CN209565818U - A kind of brake-shoe Excircle machining fixture - Google Patents
A kind of brake-shoe Excircle machining fixture Download PDFInfo
- Publication number
- CN209565818U CN209565818U CN201920065755.8U CN201920065755U CN209565818U CN 209565818 U CN209565818 U CN 209565818U CN 201920065755 U CN201920065755 U CN 201920065755U CN 209565818 U CN209565818 U CN 209565818U
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- Prior art keywords
- brake
- rotary table
- shoe
- fixed rotary
- positioning core
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Abstract
The utility model relates to auto parts and components clamp for machining technical fields, specifically, it is related to a kind of brake-shoe Excircle machining fixture, it include rotation machine table, positioning core axle, lower fixed rotary table and upper fixed rotary table, rotation machine table is disc-shape, the first mounting hole for rotating machine table disc face is run through there are two being respectively provided in the two sides of rotation machine table vertically, positioning core axle is fixedly mounted in the first mounting hole, lower fixed rotary table and upper fixed rotary table are set on positioning core axle, the taper end of lower fixed rotary table is arranged upward, the taper end of upper fixed rotary table is arranged downward, the fixture can once fix and two brake-shoes of simultaneous processing, the end face of brake-shoe is not contacted with fixture, solve the problems, such as that brake-shoe end face injustice will cause the reduction of periphery machining accuracy, the location hole of brake-shoe is clipped in the middle by upper and lower two fixed rotary tables, solves system The problem of location hole and positioning core axle clearance fit of dynamic hoof tremble when brake-shoe being caused to process.
Description
Technical field
The utility model relates to auto parts and components clamp for machining technical fields, and in particular, to a kind of brake-shoe outer circle adds
Clamping apparatus.
Background technique
Brake shoe iron belongs to automobile brake parts technical field, includes web and wing plate, the arc of wing plate and web
Periphery connection.For wrapping up friction plate, keep the positioning of friction plate more acurrate.
With the development of society, automobile increases, traffic safety problem also becomes increasingly conspicuous.As caused by vehicle problem itself
In traffic accident, traffic accident caused by braking system faults reaches the 45% of total number of accident.Therefore, designing and manufacturing for brake is improved
Level has very important realistic meaning.At present in automotive brake drum brake be automobile main brake kind it
One.Block brake is also in shoe type braking, is to be compressed on the brake wheel by brake block to realize brake.
Currently, the boring jig of brake shoe iron processing need to provide one kind more because clamping dynamics deficiency, the shortcoming of stability
Excellent fixture is to solve problem above.
Chinese patent CN206702628U discloses a kind of brake-shoe Excircle machining fixture.A kind of brake-shoe Excircle machining folder
Tool, including chuck body, cam hole positioning core axle and shoe bores positioning core axle, the cam hole positioning core axle and shoe bores positioning
Mandrel one end is equipped with fixing end, and the other end is equipped with positioning end, and the chuck body side is equipped at least one cam hole locating core
Axis and at least one shoe bores positioning core axle are equipped at the chuck body center and compress mandrel, the cam hole positioning core axle,
Shoe bores positioning core axle and compression mandrel are all located at the same side of chuck body.A kind of brake-shoe Excircle machining of the utility model
Fixture can be improved work efficiency, and this fixture locking is functional with two brake-shoes of simultaneous processing, smart structural design and
It is easily operated.
The brake-shoe fixture of the patent disclosure has the disadvantage that
1. the fixture positions two holes of brake-shoe by two mandrels, then by compressing a compression spiral shell on mandrel
Bar pushes down two brake-shoes simultaneously；Since the processing technology of brake-shoe is first turning face, one end face of rear car, so outer in processing
When disc, the both ends of the surface of brake-shoe are not yet processed, or only machined an end face, and the thickness of two brake-shoes is not at this time
Certain identical, two end faces are also not necessarily parallel；When two brake-shoes are placed on the same fixture, the two brake-shoes
Apical side height is different and not necessarily parallel, so being easy to appear it when pushing down two brake-shoes simultaneously by a pressing plate
In a brake-shoe compressed and the problem of another brake-shoe does not compress.
2. the periphery of brake-shoe is first of manufacturing procedure, so when processing brake-shoe periphery, brake-shoe
Shoe bores are not yet processed with cam hole, so and must need to protect with shoe bores and cam hole clearance fit by positioning core axle
Certain surplus is stayed, during otherwise shoe bores and cam hole possibly can not be tucked on positioning core axle；It is processed in brake-shoe periphery
When, brake-shoe may generate vibration because of the gap between shoe bores and cam hole and positioning core axle, cause to process
Precision is low possibly even to damage milling cutter.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of brake-shoe Excircle machining fixture, which can be primary
Fixed and two brake-shoes of simultaneous processing, the end face of brake-shoe are not contacted with fixture, and solving brake-shoe end face injustice will cause
The problem of periphery machining accuracy reduces, the location hole of brake-shoe is clipped in the middle by upper and lower two fixed rotary tables, solves system
The problem of location hole and positioning core axle clearance fit of dynamic hoof tremble when brake-shoe being caused to process.
A kind of brake-shoe Excircle machining fixture disclosed by the utility model includes rotation machine table, positioning core axle, lower solid
Determine rotary table and upper fixed rotary table, rotation machine table is disc-shape, and the two sides for rotating machine table are respectively provided with that there are two run through vertically
The first mounting hole of machine table disc face is rotated, positioning core axle is fixedly mounted in the first mounting hole, and positioning core axle and rotation add
Work platform is vertical and is respectively positioned on the same side of rotation machine table, two equal clearance fits of location hole of positioning core axle and brake-shoe,
It is provided with the through-hole with positioning core axle transition fit at lower fixed rotary table axle center, is provided with and positions at the axle center of upper fixed rotary table
The threaded hole of mandrel thread cooperation, lower fixed rotary table and upper fixed rotary table be set on positioning core axle, lower fixed rotary table it is thin
End is arranged upward, and the taper end of upper fixed rotary table is arranged downward, and the taper end diameter of lower fixed rotary table and upper fixed rotary table, which is respectively less than, to be made
The aperture of dynamic hoof location hole；
Under working condition, two location holes of brake-shoe are respectively sleeved on two positioning core axles, and lower fixed rotary table is located at
The lower section of brake-shoe, upper fixed rotary table are located at the top of brake-shoe, and the circular conical surface of lower fixed rotary table and upper fixed rotary table is connected to
The positioning bore edges of brake-shoe.
Preferably, under working condition, two brake-shoes are fixedly mounted on positioning core axle, and two brake-shoes is outer at this time
Disc is arranged outwardly, and projection of the periphery of two brake-shoes in rotation machine table is overlapped with the same positive round.
Preferably, it rotates in machine table and is also equipped with bushing, bushing is fixedly mounted in each first mounting hole, bushing packet
Plunger is included, plunger is cylinder, the periphery of plunger and the first mounting hole transition fit, is provided on plunger vertically through it
The through-hole of top surface and bottom surface, the through-hole and positioning core axle transition fit, the hardness of plunger are less than the hardness of rotation machine table.
Preferably, the bottom end of plunger is provided with the collar flange extended horizontally outward, and collar flange is connected to rotation processing
On the bottom surface of platform.
Preferably, positioning core axle is multi-diameter shaft, positioning core axle include the column body being arranged from top to bottom, middle column body and under
Cylinder, column body is identical as lower prop diameter, and the diameter of middle column body is greater than the diameter of column body or lower prop, middle column body and braking
The location hole clearance fit of hoof is provided with external screw thread on lower prop；
Lower fixed rotary table is set on lower prop, and upper fixed rotary table is set in column body, lower fixed rotary table and lower prop
Transition fit, upper fixed rotary table are threadedly engaged with column body, and the bottom end of lower prop is provided with external screw thread, and lower prop bottom end is equipped with
Fixture nut, fixture nut are located at the lower section of rotation machine table and are connected on collar flange；
Under working condition, the butt end of lower fixed rotary table is connected in rotation machine table, and the taper end of lower fixed rotary table is connected to
On the bottom surface of middle column body, the taper end of upper fixed rotary table is not contacted with the top surface of middle column body.
Preferably, the butt end of upper fixed rotary table is provided with the six-edged axis coaxial with the threaded hole on upper fixed rotary table.
Preferably, upper fixed rotary table further includes having the reinforcing nut being arranged in above six-edged axis, reinforces nut and is set in and determines
On the mandrel of position.
Preferably, it rotates and is additionally provided with vertical multiple second mounting holes through rotation machine table disc face in machine table,
Second mounting hole revolves around it the axle center setting of machine table, and the second mounting hole is counter sink.
The utility model has the advantages that
Lower fixed rotary table is set on lower prop first, then lower prop is inserted into plunger and makes its end of thread position
In the lower section of rotation machine table, fixture nut is then mounted on to the bottom end of lower prop, that is, completes preliminary installation；
This fixes rotary table and lower prop transition fit at present and is folded in centre by rotation machine table and middle column body, limits
Radial direction and axial movement of the lower fixed rotary table relative to positioning core axle are made, so that lower fixed rotary table is fixed on rotation machine table
On；
Then brake-shoe is mounted on positioning core axle, the location hole of brake-shoe is under the action of middle column body perpendicular to rotation
The positioning bore edges of machine table, brake-shoe are connected on the circular conical surface of lower fixed rotary table；
Then upper fixed rotary table is mounted in column body, and make the circular conical surface of upper fixed rotary table by rotating six-edged axis
It is abutted with the positioning bore edges of brake-shoe, so that brake-shoe is fixedly mounted in rotation machine table；
Nut will finally be reinforced to be set in column body and tightened, it is made firmly to resist fixed rotary table, i.e., it is complete
At whole installation steps, it is fixedly mounted on electric precise turntable by the second mounting hole by machine table is rotated at this time, i.e.,
It can be processed by periphery of the common milling machine to brake-shoe.
1. the fixture can once fix two brake-shoes；
2. the fixture is suitable for common milling machine, can two brake-shoes of a simultaneous processing；
3. brake-shoe its end face when fixing on the fixture is not contacted with fixture, solving brake-shoe end face injustice be will cause
The problem of periphery machining accuracy reduces；
4. the location hole of brake-shoe is clipped in the middle by upper and lower two fixed rotary tables, solves the location hole of brake-shoe and determine
The problem of position mandrel clearance fit is trembleed when brake-shoe being caused to process.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the perspective view one of embodiment；
Fig. 2 is the bottom view of embodiment；
Fig. 3 is the perspective view two of embodiment；
Fig. 4 is the left view of embodiment；
Fig. 5 is the perspective view after embodiment removal brake-shoe；
Fig. 6 is the stereogram exploded view one of embodiment；
Fig. 7 is the stereogram exploded view two of embodiment；
Description of symbols:
Rotate machine table 1, the first mounting hole 1a, the second mounting hole 1b, positioning core axle 2, column body 2a, middle column body 2b, under
Cylinder 2c, fixture nut 2d, lower fixed rotary table 3, upper fixed rotary table 4, six-edged axis 4a reinforce nut 4b, bushing 5, plunger 5a, ring
Shape flange 5b.
Specific embodiment
Multiple embodiments that the utility model will be disclosed with schema below, as clearly stated, in many practices
Details will be explained in the following description.It should be appreciated, however, that the details in these practices does not apply this with limitation practical new
Type.That is, the details in these practices is non-essential in some embodiments of the utility model.In addition, for letter
For the sake of changing schema, some known usual structures and component will be painted it in the drawings in simply illustrative mode.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and non-specifically
The meaning of order or cis-position is censured, it is also non-to limit the utility model, it is retouched just for the sake of difference with same technique term
The component stated or operation are not understood to indicate or imply its relative importance or implicitly indicate indicated technology
The quantity of feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not within the protection scope of the requires of the utility model.
A kind of brake-shoe Excircle machining fixture shown in referring to Figure 1 to Figure 7, include rotation machine table 1, positioning core axle 2,
Lower fixed rotary table 3 and upper fixed rotary table 4, rotation machine table 1 be disc-shape, rotation machine table 1 two sides be respectively provided with there are two
Vertical the first mounting hole 1a through rotation 1 disc face of machine table, positioning core axle 2 are fixedly mounted in the first mounting hole 1a, fixed
Position mandrel 2 is vertical with rotation machine table 1 and is respectively positioned on the same side of rotation machine table 1, and two of positioning core axle 2 and brake-shoe
The equal clearance fit of location hole is provided with the through-hole with 2 transition fit of positioning core axle, upper fixed rotary table 4 at lower fixed 3 axle center of rotary table
Axle center at be provided with the threaded hole being threadedly engaged with positioning core axle 2, lower fixed rotary table 3 and upper fixed rotary table 4 are set in fixed
On the mandrel 2 of position, the taper end of lower fixed rotary table 3 is arranged upward, and the taper end of upper fixed rotary table 4 is arranged downward, lower fixed rotary table 3 and upper
The taper end diameter of fixed rotary table 4 is respectively less than the aperture of brake-shoe location hole；
Under working condition, two location holes of brake-shoe are respectively sleeved on two positioning core axles 2, lower 3, fixed rotary table
In the lower section of brake-shoe, upper fixed rotary table 4 is located at the top of brake-shoe, and the circular conical surface of lower fixed rotary table 3 and upper fixed rotary table 4 supports
Connect the positioning bore edges in brake-shoe.
The location hole and 2 clearance fit of positioning core axle of brake-shoe, so that brake-shoe keeps fixed under the action of positioning core axle 2
Position hole vertically rotates the posture of machine table 1, so that the periphery of brake-shoe is perpendicular to rotation machine table 1；
Brake-shoe is clipped in the middle from the following above and of brake-shoe by lower fixed rotary table 3 and upper fixed rotary table 4 respectively, thus
Limit axial movement of the brake-shoe relative to positioning core axle 2；
The circular conical surface of lower fixed rotary table 3 and upper fixed rotary table 4 is connected to the positioning bore edges of brake-shoe, to limit system
Dynamic hoof moving radially relative to positioning core axle 2 compensates for lacking for clearance fit between the location hole of brake-shoe and positioning core axle 2
It falls into.
Under working condition, two brake-shoes are fixedly mounted on positioning core axle 2, and the periphery of two brake-shoes is equal at this time
It is arranged outwardly, and projection of the periphery of two brake-shoes in rotation machine table 1 is overlapped with the same positive round.
The position of first mounting hole 1a is by accurately calculating and Precision Machining, so that under working condition, two brake-shoes
Projection of the periphery in rotation machine table 1 is overlapped with the same positive round, that is, is enclosed and rotated about the axis thereof when rotation machine table 1
When, the rotational trajectory of the periphery of brake-shoe can form a positive round；
Rotation machine table 1 can be so mounted on electric precise turntable, then milling cutter is moved to the side of brake-shoe
Side, can by rotation rotation 1 two brake-shoes of time processing of machine table periphery, common milling machine can high efficiency add
Work is not necessarily to numerically-controlled machine tool, reduces production cost.
It is also equipped with bushing 5 in rotation machine table 1, bushing 5 is fixedly mounted in each first mounting hole 1a, and bushing 5 wraps
Plunger 5a is included, plunger 5a is cylinder, the periphery of plunger 5a and the first mounting hole 1a transition fit, is provided on plunger 5a
Run through the through-hole of its top surface and bottom surface, the through-hole and 2 transition fit of positioning core axle vertically, the hardness of plunger 5a is less than rotation processing
The hardness of platform 1.
Fixture can face the problem of abrasion and deformation after repeatedly processing, in order to avoid the first mounting hole 1a is deformed
The problem of replacing entire rotation machine table 1 is resulted in the need for, is provided with plunger 5a between rotation machine table 1 and positioning core axle 2, is led to
Plunger 5a connection rotation machine table 1 and positioning core axle 2 are crossed, the hardness of plunger 5a is less than the hardness of rotation machine table 1, so plunger
5a can be damaged prior to rotation machine table 1, so only need replacing plunger 5a when plunger 5a is deformed, and it is entire that no replacement is required
Rotate machine table 1.
The bottom end of plunger 5a is provided with the collar flange 5b extended horizontally outward, and collar flange 5b is connected to rotation machine table
On 1 bottom surface.
Plunger 5a is fixedly mounted in the first mounting hole 1a by interference fit, however, to ensure that 2 position of positioning core axle
Precision, generally require and first plunger 5a be tucked into the first mounting hole 1a, plunger again after size is then measured by pincers worker again
It is got ready on 5a, threaded hole is finally then twisted out to plunger 5a drilling, bore hole again, in order to avoid plunger 5a is in drilling and bore hole
It moves in the process, so that it is connected to the bottom end of rotation machine table 1 by collar flange 5b, machine table 1 can will be rotated when processing
Make collar flange 5b in turn upward, then top-down drilling and bore hole, so can avoid plunger 5a in processing time shift
It is dynamic.
Positioning core axle 2 be multi-diameter shaft, positioning core axle 2 include the column body 2a being arranged from top to bottom, middle column body 2b and under
Cylinder 2c, column body 2a is identical as lower prop 2c diameter, and the diameter of middle column body 2b is greater than the diameter of column body 2a or lower prop 2c,
The location hole clearance fit of middle column body 2b and brake-shoe are provided with external screw thread on lower prop 2c；
Lower fixed rotary table 3 is set on lower prop 2c, and upper fixed rotary table 4 is set on column body 2a, lower fixed rotary table 3 with
Lower prop 2c transition fit, upper fixed rotary table 4 are threadedly engaged with column body 2a, and the bottom end of lower prop 2c is provided with external screw thread, under
The bottom end cylinder 2c is equipped with fixture nut 2d, and fixture nut 2d is located at the lower section of rotation machine table 1 and is connected to collar flange 5b
On；
Under working condition, the butt end of lower fixed rotary table 3 is connected in rotation machine table 1, and the taper end of lower fixed rotary table 3 abuts
On the bottom surface of middle column body 2b, the taper end of upper fixed rotary table 4 is not contacted with the top surface of middle column body 2b.
Lower fixed rotary table 3 is set on lower prop 2c first, then lower prop 2c is inserted into plunger 5a and makes it
The end of thread is located at the lower section of rotation machine table 1, and fixture nut 2d is then mounted on to the bottom end of lower prop 2c, that is, completes preliminary
Installation；
This fixes rotary table 3 at present and is folded in lower prop 2c transition fit and by rotation machine table 1 and middle column body 2b
Centre limits radial direction and axial movement of the lower fixed rotary table 3 relative to positioning core axle 2, so that lower fixed rotary table 3 is fixed on
It rotates in machine table 1；
Then brake-shoe is mounted on positioning core axle 2, is then installed in lower prop by fixing rotary table 4 in rotation
2c is upper and the circular conical surface of fixed rotary table 4 is abutted with the location hole of brake-shoe, so that brake-shoe is fixedly mounted on rotation
In machine table 1；
Length by accurately calculating middle column body 2b connects the taper end of upper fixed rotary table 4 and the top surface of middle column body 2b not
Touching, avoids fixed rotary table 4 and is connected on the top surface of middle column body 2b, to cause circular conical surface and the braking of fixed rotary table 4
The discontiguous problem of positioning bore edges of hoof.
The butt end of upper fixed rotary table 4 is provided with the six-edged axis 4a coaxial with the threaded hole on upper fixed rotary table 4.
Staff rotates six-edged axis 4a by spanner, declines so that upper fixed rotary table 4 is able to rotation and pushes against system
Dynamic hoof.
Upper fixed rotary table 4 further includes having the reinforcing nut 4b being arranged in above six-edged axis 4a, reinforces nut 4b and is set in and determines
On the mandrel 2 of position.
Brake-shoe is pushed against only by upper fixed rotary table 4, brake-shoe is easy to loosen during processing, so upper solid
A nut is installed for reinforcing in the top for determining rotary table 4 again, reinforces nut 4b and column body 2a and is threadedly engaged.
It rotates and is additionally provided with vertical multiple second mounting hole 1b through rotation 1 disc face of machine table in machine table 1, second
Mounting hole 1b revolves around it the axle center setting of machine table 1, and the second mounting hole 1b is counter sink.
Staff can easily pass through the second mounting hole 1b and be fixedly mounted on electric precise turntable for machine table 1 is rotated
On, the periphery of brake-shoe is processed to be able to rotation rotation machine table 1.
Working principle:
Lower fixed rotary table 3 is set on lower prop 2c first, then lower prop 2c is inserted into plunger 5a and makes it
The end of thread is located at the lower section of rotation machine table 1, and fixture nut 2d is then mounted on to the bottom end of lower prop 2c, that is, completes preliminary
Installation；
This fixes rotary table 3 at present and is folded in lower prop 2c transition fit and by rotation machine table 1 and middle column body 2b
Centre limits radial direction and axial movement of the lower fixed rotary table 3 relative to positioning core axle 2, so that lower fixed rotary table 3 is fixed on
It rotates in machine table 1；
Then brake-shoe is mounted on positioning core axle 2, the location hole of brake-shoe under the action of middle column body 2b perpendicular to
Machine table 1 is rotated, the positioning bore edges of brake-shoe are connected on the circular conical surface of lower fixed rotary table 3；
Then upper fixed rotary table 4 is mounted on column body 2a, and make upper fixed rotary table 4 by rotating six-edged axis 4a
Circular conical surface is abutted with the positioning bore edges of brake-shoe, and the location hole and positioning core axle clearance fit for solving brake-shoe cause to brake
The problem of hoof trembles when processing；
The fixture can once fix and two brake-shoes of simultaneous processing, and the end face of brake-shoe does not connect with fixture at this time
Touching solves the problems, such as that brake-shoe end face injustice will cause the reduction of periphery machining accuracy；
Nut 4b will finally be reinforced to be set on column body 2a and tightened, it is made firmly to resist fixed rotary table 4,
Whole installation steps are completed, machine table 1 will be rotated by the second mounting hole 1b at this time and be fixedly mounted on electric precise turn
On disk, it can be processed by periphery of the common milling machine to brake-shoe.
Upper described only the embodiments of the present invention, is not intended to limit the utility model.For this field
For technical staff, various modifications and changes may be made to the present invention.The interior institute of all spirit and principle in the utility model
Any modification, equivalent substitution, improvement and etc. of work should all include within the scope of the claims of the utility model.
Claims (8)
1. a kind of brake-shoe Excircle machining fixture, it is characterised in that: include rotation machine table (1), positioning core axle (2), lower solid
Determine rotary table (3) and upper fixed rotary table (4), rotation machine table (1) is disc-shape, and the two sides of rotation machine table (1) are provided with
Two vertical the first mounting holes (1a) through rotation machine table (1) disc face, positioning core axle (2) are fixedly mounted on the first installation
In hole (1a), positioning core axle (2) is vertical with rotation machine table (1) and is respectively positioned on the same side of rotation machine table (1), locating core
Two equal clearance fits of location hole of axis (2) and brake-shoe are provided at lower fixed rotary table (3) axle center and positioning core axle (2) mistake
The through-hole of cooperation is crossed, the threaded hole being threadedly engaged with positioning core axle (2), lower fixation are provided at the axle center of upper fixed rotary table (4)
Rotary table (3) and upper fixed rotary table (4) are set on positioning core axle (2), and the taper end of lower fixed rotary table (3) is arranged upward, upper solid
The taper end for determining rotary table (4) is arranged downward, and it is fixed that the taper end diameter of lower fixed rotary table (3) and upper fixed rotary table (4) is respectively less than brake-shoe
The aperture in position hole；
Under working condition, two location holes of brake-shoe are respectively sleeved on two positioning core axles (2), lower fixed rotary table (3) position
In the lower section of brake-shoe, upper fixed rotary table (4) is located at the top of brake-shoe, the circle of lower fixed rotary table (3) and upper fixed rotary table (4)
The conical surface is connected to the positioning bore edges of brake-shoe.
2. a kind of brake-shoe Excircle machining fixture according to claim 1, it is characterised in that: under working condition, two systems
Dynamic hoof is fixedly mounted on positioning core axle (2), and the periphery of two brake-shoes is arranged outwardly at this time, and two brake-shoes
Periphery rotation machine table (1) on projection be overlapped with the same positive round.
3. a kind of brake-shoe Excircle machining fixture according to claim 1, it is characterised in that: in rotation machine table (1) also
It is equipped with bushing (5), bushing (5) is fixedly mounted in each first mounting hole (1a), and bushing (5) includes plunger (5a), column
Filling in (5a) is cylindrical, the periphery and the first mounting hole (1a) transition fit of plunger (5a), and it is vertical to be provided on plunger (5a)
Through-hole through its top surface and bottom surface, the through-hole and positioning core axle (2) transition fit, the hardness of plunger (5a) are less than rotation processing
The hardness of platform (1).
4. a kind of brake-shoe Excircle machining fixture according to claim 3, it is characterised in that: the bottom end of plunger (5a) is arranged
There is the collar flange (5b) extended horizontally outward, collar flange (5b) is connected on the bottom surface of rotation machine table (1).
5. a kind of brake-shoe Excircle machining fixture according to claim 4, it is characterised in that: positioning core axle (2) is ladder
Axis, positioning core axle (2) include the column body (2a), middle column body (2b) and lower prop (2c) being arranged from top to bottom, column body
(2a) is identical as lower prop (2c) diameter, and the diameter of middle column body (2b) is greater than the diameter of column body (2a) or lower prop (2c), in
The location hole clearance fit of cylinder (2b) and brake-shoe is provided with external screw thread on lower prop (2c)；
Lower fixed rotary table (3) is set on lower prop (2c), and upper fixed rotary table (4) is set on column body (2a), lower fixed circle
Platform (3) and lower prop (2c) transition fit, upper fixed rotary table (4) are threadedly engaged with column body (2a), the bottom end of lower prop (2c)
It is provided with external screw thread, the bottom end lower prop (2c) is equipped with fixture nut (2d), and fixture nut (2d) is located at rotation machine table (1)
Lower section is simultaneously connected on collar flange (5b)；
Under working condition, the butt end of lower fixed rotary table (3) is connected in rotation machine table (1), and the taper end of lower fixed rotary table (3) is supported
It connects on the bottom surface of middle column body (2b), the taper end of upper fixed rotary table (4) is not contacted with the top surface of middle column body (2b).
6. a kind of brake-shoe Excircle machining fixture according to claim 1, it is characterised in that: above fix the thick of rotary table (4)
End is provided with the six-edged axis (4a) coaxial with the threaded hole on upper fixed rotary table (4).
7. a kind of brake-shoe Excircle machining fixture according to claim 6, it is characterised in that: above fix rotary table (4) and also wrap
The reinforcing nut (4b) being arranged above six-edged axis (4a) is included, nut (4b) is reinforced and is set on positioning core axle (2).
8. a kind of brake-shoe Excircle machining fixture according to claim 1, it is characterised in that: in rotation machine table (1) also
Vertical multiple second mounting holes (1b) through rotation machine table (1) disc face are provided with, the second mounting hole (1b) revolves around it
The axle center of machine table (1) is arranged, and the second mounting hole (1b) is counter sink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920065755.8U CN209565818U (en) | 2019-01-15 | 2019-01-15 | A kind of brake-shoe Excircle machining fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920065755.8U CN209565818U (en) | 2019-01-15 | 2019-01-15 | A kind of brake-shoe Excircle machining fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209565818U true CN209565818U (en) | 2019-11-01 |
Family
ID=68333132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920065755.8U Expired - Fee Related CN209565818U (en) | 2019-01-15 | 2019-01-15 | A kind of brake-shoe Excircle machining fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209565818U (en) |
-
2019
- 2019-01-15 CN CN201920065755.8U patent/CN209565818U/en not_active Expired - Fee Related
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Effective date of registration: 20210806 Address after: 435000 east of a4-c Road, south of Jinshan Avenue, Huangshi City, Hubei Province Patentee after: Huangshi Saite friction material Co.,Ltd. Address before: 323000 Tianning Temple, Liandu District, Lishui, Zhejiang Patentee before: LISHUI XINYU MACHINERY MANUFACTURING Co.,Ltd. |
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