CN110985568A - Clamp body, clamp body machining method and brake assembling method with clamp body - Google Patents
Clamp body, clamp body machining method and brake assembling method with clamp body Download PDFInfo
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- CN110985568A CN110985568A CN201911111622.0A CN201911111622A CN110985568A CN 110985568 A CN110985568 A CN 110985568A CN 201911111622 A CN201911111622 A CN 201911111622A CN 110985568 A CN110985568 A CN 110985568A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/005—Components of axially engaging brakes not otherwise provided for
- F16D65/0068—Brake calipers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D2055/0004—Parts or details of disc brakes
- F16D2055/0016—Brake calipers
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to the field of air pressure disc brakes, and discloses a caliper body, a caliper body machining method and a brake assembling method with the caliper body, wherein the caliper body is of an integrally formed structure, a first assembling cavity is formed in the caliper body, a supporting frame is formed on the lower side of the first assembling cavity, column pin holes are formed in the left side and the right side of the supporting frame, an axle hole and a pressing hole are formed in the upper end surface of the first assembling cavity, a stress part is formed in the first assembling cavity, a matching notch used for being matched with a rolling shaft is formed in the lower end surface of the stress part, and the axis of the matching notch is vertical to the axis of the axle hole; the side of the first assembly cavity is provided with a fabrication hole, and the projection of the matching notch along the extending direction of the matching notch falls into the projection area of the fabrication hole along the axis direction of the matching notch. The brake has the advantages of reliable braking, simple processing and high production efficiency. And the clamp body is simple to process and is convenient for assembling other parts.
Description
Technical Field
The invention relates to the field of air pressure disc type brakes, in particular to a caliper body, a caliper body machining method and a brake assembling method with the caliper body.
Background
There are various air disc brakes on the market at present, and if classified according to the pushing mode, the air disc brakes can be classified into single-push-rod air disc brakes and double-push-rod air disc brakes, and the double-push-rod air disc brakes can be classified into axial air disc brakes and radial air disc brakes, and if classified according to the assembling mode of the rotating assembly, the air disc brakes can be classified into upper cover type air disc brakes and non-upper cover type air disc brakes. The non-upper cover type air pressure disc brake is mainly an axial double-push-rod air pressure disc brake, basically, the rotating component is in a small assembly form, and the rotating component is placed in the cavity of the integral caliper body in the assembly form and is sealed by a bottom cover, a sealing cover cap and the like; the upper cover type air pressure disc brake mainly comprises a single push rod air pressure disc brake and a radial double push rod air pressure disc brake.
The technical scheme discloses an integral brake caliper body, wherein a part of the brake caliper body replacing an end cover is of an integrally formed structure, a cavity for mounting an adjuster assembly is formed in the caliper body, a special processing tool needs to be introduced in the processing process of a supporting surface and other parts, the brake caliper body is called an angle head in the industry, the clamping is inconvenient in the processing process of the angle head, the processing process of the angle head is complicated, the production efficiency is low, and the cost is high.
The utility model provides a for divide into two parts with the pincers body, but the lower part of upper cover portion and pincers body forms an organic whole, makes the pincers body upper cover portion need not use more bolt to fix, avoids traditional upper cover portion structural strength to need the defect of more bolted connection greatly.
Among the prior art, wuhan yuan feng automobile parts limited's patent 201410358047.5 discloses "have bearing limit structure's atmospheric pressure disk brake pressure arm", this pressure arm needs the stopper and matches the use at bearing at the installation, and it is narrow and small owing to the pincers body of non-end cover all has the installation cavity assembly mouth, is unfavorable for erection equipment and staff to get into and processes the assembly in this space in the actual assembling process, so the installation of stopper is very complicated under this kind of structure, and production efficiency is lower.
Patent 201510788100.X of Wuhan Yuanfeng automobile parts Limited discloses an assembly method of an air pressure disc brake, which utilizes an integral caliper, and from the attached drawings and the description of the specification, if the supporting surface is of an integrally formed structure, the selected integral caliper body is the integral caliper body of Weibo, and the defects of the caliper body are described in the documents; the supporting solution of the supporting surface selected for this purpose is the solution disclosed in its own patent 201410358047.5, using a limiting block, if the supporting surface is of non-integral structure, the drawbacks of which are also mentioned above. In addition, the assembly scheme requires a special fixture for assembly when the first component and the second component are assembled, so that the whole assembly process cannot be completed on the same processing equipment, and automation is not facilitated.
And traditional pivot and cylinder cap are line contact, and the contact force is great, causes spare part to become invalid easily. And the pivot is mostly the slip design, and frictional resistance is great, though patent 201410358047.5 discloses "the atmospheric pressure disk brake pressure arm that has bearing limit structure" uses needle bearing to realize rolling and replace the slip, but this kind of structural assembly is comparatively complicated.
In view of the problems in the prior art, the applicant provides a new technical solution to solve the above technical problems.
Disclosure of Invention
The invention provides an integral air disc brake aiming at the defects of complex manufacturing, high assembly difficulty, low assembly efficiency and the like of a caliper body of an air disc brake in the prior art.
In order to solve the technical problem, the invention is solved by the following technical scheme:
the clamp comprises a clamp body, wherein the clamp body is of an integrally formed structure, a first assembly cavity is formed in the clamp body, a support frame is formed on the lower side of the first assembly cavity, column pin holes are formed in the left side and the right side of the support frame, a shaft hole and a pressing hole are formed in the upper end face of the first assembly cavity, a stress part is formed in the first assembly cavity, a matching notch used for being matched with a rolling shaft is formed in the lower end face of the stress part, and the axis of the matching notch is perpendicular to the axis of the shaft hole; the side of the first assembly cavity is provided with a fabrication hole, and the projection of the matching notch along the extending direction of the matching notch falls into the projection area of the fabrication hole along the axis direction of the matching notch. Thereby this pincers body is through the area of contact of design cooperation notch increase and roller bearing, the contact force between the two has been reduced, thereby make the roller bearing can take place to roll in the cooperation inslot, and the fabrication hole of design, it is simpler to make processing cooperation notch, only need fix a position the work piece can realize directly processing out the cooperation notch of high accuracy from the outside at horizontal machining center, the course of working can go on under same clamping condition with other processing position, so practice thrift process time greatly, the pincers body of this kind of structure of design simultaneously also is convenient for the installation in later stage, all installation processes can assemble in proper order on the assembly jig, the assembly process is simpler, assembly efficiency is also higher.
Preferably, the number of the process holes is two, the two process holes are respectively arranged on the left side wall of the first assembly cavity and the right side wall of the first assembly cavity, and the process holes and the matching notches are coaxially arranged; the number of the matching notches is two, and the matching notches are distributed on the left side and the right side of the shaft hole; every cooperation notch is formed with and is used for carrying out spacing face to the roller bearing near the one end in shaft hole, and the one end of keeping away from the shaft hole is for link up state and fabrication hole intercommunication, and two cooperation notches about two fabrication holes convenient processing to the realization cooperates with two roller bearings.
Preferably, the number of the stress parts is two, the stress parts are distributed on two sides of the axis where the shaft hole is located, and the lower end face of each stress part is provided with a matching notch; the left side face and the right side wall of the stress part and the first assembling cavity are provided with installing grooves, and the fabrication holes and the assembling notches are distributed on two sides of the installing grooves.
Preferably, the cross-section of the mating notch is arcuate. The cambered surface can be matched with the rolling shaft, so that the contact area is increased, and the line contact is changed into surface contact; and the projection of the partial side line of the section of the fabrication hole and the side line of the section of the assembly notch along the axial direction of the assembly notch is superposed.
As preferably, first assembly chamber includes to the bellied second chamber in back, and the left and right sides setting in first assembly chamber is formed with the location platform, and the location platform is highly less than first assembly chamber up end place height, is formed with the column pinhole on the location platform, and the outside in column pinhole is provided with the location shoulder, and the location shoulder sets up on the location platform, and the left side and the right side of the lower extreme of pincers body all are provided with the constant head tank, and the medial surface of constant head tank is the locating surface.
The invention also discloses a machining method of the clamp body, which comprises the following steps:
the method comprises the following steps that firstly, a clamp is used for clamping and positioning an integrally formed clamp body;
step two, processing the end surface of the shaft hole and the end surface of the pin hole;
step three, machining the shaft hole and the pin hole;
fourthly, processing a bolt fixing hole on the end face of the opening at the lower end of the first assembling cavity for fixing the supporting seat pressing plate;
fifthly, rotating the clamp, machining the side wall of the first assembling cavity, and machining a matching notch on the stress part through a machining process hole;
and step six, rotating the fixture, machining the side wall opposite to the side wall of the first assembling cavity in the step six, and machining a matching notch on the stress part by machining a process hole on the side wall on the other side. The machining precision can be ensured and the machining efficiency is higher by utilizing one-time clamping machining on the same machining center.
Preferably, the tooling holes are machined by a cutter or cast.
Preferably, a step of processing a bracket fixing hole for fixing the wear warning wire is further provided between the third step and the fourth step.
Preferably, the fixture is a horizontal machining center.
The invention also provides an assembly method of the brake, the brake comprises the caliper body, the brake comprises an adjuster assembly, a pin and a pin component, a supporting seat pressing plate, a return spring, a brake pushing plate, an upper brake block, a lower brake block, a pressing plate component and a pressure arm component, and the assembly process comprises the following steps:
the brake comprises a sealing seat for sealing the process holes, and the sealing seat is hermetically arranged in the process holes on the left side and the right side of the first assembly cavity;
secondly, pressing the pin bushing into two pin holes of the clamp body, and installing a pin sheath;
thirdly, fixing the bracket on a production line assembly tool;
step four, correspondingly installing the two pins into the pin holes of the two pins respectively, installing one end of each pin into a positioning hole of the support, sleeving the sealing edge of the pin sheath into the pin groove, and inserting the pin sheath into the pin to fix the pin on the support;
step five, the rolling shaft is arranged in two matching notches of the pliers body;
sixthly, mounting the pressure arm assembly on a rolling shaft;
step seven, assembling a bearing assembly on the adjuster assembly, and assembling the whole adjuster assembly on the pressure arm assembly;
step eight, a return spring is arranged on the supporting seat pressing plate, the adjusting rod sheath is arranged in the extending port of the supporting seat pressing plate, sealant is coated, the whole supporting seat pressing plate is arranged on the end face of the lower end of the first assembling cavity, and the supporting seat pressing plate is screwed and fixed by an inner hexagonal cylindrical head bolt; the sealing edge of the adjusting rod sheath is fixed on the adjuster assembly;
and step nine, mounting the brake push plate, the upper brake block and the lower brake block on the bracket, simultaneously mounting a retaining spring on the brake push plate, the upper brake block and the lower brake block, then mounting a pressure plate assembly, and fixing the pressure plate assembly on the caliper body.
Preferably, the end face of the upper part of the pin hole is a positioning table, and a bolt fixing hole is formed in the positioning table; the bolt fixes the supporting seat pressing plate on the clamp body through the bolt fixing hole; the upper end of the pin is provided with a dustproof cover, and the shaft hole is provided with a sealing gasket and a plug.
Due to the adoption of the technical scheme, the invention has the following remarkable technical effects:
according to the invention, through designing the clamp body structure of the air pressure disc brake, the high-precision arc-shaped groove matched with the rolling shaft can be formed in the clamp body by creatively adopting an external processing method, so that the processing cost is greatly saved compared with the traditional integrated forming, and the processing efficiency is also very high. Meanwhile, the area of the contact part of the assembly notch and the roller is increased, so that the contact force is reduced, and the roller can roll more conveniently and simply. Meanwhile, the clamp body is convenient to clamp and position, all processing items can be completed by one-time clamping on one processing center, and the position accuracy between the processing parts of the clamp body is ensured. Meanwhile, the clamp body with the structure is convenient for assembling parts of the air pressure disc brake. And utilize the pressure arm mechanism of this kind of pincers body assembly to have the assembly simple, the less advantage of contact force, because adopt curved cooperation notch to assemble the pivot, greatly reduced the contact force of roller bearing and atress portion, make the roller bearing look after need coating lubricating grease just can take place to roll between cooperation notch and assembly groove, the assembly of this partial structure has been simplified greatly, and both ends all carry on spacingly about the roller bearing, can guarantee that the roller bearing can not break away from the effect portion, make the whole atress of effect portion more balanced.
And this pincers body course of working is stable, does not need a lot of clamping, adopts the mode of outside processing, and processing is more convenient, and the cutter is practical more extensive, has improved efficiency, has practiced thrift the cost, and the machining precision is also higher simultaneously.
The air pressure disc brake has the advantages that the components are easy to assemble, enough assembly space is provided for assembly during assembly, the traditional bearing assembly arranged on the pressure arm is not needed, and the cost is lower. Meanwhile, the assembly precision of all parts of the whole clamp body is reliable, and the brake block slides up and down stably. The air disc brake is stable in braking and quick and reliable in return, and meanwhile, the roller of the pressure arm assembly moves in a rolling mode and contacts with the caliper body in a surface contact mode, so that the air disc brake cannot cause large load to the local part of the caliper body, the service life of the air disc brake is prolonged, and the failure rate is reduced.
Meanwhile, the assembly process of the brake is simple and reliable, other redundant assembly tools are not needed, the main body of the whole assembly process is completed on an assembly line, the assembly speed is greatly increased, the types and the number of the used assembly equipment are fewer, and the cost is saved.
Drawings
Fig. 1 is a schematic view of the overall structure of the caliper body.
Fig. 2 is a perspective view of the rear view of the caliper body.
Fig. 3 is a left side view of fig. 1.
Fig. 4 is a schematic perspective view of the cross-sectional view of fig. 3B-B.
Fig. 5 is an initial state diagram in the clamping state of the caliper body.
Fig. 6 is a schematic structural view of the air disc brake.
Fig. 7 is a left side view of fig. 6.
Fig. 8 is a cross-sectional view of fig. 7.
Fig. 9 is a partially enlarged view of fig. 8.
FIG. 10 is a schematic diagram of the construction of the pressure arm assembly.
Fig. 11 is a rear perspective view of the air disc brake.
Fig. 12 is an internal schematic view of the air disc brake.
Fig. 13 is a half sectional view of the air disc brake.
Fig. 14 is a schematic structural view of a support base plate.
Fig. 15 is a schematic structural view of the stent.
Fig. 16 is a schematic view of the structure of the retaining spring.
The names of the parts indicated by the numerical references in the drawings are as follows: 1-clamp body, 2-first assembly cavity, 3-shaft hole, 4-stress part, 5-matching notch, 6-fabrication hole, 7-limiting surface, 8-mounting groove, 9-second cavity, 10-positioning table, 11-positioning shoulder, 12-positioning groove, 13-pressure arm, 14-roller, 15-pressing part, 16-action part, 17-adjuster assembly, 18-assembly groove, 19-sealing seat, 20-insertion part, 21-limiting part, 30-pin hole, 31-pressing hole, 32-supporting seat pressing plate, 33-return spring, 34-supporting frame, 35-assembly opening, 36-bracket, 37-pressing plate component, 38-retaining spring, 39-upper brake block, 40-lower brake block, 41-brake push plate, 42-bearing component, 43-supporting groove, 44-supporting platform, 45-clamping interface, 46-clamping lug, 47-supporting plate, 48-outer press plate, 49-50-pin, 51-connecting piece, 52-extension opening, 60-mounting opening and 61-guide groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1 to 4, the present embodiment describes the structure of a caliper body 1 and the structure of an air disc brake to which the caliper body 1 is fitted. The brake in this embodiment is a single push rod type air pressure disc brake. The clamp body 1 is an integrally formed clamp body, a pressure arm component arranged in the clamp body 1 is arranged on the clamp body 1, and the clamp body 1 is integrally cast and formed. The upper, lower, left, right, front and rear positions below are based on fig. 1. A first assembling cavity 2 for assembling the pressure arm assembly is formed in the clamp body 1, a shaft hole 3 is formed in the upper end face of the first assembling cavity 2, the center of the shaft hole 3 is the braking center of the brake, and an adjusting rod of the adjuster assembly 17 is assembled in the shaft hole 3 during assembling. The first assembly cavity 2 is formed with a stress part 4, and the stress part 4 is a boss integrally formed in the first assembly cavity 2 and extending downwards. The lower end face of the stress part 4 is provided with a matching notch 5 used for matching with the roller 14, and the axis of the matching notch 5 is vertical to the axis of the shaft hole 3; fabrication hole 6 has been seted up to the side of first assembly chamber 2, and cooperation notch 5 falls into in the projection region of fabrication hole 6 along 5 axis directions of cooperation notch along the projection of 5 extending directions of cooperation notch, and fabrication hole 6 is used for processing cooperation notch 5, because directly processes from the lower extreme opening of first assembly chamber 2, not only need use the angle head to reduce machining efficiency, and angle head processing also hardly processes out the cooperation notch 5 of the shape that this embodiment narrated moreover. Thereby this pincers body 1 is through the increase of design cooperation notch 5 and the area of contact of roller bearing 14, contact force between the two has been reduced, thereby make roller bearing 14 can take place to roll in cooperation notch 5, and the fabrication hole 6 of design, make processing cooperation notch 5 simpler, only need fix a position the work piece can realize following outside direct processing and go out the cooperation notch 5 of high accuracy at horizontal machining center, the course of working can go on under same clamping condition with other processing position, so the process time has been practiced thrift greatly.
In the present embodiment, since the single push rod type air disc brake has two rollers 14, the number of the fitting notches 5 and the tooling holes 6 is also two in the present embodiment in order to match therewith. Two fabrication holes 6 are respectively arranged on the left side wall of the first assembly cavity 2 and the right side wall of the first assembly cavity 2, the fabrication holes 6 are coaxially arranged with the matching notches 5, and the two fabrication holes 6 are respectively used for processing the matching notches 5 on the left side and the matching notches 5 on the right side, so that the two fabrication holes are matched with the two rolling shafts 14. The two matching notches 5 are respectively distributed on the left side and the right side of the shaft hole 3; one end of each matching notch 5, which is close to the shaft hole 3, is provided with a limiting surface 7 for limiting the rolling shaft 14, and one end, which is far away from the shaft hole 3, is communicated with the technical hole 6 in a through state.
For the convenience of processing cooperation notch 5 and be convenient for assemble with 17 pressure arm subassemblies of adjuster assembly, the number of atress portion 4 is two, distributes in the both sides of shaft hole 3 place axis, and cooperation notch 5 has all been seted up to the lower terminal surface of every atress portion 4, and cooperation notch 5 runs through the side that atress portion 4 kept away from 3 one ends in shaft hole. Mounting grooves 8 are formed between the force bearing part 4 and the left side surface and the right side wall of the first assembly cavity 2, and the fabrication holes 6 and the assembly grooves 18 are distributed on two sides of the mounting grooves 8. The mounting groove 8 is used for sealing the process opening in the later period, and the sealing is guaranteed to be more convenient.
Because the cross-section of roller 14 is circular, so the cross-section of cooperation notch 5 is the arc, and when the assembly, the upper end of roller 14 is contradicted in cooperation notch 5 to increased area of contact, made the line contact become the face contact, make roller 14 can roll in cooperation notch 5 smoothly.
The brake also comprises an adjuster assembly 17 and a supporting base pressing plate 32 arranged on the lower end face of the first assembly cavity 2, the lower end of the pressure arm 13 is supported on the adjuster assembly, and the adjuster assembly is supported on the supporting base pressing plate 32 through a return spring 33
As shown in fig. 6 to 10, the upper end surface of the first assembling chamber 2 is provided with a pressing hole 31, and it is obvious that the pressing hole 31 and the shaft hole 3 are both communicated with the first assembling chamber 2. In this embodiment, the pressure arm assembly includes a pressure arm 13 and a roller 14, a lower end of a circumferential side of the roller 14 is in contact with the pressure arm 13, and an upper end of the circumferential side of the roller 14 is fitted in the fitting notch 5, so that the roller 14 is retained between the upper fitting notch 5 and the lower pressure arm 13, and an end of the roller 14 close to the shaft hole 3 is retained by the retaining surface 7.
The specific structure of the pressure arm 13 is described in detail below. The pressure arm 13 includes a pressing portion 15 and an acting portion 16 connected to the pressing portion 15, and a pressing end of the pressing portion 15 is located at a pressing port through which the pressing portion 15 acts during braking. The lower end of the action part 16 is abutted against the adjuster assembly 17, the upper end of the action part 16 is provided with an assembling groove 18 for mounting the roller 14, and the roller 14 is limited between the assembling groove 18 and the matching notch 5; when the pressing portion 15 moves up and down, the pressing portion 16 is driven to rotate around the roller 14, and the lower end of the pressing portion 16 drives the adjuster assembly 17 to work. The number of the action parts 16 is two, the two action parts 16 correspond to the rollers 14 one by one, the two action parts 16 are respectively distributed on the left side and the right side of the pressing part 15, and the action parts 16 are workpieces with sector ring-shaped sections. The pressing portion 15 in this embodiment is in the shape of a rod as a whole.
In order to seal the process opening and prevent the roller 14 from sliding left and right greatly, in the embodiment, a sealing seat 19 is installed in the process opening, the sealing seat 19 includes an inserting part 20 inserted in the process opening, and also includes a limiting part 21 installed in the installation groove 8, the limiting part 21 limits the outer end of the roller 14, the projection of the limiting part 21 along the axial direction of the roller 14 covers part or all of the projection of the roller 14 along the axial direction of the roller 14, so as to limit the left and right movement of the roller 14, in the embodiment, the sealing seat 19 is an elastic rubber member, and the projection of the limiting part 21 along the axial direction of the roller 14 covers all of the projection of the roller 14 along the axial direction of the roller 14. The cross-sectional area of the acting part 16 and the roller 14 can be ensured, and the condition that the acting part 16 is stressed unevenly due to large left-right sliding of the roller 14 and the damage of parts is avoided.
Because the contact surface of the roller 14 and the caliper body 1 is a cambered surface, the contact force per unit area is smaller because the linear contact is replaced by the surface contact, so that the roller 14 can roll, the resistance and the assembly complexity are reduced, and the roller 14 can roll only by coating lubricating grease without using a needle bearing between the roller 14 and the pressure arm 13.
The above description mainly refers to the assembly structure of the pressure arm assembly and the caliper body 1, and other main parts of the air disc brake will be described below, so that the public can more clearly understand how to implement the technical solution.
As shown in fig. 1 to 15, the brake further includes an adjuster assembly 17 and a supporting base pressing plate 32 mounted on the lower end surface of the first assembly cavity 2, the lower end of the pressure arm 13 is supported on the adjuster assembly, the adjuster assembly is supported on the supporting base pressing plate 32 through a return spring 33, a supporting groove 43 is provided on the adjuster assembly, a bearing assembly 42 is mounted in the supporting groove 43, the lower end of the action part 16 is supported on the bearing assembly 42, an assembly groove 18 for mounting the roller 14 is provided on the upper end of the action part 16, and the roller 14 is limited between the assembly groove 18 and the matching notch 5; when the pressing portion 15 moves up and down, the pressing portion 16 is driven to rotate around the roller 14, and the lower end of the pressing portion 16 drives the adjuster assembly 17 to work. The adjusting rods of the adjuster assembly 17 are matched in the shaft holes 3, and the supporting grooves 43 on the adjuster assembly 17 correspond to the rollers 14 one by one, so that the number of the supporting grooves 43 is two, the supporting grooves 43 are distributed on two sides of the adjusting rods, and the supporting grooves 43 are processed into arc-shaped grooves in order to be matched with the action parts 16 of the pressure arms 13. The upper end of the adjuster assembly 17 is limited by the pressure arm 13, and the lower end is limited by the return spring 33. The supporting seat pressing plate 32 is fixed on the lower end face of the first assembly cavity 2 through bolts or other fixing members, and an extension opening 52 for the downward extension of the adjusting seat pressing plate is arranged on the supporting seat pressing plate 32, so that the lower end of the adjusting seat assembly 17 is a brake block with an acting end capable of acting on the lower side of the lower supporting seat pressing plate 32 through the extension opening 52. Wherein return spring 33's lower extreme is contradicted on supporting seat clamp plate 32, and the upper end is contradicted on adjuster assembly 17 to carry out self return after adjuster assembly 17 pushes down, in order to guarantee the stable installation of spring, be provided with the spacing mouth 91 that is used for spacing return spring 33 on the supporting seat clamp plate 32, return spring 33 packs into in spacing mouth 91. Meanwhile, the number of the return springs 33 is two, and the two return springs are distributed on the left side and the right side of the adjusting rod and are positioned below the roller 14.
The caliper body 1 is integrally formed with a support frame 34 at the lower end of the first assembling cavity 2, the support frame 34 can also be expressed as an installing frame, an assembling opening 35 is arranged in the support frame 34, and the assembling opening 35 penetrates through the rear side of the caliper body 1. The assembly port 35 is communicated with the first assembly cavity 2, the left side and the right side of the assembly port 35 are provided with the column pin holes 30, and the assembly port 35 is communicated with the column pin holes 30; the mounting port 35 is provided with a bracket 36, wherein the lower end of the mounting port 35 is formed with a support base 44, the bracket 36 is supported on the support base 44, and the shape of the support base 44 is matched with the lower end surface of the bracket 36. The pin 50 assembly is installed in the pin hole 30, the upper end of the bracket 36 is fixedly installed with the pin 50 assembly, and the pin 50 and the bracket 36 are fixedly connected by bolts in this embodiment. The back of the assembling opening 35 is provided with a pressing plate assembly 37 which is arranged in the vertical direction, the upper end of the pressing plate assembly 37 is connected with the supporting base pressing plate 32, a pressing plate socket 53 is arranged on the supporting base pressing plate 32, and the pressing plate assembly 37 is inserted into the pressing plate socket 53. The lower end of the pressure plate assembly 37 fixes the pressure plate assembly 37 on the caliper body 1 through a connecting piece 51, and the connecting piece 51 is a locking bolt in the embodiment.
The brake obviously also comprises a brake block and a retaining spring 38 for mounting the brake block, wherein a mounting opening 60 for mounting the brake block is formed in the bracket 36, the shape of the mounting opening 60 is matched with that of a matching part of the brake block, so that the brake block can stably slide up and down in the mounting opening 60 without shaking, and a guide groove 61 is formed in the mounting opening 60, and the brake block can slide up and down along the guide groove 61. The brake shoes include an upper brake shoe 39 and a lower brake shoe 40, the upper brake shoe 39 and the lower brake shoe 40 being mounted in a mounting opening 60 of the bracket 36 and slidable along the bracket 36. A brake push plate 41 is arranged between the upper brake block 39 and the adjusting seat assembly, the brake push plate 41 is abutted against the lower end of the adjusting seat assembly, the brake push plate 41 is arranged on the lower side of the supporting seat press plate 32, the lower end face of the brake push plate 41 is contacted with the upper brake block 39, and the adjuster assembly 17 moves downwards to push the brake press plate and the upper brake block 39 to move downwards.
In this embodiment, the upper brake block 39 and the brake push plate 41 are both provided with a retaining spring 38, the retaining spring 38 is cooperatively mounted on the pressure plate assembly 37, and the upper brake block 39 slides up and down to drive the retaining spring 38 to move up and down along the pressure plate assembly 37. Wherein, keep spring 38 for the whole leaf spring spare that is "nearly" style of calligraphy, keep the flexion 49 card of spring 38 to establish on clamp plate assembly 37 along clamp plate assembly 37 up-and-down slip, flexion 49 forms the bayonet socket, and the both sides of flexion 49 are joint portion, are provided with joint mouth 45 in the joint portion, and the rear side of going up brake block 39 and braking push pedal 41 all is provided with two joint ears 46, and joint ear 46 joint is in joint mouth 45. The retaining spring 38 having the same structure is connected to the back of the lower brake shoe 40 in this embodiment, and the connection structure between the lower brake shoe 40 and the retaining spring 38 is the same as the connection structure between the upper brake shoe 39 and the retaining spring 38.
In this embodiment, the pressing plate assembly 37 includes an inner supporting plate 47 and an outer pressing plate 48, the bent portions 49 of the holding springs 38 are clamped on the supporting plate 47 and are limited and pressed by the outer pressing plate 48, and the holding springs 38 can slide between the outer pressing plate 48 and the supporting plate 47.
The working process of the air disc brake is as follows: the pressure arm 13 is pressed through the pressing hole 31, the pressing end of the pressure arm 13 moves downwards to drive the acting part 16 to rotate upwards around the rolling shaft 14, the lower side of the acting part 16 acts on the adjusting seat assembly through the bearing assembly 42, the return spring 33 is compressed when the adjusting seat assembly moves downwards, the brake push plate 41 and the upper brake block 39 slide downwards under the pushing of the adjusting seat assembly, so that the distance between the brake push plate 41 and the lower brake block 40 is shortened, the brake disc is clamped to realize braking, after the braking is finished, the adjusting seat assembly returns to the initial position under the action of the return spring 33, and the upper brake block 39 and the brake push plate 41 return to the initial position under the action of the outward centrifugal force of the brake disc.
According to the embodiment, the structure of the clamp body 1 is designed, and the arc-shaped groove matched with the roller 14 with high precision can be formed in the clamp body 1 by creatively adopting an external processing method, so that the processing cost is greatly saved compared with the traditional integrated forming method, and the processing efficiency is also high. Meanwhile, the area of the contact part of the matching notch 5 and the roller 14 is increased, so that the contact force is reduced, and the roller 14 can roll more conveniently and simply. Meanwhile, the clamp body 1 is convenient to clamp and position, all processing items can be completed on one processing center by one-time clamping, and the position accuracy between the processing parts of the clamp body 1 is ensured. Meanwhile, the clamp body 1 with the structure is convenient for assembling parts of the air pressure disc brake. And utilize the pressure arm mechanism of this kind of pincers body 1 assembly to have the assembly simple, the advantage that the contact force is less, because adopt curved cooperation notch 5 to assemble the pivot, greatly reduced the contact force of roller bearing 14 with atress portion 4, make roller bearing 14 look after need coating lubricating grease just can take place to roll between cooperation notch 5 and assembly groove 18, the assembly of this part structure has been simplified greatly, and both ends are all carried on spacingly about roller bearing 14, can guarantee that roller bearing 14 can not break away from action portion 16, make action portion 16's whole atress more balanced.
Meanwhile, the pneumatic disc brake of the embodiment has the advantages that the components are easy to assemble, enough assembly space is provided for assembly during assembly, the traditional bearing assembly 42 arranged on the pressure arm 13 is not used, and the cost is lower. Meanwhile, the assembly precision of all parts of the whole clamp body 1 is reliable, and the brake block slides up and down stably. The air disc brake is stable in braking and quick and reliable in returning, and meanwhile, the roller 14 of the pressure arm assembly moves in a rolling mode, and the roller 14 is in surface contact with the caliper body 1, so that the air disc brake cannot cause large load to the local part of the caliper body 1, the service life of the air disc brake is prolonged, and the failure rate is reduced.
Example 2
The present embodiment discloses a method for machining the caliper body 1 of embodiment 1.
Firstly, the clamping process needs to limit one degree of freedom of the clamp body 1. The clamping process utilizes a horizontal machining center for machining. First assembly chamber 2 includes to the bellied second chamber 9 in back, the left and right sides setting in first assembly chamber 2 is formed with location platform 10, location platform 10 place highly is less than the height at first assembly chamber 2 up end place, be formed with column pinhole 30 on the location platform 10, the outside of column pinhole 30 is provided with location shoulder 11, location shoulder 11 integrated into one piece is on location platform 10, in this embodiment well, column pinhole 30 is the pipe fitting, the pipe fitting forms an organic whole with pincers body 1, and the shaping has the strengthening rib between the lateral wall of pipe fitting and the pincers body 1. And the left side and the right side of the lower end back of the forceps body 1 are both provided with a positioning groove 12, and the inner side surface of the positioning groove 12 is a positioning surface. By adopting the structure, the limitation of 1 degree of freedom of the clamp body can be realized during installation, the clamp body can be conveniently machined on a horizontal machining center, and the accuracy of the size of each position is ensured. The positioning groove 12 is in a tetrahedron shape, so that the positioning groove 12 can limit in two directions, and a forming process is optimized; the lower end of the front end face of the pliers body 1 is provided with a plane used for clamping and serving as a pressing point.
The following description is made with reference to fig. 5 for the upper, lower, left, right, front and rear positions, and since a horizontal machining center is used, fig. 5 shows an initial state when the caliper body 1 is clamped.
Positioning in the up-down direction: the upper end surface of the positioning groove 12, the lower side surface of the positioning shoulder 11 and two surfaces which are symmetrical at the other side are used as positioning surfaces, and the end surface of the upper side caliper body 1 of the positioning groove 12, the upper end surface of the positioning shoulder 11 and points which are symmetrical on the two end surfaces at the other side are used as pressing points; the positioning in the up-and-down direction is realized;
positioning in the left-right direction: the left side surface of the positioning groove 12 and the left side surface of the positioning groove 12 on the other symmetrical side are positioning surfaces, and the end surface of the left end positioning table 10 and the point on the end surface of the positioning table 10 chopped into the other side are selected as compaction points; the positioning in the left and right directions is realized;
positioning in the front-back direction: the front end face and the rear end face of the outer side wall of the second cavity 9 are used as positioning faces to realize positioning in the front-rear direction.
And after the positioning is finished, processing is carried out in a horizontal processing center, and the processing steps are as follows:
step one, clamping and positioning an integrally formed clamp body;
step two, processing the end surface of the shaft hole 3 and the end surface of the pin hole 30;
step three, machining the shaft hole 3 and the pin hole 30; after the processing is finished, the shaft hole 3 and the pin hole 30 need to be sealed,
step four, processing a bolt fixing hole 73 on the end surface of the lower end opening of the first assembling cavity 2 for fixing the support base pressing plate 32; wherein, the positioning table 10 is also provided with a bolt fixing hole 73 which penetrates through the end surface of the lower end of the first assembly cavity 2;
fifthly, rotating the fixture, machining the side wall of the first assembly cavity 2, and machining a matching notch 5 on the stress part 4 through a machining process hole 6; after the machining is finished, the fabrication hole 6 needs to be sealed;
and step six, rotating the fixture, processing the side wall opposite to the side wall of the first assembling cavity 2 in the step six, processing a matched notch 5 on the stress part 4 by processing a fabrication hole 6 on the side wall of the other side, and sealing the fabrication hole 6 after processing. Wherein the tooling holes 6 are machined by a cutter. And a step between the third step and the fourth step, which is to process a bracket fixing hole 70, wherein the bracket fixing hole 70 is used for fixing the abrasion alarm line.
Example 3
This embodiment is different from embodiment 1 in that: the fabrication hole 6 is a hole formed primarily during the casting of the caliper body 1 and then is formed by machining.
Example 4
As shown in fig. 12 and 13, the present embodiment discloses a method of assembling the brake of embodiment 1, comprising the steps of:
step one, the brake comprises a sealing seat 19 for sealing the fabrication hole 6, and the sealing seat 19 is hermetically arranged in the fabrication hole 6 on the left side and the right side of the first assembly cavity 2; wherein, the sealing seat 19 is provided with a sealing groove which is provided with an O-shaped ring, thereby realizing the sealing between the sealing seat 19 and the inner wall of the fabrication hole 6;
step two, pressing the pin bushing 80 into the two pin holes 30 of the caliper body 1, and installing the pin sheath 81;
step three, fixing the bracket 36 on a production line assembly tool;
step four, correspondingly installing the two pins 50 into the pin holes 30 of each pin, installing one end of each pin 50 into the bracket positioning hole 82, sleeving the sealing edge of the pin sheath 81 into the pin 50 groove, and inserting the pin 50 into the pin 50 through bolts to fix the pin 50 on the bracket 36;
step five, the rolling shaft 6 is arranged in the two matching notches 5 of the clamp body 1; during assembly, the roller 6 needs to be oiled;
sixthly, mounting the pressure arm assembly on the roller 6; the pressure arm assembly comprises a pressure arm 13 and a pressure arm bushing mounted in a pressure arm mounting groove 18; the pressure arm bushing is also oiled;
step seven, assembling a bearing assembly 42 on the regulator assembly 17, and assembling the whole regulator assembly on the pressure arm assembly;
step eight, installing the adjusting rod sheath 85 in the extension opening 52 of the supporting seat pressing plate 32, coating sealant on the plane, installing the whole supporting seat pressing plate 32 on the end surface of the lower end of the first assembling cavity 2 of the caliper body, installing the return spring 33 on the supporting seat pressing plate 32, wherein the return spring 33 is installed in the limiting opening 91 on the supporting seat pressing plate 32, and screwing down and fixing the supporting seat pressing plate 32 by using an inner hexagonal cylindrical head bolt; the sealing edge of the adjusting rod sheath 85 is fixed on the adjuster assembly 17;
step nine, the supporting seat pressing plate 32 is fixed on the clamp body 1 through the bolt fixing hole 86 by a bolt; the upper end of the pin 50 is provided with a dust cover 30;
step ten, mounting the brake push plate 41, the upper brake block 39 and the lower brake block 40 on the bracket 32, mounting the retaining spring 38 on the brake push plate 41, the upper brake block 39 and the lower brake block 40, then mounting the pressure plate assembly 37, and fixing the pressure plate assembly 37 on the caliper body 1.
And step eleven, a sealing gasket and a plug are arranged on the shaft hole 3.
Example 5
Different from the embodiment 1, the partial side line of the section of the fabrication hole 6 in the embodiment coincides with the projection of the side line of the section of the opening of the assembly groove 18 along the axial direction of the opening of the assembly groove 18, and the structure limits the fabrication hole 6 and the matching notch 5 to be arranged in the same axial line and the same radius, so that the processing precision can be ensured.
Example 6
Different from embodiment 1, the number of fabrication holes 6 is one, and limit surface 7 is not provided, so during processing, only one fabrication hole 6 needs to be continuously processed, two matching notches 5 are processed, and the matching notches 5 penetrate through the left end surface and the right end surface of the stress part 4 where the matching notches are respectively located.
Example 7
This embodiment is different from embodiment 1 in that: the number of the stress parts 4 is one, and the middle part of the stress part 4 is provided with an assembling space for assembling the pressure arm component of the adjuster assembly 17.
Example 8
This embodiment is different from embodiment 1 in that: the projection of the stopper portion 21 in the axial direction of the roller 14 covers the portion of the roller 14 projected in the axial direction of the roller 14.
Example 9
This embodiment is different from embodiment 1 in that: the retaining springs 38 have 4 snap-in openings 45, which are distributed in pairs on both sides of the pressure plate assembly 37.
Example 10
This embodiment is different from embodiment 1 in that: the retaining spring 38 has one snap interface 45, and the snap interfaces 45 are symmetrically disposed along the pressure plate assembly 37.
In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.
Claims (9)
1. The pincers body, its characterized in that: the clamp body is of an integrally formed structure, a first assembly cavity (2) is formed in the clamp body (1), a support frame (34) is formed on the lower side of the first assembly cavity (2), column pin holes (30) are formed in the left side and the right side of the support frame (34), a shaft hole (3) and a pressing hole (31) are formed in the upper end face of the first assembly cavity (2), a stress part (4) is formed in the first assembly cavity (2), a matching notch (5) used for being matched with a rolling shaft (14) is formed in the lower end face of the stress part (4), and the axis of the matching notch (5) is perpendicular to the axis of the shaft hole (3); fabrication hole (6) have been seted up to the side of first assembly chamber (2), and cooperation notch (5) fall into in fabrication hole (6) along the projection region of cooperation notch (5) axis direction along the projection of cooperation notch (5) extending direction.
2. The caliper body according to claim 1, wherein: the number of the process holes (6) is two, the two process holes are respectively arranged on the left side wall of the first assembly cavity (2) and the right side wall of the first assembly cavity (2), and the process holes (6) and the matching notches (5) are arranged coaxially; the number of the matching notches (5) is two, and the matching notches are distributed on the left side and the right side of the shaft hole (3); a limiting surface (7) used for limiting the rolling shaft (14) is formed at one end, close to the shaft hole (3), of each matching notch (5), and one end, far away from the shaft hole (3), of each matching notch is communicated with the technical hole (6) in a through state; the number of the stress parts (4) is two, the stress parts are distributed on two sides of the axis of the shaft hole (3), and the lower end surface of each stress part (4) is provided with a matching notch (5); an installation groove (8) is formed between the stress part (4) and the left side face and the right side wall of the first assembly cavity (2), and the fabrication holes (6) and the assembly groove (18) are distributed on two sides of the installation groove (8).
3. The integrated caliper body according to claim 1, wherein: first assembly chamber (2) are including bellied second chamber (9) to the back, the left and right sides setting in first assembly chamber (2) is formed with location platform (10), location platform (10) place highly is less than first assembly chamber (2) up end place height, be formed with column pinhole (30) on location platform (10), the outside of column pinhole (30) is provided with location shoulder (11), location shoulder (11) set up on location platform (10), the left side and the right side of the lower extreme of pincers body (1) all are provided with constant head tank (12), the medial surface of constant head tank (12) is the locating surface.
4. The clamp body machining method is characterized in that: the clamp body is the clamp body as claimed in claim 1, claim 2 or claim 3, and the machining method comprises the following steps:
the method comprises the following steps that firstly, a clamp is used for clamping and positioning an integrally formed clamp body;
step two, processing the end surface of the shaft hole (3) and the end surface of the pin hole (30);
step three, machining the shaft hole (3) and the pin hole (30);
fourthly, rotating the clamp, machining the side wall of the first assembling cavity (2), and machining and forming a matching notch (5) on the stress part (4) through a machining process hole (6);
fifthly, rotating the clamp, machining bolt fixing holes (73) on the mounting surface and the surface of a first assembly cavity (2) supporting seat pressure plate, and machining the brake block braking surface at the tail of the clamp body;
and step six, rotating the fixture, machining the side wall opposite to the side wall of the first assembling cavity (2) in the step six, and machining a matched notch (5) on the stress part (4) through machining a process hole (6) on the side wall on the other side.
5. The method of claim 4, wherein: the process hole (6) is formed by machining a cutter or casting.
6. The method of claim 5, wherein: and step three, machining a support fixing hole (70), wherein the support fixing hole (70) is used for fixing the abrasion alarm line.
7. The method of claim 4, wherein: the clamp is a horizontal machining center.
8. The assembly method of the brake is characterized in that: the caliper body (1) according to claim 1 or claim 2, wherein the brake comprises an adjuster assembly (17), a pin (50) and a pin assembly, a support pressure plate (32), a return spring (38), a brake push plate (41), an upper brake block (39), a lower brake block (40), a pressure plate assembly (37) and a pressure arm assembly, and the assembling process comprises the following steps:
the brake comprises a sealing seat (19) for sealing the process holes (6), wherein the sealing seat (19) is hermetically arranged in the process holes (6) on the left side and the right side of the first assembly cavity (2);
secondly, pressing a pin bushing (80) into two pin holes (30) of the clamp body (1), and installing a pin sheath (81);
thirdly, fixing the bracket (36) on a production line assembly tool;
step four, correspondingly installing the two pins (50) into the pin holes (30) respectively, installing one ends of the pins (50) into the support positioning holes (82), sleeving the sealing edges of the pin sheaths (81) into the slots of the pins (50), and inserting the pins (50) into the pins (50) by bolts to fix the pins (50) on the support (36);
step five, the rolling shaft (6) is arranged in the two matching notches (5) of the pliers body (1);
sixthly, mounting the pressure arm assembly on a rolling shaft (6);
step seven, assembling a bearing assembly (42) on the adjuster assembly (17), and assembling the whole adjuster assembly on the pressure arm assembly;
step eight, installing an adjusting rod sheath (85) in an extension opening (52) of a supporting seat pressing plate (32), coating sealant on the plane, installing the whole supporting seat pressing plate (32) on the end face of the lower end of a first assembly cavity (2) of the clamp body, installing a return spring (33) on the supporting seat pressing plate (32), and fixing the supporting seat pressing plate (32) on the first assembly cavity (2) by using a fixing piece; the sealing edge of the adjusting rod sheath (85) is fixed on the adjuster assembly (17);
step nine, mounting a brake push plate (41), an upper brake block (39) and a lower brake block (40) on the bracket (32), mounting a retaining spring (38) on the brake push plate (41), the upper brake block (39) and the lower brake block (40), then mounting a pressure plate assembly (37), and fixing the pressure plate assembly (37) on the caliper body (1).
9. The method of assembling a brake of claim 7, further comprising the steps of: the end face of the upper part of the pin hole (30) is provided with a positioning table (10), and the positioning table (10) is provided with a bolt fixing hole (86); the bolt fixes the supporting seat pressing plate (32) on the clamp body (1) through the bolt fixing hole (86); the upper end of the pin (50) is provided with a dustproof cover, and the shaft hole (3) is provided with a sealing gasket and a plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911111622.0A CN110985568A (en) | 2019-11-14 | 2019-11-14 | Clamp body, clamp body machining method and brake assembling method with clamp body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911111622.0A CN110985568A (en) | 2019-11-14 | 2019-11-14 | Clamp body, clamp body machining method and brake assembling method with clamp body |
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| CN110985568A true CN110985568A (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911111622.0A Pending CN110985568A (en) | 2019-11-14 | 2019-11-14 | Clamp body, clamp body machining method and brake assembling method with clamp body |
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| CN (1) | CN110985568A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111716102A (en) * | 2020-06-28 | 2020-09-29 | 湖北唯思凌科装备制造有限公司 | Assembling device for automobile caliper pressure seat assembly |
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| US5927445A (en) * | 1995-04-27 | 1999-07-27 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Disc brake for vehicles having insertable actuator |
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