Planet carrier machining tool for machining center

Abstract

The utility model relates to the technical field of planet carrier machining equipment, in particular to a planet carrier machining tool for a machining center, which comprises a base, clamps annularly distributed by taking the axis of the base as the center are arranged on the top surface of the base, each clamp comprises a clamping plate and a lug fixedly connected with the base, and the lug is rotatably connected with one end of the clamping plate. One side of the base horizontally extends outwards to form a fixing table, the fixing table is rotationally connected with a stand column, the top end of the stand column is fixedly connected with a cover plate, the bottom of the cover plate is provided with a horizontally-placed pressing plate, the edge of the pressing plate is provided with a fixing groove for containing the clamping plate, and a locking hole matched with the fixing hole is formed in the fixing groove. Compared with the prior art, the machining efficiency of the medium-large planet carrier is improved through the technical scheme.

Description

Technical Field

[0001] This utility model relates to the technical field of planetary gear carrier processing equipment, and in particular to a planetary gear carrier processing fixture for a machining center. Background Technology

[0002] The planetary gear carrier is one of the main components of the planetary gear transmission device. It is generally circular, and the planetary gear shafts or bearings are mounted on the planetary gear carrier. The planetary gear carrier has various slots, and it needs to be machined by cutting tools. The machining center is the main equipment for machining the planetary gear carrier, which mainly consists of cutting tools and machining fixtures that fix the planetary gear carrier.

[0003] Existing planetary gear carrier machining fixtures mainly consist of two parts: a multi-axis transmission mechanism and a clamp. During the machining process, the planetary gear carrier needs to be rotated and its angle adjusted multiple times. For small planetary gear carriers, in order to improve machining efficiency, the clamps are basically automatically locked using pneumatic or hydraulic cylinders. However, for medium and large planetary gear carriers, the machining speed of the slots is very slow, and machining a single slot can take several hours or even more than ten hours. Using pneumatic or hydraulic cylinder clamps consumes a lot of energy and is costly. Moreover, the locking effect will decrease over time. Therefore, the machining fixtures for medium and large planetary gear carriers are still mainly mechanical clamps with bolt locking. However, although this type of mechanical clamp is stable, it is cumbersome to disassemble and assemble, and the degree of bolt tightening is greatly affected by the operator's subjectivity. The tightness of each clamp varies, which affects the machining efficiency of the planetary gear carrier.

[0004] Therefore, it is necessary to propose a machining fixture for planetary gear carriers in machining centers to improve the machining efficiency of medium and large planetary gear carriers. Utility Model Content

[0005] The purpose of this invention is to solve the problem of low processing efficiency of existing machining fixtures for medium and large planetary gear carriers. A machining fixture for planetary gear carriers in machining centers is provided.

[0006] The technical solution of this utility model is:

[0007] A planetary gear carrier machining fixture for a machining center includes a base. The top surface of the base is provided with clamps arranged in a ring around the axis of the base. The clamps include a clamping plate and an ear seat fixedly connected to the base. The ear seat is rotatably connected to one end of the clamping plate, and the other end of the clamping plate is provided with a fixing hole.

[0008] One side of the base extends horizontally outward to form a fixed platform. The fixed platform is rotatably connected to a column. A cover plate is fixedly connected to the top of the column. A horizontally placed pressure plate is provided at the bottom of the cover plate. The edge of the pressure plate has a fixing groove for accommodating a clamping plate. The fixing groove has a locking hole that matches the fixing hole. The end of the clamping plate where the fixing hole is located is located in the fixing groove. The fixing hole and the locking hole are connected and fixed by screws. The pressure plate and the cover plate are slidably connected. The cover plate is equipped with a first driving device. The first driving device drives the pressure plate to rise and fall. The fixed platform is equipped with a second driving device. The second driving device drives the column to rotate.

[0009] Furthermore, the first driving device includes a hydraulic cylinder, which is fixed to the top surface of the cover plate. The cover plate has a piston hole, and the piston rod of the hydraulic cylinder passes through the piston hole and is fixedly connected to the pressure plate. The pressure plate is driven to rise and fall by the hydraulic cylinder, which has a large driving force and can meet the driving requirements.

[0010] Furthermore, the cover plate has sliding holes arranged in a ring around the axis of the cover plate. The pressure plate is fixedly connected to a sliding rod, which is also arranged in a ring around the axis of the pressure plate. The sliding rod corresponds to the sliding hole, and slides within the sliding hole. The sliding hole and the sliding rod are used to limit the lifting and lowering of the pressure plate, so that the pressure plate can slide along a fixed preset trajectory when it is lifted and lowered relative to the cover plate, thereby improving the lifting and lowering stability.

[0011] Furthermore, there are at least three sliding holes and at least three sliding rods. The three sliding holes and sliding rods can ensure force balance and improve stability.

[0012] Furthermore, the second drive device includes a motor, a drive gear, and a driven gear. The drive gear is coaxially and fixedly connected to the output shaft of the motor, and the driven gear is coaxially and fixedly connected to the transmission shaft at the bottom of the column. The drive gear and the driven gear mesh and drive each other. Through gear transmission, the motor can drive the column to rotate, thereby aligning the cover plate and the pressure plate with the base or offsetting them from each other.

[0013] Furthermore, the clamps are provided in at least three sets, which are arranged in a ring around the axis of the base. The three sets of clamps limit the pressure plate from three different directions, thereby fixing the base and the pressure plate relatively. When the pressure plate presses against the planetary gear carrier, the clamps can fix the base and the pressure plate as a whole, preventing relative rotation. Although the clamps of this device do not directly fix the planetary gear carrier, they ensure the fixation between the pressure plate and the base, reducing the torsional force on the column.

[0014] Furthermore, an anti-slip plug is detachably connected to the side of the pressure plate opposite to the base. The anti-slip plug is located inside the planetary gear carrier and is fixed to the planetary gear carrier by the pressure plate. The anti-slip plug is made of wear-resistant and anti-slip materials such as rubber. When the pressure plate is pressed on the top of the planetary gear carrier, the anti-slip plug can first enter the inner ring of the planetary gear carrier and contact the inner ring, increasing the friction between the planetary gear carrier and preventing the planetary gear carrier from rotating relative to the pressure plate during processing.

[0015] Furthermore, the anti-slip plug seat and the pressure plate are detachably connected by screws or clips, making it easy to replace anti-slip plug seats of different sizes to adapt to planetary gear carriers of different sizes.

[0016] Furthermore, the anti-slip plug seat comes in various diameter sizes, and the specific model size can be determined according to the size of the planetary gear carrier.

[0017] This utility model discloses a planetary gear carrier machining fixture for a machining center. The planetary gear carrier is placed onto a base using a crane or similar equipment. A second drive device rotates the column, causing the cover plate and pressure plate to rotate horizontally until they are aligned vertically with the base. Then, the second drive device lowers the pressure plate, pressing the planetary gear carrier to secure it. A clamping plate on the base rotates at one end relative to the lug, allowing the other end of the clamping plate to enter the fixing groove of the pressure plate. The clamping plate then provides circumferential restraint to the pressure plate, and because the pressure plate presses down on the planetary gear carrier, the clamping plate also provides circumferential restraint. When the clamping plate is in contact with the fixing groove, the fixing hole and locking hole are perfectly aligned. At this point, the worker only needs to use screws to install the fixture into the fixing and locking holes. By fixing the clamping plate to the fixing groove, the clamping plate can fix the pressure plate and the planetary gear carrier. The degree of locking of the planetary gear carrier is determined by the first driving device and the structural interference generated after the clamping plate enters the fixing groove. It is not affected by the tightness of the bolts, so the degree of locking of the planetary gear carrier is more uniform and consistent, and the tedious bolt disassembly and assembly process is simplified. Moreover, the pressure plate on the planetary gear carrier mainly relies on the pressure plate's own weight. The hydraulic cylinder plays an auxiliary safety role and lifts the pressure plate. Therefore, the hydraulic cylinder will not work continuously during the grooving process, saving energy and avoiding the hidden danger that the locking effect of the hydraulic cylinder will deteriorate due to the long time. Compared with traditional technology, this technical solution improves the processing efficiency of medium and large planetary gear carriers. Attached Figure Description

[0018] Figure 1 This utility model is three-dimensional. Figure 1 ;

[0019] Figure 2 This utility model is three-dimensional. Figure 2 ;

[0020] Figure 3 This utility model Figure 2Main view;

[0021] Figure 4 This utility model Figure 2 Top view.

[0022] Reference numerals in the attached diagram: 1. Base; 2. Clamping plate; 3. Ear seat; 4. Fixing hole; 5. Fixing platform; 6. Column; 7. Cover plate; 8. Pressure plate; 9. Fixing groove; 10. Hydraulic cylinder; 11. Piston hole; 12. Sliding hole; 13. Slide rod; 14. Motor; 15. Drive gear; 16. Driven gear; 17. Anti-slip plug seat; 18. Planetary gear carrier. Detailed Implementation

[0023] To make the technical means, technical features, utility model purpose and technical effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0024] Example 1:

[0025] like Figure 1 and Figure 2 As shown, this embodiment provides a planetary gear carrier machining fixture for a machining center, including a base 1. The top surface of the base 1 is provided with a clamping device arranged in a ring around the axis of the base 1. The clamping device includes a clamping plate 2 and an ear seat 3 welded to the base 1. The ear seat 3 is rotatably connected to one end of the clamping plate 2 by a pin. The other end of the clamping plate 2 is provided with a fixing hole 4. One side of the base 1 extends horizontally outward to form a fixing platform 5. The fixing platform 5 is rotatably connected to a column 6. The top end of the column 6 is fixedly connected to a cover plate 7 by screws. The bottom of the cover plate 7 is provided with a horizontally placed pressure plate 8. The edge of the pressure plate 8 is provided with a fixing groove 9 to accommodate the clamping plate 2. The fixing groove 9 is provided with a locking hole that matches the fixing hole 4. The end of the clamping plate 2 where the fixing hole 4 is located is located in the fixing groove 9. The fixing hole 4 and the locking hole are connected and fixed by screws. The pressure plate 8 is slidably connected to the cover plate 7. The cover plate 7 is equipped with a first driving device, which drives the pressure plate 8 to rise and fall. The fixing platform 5 is provided with a second driving device, which drives the column 6 to rotate.

[0026] Preferred, such as Figure 1 The first driving device includes a hydraulic cylinder 10, which is screwed to the top surface of the cover plate 7. The cover plate 7 has a piston hole 11. The piston rod of the hydraulic cylinder 10 passes through the piston hole 11 and is screwed to the pressure plate 8. The pressure plate 8 is driven to rise and fall by the hydraulic cylinder 10. The hydraulic cylinder 10 has a large driving force and can meet the driving requirements.

[0027] Preferred, such as Figure 1The cover plate 7 has sliding holes 12, which are arranged in a ring around the axis of the cover plate 7. The pressure plate 8 is fixedly connected to a sliding rod 13, which is also arranged in a ring around the axis of the pressure plate 8. The sliding rod 13 corresponds to the sliding hole 12 one by one and slides within the sliding hole 12. The sliding hole 12 and the sliding rod 13 are used to limit the lifting and lowering of the pressure plate 8, so that the pressure plate 8 can slide along a fixed preset trajectory when it is lifted and lowered relative to the cover plate 7, thereby improving the lifting and lowering stability.

[0028] Preferred, such as Figure 1 The sliding holes 12 are provided with at least three, and the sliding rods 13 are provided with at least three. The three sliding holes 12 and the sliding rods 13 can ensure force balance and improve stability. Preferably, the second driving device includes a motor 14, a driving gear 15 and a driven gear 16. The driving gear 15 is coaxially screwed to the output shaft of the motor 14, and the driven gear 16 is coaxially screwed to the transmission shaft at the bottom of the column 6. The driving gear 15 and the driven gear 16 mesh and drive each other. Through gear transmission, the motor 14 can drive the column 6 to rotate, thereby aligning the cover plate 7 and the pressure plate 8 with the base 1 or offsetting them from each other.

[0029] Preferred, such as Figure 1 The fixture has at least three sets, which are arranged in a ring around the axis of the base 1. The three sets of fixtures limit the pressure plate 8 from three different directions, so as to fix the base 1 and the pressure plate 8 relatively. When the pressure plate 8 presses against the planetary gear carrier 18, the fixture can fix the base 1 and the pressure plate 8 into a whole, preventing relative rotation. Although the fixture of this device does not directly fix the planetary gear carrier 18, it ensures the fixation between the pressure plate 8 and the base 1 and reduces the torsional force on the column 6.

[0030] Preferred, such as Figure 3 and Figure 4 A non-slip plug seat 17 is detachably connected to the side of the pressure plate 8 opposite to the base 1. The non-slip plug seat 17 is located inside the planetary gear carrier 18 and is fixed to the planetary gear carrier 18 by the pressure plate 8. The non-slip plug seat 17 is made of wear-resistant and non-slip material such as rubber. When the pressure plate 8 is pressed on the top of the planetary gear carrier 18, the non-slip plug seat 17 can first enter the inner ring of the planetary gear carrier 18 and contact the inner ring, thereby increasing the friction between the non-slip plug seat 17 and the planetary gear carrier 18 and preventing the planetary gear carrier 18 from rotating relative to the pressure plate 8 during processing. Preferably, the non-slip plug seat 17 and the pressure plate 8 are detachably connected by screws or clips, which makes it convenient to replace non-slip plug seats 17 of different sizes to adapt to planetary gear carriers 18 of different sizes. Preferably, the diameter of the non-slip plug seat 17 is available in various sizes, and the specific model size can be determined according to the size of the planetary gear carrier 18.

[0031] As an alternative, the base 1 can be installed on a multi-axis linkage mechanism such as a three-axis, four-axis, or five-axis linkage mechanism, thereby enabling the entire device to have multi-axis linkage capability. Since multi-axis linkage mechanism is a relatively mature technology for mechanical transmission equipment, those skilled in the art can freely choose the installation method according to the actual situation, which will not be elaborated here.

[0032] At work, such as Figure 1 and Figure 2 The planetary gear carrier 18 is placed on the base 1 using a crane or similar equipment. The second drive device rotates the column 6, causing the cover plate 7 and pressure plate 8 to rotate horizontally until they are aligned vertically with the base 1. Then, the second drive device lowers the pressure plate 8, pressing the planetary gear carrier 18. The anti-slip plug 17 is located inside the planetary gear carrier 18, contacting the side wall of the inner ring, thereby increasing friction and fixing the planetary gear carrier 18. The clamping plate 2 on the base 1 is pushed by the worker to rotate one end relative to the ear seat 3, allowing the other end of the clamping plate 2 to enter the fixing groove 9 of the pressure plate 8, thus providing circumferential limiting for the planetary gear carrier 18. When the clamping plate 2 is in contact with the fixing groove 9, the planetary gear carrier 18 is fixed. Hole 4 and locking hole are aligned. The worker uses screws to install into fixing hole 4 and locking hole to fix clamp plate 2 to fixing groove 9, thus completing the fixing of clamp plate 2 to pressure plate 8 and planetary gear carrier 18. Then the cutting tool of the machining center can perform grooving on planetary gear carrier 18. After the machining is completed, the screws in fixing hole 4 are removed and clamp plate 2 is separated from fixing groove 9. The first drive device drives pressure plate 8 to rise, and the second drive device drives column 6 to rotate, so that cover plate 7 and pressure plate 8 are away from the top of base 1 and staggered from each other. At this time, it is convenient for crane or hoist to lift planetary gear carrier 18 from above, completing the machining process of one planetary gear carrier 18.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of the claims of this utility model should fall within the technical scope of this utility model.

Claims

1. A planetary gear carrier machining fixture for a machining center, comprising a base (1), wherein the top surface of the base (1) is provided with clamps arranged in a ring around the axis of the base (1), characterized in that: The clamp includes a clamp plate (2) and an ear seat (3) fixedly connected to the base (1). The ear seat (3) is rotatably connected to one end of the clamp plate (2), and the other end of the clamp plate (2) is provided with a fixing hole (4). One side of the base (1) extends horizontally outward to form a fixed platform (5). The fixed platform (5) is rotatably connected to a column (6). The top of the column (6) is fixedly connected to a cover plate (7). The bottom of the cover plate (7) is provided with a horizontally placed pressure plate (8). The edge of the pressure plate (8) is provided with a fixing groove (9) to accommodate the clamping plate (2). The fixing groove (9) is provided with a locking hole that matches the fixing hole (4). The end of the clamping plate (2) where the fixing hole (4) is located is located in the fixing groove (9). The fixing hole (4) and the locking hole are fixed by screws. The pressure plate (8) is slidably connected to the cover plate (7). The cover plate (7) is equipped with a first driving device. The first driving device drives the pressure plate (8) to rise and fall. The fixed platform (5) is provided with a second driving device. The second driving device drives the column (6) to rotate.

2. The planetary gear carrier machining fixture for a machining center according to claim 1, characterized in that: The first driving device includes a hydraulic cylinder (10), which is fixed on the top surface of the cover plate (7). The cover plate (7) has a piston hole (11), and the piston rod of the hydraulic cylinder (10) passes through the piston hole (11) and is fixedly connected to the pressure plate (8).

3. The planetary gear carrier machining fixture for a machining center according to claim 2, characterized in that: The cover plate (7) has a sliding hole (12). The sliding holes (12) are arranged in a ring around the axis of the cover plate (7). The pressure plate (8) is fixedly connected with a sliding rod (13). The sliding rod (13) is arranged in a ring around the axis of the pressure plate (8). The sliding rod (13) corresponds to the sliding hole (12) one by one. The sliding rod (13) slides in the sliding hole (12).

4. The planetary gear carrier machining fixture for a machining center according to claim 3, characterized in that: There are at least three sliding holes (12) and at least three sliding rods (13).

5. The planetary gear carrier machining fixture for a machining center according to claim 1, characterized in that: The second drive device includes a motor (14), a drive gear (15) and a driven gear (16). The drive gear (15) is coaxially fixedly connected to the output shaft of the motor (14), and the driven gear (16) is coaxially fixedly connected to the transmission shaft at the bottom of the column (6). The drive gear (15) and the driven gear (16) mesh and transmit power.

6. The planetary gear carrier machining fixture for a machining center according to claim 1, characterized in that: The fixture is provided in at least three sets, and the three sets of fixtures are distributed in a ring around the axis of the base (1).

7. The planetary gear carrier machining fixture for a machining center according to claim 1, characterized in that: The pressure plate (8) is detachably connected to the anti-slip plug seat (17) on the side opposite to the base (1). The anti-slip plug seat (17) is located inside the planetary gear carrier (18) and is fixed to the planetary gear carrier (18) by the pressure plate (8).

8. The planetary gear carrier machining fixture for a machining center according to claim 7, characterized in that: The anti-slip plug (17) and the pressure plate (8) are detachably connected by screws or clips.

9. The planetary gear carrier machining fixture for a machining center according to claim 8, characterized in that: The anti-slip plug seat (17) has various diameter sizes.

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