CN214557497U

CN214557497U - Tool assembly for machining brake caliper piston hole

Info

Publication number: CN214557497U
Application number: CN202121184337.4U
Authority: CN
Inventors: 陈俊斌; 胡宗君
Original assignee: Yuhuan Jianghong Machinery Co ltd
Current assignee: Yuhuan Jianghong Machinery Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-11-02
Anticipated expiration: 2031-05-31

Abstract

The utility model provides a cutter assembly for processing braking pincers piston hole belongs to mechanical technical field. It has solved the inconvenient scheduling problem of current braking pincers piston hole processing. This a cutter assembly for processing braking pincers piston hole includes the casing, input shaft and output shaft, the input shaft is inserted in the casing, the outer wall of the outer end of input shaft has the protruding circle of radial evagination, the middle part of protruding circle has the round ring channel, the protruding circle is seted up the symmetry and is set up and communicate in the card income groove of ring channel, the outer tip of input shaft is the conical surface to this section outer wall of protruding circle, the lower part of casing is the extension arm, be equipped with bevel gear one in the extension arm, the extension arm is close to bottom department and wears to be equipped with the horizontally output shaft, the inner of output shaft links firmly bevel gear two that meshes bevel gear one, the outer end of output shaft stretches out extension arm and detachably is connected with the blade holder, blade holder circumference equipartition has the chip groove, all link firmly alloy sword piece in every chip groove. The utility model has the advantages of good applicability, convenient processing, etc.

Description

Tool assembly for machining brake caliper piston hole

Technical Field

The utility model belongs to the technical field of machinery, a cutter assembly is related to, in particular to a cutter assembly for processing braking pincers piston hole.

Background

Chinese patent literature discloses an internal cooling combined tool [ application number: 201420450182.8, respectively; authorization notice number: CN204135360U ], it includes the cutter arbor, and the cutter arbor afterbody is equipped with the connecting hole and cooperates with outside lathe axle, is equipped with interior cold water passageway in the cutter arbor, and the cutter arbor front end is equipped with the seal groove tool bit, and the seal groove tool bit passes through the cutter arbor cooperation transition to fix and adjust its position through two housing screw and a radial adjusting screw, the both sides that the cutter arbor is close to the seal groove tool bit are equipped with the finish turning blade, and the finish turning blade is equipped with the dust cover outward.

The internal cooling combined tool is suitable for processing a high-precision annular groove in a piston hole of the brake caliper, and the cutter bar and the machine tool shaft are of a coaxial structure, so that the axis of the piston hole of the brake caliper is required to be coaxially arranged with the cutter bar and the machine tool shaft, the cutter bar penetrates through two jaws of the brake caliper to be processed, the two jaws are required to have enough space for yielding, otherwise, interference exists, the processing is influenced, the applicability is poor, the connection between the cutter bar and the machine tool shaft is not firm enough, and the processing precision is influenced.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a cutter assembly that is used for processing braking pincers piston hole that the suitability is good, the machining precision is high.

The purpose of the utility model can be realized by the following technical proposal: a cutter assembly for machining a piston hole of a brake caliper comprises a shell, an input shaft and an output shaft, wherein the input shaft is inserted into the shell, and the cutter assembly is characterized in that the outer wall of the input shaft, which extends out of the outer end of the shell, is provided with a convex ring protruding outwards in the radial direction, the middle part of the convex ring is provided with a ring-shaped groove, the end part, facing the outer end of the input shaft, of the convex ring is provided with clamping grooves which are symmetrically arranged and communicated with the ring-shaped groove, the section from the outer end of the input shaft to the convex ring is a conical surface, the lower part of the shell is a vertical downward extension arm, a first bevel gear fixedly connected with the inner end of the input shaft in the circumferential direction is arranged in the extension arm, a horizontal output shaft penetrates through the extension arm and is arranged at the position close to the bottom of the extension arm, the inner end of the output shaft is fixedly connected with a second bevel gear meshed with the first bevel gear, the outer end of the output shaft extends out of the extension arm and is detachably connected with cutter seats, and chip grooves are uniformly distributed in the circumferential direction on the cutter seats, an alloy knife block is fixedly connected in each chip groove.

In the above-mentioned cutter assembly for processing a brake caliper piston hole, the blade holder is cylindrical and is sleeved on the outer end of the output shaft, the output shaft is provided with steps for supporting the inner end of the blade holder, the outer wall of the steps is provided with symmetrical cutting surfaces, the blade holder is provided with a protruding part which protrudes outwards in the axial direction and is attached to the cutting surfaces, a pressing cap is arranged in the blade holder, the blade holder is provided with a retaining shoulder for blocking the pressing cap, a countersunk screw penetrates through the retaining shoulder and is in threaded connection with the output shaft, and the head of the countersunk screw acts on the pressing cap so that the blade holder is fixed between the pressing cap and the steps.

In the above cutter assembly for machining the piston hole of the brake caliper, the output shaft is sleeved with three first bearings which are mutually abutted, the output shaft is provided with a blocking shoulder which is abutted against an inner ring of the outermost bearing, the extension arm is embedded with a first blocking ring which is abutted against an outer ring of the outermost bearing in an interference fit manner, the extension arm is provided with a covered edge which is coated on the outer sides of the three first bearings, the covered edge is provided with a turned edge which is turned inwards and blocks an outer ring of the innermost bearing, the output shaft is sleeved with a blocking ring which is abutted against the inner ring of the innermost bearing, the other side of the blocking ring is abutted against the inner side end face of the two bevel gears, and the output shaft is in threaded connection with a nut which is abutted against the outer side end face of the bevel gears.

In the above mentioned tool assembly for machining the piston hole of the brake caliper, the first blocking ring is embedded with the first annular sealing ring which is sealed on the outer wall of the output shaft.

In the above tool assembly for machining the piston hole of the brake caliper, the first bevel gear is sleeved with the second bearing, the first bevel gear is provided with a step abutting against the inner ring of the second lower bearing, the extension arm is provided with a step abutting against the outer ring of the second lower bearing, the first bevel gear is in threaded connection with two abutting nuts, the lower nut abuts against the inner ring of the second upper bearing, the extension arm is in threaded connection with two abutting thread sleeves, and the lower thread sleeve abuts against the outer ring of the second upper bearing.

In the above tool assembly for machining the piston hole of the brake caliper, the lower end of the input shaft is provided with a blind hole, the inner wall of the blind hole is provided with symmetrically arranged positioning planes, the end part of the first bevel gear is inserted into the blind hole, and the end part is provided with a cutting surface attached to the positioning planes.

In the above tool assembly for machining a piston hole of a brake caliper, the input shaft is sleeved with two third bearings, the input shaft is in threaded connection with a lock nut which abuts against the inner ring of the third lower bearing, the housing is provided with a step which abuts against the outer ring of the third lower bearing, the input shaft is provided with a step which abuts against the inner ring of the third upper bearing, and the housing is embedded with a second retaining ring which abuts against the outer ring of the third upper bearing in an interference fit manner.

In the above mentioned tool assembly for machining the piston hole of the brake caliper, the second ring seal, which is annular and sealed on the outer wall of the input shaft, is embedded in the second baffle ring.

Compared with the prior art, the cutter assembly for processing the brake caliper piston hole has the advantages of good applicability, low use cost, high transmission precision, high processing efficiency, high processing precision and long service life.

Drawings

FIG. 1 is a perspective view of the present tool assembly for machining a piston bore of a brake caliper.

FIG. 2 is a cross-sectional view of the construction of the present tool assembly for machining a piston bore of a brake caliper.

Fig. 3 is a perspective view of the tool assembly for machining a piston hole of a caliper with a housing removed.

Fig. 4 is a perspective view of the tool assembly for machining a piston hole of a caliper with the housing and the input shaft removed.

In the figure, 1, a housing; 2. an input shaft; 3. an output shaft; 4. a convex ring; 5. an annular groove; 6. a clamping groove is formed; 7. a conical surface; 8. an extension arm; 9. a first bevel gear; 10. a second bevel gear; 11. a tool apron; 111. a projection; 12. a chip groove; 13. an alloy cutter block; 14. pressing the cap; 15. countersunk head screws; 16. a first bearing; 17. a first baffle ring; 18. edge covering; 19. a retainer ring; 20. a nut; 21. a first sealing ring; 22. a second bearing; 23. a nut; 24. a threaded sleeve; 25. cutting the surface; 26. a third bearing; 27. locking the nut; 28. a second baffle ring; 29. and a second sealing ring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, the cutter assembly for processing a piston hole of a brake caliper comprises a housing 1, an input shaft 2 and an output shaft 3, wherein the input shaft 2 is inserted into the housing 1, the outer wall of the input shaft 2 extending out of the outer end of the housing 1 is provided with a convex ring 4 protruding outwards in the radial direction, the middle part of the convex ring 4 is provided with a ring-shaped groove 5, the end part of the convex ring 4 facing the outer end of the input shaft 2 is provided with clamping grooves 6 symmetrically arranged and communicated with the ring-shaped groove 5, the outer end part of the input shaft 2 to the convex ring 4 is provided with a conical surface 7, the lower part of the housing 1 is a vertically downward extension arm 8, the extension arm 8 is internally provided with a first bevel gear 9 circumferentially fixedly connected with the inner end of the input shaft 2, the extension arm 8 is provided with a horizontal output shaft 3 in the position close to the bottom in a penetrating manner, the inner end of the output shaft 3 is fixedly connected with a second bevel gear 10 meshed with the first bevel gear 9, the outer end of the output shaft 3 extends out of the extension arm 8 and is detachably connected with a cutter holder 11, the tool apron 11 is circumferentially and evenly provided with chip grooves 12, and each chip groove 12 is fixedly connected with an alloy cutter block 13.

When the cutter assembly for machining the brake caliper piston hole is used, the outer end of the input shaft 2 is inserted into the main shaft, the clamping groove 6 is used for enabling the claw clamp of the main shaft to slide into the annular groove 5, then the input shaft 2 is rotated, the main shaft clamps the outer end of the input shaft 2 through the action of the pull rod structure, the conical surface 7 enables the input shaft 2 to be tightly combined with the main shaft, the transmission is stable, and the machining precision is guaranteed; during machining, the extension arm 8 extends into a jaw of the brake caliper, the problem of jaw interference does not exist, the body of the brake caliper does not need to be changed, the applicability is good, and then the brake caliper moves along with a tool, so that the alloy knife block 13 is machined into a piston hole; in the course of working, input shaft 2 rotates along with the main shaft, input shaft 2 drives bevel gear 9 and rotates, bevel gear 9 drives bevel gear two 10 and rotates, bevel gear two 10 drives output shaft 3 and rotates, thereby make blade holder 11 rotatory, alloy cutter block 13 rotary cutting is with the processing piston hole, bevel gear 9 and bevel gear two 10 cooperation make transmission stability good, and compact structure, alloy cutter block 13's cutting effect is good, machining efficiency is high, machining precision is high, after alloy cutter block 13 weares and teares, removable blade holder 11 has reduced use cost.

In more detail, the tool apron 11 is cylindrical and is sleeved on the outer end of the output shaft 3, the output shaft 3 is provided with steps for the inner end of the tool apron 11 to abut against, the outer wall of each step is provided with symmetrical cutting surfaces 25, the tool apron 11 is provided with a protruding part 111 which protrudes outwards in the axial direction and is attached to the corresponding cutting surface 25, a pressing cap 14 is arranged in the tool apron 11, the tool apron 11 is provided with a retaining shoulder for blocking the pressing cap 14, a countersunk screw 15 penetrates through the retaining shoulder and is in threaded connection with the output shaft 3, and the head of the countersunk screw 15 acts on the pressing cap 14 to enable the tool apron 11 to be fixed between the pressing cap 14 and the steps, so that the tool apron 11 is stably positioned and is convenient to connect; during actual manufacturing, the cylindrical tool apron 11 is sleeved on the output shaft 3, and a plurality of circumferentially and uniformly distributed screws radially penetrate through the tool apron 11 and are in threaded connection with the output shaft 3, so that the tool apron 11 is detachably connected with the output shaft 3.

The output shaft 3 is sleeved with three mutually-butted first bearings 16, the output shaft 3 is provided with a blocking shoulder which is butted against the inner ring of the first bearing 16 at the outermost side, the extension arm 8 is embedded with a first blocking ring 17 which is butted against the outer ring of the first bearing 16 at the outermost side in an interference fit manner, the extension arm 8 is provided with a covered edge 18 which is covered outside the three first bearings 16, the covered edge 18 is provided with a flanged edge which is turned inwards and used for blocking the outer ring of the first bearing 16 at the innermost side, the output shaft 3 is sleeved with a retaining ring 19 which is butted against the inner ring of the first bearing 16 at the innermost side, the other side of the retaining ring 19 is butted against the inner side end surface of the second bevel gear 10, the output shaft 3 is in threaded connection with a nut 20 which is butted against the outer end surface of the second bevel gear 10, the output shaft 3 is fully supported by the three first bearings 16, the transmission of the output shaft 3 is stable, the processing precision is ensured, and the blocking shoulder, the first blocking ring 17, the covered edge 18, the flanged edge and the retaining ring 19 ensure that the three first bearings 16 are stably positioned, axial play does not exist, and the working stability is good; the first blocking ring 17 is embedded with a first sealing ring 21 which is annular and sealed on the outer wall of the output shaft 3, and the first sealing ring 21 prevents machining scraps from entering between the output shaft 3 and the extension arm 8, so that abrasion is avoided, and the service life is prolonged.

Two bearings II 22 are sleeved outside a first bevel gear 9, the first bevel gear 9 is provided with a step which is abutted against the inner ring of the lower bearing II 22, an extension arm 8 is provided with a step which is abutted against the outer ring of the lower bearing II 22, the first bevel gear 9 is in threaded connection with two abutted nuts 23, the lower nut 23 is abutted against the inner ring of the upper bearing II 22, the extension arm 8 is in threaded connection with two abutted threaded sleeves 24, the lower threaded sleeve 24 is abutted against the outer ring of the upper bearing II 22, the bearing II 22 is positioned stably, the bearing II 22 plays a supporting role for the first bevel gear 9, and the transmission stability of the first bevel gear 9 is good; as shown in fig. 2 and 4, the lower end of the input shaft 2 is provided with a blind hole, the inner wall of the blind hole is provided with symmetrically arranged positioning planes, the end part of the bevel gear one 9 is inserted into the blind hole and is provided with a cutting surface 25 attached to the positioning planes, so that the input shaft 2 and the bevel gear one 9 are circumferentially fixedly connected, and certainly, in actual manufacturing, the end part of the bevel gear one 9 extends into the lower end of the input shaft 2, and the bevel gear one 9 and the input shaft 2 are circumferentially fixedly connected through a pin shaft radially penetrating through the end part of the bevel gear one 9 and the input shaft 2.

The input shaft 2 is sleeved with two bearings III 26, the input shaft 2 is in threaded connection with a locking nut 27 abutting against the inner ring of the lower bearing III 26, the shell 1 is provided with a step abutting against the outer ring of the lower bearing III 26, the input shaft 2 is provided with a step abutting against the inner ring of the upper bearing III 26, the shell 1 is embedded with a baffle ring II 28 abutting against the outer ring of the upper bearing III 26 in an interference fit manner, the bearing III 26 is positioned stably, the supporting effect on the input shaft 2 is good, and the input shaft 2 is driven stably; and a second annular sealing ring 29 sealed on the outer wall of the input shaft 2 is embedded in the second baffle ring 28, and the first sealing ring 21 prevents machining debris from entering between the input shaft 2 and the shell 1, so that abrasion is avoided, and the service life is prolonged. In this embodiment, the first bearing 16, the second bearing 22 and the third bearing 26 are all deep groove ball bearings.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A cutter assembly for machining a piston hole of a brake caliper comprises a shell (1), an input shaft (2) and an output shaft (3), wherein the input shaft (2) is inserted into the shell (1), and is characterized in that the outer wall of the input shaft (2) extending out of the outer end of the shell (1) is provided with a convex ring (4) protruding outwards in the radial direction, the middle of the convex ring (4) is provided with a ring-shaped annular groove (5), the end part of the convex ring (4) facing the outer end of the input shaft (2) is provided with clamping grooves (6) symmetrically arranged and communicated with the annular groove (5), the outer wall from the outer end part of the input shaft (2) to the convex ring (4) is a conical surface (7), the lower part of the shell (1) is a vertically downward extension arm (8), a bevel gear I (9) fixedly connected with the inner end of the input shaft (2) in the extension arm (8) in the circumferential direction is arranged in a penetrating mode, and the horizontal output shaft (3) penetrates through the extension arm (8) close to the bottom, the inner of output shaft (3) link firmly bevel gear two (10) that mesh in bevel gear (9), the outer end of output shaft (3) stretches out extension arm (8) and detachably is connected with blade holder (11), blade holder (11) circumference equipartition have chip groove (12), all link firmly alloy sword piece (13) in every chip groove (12).

2. The tool assembly for machining a piston hole of a brake caliper according to claim 1, wherein the tool holder (11) is cylindrical and is fitted over an outer end of the output shaft (3), the output shaft (3) has a step against which an inner end of the tool holder (11) abuts, an outer wall of the step has symmetrical cutting surfaces (25), the tool holder (11) has a projection (111) projecting axially outward and abutting against the cutting surfaces (25), a pressing cap (14) is provided in the tool holder (11), the tool holder (11) has a shoulder for blocking the pressing cap (14), a countersunk screw (15) passes through the shoulder and is threadedly connected to the output shaft (3), and a head of the countersunk screw (15) acts on the pressing cap (14) to fix the tool holder (11) between the pressing cap (14) and the step.

3. A tool assembly for machining brake caliper piston bores according to claim 1 or 2, it is characterized in that the output shaft (3) is sleeved with three mutually butted bearing I (16), the output shaft (3) is provided with a retaining shoulder which is retained against the inner ring of the bearing I (16) at the outermost side, a baffle ring I (17) which is abutted against the outer ring of the outermost side bearing I (16) is embedded in the extension arm (8) in an interference fit manner, the extension arm (8) is provided with a covered edge (18) covered outside the three bearings I (16), the covered edge (18) is provided with a turned edge which is turned inwards and blocks the outer ring of the bearing I (16) at the innermost side, the output shaft (3) is sleeved with a check ring (19) which props against the inner ring of the innermost bearing I (16), the other side of the check ring (19) props against the end surface of the inner side of the bevel gear II (10), the output shaft (3) is in threaded connection with a nut (20) which is abutted against the end face of the outer side of the second bevel gear (10).

4. A tool assembly for machining brake caliper piston bores according to claim 3, characterized in that the first retainer ring (17) has a first annular sealing ring (21) embedded therein and sealed to the outer wall of the output shaft (3).

5. The tool assembly for machining a piston hole of a brake caliper according to claim 4, wherein the first bevel gear (9) is externally sleeved with two second bearings (22), the first bevel gear (9) has a step which abuts against an inner ring of the second lower bearing (22), the extension arm (8) has a step which abuts against an outer ring of the second lower bearing (22), the first bevel gear (9) is in threaded connection with two abutting nuts (23), the lower nut (23) abuts against an inner ring of the second upper bearing (22), the extension arm (8) is in threaded connection with two abutting threaded sleeves (24), and the lower threaded sleeve (24) abuts against an outer ring of the second upper bearing (22).

6. Tool assembly for machining brake caliper piston bores according to claim 5, characterized in that the lower end of the input shaft (2) has a blind bore, the inner wall of which has symmetrically arranged positioning planes, the end of the bevel gear one (9) being inserted into the blind bore and this end having a cutting surface (25) which abuts against the positioning planes.

7. The tool assembly for machining a piston hole of a brake caliper according to claim 6, wherein the input shaft (2) is externally sleeved with two bearings III (26), the input shaft (2) is in threaded connection with a lock nut (27) abutting against an inner ring of the lower bearing III (26), the housing (1) is provided with a step abutting against an outer ring of the lower bearing III (26), the input shaft (2) is provided with a step abutting against an inner ring of the upper bearing III (26), and the housing (1) is embedded with a baffle ring II (28) abutting against an outer ring of the upper bearing III (26) in an interference fit manner.

8. The tool assembly for machining a piston bore of a brake caliper according to claim 7, wherein a second annular sealing ring (29) sealed to the outer wall of the input shaft (2) is fitted into the second retainer ring (28).