Clamping device for gear honing machining

Abstract

The invention relates to a clamping device for gear honing machining, and belongs to the field of part clamping machining equipment. Comprising a rack which defines a mounting cavity; the clamping shaft is rotationally arranged in the mounting cavity, one end of the clamping shaft is provided with a clamping part, and the clamping part is provided with a clamping cavity matched with the outer diameter of a gear blank of the honing gear to be machined; a fixing hole communicated with the clamping cavity is formed in the clamping shaft in the radial direction, the fixing structure is arranged in the fixing cavity, and a part of the fixing structure extends into the clamping cavity and is fixedly connected with the gear blank of the gear to be honed; the releasing structure is arranged at the end, away from the clamping part, of the clamping shaft, and the releasing structure is configured to be matched with the fixing structure, so that the fixing structure releases the to-be-machined honing gear blank; and the driving unit is in transmission connection with the clamping shaft and used for driving the clamping shaft to rotate. According to the clamping device for gear honing machining, the stability and accuracy of the clamping shaft in the machining process are high, and the machining effect and the product quality are improved.

Description

Technical Field

[0001] The invention belongs to the field of parts clamping processing equipment and relates to a clamping device used for gear honing. Background Art

[0002] In the field of modern mechanical manufacturing, gears are key components in the transmission system, and their processing accuracy directly affects the performance and life of the entire mechanical system. In order to meet the increasing precision requirements, gear processing technology continues to develop, among which high-power gear honing technology has been widely used as an efficient super-precision grinding method.

[0003] Power honing is a technology that uses a honing wheel to perform precision machining on gears, which can effectively improve the surface quality and dimensional accuracy of gears. Compared with traditional gear grinding technology, power honing has the advantages of high processing efficiency, low surface roughness, and high processing accuracy. When the power honing technology of the existing technology is used for processing, the honing tooth blank is generally clamped on a clamping member (such as a chuck). During the processing, the honing tooth blank may shake, resulting in product scrapping. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a clamping device for gear honing, by extending the gear blank to be honed into the clamping cavity of the clamping part for fixing, so that the load is close to the supporting structure of the clamping shaft, thereby reducing the deflection deformation of the clamping shaft, enhancing the rotational rigidity of the clamping shaft, ensuring the stability and accuracy of the clamping shaft during the processing, thereby improving the processing effect and product quality.

[0005] To achieve the above object, the present invention provides a clamping device for gear honing, comprising:

[0006] A frame defining a mounting cavity;

[0007] A clamping shaft is rotatably arranged in the installation cavity, one end of the clamping shaft has a clamping portion, and the clamping portion has a clamping cavity matching the outer diameter of the gear blank to be honed;

[0008] The fixing structure is provided with a fixing hole in the radial direction of the clamping shaft and is communicated with the clamping cavity. The fixing structure is arranged in the fixing cavity. Part of the fixing structure extends into the clamping cavity and is fixedly connected to the gear blank to be honed.

[0009] A release structure is arranged at one end of the clamping shaft away from the clamping portion, and the release structure is configured to cooperate with the fixing structure so that the fixing structure releases the gear blank to be honed;

[0010] The driving unit is connected to the clamping shaft and is used to drive the clamping shaft to rotate.

[0011] Optionally, the fixing structure includes a pull rod and a first limit member, the pull rod is inserted into the fixing hole, one end of the pull rod extends into the clamping cavity and is fixedly connected to the gear blank to be honed; the first limit member is arranged at the end of the pull rod away from the clamping portion, the pull rod slides through the first limit member, an abutment ring protrudes from the peripheral side of the first limit member, a limiting hole is coaxially provided in the fixing hole, the first limit member is located in the limiting hole, and a side wall of the limiting hole is opposite to the abutment ring along the axial direction of the clamping axis.

[0012] Optionally, the fixing structure further includes an elastic member, and two ends of the elastic member are respectively in contact with the limiting hole and the surface opposite to the abutment ring.

[0013] Optionally, a limit plate is fixedly installed on the end of the clamping shaft away from the clamping part at the fixing hole, the limit plate blocks the limit hole, and the first limit piece and the limit plate are opposite to each other along the axis of the clamping shaft. One end of the pull rod away from the clamping part slides through the limit plate, and a second limit piece is arranged on the pull rod, and the second limit piece is located on the side of the limit plate away from the first limit piece.

[0014] Optionally, the release structure includes a push rod, which is telescopically arranged on the frame, and the push rod is opposite to one end of the pull rod passing through the limit plate.

[0015] Optionally, the release structure also includes a cylinder, a cylinder body of the cylinder is fixedly mounted on the frame, a telescopic end of the cylinder is fixedly connected to the push rod, and a telescopic direction of the telescopic end of the cylinder is parallel to the axis of the clamping shaft.

[0016] Optionally, a first end cover and a second end cover are provided at both ends of the clamping shaft in the length direction, and an inverted cone annular groove is circumferentially formed on the first end cover and the second end cover, and a sectioned tapered counterweight is provided in the inverted cone annular groove.

[0017] Optionally, the clamping shaft is rotatably mounted on a bearing seat on the frame through a bearing.

[0018] The clamping device for gear honing also includes a cooling circuit, the cooling circuit flows through the bearing seat, and the cooling water inlet and the cooling water outlet of the cooling circuit are both arranged on the outer wall of the bearing seat.

[0019] Optionally, a second end cover located at one end of the clamping portion of the clamping shaft is sealingly connected to the frame.

[0020] Optionally, an airtight channel is provided on the connecting surface between the frame and the second end cover, the outlet of the airtight channel is spaced apart from the edge of the connecting surface between the frame and the second end cover, the inlet of the airtight channel is located on the frame, and the inlet of the airtight channel is connected to a blowing device.

[0021] Optionally, along the axial direction of the clamping shaft, a Z-shaped connecting end surface is provided between the frame and the second end cover, and the outlet of the airtight passage is located radially outside the Z-shaped connecting end surface along the clamping shaft.

[0022] The beneficial effects of the present invention are:

[0023] The clamping device for gear honing provided by the present invention has a gear blank to be processed inserted into a clamping cavity of a clamping part, a fixing structure fixes the gear blank to be processed during the processing, and a releasing structure releases the gear blank to be processed after the processing is completed, thereby completing the processing. By inserting the gear blank to be processed into the clamping cavity of the clamping part for fixing, the load is close to the supporting structure of the clamping shaft, the deflection deformation of the clamping shaft is reduced, the rotation rigidity of the clamping shaft is enhanced, and the stability and accuracy of the clamping shaft during the processing are ensured, thereby improving the processing effect and product quality.

[0024] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0026] Figure 1 A schematic diagram of the structure of a clamping device for gear honing provided by the present invention;

[0027] Figure 2 A schematic diagram of the structure of the fixing structure and the releasing structure of the clamping device for gear honing provided by the present invention;

[0028] Figure 3 A schematic diagram of the arrangement of the cooling water inlet and the cooling water outlet of the cooling circuit of the clamping device for gear honing provided by the present invention;

[0029] Figure 4 This is a schematic structural diagram of the sealing connection between the second end cover of the clamping device for gear honing provided by the present invention and the frame in an embodiment of the present invention;

[0030] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0031] Reference numerals:

[0032] 1-frame; 11-bearing seat; 2-clamping shaft; 21-clamping part; 3-fixing structure; 31-pull rod; 32-first limit member; 321-abutment ring; 33-limiting hole; 34-elastic member; 35-limiting plate; 36-second limit member; 4-release structure; 41-top rod; 42-cylinder; 421-telescopic end; 5-drive unit; 6a-first end cover; 6b-second end cover; 61-reverse cone annular groove; 62-sectioned taper counterweight; 7-cooling circuit; 8-airtight passage; 9-Z-shaped connecting end face. DETAILED DESCRIPTION

[0033] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0034] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0035] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] See also Figure 1 to Figure 5, is a clamping device for honing, and the clamping device may include: a frame 1, a clamping shaft 2, a fixing structure 3, a releasing structure 4, and a driving unit 5. The frame 1 defines an installation cavity; the clamping shaft 2 is rotatably arranged in the installation cavity, one end of the clamping shaft 2 has a clamping portion 21, and the clamping portion 21 has a clamping cavity matching the outer diameter of the gear blank to be processed and honed; the clamping shaft 2 is radially provided with a fixing hole connected to the clamping cavity, the fixing structure 3 is arranged in the fixing cavity, and a part of the structure of the fixing structure 3 extends into the clamping cavity and is fixedly connected to the gear blank to be processed and honed; the releasing structure 4 is arranged at one end of the clamping shaft 2 away from the clamping portion 21, and the releasing structure 4 is configured to cooperate with the fixing structure 3 so that the fixing structure 3 releases the gear blank to be processed and honed; the driving unit 5 (such as a driving motor) is transmission-connected to the clamping shaft 2, and is used to drive the clamping shaft 2 to rotate.

[0037] In the clamping device for gear honing of the present invention, the gear blank to be honed is inserted into the clamping cavity of the clamping part 21, the fixing structure 3 fixes the gear blank to be honed during the processing, and the releasing structure 4 releases the gear blank to be honed after the processing is completed, thereby completing the processing. By inserting the gear blank to be honed into the clamping cavity of the clamping part 21 for fixing, the load is close to the supporting structure of the clamping shaft 2, the deflection deformation of the clamping shaft 2 is reduced, the rotation rigidity of the clamping shaft 2 is enhanced, and the stability and accuracy of the clamping shaft 2 during the processing are ensured, thereby improving the processing effect and product quality.

[0038] In some optional embodiments, the fixing structure 3 includes a pull rod 31 and a first limiter 32. The pull rod 31 is inserted into the fixing hole. One end of the pull rod 31 extends into the clamping cavity and is fixedly connected to the gear blank to be honed, so that the gear blank to be honed is fixed during processing. The first limiter 32 is provided at one end of the pull rod 31 away from the clamping portion 21. The pull rod 31 slides through the first limiter 32. An abutment ring 321 protrudes from the circumference of the first limiter 32. A limiter hole 33 is coaxially provided in the fixing hole. The first limiter 32 is located in the limiter hole 33, and a side wall of the limiter hole 33 is opposite to the abutment ring 321 along the axial direction of the clamping shaft 2. The fixing structure 3 also includes an elastic member 34. The two ends of the elastic member 34 abut against the relative surfaces of the limiter hole 33 and the abutment ring 321, respectively. Through the elastic effect of the elastic member 34, after the to-be-processed honed gear blank and the pull rod 31 are fixed by screw connection or welding, the elastic member 34 applies a force toward the clamping cavity to the to-be-processed honed gear blank through the pull rod 31 to fix it. Optionally, the elastic member 34 may include but is not limited to a spring, a silicone sleeve or a rubber sleeve, which is beneficial to saving equipment costs.

[0039] In some optional embodiments, a limiting plate 35 is fixedly installed on the end of the clamping shaft 2 away from the clamping part 21 in the fixing hole, and the limiting plate 35 blocks the limiting hole 33. The first limiting member 32 is opposite to the limiting plate 35 along the axis of the clamping shaft 2. The end of the pull rod 31 away from the clamping part 21 slides through the limiting plate 35. A second limiting member 36 is provided on the pull rod 31. The second limiting member 36 is located on the side of the limiting plate 35 away from the first limiting member 32, so as to prevent the pull rod 31 and the first limiting member 32 from escaping from the limiting hole 33, which is beneficial to improving the stability of the structure.

[0040] In some optional embodiments, the release structure 4 includes a push rod 41, which is telescopically arranged on the frame 1, and the push rod 41 is opposite to the end of the pull rod 31 passing through the limit plate 35. In this way, the pull rod 31 is pushed by the push rod 41 so that the pull rod 31 drives the gear blank to be processed and honed to be disengaged from the clamping cavity, which is convenient for loading and unloading.

[0041] In some optional embodiments, the release structure 4 further includes a cylinder 42, the cylinder body of the cylinder 42 is fixedly mounted on the frame 1, the telescopic end 421 of the cylinder 42 is fixedly connected to the push rod 41, and the telescopic direction of the telescopic end 421 of the cylinder 42 is parallel to the axis of the clamping shaft 2. In this way, the push rod 41 is driven to move the push rod 31 through the telescopic end 421 of the cylinder 42, and the gear blank to be processed for honing is replaced, which has a simple structure and is automated, which is conducive to improving production efficiency.

[0042] In some optional embodiments, the clamping shaft 2 is provided with a first end cap 6a and a second end cap 6b at both ends along the length direction, and an inverted cone annular groove 61 is opened circumferentially on the first end cap 6a and the second end cap 6b, and a cut-off taper counterweight 62 is provided in the inverted cone annular groove 61. In this way, during assembly or after a long period of production, the clamping shaft 2 can be sent to a laboratory for a dynamic balancing experiment, and by changing the position of the cut-off taper counterweight 62 and adjusting the unequal level of the clamping shaft 2 to a preset level with a dynamic balancing instrument, the clamping shaft 2 can be assembled back onto the clamping device for honing, which is conducive to improving the processing accuracy.

[0043] In some optional embodiments, the clamping shaft 2 is rotatably mounted on the bearing seat 11 on the frame 1 through a bearing, and the clamping device for gear honing further includes: a cooling circuit 7, the cooling circuit 7 flows through the bearing seat 11, and the cooling water inlet and the cooling water outlet of the cooling circuit 7 are both arranged on the outer wall of the bearing seat 11. By circulating cooling water into the cooling circuit 7 during the machining process, the working temperature of the clamping shaft 2 is reduced, thereby extending the service life of the clamping device for gear honing.

[0044] In some optional embodiments, the second end cover 6b at one end of the clamping portion 21 of the clamping shaft 2 is sealed and connected to the frame 1. In this way, oil mist can be prevented from entering the clamping shaft 2 during processing, thereby extending the service life of the clamping shaft 2.

[0045] In some optional embodiments, an airtight channel 8 may be provided on the connection surface between the frame 1 and the second end cover 6b, the outlet of the airtight channel 8 is spaced from the edge of the connection surface between the frame 1 and the second end cover 6b, the inlet of the airtight channel 8 is located on the frame 1, and the inlet of the airtight channel 8 is connected to a blowing device. In this way, during the processing, gas is continuously introduced into the airtight channel 8, and the oil mist is affected by the blowing away from the main shaft and will not enter the main shaft. Optionally, the second end cover 6b can be provided on the side of the bearing seat 11 on the frame 1 away from the installation cavity, and the airtight channel 8 can pass through the bearing seat 11, so that the structure of the clamping device is more compact and easy to assemble.

[0046] In some optional embodiments, along the axial direction of the clamping shaft 2, a Z-shaped connecting end face 9 is provided between the frame 1 and the second end cover 6b, and the outlet of the airtight passage 8 is located radially outside the Z-shaped connecting end face 9 along the clamping shaft 2. By setting the Z-shaped connecting end face, in cooperation with the airtight passage 8, the sealing effect of the clamping device used for gear honing is enhanced, which is beneficial to prolonging the service life of the clamping shaft 2.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A clamping device for gear honing, characterized in that: include: A frame (1) defines a mounting cavity; A clamping shaft (2) is rotatably disposed in the installation cavity, one end of the clamping shaft (2) is provided with a clamping portion (21), and the clamping portion (21) has a clamping cavity matching the outer diameter of a gear blank to be honed; The fixing structure (3) is provided with a fixing hole in the radial direction of the clamping shaft (2) and is communicated with the clamping cavity. The fixing structure (3) is arranged in the fixing cavity. Part of the fixing structure (3) extends into the clamping cavity and is fixedly connected to the gear blank to be honed. A release structure (4) is arranged at one end of the clamping shaft (2) away from the clamping portion (21), and the release structure (4) is configured to cooperate with the fixing structure (3) so that the fixing structure (3) releases the gear blank to be honed; The driving unit (5) is in driving connection with the clamping shaft (2) and is used for driving the clamping shaft (2) to rotate.

2. The clamping device for gear honing according to claim 1, characterized in that: The fixing structure (3) comprises a pull rod (31) and a first stopper (32); the pull rod (31) is inserted into the fixing hole; one end of the pull rod (31) extends into the clamping cavity and is fixedly connected to the gear blank to be honed; The first limiting member (32) is arranged at one end of the pull rod (31) away from the clamping portion (21), the pull rod (31) slides through the first limiting member (32), an abutment ring (321) protrudes from the circumference of the first limiting member (32), a limiting hole (33) is coaxially provided in the fixing hole, the first limiting member (32) is located in the limiting hole (33), and a side wall of the limiting hole (33) is opposite to the abutment ring (321) along the axial direction of the clamping shaft (2); The fixing structure (3) further comprises an elastic member (34), and two ends of the elastic member (34) are respectively in contact with the limiting hole (33) and the surfaces opposite to the contact ring (321).

3. The clamping device for gear honing according to claim 2, characterized in that: A limiting plate (35) is fixedly mounted on the clamping shaft (2) at one end of the fixing hole away from the clamping portion (21), the limiting plate (35) blocks the limiting hole (33), and the first limiting member (32) and the limiting plate (35) are opposite to each other along the axis of the clamping shaft (2); One end of the pull rod (31) away from the clamping portion (21) slides through the limit plate (35), and a second limit member (36) is provided on the pull rod (31). The second limit member (36) is located on a side of the limit plate (35) away from the first limit member (32).

4. The clamping device for gear honing according to claim 3, characterized in that: The release structure (4) comprises a push rod (41), which is telescopically arranged on the frame (1), and the push rod (41) is opposite to one end of the pull rod (31) that passes through the limit plate (35).

5. The clamping device for gear honing according to claim 4, characterized in that: The release structure (4) also includes a cylinder (42), the cylinder body of the cylinder (42) is fixedly mounted on the frame (1), the telescopic end (421) of the cylinder (42) is fixedly connected to the push rod (41), and the telescopic direction of the telescopic end (421) of the cylinder (42) is parallel to the axis of the clamping shaft (2).

6. The clamping device for gear honing according to claim 1, characterized in that: A first end cover (6a) and a second end cover (6b) are provided at both ends of the clamping shaft (2) in the length direction. The first end cover (6a) and the second end cover (6b) are both circumferentially provided with an inverted cone annular groove (61), and a sectioned tapered counterweight (62) is provided in the inverted cone annular groove (61).

7. The clamping device for gear honing according to claim 1, characterized in that: The clamping shaft (2) is rotatably mounted on a bearing seat (11) on the frame (1) through a bearing. The clamping device for gear honing also includes a cooling circuit (7), the cooling circuit (7) flows through the bearing seat (11), and the cooling water inlet and cooling water outlet of the cooling circuit (7) are both arranged on the outer wall of the bearing seat (11).

8. The clamping device for gear honing according to claim 1, characterized in that: A second end cover (6b) located at one end of the clamping portion (21) of the clamping shaft (2) is sealedly connected to the frame (1).

9. The clamping device for gear honing according to claim 8, characterized in that: An airtight channel (8) is provided on the connection surface between the frame (1) and the second end cover (6b); an outlet of the airtight channel (8) is spaced apart from an edge of the connection surface between the frame (1) and the second end cover (6b); an inlet of the airtight channel (8) is located on the frame (1); and an air blowing device is connected to the inlet of the airtight channel (8).

10. The clamping device for gear honing according to claim 9, characterized in that: Along the axial direction of the clamping shaft (2), a Z-shaped connecting end surface (9) is provided between the frame (1) and the second end cover (6b), and the outlet of the airtight passage (8) is located radially outside the Z-shaped connecting end surface (9) along the clamping shaft (2).

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