A milling cutter guard for gear box machining

Abstract

The utility model relates to a milling cutter protection device for gear box machining, including the handle of milling cutter, be equipped with the retainer ring of opposite handle rotation on the handle, still include the protection piece, be equipped with the elastic connection's limiting piece on the protection piece, the one end of limiting piece can buckle on the retainer ring, the other end corresponding protection piece on limiting piece is equipped with pressure sensor, when the milling cutter is close to the outside of gear box and processes, limiting piece is compressed to the limit position of preset and triggers pressure sensor, pressure sensor sends the instruction to the milling machine control center, avoids the outside of milling cutter touching gear box, simultaneously, the protection piece can install in the outside of gear box, prevents the cutting chip scratch the outside of gear box when milling pin, plays the protection effect to the gear box milling.

Description

Technical Field

[0001] This utility model relates to the field of gearbox machining technology, and in particular to a milling cutter protection device for gearbox machining. Background Technology

[0002] A gearbox has a boss on its outer surface. The end face of the boss has certain form and position tolerance requirements. To meet these requirements, it is generally machined using a milling cutter. A non-standard thread milling cutter is used for end face milling. A milling cutter is a rotary cutting tool used to perform face milling operations on a workpiece. In face milling, a flat surface is cut perpendicular to the longitudinal axis of the face milling cutter's body. The face milling cutter can have multiple cutting inserts, which are detachably mounted in corresponding insert holders within the cutter body. Each individual cutting insert can have several identical cutting edges, allowing each insert to rotate to different working positions. When the cutting edge of the insert is worn down, the insert can be repositioned in its insert holder and installed in a new working position, where another cutting edge is in the active cutting position. During end face machining, the milling chips generated can scratch the outer surface of the gearbox. Simultaneously, because the boss is close to the outer surface of the gearbox, excessive milling by the milling cutter can cut into the outer surface of the gearbox, causing damage to the outer surface. Utility Model Content

[0003] The purpose of this invention is to overcome the defects in the existing technology and provide a milling cutter protection device for gearbox machining.

[0004] To achieve the above objectives, the technical solution of this utility model is to design a milling cutter protection device for gearbox machining, including a milling cutter shank, a protective ring that rotates relative to the shank, and a protective component. The protective component is provided with a limiting member that is elastically connected. One end of the limiting member can be snapped onto the protective ring, and a pressure sensor is provided on the protective component corresponding to the other end of the limiting member.

[0005] In a further preferred embodiment, the protective component includes a vertically shaped protective plate that conforms to the shape of the gearbox. The protective plate is fitted with the outer side of the gearbox, and a connecting plate is provided on the protective plate near the end face of the gearbox. The connecting plate has a connecting hole.

[0006] A further preferred technical solution is that the protective plate has a stepped hole along the direction perpendicular to the protective plate, and a telescopic limiting member is provided in the stepped hole.

[0007] In a further preferred embodiment, the limiting member has an arc-shaped notch at one end near the tool holder, into which the protective ring can be inserted. The other end of the limiting member is a stepped shaft, which is slidably installed in the stepped hole. A spring is also fitted on one section of the stepped shaft, with one end of the spring abutting against a stepped end face of the stepped shaft and the other end of the spring abutting against the inner end face of the stepped hole. A pressure sensor is provided on the end of the stepped hole away from the tool holder.

[0008] In a further preferred embodiment, the limiting member consists of a bayonet portion and a stepped shaft portion, with the bayonet portion and the stepped shaft portion being connected by a ball joint at their adjacent ends.

[0009] In a further preferred embodiment, the bayonet portion includes a bayonet, the bayonet has a shaft extending away from the bayonet, the end of the shaft away from the bayonet has a ball head or ball seat, and the stepped shaft portion has a matching ball seat or ball head at the end near the shaft.

[0010] In a further preferred embodiment, a resin or rubber protective layer is provided on the outer periphery of the protective ring that contacts the limiting member.

[0011] In a further preferred embodiment, the locking slot of the limiting member has a width in the vertical direction.

[0012] The advantages and beneficial effects of this utility model are as follows: the tool holder drives the limiting member to move synchronously, causing the limiting member to elastically contract. When the milling cutter processes to near the outer side of the gearbox, the limiting member is compressed to a preset limit position and triggers the pressure sensor. The pressure sensor sends a command to the milling machine control center to prevent the milling cutter from touching the outer side of the gearbox. At the same time, the protective member can be installed on the outside of the gearbox to prevent cutting chips from scratching the outer side of the gearbox during milling, thus protecting the milling process of the gearbox. Attached Figure Description

[0013] Figure 1 This is the front view of the present utility model; Figure 2 This is a side view of the present invention; Figure 3 This utility model Figure 1 AA partial sectional view; In the diagram: 1. Tool holder; 2. Bayonet; 3. Limiting component; 4. Stepped shaft; 5. Protective component; 51. Guard plate; 52. Connecting plate; 6. Connecting hole; 7. Stepped hole; 8. Pressure sensor; 9. Spring; 10. Protective ring. Detailed Implementation

[0014] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0015] Reference Figure 1-3 As shown, a milling cutter protection device for gearbox machining includes a milling cutter shank 1, a retaining ring 10 that rotates relative to the shank 1, and a protective member 5. The protective member 5 can be disposed on the gearbox body. The protective member 5 is provided with a limiting member 3 that is elastically connected. One end of the limiting member 3 can be snapped onto the retaining ring 10, and the other end of the limiting member 3 is provided with a pressure sensor 8 on the protective member 5.

[0016] When machining the outer end face of the gearbox hole, the limiting member 3 can be locked onto the retaining ring 10. The retaining ring 10 can rotate relative to the tool holder 1, so that the retaining ring 10 is relatively stationary when in contact with the limiting member 3, preventing the retaining ring 10 from being damaged by friction with the limiting member 3. Since the gearbox hole is close to the outer side of the gearbox, when the milling cutter is machining, the direction of the milling cutter is away from the outer side and towards the outer side. The tool holder 1 moves towards the outer side. Therefore, the tool holder 1 will drive the limiting member 3 to move synchronously, causing the limiting member 3 to elastically contract. When the milling cutter is machining close to the outer side of the gearbox, the limiting member 3 is compressed to a preset limit position and triggers the pressure sensor 8. The pressure sensor 8 sends a command to the milling machine control center to prevent the milling cutter from touching the outer side of the gearbox. At the same time, the protective member 5 can be installed on the outside of the gearbox to prevent the cutting chips from scratching the outer side of the gearbox during milling, thus protecting the milling of the gearbox.

[0017] In one embodiment, the retaining ring 10 is a rolling bearing, which is mounted on the tool holder 1. The outer ring of the rolling bearing protrudes from the outer circumferential surface of the tool holder 1. The protective member 5 includes a vertically shaped protective plate 51 that conforms to the shape of the gearbox. The protective plate 51 is fitted to the outer side of the gearbox. A connecting plate 52, perpendicular to the protective plate 51, is provided near the end face of the gearbox. The connecting plate 52 has a connecting hole 6. The connecting plate 52 is fitted to the end face of the gearbox. The protective member 5 can be stably placed on the gearbox body by means of pins or bolts. A stepped hole 7 is provided on the protective plate 51 along the direction perpendicular to the protective plate. A telescopic limiting member 3 is provided in the stepped hole 7. The limiting member 3 has an arc-shaped latch 2 at one end near the tool holder 1. The retaining ring can be inserted into the slot 2. The other end of the limiting member is a stepped shaft 4, which is slidably installed in the stepped hole 7. A spring 9 is also fitted on one section of the stepped shaft 4. One end of the spring 9 abuts against a stepped end face of the stepped shaft 4, and the other end of the spring 9 abuts against the inner end face of the stepped hole 7. A pressure sensor 8 is provided on the end of the stepped hole 7 away from the tool holder 1. The slot 2 of the limiting member 3 can be engaged with the outer periphery of the retaining ring 10. In this way, during milling, the tool holder 1 drives the limiting member 3 to compress the spring 9 in the stepped hole 7. When the limiting member 3 moves to a predetermined limit position, the limiting member 3 triggers the pressure sensor 8 to work. The pressure sensor 8 sends a command to the milling machine control center to prevent the milling cutter from touching the outer side of the gearbox.

[0018] In one embodiment, a resin or rubber protective layer is provided on the outer periphery of the protective ring 10 that contacts the limiting member 3. The resin or rubber protective layer can be interference-fitted with the protective ring. The resin or rubber protective layer is relatively soft and can prevent friction and absorb vibration.

[0019] In one embodiment, since the handle 1 moves vertically while moving horizontally, the latch 2 of the limiting member 3 has a width in the vertical direction so that when the guard ring 10 moves vertically, the guard ring 10 and the latch 2 can always be engaged together and can slide vertically within the latch 2.

[0020] Furthermore, to better coordinate the movement of the tool holder 1 with the limiting member 3, the limiting member 3 comprises a bayonet portion and a stepped shaft portion. The bayonet portion and the stepped shaft portion are hinged together at their proximal ends via a ball joint. Specifically, the bayonet portion includes a bayonet 2, which has a shaft extending away from the bayonet. The end of the shaft away from the bayonet has a ball joint or ball seat. The end of the stepped shaft portion near the shaft has a matching ball seat or ball joint. The bayonet portion and the stepped shaft portion are hinged together via a ball joint. The limiting component has a high degree of freedom and can be well matched with the movement trajectory of the tool holder in the X, Y, and Z axes. When the milling cutter processes the material near the outer side of the gearbox, the limiting component is compressed to a preset limit position and triggers the pressure sensor. The pressure sensor sends a command to the milling machine control center to prevent the milling cutter from touching the outer side of the gearbox. At the same time, the protective component can be installed on the outside of the gearbox to prevent cutting chips from scratching the outer side of the gearbox during milling, thus protecting the gearbox during milling.

[0021] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A milling cutter protection device for gearbox machining, characterized in that, The device includes a milling cutter holder, a retaining ring that rotates relative to the cutter holder, and a protective component. The protective component has a limiting member that is elastically connected. One end of the limiting member can be snapped onto the retaining ring, and a pressure sensor is provided on the protective component corresponding to the other end of the limiting member.

2. The milling cutter protection device for gearbox machining according to claim 1, characterized in that, The protective component includes a vertically shaped protective plate that conforms to the shape of the gearbox. The protective plate is fitted with the outer side of the gearbox. A connecting plate is provided on the protective plate near the end face of the gearbox and is perpendicular to the protective plate. The connecting plate is provided with a connecting hole.

3. A milling cutter protection device for gearbox machining according to claim 2, characterized in that, The protective plate has stepped holes along the direction perpendicular to the protective plate, and a telescopic limiting member is installed in the stepped holes.

4. A milling cutter protection device for gearbox machining according to claim 3, characterized in that, The limiting member has an arc-shaped notch at one end near the tool holder, and the retaining ring can be inserted into the notch. The other end of the limiting member is a stepped shaft, which is slidably installed in the stepped hole. A spring is also fitted on one section of the stepped shaft. One end of the spring abuts against a stepped end face of the stepped shaft, and the other end of the spring abuts against the inner end face of the stepped hole. A pressure sensor is provided on the end of the stepped hole away from the tool holder.

5. A milling cutter protection device for gearbox machining according to claim 4, characterized in that, The limiting member consists of a bayonet portion and a stepped shaft portion, with the bayonet portion and the stepped shaft portion being connected by a ball joint at their adjacent ends.

6. A milling cutter protection device for gearbox machining according to claim 5, characterized in that, The bayonet portion includes a bayonet, the bayonet has a shaft extending away from the bayonet, the end of the shaft away from the bayonet has a ball head or ball seat, and the stepped shaft portion has a matching ball seat or ball head at the end near the shaft.

7. A milling cutter protection device for gearbox machining according to any one of claims 1-6, characterized in that, A resin or rubber protective layer is provided on the outer periphery of the protective ring that contacts the limiting member.

8. A milling cutter protection device for gearbox machining according to claim 4, characterized in that, The locking slot of the limiting member has a width in the vertical direction.

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