Eccentric sleeve processing technology and eccentric sleeve tooling used therein

Abstract

The invention discloses an eccentric sleeve processing technology and an eccentric sleeve tooling used therefor. The processing process steps are as follows: first design the tooling and the eccentric tapered sleeve used for processing the tooling, then process the tooling according to the designed size, when processing the core shaft, fix the eccentric tapered sleeve to one end of the core shaft, clamp the eccentric tapered sleeve to the center hole grinder, process the eccentric hole at one end of the core shaft, then turn around and process the eccentric hole at the other end of the core shaft, finally fix the core shaft in the eccentric sleeve, and grind the outer circle and step surface of the eccentric sleeve by the external cylindrical grinder. The eccentric sleeve tooling used in the process includes a core shaft, a tapered sleeve, a pressure cover and a pressure cover positioning piece. The tapered sleeve is arranged on the outside of the conical section at both ends of the core shaft and can be tightly clamped between the conical section of the core shaft and the inner side wall of the eccentric sleeve to be processed. The pressure cover is tightly pressed against the tapered sleeve and the end surface of the eccentric sleeve through the pressure cover positioning piece. The invention ensures that the eccentric sleeve rotates with its own center line during processing, which is beneficial to improving its processing accuracy.

Description

Technical Field

[0001] The invention relates to a mechanical processing technology, in particular to an eccentric sleeve processing technology and an eccentric sleeve tooling used therein. Background Art

[0002] The processing of eccentric sleeves is an extremely important part of the production of grinding machines. Its processing accuracy directly affects the grinding accuracy of the grinder. The structure of the eccentric sleeve determines that its processing is difficult. The traditional eccentric sleeve processing method is to install a mandrel in the eccentric sleeve, and then install the mandrel on the external cylindrical grinder to process the outer circle and step surface of the eccentric sleeve. During the processing, the eccentric sleeve rotates around the axis of the mandrel. Therefore, the eccentric sleeve rotates eccentrically during the processing, forming a large centrifugal force on the eccentric sleeve, and eccentric vibration is prone to occur. In this case, processing its outer circle and step surface is likely to cause large errors, and it is difficult to ensure the processing accuracy of the eccentric sleeve. Summary of the invention

[0003] In order to make up for the above shortcomings, the present invention provides an eccentric sleeve processing technology and an eccentric sleeve tooling used therein. The eccentric sleeve processed by the eccentric sleeve tooling has high precision.

[0004] The technical solution adopted by the present invention to solve the technical problem is: an eccentric sleeve processing technology, the specific steps are as follows:

[0005] Step 1: Tooling design:

[0006] (1) Design the mandrel according to the minimum inner diameter of the eccentric sleeve;

[0007] (2) A gland designed to achieve axial positioning of the mandrel and the eccentric sleeve;

[0008] (3) A tapered sleeve designed to achieve radial positioning of the core shaft and the eccentric sleeve;

[0009] (4) provided on two eccentric tapered sleeves (12) for mandrel processing;

[0010] Step 2: Tooling processing:

[0011] (1) Mandrel processing:

[0012] ① The mandrel is processed and formed according to the design dimensions, and a center hole is formed on the end faces at both ends of the mandrel, and external threads are formed on the circumferential surfaces at both ends of the mandrel;

[0013] ② Punch the eccentric holes on the end faces of both ends of the mandrel according to the designed dimensions;

[0014] ③ Process the eccentric tapered sleeve according to the design size, and place the corresponding eccentric tapered sleeve on the tapered surface at one end of the mandrel. Install a tightening piece at one end of the mandrel. The tightening piece presses against the end surface of the eccentric tapered sleeve to tightly fix the eccentric tapered sleeve and one end of the mandrel. At this time, ensure that the eccentric holes on the end surfaces of both ends of the mandrel are exactly located on the center line of the eccentric tapered sleeve;

[0015] ④ Clamp the eccentric cone set of the above-mentioned assembly onto the center hole grinder. The center hole grinder tailstock top presses the eccentric hole point at the other end of the mandrel. The center hole grinder processes the eccentric hole at one end of the mandrel.

[0016] ⑤ Remove the eccentric tapered sleeve from one end of the mandrel, and install another corresponding eccentric tapered sleeve on the other end of the mandrel;

[0017] ⑥ Clamp the eccentric cone set of the above-mentioned assembly onto the center hole grinder. The center hole grinder tailstock top presses the eccentric hole at one end of the mandrel, and the center hole grinder processes the eccentric hole at the other end of the mandrel.

[0018] (2) The gland is processed according to the designed dimensions;

[0019] (3) The cone sleeve is processed according to the designed size;

[0020] Step 3: Tooling assembly:

[0021] Insert the mandrel into the eccentric sleeve of the outer circle to be processed, insert the tapered sleeve between the two ends of the mandrel and the inner hole of the eccentric sleeve, put the gland on the outside of the two ends of the mandrel, and lock the gland nuts on the external threads at the two ends of the mandrel, and make the gland press against the end faces of the two ends of the eccentric sleeve and the end face of the tapered sleeve;

[0022] Step 4: Install the tooling on the cylindrical grinder using the eccentric holes at both ends of the mandrel as positioning, and grind the outer circle and step surface of the eccentric sleeve.

[0023] As a further improvement of the present invention, before step ④, the assembly is first mounted on an external cylindrical grinder using the eccentric holes at both ends of the mandrel as positioning, and the external circle of the eccentric tapered sleeve is ground.

[0024] As a further improvement of the present invention, the tightening member in step ③ includes a washer and a locking nut, the locking nut is threadedly connected to the external thread at one end of the core shaft, and the washer is clamped between the locking nut and the eccentric tapered sleeve.

[0025] An eccentric sleeve tooling comprises a core shaft, a tapered sleeve, a pressure cover and a pressure cover positioning piece, wherein the core shaft comprises an intermediate cylindrical section matching the minimum inner diameter of the eccentric sleeve, tapered sections with gradually shrinking diameters at both ends of the intermediate cylindrical section and connecting sections at both ends of the tapered section, the tapered sleeve is sleeved on the outside of the tapered sections at both ends of the core shaft and can be tightly clamped between the tapered sections of the core shaft and the inner side wall of the eccentric sleeve to be processed, the pressure cover is axially slidably sleeved on the outside of the connecting section at both ends of the core shaft, and the pressure cover is tightly against the end surfaces of the tapered sleeve and the eccentric sleeve, the pressure cover positioning piece is detachably fixedly installed on the connecting sections at both ends of the core shaft, and the pressure cover positioning piece can be tightly against the axial end surface of the pressure cover facing away from the tapered sleeve.

[0026] As a further improvement of the present invention, the diameter of the end with a larger diameter of the conical section of the core shaft is smaller than the diameter of the middle cylindrical section, and a first gasket and a second gasket are provided. The first gasket is clamped between the step surface between the middle cylindrical section and the conical section of the core shaft and the end surface of one end of the cone sleeve, and the second gasket is clamped between the end surface of the other end of the cone sleeve and the pressure cover.

[0027] As a further improvement of the present invention, a retaining ring and an elastic washer are provided, which are sequentially sleeved on the outside of the tapered sleeve, one end of the retaining ring is tightly against the step surface of the inner hole of the eccentric sleeve to be processed, the other end of the retaining ring is tightly against the end surface of one end of the elastic washer, and the other end of the elastic washer is tightly against the surface of the pressure cover.

[0028] As a further improvement of the present invention, the gland positioning member includes a gland nut, an external thread structure is formed on the connecting sections at both ends of the core shaft, the gland nut is threadedly connected to the external thread structure at both ends of the core shaft, and the gland nut is tightly against the gland.

[0029] As a further improvement of the present invention, a first adjusting bolt is provided, and the pressure cover nut is provided with at least two first adjusting threaded holes distributed outside the circumference of the central threaded hole. The first adjusting bolt is movably threaded in the first adjusting threaded hole, and the adjusting bolt is tightly against the pressure cover surface.

[0030] As a further improvement of the present invention, a T-shaped annular copper washer and a second adjusting bolt are provided, and the pressure cover is provided with at least two second adjusting threaded holes distributed on the outside of the circumference of the center hole, and the adjusting bolt is movably threaded with the second adjusting threaded hole, and the end with a smaller diameter of the T-shaped annular copper washer is inserted between the tapered sleeve and the inner hole of the eccentric sleeve to be processed, and the end with a larger diameter of the T-shaped annular copper washer is tightly clamped between the axial end face of the eccentric sleeve to be processed and the second adjusting bolt.

[0031] As a further improvement of the present invention, the gland is connected to the connecting sections at both ends of the core shaft via an axially extending key.

[0032] The beneficial technical effect of the present invention is as follows: the present invention designs a special eccentric sleeve tooling, and eccentric holes concentric with the eccentric sleeve are respectively processed at both ends of the core shaft of the eccentric sleeve tooling. When the eccentric sleeve is subjected to external cylindrical processing and step surface processing, the external cylindrical grinder is positioned with the eccentric hole of the core shaft. When the eccentric hole on the core shaft is processed, an eccentric tapered sleeve is designed to be positioned with the core shaft to realize the correction of the eccentric hole, ensure that the eccentric hole and the axis of the eccentric sleeve are in a straight line, ensure that the eccentric sleeve rotates with its own center line during processing, and is beneficial to improving its processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structural principle of the eccentric sleeve of the present invention;

[0034] Figure 2 This is a first structural principle diagram of the eccentric sleeve tooling installed in the eccentric sleeve;

[0035] Figure 3 This is a second structural principle diagram of the eccentric sleeve tooling installed in the eccentric sleeve;

[0036] Figure 4 This is a second structural principle diagram of the eccentric sleeve tooling installed in the eccentric sleeve;

[0037] Figure 5 This is the main view of the mandrel;

[0038] Figure 6 It is the left view of the mandrel;

[0039] Figure 7 It is a schematic diagram of the position of the eccentric cone sleeve center and the eccentric hole on the core shaft;

[0040] Figure 8 A three-dimensional diagram of an eccentric tapered sleeve assembled on a core shaft;

[0041] Fig. 9 This is the correction processing status diagram of the eccentric holes at both ends of the core shaft. DETAILED DESCRIPTION

[0042] Embodiment: A processing technology for an eccentric sleeve 15, the specific steps are as follows:

[0043] Step 1: Tooling design:

[0044] (1) Design the mandrel 1 according to the minimum inner diameter of the eccentric sleeve 15;

[0045] (2) a gland 3 designed to achieve axial positioning of the core shaft 1 and the eccentric sleeve 15;

[0046] (3) a tapered sleeve 2 designed to achieve radial positioning of the core shaft 1 and the eccentric sleeve 15;

[0047] (4) provided on two eccentric tapered sleeves 12 for machining the mandrel 1;

[0048] Step 2: Tooling processing:

[0049] (1) Mandrel 1 processing:

[0050] ① The mandrel 1 is processed and formed according to the design size, and a center hole is formed on the end faces at both ends of the mandrel 1, and external threads are formed on the circumferential surfaces at both ends of the mandrel 1;

[0051] ② According to the design dimensions, eccentric holes are punched on the end faces of both ends of the mandrel 1;

[0052] ③ Process the eccentric tapered sleeve 12 according to the design size, and set the corresponding eccentric tapered sleeve 12 on the tapered surface at one end of the core shaft 1, install a tightening piece at one end of the core shaft 1, and press the tightening piece against the end surface of the eccentric tapered sleeve 12 to tightly fix the eccentric tapered sleeve 12 and one end of the core shaft 1. At this time, ensure that the eccentric holes on the end surfaces of both ends of the core shaft 1 are exactly located on the center line of the eccentric tapered sleeve 12;

[0053] ④ Clamp the eccentric tapered sleeve 12 of the aforementioned assembly onto the center hole grinder, and the center hole grinder tailstock top presses the eccentric hole point at the other end of the mandrel 1, and the center hole grinder processes the eccentric hole at one end of the mandrel 1;

[0054] ⑤ Remove the eccentric tapered sleeve 12 from one end of the core shaft 1, and install another corresponding eccentric tapered sleeve 12 on the other end of the core shaft 1;

[0055] ⑥ Clamp the eccentric conical sleeve 12 of the aforementioned assembly onto the center hole grinder, the center hole grinder tailstock top presses the eccentric hole at one end of the mandrel 1, and the center hole grinder processes the eccentric hole at the other end of the mandrel 1;

[0056] (2) The gland 3 is processed according to the designed dimensions;

[0057] (3) The cone sleeve 2 is processed according to the designed dimensions;

[0058] Step 3: Tooling assembly:

[0059] Insert the mandrel 1 into the eccentric sleeve 15 of the outer circle to be processed, insert the tapered sleeve 2 between the two ends of the mandrel 1 and the inner hole of the eccentric sleeve 15, put the gland 3 on the outer sides of the two ends of the mandrel 1, and lock the gland nuts 8 on the external threads at the two ends of the mandrel 1, and make the gland 3 press against the end faces of the two ends of the eccentric sleeve 15 and the end faces of the tapered sleeve 2;

[0060] Step 4: The tooling is installed on the cylindrical grinder with the eccentric holes at both ends of the mandrel 1 positioned, and the outer circle and step surface of the eccentric sleeve 15 are ground.

[0061] In order to avoid errors caused by centrifugal force, the processing method of the eccentric sleeve 15 is improved to use a processing mandrel 1, a tapered sleeve 2, a washer 13 and other tooling for clamping, and the outer circle of the eccentric sleeve 15 is ground. In the process of processing the eccentric sleeve 15, the eccentric hole of the mandrel 1 needs to be supported for grinding, and in the process of processing the mandrel 1, the center hole of the mandrel 1 needs to be supported. Therefore, the distance between the center hole of the mandrel 1 and the eccentric hole will directly affect the processing accuracy of the eccentric sleeve 15.

[0062] During the manufacturing process of the mandrel 1, the eccentric hole of the mandrel 1 is positioned, aligned and bored by a V-block. Due to the machine tool accuracy and processing errors, the spacing error between the center hole and the eccentric hole is usually more than 0.05 mm. In the subsequent processing steps of the mandrel 1, the center hole of the mandrel 1 needs to be supported, which further causes the center hole to be out of round, thereby increasing the spacing error between the center hole and the eccentric hole of the mandrel 1.

[0063] In order to improve the processing accuracy of the eccentric sleeve 15, the spacing error between the center hole and the eccentric hole of the core shaft 1 must be controlled within a certain range. If the spacing error between the center hole and the eccentric hole of the core shaft 1 is d, the error generated during the actual processing of the eccentric sleeve 15 will reach more than 2d. Therefore, it is essential to improve the accuracy of the spacing between the center hole and the eccentric hole of the core shaft 1.

[0064] The eccentric hole on the core shaft 1 processed according to the design size of this patent is only dotted to form a small hole, and then assembled on one end of the core shaft 1 through the eccentric tapered sleeve 12, so that the axis of the eccentric tapered sleeve 12 is consistent with the axis of the eccentric hole on the core shaft 1, and then the eccentric hole on the core shaft 1 is corrected based on the eccentric tapered sleeve 12, thereby ensuring the accuracy of the distance between the eccentric holes at both ends of the core shaft 1 and the center hole. The eccentric sleeve 15 tooling is installed on the eccentric sleeve 15, and the eccentric hole on the core shaft 1 is used for positioning to process the outer circle, end face and step surface of the eccentric sleeve 15, thereby ensuring that the eccentric sleeve 15 rotates around its own axis, avoiding eccentricity when the eccentric sleeve 15 rotates, and greatly improving the processing accuracy of the eccentric sleeve 15.

[0065] Before step ④, the assembly is first mounted on the external cylindrical grinder with the eccentric holes at both ends of the mandrel 1 positioned, and the external circle of the eccentric tapered sleeve 12 is ground. By grinding the external circle of the eccentric tapered sleeve 12 against the eccentric hole of the mandrel 1, and then adjusting the roundness of the eccentric tapered sleeve 12, the angle error between the eccentric hole of the mandrel 1 and the center of the eccentric tapered sleeve 12 can be reduced, and the correction accuracy of the eccentric hole on the mandrel 1 can be improved.

[0066] In step ③, the jacking member includes a washer 13 and a locking nut 14, the locking nut 14 is threadedly connected to the external thread of one end of the core shaft 1, and the washer 13 is sandwiched between the locking nut 14 and the eccentric tapered sleeve 12. The structure of positioning the eccentric tapered sleeve 12 by the washer 13 and the locking nut 14 is simple and convenient to position, and other positioning structures may also be used.

[0067] An eccentric sleeve 15 tooling includes a core shaft 1, a tapered sleeve 2, a pressure cover 3 and a pressure cover positioning piece, wherein the core shaft 1 includes an intermediate cylindrical section matching the minimum inner diameter of the eccentric sleeve 15, tapered sections with gradually shrinking diameters at both ends of the intermediate cylindrical section, and connecting sections at both ends of the tapered section, the tapered sleeve 2 is sleeved on the outside of the tapered sections at both ends of the core shaft 1 and can be tightly clamped between the tapered sections of the core shaft 1 and the inner side wall of the eccentric sleeve 15 to be processed, the pressure cover 3 is axially slidably sleeved on the outside of the connecting section at both ends of the core shaft 1, and the pressure cover 3 is tightly against the end surfaces of the tapered sleeve 2 and the eccentric sleeve 15, the pressure cover positioning piece is detachably fixedly installed on the connecting sections at both ends of the core shaft 1, and the pressure cover positioning piece can be tightly against the axial end surface of the pressure cover 3 facing away from the tapered sleeve 2.

[0068] During assembly, the core shaft 1 is inserted into the eccentric sleeve 15, and the end faces of the eccentric sleeve 15 and the tapered sleeve 2 are pressed by the pressure cover 3. The tapered sleeve 2 cooperates with the conical section of the core shaft 1 to achieve expansion of the inner wall of the eccentric sleeve 15, thereby achieving radial and axial positioning of the eccentric sleeve 15, so that it forms a solid whole with the core shaft 1, and then the entire assembly is driven to rotate with the eccentric hole on the core shaft 1 as the center. The eccentric sleeve 15 is rotated with its own axis as the center, which greatly improves the processing accuracy of its outer circle, end face and step surface. The tooling has a simple structure, is easy to use and has precise positioning.

[0069] The diameter of the end with a larger diameter of the conical section of the mandrel 1 is smaller than the diameter of the middle cylindrical section, and a first gasket 4 and a second gasket 5 are provided. The first gasket 4 is sandwiched between the step surface between the middle cylindrical section and the conical section of the mandrel 1 and the end surface of one end of the cone sleeve 2, and the second gasket 5 is sandwiched between the end surface of the other end of the cone sleeve 2 and the gland 3. This prevents the gland 3 from not pressing the cone sleeve 2 tightly, resulting in insufficient radial clamping force of the eccentric sleeve 15, and also prevents the cone sleeve 2 from being inserted too tightly to damage the inner hole of the eccentric sleeve 15 and the mandrel 1.

[0070] A retaining ring 6 and an elastic washer 7 are also provided, which are sequentially sleeved on the outside of the tapered sleeve 2, one end of the retaining ring 6 is tightly pressed against the step surface of the inner hole of the eccentric sleeve 15 to be processed, the other end of the retaining ring 6 is tightly pressed against the end surface of one end of the elastic washer 7, and the other end of the elastic washer 7 is tightly pressed against the surface of the gland 3. The elastic expansion and contraction of the elastic washer 7 ensures that the gland 3 presses the retaining ring 6, thereby ensuring the axial positioning accuracy of the eccentric sleeve 15.

[0071] The gland positioning member includes a gland nut 8, and an external thread structure is formed on the connecting sections at both ends of the core shaft 1. The gland nut 8 is threadedly connected with the external thread structure at both ends of the core shaft 1, and the gland nut 8 is tightly against the gland 3. The gland nut 8 cooperates with the external thread structure to achieve positioning on the core shaft 1, and can ensure the tightness of the gland 3, with a simple structure and convenient positioning and adjustment.

[0072] A first adjusting bolt 9 is also provided, and the gland nut 8 is provided with at least two first adjusting threaded holes distributed outside the circumference of the central threaded hole, and the first adjusting bolt 9 is movably threaded in the first adjusting threaded hole, and the adjusting bolt is tightly pressed against the surface of the gland 3. The first adjusting bolt 9 can be used to adjust the clamping force of the gland 3, and the structure is simple, which ensures that the gland 3 is clamped.

[0073] A T-shaped annular copper washer 10 and a second adjusting bolt 11 are also provided. The gland 3 is provided with at least two second adjusting threaded holes distributed outside the circumference of the center hole. The adjusting bolt is movably threaded with the second adjusting threaded holes. The end of the T-shaped annular copper washer 10 with a small diameter is inserted between the cone sleeve 2 and the inner hole of the eccentric sleeve 15 to be processed. The end of the T-shaped annular copper washer 10 with a large diameter is tightly clamped between the axial end surface of the eccentric sleeve 15 to be processed and the second adjusting bolt 11. The second adjusting bolt 11 is used to tighten the T-shaped annular copper washer 10, thereby tightening the eccentric sleeve 15.

[0074] The gland 3 is connected to the connecting sections at both ends of the core shaft 1 via a key extending axially.

Claims

1. An eccentric sleeve processing technology, characterized in that: The specific steps are as follows: Step 1: Tooling design: (1) Design the mandrel according to the minimum inner diameter of the eccentric sleeve; (2) A gland designed to achieve axial positioning of the mandrel and the eccentric sleeve; (3) A tapered sleeve designed to achieve radial positioning of the core shaft and the eccentric sleeve; (4) provided on two eccentric tapered sleeves (12) for mandrel processing; Step 2: Tooling processing: (1) Mandrel processing: ① The mandrel is processed and formed according to the design dimensions, and a center hole is formed on the end faces at both ends of the mandrel, and external threads are formed on the circumferential surfaces at both ends of the mandrel; ② Punch the eccentric holes on the end faces of both ends of the mandrel according to the designed dimensions; ③ Process the eccentric tapered sleeve according to the design size, and place the corresponding eccentric tapered sleeve on the tapered surface at one end of the mandrel. Install a tightening piece at one end of the mandrel. The tightening piece presses against the end surface of the eccentric tapered sleeve to tightly fix the eccentric tapered sleeve and one end of the mandrel. At this time, ensure that the eccentric holes on the end surfaces of both ends of the mandrel are exactly located on the center line of the eccentric tapered sleeve; ④ Clamp the eccentric cone set of the above-mentioned assembly onto the center hole grinder. The center hole grinder tailstock top presses the eccentric hole point at the other end of the mandrel. The center hole grinder processes the eccentric hole at one end of the mandrel. ⑤ Remove the eccentric tapered sleeve from one end of the mandrel, and install another corresponding eccentric tapered sleeve on the other end of the mandrel; ⑥ Clamp the eccentric cone set of the above-mentioned assembly onto the center hole grinder. The center hole grinder tailstock top presses the eccentric hole at one end of the mandrel, and the center hole grinder processes the eccentric hole at the other end of the mandrel. (2) The gland is processed according to the designed dimensions; (3) The cone sleeve is processed according to the designed size; Step 3: Tooling assembly: Insert the mandrel into the eccentric sleeve of the outer circle to be processed, insert the tapered sleeve between the two ends of the mandrel and the inner hole of the eccentric sleeve, put the gland on the outside of the two ends of the mandrel, and lock the gland nuts on the external threads at the two ends of the mandrel, and make the gland press against the end faces of the two ends of the eccentric sleeve and the end face of the tapered sleeve; Step 4: Install the tooling on the cylindrical grinder using the eccentric holes at both ends of the mandrel as positioning, and grind the outer circle and step surface of the eccentric sleeve.

2. The eccentric sleeve processing technology according to claim 1 is characterized in that: Before step ④, the assembly is mounted on the cylindrical grinder using the eccentric holes at both ends of the mandrel to position the assembly and grind the outer circle of the eccentric tapered sleeve.

3. The eccentric sleeve processing technology according to claim 1 is characterized in that: In step ③, the tightening member comprises a washer (13) and a locking nut (14), the locking nut is threadedly connected to the external thread at one end of the core shaft, and the washer is clamped between the locking nut and the eccentric tapered sleeve.

4. The eccentric sleeve processing technology according to claim 1 is characterized in that: The tooling comprises a core shaft (1), a tapered sleeve (2), a gland (3) and a gland positioning piece, wherein the core shaft comprises an intermediate cylindrical section matching the minimum inner diameter of the eccentric sleeve (15), tapered sections with gradually shrinking diameters at both ends of the intermediate cylindrical section and connecting sections at both ends of the tapered section, the tapered sleeves being sleeved on the outside of the tapered sections at both ends of the core shaft and being capable of being tightly clamped between the tapered sections of the core shaft and the inner side wall of the eccentric sleeve to be processed, the gland being axially slidably sleeved on the outside of the connecting section at both ends of the core shaft, and the gland being tightly pressed against the end surfaces of the tapered sleeve and the eccentric sleeve, the gland positioning piece being detachably fixedly mounted on the connecting section at both ends of the core shaft, and the gland positioning piece being capable of being tightly pressed against the axial end surface of the gland facing away from the tapered sleeve.

5. The eccentric sleeve processing technology according to claim 4 is characterized in that: The diameter of the end of the cone section of the core shaft with a larger diameter is smaller than the diameter of the middle cylindrical section, and a first gasket (4) and a second gasket (5) are also provided. The first gasket is clamped between the step surface between the middle cylindrical section and the cone section of the core shaft and the end surface of one end of the cone sleeve, and the second gasket is clamped between the end surface of the other end of the cone sleeve and the pressure cover.

6. The eccentric sleeve processing technology according to claim 4 is characterized in that: A retaining ring (6) and an elastic washer (7) are also provided. The retaining ring and the elastic washer are sequentially sleeved on the outside of the conical sleeve. One end of the retaining ring is tightly against the step surface of the inner hole of the eccentric sleeve to be processed, and the other end of the retaining ring is tightly against the end surface of one end of the elastic washer. The other end of the elastic washer is tightly against the surface of the pressure cover.

7. The eccentric sleeve processing technology according to claim 4 is characterized in that: The gland positioning member comprises a gland nut (8), an external thread structure is formed on the connecting sections at both ends of the core shaft, the gland nut is threadedly connected to the external thread structure at both ends of the core shaft, and the gland nut is tightly against the gland.

8. The eccentric sleeve processing technology according to claim 7 is characterized in that: A first adjusting bolt (9) is also provided. The gland nut is provided with at least two first adjusting threaded holes distributed outside the circumference of the central threaded hole. The first adjusting bolt is movably threadedly connected with the first adjusting threaded hole and is tightly pressed against the surface of the gland.

9. The eccentric sleeve processing technology according to claim 7 is characterized in that: A T-shaped annular copper washer (10) and a second adjusting bolt (11) are also provided. The pressure cover is provided with at least two second adjusting threaded holes distributed outside the circumference of the center hole. The second adjusting bolt is movably screwed into the second adjusting threaded hole. The end of the T-shaped annular copper washer with a smaller diameter is inserted between the tapered sleeve and the inner hole of the eccentric sleeve to be processed, and the end of the T-shaped annular copper washer with a larger diameter is tightly clamped between the axial end face of the eccentric sleeve to be processed and the second adjusting bolt.

10. The eccentric sleeve processing technology according to claim 7 is characterized in that: The gland is connected to the connecting sections at both ends of the core shaft via an axially extending key.

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