阅读说明：本技术 一种无屑切割机用进刀机构 (Feed mechanism for chipless cutting machine ) 是由 马军 于 2021-07-16 设计创作，主要内容包括：本发明涉及切割机生产技术领域,具体为一种无屑切割机用进刀机构,包括刀架、伺服电机、精密转向器、轴承座、轴承、滚珠式直线导轨、滚珠式线性滑轨和切割刀,所述伺服电机与进刀螺杆呈九十度排布,所述进刀螺杆的外表面开设有两段同向螺纹,两段螺纹相邻,远离精密转向器一侧的螺纹长度是靠近精密转向器一侧螺纹长度的两倍,且靠近精密转向器一侧螺纹直径大于远离精密转向器一侧的螺纹直径,远离精密转向器一侧的螺纹螺距是靠近精密转向器一侧螺纹螺距的两倍,所述进刀螺杆的外表面远离第一滑块的一侧套设有第二滑块。本发明通过改变驱动方式,更利于精确控制,并在进刀深度不变的同时缩减进刀机构的驱动行程。(The invention relates to the technical field of cutting machine production, in particular to a feed mechanism for a chipless cutting machine, which comprises a tool rest, a servo motor, a precision steering gear, a bearing seat, a bearing, a ball type linear guide rail, a ball type linear slide rail and a cutting knife, wherein the servo motor and a feed screw are arranged at ninety degrees, two sections of threads in the same direction are arranged on the outer surface of the feed screw, the two sections of threads are adjacent, the length of the thread on one side far away from the precision steering gear is twice as long as that of the thread on one side close to the precision steering gear, the diameter of the thread on one side close to the precision steering gear is larger than that of the thread on one side far away from the precision steering gear, the pitch of the thread on one side far away from the precision steering gear is twice as long as that of the thread on one side close to the precision steering gear, and a second sliding block is sleeved on one side of the outer surface of the feed screw far away from a first sliding block. The invention is more beneficial to accurate control by changing the driving mode, and reduces the driving stroke of the feed mechanism while the feed depth is not changed.)

1. The utility model provides a feed mechanism for chipless cutting machine, includes knife rest (1), servo motor (2), accurate steering gear (3), bearing frame (4), bearing (5), ball formula linear guide (12), ball formula linear slide rail (13) and cutting knife (14), the external surface mounting of knife rest (1) has bearing frame (4), feed screw rod (6) rotate with bearing frame (4) through bearing (5) and are connected, the surface swing joint of feed screw rod (6) has first slider (7), and the top of first slider (7) is fixed with slide (9), be provided with core (10) on slide (9), on cutting knife (14) are fixed in core (10), its characterized in that: one side of the outer surface of the tool rest (1), which is close to the bearing seat (4), is fixed with a precision steering gear (3), one end of the precision steering gear (3) is fixedly connected with a servo motor (2) through a bolt, the output end of the servo motor (2) is linked with the input end of the precision steering gear (3) through a coupler, the servo motor (2) and a feed screw (6) are arranged at ninety degrees, the outer surface of the feed screw (6) is provided with two sections of homodromous threads, the two sections of threads are adjacent, the length of the thread far away from one side of the precision steering gear (3) is twice as long as that of the thread near one side of the precision steering gear (3), the diameter of the thread near one side of the precision steering gear (3) is larger than that of the thread far away from one side of the precision steering gear (3), and the pitch of the thread far away from one side of the precision steering gear (3) is twice as that of the thread near one side of the precision steering gear (3), one side cover that first slider (7) were kept away from to the surface of feed screw (6) is equipped with second slider (8), first slider (7) with be close to precision steering ware (3) one side screw-thread fit, second slider (8) with keep away from precision steering ware (3) one side screw-thread fit, slide (9) are passed and core (10) are fixed with on the top of second slider (8), and core (10) are through second slider (8) and slide (9) sliding connection.

2. The feed mechanism for a chipless cutting machine according to claim 1, characterized in that: the surface of the tool rest (1) is integrally connected with two bosses which are uniformly distributed on two sides of the feed screw (6), and the upper surfaces of the bosses are provided with positioning grooves.

3. The feed mechanism for a chipless cutting machine according to claim 2, characterized in that: the ball type linear guide rail (12) is embedded in the positioning groove, the ball type linear guide rail (12) is fixedly connected with the boss through a bolt, a ball type linear slide rail (13) is connected to the outer surface of the ball type linear guide rail (12) in a sliding mode, an oil injection joint is fixed to the outer surface of the ball type linear slide rail (13), and the lower surfaces of the two sides of the sliding plate (9) are fixedly connected with the ball type linear slide rail (13) through bolts.

4. The feed mechanism for a chipless cutting machine according to claim 3 wherein: the length of the sliding plate (9) is equal to that of the ball type linear guide rail (12).

5. The feed mechanism for a chipless cutting machine according to claim 1, characterized in that: the outer surface of the sliding plate (9) is penetrated and provided with a guide groove, and two sides of the top of the second sliding block (8) are in interference fit with the inner wall of the guide groove and are in sliding connection with the guide groove.

6. The feed mechanism for a chipless cutting machine according to claim 1, characterized in that: the both sides of core board (10) all are provided with rectangular (11), and on rectangular (11) pass through the screw fixation in slide (9), core board (10) and rectangular (11) sliding connection, the length of core board (10) equals with the length of rectangular (11), the length of rectangular (11) equals with the length of slide (9).

7. The feed mechanism for a chipless cutting machine according to claim 1, characterized in that: the length of the bearing seat (4) from the tail end of the right side of the feed screw (6) is equal to the sum of the lengths of the core plate (10) and the cutting knife (14).

Technical Field

The invention relates to the technical field of cutting machine production, in particular to a feeding mechanism for a chipless cutting machine.

Background

The chipless cutting machine is one of cutting machines, and is characterized by low cutting noise and numerical control operation, and the feed mechanism is a core component in the chipless cutting machine and is used for controlling the depth of feed so as to realize accurate cutting.

The existing chipless cutting machine generally adopts the matching of an oil cylinder or an air cylinder with a slide rail and a slide block as a feed mechanism, but the design has the following defects: firstly, the stroke of the feed mechanism is longer, but the internal space of the equipment is limited, and the installation of the feed mechanism can be adapted only by increasing the volume of the whole equipment, so that the occupied space of the equipment is larger, and the production cost is higher; secondly, an oil cylinder or an air cylinder is adopted as a driving device, the feeding accuracy of the feeding mechanism cannot be accurately controlled, and meanwhile, the automatic control is not convenient.

Therefore, it is desirable to design a feeding mechanism for a chipless cutting machine to solve the above problems.

Disclosure of Invention

The invention aims to provide a feeding mechanism for a chipless cutting machine, and aims to solve the problems that the feeding mechanism provided by the background art is long in stroke, large in size and incapable of accurately controlling the feeding accuracy of the feeding mechanism.

In order to achieve the purpose, the invention provides the following technical scheme: a feeding mechanism for a chipless cutting machine comprises a tool rest, a servo motor, a precise steering gear, a bearing seat, a bearing, a ball type linear guide rail, a ball type linear slide rail and a cutting knife, wherein the bearing seat is fixed on the outer surface of the tool rest, a feeding screw is rotationally connected with the bearing seat through the bearing, a first sliding block is movably connected with the outer surface of the feeding screw, a sliding plate is fixed at the top end of the first sliding block, a core plate is arranged on the sliding plate, the cutting knife is fixed on the core plate, the precise steering gear is fixed on one side, close to the bearing seat, of the outer surface of the tool rest, one end of the precise steering gear is fixedly connected with the servo motor through a bolt, the output end of the servo motor is linked with the input end of the precise steering gear through a coupler, the servo motor and the feeding screw are arranged at ninety degrees, two sections of homodromous threads are arranged on the outer surface of the feeding screw, two sections screw threads are adjacent, and the thread length of keeping away from precision steering ware one side is the twice that is close to precision steering ware one side thread length, and is close to precision steering ware one side thread diameter and is greater than the thread diameter of keeping away from precision steering ware one side, and the thread pitch of keeping away from precision steering ware one side is the twice that is close to precision steering ware one side thread pitch, one side cover that first slider was kept away from to the surface of feed screw rod is equipped with the second slider, first slider with be close to precision steering ware one side screw-thread fit, the second slider with keep away from precision steering ware one side screw-thread fit, the slide is passed and is fixed with the core on the top of second slider, and the core passes through second slider and slide sliding connection.

Preferably, the surface of the tool rest is integrally connected with two bosses which are uniformly distributed on two sides of the feed screw, and the upper surface of each boss is provided with a positioning groove.

Preferably, a ball type linear guide rail is embedded in the positioning groove and is fixedly connected with the boss through a bolt, a ball type linear slide rail is slidably connected to the outer surface of the ball type linear guide rail, an oil filling joint is fixedly arranged on the outer surface of the ball type linear slide rail, and the lower surfaces of the two sides of the sliding plate are fixedly connected with the ball type linear slide rail through bolts.

Preferably, the length of the sliding plate is equal to that of the ball type linear guide rail.

Preferably, the outer surface of the sliding plate is provided with a guide groove in a penetrating manner, and two sides of the top of the second sliding block are in interference fit with the inner wall of the guide groove and are in sliding connection with the guide groove.

Preferably, the both sides of core all are provided with rectangular, and rectangular pass through the screw fixation on the slide, core and rectangular sliding connection, the length of core equals with rectangular length, rectangular length equals with the length of slide.

Preferably, the length of the bearing seat from the tail end of the right side of the cutter feeding screw is equal to the sum of the lengths of the core plate and the cutter.

Compared with the prior art, the invention has the beneficial effects that: this feed mechanism for chipless cutting machine more does benefit to accurate control through changing drive mode to reduce feed mechanism's drive stroke when the depth of feed is unchangeable.

(1) The output end of the servo motor is linked with the precision steering gear, the feed screw is arranged in the precision steering gear, the feed screw is driven to move left and right through the work of the precision steering gear, and the servo motor and the precision steering gear are used as a driving mechanism to replace the existing oil cylinder, air cylinder or hand wheel to rotate to drive the screw to rotate, so that the stroke of the feed screw can be controlled accurately, and the feed depth can be controlled accurately;

(2) the original one-section type feed mechanism of the screw rod, the slide rail and the slide block is optimized into a sectional type feed structure, two sections of homodromous threads are designed at the output part of the feed screw rod, the length of the thread at one side far away from the precision steering gear is twice of the length of the thread at one side close to the precision steering gear, the diameter of the thread at one side close to the precision steering gear is larger than that of the thread at one side far away from the precision steering gear, the pitch of the thread at one side far away from the precision steering gear is twice of that of the thread at one side close to the precision steering gear, when the servo motor drives the precision steering gear to work, the threads at two ends can simultaneously drive the first slide block and the second slide block to slide left and right, and the movement speed of the second slide block is always twice of the first slide block, thereby achieving the effect of reducing one third of the drive stroke of the feed mechanism while the feed depth is unchanged, leading the whole structure to be more compact and reducing the occupied space, the production cost is reduced.

(3) Meanwhile, the sectional type feed structure also improves the feed speed and shortens half of the feed time.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic view of the present invention in a retracted state;

FIG. 3 is a schematic view of the entire structure of the present invention;

FIG. 4 is a partial schematic view of the structure of the present invention;

FIG. 5 is a schematic overall view of the structure of the feed screw and the second slide block of FIG. 1 according to the present invention;

FIG. 6 is a partial schematic view of the feed screw of FIG. 5 according to the present invention;

fig. 7 is a schematic view of the tool holder of fig. 1 according to the present invention as a whole.

In the figure: 1. a tool holder; 2. a servo motor; 3. a precision steering gear; 4. a bearing seat; 5. a bearing; 6. feeding a screw rod; 7. a first slider; 8. a second slider; 9. a slide plate; 10. a core board; 11. a strip; 12. a ball type linear guide rail; 13. a ball type linear slide rail; 14. a cutting knife.

Detailed Description

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, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

Referring to fig. 1 to 7, a feed mechanism for a chipless cutting machine according to an embodiment of the present invention includes a tool rest 1, a servo motor 2, a precision steering gear 3, a bearing seat 4, a bearing 5, a ball linear guide rail 12, a ball linear slide rail 13, and a cutting knife 14, wherein the bearing seat 4 is fixed on an outer surface of the tool rest 1, a feed screw 6 is rotatably connected to the bearing seat 4 through the bearing 5, a first slider 7 is movably connected to an outer surface of the feed screw 6, a sliding plate 9 is fixed at a top end of the first slider 7, a core plate 10 is disposed on the sliding plate 9, the cutting knife 14 is fixed on the core plate 10, the feed screw 6 is connected to the first slider 7 through a thread, and the feed screw 6 rotates to drive the first slider 7 to slide, so that the sliding plate 9 drives the cutting knife 14 to move in and out through the core plate 10.

One side that the surface of knife rest 1 is close to bearing frame 4 is fixed with accurate steering gear 3, the one end of accurate steering gear 3 is connected fixedly through bolt and servo motor 2, and the output of servo motor 2 passes through the shaft coupling and the input linkage of accurate steering gear 3, servo motor 2 is ninety degrees with feed screw 6 and arranges, two sections syntropy screw threads have been seted up to feed screw 6's surface, the reduction ratio of accurate steering gear 3 is 9-50, drive accurate steering gear 3 through servo motor 2, accurate steering gear 3 changes power to back control feed screw 6 and stretches out and draws back, this is prior art, do not do too much here and describe.

As shown in fig. 5, two sections of threads are adjacent, the length of the thread on the side far away from the precision steering gear 3 is twice the length of the thread on the side near the precision steering gear 3, the diameter of the thread on the side near the precision steering gear 3 is larger than that of the thread on the side far away from the precision steering gear 3, the thread pitch on the side far away from the precision steering gear 3 is twice the thread pitch on the side near the precision steering gear 3, a second slider 8 is sleeved on the side, far away from the first slider 7, of the outer surface of the feed screw 6, the first slider 7 is in threaded fit with the side near the precision steering gear 3, the second slider 8 is in threaded fit with the side far away from the precision steering gear 3, the top end of the second slider 8 penetrates through the sliding plate 9 and is fixed with a core plate 10, and the core plate 10 is in sliding connection with the sliding plate 9 through the second slider 8, by the design of threaded fit, the movement stroke of the second slider 8 is always twice the movement stroke of the first slider 7, therefore, the movement stroke of the core plate 10 is always twice of that of the sliding plate 9, and the sliding plate 9 and the core plate 10 can be synchronously stretched.

Further, as shown in fig. 3 and 7, the surface of the tool holder 1 is integrally connected with two bosses, the two bosses are uniformly distributed on two sides of the feed screw 6, positioning grooves are formed in the upper surfaces of the bosses, ball-type linear guide rails 12 are embedded in the positioning grooves, the positioning is more convenient, screw holes are conveniently formed, the ball-type linear guide rails 12 are conveniently connected and fixed with the bosses through bolts, ball-type linear slide rails 13 are slidably connected to the outer surfaces of the ball-type linear guide rails 12, oil injection joints are fixedly arranged on the outer surfaces of the ball-type linear slide rails 13, the lower surfaces of two sides of the sliding plate 9 are fixedly connected with the ball-type linear slide rails 13 through bolts, so that two sides of the sliding plate 9 are limited through the ball-type linear slide rails 13, and the ball-type linear slide rails 13 can stably slide on the ball-type linear guide rails 12.

Further, as shown in fig. 1-2, the length of the sliding plate 9 is equal to that of the ball-type linear guide rail 12, so that the occupied space of the sliding plate 9 after being completely retracted is reduced.

Further, as shown in fig. 4 to 5, the outer surface of the sliding plate 9 is penetrated by a guide groove, two sides of the top of the second slider 8 are in interference fit with the inner wall of the guide groove and are slidably connected with the guide groove, and the guide groove limits the movement range of the second slider 8.

Further, as shown in fig. 2, the strips 11 are disposed on two sides of the core plate 10, the strips 11 are fixed on the sliding plate 9 through screws, the core plate 10 is slidably connected with the strips 11, so that the stability of the core plate 10 moving on the sliding plate 9 is improved, the length of the core plate 10 is equal to that of the strips 11, the length of the strips 11 is equal to that of the sliding plate 9, and the occupied space of the core plate 10 after being completely retracted is reduced.

Further, as shown in fig. 2, the length of the bearing seat 4 from the right end of the feed screw 6 is equal to the sum of the lengths of the core plate 10 and the cutting knife 14, so that the overall length of the feed mechanism for the chipless cutting machine does not exceed the feed screw 6, and the overall occupied space of the feed mechanism for the chipless cutting machine is reduced to the maximum extent.

The working principle is as follows: through energizing servo motor 2, servo motor 2 drives feed screw 6 through accurate steering gear 3 and rotates, the design of feed screw 6 output section has two sections syntropy screw threads, the thread length of keeping away from accurate steering gear 3 one side is the twice of being close to accurate steering gear 3 one side thread length, and be close to accurate steering gear 3 one side thread diameter and be greater than the thread diameter of keeping away from accurate steering gear 3 one side, the thread pitch of keeping away from accurate steering gear 3 one side is the twice of being close to accurate steering gear 3 one side thread pitch, servo motor 2 drives accurate steering gear 3 during operation, two sections screw threads can drive first slider 7 and the 8 horizontal slip of second slider simultaneously.

Then the first slide block 7 drives the slide plate 9 to extend and retract, and simultaneously the second slide block 8 drives the cutting knife 14 to extend and retract through the core plate 10.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.