Universal adjustable V-shaped block clamp for shaft sleeve parts
By designing an adjustable V-block fixture, the problem of the existing V-block fixtures being unable to be adjusted was solved, enabling rapid clamping and efficient machining of bushing-type parts, reducing fixture costs, and improving production efficiency and precision.
Patent Information
- Application Number
- CN202520410621.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-10
AI Technical Summary
The existing V-block fixture is not adjustable, which results in low clamping efficiency, low accuracy and increased fixture cost when machining small batches of bushing parts with various outer diameters.
A universal adjustable V-block clamp for bushing-type parts was designed. The height of the V-block is adjusted by a trapezoidal nut and guide pin structure. Combined with a guide rod and pressure plate, the operation is simplified and the clamping accuracy and efficiency are improved.
It enables rapid adjustment of V-block height, improves clamping accuracy and production efficiency, reduces fixture costs, and enhances the stability of parts processing and the utilization rate of machine tools.
Smart Images
Figure CN223889488U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of clamps for shaft sleeve class parts clamping, specifically to a kind of shaft sleeve class parts general adjustable V-block clamp. BACKGROUND
[0002] Shaft sleeve class parts are generally clamped using V-block clamps, which are fixed on the machine tool workbench to complete the machining of shaft sleeve class parts. Conventional V-block clamps have the disadvantage of fixed size and cannot be adjusted. They are generally suitable for clamping shaft sleeve class parts with multiple segments of the same outer diameter. When clamping, several clamping segments of the same size of the part often need to be placed on several V-blocks of the same specification, and the center of gravity of the part needs to be appropriately positioned. Alternatively, several V-blocks with fixed height differences are prepared for machining certain mass-produced parts. However, when facing situations that require frequent adjustment of V-blocks due to small batch sizes and various outer diameters of parts, or for other reasons, a large number of different specifications of V-blocks need to be replaced and used, increasing the cost and clamping time of the clamp, and the clamping accuracy and production efficiency of the parts cannot be guaranteed. SUMMARY
[0003] The utility model solves the technical problem of the prior art by providing a shaft sleeve class parts general adjustable V-block clamp. This clamp is easy to operate, can adjust the height of the V-block, is suitable for clamping shaft sleeve class parts, has the characteristics of quick adjustment and good universality, and can effectively improve the clamping accuracy, clamping efficiency, and production efficiency of the parts, reducing the cost of the clamp.
[0004] The utility model discloses a kind of shaft sleeve class parts general adjustable V-block clamps, including base, V-block and pressing plate, two guide rods are vertically fixed on the base, the pressing plate is horizontally installed on the upper portion of the two guide rods, the V-block is located below the pressing plate, the V-block is slidably connected with the guide rod, the upper portion of the V-block is provided with V-shaped gap, the bottom of the V-block is connected with the top of the base by guide pin, the upper portion of the guide pin is connected with the bottom of the V-block by interference fit, the lower portion of the guide pin is connected with the top of the base by clearance fit, hollow space is provided in the base and leads to front and back, trapezoidal nut is placed in the hollow space, the trapezoidal nut is threadedly connected with a trapezoidal bolt, the large end of the trapezoidal bolt abuts on the bottom of the V-block, a side top bolt is installed on the base, and the side top bolt is used to tighten the outer side wall of the trapezoidal nut.
[0005] When clamping shaft sleeve class parts, two sets of the utility model adjustable V-block clamps can be used to clamp the parts, or one set of the utility model adjustable V-block clamp and one set of the conventional V-block clamp can be used to clamp the parts.
[0006] With two sets of adjustable V-shaped block clamps clamping shaft sleeve parts as an example, the clamping process is as follows: 1) according to the distance between the clamping sections of the shaft sleeve parts, the distance between the two sets of adjustable V-shaped block clamps is determined, and the two sets of adjustable V-shaped block clamps are fixed on the machine tool workbench; 2) hoist the shaft sleeve parts, so that the clamping sections of the shaft sleeve parts fall on two V-shaped notches on the two V-shaped blocks of the two sets of adjustable V-shaped block clamps; 3) rotate the trapezoidal nut to adjust the height of the V-shaped block, and assist with machine tool alignment operation, and determine whether the height of the V-shaped block is appropriate through the alignment value, thereby completing the height adjustment of the V-shaped block, and then aligning the side generatrix or end face of the part to confirm the clamping accuracy of the part; 4) lock the side jack bolt, and then adjust the height of the pressing plate and fix the pressing plate; 5) the machine tool is processed as needed or the clamping accuracy is confirmed after secondary alignment, and then the machine tool is processed as needed. When the shaft sleeve parts are replaced, the position and height of the V-shaped block can be adjusted as needed, which is simple to operate, shortens the clamping time, and does not need to replace all V-shaped blocks.
[0007] The adjustable V-shaped block clamp of the utility model, the trapezoidal bolt and the trapezoidal nut play a main adjusting and stabilizing role on the V-shaped block. The height of the V-shaped block can be conveniently and quickly adjusted by rotating the trapezoidal nut, and the height adjustment of the V-shaped block is guided and balanced by the guide pin and the guide rod. The trapezoidal bolt has trapezoidal threads, has excellent self-locking performance, and the trapezoidal nut is tightly pressed by the side jack bolt, thereby ensuring the stability of the V-shaped block and the clamping accuracy of the part.
[0008] As preferred, the top of the base is provided with a first through hole and two first pin holes, the two first pin holes are symmetrically arranged on the two sides of the first through hole, one side of the base is provided with a second through hole, the bottom of the V-shaped block is provided with a counterbore hole and two second pin holes, the two second pin holes are symmetrically arranged on the two sides of the counterbore hole, the number of guide pins is two, the lower part of each guide pin is clearance fit in one first pin hole, the upper part of each guide pin is interference fit in one second pin hole, the trapezoidal bolt is arranged in the first through hole, the large end surface of the trapezoidal bolt is attached to the hole bottom of the counterbore hole, and the side jack bolt is arranged in the second through hole.
[0009] As preferred, the upper surface and the lower surface of the hollow space are both planes.
[0010] As preferred, the outer side wall of the trapezoidal nut is circumferentially spaced apart and provided with a plurality of operation holes for the hooking of an internal hexagonal wrench, so as to conveniently hook the internal hexagonal wrench to the trapezoidal nut, and conveniently realize the adjusting function.
[0011] As preferred, the upper part of each guide rod is threadedly connected with the pressing plate and locked by a locking nut.
[0012] As preferred, a middle part of the bottom of the pressing plate is provided with a reverse V-shaped notch to further improve the clamping reliability of the part.
[0013] Compared with the prior art, the adjustable V-shaped block clamp for shaft sleeve parts has the following advantages: the adjustable V-shaped block clamp for shaft sleeve parts is simple to operate, can realize height adjustment of the V-shaped block, is suitable for clamping of shaft sleeve parts, has the characteristics of rapid adjustment and good universality, can effectively improve the clamping precision and production efficiency of the parts, reduce the cost of the clamp, and reduce the number of clamps and space storage pressure. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a front view schematic diagram of the adjustable V-shaped block clamp in the embodiment;
[0015] Figure 2 It is an appearance schematic diagram of the base in the embodiment;
[0016] Figure 3 It is an appearance schematic diagram of the V-shaped block in the inverted state in the embodiment;
[0017] Figure 4 It is a use state schematic diagram of the adjustable V-shaped block clamp in the embodiment;
[0018] Specific reference signs in the drawings are as follows:
[0019] 1-base, 11-hollow space, 12-first through hole, 13-first pin hole, 14-second through hole, 2-V-shaped block, 21-V-shaped notch, 22-stop hole, 23-second pin hole, 3-pressing plate, 31-reverse V-shaped notch, 4-guide rod, 41-locking nut, 5-guide pin, 61-tapered nut, 62-tapered bolt, 63-operation hole, 7-side top bolt, 8-main shaft. DETAILED DESCRIPTION
[0020] The utility model will be further described in detail below in combination with the embodiment of the drawings. The components or structures not added in the utility model adopt the conventional technical means in the field.
[0021] The adjustable V-shaped block clamp for shaft sleeve parts in the embodiment is as follows: Figures 1-3As shown, including the base 1, V block 2 and the pressure plate 3, the base 1 is vertically fixed with two guide rods 4 symmetrically, the upper part of each guide rod 4 is threadedly connected with the pressure plate 3 and locked by the lock nut 41, the bottom of the pressure plate 3 is provided with a inverted V-shaped notch 31 in the middle, the V block 2 is below the pressure plate 3, the V block 2 is slidingly connected with the guide rod 4, the upper part of the V block 2 is provided with a V-shaped notch 21, the bottom of the V block 2 is connected with the top of the base 1 through the guide pin 5, the upper part of the guide pin 5 is connected with the bottom of the V block 2 in interference fit, the lower part of the guide pin 5 is connected with the top of the base 1 in clearance fit, the base 1 is provided with a hollow space 11 leading from front to back, the upper surface and the lower surface of the hollow space 11 are both flat, the trapezoidal nut 61 is placed in the hollow space 11, the trapezoidal nut 61 is threadedly connected with a trapezoidal bolt 62, the large end of the trapezoidal bolt 62 abuts against the bottom of the V block 2, the outer side wall of the trapezoidal nut 61 is provided with four operation holes 63 for hooking the inner hexagonal wrench in the circumferential direction, the base 1 is provided with a side top bolt 7, the side top bolt 7 is used to tighten the outer side wall of the trapezoidal nut 61.
[0022] Specifically, in the embodiment, the top of the base 1 is provided with a first through hole 12 and two first pin holes 13, the two first pin holes 13 are symmetrically arranged on the two sides of the first through hole 12, one side of the base 1 is provided with a second through hole 14, the bottom of the V block 2 is provided with a counterbore hole 22 and two second pin holes 23, the two second pin holes 23 are symmetrically arranged on the two sides of the counterbore hole 22, the number of guide pins 5 is two, the lower part of each guide pin 5 is clearance fit in one first pin hole 13, the upper part of each guide pin 5 is interference fit in one second pin hole 23, the trapezoidal bolt 62 is arranged in the first through hole 12, the large end face of the trapezoidal bolt 62 abuts against the hole bottom of the counterbore hole 22, the side top bolt 7 is arranged in the second through hole 14.
[0023] When clamping shaft sleeve parts, two sets of the above adjustable V block clamps can be used to clamp the parts, or one set of the above adjustable V block clamp and one set of the existing conventional V block clamp can be used to clamp the parts.
[0024] For example, two sets of the above adjustable V block clamps are used to clamp a main shaft 8, Figure 4The clamping process is shown as follows: 1) according to the distance between the clamping sections of the main shaft 8, the distance between the two sets of adjustable V-shaped block clamps is determined, and the two sets of adjustable V-shaped block clamps are fixed on the machine tool workbench; 2) hoist the main shaft 8, so that the clamping sections of the main shaft 8 fall on the two V-shaped notches 21 on the two V-shaped blocks 2 of the two sets of adjustable V-shaped block clamps; 3) hook the operating hole 63 on the outer wall of the trapezoidal nut 61 with a hexagonal wrench, rotate the trapezoidal nut 61, adjust the height of the V-shaped block 2, and assist the machine tool alignment operation, determine whether the height of the V-shaped block 2 is appropriate through the alignment value, thereby completing the height adjustment of the V-shaped block 2, and then aligning the side generatrix or end face of the main shaft 8 to confirm the clamping accuracy of the main shaft 8; 4) lock the side top bolt 7, then adjust the height of the pressing plate 3 and fix the pressing plate 3; 5) the machine tool processes as required or confirms the clamping accuracy after secondary alignment, and then processes as required. When replacing parts, the position and height of the V-shaped block 2 can be adjusted as required, which is simple to operate, shortens the clamping time, and does not need to replace all V-shaped blocks 2.
[0025] The clamping and adjustment process of the above-mentioned V-shaped block clamp is simple, the height adjustment of the V-shaped block 2 can be conveniently and quickly realized by rotating the trapezoidal nut 61, and the height adjustment of the V-shaped block 2 is guided and balanced by the guide pin 5 and the guide rod 4. The trapezoidal bolt 62 has trapezoidal threads, excellent self-locking performance, and the trapezoidal nut 61 is tightened by the side top bolt 7, which ensures the stability of the V-shaped block 2 and the clamping accuracy of the parts.
[0026] The above-mentioned V-shaped block clamp can solve the problem of low clamping efficiency of conventional V-shaped blocks when processing small-batch parts with various outer diameter sizes, and improve the production efficiency of shaft sleeve parts and the utilization rate of machine tool equipment under the premise of ensuring the stability of shaft sleeve part processing.
Claims
1. A universal adjustable V-block clamp for bushing-type parts, characterized in that, The device includes a base, a V-block, and a pressure plate. Two guide rods are symmetrically and vertically fixed on the base. The pressure plate is horizontally installed above the two guide rods. The V-block is located below the pressure plate and is slidably connected to the guide rods. The upper part of the V-block has a V-shaped notch. The bottom of the V-block is connected to the top of the base via a guide pin. The upper part of the guide pin is interference-fitted with the bottom of the V-block, and the lower part of the guide pin is clearance-fitted with the top of the base. The base has a hollow space with front and rear openings. A trapezoidal nut is placed in the hollow space. The trapezoidal nut is threadedly connected to a trapezoidal bolt. The large end of the trapezoidal bolt abuts against the bottom of the V-block. A side-top bolt is installed on the base to tighten the outer wall of the trapezoidal nut.
2. The universal adjustable V-block fixture for bushing-type parts according to claim 1, characterized in that, The base has a first through hole and two first pin holes at its top, with the two first pin holes symmetrically arranged on both sides of the first through hole. A second through hole is provided on one side of the base. The bottom of the V-block has a stop hole and two second pin holes, with the two second pin holes symmetrically arranged on both sides of the stop hole. There are two guide pins, with the lower part of each guide pin loosely fitted into one of the first pin holes and the upper part of each guide pin interference-fitted into one of the second pin holes. The trapezoidal bolt passes through the first through hole, with the large end face of the trapezoidal bolt fitting against the bottom of the stop hole. The side top bolt passes through the second through hole.
3. The universal adjustable V-block fixture for bushing-type parts according to claim 1, characterized in that, The upper and lower surfaces of the hollow space are both planes.
4. The universal adjustable V-block fixture for bushing-type parts according to claim 1, characterized in that, The outer side wall of the trapezoidal nut is provided with several operating holes spaced apart circumferentially for hooking with an internal hex wrench.
5. The universal adjustable V-block fixture for bushing-type parts according to claim 1, characterized in that, The upper part of each guide rod is threaded to the pressure plate and locked in place by a lock nut.
6. The universal adjustable V-block fixture for bushing-type parts according to claim 1, characterized in that, The bottom center of the pressure plate has an inverted V-shaped notch.