A device for milling grooves and bevels of automobile lock cylinders

Abstract

The present invention belongs to the technical field of automobile lock core processing, and relates to an automobile lock core milling groove and bevel processing device, including a hexagonal rotary station, a clamping assembly and a plurality of processing units. Six groups of clamping assemblies are provided on the hexagonal rotary station, and each group of clamping assemblies includes a flippable clamping head, which realizes the automatic flipping function through a T-shaped connecting rod, a gear ring and a tightening spring. An annular frame is provided on the periphery of the device, which is equipped with a cutting unit, a milling unit, a milling unit and a driving rack, and precise positioning processing is realized through a displacement assembly. During operation, the lock core workpiece is fixed by the clamping assembly after being transported to a fixed length, and truncation, double-sided milling and bevel processing are completed in sequence, wherein the rack drives the clamping head to automatically flip the workpiece to realize double-sided processing. It solves the problems of fixture obstruction and manual adjustment in traditional processing, and has the advantages of high processing efficiency and high degree of automation.

Description

Technical Field

[0001] The invention relates to the technical field of automobile lock core processing, in particular to an automobile lock core slot milling and bevel milling processing device. Background Art

[0002] During the production process of automobile lock cylinders, it is usually necessary to perform milling, milling, and beveling on cylindrical lock cylinder workpieces to meet their assembly and functional requirements. Traditional processing methods mostly use single-station fixtures to clamp the workpiece, and manually adjust or replace the fixture to achieve multi-sided processing. This is not only inefficient, but also difficult to ensure the consistency of processing accuracy. Especially when the lock cylinder requires double-sided processing, due to the limitations of the fixture structure, the workpiece needs to be disassembled and re-clamped multiple times, which not only increases the complexity of the operation, but also easily leads to product failure due to positioning errors. In addition, when conventional fixtures clamp lock cylinder workpieces with special shapes, there are often problems such as insufficient contact area and unstable clamping. Vibration is easily generated during high-speed milling, affecting the processing quality. Although there are some multi-station rotary processing equipment on the market, they generally lack automatic flipping functions and still require manual intervention to adjust the workpiece angle. Fully automated continuous production cannot be achieved, which restricts the efficiency and quality of lock cylinder processing.

[0003] Therefore, we propose a device for milling slots and bevels of automobile lock cylinders. Summary of the Invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0005] A device for milling grooves and beveling surfaces of automobile lock cylinders comprises a hexagonal rotating station, on which six groups of clamping assemblies are provided, the clamping assembly comprising an arc-shaped clamping plate, a clamping head provided at the end of the arc-shaped clamping plate, a concave groove for clamping the lock cylinder workpiece, the arc-shaped clamping plate being rotatably connected to the clamping head through a flipping assembly, the flipping assembly comprising a T-shaped slot, the T-shaped slot being arranged in the arc-shaped clamping plate, a T-shaped connecting rod being slidably engaged in the T-shaped slot, one end of the T-shaped connecting rod extending out of the arc-shaped clamping plate and fixedly connected to the clamping head, the other end of the T-shaped connecting rod abutting against a clamping spring, the other end of the clamping spring being fixedly connected to one end of the T-shaped slot, a gear ring being provided on the end of the T-shaped connecting rod close to the clamping spring, the gear ring being driven by a rack to drive the clamping head and the lock cylinder workpiece to rotate.

[0006] Preferably, the hexagonal rotating station is arranged in the milling chamber, and the hexagonal rotating station is driven to rotate by an external motor.

[0007] Preferably, the clamping assembly also includes a base, which is fixedly connected to the hexagonal rotating station, and a slide groove is provided on the base, in which a pair of sliders are slidably connected, and mutually offset sealing plates are provided on the opposite surfaces of the two sliders, and an arc-shaped clamping plate is fixedly connected to the slider, and a bidirectional screw rod slides through the middle of the slider, and the bidirectional screw rod is connected to the slide groove by the bracket, and is driven by a motor. When the bidirectional screw rod rotates, it can control the left and right sliders to slide toward or away from each other.

[0008] Preferably, an annular frame is provided on the periphery of the hexagonal rotating station, the annular frame is fixedly connected to the inner wall of the milling chamber, and a displacement component corresponding to the clamping component is provided on the inner side of the annular frame.

[0009] Preferably, the displacement assembly includes a base plate, which is fixedly connected to the inner wall of the annular frame. A guide groove is provided on the base plate, and a movable frame is slidably connected in the guide groove. The movable frame is driven by a No. 1 electric push rod to slide in the guide groove, and a No. 2 electric push rod is fixedly connected to the movable frame.

[0010] Preferably, there are six groups of No. 2 electric push rods, one group of which is fixedly connected to a cutting unit, two groups of which are fixedly connected to a milling unit, two groups of which are fixedly connected to a milling unit, and one group of which is fixedly connected to a rack.

[0011] Preferably, the six groups of No. 2 electric push rods are connected to the cutting unit, the hole milling unit, the surface milling unit, the rack, the hole milling unit and the surface milling unit in sequence in a clockwise direction.

[0012] Preferably, when the clamping head does not clamp the lock core workpiece, there is a gap between the clamping head and the arc-shaped clamping plate, the gap length is a, and there is also a gap between the gear ring and the bottom of the T-slot, the gap length is b, a<b.

[0013] Beneficial effects of the present invention:

[0014] The automotive lock core milling and beveling device provided by this invention utilizes six rotating stations in conjunction with six clamping assemblies to achieve efficient multi-station collaborative machining. It can simultaneously complete truncation, double-sided milling, and beveling of multiple lock core workpieces, significantly improving production efficiency. Its adaptive flipping clamping design utilizes a T-shaped connecting rod and a spring-actuated mechanism to automatically flip the workpiece under rack drive, completely eliminating the blind spots caused by traditional clamping and significantly improving machining accuracy. The device achieves clamping protection through a preset gap (a < b) and bidirectional lead screw control. During flipping, it maintains elastic preload to prevent loosening, and during machining, it switches to rigid clamping to ensure stability, achieving both safety and machining quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] in:

[0017] Figure 1 Schematic diagram of the overall internal structure of the milling chamber of the present invention;

[0018] Figure 2 for Figure 1 A magnified schematic diagram of the structure at A in the middle;

[0019] Figure 3 for Figure 1 A magnified schematic diagram of the structure at B in the middle;

[0020] Figure 4 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 5 Schematic diagram of the connection structure of the clamping assembly and the displacement assembly in the present invention;

[0022] Figure 6 for Figure 5 A magnified schematic diagram of the structure at position C in the middle;

[0023] Figure 7 Schematic diagram of the connection structure of the flip assembly in the present invention;

[0024] Figure 8 for Figure 7 A magnified schematic diagram of the structure at position D in the middle.

[0025] In the picture:

[0026] 1. Milling chamber; 2. Hexagonal rotating station;

[0027] 3. Clamping assembly; 31. Base; 32. Slide; 33. Bidirectional screw; 34. Closing plate; 35. Slider; 36. Arc-shaped clamping plate; 37. Clamping head; 38. Concave groove;

[0028] 4. Displacement assembly; 41. Bottom plate; 42. Guide groove; 43. Moving frame; 44. Electric push rod No. 1; 45. Electric push rod No. 2;

[0029] 5. Cutting unit; 6. Milling unit; 7. Surface milling unit;

[0030] 8. Flip assembly; 81. Rack; 82. T-slot; 83. T-shaped connecting rod; 84. Clamping spring; 85. Gear ring

[0031] 9. Ring frame; 100. Lock core workpiece. DETAILED DESCRIPTION

[0032] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example

[0033] like Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, a milling slot and bevel milling device for automobile lock cylinders includes a hexagonal rotating station 2, on which six groups of clamping assemblies 3 are provided. The clamping assembly 3 includes an arc-shaped clamping plate 36, and a clamping head 37 is provided at the end of the arc-shaped clamping plate 36. The clamping head 37 is provided with a concave groove 38 for clamping the lock cylinder workpiece 100. The arc-shaped clamping plate 36 is rotatably connected to the clamping head 37 through a flip assembly 8. The flip assembly 8 includes a T-shaped slot 82, which is provided at the arc-shaped clamping plate. In the plate 36, a T-shaped connecting rod 83 is slidably engaged in the T-shaped groove 82. One end of the T-shaped connecting rod 83 extends out of the arc-shaped clamping plate 36 and is fixedly connected to the clamping head 37. The other end of the T-shaped connecting rod 83 abuts against the tightening spring 84. The other end of the tightening spring 84 is fixedly connected to one end of the T-shaped groove 82. A gear ring 85 is provided on the end of the T-shaped connecting rod 83 close to the tightening spring 84. The gear ring 85 is driven by the rack 81 to drive the clamping head 37 and the lock core workpiece 100 to rotate.

[0034] The hexagonal rotating station 2 is arranged in the milling chamber 1 and is driven to rotate by an external motor;

[0035] When the clamping head 37 does not clamp the lock core workpiece 100, there is a gap between the clamping head 37 and the arc-shaped clamping plate 36, and the gap length is a. At the same time, there is also a gap between the gear ring 85 and the bottom of the T-shaped groove 82, and the gap length is b, a<b.

[0036] In this embodiment, when the hexagonal rotating station 2 rotates to the rack 81, the motor first drives the bidirectional screw 33 to reverse, so that the clamping head 37 moves back a distance (this distance is a preset distance, which makes the clamping spring 84 have elastic force, and has a thrust to push the T-shaped connecting rod 83, so that the T-shaped connecting rod 83 drives the clamping head 37 to temporarily clamp the lock core workpiece 100 through the thrust of the clamping spring 84), and then the rack 81 extends into the arc-shaped clamping plate 36, and at the same time the rack 81 and the gear ring 85 are engaged. At this time, the gear ring 85 rotates, and when the gear ring 85 rotates, it drives the T-shaped connecting rod 83 and the clamping head 37 to rotate, and the clamping head 37 drives the clamped lock core The workpiece 100 rotates, and after rotating to a preset angle, the lock core workpiece 100 reaches the appropriate position, and then the rack 81 is driven upward by the displacement assembly 4, so that the rack 81 and the gear ring 85 are no longer engaged, and the rack 81 leaves the arc-shaped clamping plate 36. Due to the elastic force of the clamping spring 84, the clamping head 37 and the lock core workpiece 100 will not rotate at will after adjusting the angle, because the elastic force of the clamping spring 84 can play a basic limiting role, and then the motor drives the bidirectional screw rod 33 to rotate, and the bidirectional screw rod 33 drives the clamping head 37 again to clamp the lock core workpiece 100, thereby completing the flipping of the lock core workpiece 100, or adjusting the lock core workpiece 100 to the appropriate position.

[0037] It should be noted that when the clamping head 37 is not clamping the lock core workpiece 100, there is a gap between the clamping head 37 and the arc-shaped clamping plate 36, and the length of the gap is a. At the same time, there is also a gap between the toothed ring 85 and the bottom of the T-shaped slot 82, and the length of the gap is b, a<b; when the clamping head 37 clamps the lock core workpiece 100 again, the clamping head 37 is subjected to pressure, and at this time the clamping head 37 drives the T-shaped connecting rod 83 to move toward the arc-shaped clamping plate 36, but because a<b, the clamping head 37 will first contact the arc-shaped clamping plate 36, thereby forming a clamping force.

[0038] like Figure 1 、 Figure 2 、 Figure 5 and Figure 6 As shown, the clamping assembly 3 also includes a base 31, which is fixedly connected to the hexagonal rotating station 2. A slide groove 32 is provided on the base 31, and a pair of sliders 35 are slidably connected in the slide groove 32. The opposite surfaces of the two sliders 35 are provided with mutually offset sealing plates 34, and an arc-shaped clamping plate 36 is fixedly connected to the slider 35. A bidirectional screw rod 33 slides through the middle of the slider 35, and the bidirectional screw rod 33 is connected to the slide groove 32 by the bracket. The bidirectional screw rod 33 is driven by a motor. When the bidirectional screw rod 33 rotates, it can control the left and right sliders 35 to slide toward or away from each other.

[0039] In this embodiment, the lock core workpiece 100 is transported by an external fixed-length conveying device, and the lock core workpiece 100 is transported to the position of the clamping assembly 3. The moving lock core workpiece 100 will push out the milled lock core workpiece 100 to complete the unloading. At the same time, this position is the cutting unit 5 workstation. Then the motor drives the bidirectional screw 33 to rotate. Since the shape of the slide groove 32 limits the slider 35, the bidirectional screw 33 can drive the sliders 35 on the left and right sides to move toward each other when it rotates. The slider 35 drives the clamping head 37 through the arc-shaped clamping plate 36 to clamp the lock core workpiece 100, and then the cutting unit 5 cuts the lock core workpiece 100 into a preset length.

[0040] It should be noted that the concave groove 38 of the clamping head 37 can match the special shape of the lock core workpiece 100, so that the clamping fitting area is large and the stability is high. At the same time, when processing lock core workpieces 100 of different specifications in the later stage, the clamping head 37 can be replaced as needed.

[0041] like Figure 1 、 Figure 3 and Figure 4 As shown, an annular frame 9 is provided on the periphery of the hexagonal rotating station 2, and the annular frame 9 is fixedly connected to the inner wall of the milling chamber 1. A displacement assembly 4 corresponding to the clamping assembly 3 is provided on the inner side of the annular frame 9;

[0042] The displacement assembly 4 includes a base plate 41, which is fixedly connected to the inner wall of the annular frame 9. The base plate 41 is provided with a guide groove 42, and a movable frame 43 is slidably connected in the guide groove 42. The movable frame 43 is driven by a first electric push rod 44 to slide in the guide groove 42. A second electric push rod 45 is fixedly connected to the movable frame 43.

[0043] There are six groups of No. 2 electric push rods 45, one group of which is fixedly connected to the cutting unit 5, two groups of which are fixedly connected to the No. 2 electric push rods 45, two groups of which are fixedly connected to the No. 2 electric push rods 45, and one group of which is fixedly connected to the No. 2 electric push rods 45. The rack 81 is fixedly connected to the cutting unit 5, the milling unit 6 and the milling unit 7 are all existing technologies and will not be elaborated here.

[0044] The six groups of second electric push rods 45 are sequentially connected with the cutting unit 5 , the hole milling unit 6 , the surface milling unit 7 , the rack 81 , the hole milling unit 6 and the surface milling unit 7 in a clockwise direction.

[0045] In this embodiment, the No. 1 electric push rod 44 of the displacement assembly 4 can push the movable frame 43 to slide in the guide groove 42, so that the No. 2 electric push rod 45 on the movable frame 43 drives the corresponding unit equipment to adjust its position laterally, and at the same time, the No. 2 electric push rod 45 drives the corresponding unit equipment to adjust its position longitudinally. The cooperation of the two can enable the unit equipment to mill the lock core workpiece 100.

[0046] First, the lock core workpiece 100 is fed in by an external fixed-length conveying device and then clamped by the clamping assembly 3. Then the cutting unit 5 cuts the lock core workpiece 100 into a preset length. At this time, the single lock core workpiece 100 is clamped by the clamping assembly 3. Then the hexagonal rotating station 2 drives the lock core workpiece 100 to rotate 60 degrees to the first milling unit 6. Then the milling unit 6 performs milling on the outward surface of the lock core workpiece 100. Then the hexagonal rotating station 2 rotates 60 degrees again to the first milling unit 7. The milling unit 7 performs milling on the outward surface of the lock core workpiece 100. Then the hexagonal rotating station 2 rotates 60 degrees again to the first milling unit 7. The milling unit 7 performs milling on the outward surface of the lock core workpiece 100. The edge rotation station 2 rotates 60 degrees again to reach the rack 81. First, the motor drives the bidirectional screw 33 to reverse, so that the clamping head 37 moves back a distance, and then the rack 81 extends into the arc-shaped clamping plate 36. At the same time, the rack 81 and the gear ring 85 engage. At this time, the gear ring 85 rotates. When the gear ring 85 rotates, it drives the T-shaped connecting rod 83 and the clamping head 37 to rotate. The clamping head 37 drives the clamped lock core workpiece 100 to rotate. After rotating to the preset angle, the lock core workpiece 100 reaches the appropriate position, and then the rack 81 is driven upward by the displacement component 4, so that the rack 81 and the gear ring 85 are engaged. The rack 81 is no longer engaged, and leaves the arc-shaped clamping plate 36. Due to the elastic force of the holding spring 84, the clamping head 37 and the lock core workpiece 100 will not rotate arbitrarily after adjusting the angle, because the elastic force of the holding spring 84 can play a basic limiting role. Then the motor drives the bidirectional screw 33 to rotate, and the bidirectional screw 33 drives the clamping head 37 again to clamp the lock core workpiece 100, thereby completing the flipping of the lock core workpiece 100. Then the hexagonal rotating station 2 drives the lock core workpiece 100 to rotate 60 degrees to the second milling unit 6, and then the milling unit 6 presses the lock core workpiece 100. The outward-facing surface is milled, and then the hexagonal rotary station 2 rotates another 60 degrees to reach the second milling unit 7. The milling unit 7 mills the outward-facing surface of the lock core workpiece 100. At this point, the processing of the lock core workpiece 100 is completed, and then the hexagonal rotary station 2 drives the lock core workpiece 100 to rotate 60 degrees and return to the cutting unit 5. At the same time, the clamping component 3 releases the lock core workpiece 100. When the external fixed-length conveying equipment feeds the lock core workpiece 100 in, it pushes the processed lock core workpiece 100 on the clamping component 3 away, and then starts processing the next lock core workpiece 100.

[0047] In the above process, since the traditional equipment is clamping and processing the lock core workpiece 100, part of the lock core workpiece 100 is not processed due to the obstruction of the clamping components. The subsequent user needs to manually loosen the clamping components to adjust the lock core workpiece 100, which has low work efficiency and is not suitable for batch processing.

[0048] In the above embodiments, the relevant semi-automatic and automated equipment are all controlled by circuits of external systems, which will not be elaborated in this application.

[0049] The workflow is as follows:

[0050] The lock core workpiece 100 is transported by an external fixed-length conveying device and transported to the position of the clamping component 3. The moving lock core workpiece 100 will push out the milled lock core workpiece 100 to complete the unloading. At the same time, this position is the cutting unit 5 workstation. Then the motor drives the bidirectional screw 33 to rotate. Since the shape of the slide groove 32 limits the slider 35, the bidirectional screw 33 can drive the sliders 35 on the left and right sides to move towards each other when it rotates. The slider 35 drives the clamping head 37 through the arc-shaped clamping plate 36 to clamp the lock core workpiece 100. Then the cutting unit 5 cuts the lock core workpiece 100 to a preset length. At this time, the single lock core workpiece 100 is clamped by the clamping assembly 3, and then the hexagonal rotating station 2 drives the lock core workpiece 100 to rotate 60 degrees to reach the first milling unit 6, and then the milling unit 6 performs milling on the outward surface of the lock core workpiece 100, and then the hexagonal rotating station 2 rotates 60 degrees again to reach the first milling unit 7, and the milling unit 7 performs milling on the outward surface of the lock core workpiece 100, and then the hexagonal rotating station 2 rotates 60 degrees again to reach the rack 81, and the rack 81 drives the clamping head 37 and the lock core workpiece 100 to rotate the opposite side. At this time, the other side of the lock core workpiece 100 faces outward, and then the hexagonal rotating station 2 drives the lock core workpiece 100 to rotate 6 0 degrees arrives at the second milling unit 6, and then the milling unit 6 mills the outward surface of the lock core workpiece 100, and then the hexagonal rotating station 2 rotates 60 degrees again to reach the second milling unit 7, and the milling unit 7 mills the outward surface of the lock core workpiece 100. At this point, the processing of the lock core workpiece 100 is completed, and then the hexagonal rotating station 2 drives the lock core workpiece 100 to rotate 60 degrees and return to the cutting unit 5. At the same time, the clamping assembly 3 releases the lock core workpiece 100, and when the external fixed-length conveying equipment sends the lock core workpiece 100 in, it pushes away the processed lock core workpiece 100 on the clamping assembly 3, and then starts processing the next lock core workpiece 100.

[0051] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for milling slots and bevels of a car lock core, comprising a hexagonal rotating station (2), characterized in that: Six groups of clamping assemblies (3) are provided on the hexagonal rotating station (2), and the clamping assembly (3) includes an arc-shaped clamping plate (36), and a clamping head (37) is provided at the end of the arc-shaped clamping plate (36). The clamping head (37) is provided with a concave groove (38) for matching the clamping lock core workpiece (100). The arc-shaped clamping plate (36) is rotatably connected to the clamping head (37) through a flip assembly (8), and the flip assembly (8) includes a T-shaped groove (82). The T-shaped groove (82) is provided in the arc-shaped clamping plate (36), and the T-shaped groove (82) slides in the T-shaped groove (82). A T-shaped connecting rod (83) is engaged, one end of the T-shaped connecting rod (83) extends out of the arc-shaped clamping plate (36) and is fixedly connected to the clamping head (37), the other end of the T-shaped connecting rod (83) is in contact with the tightening spring (84), the other end of the tightening spring (84) is fixedly connected to one end of the T-shaped groove (82), and a gear ring (85) is provided on one end of the T-shaped connecting rod (83) close to the tightening spring (84), and the gear ring (85) is driven by the rack (81) to drive the clamping head (37) and the lock core workpiece (100) to rotate; When the clamping head (37) does not clamp the lock core workpiece (100), a gap exists between the clamping head (37) and the arc-shaped clamping plate (36), and the gap length is a. At the same time, a gap also exists between the gear ring (85) and the bottom of the T-shaped groove (82), and the gap length is b, where a<b; An annular frame (9) is provided on the periphery of the hexagonal rotating station (2), the annular frame (9) is fixedly connected to the inner wall of the milling chamber (1), and a displacement assembly (4) corresponding to the clamping assembly (3) is provided on the inner side of the annular frame (9); The displacement assembly (4) includes a base plate (41), the base plate (41) is fixedly connected to the inner wall of the annular frame (9), a guide groove (42) is provided on the base plate (41), a movable frame (43) is slidably connected in the guide groove (42), the movable frame (43) is driven by a No. 1 electric push rod (44) to slide in the guide groove (42), and a No. 2 electric push rod (45) is fixedly connected to the movable frame (43); There are six groups of No. 2 electric push rods (45), one group of which is fixedly connected to a cutting unit (5), two groups of which are fixedly connected to a milling unit (6), two groups of which are fixedly connected to a milling unit (7), and one group of which is fixedly connected to a rack (81).

2. The automobile lock core milling groove and bevel milling device as claimed in claim 1, characterized in that: The hexagonal rotating station (2) is arranged in the milling chamber (1), and the hexagonal rotating station (2) is driven to rotate by an external motor.

3. The device for milling slots and bevels of a car lock cylinder as claimed in claim 1, characterized in that: The clamping assembly (3) further comprises a base (31), the base (31) being fixedly connected to the hexagonal rotating station (2), the base (31) being provided with a slide groove (32), a pair of sliders (35) being slidably connected in the slide groove (32), mutually offset sealing plates (34) being provided on opposite surfaces of the two sliders (35), an arc-shaped clamping plate (36) being fixedly connected to the sliders (35), a bidirectional screw rod (33) slidingly passing through the middle of the slider (35), the bidirectional screw rod (33) being rotatably connected to the slide groove (32) by a bracket, the bidirectional screw rod (33) being driven by a motor, and the bidirectional screw rod (33) can control the left and right sliders (35) to slide toward or away from each other when rotating.

4. The device for milling grooves and bevels of a car lock cylinder as claimed in claim 1, characterized in that: The six groups of No. 2 electric push rods (45) are connected in clockwise order to the cutting unit (5), the hole milling unit (6), the surface milling unit (7), the rack (81), the hole milling unit (6) and the surface milling unit (7).

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