Internal spline grouping testing fixture of CV inner ring

Abstract

The utility model relates to the technical field of driving shafts, and provides an internal spline grouping testing fixture for a CV inner ring, which is characterized in that the CV inner ring is sleeved on a taper bar from right to left, a nylon pushing block is turned over to the taper bar, and the nylon pushing block of a pushing mechanism is driven by a power mechanism to push the CV inner ring leftwards, so that the CV inner ring is tightly sleeved on the taper bar, and the internal spline grouping testing fixture for the CV inner ring is realized. The nylon pushing block is soft and does not damage the CV inner ring, and the nylon pushing block can be turned over, so that manual sleeving of the CV inner ring is prevented from being interfered, and the nylon knocking block is prevented from being interfered; the nylon knocking block is driven by the power mechanism to knock the CV inner ring rightwards to loosen the CV inner ring, the pushing and knocking operation is repeated twice, and the loosening distance of the two times is recorded through the scale marks on the surface of the taper rod, so that grouping is performed; the nylon knocking block cannot damage the CV inner ring, and the power mechanism solves the problem of low efficiency of manual operation.

Description

Technical Field

[0001] This utility model relates to the field of drive shaft technology, and in particular to a CV inner ring internal spline grouping inspection tool. Background Technology

[0002] When press-fitting the inner spline of the constant velocity drive shaft (CV) retainer joint to the outer spline of the shaft, a pressing force is required. To better control this force, some customers require that the CV inner ring spline dimensions be grouped before assembly to match the corresponding shaft dimensions. The grouping fixture is typically designed as a tapered bar with increasing outer spline tooth thickness, based on the width of the CV inner ring spline tooth groove. The workpiece's inner spline is fitted onto the tapered bar, and this process is repeated twice. The final fitting position is recorded at the corresponding tapered bar scale line, and the workpiece is grouped according to the scale range required by the grouping table. Current single-tapered bar fixtures for grouping suffer from high labor intensity, low efficiency, and are prone to fixture damage, even causing workpiece impact damage. Utility Model Content

[0003] In view of this, the purpose of this utility model is to propose a CV inner ring inner spline grouping inspection fixture to solve the problems of high labor intensity, low grouping efficiency, easy damage to the inspection fixture, and even workpiece collision damage that exist in the existing inspection fixture grouping process.

[0004] To achieve the above objectives, this utility model provides an internal spline grouping inspection tool for a CV inner ring, comprising a base, a mounting block at the top left end of the base, a fixing block at the top of the mounting block, and a tapered rod inserted and fixed at the right end of the fixing block. The main body of the tapered rod is located above the base, and the diameter of the tapered rod increases from right to left. The CV inner ring is fitted onto the tapered rod from right to left. A nylon striking block for striking the CV inner ring is slidably fitted on the upper left part of the tapered rod. The nylon striking block is connected to a power mechanism to drive the striking. The power mechanism is also connected to a pushing mechanism located to the right of the nylon striking block and used to push the CV inner ring to the left. The pushing mechanism includes a nylon pushing block, which can be flipped to avoid interfering with the movement of the CV inner ring.

[0005] Preferably, the power mechanism includes a rotary motor located on the top of the platform behind the mounting block. A threaded rod is fixedly connected to the right output end of the rotary motor. A side block is rotatably connected to the right end of the threaded rod. The side block is fixed to the right end of the top of the platform. A movable block is threadedly connected to the surface of the threaded rod. The movable block is fixedly connected to the nylon striking block through a connecting post.

[0006] Preferably, the pushing mechanism includes a second movable block that is threadedly connected to a threaded rod, a second connecting post that is connected to the front side of the second movable block, and a nylon pushing block that is rotatably connected to the front side of the second connecting post via a hinge. The bottom of the nylon pushing block is provided with a groove for fitting a tapered bar.

[0007] Preferably, when the connecting post two and the nylon push block are in a horizontal state, the slot of the nylon push block is fitted over the tapered bar; when the nylon push block is flipped upwards to a vertical state, the nylon push block does not contact the tapered bar and the CV inner ring fitted on the tapered bar.

[0008] Preferably, a magnetic block is provided at the top of the second connecting column, and an iron block matching the magnetic block is provided on the back of the nylon push block. When the nylon push block is flipped to a vertical state, the iron block and the magnetic block come into contact and magnetically attract each other. A handle is provided on the front side of the nylon push block.

[0009] Preferably, the surface of the tapered bar is provided with scale lines.

[0010] Preferably, the connecting post one is detachably connected to the nylon striking block via a nut and bolt assembly.

[0011] The beneficial effects of this utility model are as follows: This utility model involves fitting the CV inner ring onto the tapered bar from right to left, flipping the nylon push block onto the tapered bar, and using a power mechanism to drive the nylon push block of the pushing mechanism to push the CV inner ring to the left, ensuring the CV inner ring is tightly fitted onto the tapered bar. The nylon push block is soft and does not damage the CV inner ring. Furthermore, the nylon push block can be flipped, thus avoiding interference with manual fitting of the CV inner ring and preventing interference with the nylon striking block. The power mechanism then drives the nylon striking block to strike the CV inner ring to the right to loosen it. This pushing and striking operation is repeated twice, and the loosening distance is recorded on the scale lines on the surface of the tapered bar for grouping. The nylon striking block does not damage the CV inner ring, and the power mechanism avoids the inefficiency of manual operation. This invention's power mechanism uses a rotary motor to drive a threaded rod to rotate, causing a threaded movable block to move, which in turn moves the nylon striking block. The pushing mechanism is connected to the nylon pushing block via a movable block that is threaded to the threaded rod, enabling the power mechanism to drive the pushing mechanism. This achieves automatic striking and pushing, greatly improving detection efficiency. The nylon pushing block and connecting column two are connected by a hinge. When the nylon pushing block is flipped to a vertical position, it is magnetically attracted to the iron block of the nylon pushing block by a magnetic block, maintaining the stability of the nylon pushing block when not being pushed. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a top view of the present invention;

[0014] Figure 2 This is a side cross-sectional view of the second movable block of this utility model;

[0015] Figure 3 This is a perspective view of the base, mounting block, fixing round block, and tapered bar of this utility model.

[0016] The diagram is marked as follows:

[0017] 1-Base, 2-Mounting block, 3-Fixing round block, 4-Tapered bar, 5-Nylon striking block, 6-Nylon pushing block, 7-Rotating motor, 8-Threaded rod, 9-Side block, 10-Moving block one, 11-Connecting column one, 12-Moving block two, 13-Connecting column two, 14-Slot, 15-Magnetic block, 16-Handle, 17-Scale line. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0019] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] like Figures 1 to 3As shown, a CV inner ring inner spline grouping inspection fixture includes a base 1. A mounting block 2 is provided at the top left end of the base 1. A fixing block 3 is provided at the top of the mounting block 2. A tapered rod 4 is inserted and fixed at the right end of the fixing block 3. The surface of the tapered rod 4 is provided with scale lines 17. The main body of the tapered rod 4 is located above the base 1. The diameter of the tapered rod 4 increases from right to left. The CV inner ring is fitted onto the tapered rod 4 from right to left. A nylon striking block 5 for striking the CV inner ring is slidably fitted on the left side of the tapered rod 4. The nylon striking block 5 is connected to a power mechanism to drive the striking. The power mechanism is also connected to a pushing mechanism located to the right of the nylon striking block 5. The pushing mechanism is used to push the CV inner ring to the left. The pushing mechanism includes a nylon pushing block 6. The nylon pushing block 6 can be flipped to avoid interfering with the movement of the CV inner ring. By fitting the inner CV ring onto the tapered bar 4 from right to left, the nylon push block 6 is flipped onto the tapered bar 4. The power mechanism drives the nylon push block 6 to push the inner CV ring to the left, ensuring the inner CV ring is tightly fitted onto the tapered bar 4. The soft nylon push block 6 does not damage the inner CV ring, and its flip-up design avoids interference with manual fitting of the inner CV ring and prevents interference with the nylon striking block 5. The power mechanism then drives the nylon striking block 5 to strike the inner CV ring to the right to loosen it. This pushing and striking operation is repeated twice, and the loosening distance is recorded on the scale line 17 on the surface of the tapered bar 4 for grouping. The nylon striking block 5 does not damage the inner CV ring, and the power mechanism avoids the inefficiency of manual operation.

[0021] The power mechanism includes a rotary motor 7 located on the top of the base 1 behind the mounting block 2. A threaded rod 8 is fixedly connected to the right output end of the rotary motor 7. A side block 9 is rotatably connected to the right end of the threaded rod 8. The side block 9 is fixed to the right end of the top of the base 1. A movable block 10 is threadedly connected to the surface of the threaded rod 8. The movable block 10 is fixedly connected to the nylon striking block 5 via a connecting post 11. The connecting post 11 and the nylon striking block 5 are detachably connected via a nut and bolt assembly. The pushing mechanism includes a movable block 2 12 threadedly connected to the threaded rod 8. A connecting post 2 13 is connected to the front of the movable block 2 12. A nylon pushing block 6 is rotatably connected to the front of the connecting post 2 13 via a hinge. The bottom of the nylon pushing block 6 has a groove 14 for engaging a tapered bar 4. The power mechanism drives the threaded rod 8 to rotate via the rotary motor 7, which causes the threaded moving block 10 to move, thereby driving the nylon striking block 5 to move. The pushing mechanism is connected to the nylon pushing block 6 via the moving block 2 12 that is threaded to the threaded rod 8, so that the power mechanism drives the pushing mechanism to move, thus realizing automatic striking and pushing, which greatly improves the detection efficiency.

[0022] When the connecting post 13 and the nylon push block 6 are in a horizontal state, the slot 14 of the nylon push block 6 is fitted over the tapered rod 4. When the nylon push block 6 is flipped upwards to a vertical state, the nylon push block 6 does not contact the tapered rod 4 or the CV inner ring fitted on the tapered rod 4. A magnetic block 15 is provided on the top of the connecting post 13, and an iron block matching the magnetic block 15 is provided on the back of the nylon push block 6. When the nylon push block 6 is flipped to a vertical state, the iron block and the magnetic block 15 are magnetically attracted together. A handle 16 is provided on the front side of the nylon push block 6. The nylon push block 6 and the connecting post 13 are connected by a hinge. When the nylon push block 6 is flipped to a vertical state, the magnetic block 15 is magnetically attracted to the iron block of the nylon push block 6, maintaining the stability of the nylon push block 6 when it is not being pushed.

[0023] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this utility model is limited to these examples; within the framework of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above, which are not provided in the details for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A CV inner ring inner spline grouping inspection fixture, comprising a base (1), characterized in that, The top left end of the pedestal (1) is provided with an installation block (2), the top of the installation block (2) is provided with a fixing round block (3), the right end of the fixing round block (3) is inserted and fixed with a tapered rod (4), the main body of the tapered rod (4) is located above the pedestal (1), the diameter of the tapered rod (4) increases from right to left, and the CV inner ring is sleeved on the tapered rod (4) from right to left; the upper left part of the tapered rod (4) is slidably fitted with a nylon striking block (5) for striking the CV inner ring, the nylon striking block (5) is connected to a power mechanism to drive the striking, the power mechanism is also connected to a pushing mechanism, the pushing mechanism is located on the right side of the nylon striking block (5) and is used to push the CV inner ring to the left, the pushing mechanism includes a nylon pushing block (6), the nylon pushing block (6) can be flipped to avoid interfering with the movement of the CV inner ring.

2. The CV inner ring inner spline grouping inspection fixture according to claim 1, characterized in that, The power mechanism includes a rotary motor (7) located on the top of the base (1) behind the mounting block (2). A threaded rod (8) is fixedly connected to the right output end of the rotary motor (7). A side block (9) is rotatably connected to the right end of the threaded rod (8). The side block (9) is fixed to the right end of the top of the base (1). A moving block (10) is threadedly connected to the surface of the threaded rod (8). The moving block (10) is fixedly connected to the nylon striking block (5) through a connecting post (11).

3. The CV inner ring inner spline grouping inspection fixture according to claim 2, characterized in that, The pushing mechanism includes a movable block two (12) threadedly connected to the threaded rod (8), a connecting column two (13) connected to the front side of the movable block two (12), and a nylon pushing block (6) rotatably connected to the front side of the connecting column two (13) via a hinge. The bottom of the nylon pushing block (6) is provided with a groove (14) that matches the tapered rod (4).

4. The CV inner ring inner spline grouping inspection fixture according to claim 3, characterized in that, When the connecting post 2 (13) and the nylon push block (6) are in a horizontal state, the slot (14) of the nylon push block (6) is fitted outside the tapered bar (4); when the nylon push block (6) is flipped upward to a vertical state, the nylon push block (6) does not contact the tapered bar (4) and the CV inner ring fitted on the tapered bar (4).

5. The CV inner ring inner spline grouping inspection fixture according to claim 4, characterized in that, The top of the connecting column 2 (13) is provided with a magnetic block (15), and the back of the nylon push block (6) is provided with an iron block that matches the magnetic block (15). When the nylon push block (6) is flipped to a vertical state, the iron block and the magnetic block (15) come into contact and magnetically attract each other. The front side of the nylon push block (6) is provided with a handle (16).

6. The CV inner ring inner spline grouping inspection fixture according to claim 1, characterized in that, The tapered bar (4) has scale lines (17) on its surface.

7. The CV inner ring inner spline grouping inspection fixture according to claim 2, characterized in that, The connecting post (11) and the nylon striking block (5) are detachably connected by a nut and bolt assembly.

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