CN218855690U

CN218855690U - Workpiece pressing device

Info

Publication number: CN218855690U
Application number: CN202223423680.7U
Authority: CN
Inventors: 许伟伟; 许丁; 董飞龙; 辛选荣; 梁坤; 卢正良; 高明辉; 耿浩宇; 包玉金; 王欣欣
Original assignee: Luo Anode Top Cold Forging Co ltd; Luoyang Qinhan Precision Industrials Co ltd
Current assignee: Luo Anode Top Cold Forging Co ltd; Luoyang Qinhan Precision Industrials Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-04-14
Anticipated expiration: 2032-12-21

Abstract

A workpiece pressing device is characterized in that a workpiece is placed in a machining tool, a pressing hole is formed in the side face of the machining tool, a support of the device is fixed on the surface of the machining tool, the pressing hole is formed in the surface of the machining tool, a linear driving mechanism is arranged at one end of the support, a telescopic end of the linear driving mechanism is connected with a pressing inclined wedge block, the pressing inclined wedge block is arranged in the support in a sliding mode, and an inclined surface is formed in the pressing inclined wedge block; the other end of the support is provided with a pressing rod which can be inserted into the pressing hole, the pressing rod is installed on the pressing lever and is positioned in front of a lever fulcrum, the lever fulcrum is rotatably connected with the support, one end, opposite to the pressing rod, of the pressing lever is a power end, and the power end is in contact with an inclined plane on the pressing inclined wedge block; and a lever reset mechanism is arranged between the pressing lever and the bracket. This device can provide stable clamp force for the part in the frock.

Description

Workpiece pressing device

Technical Field

The utility model belongs to the metal cutting processing field, concretely relates to work piece closing device.

Background

The utility model relates to a work piece closing device is used for pressing from both sides tightly the ferrous metal part in the drilling processing frock. The structure of the ferrous metal part mainly comprises three parts shown in figure 4: a barrel portion, a flange portion and a small end portion. The flange portion is located between the barrel portion and the small end portion. The part is a connecting piece of an automobile chassis and is used for connecting the automobile chassis and an automobile body. When the automobile is installed, the hole of the cylinder body faces upwards, and moisture and oil stains can enter the hole of the cylinder body in the long-term movement process of the automobile. Therefore, an inclined hole is arranged at the joint of the small end part and the flange, and the inclined hole is mainly used for removing water and oil stains in the cylinder body.

In the prior art, when the inclined hole is machined, (1) if the inclined hole is drilled on a turning and milling compound machine tool, the angle of a power head of the machine tool needs to be adjusted to adapt to the inclination angle of the inclined hole, so that the inclined hole is convenient to machine, and the machining efficiency is low in the mode. (2) If an inclined hole is machined on a common vertical drilling machine, a tool needs to be manufactured, a part to be machined is obliquely arranged in the tool so that the inclined hole can be directly and vertically machined, in order to avoid circumferential and axial movement of the part in machining, the part needs to be clamped on the tool, a pressing hole is usually arranged on the side face of the tool, an inner hexagonal screw is arranged in the pressing hole by using an inner hexagonal wrench, the part is pressed by screwing the inner hexagonal screw, and the inner hexagonal screw is loosened by using the inner hexagonal wrench after drilling; the disadvantages of the method (2): when the screw is used for pressing, the surface of a workpiece can be crushed by overlarge torque, the workpiece cannot be pressed by too small torque, and the instability of operation is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a work piece closing device utilizes lever principle, will compress tightly the pole automatic insertion by power unit and compress tightly the hole and realize compressing tightly and relaxing the part, and the clamp force that provides is stable, has got rid of the instability that the screw compressed tightly among the prior art.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a workpiece pressing device is characterized in that a workpiece is placed in a machining tool, a pressing hole is formed in the side face of the machining tool, a support of the device is fixed on the surface of the machining tool, the pressing hole is formed in the surface of the machining tool, a linear driving mechanism is arranged at one end of the support, a telescopic end of the linear driving mechanism is connected with a pressing inclined wedge block, the pressing inclined wedge block is arranged in the support in a sliding mode, and an inclined surface is formed in the pressing inclined wedge block; the other end of the support is provided with a pressing rod which can be inserted into the pressing hole, the pressing rod is installed on the pressing lever and is positioned in front of a lever fulcrum, the lever fulcrum is rotatably connected with the support, one end, opposite to the pressing rod, of the pressing lever is a power end, and the power end is in contact with an inclined plane on the pressing inclined wedge block; and a lever reset mechanism is arranged between the pressing lever and the bracket.

The pressing rod is a bolt, and the bolt is in threaded connection with the threaded hole of the lever.

The lever fulcrum is a compression lever shaft assembled on the compression lever, and two ends of the compression lever shaft are rotatably supported on two sides of the support.

And bearings are arranged on two sides of the support, and the compression lever shaft is matched with the bearings.

The lever resetting mechanism is arranged between the lever fulcrum and the power end of the pressing lever.

The lever resetting mechanism comprises a spring, a fixed seat and a spring adjusting plug, the fixed seat is connected to the support, the spring is placed in the fixed seat, one end of the spring abuts against the lever, the other end of the spring abuts against the spring adjusting plug, and the spring adjusting plug is in threaded connection with the fixed seat.

The fixed seat is further provided with a spring guide post, the lower end of the spring guide post is connected with the pressing lever, the upper end of the spring guide post is sleeved in the inner hole of the spring adjusting plug, and the spring is sleeved outside the spring guide post.

And a rolling body which is used for contacting with the inclined surface of the pressing inclined wedge block is arranged at the power end of the pressing lever.

The bottom of the support is provided with a mounting groove for mounting wedge block rollers, and the pressing inclined wedge blocks are supported on the wedge block rollers.

The linear driving mechanism is an air cylinder, a cylinder body of the air cylinder is fixedly connected with the support, and an air cylinder rod of the air cylinder is connected with the pressing inclined wedge block through a connecting piece.

The utility model has the advantages that: the utility model discloses utilize lever principle, control the lever by power unit, the drive compresses tightly the pole and lifts or fall, compress tightly the part in the hole in order to press from both sides tight frock that the pole whereabouts inserted the frock, strength size through control power unit, realize the control to compressing tightly the pole holding down force like the pressure of control cylinder, thereby obtain stable clamp force, the artifical instability that compresses tightly has been got rid of, be convenient for the later stage again after adopting the cylinder drive and realize automated control, the production efficiency is improved, the production process is stable, the production cost is reduced, the market competitiveness is improved.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an end view of the present invention;

fig. 3 is a schematic structural view of the bracket of the present invention;

FIG. 4 is a cross-sectional structural view of the steel sleeve component;

FIG. 5 is a cross-sectional view of the structure of the steel sleeve component assembled in a drilling tool;

fig. 6 is a schematic view of the state of the present invention assembled on a drilling tool;

the labels in the figure are: 1. the device comprises a hexagon head bolt, 2, a hexagon nut, 3, a pressing lever, 4, a pressing lever shaft, 5, a spring fixing seat, 6, a spring guide column, 7, a spring adjusting plug, 8, a spring, 9, a bearing, 10, a fixing shaft, 11, a pressing inclined wedge block, 12, a stud bolt, 13, a cylinder body, 14, a cylinder rod, 15, a cylinder connecting plate, 16, a wedge block roller, 17, a support, 1701, a mounting groove, 1702, a bearing hole, 18, a gasket, 19, a deep groove ball bearing, 20 and a fixing nut.

Detailed Description

The following detailed description of the present invention is made with reference to the accompanying drawings and examples, but not to be construed as a limitation of the present invention.

The utility model provides a work piece closing device is used for pressing from both sides the steel bushing part 100 of tight dress in drilling processing frock 200, steel bushing part 100 as shown in figure 4, including stack shell part 101, flange part 102 and tip part 103, have a inclined hole 104 in tip part 103 and flange part 102 handing-over department, the drill way of stack shell part 101 is provided with U type groove 105. The drilling tool 200 is for facilitating the machining of the inclined hole 104. The drilling machining tool 200 comprises a base and a positioning sleeve 201, the base is formed by connecting two tool side plates 202 and a tool bottom plate 203, the inner side surfaces of the tool side plates 202 are provided with inclined planes for supporting the positioning sleeve 201, the positioning sleeve 201 is placed on the inclined planes and fastened by screws, a steel sleeve part 100 is installed from the front end of the positioning sleeve 201, a U-shaped groove 105 at the hole opening of the steel sleeve part 100 is clamped on a positioning pin shaft 204 in the positioning sleeve 201, circumferential rotation of the part in inclined hole machining is prevented, a flange part 102 on the steel sleeve part 100 is attached to the opening edge of the positioning sleeve 201, axial positioning of the part is achieved, and the part is prevented from falling into the positioning sleeve 201; the upper surface of the locating sleeve 201 is provided with a compression hole 205, and the state that the steel sleeve part 100 is arranged in the drilling tool 200 can be referred to as figure 5.

A work piece closing device as shown in fig. 1-3, including support 17, compress tightly the cylinder and the drive assembly that the subassembly compressed tightly the subassembly with the drive, support 17 passes through the bolt fastening at the position sleeve 201 upper surface of drilling processing frock 200, compress tightly the subassembly including compressing tightly lever 3 and compression rod, compress tightly lever 3 and rotate to support on support 17, compression rod installs the front end that compresses tightly lever 3, and the rear end that compresses tightly lever 3 passes through drive assembly and cylinder connection, the cylinder is connected on support 17, compress tightly and still be provided with lever canceling release mechanical system between lever 3 and the support 17. The compression rod adopts a hexagon head bolt 1. The transmission assembly comprises a stud 12 and a pressing inclined wedge 11, and the pressing inclined wedge 11 is provided with an inclined surface and can act on the power end of the pressing lever 3.

With continued reference to fig. 1-3, the particular assembly sequence of the workpiece pressing device is as follows:

(1) Screwing the hexagon head bolt 1 into the hexagon nut 2, screwing the hexagon head bolt 1 into a threaded hole at the front end of the compression lever 3, and exposing the lower end of the hexagon head bolt 1 out of the compression lever 3; pressing a fixed shaft 10 into the rear end of the compression lever 3 to serve as a power end of the compression lever 3, wherein two bearings 9 are respectively arranged at two ends of the fixed shaft 10, and the fixed shaft 10, the compression lever 3 and the bearings 9 are in interference fit;

(2) Putting the parts into a bracket 17 as an assembly, then, installing a compression lever shaft 4 into a compression lever 3 in an interference manner, respectively extending two ends of the compression lever shaft 4 from bearing holes 1702 on two sides of the bracket 17, installing a deep groove ball bearing 19 in the bearing holes 1702, carrying out interference fit on the compression lever shaft 4 and the inner ring of the deep groove ball bearing 19, then, sleeving a gasket 18 on the extended compression lever shaft 4 and screwing a fixing nut 20;

(3) One end of a stud 12 is screwed into a threaded hole of a cylinder rod 14, the other end of the stud is in threaded connection with a pressing inclined wedge 11, then a plurality of wedge rollers 16 are placed in parallel in a mounting groove 1701 at the bottom of a support 17, a gap for the sliding of the pressing inclined wedge 11 is reserved between the wedge rollers 16 and a bearing 9 at the rear end of the pressing lever, a cylinder block 13 is connected with the end of the support 17 so as to push the pressing inclined wedge 11 connected with the cylinder rod 14 into the gap from the end of the support 17, and the cylinder block 13 is connected with the support 17 through a cylinder connecting plate 15;

(4) The installation of the lever reset mechanism, screw in the screw hole and tighten the underpart of the spring guide post 6 on the upper end of the hold-down lever 3, and then the spring 8 is fitted on the spring guide post 6, the underpart of the spring 8 supports on the upper end surface of the hold-down lever 3, then connect the spring fixing seat 5 with both sides of the support 17 by the bolt fastening through the hole of its both sides, and then screw in the spring fixing seat 5 the spring regulation end cap 7, the spring regulation end cap 7 bears against the upper end of the said spring 8 in order to compress the spring 8, regulate the degree of screwing of the end cap 7 through adjusting the spring, make the spring 8 have certain pre-compression degree, in order to facilitate the return stroke of the hold-down lever 3; thus, the workpiece pressing device is completed.

As shown in fig. 6, the bracket 17 of the installed workpiece pressing device is fixed on the upper surface of the drilling tool 200 of the steel sleeve part 100 by bolts, and the working process of the workpiece pressing device is as follows:

(1) In the pushing-out state of the air cylinder, the air cylinder rod 14 pushes the pressing inclined wedge 11 to move, the inclined plane of the pressing inclined wedge 11 extrudes the bearing 9 at the power end of the pressing lever 3, the bearing 9 is pushed to drive the power end of the pressing lever 3 to move upwards, so that the pressing lever 3 rotates around the fulcrum, namely the center of the pressing lever shaft 4 (anticlockwise rotation in figure 1), and further drives the hexagon head bolt 1 to be inserted downwards into a pressing hole in the upper surface of a drilling tool so as to press the steel sleeve part 100 in the tool positioning sleeve 201, and further, the inclined hole 104 is machined; as the pressing lever 3 rotates, the spring 8 is compressed.

(2) Under the retraction state of the air cylinder, the air cylinder rod 14 drives the pressing inclined wedge block 11 to return, in the return process, the bearing 9 at the power end of the pressing lever 3 gradually descends along the inclined plane of the pressing inclined wedge block 11, the compressed spring 8 releases the elastic force, so that the bearing 9 at the power end of the pressing lever 3 can be gradually restored to the original position by being attached to the pressing inclined wedge block 11, the pressing lever 3 rotates clockwise around the fulcrum of the pressing lever 3 (in the figure 1), the end face of the hexagon head bolt 1 is driven to leave the surface of the part, and the part can be easily taken out.

The above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and it should be understood by those of ordinary skill in the art that the embodiments of the present invention can be modified or replaced with equivalents with reference to the above embodiments, and any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are all within the scope of the claims of the present application.

Claims

1. The utility model provides a work piece closing device, the work piece is placed in the processing frock, and processing frock side is provided with presses tight hole, its characterized in that: a support of the device is fixed on the surface of a machining tool provided with a compression hole, one end of the support is provided with a linear driving mechanism, the telescopic end of the linear driving mechanism is connected with a compression inclined wedge block, the compression inclined wedge block is arranged in the support in a sliding manner, and an inclined surface is arranged on the compression inclined wedge block; the other end of the support is provided with a pressing rod which can be inserted into the pressing hole, the pressing rod is installed on the pressing lever and is positioned in front of a lever fulcrum, the lever fulcrum is rotatably connected with the support, one end, opposite to the pressing rod, of the pressing lever is a power end, and the power end is in contact with an inclined plane on the pressing inclined wedge block; and a lever reset mechanism is arranged between the pressing lever and the bracket.

2. A workpiece pressing apparatus as defined in claim 1, wherein: the pressing rod is a bolt, and the bolt is in threaded connection with the threaded hole of the lever.

3. The workpiece pressing apparatus as set forth in claim 1, wherein: the lever fulcrum is a pressing lever shaft assembled on the pressing lever, and two ends of the pressing lever shaft are rotatably supported on two sides of the support.

4. A workpiece pressing apparatus as defined in claim 3, wherein: bearings are installed on two sides of the support, and the compression lever shaft is installed in a matched mode with the bearings.

5. A workpiece pressing apparatus as defined in claim 1, wherein: the lever resetting mechanism is arranged between the lever fulcrum and the power end of the pressing lever.

6. The workpiece pressing device according to claim 5, wherein: the lever resetting mechanism comprises a spring, a fixed seat and a spring adjusting plug, the fixed seat is connected to the support, the spring is placed in the fixed seat, one end of the spring abuts against the lever, the other end of the spring abuts against the spring adjusting plug, and the spring adjusting plug is in threaded connection with the fixed seat.

7. The workpiece pressing device according to claim 6, wherein: the fixing seat is further provided with a spring guide post, the lower end of the spring guide post is connected with the pressing lever, the upper end of the spring guide post is sleeved in the inner hole of the spring adjusting plug, and the spring sleeve is arranged outside the spring guide post.

8. A workpiece pressing apparatus as defined in claim 1, wherein: and a rolling body which is used for contacting the inclined surface of the pressing inclined wedge block is arranged at the power end of the pressing lever.

9. A workpiece pressing apparatus as defined in claim 1, wherein: the bottom of the support is provided with a mounting groove for mounting wedge block rollers, and the pressing inclined wedge blocks are supported on the wedge block rollers.

10. A workpiece pressing apparatus according to any one of claims 1 to 9, wherein: the linear driving mechanism is an air cylinder, a cylinder body of the air cylinder is fixedly connected with the support, and an air cylinder rod of the air cylinder is connected with the pressing inclined wedge block through a connecting piece.