Special-shaped shell part marking and positioning device

Abstract

The utility model belongs to the technical field of machining, and discloses a special-shaped shell part lineation positioning device which is used for machining a longitudinal inclined hole in a transverse through hole structure and comprises a positioning body assembly and an installation assembly, the positioning body assembly is installed on the transverse through hole structure through the installation assembly, and the installation assembly is provided with a positioning shaft based on a transverse through hole. The positioning body assembly is provided with a reference surface A, a reference surface B, a reference surface C and a reference surface D, the reference surface A is parallel to the central axis of the transverse through hole, the reference surface B is parallel to the central axis of the transverse through hole, the reference surface C is parallel to the central axis of the longitudinal inclined hole, and the reference surface D is parallel to the front end face of the transverse through hole structure; the reference surface A is perpendicular to the reference surface B, the reference surface C and the reference surface D; according to the utility model, the angle position relationship among several datum lines of a part with O as the intersection point is converted into the relative position relationship among the datum planes corresponding to the scribing positioning device. In the scribing process, an operator only needs to turn over the scribing positioning device, use different positioning reference planes of the scribing positioning device and place the scribing positioning device on the scribing platform, the part can be conveniently located at the scribing position, all datum lines are scribed, operation is easy and convenient, scribing time is short, scribing consistency is good, and product quality is stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and relates to a marking and positioning device for special-shaped shell parts, in particular to a replaceable marking and positioning device for special-shaped shell parts with acute spatial angles. Background Art

[0002] like Figure 1 、 Figure 2 As shown in the figure, the part to be processed is a casting with a special shape. After completing the machining of the φA hole of the special shape part, it is necessary to machine the oblique through hole in the special shape part, namely the φB hole. The position and angle of the φB hole have high precision requirements. The conventional machining method is as follows: During the rough machining process, the process datum of the part should be determined first. The lathe operator first clamps the outer circle of the blank to align it and then rough-machines the φA hole and its end face M1 of the part. Then, the fitter uses the φA hole and its end face M1 to locate and mark out Figure 1 The four process datum lines aa, bb, cc, and dd are shown. Due to the unique structure of this part, the axis of the φA hole and the axis of the φB hole form an acute angle of 74°. Traditionally, the fitter's method for determining process datum lines involves using a universal dividing head to mark each line on a workbench. Each time a line is marked, the worker rotates the dividing head to position the part for marking. This method has drawbacks: cumbersome indexing, long marking times, poor marking consistency, and low production efficiency, making it difficult to meet the requirements of mass production. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a marking and positioning device for special-shaped shell parts, which can overcome the problems of the traditional method of using a universal dividing head to mark on a platform, such as cumbersome operation, long time consumption, poor marking consistency and low production efficiency.

[0004] The technical solution of the utility model is as follows:

[0005] A marking and positioning device for special-shaped shell parts is used for processing longitudinal inclined holes in transverse through-hole structures. It includes a positioning body assembly and a mounting assembly. The positioning body assembly is mounted on the transverse through-hole structure via the mounting assembly. The mounting assembly is provided with a positioning axis based on the transverse through-hole. The positioning body assembly has datum plane A, datum plane B, datum plane C and datum plane D. Datum plane A is parallel to the central axis of the transverse through-hole, datum plane B is parallel to the central axis of the transverse through-hole, datum plane C is parallel to the central axis of the longitudinal inclined hole, and datum plane D is parallel to the front end face of the transverse through-hole structure. Datum plane A is perpendicular to datum plane B, datum plane A is perpendicular to datum plane C, and datum plane A is perpendicular to datum plane D.

[0006] Further, the positioning structure comprises a bottom plate and a support plate, the bottom plate is a rectangular flat plate structure, the support plate is a right trapezoidal plate structure, the trapezoidal bottom of the support plate is connected with the upper surface of the bottom plate, the right angle side of the support plate is in contact with the end surface of the horizontal through hole of the horizontal through hole structure, and the non-right angle side of the support plate is the reference surface C.

[0007] Further, the bottom plate is provided with the reference surface B, the front side plate or the rear side plate of the bottom plate is the reference surface A, and the left side plate or the right side plate of the bottom plate is the reference surface D.

[0008] Further, the mounting assembly further comprises a double-headed screw rod and a pressing plate, one end of the double-headed screw rod is connected with the positioning body assembly, the positioning shaft is arranged outside the double-headed screw rod, the radial outer side of the positioning shaft is positioned with the inner wall surface of the horizontal through hole of the horizontal through hole structure, the positioning body assembly is positioned outside the opening surface on one side of the horizontal through hole of the horizontal through hole structure, the other end of the double-headed screw rod passes through the horizontal through hole, the pressing plate is fixed outside the double-headed screw rod at the other end of the horizontal through hole, and the pressing plate is positioned outside the opening surface on the other side of the horizontal through hole of the horizontal through hole structure.

[0009] Further, the fast-changing pressing plate and a second shoulder nut are further included, the internal thread of the second shoulder nut is matched with the external thread of the double-headed screw rod, the second shoulder nut is pressed on the outer side of the pressing plate through the fast-changing pressing plate, the inner diameter of the central through hole of the pressing plate is larger than the outer diameter of the second shoulder nut, and the fast-changing pressing plate is a pad block structure with a tiger mouth on one side, and the inner diameter of the tiger mouth is larger than the outer diameter of the double-headed screw rod.

[0010] Further, the inner side of the pressing plate is provided with a circular boss, and the radial outer annular surface of the circular boss is matched with the inner wall surface of the horizontal through hole.

[0011] Further, the positioning shaft is provided with a large annular surface and a small annular surface coaxially, the large annular surface of the positioning shaft is matched with the inner wall surface of the horizontal through hole, and the small annular surface of the positioning shaft is matched with the cylindrical concave surface arranged on the positioning body assembly.

[0012] The technical effect of the utility model is as follows:

[0013] By adopting the above technical scheme, the angle position relationship between the plurality of reference lines of the part with O as the intersection point is converted into the relative position relationship between the corresponding reference planes of the scribing positioning device. When scribing, the operator only needs to turn over the scribing positioning device, uses different positioning reference planes thereof, places the scribing positioning device on the scribing platform, and can conveniently make the part be in the scribing position and scribe each reference line. By using this scribing method, the worker operation is simple, the scribing time is short, the scribing consistency is good, the product quality is stable, meanwhile, the scribing reference position is determined by quickly turning over the reference surface of the scribing device, without complicated indexing operation like using an indexing head, the part scribing reference position can be quickly converted, and the bench worker scribing efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the present application, and for the ordinary skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0015] Figure 1 is a schematic view of a typical structure of a part to be processed;

[0016] Figure 2 is Figure 1 B and C direction enlarged schematic view of

[0017] Figure 3 is a main sectional view of the line marking positioning device structure of the present application:

[0018] Figure 4 is a partial sectional view of the line marking positioning device structure of the present application

[0019] Wherein, 1 - bottom plate, 2 - support plate, 3 - double head screw, 4 - positioning shaft, 5 - first shoulder nut, 6 - second shoulder nut, 7 - quick change pressure plate, 8 - pressure plate, 9 - pin, 10 - screw, 11 - reference surface A, 12 - reference surface B, 13 - reference surface C, 14 - reference surface D. DETAILED DESCRIPTION

[0020] This part is an embodiment of the present application, which is used to explain and illustrate the technical scheme of the present application. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the direction or positional relationship based on the orientation or position relationship of the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or the case must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can be explicitly or implicitly included. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrated connections; mechanical connections, point connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0023] Example 1:

[0024] A marking and positioning device for special-shaped shell parts is used for processing longitudinal inclined holes in transverse through-hole structures. It includes a positioning body assembly and a mounting assembly. The positioning body assembly is mounted on the transverse through-hole structure via the mounting assembly. The mounting assembly is provided with a positioning axis 4 based on the transverse through-hole. The positioning body assembly has a reference plane A11, a reference plane B12, a reference plane C13 and a reference plane D14. The reference plane A11 is parallel to the central axis of the transverse through-hole, the reference plane B12 is parallel to the central axis of the transverse through-hole, the reference plane C13 is parallel to the central axis of the longitudinal inclined hole, and the reference plane D14 is parallel to the front end face of the transverse through-hole structure. The reference plane A11 is perpendicular to the reference plane B12, the reference plane A11 is perpendicular to the reference plane C13, and the reference plane A11 is perpendicular to the reference plane D14.

[0025] The positioning structure includes a base plate 1 and a support plate 2. The base plate 1 is a rectangular flat plate structure, and the support plate 2 is a right-angled trapezoidal plate structure. The trapezoidal bottom of the support plate 2 is connected to the upper surface of the base plate 1, and the right-angled side of the support plate 2 is in contact with the end face of the transverse through hole of the transverse through hole structure for positioning. The trapezoidal non-right-angled side of the support plate 2 is the reference plane C13.

[0026] The bottom surface of the bottom plate 1 is the reference surface B12, the front side plate or the rear side surface of the bottom plate 1 is the reference surface A11, and the left side surface or the right side surface of the bottom plate 1 is the reference surface D14.

[0027] The mounting assembly also includes a double-headed screw 3 and a pressure plate 8. One end of the double-headed screw 3 is connected to the positioning body assembly. The positioning shaft 4 is arranged outside the double-headed screw 3. The radial outer side of the positioning shaft 4 is positioned with the inner wall surface of the transverse through hole of the transverse through hole structure. The positioning body assembly is positioned outside the starting surface of one side of the transverse through hole of the transverse through hole structure. The double-headed screw 3 passes through the other end of the transverse through hole. The pressure plate 8 is fixed outside the double-headed screw 3 at the other end of the transverse through hole. The pressure plate 8 is positioned outside the starting surface of the other side of the transverse through hole of the transverse through hole structure.

[0028] It also includes a quick-change pressure plate 7 and a second shoulder nut 6. The internal thread of the second shoulder nut 6 cooperates with the external thread of the double-headed screw 3. The second shoulder nut 6 is pressed on the outside of the pressure plate 8 through the quick-change pressure plate 7; the inner diameter of the central through hole of the pressure plate 8 is larger than the outer diameter of the second shoulder nut 6. The quick-change pressure plate 7 is a pad structure with a tiger's mouth on one side, and the inner diameter of the tiger's mouth is larger than the outer diameter of the double-headed screw 3.

[0029] The inner side of the pressure plate 8 is provided with a circular boss, and the radial outer annular surface of the circular boss is matched with the inner wall surface of the transverse through hole.

[0030] The positioning shaft 4 is provided with a coaxial large ring surface and a small ring surface. The large ring surface of the positioning shaft 4 cooperates with the inner wall surface of the transverse through hole, and the small ring surface of the positioning shaft 4 cooperates with the cylindrical concave surface provided on the positioning body assembly.

[0031] Example 2:

[0032] A marking and positioning device for special-shaped shell parts with acute spatial angles, comprising a base plate 1, a support plate 2, a double-headed screw 3, a replaceable positioning shaft 4, a shoulder nut 5, a shoulder nut 6, a quick-change pressure plate 7, a pressure plate 8, a pin 9, and a screw 10. The base plate 1 and the support plate 2 are connected by the pin 9 and the screw 10. The connecting holes of the base plate 1 and the support plate 2 are machined, and the pin 9 is pressed into engagement with the connecting holes of the base plate 1 and the support plate 2. After the base plate 1 and the support plate 2 are assembled, the two side surfaces are ground flush to ensure that the reference surface is flat. The replaceable positioning shaft 4 is pressed into engagement with the support plate 2 and is fixedly connected to the support plate 2 through the double-headed screw 3 and the shoulder nut 5. When marking, as shown in FIG. Figure 2 Clamp the part in the position shown, locate it with the part φA hole and its end face M1, use the pressure plate 8, quick-change pressure plate 7, and shoulder nut 7 to lightly press the right end face of the part, first use the marking device reference surface 1 as the reference, use the height gauge to measure the center height of the replaceable positioning shaft 4, determine the angular position of the part according to the center of the B and C directions, tighten the shoulder nut 7, and clamp the part with the quick-change pressure plate 7 and pressure plate 8, then use the height to plan the aa line, turn over the marking positioning device, use its reference surface 2 as the reference, use the height gauge to measure the center height of the replaceable positioning shaft 4, and then mark the bb line. After the circumference is reached, flip the marking and positioning device over, using its datum plane 3 as the reference, and align the axis of the φB hole with the datum plane 3. Next, use a height gauge to measure the center height dimensions of the four directions B and C, and mark the cc line around the circle based on this dimension. The intersection point o of the bb and cc lines is obtained on the outer circle of the part blank, which is also the axial reference point for the φA and φB holes of the part. Finally, flip the marking and positioning device over, using its datum plane 4 as the reference, and use a height gauge to mark the dd line through the intersection point O of the bb and cc lines, completing the marking of the four datum lines aa, bb, cc, and dd of the part. Loosen the shoulder nut 6, remove the quick-change pressure plate 7 and pressure plate 8 in sequence, and finally remove the part and place it in the product box before marking the next part.

[0033] By adopting the marking device, the angle position relationship between the several reference lines of the part with O as the intersection point is converted into the relative position relationship between the corresponding reference planes of the marking positioning device. When marking, the operator only needs to turn over the marking positioning device, uses different positioning reference planes, places the marking positioning device on the marking platform, so that the part can be conveniently placed in the marking position and each reference line is marked. By using the marking method, the worker operation is simple, the marking time is short, the marking consistency is good, the product quality is stable, meanwhile, the marking reference position is determined by quickly turning over the reference plane of the marking device, without indexing operation, the part marking reference position can be quickly converted, and the bench worker marking efficiency is greatly improved.

[0034] In the embodiment, when the positioning holes of the profiled shell parts of the same family with the same spatial included angle have different specifications, according to the needs, as shown in Figure 2 the marking positioning device is used to replace the replaceable positioning spindle 4 and the pressing plate 7, so that the part rapid changeover is realized.

[0035] Embodiment 3:

[0036] A marking positioning device for profiled shell parts with an acute angle of 74°, which comprises a bottom plate, a support block, a double-headed screw, a replaceable positioning shaft, a shoulder nut 1, a shoulder nut 2, a quick-change pressing plate, a pressing plate, a pin (2), and a screw (2). The bottom plate and the support plate are connected by two pins and two screws, the connection holes of the bottom plate and the support plate are matched and processed, the pins are matched and pressed with the connection holes of the bottom plate and the support plate, and the two side surfaces of the bottom plate and the support plate are ground to be flush after assembly to ensure the flatness of the reference surface. The replaceable positioning shaft is matched and pressed with the support plate and is fixedly connected with the support plate by the double-headed screw and the shoulder nut. When marking, as shown in Figure 2The part is clamped in the shown position, the part is positioned by the hole φA and the end face M1, the right end face of the part is lightly pressed by the pressing plate, the quick-change pressing plate and the shoulder nut 2, the center height dimension of the replaceable positioning shaft is measured by the height gauge, the angular position of the part is determined according to the four-square center of the B direction and the C direction, the shoulder nut 2 is tightened, the part is clamped by the quick-change pressing plate and the pressing plate, then, the a-a line is drawn by the height gauge, the scribing device is turned over, the center height dimension of the replaceable positioning shaft is measured by the height gauge according to the reference surface 2 of the scribing device, then, the b-b line is drawn for one turn, the scribing device is turned over, the hole axis of the hole φB is parallel to the reference surface 3, then, the height dimension of the four-square center of the B direction and the C direction is measured by the height gauge, the c-c line is drawn for one turn according to the dimension, and the intersection O of the b-b line and the c-c line on the outer circle of the part blank is also the axial reference point of the holes φA and φB, finally, the scribing device is turned over, the d-d line is drawn by the height gauge through the intersection O of the b-b line and the c-c line according to the reference surface 4 of the scribing device, and finally, the scribing work of the four reference lines a-a, b-b, c-c and d-d of the part is completed.

[0037] The utility model relates to a scribing positioning device for special-shaped shell parts with acute space included angle, which is a flexible scribing positioning device capable of being implemented on the production site and quickly realizing the scribing position of the part, and has the following characteristics:

[0038] For similar structure parts with the same space included angle and different positioning hole φA sizes, the quick change of the parts can be realized by only replacing the replaceable positioning shaft of the scribing positioning device; for similar structure parts with different space included angles and the same positioning hole φA size, the quick change of the parts can be realized by only replacing the support plate of the scribing positioning device, and the flexibility is good.

[0039] When designing the pressing plate structure of the scribing positioning device, the center hole size should be greater than the maximum size of the pressing nut, so that after the scribing of the part is completed, the pressing nut is slightly loosened, the quick-change pressing plate is removed, the pressing plate can be conveniently removed from the scribing positioning device, and the part can be quickly removed, the quick change and quick assembly of the part are realized, and the production efficiency is high.

[0040] During scribing, Figure 2The part is clamped in the shown position, and the part is positioned by the part φA hole and the end face M1. A light pressure is applied to the right end face of the part by the pressing plate, the quick-change pressing plate and the shoulder nut 2. The center height dimension of the replaceable positioning shaft is measured by the height gauge, and the angular position of the part is determined in the four directions of B, C, and then the shoulder nut 2 is tightened, the part is clamped by the quick-change pressing plate and the pressing plate, and then the a-a line is drawn by the height gauge. The scribe positioning device is turned over, the center height dimension of the replaceable positioning shaft is measured by the height gauge, and then the b-b line is drawn. The scribe positioning device is turned over in turn, and the c-c line and the d-d line of the part are drawn by the height gauge respectively based on the reference surface 3 and the reference surface 4 of the scribe positioning device. Finally, the scribe work of the four reference lines a-a, b-b, c-c and d-d of the part is completed.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application.

Claims

1. A marking and positioning device for special-shaped shell parts, characterized in that: The invention relates to a device for processing a longitudinal inclined hole in a transverse through-hole structure, comprising a positioning body component and a mounting component, wherein the positioning body component is mounted on the transverse through-hole structure via the mounting component, and the mounting component is provided with a positioning axis (4) based on the transverse through-hole; the positioning body component is provided with a reference plane A (11), a reference plane B (12), a reference plane C (13) and a reference plane D (14); the reference plane A (11) is parallel to the central axis of the transverse through-hole, the reference plane B (12) is parallel to the central axis of the transverse through-hole, the reference plane C (13) is parallel to the central axis of the longitudinal inclined hole, and the reference plane D (14) is parallel to the front end face of the transverse through-hole structure; the reference plane A (11) is perpendicular to the reference plane B (12), the reference plane A (11) is perpendicular to the reference plane C (13), and the reference plane A (11) is perpendicular to the reference plane D (14).

2. A marking and positioning device for special-shaped shell parts according to claim 1, characterized in that: The positioning structure comprises a base plate (1) and a support plate (2); the base plate (1) is a rectangular flat plate structure; the support plate (2) is a right-angled trapezoidal plate structure; the trapezoidal bottom of the support plate (2) is connected to the upper surface of the base plate (1); the right-angled side surface of the support plate (2) contacts and positions the end surface of the transverse through hole of the transverse through hole structure; and the trapezoidal non-right-angled side surface of the support plate (2) is a reference surface C (13).

3. The marking and positioning device for special-shaped shell parts according to claim 2, characterized in that: The bottom surface of the bottom plate (1) is a reference surface B (12), the front side plate or the rear side surface of the bottom plate (1) is a reference surface A (11), and the left side surface or the right side surface of the bottom plate (1) is a reference surface D (14).

4. The marking and positioning device for special-shaped shell parts according to claim 1, characterized in that: The mounting assembly further comprises a double-headed screw (3) and a pressure plate (8), one end of the double-headed screw (3) is connected to the positioning body assembly, the positioning shaft (4) is arranged outside the double-headed screw (3), the radial outer side of the positioning shaft (4) is positioned with the inner wall surface of the transverse through hole of the transverse through hole structure, the positioning body assembly is positioned outside the opening surface of one side of the transverse through hole of the transverse through hole structure, the double-headed screw (3) passes through the other end of the transverse through hole, the pressure plate (8) is fixed outside the double-headed screw (3) at the other end of the transverse through hole, and the pressure plate (8) is positioned outside the opening surface of the other side of the transverse through hole of the transverse through hole structure.

5. The marking and positioning device for special-shaped shell parts according to claim 4, characterized in that: It also includes a quick-change pressure plate (7) and a second shoulder nut (6), the internal thread of the second shoulder nut (6) cooperates with the external thread of the double-headed screw (3), and the second shoulder nut (6) is pressed on the outer side of the pressure plate (8) through the quick-change pressure plate (7); the inner diameter of the central through hole of the pressure plate (8) is larger than the outer diameter of the second shoulder nut (6), and the quick-change pressure plate (7) is a pad structure with a tiger's mouth on one side, and the inner diameter of the tiger's mouth is larger than the outer diameter of the double-headed screw (3).

6. The marking and positioning device for special-shaped shell parts according to claim 4, characterized in that: The inner side of the pressing plate (8) is provided with a circular boss, and the radial outer ring surface of the circular boss is matched with the inner wall surface of the transverse through hole.

7. The marking and positioning device for special-shaped shell parts according to claim 1, characterized in that: The positioning shaft (4) is provided with a coaxial large ring surface and a small ring surface. The large ring surface of the positioning shaft (4) matches with the inner wall surface of the transverse through hole, and the small ring surface of the positioning shaft (4) matches with the cylindrical concave surface provided on the positioning body component.

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