Angle fixing jig

Abstract

The utility model relates to the field of spare part processing, specifically disclose a kind of spare part processing fixture. Including base, compression unit and positioning unit, compression unit includes single-arm pressboard, single-arm pressboard is located on base and can move to the side close to base;Positioning unit includes locating seat and locating rod, base is equipped with mounting groove, positioning unit is equipped in the lateral direction of mounting groove, and the projection of locating rod is opposite to mounting groove. The angle-determining processing fixture in the utility model solves the problem that the structure needs greater strength to determine the inclination angle, and the replacement efficiency is low and the cost is high.

Description

Technical Field

[0001] This utility model relates to the field of parts processing, specifically to a parts processing fixture. Background Technology

[0002] Some workpieces, such as differential reduction input shafts and camshafts, require multiple holes for positioning, lubrication, or installation of other components. The angles between some of these holes also have specific requirements, necessitating high precision in angle measurement during machining. Taking a differential reduction input shaft as an example, it features straight oil holes, oblique oil holes, and spiral oil grooves. The angles between the axial projections of the straight and oblique oil holes and the spiral oil grooves are subject to requirements. Therefore, when drilling the straight and oblique oil holes, the workpiece must be fixed at a specific angle to ensure that the angle between the workpiece and the part to be drilled on the drilling equipment meets the requirements.

[0003] Commonly used fixed fixtures, such as the fixed-angle rotating fixture disclosed in application number CN201820411324.8, include a base with an inclined surface and a rotating disk rotatably mounted on the inclined surface of the base. The rotating disk is provided with a clamping device for clamping the workpiece, and the rotating disk is provided with a plurality of positioning holes arranged in a circumferential array. It also includes a positioning device mounted on the base for positioning the rotating disk. The positioning device includes a pin that mates with the positioning hole, and the pin is connected to the base through a positioning seat.

[0004] The tilt angle of the above-mentioned tooling is provided by the base. The rotating disk and the clamping device are both located on the base, and the workpiece is also installed on the base through the clamping device. Therefore, the base needs to withstand a large pressure. Thus, the base that provides the tilt angle needs to maintain a large strength. When processing another workpiece, due to the change in tilt angle, the rotating disk, clamping device, etc., all need to be removed from the original base before a new base can be installed. The replacement efficiency is low and the replacement cost is high. Utility Model Content

[0005] The present invention aims to provide a fixed-angle machining fixture to solve the problems of the structure requiring greater strength and low replacement efficiency and high cost when determining the tilt angle.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a fixed-angle machining fixture, comprising a base, a clamping unit and a positioning unit, wherein the clamping unit comprises a single-arm pressure plate, the single-arm pressure plate is disposed on the base and can move toward the side closer to the base; the positioning unit comprises a positioning seat and a positioning rod, wherein the base is provided with a mounting groove, the positioning unit is disposed to the side of the mounting groove, and the projection of the positioning rod is opposite to the mounting groove.

[0007] The beneficial effects of this plan are: 1. The positioning rod in this solution is used to fit with the hole on the workpiece to fix the workpiece. In actual implementation, the angle of the positioning rod is determined according to the angle between the hole to be processed on the workpiece and the axial projection of the existing hole or groove on the workpiece: that is, when the positioning rod is inserted into the existing hole or groove on the workpiece, the position of the hole to be processed is directly opposite the drilling equipment, thereby realizing the fixed angle processing of the workpiece.

[0008] 2. In this solution, the workpiece is installed in the mounting slot and pressed by a single-arm pressure plate. Therefore, the workpiece is better fixed in this solution. After the positioning rod is inserted into the existing hole or slot on the workpiece, it can not only achieve fixed-angle drilling but also position the workpiece to prevent it from rotating during drilling and other processing, thus improving drilling accuracy.

[0009] Furthermore, the base is provided with several angle holes, the positioning seat is provided with at least two positioning holes, and at least two positioning holes can correspond one-to-one with at least two of all angle positioning holes. The positioning unit also includes an angle fixing rod, which passes through the positioning hole and is inserted into the aligned angle hole.

[0010] The beneficial effects of this solution are as follows: This solution has several angle holes. Before processing, the angle of the positioning seat can be determined according to the angle of the positioning rod. Then, the angle fixing rod can be passed through the aligned positioning holes and angle holes to quickly change and determine the angle of the positioning seat, thereby adapting to workpieces with different processing angle requirements and making it more adaptable.

[0011] Furthermore, the upper cross-section of the mounting groove is V-shaped.

[0012] The beneficial effects of this solution are as follows: When processing workpieces with smaller diameters, the workpiece can be further inserted into the mounting groove to abut against the inverted V-shaped sidewall. When the single-arm pressure plate clamps the workpiece, it will not slide radially, thus improving the workpiece's fixation effect. Simultaneously, the V-shaped surface automatically centers the workpiece during fixation, ensuring its center is directly aligned with the single-arm pressure plate, further enhancing the workpiece's fixation effectiveness.

[0013] Furthermore, a workpiece positioning block is provided in the mounting groove, and a clamping groove is provided on the workpiece positioning block, with a limit protrusion fixed in the clamping groove.

[0014] The beneficial effects of this solution are as follows: Some workpieces, especially shaft parts such as differential input shafts and camshafts, have annular grooves on the parts opposite to the single-arm pressure plate. The limiting protrusion in this solution can be engaged in the groove on the workpiece after it is placed in the mounting groove, thereby preventing the workpiece from sliding axially and further improving the fixing effect on the workpiece.

[0015] Furthermore, the workpiece positioning block is detachably connected to the base.

[0016] The beneficial effects of this solution are: the workpiece positioning block is installed more stably and has a better limiting effect on the workpiece.

[0017] Furthermore, the end of the positioning rod near the mounting groove is frustum-shaped.

[0018] The beneficial effect of this solution is that the positioning rod in this solution can adapt to holes of different diameters, thus having better adaptability.

[0019] Furthermore, the clamping unit also includes a clamping power component, which is connected to the single-arm pressure plate and used to drive the single-arm pressure plate to move.

[0020] The beneficial effects of this solution are: by using the clamping power component, the single-arm pressure plate can be moved quickly and more conveniently, thereby quickly fixing the workpiece.

[0021] Furthermore, the clamping unit also includes a pull rod, one end of which is connected to the clamping power component, and the other end is rotatably engaged with the single-arm pressure plate.

[0022] The beneficial effect of this solution is that when taking out and putting in workpieces, the single-arm pressure plate can be rotated to the side of the workpiece, which makes it easier to take out and put in the workpiece. Attached Figure Description

[0023] Figure 1 This is a front view of Embodiment 1 of the present invention; Figure 2 This is a front view of Embodiment 2 of the present invention. Detailed Implementation

[0024] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: base 1, pull rod 11, screw 12, mounting groove 13, angle hole 14, single arm pressure plate 2, pressure block 21, positioning seat 3, limiting channel 31, positioning rod 4, limiting plate 41, workpiece positioning block 5, and workpiece 6.

[0025] Example 1 Example 1 is basically as follows Figure 1As shown, a fixed-angle machining fixture includes a base 1, a clamping unit, and a positioning unit. The clamping unit includes a single-arm clamping plate 2, a pull rod 11, and a clamping power component. The clamping power component is a hydraulic cylinder, with its push rod facing upwards, mounted on the base 1. The pull rod 11 is vertically positioned, and its lower end is connected to the push rod of the clamping power component via a flange. The single-arm clamping plate 2 is horizontally positioned, with the upper end of the pull rod 11 vertically penetrating the left end of the single-arm clamping plate 2. The single-arm clamping plate 2 and the pull rod 11 are fitted with a small clearance, allowing the single-arm clamping plate 2 to rotate relative to the pull rod 11. A screw 12 is threaded onto the upper end of the pull rod 11, and the diameter of the screw head is larger than the diameter of the pull rod 11, limiting the position of the single-arm clamping plate 2 through the screw head. A pressure block 21 is bolted to the right end of the single-arm clamping plate 2, and the pressure block 21 is located below the single-arm clamping plate 2.

[0026] The base 1 has an upward-facing mounting groove 13 located below the pressure block 21, with the upper part of the mounting groove 13 being a 90° V-shaped surface. A workpiece positioning block 5 is located within the mounting groove 13, connected to the base 1 by screws. The workpiece positioning block 5 has an upward-facing clamping groove, with an integrally formed limiting protrusion within the clamping groove. Specifically, the shape and size of the limiting protrusion are determined based on the existing groove on the workpiece 6, ensuring that after the workpiece 6 is placed in the mounting groove 13, the limiting protrusion engages with the groove on the workpiece 6, positioning the workpiece 6 axially. This prevents axial displacement of the workpiece 6 during processing, enabling better positioning of shaft-type parts.

[0027] The positioning unit is located on the front side of the mounting groove 13. The positioning unit includes a positioning seat 3 and a positioning rod 4. The positioning seat 3 is tilted and mounted on the base 1 with screws. The positioning rod 4 has an integrally formed limiting plate 41. The positioning seat 3 has a limiting channel 31. The lower end of the positioning rod 4 is located in the limiting channel 31, and the limiting plate 41 abuts against the positioning seat 3. The upper end of the positioning rod 4 is higher than the positioning seat 3 and located on the front side of the mounting groove 13 and the workpiece positioning block 5. The upper end of the positioning rod 4 is a frustum-shaped cone with an upper diameter smaller than the lower diameter. When positioning the workpiece 6, the existing hole on the workpiece 6 is opposite to the positioning rod 4, and the upper end of the positioning rod 4 is inserted into the hole (hereinafter referred to as the "reference hole") on the workpiece 6. Therefore, in actual implementation, the tilt angle of the positioning rod 4 is determined according to the included angle between the reference holes on the workpiece 6, so that after the positioning rod 4 is inserted into the reference hole on the workpiece 6, the part of the workpiece 6 to be processed is directly opposite the drill bit of the drilling equipment.

[0028] The specific implementation process is as follows: In this scheme, when machining workpiece 6, the clamping power component releases the single-arm pressure plate 2. First, the right end of the single-arm pressure plate 2 is rotated to the side of the clamping groove. Then, workpiece 6 is placed into the clamping groove, and the positioning rod 4 is inserted into the reference hole on workpiece 6 to position it. Then, the single-arm pressure plate 2 is rotated above workpiece 6, and the clamping power component is activated again, causing the single-arm pressure plate 2 to slide downwards and press against workpiece 6 to fix it. After drilling is completed, the push rod of the clamping power component is first controlled to extend upwards, causing the single-arm pressure plate 2 to release workpiece 6. Then, the single-arm pressure plate 2 is rotated to the side of workpiece 6, and the machined workpiece 6 can be removed, completing the machining of one workpiece 6.

[0029] When different workpieces 6 need to be clamped, the inclination angle of the upper limit channel 31 of the positioning seat 3 is determined according to the angle between the reference hole and the hole to be processed. After the lower end of the positioning rod 4 is inserted into the limit channel 31, the positioning rod 4 extends along the reference hole direction of the workpiece 6. Then, before processing, a new positioning seat 3 is installed on the base 1 to change the angle of the positioning rod 4, so that it can be used to position another type of workpiece 6. At the same time, when the position, size and shape of the groove on different workpieces 6 are different, the workpiece positioning block 5 that matches the limit protrusion can be replaced.

[0030] Example 2 Based on Example 1, such as Figure 2 As shown, the positioning seat 3 in this embodiment is provided with four positioning holes, and the base 1 is provided with several angle holes 14. In this embodiment, the angle holes 14 are threaded holes, so that when the positioning seat 3 adjusts the angle according to the reference hole on the workpiece 6 to be processed, there is still a high probability that at least two angle holes 14 can correspond one-to-one with at least two positioning holes. At this time, it is not necessary to replace the positioning seat 3 to keep the positioning rod 4 at an angle relative to the reference hole on the workpiece 6, thereby improving the adaptability of the positioning seat 3.

[0031] The positioning unit in this embodiment also includes at least two angle fixing rods. Specifically, the angle positioning rod 4 is a bolt. After the positioning hole and the angle hole 14 are aligned, the angle fixing rod is passed through the positioning hole and screwed into the angle hole 14 to quickly fix the positioning seat 3. Apart from this, the other operations in this embodiment are the same as in embodiment 1, and will not be described again in this embodiment.

[0032] The above are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A fixed-angle machining fixture, characterized in that: The device includes a base, a clamping unit, and a positioning unit. The clamping unit includes a single-arm clamping plate, which is mounted on the base and can move towards the side of the base. The positioning unit includes a positioning seat and a positioning rod. The base has a mounting groove, and the positioning unit is located to the side of the mounting groove, with the projection of the positioning rod opposite to the mounting groove.

2. The fixed-angle machining fixture according to claim 1, characterized in that: The base is provided with several angle holes, and the positioning seat is provided with at least two positioning holes, and each of the at least two positioning holes can correspond one-to-one with at least two of the angle positioning holes. The positioning unit also includes an angle fixing rod, which passes through the positioning hole and is inserted into the aligned angle hole.

3. The fixed-angle machining fixture according to claim 2, characterized in that: The upper part of the mounting slot is V-shaped.

4. A fixed-angle machining fixture according to claim 3, characterized in that: The mounting slot is equipped with a workpiece positioning block, and the workpiece positioning block is equipped with a clamping groove, in which a limit protrusion is fixed.

5. A fixed-angle machining fixture according to claim 3, characterized in that: The workpiece positioning block is detachably connected to the base.

6. A fixed-angle machining fixture according to claim 1, characterized in that: The end of the positioning rod near the mounting slot is frustum-shaped.

7. A fixed-angle machining fixture according to claim 1, characterized in that: The clamping unit also includes a clamping power component, which is connected to the single-arm pressure plate and is used to push the single-arm pressure plate to move.

8. A fixed-angle machining fixture according to claim 7, characterized in that: The clamping unit also includes a pull rod, one end of which is connected to the clamping power component, and the other end is rotatably engaged with the single-arm pressure plate.

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