CN219310729U

CN219310729U - Rectangular workpiece clamping tool

Info

Publication number: CN219310729U
Application number: CN202320305687.4U
Authority: CN
Inventors: 陈威涛; 李冬; 徐龙勇; 郭永亮; 谷宏亮
Original assignee: Weihai Cosco Marine Heavy Industry Technology Co ltd
Current assignee: Weihai Cosco Marine Heavy Industry Technology Co ltd
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-07-07
Anticipated expiration: 2033-02-23

Abstract

The utility model provides a rectangular workpiece clamping tool, which relates to the technical field of tool clamps and comprises a clamping disc, wherein a clamping table protruding forwards is arranged in the middle of the front end surface of the clamping disc, and the clamping table is rectangular; the middle part of the front end surface of the clamping table is recessed backwards to form a rectangular clamping groove; the clamping table is provided with a fixing mechanism corresponding to the clamping groove; the fixing mechanism comprises a clamping mechanism and a compressing mechanism, a group of clamping mechanisms are symmetrically arranged on the upper part and the lower part of the clamping table, and a plurality of compressing mechanisms are arranged on the front end surface of the clamping table; the rectangular workpiece clamping tool is provided with the clamping groove, and the rectangular workpiece can be clamped through the matching action of the clamping mechanism and the pressing mechanism; the rectangular workpiece clamping tool and the three-jaw chuck are matched for use, so that the machining range of the numerical control lathe is enlarged, and the universality and the economical efficiency of the common lathe are enhanced.

Description

Rectangular workpiece clamping tool

Technical Field

The utility model relates to the technical field of tool fixtures, in particular to a rectangular workpiece clamping tool.

Background

A numerical control lathe is one of the numerical control lathes that are widely used. The three-jaw chuck is a machine tool accessory for clamping and positioning a workpiece by utilizing radial movement of three movable jaws uniformly distributed on a chuck body.

A rectangular workpiece is welded on the winch reel, a threaded hole is formed in the rectangular workpiece, and a cable is locked by a stuffing box after passing through the threaded hole in the rectangular workpiece. At present, most of numerical control lathes used in workshops clamp workpieces to be machined by using a three-jaw chuck when machining the workpieces, but the three-jaw chuck can only clamp workpieces such as round workpieces, regular hexagons and the like, has poor universality and cannot clamp workpieces such as rectangular workpieces, so that the machining range of an ordinary lathe provided with the three-jaw chuck is limited, and the rectangular workpieces cannot be machined. If a rectangular workpiece needs to be processed, a more advanced processing center with a four-jaw chuck needs to be used for clamping the rectangular workpiece to be processed, so that the processing cost of the rectangular workpiece is higher, and the economical efficiency is poor.

The Chinese patent grant publication No. CN110496978A discloses a three-jaw structure for clamping a square workpiece, which comprises a disc-shaped chuck, wherein the chuck is connected with a jaw I, a jaw II and a jaw III in a self-centering manner, the jaw I is provided with a groove at the end part, the groove comprises two contact surfaces, two lower side surfaces and a bottom surface, the two contact surfaces are in an eight shape, the included angle is a right angle, the jaw II is provided with a jaw II clamping surface, the jaw III is provided with a jaw III clamping surface, the jaw II clamping surface and the jaw III clamping surface are in an inverted eight shape, and the included angle is a right angle; the three-jaw structure is suitable for alternately processing and clamping round and square workpieces, the self-centering three-jaw chuck is required to be installed on a numerical control lathe when the three-jaw structure is used, then the three jaws of the self-centering three-jaw chuck are replaced by the I jaw, the II jaw and the III jaw, when the structure is not used after processing, the I jaw, the II jaw and the III jaw are required to be detached and replaced by the three jaws of the original self-centering three-jaw chuck, and for rectangular workpieces required by winch reels only to be processed, the structure is inconvenient to use.

Disclosure of Invention

In order to achieve the above purpose, the utility model adopts the following technical scheme: the rectangular workpiece clamping tool comprises a clamping disc, wherein a clamping table protruding forwards is arranged in the middle of the front end face of the clamping disc, and the clamping table is rectangular; the middle part of the front end surface of the clamping table is recessed backwards to form a rectangular clamping groove; the clamping table is provided with a fixing mechanism corresponding to the clamping groove.

Further, the fixing mechanism comprises a clamping mechanism and a compressing mechanism, a group of clamping mechanisms are symmetrically arranged on the upper part and the lower part of the clamping table, and a plurality of compressing mechanisms are arranged on the front end face of the clamping table.

Further, each clamping mechanism comprises a clamping bolt and a locking nut, and the locking nut is sleeved on the upper part of a screw rod of the clamping bolt; the upper portion, the lower part of clamping platform all are provided with the screw hole of a number with clamp bolt matched with, clamp bolt's screw rod lower part inserts in the screw hole inside.

Further, each pressing mechanism comprises a pressing bolt and a pressing fixed block, a second threaded hole matched with the pressing bolt is formed in one side of the pressing fixed block, and the pressing fixed block is sleeved on the upper portion of a screw rod of the pressing bolt;

the front end face of the clamping table is provided with a third threaded hole matched with the compression bolt, and the lower part of the screw rod of the compression bolt is inserted into the third threaded hole.

Further, the middle part of the clamping disc is provided with a process hole along the front-back direction.

Further, the clamping mechanism comprises two clamping mechanisms which are symmetrically arranged on the clamping table.

Further, the four pressing mechanisms are distributed at four corners of the front end surface of the clamping table in a central symmetry mode by taking the axis of the process hole as the center.

Further, the clamping table extends from the left end of the clamping disc to the right end of the clamping disc; the clamping groove extends from the left end of the clamping table to the right end of the clamping table.

Compared with the prior art, the rectangular workpiece clamping tool has the following beneficial effects: the rectangular workpiece clamping tool is provided with the clamping groove, and the rectangular workpiece can be clamped through the matching action of the clamping mechanism and the pressing mechanism; the rectangular workpiece clamping tool and the three-jaw chuck are matched for use, so that the machining range of the numerical control lathe is enlarged, a common numerical control lathe can also machine rectangular workpieces without using a higher-level machining center, the universality and the economy of the common lathe are enhanced, the utilization rate of the common lathe is improved, and the rectangular workpiece clamping tool is simple to operate, convenient to use, time-saving and labor-saving.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a rectangular workpiece clamping tool clamped on a three-jaw chuck.

Fig. 2 is a schematic structural view of a rectangular workpiece to be processed.

Fig. 3 is a schematic structural diagram of the rectangular workpiece clamping tool.

The symbols in the drawings illustrate:

1. clamping a disc; 2. clamping table; 3. clamping the groove; 4. rectangular workpieces to be processed; 5. a clamping mechanism; 6. a compressing mechanism; 7. clamping a bolt; 8. a lock nut; 9. a compression bolt; 10. compressing the fixed block; 11. a process hole; 12. a through hole; 13. a three-jaw chuck; 14. and (3) clamping jaws.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 and 2, the rectangular workpiece clamping tool is used for clamping a rectangular workpiece 4 to be processed, and can be used for turning internal threads of a through hole of the rectangular workpiece through a common numerical control lathe.

As shown in fig. 3, the rectangular workpiece clamping tool comprises a clamping disc 1, wherein a process hole 11 is formed in the middle of the clamping disc 1 along the front-back direction, and the process hole 11 plays a role in avoiding a cutter when the cutter of a lathe processes a through hole of a rectangular workpiece.

The middle part of the front end surface of the clamping disc 1 is provided with a clamping table 2 protruding forwards, and the clamping table 2 is rectangular; the middle part of the front end surface of the clamping table 2 is recessed backwards to form a rectangular clamping groove 3, and the shape of the clamping groove 3 is matched with that of a rectangular workpiece 4 to be processed. The clamping table 2 is provided with a fixing mechanism corresponding to the clamping groove 3 in position, and the fixing mechanism comprises a clamping mechanism 5 and a pressing mechanism 6 and is used for fixing the rectangular workpiece 4 to be processed.

The clamping table 2 extends from the left end of the clamping disc 1 to the right end of the clamping disc 1, the clamping groove 3 extends from the left end of the clamping table 2 to the right end of the clamping table 2, rectangular workpieces with different lengths can be placed, and the application range of the clamping tool is enlarged.

The upper part and the lower part of the clamping table 2 are symmetrically provided with a group of clamping mechanisms 5, and the group of clamping mechanisms 5 comprises two clamping mechanisms which are symmetrically arranged on the clamping table 2 left and right. Four compressing mechanisms 6 are arranged on the front end face of the clamping table 2, and the four compressing mechanisms are distributed at four corners of the front end face of the clamping table 2 in a central symmetry mode with the axis of the process hole 11 as the center.

The rectangular workpiece 4 to be processed is clamped and pressed through the adjusting clamping mechanism 5 and the pressing mechanism 6, and the rectangular workpiece 4 to be processed is fixed in the clamping groove 3, so that the rectangular workpiece 4 to be processed is ensured to be stable in position in the processing process, and the clamping mechanism is simple to operate and convenient to use.

Each clamping mechanism 5 comprises a clamping bolt 7 and a locking nut 8, and the locking nut 8 is sleeved on the upper portion of a screw rod of the clamping bolt 7. The upper portion, the lower part of clamping platform 2 all are provided with the screw hole of a number with clamping bolt 7 matched with, and the axis of screw hole is along the upper and lower direction, and clamping bolt 7's screw rod lower part inserts in the screw hole inside.

Each pressing mechanism 6 comprises a pressing bolt 9 and a pressing fixing block 10, a second threaded hole matched with the pressing bolt 9 is formed in one side of the pressing fixing block 10, the axis of the second threaded hole is along the front-back direction, and the pressing fixing block 10 is sleeved on the upper portion of a screw rod of the pressing bolt 9. The front end face of the clamping table 2 is provided with a third threaded hole matched with the compression bolt 9, the axis of the third threaded hole is along the front-back direction, and the lower portion of a screw rod of the compression bolt 9 is inserted into the third threaded hole.

The working method of the rectangular workpiece clamping tool comprises the following steps: placing the rectangular workpiece 4 to be processed in the clamping groove 3, and manually stirring the compression fixing block 10 to be positioned in front of the rectangular workpiece 4 to be processed; the pressing mechanism 6 is adjusted according to the thickness of the rectangular workpiece 4 to be processed, the pressing bolt 9 is twisted, and the pressing bolt 9 presses the rectangular workpiece 4 to be processed through the pressing fixed block 10; according to the width of the rectangular workpiece 4 to be processed, the clamping mechanism 5 is adjusted, the clamping bolt 7 is twisted to control the clamping bolt 7 to enter and exit in the first threaded hole, the clamping bolt 7 is twisted to lock the locking nut 8 after propping against the rectangular workpiece 4 to be processed, so that the required processing position of the workpiece is ensured to be stable, and the rectangular workpiece 4 to be processed is clamped on the rectangular workpiece clamping fixture;

and then the clamping disc 1 is arranged on a three-jaw chuck 13 of a numerical control lathe, the outer edge of the clamping disc 1 is clamped by jaws 14 of the three-jaw chuck 13, the clamping of the rectangular workpiece clamping tool on a common numerical control lathe is completed, and the processing of the internal thread of the through hole 12 of the rectangular workpiece 4 to be processed is carried out by the numerical control lathe.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A rectangle work piece clamping frock, its characterized in that: the clamping device comprises a clamping disc (1), wherein a clamping table (2) protruding forwards is arranged in the middle of the front end surface of the clamping disc (1), and the clamping table (2) is rectangular; the middle part of the front end surface of the clamping table (2) is recessed backwards to form a rectangular clamping groove (3); the clamping table (2) is provided with a fixing mechanism corresponding to the clamping groove (3).

2. The rectangular workpiece clamping fixture of claim 1, wherein: the fixing mechanism comprises a clamping mechanism (5) and a compressing mechanism (6), a group of clamping mechanisms (5) are symmetrically arranged on the upper portion and the lower portion of the clamping table (2), and a plurality of compressing mechanisms (6) are arranged on the front end face of the clamping table (2).

3. The rectangular workpiece clamping fixture of claim 2, wherein: each clamping mechanism (5) comprises a clamping bolt (7) and a locking nut (8), and the locking nut (8) is sleeved on the upper part of a screw rod of the clamping bolt (7); the upper portion, the lower part of clamping platform (2) all are provided with the screw hole of a number with clamp bolt (7) matched with, and the screw rod lower part of clamp bolt (7) inserts in the screw hole inside.

4. A rectangular workpiece clamping fixture as claimed in claim 3, wherein: each pressing mechanism (6) comprises a pressing bolt (9) and a pressing fixed block (10), a second threaded hole matched with the pressing bolt (9) is formed in one side of the pressing fixed block (10), and the pressing fixed block (10) is sleeved on the upper part of a screw rod of the pressing bolt (9);

the front end face of the clamping table (2) is provided with a third threaded hole matched with the compression bolt (9), and the lower part of a screw rod of the compression bolt (9) is inserted into the third threaded hole.

5. The rectangular workpiece clamping fixture of claim 4, wherein: and a process hole (11) is formed in the middle of the clamping disc (1) along the front-back direction.

6. The rectangular workpiece clamping fixture of claim 5, wherein: the clamping mechanism (5) comprises two clamping mechanisms which are symmetrically arranged on the clamping table (2) left and right.

7. The rectangular workpiece clamping fixture of claim 6, wherein: the four pressing mechanisms (6) are distributed at four corners of the front end surface of the clamping table (2) in a central symmetry mode by taking the axis of the process hole (11) as the center.

8. The rectangular workpiece clamping fixture of claim 1, wherein: the clamping table (2) extends from the left end of the clamping disc (1) to the right end of the clamping disc (1); the clamping groove (3) extends from the left end of the clamping table (2) to the right end of the clamping table (2).