CN218656847U

CN218656847U - Adjustable lathe pin-pulling device

Info

Publication number: CN218656847U
Application number: CN202222994786.6U
Authority: CN
Inventors: 刘治华
Original assignee: Jingzhou Huanqiu Automobile Parts Manufacturing Co ltd
Current assignee: Jingzhou Huanqiu Automobile Parts Manufacturing Co ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-03-21
Anticipated expiration: 2032-11-10

Abstract

The utility model belongs to the technical field of machining equipment tools, in particular to an adjustable lathe shifting pin device, which at least comprises a shifting pin with one end matched with a workpiece, a centre, a shifting block sleeved outside the centre and a screw key for fastening the shifting block and the centre; the center consists of a conical head, a cylindrical middle part and a tail handle in sequence from the part close to the workpiece to the part far away from the workpiece, more than one shifting block key groove is arranged on the side surface of the cylindrical middle part, and the shifting block key grooves are parallel to the central axis of the cylindrical middle part; the shifting block is cylindrical and is sleeved outside the cylindrical middle part of the center, a shifting pin groove matched with the other end of the shifting pin is formed in the bottom surface, close to the workpiece, of the shifting block, screw holes matched with the shifting block key groove in number and position are formed in the side face of the shifting block, and the screw keys are matched with the screw holes in number and size. The utility model provides a can be applicable to the camshaft of different centre bore sizes, and can be used to numerical control lathe and lathe's device, the commonality is strong, simple structure, it is convenient to use, extensive applicability.

Description

Adjustable lathe pin-pulling device

Technical Field

The utility model belongs to the technical field of machining equipment frock, in particular to adjustable lathe shifting pin device.

Background

During machining, the camshaft needs to be clamped in a two-top mode, when the end face of the excircle is guaranteed to jump, the shifting pin is used for driving the workpiece to rotate, tool design is reduced, and machining of all excircles and end faces can be finished at one time. However, different pin pulling devices are required for camshafts with different central bore sizes, and even the pin pulling devices used for numerically controlled lathes and general lathes are different. It is therefore desirable to design a deadbolt mechanism that can accommodate different center hole sizes.

Disclosure of Invention

In order to solve the problems, the utility model provides a device which can be suitable for camshafts with different central hole sizes and can be used for a numerical control lathe and a common lathe, and the concretely adopted technical scheme is an adjustable lathe pin shifting device which at least comprises a pin shifting device with one end matched with a workpiece, a centre, a shifting block sleeved outside the centre and a screw key for fastening the shifting block and the centre; the center consists of a conical head, a cylindrical middle part and a tail handle in sequence from the part close to the workpiece to the part far away from the workpiece, more than one shifting block key groove is arranged on the side surface of the cylindrical middle part, and the shifting block key grooves are parallel to the central axis of the cylindrical middle part; the shifting block is cylindrical and is sleeved outside the cylindrical middle part of the center, a shifting pin groove matched with the other end of the shifting pin is formed in the bottom surface, close to the workpiece, of the shifting block, screw holes matched with the shifting block key grooves in number and position are formed in the side face of the shifting block, the screw holes penetrate through the side face of the shifting block and are perpendicular to the shifting block key grooves, and the number and size of the screw keys are matched with those of the screw holes.

Moreover, the shifting block is cylindrical, one surface facing the workpiece is a bottom surface, and the surface provided with the screw hole is a side surface.

And the workpiece is a camshaft, and the aperture of the central hole at the end part of the camshaft is smaller than the maximum cross section diameter of the conical head part of the tip.

Compared with the prior art, the technical scheme has the beneficial effects that: 1. the center consists of a conical head part, a cylindrical middle part and a tail handle in sequence from a position close to a workpiece (camshaft) to a position far away from the workpiece, wherein the conical head part can extend into central holes of the camshafts with different sizes, and the structure can be simultaneously suitable for a numerical control lathe and a common lathe and has strong universality; the cylindrical middle part is used for sleeving the shifting block, the shifting block can be prevented from rotating after assembly, and the tail handle is used for being fixed; 2. more than one shifting block key groove is formed in the surface of the cylindrical middle part of the center, screw holes matched with the shifting block key grooves in number and position are formed in the side face of the shifting block, the screw holes penetrate through the side face of the shifting block and are perpendicular to the shifting block key grooves, and the shifting block key grooves can be clamped by assembling screw keys in the screw holes, so that the center and the shifting block cannot rotate relatively; 3. one end of the shifting pin is matched with the workpiece, the other end of the shifting pin is matched with the shifting pin groove of the shifting block, and the shifting block cannot rotate as long as the top tip cannot rotate, so that the shifting pin and the workpiece cannot rotate, and the workpiece can be machined; 4. the shifting block is sleeved outside the cylindrical middle part of the tip and can move, and the distance between the shifting block and the workpiece can be adjusted by changing the length of the shifting pin, so that the adjustment is convenient, and the space for machining the end face of the workpiece can be reserved; 5. in conclusion, the device has strong universality, simple structure, convenient use and wide applicability.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a schematic structural view of the embodiment as viewed from the direction of the tail handle;

description of the reference numerals:

1. a workpiece; 2. pulling a pin; 3. a tip; 4. shifting blocks; 5. a screw key; 6. a shifting block key groove; 7. a pin pulling groove; 8. screw holes.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples, but the present invention is not limited to the following examples.

An adjustable lathe pin pulling device is used when machining is needed to be carried out on an excircle A and an end face B of a workpiece 1 (namely a camshaft). As shown in fig. 1 and 2, the device consists of a shifting pin 2, a tip 3, a shifting block 4 sleeved outside the tip and a screw key 5 for fastening the shifting block and the tip. One end of the shifting pin 2 is matched with the workpiece and clamped into the workpiece, and the other end of the shifting pin is matched with the shifting pin groove 7 of the shifting block and clamped into the shifting block, so that the shifting block and the workpiece can be connected into a whole, wherein the shifting pin groove of the shifting block is arranged on the bottom surface close to the workpiece.

The center is composed of a conical head, a cylindrical middle part and a tail handle in sequence from the position close to a workpiece to the position far away from the workpiece (from right to left in the figure 1), and the center is of an integrated structure. The maximum cross section diameter of the conical head is larger than the aperture of the central hole of the end part of a workpiece (namely, a camshaft), so that the conical head can extend into the central hole of the camshaft, and other parts of the center cannot extend into the central hole.

The tail handle is used for being clamped and fixed by the chuck, and the tail handle clamped and fixed by the chuck can not rotate.

One or more shifting block key grooves 6 are formed in the side surface of the cylindrical middle part of the center, and the shifting block key grooves are parallel to the central axis of the cylindrical middle part. The shifting block 4 is cylindrical and is sleeved outside the cylindrical middle part of the center, screw holes 8 matched with the shifting block key grooves in number and position are formed in the side face of the shifting block, the screw holes penetrate through the side face of the shifting block and are perpendicular to the shifting block key grooves, and the screw keys 5 are matched with the screw holes in number and size. When the screw key is not assembled, the shifting block is sleeved outside the cylindrical middle part of the tip and can move, and the distance between the shifting block and the workpiece can be adjusted by matching with the shifting pins with different lengths, so that a space for machining the end face B of the workpiece is reserved; after the screw key is assembled in the screw hole, the screw key can be clamped into the shifting block key groove by screwing down the screw key, and the size of the screw key is matched with that of the shifting block key groove, so that the shifting block cannot rotate relative to the tip (namely the screw key is clamped into the shifting block key groove to prevent the shifting block from rotating relative to the tip).

And the shifting block is cylindrical, one surface facing the workpiece is a bottom surface, and the surface provided with the screw hole is a side surface.

When the tool is used, the shifting block is preassembled on the center by the screw key, the tail handle of the center is clamped by the chuck, one end of the shifting pin is clamped into a workpiece, the distance between the shifting block and the workpiece (left and right movement in figure 1) is adjusted according to the length of the shifting pin and the size of the central hole of the workpiece, and then the screw key is screwed down to start machining the excircle A and the end face B of the workpiece. Because the tail handle cannot rotate, namely the tip cannot rotate, the shifting block cannot rotate relative to the tip due to the screw key, and the workpiece cannot rotate relative to the shifting block due to the shifting pin, the machining operation is safe and stable.

Compared with the prior art, the technical scheme has the beneficial effects that: 1. the centre sequentially consists of a conical head part, a cylindrical middle part and a tail handle from the position close to a workpiece (a camshaft) to the position far away from the workpiece, wherein the conical head part can extend into central holes of the camshafts with different sizes, and the structure can be simultaneously suitable for a numerical control lathe and a common lathe and has strong universality; the cylindrical middle part is used for sleeving the shifting block, the shifting block can be prevented from rotating after assembly, and the tail handle is used for being fixed; 2. more than one shifting block key groove is formed in the surface of the cylindrical middle part of the center, screw holes matched with the shifting block key grooves in number and position are formed in the side face of the shifting block, the screw holes penetrate through the side face of the shifting block and are perpendicular to the shifting block key grooves, and the shifting block key grooves can be clamped by assembling screw keys in the screw holes, so that the center and the shifting block cannot rotate relatively; 3. one end of the shifting pin is matched with the workpiece, the other end of the shifting pin is matched with the shifting pin groove of the shifting block, and the shifting block cannot rotate as long as the tip cannot rotate, so that the shifting pin and the workpiece cannot rotate, and the workpiece can be machined; 4. the shifting block is sleeved outside the cylindrical middle part of the tip and can move, and the distance between the shifting block and the workpiece can be adjusted by changing the length of the shifting pin, so that the adjustment is convenient, and the space for machining the end face of the workpiece can be reserved; 5. in conclusion, the device has strong universality, simple structure, convenient use and wide applicability.

Claims

1. The utility model provides an adjustable lathe shifting pin device, includes the shifting pin that one end and work piece matched at least, its characterized in that: the device also comprises a centre, a shifting block sleeved outside the centre and a screw key for fastening the shifting block and the centre; the center consists of a conical head, a cylindrical middle part and a tail handle in sequence from the part close to the workpiece to the part far away from the workpiece, more than one shifting block key groove is arranged on the side surface of the cylindrical middle part, and the shifting block key grooves are parallel to the central axis of the cylindrical middle part; the shifting block is cylindrical and is sleeved outside the cylindrical middle part of the center, a shifting pin groove matched with the other end of the shifting pin is formed in the bottom surface, close to the workpiece, of the shifting block, screw holes matched with the shifting block key grooves in number and position are formed in the side face of the shifting block, the screw holes penetrate through the side face of the shifting block and are perpendicular to the shifting block key grooves, and the number and size of the screw keys are matched with those of the screw holes.

2. The adjustable lathe deadbolt assembly of claim 1, wherein: the shifting block is cylindrical, one surface facing the workpiece is a bottom surface, and the surface provided with the screw hole is a side surface.

3. The adjustable lathe deadbolt assembly of claim 1, wherein: the workpiece is a camshaft, and the aperture of a central hole at the end part of the camshaft is smaller than the maximum cross section diameter of the conical head of the tip.