Alloy center special for numerical control cylindrical grinding machine

Abstract

The utility model discloses a special alloy centre for a numerical control cylindrical grinding machine, which relates to the technical field of machine tool accessories and comprises a sleeve seat, a centre cylinder and a centre head, the sleeve seat is mounted in a tailstock of the numerical control cylindrical grinding machine, a mounting groove is arranged in the front end of the sleeve seat, the centre cylinder is inserted in the middle of the mounting groove, and the centre head is inserted in the centre cylinder. A center head is fixed to the end, away from the sleeve base, of the center column body. According to the special alloy center for the numerical control cylindrical grinding machine, after a center head on the front portion of the center column body makes contact with a workpiece to be abraded, the sliding sleeve is pulled through the anti-skid protrusions, so that the sliding sleeve extrudes the spring along the annular groove channel, an inner cavity of the sliding sleeve corresponds to second steel balls which are distributed at equal included angles, and at the moment, the center column body is conveniently pulled to be separated from the sleeve base; and therefore, a new center head can be conveniently replaced, and the center cylinder has the capability of being quickly and stably butted with the sleeve seat.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool accessories, in particular to a special alloy center for a numerically controlled cylindrical grinder. Background Art

[0002] The center is a machine tool component in mechanical processing. It has the characteristics of small outer diameter, less interference cutter, suitable for high speed, moderate cutting, etc. The center needs to be used to tighten the spindle during spindle processing. When using a CNC cylindrical grinder to grind a rod-shaped workpiece, it is necessary to open center holes at both ends of the part in advance for the center to support and position, so as to assist the CNC cylindrical grinder in the precise grinding of rod-shaped material workpieces.

[0003] Common alloy tips contact the workpiece through a conical tip head, thereby reducing the wear of the contact between the tip head and the workpiece. This type of tip still wears out after long-term use, which requires the tip to be replaced. The existing technology requires the entire tip to be disassembled for replacement of the special alloy tip of the CNC cylindrical grinder. This operation is extremely time-consuming and labor-intensive for the replacement of the tip head, so the above problem needs to be improved. Summary of the invention

[0004] The purpose of the utility model is to provide a special alloy center for a numerically controlled cylindrical grinder to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a special alloy center for CNC cylindrical grinding machine, including a sleeve, a center cylinder and a center head,

[0006] The sleeve is installed in the tailstock of the CNC external cylindrical grinder. A mounting groove is opened inside the front end of the sleeve. A top column is inserted in the middle of the mounting groove. A top head is fixed to the end of the top column away from the sleeve.

[0007] Preferably, a groove is provided at the center of the inner wall of the installation groove, and a No. 1 steel ball is clamped inside the groove.

[0008] Preferably, a conical surface is provided at a corner edge of the top column away from the top head, and a positioning opening is provided at the middle of the surface of the top column away from the top head.

[0009] Preferably, an annular groove is provided on the outer side of the sleeve, a receiving opening is provided on the surface of the sleeve close to the annular groove, a No. 2 steel ball is arranged inside the receiving opening, a contraction opening smaller than the diameter of the No. 2 steel ball is provided on the side of the receiving opening close to the inner wall of the sleeve, and a limiting groove for clamping with the No. 2 steel ball is provided on the outer peripheral side of the top column.

[0010] Preferably, a sliding sleeve is inserted into the annular groove, an inner cavity is formed inside the sliding sleeve, a spring is connected to the outer side of the sliding sleeve, and the spring is sleeved in the annular groove.

[0011] Preferably, an annular protrusion is fixed on one side of the inner cavity, the cross-section of the protrusion is a triangular structure, the inner wall of the protrusion is a planar structure, and one side of the protrusion is set as a slope structure, and the outer edge of the sliding sleeve is fixed with anti-slip protrusions at equal angles.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. This special alloy top for CNC cylindrical grinder, after the top head at the front of the top column is in contact with the workpiece and worn, the anti-skid protrusion pulls the sliding sleeve so that the sliding sleeve squeezes the spring along the annular groove, so that the inner cavity of the sliding sleeve corresponds to the No. 2 steel balls with equal angle distribution. At this time, it is convenient to pull the top column out of the sleeve seat, so as to facilitate the replacement of the new top head, and ensure that the top column has the ability to quickly and stably dock with the sleeve seat;

[0014] 2. The alloy top for CNC cylindrical grinding machine is used to insert the top cylinder at the tail of the top head into the installation groove at the front end of the sleeve, so that the second steel ball with equal angle distribution on the cone surface of the top cylinder is squeezed and pushed, so that the second steel ball is ejected outward from the receiving port, so that the positioning port at the tail of the top cylinder is positioned and abutted with the first steel ball, which is convenient for positioning and inserting the top cylinder in the sleeve;

[0015] 3. The alloy top specially used for CNC cylindrical grinder pushes the sleeve to move to the front end of the annular groove through the spring. The protrusion on the inner wall of the sleeve can abut against the No. 2 steel ball through the plane structure of the inner ring. Therefore, when the top head is pulled outward along the installation groove, the limiting groove on the outer peripheral side of the top column squeezes the No. 2 steel ball. The No. 2 steel ball will be restricted and locked by the inner wall of the protrusion when it detaches outward, ensuring that the alloy top can prevent accidental disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the main cutaway structure of the utility model;

[0018] Figure 3 It is a right side cutaway structural schematic diagram of the utility model;

[0019] Figure 4 It is a partial enlarged structural schematic diagram of point A of the utility model.

[0020] In the figure: 1. seat; 2. mounting groove; 201. groove; 202. No. 1 steel ball; 3. top column; 301. conical surface; 302. positioning port; 303. limiting groove; 4. top head; 5. annular groove; 6. storage port; 7. No. 2 steel ball; 8. sliding sleeve; 9. inner cavity; 10. bump; 11. anti-slip protrusion; 12. spring. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1 and Figure 2 The utility model provides a technical solution: a special alloy top for a CNC cylindrical grinder, comprising a sleeve 1, a top cylinder 3 and a top head 4, the sleeve 1 is installed in the tailstock of the CNC cylindrical grinder, a mounting groove 2 is provided inside the front end of the sleeve 1, a top cylinder 3 is inserted in the middle of the mounting groove 2, a top head 4 is fixed to the end of the top cylinder 3 away from the sleeve 1, a groove 201 is provided at the center of the inner wall of the mounting groove 2, and a No. 1 steel ball 202 is clamped inside the groove 201;

[0023] See also Figure 2 The corner edge of the top column 3 away from the top head 4 is provided with a conical surface 301, and the middle part of the surface of the top column 3 away from the top head 4 is provided with a positioning hole 302, and the No. 1 steel ball 202 is coated with lubricating oil to reduce the friction between the No. 1 steel ball 202 and the positioning hole 302;

[0024] See also Figure 2-Figure 4 An annular groove 5 is provided on the outer side of the sleeve 1, and a receiving opening 6 is provided on the surface of the sleeve 1 close to the annular groove 5, and the receiving openings 6 are distributed at equal angles, and a No. 2 steel ball 7 is arranged inside the receiving opening 6, and a shrinkage opening smaller than the diameter of the No. 2 steel ball 7 is provided on the side of the receiving opening 6 close to the inner wall of the sleeve 1, and the position of the No. 2 steel ball 7 can be restricted by the shrinkage opening of the receiving opening 6 to prevent the No. 2 steel ball 7 from falling into the installation groove 2, and a limiting groove 303 is provided on the outer peripheral side of the top column 3 to be clamped with the No. 2 steel ball 7, and the limiting groove 303 is an annular structure.

[0025] During the specific implementation, the top column 3 at the tail of the top head 4 is inserted into the mounting groove 2 at the front end of the sleeve 1, so that the conical surface 301 of the top column 3 pushes the No. 2 steel ball 7 distributed at equal angles, so that the No. 2 steel ball 7 is ejected outward from the receiving port 6, thereby making the positioning port 302 at the tail of the top column 3 positioned and abutted against the No. 1 steel ball 202, making it convenient to position the top column 3 and insert it into the sleeve 1.

[0026] See also Figure 1-Figure 4 A sleeve 8 is inserted into the annular groove 5, an inner cavity 9 is formed inside the sleeve 8, a spring 12 is connected to the outer side of the sleeve 8, and the spring 12 is sleeved in the annular groove 5;

[0027] An annular protrusion 10 is fixed on one side of the inner cavity 9. The cross section of the protrusion 10 is a triangular structure. The inner wall of the protrusion 10 is a planar structure, and one side of the protrusion 10 is set as an inclined structure. The outer edge of the sliding sleeve 8 is fixed with an anti-slip protrusion 11 at an equal angle.

[0028] In specific implementation, when installing the top column 3, first pull the sliding sleeve 8 through the anti-slip protrusion 11, so that the sliding sleeve 8 squeezes the spring 12 along the annular groove 5, so that the inner cavity 9 of the sliding sleeve 8 corresponds to the No. 2 steel balls 7 distributed at equal angles. Therefore, when installing the top column 3, one side of the No. 2 steel ball 7 can be pushed into the interior of the sliding sleeve 8 through the top column 3, ensuring that the top column 3 has the ability to quickly dock with the sleeve 1;

[0029] When the top cylinder 3 is fully inserted into the sleeve 1, the receiving openings 6 with equal angle distribution will correspond to the limiting grooves 303 on the outer peripheral side of the top cylinder 3. At this time, the sliding sleeve 8 is released, and the sliding sleeve 8 can be driven to slide forward when the spring 12 is reset and pushed, so that the inner cavity 9 of the sliding sleeve 8 moves forward, so that the protrusion 10 in the inner cavity 9 can squeeze the No. 2 steel ball 7;

[0030] Since one side of the annular protrusion 10 is an inclined surface structure, the inclined surface of the protrusion 10 will squeeze the No. 2 steel ball 7 to move toward the contraction opening of the receiving opening 6, thereby making the No. 2 steel ball 7 with equal angle distribution clamp the limiting groove 303 on the outer peripheral side of the top column 3, thereby ensuring that the top head 4 has the function of preventing loosening and falling off;

[0031] When the spring 12 pushes the sleeve 8 to move to the front end of the annular groove 5, the protrusion 10 on the inner wall of the sleeve 8 can abut against the No. 2 steel ball 7 through the planar structure of the inner ring, ensuring that the No. 2 steel ball 7 is restricted in the receiving port 6. Therefore, when the top head 4 is pulled outward along the installation groove 2, the limiting groove 303 on the outer peripheral side of the top column 3 squeezes the No. 2 steel ball 7, the No. 2 steel ball 7 will be restricted and locked by the inner wall of the protrusion 10 when it is disengaged outward, ensuring that the alloy top can be prevented from accidental disassembly; when the top column 3 of the alloy top needs to be disassembled, by pulling the sleeve 8, the top column 3 and the top head 4 can ensure that the No. 2 steel ball 7 is disengaged from the limiting groove 303 when they are pulled outward, thereby realizing the rapid replacement of the alloy top.

[0032] To sum up, the truncated cone-shaped sleeve 1 is installed in the tailstock of the CNC external cylindrical grinder, and then the center cylinder 3 is fully inserted into the sleeve 1 for installation. When the center head 4 is pressed against the end of the rod workpiece, the center head 4 and the rod workpiece are assisted by the No. 1 steel ball 202 and the No. 2 steel ball 7 to achieve synchronous rotation. Then, by starting the special alloy center of the CNC external cylindrical grinder, the positioning of the rod workpiece to be ground can be assisted. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may 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 shall be included in the protection scope of the present invention.

Claims

1. A special alloy tip for a CNC cylindrical grinding machine, comprising a sleeve (1), a tip cylinder (3) and a tip head (4), characterized in that: A sleeve (1) is installed in the tailstock of a numerically controlled external cylindrical grinding machine. A mounting groove (2) is provided inside the front end of the sleeve (1). A center column (3) is inserted into the middle of the mounting groove (2). A center head (4) is fixed to the end of the center column (3) away from the sleeve (1).

2. The alloy tip for CNC cylindrical grinding machine according to claim 1, characterized in that: A groove (201) is provided at the centre of the inner wall of the installation groove (2), and a No. 1 steel ball (202) is clamped inside the groove (201).

3. The alloy tip for CNC cylindrical grinding machine according to claim 1, characterized in that: A conical surface (301) is provided at a corner edge of one end of the top column (3) away from the top head (4), and a positioning opening (302) is provided in the middle of the surface of the end of the top column (3) away from the top head (4).

4. The alloy tip for CNC cylindrical grinding machine according to claim 1, characterized in that: An annular groove (5) is provided on the outer side of the sleeve (1), a receiving opening (6) is provided on the surface of the sleeve (1) close to the annular groove (5), a No. 2 steel ball (7) is arranged inside the receiving opening (6), a contraction opening smaller than the diameter of the No. 2 steel ball (7) is provided on one side of the receiving opening (6) close to the inner wall of the sleeve (1), and a limiting groove (303) engaged with the No. 2 steel ball (7) is provided on the outer peripheral side of the top column (3).

5. The alloy tip for CNC cylindrical grinding machine according to claim 4, characterized in that: A sliding sleeve (8) is inserted into the annular groove (5), an inner cavity (9) is provided inside the sliding sleeve (8), a spring (12) is connected to the outer side of the sliding sleeve (8), and the spring (12) is sleeved in the annular groove (5).

6. The alloy tip for CNC cylindrical grinding machine according to claim 5, characterized in that: An annular protrusion (10) is fixed to one side of the inner cavity (9); the cross section of the protrusion (10) is a triangular structure; the inner wall of the protrusion (10) is a planar structure; one side of the protrusion (10) is arranged as an inclined surface structure; and an anti-slip protrusion (11) is fixed at an equal angle to the outer edge of the sliding sleeve (8).

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