 28 has a movement stroke in the structure in the fixed seat 10; when the pull rod 30 is extended to move the floating connection member 28 to the step surface of the fixed seat 10, the extension action is finished, and the expansion sleeve 14 is in a relaxed state, as shown in fig. 11;
the rotor is sleeved on the expansion sleeve 14 along the axial direction;
then, the expansion sleeve 14 is movably fixed on the fixed seat 10 through the fixing piece 16; when the pull rod 30 retracts, the fixing member 16 pushes the expansion sleeve 14 to move along the first direction, and drives the sliding sleeve 22 to move along the first direction, because the fixing seat 10 and the expansion sleeve 14 are matched by adopting an oblique conical surface, the outer diameter of the expansion sleeve 14 is uniformly expanded along the outer peripheral surface of the circular table portion 104 in the radial direction, the outer diameter of the expansion sleeve 14 contacts the inner diameter of the rotor which is clamped on the surface of the expansion sleeve 14 in advance in the expansion process, so that the expansion sleeve 14 gradually expands the inner diameter of the rotor, and the expansion stroke is finished, as shown in fig. 1.
Then, a program of the numerical control lathe can be started to carry out excircle processing on the rotor;
resetting: firstly, the fixing piece 16 is moved to reserve a moving space of the expansion sleeve 14; then, the thrust is transmitted to the sliding sleeve 22 through the inserting rod 20, and finally acts on the expansion sleeve 14, so that the conical surface of the expansion sleeve 14, which is attached to the fixed seat 10, is separated, as shown in fig. 11, and the reset action of the tool clamp after expansion is realized.
Subsequently, the finished rotor can be easily taken out; thus, a cycle of machining is completed.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (14)
1. The utility model provides a frock clamp which characterized in that includes:
the first end of the fixed seat is used for extending into an inner hole of a workpiece to be machined, and a gap is reserved between the first end of the fixed seat and the inner hole of the workpiece to be machined; the second end of the fixed seat deviates from the first end;
the expansion sleeve is detachably connected with the fixed seat and is used for being inserted and clamped in the gap;
frock clamp still includes:
the transmission assembly is used for pushing the expansion sleeve to be inserted into and clamped in the gap;
the transmission assembly includes:
a drive link movable in a first direction to push the expansion sleeve to insert into the gap;
the frock clamp still includes:
the reset piece is matched with the transmission rod and used for directly or indirectly pushing the expansion sleeve to move out of the gap at least partially to release the clamping state in the process that the transmission rod moves along the second direction, and the reset piece is an inserted rod;
the first direction is opposite the second direction;
the frock clamp still includes:
the sliding sleeve is sleeved on the fixed seat, a third mounting hole is formed in the sliding sleeve, and the inserted rod is inserted into the third mounting hole;
the sliding sleeve is used for pushing the expansion sleeve to move under the driving of the inserted rod, the workpiece to be machined is sleeved on the sliding sleeve, and the sliding sleeve is also used for supporting the workpiece to be machined;
the frock clamp still includes:
a connector;
the floating connecting piece is connected with the connector, an accommodating cavity is arranged inside the floating connecting piece, and an assembling hole is formed in one end face of the floating connecting piece;
one end of the transmission rod is provided with a limiting bulge, the limiting bulge is arranged in the accommodating cavity, the other end of the transmission rod extends out of the assembling hole, and the part of the transmission rod extending into the assembling hole is in clearance fit with the assembling hole;
wherein, the connector removes to drive the connecting piece that floats, the transfer line removes.
2. The tool clamp of claim 1,
the fixing seat comprises a circular table part positioned at the first end of the fixing seat, the circular table part shrinks towards the direction far away from the second end of the fixing seat, and the first end and the second end of the fixing seat are distributed oppositely;
the inner surface of the expansion sleeve is a conical surface, and the conical surface is used for being attached to the outer surface of the circular table portion.
3. The tooling fixture of claim 1 or 2,
the expansion sleeve comprises a body and a plurality of gaps, the body is a revolving body, the body is sleeved on the fixed seat, and the plurality of gaps are arranged at two ends of the body;
wherein, a plurality of breach is followed the circumference interval distribution of body.
4. The tool clamp of claim 3,
the expansion sleeve further comprises a plurality of through holes, the through holes are formed in the body and distributed at one end, extending into one end of the body, of each notch, and the through holes are communicated with the notches.
5. The tooling fixture of claim 1 or 2, further comprising:
and the fixing piece is positioned at the first end of the fixing seat and is used for abutting against the expansion sleeve.
6. The tool clamp of claim 5,
the fixing piece is detachably arranged on the part of the first end of the fixing seat extending out of the expansion sleeve.
7. The tooling clamp of claim 5, wherein the transmission assembly is detachably connected to the fixing member and is configured to drive the fixing member to move, so that the fixing member pushes the expansion sleeve to be inserted into and clamped in the gap.
8. The tool clamp of claim 7,
the transmission rod penetrates through the fixed seat and can move in the through hole of the fixed seat;
the fixing piece is arranged on the part, extending out of the first end of the fixed seat, of the transmission rod and used for pushing the expansion sleeve to be inserted into the gap in the process that the transmission rod moves along the first direction.
9. The tool clamp of claim 1,
the transmission rod is provided with a first mounting hole, the fixed seat is provided with a second mounting hole, and the inserted rod is inserted into the first mounting hole and the second mounting hole;
in the process that the transmission rod moves along the second direction, the inserted link is used for moving relative to the second mounting hole under the pushing of the wall of the first mounting hole.
10. The tool clamp of claim 9,
the transmission assembly further includes:
and the O-shaped ring is sleeved on the inserted rod and is used for contacting the workpiece to be machined.
11. The tool clamp of claim 1,
the second end of the fixed seat is provided with an accommodating groove, and the floating connecting piece is arranged in the accommodating groove;
and under the condition that the floating connecting piece moves to abut against the groove wall of the accommodating groove along the second direction, the expansion sleeve moves out of the gap at least partially to release the clamping state.
12. The tool holder of claim 11,
the cell wall of holding tank includes the step face, the periphery of floating the connecting piece is equipped with first annular arch, first annular arch be used for with step face looks butt.
13. The tool clamp of claim 1,
one end of the connector extends into the floating connecting piece and is in threaded connection with the floating connecting piece;
the limiting bulge is a second annular bulge, and the outer diameter of the second annular bulge is larger than the diameter of the assembling hole.
14. The tooling fixture of claim 1 or 2,
the workpiece to be machined is a rotor of a motor.
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| CN201910286151.0A CN111805277B (en) | 2019-04-10 | 2019-04-10 | Work fixture |
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| CN201910286151.0A CN111805277B (en) | 2019-04-10 | 2019-04-10 | Work fixture |
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| CN111805277B true CN111805277B (en) | 2022-08-09 |
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| CN116944535A (en) * | 2023-09-20 | 2023-10-27 | 万向钱潮股份公司 | Positioning tool and turning method of workpiece |
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| CN206824687U (en) * | 2017-05-23 | 2018-01-02 | 扬州伟光机械制造有限公司 | A kind of shaping mould inner hole of workpiece zero-clearance locating processor structure |
| CN207756940U (en) * | 2017-07-27 | 2018-08-24 | 麦克奥迪（厦门）电气股份有限公司 | A kind of thin-wall barrel turning clamp |
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| CN111805277A (en) | 2020-10-23 |
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