CN220805609U - Milling deep square hole machine tool - Google Patents

Abstract

The utility model discloses a deep square hole milling machine tool, which relates to the technical field of machining and comprises a support frame and a transmission unit; the support frame is provided with a fixing unit and a lifting mechanism, the lifting mechanism is provided with a motor, and an output shaft of the motor is connected with a universal joint; the transmission unit comprises a limiting frame, a Lailo triangle and a supporting rod, wherein the limiting frame is fixedly connected to the motor, and a limiting groove is formed in the limiting frame. The beneficial effects are that: according to the utility model, the tip end part of the Lai-Luo triangle is enabled to rapidly rotate through the contact point position with the limiting frame by the rotating roller, so that the impact force of the tip end part of the Lai-Luo triangle contacting the limiting frame is effectively reduced, the smoothness of the contact between the tip end part of the Lai-Luo triangle and the limiting frame is improved, the abrasion between the tip end part of the Lai-Luo triangle and the limiting frame is reduced, the quality of a processed square hole is ensured, and the service lives of the Lai-Luo triangle and the limiting frame are prolonged.

Description

Milling deep square hole machine tool

Technical Field

The utility model relates to the technical field of machining, in particular to a deep square hole milling machine tool.

Background

In the traditional hole processing, a common method for processing a square hole is to firstly drill a round hole in the center of the square hole by using drilling equipment, and then cut planes on four sides of the round hole by using other tools to form the square hole; the method is characterized in that the motion trail characteristic of the Lailo triangle is utilized, square holes can be processed, the Lailo triangle is firstly researched by a mechanomogist, an arc triangle is drawn by drawing a regular triangle firstly, and then drawing an arc by taking three vertexes as circle centers and side lengths as radiuses respectively; placing a graph between two parallel lines so that it is tangential to the two parallel lines can do: regardless of how this graph moves, it is always tangential to the two parallel lines as long as it is still within the two parallel lines, but the center point will form a circle; the lyocell triangle shape is thus able to form square holes.

Through searching, the patent with the Chinese patent publication number of CN214659923U discloses a square hole drilling tool and a rectangular hole drilling tool, which mainly drive a drilling tool to rotate through a Lai triangle block by virtue of the Lai triangle rotation track characteristic, so that square holes are machined through the drilling tool.

Compared with the prior art in the related field, when the square hole is processed by utilizing the characteristic that the turning track of the Lai triangle is square, the Lai triangle block is required to be limited by the limiting frame, the Lai triangle block continuously collides with the limiting frame during turning, so that the contact abrasion of the limiting frame and the Lai triangle block is increased, the tip part of the Lai triangle block is a main stress point, the tip part of the Lai triangle block and the limiting frame are damaged due to continuous collision, the processing precision of the square hole is influenced, and the service lives of the limiting frame and the Lai triangle block are influenced.

Disclosure of utility model

The present utility model aims to solve the above problems and provide a deep square hole milling machine tool.

The utility model realizes the above purpose through the following technical scheme:

A milling deep square hole machine tool comprises a support frame and a transmission unit;

The device comprises a support frame, a fixing unit, a lifting mechanism, a motor, a universal joint, a motor, a control switch group, a motor and a universal joint, wherein the fixing unit and the lifting mechanism are arranged on the support frame, the workpiece needing to be milled with a deep square hole is fixed through the fixing unit, the motor is arranged on the lifting mechanism, an output shaft of the motor is connected with the universal joint, an input end of the lifting mechanism and an input end of the motor are connected with an output end of the external control switch group, the motor and the universal joint are driven to lift through the lifting mechanism, and output power of the motor is transmitted through the universal joint;

The transmission unit comprises a limit frame, a Lai Luo triangle and a supporting rod, wherein the limit frame is fixedly connected to the motor, a limit groove is formed in the limit frame, the Lai Luo triangle is in the limit groove in a sliding mode, a main shaft is arranged on the upper surface of the Lai Luo triangle, the main shaft is connected with the universal joint, storage grooves are formed in three tip parts of the Lai Luo triangle, three sliding grooves are formed in the Lai Luo triangle, the three sliding grooves are respectively corresponding to the storage grooves, a spring I is arranged in the three sliding grooves, a connecting sliding plate is connected with the sliding grooves, the sliding plate is connected with the supporting rod, the Lai Luo triangle is in sliding connection with the Lai Luo triangle, a connecting rack of the supporting rod is connected with a rotating roller in a rolling mode, a mounting seat is arranged on the lower surface of the rotating rack, a clamping unit is arranged in the mounting seat, the mounting seat is connected with a mounting seat, a spring I sliding groove is arranged in the mounting seat, the motor is fixedly arranged in the clamping seat, the Lai Luo triangle through the sliding groove, the sliding groove is connected with the rotating groove, the milling cutter is driven by the special milling cutter, the milling cutter is driven by the rotating along the rotating track of the special milling cutter, and the milling cutter is driven by the rotating along the special groove, and the rotating track of the milling cutter is reduced when the milling cutter is in the end of the round groove through the special milling cutter, and the rotating along the groove is in the limit groove, the roller is always contacted with the limit frame, when the tip of the Lai-Luo triangle is in contact with the limit frame, the roller drives the slide plate to move through the placing frame and the supporting rod, the spring I is extruded through the slide plate, the roller is buffered through the spring I, the placing frame is limited through the storage groove, when the roller is contracted into the storage groove, the contact part of the roller and the limit frame and the tip of the Lai-Luo triangle are flush, the tip of the Lai-Luo triangle is contacted with the limit frame through the roller, the tip of the Lai-Luo triangle is rapidly rotated to pass through the contact point, the impact force of the tip of the Lai-Luo triangle contacting the limit frame is effectively reduced, the abrasion of the tip of the Lai-Luo triangle and the limit frame is effectively reduced, and the service life is prolonged.

Furthermore, the sliding groove and the sliding plate are square, and the sliding plate is prevented from rotating in the sliding groove through the square sliding groove and the square sliding plate.

Further, the transmission unit further comprises a wear-resistant strip, the wear-resistant strip is arranged on the inner wall of the limiting groove, the wear-resistant strip is in rolling connection with the rotating roller, the contact part of the rotating roller and the wear-resistant strip are flush with the tip part of the Lai-Luo triangle, and abrasion of the rotating roller to the limiting frame is reduced through the wear-resistant strip.

Further, the clamping unit is including accomodating the chamber, pressing from both sides tight piece, kicking block and reset assembly, accomodate the chamber setting and be in the mount pad, accomodate the intracavity equiangle and be provided with on the reset assembly the clamping block, press from both sides tight piece sliding connection the mount pad with the milling cutter, the kicking block is located press from both sides tight piece directly over, press from both sides tight piece with the opposite side of kicking block is the inclined plane, just press from both sides tight piece sliding connection the kicking block, the upper surface of kicking block is provided with the connecting rod, connecting rod sliding connection mount pad and gland, the gland is located the top of mount pad, be provided with the internal thread on the gland, be provided with the external screw thread on the mount pad, the gland with mount pad threaded connection, the fixed part of milling cutter is placed between the clamping block that the connecting rod set up, and the gland passes through the connecting rod and drives the kicking block and promote to press from both sides tight piece for press from both sides tight piece and remove, press from both sides tight piece, the upper surface is provided with the connecting rod, connecting rod sliding connection the mount milling cutter, thereby the milling cutter is fixed.

Further, reset assembly includes the slide bar, the slide bar equiangle sets up accomodate the intracavity, cup jointed the spring second on the slide bar, slide bar sliding connection slider, the slider is connected the clamping block, the clamping block receives thrust and presss from both sides tight during operation, and the clamping block passes through the slider and removes along the slide bar to compress spring second, carry out spacingly to the clamping block through slide bar and slider, when the thrust of clamping block disappears, makes the clamping block reset through spring second.

Further, the fixed unit includes fixed plate, screw rod, the fixed plate sets up on the support frame, threaded connection on the fixed plate the screw rod, the one end of screw rod is provided with the knob, the other end of screw rod rotates the connection splint, splint sliding connection the support frame drives splint through knob and screw rod and removes, presss from both sides tightly fixedly to milling square hole's work piece through splint.

Compared with the prior art, the utility model has the following beneficial effects:

1. Through rack, branch, slide and first make the rotatory roller elastic contact spacing frame, make the most advanced portion of Lai Luo set square rotate fast through the rotatory roller and pass the contact point with spacing frame, effectively reduce the impact force of the most advanced portion of Lai Luo set square contact spacing frame, and improve the smooth nature when the tip of Lai Luo set square contacts with spacing frame, reduce wearing and tearing and the collision damage between tip and the spacing frame of Lai Luo set square, guarantee square hole machining's precision, the life of extension Lai Luo set square and spacing frame.

2. The gland promotes the clamp block through connecting rod, kicking block simultaneously for the clamp block that equiangular setting removes simultaneously and presss from both sides tightly fixedly to the milling cutter, because clamp block atress removes simultaneously, thereby makes the milling cutter be located the intermediate position, appears the skew when avoiding the milling cutter installation, guarantees the processing of milling cutter can be better carry out the dark square hole.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of a deep square hole milling machine tool according to the present utility model;

FIG. 2 is a schematic diagram of a partial cross-sectional elevation structure of a deep square hole milling machine according to the present utility model;

FIG. 3 is a schematic top view of a partial cross-section of a machine tool for milling deep square holes according to the present utility model;

FIG. 4 is a schematic diagram of a cooperation structure of a clamping block and a top block of a deep square hole milling machine tool according to the utility model;

Fig. 5 is a schematic diagram of a top-down structure of a limit frame and a rally triangle of a deep square hole milling machine tool according to the present utility model;

Fig. 6 is a schematic diagram of a limiting frame structure of a deep square hole milling machine tool according to the utility model;

The reference numerals are explained as follows:

1. A support frame; 2. a transmission unit; 21. a limit frame; 22. a limit groove; 23. a Lai Luo triangle; 24. a chute; 25. a first spring; 26. a support rod; 27. a placing rack; 28. a rotating roller; 29. a storage groove; 210. a main shaft; 211. wear strips; 212. a slide plate; 3. a clamping unit; 31. a storage chamber; 32. a clamping block; 33. a slide block; 34. a slide bar; 35. a second spring; 36. a top block; 37. a connecting rod; 38. a gland; 4. a fixing unit; 41. a fixing plate; 42. a screw; 43. a clamping plate; 44. a knob; 5. a milling cutter; 6. a mounting base; 7. a lifting mechanism; 8. a motor; 9. and a universal joint.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The utility model is further described below with reference to the accompanying drawings:

Examples

As shown in fig. 1 to 6, a deep square hole milling machine tool comprises a support frame 1 and a transmission unit 2;

The support frame 1 is provided with a fixing unit 4 and a lifting mechanism 7, as shown in fig. 1, a workpiece needing to be milled with a deep square hole is fixed through the fixing unit 4, the workpiece is prevented from moving in the machining process, the stability during machining is guaranteed, the lifting mechanism 7 is provided with a motor 8, an output shaft of the motor 8 is connected with a universal joint 9, as shown in fig. 1, the input ends of the lifting mechanism 7 and the motor 8 are connected with the output ends of an external control switch group, during operation, the lifting mechanism 7 and the motor 8 are respectively controlled to work through the external control switch group, the motor 8 and the universal joint 9 are driven to lift through the lifting mechanism 7, so that the depth of the machined square hole is adjusted, and the output power of the motor 8 is transmitted through the universal joint 9;

The transmission unit 2 comprises a limit frame 21, a Lai Luo triangle 23 and a support rod 26, wherein the limit frame 21 is fixedly connected to a motor 8, a limit groove 22 is arranged on the limit frame 21, the Lai Luo triangle 23 is in sliding connection with the limit groove 22, a main shaft 210 is arranged on the upper surface of the Lai Luo triangle 23, the main shaft 210 is connected with a universal joint 9, storage grooves 29 are respectively arranged at three tip parts of the Lai Luo triangle 23, three sliding grooves 24 are respectively arranged in the Lai Luo triangle 23 and correspond to the storage grooves 29, a spring I25 is respectively arranged in the three sliding grooves 24, the spring I25 is connected with a sliding plate 212, the sliding plate 212 is in sliding connection with the sliding groove 24, the sliding plate 212 is connected with the support rod 26, the support rod 26 is in sliding connection with the Lai Luo triangle 23, a connecting rack 27 of the support rod 26 is in sliding connection with a rotary roller 28, the rotary roller 28 is in rolling connection with the limit frame 21, the lower surface of the Lai Luo triangle 23 is provided with a mounting seat 6, the clamping unit 3 is arranged in the mounting seat 6, the mounting seat 6 is connected with the milling cutter 5, as shown in fig. 2, 5 and 6, the milling cutter 5 is mounted and fixed on the mounting seat 6 through the clamping unit 3, when the milling cutter 5 contacts a workpiece, the motor 8 drives the Lai triangle 23 to rotate in the limiting groove 22 through the universal joint 9 and the main shaft 210, the Lai triangle 23 can be subjected to multi-angle force transmission through the universal joint 9, when the Lai triangle 23 rotates, the Lai triangle 23 is limited through the limiting frame 21 and the limiting groove 22, the Lai triangle 23 drives the milling cutter 5 to rotate through the mounting seat 6 and the clamping unit 3, because the track of the Lai triangle 23 when the Lai triangle 23 rotates is square, the milling cutter 5 is driven to rotate along the square track through the mounting seat 6, thereby the processing of a deep square hole is performed on the workpiece through the milling cutter 5, when the Lai-Luo triangle 23 rotates in the limit groove 22, the spring I25 applies elasticity to the rotating roller 28 through the sliding plate 212, the supporting rod 26 and the placing frame 27, so that the rotating roller 28 always contacts the limit frame 21, when the tip end of the Lai-Luo triangle 23 needs to contact the limit frame 21, the rotating roller 28 drives the sliding plate 212 to move reversely through the placing frame 27 and the supporting rod 26, the spring I25 is extruded through the sliding plate 212, the rotating roller 28 is buffered through the spring I25, the placing frame 27 is limited through the containing groove 29, when the rotating roller 28 is contracted into the containing groove 29, the contact part of the rotating roller 28 and the limit frame 21 is flush with the tip end of the Lai-Luo triangle 23, the tip end of the Lai-Luo triangle 23 is contacted with the limit frame 21 through the rotating roller 28, the contact point of the tip end of the Lai-Luo triangle 23 is enabled to be quickly rotated through the contact point of the limit frame 21, the impact force of the Lai-Luo triangle 23 on the tip end of the Lai-Luo triangle 23 is effectively reduced, the forward end of the Lai-Luo triangle 23 is improved through the rotating roller 28 and the rotating roller 21 is buffered through the rotating roller I-Luo triangle 28, when the rotating roller is contacted with the limit frame 21, the contact point of the Lai-Luo triangle 23 is limited, the Lai-Luo triangle 23 is reduced, and the wear of the Lai-Luo triangle 23 is prolonged, and the Lai-Luo triangle 23 is used by the wear is prolonged.

The sliding groove 24 and the sliding plate 212 are square, as shown in fig. 5, through the square sliding groove 24 and the square sliding plate 212, the sliding plate 212 is effectively prevented from rotating in the sliding groove 24, and the rotating roller 28 is limited.

The transmission unit 2 further comprises a wear-resistant strip 211, the wear-resistant strip 211 is arranged on the inner wall of the limit groove 22, the wear-resistant strip 211 is in rolling connection with the rotary roller 28, the rotary roller 28 is flush with the contact part of the wear-resistant strip 211 and the tip end part of the lei-o triangle 23, as shown in fig. 2 and 6, the rotary roller 28 rotates along the wear-resistant strip 211, the limit frame 21 is protected through the wear-resistant strip 211, abrasion caused by direct contact of the rotary roller 28 and the limit frame 21 is reduced, and the service life of the limit frame 21 is prolonged.

The clamping unit 3 comprises a containing cavity 31, a clamping block 32, a top block 36 and a resetting component, wherein the containing cavity 31 is arranged in the mounting seat 6, the resetting component is internally and equiangularly provided with the clamping block 32, the clamping block 32 is slidably connected with the mounting seat 6 and the milling cutter 5, the top block 36 is positioned right above the clamping block 32, opposite sides of the clamping block 32 and the top block 36 are inclined planes, the clamping block 32 is slidably connected with the top block 36, a connecting rod 37 is arranged on the upper surface of the top block 36, the connecting rod 37 is slidably connected with the mounting seat 6 and the gland 38, the gland 38 is positioned above the mounting seat 6, an internal thread is arranged on the gland 38, an external thread is arranged on the mounting seat 6, the gland 38 is in threaded connection with the mounting seat 6, as shown in figures 2, 3 and 4, when the milling cutter 5 is mounted, the fixed part of the equiangular milling cutter 5 is firstly placed between the clamping blocks 32 arranged, the gland 38 is rotated, thereby adjusting the connection length of the gland 38 and the mounting seat 6, the gland 38 drives the top block 36 to move through the connecting rod 37, the top block 36 extrudes the clamping block 32, the top block 36 pushes the clamping block 32 through the top block 36 because the connection surface of the top block 36 to the clamping block 32 is an inclined surface, the clamping block 32 moves, the milling cutter 5 is clamped and fixed through the clamping block 32, thereby completing the mounting and fixing of the milling cutter 5, the milling cutter 5 is positioned at the middle position because the clamping block 32 is forced to move simultaneously, deflection is avoided when the milling cutter 5 is mounted, the milling cutter 5 is ensured to be better processed in deep square holes, the gland 38 reversely rotates through the connecting rod 37, the top block 36 moves through the connecting rod 37, the thrust of the top block 36 to the clamping block 32 disappears, the clamping block 32 reversely moves through the reset component under the action of the reset component, thereby the clamping block 32 is separated from the milling cutter 5, and the disassembly of the milling cutter 5 is completed.

The reset component comprises a slide bar 34, the slide bar 34 is arranged in the accommodating cavity 31 at equal angles, a second spring 35 is sleeved on the slide bar 34, the slide bar 34 is connected with a sliding block 33 in a sliding mode, the sliding block 33 is connected with a clamping block 32, when the clamping block 32 is subjected to pushing force of a jacking block 36 to clamp, as shown in fig. 2 and 4, the clamping block 32 pushes the sliding block 33 to move along the slide bar 34, the second spring 35 is compressed through the sliding block 33, the clamping block 32 is limited through the slide bar 34 and the sliding block 33, and when the pushing force of the jacking block 36 to the clamping block 32 disappears, the second spring 35 pushes the clamping block 32 reversely through the sliding block 33, so that the clamping block 32 is reset.

The fixing unit 4 comprises a fixing plate 41 and a screw rod 42, the fixing plate 41 is arranged on the support frame 1, the screw rod 42 is connected to the fixing plate 41 in a threaded mode, a knob 44 is arranged at one end of the screw rod 42, the other end of the screw rod 42 is connected with a clamping plate 43 in a rotating mode, the clamping plate 43 is connected with the support frame 1 in a sliding mode, as shown in fig. 1, during operation, a workpiece needing to be milled with a deep square hole is placed on the support frame 1, the workpiece is located between the two clamping plates 43, the knob 44 is rotated respectively, the screw rod 42 is driven to rotate through the knob 44, the clamping plate 43 is driven to move through the screw rod 42, the workpiece milling with the square hole is clamped and fixed through the clamping plate 43, and the processing position of the workpiece is located under the milling cutter 5.

Working principle: when the deep square hole is machined on a workpiece, as shown in fig. 2, 3 and 4, the fixed part of the milling cutter 5 is firstly placed between clamping blocks 32 which are arranged at equal angles, a gland 38 is rotated, so that the connecting length of the gland 38 and a mounting seat 6 is adjusted, the gland 38 drives a jacking block 36 to move through a connecting rod 37, the clamping blocks 32 are pushed by the jacking block 36 to extrude and push the clamping blocks 32, the clamping blocks 32 push a sliding block 33 to move along a sliding rod 34, the second spring 35 is compressed through the sliding block 33, the milling cutter 5 is clamped and fixed through the clamping blocks 32, the mounting and the fixing of the milling cutter 5 are finished, the milling cutter 5 is positioned at a middle position due to the fact that the clamping blocks 32 are simultaneously stressed to move, deflection is avoided when the milling cutter 5 is mounted, as shown in fig. 1, the machined workpiece is placed on a support frame 1, and the machined workpiece is positioned under the milling cutter 5, the knob 44 is respectively rotated, the screw rod 42 is driven to rotate through the knob 44, the clamping plate 43 is driven to move through the screw rod 42, the workpiece with square holes being milled is clamped and fixed through the clamping plate 43, as shown in figure 1, the lifting mechanism 7 is controlled to work through the external control switch group, the motor 8 is driven to move through the lifting mechanism 7, the milling cutter 5 is contacted with the workpiece, the motor 8 is controlled to work through the external control switch group, as shown in figures 1, 2, 5 and 6, the motor 8 drives the Laso triangle 23 to rotate in the limiting groove 22 through the universal joint 9 and the main shaft 210, the limiting frame 21 is protected through the wear-resisting strip 211, the Laso triangle 23 drives the milling cutter 5 to rotate through the mounting seat 6 and the clamping block 32, because the track of the rotation of the Laso triangle 23 is square, the Laso triangle 23 drives the milling cutter 5 to rotate along the square track through the mounting seat 6, when the milling cutter 5 is used for processing a deep square hole on a workpiece, when the Lai-Lo triangle 23 rotates in the limit groove 22, the spring I25 applies elastic force to the roller 28 through the sliding plate 212, the supporting rod 26 and the placing frame 27, so that the roller 28 always contacts the limit frame 21, when the tip end part of the Lai-Lo triangle 23 is about to contact the limit frame 21, the roller 28 drives the sliding plate 212 to move reversely through the placing frame 27 and the supporting rod 26, the spring I25 is used for extruding the spring I25, the roller 28 is buffered through the spring I25, the placing frame 27 is limited through the containing groove 29, when the roller 28 is contracted into the containing groove 29, the contact part of the roller 28 and the wear-resisting strip 211 is level with the tip end part of the Lai-Lo triangle 23, the tip end part of the Lai-Lo triangle 23 contacts the limit frame 21 through the roller 28, the tip end of the Lai-Luo triangle 23 is enabled to rapidly rotate through the contact point with the limit frame 21 through the rotating roller 28, the impact force of the tip end of the Lai-Luo triangle 23 to contact the limit frame 21 is effectively reduced, the smoothness of the contact between the tip end of the Lai-Luo triangle 23 and the limit frame 21 is improved through the rotating roller 28, abrasion and collision damage between the tip end of the Lai-Luo triangle 23 and the limit frame 21 are reduced, square hole machining precision is guaranteed, the service lives of the Lai-Luo triangle 23 and the limit frame 21 are prolonged, when the milling cutter 5 is disassembled, the gland 38 is reversely rotated, the top block 36 is driven to move through the connecting rod 37, the thrust of the top block 36 to the clamping block 32 is eliminated, the spring II 35 reversely pushes the clamping block 32 through the sliding block 33, the clamping block 32 is reset, and the clamping fixation of the clamping block 32 to the milling cutter 5 is relieved.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims (6)

1. The deep square hole milling machine tool is characterized by comprising a support frame (1) and a transmission unit (2);

The support frame (1) is provided with a fixing unit (4) and a lifting mechanism (7), the lifting mechanism (7) is provided with a motor (8), and an output shaft of the motor (8) is connected with a universal joint (9);

The transmission unit (2) comprises a limit frame (21), a Lai Luo triangle (23) and a support rod (26), wherein the limit frame (21) is fixedly connected to the motor (8), a limit groove (22) is formed in the limit frame (21), the Lai Luo triangle (23) is slidably connected to the limit groove (22), a main shaft (210) is arranged on the upper surface of the Lai Luo triangle (23), the main shaft (210) is connected to the universal joint (9), storage grooves (29) are formed in three tip parts of the Lai Luo triangle (23), three sliding grooves (24) are formed in the Lai Luo triangle (23), the three sliding grooves (24) are respectively corresponding to the storage grooves (29), a first spring (25) is arranged in each sliding groove (24), the first spring (25) is connected with a sliding plate (212), the sliding grooves (24) are connected with the support rod (26), the support rod (26) is connected with the support rod (26) in a sliding manner, the Lai Luo triangle (23) is connected with the rotary frame (28), the lower surface of the Lai Luo triangle (23) is provided with an installation seat (6), a clamping unit (3) is arranged in the installation seat (6), and the installation seat (6) is connected with a milling cutter (5).

2. A machine tool for milling deep square holes according to claim 1, wherein: the sliding groove (24) and the sliding plate (212) are square.

3. A machine tool for milling deep square holes according to claim 1, wherein: the transmission unit (2) further comprises a wear-resistant strip (211), the wear-resistant strip (211) is arranged on the inner wall of the limiting groove (22), the wear-resistant strip (211) is connected with the rotating roller (28) in a rolling mode, and the contact part of the rotating roller (28) and the wear-resistant strip (211) and the tip end part of the Lai-Luo triangle (23) are flush.

4. A machine tool for milling deep square holes according to claim 1, wherein: clamping unit (3) are including accomodating chamber (31), clamp block (32), kicking block (36) and reset assembly, accomodate chamber (31) setting in mount pad (6), accomodate equiangular in chamber (31) and be provided with on the reset assembly clamp block (32), clamp block (32) sliding connection mount pad (6) with milling cutter (5), kicking block (36) are located clamp block (32) directly over, clamp block (32) with the opposite side of kicking block (36) is the inclined plane, just clamp block (32) sliding connection kicking block (36), the upper surface of kicking block (36) is provided with connecting rod (37), connecting rod (37) sliding connection mount pad (6) and gland (38), gland (38) are located the top of mount pad (6), be provided with the internal thread on gland (38), mount pad (6) are provided with external screw thread (38) and install screw thread (6).

5. A machine tool for milling deep square holes according to claim 4, wherein: the resetting component comprises a sliding rod (34), the sliding rod (34) is arranged in the accommodating cavity (31) at equal angles, a spring II (35) is sleeved on the sliding rod (34), the sliding rod (34) is connected with a sliding block (33) in a sliding mode, and the sliding block (33) is connected with the clamping block (32).

6. A machine tool for milling deep square holes according to claim 1, wherein: the fixing unit (4) comprises a fixing plate (41) and a screw rod (42), wherein the fixing plate (41) is arranged on the support frame (1), the screw rod (42) is connected to the fixing plate (41) in a threaded mode, a knob (44) is arranged at one end of the screw rod (42), a connecting clamping plate (43) is connected to the other end of the screw rod (42) in a rotating mode, and the clamping plate (43) is connected with the support frame (1) in a sliding mode.