High-precision depth-adjustable flat-bottom chambering milling cutter

Abstract

The utility model relates to the technical field of flat-bottom chambering milling cutters, in particular to a high-precision depth-adjustable flat-bottom chambering milling cutter which comprises a milling machine used for installing the flat-bottom chambering milling cutter, the top of the milling machine is fixedly connected with a telescopic cylinder, and the inner wall of the telescopic cylinder is slidably connected with a sliding rod. The bottom end of the sliding rod penetrates through the milling machine and is fixedly connected with a motor, and a tool bit of the flat-bottom milling cutter is fixedly connected to an output shaft of the motor. An adjusting mechanism; according to the device, through the first gear and the second gear, the lead screw drives the sliding rod, the motor and the flat-bottom milling cutter to move slowly, then the cutting depth of the flat-bottom milling cutter to a workpiece can be accurately adjusted, the flat-bottom milling cutter is stable after being adjusted through the lead screw, it is guaranteed that the flat-bottom milling cutter cannot move in the cutting process, and the machining precision is improved. The cutting effect of the flat-bottom milling cutter on a workpiece is guaranteed, the specific downward moving distance of the flat-bottom milling cutter is observed through the elastic cushion, the indicating block and the scale marks, and the descending depth of the flat-bottom milling cutter can be conveniently and accurately known.

Description

Technical Field

[0001] The utility model relates to the technical field of flat-bottom reaming cutters, and particularly relates to a high-precision flat-bottom reaming cutter with adjustable depth. Background Art

[0002] A flat-bottom reaming cutter is a cutting tool specifically designed for metal processing, usually used on a milling machine. It is mainly used to enlarge the existing hole diameter on a workpiece and can generate a flat hole bottom surface at the same time. During cutting, the flat-bottom reaming cutter needs to adjust the cutting depth according to requirements to achieve precise control of the hole depth. The characteristic of this reaming cutter is that its bottom is designed as a plane instead of a sharp point or arc, so a flat bottom can be formed during reaming, which is very useful in occasions where screws, pins or other flat-bottom holes are required.

[0003] After retrieval, the Chinese patent "A carbide milling cutter processing device for conveniently adjusting the cutting depth" with the authorization announcement number "CN218109997U" realizes the adjustment of the cutting depth of the cutting main body by adjusting the telescopic rod and the horizontal angle plate, and the operation of adjusting the cutting depth of the milling cutter is simple.

[0004] The above-mentioned method of adjusting the cutting depth of the milling cutter by extending the telescopic rod is prone to displacement of the milling cutter during operation without locking the adjusted milling cutter because the milling cutter generates a large vibration force during cutting, which will affect the cutting effect on the workpiece.

[0005] Therefore, a high-precision flat-bottom reaming cutter with adjustable depth is proposed to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a high-precision flat-bottom reaming cutter with adjustable depth to solve the above problems and improve the problem that the milling cutter is prone to displacement during operation.

[0007] The present utility model realizes the above object through the following technical solutions. A flat-bottom reaming cutter with high precision and adjustable depth includes: a milling machine for installing the flat-bottom milling cutter. A telescopic cylinder is fixedly connected to the top of the milling machine. A sliding rod is slidably connected to the inner wall of the telescopic cylinder. The bottom end of the sliding rod penetrates through the milling machine and is fixedly connected to a motor. The cutter head of the flat-bottom milling cutter is fixedly connected to the output shaft of the motor; an adjusting mechanism is arranged on the surface of the telescopic cylinder. Among them, the adjusting mechanism includes a lead screw rotatably connected to the inner wall of the telescopic cylinder. The surface of the lead screw is threadedly connected to the inner wall of the sliding rod. The top end of the lead screw is fixedly connected to a first gear. The surface of the first gear is meshed with a second gear. A turning handle is rotatably connected to the top end of the telescopic cylinder. The lower end of the surface of the turning handle is fixedly connected to the inner wall of the second gear. Through the first gear and the second gear, the lead screw drives the sliding rod, the motor and the flat-bottom milling cutter to move slowly, and thus the cutting depth of the flat-bottom milling cutter on the workpiece can be accurately adjusted. Through the lead screw, the stability after the adjustment of the flat-bottom milling cutter is achieved, ensuring that the flat-bottom milling cutter will not displace during cutting and ensuring the cutting effect of the flat-bottom milling cutter on the workpiece.

[0008] Preferably, an elastic pad is fixedly connected to the upper end of the surface of the sliding rod. A sliding hole is formed on the surface of the telescopic cylinder. One side of the elastic pad is fixedly connected to an indicating block. Scale lines are arranged on the surface of the telescopic cylinder. Through the elastic pad, the indicating block and the scale lines, the observation of the specific distance of the downward movement of the flat-bottom milling cutter is realized, facilitating accurately knowing the descending depth of the flat-bottom milling cutter.

[0009] Preferably, an expanding block is rotatably connected to the inner wall of the elastic pad. The surface of the expanding block is rotatably connected to the inner wall of the indicating block.

[0010] Preferably, a screw rod is slidably connected to the inner wall of the expanding block. The surface of the screw rod is threadedly connected to the inner wall of the indicating block.

[0011] Preferably, the elastic pad is a rubber component.

[0012] Preferably, both sides of the indicating block are in a "V" shape.

[0013] Preferably, a movable block is fixedly connected to the upper end of the surface of the screw rod. The surface of the movable block is slidably connected to the inner wall of the expanding block. Through the movable rod, the screw rod and the indicating block, it is realized that the screw rod drives the expanding block to rotate during rotation, causing the elastic pad to deform, and both sides of the elastic pad to abut against the inner wall of the sliding hole, thereby realizing the locking of the sliding rod, ensuring the stability of the sliding rod in the telescopic cylinder, and ensuring the stability of the flat-bottom milling cutter after the depth adjustment.

[0014] Preferably, a fixed block is fixedly connected to one side of the indicating block.

[0015] Preferably, a limiting rod is fixedly connected to the inner wall of the telescopic cylinder, and the upper end of the inner wall of the sliding rod is slidably connected to the surface of the limiting rod. Through the limiting rod, the limit of the sliding rod during movement is realized, ensuring the stability of the sliding rod during movement.

[0016] Preferably, one end of the surface of the expansion block is elliptical.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. Through the first gear and the second gear, the lead screw drives the sliding rod, the motor and the end mill to move slowly, and thus the cutting depth of the end mill on the workpiece can be accurately adjusted. Through the lead screw, the stability after the adjustment of the end mill is realized, ensuring that the end mill will not displace during cutting, and ensuring the cutting effect of the end mill on the workpiece. Through the elastic pad, the indicating block and the scale line, the observation of the specific distance of the downward movement of the end mill is realized, facilitating the accurate knowledge of the descending depth of the end mill;

[0019] 2. Through the movable rod, the screw rod and the indicating block, the screw rod drives the expansion block to rotate during rotation, causing the elastic pad to deform, and the two sides of the elastic pad to abut against the inner wall of the sliding hole, thereby realizing the locking of the sliding rod, ensuring the stability of the sliding rod in the telescopic cylinder, and ensuring the stability after the depth adjustment of the end mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 is a schematic diagram of the adjusting mechanism structure of the present utility model;

[0022] Figure 3 is a cross-sectional view of the telescopic cylinder of the present utility model;

[0023] Figure 4 is Figure 3 an enlarged view of A in

[0024] In the figure: 1, milling machine; 2, telescopic cylinder; 3, sliding rod; 4, motor; 5, end mill; 6, adjusting mechanism; 61, lead screw; 62, first gear; 63, second gear; 64, turning handle; 65, elastic pad; 66, indicating block; 67, expansion block; 68, screw rod; 69, fixed block; 610, limiting rod; 611, movable block; 612, sliding hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0026] During specific implementation: As Figures 1 - 4 shown, a flat-bottom reaming cutter with high precision and adjustable depth includes: a milling machine 1 for installing a flat-bottom milling cutter 5. The top of the milling machine 1 is fixedly connected with a telescopic cylinder 2. A slide bar 3 is slidably connected to the inner wall of the telescopic cylinder 2. The bottom end of the slide bar 3 penetrates through the milling machine 1 and is fixedly connected with a motor 4. The cutter head of the flat-bottom milling cutter 5 is fixedly connected to the output shaft of the motor 4; an adjusting mechanism 6 is arranged on the surface of the telescopic cylinder 2. Among them, the adjusting mechanism 6 includes a lead screw 61 rotatably connected to the inner wall of the telescopic cylinder 2. The surface of the lead screw 61 is threadedly connected to the inner wall of the slide bar 3. The top end of the lead screw 61 is fixedly connected with a first gear 62. The surface of the first gear 62 is meshed and connected with a second gear 63. The top end of the telescopic cylinder 2 is rotatably connected with a turning handle 64. The lower end of the surface of the turning handle 64 is fixedly connected to the inner wall of the second gear 63. The upper end of the surface of the slide bar 3 is fixedly connected with an elastic pad 65. A slide hole 612 is formed in the surface of the telescopic cylinder 2. One side of the elastic pad 65 is fixedly connected with an indicating block 66. A scale line is arranged on the surface of the telescopic cylinder 2. A limiting rod 610 is fixedly connected to the inner wall of the telescopic cylinder 2. The upper end of the inner wall of the slide bar 3 is slidably connected to the surface of the limiting rod 610.

[0027] A workbench is slidably connected to the top of the milling machine 1. Electric push rods are fixedly connected to both sides of the top of the workbench. The telescopic ends of the electric push rods are fixedly connected with clamping blocks.

[0028] When it is necessary to adjust the cutting depth of the flat milling cutter 5, turn the rotary handle 64. The rotation of the rotary handle 64 drives the second gear 63 to rotate. Since the diameter of the second gear 63 is smaller than that of the first gear 62, and the specific gear diameter ratio is selected according to actual requirements, the rotation of the second gear 63 drives the first gear 62 to rotate slowly. The slow rotation of the first gear 62 drives the lead screw 61 to rotate slowly. The slow rotation of the lead screw 61 drives the slide bar 3, the motor 4 and the flat milling cutter 5 to move down gently. The gentle downward movement of the slide bar 3 drives the elastic pad 65 and the indicating block 66 to move down gently. The specific depth of the descent of the slide bar 3 can be known through the scale line on the telescopic cylinder 2. After the flat milling cutter 5 descends to the accurate depth, stop turning the rotary handle 64. At this time, place the workpiece on the workbench and clamp the workpiece through the cooperation of the electric push rod and the clamping block. Then manually turn on the motor 4. The output shaft of the motor 4 rotates to drive the flat milling cutter 5 to rotate. The rotating flat milling cutter 5 stably cuts a hole with a corresponding depth in the workpiece. By driving the workbench to move on the milling machine 1, the hole cut by the flat milling cutter 5 in the workpiece can be enlarged. The specific way to drive the workbench to move is selected according to actual requirements.

[0029] As Figure 4 shown, an expansion block 67 is rotatably connected to the inner wall of the elastic pad 65. The surface of the expansion block 67 is rotatably connected to the inner wall of the indicating block 66. A screw rod 68 is slidably connected to the inner wall of the expansion block 67. The surface of the screw rod 68 is threadedly connected to the inner wall of the indicating block 66. The upper end of the surface of the screw rod 68 is fixedly connected to a movable block 611. The surface of the movable block 611 is slidably connected to the inner wall of the expansion block 67. A fixed block 69 is fixedly connected to one side of the indicating block 66. One end of the surface of the expansion block 67 is elliptical. The elastic pad 65 is a rubber component. Both sides of the indicating block 66 are in a "V" shape.

[0030] After the slide bar 3 descends to the corresponding position, turn the screw rod 68. The screw rod 68 moves while rotating on the indicating block 66. The screw rod 68 moves within the expansion block 67. Due to the action of the movable block 611, the screw rod 68 drives the expansion block 67 to rotate. The expansion block 67 rotates within the elastic pad 65. Since the elastic pad 65 is a rubber component, the elastic pad 65 has good elasticity and deforms. When the expansion block 67 rotates and abuts against the fixed block 69, stop turning the screw rod 68, so that the surface of the elastic pad 65 abuts against the inner wall of the sliding hole 612, and the slide bar 3 is locked within the telescopic cylinder 2.

[0031] When the utility model is in use, rotate the handle 64. Since the diameter of the second gear 63 is smaller than that of the first gear 62, and the specific gear diameter ratio is selected according to actual requirements, the rotation of the handle 64 drives the screw rod 61 to rotate slowly through the second gear 63 and the first gear 62. The slow rotation of the screw rod 61 drives the slide bar 3, the motor 4 and the end mill 5 to move down gently. The gentle downward movement of the slide bar 3 drives the elastic pad 65 and the indicating block 66 to move down gently. The specific depth of the descent of the slide bar 3 can be known through the scale line on the telescopic cylinder 2. After the end mill 5 descends to the accurate depth, stop rotating the handle 64 and rotate the screw 68. Due to the action of the movable block 611, the screw 68 drives the expansion block 67 to rotate. The expansion block 67 rotates within the elastic pad 65. Since the elastic pad 65 is a rubber component, the elastic pad 65 has good elasticity, causing the elastic pad 65 to deform. When the expansion block 67 rotates and abuts against the fixed block 69, stop rotating the screw 68, making the surface of the elastic pad 65 abut against the inner wall of the sliding hole 612, locking the slide bar 3 within the telescopic cylinder 2. At this time, drive the end mill 5 to stably cut a hole with a corresponding depth in the workpiece.

[0032] It should be noted that in the above description, the milling machine 1, the electric push rod, the motor 4, the end mill 5, etc. are all devices with relatively mature applications in the prior art. The specific models can be selected according to actual needs. At the same time, the power supply for the electric push rod and the motor 4 can be an internal power supply or a mains power supply. The specific power supply method is selected according to the situation and will not be elaborated here.

[0033] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flat-bottom reaming cutter with high precision and adjustable depth, characterized in that, Including: A milling machine (1) for installing a face mill (5), a telescopic cylinder (2) is fixedly connected to the top of the milling machine (1), a sliding rod (3) is slidably connected to the inner wall of the telescopic cylinder (2), the bottom end of the sliding rod (3) penetrates through the milling machine (1) and is fixedly connected to a motor (4), and the cutter head of the face mill (5) is fixedly connected to the output shaft of the motor (4); An adjusting mechanism (6), the adjusting mechanism (6) is arranged on the surface of the telescopic cylinder (2); Wherein, the adjusting mechanism (6) includes a lead screw (61) rotatably connected to the inner wall of the telescopic cylinder (2), the surface of the lead screw (61) is threadedly connected to the inner wall of the sliding rod (3), the top end of the lead screw (61) is fixedly connected to a first gear (62), the surface of the first gear (62) is meshed with a second gear (63), a turning handle (64) is rotatably connected to the top end of the telescopic cylinder (2), and the lower end of the surface of the turning handle (64) is fixedly connected to the inner wall of the second gear (63).

2. The high-precision adjustable-depth flat-bottom reaming cutter according to claim 1, wherein: An elastic pad (65) is fixedly connected to the upper end of the surface of the sliding rod (3), a sliding hole (612) is formed on the surface of the telescopic cylinder (2), an indicating block (66) is fixedly connected to one side of the elastic pad (65), and scale lines are arranged on the surface of the telescopic cylinder (2).

3. The high-precision adjustable-depth flat-bottom reaming cutter according to claim 2, characterized in that: An expansion block (67) is rotatably connected to the inner wall of the elastic pad (65), and the surface of the expansion block (67) is rotatably connected to the inner wall of the indicating block (66).

4. The high-precision adjustable-depth flat-bottom reaming cutter according to claim 3, wherein: A screw rod (68) is slidably connected to the inner wall of the expansion block (67), and the surface of the screw rod (68) is threadedly connected to the inner wall of the indicating block (66).

5. The high-precision adjustable-depth flat-bottom reaming cutter according to claim 2, characterized in that: The elastic pad (65) is a rubber member.

6. The high-precision adjustable-depth flat-bottom reaming cutter according to claim 2, wherein: Both sides of the indicating block (66) are in a "V" shape.

7. A flat-bottom reaming cutter with high precision and adjustable depth according to claim 4, characterized in that: An active block (611) is fixedly connected to the upper end of the surface of the screw rod (68), and the surface of the active block (611) is slidably connected to the inner wall of the expansion block (67).

8. A flat-bottom reaming cutter with high precision and adjustable depth according to claim 3, characterized in that: A fixed block (69) is fixedly connected to one side of the indicating block (66).

9. A flat-bottom reaming cutter with high precision and adjustable depth according to claim 1, characterized in that: A limiting rod (610) is fixedly connected to the inner wall of the telescopic cylinder (2), and the upper end of the inner wall of the sliding rod (3) is slidably connected to the surface of the limiting rod (610).

10. A flat-bottom reaming cutter with high precision and adjustable depth according to claim 3, characterized in that: One end of the surface of the expansion block (67) is elliptical.

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