CN215966358U - Cutter clamping device with adjustable cutter side relief angle and locking mechanism - Google Patents

Abstract

The utility model belongs to the field of auxiliary design of lathe cutters, and relates to a cutter clamping device with a locking mechanism and adjustable cutter side relief angles, which consists of a cutter handle and a cutter holder component and a cutter locking component; the knife handle and knife holder assembly comprises an elastic knife handle, a knife, a centering shaft sleeve, a knife holder and an angle dial; the cutter locking assembly comprises a protective cover, a ball pair ejector rod, a ball head pair pressing block and a V-shaped clamping block, the cutter locking assembly and the inner cavity of the cutter holder form a moving pair, and the protective cover is connected with the cutter holder through a compression screw. The ball pair ejector rod and the protecting cover are directly connected with the V-shaped clamping block through the ball head pair as a whole; the device realizes the turning processing of the large-lead spiral surface thin-wall part, prolongs the service life of the cutter, reduces the time for replacing the cutter and sharpening the cutter, and ensures the processing precision and the surface quality of the part.

Description

Cutter clamping device with adjustable cutter side relief angle and locking mechanism

Technical Field

The utility model belongs to a lathe tool auxiliary device for turning a large-lead spiral surface, and relates to a tool clamping device with an adjustable tool side relief angle and a locking mechanism, in particular to a novel tool clamping device with an adjustable tool side relief angle and a quick locking mechanism.

Background

On the premise of meeting the strength performance, the thin-wall part has the advantages of light weight, material saving, compact structure and the like. With the progress of design and processing technology, thin-walled parts are increasingly used. The thin-wall parts have poor rigidity, and are easy to deform and vibrate in the processing process. In order to meet the requirements of the parts processing, special process devices and specific processing parameters are selected. In the process of turning a large-lead screw surface thin-wall part, the problems exist, and the interference condition between a cutter and the part caused by a large lead angle of the screw surface also exists, and the interference schematic diagram is shown in an attached drawing 1. If the interference between the cutter and the part is avoided, the cutter angle is changed to a proper angle after the cutter angle is vice, but the strength and the rigidity of the cutter are greatly reduced, the cutter vibration phenomenon in the part turning process can occur, the surface quality of the part is poor, and the scrapped result of the cutter broken part can also be caused. When the cutter turns the lead spiral surface, the side relief angle of the cutter needs to be increased, the width of the cutter can be reduced, the strength and the rigidity of the cutter are further influenced, particularly when the parts are machined in a large batch, the service life of the cutter is short, and frequent cutter changing is needed in the machining process, so that the production efficiency of the parts is reduced, and the labor intensity of workers is increased.

The utility model aims to avoid the interference between the cutter and the part when a large-lead spiral surface is turned, and simultaneously enhance the rigidity and the strength of the cutter, thereby prolonging the service life of the cutter and improving the qualification rate of the machined part.

Disclosure of Invention

The purpose of the utility model is: the utility model provides a novel cutter auxiliary device of turning big helical pitch helicoid thin wall part, solves yielding material, weak rigid structure, big helical pitch helicoid and causes the cutter interference and the short problem of cutter life that the part turning in-process of great helix angle produced.

In order to solve the technical problem, the technical scheme of the utility model is as follows:

the cutter clamping device with the adjustable side relief angle and the locking mechanism consists of a cutter handle and a cutter holder component and a cutter locking component;

the handle blade holder subassembly includes: the tool is connected with a square hole of the elastic tool handle, and the elastic tool handle protrudes out of an excircle and is in clearance fit with an inner hole of the centering shaft sleeve to form a revolute pair; the two centering shaft sleeves are respectively in interference fit with holes on two sides of the tool apron, and the elastic tool shank protrudes out of the excircle and penetrates through the tool apron to be connected with the angle dial;

the tool locking assembly includes: the ball pair ejector rod and the protecting cover are integrated into a whole and are directly connected with the V-shaped clamping block through the ball pair, and then the ball pair pressing block and the ball pair pressing screw are used for locking;

the cutter locking assembly forms a sliding pair with the inner cavity of the cutter holder through the V-shaped clamping block, and the protecting cover is connected with the cutter holder through a compression screw.

The clearance of the revolute pair is 0.1-0.3 mm.

The size of the ball head auxiliary gap is 0.1-0.3 mm.

The cutter and the elastic cutter handle are pressed and fixed through a fastening bolt.

The elastic knife handle is connected with the angle dial through a positioning key.

Preferably, the ball pair top rod is connected with the protective cover through threads.

The utility model has the beneficial effects that: the utility model relates to a novel cutter auxiliary device which is capable of adjusting the size of the side relief angle of a cutter and is provided with a self-locking mechanism. The device can directly adjust the size of the side relief angle of the turning tool on the lathe tool magazine, and can lock quickly and efficiently after adjustment.

According to the novel device with the adjustable side relief angle of the cutter and the locking mechanism, the turning machining of the large-lead spiral surface thin-wall part is realized, the service life of the cutter is prolonged, the time for replacing the cutter and sharpening is shortened, and the machining precision and the surface quality of the part are ensured. The design provides a novel device which can adjust the size of the side relief angle of the cutter and is provided with a locking mechanism, effectively improves the processing quality and the processing efficiency of parts, reduces the labor intensity of operators, and effectively lowers the processing economic cost.

The side relief angle of the cutter is adjusted through the revolute pair, the cutter is quickly locked by adjusting the locking device, the problems that when a large-lead spiral surface is machined, the cutting angle of the cutter interferes with the spiral surface, and the rigidity of the cutter is weakened after the cutter is sharpened are solved, the time for sharpening and adjusting the cutter is saved, the production preparation efficiency is improved, and the service life and the machining efficiency of the cutter are improved.

The angle of the cutter is adjusted by a revolute pair formed by the elastic cutter handle, the centering shaft sleeve and the cutter holder, the angle of the cutter can be quickly and accurately adjusted by the angle dial and the determined adjustment angle, and the problems that the cutting angle of the cutter interferes with the spiral surface when a large-lead spiral surface is machined and the rigidity of the cutter is weakened after the cutter is sharpened are solved.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the embodiment of the present invention will be briefly explained. It is obvious that the drawings described below are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic view of the interference of a turning helicoid tool;

fig. 2 is a schematic structural view relating to a quick locking assembly of a cutter, wherein fig. 2(b) is a schematic structural view, and fig. 2(a) is a sectional view taken along a direction a-a in fig. 2 (b);

FIG. 3 is a schematic structural view of a tool holder assembly, wherein FIG. 3(a) is a right side view, FIG. 3(b) is a front view, and FIG. 3(c) is a left side view (taken along the axis of the tool holder);

FIG. 4 is a general view of the structure of the device of the present invention, wherein FIG. 4(a) is a front view (taken along a ball head rotation line), FIG. 4(b) is a top view, and FIG. 4(c) is a left side view;

FIG. 5 is an alignment view of the initial position of the cutter, wherein 5(a) is a front view and 5(b) is a side view

FIG. 6 is an enlarged view of I in FIG. 5;

wherein, 1 protecting cover, 2 ball pair ejector pins, 3 ball pair pressing blocks, 4V-shaped clamping blocks, 5 ball pair pressing screws, 6 elastic tool handles, 7 tools, 8 centering shaft sleeves, 9 tool holders, 10 angle dials, 11 positioning keys, 12 fastening screws and 13 pressing screws.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Features of various aspects of embodiments of the utility model will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details. The following description of the embodiments is merely intended to better understand the present invention by illustrating examples thereof. The present invention is not limited to any particular arrangement or method provided below, but rather covers all product structures, any modifications, alterations, etc. of the method covered without departing from the spirit of the utility model.

In the drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring the present invention. The general diagram of the structure diagram of the cutter clamping device with the locking mechanism and the adjustable cutter side relief angle is shown in fig. 4 and consists of a cutter handle and a cutter seat assembly and a cutter locking assembly;

the structure of the cutter locking component is shown in figure 2 and comprises: the ball joint auxiliary clamping device comprises a protecting cover 1, a ball joint auxiliary ejector rod 2, a ball joint auxiliary pressing block 3, a V-shaped clamping block 4 and a ball joint auxiliary compression screw 5, wherein the ball joint auxiliary ejector rod 2 is connected with the protecting cover 1 through threads, the ball joint auxiliary ejector rod 2 and the protecting cover 1 are taken as a whole and are directly connected with the 4V-shaped clamping block through a ball joint pair, then the ball joint auxiliary pressing block 3 and the ball joint auxiliary compression screw 5 are used for locking, and the size of a ball joint auxiliary gap is 0.1-0.3 mm; the locking device has the advantages of simple structure, reliable locking force, convenient and rapid adjustment and shortened production preparation time.

See fig. 3 for a structure of the knife handle and the knife holder assembly, including: the tool comprises an elastic tool handle 6, a tool 7, centering shaft sleeves 8, a tool apron 9, an angle dial 10, a positioning key 11 and a fastening screw 12, wherein the tool 7 is connected with a square hole of the elastic tool handle 6 and is tightly pressed and fixed through the fastening bolt 12, the protruding excircle of the elastic tool handle 6 is in clearance fit with the inner hole of the centering shaft sleeve 8, the clearance of a revolute pair is 0.1-0.3 mm, the two centering shaft sleeves 8 are respectively in interference fit with holes on two sides of the tool apron 9, and the protruding excircle of the elastic tool handle 6 passes through the tool apron 9 and is connected with the angle dial 10 through the positioning key 11;

the cutter locking component forms a sliding pair with the inner cavity of the cutter holder 9 through the V-shaped clamping block 4, and the protecting cover 1 is connected with the cutter holder 9 through a compression screw 13.

The using steps of the device are that firstly, the tool apron 9 is fixedly connected with a lathe tool disc, then the side relief angle of the tool is adjusted through the angle dial 10, the zero scale mark of the tool is aligned by using the gauge block, when the gauge block is horizontally and flatly attached to the angle dial 10, the alignment is obtained, and the alignment schematic diagram is shown in figure 5. After alignment, the zero scale line of the tool is estimated according to the helix angle of the helical surface, the angle theta is equal to the maximum helix angle of the helical surface-the tool side relief angle, and when the rotating part tool holder in the rotating pair rotates by the angle theta, the index of the angle dial is theta. The angle dial 10 is rotated, the ball pair ejector rod 2 is rapidly screwed after the angle is adjusted, the elastic knife handle 6 can be locked through the V-shaped clamping block 4, and then the elastic knife handle is rapidly locked.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.

Claims (6)

1. The cutter clamping device with the adjustable side relief angle and the locking mechanism consists of a cutter handle and a cutter holder component and a cutter locking component; the method is characterized in that:

the handle blade holder subassembly includes: the tool comprises an elastic tool handle (6), a tool (7), a centering shaft sleeve (8), a tool apron (9), an angle dial (10), a positioning key (11) and a fastening screw (12), wherein the tool (7) is connected with a square hole of the elastic tool handle (6), and a protruding excircle of the elastic tool handle (6) is in clearance fit with an inner hole of the centering shaft sleeve (8) to form a revolute pair; the two centering shaft sleeves (8) are respectively in interference fit with holes on two sides of the tool apron (9), and the elastic tool shank (6) protrudes out of the excircle and penetrates through the tool apron (9) to be connected with the angle dial (10);

the tool locking assembly includes: the ball joint pair clamping device comprises a protecting cover (1), a ball joint pair ejector rod (2), a ball joint pair pressing block (3), a V-shaped clamping block (4) and a ball joint pair compression screw (5), wherein the ball joint pair ejector rod (2) and the protecting cover (1) are directly connected with the V-shaped clamping block (4) through the ball joint pair as a whole, and then are locked by the ball joint pair pressing block (3) and the ball joint pair compression screw (5);

the cutter locking assembly forms a sliding pair with the inner cavity of the cutter holder (9) through the V-shaped clamping block (4), and the protecting cover (1) is connected with the cutter holder (9) through a compression screw (13).

2. The tool holding apparatus of claim 1, wherein: the clearance of the revolute pair is 0.1-0.3 mm.

3. The tool holding apparatus of claim 1, wherein: the size of the ball head auxiliary gap is 0.1-0.3 mm.

4. The tool holding apparatus of claim 1, wherein: the cutter (7) and the elastic cutter handle (6) are pressed and fixed through a fastening screw (12).

5. The tool holding apparatus of claim 1, wherein: the elastic knife handle (6) is connected with the angle dial (10) through a positioning key (11).

6. The tool holding apparatus of claim 1, wherein: the ball pair ejector rod (2) is connected with the protective cover (1) through threads.

Images