High-precision adjustable reamer

Abstract

The high-precision adjustable reamer comprises a differential nut and a conical screw installed in the differential nut, the circular outer wall of the differential nut is sleeved with a differential threaded sleeve, and a plurality of blades are fixedly connected to the circular outer wall of the differential threaded sleeve at equal intervals. Lightening holes b penetrating left and right are formed in the blade, lightening holes a with rightward openings are formed in the differential threaded sleeve, and by forming the lightening holes a and the lightening holes b, when the reamer conducts punching work, the overall weight of the reamer can be reduced, the reamer is lighter, the heat dissipation area of the surface of the reamer is increased, the heat dissipation performance is improved, and the service life of the reamer is prolonged. Heat accumulation in the machining process is reduced, the service life of a tool is prolonged, vibration of the reamer in the working process can be reduced, the machining stability and precision are improved, by forming the lightening holes a and the lightening holes b, mass distribution of materials is more uniform, the influence of unbalanced mass on vibration is reduced, and vibration is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field related to reamer, and in particular relates to a high-precision adjustable reamer. Background Art

[0002] With an adjustable design, it can be precisely adjusted according to the processing requirements to meet the processing needs of workpieces of different sizes and shapes. This type of reamer usually has high-precision processing capabilities and can achieve precise hole diameter and surface finish requirements, but during the processing process, the propped-up reamer will shake and move during operation, resulting in reduced processing accuracy, and vibration and noise during processing, which will affect the service life of the reamer itself. Utility Model Content

[0003] The utility model aims to provide a high-precision adjustable reamer to solve the problem of shaking and displacement of the reamer after being propped up during processing in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision adjustable reamer, comprising a differential nut and a tapered screw installed inside the differential nut;

[0005] The circular outer wall of the differential nut is sleeved with a differential thread sleeve;

[0006] A plurality of blades are fixedly connected to the circular outer wall of the differential thread sleeve at equal intervals;

[0007] A weight-reducing hole b which passes through from left to right is provided inside the blade, and a weight-reducing hole a which opens to the right is provided inside the differential thread sleeve.

[0008] Preferably, baffles are fixedly connected on the rightmost side between the upper and lower inner walls of the weight-reducing hole a and on the left and right sides of the upper and lower inner walls of the weight-reducing hole b to prevent iron filings from entering the weight-reducing hole a and the weight-reducing hole b, and a plurality of vertical reinforcing ribs are fixedly connected equidistantly between the upper and lower inner walls of the weight-reducing hole b.

[0009] Preferably, a plurality of transverse reinforcing ribs are fixedly connected between the plurality of vertical reinforcing ribs, and the plurality of vertical reinforcing ribs and the transverse reinforcing ribs are fixedly connected to the baffle by welding.

[0010] Preferably, the weight-reducing hole a can be opened to different depths according to requirements, and the baffle is fixedly connected to the weight-reducing hole a and the weight-reducing hole b by seamless welding.

[0011] Preferably, a threaded hole is provided inside the differential nut to fit a tapered screw, and an engaging groove opening forward is provided inside the front end outer wall of the differential threaded sleeve.

[0012] Preferably, a connecting end is fixedly connected to the outer wall of the right end of the differential threaded sleeve, and a driving end is sleeved on the outer wall of the right end of the connecting end.

[0013] Compared with the prior art, the utility model provides a high-precision adjustable reamer, which has the following beneficial effects:

[0014] By opening multiple weight-reducing holes a and weight-reducing holes b, the overall weight of the reamer can be reduced when the reamer is drilling, making it lighter and easier to operate, and increasing the heat dissipation area on the reamer surface, which helps to improve the heat dissipation performance, reduce heat accumulation during processing, and extend the life of the tool. It can reduce the vibration of the reamer during operation and improve the stability and accuracy of processing. By opening weight-reducing holes a and weight-reducing holes b, the mass distribution of the material is made more uniform, the influence of unbalanced mass on vibration is reduced, and the generation of vibration is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the structure of a high-precision adjustable reamer.

[0016] Figure 2 The utility model is a schematic diagram of a local structure of a high-precision adjustable reamer in a side view.

[0017] Figure 3 It is a schematic diagram of the partial structure of the differential nut area in a top view of the cross section of the utility model.

[0018] In the figure: 1. differential nut; 2. tapered screw; 3. fitting groove; 4. blade; 5. differential threaded sleeve; 6. threaded hole; 7. connecting end; 8. driving end; 9. lightening hole a; 10. baffle; 11. lightening hole b; 12. transverse reinforcement rib; 13. vertical reinforcement rib. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model provides Figure 1-3 A high-precision adjustable reamer shown includes a differential nut 1 and a conical screw 2 installed inside the differential nut 1;

[0021] The circular outer wall of the differential nut 1 is sleeved with a differential thread sleeve 5;

[0022] A plurality of blades 4 are fixedly connected to the circular outer wall of the differential thread sleeve 5 at equal intervals. The differential thread sleeve 5 is a blade body that rotates and squeezes the conical surface through the differential nut 1, causing the outer diameter of the differential nut 1 to expand. The outer diameter of the differential thread sleeve 5 expands along with the expansion of the differential nut 1. The differential nut 1 ensures that the conical screw 2 enters the cavity of the differential nut 1 with an accurate stroke, achieving the effect of rotating a certain angle to ensure the expansion of the diameter by 0.005 mm.

[0023] A weight-reducing hole b11 is provided inside the blade 4 and runs through it from left to right. A weight-reducing hole a9 opening to the right is provided inside the differential thread sleeve 5. When the differential thread sleeve 5 rotates, the weight-reducing holes a9 and b11 can be used to reduce the overall weight, thereby reducing the vibration of the reamer during operation and improving the stability and accuracy of processing.

[0024] like Figure 3 As shown, baffles 10 are fixedly connected on the rightmost side between the upper and lower inner walls of the weight-reducing hole a9 and on the left and right sides of the upper and lower inner walls of the weight-reducing hole b11 to prevent iron filings from entering the weight-reducing holes a9 and b11, and a plurality of vertical reinforcing ribs 13 are fixedly connected equidistantly between the upper and lower inner walls of the weight-reducing hole b11, and a plurality of transverse reinforcing ribs 12 are fixedly connected between the plurality of vertical reinforcing ribs 13, and the plurality of vertical reinforcing ribs 13 and the transverse reinforcing ribs 12 are fixedly connected to the baffles 10 by welding.

[0025] When the blade 4 is driven by the differential thread sleeve 5 to rotate and perform cutting processing, the openings of the lightening holes a9 and the lightening holes b11 can be blocked by the baffle 10 to prevent waste chips produced during cutting from entering the lightening holes a9 and the lightening holes b11 and increasing the burden during cleaning. At the same time, the stability of the blade 4 during rotation is increased by adding transverse reinforcement ribs 12 and vertical reinforcement ribs 13.

[0026] like Figure 3 As shown, the weight-reducing hole a9 can be opened to different depths according to requirements, and the baffle 10 is fixedly connected to the weight-reducing hole a9 and the weight-reducing hole b11 by seamless welding.

[0027] Weight-reducing holes a9 of different depths can be opened as needed to adapt to different usage requirements, and seamless welding can be used to avoid the occurrence of excessive weld peaks.

[0028] like Figure 1 and Figure 2 As shown, a threaded hole 6 is provided inside the differential nut 1 to fit the tapered screw 2, a forward-opening fitting groove 3 is provided inside the front end outer wall of the differential thread sleeve 5, a connecting end 7 is fixedly connected to the right end outer wall of the differential thread sleeve 5, and a driving end 8 is sleeved on the right end outer wall of the connecting end 7.

[0029] When the conical screw 2 is inserted into the differential nut 1, it can be embedded in the threaded hole 6 for fixation. When the blade 4 is installed, it is connected and fixed between the fitting groove 3 and the differential nut 1, and can be fixed on the driving end 8 through the connecting end 7.

[0030] The implementation principle of this embodiment is: when the reamer is in use, the tapered screw 2 is inserted into the differential nut 1. During the working process, the differential thread sleeve 5 is a tool body that rotates and squeezes the tapered surface through the differential nut 1, causing the outer diameter of the differential nut 1 to expand. The outer diameter of the differential thread sleeve 5 expands along with the expansion of the differential nut 1. The differential nut 1 ensures that the tapered screw 2 enters the cavity of the differential nut 1 with a precise stroke, achieving the effect of rotating a certain angle to ensure the expansion of the diameter by 0.005 mm.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-precision adjustable reamer, comprising a differential nut (1) and a conical screw (2) installed inside the differential nut (1); The circular outer wall of the differential nut (1) is sleeved with a differential thread sleeve (5); A plurality of blades (4) are fixedly connected at equal intervals on the circular outer wall of the differential thread sleeve (5); Features: The blade (4) is provided with a weight-reducing hole b (11) extending from left to right, and the differential thread sleeve (5) is provided with a weight-reducing hole a (9) opening to the right.

2. A high-precision adjustable reamer according to claim 1, characterized in that: Baffles (10) are fixedly connected on the rightmost side between the upper and lower inner walls of the weight-reducing hole a (9) and on the left and right sides of the upper and lower inner walls of the weight-reducing hole b (11) to prevent iron filings from entering the weight-reducing hole a (9) and the weight-reducing hole b (11), and a plurality of vertical reinforcing ribs (13) are fixedly connected at equal distances between the upper and lower inner walls of the weight-reducing hole b (11).

3. A high-precision adjustable reamer according to claim 2, characterized in that: A plurality of transverse reinforcing ribs (12) are fixedly connected between the plurality of vertical reinforcing ribs (13), and the plurality of vertical reinforcing ribs (13) and the transverse reinforcing ribs (12) are fixedly connected to the baffle (10) by welding.

4. A high-precision adjustable reamer according to claim 3, characterized in that: The weight-reducing hole a (9) can be opened to different depths according to requirements, and the baffle (10) is fixedly connected to the weight-reducing hole a (9) and the weight-reducing hole b (11) by seamless welding.

5. The high-precision adjustable reamer according to claim 1, characterized in that: The differential nut (1) is provided with a threaded hole (6) inside to fit the conical screw (2), and the front end outer wall of the differential thread sleeve (5) is provided with a fitting groove (3) opening forward.

6. A high-precision adjustable reamer according to claim 1, characterized in that: The right end outer wall of the differential threaded sleeve (5) is fixedly connected to a connecting end (7), and the right end outer wall of the connecting end (7) is sleeved with a driving end (8).

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