CN210909146U

CN210909146U - Boxboard through hole machining clamp suitable for lathe

Info

Publication number: CN210909146U
Application number: CN201921704376.5U
Authority: CN
Inventors: 吕清旭
Original assignee: SICHUAN HUAQING MACHINERY CO Ltd
Current assignee: Chongqing Jianshe Industry Group Co Ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-07-03
Anticipated expiration: 2029-10-12

Abstract

The utility model belongs to the technical field of through hole machining tool fixtures, and discloses a boxboard through hole machining fixture suitable for a lathe, which comprises a connecting disc connected with a chuck seat of the lathe, wherein a rotating chuck is rotatably arranged on the connecting disc through a rotating shaft, the rotating shaft is not coaxial with the hole opening direction of the lathe, a dividing handle shaft for fixing and limiting the rotation of the rotating chuck at the position opposite to the connecting disc is arranged on the rotating chuck, a positioning disc for positioning a part to be machined is arranged on the rotating chuck, and a buckle structure for fixing the part to be machined is arranged on the rotating chuck, the buckle structure passes through the positioning disc to press and fix the part to be machined on the positioning disc, so that one-time forming machining of two plate material products with specific shapes can be completed on the same lathe, the time is saved, the cost is saved, the operation is simple and convenient, the installation is, two parts can be processed without replacing the tool.

Description

Boxboard through hole machining clamp suitable for lathe

Technical Field

The utility model belongs to the technical field of through-hole machining frock clamp, concretely relates to case board through-hole machining anchor clamps that are applicable to the lathe as processing two kinds of left boxboards of gearbox.

Background

At present, the processing of a plate through hole is mainly finished by blanking, the section of a blanking piece consists of a fillet belt, a shearing surface, a fracture belt and blanking burrs, the size of a gap between a concave die and a convex die, the stamping force and the stamping speed have great influence on the quality of the section and the size change of the blanked blanking piece, the section size of the blanked blanking piece is related to the rolling direction, the material and the thickness of the blanking piece, and the blanking piece needs further milling processing to ensure the surface quality and the size precision of the processed surface.

Although the punching time is short, the processing efficiency is high, the punching cannot be finished at one time, and for parts with irregular shapes, the punching die is not only required to be designed, but also a tool is required to be independently designed for further processing, so that the processing process is more complicated, the processing time is longer, and the efficiency is lower.

In the prior art, the utility model discloses a positioning fixture for machining a hub inner hole, which is published under the publication number CN203471392U, 8/12/2014 and named as "positioning fixture for machining a hub inner hole", and comprises a positioning element and a clamping element, wherein the positioning element is a base provided with a positioning disc at one end, a reinforcing rib is arranged between the base and the positioning disc, and the base is mounted on a machine tool through a bolt; the clamping element is an angle iron, a screw hole is formed in the angle iron, a supporting structure at one end of the angle iron is in contact with the positioning disc, a positioning surface perpendicular to the supporting structure is in contact with the lower end surface of the hub, and the hub is locked on the positioning disc through a bolt. The utility model discloses simple structure, the location is reliable, can guarantee product quality and productivity ratio in the use, realizes installing rapidly, conveniently, safely and dismantles the work piece, makes the finished piece can be better get into accurate position, reduces the time that the manual clamp pressed from both sides the alignment work piece, improves workman's working condition, for enterprise reduction product cost.

However, this solution is designed for processing the inner hole of the hub, and although a good positioning and fixing method is provided, it needs to be implemented based on the rotation characteristic of the fixed shape of the hub circle, and is not suitable for multiple times of drilling holes in a single fixing of a general plate.

Disclosure of Invention

The utility model aims to solve the problem that still need the inconvenience that secondary operation brought after overcoming the blanking, provide one kind and can accomplish the one-time contour machining of two kinds of specific shape panel material products on same platform lathe, save time practices thrift the cost, and is easy and simple to handle, simple to operate, the practicality is strong, need not to change the frock and can process two kinds of parts.

The utility model discloses a case board through-hole adds clamping apparatus suitable for lathe, its characterized in that: the machine tool chuck comprises a connecting disc used for being connected with a machine tool chuck seat, wherein a rotating chuck is rotatably arranged on the connecting disc through a rotating shaft, the rotating shaft is not coaxial with the hole opening direction of the machine tool, an indexing handle shaft used for fixing and limiting the rotating chuck to rotate relative to the connecting disc is arranged on the rotating chuck, a positioning disc used for positioning a part to be machined is arranged on the rotating chuck, and a buckle structure used for fixing the part to be machined penetrates through the positioning disc to press and fix the part to be machined on the positioning disc; when the positioning device is used, the connecting disc is connected with a chuck seat of a machine tool, the rotating disc is fixedly connected with a part to be processed through the indexing handle shaft and the connecting disc with the buckling structures, the part to be processed is fixed in the positioning disc and is pressed by the buckling structures, and the positioning datum of the positioning disc is determined according to the outer contour dimension design of the part to be processed and belongs to a replaceable part; considering the processing limitation of a common numerical control lathe, when the clamp is used, a first hole of a processed part is concentric with a main shaft in the processing process; when another hole is processed, the buckle structure and the indexing handle are firstly loosened, the rotating disc and the positioning disc are rotated by 180 degrees, the rotating center is the middle point of the connecting line of the two processed inner holes, the other hole to be processed is concentric with the main shaft, namely, the two inner holes are processed by one-time clamping, and the positioning error caused by repeated clamping of the processed part is avoided.

Preferably, buckle structure is rotatory buckle, including rotatory cylinder and the spacing card of setting in rotatory cylinder top, spacing card rotates along with rotatory cylinder and gets into or leaves the card and end the position and realize fixing and separate solid, adopts rotatory structure, the quick dismouting of being convenient for to the position relatively fixed of buckle guarantees the position precision that punches.

Furthermore, the rotating cylinder comprises an upright post and a cylindrical rotating sleeve, wherein the bottom of the upright post is used for fixing, the cylindrical rotating sleeve is provided with a tension spring and can freely rotate and is sleeved on the upright post, and the limiting clamp is arranged at the top of the rotating sleeve; the extension spring is used for the restriction rotate the cover with the direct promotion distance of stand, the extension spring is held the stand promptly and is rotated the cover, guarantees to rotate the cover and can have the space that can promote in vertical direction and be convenient for the operation when fixed, and the pulling force of extension spring can be guaranteed to exert a pressure guarantee fixed effect by spacing device simultaneously.

Preferably, the buckle structure on the rotating chuck, its stand is fixed to be set up in the rotating chuck quotation, offer the confession on the positioning disk the trompil that buckle structure and graduation handle axle on the rotating chuck freely passed, the positioning disk is as the positioning device who directly accepts the part by processing, can adjust and change different design size and adapt to different processing requirements, and the trompil that the setting supplies buckle structure and graduation handle axle to freely pass avoids producing the influence to the location is fixed.

And in order to better inject in the punching process the position of the rotating chuck is prevented from rotating to influence the punching effect, the connecting disc is provided with a plurality of buckle structures used for limiting the rotation of the rotating chuck, and the buckle structures correspond to the rotating chuck.

Preferably, for the characteristics that accord with the processing of punching, connection pad, rotating chuck and positioning disk are the circular type dish, just the centre of a circle and the lathe chuck seat centre of a circle of connection pad align, rotating chuck's rotation center with the connection pad decentraction, and rotating chuck and positioning disk are concentric, are processed part fixed positioning and are in it treats trompil position and the trompil position of lathe aligns when on the positioning disk, can begin to process first hole after the installation is accomplished promptly, and direct rotation can be with the processing position alignment in second hole after first hole processing is accomplished, and concrete size can be realized through the size of changing the positioning disk, as long as during the installation, set up the centre of a circle of positioning disk in the centre of two processing holes can.

Further, as described above, the mounting position of the rotating chuck and other fixing devices is not concentric with the connecting disc, i.e., there is a deviation on the circular surface, and it is inevitable to generate vibration to affect the processing precision due to the cheap center of gravity during the rotation processing.

Namely, compare in current processing technology, the utility model provides a this kind of technical scheme realizes the disposable processing method of two holes of specific shape panel part, has avoided the design positioning error of two kinds of positioning die between blanking and the milling, practices thrift the cost, save time, and is easy and simple to handle, and machining efficiency is higher.

Drawings

The foregoing and following detailed description of the invention will be apparent when read in conjunction with the following drawings, in which:

FIG. 1 is a schematic view of an overall installation structure of a preferred embodiment of the present invention;

fig. 2 is a schematic view of a mounting structure of a rotating chuck according to a preferred embodiment of the present invention;

fig. 3 is a schematic view of a positioning plate mounting structure according to a preferred embodiment of the present invention;

in the figure:

1. a connecting disc; 2. rotating the chuck; 3. a balancing weight; 4. positioning a plate; 5. a buckle structure; 6. a part to be machined; 7. an index handle shaft.

Detailed Description

The technical solution for achieving the objectives of the present invention will be further described by using several specific examples, and it should be noted that the technical solution claimed in the present invention includes, but is not limited to, the following examples.

Example 1

As a most basic embodiment of the present invention, as shown in fig. 1 to 3, the present embodiment discloses a boxboard through-hole machining fixture suitable for a lathe, including a connecting pad 1 for connecting with a chuck seat of a machine tool, a rotating chuck 2 is rotatably disposed on the connecting pad 1 through a rotating shaft, and the rotating shaft is not coaxial with the hole opening direction of the machine tool, an indexing handle shaft 7 for fixing and limiting the rotation of the rotating chuck 2 relative to the connecting pad 1 is disposed on the rotating chuck 2, a positioning plate 4 for positioning a part 6 to be machined is disposed on the rotating chuck 2, and a buckle structure 5 for fixing the part 6 to be machined, wherein the buckle structure 5 penetrates through the positioning plate 4 to press the part 6 to be machined to be fixed on the positioning plate 4; when the tool is used, the connecting disc 1 is connected with a chuck seat of a machine tool, the rotating disc is fixedly connected with a part to be processed 6 through the indexing handle shaft 7 and the connecting disc 1 of the buckle structures 5, the part to be processed 6 is fixed in the positioning disc 4 and is pressed by the buckle structures 5, and the positioning reference of the positioning disc 4 is determined according to the outer contour dimension design of the part to be processed 6 and belongs to a replaceable part; considering the processing limitation of a common numerical control lathe, when the fixture is used, the first hole of the processed part 6 is concentric with the main shaft in the processing process; when another hole is processed, the buckle structure 5 and the indexing handle are firstly loosened, the rotating disc and the positioning disc 4 are rotated by 180 degrees, the rotating center is the middle point of the connecting line of the two processed inner holes, the other hole to be processed is concentric with the main shaft, namely, the two inner holes are processed by one-time clamping, and the positioning error caused by repeated clamping of the processed part 6 is avoided.

The technical scheme realizes the one-time processing method of the two inner holes of the plate part with the specific shape, avoids the design positioning errors of two positioning dies between blanking and milling, saves cost and time, is simple and convenient to operate, and has higher processing efficiency.

Example 2

As a preferred embodiment, on the basis of the technical scheme of above-mentioned embodiment 1, preferably, buckle structure 5 is rotatory buckle, including rotatory cylinder and the spacing card of setting in rotatory cylinder top, spacing card gets into or leaves along with the rotation of rotatory cylinder and blocks the position and realize fixing and separate solid, adopts rotatory structure, the quick dismouting of being convenient for to the position relatively fixed of buckle guarantees the position precision that punches.

Preferably, the buckle structure 5 on the rotating chuck 2, its stand is fixed to be set up in rotating chuck 2 quotation, offer on the positioning disk 4 and supply the trompil that buckle structure 5 and index handle axle 7 on the rotating chuck 2 freely pass, positioning disk 4 is as the positioner who directly accepts the part 6 being processed, can adjust and change different design size and adapt to different processing requirements, sets up the trompil that supplies buckle structure 5 and index handle axle 7 to freely pass and avoids producing the influence to the location is fixed.

And in order to better inject in the punching process the position of the rotating chuck 2 is prevented from rotating to influence the punching effect, the connecting disc 1 is provided with a plurality of buckle structures 5 for limiting the rotation of the rotating chuck 2, and the buckle structures correspond to the rotating chuck 2.

Preferably, for the characteristics that accord with the processing of punching, as shown in fig. 2 and 3, connection pad 1, rotating chuck 2 and positioning disk 4 are the circular disk, just the centre of a circle of connection pad 1 aligns with the lathe chuck seat centre of a circle, rotating chuck 2's rotation center with connection pad 1 is decentraction, and rotating chuck 2 and positioning disk 4 are concentric, and it treats trompil position and aligns with the trompil position of lathe when being processed part 6 fixed positioning on positioning disk 4, can begin to process first hole after the installation is accomplished promptly, and direct rotation can align the processing position in second hole after first hole processing is accomplished, and specific size can be realized through the size of changing positioning disk 4, as long as during the installation, with the centre of a circle setting of positioning disk 4 in the centre of two processing holes can.

Further, as described above, the mounting position of the fixing device such as the rotating chuck 2 is not concentric with the connecting disc 1, that is, there is a deviation on the circular surface, and it is inevitable to generate vibration to affect the processing precision due to the cheap center of gravity during the rotation processing, in order to avoid this, the connecting disc 1 is also detachably provided with a plurality of balancing weights 3 for balancing the weight, and the number and the mounting position can be adjusted in real time.

Claims

1. Boxboard through-hole adds clamping apparatus suitable for lathe, its characterized in that: including connection pad (1) that is used for being connected with lathe chuck seat, be provided with through the axis of rotation is rotatable on connection pad (1) and rotate chuck (2), just the trompil direction disalignment of axis of rotation and lathe, be provided with on rotating chuck (2) and be used for rotating indexing handle axle (7) that chuck (2) is rotatory with connection pad (1) relative position fixed restriction to and set up on rotating chuck (2) and be used for going on positioning disk (4) fixed a position by processing part (6) and be used for fixed buckle structure (5) by processing part (6), buckle structure (5) pass positioning disk (4) will be pushed down by processing part (6) and fix on positioning disk (4).

2. The jig for machining a through hole of a box plate adapted to a lathe according to claim 1, wherein: the buckle structure (5) is a rotary buckle and comprises a rotary cylinder and a limiting clamp arranged at the top of the rotary cylinder, and the limiting clamp enters or leaves a clamping position along with the rotation of the rotary cylinder to realize fixation and de-fixation.

3. The jig for machining a through hole of a box plate adapted to a lathe according to claim 2, wherein: the rotating cylinder comprises an upright post and a cylindrical rotating sleeve, wherein the bottom of the upright post is used for fixing, the cylindrical rotating sleeve is provided with a tension spring and can freely rotate and is sleeved on the upright post, and the limiting clamp is arranged at the top of the rotating sleeve; the extension spring is used for limiting the direct lifting distance between the rotating sleeve and the upright post.

4. A boxboard through-hole machining jig suitable for a lathe according to claim 2 or 3, wherein: the rotary chuck is characterized in that a buckle structure (5) on the rotary chuck (2) is fixedly arranged on the surface of the rotary chuck (2), and a hole for the buckle structure (5) on the rotary chuck (2) and the indexing handle shaft (7) to freely pass through is formed in the positioning disc (4).

5. The jig for machining a through hole of a box plate adapted to a lathe according to claim 1, wherein: the connecting disc (1) is provided with a plurality of buckle structures (5) which are used for limiting the rotation of the rotating chuck (2) and correspond to the rotating chuck (2).

6. A boxboard through-hole machining jig suitable for a lathe according to claim 1 or 2, wherein: connection pad (1), rotating chuck (2) and positioning disk (4) are the circle type dish, just the centre of a circle and the lathe chuck seat centre of a circle of connection pad (1) align, rotating chuck's (2) the center of rotation with connection pad (1) decentraction, and rotating chuck (2) and positioning disk (4) are concentric, are in by processing part (6) fixed positioning it treats that the trompil position aligns with the trompil position of lathe when positioning disk (4) is last.

7. The jig for machining a through hole of a box plate adapted to a lathe according to claim 1, wherein: and a plurality of balancing weights (3) for balancing weight are also detachably arranged on the connecting disc (1).