阅读说明：本技术 可调高度的刀座结构及含此结构的快速找中心排刀架 (Height-adjustable tool apron structure and quick centering tool rest comprising same ) 是由 何兴举 于 2021-10-18 设计创作，主要内容包括：本发明提供一种可调高度的刀座结构及含此结构的快速找中心排刀架,所述刀座结构包括同步丝杆、两个锥度滑块、活动板和限位装置；所述同步丝杆两端对称设置有螺旋方向相反的螺纹,两块锥度滑块对称设置有倾斜顶面以及与同步丝杆两端螺纹相配合的螺孔,所述螺孔至少一个为通孔,同步丝杆与该通孔配合的一端设置有用于旋转同步丝杆的操作部；所述活动板顶面为刀具安装座,底面形状与两个锥度滑块匹配,与锥度滑块滑动配合；所述限位装置用于防止活动板相对于刀架平移和转动。本发明可以精细平稳的调整刀座高度。(The invention provides a height-adjustable tool apron structure and a quick centering tool rest comprising the same, wherein the tool apron structure comprises a synchronous screw rod, two taper slide blocks, a movable plate and a limiting device; the two ends of the synchronous screw rod are symmetrically provided with threads with opposite spiral directions, the two taper sliding blocks are symmetrically provided with inclined top surfaces and screw holes matched with the threads at the two ends of the synchronous screw rod, at least one of the screw holes is a through hole, and one end of the synchronous screw rod matched with the through hole is provided with an operation part for rotating the synchronous screw rod; the top surface of the movable plate is a cutter mounting seat, and the shape of the bottom surface of the movable plate is matched with the two taper sliding blocks and is in sliding fit with the taper sliding blocks; the limiting device is used for preventing the movable plate from translating and rotating relative to the tool rest. The invention can finely and stably adjust the height of the tool apron.)

1. The blade holder structure of adjustable height, its characterized in that: the tool apron structure comprises a synchronous screw rod (2), two taper sliding blocks (3), a movable plate (4) and a limiting device; threads with opposite spiral directions are symmetrically arranged at two ends of the synchronous screw rod (2), inclined top surfaces and screw holes matched with the threads at two ends of the synchronous screw rod (2) are symmetrically arranged on the two taper sliding blocks (3), at least one of the screw holes is a through hole, and an operation part for rotating the synchronous screw rod (2) is arranged at one end, matched with the through hole, of the synchronous screw rod (2); the top surface of the movable plate (4) is a cutter mounting seat, and the bottom surface of the movable plate is matched with the two taper sliding blocks (3) in shape and is in sliding fit with the taper sliding blocks (3); the limiting device is used for preventing the movable plate (4) from translating and rotating relative to the tool rest.

2. The adjustable height tool holder structure of claim 1 wherein: the limiting device comprises a fixed seat (1) arranged on a tool rest base, a groove/hole for accommodating and limiting the transverse movement of the synchronous screw rod (2) is formed in the bottom of the fixed seat (1), and a groove/hole which is matched with the top of the fixed seat (1) and limits the longitudinal movement of the movable plate (4) is formed in the middle of the bottom surface of the movable plate (4); the bottom surface of the movable plate (4) is provided with two convex ribs (9), and the top surfaces of the two taper sliders (3) are provided with guide grooves (10) matched with the convex ribs (9).

3. The adjustable height tool holder structure of claim 2, wherein: the tool apron structure further comprises a tension spring (5), tension spring mounting holes (12) are formed in corresponding positions of the fixed seat (1) and the movable plate (4), pin shafts (13) are arranged in the tension spring mounting holes (12) of the fixed seat (1) and the movable plate (4), and two ends of the tension spring (5) are connected with the pin shafts (13) in the tension spring mounting holes (12) of the fixed seat (1) and the movable plate (4) respectively.

4. The adjustable height tool holder structure of claim 1 wherein: the operation part of the synchronous screw rod is an inner hexagonal hole (7).

5. The adjustable height tool holder structure of claim 2, wherein: the lower portion of the fixed seat (1) is longitudinally provided with a U-shaped groove (8) matched with the synchronous screw rod (2), the width of the U-shaped groove (8) is matched with the diameter of the synchronous screw rod (2), and the middle of the bottom surface of the movable plate (4) is transversely provided with a groove (11) matched with the top of the fixed seat (1).

6. The adjustable height tool holder structure of claim 1 wherein: the limiting device is a plurality of pin shafts arranged on the tool rest base and in the movable plate (4).

7. The adjustable height tool holder structure of claim 1 wherein: the tool apron structure further comprises a scale plate, and the scale plate is arranged beside the movable plate (4).

8. A rapid centering tool rest comprising the tool rest structure of any one of claims 2, 3 and 5, wherein: the tool rest base (15) and the fixed seat (1) are provided with threaded holes at corresponding positions, the fixed seat (1) is fixed on the tool rest base (15) through a fixing screw (16), a baffle (17) is arranged between the tool rest base (15) and the movable plate (4), and an operation hole is formed at a corresponding position of the baffle (17) and the operation part of the synchronous screw rod (2).

9. The rapid centering gang tool holder of claim 8, wherein: the utility model discloses a tool rest base, including frame base (15), fly leaf (4), extension board (19) have been seted up to extension board (19) that the long border of tool rest base (15) is provided with baffle (17), extend downwards to the left and right sides of fly leaf (4), seted up the operation hole on the extension board (19) that correspond with synchronous lead screw (2) operating portion.

Technical Field

The invention relates to a numerical control machine tool, in particular to a tool rest of the numerical control machine tool.

Background

The tool post is a device for mounting a tool bit on a numerical control machine tool, when the numerical control machine tool is used for machining parts, the tool bit tip of the tool bit needs to be aligned to the central line of a main shaft of the machine tool, the tool bars of different tools are different in size, and the height of the tool bit is also different, so that the height of the tool bit needs to be adjusted. The height of a tool nose is usually adjusted by a mode of stacking gaskets with different thicknesses between a tool and a tool apron in the existing numerical control machine tool, the problem that the gasket with a proper height is difficult to find is often encountered by the mode, and when the tool nose is only required to be adjusted slightly as dozens of micrometers, the gasket is difficult to meet the requirements. Therefore, a numerically-controlled machine tool rest structure capable of finely and stably adjusting the height of the tool nose is urgently needed.

Disclosure of Invention

The invention aims to solve the technical problem of providing a height-adjustable tool apron structure and a tool rest which is provided with the tool apron structure and can quickly find the center.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a height-adjustable tool apron structure which comprises a synchronous screw rod, two taper sliding blocks, a movable plate and a limiting device. And threads with opposite spiral directions are symmetrically arranged at two ends of the synchronous screw rod. Two tapering slider symmetries set up, and is concrete, and the top surface symmetry of two tapering sliders is provided with the inclined plane, and one of them of two tapering sliders is provided with the screw with synchronous lead screw one end screw thread matched with, and another is provided with the screw with synchronous lead screw other end screw thread matched with. At least one of the two screw holes of the two taper sliding blocks is a through hole, and one end of the synchronous screw rod matched with the through hole is provided with an operation part for rotating the synchronous screw rod. The top surface of the movable plate is a cutter mounting seat, and the shape of the bottom surface of the movable plate is matched with the two taper sliding blocks and is in sliding fit with the taper sliding blocks. The limiting device is used for preventing the movable plate from translating and rotating relative to the tool rest.

In order to prevent the movable plate from translating and rotating relative to the tool holder, preferably, the limiting device may be a plurality of pins (not shown) disposed in the tool holder base and the movable plate; the movable plate is provided with a groove/hole which is matched with the top of the fixed seat and limits the longitudinal movement of the movable plate; the bottom surface of the movable plate is provided with two convex edges, and the top surfaces of the two taper sliders are provided with guide grooves matched with the convex edges.

Preferably, the tool apron structure further comprises a tension spring, tension spring mounting holes are formed in corresponding positions of the fixed seat and the movable plate, a pin shaft is arranged in each of the tension spring mounting holes of the fixed seat and the movable plate, and two ends of the tension spring are connected with the pin shafts in the tension spring mounting holes of the fixed seat and the movable plate respectively.

Preferably, the operating part of the synchronous screw rod is a hexagon socket.

Preferably, the lower portion of the fixed seat is longitudinally provided with a U-shaped groove matched with the synchronous screw rod, the width of the U-shaped groove is matched with the diameter of the synchronous screw rod, and the middle portion of the bottom surface of the movable plate is transversely provided with a groove matched with the top of the fixed seat.

Preferably, the tool apron structure further comprises a scale plate, and the scale plate is arranged beside the movable plate and used for recording the lifting height of the movable plate.

The invention also provides a quick centering tool rest, wherein a threaded hole is formed in the corresponding position of the tool rest base and the fixed seat, the fixed seat is fixed on the tool rest base through a fixing screw, a baffle is arranged between the tool rest base and the movable plate, and an operation hole is formed in the corresponding position of the baffle and the synchronous screw rod operation part. In the embodiment of the tool rest, the extending plates extending downwards from the left side and the right side of the movable plate have the same function as the baffle plate and are also the baffle plate.

The utility model discloses a synchronous lead screw operation portion, including the gang tool rest base, the fly leaf left and right sides extends two extension boards, has seted up the handle hole on the extension board that corresponds with synchronous lead screw operation portion.

Compared with the prior art, the invention has the beneficial effects that:

the taper sliding blocks which are symmetrically arranged are synchronously adjusted through the synchronous screw rod, so that the movable plate which is in sliding fit with the taper sliding blocks can be stably lifted, and the height of the cutter mounting seat can be finely and synchronously adjusted. The groove/hole for accommodating and limiting the transverse movement of the synchronous screw rod is formed in the bottom of the fixed seat, the groove/hole matched with the top of the fixed seat and limiting the longitudinal movement of the movable plate is formed in the middle of the bottom surface of the movable plate, and the guide grooves matched with the ribs are formed in the two ribs arranged on the bottom surface of the movable plate and the top surfaces of the two taper sliders, so that the movable plate does not translate and rotate during working, and the stability is improved. Through set up the extension spring between fixing base and fly leaf, can improve fly leaf and tapering slider complex compactness, reduce the clearance, further improve stability and precision. The tool rest with the tool apron structure can quickly find the center line of the machine tool spindle.

Drawings

The present invention is described in further detail below with reference to the attached drawings.

FIG. 1 is an exploded view of a tool holder;

FIG. 2 is a perspective view of a rapid centering tool rest;

FIG. 3 is a front view of the gang tool holder shown in FIG. 2;

FIG. 4 is a left side schematic view of the gang tool holder of FIG. 2;

FIG. 5 is an exploded view of the gang tool holder of FIG. 2;

FIG. 6 is a schematic cross-sectional view A-A of the blade array shown in FIG. 3;

FIG. 7 is a schematic cross-sectional view B-B of the blade array shown in FIG. 4;

fig. 8 is a schematic cross-sectional view C-C of the gang tool holder shown in fig. 3.

Description of reference numerals: 1. the device comprises a fixed seat, 2, a synchronous screw rod, 3, a taper slide block, 4, a movable plate, 5, a tension spring, 6, a screw hole, 7, an inner hexagonal hole, 8, a U-shaped groove, 9, a convex edge, 10, a guide groove, 11, a groove, 12, a tension spring mounting hole, 13, a pin shaft, 14, a tool setting post, 15, a tool setting post base, 16, a fixing screw, 17, a baffle, 18, a mounting groove, 19 and an extension plate.

Detailed Description

Example of tool holder structure

As shown in fig. 1, the present embodiment provides a height-adjustable tool holder structure, which includes a fixed seat 1, a synchronous screw rod 2, a taper slider 3, a movable plate 4 and a tension spring 5. And threads with opposite spiral directions are symmetrically arranged at two ends of the synchronous screw rod 2. The two taper sliding blocks 3 are symmetrically arranged. The top surfaces of the two taper slide blocks 3 are obliquely arranged, one of the two taper slide blocks 3 is provided with a screw hole matched with one end of the synchronous screw rod 2 in a threaded manner, and the other taper slide block is provided with a screw hole matched with the other end of the synchronous screw rod 2 in a threaded manner. At least one of two screw holes of the two taper slide blocks 3 is a through hole, and one end of the synchronous screw rod 2 matched with the through hole is provided with an operation part with an inner hexagonal hole 7 for rotating the synchronous screw rod 2. The fixing seat 1 is used for being fixedly connected with a tool rest, a U-shaped groove 8 matched with the synchronous screw rod 2 is longitudinally formed in the lower portion of the fixing seat 1, the synchronous screw rod 2 penetrates through the U-shaped groove 8, and two ends of the synchronous screw rod are respectively in threaded connection with a taper sliding block 3. The width of the U-shaped groove 8 is matched with the diameter of the synchronous screw rod 2, and the U-shaped groove 8 can limit the transverse movement of the synchronous screw rod 2. The top surface of the movable plate 4 is a cutter mounting seat, and the shape of the bottom surface of the movable plate is matched with the two taper sliders 3 and is in sliding fit with the taper sliders 3. The bottom surface of the movable plate 4 is provided with two convex edges 9, and the top surfaces of the two taper sliders 3 are provided with guide grooves 10 matched with the convex edges 9. The middle of the bottom surface of the movable plate 4 is transversely provided with a groove 11 matched with the top of the fixed seat 1, the movable plate 4 is arranged on the fixed seat 1 through the groove 11, and the groove 11 on the bottom surface of the movable plate 4 can limit the longitudinal movement of the movable plate 4.

The corresponding positions of the fixed seat 1 and the movable plate 4 are provided with tension spring mounting holes 12, the tension spring mounting holes 12 of the fixed seat 1 and the movable plate are provided with pin shafts 13, two ends of each tension spring 5 are connected with the pin shafts 13 in the tension spring mounting holes 12 of the fixed seat 1 and the movable plate 4 respectively, the tension springs 5 can improve the matching tightness of the movable plate 4 and the taper slide block 3, gaps are reduced, and the stability and the precision are further improved.

Preferably, the tool apron structure comprises a scale plate (not shown), and the scale plate is arranged beside the movable plate and used for recording the lifting height of the movable plate.

The tool apron structure of the embodiment can be used on tool rests such as tool rests and rotary tool rests.

Tool setting embodiment

As shown in fig. 2 to 8, the present embodiment is a quick centering tool rest 14 obtained by arranging the tool rest structure of the previous embodiment on an i-shaped tool rest. Specifically, threaded holes are formed in the corresponding positions of the I-shaped tool rest base 15 and the fixing seat 1, and the fixing seat 1 is fixed on the I-shaped tool rest base 15 through fixing screws 16. The front long edge and the rear long edge of the I-shaped gang tool holder 14 are further provided with baffle plates 17, two mounting grooves 18 are formed between the baffle plates 17 and the upright columns of the I-shaped gang tool holder 14, the two height-adjustable tool apron structures of the two embodiments are respectively mounted in the two mounting grooves 18, the width of the mounting grooves 18 is matched with that of the taper sliding block 3, and the transverse movement of the taper sliding block 3 can be further limited. The height of the baffle 17 is approximately equal to that of the movable plate 4, two extending plates 19 extend downwards from the left side and the right side of the movable plate 4, the extending plates 19 have the same function with the baffle 17 and are used for beautifying and preventing part of iron scraps, iron slag, dust and other sundries from entering the tool rest, the extending plates 19 approximately extend to the bottom of the mounting groove 18, and the extending plates 19 corresponding to the operation part of the synchronous screw rod 2 are provided with operation holes so as to facilitate the rotation of the synchronous screw rod 2. The protection of the core tool apron structure of the embodiment is formed by surrounding a baffle 17 arranged at the long edge of the I-shaped tool rest base 15, an upright post of the I-shaped tool rest and an extending plate 19 extending left and right downwards from the movable plate 4, and can be adjusted by a person skilled in the art according to needs.