A tool holder for gear machining

Abstract

The utility model discloses a tool rest for gear machining, include: main body mechanism and joint mechanism, main body mechanism includes base, the fixed seat of one side fixed in base, a plurality of guide rod fixed in one side of base, the movable seat of end slidingly covering on guide rod, the electric telescopic handle of installing in fixed seat inner chamber and end with movable seat fixed connection, the first rotating shaft of rotation installation in fixed seat end, the second rotating shaft of rotation installation in movable seat end, the hobbing cutter of sleeve joint on first rotating shaft and the drive part of installing in one side of base, the base is used for installing other components, and it is fixed on processing equipment through bolt, the fixed seat is used for installing the first rotating shaft, keeps the stability of first rotating shaft, the guide rod is used for installing movable seat, and the movement of movable seat is located, guarantees the stability when movable seat moves, this tool rest for gear machining has the advantages such as convenient hobbing cutter installation and dismantling and strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of gear processing equipment technology, specifically to a tool holder for gear processing. Background Technology

[0002] A gear hob is a cutting tool used to machine spur and helical cylindrical gears based on the meshing principle of helical gears. It is used to machine gears and is usually fixed on the machining equipment by a tool holder.

[0003] The existing hobbing cutter holders have the following drawbacks during use: the hobbing cutter is relatively difficult to install and disassemble; at the same time, the hobbing cutter temperature gradually rises during hobbing, and the lack of an effective cooling structure affects the machining accuracy. Therefore, there is room for improvement. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows: a tool holder for gear processing, comprising: a main body mechanism and a joint mechanism, wherein the main body mechanism includes a base, a fixed seat fixed to one side of the base, a plurality of guide rods fixed to one side of the base, a movable seat with its end slidably sleeved on the guide rod, an electric telescopic rod installed in the inner cavity of the fixed seat and fixedly connected to the movable seat at its end, a first rotating shaft rotatably installed at the end of the fixed seat, a second rotating shaft rotatably installed at the end of the movable seat, a gear hobbing cutter sleeved on the first rotating shaft, and a driving component installed on one side of the base.

[0006] The first rotating shaft has a first groove at one end and a first flow channel in a ring array at the other end that communicates with the first groove. The second rotating shaft has a second groove at one end and a second flow channel in a ring array at the other end that communicates with the second groove.

[0007] The joint mechanism includes two T-shaped joints respectively disposed at the ends of the first rotating shaft and the second rotating shaft, and a fixing ring sleeved on the outside of the T-shaped joints and threadedly connected to the ends of the first rotating shaft and the second rotating shaft.

[0008] In a preferred embodiment, the present invention can be further configured such that the driving component includes a gear ring fixedly sleeved on a first rotating shaft, a motor mounted on one side of the base, and a gear fixed on the motor shaft, wherein the gear meshes with the gear ring.

[0009] In a preferred embodiment, the present invention can be further configured such that: a spline groove is formed at the end of the first rotating shaft, and a spline shaft is fixed at the end of the second rotating shaft, wherein the spline shaft is fitted into the spline groove.

[0010] In a preferred embodiment, the present invention can be further configured such that: the end of the second rotating shaft is fixed with a convex tube in a ring array, the convex tube is connected to the second flow channel, and the convex tube is interlocked with the first flow channel.

[0011] In a preferred embodiment, the present invention can be further configured such that: a slot is formed on the outer side of the first rotating shaft, and a protrusion is fixed on the inner wall of the hobbing cutter, the protrusion being fitted into the slot.

[0012] In a preferred embodiment, the present invention can be further configured such that the T-joint has seals on both sides.

[0013] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0014] 1. In this utility model, a base is provided, and a fixed seat is installed on one side of the base. At the same time, multiple guide rods are fixed on one side of the base. A movable seat is slidably sleeved on the guide rods. It is driven by an electric telescopic rod installed in the inner cavity of the base and fixedly connected to the movable seat at its end. A first rotating shaft is rotatably installed on the fixed seat, and a second rotating shaft is rotatably installed on the movable seat. When it is necessary to replace the hobbing cutter, the electric telescopic rod is activated to drive the movable seat to move. The movement of the movable seat drives the second rotating shaft to move, so that the second rotating shaft is disengaged from the first rotating shaft. At this time, the hobbing cutter can be taken out from the first rotating shaft. During installation, the hobbing cutter is simply sleeved on the first rotating shaft. Then, the electric telescopic rod drives the movable seat to move. The movement of the movable seat drives the second rotating shaft to fit tightly against the first rotating shaft, thus completing the installation of the hobbing cutter. This tool holder greatly increases the convenience of hobbing cutter installation and disassembly, and improves the efficiency of hobbing cutter replacement.

[0015] 2. In this invention, a first flow channel is formed in a ring array inside the first rotating shaft, and a first groove is formed at the end of the first rotating shaft. Simultaneously, a second groove is formed in a ring array inside the second rotating shaft, and a second groove is formed at the end of the second rotating shaft. Both the first and second rotating shafts are rotatably mounted with T-shaped connectors via fixed rings. With this configuration, when the hobbing cutter is working, cooling water is injected into the second groove through one side of the T-shaped connector. The cooling water then enters the second and first flow channels, flowing within the second and first rotating shafts, carrying away the heat transferred from the hobbing cutter to the second and first rotating shafts, thus cooling the hobbing cutter. Finally, the cooling water enters the first groove and is discharged through the other side of the T-shaped connector, effectively cooling the hobbing cutter and preventing excessively high hobbing cutter temperatures from affecting machining accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is an exploded structural diagram of the present invention.

[0019] Figure label:

[0020] 100. Main body; 110. Base; 120. Fixed seat; 130. Guide rod; 140. Movable seat; 150. Electric telescopic rod; 160. First rotating shaft; 161. First flow channel; 162. First groove; 163. Spline groove; 170. Second rotating shaft; 171. Second flow channel; 172. Second groove; 173. Protruding tube; 174. Splined shaft; 180. Gear hobbing cutter; 190. Driving component; 191. Gear ring; 192. Motor; 193. Gear;

[0021] 200. Connector mechanism; 210. T-joint; 211. Sealing ring; 220. Retaining ring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0023] Some embodiments of this utility model are described below with reference to the accompanying drawings. Example

[0024] Combination Figure 1-3 As shown, this embodiment provides a tool holder for gear machining, including: a main body mechanism 100 and a joint mechanism 200.

[0025] The main body 100 includes a base 110, a fixed seat 120 fixed to one side of the base 110, a plurality of guide rods 130 fixed to one side of the base 110, a movable seat 140 with its end slidably sleeved on the guide rod 130, an electric telescopic rod 150 installed in the inner cavity of the fixed seat 120 and fixedly connected to the movable seat 140 at its end, a first rotating shaft 160 rotatably installed at the end of the fixed seat 120, a second rotating shaft 170 rotatably installed at the end of the movable seat 140, a gear hobbing cutter 180 sleeved on the first rotating shaft 160, and a drive member 190 installed on one side of the base 110.

[0026] The base 110 is used to install other components and is fixed to the processing equipment by bolts. The fixed base 120 is used to install the first rotating shaft 160 and maintain the stability of the first rotating shaft 160. The guide rod 130 is used to install the movable base 140 and limit the movement of the movable base 140 to ensure the stability of the movable base 140 when moving. The end of the movable base 140 has a round hole through which the guide rod 130 passes. The movable base 140 is used to install the second rotating shaft 170. In addition, bearings are fixed at the ends of both the fixed base 120 and the movable base 140 to install the first rotating shaft 160 and the second rotating shaft 170 and ensure their stability when rotating.

[0027] The electric telescopic rod 150 is fixed in the inner cavity of the base 110, and its end extends out of the base 110 and is fixedly connected to the end of the movable seat 140. With this setting, when the electric telescopic rod 150 extends or retracts, it can drive the movable seat 140 to move, thereby driving the second rotating shaft 170 to move, controlling the position of the second rotating shaft 170, and thus facilitating the installation and disassembly of the gear hobbing cutter 180.

[0028] The gear hobbing cutter 180 is used to process the gear 193. A slot is opened on the outer side of the first rotating shaft 160, and a protrusion is fixed on the inner wall of the gear hobbing cutter 180. The protrusion is fitted into the slot, which ensures the stability of the gear hobbing cutter 180 and enables the gear hobbing cutter 180 to rotate synchronously when the first rotating shaft 160 rotates.

[0029] In addition, a spline groove 163 is provided at the end of the first rotating shaft 160, and a spline shaft 174 is fixed at the end of the second rotating shaft 170. The spline shaft 174 is fitted into the spline groove 163, so that when the first rotating shaft 160 rotates, it can synchronously drive the second rotating shaft 170 to rotate, thus ensuring the synchronicity of the rotation of the first rotating shaft 160 and the second rotating shaft 170.

[0030] The driving component 190 is used to drive the first rotating shaft 160 to rotate. It includes a gear ring 191 fixedly sleeved on the first rotating shaft 160, a motor 192 mounted on one side of the base 110, and a gear 193 fixed on the shaft of the motor 192. The gear 193 meshes with the gear ring 191. When the motor 192 starts, it drives the gear 193 to rotate. The rotation of the gear 193 drives the gear ring 191 to rotate, which in turn drives the first rotating shaft 160 to rotate. The rotation of the first rotating shaft 160 drives the hobbing cutter 180 to rotate, and performs machining on the gear 193.

[0031] A first groove 162 is formed at one end of the first rotating shaft 160. At the other end of the first rotating shaft 160, a first flow channel 161 is formed in a ring array and communicates with the first groove 162. Simultaneously, a second groove 172 is formed at one end of the second rotating shaft 170. At the other end of the second rotating shaft 170, a second flow channel 171 is formed in a ring array and communicates with the second groove 172. A protruding tube 173 is fixed in a ring array at one end of the second rotating shaft 170, and the protruding tube 173 communicates with the second flow channel 171. Furthermore, the protruding tube 173 is interlocked with the first flow channel 161. Through this arrangement, cooling water can enter the second flow channel 171 from the second groove 172, and then enter the first flow channel 161 through the protruding tube 173. The cooling water flows in the second flow channel 171 and the first flow channel 161, which can carry away the heat transferred from the hobbing cutter 180 to the first rotating shaft 160 and the second rotating shaft 170, thereby cooling the hobbing cutter 180 and preventing the hobbing cutter 180 from overheating.

[0032] The connector mechanism 200 includes two T-shaped connectors 210 respectively disposed at the ends of the first rotating shaft 160 and the second rotating shaft 170, and a fixing ring 220 sleeved on the outside of the T-shaped connectors 210 and threadedly connected to the ends of the first rotating shaft 160 and the second rotating shaft 170. The fixing ring 220 is used to fix the T-shaped structure to the ends of the first rotating shaft 160 and the second rotating shaft 170. Both sides of the T-shaped connectors 210 are provided with sealing rings 211 to ensure the sealing between the T-shaped connectors 210 and the ends of the first rotating shaft 160 and the second rotating shaft 170, as well as between the T-shaped connectors 210 and the fixing ring 220, and to facilitate the rotation of the T-shaped connectors 210, avoiding the influence of the rotation of the first rotating shaft 160 and the second rotating shaft 170 on the T-shaped connectors 210. One side of the T-shaped connectors 210 is used to send cooling water into the second groove 172, and the other side of the T-shaped connectors 210 is used to discharge the cooling water that has absorbed heat in the first groove 162.

[0033] The working principle and usage of this utility model are as follows: When the gear hobbing cutter 180 needs to be replaced, the electric telescopic rod 150 is activated, driving the movable seat 140 to move away from the fixed seat 120. The movement of the movable seat 140 drives the second rotating shaft 170 to move, causing the end of the second rotating shaft 170 to disengage from the end of the first rotating shaft 160. At this time, the gear hobbing cutter 180 is removed from the first rotating shaft 160, and the new gear hobbing cutter 180 is fitted onto the first rotating shaft 160. The electric telescopic rod 150 retracts, and through its movement, it drives the second rotating shaft 170 closer to the first rotating shaft 160, causing the splined shaft 174 at the end of the second rotating shaft 170 to engage with the first rotating shaft 160. The hobbing cutter 180 can be installed in the spline groove 163 at the end of 60. When the hobbing cutter 180 is working, the heat on the hobbing cutter 180 is transferred to the second rotating shaft 170 and the first rotating shaft 160. Cooling water is injected into the second groove 172 through the T-joint 210 on one side. Then the cooling water enters the second flow channel 171 and the first flow channel 161, flows in the second rotating shaft 170 and the first rotating shaft 160, and carries away the heat transferred from the hobbing cutter 180 to the second rotating shaft 170 and the first rotating shaft 160, so as to dissipate heat and cool the hobbing cutter 180. Finally, the cooling water enters the first groove 162 and is sent out through the T-joint 210 on the other side.

[0034] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A tool holder for gear machining, comprising: The main body (100) and the connector mechanism (200) are characterized in that the main body (100) includes a base (110), a fixed seat (120) fixed to one side of the base (110), a plurality of guide rods (130) fixed to one side of the base (110), a movable seat (140) with its end slidably sleeved on the guide rod (130), an electric telescopic rod (150) installed in the cavity of the fixed seat (120) and whose end is fixedly connected to the movable seat (140), a first rotating shaft (160) rotatably installed at the end of the fixed seat (120), a second rotating shaft (170) rotatably installed at the end of the movable seat (140), a gear hobbing cutter (180) sleeved on the first rotating shaft (160), and a driving member (190) installed on one side of the base (110). The first rotating shaft (160) has a first groove (162) at one end, and a first flow channel (161) is formed in a ring array at the other end of the first rotating shaft (160) to communicate with the first groove (162). The second rotating shaft (170) has a second groove (172) at one end, and a second flow channel (171) is formed in a ring array at the other end of the second rotating shaft (170) to communicate with the second groove (172). The joint mechanism (200) includes two T-shaped joints (210) respectively disposed at the ends of the first rotating shaft (160) and the second rotating shaft (170), and a fixing ring (220) sleeved on the outside of the T-shaped joints (210) and threadedly connected to the ends of the first rotating shaft (160) and the second rotating shaft (170).

2. The tool holder for gear machining according to claim 1, characterized in that, The drive unit (190) includes a gear ring (191) fixedly sleeved on the first rotating shaft (160), a motor (192) mounted on one side of the base (110), and a gear (193) fixed on the shaft of the motor (192), the gear (193) meshing with the gear ring (191).

3. The tool holder for gear machining according to claim 1, characterized in that, The first rotating shaft (160) has a spline groove (163) at its end, and a spline shaft (174) is fixed at the end of the second rotating shaft (170), the spline shaft (174) being fitted into the spline groove (163).

4. A tool holder for gear machining according to claim 1, characterized in that, The end of the second rotating shaft (170) is fixed with a protruding tube (173) in a ring array. The protruding tube (173) is connected to the second flow channel (171), and the protruding tube (173) is interlocked with the first flow channel (161).

5. A tool holder for gear machining according to claim 1, characterized in that, A slot is formed on the outer side of the first rotating shaft (160), and a protrusion is fixed on the inner wall of the hobbing cutter (180), with the protrusion fitting into the slot.

6. A tool holder for gear machining according to claim 1, characterized in that, The T-joint (210) is provided with sealing rings (211) on both sides.

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