CN210125891U - Tractor gearbox shift fork jaw milling machine fixture - Google Patents

Abstract

The utility model discloses a tractor gearbox shifting fork fork mouth milling machine fixture, comprising: a positioning mandrel and a fork head clamping unit, the positioning mandrel is suitable for passing through the inner hole of the shifting fork to align the inner hole of the shifting fork limit. The fork head clamping unit includes a left limit clamp assembly and a right limit clamp assembly which are suitable for limit clamping of the left fork head and the right fork head of the shift fork respectively; The bit clamping assembly is formed with a concave area corresponding to the fork portion of the shift fork.

Description

Tractor gearbox shift fork milling machine fixture

technical field

The utility model relates to the technical field of mechanical processing, in particular to a tractor transmission fork fork milling machine fixture.

Background technique

Please refer to FIG. 1 and FIG. 2 , the tractor gearbox shift fork workpiece is an irregularly shaped structure as a whole, including a perforated part, and two fork heads connected to the perforated part, wherein a fork head is formed between the two fork heads Therefore, for the entire tractor gearbox shift fork workpiece, it is necessary to limit the perforated portion of the shift fork, the two fork heads and the fork portion to achieve effective limit fixation for the entire shift fork. However, based on the irregular shape structure of the overall fork workpiece, the rapid limit and fixation of the fork workpiece has become a difficulty in fixture design.

Utility model content

The purpose of the utility model is to provide a tractor gearbox shift fork fork milling machine fixture, so as to solve the technical problem of fast clamping and limiting the shift fork workpiece.

The tractor gearbox shift fork milling machine fixture of the utility model is realized as follows:

A tractor gearbox shift fork milling machine fixture, comprising:

a positioning mandrel, the positioning mandrel is adapted to pass through the inner hole of the shift fork to limit the position of the inner hole of the shift fork;

A fork clamping unit, the fork clamping unit includes a left limit clamping assembly and a right limit clamping assembly adapted to limit and clamp the left fork and the right fork of the shift fork respectively; The left limit clamp assembly and the right limit clamp assembly are formed with a concave area corresponding to the fork of the shift fork.

In a preferred embodiment of the present invention, the positioning mandrel, the left limit clamping assembly and the right limit clamping assembly are all arranged on a support frame; and

The end faces of the front and rear sides of the support frame are respectively provided with a positioning mandrel; the left limit clamping assembly and the right limit clamping assembly are both located at the top end of the support frame;

the left limit clamp assembly and the right limit clamp assembly are located above the positioning mandrel; and

The positioning mandrel is located in the middle area formed by the left limit clamp assembly and the right limit clamp assembly.

In a preferred embodiment of the present invention, the left limit clamping assembly and the right limit clamping assembly are symmetrically arranged.

In a preferred embodiment of the present utility model, the left limit clamp assembly and the right limit clamp assembly both include a fixed seat fixed on the top end of the support frame, and a ball head penetrating the fixed seat. bolts, a first pressure plate and a second pressure plate sleeved on the ball stud and located on both sides of the fixing seat, and the side end faces of the fixing seat facing the first pressure plate and the second pressure plate are respectively provided with The first support plate and the second support plate; between the first support plate and the first pressure plate, and between the second support plate and the second pressure plate are distributed to form the limit suitable for the fork head of the limit shift fork bit area;

the first support plate and the second support plate are arranged symmetrically with respect to the fixing seat; and the first support plate and the second support plate are located on the part of the fixing seat near the recessed area; and

The ball head fixed end of one end of the ball head bolt protrudes from the outer side of the second pressing plate away from the fixing seat;

In a preferred embodiment of the present invention, a spring is provided on the outer shell of the ball stud; the spring penetrates the fixing seat, and two axial ends of the spring abut against the balls of the ball stud respectively. Between the fixed end of the head and the spherical shoulder nut.

In a preferred embodiment of the present invention, a flat washer is provided between the end of the spring and the spherical shoulder nut.

In a preferred embodiment of the present invention, a first adjusting support column is provided between the first pressing plate and the fixing seat away from the recessed area; The part of the recessed area is provided with a second adjusting support column;

The first support plate and the second support plate are arranged symmetrically with respect to the fixed seat; and the first support plate and the second support plate are located on the part of the fixed seat near the recessed area.

In a preferred embodiment of the present invention, one end of the first adjusting support column is threadedly connected to the fixing seat, and the other end of the first adjusting support column is suitable for abutting against the first pressing plate; The end face of the first pressing plate facing the first adjusting support column is provided with a first limiting groove;

One end of the second adjustment support column is threadedly connected to the fixing seat, and the other end of the second adjustment support column is suitable for abutting against the second pressure plate; when the second pressure plate faces the second adjustment support column The end face is provided with a second limiting groove;

In a preferred embodiment of the present utility model, the tractor gearbox shift fork milling machine fixture further comprises a positioning member suitable for being loaded in the recessed area;

The positioning member includes a body suitable for being clamped in the recessed area, and a wing portion which is integrally connected with the body and protrudes out of the recessed area and is suitable for the caliper at the fork of the fork. ;

The end surfaces of the wing portion suitable for facing the pair of fork heads of the shift fork are circular arc surfaces; and when the fork heads of the shift fork are placed in the limiting area, the pair of fork heads of the shift fork respectively abut against each other. Both sides of the wings.

The use method of the tractor transmission fork milling machine fixture of the utility model is realized as follows:

By adopting the above-mentioned technical scheme, the utility model has the following beneficial effects: the tractor gearbox shift fork mouth milling machine fixture of the present utility model, through the cooperating positioning mandrel and the left limit clamping assembly and the right limit clamping assembly , the inner hole of the shift fork and a pair of fork heads can be simultaneously limited and fixed. In this process, it is only necessary to operate the left limit clamping assembly and the right limit clamping assembly to clamp a pair of fork heads. The clamping and fixing of the overall fork is realized, and the operation of the whole process is convenient and efficient.

Description of drawings

Fig. 1 is the structural representation of the first angle of view of the shifting fork;

Fig. 2 is the structural representation of the second angle of view of the fork;

Fig. 3 is the three-dimensional structure schematic diagram of the tractor transmission fork fork mouth milling machine fixture of the utility model;

Fig. 4 is the top-view structure schematic diagram of the tractor transmission fork fork mouth milling machine fixture of the utility model;

5 is a schematic top view of the structure of the tractor gearbox shifting fork milling machine clamp of the utility model in a state in which the shifting fork is clamped;

Fig. 6 is the side view sectional structure schematic diagram of the tractor gearbox shift fork fork mouth milling machine clamp of the utility model in the state in which the shift fork is clamped;

Fig. 7 is the side view sectional structure schematic diagram of the tractor gearbox shift fork fork mouth milling machine clamp of the utility model in the state that the shift fork is clamped;

8 is a schematic side view of the structure of the tractor gearbox shifting fork fork mouth milling machine clamp of the utility model in a state in which the shifting fork is clamped;

In the figure: the first screw 1, the spring 2, the flat washer 5, the first pressure plate 4-1, the second pressure plate 4-2, the spherical shoulder nut 6, the ball head bolt 7-1, the ball head fixed end 7-2, Positioning mandrel 8, support frame 9, fixed seat 10, recessed area 11, first adjustment support column 12-1, second adjustment support column 12-2, body 13-1, wing portion 13-2, second screw 14. The first support plate 15-1, the second support plate 15-2, the first limit groove 16-1, the second limit groove 16-2, the base 17, the inner hole A, the fork head B, Fork C.

Detailed ways

In order to make the content of the present utility model easier to understand clearly, the present utility model will be described in further detail below according to specific embodiments and in conjunction with the accompanying drawings.

Example 1:

Referring to FIGS. 1 to 8 , this embodiment provides a tractor gearbox shift fork mouth milling machine fixture, including: an inner hole portion A suitable for passing through the shift fork to limit the inner hole portion A of the shift fork. Positioning mandrel 8; fork head B clamping unit suitable for limiting, clamping and fixing a pair of fork heads B of the shifting fork.

Specifically, the fork B clamping unit includes a left limit clamping assembly and a right limit clamping assembly adapted to limit and clamp the left fork B and the right fork B of the shift fork respectively; The clamping assembly and the right limit clamping assembly are formed with a concave area 11 corresponding to the fork portion C of the shift fork.

The positioning mandrel 8 and the left and right limit clamping assemblies are all arranged on a support frame 9 ; and the support frame 9 is fixed on a base 17 . For this embodiment, in order to effectively improve the utilization rate of the support frame 9 , in this embodiment, the fork clamping and processing operation sections are symmetrically arranged on the front and rear side end faces of the support frame 9 . The front and rear side end faces realize the clamping limit fixation of the two fork workpieces.

In detail, a positioning mandrel 8 is respectively provided on the front and rear end faces of the support frame 9; the left limit clamp assembly and the right limit clamp assembly are both located at the top end of the support frame 9; wherein the left limit clamp assembly And the right limit clamping assembly is located above the positioning mandrel 8; and the positioning mandrel 8 is located in the middle area formed by the left limit clamping assembly and the right limit clamping assembly. Structural fit.

In an optional implementation manner, the left limit clamp assembly and the right limit clamp assembly are arranged symmetrically. Since the left limit clamping assembly and the right limit clamping assembly are respectively used to limit and clamp a pair of fork heads B of the shift fork, although the shift fork formed by the pair of fork heads B and the inner hole A is irregular and symmetrical However, for the limit clamping of a pair of fork heads B, the left limit clamping assembly and the right limit clamping assembly limit and clamp the head end of the fork B when they are respectively. The left limit clamp assembly and the right limit clamp assembly of the structure realize the limit operation of a pair of fork heads B, and will not be affected by the irregularity of the fork. In this embodiment, the case where the left limit clamping assembly and the right limit clamping assembly are symmetrical structures is taken as an example.

In more detail, for the left limit clamp assembly and the right limit clamp assembly of the symmetrical structure, both the left limit clamp assembly and the right limit clamp assembly include a the fixing base 10, the ball stud 7-1 penetrating the fixing base 10, the first pressing plate 4-1 and the second pressing plate 4-2 respectively located on the two sides of the fixing base 10 and sleeved on the ball stud 7-1, and A first support plate 15-1 and a second support plate 15-2 are respectively provided on the side end surfaces of the fixing base 10 facing the first pressure plate 4-1 and the second pressure plate 4-2; on the first support plate 15-1 Between the first pressing plate 4-1, and between the second supporting plate 15-2 and the second pressing plate 4-2, a limiting area suitable for limiting the fork B of the shifting fork is distributed. It should be noted here that the first pressing plate 4-1 and the second pressing plate 4-2 are respectively arranged on both sides of the fixed seat 10, where the two sides of the fixed seat 10 are also the two side ends of the support frame 9, That is, the first pressing plate 4-1 and the second pressing plate 4-2 are actually used for fixing the fork heads B of the two shifting forks respectively. For a pair of fork heads B connected to one fork, the limit is achieved by the first pressure plate 4-1 or the second pressure plate 4-2 respectively included in the left limit clamping assembly and the right limit clamping assembly. clamped. Wherein, the fixing base 10 can optionally be fixedly connected with the support frame 9 through, for example, but not limited to, the first screw 1 . The first support plate 15-1 and the second support plate 15-2 are optionally fixed to the fixing base 10 by, for example, but not limited to, the second screw 14.

The first support plate 15-1 and the second support plate 15-2 are symmetrically arranged with respect to the fixed seat 10; and the first support plate 15-1 and the second support plate 15-2 are located on the part of the fixed seat 10 near the recessed area 11 ; And the ball head fixed end 7-2 of one end of the ball stud 7-1 protrudes from the outside of the second pressing plate away from the fixed seat 10; Part of the sleeve is provided with a spherical shoulder nut 6 . That is, the first pressing plate 4-1 and the second pressing plate 4-2 are limited on the ball stud 7-1 by the ball fixed end 7-2 of the ball stud 7-1 and the spherical shoulder nut 6.

In order to facilitate adjustment of the size of the limit area for the fork B of the shift fork formed between the first pressing plate 4-1 and the fixing seat 10, and between the second pressing plate 4-2 and the fixing seat 10, so that when it is necessary to put When the fork head B of the shift fork is withdrawn, the distances between the first pressing plate 4-1 and the fixing seat 10, and between the second pressing plate 4-2 and the fixing seat 10 are larger than the size of the fork head B, and when it is necessary to clamp When the fork head B is tightened, the distance between the first pressing plate 4-1 and the fixing seat 10 and the distance between the second pressing plate 4-2 and the fixing seat 10 can be adjusted to achieve the clamping effect on the fork head B. This embodiment A spring 2 is provided on the outer sleeve of the ball stud 7-1; the spring 2 penetrates the fixing seat 10, and the two axial ends of the spring 2 abut against the ball stud 7-1 of the ball stud 7-1 and the spherical belt respectively. between shoulder nuts 6. That is, by rotating the spherical shoulder nut 6 to realize the slack of the spring 2 sleeved on the ball stud 7-1, the first pressure plate 4-1 and the fixing seat 10, and the second pressure plate 4-2 and the second pressure plate 4-2 can be adjusted. The space between the fixing bases 10 is over. The first support plate 15-1 and the second support plate 15-2 are symmetrically arranged with respect to the fixed seat 10; and the first support plate 15-1 and the second support plate 15-2 are located on the part of the fixed seat 10 near the recessed area 11 . Wherein, optionally, a flat washer 5 is provided between the end of the spring 2 and the spherical shoulder nut 6 .

Since the first support plate 15-1 and the second support plate 15-2 are located on the part of the fixed seat 10 near the recessed area 11, that is, for the integral fixed seat 10, the first support plate 15-1 and the second support plate 15-2 is biased to one side of the middle of the fixed seat 10, so, for the other side of the middle of the fixed seat 10 with the first support plate 15-1 or the second support plate 15-2, when the first pressure plate is When 4-1 is pressed against the first support plate 15-1, when the second pressure plate 4-2 is pressed against the second support plate 15-2, due to the fork head B of the shift fork and the first support plate 15-1, and the shift fork The function of the fork B and the second support plate 15-2, the middle part of the first pressure plate 4-1 is biased to the first support plate 15-1, and the middle part of the second pressure plate 4-2 is biased to one side of the second support plate 15-2 The support of the side end faces can be achieved, but for the lack of support on the side end faces of the first pressing plate 4-1 and the second pressing plate 4-2 that are biased away from the first supporting plate 15-1 and the second supporting plate 15-2, the first The pressing effect of the first pressing plate 4-1 and the second pressing plate 4-2 on the fork B of the shift fork is weakened, or the purpose of sufficient pressing is not achieved. Based on the consideration of the above problems, in this embodiment, a first adjusting support column 12-1 is provided between the first pressing plate 4-1 and the fixing seat 10 away from the recessed area 11; A second adjusting support column 12-2 is provided between the parts 10 away from the recessed area 11.

Here, one end of the first adjusting support column 12-1 is connected to the fixing base 10 with threads, and the other end of the first adjusting support column 12-1 is suitable for abutting against the first pressing plate 4-1; on the first pressing plate 4- A first limiting groove 16-1 is provided on the end face of the first adjusting support column 12-1. One end of the second adjusting support column 12-2 is threadedly connected to the fixing base 10, and the other end of the second adjusting support column 12-2 is adapted to abut against the second pressing plate 4-2; when the second pressing plate 4-2 faces the first The end surfaces of the two adjusting support columns 12-2 are provided with second limiting grooves 16-2.

In addition, it should be noted that between the first adjustment support column 12-1 and the first pressure plate 4-1, and between the second adjustment support column 12-2 and the second pressure plate 4-2, only when the fork B is placed Between the first pressure plate 4-1 and the fixed seat 10, and between the second pressure plate 4-2 and the fixed seat 10, in the process of rotating the spherical shoulder nut 6 to press the fork B of the shift fork, the first An adjustment support column 12-1 gradually approaches the first pressure plate 4-1, and at the same time, the second adjustment support column 12-2 gradually approaches the second pressure plate 4-2. When the fork head B of the shift fork is pressed, the current The first adjustment support column 12-1 also abuts on the first pressure plate 4-1, and the second adjustment support column 12-2 also abuts on the second pressure plate 4-2. In this way, the supporting effect is achieved for both sides of the middle of the first and second pressing plates 4-1 and 4-2 as a whole, so as to effectively ensure that the first pressing plate 4-1 and the second pressing plate 4-2 are effective for the shifting fork. Clamping effect of fork B.

Example 2:

On the basis of the tractor transmission fork fork milling machine fixture of Embodiment 1, the tractor transmission fork fork milling machine fixture provided in this embodiment further includes a positioning member suitable for being loaded in the recessed area 11 . The function of the positioning member designed in this embodiment is mainly to limit the fork portion C in the irregular structure of the shift fork, so that the fork head B of the shift fork is placed in the left limit clamping assembly and the right limit clamping assembly. When in the limiting region of the assembly, the fork portion C is limited and positioned by the positioning member, so that the limiting fork B can accurately limit the left and right limit clamping assemblies in the limiting regions of the left and right limit clamping assemblies.

In detail, the positioning member used in this embodiment includes a body 13-1 adapted to be embedded in the concave area 11, and a body 13-1 integrally connected with the body 13-1 and extending outside the concave area 11, suitable for the caliper to be inserted into the fork The wing portion 13-2 at the fork of the fork; the end face of the wing portion 13-2 is adapted to face the pair of fork heads B of the shift fork as an arc surface; and the fork head B of the shift fork is placed in the limiting area , the pair of fork heads B of the shift fork respectively abut against both side ends of the wing portion 13-2. The main body 13-1 is mainly used to realize the snap-fit with the recessed area 11, so as to realize the fixation of the position of the overall positioning member.

For the specific use method of the tractor transmission fork fork mouth milling machine fixture of the present embodiment, it includes:

Step S1: the positioning mandrel 8 passes through the inner hole of the shifting fork to locate the inner hole of the shifting fork;

Step S2: the two fork heads B of the shifting fork are respectively inserted into the left limit clamping assembly and the right limit clamping assembly;

Step S3: inserting the positioning member into the recessed area 11, so that the pair of prongs B of the shifting fork contacts both sides of the wing portion 13-2 of the positioning member;

Step S4: The pair of fork heads B of the shift fork is clamped by the left limit clamping assembly and the right limit clamping assembly, and the positioning member is taken out from the recessed area 11.

Specifically, when installing the fork workpiece, the inner hole portion A of the fork workpiece is first sleeved on the positioning mandrel, and then the end faces of the pair of fork heads B are placed in the limit areas of the left support limit assembly and the right support limit assembly. And contact the first support plate 15-1 or the second support plate 15-2, then put the positioning member, adjust the position of the overall fork through the wing portion 13-2 of the positioning member, so that the positioning of the fork is accurate, and the position is to be dialed. After the fork workpiece is completely positioned, remove the positioning piece. In this optional case, after the fork workpiece is positioned, the spherical shoulder nut 6 can be rotated so that the fork head is not easy to be parallel to the support frame relative to the support frame 9. The displacement in the direction of 9, but the spherical shoulder nut 6 is not fully tightened here to facilitate the withdrawal of the positioning member; finally, the spherical shoulder nut 6 is rotated to make the fork workpiece be completely compressed. The fork head is mainly clamped perpendicular to the direction of the support frame 9, so that the limit clamping of the whole fork workpiece is completed, so as to facilitate the processing operation of the next process.

It should also be noted that, for the control of each functional component involved in the systematic operation of the wolfberry modified treatment device designed in this embodiment, it can be manually controlled to open and close, or it can be connected to a host computer, through the host computer. to coordinate the opening and closing of various functional components, which is not absolutely limited in this embodiment.

The above specific embodiments further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention, and are not intended to limit the present invention. Within the spirit and principle of the present invention, any modifications, equivalent replacements, improvements, etc. made should be included within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that The device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that is usually placed when the utility model product is used, only for the convenience of describing the present utility model and simplifying the description, not Indicates or implies that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first", "second", "third", etc. are only used to differentiate the description and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhanging" etc. do not imply that a component is required to be absolutely horizontal or overhang, but rather may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the present invention, unless otherwise expressly specified and limited, the first feature above or below the second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact Rather, they are contacted by additional features between them. Also, the first feature being above, above and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is below, below and below the second feature includes the first feature is directly below and diagonally below the second feature, or simply means that the first feature level is smaller than the second feature.

Claims (9)

1. The utility model provides a tractor gearbox shift fork jaw milling machine fixture which characterized in that includes:

the positioning mandrel is suitable for penetrating through the inner hole part of the shifting fork to limit the inner hole part of the shifting fork;

the fork head clamping unit comprises a left limiting clamping assembly and a right limiting clamping assembly which are suitable for respectively limiting and clamping a left fork head and a right fork head of the shifting fork; and the left limiting and clamping component and the right limiting and clamping component are provided with sunken areas corresponding to fork openings of the shifting forks.

2. The tractor transmission shift fork jaw milling machine fixture of claim 1, wherein the positioning mandrel and the left and right limit clamp assemblies are all disposed on a support frame; and

the front side end face and the rear side end face of the supporting frame are respectively provided with a positioning mandrel; the left limit clamping assembly and the right limit clamping assembly are both positioned at the top end part of the supporting frame;

the left limiting and clamping assembly and the right limiting and clamping assembly are positioned above the positioning mandrel; and is

The positioning mandrel is positioned in a middle area formed by the left limiting and clamping assembly and the right limiting and clamping assembly.

3. The tractor transmission shift fork jaw milling machine fixture of claim 2, characterized in that the left and right limit clamp assemblies are symmetrically disposed.

4. The tractor gearbox shifting fork jaw milling machine fixture according to claim 3, wherein each of the left and right limiting clamping assemblies comprises a fixed seat fixedly arranged at the top end of the supporting frame, a ball stud penetrating through the fixed seat, a first pressure plate and a second pressure plate sleeved on the ball stud and respectively positioned at two sides of the fixed seat, and a first bearing plate and a second bearing plate respectively arranged on side end faces of the fixed seat facing the first pressure plate and the second pressure plate; a limiting area suitable for limiting a fork head of a shifting fork is distributed and formed between the first supporting plate and the first pressing plate and between the second supporting plate and the second pressing plate;

the first supporting plate and the second supporting plate are symmetrically arranged relative to the fixed seat; the first supporting plate and the second supporting plate are positioned on the part of the fixed seat near the recessed area; and

a ball head fixing end at one end of the ball head bolt extends out of the outer side, away from the fixing seat, of the second pressing plate; and a spherical shoulder nut is sleeved on the part of the ball stud extending out of the first pressing plate and departing from the outer side of the fixed seat.

5. The tractor transmission shift fork jaw milling machine fixture of claim 4, wherein a spring is sleeved outside the ball stud; the spring penetrates through the fixed seat, and two axial end parts of the spring respectively abut against the ball head fixed end of the ball head bolt and the spherical shoulder nut.

6. The tractor transmission shift fork pocket milling machine fixture of claim 5, wherein a flat washer is provided between the end of the spring and the spherical shoulder nut.

7. The tractor transmission shift fork jaw milling machine fixture of claim 4, wherein a first adjusting support column is provided between the first pressure plate and the fixed seat away from the recessed area; and a second adjusting support column is arranged between the second pressure plate and the fixed seat and far away from the depressed area.

8. The tractor transmission shift fork jaw milling machine fixture of claim 7, wherein one end of the first adjusting support post is threadedly connected to the fixed seat and the other end of the first adjusting support post is adapted to abut the first pressure plate; a first limiting groove is formed in the end face, facing the first adjusting support column, of the first pressing plate;

one end of the second adjusting supporting column is in threaded connection with the fixed seat, and the other end of the second adjusting supporting column is suitable for abutting against the second pressing plate; and a second limiting groove is formed in the end face, facing the second adjusting support column, of the second pressing plate.

9. The tractor transmission shift fork pocket mill clamp of claim 7, further comprising a locating member adapted to be loaded into the recessed area;

the positioning piece comprises a body suitable for being embedded in the recessed area, and a wing part which is integrally connected with the body and extends out of the recessed area and is suitable for clamping a caliper at a fork opening of a shifting fork;

the wing parts are suitable for being towards the end surfaces of a pair of fork heads of the shifting fork and are arc surfaces; and

when the fork head of the shifting fork is arranged in the limiting area, the pair of fork heads of the shifting fork respectively abut against two side ends of the wing part of the wing.

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