Extended main shaft of horizontal boring machine

Abstract

The utility model relates to the field of horizontal boring machines, and discloses an extended main shaft of a horizontal boring machine, which comprises a cylindrical supporting seat, one end of the supporting seat is connected with the horizontal boring machine, the other end of the supporting seat is connected with a planet wheel mechanism, and the planet wheel mechanism is connected with a plurality of annularly and uniformly distributed cutters; a transmission shaft is coaxially arranged in the supporting seat, one end of the transmission shaft is connected with a power system of the horizontal boring machine, and the other end of the transmission shaft is connected with a cutter handle which is coaxially and fixedly connected with a sun gear of the planet gear mechanism. According to the utility model, large inner holes beyond the machining range can be machined on the conventional horizontal boring machine, and the problem that the conventional horizontal boring machine is difficult to machine workpieces beyond the machining range is solved.

Description

Technical Field

[0001] This utility model relates to the field of horizontal boring machines, and specifically to an extended spindle for a horizontal boring machine. Background Technology

[0002] Horizontal boring machines are machine tools used for high-precision hole machining, widely used in machinery manufacturing, automotive industry, aerospace and other fields. Existing horizontal boring machines have fixed spindle lengths and machining ranges after design and manufacture. However, in actual production, there are often situations where it is necessary to machine large workpieces or workpieces with complex shapes. The size or structure of these workpieces means that the holes to be machined exceed the machining range of the purchased horizontal boring machine, such as large internal holes on some large workpieces. Purchasing a new horizontal boring machine with a larger machining range would incur extremely high costs. Therefore, how to machine workpieces exceeding the machining range of existing horizontal boring machines is a problem that urgently needs to be solved. Utility Model Content

[0003] The present invention aims to provide an extended spindle for a horizontal boring machine, so as to enable the machining of large internal holes beyond the machining range of existing horizontal boring machines, thereby solving the problem that existing horizontal boring machines are difficult to machine workpieces beyond their machining range.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a horizontal boring machine extension spindle, comprising a cylindrical support base, one end of which is connected to the horizontal boring machine and the other end of which is connected to a planetary gear mechanism, wherein multiple tools evenly distributed in a ring are connected to the planetary gear mechanism; a transmission shaft is coaxially provided inside the support base, one end of which is connected to the power system of the horizontal boring machine and the other end of which is connected to a tool holder, the tool holder being coaxially and fixedly connected to the sun gear of the planetary gear mechanism.

[0005] Preferably, as an improvement, the end of the support seat serves as the planet carrier of the planetary gear mechanism to support the planetary gears, the internal gear ring of the planetary gear mechanism is connected to the bearing of the support seat, and the cutting tools are evenly distributed in a ring on the internal gear ring.

[0006] Preferably, as an improvement, the end of the support base is provided with an annular support plate surrounding the outside of the tool holder. The annular support plate has multiple shaft holes evenly distributed circumferentially. The planetary gear shaft of the planetary gear is fitted with the shaft hole with clearance. The other end of the planetary gear shaft is supported by an annular support frame. The annular support frame is coaxially arranged with the support base and connected by fasteners.

[0007] Preferably, as an improvement, the internal gear ring of the planetary gear mechanism is connected to the annular support frame via a bearing, and a bearing end cap located on the outside of the annular support frame is connected to the middle of the internal gear ring.

[0008] Preferably, as an improvement, the internal gear ring of the planetary gear mechanism is fixedly connected to the support seat, the planet carrier of the planetary gear mechanism is connected to the support seat bearing, and a cutter head is fixedly connected to the planet carrier of the planetary gear mechanism, with the cutters evenly distributed in a ring on the cutter head.

[0009] Preferably, as an improvement, the end of the support base is provided with a support platform surrounding the outside of the tool holder, and the bearing between the planetary carrier and the support base is positioned and supported by the support platform.

[0010] Preferably, as an improvement, the side end of the internal gear ring away from the support is connected to a pressure cap, a bearing support is provided between the pressure cap and the planetary carrier, and a bearing pressure cap for clamping and positioning the bearing is connected to the pressure cap.

[0011] Preferably, as an improvement, the end of the support away from the planetary gear mechanism is integrally formed with a mounting base, which is connected to the horizontal boring machine.

[0012] This invention relates to an extended spindle for a horizontal boring machine. A cylindrical support base is connected to the end of the spindle, with a drive shaft coaxially mounted within the support base. A planetary gear mechanism is located at the end of the support base. The drive shaft, coaxially mounted within the support base, has one end connected to the horizontal boring machine's power system to receive rotational power, and the other end connected to the sun gear of the planetary gear mechanism via a tool holder. This transmits rotational power to the sun gear. Under the action of the planetary gear mechanism, the rotation of the sun gear drives the planetary gears to revolve around it, while the planetary gears themselves also rotate. This, in turn, drives the evenly distributed circular cutting tools to revolve. Thus, while maintaining the original structure of the horizontal boring machine, the machining range is expanded by extending the spindle, enabling the machining of large internal holes beyond the original machining range of the horizontal boring machine.

[0013] This utility model provides two implementation methods:

[0014] In the first method, the end of the support base serves as a planetary carrier to support the planetary gears. The internal gear ring is fitted with the cutting tool and connected to the support base via bearings. The drive shaft drives the tool holder and sun gear to rotate, and the sun gear drives the planetary gears to rotate in their original positions. Simultaneously, the internal gear ring and the cutting tool rotate under the drive of the planetary gears to perform machining.

[0015] Method 2: The internal gear ring is fixedly connected to the support base, and the planetary carrier is connected to the support base via bearings. The cutting tool is mounted on the cutter head on the planetary carrier. The drive shaft drives the sun gear to rotate, while the internal gear ring remains stationary. The sun gear drives the planet gears and the planetary carrier to rotate around the axis of the support base, and the cutting tool performs machining as the planetary carrier rotates.

[0016] Technical effects:

[0017] 1. By setting up a detachable extended spindle structure, the machining range is expanded without changing the original horizontal boring machine structure. This solves the problem that existing horizontal boring machines are unable to machine holes beyond their machining range, meets the machining needs of large internal holes in large workpieces, and avoids the high costs of replacing or purchasing new equipment.

[0018] 2. The planetary gear mechanism drives the cutting tool for rotary cutting, allowing multiple tools to work simultaneously, resulting in high processing efficiency. The planetary gear mechanism also has a built-in speed reduction function, with a high transmission ratio and high load-bearing capacity. Even when machining large internal holes of large workpieces, it can ensure smooth and reliable transmission, guaranteeing machining accuracy and quality.

[0019] 3. Two options are provided: internal gear ring mounting tool and planetary carrier mounting tool, which can be flexibly selected according to machining needs.

[0020] 4. The extended spindle and the horizontal boring machine are connected in a detachable manner, which facilitates disassembly and maintenance, while not affecting the original machining functions of the horizontal boring machine.

[0021] 5. By fully integrating the shaft system structure with the planetary gear mechanism and the cutter head structure, the structure is highly compact, the transmission is stable and reliable, and manufacturing and assembly are relatively convenient, enabling the expansion of the machining range of horizontal boring machines at a lower cost. Attached Figure Description

[0022] Figure 1 This is a longitudinal sectional side view of Embodiment 1 of this utility model.

[0023] Figure 2 This is a front view of Embodiment 1 of this utility model.

[0024] Figure 3 This is a longitudinal sectional side view of Embodiment 2 of this utility model.

[0025] Figure 4 This is a front view of Embodiment 2 of the present invention. Detailed Implementation

[0026] The following detailed description illustrates the specific implementation method:

[0027] The reference numerals in the accompanying drawings include: mounting base 1, support base 2, drive shaft 3, tool holder 4, annular support plate 5, retaining ring 6, planetary gear 7, planetary gear shaft 8, internal gear ring 9, cutting tool 10, sun gear 11, bearing end cover 12, bearing 13, support platform 14, planetary carrier 15, pressure cover 16, bearing pressure cover 17, tool disc 18, and annular support frame 19.

[0028] Example 1, basically as shown in the attached document. Figure 1 , Figure 2As shown: A horizontal boring machine extension spindle includes a cylindrical support base 2. One end of the support base 2 is integrally formed with a mounting base 1, which is bolted to the horizontal boring machine. The other end of the support base 2 is connected to a planetary gear 7 mechanism. An annular support plate 5, surrounding the outside of a tool holder 4, is integrally formed at the end of the support base 2. Multiple shaft holes are evenly distributed circumferentially on the annular support plate 5. The planetary gear shafts 8 of the planetary gear 7 mechanism are fitted into these shaft holes with clearance. The other end of the planetary gear shafts 8 is supported by an annular support frame 19. The annular support frame 19 has shaft holes corresponding to those on the annular support plate 5 for mounting the planetary gear shafts 8. The annular support frame 19 is coaxially arranged with the support base 2 and connected by bolts. The internal gear ring 9 of the planetary gear 7 mechanism is fitted onto the end of the support seat 2. The internal gear ring 9 is connected to the support seat 2 and the annular support frame 19 via a bearing 13, allowing the internal gear ring 9 to rotate relative to the support seat 2 and the annular support frame 19. Steps are provided on the internal gear ring 9, the support seat 2, and the annular support frame 19 to position the bearing 13. The end of the support seat 2 is machined with external threads for connecting a retaining ring 6 to limit the movement of the bearing 13. A bearing end cap 12 located outside the annular support frame 19 is bolted to the middle of the internal gear ring 9. Four cutters 10 are evenly distributed in a ring along the circumference of the internal gear ring 9, and the cutters 10 are bolted to the internal gear ring 9. A drive shaft 3 is coaxially mounted inside the support base 2. One end of the drive shaft 3 is connected to the power system of the horizontal boring machine through a gear set or coupling, and the other end is connected to a tool holder 4. The tool holder 4 is a self-locking tapered tool holder 4. The tool holder 4 is coaxially connected to the sun gear 11 of the planetary gear 7 mechanism. The tool holder 4 and the sun gear 11 are connected by welding or bolts.

[0029] The specific implementation process is as follows: The support seat 2 and the transmission shaft 3 are connected to the horizontal boring machine. The transmission shaft 3 is connected to the spindle of the horizontal boring machine to transmit power to the planetary gear 7 mechanism. In the planetary gear 7 mechanism, the sun gear 11 drives the planetary gear 7. The end of the support seat 2 serves as part of the planet carrier 15 of the planetary gear 7 mechanism and supports the planetary gear 7 together with the ring support frame 19. The planetary gear 7 rotates in place under the constraint of the support seat 2 and the ring support frame 19. The internal gear ring 9 is supported by the bearing 13 on the support seat 2 and the ring support frame 19. Driven by the planetary gear 7, the internal gear ring 9 rotates. The cutting tool 10 on the internal gear ring 9 processes the workpiece. The radial dimension of the internal gear ring 9 is larger than that of the conventional cutting tool 10. With the cooperation of multiple evenly distributed cutting tools 10, the large inner hole of the large workpiece can be processed stably and effectively under the transmission of the planetary gear 7 mechanism.

[0030] Example 2, as Figure 3 , Figure 4As shown, the difference between this embodiment and Embodiment 1 is that the internal gear ring 9 of the planetary gear 7 mechanism is bolted to the support base 2, and a pressure cap 16 is bolted to the side of the internal gear ring 9 away from the support base 2. The support base 2 has a support platform 14 surrounding the outside of the tool holder 4. One side of the planetary carrier 15 of the planetary gear 7 mechanism is positioned and supported by a bearing 13 to the support platform 14, and the other side is positioned and supported by a bearing 13 to the pressure cap 16. Steps are provided on the planetary carrier 15 and the support platform 14 to position the bearing 13. A bearing pressure cap 17 is bolted to the pressure cap 16 to press and position the bearing 13. The bearing pressure cap 17 is annular. The planetary carrier 15 extends to the outside of the bearing pressure cap 17 and is bolted to a tool disc 18. Four tools 10 are evenly distributed in a ring on the tool disc 18, and the tools 10 are bolted to the tool disc 18.

[0031] In this embodiment, power is input from the drive shaft 3 and the sun gear 11. The internal gear ring 9 of the planetary gear 7 mechanism is fixedly connected to the support seat 2 and cannot rotate. The planetary carrier 15 is rotatable under the support of the bearing 13. The sun gear 11 drives the planetary gear 7 to rotate on its own axis. The planetary gear 7 revolves under the action of the internal gear ring 9, and the revolution simultaneously drives the planetary carrier 15 to rotate. The planetary carrier 15 drives the cutter head 18 to rotate, and then the cutter 10 on the cutter head 18 processes the inner hole of the workpiece. The planetary gear 7 mechanism provides a large transmission ratio and load-bearing capacity, while the cutter head 18 can be selected according to the size of different workpieces, and even the number of cutters 10 can be adjusted as needed. This allows for processing beyond the original horizontal boring machine, and stable and reliable processing of large inner holes in large workpieces.

[0032] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A horizontal boring machine extended spindle, characterized in that: It includes a cylindrical support base, one end of which is connected to a horizontal boring machine and the other end is connected to a planetary gear mechanism. Multiple tools are evenly distributed in a ring on the planetary gear mechanism. A drive shaft is coaxially arranged inside the support base. One end of the drive shaft is connected to the power system of the horizontal boring machine and the other end is connected to a tool holder. The tool holder is coaxially and fixedly connected to the sun gear of the planetary gear mechanism.

2. The horizontal boring machine extended spindle according to claim 1, characterized in that: The end of the support base serves as the planet carrier of the planetary gear mechanism to support the planetary gears. The internal gear ring of the planetary gear mechanism is connected to the bearing of the support base, and the cutting tools are evenly distributed in a ring on the internal gear ring.

3. The horizontal boring machine extended spindle according to claim 2, characterized in that: The end of the support base is provided with an annular support plate surrounding the outside of the tool holder. Multiple shaft holes are evenly distributed around the annular support plate in the circumferential direction. The planetary gear shaft of the planetary gear is fitted with the shaft hole with clearance. The other end of the planetary gear shaft is supported by an annular support frame. The annular support frame is coaxially arranged with the support base and connected by fasteners.

4. The horizontal boring machine extended spindle according to claim 3, characterized in that: The internal gear ring of the planetary gear mechanism is connected to the annular support frame via a bearing, and a bearing end cap located on the outside of the annular support frame is connected to the middle of the internal gear ring.

5. The horizontal boring machine extended spindle according to claim 1, characterized in that: The internal gear ring of the planetary gear mechanism is fixedly connected to the support base, the planet carrier of the planetary gear mechanism is connected to the support base bearing, and a cutter head is fixedly connected to the planet carrier of the planetary gear mechanism. The cutters are evenly distributed in a ring on the cutter head.

6. The horizontal boring machine extended spindle according to claim 5, characterized in that: The end of the support base is provided with a support platform that surrounds the outside of the tool holder, and the bearing between the planetary carrier and the support base is positioned and supported by the support platform.

7. The horizontal boring machine extended spindle according to claim 6, characterized in that: The internal gear ring is connected to a pressure cap on the side away from the support seat. A bearing support is provided between the pressure cap and the planetary carrier. A bearing pressure cap for clamping and positioning the bearing is connected to the pressure cap.

8. A horizontal boring machine extended spindle according to claim 4 or 7, characterized in that: The end of the support seat away from the planetary gear mechanism is integrally formed with a mounting seat, which is connected to the horizontal boring machine.

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