CN112355670A

CN112355670A - Inclined oil hole drilling fixture at bottom of hydraulic cylinder

Info

Publication number: CN112355670A
Application number: CN202010671594.4A
Authority: CN
Inventors: 向小斌; 姚泽功; 刘洋; 李婧; 焦冬
Original assignee: Hubei Jiangshan Special Purpose Vehicle Co ltd
Current assignee: Hubei Jiangshan Special Purpose Vehicle Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-02-12
Anticipated expiration: 2040-07-14
Also published as: CN112355670B

Abstract

An inclined oil hole drilling fixture at the bottom of a hydraulic cylinder, comprising a guide positioning mechanism and a sliding locking mechanism mounted on a bottom plate; the guide positioning mechanism includes a mounting plate standing on the bottom plate and a positioning plate vertically mounted on the upper end of the mounting plate , the right side of the mounting plate is a stepped structure, the stepped structure includes a step that is a vertical surface, and a second step that is an inclined surface. The angle between them is the same, the positioning plate is installed on the right side of the first part of the step, the lower end surface of the positioning plate is the inclined plane 1, the angle between the inclined plane 1 and the horizontal plane and the angle between the inclined oil hole at the bottom of the hydraulic cylinder and the horizontal plane are complementary. The positioning plate is provided with positioning holes; the sliding locking mechanism includes two mutually parallel guide rails arranged on the bottom plate, a sliding block slidingly connected to the guide rails, and a locking mechanism. The upper plane of the sliding block is parallel to the lower end surface of the positioning plate. Second, the upper plane of the slider is provided with a V-shaped groove along the central axis; the drilling efficiency is increased by at least 20%.

Description

Inclined oil hole drilling fixture at bottom of hydraulic cylinder

Technical Field

The invention belongs to the technical field of machining, and particularly relates to a drilling clamp for drilling an inclined oil hole in the bottom of a hydraulic cylinder.

Background

The drilling is used as a conventional cutting processing mode and is widely applied to hole site processing of various workpieces. Conventional bench drill, radial drill etc. processing equipment, the processing mode all is that main shaft vertical lift drilling cutting process is main, realizes the processing with the perpendicular hole of part datum plane relatively easily, but in product design, often has hole site and datum plane out of plumb, has the oblique hole of contained angle.

The traditional machining method is realized by adopting flat tongs to adjust a certain angle or adopting a machining center and using a center drill, a counter bit and a drill to cut and machine step by step, but the angle adjustment of the flat tongs, the clamping and alignment of the machining center or the frequent switching of machining cutters can take a quite long time, the deviation condition of the drill cannot be effectively controlled, and the method is not suitable for machining products with higher precision or batch.

Disclosure of Invention

The invention aims to solve the defects in the inclined hole machining, and provides an inclined oil hole drilling clamp which can accurately position and clamp, effectively control machining precision and quality, has a simple structure and is convenient to operate and can be quickly replaced aiming at a workpiece containing an inclined oil hole at the bottom of a hydraulic cylinder.

A hydraulic cylinder bottom inclined oil hole drilling clamp comprises a guide positioning mechanism and a sliding locking mechanism which are sequentially arranged on a bottom plate from left to right;

the guide positioning mechanism comprises a mounting plate and a positioning plate, the mounting plate is erected on the bottom plate, the positioning plate is vertically arranged at the upper end part of the mounting plate, the right side surface of the mounting plate is of a step structure, the step structure comprises a step I part which is a vertical surface and a step II part which is an inclined surface, the inclination angle of the inclined surface of the step II part is the same as the included angle between the inclined oil hole at the bottom of the hydraulic cylinder and the vertical direction, the positioning plate is arranged on the right side surface of the step I part, the lower end surface of the positioning plate is an inclined surface I, the included angle between the inclined surface I and the horizontal plane is complementary to the included angle between the;

the sliding locking mechanism comprises two parallel guide rails arranged on the bottom plate, a sliding block which is connected to the guide rails in a sliding mode and used for supporting the bottom of the hydraulic cylinder, and a locking mechanism used for locking the sliding block, the upper plane of the sliding block is a second inclined plane which is parallel to the lower end face of the positioning plate, and a V-shaped groove is formed in the upper plane of the sliding block along the central axis.

And a drill bushing is arranged in the positioning hole on the positioning plate.

The locking mechanism comprises a guide block fixedly arranged on the bottom plate, the guide block is transversely provided with a threaded hole matched with the screw rod, the screw rod with the top abutting against the sliding block to prevent the bottom of the hydraulic cylinder from moving is arranged in the threaded hole, and one end of the screw rod is provided with a hand wheel.

The bottom plate is transversely provided with two parallel grooves II matched with the structural sizes of the bottoms of the two guide rails, the corresponding positions of the grooves II and the bottoms of the guide rails are provided with more than two screw a mounting holes, and the two guide rails are fixedly connected with the bottom plate through screws a arranged in the screw a mounting holes.

And more than one positioning pin a mounting hole is formed in the corresponding positions of the second groove and the bottom of the guide rail.

The bottom plate is longitudinally provided with a first groove matched with the structural size of the bottom of the mounting plate, more than two screw c mounting holes are formed in corresponding positions of the first groove and the bottom of the mounting plate, and the mounting plate is fixedly connected with the bottom plate through screws c arranged in the screw c mounting holes.

The bottom of the mounting plate is provided with more than one positioning pin c, and the first groove is correspondingly provided with a pin hole c matched with the positioning pin c.

Two screw b mounting holes are formed in the relative positions of the mounting plate and the positioning plate, and the mounting plate and the positioning plate are fixedly connected through screws b mounted in the screw b mounting holes.

The locating plate is provided with more than one locating pin b, and the mounting plate is correspondingly provided with a pin hole b matched with the locating pin b.

Compared with the prior art, the processing angle of the inclined oil hole at the bottom of the hydraulic cylinder can be accurately positioned through the angle inclined planes of the positioning plate and the sliding block. The locating plate is provided with a guide drill bushing for drilling, so that the drilling empty position can be accurately located, and meanwhile, the locating deviation in the drill bit machining process is avoided. The angle inclined plane of the slide block is provided with a V-shaped groove, and the two V-shaped planes of the V-shaped groove and the angle inclined plane of the positioning plate form a clamping and positioning mechanism of the hydraulic cylinder bottom. This patent simple structure, convenient operation can realize the clamping, location, the dismantlement at the hydraulic cylinder bottom fast. Compared with the existing traditional machining method, the machining efficiency of the drilling hole is at least improved by more than 20%.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the slide lock mechanism;

FIG. 3 is a first structural view of a guiding and positioning mechanism;

FIG. 4 is a second structural view of the guiding and positioning mechanism;

FIG. 5 is a schematic structural diagram of an oblique oil hole A at the bottom of a hydraulic cylinder after clamping and locking;

FIG. 6 is a schematic structural diagram of a hydraulic cylinder after an inclined oil hole B is machined, clamped and locked;

FIG. 7 is a first schematic view of the structure of the hydraulic cylinder bottom;

FIG. 8 is a schematic view of the bottom structure of the hydraulic cylinder;

FIG. 9 is a schematic view of a positioning plate assembly;

FIG. 10 is a schematic view of a slider configuration;

in the figure, the device comprises a positioning plate 1, a positioning plate 2, a drill bushing 3, a sliding block 4, a screw rod 5, a guide block 6, a hand wheel 7, a bottom plate 8, a mounting plate 9, a guide rail 10, a hydraulic cylinder bottom 11, positioning pins a and 12, screws a and 13, positioning pins b and 14, screws b and 15, positioning pins c and 16 and screws c.

Detailed Description

In the figure 1, the invention comprises a guiding and positioning mechanism and a sliding and locking mechanism, wherein the guiding and positioning mechanism comprises a positioning plate 1, a drill bushing 2 is arranged in a positioning hole of the positioning plate 1 to realize the guiding of a drilling tool, the positioning plate 1 is arranged and fixed on a mounting plate 8, the mounting plate 8 is fixed on a bottom plate 7 to determine the accurate position for machining the inclined oil hole, the right side surface of the mounting plate 8 is of a step structure, the step structure comprises a step I part which is a vertical surface and a step II part which is an inclined surface, the inclined angle of the inclined surface of the step II part is the same as the included angle between the inclined oil hole of a hydraulic cylinder bottom 10 and the vertical direction, the positioning plate 1 is arranged on the right side surface of the step I part, the lower end surface of the positioning plate 1 is an inclined surface I, and; the sliding locking mechanism comprises a sliding block 3 and a locking mechanism for locking the sliding block 3, the locking mechanism comprises a screw rod 4 and a guide block 5, the screw rod 4 is connected with the guide block 5 in a matched mode through trapezoidal threads, a hand wheel 6 is fixed at the tail end of the screw rod 4 and drives the screw rod 4 to synchronously rotate through rotating the hand wheel 6 to drive the sliding block 3 to reciprocate, two parallel guide rails 9 are fixed on a bottom plate 7 to play a role in guiding the reciprocating motion of the sliding block 3, the upper plane of the sliding block 3 is an inclined plane II which is parallel to the lower end face of a positioning plate 1, and a V-shaped groove is formed in the upper plane of the.

In fig. 2, two guide rails 9 are fastened to the base plate 7 by two positioning pins a11 and four screws a12, respectively, and the guide block 5 is also fixed to the base plate 7 by two screws.

In fig. 3 and 4, the drill bushing 2 is mounted in a positioning hole of the positioning plate 1, and the positioning plate 1 is fixed on the mounting plate 8 through two positioning pins b13 and two screws b 14. The mounting plate 8 is fixed on the bottom plate 7 through two positioning pins c15 and three screws c16, and guides and positions the machining position of the inclined oil hole.

In fig. 5 and 6, the hydraulic cylinder bottom 10 is installed to a machining position, the outer circular surface of the hydraulic cylinder bottom 10 is in contact with the groove surface of the V-shaped groove on the sliding block 3, the side surface of the hydraulic cylinder bottom 10 is in contact with the inclined surface of the installation plate 8, the screw rod 4 is driven to synchronously rotate by rotating the hand wheel 6, the movable sliding block 3 is pushed to slide leftwards, the hydraulic cylinder bottom 10 is gradually lifted, after the upper plane of the hydraulic cylinder bottom 10 is completely in contact with the inclined surface of the positioning plate 1, enough clamping force is continuously applied to the sliding block 3 by rotating the hand wheel 6, the hand wheel 6 is loosened, and the locking of the hydraulic cylinder bottom 10 is realized. FIG. 5 is a clamping state diagram for machining the inclined oil hole A at the bottom of the hydraulic cylinder; FIG. 6 is a clamping state diagram for machining the inclined oil hole B at the bottom of the hydraulic cylinder.

In fig. 7 and 8, the structure of the hydraulic cylinder bottom 10 is shown, two oblique oil holes (a, B) of the hydraulic cylinder bottom 10 are respectively inclined towards two ends, the two oblique oil holes (a, B) are located on the central plane of the workpiece, the two oblique oil holes (a, B) are centrosymmetric along the two oblique oil holes (a, B), and the machining process is as shown in fig. 5 and 6, and the two oblique oil holes are machined respectively by turning over and clamping.

In fig. 9, the drill bushing 2 is installed in the positioning hole of the positioning plate 1 to play a role in guiding the drill bit, and the inclined surface of the positioning plate 1 plays a role in positioning the angle of the inclined oil hole.

In fig. 10, the groove surface of the V-shaped groove on the slider 3 is in complete contact with the outer circle of the hydraulic cylinder bottom 10 to lock the workpiece.

Claims

1. An inclined oil hole drilling fixture at the bottom of a hydraulic cylinder, characterized in that: it comprises a guiding and positioning mechanism and a sliding locking mechanism sequentially installed on the bottom plate (7) from left to right;

The guiding and positioning mechanism comprises a mounting plate (8) standing on the bottom plate (7), a positioning plate (1) vertically mounted on the upper end of the mounting plate (8), the right side of the mounting plate (8) is a stepped structure, and the steps The structure includes a step part which is a vertical surface and a step part two which is an inclined surface. The inclination angle of the inclined surface of the second step part is the same as the angle between the inclined oil hole at the bottom of the hydraulic cylinder (10) and the vertical direction. The plate (1) is installed on the right side of the first step, the lower end surface of the positioning plate (1) is the inclined plane 1, the angle between the inclined plane 1 and the horizontal plane and the angle between the inclined oil hole at the bottom of the hydraulic cylinder (10) and the horizontal plane are complementary to each other. , the positioning plate (1) is provided with a positioning hole for positioning the lower position of the tool;

The sliding locking mechanism comprises two mutually parallel guide rails (9) arranged on the bottom plate (7), a slider (3) slidably connected to the guide rails (9) for supporting the hydraulic cylinder bottom (10), The locking mechanism used to lock the slider (3), the upper plane of the slider (3) is an inclined plane 2 parallel to the lower end surface of the positioning plate (1), and the upper plane of the slider (3) is provided with a V-shaped recess along the central axis groove.

2 . The hydraulic cylinder bottom oblique oil hole drilling fixture according to claim 1 , wherein a drill sleeve ( 2 ) is installed in the positioning hole on the positioning plate ( 1 ). 3 .

3. A hydraulic cylinder bottom inclined oil hole drilling fixture according to claim 1, characterized in that: the locking mechanism comprises a guide block (5) fixed on the bottom plate (7), the guide block ( 5) A threaded hole matching the screw (4) is provided in the transverse direction, and the screw (4) whose top is pressed against the slider (3) to prevent the movement of the hydraulic cylinder bottom (10) is installed in the screw hole. One end of the screw (4) Fitted with a hand wheel (6).

4. A hydraulic cylinder bottom oblique oil hole drilling fixture according to claim 1, characterized in that: the bottom plate (7) is laterally provided with two guide rails (9) that match the bottom structural dimensions of the two guide rails (9). Two parallel grooves, the corresponding groove two, two or more screw a mounting holes are opened at the corresponding positions at the bottom of the guide rail (9), and the two guide rails (9) and the bottom plate (7) are installed through the screw a mounting holes Screw a (12) inside to fix the connection.

5. A hydraulic cylinder bottom inclined oil hole drilling fixture according to claim 4, characterized in that: one or more positioning pin a mounting holes are opened at the corresponding positions at the bottom of the groove 2 and the guide rail (9).

6. A hydraulic cylinder bottom oblique oil hole drilling fixture according to claim 1, characterized in that: the bottom plate (7) is longitudinally provided with grooves matching the structural dimensions of the bottom of the mounting plate (8). 1. Groove 1. More than two mounting holes for screws c are opened at the corresponding positions at the bottom of the mounting plate (8). The mounting plate (8) and the bottom plate (7) are fixed by screws c (16) installed in the mounting holes of the screws c. connect.

7. A hydraulic cylinder bottom oblique oil hole drilling fixture according to claim 6, characterized in that: the bottom of the mounting plate (8) is provided with more than one positioning pin c (15), the groove one is on the top Correspondingly, a pin hole c matched with the positioning pin c is opened.

8. A hydraulic cylinder bottom oblique oil hole drilling fixture according to claim 1, characterized in that: two screw b mounting holes are opened on the relative positions of the mounting plate (8) and the positioning plate (1), The mounting plate (8) and the positioning plate (1) are fixedly connected by screws b (14) installed in the mounting holes of the screws b.

9. A hydraulic cylinder bottom inclined oil hole drilling fixture according to claim 8, characterized in that: the positioning plate (1) is provided with more than one positioning pin b (13), and the mounting plate (8) A pin hole b that matches the positioning pin b is correspondingly opened on the upper part.