Universal drilling clamp for shaft teeth
By designing a universal drilling fixture for shafts and gears, high-precision positioning of workpieces is achieved using positioning centers and support components. This solves the accuracy and cost problems of traditional shaft workpiece drilling when high-precision relative angle requirements are met, and satisfies the relative angle requirements of external spline grooves and oil holes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-07
- Publication Date
- 2026-04-10
AI Technical Summary
When drilling traditional shaft-type workpieces, the automatic tooth-finding device has poor accuracy and high cost when high-precision relative angle requirements are required, and cannot meet the relative angle requirements for machining external spline grooves and oil holes.
Design a general-purpose drilling fixture for shafts and gears, including components such as a left support, a right V-shaped positioning block, a positioning seat, a positioning spring, and a positioning center. High-precision positioning of the workpiece is achieved by adjusting the nut and the support spring, and the initial angle is determined by inserting the positioning center into the external spline groove.
It achieves high-precision positioning of the workpiece, meets the relative angle requirements of the external spline groove and the oil hole, reduces costs and improves machining accuracy.
Smart Images
Figure CN224102391U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of shaft tooth class general drilling fixture, belong to automobile gear machining equipment technical field. BACKGROUND
[0002] In the machining of automobile gear, shaft workpiece drilling is a very common process in the machining of automobile gear, however, the traditional sense of shaft workpiece drilling needs numerical control machine tool to configure numerical control inductive probe alone to carry out tooth angle positioning when aiming at spline groove and the relatively high angle requirement of drilling. This automatic tooth searching device has the disadvantages of high procurement cost, poor tooth searching precision when encountering defective tooth or thin tooth, affecting the relative position precision of drilling and spline groove, etc., and cannot meet the machining of shaft workpiece with relative angle requirement of outer spline tooth groove and oil hole.
[0003] By increasing inductive probe, automatic tooth searching function can also be realized, but the following disadvantages exist:
[0004] (1) The working principle of inductive probe is to automatically calculate the average value of N sets of tooth pitch by inducting N sets of teeth, and to determine the initial angle position of machining the first hole according to the calculated value. When defective tooth or thin tooth exists in the selected N sets of teeth, the calculated value will be distorted, causing deviation of the initial angle position of machining the first tooth. When machining is required to have relatively high relative angle between spline groove and drilling, this kind of tooth positioning method is unreliable.
[0005] (2) The cost of separately configuring numerical control inductive probe and supporting system for machine tool is too high. INVENTION CONTENTS
[0006] The utility model aims to provide a kind of shaft tooth class general drilling fixture, which can realize high-precision positioning of workpiece, meet the machining of shaft workpiece with relative angle requirement of outer spline tooth groove and oil hole, and solve the problems in the background art.
[0007] The technical scheme of the utility model is as follows:
[0008] A kind of shaft tooth class general drilling fixture, comprising left support, right V-shaped positioning block, positioning seat, positioning spring, positioning center, right rear strut, adjusting nut, right support spring, double-headed stud, base and right pressing plate, the base is installed on machine tool, the left support and right V-shaped positioning block matched with workpiece are provided on the base, the right rear strut and double-headed stud are respectively tightened on the base, one side of the right pressing plate is in close contact with the right rear strut, and the other side is in close contact with the workpiece, the adjusting nut and right support spring matched with the right pressing plate are provided on the double-headed stud, the positioning seat is fixed on the base, and the positioning spring and positioning center are provided in the positioning seat.
[0009] Further, the positioning seat is provided with a groove matched with the positioning spring and the positioning tip, and the positioning spring and the positioning tip are arranged in the groove of the positioning seat.
[0010] Further, the positioning tip is matched with the workpiece.
[0011] Further, the left support and the right V-shaped positioning block are installed on the base through the inner hexagonal stud and the cylindrical pin.
[0012] Further, the right rear support is fixed on the base through the fixing nut.
[0013] By adjusting the nut to drive the right pressing plate to press the workpiece, the left support and the right V-shaped positioning block are used to position the workpiece, and the left support and the right V-shaped positioning block can be adjusted according to different workpieces to ensure that various shaft workpieces are placed horizontally.
[0014] The utility model discloses a positioning device for machining workpiece, which comprises a base, a left support, a right V-shaped positioning block, a positioning seat, a positioning spring, a positioning tip, a right rear support, an adjusting nut, a flat washer, a right support spring, a double-headed stud, an inner hexagonal stud and a cylindrical pin. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is the front view of the utility model;
[0016] Figure 2 It is the side view of the utility model;
[0017] Figure 3 It is the top view of the utility model;
[0018] In the drawing: left support 1, right V-shaped positioning block 2, positioning seat 3, positioning spring 4, positioning tip 5, right rear support 6, adjusting nut 7, flat washer 8, right support spring 9, double-headed stud 10, inner hexagonal stud 11, base 12, right pressing plate 13, cylindrical pin 14, fixing nut 15, workpiece 16, machining hole 17. DETAILED DESCRIPTION
[0019] The utility model will be further described through examples in combination with the drawings.
[0020] Refer to the attached Figure 1 , 23, a shaft tooth class universal drilling fixture, containing left support 1, right V type positioning block 2, positioning seat 3, positioning spring 4, positioning center 5, right rear strut 6, adjusting nut 7, right support spring 9, stud bolt 10, base 12 and right pressing plate 13, base 12 is installed on the machine tool, base 12 is provided with left support 1 and right V type positioning block 2 matched with workpiece, right rear strut 6 and stud bolt 10 are respectively screwed on base 12, right pressing plate 13 one side and right rear strut 6 are pasted, the other side and workpiece are pasted, stud bolt 10 is provided with adjusting nut 7 and right support spring 9 matched with right pressing plate 13, positioning seat 3 is fixed on base 12, positioning seat 3 is provided with positioning spring 4 and positioning center 5.
[0021] In this embodiment, the fixture, including left support 1, right V type positioning block 2, positioning seat 3, positioning spring 4, positioning center 5, right rear strut 6, adjusting nut 7, flat washer 8, right support spring 9, stud bolt 10, inner hexagonal stud 11, base 12, right pressing plate 13, cylindrical pin 14 and fixing nut 15, base 12 is installed on the machine tool, left support 1 and right V type positioning block 2 are installed on the end face of base 12 by inner hexagonal stud 11 and cylindrical pin 14 and are pasted. Right rear strut 6 is screwed on base 12, and is then tightened by fixing nut 15. Stud bolt 10 is screwed on base 12, right pressing plate 13 left side and right rear strut 6 are pasted, right side and processing workpiece are pasted, and the pressing force is adjusted by adjusting nut 7 and right support spring 9. Positioning seat 3 is installed on base 12 by nut, positioning seat 3 is provided with groove, positioning spring 4 and positioning center 5 are arranged in the groove of positioning seat 3.
[0022] The working principle is as follows:
[0023] By adjusting nut 7, right pressing plate 13 is pressed tightly, and by adjusting nut 7, right pressing plate 13 is loosened. The workpiece is positioned by left support 1 and right V type positioning block 2, and left support 1 and right V type positioning block 2 can be adjusted according to different workpieces to ensure that various shaft workpieces are placed horizontally. Positioning center 5 is inserted into the outer spline tooth groove to realize the positioning of the initial angle position of the first machining hole of the workpiece.
Claims
1. A universal pinion type hole jig characterized by: The utility model relates to a left support (1), right V-shaped positioning block (2), positioning seat (3), positioning spring (4), positioning center (5), right rear support column (6), adjusting nut (7), right support spring (9), stud bolt (10), base (12) and right pressing plate (13) are provided with left support (1) and right V-shaped positioning block (2) with the cooperation of workpiece on base (12), right rear support column (6) and stud bolt (10) are respectively screwed on base (12), right pressing plate (13) one side and right rear support column (6) are pasted, the other side and workpiece are pasted, and adjusting nut (7) and right support spring (9) are provided with right pressing plate (13) cooperation on stud bolt (10), and positioning seat (3) is fixed on base (12), and positioning seat (3) is equipped with positioning spring (4) and positioning center (5) in.
2. A universal jig for drilling shafts and teeth according to claim 1, characterized in that: The positioning seat (3) is provided with a groove matched with the positioning spring (4) and the positioning center (5), and the positioning spring (4) and the positioning center (5) are arranged in the groove of the positioning seat (3).
3. A universal jig for drilling shafts and teeth according to claim 1 or 2, characterized in that: The positioning center (5) is matched with the workpiece.
4. The universal jig for drilling of shaft tooth according to claim 1, characterized in that: The left support (1) and the right V-shaped positioning block (2) are installed on the base (12) through the inner hexagonal stud (11) and the cylindrical pin (14).
5. The universal jig for drilling of shaft tooth according to claim 1, characterized in that: The right rear support column (6) is fixed on the base (12) through the fixing nut (15).