CN214921187U - Auxiliary device for processing spiral cam - Google Patents
Auxiliary device for processing spiral cam Download PDFInfo
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- CN214921187U CN214921187U CN202120114172.7U CN202120114172U CN214921187U CN 214921187 U CN214921187 U CN 214921187U CN 202120114172 U CN202120114172 U CN 202120114172U CN 214921187 U CN214921187 U CN 214921187U
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- step motor
- dividing head
- stepping motor
- gear
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Abstract
The utility model relates to a machining technology field specifically is an auxiliary device of processing helicoid cam, and the work piece passes through the key fixed with the axle of dividing head, and dividing head rear end installation drive gear, drive gear are connected with step motor output gear interlock, output gear passes through the key and is connected with step motor, is fixed with the lathe parallels on the lathe workstation, and step motor is fixed on the lathe parallels with the pin, and step motor is connected with the wire cut electrical discharge machining bed, through wire cut electrical discharge machining bed control system drive step motor, and it is rotatory to drive the dividing head, accomplishes course of working with lathe X axle step motor linkage. The device has the advantages of simple structure and reasonable design, improves the working efficiency, ensures the processing quality and reduces the processing cost.
Description
Technical Field
The utility model relates to a machining technical field, especially a special parts's processing field, the auxiliary device who processes helicoid cam promptly. In particular to an auxiliary device which is matched with a linear cutting machine tool for use and has the functions of clamping a workpiece and following in the machining process.
Background
In the production process of electromechanical product projects, a key part often needs to be processed, and belongs to a cam with a spiral surface characteristic, such as the spiral surface cam shown in fig. 1.
The material of the spiral cam is Gr12MoV, and the quenching hardness requirement is HRC 52-56. The conventional processing method is that after the workpiece is finished and meets the requirements of dimensional accuracy and form and position tolerance, the final heat treatment is carried out. However, the stress deformation of the workpiece during the heat treatment directly affects the form and position tolerance and the dimensional accuracy of the workpiece, and under the condition, the workpiece can only be used on the premise of reducing the quality standard of the workpiece, and the rejection rate is extremely high.
Aiming at the problems, in the process of trial production of small batches of workpieces, a scheme that rough machining is firstly carried out on a blank, then heat treatment is carried out, and finally a machining center machine tool is used for carrying out precision machining on the quenched workpiece is adopted. Because the hardness of the quenched workpiece is extremely high, the problem in the machining process is that even if the workpiece is adjusted to the optimal process parameters and the cutting feed rate is relatively low during programming, the cutter is seriously abraded, the dimensional precision of the workpiece is difficult to guarantee, the rejection rate is high, and the machining efficiency is low. Because the number of the spiral cams used on the whole product is very large, the extremely low processing efficiency and the high rejection rate cannot meet the requirement of the production period of the whole product at all, the high use cost of the cutter cannot be accepted, and the change of the processing method is imperative.
Disclosure of Invention
An object of the utility model is to provide an auxiliary device for wire cut electrical discharge machining spiral cam to solve quality problems, efficiency problem, the cost problem mentioned in the above-mentioned technical background.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides an auxiliary device for linear cutting machine processing helicoid cam, includes dividing head, drive gear, step motor, and dividing head (2) front end is three-jaw chuck, and work piece (7) are fixed through the axle of key with the dividing head, and dividing head (2) rear end installation drive gear (3), drive gear (3) are connected with step motor (4) output gear interlock, output gear passes through the key and is connected with step motor (4), is fixed with lathe parallels (5) on lathe workstation (6), and step motor (4) are fixed on lathe parallels (5) with the pin, and step motor (4) are connected with linear cutting machine (1), drive step motor through linear cutting machine control system, drive the dividing head rotatory, accomplish course of working with lathe X axle step motor linkage.
The transmission gear (3) and the output gear of the stepping motor (4) are high-precision gears with small modulus.
The transmission gear (3) is a gear with m =1 and z = 100.
The output gear of the stepping motor (4) is a gear with m =1 and z = 24.
The dividing head is a common machine-added universal dividing head with the center height of 100mm, the front section of the dividing head is a calibrated standard three-jaw chuck, the manual end crank and the dividing disc are removed by the dividing head, and a transmission gear is installed to be connected with an output gear of the stepping motor. And the stepping motor is driven by a wire cutting machine control system to drive the dividing head to rotate, and the dividing head is linked with the X-axis stepping motor of the machine tool to complete the machining process.
The technical effects of the device are as follows: and (3) finishing the machining of the helical surface cam by using a common linear cutting machine and a control system. The device has simple structure and reasonable design, can process the spiral surface cam (or similar parts) only by slightly changing the wire cutting machine tool and the standard dividing head, improves the working efficiency, ensures the processing quality and reduces the processing cost.
Drawings
Fig. 1 is a schematic mechanism diagram of the workpiece helicoid cam of the present invention.
Fig. 2 is a cross-sectional view taken at a-a in fig. 1.
Fig. 3 is a schematic structural diagram of the present invention.
In the figure, a linear cutting machine tool 1, a dividing head 2, a transmission gear 3, a stepping motor 4, a machine tool sizing block 5, a machine tool worktable 6, a workpiece 7 and a molybdenum wire 8 are cut.
Detailed Description
In order to clearly understand the above objects, features and advantages of the present invention, the operation principle of the present invention will be described in further detail with reference to the accompanying drawings 2 and the detailed description, which are for explanation and not for limitation of the device.
The utility model provides an auxiliary device for processing helicoid cam of wire cut electrical discharge machining bed, includes dividing head, drive gear, step motor, and 2 front ends of dividing head are three-jaw chuck, and work piece 7 passes through the key to be fixed with the axle of dividing head, and 2 rear ends of dividing head installation drive gear 3, drive gear 3 and step motor 4 output gear interlock are connected, output gear passes through the key to be connected with step motor 4, is fixed with lathe parallels 5 on the lathe workstation 6, and step motor 4 passes through the installing support to be fixed on lathe parallels 5, and step motor 4 is connected with wire cut electrical discharge machining bed 1, drives step motor through wire cut electrical discharge machining bed control system, drives the dividing head rotatory, accomplishes course of working with lathe X axle step motor linkage.
Considering the driving torque, driving speed and processing precision requirement of the stepping motor, the device is preferably used for selecting a high-precision gear with small modulus, and when the helical cam of the embodiment is processed, the high-precision gear with m =1 and z =100 is selected and fixed with a hand-operated shaft of the dividing head through a key.
The front end of the stepping motor 4 is provided with an output gear, a high-precision gear with small modulus is selected by considering the driving torque, the driving speed and the processing precision requirement of the stepping motor, and the device selects the high-precision gear with m =1 and z =24 and is fixed with the output shaft of the stepping motor through a key. The stepping motor 4 is fixed on a machine tool sizing block 5 through a mounting bracket, and in the installation process of the stepping motor, a gear fit clearance is ensured and is fixed by pins.
Principle of operation
The stepping motor 4 is a stepping motor which is equipped independently, is connected with a Y-axis stepping motor of the machine tool through a change-over switch to realize driving, and is disconnected with the Y-axis stepping motor of the machine tool during working.
The device is firstly installed on a machine tool workbench 6, the direction of a dividing head 2 is parallel to the direction of the X axis of the machine tool, the origin of the X axis coordinate of a workpiece is found, then the center of the workpiece is found through the Y axis, and the Y axis of the machine tool is fixed.
Through the advance and retreat of the X axis, the stepping motor 4 drives the workpiece to rotate, and then the processing of all the spiral surfaces can be completed.
According to the rotating stepping angle of each pulse signal of the stepping motor and the driving distance of each driving pulse of the linear cutting machine 1, the conversion ratio of the programmed size of the Y axis to the labeled size of the drawing is 3.301:1 through conversion. The X-axis is calculated and programmed as follows (note that the workpiece has a feature of rotation during programming, so programming is only performed in half).
The program is generated as follows:
N 1: B 3000 B 0 B 3000 GX L1 ; -14.919 , -4.867
N 2: B 0 B 7419 B 7419 GY L2 ; -14.919 , 2.552
N 3: B 3183 B 2573 B 3183 GX L2 ; -18.102 , 5.125
N 4: B 3183 B 0 B 3183 GX L1 ; -14.919 , 5.125
N 5: B 0 B 7419 B 7419 GY L2 ; -14.919 , 12.544
N 6: B 3000 B 2425 B 3000 GX L2 ; -17.919 , 14.969
N 7: DD
the above programming can be done by the skilled person. In conclusion, the linear cutting machine 1 and the standard dividing head 2 are simply transformed and integrated, so that the production problem of realizing precision machining of the spiral surface in a high-hardness state after quenching is solved.
The auxiliary device is actually verified through production, is reasonable in design and reliable in processing, and has the characteristics of simple structure, high processing efficiency, high qualification rate and low cost.
The above description of the working principle is only a preferred embodiment of the present invention, and the auxiliary device can efficiently and reliably process various workpieces with helicoid characteristics according to the related requirements of helicoids with different sizes, under the state of adjusting transmission parameters and adjusting programming, and is not limited by workpiece hardness. All the cases are contained in the structural form and the working principle frame of the utility model, which is within the protection scope of the utility model.
Claims (2)
1. The utility model provides an auxiliary device of processing helicoid cam, includes dividing head, drive gear, step motor, and dividing head (2) front end is three-jaw chuck, its characterized in that: a workpiece (7) is fixed with an axis of the dividing head through a key, a transmission gear (3) is installed at one end of the dividing head (2), the transmission gear (3) is connected with an output gear of a stepping motor (4) in an occluded mode, the output gear is connected with the stepping motor (4) through the key, a machine tool sizing block (5) is fixed on a machine tool workbench (6), the stepping motor (4) is fixed on the machine tool sizing block (5) through a pin, the stepping motor (4) is connected with a linear cutting machine (1), the stepping motor is driven through a linear cutting machine control system to drive the dividing head to rotate, and the processing process is completed through linkage of the X-axis stepping motor of the machine tool.
2. An auxiliary device for processing a helicoid cam according to claim 1, wherein: the transmission gear (3) is a gear with m =1 and z =100, and the output gear of the stepping motor (4) is a gear with m =1 and z = 24.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120114172.7U CN214921187U (en) | 2021-01-16 | 2021-01-16 | Auxiliary device for processing spiral cam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120114172.7U CN214921187U (en) | 2021-01-16 | 2021-01-16 | Auxiliary device for processing spiral cam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214921187U true CN214921187U (en) | 2021-11-30 |
Family
ID=79122400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120114172.7U Active CN214921187U (en) | 2021-01-16 | 2021-01-16 | Auxiliary device for processing spiral cam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214921187U (en) |
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2021
- 2021-01-16 CN CN202120114172.7U patent/CN214921187U/en active Active
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