Core rod clamp for grinding shaft sleeve product

Abstract

The utility model discloses a core rod clamp for grinding a shaft sleeve product, which relates to the technical field of grinding, and comprises an expansion sleeve coaxially sleeved between a core rod and a shaft sleeve, the inner wall of the expansion sleeve is arranged to be an inner reducing surface, and an outer reducing surface matched with the inner reducing surface is arranged on the periphery of the core rod opposite to the expansion sleeve; the inner variable-diameter face is attached to the outer variable-diameter face, and the expansion sleeve can move relative to the core rod and the shaft sleeve in the axial direction and is fixedly supported between the core rod and the shaft sleeve. According to the core rod clamp for grinding the shaft sleeve product, the machining efficiency and the machining quality of the shaft sleeve product are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of grinding processing technology, in particular to a core rod clamp for grinding processing shaft sleeve products. BACKGROUND

[0002] Shaft sleeve products are generally high in coaxiality and concentricity requirements, and the existing silicon carbide shaft sleeve product processing technology needs to process the inner hole first and then the outer circle, the core rod clamp is an important auxiliary tool for grinding the outer circle, and the existing core rod clamp is usually fixed in size, the inner hole processing size of different shaft sleeve products may not be uniform, and there may be deviations in coaxiality and concentricity during cooperation with the core rod clamp, resulting in low processing efficiency and substandard quality of the shaft sleeve products. SUMMARY

[0003] The utility model discloses a core rod clamp for grinding processing shaft sleeve products, which solves the problems of the prior art and improves the processing efficiency and quality of the shaft sleeve products.

[0004] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0005] The utility model provides a core rod clamp for grinding processing shaft sleeve products, which comprises an expansion sleeve arranged coaxially between a core rod and a shaft sleeve, the inner wall of the expansion sleeve is provided with an inner variable diameter surface, and the outer periphery of the core rod opposite to the expansion sleeve is provided with an outer variable diameter surface matched with the inner variable diameter surface; the inner variable diameter surface and the outer variable diameter surface are in close contact, and the expansion sleeve can move axially relative to the core rod and the shaft sleeve and be fixedly supported between the core rod and the shaft sleeve.

[0006] Preferably, a first gland is further included, which is fixedly arranged on one side of the expansion sleeve along the axial direction of the expansion sleeve.

[0007] Preferably, a first fixing member is further included, which is arranged on the side of the first gland away from the expansion sleeve, the first fixing member is fixedly arranged outside the core rod, and the first fixing member can move axially relative to the core rod to drive the expansion sleeve to move relative to the core rod and the shaft sleeve and be fixedly supported between the core rod and the shaft sleeve through the first gland.

[0008] Preferably, the first gland is slidingly arranged outside the core rod, and the first fixing member is threadedly arranged outside the core rod.

[0009] Preferably, a second gland is further included, a limiting ring is fixedly arranged on the outer periphery of the core rod, the second gland is fixedly arranged on one side of the shaft sleeve along the axial direction of the shaft sleeve, and the other side of the shaft sleeve can abut against the limiting ring.

[0010] Preferably, a second fixing member is further included, which is arranged on the side of the second gland away from the shaft sleeve, the second fixing member is fixedly sleeved outside the mandrel, and the second fixing member is axially movable relative to the mandrel, so that the second gland can be pressed on one side of the shaft sleeve.

[0011] Preferably, the second gland is slidably sleeved outside the mandrel, and the second fixing member is threadedly sleeved outside the mandrel.

[0012] Preferably, the first gland and the second gland are arranged on the same side of the expansion sleeve, and the first gland and the first fixing member are arranged inside the second gland.

[0013] Preferably, the expansion sleeve is provided with a plurality of open grooves in the circumferential direction.

[0014] Preferably, the inner variable diameter surface and the outer variable diameter surface are both arranged as conical surfaces.

[0015] The utility model discloses the following technical effects are obtained relative to prior art:

[0016] The mandrel clamp for grinding shaft sleeve products provided by the utility model sets the expansion sleeve between the mandrel and the shaft sleeve, can compensate the gap between the mandrel and the shaft sleeve, makes the mandrel and the shaft sleeve keep coaxial and concentric, and due to the cooperation between the inner variable diameter surface of the expansion sleeve and the outer variable diameter surface of the mandrel, the cooperation of variable diameter makes the expansion sleeve axially movable relative to the mandrel under external force and can be expanded between the mandrel and the shaft sleeve, thereby can adapt to the coaxial and concentric cooperation of the shaft sleeve and the mandrel of different inner hole sizes, and further improve the processing efficiency and processing quality of the shaft sleeve products, and the cost of the mandrel clamp as a whole is lower. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows, and obviously, the drawings in the following description can only be some embodiments of the utility model, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0018] Figure 1 It is a front view of the mandrel clamp for grinding shaft sleeve products provided in embodiment one.

[0019] Figure 2 It is a front view of the mandrel clamp for grinding shaft sleeve products provided in embodiment one. Figure 1 It is a sectional view of A-A.

[0020] Figure 3 It is a structural schematic view of the expansion sleeve provided in embodiment one.

[0021] In the figure: 1 - core rod; 11 - limit ring; 12 - outer variable diameter surface; 2 - shaft sleeve; 3 - expansion sleeve; 31 - inner variable diameter surface; 32 - open slot; 4 - first gland; 5 - first fixing piece; 6 - second gland; 7 - second fixing piece. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] The utility model aims at providing a core rod clamp for grinding shaft sleeve products to solve the problems in the prior art and improve the machining efficiency and machining quality of shaft sleeve products.

[0024] In order to make the above-mentioned purposes, features and advantages of the utility model more apparent, easy to understand, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0025] Embodiment one

[0026] The embodiment provides a core rod clamp for grinding shaft sleeve products, please see Figures 1-3 , including the expansion sleeve 3 for being coaxial with the shaft sleeve between the core rod 1 and the shaft sleeve 2, the inner wall of the expansion sleeve 3 is provided as the inner variable diameter surface 31, and the opposite outer periphery of the core rod 1 and the expansion sleeve 3 is provided with the outer variable diameter surface 12 matched with the inner variable diameter surface 31;The inner variable diameter surface 31 and the outer variable diameter surface 12 are attached, and the expansion sleeve 3 can be moved along the axial direction relative to the core rod 1 and the shaft sleeve 2 and fixedly supported between the core rod 1 and the shaft sleeve 2.

[0027] The expansion sleeve 3 is arranged between the core rod 1 and the shaft sleeve 2, which can compensate for the gap between the core rod 1 and the shaft sleeve 2, so that the core rod 1 and the shaft sleeve 2 remain coaxial and concentric;Due to the cooperation between the inner variable diameter surface 31 of the expansion sleeve 3 and the outer variable diameter surface 12 of the core rod 1, the variable diameter cooperation enables the expansion sleeve 3 to move along the axial direction relative to the core rod 1 under the action of external force and be expanded between the core rod 1 and the shaft sleeve 2, so that the coaxial and concentric cooperation of the shaft sleeve 1 and the core rod with different inner hole sizes can be adapted, and the machining efficiency and machining quality of the shaft sleeve product are improved, and the overall cost of the core rod clamp is low.

[0028] In the optional solution of the embodiment, preferably, the core rod clamp for grinding the shaft sleeve product further comprises a first pressing cover 4, which is axially fixed and arranged on one side surface of the expansion sleeve 3. By arranging the first pressing cover 4 on one side surface of the expansion sleeve 3, the expansion sleeve 3 can be pressed and well maintained through the contact between surfaces.

[0029] The outer diameter of the first pressing cover 4 is slightly smaller than the outer diameter of the expansion sleeve 3, for example, 1 mm or 2 mm smaller, so as to avoid interference between the first pressing cover 4 and the shaft sleeve 2.

[0030] In the optional solution of the embodiment, preferably, the core rod clamp for grinding the shaft sleeve product further comprises a first fixing member 5, which is arranged on the side of the first pressing cover 4 away from the expansion sleeve 3. The first fixing member 5 is fixedly arranged on the outside of the core rod 1, and can move axially relative to the core rod 1, so as to drive the expansion sleeve 3 to move relative to the core rod 1 and the shaft sleeve 2 and be fixedly supported between the core rod 1 and the shaft sleeve 2 through the first pressing cover 4. By adjusting the relative position of the first fixing member 5 and the core rod 1, the first pressing cover 4 can be driven to press the expansion sleeve 3, and the position of the expansion sleeve 3 can be maintained through the first fixing member 5 and the core rod 1.

[0031] In the optional solution of the embodiment, preferably, the first pressing cover 4 is slidably arranged on the outside of the core rod 1, the first fixing member 5 is threadedly arranged on the outside of the core rod 1, the expansion sleeve 3 is directly embedded between the core rod 1 and the shaft sleeve 2, the first pressing cover 4 is arranged in the form of a circular ring, and the first fixing member 5 is arranged in the form of a fastening nut. In this way, by controlling the relative position of the first fixing member 5 and the core rod 1, the first pressing cover 4 can be driven to press the expansion sleeve 3. In addition, the first pressing cover 4 can also be threadedly connected with the core rod 1, so that the position of the expansion sleeve 3 can be adjusted and maintained by directly adjusting the first pressing cover 4.

[0032] In the optional solution of the embodiment, preferably, the core rod clamp for grinding the shaft sleeve product further comprises a second pressing cover 6, and a limiting ring 11 is fixedly arranged on the outside of the core rod 1. The second pressing cover 6 is axially fixed and arranged on one side surface of the shaft sleeve 2, and the other side surface of the shaft sleeve 2 can abut against the limiting ring 11. Through the cooperation of the second pressing cover 6 and the limiting ring 11, the position of the shaft sleeve 2 can be fixed.

[0033] In an optional solution of the embodiment, preferably, the core rod clamp for the ground shaft sleeve product further comprises a second fixing member 7, which is arranged on the side of the second gland 6 away from the shaft sleeve 2, is fixedly sleeved on the core rod 1, and can move axially relative to the core rod 1 to enable the second gland 6 to be pressed against one side of the shaft sleeve 2; the position of the second gland 6 is maintained by adjusting the relative position of the second fixing member 7 and the core rod 1 and by fixing the second fixing member 7 and the core rod 1, thereby fixing the position of the shaft sleeve 2.

[0034] In an optional solution of the embodiment, preferably, the second gland 6 is slidably sleeved on the core rod 1, and the second fixing member 7 is threadedly sleeved on the core rod 1; the second gland 6 is arranged in the form of a ring, and the second fixing member 7 is arranged in the form of a fastening nut; the position of the second gland 6 is fixed by adjusting the fixed position of the second fixing member 7 and the core rod 1; in addition, the second gland 6 can be directly threadedly connected with the core rod 1 to directly fix the position of the shaft sleeve 2.

[0035] In an optional solution of the embodiment, preferably, the first gland 4 and the second gland 6 are arranged on the same side of the expansion sleeve 3, i.e., both are arranged on the small-diameter side of the expansion sleeve 3; the first gland 4 is pressed against the small-diameter end of the expansion sleeve 3 to enable the expansion sleeve 3 to be stably expanded on the core rod 1; and the first gland 4 and the first fixing member 5 are arranged inside the second gland 6 to improve the overall appearance.

[0036] In an optional solution of the embodiment, preferably, referring to Figure 3 , the expansion sleeve 3 is provided with a plurality of open grooves 31 in the circumferential direction; the open grooves 32 meet the requirement of slight deformation of the expansion sleeve 3 when the expansion sleeve 3 moves axially along the core rod 1; the expansion sleeve 3 can be made of metal, which can be slightly deformed while maintaining the expansion stability.

[0037] In an optional solution of the embodiment, preferably, the inner variable-diameter surface 31 and the outer variable-diameter surface 12 are both arranged in the form of a conical surface; the expansion sleeve 3 can move axially along the core rod 1 and be expanded on the outer periphery of the core rod 1.

[0038] The principle and implementation mode of the specific examples are described in the utility model, and the above description of the embodiments is only used to help understand the method and core idea of the utility model; meanwhile, according to the idea of the utility model, the specific implementation mode and application range can be changed by the general technical personnel in the field. In conclusion, the content of the specification should not be understood as a limitation of the utility model.

Claims

1. A mandrel clamp for grinding bushing products, characterized in that: It includes an expansion sleeve (3) for coaxially sleeved between a mandrel (1) and a bushing (2). The inner wall of the expansion sleeve (3) is configured as an inner variable diameter surface (31), and the outer periphery of the mandrel (1) opposite to the expansion sleeve (3) is provided with an outer variable diameter surface (12) that matches the inner variable diameter surface (31). The inner variable diameter surface (31) fits against the outer variable diameter surface (12), and the expansion sleeve (3) can move axially relative to the mandrel (1) and the bushing (2) and be fixedly supported between the mandrel (1) and the bushing (2).

2. The mandrel fixture for grinding bushing products according to claim 1, characterized in that: It also includes a first pressure cap (4), which is fixedly pressed onto one side of the expansion sleeve (3) along the axial direction of the expansion sleeve (3).

3. The mandrel fixture for grinding bushing products according to claim 2, characterized in that: It also includes a first fixing member (5), which is disposed on the side of the first pressure cover (4) away from the expansion sleeve (3). The first fixing member (5) is fixedly sleeved outside the mandrel (1), and the first fixing member (5) can move axially relative to the mandrel (1) so as to drive the expansion sleeve (3) to move relative to the mandrel (1) and the bushing (2) through the first pressure cover (4) and fix it between the mandrel (1) and the bushing (2).

4. The mandrel fixture for grinding bushing products according to claim 3, characterized in that: The first pressure cap (4) is slidably sleeved on the outside of the core rod (1), and the first fixing member (5) is threadedly sleeved on the outside of the core rod (1).

5. The mandrel fixture for grinding bushing products according to claim 3, characterized in that: It also includes a second pressure cap (6), a limiting ring (11) is fixedly provided on the outer periphery of the core rod (1), the second pressure cap (6) is fixedly pressed on one side of the bushing (2) along the axial direction, and the other side of the bushing (2) can abut against the limiting ring (11).

6. The mandrel fixture for grinding bushing products according to claim 5, characterized in that: It also includes a second fixing member (7), which is disposed on the side of the second cover (6) away from the bushing (2). The second fixing member (7) is fixedly sleeved outside the mandrel (1), and the second fixing member (7) can move axially relative to the mandrel (1) so that the second cover (6) can be pressed against the side of the bushing (2).

7. The mandrel fixture for grinding bushing products according to claim 6, characterized in that: The second pressure cap (6) is slidably sleeved on the outside of the core rod (1), and the second fixing member (7) is threadedly sleeved on the outside of the core rod (1).

8. The mandrel fixture for grinding bushing products according to claim 5, characterized in that: The first pressure cap (4) and the second pressure cap (6) are placed on the same side of the expansion sleeve (3), and the first pressure cap (4) and the first fixing member (5) are disposed inside the second pressure cap (6).

9. The mandrel fixture for grinding bushing products according to claim 1, characterized in that: The expansion sleeve (3) is provided with multiple opening slots (32) along the circumferential direction.

10. The mandrel fixture for grinding bushing products according to claim 1, characterized in that: Both the inner diameter-changing surface (31) and the outer diameter-changing surface (12) are set as conical surfaces.

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