Floating chuck of cylindrical grinding machine

Abstract

The utility model relates to a cylindrical grinding machine floating chuck which comprises a chuck body (1) installed on a main shaft of a cylindrical grinding machine. The floating module (2) and the chuck body (1) are coaxially arranged, and the floating module (2) is connected with the chuck body (1); the positioning module (3) and a main shaft of the cylindrical grinding machine are coaxially arranged, and the positioning module (3) is matched with the floating module (2); the clamping module (4) is mounted on the outer end surface of the floating module (2) and is used for clamping a part after rotating; the clamping module (4) comprises evenly-distributed part clamping pieces (41), the side faces, close to each other, of the part clamping pieces (41) are arc-shaped curved surfaces, and concave-convex structures for increasing friction force are arranged on the arc-shaped curved surfaces. Compared with the prior art, the clamping range of grinding machine parts can be widened, efficient clamping and loosening are achieved, and stability during clamping is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cylindrical grinders, in particular to a floating chuck of a cylindrical grinder. Background Art

[0002] Cylindrical grinder is a kind of grinding machine equipment which processes the outer surface and shoulder end face of cylindrical, conical or other shaped parts, and is widely used in the field of parts processing.

[0003] Cylindrical grinders are usually equipped with part clamping devices, and usually need to use the clamping device to clamp and fix the parts. Cylindrical grinders in the prior art usually include a fixed seat fixed on the machine body, and clamp and release the parts by controlling the extension and contraction of ordinary fixed jaws.

[0004] However, traditional parts clamping has strong limitations, especially when processing a variety of products with different outer diameters, it is very time-consuming and requires constant adjustment, which greatly affects the working efficiency of the cylindrical grinder; and this type of fixed jaws requires manual tightening of screws when clamping parts (such as CN203579405U), further slowing down work efficiency. At the same time, manual adjustment is prone to over-tight contact with the parts and will affect the quality of the parts.

[0005] Therefore, the problem of how the clamping device of the cylindrical grinder can broaden the clamping range of the grinder parts and achieve efficient clamping and loosening remains to be solved. Utility Model Content

[0006] The utility model aims to provide a floating chuck for an external cylindrical grinder, so as to broaden the clamping range of the grinder parts and realize efficient clamping and loosening.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] A floating chuck for a cylindrical grinding machine, comprising:

[0009] The chuck body is installed on the spindle of the cylindrical grinder;

[0010] A floating module, coaxially arranged with the chuck body and connected to the chuck body;

[0011] A positioning module, which is coaxially arranged with the spindle of the cylindrical grinder and cooperates with the floating module;

[0012] The clamping module is installed on the outer end surface of the floating module and is used to clamp parts after rotation; the clamping module includes evenly distributed part clamping cards, and the side surfaces of the part clamping cards close to each other are all arc surfaces, and the arc surfaces are provided with concave and convex structures to increase friction.

[0013] Furthermore, the chuck body and the floating module are both annular structures, and the chuck body and the floating module hole axis are matched.

[0014] Furthermore, the positioning module is a Morse tip.

[0015] Furthermore, a cylindrical cavity is formed inside the spindle of the external cylindrical grinder, a top sleeve is installed in the cavity, the tail end of the Morse tip is connected to the top sleeve, and the tip of the Morse tip is matched with the floating module in Morse taper.

[0016] Furthermore, the center of the clamping module faces the top of the Morse pinnacle.

[0017] Furthermore, threaded holes are provided on the part clamping cards, and the part clamping cards are connected to the floating module via screws.

[0018] Furthermore, the threaded holes formed on the part clamping card are located on the same circumference, and the distances from the threaded holes to the center of the positioning module are equal.

[0019] Furthermore, the number of the part clamping cards is 3-5 to ensure the clamping of the parts.

[0020] Furthermore, a waist-shaped groove is provided on the part clamping card, and the part clamping card is connected to the chuck body through a pin shaft movably inserted in the waist-shaped groove.

[0021] Furthermore, the part clamping cards are all connected to pressure sensors for detecting and determining whether the part clamping cards are clamping the parts.

[0022] Furthermore, the chuck body is made of aluminum alloy, and the part clamping card is made of stainless steel.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] (1) The utility model provides a floating chuck with a floating module on the existing cylindrical grinding machine equipment, and evenly distributed clamping plates are provided on the floating module, which can realize the clamping and loosening of grinding machine parts of different sizes, greatly widening the clamping range of the grinding machine parts.

[0025] (2) The part clamping card of the utility model is arranged with an arc-shaped surface on one side close to the part, which expands the effective clamping range of the part clamping card and is not easy to damage the part, thereby ensuring the quality of the part; at the same time, the arc-shaped surface increases the texture of the concave-convex structure, which is also conducive to increasing the friction force and clamping stability during the clamping process.

[0026] (3) The present invention utilizes the existing Morse center of the cylindrical grinding machine as a positioning module, and no mechanical improvement is required. The center of the part clamped by the clamping module is also aligned with the tip of the Morse center. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the utility model.

[0028] Figure 2 It is a structural schematic diagram of the part clamping piece of the utility model.

[0029] Figure 3 It is a schematic diagram of the clamping and loosening states of the clamping module of the utility model.

[0030] Description of the markings in the figure:

[0031] 1-chuck body, 2-floating module, 3-positioning module, 4-clamping module, 41-part clamping plate, 411-threaded hole, 412-waist groove, 413-pin shaft. DETAILED DESCRIPTION

[0032] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0033] In the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] Embodiment 1:

[0036] A floating chuck for a cylindrical grinder includes a chuck body 1, a floating module 2, a positioning module 3 and a clamping module 4. The chuck body 1 is mounted on the main shaft of the cylindrical grinder, and the floating module 2 is coaxially arranged with the chuck body 1 and connected with the hole axis of the chuck body 1. The positioning module 3 is coaxially arranged with the main shaft of the cylindrical grinder and cooperates with the floating module 2. The clamping module 4 is mounted on the outer end face of the floating module 2 and is used to clamp parts after rotation. The clamping module 4 includes evenly distributed part clamping cards 41, and the side surfaces of the part clamping cards 41 that are close to each other are all arc-shaped surfaces, and the arc-shaped surfaces are provided with concave-convex structures that increase friction.

[0037] Embodiment 2:

[0038] A floating chuck for a cylindrical grinding machine, such as Figure 1 As shown, it includes a chuck body 1, a floating module 2, a positioning module 3 and a clamping module 4. The chuck body 1 is mounted on the spindle of the cylindrical grinder by screws. The floating module 2 and the chuck body 1 are both annular structures and are coaxially arranged. The chuck body 1 and the floating module 2 are connected by hole-shaft matching.

[0039] The positioning module 3 is a Morse tip, which is coaxially arranged with the external cylindrical grinder spindle and cooperates with the floating module 2. A cylindrical cavity is formed inside the external cylindrical grinder spindle, and a top sleeve is installed in the cavity. The tail end of the Morse tip is connected to the top sleeve, and the tip of the Morse tip cooperates with the floating module 2 in a Morse taper.

[0040] The clamping module 4 is mounted on the outer end surface of the floating module 2, and its center is facing the top of the Morse pinnacle. It is used to clamp parts after rotation. The clamping module 4 includes three evenly distributed part clamping cards 41. The side surfaces of the part clamping cards 41 that are close to each other are all arc-shaped surfaces. The arc-shaped surfaces are provided with concave and convex structures that increase friction to ensure stability when clamping parts. Figure 2 As shown, the part clamping cards 41 are provided with threaded holes 411, and the part clamping cards 41 are connected to the floating module 2 by screws. The threaded holes 411 provided on the part clamping cards 41 are located on the same circumference, and the distances from the threaded holes 411 to the center of the positioning module 3 are equal. The part clamping cards 41 are provided with waist-shaped grooves 412, and the part clamping cards 41 are connected to the chuck body 1 by pins 413 movably inserted in the waist-shaped grooves 412. The chuck body 1 of this embodiment is made of aluminum alloy, and the part clamping cards 41 are made of stainless steel.

[0041] The working principle of this embodiment is as follows Figure 3As shown, after the cylindrical grinder is started, the spindle of the cylindrical grinder rotates, and then drives the chuck body 1 and the floating module 2 to rotate. After the part is lifted by the Morse pinnacle of the cylindrical grinder, the part is centered, and the chuck body 1 and the floating module 2 compensate for the floating, only providing rotational power, and not applying radial force to the part to ensure the grinding accuracy of the part. At this time, the part clamping card 41 rotates to clamp the part, and the pin 413 can move a certain range in the waist groove 412. When the grinding is completed, the part clamping card 41 returns to its position and the part is loosened.

[0042] Embodiment 3:

[0043] This embodiment provides a floating chuck for an external cylindrical grinder, wherein the part clamping cards 41 are all connected to conventional pressure sensors for detecting and determining whether the part clamping cards are all clamping the parts, and the other structures are the same as those in Embodiment 2. After the external cylindrical grinder is started, the spindle of the external cylindrical grinder rotates, and then drives the chuck body 1 and the floating module 2 to rotate. After the Morse pinnacle of the external cylindrical grinder is lifted up, the part is centered, and the part clamping cards 41 rotate accordingly to clamp the part. When the three part clamping cards 41 clamp the parts, the pressure sensors of the three receive the extrusion pressure signal of the part on the part clamping cards 41, and then the pressure signal of the sensor will be transmitted to the background control system of the external cylindrical grinder for grinding.

[0044] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A floating chuck for a cylindrical grinding machine, characterized in that: include: The chuck body (1) is mounted on the spindle of the cylindrical grinder; A floating module (2) is coaxially arranged with the chuck body (1) and connected to the chuck body (1); A positioning module (3) is coaxially arranged with the main shaft of the cylindrical grinder and cooperates with the floating module (2); The clamping module (4) is mounted on the outer end surface of the floating module (2) and is used to clamp parts after rotation; the clamping module (4) comprises evenly distributed part clamping cards (41), and the side surfaces of the part clamping cards (41) close to each other are all arc-shaped surfaces, and the arc-shaped surfaces are provided with concave-convex structures for increasing friction.

2. A floating chuck for a cylindrical grinding machine according to claim 1, characterized in that: The chuck body (1) and the floating module (2) are both annular structures, and the chuck body (1) and the floating module (2) are hole-axis matched.

3. The floating chuck of a cylindrical grinding machine according to claim 1, characterized in that: The positioning module (3) is a Morse tip; A cylindrical cavity is formed inside the main shaft of the external cylindrical grinder, a top sleeve is installed in the cavity, the tail end of the Morse tip is connected to the top sleeve, and the tip of the Morse tip is matched with the floating module (2) in Morse taper.

4. A floating chuck for a cylindrical grinding machine according to claim 3, characterized in that: The center of the clamping module (4) faces the top of the Morse pinnacle.

5. The floating chuck of a cylindrical grinding machine according to claim 1, characterized in that: The part clamping cards (41) are each provided with a threaded hole (411), and the part clamping cards (41) are connected to the floating module (2) via screws.

6. A floating chuck for a cylindrical grinding machine according to claim 5, characterized in that: The threaded holes (411) formed on the part clamping card (41) are located on the same circumference, and the distances from the threaded holes (411) to the center of the positioning module (3) are equal.

7. The floating chuck of a cylindrical grinding machine according to claim 1, characterized in that: The number of the part clamping cards (41) is 3-5.

8. The floating chuck of a cylindrical grinding machine according to claim 1, characterized in that: The part clamping card (41) is provided with a waist-shaped groove (412), and the part clamping card (41) is connected to the chuck body (1) via a pin shaft (413) movably inserted into the waist-shaped groove (412).

9. The floating chuck of a cylindrical grinding machine according to claim 1, characterized in that: The parts clamping cards (41) are all connected to pressure sensors.

10. The floating chuck of a cylindrical grinding machine according to claim 1, characterized in that: The chuck body (1) is made of aluminum alloy, and the part clamping card (41) is made of stainless steel.

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