Drill jig for machining side hole in outer circle

Abstract

The utility model discloses a drill jig for processing side holes on an outer circle, which comprises a base, a cover plate and a compensation block, a V-shaped groove is arranged in the middle of the base, two precision pins are respectively arranged at two ends of the base, two guide holes for a drill bit to penetrate through are arranged at the upper end of the cover plate, and the distance between the two guide holes is the same as the hole distance of a to-be-processed part to be drilled. A to-be-machined part is placed on a V-shaped groove in the middle of the base, one end of the compensation block is attached to the outer circle of the to-be-machined part, the other end of the compensation block is attached to the cover plate, and the cover plate covers the upper end of the compensation block. The threaded ends of the two precision pins penetrate through the two ends of the cover plate respectively, and nuts are screwed in to fix the cover plate and the base; the utility model has the beneficial effects that the use is simple, a large amount of time for correcting parts and replacing cutters can be reduced, and the processing efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of drilling jigs, and specifically relates to a drilling jig for processing outer circle upper side holes. Background Art

[0002] When a rotating part requires a U-shaped or side latch safety, side holes are generally machined symmetrically on either side of the outer circle's rotational center. These holes' centers do not point toward the center of the circle. When drilling directly, only one side of the drill bit contacts the part, leaving the other side unsupported. This causes the drill bit to easily bend and deform during machining, resulting in out-of-tolerance holes. Therefore, the current method for machining side holes on outer circles is mostly to use a boring machine with a small milling cutter for countersinking, followed by drilling and reaming. This operation is difficult, requires frequent tool changes, and results in extremely low machining efficiency.

[0003] Therefore, in order to improve the processing efficiency of the upper side holes of the outer circle, through in-depth research and analysis, repeated practice, and collective efforts, combined with the idea of ​​compensatory processing, a drilling jig for processing the upper side holes of the outer circle was invented, which effectively improved the processing efficiency. Utility Model Content

[0004] In view of the above-mentioned existing technology, the purpose of this utility model is to overcome the shortcomings of the existing technology and adapt to actual needs, thereby providing a drilling template for processing the upper side holes of the outer circle that can solve the problems of cumbersome operation and low processing efficiency of traditional means of processing the upper side holes of the outer circle.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a drilling jig for processing the upper side hole of the outer circle, comprising a base, a cover plate and a compensation block. A V-shaped groove is provided in the middle of the base, and a precision pin is provided at each end. The upper end of the cover plate is provided with two guide holes for the drill bit to pass through. The spacing between the two guide holes is the same as the hole spacing to be drilled on the part to be processed. The upper ends of the two precision pins are provided with threads that cooperate with nuts. The part to be processed is placed on the V-shaped groove in the middle of the base, one end of the compensation block is fitted with the outer circle of the part to be processed, and the other end is fitted with the cover plate. The cover plate covers the upper end of the compensation block, and the base passes through the two ends of the cover plate through the threaded ends of the two precision pins and screws into the nuts to fix the cover plate to the base.

[0006] Furthermore, the base is in the shape of a block, a V-shaped groove is provided in the middle of the block, and two precision pins are vertically provided at the front and rear ends of the block.

[0007] Furthermore, the middle part of the lower end of the cover plate is a square groove, the front and rear sides of the lower end are flat, and the front and rear sides of the upper end of the cover plate are respectively provided with a precision hole for the precision pin to pass through, and the cover plate is covered on the upper end of the compensation block through the square groove.

[0008] Furthermore, the spacing between the two precision holes is the same as the spacing between the two precision pins, and the outer diameters of the two precision pins match the apertures of the two precision holes.

[0009] Furthermore, the lower end of the compensation block is an arc surface, and the upper end is a square surface. The lower end of the compensation block fits with the outer circle of the part to be processed through the arc surface, and the upper end fits with the square groove of the cover plate through the square surface.

[0010] Furthermore, the arc-shaped surface at the lower end of the compensation block is a semicircular surface, and the center of the semicircular surface coincides with the center of the outer circle of the part to be processed.

[0011] Furthermore, it also includes springs. There are two springs, which are respectively mounted on the bottom of two precision pins on both ends of the base. The planes on the front and rear sides of the lower end of the cover are respectively in contact with the upper ends of the two springs, and both springs are in a compressed state.

[0012] After the compensation block is attached to the part and the part is calibrated and fixed on the drilling jig, drilling can be carried out through the guide hole on the cover plate.

[0013] The utility model is suitable for drilling holes on an outer circle, in particular for drilling side holes whose centers do not point to the center of the circle.

[0014] The beneficial effects of the utility model are as follows: the drilling jig is easy to use, can reduce a large amount of time for correcting parts and replacing cutting tools, and greatly improves processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the exploded structure of the present invention, the part to be processed and the drill bit (the thick solid line represents the hole to be processed);

[0016] Figure 2 This is a three-dimensional diagram of the utility model after installation with the parts to be processed;

[0017] Figure 3 for Figure 2 Main view after installing the drill bit;

[0018] Figure 4 for Figure 3 AA section enlarged view (the thick solid line is the hole processed by the drill bit);

[0019] Figure 5 Schematic diagram comparing the drilling jig processing of the present invention and the processing without the drilling jig (the right side is the drilling jig processing of the present invention).

[0020] Among them: 1 is a drill bit, 2 is a nut, 3 is a compensation block, 4 is a part to be processed, 5 is a cover plate, 6 is a spring, 7 is a base, 8 is a precision pin, 9 is a V-groove, 10 is a guide hole, 11 is a precision hole, 12 is a square groove, and 13 is an arc surface. DETAILED DESCRIPTION

[0021] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0022] In the description of the present application, it should be noted that the terms "center / portion", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying 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 element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0023] Furthermore, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "provided with," "covered with," etc., should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0024] It should also be understood that the terms "comprises / comprising," "consisting of," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product, apparatus, process, or method that includes a list of elements includes not only those elements but also, if necessary, other elements not explicitly listed, or elements inherent to such product, apparatus, process, or method. Without further limitation, an element defined by the phrase "comprises / comprising," "consisting of," does not preclude the presence of additional identical elements in the product, apparatus, process, or method that includes the element. Example

[0025] like Figures 1 to 5As shown, the utility model provides a drilling jig for machining the upper side hole of an outer circle, comprising a base 7, a cover plate 5, a spring 6 and a compensation block 3. The base 7 is in the shape of a square block, a V-shaped groove 9 is provided in the middle of the square block, and a precision pin 8 is provided at each end. The two precision pins 8 are both perpendicular to the top of the square block. The middle part of the lower end of the cover plate 5 is a square groove 12, the front and rear sides of the lower end are flat, the upper end of the cover plate 5 is flat, and the front and rear sides of the upper end of the cover plate 5 are respectively provided with a precision hole 11 for the precision pin 8 to pass through. The spacing between the two precision holes 11 is the same as the spacing between the two precision pins 8. The outer diameters of the two precision pins 8 match the apertures of the two precision holes 11. The cover plate 5 is covered on the square surface of the compensation block 3 through the square groove 12. Two guide holes 10 for the drill bit 1 to pass through are provided on the upper end of the cover plate 2. The spacing between the two guide holes 10 is the same as the hole spacing to be drilled on the part 4 to be processed. The upper ends of the pins 8 are provided with threads that cooperate with the nuts 2. The part 4 to be processed is placed on the V-groove 9 in the middle of the base 7. The lower end of the compensation block 3 is an arcuate surface 13, and the upper end is a square surface. The lower end of the compensation block 3 fits with the outer circle of the part 4 to be processed through the arcuate surface 13, and the upper end fits with the square groove 12 of the cover plate 5 through the square surface. The arcuate surface 13 at the lower end of the compensation block 3 is a semicircular surface, and the center of the semicircular surface coincides with the center of the outer circle of the part 4 to be processed. There are two springs 6, which are respectively mounted on the two precision pins 8 at both ends of the base 7. The bottoms of the two springs 6 are in contact with the square top of the base 7, and the upper ends of the two springs 6 are respectively in contact with the planes on the front and rear sides of the lower end of the cover plate 5, and the two springs 6 are in a compressed state. The base 7 passes through the precision holes 11 at both ends of the cover plate 5 through the threaded ends of the two precision pins 8 and screws into the nuts 2 to fix the cover plate 5 to the base 7.

[0026] Preferably, the vertical center line of the square groove 12 at the lower end of the cover plate 5, the vertical center line of the arcuate surface 13 at the lower end of the compensation block 3 and the vertical center line of the outer circle of the part to be processed 4 coincide with each other.

[0027] The main structure and working principle of this utility model are as follows: Figure 1 and Figure 2 :The drilling jig is mainly composed of a base 7, a compensation block 3, a cover plate 5, a spring 6 and other structures. Figure 1 and Figure 4 : There are two precision pins 8 on the base 7, and the two corresponding precision holes 11 on the cover plate 5 cooperate with them to ensure that the cover plate 5 will not tilt every time the parts are disassembled and assembled to ensure accurate positioning. In addition, the arc surface 13 of the compensation block 3 fits the outer circle of the part 4 to be processed, and the square surface fits the cover plate 5, so that the part 4 to be processed can be accurately positioned. Figure 4 : The spring 6 mainly plays the role of assisting disassembly and assembly. There is no need to remove the nut 2. You only need to loosen 1 to 2 circles of the spring 6 to lift the cover 5 accordingly. You can directly disassemble and assemble the part 4 to be processed, which is convenient to use.

[0028] The method of using this utility model is: Figure 1 , install the part to be processed 4 and the compensation block 3 on the drilling jig of the utility model, calibrate the part to be processed 4 and tighten the nut 2. Figure 4 Place the part to be machined 4 and the drilling jig of the present invention on the drilling press, start the drilling machine, adjust the drill bit 1 to drill downward along the guide hole 10 on the cover plate 5, and drill the compensation block 3 and the part to be machined 4 together to complete the drilling. After completing one hole, loosen the nut 2. When drilling the second part, pay attention to properly adjust the position of the compensation block 3. Use the undrilled position of the compensation block 3 to drill the second part. Continue until all holes are drilled on the compensation block 3 with no blank spaces. Then replace the compensation block 3 with a new one.

[0029] The points to note for this utility model are: the compensation block 3 in the drilling jig of this utility model is a consumable item. The number of parts that can be processed by one compensation block 3 is limited, so a certain number of compensation blocks 3 must be prepared accordingly. Figure 5 The biggest advantage of the drilling jig of the present invention is that the cylindrical surface to be processed is filled into a plane through the compensation block 3, which balances the cutting force of the drill bit 1 and ensures stable drilling operation. Therefore, the compensation block 3 should be made of the same material as the part as much as possible.

[0030] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A drilling jig for machining an outer circular upper side hole, characterized in that: It includes a base, a cover plate and a compensation block. A V-shaped groove is provided in the middle of the base, and a precision pin is provided at each end. Two guide holes for the drill bit to pass through are provided on the upper end of the cover plate. The spacing between the two guide holes is the same as the hole spacing to be drilled on the part to be processed. The upper ends of the two precision pins are provided with threads that cooperate with nuts. The part to be processed is placed on the V-shaped groove in the middle of the base. One end of the compensation block fits with the outer circle of the part to be processed, and the other end fits with the cover plate. The cover plate covers the upper end of the compensation block. The base passes through the two ends of the cover plate through the threaded ends of the two precision pins and screws in the nuts to fix the cover plate to the base.

2. The drilling jig for machining an outer circular upper side hole according to claim 1, characterized in that: The base is in the shape of a block, a V-shaped groove is arranged in the middle of the block, and two precision pins are arranged vertically at the front and rear ends of the block.

3. The drilling jig for machining an outer circular upper side hole according to claim 1, characterized in that: The middle part of the lower end of the cover is a square groove, the front and rear sides of the lower end are flat, and the front and rear sides of the upper end of the cover are respectively provided with a precision hole for the precision pin to pass through. The cover is covered on the upper end of the compensation block through the square groove.

4. The drilling jig for machining an outer circular upper side hole according to claim 3, characterized in that: The distance between the two precision holes is the same as the distance between the two precision pins, and the outer diameters of the two precision pins match the diameters of the two precision holes.

5. The drilling jig for machining an outer circular upper side hole according to claim 3, characterized in that: The lower end of the compensation block is an arc surface, and the upper end is a square surface. The lower end of the compensation block fits with the outer circle of the part to be processed through the arc surface, and the upper end fits with the square groove of the cover plate through the square surface.

6. The drilling jig for machining an outer circular upper side hole according to claim 5, characterized in that: The arc surface at the lower end of the compensation block is a semicircular surface, and the center of the semicircular surface coincides with the center of the outer circle of the part to be processed.

7. The drilling jig for machining an outer circular upper side hole according to claim 3, characterized in that: It also includes two springs, which are respectively mounted on the bottom of two precision pins on both ends of the base. The planes on the front and rear sides of the lower end of the cover are respectively in contact with the upper ends of the two springs, and both springs are in a compressed state.

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