Positioning and drilling clamp for ball head parts

Abstract

The utility model provides a positioning and drilling clamp for ball head parts. The positioning and drilling clamp comprises a drill jig base and a pressing plate. The drilling jig base comprises five drilling guide faces, normal guide holes are formed in the guide faces and correspond to five normal holes of the ball head parts respectively, accurate positioning on the spherical surface is achieved, and the drilling jig is simple in structure, capable of being used repeatedly and good in economic effect. According to the device, positioning and alignment of the ball head parts can be achieved, the machining precision is guaranteed, the influence of human factors on drilling machining is reduced, and the rate of finished products is increased; the drilling clamp is easy to use, simple in process and high in working efficiency, and a new manufacturing thought is provided for ball head parts of the same type.

Description

Technical Field

[0001] The utility model relates to the field of drilling processing fixtures, in particular to a ball head type parts positioning drilling fixture. Background Art

[0002] In the traditional benchwork industry, drilling of spherical parts has always been a difficult point. When drilling on a spherical surface, the positioning reference is difficult to determine and the normal is difficult to align, making it difficult to ensure dimensional accuracy.

[0003] like Figure 1 A special ball head-type part shown in the figure has a flat ball head 1 at one end, a vertical longitudinal hole 3 is provided on the flat surface, and five normal holes 2 are evenly distributed along the circumference of the arc surface. The normal hole 2 not only has high dimensional accuracy requirements, but also the five normal holes 2 have perpendicularity requirements relative to the longitudinal hole 3 on the flat surface.

[0004] The traditional processing method is to first manually mark the five circumferential holes on the flat ball head 1, then complete the drilling and reaming of the flat surface longitudinal hole 3, and then insert the self-made mandrel based on the longitudinal hole 3, and then clamp and position the indexing head, and then realize the step-by-step processing of the five circumferential holes by adjusting the marking position and the rotation angle. This process is not only difficult to operate, but also difficult to ensure the size and position accuracy, so the scrap rate of the workpiece is extremely high; in addition, the indexing head needs to be manually adjusted once for each completed hole, and the marking and clamping processes are cumbersome, resulting in low processing efficiency of the entire part. Utility Model Content

[0005] The utility model aims to solve the problems of difficult operation, scrap rate of workpieces, complicated procedures and low processing efficiency in the prior art, and proposes a positioning drilling fixture for ball head parts.

[0006] To achieve the above purpose, the technical solution provided by the utility model is:

[0007] A positioning drilling fixture for ball head parts, which is special in that:

[0008] Includes jig base and pressure plate;

[0009] One end of the ball head part is an oblate ball head, and a vertical longitudinal hole is provided on the flat surface; the oblate ball head is provided with five normal holes evenly distributed along the circumference of the arc surface and are perpendicular to the longitudinal hole;

[0010] The drilling template base is a hexagonal prism, and the six sides of the drilling template base include five drilling guide surfaces and one positioning surface;

[0011] A positioning groove is provided on the upper end of the positioning surface inwardly along the vertical direction of the positioning surface;

[0012] The shape of the pressing plate matches the shape of the positioning groove; the pressing plate is fastened in the positioning groove, and the outer side surface of the pressing plate is flush with the outer side surface of the drilling template base;

[0013] The bottom surface of the pressure plate and the bottom surface of the positioning groove are provided with a limit cavity that can be combined, and the inner cavity profile of the two limit cavities after being combined matches the ball head parts;

[0014] The pressing plate is provided with a longitudinal guide hole, which is opposite to the longitudinal hole of the ball head part and has the same size;

[0015] The five drilling guide surfaces are all provided with normal guide holes, and the five normal guide holes are respectively opposite to the five normal holes of the ball head parts in position and have the same size.

[0016] Further,

[0017] The longitudinal hole is arranged at the center of the flat surface, and the distances between the axis of the longitudinal hole and the five normal holes are equal; the axes of the five normal holes are coplanar, and the plane is parallel to the positioning surface.

[0018] Further,

[0019] Also included are two fastening screws;

[0020] The pressing plate and the positioning groove are provided with two corresponding threaded mounting holes, and the pressing plate is fixed in the positioning groove by two fastening screws.

[0021] Further,

[0022] The threaded mounting hole of the pressing plate is a countersunk hole.

[0023] The advantages of the utility model are:

[0024] 1. This drilling fixture can achieve precise positioning on the spherical surface, has a simple structure, is reusable, and has good economic benefits.

[0025] 2. This drilling fixture can ensure the positioning and alignment of ball head parts while stably clamping, ensuring processing accuracy, reducing the impact of human factors on drilling processing, and improving the yield rate.

[0026] 3. This drilling fixture is easy to use, has a streamlined process, and has high work efficiency. It proposes a new manufacturing idea for the same type of ball head parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 :Schematic diagram of ball head parts structure

[0028] Figure 2 : Schematic diagram of the positioning and drilling fixture for ball head parts;

[0029] Figure 3 : Schematic diagram of the drilling jig base structure;

[0030] In the figure: 1-flat ball head; 2-normal hole; 3-longitudinal hole; 4-ball head parts; 5-drilling jig base; 6-pressing plate; 7-fastening screw; 8-positioning groove; 9-threaded connection hole; 10-first limiting cavity; 11-second limiting cavity; 12-normal guide hole; 13-drilling guide surface; 14-longitudinal guide hole. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] One end of the ball head part is a flat ball head 1, and a vertical longitudinal hole 3 is provided in the center of the flat surface; the flat ball head 1 is evenly distributed along the circumference of the arc surface with five normal holes 2 and are all perpendicular to the longitudinal hole 3; the distances from the axis of the longitudinal hole 3 to the five normal holes 2 are equal.

[0033] like Figure 2 A ball head type parts positioning drilling fixture shown includes a drilling jig base 5, a pressing plate 6 and two fastening screws 7;

[0034] like Figure 3 As shown, the jig base 5 is a hexagonal prism, and the six sides of the jig base 5 are five drilling guide surfaces 13 for guiding drilling and a positioning surface for positioning the ball head-like parts 4; the axes of the five normal holes 2 are coplanar, and the plane is parallel to the positioning surface;

[0035] A square positioning groove 8 is provided inwardly along the vertical direction of the positioning surface at the upper end of the positioning surface; the shape of the pressing plate 6 matches the shape of the positioning groove 8;

[0036] The bottom surface of the pressing plate 6 and the bottom surface of the positioning groove 8 are respectively provided with a first limiting cavity 10 and a second limiting cavity 11 that can be combined, and the inner cavity profile of the two limiting cavities 10 after being combined matches the ball head-like part 4;

[0037] The pressing plate 6 is provided with a longitudinal guide hole 14, which is opposite to the longitudinal hole of the ball head part 4 and has the same size as the longitudinal hole, and is used for drilling with a drill;

[0038] The five drilling guide surfaces 13 are all provided with normal guide holes 12, which are respectively opposite to the five normal holes of the ball head parts 4 and have the same size, and are used for drilling holes by a drill bit to realize the positioning and alignment of the ball head parts;

[0039] The pressing plate 6 and the positioning groove 8 are both provided with two corresponding threaded mounting holes. The pressing plate 6 is fastened in the positioning groove 8 by two fastening screws 7 to prevent deviation caused by vibration and ensure drilling accuracy.

[0040] In order to ensure the clamping effect of the flat-nose pliers on the fixture, two chamfers are provided on the outer side of the pressing plate 6 to ensure that the outer side surface of the pressing plate 6 is flush with the outer side surface of the drilling template base 5.

[0041] In order to prevent the drilling machine from being blocked, the two threaded through holes of the pressing plate 6 are both countersunk holes, and the fastening screws 7 are both countersunk screws.

[0042] The process of using this fixture to position and drill ball head parts:

[0043] Step 1: Place the ball head part 4 in the second limiting cavity 11 of the positioning groove 8;

[0044] Step 2: Place the pressing plate 6 in the positioning groove 8 and ensure that the first limiting cavity 10 is completely fitted with the ball head-like component 4;

[0045] Step 3: Install the two fastening screws 7 into the two threaded mounting holes respectively, fix the pressing plate 6 in the positioning groove 8, and ensure that the pressing plate 6 presses the ball head part 4 tightly, so as to complete the clamping and fixing of the ball head part 4;

[0046] Step 4: Place a drilling guide surface 13 of the drilling jig base 5 horizontally on the drilling machine workbench, align a normal guide hole 12 with the drill bit, and tighten the drilling fixture with flat-nose pliers;

[0047] Step 5: Start the drilling machine, take the drilling guide surface 13 as a reference, drill along the normal guide hole 12, and complete the processing of the normal hole;

[0048] Step 6: Repeat steps 4 to 5 to complete the processing of five normal holes in sequence;

[0049] Step 7: Place the drilling jig flat on the workbench of the drill press, align the longitudinal guide hole 14 with the drill bit, and tighten the drilling jig with flat-nose pliers;

[0050] Step 8: Start the drilling machine and drill along the longitudinal guide hole 14 to complete the processing of the longitudinal hole.

[0051] The above description is only a specific implementation mode of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or substitutions within the technical scope disclosed in the present utility model, and these modifications or substitutions should be included in the protection scope of the present utility model.

Claims

1. A positioning and drilling fixture for ball head parts, characterized in that: Includes jig base and pressure plate; One end of the ball head part is an oblate ball head, and a vertical longitudinal hole is provided on the flat surface; the oblate ball head is provided with five normal holes evenly distributed along the circumference of the arc surface and are perpendicular to the longitudinal hole; The drilling template base is a hexagonal prism, and the six sides of the drilling template base include five drilling guide surfaces and one positioning surface; A positioning groove is provided on the upper end of the positioning surface inwardly along the vertical direction of the positioning surface; The shape of the pressing plate matches the shape of the positioning groove; the pressing plate is fastened in the positioning groove, and the outer side surface of the pressing plate is flush with the outer side surface of the drilling template base; The bottom surface of the pressure plate and the bottom surface of the positioning groove are provided with a limit cavity that can be combined, and the inner cavity profile of the two limit cavities after being combined matches the ball head parts; The pressing plate is provided with a longitudinal guide hole, which is opposite to the longitudinal hole of the ball head part and has the same size; The five drilling guide surfaces are all provided with normal guide holes, and the five normal guide holes are respectively opposite to the five normal holes of the ball head parts in position and have the same size.

2. A ball head parts positioning drilling fixture according to claim 1, characterized in that: The longitudinal hole is arranged at the center of the flat surface, and the distances between the axis of the longitudinal hole and the five normal holes are equal; the axes of the five normal holes are coplanar, and the plane is parallel to the positioning surface.

3. A ball head parts positioning drilling fixture according to claim 1 or 2, characterized in that: Also included are two fastening screws; The pressing plate and the positioning groove are provided with two corresponding threaded mounting holes, and the pressing plate is fixed in the positioning groove by two fastening screws.

4. A ball head parts positioning drilling fixture according to claim 3, characterized in that: The threaded mounting hole of the pressing plate is a countersunk hole.

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