Milling blade fixing device

Abstract

The utility model relates to the field of milling cutter blade machining, in particular to a milling cutter blade fixing device which comprises a machine frame, a lower limiting seat, an upper limiting seat, a rotary disc, an elastic guide rod, a screw rod and a limiting rod, the lower limiting seat is rotationally connected to the lower end of the machine frame, and the limiting rod is in threaded connection to the upper end of the machine frame. The rotating disc is rotationally arranged at the upper end of the rack and is limited to rotate through the lifting limiting rod, the elastic guide rods are elastically and slidably arranged on the two sides of the middle of the rotating disc, the lower ends of the elastic guide rods are connected with the upper limiting seat, the screw rod is in threaded connection with the middle of the rotating disc and located at the upper end of the upper limiting seat, and a protrusion is arranged at the upper end of the lower limiting seat. The bulge is matched with an inner hole of the milling blade and comprises a circular ring part and a limiting part, and a groove matched with the bulge is formed in the lower end of the upper limiting seat, so that the defect that the position needs to be adjusted for multiple times in the traditional outer side clamping process is overcome, the cylindrical grinding of the milling blade is completed at a time, and the machining efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter processing, and specifically to a milling cutter fixing device. Background Technology

[0002] In the manufacturing process of milling inserts, the grinding process is crucial for ensuring the dimensional accuracy and surface quality of the inserts. Especially during external cylindrical grinding, precise positioning and secure clamping of the inserts are essential. Currently, the common practice is to use centers, chucks, and other fixtures to clamp the inserts from the outside in. However, this method has significant drawbacks. Due to the limited clamping range of centers and chucks, after grinding a certain distance, the fixture must be loosened, the clamping position of the insert adjusted, and then it re-fixed before grinding can continue. Repeatedly loosening, adjusting, fixing, and grinding not only significantly prolongs processing time but also leads to low overall operational efficiency. Furthermore, the repeated disassembly and reassembly make it difficult to guarantee absolute positioning accuracy each time, which can affect the dimensional accuracy and surface quality of the external cylindrical grinding of the inserts, increasing the scrap rate and production costs. Therefore, there is an urgent need for a device that can efficiently and precisely fix milling inserts to meet the actual needs of milling insert processing. Utility Model Content

[0003] This utility model provides a milling cutter fixing device to solve the problems of the prior art.

[0004] The objective of this utility model can be achieved through the following technical solution: A milling cutter fixing device includes: a frame, a lower limit seat, an upper limit seat, a turntable, an elastic guide rod, a screw, and a limiting rod. The lower limit seat is rotatably connected to the lower end of the frame, and the limiting rod is threadedly connected to the upper end of the frame. The turntable is rotatably disposed at the upper end of the frame and its rotation is restricted by the liftable limiting rod. The elastic guide rod is elastically slidably disposed on both sides of the middle part of the turntable. The lower end of the elastic guide rod is connected to the upper limit seat. The screw is threadedly connected to the middle part of the turntable and located at the upper end of the upper limit seat. The upper end of the lower limit seat is provided with a protrusion, which is configured to cooperate with the inner hole of the milling cutter. The protrusion includes an annular part and a limiting part. The lower end of the upper limit seat is provided with a groove matching the protrusion.

[0005] In a further improvement, two sets of elastic guide rods are symmetrically arranged. Each elastic guide rod includes a sliding rod and a spring. The body of the sliding rod passes through the turntable and its lower end is threadedly fixed to the upper limit seat. The spring is sleeved on the rod body and located between the rod head of the sliding rod and the turntable.

[0006] In a further improvement, the turntable includes an upper disc, a lower disc, and a middle disc. The upper end of the frame is provided with a through hole. The diameter of the middle disc is equal to the diameter of the through hole. The diameters of the upper disc and the lower disc are greater than the diameter of the through hole. The middle disc is located inside the through hole. The upper disc, the middle disc, and the lower disc are connected in sequence by fixing bolts. The fixing bolts are located inside the through hole. The upper disc is provided with a limiting insertion hole. The upper end of the frame is provided with a fixing frame. The limiting rod is threaded to the fixing frame and its lower end is matched and inserted into the limiting insertion hole.

[0007] In a further improvement, four sets of fixing bolts are provided, and four sets of limiting holes are symmetrically arranged.

[0008] In a further improvement, a rotating rod is fixed to the lower end of the lower limit seat, and the lower end of the rotating rod is rotatably connected to the lower end of the frame.

[0009] Compared with the prior art, the advantages of this utility model milling cutter fixing device are as follows:

[0010] The internal hole positioning and clamping method is adopted, with the protrusion of the lower limit seat matching the inner hole of the milling cutter, and the groove of the upper limit seat matching the protrusion; the turntable can be rotated and the rotation is limited by the limit rod to realize the adjustment of the milling cutter angle; the elastic guide rod elastically slides to connect the turntable and the upper limit seat to adapt to milling cutters of different thicknesses; it changes the drawback of traditional external clamping that requires multiple position adjustments, and realizes the outer circle grinding of the milling cutter in one go, which greatly improves the processing efficiency. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0012] Figure 2 This is a structural schematic diagram of the front view of this utility model.

[0013] Figure 3 This is a schematic diagram of the internal structure of the present invention.

[0014] Figure 4 This is a schematic diagram of the structure of the present invention in the removed state.

[0015] Figure 5 This is a schematic diagram of the upper limit seat in this utility model.

[0016] In the diagram, 1-frame, 11-through hole, 12-fixed frame, 2-lower limit seat, 21-rotating rod, 22-protrusion, 221-ring part, 222-limiting part, 3-upper limit seat, 31-groove, 4-turntable, 41-upper disc, 42-lower disc, 43-middle disc, 44-fixing bolt, 45-limiting insertion hole, 5-elastic guide rod, 51-sliding rod, 52-spring, 6-screw, 7-limiting rod. Detailed Implementation

[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; unless otherwise expressly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, they can refer to fixed connections or detachable connections, etc. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0018] The following is a description of the embodiments and appendices. Figures 1-5 The technical solution of this utility model will be further described below.

[0019] Example 1

[0020] A milling cutter fixing device includes: a frame 1, a lower limit seat 2, an upper limit seat 3, a turntable 4, an elastic guide rod 5, a screw 6, and a limiting rod 7. The lower limit seat 21 is rotatably connected to the lower end of the frame 1, and the limiting rod 7 is threadedly connected to the upper end of the frame 1. The turntable 4 is rotatably disposed at the upper end of the frame 1 and its rotation is restricted by the liftable limiting rod 7. The elastic guide rod 5 is elastically slidably disposed on both sides of the middle part of the turntable 4. The lower end of the elastic guide rod 5 is connected to the upper limit seat 3. The screw 6 is threadedly connected to the middle part of the turntable 4 and located at the upper end of the upper limit seat 3. The upper end of the lower limit seat 2 is provided with a protrusion 21, which is configured to cooperate with the inner hole of the milling cutter. The protrusion 21 includes an annular part 211 and a limiting part 212. The lower end of the upper limit seat 3 is provided with a groove 31 matching the protrusion 21.

[0021] like Figures 1-5 As shown, during use, the milling cutter is placed on the lower limit seat 2, so that the inner hole of the milling cutter mates with the protrusion 22 of the lower limit seat 2. The annular portion 221 and the limiting portion 222 of the protrusion 22 can position the milling cutter from the inner hole, preventing it from moving in the horizontal direction. Next, by rotating the screw 6, the screw 6 pushes the upper limit seat 3 downward. The upper limit seat 3 moves downward under the guidance of the elastic guide rod 5 until the groove 31 of the upper limit seat 3 tightly engages with the protrusion 22, clamping the milling cutter from the top and bottom. The turntable 4 is rotatably mounted on the frame 1. When it is necessary to adjust the angle of the milling cutter, the limiting rod 7 can be loosened first, allowing the turntable 4 to rotate freely. After adjusting the milling cutter to the appropriate angle, the limiting rod 7 is tightened so that its lower end is inserted into the limiting insertion hole 45 of the upper disc 41, restricting the rotation of the turntable 4, thereby fixing the angle of the milling cutter.

[0022] This fixing method positions and clamps the milling cutter from its inner hole, avoiding the problem of multiple position adjustments required by existing centers and chucks that clamp from the outside. It can complete the outer diameter grinding of the milling cutter in one go, greatly improving machining efficiency. At the same time, the cooperation between the turntable 4 and the limiting rod 7 facilitates the angle adjustment of the milling cutter to meet different machining needs and increases the versatility of the device.

[0023] In a further preferred embodiment, two sets of elastic guide rods 5 are symmetrically arranged. Each elastic guide rod 5 includes a sliding rod 51 and a spring 52. The body of the sliding rod 51 passes through the turntable 4 and its lower end is threadedly fixed to the upper limit seat 3. The spring 52 is sleeved on the rod body and located between the rod head of the sliding rod 51 and the turntable 4. When the rotating screw 6 pushes the upper limit seat 3 downward to clamp the milling cutter, if the thickness of the milling cutter is different, the spring 52 will compress or extend according to the pressure. The elastic effect of the spring 52 allows the upper limit seat 3 to adaptively adjust its position, always maintaining the clamping force on the milling cutter. The sliding rod 51 passes through the turntable 4, providing guidance for the up-and-down movement of the upper limit seat 3, ensuring the stability and accuracy of the movement of the upper limit seat 3.

[0024] As a further preferred embodiment, the turntable 4 includes an upper disc 41, a lower disc 42, and a middle disc 43. The upper end of the frame 1 has a through hole 11. The diameter of the middle disc 43 is equal to the diameter of the through hole 11. The diameters of the upper disc 41 and the lower disc 42 are larger than the diameter of the through hole 11. The middle disc 43 is located within the through hole 43. The upper disc 41, the middle disc 43, and the lower disc 42 are sequentially connected by fixing bolts 44, which are located inside the through hole 43. The upper disc 41 has a limiting insertion hole 45. The upper end of the frame 1 has a fixing frame 12. The limiting rod 7 is threaded onto the fixing frame 12, and its lower end is fitted into the limiting insertion hole 45. The turntable 4 adopts a combined structure of the upper disc 41, the lower disc 42, and the middle disc 43. The middle disc 43 cooperates with the through hole 11 of the frame 1, enabling the turntable 4 to rotate stably on the frame 1. The upper disc 41 and lower disc 42 are connected to the middle disc 43 by fixing bolts 44, fixing the turntable 4 as a whole. When it is necessary to adjust the angle of the milling cutter, loosen the limiting rod 7, and the turntable 4 can rotate freely around the middle disc 43 within the through hole 11. After adjusting to the appropriate angle, tighten the limiting rod 7 so that its lower end is inserted into the limiting insertion hole 45 of the upper disc 41. By using the cooperation between the limiting rod 7 and the limiting insertion hole 45, the rotation of the turntable 4 is restricted, thereby fixing the angle of the milling cutter.

[0025] As a further preferred embodiment, four sets of fixing bolts 44 are provided, and four sets of limiting holes 45 are symmetrically arranged. The four sets of fixing bolts 44 are evenly distributed, which can firmly connect the upper disk 41, the middle disk 43, and the lower disk 42 together, ensuring the stability of the overall structure of the turntable 4. The four sets of symmetrically arranged limiting holes 45 provide multiple fixing position options for the limiting rod 7. When adjusting the milling cutter angle, the limiting rod 7 can be inserted into different limiting holes 45 according to actual needs, so as to achieve precise fixing of the turntable 4 at multiple angles.

[0026] As a further preferred embodiment, a rotating rod 21 is fixed at the lower end of the lower limit seat 2, and the lower end of the rotating rod 21 is rotatably connected to the lower end of the frame 1.

[0027] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A milling insert fixation device, characterized in that, include: The machine comprises a frame, a lower limit seat, an upper limit seat, a turntable, an elastic guide rod, a screw, and a limiting rod. The lower limit seat is rotatably connected to the lower end of the frame, and the limiting rod is threadedly connected to the upper end of the frame. The turntable is rotatably mounted on the upper end of the frame and its rotation is restricted by the liftable limiting rod. The elastic guide rod is elastically slidably mounted on both sides of the middle of the turntable, and its lower end is connected to the upper limit seat. The screw is threadedly connected to the middle of the turntable and located at the upper end of the upper limit seat. The upper end of the lower limit seat has a protrusion that fits into the inner hole of a milling cutter. The protrusion includes an annular portion and a limiting portion. The lower end of the upper limit seat has a groove that matches the protrusion.

2. A cutter insert retaining device according to claim 1, wherein Two sets of elastic guide rods are symmetrically arranged. Each elastic guide rod includes a sliding rod and a spring. The body of the sliding rod passes through the turntable and its lower end is threadedly fixed to the upper limit seat. The spring is sleeved on the rod body and located between the rod head of the sliding rod and the turntable.

3. The cutter insert fixation device of claim 1, wherein The turntable includes an upper disc, a lower disc, and a middle disc. The upper end of the frame is provided with a through hole. The diameter of the middle disc is equal to the diameter of the through hole. The diameters of the upper disc and the lower disc are greater than the diameter of the through hole. The middle disc is located inside the through hole. The upper disc, the middle disc, and the lower disc are connected in sequence by fixing bolts. The fixing bolts are located inside the through hole. The upper disc is provided with a limiting insertion hole. The upper end of the frame is provided with a fixing frame. The limiting rod is threaded to the fixing frame and its lower end is matched and inserted into the limiting insertion hole.

4. A cutter insert retaining device according to claim 3, wherein The fixing bolts are provided in four sets, and the limiting holes are provided in four sets symmetrically.

5. The cutter insert retention device of claim 1 wherein, A rotating rod is fixed to the lower end of the lower limit seat, and the lower end of the rotating rod is rotatably connected to the lower end of the frame.

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