CN210232262U

CN210232262U - Drilling tool for steering knuckle

Info

Publication number: CN210232262U
Application number: CN201920730758.9U
Authority: CN
Inventors: Kai Wang; 王凯; Zhendong Xu; 徐振冬; Qi Chen; 陈琦
Original assignee: Alion Manufacturing & Engineering Ltd
Current assignee: Alion Manufacturing & Engineering Ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2020-04-03
Anticipated expiration: 2029-05-21

Abstract

The utility model relates to a knuckle drilling frock, comprising a base plate, be provided with the holding surface that the hole machining lateral surface laminating of a yoke that supplies to process the knuckle supports on the bottom plate, be provided with the riser on the bottom plate, be provided with the spacing groove that supplies to treat two yoke spacing installations of processing the knuckle on the riser, two cell walls of spacing groove are used for respectively with the cooperation of two opposite flank limit stops of each yoke, the tank bottom of spacing groove be used for with the cooperation of the terminal surface roof pressure between two above-mentioned opposite flanks of each yoke, set up on the riser or on the bottom plate in the roof pressure structure that is used for the roof pressure to treat the terminal surface of processing the knuckle, still be provided with the compact structure who is used for compressing tightly the hole machining medial surface of the corresponding yoke of processing the knuckle on the bottom plate. The fixture has the advantages that the fixture is firm in clamping the knuckle to be machined and accurate in positioning, vibration amplitude of a workpiece is reduced during drilling, machining quality is improved, a cutter is protected, and the stress of a main shaft is uniform.

Description

Drilling tool for steering knuckle

Technical Field

The utility model belongs to processing frock field, concretely relates to knuckle drilling frock.

Background

The steering knuckle is one of important parts in an automobile steering axle, and can enable an automobile to stably run and sensitively transmit the running direction. The steering knuckle is generally in a fork-shaped structure, a main pin through hole is formed in two fork arms, and a fist-shaped part at the end part of a front shaft is arranged in a space between the two fork arms and is connected together through the main pin, so that a front wheel can deflect around the main pin for a certain angle to steer the automobile.

When a main pin through hole on a steering knuckle is processed, a conventional clamp is generally adopted to clamp and fix the steering knuckle to be drilled at present, however, the conventional clamp is unstable in clamping the steering knuckle in the processing process, so that the steering knuckle to be drilled is large in jumping, the problems of severe vibration of a cutter and uneven stress of a main shaft are caused, the cutter is easily damaged, the drilling quality is poor, and the processing efficiency is correspondingly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a firm, the accurate knuckle drilling frock in location of centre gripping.

In order to achieve the above object, the utility model discloses a knuckle drilling frock adopts following technical scheme: the utility model provides a knuckle drilling frock, including the bottom plate, be provided with the holding surface that supplies the spot facing work lateral surface laminating support of a yoke of waiting to process the knuckle on the bottom plate, be provided with the riser on the bottom plate, be provided with the spacing groove that supplies the spacing installation of two yokes of waiting to process the knuckle on the riser, two cell walls of spacing groove are used for respectively with the spacing stop cooperation of two opposite sides of each yoke, the tank bottom of spacing groove is used for with the terminal surface roof pressure cooperation between above-mentioned two opposite sides of each yoke, set up in the roof pressure structure that is used for the roof pressure to treat the terminal surface of processing knuckle on the riser or on the bottom plate, still be provided with the compact structure who is used for compressing tightly the spot facing work medial surface of the corresponding yoke of waiting to process the knuckle on the.

The jacking structure comprises a transverse screw rod connected to the vertical plate, a first strip-shaped pressing plate which is used for being in jacking fit with the end face of the knuckle to be processed penetrates through the transverse screw rod, and a compression nut is arranged on the transverse screw rod.

The number of the transverse screws is two, the transverse screws are arranged on two sides of the limiting groove in parallel and opposite, and the first strip-shaped pressing plate is at least provided with a U-shaped groove which is used for allowing an opening corresponding to the penetration of the transverse screws to extend along the width direction of the first strip-shaped pressing plate.

The pressing structure comprises a vertical screw connected to the bottom plate, a second strip-shaped pressing plate used for jacking and pressing the hole machining inner side face of the corresponding fork arm of the knuckle to be machined penetrates through the vertical screw, and a locking nut is arranged on the vertical screw.

The bottom plate is provided with a limiting column, the height of the limiting column is equal to the size of the corresponding fork arm of the knuckle to be processed in the axial direction of the main pin through hole, one end of the second strip-shaped pressing plate is in top pressure fit with the inner side face of the corresponding fork arm of the knuckle to be processed in a hole processing mode, and the other end of the second strip-shaped pressing plate is in top pressure fit with the end face of the limiting column.

And a balancing weight is arranged on the bottom plate.

The utility model has the advantages that: the limiting groove is used for limiting and mounting two fork arms of the steering knuckle to be processed, and the jacking structure is matched with the groove bottom of the limiting groove to be used and is pressed in one direction perpendicular to the axis of the main pin through hole to be drilled; the two groove walls of the limiting groove are compressed in the other direction perpendicular to the axis of the main pin through hole to be drilled; the supporting surface and the pressing structure are respectively matched with the hole machining outer side surface and the hole machining inner side surface of one fork arm of the steering knuckle to be machined in a pressing mode so as to press in the axial direction of a main pin through hole to be drilled. The fixture has the advantages that the fixture is firm in clamping the knuckle to be machined and accurate in positioning, vibration amplitude of a workpiece is reduced during drilling, machining quality is improved, a cutter is protected, and the stress of a main shaft is uniform.

Drawings

Fig. 1 is a schematic view of a use state of an embodiment of a knuckle drilling tool of the present invention;

FIG. 2 is a first schematic structural diagram of the knuckle drilling tool in FIG. 1;

FIG. 3 is a structural schematic view II of the knuckle drilling tool in FIG. 1;

fig. 4 is a schematic structural diagram three of the knuckle drilling tool in fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.

The utility model discloses an embodiment of knuckle drilling frock, as shown in fig. 1-4, including bottom plate 1, be provided with the holding surface 22 that supplies to wait to process the laminating support of spot facing work lateral surface 7 of a yoke 4 of knuckle 13 on the bottom plate 1. The bottom plate 1 is provided with a vertical plate 2, the vertical plate 2 is provided with a limiting groove 3 for limiting and mounting two fork arms 4 of a steering knuckle 13 to be processed, two groove walls 9 of the limiting groove 3 are respectively used for limiting and stopping and matching with two opposite side surfaces 5 of each fork arm 4, and the groove bottom of the limiting groove 3 is used for being in jacking fit with an end surface 6 between the two opposite side surfaces of each fork arm 4. The vertical plate 2 is also provided with a jacking structure for jacking and pressing the end face of the knuckle to be processed. The jacking structure is matched with the groove bottom of the limiting groove for use, and the jacking structure and the groove bottom of the limiting groove are compacted together in one direction perpendicular to the axis of the main pin through hole to be drilled. The two groove walls of the limiting groove are compressed in the other direction perpendicular to the axis of the main pin through hole to be drilled.

The jacking structure comprises a transverse screw rod 10 connected to the vertical plate, a first strip-shaped pressing plate 11 which is used for being in jacking fit with an end face 12 of the knuckle to be processed penetrates through the transverse screw rod 10, and a compression nut 14 is arranged on the transverse screw rod 10. The number of the transverse screws 10 is two, and the transverse screws are arranged on two sides of the limiting groove in parallel and oppositely, one end of the first strip-shaped pressing plate 11 is provided with a U-shaped groove 15, which is used for allowing an opening for the corresponding transverse screw to penetrate through to extend along the width direction of the first strip-shaped pressing plate. The design of U-shaped groove 15 guarantees that first bar clamp plate easy dismounting need not all withdraw two gland nuts, only needs two gland nuts of unscrewing can rotate first bar clamp plate, the putting into and taking out of the knuckle of being convenient for.

The bottom plate 1 is also provided with a pressing structure for pressing the hole machining inner side surface 8 of the corresponding fork arm 4 of the knuckle 13 to be machined. The support surface 22 and the hold-down structure are respectively in press fit with the hole machining outer side surface and the hole machining inner side surface of one yoke of the knuckle to be machined so as to hold down in the axial direction of the kingpin through hole to be drilled. The pressing structure comprises a vertical screw rod 17 connected to the bottom plate 1, a second strip-shaped pressing plate 18 used for jacking and pressing the hole machining inner side surface 8 of the corresponding fork arm of the knuckle to be machined penetrates through the vertical screw rod 17, and a locking nut 19 is arranged on the vertical screw rod 17. The bottom plate 1 is provided with a limiting column 20, the height of the limiting column 20 is equal to the size of the corresponding fork arm 4 of the knuckle 13 to be processed in the direction of the main pin through hole axis, one end of the second strip-shaped pressing plate 18 is in jacking fit with the hole processing inner side surface 8 of the corresponding fork arm of the knuckle to be processed, and the other end of the second strip-shaped pressing plate 18 is in jacking fit with the end surface of the limiting column 20. The number of the compression structures in the embodiment is two, and correspondingly, the number of the limiting columns is also two. The bottom plate 1 is provided with two reinforcing rib plates 21 connected with the vertical plate, and the two reinforcing rib plates 21 are arranged in parallel at intervals. The bottom plate 1 is also provided with a counterweight 16, and the counterweight 16 is positioned between the two reinforcing rib plates 21. The counterweight block 16 is provided with a connecting hole, and a connecting bolt is arranged in the connecting hole in a penetrating way and connected to the bottom plate. The effect of balancing weight is, because whole frock all will rotate along with the main shaft of lathe when drilling, sets up the balancing weight and can reduce the mass eccentric distance when the main shaft is rotatory in the course of working. Eliminate the vibration caused by centrifugal force, reduce the vibration of the main shaft of the machine tool and ensure the processing precision.

When the positioning device is used, the base plate is arranged on a machine tool and rotates along with a main shaft of the machine tool, the two fork arms of the steering knuckle to be processed are arranged in the limiting groove, three corresponding side surfaces of the fork arms are in contact with two groove walls and a groove bottom of the limiting groove to limit, the center of the hole processing side surface of each fork arm is located at the center of the base plate, and the positioning is accurate by adopting a limiting groove positioning mode. The jacking structure is matched with the groove bottom of the limiting groove for use, and the jacking structure and the groove bottom of the limiting groove are compacted together in one direction perpendicular to the axis of the main pin through hole to be drilled. The two groove walls of the limiting groove are compressed in the other direction perpendicular to the axis of the main pin through hole to be drilled. The support surface 22 and the pressing structure are respectively in press fit with a hole machining outer side surface and a hole machining inner side surface of one yoke of the knuckle to be machined so as to press in the axial direction of a kingpin through hole to be drilled. The fixture has the advantages that the fixture is firm in clamping the knuckle to be machined and accurate in positioning, vibration amplitude of a workpiece is reduced during drilling, machining quality is improved, a cutter is protected, and the stress of a main shaft is uniform.

In other embodiments of the present invention, U-shaped grooves for the corresponding transverse screws to pass through may be provided at both ends of the first bar-shaped pressing plate; the top pressing structure can also be a vertical plate arranged on the bottom plate, the side surface of the vertical plate is in limit fit with the end surface of the steering knuckle, the limit groove and the vertical plate form a guide structure for guiding installation of the steering knuckle, and the steering knuckle can be guided to be installed in and taken out from one side only; the number of the compaction structures can also be one; the two second strip-shaped press plates can also be replaced by one long press plate.

Claims

1. The utility model provides a knuckle drilling frock which characterized in that: the hole machining support device comprises a bottom plate, a supporting surface is arranged on the bottom plate and used for attaching and supporting the hole machining outer side surface of one fork arm of a knuckle to be machined, a vertical plate is arranged on the bottom plate, a limiting groove is formed in the vertical plate and used for limiting and installing two fork arms of the knuckle to be machined, two groove walls of the limiting groove are respectively used for being matched with two opposite side surface limiting stops of each fork arm, the groove bottom of the limiting groove is used for being in jacking fit with the end surface between the two opposite side surfaces of each fork arm, a jacking structure used for jacking and pressing the end surface of the knuckle to be machined is arranged on the vertical plate or the bottom plate, and a pressing structure used for pressing the hole machining inner side surface of the corresponding fork arm of the knuckle to be.

2. The knuckle drilling tool according to claim 1, characterized in that: the jacking structure comprises a transverse screw rod connected to the vertical plate, a first strip-shaped pressing plate which is used for being in jacking fit with the end face of the knuckle to be processed penetrates through the transverse screw rod, and a compression nut is arranged on the transverse screw rod.

3. The knuckle drilling tool according to claim 2, characterized in that: the number of the transverse screws is two, the transverse screws are arranged on two sides of the limiting groove in parallel and opposite, and the first strip-shaped pressing plate is at least provided with a U-shaped groove which is used for allowing an opening corresponding to the penetration of the transverse screws to extend along the width direction of the first strip-shaped pressing plate.

4. The knuckle drilling tool according to any one of claims 1 to 3, wherein: the pressing structure comprises a vertical screw connected to the bottom plate, a second strip-shaped pressing plate used for jacking and pressing the hole machining inner side face of the corresponding fork arm of the knuckle to be machined penetrates through the vertical screw, and a locking nut is arranged on the vertical screw.

5. The knuckle drilling tool according to claim 4, wherein: the bottom plate is provided with a limiting column, the height of the limiting column is equal to the size of the corresponding fork arm of the knuckle to be processed in the axial direction of the main pin through hole, one end of the second strip-shaped pressing plate is in top pressure fit with the inner side face of the corresponding fork arm of the knuckle to be processed in a hole processing mode, and the other end of the second strip-shaped pressing plate is in top pressure fit with the end face of the limiting column.

6. The knuckle drilling tool according to claim 1, characterized in that: and a balancing weight is arranged on the bottom plate.