CN104289951A - Auxiliary positioning tool for milling double planes of reverse-gear shifting fork - Google Patents

Abstract

The invention discloses an auxiliary positioning tool for milling double planes of a reverse gear shift fork, which comprises a stand, a tool bottom plate, a support block, a left vertical plate, and a right vertical plate. , when the right positioning block extends into the fork of the reverse gear fork, the ejector rod of the middle vertical cylinder extends upwards and just supports the lower end surface of the reverse gear fork, and the ejector rod of the right vertical cylinder extends upwards and just supports At the waist of the reverse gear fork; when the reverse gear fork is rotated 180° counterclockwise, the round hole of the reverse gear fork is placed on the left set cylinder, and the left positioning block extends into the fork of the reverse gear fork. When the support block was supported below the upper end face of the reverse gear shift fork, the push rod of the left vertical cylinder stretched out upwards and just supported the waist of the reverse gear shift fork. The tooling is combined with a vertical milling machine, which can complete the machining of the upper plane of one workpiece and the lower plane of another workpiece at one time. The clamping is convenient and quick, which greatly improves the production efficiency and processing accuracy.

Description

An auxiliary positioning tool for milling the double planes of the reverse gear shift fork

technical field

The technical field of mechanical processing equipment of the present invention particularly relates to a positioning tool used for milling the upper and lower planes of a reverse gear shift fork.

Background technique

The reverse gear shift fork is one of the important parts of the automobile transmission. It is a cast-shaped part. It is necessary to use a milling machine to finish the upper and lower planes of the shift fork. The round shaft is clamped, and then processed by a horizontal milling machine. Since the upper and lower planes of the reverse gear fork are milled, two clamping and alignment are required, which is very troublesome, resulting in low machining accuracy and low production efficiency.

Contents of the invention

In view of the above technical problems, it is proposed to provide an auxiliary positioning tool for milling the double planes of the reverse gear shift fork. When the upper and lower planes of the shift fork are finished with a milling machine, the workpiece can be clamped and positioned by the positioning tool, which is convenient and quick and can be done at one time. Simultaneously process two workpieces to improve production efficiency and machining accuracy.

For this reason, the technical solution adopted by the present invention is: an auxiliary positioning tool for milling the double planes of the reverse gear shift fork, including a stand (1) and a tooling base plate (2), characterized in that: the tooling base plate (2) Located directly above the platform (1), the middle part of the tooling base plate (2) is suspended in the air, and the left and right ends are fixedly connected with the platform (1) through side support blocks (3). A left vertical cylinder (9) and a right vertical cylinder (10) are arranged at left and right intervals between the frames (1), and a left vertical plate (4) is fixed on the upper left of the tooling base plate (2), and a tooling base plate (2 ) is fixedly provided with a right vertical plate (5) on the upper right, and the left and right vertical plates (4, 5) are all close to the front edge of the tooling base plate (2);

The rear side wall of the right vertical plate (5) is fixed with a right sleeve cylinder (6) perpendicular to the rear side wall, which matches the width of the reverse gear shift fork and can extend into the right side of the reverse gear shift fork. The positioning block (7) is equipped with a middle vertical cylinder (8) on the top of the tooling base plate (2). When entering the fork mouth of the reverse gear shift fork, the push rod of the middle vertical cylinder (8) is just supported on the lower end surface of the reverse gear shift fork after extending upward, and the push rod of the right vertical cylinder (10) is just right after extending upward. Supported at the waist of the reverse shift fork, the push rod of the middle vertical cylinder (8), the right sleeve cylinder (6), the push rod of the right vertical cylinder (10), and the right positioning block (7) are arranged from left to right Set in turn;

The rear side wall of the left vertical plate (4) is fixed with a left sleeve cylinder (11) perpendicular to the rear side wall, which matches the width of the reverse gear fork opening and can extend into the left side of the reverse gear shift fork opening. The positioning block (12), the left support block (13) used to support the upper end surface of the reverse gear fork, after the reverse gear fork rotates 180° counterclockwise, the round hole of the reverse gear fork is placed on the left set cylinder ( 11), when the left positioning block (12) extends into the fork opening of the reverse gear shift fork and the left support block (13) is supported below the upper end surface of the reverse gear shift fork, the ejector rod of the left vertical cylinder (9) goes upward After stretching out, it is just supported on the waist of the reverse shift fork, and the left positioning block (12), the push rod of the left vertical cylinder (9), the left sleeve cylinder (11), and the left supporting block (13) are sequentially arranged from left to right. set up.

How to use: First place the workpiece to be processed, put the round hole of one of the reverse gear forks on the right set cylinder, and make the right positioning block snap into the fork opening of the reverse gear fork, and at the same time put the other reverse gear fork ( After the reverse gear fork has been milled on the upper end surface) rotate counterclockwise 180°, then put the round hole of the reverse gear fork on the left set cylinder, and make the left positioning block snap into the fork opening of the reverse gear fork 2. The left support block is supported under the upper end surface of the reverse gear fork (because the upper end surface of the left reverse gear fork has been processed, the left support block can be used directly, while the lower end surface of the right reverse gear fork is a rough surface , it is also necessary to add a middle vertical cylinder to use as a supporting block); after that, start the middle vertical cylinder, the left vertical cylinder and the right vertical cylinder, so that the push rod of the middle vertical cylinder stretches out upwards and just supports on the right On the lower end surface of the side reverse gear shift fork, the ejector rod of the right vertical cylinder extends upwards and just supports the waist of the right reverse gear shift fork, and the ejector rod of the left vertical cylinder extends upwards and just supports the left reverse gear At the waist of the shift fork, the clamping and positioning are completed at this time; because the two reverse gear forks are set oppositely, the milling cutter of the vertical milling machine is just located between the two reverse gear forks, and the right reverse gear is processed by the milling cutter at one time. The upper plane of the fork, the lower plane of the left reverse gear fork. After the processing is completed, the ejector rods of the middle vertical cylinder, left vertical cylinder and right vertical cylinder are retracted, the left reverse gear fork is removed, and the right reverse gear fork is rotated 180° counterclockwise, then put Enter the clamping position on the left to continue processing the lower plane, and then put a new workpiece into the clamping position on the right to process the upper plane.

As a preference of the above scheme, the right and left positioning blocks (7, 12) are both composed of a positioning part extending into the mouth of the reverse gear shift fork and an installation part located outside the mouth of the reverse gear shift fork. The forks of the shift fork are clearance fit, the width of the installation part is greater than that of the positioning part, and the installation part of the right positioning block (7) is bent downward relative to the positioning part. Additional installation parts are used to fix the corresponding vertical plates. The positioning part is matched with the fork opening of the reverse gear fork to facilitate loading and unloading of workpieces. The installation part of the right positioning block is bent downward relative to its positioning part to reduce the occupied space. Lower the height of the right riser.

Further, the ends of the ejector rods of the left vertical cylinder (9) and the right vertical cylinder (10) are both curved surfaces, which match the curved surfaces of the supported parts of the shift fork. The curved surface is used to increase the contact area and improve the supporting strength.

The beneficial effect of the present invention: the concept is novel, the design is ingenious, the workpiece is clamped and positioned by the positioning tool, and then the upper and lower planes of the shift fork are finished with a vertical milling machine, so that the upper plane of one workpiece and the lower plane of another workpiece can be completed at one time. The lower plane is processed, and the clamping is convenient and fast, which greatly improves the production efficiency and processing accuracy.

Description of drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a diagram of the use state of the present invention.

Detailed ways

Below by embodiment and in conjunction with accompanying drawing, the present invention will be further described:

As shown in Figure 1, an auxiliary positioning tool for milling the double planes of the reverse gear shift fork consists of a stand 1, a tooling bottom plate 2, support blocks 3 on both sides, a left vertical plate 4, a right vertical plate 5, a right set cylinder 6, Right positioning block 7, middle vertical cylinder 8, left vertical cylinder 9, right vertical cylinder 10, left suit cylinder 11, left positioning block 12, left supporting block 13 etc. form.

The tooling base plate 2 is located directly above the stand 1, the middle part of the tooling base plate 2 is suspended, and the left and right ends are fixedly connected with the stand 1 through side support blocks 3. Tooling base plate 2 adopts middle part to be suspended, is to be used for arranging left vertical cylinder 9 and right vertical cylinder 10 in order to vacate space.

A left vertical cylinder 9 and a right vertical cylinder 10 are arranged at left and right intervals between the tooling base plate 2 and the stand 1, and each cylinder has a push rod that can extend upwards. The upper left of the tooling base plate 2 is fixed with a left vertical plate 4, the upper right of the tooling base plate 2 is fixed with a right vertical plate 5, and the left vertical plate 4 and the right vertical plate 5 are arranged near the front edge of the tooling base plate 2. Preferably, the rear side walls of the left vertical plate 4 and the right vertical plate 5 are coplanar, but both can be slightly staggered.

The rear side wall of the right vertical plate 5 is fixedly provided with the right set cylinder 6 perpendicular to the rear side wall, the right positioning block 7 that matches the width of the reverse gear shift fork cradle and can stretch into the reverse gear shift fork cradle. A middle vertical cylinder 8 is installed on the top of the tooling base plate 2. When the round hole of the reverse gear shift fork is sleeved on the right sleeve cylinder 6, and the right positioning block 7 extends into the fork of the reverse gear shift fork, the middle vertical cylinder The push rod of 8 is just in time supported on the lower end surface of reverse gear shift fork after stretching out upwards, and the push rod of right vertical cylinder 10 is just in time supported on the waist of reverse gear shift fork after upwards stretching out. The ejector rod of the middle vertical cylinder 8, the right sleeve cylinder 6, the ejector rod of the right vertical cylinder 10, and the right positioning block 7 are arranged in sequence from left to right, thereby ensuring that the reverse shift fork is clamped on the right vertical plate, The plane is on the left and facing up, and the fork is on the right.

The rear side wall of the left vertical plate 4 is fixed with a left set column 11 perpendicular to the rear side wall, a left positioning block 12 that matches the width of the reverse gear shift fork and can extend into the reverse gear shift fork fork. The left supporting block 13 supporting the upper end face of the reverse gear shift fork. After the reverse gear fork rotates 180° counterclockwise, the round hole of the reverse gear fork is placed on the left set cylinder 11, and the left positioning block 12 is inserted into the fork of the reverse gear fork, and the left support block 13 is supported on the When the upper end face of the reverse gear shift fork is below, the push rod of the left vertical cylinder 9 extends upwards and just supports the waist of the reverse gear shift fork, and the push rod of the left positioning block 12, the left vertical cylinder 9, and the left suit cylinder 11. The left support block 13 is arranged sequentially from left to right, thereby ensuring that when the reverse gear shift fork is clamped on the left vertical plate, the lower plane is on the right side and faces upward, and the fork is on the left side.

Preferably, the right positioning block 7 and the left positioning block 12 are all made up of a positioning part extending into the opening of the reverse gear shift fork and an installation part positioned outside the opening of the reverse gear shifting fork. Clearance fit, the width of the installation part is larger than the positioning part, and the installation part of the right positioning block 7 is bent downward relative to its positioning part. Simultaneously, the diameter of left suit cylinder 11, the diameter of right suit cylinder 6 matches with the circular hole diameter of reverse gear shift fork, and both clearance fits, convenient assembly and disassembly.

In addition, the ends of the push rods of the left vertical cylinder 9 and the right vertical cylinder 10 are all curved surfaces, and match the curved surfaces of the supported parts of the shift fork.

As shown in Figure 1 and Figure 2, before processing, first place the reverse gear shift fork 14 to be processed, put the round hole of one of the reverse gear shift forks 14 on the right sleeve cylinder 6, and snap the right positioning block 7 into In the fork opening of the reverse gear fork 14, at the same time rotate another reverse gear fork 14 (the reverse gear fork whose upper end surface has been milled) counterclockwise 180°, and then set the round hole of the reverse gear fork 14 on the On the left sleeve cylinder 11, the left positioning block 12 is snapped into the fork of the reverse gear fork 14, and the left supporting block 13 is supported below the upper end surface of the reverse gear fork 14 (because the reverse gear fork on the left side has been The upper end surface is processed, so the left support block can be used directly, and the lower end surface of the reverse gear shift fork on the right side is a rough surface, and a middle vertical cylinder needs to be added as a support block); after that, start the middle vertical cylinder 8 , the left vertical cylinder 9 and the right vertical cylinder 10, after the push rod of the middle vertical cylinder 8 stretches out upwards, it is just supported on the lower end face of the reverse gear shift fork 14 on the right side, and the push rod of the right vertical cylinder 10 stretches upwards After going out, it is just supported on the waist of the right reverse shift fork 14, and the push rod of the left vertical cylinder 9 stretches out upwards and is just supported on the waist of the left reverse shift fork 14. Now the clamping and positioning is completed; The gear shift forks 14 are oppositely arranged, and the milling cutter disc of the vertical milling machine 15 is just located between the two reverse gear shift forks 14, and the upper plane of the right reverse gear shift fork 14 and the left reverse gear shift fork are processed by the milling cutter at one time. 14 lower planes. After the processing is completed, the ejector rods of the middle vertical cylinder 8, the left vertical cylinder 9 and the right vertical cylinder 10 are retracted, the reverse gear fork 14 on the left is removed, and the reverse gear fork 14 on the right is rotated counterclockwise After 180°, put it into the clamping position on the left to continue processing the lower plane, and then put a new workpiece into the clamping position on the right to process the upper plane.

Claims (3)

1. the biplanar auxiliary locating tool equipment of milling back fork, comprise stand (1) and tool base plate (2), it is characterized in that: described tool base plate (2) is positioned at directly over stand (1), the middle part of tool base plate (2) is unsettled, two ends, left and right are fixed together by back-up heel (3) and stand (1), between described tool base plate (2) and stand (1), left and right is arranged at intervals with left vertically cylinder (9) and the vertical cylinder in the right side (10), the upper left side of described tool base plate (2) is installed with left riser (4), the upper right side of tool base plate (2) is installed with right riser (5), and it is left, right riser (4, 5) all near the leading edge of tool base plate (2),

The rear wall of described right riser (5) is installed with the right suit cylinder (6) perpendicular to rear wall, mate with back fork prong width and the right locating piece (7) in back fork prong can be stretched into, vertical cylinder (8) in the top of tool base plate (2) is provided with, when the circle hole sleeve of back fork is on right suit cylinder (6), when right locating piece (7) stretches in the prong of back fork simultaneously, in the push rod of vertical cylinder (8) protrude upward after be just in time bearing in the lower surface of back fork, the waist of back fork is just in time bearing in after the push rod of right vertically cylinder (10) protrudes upward, the push rod of vertical cylinder (8) in described, right suit cylinder (6), the push rod of right vertically cylinder (10), right locating piece (7) from left to right sets gradually,

The rear wall of described left riser (4) is installed with the left suit cylinder (11) perpendicular to rear wall, mate with back fork prong width and the left locating piece (12) in back fork prong can be stretched into, for supporting the left rest pad (13) of back fork upper surface, after back fork is rotated counterclockwise 180 °, and by the circle hole sleeve of back fork on left suit cylinder (11), left locating piece (12) stretches in the prong of back fork simultaneously, when left rest pad (13) is bearing in below the upper surface of back fork, the waist of back fork is just in time bearing in after the push rod of left vertically cylinder (9) protrudes upward, and left locating piece (12), the push rod of left vertically cylinder (9), left suit cylinder (11), left rest pad (13) from left to right sets gradually.

2. according to the biplanar auxiliary locating tool equipment of milling back fork according to claim 1, it is characterized in that: the described right side, left locating piece (7,12) are by the localization part stretched in back fork prong, the mounting portion one composition be positioned at outside back fork prong, the prong matched in clearance of localization part and back fork, the width of mounting portion is greater than localization part, mounting portion its localization part downward bending relatively of described right locating piece (7).

3. according to the biplanar auxiliary locating tool equipment of milling back fork described in claim 1 or 2, it is characterized in that: the push rod termination of the vertical cylinder in a described left side (9), right vertically cylinder (10) is curved surface, and with the SURFACES MATCHING of selector fork supported portion position.