CN210280763U

CN210280763U - Numerical control lathe boring grab

Info

Publication number: CN210280763U
Application number: CN201921287242.8U
Authority: CN
Inventors: 刘劲松
Original assignee: Xiangyang Vocational and Technical College
Current assignee: Xiangyang Vocational and Technical College
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2020-04-10
Anticipated expiration: 2029-08-09

Abstract

The utility model discloses a numerical control lathe boring grab relates to the technical field of machining device, numerical control lathe boring grab includes three-jaw chuck and knife rest, three-jaw chuck joint has the work piece, knife rest threaded connection has the knife rest screw, knife rest screw bottom supports and leans on the boring grab piece, boring grab piece is kept away from knife rest screw one side and is pasted and lean on the knife rest inboard surface, boring grab piece middle part is connected with the drill bit, boring grab piece is kept away from knife rest one side and is connected with a plurality of housing screws, the utility model discloses, open narrow logical groove along horizontal central line in the round hole left side of anchor clamps dress drill bit, there is the screw hole in the processing of narrow groove lower half, after passing the unthreaded hole dress with the bolt, the upper half arc surface and the drill bit of round hole lean on elastic clamping through the arc surface contact, area is big, and clamping stability is good; because the compression screw is arranged on the side surface of the drill bit and is not arranged right above the drill bit, the compression screw is far away from the cutter rest screw, the space is large, and the installation is convenient.

Description

Numerical control lathe boring grab

Technical Field

The utility model relates to a machining device technical field especially relates to a numerical control lathe boring grab.

Background

Generally, drilling on a numerically controlled lathe is to install a drill bit on a tailstock for manual drilling, and the machining efficiency is low. In order to solve the problem, a numerical control lathe drilling clamp which is arranged on a numerical control lathe tool rest, does not need to be aligned and is equal in height and tightly presses a drill bit from the upper side of a round hole for accommodating the drill bit is arranged on the market at present. The clamp is characterized in that a threaded hole is machined in the upper edge of the round hole, the bolt is arranged in the threaded hole and is pressed by the contact of the bottom plane of the bolt and the upper outer circular surface of the drill bit, and the contact area is small. Meanwhile, the compression screw is arranged right above the drill bit, and when the clamp is connected with the tool rest through the tool rest screw, the tool rest screw is closer to the compression screw, so that the installation is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an install on the knife rest and need not carry out automatic drilling such as alignment height, press from both sides tight numerical control lathe boring grab from the side of drill bit.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a numerical control lathe boring grab, includes three-jaw chuck and knife rest, three-jaw chuck joint has the work piece, knife rest threaded connection has the knife rest screw, knife rest screw bottom supports and leans on the boring grab piece, the boring grab piece is kept away from knife rest screw one side and is pasted and lean on the knife rest inboard surface, boring grab piece middle part is connected with the drill bit, the boring grab piece is kept away from knife rest one side and is connected with a plurality of housing screw.

Preferably, a small step is arranged at one end, close to the tool rest, of the drilling clamp block, and two sides of the small step are respectively attached to the bottom end of the tool rest screw and the inner side surface of the tool rest.

Preferably, the round hole has been seted up at boring grab piece middle part, round hole clearance fit has the drill bit, boring grab piece is kept away from little step one end and is run through and seted up the narrow groove, the narrow groove intercommunication has round hole one side, boring grab piece is located the vertical a plurality of screws that have seted up of narrow groove one end, screw threaded connection has housing screw.

Preferably, the round hole is divided into an upper semicircular hole and a lower semicircular hole, the upper semicircular hole can clamp the drill bit through downward pressing, the lower semicircular hole is in clearance fit with the drill bit, and the central line of the lower semicircular hole is parallel to the central line of a workpiece clamped by the numerically controlled lathe and is equal to the bottom surface of the tool rest in height, namely equal in height.

Preferably, the side, far away from the small step, of the upper semicircular hole and the lower semicircular hole is communicated with a narrow groove along a horizontal center line.

Preferably, the screw hole is divided into an upper smooth hole and a lower threaded hole by a narrow groove, the smooth hole is in clearance fit with a compression screw, and the threaded hole is in threaded connection with the compression screw.

Compared with the prior art, the utility model discloses possess following advantage:

1. the utility model discloses, it has narrow logical groove to open along horizontal central line in the round hole left side of anchor clamps dress drill bit, and at the processing of narrow groove lower half portion threaded hole, pass the unthreaded hole dress with the bolt behind the screw hole, the last semicircular arc face and the drill bit of round hole pass through the arc surface contact and lean on elastic clamping, and area of contact is big, and the tight stability of clamp is good.

2. The utility model discloses, because housing screw dress is in the drill bit side, not directly over the drill bit, far away from knife rest screw, the space is big, simple to operate.

3. The utility model discloses, the lower semicircle orifice of anchor clamps dress drill bit plays the positioning action, makes the round hole central line of dress drill bit and the work piece central line of numerical control lathe clamping parallel during the design to height such as equal height promptly of knife rest bottom surface altitude distance. Therefore, the drill bit does not need to be aligned and the like when in use, and the inner hole is automatically processed by controlling the drill bit through a numerical control processing program, so that the production efficiency is improved.

Drawings

Fig. 1 is a schematic structural view and a partial sectional view of a workpiece of a numerical control lathe drilling jig provided by the present invention;

fig. 2 is a sectional view of a drilling jig block of the numerical control lathe drilling jig provided by the utility model;

fig. 3 is the utility model provides a top view of numerical control lathe boring grab.

In the figure: 1 three-jaw chuck, 2 workpieces, 3 tool rests, 4 drilling clamp blocks, 41 small steps, 42 round holes, 421 upper semi-round holes, 422 lower semi-round holes, 43 narrow grooves, 44 screw holes, 441 smooth holes, 442 threaded holes, 5 drill bits, 6 compression screws and 7 tool rest screws.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the numerical control lathe drilling fixture comprises a three-jaw chuck 1 and a tool rest 3, a workpiece 2 is clamped and connected to the three-jaw chuck 1, the tool rest 3 is in threaded connection with a tool rest screw 7, and the bottom end of the tool rest screw 7 abuts against a drilling fixture block 4.

The drilling clamp block 4 is close to one end of the tool rest 3 and is provided with a small step 41, two sides of the small step 41 are respectively attached to the bottom end of the tool rest screw 7 and the inner side surface of the tool rest 3, the small step 41 can be compressed by rotating the tool rest screw 7, and therefore the drilling clamp block 4 is fixed.

The middle part of the drilling clamp block 4 is provided with a round hole 42, the round hole 42 is divided into an upper semi-round hole 421 and a lower semi-round hole 422, the lower semi-round hole 422 is in clearance fit with a drill bit 5, the upper semi-round hole 421 can press and clamp the drill bit 5 downwards, the central line of the lower semi-round hole 422 is parallel to the central line of a workpiece 2 clamped by a numerical control lathe, and the heights are equal when reaching the bottom surface of the tool rest 3, so that the heights are equal when the drilling clamp block is used, the numerical control machining program is used for controlling the drill bit 5 to automatically machine an inner hole, the drilling depth is consistent in.

Last semicircle hole 421 and lower semicircle orifice 422 keep away from little step one side and have the slot 43 along horizontal center line intercommunication, boring grab piece 4 is located the vertical a plurality of screw holes 44 of having seted up of slot 43 one end, screw hole 44 is divided into upper portion smooth hole 441 and lower part screw hole 442 by slot 43, smooth hole 441 clearance fit compression screw 6, screw hole 442 threaded connection has compression screw 6, rotatory compression screw 6, can make the slot 43 clearance narrow, thereby make the first semicircle hole 421 semicircle face of round hole 42 and drill bit 5 lean on elastic clamping through the arc face contact, area of contact is big, it is good to press from both sides tight stability.

The working principle of the utility model is as follows:

specifically, the drill bit 5 is installed in the circular hole 42 in the drilling clamp block 4 and is matched with a hole shaft, the left side of the circular hole 42 is communicated with the narrow groove 43 along the horizontal center line, the threaded hole 442 is machined in the lower half part of the narrow groove 43, the compression screw 6 penetrates through the smooth hole 441 and is in threaded connection with the threaded hole 442, the gap of the narrow groove 43 can be narrowed by rotating the compression screw 6, and therefore the semicircular arc surface of the upper half circular hole 421 of the circular hole 42 and the drill bit 5 are in elastic clamping through arc surface contact, the contact area is large, and the clamping stability is good.

Meanwhile, because the compression screw 6 is arranged on the side surface of the drill bit 5 and is not arranged right above the drill bit 5, when the drilling clamp block 4 and the tool rest 3 are arranged through the tool rest screw 7, the tool rest screw 7 is far away from the compression screw 6, the space is large, and the installation is convenient.

The lower semicircular hole 422 of the drill bit 5 arranged on the drilling clamp block 4 plays a role in positioning, and the center line of the circular hole 422 of the lower semicircular hole 422 of the drill bit 5 is parallel to the center line of the workpiece 2 clamped by the numerical control lathe during design, and the height distances from the center line to the bottom surface of the tool rest 3 are equal, namely the height is equal. When the numerical control drilling machine is used, the drill bit 5 is controlled to automatically process the inner hole without alignment and the like, the drilling depth is consistent, the quality is stable, the labor intensity is reduced, and the production efficiency is improved.

In the present invention, unless otherwise expressly stated or limited, the terms "sliding", "rotating", "fixed", "provided", and the like are to be understood in a broad sense, e.g. as welded connections, as bolted connections, or as integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a numerical control lathe boring grab, includes three-jaw chuck (1) and knife rest (3), three-jaw chuck (1) joint has work piece (2), its characterized in that, knife rest (3) threaded connection has knife rest screw (7), knife rest screw (7) bottom is supported and is leaned on boring grab piece (4), boring grab piece (4) are kept away from knife rest screw (7) one side and are leaned on knife rest (3) inboard surface, boring grab piece (4) middle part is connected with drill bit (5), boring grab piece (4) are kept away from knife rest (3) one side and are connected with a plurality of housing screw (6).

2. The numerical control lathe drilling clamp according to claim 1, characterized in that a small step (41) is formed at one end of the drilling clamp block (4) close to the tool rest (3), and two sides of the small step (41) are respectively abutted against the bottom end of the tool rest screw (7) and the inner side surface of the tool rest (3).

3. The numerical control lathe drilling clamp according to claim 2, wherein a round hole (42) is formed in the middle of the drilling clamp block (4), a drill bit (5) is in clearance fit in the round hole (42), a narrow groove (43) is formed in one end, away from the small step (41), of the drilling clamp block (4) in a penetrating mode, the narrow groove (43) is communicated with one side of the round hole (42), a plurality of screw holes (44) are vertically formed in one end, located at the narrow groove (43), of the drilling clamp block (4), and the screw holes (44) are in threaded connection with compression screws (6).

4. The numerical control lathe drilling fixture as claimed in claim 3, characterized in that the round hole (42) is divided into an upper semicircular hole (421) and a lower semicircular hole (422), the upper semicircular hole (421) can clamp the drill (5) by pressing downwards, the drill (5) is in clearance fit with the lower semicircular hole (422), and the central line of the lower semicircular hole (422) is parallel to the central line of the workpiece (2) clamped by the numerical control lathe and is equal in height, namely equal in height, to the bottom surface of the tool rest (3).

5. The numerical control lathe drilling clamp according to claim 4, characterized in that a narrow groove (43) is communicated with one side, away from the small step, of the upper semicircular hole (421) and the lower semicircular hole (422) along a horizontal center line.

6. A numerical control lathe boring jig according to claim 5, characterized in that the screw hole (44) is divided into an upper smooth hole (441) and a lower threaded hole (442) by a narrow groove (43), the smooth hole (441) is clearance fitted with a compression screw (6), and the threaded hole (442) is threadedly connected with the compression screw (6).