Griffe mechanism

Abstract

The utility model discloses a griffe mechanism, which belongs to the technical field of machining equipment, and adopts the technical scheme that the griffe mechanism comprises a support frame, a griffe seat is arranged on the support frame in a sliding manner, a chuck for clamping a cutter is mounted on the griffe seat, a transmission shaft is rotationally arranged on the griffe seat, and a gear is coaxially arranged on the transmission shaft; a rack meshed with the gear is arranged on the supporting frame, and a driving piece used for driving the transmission shaft to rotate is arranged on the griffe seat.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of machining equipment, and particularly relates to a broach mechanism. BACKGROUND

[0002] A Chinese patent with publication number CN115446381B discloses a multiple-feeding keyway broaching machine, relating to the technical field of machining equipment, and its technical scheme is as follows: the broaching machine comprises a rack, a lifting device, a broach, a positioning mechanism and a feeding mechanism, the lifting device is slidably arranged on the rack and can limit a workpiece, a driving assembly for driving the lifting device to slide is arranged on the rack; the positioning mechanism is arranged on the rack and is used for limiting the broach, the feeding mechanism is arranged on the lifting device, and the feeding mechanism can adjust the amount of feed of the broach.

[0003] The above technical scheme has the following defects: the driving source (cylinder or oil cylinder) of the broach mechanism is too long, which occupies too much vertical space and greatly affects the spatial layout of low-height workshops, and even is difficult to apply. UTILITY MODEL CONTENT

[0004] The utility model aims at the above problems existing in the prior art, and provides a broach mechanism, and the technical problem to be solved by the utility model is how to make the structure more compact and reduce space occupation.

[0005] The above technical purpose of the utility model can be realized through the following technical scheme: a broach mechanism comprises a support frame, a broach seat is slidably arranged on the support frame, a chuck for clamping a tool is installed on the broach seat, a transmission shaft is rotatably arranged on the broach seat, a gear is coaxially arranged on the transmission shaft, a rack meshing with the gear is arranged on the support frame, and a driving member for driving the transmission shaft to rotate is arranged on the broach seat.

[0006] In the above broach mechanism, the driving member comprises a rotary driving source and a speed reducer, the output end of the rotary driving source is connected with the input end of the speed reducer, and the output end of the speed reducer is connected with the transmission shaft.

[0007] In the above broach mechanism, the gear has two gears, the two gears are respectively located at the two ends of the transmission shaft, the rack has two racks, the two racks are respectively located at the two sides of the support frame, and the two gears and the two racks correspond respectively.

[0008] In the above broach mechanism, at least two bearing seats are arranged on the support frame, and the two ends of the transmission shaft respectively pass through the bearings of the two bearing seats.

[0009] The supporting frame is provided with a sliding rail, and a sliding block is slidably connected to the sliding rail.

[0010] The bottom of the sword lifting seat is provided with an anti-collision sensing part.

[0011] The anti-collision sensing part comprises a mounting seat, a shell, an anti-collision rod, a sensing block and a proximity switch.

[0012] The mounting seat is provided with a limiting groove for limiting the sensing block.

[0013] The rack and the sliding rail are arranged in a vertical direction.

[0014] The transmission shaft is threadedly connected with a limiting nut corresponding to the gear.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The sword lifting seat is slidably arranged on the supporting frame, the driving member on the sword lifting seat drives the transmission shaft to rotate, the transmission shaft drives the gear to rotate, the gear rolls along the rack on the supporting frame, so that the sword lifting seat slides, and the chuck moves with the sword lifting seat, thereby completing the sword lifting action. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 Structure schematic view of the embodiment;

[0018] Fig. 2 Structure schematic view of the embodiment;

[0019] Fig. 3 Structure schematic view of the anti-collision sensing part of the embodiment;

[0020] Fig. 4 Structure schematic view of the anti-collision sensing part of the embodiment.

[0021] Marked: 1, support frame; 2, cutting tool holder; 3, chuck; 4, transmission shaft; 5, gear; 6, rack; 7, driving part; 71, rotary driving source; 72, speed reducer; 8, bearing seat; 9, slide rail; 10, sliding block; 11, anti-collision sensing part; 111, mounting seat; 112, anti-collision rod; 113, sensing block; 114, proximity switch; 115, shell; 12, limiting groove; 13, limiting nut. DETAILED DESCRIPTION

[0022] The following is a specific embodiment of the present application and further describes the technical scheme of the present application in combination with the drawings, but the present application is not limited to these embodiments.

[0023] A cutting tool lifting mechanism, as shown in Figs. 1 to 4 , comprising a support frame 1, a cutting tool holder 2 is slidingly arranged on the support frame 1, a chuck 3 for clamping a cutting tool is mounted on the cutting tool holder 2, the chuck 3 belongs to the prior art, and its specific structure and the principle of how to clamp the cutting tool will not be described in detail.

[0024] Specifically, the support frame 1 is provided with two slide rails 9 which are spaced apart and arranged in a vertical direction. Corresponding sliding blocks 10 are slidingly connected to the two slide rails 9. The sliding blocks 10 are connected to the cutting tool holder 2. The sliding of the cutting tool holder 2 is guided by the cooperation of the slide rails 9 and the sliding blocks 10, thereby ensuring the stability of the cutting tool holder 2 during sliding. Furthermore, the sliding of the cutting tool holder 2 is guided by the cooperation of the two spaced-apart slide rails 9 and the corresponding sliding blocks 10, which can further ensure the stability of the cutting tool holder 2 during sliding and prevent the cutting tool holder 2 from being tilted.

[0025] A transmission shaft 4 is rotatably arranged on the cutting tool holder 2. At least two bearing seats 8 are provided on the support frame 1 and are spaced apart. The two ends of the transmission shaft 4 pass through the bearings of the two bearing seats 8, thereby ensuring the stability of the transmission shaft 4.

[0026] A driving part 7 is provided on the cutting tool holder 2 for driving the transmission shaft 4 to rotate. Preferably, the driving part 7 comprises a rotary driving source 71 and a speed reducer 72. The output end of the rotary driving source 71 is connected to the input end of the speed reducer 72, and the output end of the speed reducer 72 is connected to the transmission shaft 4. The rotary driving source 71 is preferably an electric motor, and other driving sources with rotary function can also be used.

[0027] As another scheme, the driving part 7 comprises an electric motor, a bevel gear 5 one and a bevel gear 5 two. The output end of the electric motor is connected to the bevel gear 5 one, and the bevel gear 5 two is coaxially arranged with the transmission shaft 4. The bevel gear 5 one is engaged with the bevel gear 5 two.

[0028] The transmission shaft 4 is coaxially provided with a gear 5, and the support frame 1 is provided with a rack 6 engaged with the gear 5, in the embodiment, the gear 5 has two gears respectively located at two ends of the transmission shaft 4, and the rack 6 has two racks respectively located at two sides of the support frame 1, the two racks 6 are arranged in the vertical direction, and the two gears 5 correspond to the two racks 6 respectively, and it should be noted that, by arranging the gear 5 at the two ends of the transmission shaft 4 and cooperating with the corresponding rack 6, the knife holder 2 can be more stable during sliding, and side warping can be avoided.

[0029] The transmission shaft 4 is coaxially provided with a gear 5, and the support frame 1 is provided with a rack 6 engaged with the gear 5, in the embodiment, the gear 5 has two gears respectively located at two ends of the transmission shaft 4, and the rack 6 has two racks respectively located at two sides of the support frame 1, the two racks 6 are arranged in the vertical direction, and the two gears 5 correspond to the two racks 6 respectively, and it should be noted that, by arranging the gear 5 at the two ends of the transmission shaft 4 and cooperating with the corresponding rack 6, the knife holder 2 can be more stable during sliding, and side warping can be avoided.

[0030] The working principle of the utility model is as follows:

[0031] The output end of the rotary driving source 71 is rotated, and then the output end of the speed reducer 72 is rotated and drives the transmission shaft 4 to rotate, the gear 5 rotates with the transmission shaft 4 and rolls along the length direction of the rack 6, and then the knife holder 2 and the sliding block 10 slide along the length direction of the slide rail 9, and the chuck 3 moves with the knife holder 2.

[0032] It should be noted that, in the prior art, a cylinder or an oil cylinder is usually used to drive the knife holder 2 to move, in order to meet the stroke requirement of the knife holder 2, the length of the cylinder or the oil cylinder is relatively long, and too much vertical space is occupied, which is difficult to apply to some low factory buildings and has certain rigidity requirements for space layout, and the utility model realizes the sliding of the knife holder 2 and the movement of the chuck 3 through the cooperation of the rotary driving source 71, the speed reducer 72, the transmission shaft 4, the gear 5 and the rack 6, the structure is more compact, the space occupation is reduced, the requirement for vertical space is lower, and the application range is wider.

[0033] Further, the bottom of the knife holder 2 is provided with an anti-collision sensing piece 11, the anti-collision sensing piece 11 comprises a mounting seat 111, an outer shell 115, an anti-collision rod 112, a sensing block 113 and a proximity switch 114, the mounting seat 111 is mounted on the knife holder 2, the outer shell 115 is mounted on the mounting seat 111, the anti-collision rod 112 is slidingly arranged on the mounting seat 111, the sensing block 113 is arranged on the anti-collision rod 112, and the proximity switch 114 is arranged on the outer shell 115 and is used for sensing the sensing block 113.

[0034] It should be noted that when the anti-collision rod 112 collides with other components as the sliding of the lifting knife seat 2, the anti-collision rod 112 slides and drives the inductive block 113 to move, as the position of the inductive block 113 changes, the proximity switch 114 detects the change of the position of the inductive block 113, and the proximity switch 114 transmits a corresponding signal to the external controller, and the external controller stops the rotary driving source 71 after receiving the signal, at this time the lifting knife seat 2 will immediately stop sliding, thereby effectively avoiding further collision, thereby improving the safety and reliability of the lifting knife mechanism, and ensuring the stable operation of the lifting knife mechanism in a complex working environment.

[0035] The mounting seat 111 is provided with a limiting groove 12 for limiting the inductive block 113, that is, by limiting the movement of the inductive block 113 within the predetermined range of the limiting groove 12, the inductive block 113 is prevented from moving excessively and deviating from the preset inductive area, thereby ensuring that the proximity switch 114 can accurately and reliably detect the position change of the inductive block 113.

[0036] The specific embodiments described herein are merely illustrative of the spirit of the present application; those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A knife-lifting mechanism, characterized in that: The device includes a support frame (1), on which a tool holder (2) is slidably mounted. A chuck (3) for holding a tool is mounted on the tool holder (2). A drive shaft (4) is rotatably mounted on the tool holder (2). A gear (5) is coaxially mounted on the drive shaft (4). A rack (6) meshing with the gear (5) is mounted on the support frame (1). A drive component (7) for driving the drive shaft (4) to rotate is mounted on the tool holder (2).

2. The knife-lifting mechanism according to claim 1, characterized in that: The drive unit (7) includes a rotary drive source (71) and a reducer (72). The output end of the rotary drive source (71) is connected to the input end of the reducer (72), and the output end of the reducer (72) is connected to the transmission shaft (4).

3. The knife-lifting mechanism according to claim 1, characterized in that: There are two gears (5) located at both ends of the transmission shaft (4), and there are two racks (6) located on both sides of the support frame (1). The two gears (5) correspond to the two racks (6).

4. The knife-lifting mechanism according to claim 1, characterized in that: The support frame (1) is provided with at least two bearing seats (8), and the two ends of the transmission shaft (4) pass through the bearings of the two bearing seats (8) respectively.

5. The knife-lifting mechanism according to claim 1, characterized in that: The support frame (1) is provided with a slide rail (9), and a slider (10) is slidably connected on the slide rail (9). The slider (10) is connected to the knife lifting seat (2).

6. A knife-lifting mechanism according to any one of claims 1-5, characterized in that: The bottom of the knife holder (2) is provided with an anti-collision sensor (11).

7. A knife-lifting mechanism according to claim 6, characterized in that: The anti-collision sensor (11) includes a mounting base (111), a housing (115), an anti-collision bar (112), a sensing block (113), and a proximity switch (114). The housing (115) is mounted on the mounting base (111), the anti-collision bar (112) is slidably disposed on the mounting base (111), the sensing block (113) is disposed on the anti-collision bar (112), and the proximity switch (114) is disposed on the housing (115) and is used to sense the sensing block (113).

8. A knife-lifting mechanism according to claim 7, characterized in that: The mounting base (111) is provided with a limiting groove (12) for limiting the position of the sensing block (113).

9. A knife-lifting mechanism according to claim 5, characterized in that: Both the rack (6) and the slide rail (9) are arranged in the vertical direction.

10. A knife-lifting mechanism according to any one of claims 1-5, characterized in that: A limiting nut (13) corresponding to the gear (5) is threaded onto the drive shaft (4). The limiting nut (13) is used to limit the gear (5) along the axial direction of the drive shaft (4).

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