Honing tool structure and part inner hole honing machining method

Abstract

The honing tool structure comprises a clamping sleeve and a fixing rod, the clamping sleeve is provided with a through hole allowing a to-be-machined part to penetrate through, the through hole is in clearance fit with the outer wall of the to-be-machined part, a threaded hole is formed in the peripheral face of the clamping sleeve and communicates with the through hole, one end of the fixing rod is provided with an external thread, and the external thread is connected with the threaded hole in a matched mode. And after connection, the end of the external thread abuts against and is fixed to the to-be-machined part, after fixation, an operator can conveniently sleeve the inner hole of the to-be-machined part on the honing head by holding the fixing rod with a hand to conduct honing machining, operation is convenient, and meanwhile the safety risks such as falling of the part are greatly reduced. The invention further discloses a machining method for honing the inner hole of the part through the honing tool.

Description

Technical Field

[0001] The invention relates to the technical field of honing tooling, and in particular to a honing tooling structure and a method for honing inner holes of parts. Background Art

[0002] Honing is an efficient processing method that can achieve high precision, high surface quality and long life on the surface of workpieces. It can effectively improve dimensional accuracy, shape accuracy and reduce Ra value. For example, the pitch controller is installed on the engine reducer casing. It is the lubricating oil distribution mechanism of the propeller system, which realizes the propeller pitch change, air small pitch limit and blade angle feedback functions. Among them, the important parts to realize the above functions are high-precision sleeve parts, which need to achieve straightness within 0.005 and smoothness above Ra0.2. However, the local cutting marks caused by slow wire cutting cannot be removed. Therefore, honing is used. Honing can well control the inner hole size, cylindricity and roughness of the parts. However, for such parts with high precision requirements, manual honing is required during the honing process. The honing head is fixed on the equipment, and the operator needs to manually hold the parts for honing. Manually holding the parts is not only inconvenient to operate, but also has safety risks such as part falling off. Therefore, it is necessary to design a honing tooling structure and a part inner hole honing processing method to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a honing tool structure and a method for honing the inner hole of a part to solve the problems existing in the above-mentioned prior art, facilitate operators to hold the parts for honing, and reduce safety hazards.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a honing tool structure: comprising a clamping sleeve and a fixing rod;

[0006] The clamping sleeve is provided with a through hole for the workpiece to be processed to pass through, and the through hole is in clearance with the outer wall of the workpiece to be processed; the outer peripheral surface of the clamping sleeve is provided with a threaded hole, and the threaded hole is connected with the through hole;

[0007] One end of the fixing rod is provided with an external thread, and the external thread is matched and connected with the threaded hole. After the connection, the end of the external thread is abutted and fixed with the part to be processed.

[0008] Furthermore, the gap between the through hole and the outer wall of the part to be processed is 0.005-0.01 mm.

[0009] Furthermore, the outer walls of the clamping sleeve and the fixing rod are also provided with knurled patterns.

[0010] Furthermore, an external thread boss is provided at one end of the external thread close to the part to be processed, and the diameter of the external thread boss is smaller than the outer diameter of the external thread.

[0011] Furthermore, a conical head is provided at one end of the external threaded boss close to the part to be processed, the diameter of the conical head close to one end of the external threaded boss is equal to the outer diameter of the external threaded boss, and the diameter of the other end of the conical head is smaller than the outer diameter of the external threaded boss.

[0012] Furthermore, a columnar boss is provided at one end of the conical head close to the workpiece to be processed, and the diameter of the columnar boss is the same as the diameter of the end of the conical head close to the columnar boss.

[0013] Furthermore, two of the threaded holes and two of the fixing rods are provided, and are arranged one to one; the axes of the two threaded holes and the axis of the through hole intersect perpendicularly at the same point, and the angle between the axes of the two threaded holes is 120° to 180°.

[0014] Furthermore, a notch communicating with the through hole is also provided on the outer wall of the clamping sleeve.

[0015] Furthermore, the clamping sleeve is an aluminum sleeve.

[0016] The present invention also provides a method for honing the inner hole of a part, which is specifically:

[0017] S1, placing the workpiece to be processed into the through hole of the clamping sleeve;

[0018] S2, screwing the external thread of the fixing rod into the threaded hole of the clamping sleeve, and abutting and fixing it with the part to be processed;

[0019] S3, the operator holds the fixing rod and puts the inner hole of the part to be processed on the honing head for honing.

[0020] Compared with the prior art, the present invention has achieved the following technical effects:

[0021] A honing tool structure disclosed in the present invention adopts a clamping sleeve, and a through hole that is clearance-matched with a part to be processed and a threaded hole are provided on the clamping sleeve. The external thread of a fixing rod is screwed into the threaded hole of the clamping sleeve and abutted and fixed with the part to be processed. This is convenient for an operator to hold the fixing rod and put the inner hole of the part to be processed on the honing head for honing processing. This facilitates operation and greatly reduces safety risks such as part falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a cross-sectional schematic diagram of a clamping sleeve in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of a fixing rod in an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of a clamping sleeve with a notch in an embodiment of the present invention;

[0026] Among them, 1. clamping sleeve; 2. threaded hole; 3. through hole; 4. fixing rod; 5. external thread; 6. external thread boss; 7. conical head; 8. columnar boss; 9. notch. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The purpose of the present invention is to provide a honing tool structure and a method for honing the inner hole of a part, so as to solve the problems existing in the prior art, facilitate operators to hold the parts for honing, and reduce safety hazards.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 to Figure 3 As shown, the present invention provides a honing tool structure: comprising a clamping sleeve 1 and a fixing rod 4; wherein the clamping sleeve 1 is provided with a through hole 3 for the part to be processed to pass through, and the through hole 3 is in clearance with the outer wall of the part to be processed; the outer peripheral surface of the clamping sleeve 1 is provided with a threaded hole 2, and the threaded hole 2 is connected with the through hole 3; one end of the fixing rod 4 is provided with an external thread 5, and the external thread 5 is matched and connected with the threaded hole 2, and after the connection, the end of the external thread 5 is abutted and fixed with the part to be processed;

[0031] By providing a clamping sleeve 1, and providing a through hole 3 on the clamping sleeve 1 that is clearance-matched with the part to be processed, and providing a threaded hole 2, the external thread 5 of the fixing rod 4 is screwed into the threaded hole 2 of the clamping sleeve 1 and abutted and fixed with the part to be processed, it is convenient for an operator to hold the fixing rod 4 and put the inner hole of the part to be processed on the honing head for honing, which facilitates operation and greatly reduces safety risks such as part falling off.

[0032] As an implementable example, the gap between the through hole 3 and the outer wall of the part to be processed is set to 0.005-0.01 mm, which effectively improves the coaxiality between the inner hole of the part to be processed and the through hole 3, thereby improving the processing accuracy.

[0033] As an implementable example, knurling patterns are provided on the outer walls of the clamping sleeve 1 and the fixing rod 4. The knurling patterns increase the friction force during operation by the operator, facilitate picking up, prevent falling off, and improve the safety factor.

[0034] As an example of what can be done, Figure 2 As shown, an external thread boss 6 is provided at one end of the external thread 5 close to the part to be processed, and the diameter of the external thread boss 6 is smaller than the outer diameter of the external thread 5. By providing the external thread boss 6 with a smaller diameter, it is convenient for the operator to quickly move and insert the fixing rod 4 into the threaded hole 2. At the same time, there is no thread on the external thread boss 6, which can reduce the time for screwing in the fixing rod 4, so as to quickly abut and fix the end of the fixing rod 4 with the part to be processed, thereby improving the use efficiency.

[0035] As an example of what can be done, Figure 2 As shown, a conical head 7 is also provided at one end of the externally threaded boss 6 close to the part to be processed, and the diameter of the conical head 7 close to the end of the externally threaded boss 6 is equal to the outer diameter of the externally threaded boss 6, and the diameter of the other end of the conical head 7 is smaller than the outer diameter of the externally threaded boss 6. By providing the conical head 7, when there is a hole on the outer wall of the part to be processed, it is convenient to insert the end of the conical head 7 with a smaller diameter into the hole on the outer wall of the part to be processed for fixed positioning, thereby further increasing the stability of fixing the part to be processed, and the conical structure has high compatibility with the size of the hole on the outer wall of the part to be processed; at the same time, a columnar boss 8 can also be provided at one end of the conical head 7 close to the part to be processed, and the diameter of the columnar boss 8 is the same as the diameter of the end of the conical head 7 close to the columnar boss 8. The columnar boss 8 with a smaller diameter can be inserted into the hole on the outer wall of the part to be processed more quickly for fixation, thereby improving the processing efficiency.

[0036] As an implementable example, two threaded holes 2 and two fixing rods 4 are each provided, and are arranged one to one; the axes of the two threaded holes 2 intersect the axis of the through hole 3 perpendicularly at the same point, and the angle between the axes of the two threaded holes 2 is 120° to 180°, which makes it convenient for the operator to hold with both hands, greatly increasing the stability during honing.

[0037] As an example of what can be done, Figure 3 As shown, a notch 9 connected to the through hole 3 is provided on the outer wall of the clamping sleeve 1, so that the contact area between the cooling medium and the part is increased during honing, so that the part is cooled quickly and the high temperature is prevented from causing harm to the operator; wherein the notch 9 includes at least one pair, and any pair of notches 9 are collinear in the axial direction of the through hole 3 and are both U-shaped, and the openings thereof are respectively located at both ends of the clamping sleeve 1, which increases the cooling area while facilitating the coolant to enter the two notches 9 from the same axis for cooling.

[0038] As an implementable example, the clamping sleeve 1 can be cylindrical and made of aluminum. Aluminum is a relatively soft material, which can effectively prevent damage to parts.

[0039] The present invention also provides a method for honing the inner hole of a part, which is specifically:

[0040] S1, placing the workpiece to be processed into the through hole 3 of the clamping sleeve 1;

[0041] S2, screw the external thread 5 of the fixing rod 4 into the threaded hole 2 of the clamping sleeve 1, and fix it against the part to be processed;

[0042] S3, the operator holds the fixing rod 4 and puts the inner hole of the part to be processed on the honing head for honing.

[0043] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A honing tool structure, characterized in that: It comprises a clamping sleeve (1) and a fixing rod (4); The clamping sleeve (1) is provided with a through hole (3) for the part to be processed to pass through, and the through hole (3) is clearance-matched with the outer wall of the part to be processed; the outer peripheral surface of the clamping sleeve (1) is provided with a threaded hole (2), and the threaded hole (2) is connected to the through hole (3); One end of the fixing rod (4) is provided with an external thread (5), and the external thread (5) is matched and connected with the threaded hole (2), and after the connection, the end of the external thread (5) is abutted and fixed with the part to be processed.

2. The honing tool structure according to claim 1, characterized in that: The size of the gap between the through hole (3) and the outer wall of the part to be processed is 0.005-0.01 mm.

3. The honing tool structure according to claim 1, characterized in that: The outer walls of the clamping sleeve (1) and the fixing rod (4) are also provided with knurled patterns.

4. The honing tool structure according to claim 1, characterized in that: An external thread boss (6) is also provided at one end of the external thread (5) close to the part to be processed, and the diameter of the external thread boss (6) is smaller than the outer diameter of the external thread (5).

5. The honing tool structure according to claim 4, characterized in that: A conical head (7) is also provided at one end of the external thread boss (6) close to the part to be processed, the diameter of the conical head (7) close to the end of the external thread boss (6) is equal to the outer diameter of the external thread boss (6), and the diameter of the other end of the conical head (7) is smaller than the outer diameter of the external thread boss (6).

6. The honing tool structure according to claim 5, characterized in that: A columnar boss (8) is also provided at one end of the conical head (7) close to the part to be processed, and the diameter of the columnar boss (8) is the same as the diameter of the end of the conical head (7) close to the columnar boss (8).

7. The honing tool structure according to any one of claims 1 to 6, characterized in that: The threaded holes (2) and the fixing rods (4) are each provided with two and are arranged one to one; the axes of the two threaded holes (2) and the axis of the through hole (3) intersect perpendicularly at the same point, and the angle between the axes of the two threaded holes (2) is 120° to 180°.

8. The honing tool structure according to any one of claims 1 to 6, characterized in that: The outer wall of the clamping sleeve (1) is also provided with a notch (9) which is in communication with the through hole (3).

9. The honing tool structure according to any one of claims 1 to 6, characterized in that: The clamping sleeve (1) is an aluminum sleeve.

10. A method for honing the inner hole of a part, characterized in that: The honing tool structure according to any one of claims 1 to 9 is used to clamp the part to be processed, and the part inner hole honing processing method comprises: S1, placing the part to be processed into the through hole (3) of the clamping sleeve (1); S2, screwing the external thread (5) of the fixing rod (4) into the threaded hole (2) of the clamping sleeve (1), and abutting and fixing it against the part to be processed; S3, the operator holds the fixing rod (4) and puts the inner hole of the part to be processed on the honing head for honing.

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