Quick-change fixture for precision boring equidivision hole of cycloid wheel

Abstract

The utility model discloses a kind of quick-change clamps of precise boring cycloidal wheel equidivision hole, comprising: the tray of boring mechanism is installed on, the tray is equipped with the mounting seat for installing cycloidal wheel;The mounting seat side is provided with guiding mechanism, the other side is provided with the positioning mechanism for positioning;The cycloidal wheel is installed in the mounting seat top, guiding mechanism is provided with the positioning pin group matched with the cycloidal wheel tooth profile, the positioning pin group mounting seat is compressed and installed in the positioning mechanism top by adjusting mechanism;The positioning mechanism and the outer tooth line contact clamping of cycloidal wheel.Due to its setting oil pressure tray quick-change system, tray clamping and dismounting are convenient. It is suitable for the processing of different specifications cycloidal wheel.In addition, cycloidal wheel clamping and dismounting are convenient, and it is suitable for batch processing cycloidal wheel. Due to accurate positioning and guiding structure, the position degree of boring cycloidal wheel equidivision hole in the utility model, roundness precision is high.

Description

Technical Field

[0001] This utility model relates to the field of machine tool processing technology, and in particular to a quick-change fixture for precision boring of equally spaced holes in a cycloidal wheel. Background Technology

[0002] Robot joint reducers are core motion control components of industrial robots, and cycloidal wheels are key parts of robot joint reducers. With the rapid development of industrial robots, market demand is strong. Mass production of robot joint reducers is well-suited for using such fixtures to mass-produce cycloidal wheel segments. This results in very high part processing efficiency and low production costs.

[0003] Cycloidal spools are used in groups, and to ensure good consistency among the grouped cycloidal spools, they need to be machined as a group. After rough machining by gear hobbing, the external teeth of the cycloidal spools have very little allowance. Directly clamping two cycloidal spools on the machine tool table makes it difficult to position them using the external teeth, resulting in inaccurate positioning of the external teeth during the finishing of the equally spaced holes. When finishing the external teeth using the equally spaced holes as a reference, the external teeth may not be ground properly, leading to a high scrap rate for the cycloidal spool parts. To avoid scrap, the allowance for the external teeth needs to be increased, which results in very low machining efficiency for the cycloidal spools. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies, the purpose of this utility model is to provide a quick-change fixture for precision boring of equally spaced holes in cycloidal wheels.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A quick-change fixture for precision boring of equally spaced holes of a cycloidal wheel includes: a tray mounted on a boring mechanism, wherein a mounting seat for mounting the cycloidal wheel is mounted on the tray;

[0007] The mounting base is provided with a guide mechanism on one side and a positioning mechanism for positioning on the other side; the cycloidal wheel is mounted on the top of the mounting base, and the guide mechanism is provided with a positioning pin group that matches the tooth profile of the cycloidal wheel. The positioning pin group mounting base is pressed and mounted on the top of the positioning mechanism by an adjustment mechanism; the positioning mechanism is engaged with the outer tooth line of the cycloidal wheel.

[0008] The tray is mounted on the boring mechanism via a mounting mechanism, which includes a base plate mounted on the boring mechanism, a vertical plate on the base plate, a base plate horizontally mounted on the vertical plate, the tray mounted on the base plate, and the mounting seat and positioning mechanism mounted on the tray.

[0009] The edge of the tray is fitted with eye bolts for disassembly.

[0010] A first positioning pin and a guide pin are mounted on the base plate. A positioning sleeve is provided on the first positioning pin. The tray is mounted on the first positioning pin and the guide pin.

[0011] The guiding mechanism includes: a guide seat mounted on a pallet; a pull-down block and a lower support block are provided on one side of the guide seat, and the pull-down block and the lower support block are fixed to the pallet by a second hexagon socket head cap screw; slotted tapered set screws are provided on the sides of the pull-down block and the lower support block, and the slotted tapered set screws cooperate with the second hexagon socket head cap screws to adjust the center of the guide seat slot; a locating pin assembly is installed on the top of the guide seat and is pressed by a guide cover; an upper pull-down block and an upper support block are installed on one side of the guide seat.

[0012] The positioning pin assembly includes a retractable lower positioning pin and an upper positioning pin, the front ends of which engage with the cycloidal gear.

[0013] The lower and upper positioning pins are provided with guide posts at their ends, and springs are fitted at the ends of the guide posts. The springs are fixed by end caps and third internal hexagonal head screws.

[0014] The adjustment mechanism includes: a plate rod is provided on the guide cover, the plate rod has an installation groove, a stop block and a pin are installed in the installation groove, a first cylindrical pin is installed on the stop block, the pin is fixed by a shaft elastic retaining ring, a second cylindrical pin is inserted into the plate rod groove, the plate rod is fixed by screws and can rotate freely; a handle ball is installed at the end of the plate rod, and a double-ended bolt is installed on the handle ball.

[0015] A lubricating oil cup is provided in the hole of the guide cover.

[0016] The positioning mechanism includes: a positioning seat, a countersunk hole provided on the positioning seat, a fifth internal hexagon socket head cap screw installed in the countersunk hole, and a plug for sealing the countersunk hole also provided in the countersunk hole.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention provides a quick-change fixture for precision boring of equally spaced holes in cycloidal wheels. Due to its hydraulic tray quick-change system, tray clamping and disassembly are convenient. It is suitable for machining cycloidal wheels of different specifications. Furthermore, the easy clamping and disassembly of the cycloidal wheels makes it suitable for batch processing. Thanks to its precise positioning and guiding structure, the positional accuracy and roundness of the equally spaced holes in the boring cycloidal wheels produced by this invention are high. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the quick-change fixture structure for precision boring of cycloidal wheel dividing holes according to this utility model;

[0020] Figure 2 This is a top view of the quick-change fixture for precision boring of cycloidal wheel dividing holes according to this utility model;

[0021] Figure 3 This is a utility model Figure 2 DD sectional view;

[0022] Figure 4 This is a schematic diagram of the quick-change fixture installation mechanism for precision boring of cycloidal wheel dividing holes according to this utility model;

[0023] Figure 5 This is a utility model Figure 2 BB cross-sectional view;

[0024] Figure 6 This is a utility model Figure 2 AA section view;

[0025] Figure 7 This is a utility model Figure 5 EE sectional view;

[0026] Figure 8 This is a utility model Figure 5 FF sectional view;

[0027] Figure 9 This is a utility model Figure 2 CC section view.

[0028] In the diagram, 1—base plate; 2—base plate; 3—tray; 4—eye bolt; 5—first socket head cap screw; 6—lower tension block; 7—lower support block; 8—upper tension block; 9—upper support block; 10—slotted tapered set screw; 11—second socket head cap screw; 12—plate rod; 13—lubricating oil cup; 14—third socket head cap screw; 15—stop block; 16—pin; 17—first cylindrical pin; 18—double-ended bolt; 19—handle ball; 20—elastic retaining ring; 21—fourth socket head cap screw; 22—locating seat; 23—fifth socket head cap screw; 24—plug; 25— Mounting base 26—Pressure cap; 27—Sixth socket head cap screw; 28—Seventh socket head cap screw; 29—Lower locating pin; 30—Upper locating pin; 31—Second cylindrical pin; 32—Guide post; 33—End cap; 34—Spring; 35—Vertical plate; 36—Slotted cylindrical head screw; 37—Guide key; 38—Eighth socket head cap screw; 39—Guide seat; 40—Guide cover; 41—Screw; 42—Third cylindrical pin; 43—Ninth socket head cap screw; 44—Tenth socket head cap screw; 45—Guide sleeve; 46—Guide pin; 47—Locking sleeve; 48—First locating pin; 49—Cycloidal wheel. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0030] like Figure 1 , 2 As shown, this utility model provides a quick-change fixture for precision boring of equally spaced holes of cycloidal wheels, including: a tray 3, on which a mounting seat 25 for mounting cycloidal wheels 49 is installed;

[0031] The mounting base 25 has a guide mechanism on one side and a positioning mechanism on the other side; the cycloidal wheel 49 is mounted on the top of the mounting base 25, and the guide mechanism is provided with a positioning pin assembly that matches the gear of the cycloidal wheel 49. The positioning pin assembly mounting base 25 is pressed and mounted on the top of the positioning mechanism by an adjustment mechanism; the positioning mechanism is engaged with the external tooth line of the cycloidal wheel 49.

[0032] It should be noted that in this utility model, the mounting base 25 has a hollow structure. During boring, the iron filings generated will be flushed to the hollow part of the mounting base by the coolant, and either flushed to the bottom or out through the side hole of the mounting base, thereby preventing the iron filings from scratching the boring hole.

[0033] like Figure 3 , 4 The tray 3 is mounted on the boring mechanism via a mounting mechanism, which includes a base plate 1 mounted on the boring mechanism, a vertical plate 35 mounted on the base plate 1, a base plate 2 horizontally mounted on the vertical plate 35, and the base plate 2 fixed to the vertical plate 35 by first hexagon socket head cap screws 5. The tray 3 is mounted on the base plate 2, and the mounting seat 25 and the positioning mechanism are also mounted on the tray 3. Preferably, the edge of the tray 3 is equipped with a lifting eye screw 4 for disassembly. A first positioning pin 48 and a guide pin 46 are mounted on the base plate 2. A positioning sleeve 47 is provided on the first positioning pin 48. The first positioning pin 48 is fixedly mounted on the base plate 2 by tenth hexagon socket head cap screws 44. The tray 3 is mounted on the first positioning pin 48 and the guide pin 46, and the positioning sleeve 47 and the guide sleeve 45 are fixed to the bottom of the tray 3 by ninth hexagon socket head cap screws 43.

[0034] like Figure 5 , 6As shown, the guiding mechanism includes: a guide seat 39 mounted on the tray 3, which is fixed to the tray 3 by an eighth hexagon socket head cap screw 38. A pull-down block 6 and a lower support block 7 are provided on one side of the guide seat 39, and the pull-down block 6 and the lower support block 7 are fixed to the tray 3 by a second hexagon socket head cap screw 11; slotted conical set screws 10 are provided on the sides of the pull-down block 6 and the lower support block 7, and the slotted conical set screws 10 cooperate with the second hexagon socket head cap screws 11 to adjust the center of the slot of the guide seat 39. Specifically, as shown... Figure 7 As shown, the second hexagon socket head cap screw 11 fixes the two pull-down blocks 6 and the lower support block to the tray 3. The two second hexagon socket head cap screws 11 pull the guide seat 39, and the slotted cone-end set screw 10 moves in the opposite direction to the guide seat 39. This pull and reversal adjusts the center of the slot of the guide seat 39. After adjustment, the slotted cone-end set screw 10 is tightened with a nut. The eighth hexagon socket head cap screw 38 secures the guide seat 39 to the tray 3. The slotted socket head cap screw 36 tightens the guide key 37 into the keyway of the tray 3; the locating pin assembly is installed on the top of the guide seat 39 and is pressed by the guide cover 40; as Figure 8 As shown, an upper tension block 8 and an upper support block 9 are installed on one side of the guide seat 39, and the upper tension block 8 and the upper support block 9 are fixed to the guide seat 39 with a second hexagon socket head cap screw 11.

[0035] Preferably, such as Figure 6 As shown, the positioning pin assembly in this utility model includes a retractable lower positioning pin 29 and an upper positioning pin 30, the front ends of which engage with the cycloidal wheel 49. Guide posts 32 are provided at the ends of the lower positioning pin 29 and the upper positioning pin 30, and springs 34 are fitted onto the ends of the guide posts 32. The springs 34 are fixed by end caps 33 and third hexagon head screws 14. The guide posts 32 are inserted into the upper positioning pin 30 and the lower positioning pin 29. The guide cap 40, which contains the upper positioning pin 30 and the first cylindrical pin 31, is fixed to the guide seat 39 using fourth hexagon head screws 21. The lower positioning pin 29 is inserted into the groove of the guide seat 39. For example, the spring 34 is fitted onto the guide post 32, and the end cap 33 is fixed using the third hexagon head screw 14.

[0036] like Figure 5As shown, the adjusting mechanism includes: a plate rod 12 is provided on the guide cover 40; the plate rod 12 has an installation groove; a stop block 15 and a pin 16 are installed in the installation groove; a first cylindrical pin 17 is installed on the stop block 15; the pin 16 is fixed by a shaft elastic retaining ring 20; a second cylindrical pin 31 is fitted into the groove of the plate rod 12; the plate rod 12 is fixed by screws 41; a handle ball 19 is installed at the end of the plate rod 12; a double-ended bolt 18 is installed on the handle ball 19. Additionally, a lubricating oil cup 13 is provided in the hole of the guide cover 40. The handle ball 19 is inserted into the double-ended bolt 18, and the double-ended bolt 18 is inserted into the plate rod 12. The first cylindrical pin 17 is inserted into the stop block 15. The stop block 15 and the pin 16 are installed together into the plate rod 12, and the shaft elastic retaining ring 20 fixes the position of the pin 16. The second cylindrical pin 31 is inserted into the groove of the plate rod 12, and the plate rod 12 is fixed with screw 41.

[0037] like Figure 9 As shown, the positioning mechanism includes: a positioning seat 22, on which a countersunk hole is provided, a fifth hexagon socket head cap screw 23 is installed in the countersunk hole, and a plug 24 for sealing the countersunk hole is also provided in the countersunk hole. Specifically, a third cylindrical pin 42 is inserted into the positioning seat 22 and the tray 3 hole. The positioning seat 22 is tightened with the fifth hexagon socket head cap screw 23. The plug 24 seals the countersunk hole of the positioning seat 22.

[0038] Installation of mounting base 25: Secure mounting base 25 to tray 3 using seventh socket head cap screw 28.

[0039] When using a quick-change fixture for boring the cycloidal wheel's dividing holes, the base plate 1 is fixed to the machine tool table. The tray 3 is lifted onto the base plate 2 using eye bolts 4, and then locked in place by hydraulic pressure. The cycloidal wheel is placed on the mounting base 25. Rotating the plate rod 12 causes the upper locating pin 30 and lower locating pin 29 to automatically center the cycloidal wheel. The pressure cap 26 is then fixed with sixth socket head cap screws 27, allowing the boring of the cycloidal wheel's dividing holes to proceed. After the cycloidal wheel is machined, the pressure cap 26 is removed, and the next pair of cycloidal wheels is re-clamped. This process is repeated to allow for batch machining of cycloidal wheel dividing holes.

[0040] In this invention, the arc surfaces of the lower and upper locating pins contact the external teeth of the cycloidal wheel. Using the elastic force of a spring, the two cycloidal wheels on the mounting base are pushed to contact the arc surfaces of the locating base. The arc surfaces of the locating base then contact the external teeth of the cycloidal wheel, achieving cycloidal wheel positioning. The screws are then tightened on the pressure cap, clamping the cycloidal wheel. After the cycloidal wheel's equally spaced holes are precision bored, the handle ball is turned, the stop block engages in the groove of the guide cover, and the lower and upper locating pins disengage from the cycloidal wheel. The screws are then loosened, the pressure cap is removed, and the cycloidal wheel is disassembled. After the base plate, base plate, and vertical plate are screwed together, they are fixed to the machine tool table. The base plate is connected to the air and oil circuits. Four locating pins and two guide pins are installed on the base plate to form a hydraulic quick-change system. For cycloidal wheels with different parameters, the arc parameters of the locating base on the fixture and the arc surfaces of the lower and upper locating pins must also be changed accordingly. By simply remanufacturing the parts above the base plate, clamping a cycloidal wheel of another specification can be achieved. The hydraulic quick-change system enables rapid clamping of cycloidal wheel fixtures of different specifications. It offers high fixture utilization and high fixture change efficiency, while reducing fixture manufacturing costs.

[0041] It will be apparent to those skilled in the art that the above specific examples are merely preferred embodiments of this utility model. Therefore, any improvements or modifications that those skilled in the art may make to certain parts of this utility model still embody the principles of this utility model and achieve its purpose, and all fall within the scope of protection of this utility model.

Claims

1. A quick-change fixture for precision boring of equally spaced holes in a cycloidal wheel, characterized in that, include: The tray (3) is equipped with a mounting base (25) for mounting the cycloidal wheel (49). The mounting base (25) is provided with a guide mechanism on one side and a positioning mechanism for positioning on the other side; the cycloidal wheel (49) is mounted on the top of the mounting base (25), and the guide mechanism is provided with a positioning pin group that matches the tooth profile of the cycloidal wheel (49). The positioning pin group mounting base (25) is pressed and mounted on the top of the positioning mechanism by an adjustment mechanism; the positioning mechanism is engaged with the outer tooth line of the cycloidal wheel (49).

2. The quick-change fixture for precision boring of equally spaced holes in a cycloidal wheel according to claim 1, characterized in that, The tray (3) is mounted on the boring mechanism by a mounting mechanism, which includes a base plate (1) mounted on the boring mechanism, a vertical plate (35) on the base plate (1), a base plate (2) horizontally mounted on the vertical plate (35), the tray (3) mounted on the base plate (2), and the mounting seat (25) and the positioning mechanism mounted on the tray (3).

3. The quick-change fixture for precision boring of cycloidal wheel dividing holes according to claim 2, characterized in that, The edge of the tray (3) is fitted with eye bolts (4) for disassembly.

4. The quick-change fixture for precision boring of cycloidal wheel dividing holes according to claim 2, characterized in that, The base plate (2) is equipped with a first positioning pin (48) and a guide pin (46), and a positioning sleeve (47) is provided on the first positioning pin (48). The tray (3) is installed on the first positioning pin (48) and the guide pin (46).

5. The quick-change fixture for precision boring of cycloidal wheel dividing holes according to claim 1 or 2, characterized in that, The guiding mechanism includes: a guide seat (39) mounted on a tray (3), a pull-down block (6) and a lower support block (7) provided on one side of the guide seat (39), the pull-down block (6) and the lower support block (7) being fixed to the tray (3) by a second internal hexagonal head screw (11); slotted conical end set screws (10) provided on the side of the pull-down block (6) and the lower support block (7), the slotted conical end set screws (10) cooperating with the second internal hexagonal head screws (11) to adjust the center of the slot of the guide seat (39); the positioning pin group is installed on the top of the guide seat (39) and pressed by the guide cover (40); an upper pull-down block (8) and an upper support block (9) are installed on one side of the guide seat (39).

6. The quick-change fixture for precision boring of cycloidal wheel dividing holes according to claim 5, characterized in that, The positioning pin assembly includes a retractable lower positioning pin (29) and an upper positioning pin (30), the front ends of which engage with the gear of the cycloidal wheel (49).

7. The quick-change fixture for precision boring of equally spaced holes in a cycloidal wheel according to claim 6, characterized in that, The lower positioning pin (29) and the upper positioning pin (30) are provided with guide posts (32), and the end of the guide post (32) is fitted with a spring (34). The spring (34) is fixed by an end cap (33) and a third internal hexagonal head screw (14).

8. The quick-change fixture for precision boring of cycloidal wheel dividing holes according to claim 5, characterized in that, The adjustment mechanism includes: a plate rod (12) is provided on the guide cover (40), the plate rod (12) is provided with an installation groove, a stop block (15) and a pin (16) are installed in the installation groove, a first cylindrical pin (17) is installed on the stop block (15), the pin (16) is fixed by a shaft elastic retaining ring (20), a second cylindrical pin (31) is inserted into the groove of the plate rod (12), the plate rod (12) is fixed by a screw (41) and can rotate freely; a handle ball (19) is installed at the end of the plate rod (12), and a double-ended bolt (18) is installed on the handle ball (19).

9. The quick-change fixture for precision boring of equally spaced holes in a cycloidal wheel according to claim 8, characterized in that, A lubricating oil cup (13) is provided in the hole of the guide cover (40).

10. The quick-change fixture for precision boring of equally spaced holes in a cycloidal wheel according to claim 1 or 2, characterized in that, The positioning mechanism includes: a positioning seat (22), a countersunk hole provided on the positioning seat (22), a fifth internal hexagonal head screw (23) installed in the countersunk hole, and a plug (24) for sealing the countersunk hole is also provided in the countersunk hole.

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