Spatial double-inclined-hole multi-angle limiting device

Abstract

The invention discloses a space double-inclined-hole multi-angle limiting device in the technical field of drilling, which comprises a positioning base, a drill jig seat is fixed on the positioning base, a first included angle is formed between one inclined surface of the positioning base and the bottom surface of the drill jig seat, and a second included angle is formed between the other inclined surface of the positioning base and the bottom surface of the drill jig seat. A second included angle is formed between the other inclined face of the positioning base and the bottom face of the drill jig base, and the first included angle and the second included angle are different. A clamping space is formed between the positioning base and the drill jig base and used for clamping a workpiece to be machined. According to the positioning base, machining of inclined holes with various gradients can be completed through one-time clamping, the problem of the angle between the axis of the workpiece and a working table top when the workpiece to be machined with double inclined holes and multiple angles is machined is well solved, the number of drilling tools is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of drilling, in particular to a spatial double-inclined hole multi-angle limiting device. Background Art

[0002] The accessory transmission casing is the main supporting and force-bearing part of the engine. Many oil holes are drilled on the accessory transmission casing to form the lubricating oil channel inside the engine.

[0003] Some accessory transmission cases include multiple groups of inclined holes. The inclined holes in the same group have the same angle between the axis of the hole and the axis of the accessory transmission case and are distributed along the circumference of the axis of the workpiece to be processed. In the prior art, inclined holes with different inclinations require different drilling fixtures. The accessory transmission case with two groups of inclined holes at different angles as the workpiece to be processed often requires two sets of drilling and boring fixtures for clamping and positioning, and the bottom surface needs to be rotated multiple times to align the angle and then fix the part for drilling, which is troublesome to clamp and inefficient.

[0004] In summary, designing a drilling tool that is suitable for workpieces with double inclined holes and multiple angles is of great significance to the development of the drilling technology field. Summary of the invention

[0005] The purpose of the present invention is to provide a spatial double-inclined hole multi-angle limit device, which can solve the problems of troublesome inclined hole drilling, low efficiency, and multiple fixtures by directly flipping the positioning base after completing the inclined hole indexing processing in one direction through the shape of the positioning base.

[0006] The purpose of the present invention is mainly achieved through the following technical solutions:

[0007] A spatial double-inclined hole multi-angle limit device comprises a positioning base, a drilling jig seat is fixed on the positioning base, a first angle is formed between one inclined surface of the positioning base and the bottom surface of the drilling jig seat, a second angle is formed between another inclined surface of the positioning base and the bottom surface of the drilling jig seat, and there is a difference between the first angle and the second angle;

[0008] A clamping space is provided between the positioning base and the drilling jig seat, and the clamping space is used for clamping the workpiece to be processed.

[0009] The positioning base is used to position the workpiece to be processed. At the same time, an inclined surface is set on the base to meet the inclined installation requirements during inclined hole processing.

[0010] Drilling jig is used to guide the tool to drill holes in the workpiece.

[0011] The workpiece to be processed is fixed on the positioning base, and the drilling jig seat is fixed above the positioning base, so that the positioning base and the drilling jig seat form a clamping space for clamping the workpiece to be processed.

[0012] Because the workpiece to be processed has two sets of different inclined holes, the positioning bases in the prior art are mostly right-angle triangles with unique angles, which cannot adapt to the workpiece to be processed. Using two sets of clamps for clamping and positioning requires more operating steps and more time to complete the clamping. This not only increases the labor intensity of the workers, but also prolongs the processing cycle.

[0013] The positioning base of the present invention has at least two inclined surfaces which form two different angles with the bottom surface of the drilling jig seat respectively, and the angles correspond to the angle settings of the inclined holes on the workpiece to be processed. Compared with the prior art, the positioning base of the present invention can adapt to the processing of a variety of different inclined holes.

[0014] By turning over the positioning base and making different inclined surfaces contact the workbench plane, different inclined holes can be processed. The device has a simple structure and is easy to operate. It can also reduce the number of fixtures and drilling tools, reduce the time consumption of the clamping and positioning process, and speed up the drilling rate.

[0015] Furthermore, the positioning base includes a first plate, a second plate and a third plate, and the first plate, the second plate and the third plate are spliced ​​in pairs and enclosed to form a triangle;

[0016] The jig seat is located on the first flat plate, the first angle is the angle between the second flat plate and the bottom surface of the jig seat, and the second angle is the angle between the third flat plate and the bottom surface of the jig seat.

[0017] The polygonal positioning base may have multiple different angles, making the device suitable for multiple sets of inclined holes. However, the triangular positioning base in this scheme is more stable than the polygonal structure, and the drilling impact force is not likely to cause the positioning base to tilt, thereby ensuring drilling efficiency and quality.

[0018] The positioning base of the triangle is formed by assembling three plates, namely, the first plate, the second plate and the third plate, in pairs. During use, the jig seat is installed on the first plate, with the axis of the workpiece to be processed on the first plate. At this time, a first angle is formed between the second plate and the bottom surface of the jig seat, and a second angle is formed between the third plate and the bottom surface of the jig seat. When in use, the first angle formed by the second plate of the positioning base and the bottom surface of the workpiece to be processed is the same as the angle between one group of inclined holes of the workpiece to be processed and the axis of the workpiece to be processed. At this time, the second plate is fitted with the worktable, and the angle between the bottom surface of the workpiece to be processed on the first plate and the worktable is the size of the first angle. The axis of the workpiece to be processed is perpendicular to the first plate. Since the angle between the axis of the inclined hole of this group and the axis of the workpiece to be processed is also the size of the first angle, the axis of one of the inclined holes of this group is perpendicular to the second plate, that is, perpendicular to the worktable, which is convenient for drilling the inclined hole on the workpiece to be processed. When another group of inclined holes needs to be processed, the positioning base is flipped over to make the third plate fit against the worktable. At this time, the angle between the bottom surface of the workpiece to be processed and the third plate is the second angle. Since the angle between the axis of the inclined holes of the other group of inclined holes and the axis of the workpiece to be processed is the same as the second angle, the axis of the holes in the other group of inclined holes is also perpendicular to the worktable.

[0019] Furthermore, it also includes a turntable assembly, the turntable assembly is rotatably connected to the upper surface of the positioning base, the turntable assembly is located in the clamping space and can carry the workpiece to be processed to rotate;

[0020] The jig seat is provided with a pull rod, which passes through the jig seat and extends along its own axis and is inserted into the rotary disk assembly;

[0021] The first flat plate is provided with a positioning pin, and the positioning pin is fixedly connected to the turntable assembly.

[0022] The rotary table assembly can rotate at multiple angles, which allows drilling to be performed at different angles and directions.

[0023] Because a group of inclined holes may include multiple inclined holes at different positions, the present invention sets a turntable assembly on the positioning base, so that the turntable assembly rotates around the positioning base and carries the workpiece to be processed to rotate, thereby realizing the functions of inclined hole indexing and positioning.

[0024] The pull rod is passed through the top of the jig base and positioned on the rotary disk assembly, which can quickly install and position the jig base, the rotary disk assembly and the workpiece to be processed on the rotary disk assembly, thereby improving the installation efficiency. The pull rod is used as a positioning part and a connecting part, with a simple structure and easy operation.

[0025] The positioning base and the turntable assembly are fixedly connected by the positioning pins. When the workpiece to be processed is rotated to the position of another inclined hole for processing, the turntable assembly is fixed by the positioning pins to prevent the workpiece to be processed from rotating during processing, which will cause the drilling position or the inclined hole angle to change, resulting in poor angular positioning of the inclined hole and drilling accuracy.

[0026] Manually rotating and adjusting the bottom surface to find the correct angle is easily affected by human factors, such as the worker's technical level, experience, and attention during operation, which leads to inaccurate angle positioning. The present invention uses a rotary disk assembly and a positioning pin to achieve indexing and positioning of the inclined hole, thereby improving the accuracy of the inclined hole angle positioning.

[0027] Furthermore, the rotary disc assembly includes a deep groove bearing and a positioning disc, and the deep groove bearing is fixedly connected to the positioning disc and is press-fitted into the first flat plate;

[0028] The positioning disc is arranged on the first flat plate and fits with the first flat plate. The first flat plate is provided with a T-shaped ring groove, a process hole is provided on the T-shaped ring groove, a plurality of T-shaped bolts are provided in the T-shaped ring groove, the diameter of the process hole is the same as the diameter of the head of the T-shaped bolt, and the tail of the T-shaped bolt passes through the positioning disc upward and is connected with a nut;

[0029] A plurality of positioning pin holes are arranged above the positioning disc, and the positioning pin passes through one of the positioning pin holes and is fixedly connected to the first flat plate.

[0030] An annular T-shaped groove is provided on the upper surface of the first flat plate of the positioning base, and a process hole is provided on the circumference of the annular T-shaped groove so that the T-shaped bolt can be placed in the T-shaped groove;

[0031] The positioning disc is provided with a plurality of positioning pin holes, so that the positioning pins can be connected with different positioning pin holes, so that the device can be quickly transferred from one inclined hole to another inclined hole for processing.

[0032] The specific assembly method of the rotary disk assembly and the positioning base is: first put the T-bolt into the annular groove through the process hole at the annular groove of the first plate of the positioning base, then install the deep groove bearing into the bearing mounting hole in the middle of the positioning base, and at the same time let the T-bolt screw part pass through the positioning disc and lock it. When working, first loosen the nut, let the rotary disk assembly rotate around the positioning base, insert the positioning pin into the positioning disc and the positioning base, and then lock it with the nut to achieve the indexing rotation and tightening of the rotary disk assembly.

[0033] Furthermore, a positioning core shaft is provided in the middle of the positioning disc, and the positioning core shaft is cylindrical and includes a first end, a second end and a third end from top to bottom;

[0034] The bottom of the first end is fixedly connected to the top of the positioning disc, the second end extends into the positioning disc, the second end is interference fit with the positioning disc, the third end is pressed into the deep groove bearing and the third end is interference fit with the deep groove bearing.

[0035] A positioning mandrel is arranged in the middle of the positioning disc, and a pull rod is passed through the positioning mandrel for preliminary positioning.

[0036] The positioning mandrel includes a first end, a second end and a third end from top to bottom, and the outer diameters of the first end, the second end and the third end are different. The bottom of the first end is fixedly connected to the top of the positioning disc; the outer diameter of the second end is consistent with the diameter of the central through hole of the positioning disc, and the middle outer circle is inserted into the central through hole of the positioning disc by interference fit; the outer diameter of the third end is consistent with the inner diameter of the deep groove bearing, and the outer circle of the third end is inserted into the deep groove bearing by interference fit. The workpiece to be processed is fixed in the horizontal direction, so that the rotation resistance of the rotary disk assembly relative to the positioning base is small, the rotation is stable, and the indexing is accurate, thereby enhancing the positioning accuracy of different inclined holes in the same group.

[0037] Different inclined holes whose axes have the same angle with the axis of the workpiece to be processed and are distributed along the circumference of the axis of the workpiece to be processed are grouped together. When processing inclined holes at different positions in the same group, the rotation of the deep groove bearing drives the positioning core shaft that is interference fit with the deep groove bearing to rotate, thereby driving the positioning disk fixedly connected to the first end of the positioning core shaft to rotate, so that the workpiece to be processed fixed on the positioning disk by the positioning pin is rotated to another inclined hole in the same group.

[0038] Furthermore, a zero scale line is provided on the positioning disc, and the zero scale line is used to position the workpiece to be processed.

[0039] A zero scale line is set on the positioning disc as a positioning reference, and the zero scale line is used to quickly locate the relative position of the workpiece to be processed and the positioning disc, thereby quickly locating the position of the inclined hole, which can improve the drilling efficiency.

[0040] Furthermore, the jig base can completely cover the clamping space, and the jig base is provided with a plurality of groups of inclined hole positioning holes, and the inclined hole positioning holes penetrate from the upper surface of the jig base to the lower surface of the jig base.

[0041] The drilling jig seat can completely cover the clamping space and the workpiece to be processed inside the clamping space. An inclined hole positioning hole is arranged on the drilling jig seat, and the position of the inclined hole to be processed can be quickly determined by the position of the inclined hole positioning hole, thereby improving the drilling efficiency.

[0042] Furthermore, a drill sleeve is provided in the inclined hole positioning hole.

[0043] Specifically, a drill sleeve is arranged in each inclined hole positioning hole to determine the position of the drill axis, guide the drill to process the inclined hole, and further improve the drilling accuracy.

[0044] Furthermore, both ends of the upper surface of the drilling jig seat are provided with semi-waist-shaped grooves, and a zero-position mark is engraved at the arc of one of the semi-waist-shaped grooves, and the zero-position mark is used to quickly locate the workpiece to be processed.

[0045] Set the zero mark on the drilling jig seat, quickly align and position the workpiece to be processed, and make the inclined hole positioning hole correspond to the inclined hole. It is used to quickly align the inclined hole positioning hole with the inclined hole of the workpiece to be processed, speed up efficiency and increase drilling accuracy.

[0046] In summary, the present invention has the following beneficial effects compared with the prior art:

[0047] 1. The positioning base of the present invention can complete the processing of inclined holes with various inclinations through one clamping, which better solves the problem of the angle between the axis and the work surface when processing the double inclined holes of the workpiece to be processed, saves the number of drilling tools, and reduces the production cost;

[0048] 2. The use of the rotary disc assembly and the positioning pin can better solve the problem of angular positioning of the inclined hole, and the angle positioning accuracy is high;

[0049] 3. The use of the pull rod effectively solves the problem of rapid positioning and installation of the workpiece to be processed;

[0050] 4. The use of drill jigs and drill sleeves not only improves the drilling efficiency, but also improves the accuracy of inclined hole drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0052] Figure 1 A top view of the overall structure of this application;

[0053] Figure 2 For this application Figure 1 AA cross-sectional view;

[0054] Figure 3 For this application Figure 1 A cross-sectional view along the BB direction;

[0055] Figure 4 A top view of the base for positioning this application;

[0056] Figure 5 For this application Figure 4 AA section view;

[0057] Figure 6A top view of the turntable assembly of this application;

[0058] Figure 7 For this application Figure 6 and its AA section view;

[0059] Figure 8 A top view of the drilling jig base of this application;

[0060] Fig. 9 For this application Figure 8 AA section view;

[0061] The names corresponding to the accompanying drawings are: 1. Positioning base; 101. First plate; 102. Second plate; 103. Third plate; 2. Turntable assembly; 201. Positioning disc; 202. Positioning spindle; 203. Deep groove bearing; 204. Positioning pin; 3. Drilling jig seat; 4. Pull rod; 501. T-bolt; 502. Bolt; 503. Anti-rotation locking screw; 6. Drill sleeve; 601. Fixed drill sleeve; 602. Replaceable drill sleeve; 7. Zero position mark. DETAILED DESCRIPTION

[0062] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0063] Example:

[0064] like Figure 1-Figure 9 As shown, this embodiment relates to a spatial double-inclined hole multi-angle limit device in the field of drilling technology, comprising a positioning base 1, on which a drilling jig seat 3 is fixed, a first angle is formed between one of the inclined surfaces of the positioning base 1 and the bottom surface of the drilling jig seat 3, a second angle is formed between another inclined surface of the positioning base 1 and the bottom surface of the drilling jig seat 3, and there is a difference between the first angle and the second angle;

[0065] A clamping space is provided between the positioning base 1 and the jig base 3, and the clamping space is used for clamping the workpiece to be processed.

[0066] The positioning base 1 is used for positioning the workpiece to be processed, and at the same time, an inclined surface is provided on the base to meet the inclined installation requirement during the inclined hole processing.

[0067] The drilling jig seat 3 is used to guide the tool to drill holes on the workpiece.

[0068] The workpiece to be processed is fixed on the positioning base 1, and the jig seat 3 is fixed above the positioning base 1, so that the positioning base 1 and the jig seat 3 form a clamping space for positioning and clamping the workpiece to be processed.

[0069] Since the workpiece to be processed has two sets of different inclined holes, the positioning base 1 in the prior art is mostly a right-angle triangle with a unique angle, which cannot adapt to the workpiece to be processed. Using two sets of clamps for clamping and positioning requires more operation steps and more time to complete the clamping. This not only increases the labor intensity of the workers, but also prolongs the processing cycle.

[0070] The positioning base 1 of the present invention has at least two inclined surfaces which form two different angles with the bottom surface of the drilling jig seat 3, and the angles correspond to the angle settings of the inclined holes on the workpiece to be processed. Compared with the prior art, the positioning base 1 of the present invention can adapt to the processing of a variety of different inclined holes.

[0071] By turning over the positioning base 1, different inclined surfaces can contact the workbench plane, and different inclined holes can be processed. The device has a simple structure and is easy to operate. It can also reduce the number of fixtures and drilling tools, reduce the time consumption of the clamping and positioning process, and speed up the drilling rate.

[0072] As an implementable embodiment of the above scheme, the clamping space can directly clamp and position the workpiece to be processed, or other positioning structures can be set inside the clamping space to fix and clamp the workpiece to be processed, limit the workpiece to be processed, and prevent the workpiece to be processed.

[0073] Furthermore, the positioning base 1 includes a first plate 101, a second plate 102 and a third plate 103, and the first plate 101, the second plate 102 and the third plate 103 are spliced ​​in pairs and enclosed to form a triangle;

[0074] The jig base 3 is located on the first flat plate 101 , the first angle is the angle between the second flat plate 102 and the bottom surface of the jig base 3 , and the second angle is the angle between the third flat plate 103 and the bottom surface of the jig base 3 .

[0075] The polygonal positioning base 1 may have multiple different angles, so that the device can be applied to multiple groups of inclined holes. However, the triangular positioning base 1 used in this solution is more stable than the polygonal structure, and the drilling impact force is not easy to cause the positioning base 1 to deflect, thereby ensuring the drilling efficiency and quality.

[0076] The triangular positioning base 1 is formed by assembling two by two of three plates, namely, the first plate 101, the second plate 102 and the third plate 103. During use, the jig seat 3 is mounted on the first plate 101, and the axis of the workpiece to be processed is aligned with the first plate 101. At this time, the second plate 102 forms a first angle with the bottom surface of the jig seat 3, and the third plate 103 forms a second angle with the bottom surface of the jig seat 3. When in use, the first angle formed by the second plate 102 of the positioning base 1 and the bottom surface of the workpiece to be processed is the same as the angle between one group of inclined holes of the workpiece to be processed and the axis of the workpiece to be processed. At this time, the second plate 102 is fitted with the worktable, and the angle between the bottom surface of the workpiece to be processed on the first plate 101 and the worktable is the size of the first angle. The axis of the workpiece to be processed is perpendicular to the first plate 101. Since the angle between the axis of the inclined holes of this group and the axis of the workpiece to be processed is also the size of the first angle, the axis of one of the inclined holes in this group is perpendicular to the second plate 102, that is, perpendicular to the worktable, which is convenient for drilling the inclined holes on the workpiece to be processed. When another group of inclined holes needs to be processed, the positioning base 1 is flipped over to fit the third plate 103 with the worktable. At this time, the angle between the bottom surface of the workpiece to be processed and the third plate 103 is the second angle. Since the angle between the axis of the inclined holes of another group of inclined holes and the axis of the workpiece to be processed is the size of the second angle, the axis of the holes in the other group of inclined holes is also perpendicular to the worktable.

[0077] Furthermore, it also includes a turntable assembly 2, the turntable assembly 2 is rotatably connected to the upper surface of the positioning base 1, the turntable assembly 2 is located in the clamping space and can carry the workpiece to be processed to rotate;

[0078] The jig base 3 is provided with a pull rod 4, which passes through the jig base 3 and extends along its own axis and is inserted into the rotary disk assembly 2;

[0079] The first flat plate 101 is provided with a positioning pin 204 , and the positioning pin 204 is fixedly connected to the turntable assembly 2 .

[0080] The rotary disc assembly 2 can rotate at multiple angles, which enables the drilling process to be performed at different angles and directions.

[0081] Because a group of inclined holes may include multiple inclined holes at different positions, the present invention sets the turntable assembly 2 on the positioning base 1, so that the turntable assembly 2 rotates around the positioning base 1 and carries the workpiece to be processed to rotate, thereby realizing the functions of inclined hole indexing and positioning.

[0082] The pull rod 4 is used to penetrate downward from the top of the jig base 3 and position the rotary disk assembly 2, so that the jig base 3, the rotary disk assembly 2 and the workpiece to be processed on the rotary disk assembly 2 can be quickly installed and positioned, thereby improving the installation efficiency. The pull rod 4 is used as a positioning member and a connecting member, and has a simple structure and is easy to operate.

[0083] The positioning base 1 and the turntable assembly 2 are fixedly connected by the positioning pin 204. When the workpiece is rotated to the position of another inclined hole for processing, the turntable assembly 2 is fixed by the positioning pin 204 to prevent the workpiece from rotating during processing, which causes the drilling position or the inclined hole angle to change, resulting in poor angular positioning of the inclined hole and drilling accuracy.

[0084] Manually rotating and adjusting the bottom surface to find the correct angle is easily affected by human factors, such as the worker's technical level, experience, and attention during operation, which leads to inaccurate angle positioning. The present invention uses the rotary disk assembly 2 and the positioning pin 204 to achieve indexing and positioning of the inclined hole, thereby improving the accuracy of the inclined hole angle positioning.

[0085] Furthermore, the rotary disk assembly 2 includes a deep groove bearing 203 and a positioning disk 201, and the deep groove bearing 203 is fixedly connected to the positioning disk 201 and is press-fitted into the first flat plate 101;

[0086] The positioning disc 201 is arranged on the first flat plate 101 and fits with the first flat plate 101. The first flat plate 101 is provided with a T-shaped ring groove, and a process hole is provided on the T-shaped ring groove. A plurality of T-shaped bolts 501 are provided in the T-shaped ring groove. The diameter of the process hole is the same as the diameter of the head of the T-shaped bolt 501. The tail of the T-shaped bolt 501 passes through the positioning disc 201 upward and is connected with a nut.

[0087] A plurality of positioning pin holes are disposed above the positioning disc 201 , and the positioning pin 204 passes through one of the positioning pin holes and is fixedly connected to the first flat plate 101 .

[0088] An annular T-shaped groove is provided on the upper surface of the first plate 101 of the positioning base 1, and a process hole is provided on the circumference of the annular T-shaped groove so that the T-shaped bolt 501 can be placed in the T-shaped groove;

[0089] The positioning disc 201 is provided with a plurality of positioning pin holes, so that the positioning pin 204 can be connected to different positioning pin holes, so that the device can be quickly transferred from one inclined hole to another inclined hole for processing.

[0090] The specific assembly method of the rotating disk assembly 2 and the positioning base 1 is: first, insert the T-bolt 501 into the annular groove through the process hole at the annular groove of the first plate 101 of the positioning base 1, then install the deep groove bearing 203 into the bearing installation hole in the middle of the positioning base 1, and at the same time let the screw part of the T-bolt 501 pass through the positioning disc 201 and lock it. When working, first loosen the nut, let the rotating disk assembly 2 rotate around the positioning base 1, insert the positioning pin 204 into the positioning disc 201 and the positioning base 1, and then lock it with the nut to achieve the indexing rotation and tightening of the rotating disk assembly 2.

[0091] Furthermore, a positioning core shaft 202 is provided in the middle of the positioning disc 201, and the positioning core shaft 202 is cylindrical and includes a first end, a second end and a third end from top to bottom;

[0092] The bottom of the first end is fixedly connected to the top of the positioning disc 201, the second end extends into the positioning disc 201, the second end is interference fit with the positioning disc 201, the third end is pressed into the deep groove bearing 203 and the third end is interference fit with the deep groove bearing 203.

[0093] A positioning mandrel 202 is arranged in the middle of the positioning disc 201 , and a pull rod 4 is passed through the positioning mandrel 202 for preliminary positioning.

[0094] The positioning mandrel 202 includes a first end, a second end and a third end from top to bottom, and the outer diameters of the first end, the second end and the third end are different. The bottom of the first end is fixedly connected to the top of the positioning disc 201; the outer diameter of the second end is consistent with the diameter of the central through hole of the positioning disc 201, and the middle outer circle is inserted into the central through hole of the positioning disc 201 by interference fit; the outer diameter of the third end is consistent with the inner diameter of the deep groove bearing 203, and the outer circle of the third end is inserted into the deep groove bearing 203 by interference fit. The workpiece to be processed is fixed in the horizontal direction, so that the rotation resistance of the turntable assembly 2 relative to the positioning base 1 is small, the rotation is stable, and the indexing is accurate, thereby enhancing the positioning accuracy of different inclined holes in the same group.

[0095] Different inclined holes whose axes have the same angle with the axis of the workpiece to be processed and are distributed circumferentially along the axis of the workpiece to be processed are grouped together. When processing inclined holes at different positions in the same group, the rotation of the deep groove bearing 203 drives the positioning core shaft 202 that is interference fit with the deep groove bearing 203 to rotate, thereby driving the positioning disk 201 fixedly connected to the first end of the positioning core shaft 202 to rotate, so that the workpiece to be processed fixed on the positioning disk 201 by the positioning pin 204 is rotated to another inclined hole in the same group.

[0096] As a feasible implementation scheme of the above scheme, the lower end of the positioning mandrel 202 is pressed into the deep groove bearing 203, and the upper end face of the positioning mandrel 202 is fixed to the positioning disc 201 by bolts 502, so that the deep groove bearing 203 rotates to drive the positioning mandrel 202 and the positioning disc 201 to rotate, thereby rotating the workpiece to be processed and the drill jig seat 3, thereby enhancing the accuracy of the inclined hole indexing and positioning.

[0097] Furthermore, a zero scale line is provided on the positioning disc 201, and the zero scale line is used to position the workpiece to be processed.

[0098] A zero scale line is set on the positioning disc 201 as a positioning reference, and the zero scale line is used to quickly locate the relative position of the workpiece to be processed and the positioning disc 201, thereby quickly locating the position of the inclined hole, which can improve the drilling efficiency.

[0099] Furthermore, the jig base 3 can completely cover the clamping space, and a plurality of groups of inclined hole positioning holes are provided on the jig base 3 , and the inclined hole positioning holes penetrate from the upper surface of the jig base 3 to the lower surface of the jig base 3 .

[0100] The jig seat 3 can completely cover the clamping space and the workpiece to be processed inside the clamping space. An inclined hole positioning hole is set on the jig seat 3, and the position of the inclined hole to be processed can be quickly determined by the position of the inclined hole positioning hole, thereby improving the drilling efficiency.

[0101] As a feasible implementation method of the above scheme, the axis of the inclined hole positioning hole is made to coincide with the axis of the inclined hole at the corresponding position, and the inclined hole positioning hole is used for guidance to enhance the drilling accuracy.

[0102] Furthermore, a drill sleeve 6 is provided in the inclined hole positioning hole.

[0103] Specifically, a drill sleeve 6 is arranged in each inclined hole positioning hole to determine the position of the drill axis, guide the drill to process the inclined hole, and further improve the drilling accuracy.

[0104] Furthermore, both ends of the upper surface of the drilling jig seat 3 are provided with semi-waist-shaped grooves, and a zero-position mark 7 is engraved at the arc of one of the semi-waist-shaped grooves, and the zero-position mark 7 is used to quickly locate the workpiece to be processed.

[0105] A zero position engraved line 7 is set on the drilling jig seat 3, and after quickly aligning and positioning the workpiece to be processed, the inclined hole positioning hole and the inclined hole are aligned. It is used to quickly align the inclined hole positioning hole with the inclined hole of the workpiece to be processed, speed up efficiency, and increase drilling accuracy.

[0106] In this embodiment, an accessory transmission case is used as a workpiece to be processed, and has two sets of inclined holes, one set The inclined hole is on the outer wall of the inner cone of the accessory transmission casing. The angle between the center line of the hole and the axis of the accessory transmission case is 67°±2′3. There are reference lines above and below the workpiece to be processed. The two reference lines overlap longitudinally. The positioning disc 201 has a first oblique hole to be processed in the counterclockwise direction of 180+α from the reference line. A second oblique hole is opened in the counterclockwise direction of β from the first oblique hole. A third oblique hole is opened in the counterclockwise direction of γ from the second oblique hole. Another set Department, The inclined holes are on the inner wall of the inner cone of the accessory transmission casing. The angle between the axis of the inclined hole of the workpiece to be processed and the axis of the workpiece to be processed is 24°40′±2′3. The distribution between the three inclined holes is the same as that of the first group.

[0107] For the above-mentioned accessory transmission casing, the present invention comprises a positioning base 1, a rotary disc assembly 2, a bolt 502, a positioning pin 204, a T-bolt 501, a drilling jig seat 3, a fixed drill sleeve 601, a replaceable drill sleeve 602, a pull rod 4 and an anti-rotation locking screw 503;

[0108] The positioning base 1 is an acute-angled triangular space structure, which is welded by three rectangular plates, including a first plate 101, a second plate 102, and a third plate 103. The angle between the first plate 101 and the second plate 102 is 24°40′, the angle between the first plate 101 and the third plate 103 is 67°, and the angle between the second plate 102 and the third plate 103 is 88°20′. When in use, the first plate 101 of the positioning base 1 is used as a mounting base surface for the indexing device and part clamping, and the second plate 102 and the third plate 103 are used as mounting base surfaces on the machine tool workbench to meet the indexing of the two sets of double inclined holes on the accessory transmission casing and the vertical workbench of the inclined hole axis;

[0109] The rotary disk assembly 2 includes a deep groove bearing 203, a positioning disc 201, and a positioning mandrel 202; the deep groove bearing 203 is pressed into the first plate 101 of the positioning base 1; the positioning disc 201 is arranged on the first plate 101 of the positioning base 1 and fixed by a T-shaped bolt 501; the lower end of the positioning mandrel 202 is pressed into the deep groove bearing 203, and the upper end surface of the positioning mandrel 202 is fixed to the positioning disk 201 by a bolt 502; a latch positioning hole is opened in the first plate 101 of the positioning base 1 in the counterclockwise α direction, and a positioning latch 204 is inserted into the latch positioning hole, and the rotary disk assembly 2 is positioned at three angles on the first plate 101 of the positioning base 1 by the positioning latch 204;

[0110] The upper surface of the first plate 101 of the positioning base 1 is provided with an annular T-shaped groove, and a process hole is provided on the circumference of the annular T-shaped groove for placing the T-shaped bolt 501 into the T-shaped groove;

[0111] The first plate 101 of the positioning base 1 is provided with a latch positioning hole in the counterclockwise α direction, and a scale line is engraved in the counterclockwise 180° direction. A second latch positioning hole is provided in the counterclockwise β direction from the first latch positioning hole, and a third latch positioning hole is provided in the counterclockwise γ direction from the second latch positioning hole.

[0112] The drilling jig seat 3 is composed of an inner mold and an outer mold. The inner mold is designed according to the inner cone inner mold surface of the oblique hole end of the workpiece to be processed and is used for horizontal positioning of the part. Three oblique hole positioning holes are opened on the inner mold corresponding to the positions of the inner oblique holes. The angle between the first oblique hole positioning hole and the second oblique hole positioning hole in the counterclockwise direction is β, and the angle between the second oblique hole positioning hole and the third oblique hole positioning hole is γ. The three oblique hole positioning holes are used for positioning the replaceable drill sleeve 602 for processing the inner oblique hole.

[0113] The outer shape is designed according to the inner cone outer shape of the oblique hole end of the workpiece to be processed, and is used for horizontal positioning of the part. Three oblique hole positioning holes are opened at the positions of the outer shape corresponding to the outer oblique hole. The angle between the first oblique hole positioning hole and the second oblique hole positioning hole in the counterclockwise direction is β, and the angle between the second oblique hole positioning hole and the third oblique hole positioning hole is γ. The three oblique hole positioning holes are used to position and fix the drill sleeve 601 when processing the outer oblique hole;

[0114] The two ends of the upper surface of the jig seat 3 are provided with two half-waist-shaped grooves, and the arc of the left half-waist-shaped groove is engraved with a zero position engraved line 7 to facilitate alignment with the reference line of the workpiece to be processed;

[0115] The fixed drill sleeve 601 is inserted into the three inclined hole positioning holes on the outer surface of the drilling jig seat 3 to determine the position of the drill axis, guide the drill to process the inclined hole, and improve the drilling accuracy;

[0116] When the inner profile of the drilling jig seat 3 is located at the inclined hole position, a set of replaceable drill sleeves 602 with the same outer diameter and inner diameter suitable for the inclined hole size are inserted into the three inclined hole positioning holes and locked with anti-rotation locking screws 503 to determine the position of the drill bit axis, guide the drill bit to process the inclined hole, and improve the drilling accuracy;

[0117] The pull rod 4 is passed through the center of the jig base 3 to the turntable assembly 2 , and the parts are fixed between the jig base 3 and the turntable assembly 2 through the pull rod 4 .

[0118] In this embodiment, the processing sequence of the inner inclined hole on the accessory transmission casing is as follows:

[0119] The second plate 102 of the positioning base 1 is fixed on the work surface of the radial drilling machine as a reference, and the rotary disk assembly 2 is installed on the positioning base 1 according to the above-mentioned assembly method of the rotary disk assembly 2 and the positioning base 1. Then, the inner hole at the lower end of the accessory transmission casing is installed on the positioning mandrel 202 in the middle of the rotary disk assembly 2, and then the interior of the drilling jig seat 3 is installed in the inner hole at the upper part of the accessory transmission casing, and pre-connected with the pull rod 4. Then, the zero position line of the lower end surface of the accessory transmission casing is aligned with the zero scale line on the side of the positioning disk 201, and the zero position line at the upper end of the accessory transmission casing is aligned with the zero position scale line at the arc groove of the drilling jig seat 3. Finally, the pull rod 4 fastens the drilling jig seat 3 and the accessory transmission casing on the positioning disk 201, and starts drilling the inner cavity inclined hole. First, install the replaceable drill sleeve 602 and lock it with the anti-rotation locking screw 503 to drill the small hole in the inclined hole; then, replace the replaceable drill sleeve 602 and lock it to drill the large hole in the inclined hole.

[0120] After the first inclined hole is processed, the nut of the T-bolt 501 is loosened and the positioning pin 204 is pulled out. Then the jig seat 3, the positioning disc 201, the positioning mandrel 202, the T-bolt 501 and the accessory transmission casing are rotated clockwise by β on the upper surface of the positioning base 1 around the deep groove bearing 203. When the second inclined hole is processed, the positioning pin 204 is inserted, the rotary plate assembly 2 is locked, and the second inclined hole is processed according to the above-mentioned method of replacing the replaceable drill sleeve 602. According to the above-mentioned method, the third inclined hole is processed by rotating γ clockwise and replacing the replaceable drill sleeve 602.

[0121] The processing sequence of the outer inclined hole on the accessory transmission casing is as follows: after the processing of the inner inclined hole is completed, the fixture is turned over, and the third plate 103 of the positioning base 1 is used as a reference to fix it on the work surface of the radial drilling machine to start processing the outer inclined hole. First, install the fixed drill sleeve 601 at the position of the third outer inclined hole, and then drill the outer inclined hole. After processing the third outer inclined hole, loosen the nut of the T-bolt 501, and pull out the positioning pin 204. Then, the drill jig seat 3, the positioning disc 201, the positioning mandrel 202, the T-bolt 501 and the accessory transmission casing as a whole rotate counterclockwise around the deep groove bearing 203 on the upper surface of the positioning base 1 by γ. When it rotates to the second outer inclined hole processing position, insert the positioning pin 204, lock the turntable assembly 2, and process the second outer inclined hole according to the aforementioned method of replacing the fixed drill sleeve 601. According to the aforementioned method, the first outer inclined hole is processed by rotating β counterclockwise and replacing the fixed drill sleeve 601.

[0122] The principle of the present invention is as follows: two grooves are opened above the jig seat 3, and a zero position mark is engraved on the arc surface of the left groove. Before fixing the accessory transmission casing, the zero position mark 7 on the jig seat 3 is aligned with the zero position line on the accessory transmission casing; the jig seat 3 and the accessory transmission casing are fixed to the turntable assembly 2 using the pull rod 4; a circular T-shaped groove is opened on the first flat plate 101 of the triangular positioning base 1, and a positioning hole is made. During indexing rotation, the T-shaped bolt 501 rotates with the turntable assembly 2 in the circular T-shaped groove. When rotated into place, the positioning pin 204 is inserted into the positioning hole of the turntable assembly 2 and the positioning hole on the triangular positioning base 1 to achieve inclined hole indexing positioning; then, the three T-shaped bolts 501 are locked to fix the turntable assembly 2 on the triangular positioning base 1, and the angle between the mounting base surface of the positioning base 1 and the first flat plate 101 satisfies that the axis of the inclined hole is perpendicular to the mounting base surface. After processing several inclined holes in one direction, flip the triangular base so that the axis of the inclined hole in another direction is perpendicular to the mounting base surface, and process the inclined hole in another direction.

[0123] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A spatial double-oblique hole multi-angle limit device, characterized in that: The invention comprises a positioning base (1), a drilling jig base (3) is fixed on the positioning base (1), a first angle is formed between one of the inclined surfaces of the positioning base (1) and the bottom surface of the drilling jig base (3), a second angle is formed between another inclined surface of the positioning base (1) and the bottom surface of the drilling jig base (3), and there is a difference between the first angle and the second angle; A clamping space is provided between the positioning base (1) and the drilling jig base (3), and the clamping space is used to clamp the workpiece to be processed.

2. A spatial double-oblique hole multi-angle limit device according to claim 1, characterized in that: The positioning base (1) comprises a first plate (101), a second plate (102) and a third plate (103); the first plate (101), the second plate (102) and the third plate (103) are spliced ​​in pairs and enclosed to form a triangle; The jig seat (3) is located on the first flat plate (101), the first angle is the angle between the second flat plate (102) and the bottom surface of the jig seat (3), and the second angle is the angle between the third flat plate (103) and the bottom surface of the jig seat (3).

3. A spatial double-oblique hole multi-angle limit device as claimed in claim 2, characterized in that: It also comprises a turntable assembly (2), the turntable assembly (2) being rotatably connected to the upper surface of the positioning base (1), the turntable assembly (2) being located in the clamping space and capable of rotating with the workpiece to be processed; The jig seat (3) is provided with a pull rod (4), the pull rod (4) passes through the jig seat (3) and extends along its own axis direction and is inserted into the rotary disk assembly (2); The first flat plate (101) is provided with a positioning pin (204), and the positioning pin (204) is fixedly connected to the turntable assembly (2).

4. A spatial double-oblique hole multi-angle limit device as claimed in claim 3, characterized in that: The rotating disk assembly (2) comprises a deep groove bearing (203) and a positioning disk (201), wherein the deep groove bearing (203) is fixedly connected to the positioning disk (201) and is press-fitted into the first flat plate (101); The positioning disc (201) is arranged on the first flat plate (101) and fits with the first flat plate (101); the first flat plate (101) is provided with a T-shaped ring groove, a process hole is provided on the T-shaped ring groove, a plurality of T-shaped bolts (501) are provided in the T-shaped ring groove, the diameter of the process hole is the same as the diameter of the head of the T-shaped bolt (501), and the tail of the T-shaped bolt (501) passes through the positioning disc (201) upwards and is connected with a nut; A plurality of positioning pin holes are arranged above the positioning disc (201), and the positioning pin (204) passes through one of the positioning pin holes and is fixedly connected to the first flat plate (101).

5. A spatial double-oblique hole multi-angle limit device as claimed in claim 4, characterized in that: A positioning core shaft (202) is provided in the middle of the positioning disc (201), and the positioning core shaft (202) is cylindrical and comprises a first end, a second end and a third end from top to bottom; The bottom of the first end is fixedly connected to the top of the positioning disc (201), the second end extends into the positioning disc (201), the second end is interference fit with the positioning disc (201), and the third end is press-fit into the deep groove bearing (203) and the third end is interference fit with the deep groove bearing (203).

6. A spatial double-oblique hole multi-angle limit device as claimed in claim 4, characterized in that: The positioning disc (201) is provided with a zero scale line, and the zero scale line is used to position the workpiece to be processed.

7. A spatial double-oblique hole multi-angle limit device as claimed in claim 1, characterized in that: The jig seat (3) can completely cover the clamping space, and the jig seat (3) is provided with a plurality of groups of inclined hole positioning holes, wherein the inclined hole positioning holes penetrate from the upper surface of the jig seat (3) to the lower surface of the jig seat (3).

8. A spatial double-oblique hole multi-angle limit device as claimed in claim 7, characterized in that: A drill sleeve (6) is arranged in the inclined hole positioning hole.

9. A spatial double-oblique hole multi-angle limit device as claimed in claim 1, characterized in that: Both ends of the upper surface of the drilling jig seat (3) are provided with semi-waist-shaped grooves, and a zero position engraved line (7) is engraved at the arc of one of the semi-waist-shaped grooves. The zero position engraved line (7) is used to quickly locate the workpiece to be processed.

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