Manual simple dividing device used on numerical control lathe

Abstract

The invention relates to the technical field of numerical control machine tools, in particular to a manual simple indexing device used on a numerical control lathe, which comprises an indexing positioning gear fixed on a lathe spindle by using a flat key and a fixed seat fixed on the side wall of a lathe headstock by using a fixing screw, a manual screw rod is installed in the center of the fixing base in a threaded connection mode and arranged vertically, an indexing positioning rack is rotatably installed at the end, facing the indexing positioning gear, of the manual screw rod, at least one guide column is installed on the lower end face of the indexing positioning rack in a threaded connection mode, and guide holes matched with the guide columns are formed in the fixing base. The device has the beneficial effects that 1, the structure is simple, indexing and jacking of the main shaft can be realized by improving a lathe by increasing little cost, the practicability is high, and the maintenance cost is low; and 2, the manual simple dividing device is additionally arranged on the numerical control lathe, and the milling of the workpiece can be completed by utilizing the longitudinal and transverse feeding of the numerical control lathe, so that the function of the numerical control lathe is expanded.

Description

Technical Field

[0001] The invention relates to the technical field of numerically controlled machine tools, in particular to a manual simple indexing device used on a numerically controlled lathe. Background Art

[0002] With the development of mechanical processing industry, the application of CNC lathes has become more and more popular, and the processing of mechanical parts has become more and more complex, requiring as many processing steps as possible to be completed on one machine tool. This not only reduces the processing time, but also improves the processing accuracy and saves costs.

[0003] There is no simple and convenient indexing device on the existing CNC lathes to realize milling and drilling keyways and holes. For example, the Chinese patent with application number CN201510343791.2 discloses a lathe spindle indexing device, which mainly installs and fixes a worm gear on the spindle extending outside the spindle box, and installs a sliding and adjustable slide plate on the outside of the spindle box. The slide plate is equipped with a worm, and the worm is driven by a stepper motor. The engagement or separation of the worm gear and the worm can be realized by sliding the slide plate to different positions, thereby realizing the indexing of the spindle. The above-mentioned indexing device has a complex structure and is inconvenient to adjust. Summary of the invention

[0004] The present invention is to solve the above problems and proposes a manual simple indexing device used on a CNC lathe.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A manual simple indexing device for use on a CNC lathe, comprising an indexing positioning gear fixed to the lathe spindle by a flat key and a fixing seat fixed to the side wall of the lathe headstock by a fixing screw, a manual screw being installed at the center of the fixing seat by threaded connection, the manual screw being arranged vertically, an indexing positioning rack being rotatably installed on one end of the manual screw toward the indexing positioning gear, at least one guide column being installed on the lower end surface of the indexing positioning rack by threaded connection, and a guide hole being formed on the fixing seat and being installed in cooperation with the guide column.

[0007] Furthermore, a horizontally arranged positioning pin is slidably mounted on the fixing seat, and an end of the fixing pin is fixed on a side wall of a headstock of the lathe.

[0008] Furthermore, the number of teeth of the indexing and positioning gear is an integer multiple of the number of keyways or holes uniformly distributed in the circumferential direction on the outer circle or end face of the workpiece.

[0009] Furthermore, an auxiliary rod insertion hole is formed on a side wall of one end of the manual screw away from the indexing and positioning rack.

[0010] Furthermore, a circular dial is fixed on the outer side wall of the indexing and positioning gear.

[0011] By adopting the above technical solution, the beneficial effects of the present invention are as follows: 1. The structure is simple, and the indexing and tightening of the spindle can be realized by modifying the lathe at a very low cost, and the structure is reliable, practical, and has low maintenance cost;

[0012] 2. By installing the manual simple indexing device on the CNC lathe, the milling of the workpiece can be completed by utilizing the longitudinal and lateral feed of the CNC lathe, thus expanding the function of the CNC lathe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 is a main cross-sectional view of the present invention;

[0015] Figure 2 It is a side sectional view of the present invention.

[0016] The following are the descriptions of the reference numerals:

[0017] 1. Flat key; 2. Indexing and positioning gear; 3. Indexing and positioning rack; 4. Fixed seat; 5. Guide column; 6. Manual screw; 7. Positioning pin; 8. Fixing screw. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1-Figure 2As shown, a manual simple indexing device for use on a CNC lathe comprises an indexing positioning gear 2 fixed on the lathe spindle by a flat key 1 and a fixing seat 4 fixed on the side wall of the lathe headstock box by a fixing screw 8. The fixing seat 4 is fixed by 2 or 4 fixing screws 8. A manual screw 6 is installed at the center of the fixing seat 4 by threaded connection. The manual screw 6 is vertically arranged. An indexing positioning rack 3 is installed by rotating the manual screw 6 toward one end of the indexing positioning gear 2. The indexing positioning rack 3 can be driven to rise or fall by rotating the manual screw 6 to complete the clamping or loosening of the indexing positioning gear. At least one guide column 5 is installed on the lower end surface of the indexing positioning rack 3 by threaded connection. A guide hole is formed on the fixing seat 4 to cooperate with the guide column 5. The guide column 5 can prevent the indexing positioning gear 2 from driving the indexing positioning rack 3 to move after being subjected to force. At the same time, the manual screw 6 can be protected, the force on the manual screw 6 can be dispersed, and the manual screw 6 can be prevented from bending and deformation.

[0020] In this embodiment, a horizontally arranged positioning pin 7 is slidably installed on the fixed seat 4, and the end of the fixing pin is fixed on the side wall of the lathe headstock box. When installing the fixed seat 4, the fixed seat 4 is first slidably inserted into the positioning pin 7 and then the fixing screw 8 is installed. This can avoid the central axis of the fixed seat 4 from being misaligned when installing and affecting the installation accuracy. At the same time, the rotation angle of the dividing positioning gear 2 can be understood through the corresponding position changes of the positioning pin 7 and the teeth of the dividing positioning gear 2.

[0021] In this embodiment, the number of teeth of the indexing positioning gear 2 is an integer multiple of the number of keyways or holes uniformly distributed circumferentially on the outer circle or end face of the workpiece. The indexing degree is associated with the number of teeth of the gear ring, which facilitates the processing of keyways or holes after equal division.

[0022] In this embodiment, an auxiliary rod insertion hole is formed on the side wall of one end of the manual screw rod 6 away from the indexing and positioning rack 3. By installing an auxiliary rod at the lower end of the manual screw rod 6, the force for rotating the manual screw rod 6 can be reduced.

[0023] In this embodiment, a circular scale plate is fixed on the outer side wall of the indexing and positioning gear 2, so as to facilitate accurate rotation of the indexing and positioning gear 2 for rapid indexing.

[0024] The working principle of the present invention is: when processing a keyway or a hole, the manual screw 6 is turned to drive the indexing and positioning rack 3 to rise and engage with the indexing and positioning gear 2 to complete the locking of the lathe spindle to prevent the lathe spindle from rotating, and then the boring and milling device is used to process the keyway or hole of the workpiece fixed at the end of the lathe spindle. After the processing of a single keyway or hole is completed, the manual screw 6 is loosened to make it rotate in the opposite direction to drive the indexing and positioning rack 3 to descend away from the indexing and positioning gear 2, and then the indexing and positioning gear 2 is manually rotated by a certain angle and then the manual screw 6 is rotated again to make the indexing and positioning rack 3 rise and clamp the column indexing and positioning gear 2, so that the next keyway or hole can be processed.

[0025] Components not described in detail herein are prior art.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A manual simple indexing device for use on a CNC lathe, characterized in that: The invention comprises a dividing and positioning gear (2) fixed on a main shaft of a lathe by means of a flat key (1) and a fixing seat (4) fixed on a side wall of a headstock box of the lathe by means of fixing screws (8); a manual screw rod (6) is installed at the center of the fixing seat (4) by means of a threaded connection; the manual screw rod (6) is vertically arranged; a dividing and positioning rack (3) is rotatably installed at one end of the manual screw rod (6) toward the dividing and positioning gear (2); at least one guide column (5) is installed on the lower end surface of the dividing and positioning rack (3) by means of a threaded connection; and a guide hole is formed on the fixing seat (4) and is mounted in cooperation with the guide column (5).

2. A manual simple indexing device for use on a CNC lathe according to claim 1, characterized in that: A horizontally arranged positioning pin (7) is slidably mounted on the fixing seat (4), and the end of the fixing pin is fixed to the side wall of the headstock of the lathe.

3. A manual simple indexing device for use on a CNC lathe according to claim 1, characterized in that: The number of teeth of the indexing and positioning gear (2) is an integer multiple of the number of keyways or holes uniformly distributed in the circumferential direction on the outer circle or end surface of the workpiece.

4. A manual simple indexing device for use on a CNC lathe according to claim 1, characterized in that: An auxiliary rod insertion hole is formed on a side wall of one end of the manual screw rod (6) away from the indexing positioning rack (3).

5. A manual simple indexing device for use on a CNC lathe according to claim 1, characterized in that: A circular scale plate is fixed on the outer side wall of the indexing and positioning gear (2).

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