CN217493413U

CN217493413U - Circumference inclined hole graduation boring grab

Info

Publication number: CN217493413U
Application number: CN202221385692.2U
Authority: CN
Inventors: 顾震杰
Original assignee: Suzhou Rongjingsheng Machinery Manufacturing Co ltd
Current assignee: Suzhou Rongjingsheng Machinery Manufacturing Co ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-09-27
Anticipated expiration: 2032-06-06

Abstract

The invention provides a circumference inclined hole indexing drilling fixture which comprises a bottom plate, wherein an inclined vertical plate and a vertical plate which are arranged on the left and right are arranged on the bottom plate, a fixing sleeve is arranged in the middle of the upper end of the inclined vertical plate in a penetrating mode, the left end of the fixing sleeve is rotatably connected with an angle positioning rotating wheel, the right end of the fixing sleeve is provided with a cover plate in a matched mode, a jacket fixing seat is arranged inside the fixing sleeve, the left end of the jacket fixing seat is connected with a force transmission nut in a threaded mode, the inner side of the right end of the fixing sleeve is an inner conical surface, an elastic jacket is arranged inside the fixing sleeve, the left end of the elastic jacket is connected with an adjusting rod fixing nut in a threaded mode, the right end of the elastic jacket fixing nut is provided with a clamping flap, the middle of the adjusting rod fixing nut is connected with a positioning adjusting rod in a threaded mode, and a jacket fixing seat return spring is arranged between the adjusting rod fixing nut and the force transmission nut. The invention has simple structure, convenient use and reliable operation, and provides professional clamping, positioning and overturning schemes for the processing of the parts; the drilling problem of the parts is solved, the production efficiency is improved, the production cost and the labor intensity are reduced, and the requirements on hole characteristics and position accuracy are met.

Description

Circumference inclined hole graduation boring grab

Technical Field

The invention relates to the technical field of clamps, in particular to a circumference inclined hole indexing drilling clamp.

Background

In the machining and manufacturing process, various machining processes and methods are required from a blank material to a finished part, and among various characteristics of the part, the part hole characteristics account for about 30%, so that the hole machining of the part is universal. In the actual working process, different machining processes and machining methods are adopted for different holes. As shown in fig. 1-3, the parts of the 6 inclined hole feature are evenly distributed on the circumference. The central line of the hole is not perpendicular to the axis of the part, but is designed according to a certain inclination angle, so that the hole can not be directly machined by using a drill bit. In addition, because the circumference of the part is provided with 6 uniformly distributed holes, the part must be accurately rotated by 60 degrees to continue to process the next hole characteristic after a hole is processed. This ensures the mutual position of the 6 holes evenly distributed over the circumference of the part. Therefore, special drilling fixtures for the parts must be designed specifically.

Disclosure of Invention

In order to solve the problems, the invention discloses a circumference inclined hole indexing drilling clamp which is simple in structure, convenient to use and reliable in operation, and provides professional clamping, positioning and overturning schemes for the machining of parts of the type; the drilling problem of the parts is solved, the production efficiency is improved, the production cost and the labor intensity are reduced, and the requirements on hole characteristics and position accuracy are met.

The specific scheme is as follows:

the utility model provides a circumference inclined hole graduation boring grab for cooperation cylinder inclined hole part uses, its characterized in that: the device comprises a bottom plate which is horizontally arranged, an inclined vertical plate and a vertical plate which are arranged on the left and right are arranged on the bottom plate, the inclined vertical plate is of a plate-shaped structure with the upper end inclined towards the left, a fixing sleeve is arranged in the middle of the upper end of the inclined vertical plate in a penetrating way, the fixing sleeve is of a cylindrical structure, the left end of the fixing sleeve is rotatably connected with an angle positioning rotating wheel, a cover plate is arranged at the right end in a matching way, a jacket fixing seat is arranged in the fixing sleeve, the angle positioning rotating wheel is of a cylindrical structure with an opening at the right end, six positioning holes are uniformly distributed on the right end surface of the angle positioning rotating wheel along the circumferential direction, a positioning ring which is rotatably connected in the left end of the fixing sleeve is arranged in the middle of the right end, a clamping power adjusting screw is in threaded connection with the middle of the left end, six mounting grooves are uniformly distributed on the left end surface of the fixing sleeve along the circumferential direction, positioning steel balls are arranged in the mounting grooves, the positioning steel balls correspond to the positioning holes, the ball diameter is larger than the diameter of the positioning holes, and a spring is arranged between the positioning steel balls and the bottoms of the mounting grooves, the clamping sleeve fixing seat is of a cylindrical structure, a force transmission nut which is abutted to the threaded end of the clamping power adjusting screw is connected to the inner side of the right end of the clamping sleeve fixing seat through internal threads at the left end of the clamping sleeve fixing seat, an inner conical surface is arranged on the outer side of the right end of the clamping sleeve in a matched mode through a bearing, an elastic clamping sleeve which can slide left and right is arranged inside the clamping sleeve, the elastic clamping sleeve is of a cylindrical structure, an adjusting rod fixing nut is connected to the internal threads at the left end of the elastic clamping sleeve, a clamping flap which can clamp towards the middle portion of the clamping sleeve is arranged at the right end of the clamping sleeve along the circumferential direction, the outer side of the clamping flap is an outer conical surface matched with the inner conical surface, the cylindrical inclined hole part is clamped in the middle of the clamping flap, a positioning adjusting rod is connected to the middle of the adjusting rod fixing nut through threads, and a clamping sleeve fixing seat return spring is arranged between the adjusting rod fixing nut and the force transmission nut.

As a further improvement of the invention, the cylindrical inclined hole part comprises a part body and a part head which are arranged on the left and right, wherein the part body is of a cylindrical structure, a central hole is formed in the middle of the cylindrical inclined hole part along the axis direction, the right section of the cylindrical inclined hole part is a threaded hole, six inclined holes are uniformly distributed in the side surface of the part head along the circumferential direction, and the included angle between each inclined hole and the central hole is 80 degrees.

As a further improvement of the invention, the outer side of the positioning ring is provided with an annular groove, the left side of the fixing sleeve is uniformly distributed with three rotating wheel positioning screws along the circumferential direction, the rotating wheel positioning screws penetrate through the side wall of the fixing sleeve, and the thread ends of the rotating wheel positioning screws are slidably arranged in the annular groove.

As a further improvement of the invention, the vertical plate is vertically arranged, the middle part of the upper end of the vertical plate is provided with a U-shaped hole, the upper end of the U-shaped hole is communicated with the top surface of the vertical plate, the upper end of the vertical plate is provided with a drill bushing fixing plate through a drill bushing fixing plate fastening screw, and the middle part of the drill bushing fixing plate is provided with a drill bushing in a matching way.

As a further improvement of the invention, the cover plate is of a circular ring structure and is fixed at the right end of the fixed sleeve through cover plate fastening screws uniformly distributed along the circumferential direction, and the left side of the cover plate is propped against the clamping flap.

Compared with the prior art, the invention has the beneficial effects that:

1. the workpiece is obliquely placed on the clamp according to a certain angle, so that the drilled hole is an inclined hole, the angle of the inclined hole does not need to be considered when an operator punches the hole, the angle is ensured by the clamp, and the reliability and consistency are high.

2. The radial positioning of the workpiece depends on the spring jacket to clamp and realize natural positioning at the same time, the positioning precision is high, the position precision of the hole is easy to ensure, and the workpiece is convenient to assemble, disassemble and use.

3. The axial positioning of the workpiece is adjusted and aligned by adjusting the positioning adjusting rod, and after the axial positioning is adjusted, the workpiece can be subjected to axial rigid positioning, so that the positioning is stable and reliable, and the adjustment is convenient.

4. When a workpiece is clamped, the clamping power adjusting screw is only required to be screwed, and the clamping sleeve fixing seat can be pushed, so that the spring clamping sleeve is forced to clamp the workpiece, and the clamping is simple, easy and reliable.

5. After the hole is machined, the angle positioning rotating wheel is rotated to complete the transposition of the angle positioning rotating wheel hole and the steel ball, and then the next hole can be machined without considering the factors of angle, size, position and the like, so that the operation of workers is greatly facilitated.

6. After the holes are completely machined, the clamping power adjusting screws are screwed in the opposite direction, the jacket fixing seat is naturally pushed open by the return springs of the jacket fixing seat, and the workpiece can be loosened by the spring jacket.

Drawings

FIG. 1 is a perspective view of a cylindrical inclined hole part according to the present invention.

FIG. 2 is a schematic view of a cylindrical inclined hole part according to the present invention.

Fig. 3 is a cross-sectional view a-a of fig. 2.

FIG. 4 is a first schematic diagram of the present invention.

FIG. 5 is a second schematic diagram of the present invention.

Fig. 6 is a schematic view of the internal structure of the present invention.

FIG. 7 is a schematic view of the axial positioning and radial clamping of the cylindrical inclined hole part of the present invention.

Fig. 8 is a schematic view of the circumferential rotary indexing positioning of the present invention.

List of reference numerals:

1-a cylindrical inclined hole part, 2-a drill bushing fixing plate, 3-a drill bushing, 4-a drill bushing fixing plate fastening screw, 5-a cover plate fastening screw, 6-a cover plate, 7-a fixing sleeve, 8-an inclined vertical plate, 9-an angle positioning rotating wheel, 10-a clamping power adjusting screw, 11-a bottom plate, 12-a vertical plate, 13-a bearing, 14-an elastic jacket, 15-a jacket fixing seat, 16-a positioning adjusting rod, 17-a spring, 18-a positioning steel ball, 19-an adjusting rod fixing nut, 20-a jacket fixing seat return spring, 21-a force transmission nut and 22-a rotating wheel positioning screw.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.

As shown in fig. 6, a circumference inclined hole indexing drilling fixture is used for matching with a cylindrical inclined hole part 1, and is characterized in that: comprises a bottom plate 11 which is horizontally arranged, an inclined vertical plate 8 and a vertical plate 12 which are arranged left and right are arranged on the bottom plate 11, the inclined vertical plate 8 is a plate-shaped structure the upper end of which is inclined to the left, a fixing sleeve 7 is penetrated in the middle of the upper end of the inclined vertical plate, the fixing sleeve 7 is cylindrical, the left end of the inclined vertical plate is rotatably connected with an angle positioning rotating wheel 9, the right end is matched with a cover plate 6, a jacket fixing seat 15 is arranged in the inclined vertical plate, the angle positioning rotating wheel 9 is cylindrical with an opening at the right end, six positioning holes are uniformly distributed on the right end surface of the angle positioning rotating wheel 9 along the circumferential direction, a positioning ring which is rotatably connected in the left end of the fixing sleeve 7 is arranged in the middle of the right end, a clamping power adjusting screw 10 is in threaded connection with the middle of the left end, six mounting grooves are uniformly distributed on the left end surface of the fixing sleeve 7 along the circumferential direction, positioning steel balls 18 are arranged in the mounting grooves, the positioning steel balls 18 correspond to the positions of the positioning holes, the ball diameters are larger than the apertures of the positioning holes, and a spring 17 is arranged between the positioning steel balls 18 and the bottoms of the mounting grooves, the clamping sleeve fixing seat 15 is of a cylindrical structure, a force transmission nut 21 which is abutted against the threaded end of the clamping power adjusting screw 10 is connected to the left end of the clamping sleeve fixing seat through internal threads, the inner side of the right end is an inner conical surface, the outer side of the right end is connected with the inner wall of the right end of the fixing sleeve 7 through a bearing 13 in a matched mode, an elastic clamping sleeve 14 capable of sliding left and right is arranged inside the clamping sleeve, the elastic clamping sleeve 14 is of a cylindrical structure, a regulating rod fixing nut 19 is connected to the left end of the clamping sleeve through internal threads, a clamping flap capable of clamping towards the middle portion is arranged on the right end of the clamping flap in the circumferential direction, the outer side of the clamping flap is an outer conical surface matched with the inner conical surface, the cylindrical inclined hole part 1 is clamped in the middle of the clamping flap, a positioning regulating rod 16 is connected to the middle of the regulating rod fixing nut 19 through threads, and a clamping sleeve fixing seat return spring 20 is arranged between the regulating rod fixing nut 19 and the force transmission nut 21. The device has a clear structure, and when the device is used, the device is fixed on a drilling machine tool, and the position of a drill sleeve hole is aligned, so that the drilling operation can be carried out.

In this embodiment, as shown in fig. 3, the cylindrical inclined hole part 1 is composed of a part body and a part head which are arranged left and right, wherein the part body is of a cylindrical structure, a central hole is formed in the middle of the cylindrical inclined hole part 1 along the axis direction, the right section of the cylindrical inclined hole part is a threaded hole, six inclined holes are uniformly distributed in the side surface of the part head along the circumferential direction, and an included angle between each inclined hole and the central hole is 80 °.

In this embodiment, an annular groove is formed in the outer side of the positioning ring, three rotating wheel positioning screws 22 are uniformly distributed on the left side of the fixing sleeve 7 along the circumferential direction, the rotating wheel positioning screws 22 penetrate through the side wall of the fixing sleeve 7, and the threaded ends of the rotating wheel positioning screws are slidably arranged in the annular groove.

In this embodiment, the vertical plate 12 is vertically arranged, a U-shaped hole is formed in the middle of the upper end of the vertical plate 12, the upper end of the U-shaped hole is communicated with the top surface of the vertical plate 12, the drill bushing fixing plate 2 is installed at the upper end of the vertical plate 12 through a drill bushing fixing plate fastening screw 4, and the drill bushing 3 is installed in the middle of the drill bushing fixing plate 2 in a matched manner.

In the present embodiment, the cover plate 6 is of a circular ring structure and is fixed at the right end of the fixing sleeve 7 by cover plate fastening screws 5 uniformly distributed along the circumferential direction, and the left side of the cover plate is abutted against the clamping flap.

The using method of the invention is as follows:

the structure layout of the circumference inclined hole indexing drilling clamp can be divided into three parts of positioning, clamping and indexing. When the clamping device is used, the axial position of a workpiece drilled hole can be adjusted by adjusting the positioning adjusting rod 16, the workpiece is arranged in an inner hole of the elastic clamping sleeve 14, the power adjusting screw 10 is clamped in a rotating mode, the adjusting screw 10 pushes the force transmission nut 21, the clamping sleeve fixing seat 15 is pushed, and the front end conical surface of the clamping sleeve fixing seat 15 forces the elastic clamping sleeve 14 to clamp the workpiece. Thus, the drilling work can be performed.

When a next hole needs to be drilled by rotating the indexing mechanism, the angle positioning rotating wheel 9 is rotated manually, so that the positioning steel balls 18 fall into six uniformly distributed holes on the angle positioning rotating wheel 9, and the indexing and the centering of the workpiece are realized.

When the clamping power adjusting screw 10 is rotated to push the force transmission nut 21 and the jacket fixing seat 15, the force transmission nut 21 also pushes the return spring 20 between the elastic jacket adjusting rod fixing nut 19 and the elastic jacket adjusting rod.

When the workpiece needs to be taken down, the power adjusting screw 10 is clamped in a reverse rotating mode, the force transmission nut 21 is pushed by the return spring 20, the jacket fixing seat 15 is pushed out in a reverse direction, the conical surface at the front end of the jacket fixing seat 15 is separated from the elastic jacket 14, the workpiece is loosened, and then the workpiece can be taken down.

The axial positioning and radial clamping principle of the workpiece in the invention is as follows:

the positioning of the workpiece is divided into an axial positioning part and a radial positioning part, as shown in fig. 7.

1. The axial positioning refers to the positioning along the axial direction of the central line of the workpiece, the position of the positioning adjusting rod 16 is adjusted by a common screwdriver, so that the positioning adjusting rod moves on the adjusting fixing nut 19 in the axial direction, the workpiece is accurately positioned in the axial direction, and the position of the machined hole can be determined. When the axial position of the workpiece is adjusted, the clamping power adjusting nut 10 is only required to be taken down for operation, and the device is convenient and easy to operate and reliable to operate.

2. Radial positioning refers to positioning of a workpiece in the circumferential direction, the power adjusting screw 10 is clamped on the rotary clamp, the adjusting screw 10 pushes the force transmission nut 21, so that the jacket fixing seat 15 is pushed, and the front end conical surface of the jacket fixing seat 15 forces the elastic jacket 14 to clamp the workpiece and complete radial positioning of the workpiece.

The positioning principle of circumferential rotation indexing in the invention is as follows:

as shown in fig. 8, taking the case of drilling six holes, an angular positioning wheel with 6 uniformly distributed holes is designed, the position of the workpiece axis is ensured to be consistent with that of the wheel axis, for calculation convenience, and sufficient holding power is provided, a form of "six holes and three balls" is adopted, that is, six holes are drilled, and steel balls pushed by 3 sets of springs installed in a fixed sleeve 7 are clamped in 3 holes of the angular positioning wheel, so that fixation during indexing is realized. The elastic force of the spring is utilized to generate the thrust to the steel ball so as to clamp the chuck, and the indexing of the clamp is realized more simply and efficiently. After a hole is machined, the angle positioning rotating wheel rotates to form a hole position, and the steel balls pushed by the 3 sets of springs fall into the other 3 holes of the angle positioning rotating wheel simultaneously, so that the process is continuously circulated until the hole machining is finished. If the number of holes of the machined workpiece changes, only the angle positioning rotating wheel with the corresponding number of holes needs to be replaced, so that the clamp is convenient and quick, and the application range of the clamp is expanded.

In order to drill 6 inclined holes with the diameter of 2.5 uniformly distributed on the circumferential surface of the outer surface of the workpiece, the rotary transposition function of the clamp is required to be designed. An annular groove is formed on the cylindrical surface of the angle positioning rotating wheel 9, is movably connected to the fixed sleeve 7 through a rotating wheel positioning screw 22 arranged on the fixed sleeve 7, and realizes rotation in the fixed sleeve 7. Thereby realizing the rotation and the positioning of the workpiece by rotating the angle positioning rotating wheel 9.

The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.

Claims

1. The utility model provides a circumference inclined hole graduation boring grab for cooperation cylinder inclined hole part (1) uses, its characterized in that: the device comprises a bottom plate (11) which is horizontally arranged, wherein an inclined vertical plate (8) and a vertical plate (12) which are arranged left and right are arranged on the bottom plate (11), the inclined vertical plate (8) is of a plate-shaped structure with the upper end inclined to the left, a fixing sleeve (7) is arranged in the middle of the upper end in a penetrating manner, the fixing sleeve (7) is of a cylindrical structure, the left end of the fixing sleeve (7) is rotatably connected with an angle positioning rotating wheel (9), a cover plate (6) is installed at the right end in a matching manner, a jacket fixing seat (15) is arranged in the right end, the angle positioning rotating wheel (9) is of a cylindrical structure with an opening at the right end, six positioning holes are uniformly distributed in the right end surface of the angle positioning rotating wheel along the circumferential direction, a positioning ring which is rotatably connected in the left end of the fixing sleeve (7) is arranged in the middle of the right end, a clamping power adjusting screw (10) is in threaded connection with the middle of the left end surface of the fixing sleeve (7), six mounting grooves are uniformly distributed along the circumferential direction, and positioning steel balls (18) are arranged in the mounting grooves, the positioning steel ball (18) corresponds to the positioning hole in position, the ball diameter of the positioning steel ball is larger than the aperture of the positioning hole, a spring (17) is arranged between the positioning steel ball (18) and the bottom of the mounting groove, the jacket fixing seat (15) is of a cylindrical structure, a force transmission nut (21) which is abutted against the threaded end of the clamping power adjusting screw (10) is connected in the left end of the jacket fixing seat in a threaded manner, the inner side of the right end is an inner conical surface, the outer side of the right end is in matched connection with the inner wall of the right end of the fixing sleeve (7) through a bearing (13), an elastic jacket (14) capable of sliding left and right is arranged in the jacket fixing seat, the elastic jacket (14) is of a cylindrical structure, an adjusting rod fixing nut (19) is connected in the left end of the jacket in a threaded manner, a clamping flap capable of clamping towards the middle is arranged on the right end in the circumferential direction, the outer side of the clamping flap is an outer conical surface matched with the inner conical surface, and the cylindrical inclined hole part (1) is clamped in the middle of the clamping flap, the middle part of the adjusting rod fixing nut (19) is in threaded connection with a positioning adjusting rod (16), and a jacket fixing seat return spring (20) is arranged between the adjusting rod fixing nut (19) and the force transmission nut (21).

2. The circumferential inclined hole indexing drilling jig as claimed in claim 1, wherein: the cylinder inclined hole part (1) comprises the part body and the part head that control the setting, and wherein, the part body is cylindric structure, the centre bore has been seted up along the axis direction in the middle part of cylinder inclined hole part (1), and wherein the right side section is the screw hole, the side of part head has six inclined holes along the circumferencial direction equipartition, the inclined hole is 80 with the contained angle of centre bore.

3. The circumferential inclined hole indexing drilling jig according to claim 1, wherein: annular slot has been seted up in the outside of holding ring, the left side of fixed cover (7) has three runner set screw (22) along the circumferencial direction equipartition, runner set screw (22) run through the lateral wall of fixed cover (7), and its screw thread end slidable arranges in annular slot.

4. The circumferential inclined hole indexing drilling jig according to claim 1, wherein: the vertical plate (12) is vertically arranged, a U-shaped hole is formed in the middle of the upper end of the vertical plate (12), the upper end of the U-shaped hole is communicated with the top surface of the vertical plate (12), a drill bushing fixing plate (2) is installed at the upper end of the vertical plate (12) through a drill bushing fixing plate fastening screw (4), and a drill bushing (3) is installed in the middle of the drill bushing fixing plate (2) in a matched mode.

5. The circumferential inclined hole indexing drilling jig according to claim 1, wherein: the cover plate (6) is of a circular ring-shaped structure and is fixed at the right end of the fixed sleeve (7) through cover plate fastening screws (5) which are uniformly distributed along the circumferential direction, and the left side of the cover plate is abutted to the clamping flap.