CN216656464U - a drill - Google Patents

Abstract

The utility model discloses a drill jig, which belongs to the technical field of metal processing, and is characterized in that the drill jig is arranged into a sleeve cover type structure, so that the drill jig can be connected to the end part to be processed of a shaft part in a threaded connection mode, and the drill jig is used for processing and positioning various characteristics of the end face and the excircle of the part. The drill jig disclosed by the utility model is simple in structure and easy and convenient to use, and can realize threaded connection on the end part of the oil distribution shaft to be processed, so that the drill jig and the oil distribution shaft can form an integral structure, the convenience and accuracy of the setting of the drill jig are ensured, the time for aligning and clamping the drill jig and the oil distribution shaft is reduced, the scribing process of the oil distribution shaft can be completed only by one-time assembly, the assembly positioning efficiency of the drill jig and the oil distribution shaft is greatly improved, the processing cost of the oil distribution shaft is reduced, and the drill jig has better practical value and popularization prospect.

Description

a drill

technical field

The utility model belongs to the technical field of metal processing, in particular to a drilling die.

Background technique

The oil distribution shaft is an important part of the hydraulic motor, and its distinctive feature is that there are through oil passage holes in the axial and radial directions. At the same time, for some special oil distribution shafts, it not only needs to provide hydraulic oil for the hydraulic motor, but also needs to be an important connecting component connecting the hydraulic system with the main frame of the device.

Under normal circumstances, one end of the oil distribution shaft is provided with a hydraulic motor mounting countersunk hole, and on the end face of the oil distribution shaft there are several deep holes for different oil cavities and several sets of positioning and installation screw holes, and the outer circle of the oil distribution shaft is provided with Multiple sets of keyways and oil holes. In the traditional processing process, the main process of the above-mentioned oil distribution shaft often includes: turning (processing the outer circle and end face) - pliers (drilling the end hole and marking the outer circular hole, groove position dimension line) - milling (processing the outer circular hole) , groove)-grinding (grinding each sealing position of the outer circle) and other processes.

In the above process, the machining of each hole on the oil distribution shaft often needs to rely on the fitter to mark the positioning on the indexing head. Although it can meet the actual machining needs to a certain extent, the workload is large, the efficiency is low, and the accuracy is poor. . At the same time, because the openings on the end face of the oil distribution shaft are denser and closer to the edge, most of the conventional drilling dies have no pressing position on the end face, and there is no precise positioning reference between the drilling dies and the oil distribution shaft, and the operator can only rely on manual operation. Adjustment and visual inspection ensure that the jig is coaxial with the part. On the other hand, after the existing drill die and the part are adjusted to be coaxial, since the drill die and the part are of a split structure, it is still necessary to transfer the angular reference of the drill die to the part, and then use the upper indexing head to draw the outer circle each feature. Although this method can save the scribing time of each hole on the end face, it increases the adjustment time of the drill die and the parts, and often requires two clamping, which seriously affects the efficiency of the drill die and the parts positioning, and increases the processing of the oil distribution shaft. cost.

Utility model content

Aiming at one or more of the above defects or improvement needs of the prior art, the utility model provides a drill die, which can realize the fast and accurate positioning of the drill die and the oil distribution shaft parts, and improve the machining efficiency of the oil distribution shaft And precision, reduce the processing cost of oil distribution shaft.

In order to achieve the above purpose, the present invention provides a drill die, which comprises a body in a cover-cap structure;

One end face of the main body is coaxially provided with an end hole, and an inner thread is formed on the inner peripheral wall of the end hole, so that the main body can be connected to the to-be-machined end of the corresponding shaft part in the form of a threaded connection. ;

The end face of the body away from the end hole is provided with a number of machining positioning holes communicating with the end hole and at least one fastening screw mounting hole; the machining positioning hole is used for the corresponding holes on the end to be machined. processing and positioning; the fastening screw mounting holes are used for installing fastening screws when the drill die is connected to the end to be processed, so that the end of the fastening screw abuts the end face of the end to be processed;

At the same time, an angular reference is provided on the end face of the body away from the end hole and/or the outer peripheral ring of the body upwards, for positioning the machining feature upward on the outer peripheral ring of the shaft part.

As a further improvement of the present invention, the shaft parts are oil distribution shafts, with a number of axial oil holes opened between the two end faces, and a number of radial oil holes opened on the outer circumference of the oil distribution shaft.

As a further improvement of the present invention, the inner peripheral wall of the bottom of the end hole is provided with a thread undercut along the circumferential direction, and the inner diameter of the thread undercut is not less than the outer diameter of the end to be machined.

As a further improvement of the present invention, the axial length of the thread undercut groove is 3 mm to 5 mm.

As a further improvement of the present invention, the angular datum is set by at least one of engraving lines, milling grooves, and setting boss planes.

As a further improvement of the present invention, a drill sleeve is installed in the processing positioning hole.

As a further improvement of the present invention, the outer peripheral surface of the main body is subjected to nitriding surface hardening treatment.

As a further improvement of the present invention, the material of the drill die is the same as the material of the shaft parts.

The above improved technical features can be combined with each other as long as they do not conflict with each other.

In general, compared with the prior art, the above technical solutions conceived by the present utility model have beneficial effects including:

(1) The drill die of the present utility model, by setting the drill die into a cover-type structure, makes it connect to the end to be processed of the shaft part by means of screw connection, and processes the end face shaft hole of the end. Positioning simplifies the matching and positioning process of the drill die and the parts, ensures the accuracy of the drill die positioning, and greatly shortens the matching and positioning time of the two, improves the accuracy and efficiency of the drilling die-based processing, and reduces the corresponding shaft types. The machining cost of the part.

(2) The drill die of the present utility model, by setting the thread undercut at the bottom of the end hole of the drill die, so that when the drill die is matched with the part, the end face of the part can abut the bottom surface of the end hole, which further improves the drilling die and the part. The accuracy and reliability of the parts matching ensure the machining accuracy of the parts.

(3) The drill die of the present utility model is simple in structure and easy to use, and can realize the threaded connection on the end of the oil distribution shaft to be processed, so that the drill die and the oil distribution shaft can form an integral structure and ensure the convenient setting of the drill die It reduces the time for the alignment adjustment of the drill die and the oil distribution shaft, and only needs one assembly to complete the marking process of the oil distribution shaft, which greatly improves the assembly and positioning efficiency of the drill die and the oil distribution shaft, and reduces the oil distribution shaft. The processing cost of the shaft has good practical value and promotion prospects.

Description of drawings

Fig. 1 is the structural cross-sectional view of the drill die in the embodiment of the present utility model;

Fig. 2 is the left side view of the structure of the drill die in the embodiment of the present invention;

Fig. 3 is the structural front view of the oil distribution shaft in the embodiment of the present invention;

4 is an E-E sectional view of the oil distribution shaft in the embodiment of the present utility model;

Fig. 5 is the structural right side view of the oil distribution shaft in the embodiment of the present invention;

In all drawings, the same reference numerals represent the same technical features, specifically:

1. Drilling die; 101, end hole; 102, internal thread; 103, thread undercut; 104, angular reference; 105, machining positioning hole; 106, set screw mounting hole;

2. Oil distribution shaft; 201, small diameter end; 202, large diameter end; 203, external thread; 204, radial oil hole; 205, axial oil hole.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as there is no conflict with each other.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships 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 the indicated A device or element 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 addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

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 Connected, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction between the two elements, unless otherwise clearly defined. 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 present invention, unless otherwise expressly specified and defined, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or the first and second features through an intermediary indirect contact. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

Example:

Please refer to FIG. 1 and FIG. 2 , the drill die 1 in the preferred embodiment of the present invention includes a body with a cover-type structure. An end hole 101 is coaxially opened on one side of the body, and an inner peripheral wall of the end hole 101 is formed. An inner thread 102 is provided on the upper part, so that the drill die 1 can be connected to the end of the oil distribution shaft 2 to be processed in the form of thread matching.

In a preferred embodiment, the oil distribution shaft 2 to be processed is shown in FIG. 3 to FIG. 5 , which includes a small diameter end 201 and a large diameter end 202 that are coaxially arranged, and an end surface of the large diameter end 202 is provided with a Match the mounting counterbore of the hydraulic motor. Correspondingly, axially extending axial oil holes 205 need to be formed between the two end surfaces of the oil distribution shaft 2 , and several radial oil holes 204 communicating with the corresponding axial oil holes 205 are formed on the outer circumference of the small diameter end 201 .

In order to match the drill die 1 with the oil distribution shaft 2 , an outer thread 203 is provided on the outer circumference of the end of the small diameter end 201 away from the large diameter end 202 along the circumferential direction for matching with the thread of the inner thread 102 of the drill die 1 . Obviously, in actual use, the oil distribution shaft 2 that is matched and processed by the drilling die 1 in the preferred embodiment needs to be provided with an external thread 203 at the end of the small diameter end 201 . For the oil distribution shaft 2 with the external thread 203 provided at the end of the small diameter end 201, the above-mentioned drill die 1 can be used directly, while for the oil distribution shaft 2 that cannot be provided with the external thread 203 on the outer circumference of the small diameter end 201, it can be used in Before drilling, a certain length of matching section is reserved at the end of the small diameter end 201 as a machining allowance, and an external thread 203 is correspondingly opened on the outer circumference of the matching section. After the drilling of the oil distribution shaft 2 is completed, The above machining allowance can be cut off.

It can be understood that the drill die 1 in the preferred embodiment can meet the processing of different types of oil distribution shafts 2. When the outer diameter of the small diameter end 201 is different, the drill die 1 with the corresponding end hole 101 size can be replaced accordingly.

In more detail, the inner peripheral wall of the bottom of the end hole 101 in the preferred embodiment is provided with a thread undercut 103 along the circumferential direction, and its axial length is preferably 3mm-5mm, and communicates with the bottom surface of the end hole 101 . Correspondingly, the inner diameter of the thread relief groove 103 is not less than the outer diameter of the end of the small diameter end 201, so that when the drill die 1 is coaxially matched with the small diameter end 201, the end face of the small diameter end 201 can abut the bottom surface of the end hole 101, so as to ensure the two the accuracy of the match.

At the same time, in order to realize the reliability of the matching of the drill die 1 and the oil distribution shaft 2, and to prevent the drill die 1 from rotating or shaking relative to the small diameter end 201 during use, at least one through-hole is provided on the outer end face of the drill die 1 along the axial direction. The set screw mounting hole 106 of the end hole 101 is used for the threaded installation of the set screw, so that when the drill die 1 matches the oil distribution shaft 2, the end of the set screw can abut against the small diameter end 201. end face, to ensure the reliability of the setting of the drill die 1.

Obviously, the oil holes to be machined corresponding to the oil distribution shaft 2 are also required on the outer end face of the drill die 1. Specifically, a number of machining positioning holes 105 are provided for the axial oil holes 205 to be machined, as shown in FIG. The positioning of several threaded connection holes on the end face of the oil hole 205 and/or the small diameter end 201 during processing. For example, in the oil distribution shaft 2 shown in FIG. 5 , the end face of the small diameter end 201 is provided with four axial oil holes 205 and four positioning and installation screw holes along the axial direction; correspondingly, the end face of the drilling die 1 There are eight machining positioning holes 105 for communicating end holes 101 .

Preferably, a drill sleeve can be correspondingly installed in the machining positioning hole 105 in the preferred embodiment, and it is further preferable to perform a surface hardening treatment such as nitriding on the entire drill die 1 to improve the service life of the drill die 1 and ensure the machining of the positioning hole 105 Positioning accuracy during drilling. In addition, in the actual setting, the material of the drilling die 1 is preferably the same as the matching oil distribution shaft 2 .

Further, at least one angular reference 104 is provided on the outer peripheral wall surface of the drilling die 1, which is preferably set by means of engraving, milling grooves or setting a boss plane, and the angular reference 104 can be set on the drilling die 1. The outer end face of the drill die 1 can also be arranged on the outer peripheral wall surface of the drill die 1. For example, in a preferred embodiment, an angular reference line is simultaneously set on the outer end face and the outer peripheral wall surface, as shown in Figure 1 and Figure 2 .

The corresponding setting of the angular reference 104 can be used to locate the corresponding radial oil holes 204 after the axial oil holes 205 are opened, so that the radial oil holes 204 can be accurately communicated with the corresponding axial oil holes 205 . During the specific operation, the machining of the radial oil hole 204 needs to be realized by the matching work of the indexing head, and the outer peripheral wall surface of the small diameter end 201 is accurately scribed along the axial direction, so as to accurately locate the opening of the radial oil hole 204 position, and on this basis, the subsequent machining of the radial oil hole 204 is completed.

More specifically, in the preferred embodiment, the scribing method for positioning the outer circle feature of the oil distribution shaft 2 using the above-mentioned drill die 1 includes the following processes:

(1) Match the drill die 1 to the small diameter end 201 of the oil distribution shaft 2 entering the clamp sequence, and prepare to draw the holes on the end face of the oil distribution shaft 2, the key grooves/oil hole positioning lines on the outer periphery, and the holes and grooves on the outer periphery. Processing and other processes, at this time, the sealing groove, end face sinking platform, and part of the outer circular surface of the oil distribution shaft 2 have been processed in place (some outer circular surfaces have a small amount of grinding).

(2) Connect the drill die 1 and the small diameter end 201 through the matching of the internal thread 102 and the external thread 203, so that the end face of the small diameter end 201 abuts the bottom surface of the end hole 101; Set the screw so that the end of the set screw is pressed against the end face of the small diameter end 201 to ensure that the drilling die 1 is installed firmly and there is no shaking between the drilling die 1 and the oil distribution shaft 2 .

(3) Assemble the matching drill die 1 and oil distribution shaft 2 on the indexing head, clamp the outer circumference of the large diameter end 202 of the oil distribution shaft 2, adjust the height gauge until it is the same height as the center of the indexing head, and then lock the height ruler.

(4) Rotate the indexing head until the angular reference 104 on the drill die 1 coincides with the cusp of the height gauge, so as to complete the angular reference determination of the oil distribution shaft 2, and then lock the indexing head.

(5) Identify each outer circle feature on the angular reference line of the oil distribution shaft 2, move the height gauge on the marking platform, and mark the outer circumference of the oil distribution shaft 2 along the axial direction to complete the corresponding keyway/hole angular line. Sure;

(6) Carry out scribing of non-angular lines. Loosen the indexing head and rotate the corresponding angle relative to the angular reference 104, adjust the corresponding position on the outer circumference of the oil distribution shaft 2 to the position of the original angular reference, after that, lock the indexing head, and follow step (5) in The operation completes the scribing of the angular line (drawn along the axial direction) on the outer circumference, and determines the opening position of the corresponding hole/slot on the angular line.

(7) Cooperate with the determination of the axial dimension of each machining feature, complete the scribing of the axial position line (delineated along the circumferential direction) of the corresponding machining feature on each angular line, and the intersection of the axial position line and the angular line is the corresponding The machining location of the external feature.

In actual operation, the scribing of the axial position line can be determined by using a vernier caliper, or after the entire part is removed from the indexing head, the large diameter end 202 can be placed horizontally on the platform, and then the height gauge can be used to carry out underline.

It can be understood that after completing the marking of each characteristic part on the outer circumference of the small diameter end 201, the parts can be removed from the indexing head and installed on the drilling machine, and each hole on the end surface of the small diameter end 201 can be carried out according to the positioning of the machining positioning hole 105. and complete the machining of each outer circle feature based on the positioning scribe line on the outer circumference of the oil distribution shaft 2.

The drill die in the utility model is simple in structure and easy to use, and can realize the threaded connection on the end of the oil distribution shaft to be processed, so that the drill die and the oil distribution shaft can form an integral structure, and the convenience of setting the drill die and the safety of the oil distribution shaft are ensured. Accuracy, reduces the time for alignment adjustment of the drill die and the oil distribution shaft, and only needs one assembly to complete the marking process of the oil distribution shaft, greatly improving the assembly and positioning efficiency of the drill die and the oil distribution shaft, and reducing the oil distribution shaft. Processing cost, has good practical value and promotion prospects.

Those skilled in the art can easily understand that the above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and replacements made within the spirit and principles of the present invention and Improvements, etc., should be included within the protection scope of the present invention.

Claims (8)

1. The drill jig is characterized by comprising a body in a sleeve cover type structure;

an end surface hole is coaxially formed in the end surface of one side of the body, and internal threads are formed in the inner peripheral wall surface of the end surface hole, so that the body can be connected to the end part to be machined of the corresponding shaft part in a threaded connection mode;

the end face of the body, which is far away from the end face hole, is provided with a plurality of processing positioning holes communicated with the end face hole and at least one fastening screw mounting hole; the processing positioning hole is used for processing and positioning a corresponding hole on the end part to be processed; the fastening screw mounting hole is used for mounting a fastening screw when the drill jig is connected to the end part to be processed, so that the end part of the fastening screw abuts against the end surface of the end part to be processed;

and simultaneously, the body deviates from an angle reference is upwards arranged on the end face of the end face hole and/or the peripheral ring of the body and is used for positioning the processing characteristics of the shaft part in the peripheral ring direction.

2. The jig according to claim 1, wherein the shaft-like member is an oil distribution shaft, and a plurality of axial oil holes are formed between both end surfaces of the oil distribution shaft, and a plurality of radial oil holes are formed in an outer periphery of the oil distribution shaft.

3. The jig according to claim 1, wherein a thread relief groove having an inner diameter not smaller than an outer diameter of the end portion to be machined is formed in an annular direction on an inner peripheral wall surface of a bottom portion of the end surface hole.

4. The jig as claimed in claim 3, wherein the axial length of the thread relief groove is 3mm to 5 mm.

5. The jig according to any one of claims 1 to 4, wherein the angular reference is provided by at least one of scoring, milling a groove, providing a land plane.

6. The drill jig as claimed in any one of claims 1 to 4, wherein a drill bushing is installed in the machining positioning hole.

7. The jig as claimed in any one of claims 1 to 4, wherein the outer peripheral surface of the body is subjected to nitriding surface hardening treatment.

8. The jig according to any one of claims 1 to 4, wherein the jig is made of the same material as that of the shaft-like part.

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