Center device

Abstract

The utility model discloses a centre device which comprises a centre body, a first end of the centre body is provided with a mounting hole; the number of the center core parts is at least two, and the mounting parts of the center core parts are mounted in the mounting holes in the center body; the center storage sleeve is detachably connected with the second end of the center body; the mounting hole is a Morse taper hole, the mounting part is provided with a Morse taper section, and the Morse taper section and the Morse taper hole are mounted in a matched manner; the center device further comprises an inner cooling pipe, and the inner cooling pipe is installed in the center storage sleeve. The center device can be well matched with a machine tool spindle, the center core part can be conveniently installed and replaced, the working precision is guaranteed, and the center device and the center storage sleeve can be used as a cutter to be installed on a cutter shaft or stored in a machine tool magazine so as to be conveniently stored; the inner cooling pipe can efficiently blow away scrap iron adhered to the center core part through high-pressure inner cooling, and the scrap iron is prevented from entering the center storage sleeve along with the center core part to affect storage of the center device.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine tool processing, and specifically relates to a top device. Background Art

[0002] During the process of machining the V12 crankshaft on the Gamma2000 turning-milling machine tool, the center needs to be manually installed on the machine tool, and then manually disassembled and stored after machining. When machining different models of crankshafts, the machine needs to be stopped multiple times for replacement. The process is cumbersome and affects the machining efficiency of the crankshaft. At the same time, when replacing the center, it is necessary to ensure that the concentricity of different center cores and the spindle is consistent. The existing docking structure design of the center core and the spindle is too complicated, not easy to clamp, and prone to errors, affecting the machining accuracy of the center.

[0003] In addition, a lot of iron filings will be generated during the processing of the crankshaft by the machine tool center, and some of them may remain on the center. If they are not discovered and cleaned in time, the size of the processed crankshaft will have a large error, seriously affecting the product accuracy. Chinese patent application CN202311081762.4 A lathe center anti-clamping iron filing device, method and horizontal CNC lathe, by designing a scraper and a blowing device, the iron filings on the center are cleaned, but the device structure is complex, the operation steps are cumbersome, and the scraper needs to move from the tail end of the center to the front end of the center. The process is time-consuming and not suitable for the Gamma2000 turning and milling compound machine tool.

[0004] Therefore, there is an urgent need to develop a top device that is easy to disassemble and assemble and convenient for chip removal, can be well adapted to the machine tool spindle, is easy to install and ensures working accuracy. Utility Model Content

[0005] The purpose of the utility model is to provide a top device that can be well adapted to the machine tool spindle and is easy to install while ensuring working accuracy. It can be installed on the tool shaft or stored in the machine tool magazine as a tool together with the top storage sleeve; it can blow away the iron chips adhering to the top through high-pressure coolant, thereby improving processing efficiency and quality.

[0006] The specific contents of the plan are as follows:

[0007] The utility model records a top device, comprising: a top body, wherein a first end of the top body is provided with a mounting hole;

[0008] There are at least two top cores, and the mounting parts of the top cores are mounted in the mounting holes on the top body;

[0009] A tip storage sleeve is detachably connected to the second end of the tip body.

[0010] Preferably, the mounting hole is a Morse tapered hole, the mounting portion is provided with a Morse tapered section, and the Morse tapered section is mounted in cooperation with the Morse tapered hole.

[0011] Preferably, an elastic limiting piece is installed on the inner wall of the tip storage sleeve, and a limiting groove cooperating with the elastic limiting piece is provided on the outer wall of one end of the tip body connected to the tip storage sleeve.

[0012] Preferably, the elastic stopper is a ball head ejector pin, a spring is arranged inside the ball head ejector pin, one end of the spring is connected to the first end of the ball head ejector pin, the other end of the spring is connected to a steel ball, and the steel ball extends out of a through hole arranged on the second end of the ball head ejector pin;

[0013] The ball head ejector pin is disposed through the side wall of the ejector storage sleeve, and the steel ball protrudes from the inner wall of the ejector storage sleeve;

[0014] The limiting groove is a circular arc groove, and the circular arc groove is clamped with the steel ball.

[0015] Preferably, the top core comprises:

[0016] The first top core part, the taper of the mounting part of the first top core part is Morse taper No. 4, and the working part is truncated cone with a taper of 60 degrees.

[0017] Preferably, the top core comprises:

[0018] The second top core part, the taper of the mounting part of the second top core part is Morse taper No. 4, and the working part is conical with a taper of 60 degrees.

[0019] Preferably, at least three elastic limiting members are provided and are evenly arranged on the inner wall of the tip storage sleeve along the circumferential direction.

[0020] Preferably, the top device further comprises an inner cooling tube, and the inner cooling tube is installed inside the top storage sleeve.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. The tip storage sleeve of the utility model is snap-connected with the tip body, and the shape of one end of the tip storage sleeve is designed to be a tool handle shape adapted to the machine tool. When in use, the entire tip device can be installed on the tool shaft like a tool or stored in the tool magazine when not in use.

[0023] 2. The utility model designs two kinds of center core parts, and realizes the connection with the center body through the Morse taper section and the Morse taper hole that cooperate with each other. The docking structure is simple, and it is convenient to install and replace the center core parts. It can ensure the concentricity with the main shaft during the rapid replacement of the two center core parts. It has high processing accuracy. Only one set of center device can complete the processing of various types of crankshafts, which reduces the manufacturing cost and has stronger versatility.

[0024] 3. The utility model has an internal cooling tube installed inside the top storage sleeve, which can efficiently blow away the iron chips stuck on the top core through high-pressure internal cooling, increase the brittleness of the chips and make them easy to break, thereby obtaining short chips, so that the chips are no longer entangled, thereby improving processing efficiency and quality, and at the same time preventing iron chips from following the top core into the top storage sleeve and affecting the storage of the top device. The structure is simple and the effect is outstanding. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an exploded view of the utility model;

[0026] Figure 2 This is a schematic structural diagram of the first top core of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the ball head ejector of the utility model;

[0028] Figure 4 It is a schematic diagram of the structure after the second center core and the center body of the utility model are installed in coordination;

[0029] Figure 5 It is a schematic diagram of the structure of the first center core and the center body after being installed in coordination with each other in the utility model;

[0030] In the figure:

[0031] 1. Tip storage sleeve; 2. Tip body; 21. Arc groove; 3. First tip core; 4. Second tip core; 5. Internal cooling tube; 6. Ball head ejector pin; 7. Locking nut. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0033] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0034] It should be noted that the directions or positional relationships indicated by the terms "front", "rear", "inside" and "outside" in the present invention are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0035] It should be particularly noted that any symbols and / or numbers in the specification that are not marked in the accompanying drawings are not drawing marks.

[0036] Embodiment 1:

[0037] See also Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, a top device provided in an embodiment of the present application includes: a top body 2, a first end of the top body 2 is provided with a mounting hole;

[0038] There are two top cores, and the mounting parts of the top cores are mounted in the mounting holes on the top body 2;

[0039] The top storage sleeve 1 is clamped with the second end of the top body 2.

[0040] The tip storage sleeve is snap-connected to the tip body, and the shape of one end of the tip storage sleeve is designed to be a tool handle shape that matches the machine tool. When in use, the entire tip device can be installed on the tool shaft like a tool or stored in the tool magazine when not in use; two tip cores are provided, and are installed on the mounting holes through the mounting part, so that the tip core is installed on the tip body, so that the tip core can be replaced when a tip core of different specifications is required to process the workpiece.

[0041] See also Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the mounting hole is a Morse tapered hole, and the mounting portion is provided with a Morse tapered section, which is installed in coordination with the Morse tapered hole.

[0042] Two types of center cores are designed, and the connection with the center body is achieved through the matching Morse taper section and Morse taper hole. The docking structure is simple, and the concentricity with the main shaft can be ensured during the rapid replacement of the two center cores. It has high processing accuracy, and only one set of center device can complete the processing of various types of crankshafts, reducing the manufacturing cost.

[0043] See also Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, an elastic limiting member is installed on the inner wall of the tip storage sleeve 1, and a limiting groove cooperating with the elastic limiting member is provided on the outer wall of one end where the tip body 2 is connected to the tip storage sleeve 1.

[0044] The elastic limiting member and the limiting groove cooperate with each other to realize the connection and separation of the top storage sleeve 1 and the top body 2.

[0045] See also Figure 3 As shown, the elastic stopper is a ball head ejector pin 6, a spring is arranged inside the ball head ejector pin 6, one end of the spring is connected to the first end of the ball head ejector pin, and the other end of the spring is connected to a steel ball, and the steel ball extends out of a through hole arranged on the second end of the ball head ejector pin 6;

[0046] The elastic limiter is a ball head thimble 6, inside which a spring is arranged, one end of the spring is connected to the first end of the ball head thimble, and the other end of the spring is connected to a steel ball, the diameter of the steel ball is 3 mm, and the steel ball is pushed by the spring inside the ball head thimble to ensure that the steel ball can perform axial telescopic movement along the ball head thimble when subjected to external force, and the steel ball extends out of the through hole arranged on the second end of the ball head thimble 6; a slotted groove is provided on the end face of the first end of the ball head thimble, and a slotted wrench is used to install the ball head thimble.

[0047] The ball head thimble 6 is inserted into the radial hole of the side wall of the top storage sleeve 1, and the steel ball of the ball head thimble is screwed into the axis of the top storage sleeve 1. When the steel ball of the ball head thimble 6 completely protrudes from the inner wall of the top storage sleeve 1, it is locked by the locking nut 7.

[0048] The limiting groove is an arc groove 21 , the groove shape of the arc groove 21 is the same as the steel ball of the ball head ejector pin 6 , and the axial position corresponds so that the arc groove 21 and the steel ball are clamped together, thereby elastically fixing the top body 2 and the top storage sleeve 1 together.

[0049] See also Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the top core includes:

[0050] The first top core 3, the taper of the mounting portion of the first top core 3 is Morse taper No. 4, the working portion is truncated cone-shaped, the taper is 60 degrees, and the maximum auxiliary support diameter is 50mm.

[0051] The second top core 4 has a mounting portion with a Morse taper of No. 4, a working portion with a conical shape and a taper of 60 degrees, and a maximum auxiliary support diameter of 40 mm.

[0052] The first top core 3 and the second top core 4 are connected to the top body 2 through a Morse No. 4 taper. The two top cores share one top body and can be switched freely according to the type of workpiece. The first top core 3 is used to process the UV71 model V12 crankshaft with a positioning center hole diameter of 46 mm, and the second top core 4 is used to process the UV70 model V12 crankshaft with a positioning center hole diameter of 32 mm. During the machining process, the soft claws of the machine tool sub-spindle chuck clamp one end of the top body 2 away from the top core, and then the machine tool sub-spindle is moved to make the working area of ​​the top core contact the crankshaft positioning center hole to exert the top force, thereby realizing the auxiliary support function of the top.

[0053] See also Figure 1 As shown, there are three elastic limiting members, which are evenly arranged on the inner wall of the top storage sleeve 1 along the circumferential direction.

[0054] The elastic limiting component is a ball head ejector pin 6 including ball head ejector pin 1, ball head ejector pin 2 and ball head ejector pin 3. Each ball head ejector pin is screwed to the top storage sleeve 1 through a threaded section of M10*1. The locking nut 7 includes locking nut 1, locking nut 2 and locking nut 3. The locking nut thread is M10*1. Each locking nut is screwed to a part of a ball head ejector pin 6 protruding from the outer wall of the top storage sleeve 1 to achieve locking of the ball head ejector pin 6.

[0055] See also Figure 1 As shown, the top device further comprises an inner cooling pipe 5 , which is installed inside the top storage sleeve 1 .

[0056] The internal cooling tube can efficiently blow away the iron chips stuck on the core of the top through high-pressure internal cooling, making the chips more brittle and easier to break, thereby obtaining short chips, so that the chips are no longer entangled, improving processing efficiency and quality, and at the same time preventing iron chips from following the core of the top into the top storage sleeve and affecting the storage of the top device. It has a simple structure and outstanding effect.

[0057] The assembly and disassembly process of the top device of this embodiment is as follows:

[0058] Assembly process: When the top core and the top body 2 are connected through a taper and installed in the top storage sleeve 1, the steel ball of the ball head thimble 6 is clamped into the arc groove 21 of the top body 2, so that the top core and the top body 2 are clamped together with the top storage sleeve 1. It is ensured that the top core and the top body 2 can move together with the top storage sleeve 1 without falling off. When in use, the entire top device can be installed on the tool shaft like a tool or stored in the tool magazine when not in use.

[0059] Disassembly process: After the soft claws of the machine tool sub-spindle chuck clamp the top body 2, when the tool shaft drives the top storage sleeve 1 away from the top body, the steel ball of the ball head thimble is under pressure and retracts into the inside of the ball head thimble, thereby disengaging from the arc groove 21 of the top body 2, thereby realizing the separation of the top body 2 and the top storage sleeve 1.

[0060] The top core and the top body 2 can be quickly replaced by a taper connection. When processing different models of V12 crankshafts, only the top core needs to be replaced, which reduces manufacturing costs and improves versatility.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A top device, characterized in that, include: A center body (2), wherein a mounting hole is provided at a first end of the center body (2); At least two top cores are provided, and the mounting parts of the top cores are mounted in the mounting holes on the top body (2); A tip storage sleeve (1), wherein the tip storage sleeve (1) is detachably connected to the second end of the tip body (2).

2. The top device according to claim 1, characterized in that: The mounting hole is a Morse tapered hole, the mounting portion is provided with a Morse tapered section, and the Morse tapered section is mounted in cooperation with the Morse tapered hole.

3. The top device according to claim 1, characterized in that: An elastic limiting member is installed on the inner wall of the tip storage sleeve (1), and a limiting groove cooperating with the elastic limiting member is provided on the outer wall of one end of the tip body (2) connected to the tip storage sleeve (1).

4. The top device according to claim 3, characterized in that: The elastic stopper is a ball head ejector pin (6), a spring is arranged inside the ball head ejector pin (6), one end of the spring is connected to the first end of the ball head ejector pin, the other end of the spring is connected to a steel ball, and the steel ball extends out of a through hole arranged on the second end of the ball head ejector pin (6); The ball head ejector pin (6) is disposed through the side wall of the ejector storage sleeve (1), and the steel ball protrudes from the inner wall of the ejector storage sleeve (1); The limiting groove is a circular arc groove (21), and the circular arc groove (21) and the steel ball are clamped together.

5. The top device according to claim 2, characterized in that: The top core comprises: The first center core (3) has a mounting portion with a taper of Morse taper No. 4, and a working portion in a truncated cone shape with a taper of 60 degrees.

6. The tip device according to claim 2, characterized in that: The top core comprises: The second center core (4) has a mounting portion with a taper of Morse taper No. 4, and a working portion with a conical shape and a taper of 60 degrees.

7. The tip device according to claim 3, characterized in that: At least three elastic limiting members are provided, and are evenly arranged on the inner wall of the tip storage sleeve (1) along the circumferential direction.

8. The tip device according to claim 1, characterized in that: It also comprises an inner cooling pipe (5), wherein the inner cooling pipe (5) is installed inside the tip storage sleeve (1).

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