Universal adjustable V-shaped block clamp for shaft sleeve parts
By designing adjustable V-block clamps and adjusting the V-block height using trapezoidal nuts and bolts, the problem of low clamping efficiency in the prior art is solved, and efficient and precise parts clamping and production efficiency are achieved.
Patent Information
- Application Number
- CN202510275196.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2025-04-18
AI Technical Summary
When existing V-block fixtures process small batch sleeve parts with various outer diameters, the clamping efficiency is low, and V-blocks need to be frequently adjusted, which increases cost and clamping time, and clamping accuracy and production efficiency are difficult to ensure.
A universal adjustable V-block fixture for shaft sleeve parts is designed, including base, V-block and pressure plate. The height adjustment of the V-block is achieved through the adjustment of trapezoidal nuts and trapezoidal bolts, and stability and balance are provided through guide pins and guide rods.
It realizes rapid adjustment of the height of the V-block, improves the accuracy and production efficiency of parts, reduces the cost of fixtures, reduces the number of fixtures and storage pressure, and improves the utilization rate of machine tools and equipment.
Smart Images
Figure CN119839662A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a fixture for clamping shaft sleeve parts, in particular to a universal adjustable V-block fixture for shaft sleeve parts. Background Art
[0002] Sleeve parts are generally clamped with V-block fixtures, which are fixed on the machine tool workbench to complete the processing of sleeve parts. Conventional V-block fixtures have the disadvantages of fixed size and cannot be adjusted. They are generally suitable for clamping multiple sleeve parts with the same outer diameter. When clamping, it is often necessary to place several clamping sections of the parts with the same size on several V-blocks of the same specification, and the center of gravity of the parts needs to be in an appropriate position. Or prepare several V-blocks with fixed height differences for processing certain large quantities of parts. When faced with the processing conditions of some parts with small batches and diverse outer diameters, or when there are other reasons that require frequent adjustment of V-blocks, it is necessary to replace and use a large number of V-blocks of different specifications, which increases the fixture cost and clamping time, and the clamping accuracy and production efficiency of the parts cannot be guaranteed. Summary of the invention
[0003] The technical problem to be solved by the present invention is to provide a universal adjustable V-block clamp for shaft sleeve parts in view of the deficiencies in the prior art. The clamp is simple to operate, can adjust the height of the V-block, is generally used for clamping shaft sleeve parts, has the characteristics of fast adjustment and good versatility, can effectively improve the clamping accuracy, clamping efficiency and production efficiency of the parts, and reduce the cost of the clamp.
[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a universal adjustable V-block clamp for shaft sleeve parts, comprising a base, a V-block and a pressure plate, wherein two guide rods are symmetrically and vertically fixed on the base, and the pressure plate is horizontally installed on the upper parts of the two guide rods, the V-block is arranged below the pressure plate, the V-block is slidably connected to the guide rods, the upper part of the V-block is provided with 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 connected to the bottom of the V-block by interference fit, and the lower part of the guide pin is connected to the top of the base with clearance fit, a hollow space that is connected front and back is provided in the base, 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, and 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 parts, two sets of the adjustable V-block clamps of the present invention can be used to clamp the parts, or a combination of one set of the adjustable V-block clamp of the present invention and one set of existing conventional V-block clamps can be used to clamp the parts.
[0006] Taking two sets of adjustable V-block clamps of the present invention for clamping shaft sleeve parts as an example, the clamping process is as follows: 1) Determine the distance between the two sets of adjustable V-block clamps according to the distance between the clamping sections of the shaft sleeve parts, and fix the two sets of adjustable V-block clamps 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-blocks of the two sets of adjustable V-block clamps respectively; 3) Rotate the trapezoidal nut to adjust the height of the V-block, and assist with the machine tool alignment operation, and judge whether the height of the V-block is appropriate through the alignment value, thereby completing the height adjustment of the V-block, and then align the side busbar or end face of the part to confirm the clamping accuracy of the part; 4) Tighten the side top bolts, then adjust the height of the pressure plate and fix the pressure plate; 5) The machine tool processes as needed or aligns twice to confirm the clamping accuracy and then processes as needed. When replacing shaft sleeve parts, the position and height of the V-block can be adjusted as needed. The operation is simple and the clamping time is short without replacing all the V-blocks.
[0007] The adjustable V-block clamp of the present invention has a trapezoidal bolt and a trapezoidal nut that play a major role in adjusting and stabilizing the V-block. The height of the V-block can be adjusted conveniently and quickly by rotating the trapezoidal nut, and the guide pin and the guide rod provide guidance and balance for the height adjustment of the V-block. The trapezoidal bolt has a trapezoidal thread and has excellent self-locking performance, and the trapezoidal nut is tightened by the side top bolt to ensure the stability of the V-block and the clamping accuracy of the parts.
[0008] Preferably, a first through hole and two first pin holes are provided on the top of the base, and the two first pin holes are symmetrically arranged on both sides of the first through hole. A second through hole is provided on one side of the base. A stop hole and two second pin holes are provided on the bottom of the V-block, and the two second pin holes are symmetrically arranged on both sides of the stop hole. There are two guide pins, and the lower part of each guide pin is clearance-fitted with one of the first pin holes, and the upper part of each guide pin is interference-fitted with one of the second pin holes. The trapezoidal bolt is passed through the first through hole, and the large end face of the trapezoidal bolt is fitted with the bottom of the stop hole, and the side top bolt is passed through the second through hole.
[0009] Preferably, the upper surface and the lower surface of the hollow space are both planes.
[0010] Preferably, a plurality of operating holes for hooking with an Allen wrench are arranged at intervals in the circumferential direction on the outer side wall of the trapezoidal nut, so as to facilitate hooking of the trapezoidal nut with the Allen wrench and conveniently realize the adjustment function.
[0011] Preferably, the upper portion of each guide rod is threadedly connected to the pressure plate and is locked by a locking nut.
[0012] Preferably, an inverted V-shaped notch is provided in the middle of the bottom of the pressing plate to further improve the clamping reliability of the parts.
[0013] Compared with the prior art, the present invention has the following advantages: the universal adjustable V-block fixture for sleeve parts of the present invention is easy to operate, can realize the height adjustment of the V-block, is generally applicable to the clamping of sleeve parts, has the characteristics of fast adjustment and good versatility, can effectively improve the clamping accuracy and production efficiency of parts, reduce the cost of fixtures, and reduce the number of fixtures and space storage pressure. The adjustable V-block fixture of the present invention solves the problem of low clamping efficiency of conventional V-blocks when processing small batches of parts with various outer diameters. On the premise of ensuring the processing stability of sleeve parts, the production efficiency of sleeve parts and the utilization rate of machine tools are improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a front view schematic diagram of the adjustable V-block clamp in the embodiment;
[0015] Figure 2 is a schematic diagram of the appearance of the base in the embodiment;
[0016] Figure 3 This is a schematic diagram of the appearance of the V-shaped block in an inverted state in the embodiment;
[0017] Figure 4 Schematic diagram of the use state of the adjustable V-block clamp in the embodiment;
[0018] The specific reference numerals in the figure are as follows:
[0019] 1-base, 11-hollow space, 12-first through hole, 13-first pin hole, 14-second through hole, 2-V-block, 21-V-notch, 22-stop hole, 23-second pin hole, 3-pressure plate, 31-inverted V-notch, 4-guide rod, 41-locking nut, 5-guide pin, 61-trapezoidal nut, 62-trapezoidal bolt, 63-operating hole, 7-side top bolt, 8-spindle. DETAILED DESCRIPTION
[0020] The present invention is further described in detail below in conjunction with the embodiments of the drawings. Components or structures not limited in the present invention all adopt conventional technical means in the art.
[0021] The universal adjustable V-block fixture for sleeve parts of the embodiment, such as Figure 1 to Figure 3As shown, it includes a base 1, a V-shaped block 2 and a pressure plate 3. Two guide rods 4 are symmetrically and vertically fixed on the base 1. The upper part of each guide rod 4 is threadedly connected to the pressure plate 3 and locked by a locking nut 41. An inverted V-shaped notch 31 is opened in the middle of the bottom of the pressure plate 3. The V-shaped block 2 is arranged below the pressure plate 3. The V-shaped block 2 is slidably connected to the guide rod 4. A V-shaped notch 21 is arranged on the upper part of the V-shaped block 2. The bottom of the V-shaped block 2 is connected to the top of the base 1 through a guide pin 5. The upper part of the guide pin 5 is connected to the bottom of the V-shaped block 2 by interference fit. The lower part is connected with the top clearance of the base 1, and a hollow space 11 communicating front and back is provided in the base 1. The upper surface and the lower surface of the hollow space 11 are both flat. A trapezoidal nut 61 is placed in the hollow space 11, and 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. Four operating holes 63 for hooking a hexagonal wrench are arranged at circumferential intervals on the outer wall of the trapezoidal nut 61. A side top bolt 7 is installed on the base 1, and the side top bolt 7 is used to tighten the outer wall of the trapezoidal nut 61.
[0022] Specifically, in this embodiment, a first through hole 12 and two first pin holes 13 are provided on the top of the base 1, and the two first pin holes 13 are symmetrically arranged on both sides of the first through hole 12. A second through hole 14 is provided on one side of the base 1. A stop hole 22 and two second pin holes 23 are provided on the bottom of the V-block 2, and the two second pin holes 23 are symmetrically arranged on both sides of the stop hole 22. There are two guide pins 5, and the lower part of each guide pin 5 is clearance-fitted with a first pin hole 13, and the upper part of each guide pin 5 is interference-fitted with a second pin hole 23. The trapezoidal bolt 62 is penetrated through the first through hole 12, and the large end face of the trapezoidal bolt 62 is fitted with the bottom of the stop hole 22. The side top bolt 7 is penetrated through the second through hole 14.
[0023] When clamping shaft sleeve parts, two sets of the above-mentioned adjustable V-block clamps can be used to clamp the parts, or a combination of one set of the above-mentioned adjustable V-block clamp and one set of existing conventional V-block clamps can be used to clamp the parts.
[0024] Take two sets of the above-mentioned adjustable V-block fixtures to clamp a spindle 8 as an example. Figure 4As shown, the clamping process is: 1) according to the distance between the clamping sections of the spindle 8, determine the distance between the two sets of adjustable V-block clamps, and fix the two sets of adjustable V-block clamps on the machine tool workbench; 2) hoist the spindle 8 so that the clamping sections of the spindle 8 fall on the two V-shaped notches 21 on the two V-blocks 2 of the two sets of adjustable V-block clamps respectively; 3) use an inner hexagonal wrench to hook the operating hole 63 on the outer wall of the trapezoidal nut 61, rotate the trapezoidal nut 61, adjust the height of the V-block 2, and assist with the machine tool alignment operation, judge whether the height of the V-block 2 is appropriate through the alignment value, thereby completing the height adjustment of the V-block 2, and then align the side busbar or end face of the spindle 8 to confirm the clamping accuracy of the spindle 8; 4) tighten the side top bolt 7, then adjust the height of the pressure plate 3 and fix the pressure plate 3; 5) the machine tool processes as needed or aligns the clamping accuracy for the second time and then processes as needed. When replacing parts, the position and height of the V-block 2 can be adjusted as needed. The operation is simple and the clamping time is short without replacing all the V-blocks 2.
[0025] The clamping and adjustment process of the V-block fixture is simple. The height adjustment of the V-block 2 can be easily and quickly achieved by rotating the trapezoidal nut 61, and the guide pin 5 and the guide rod 4 provide guidance and balance for the height adjustment of the V-block 2. The trapezoidal bolt 62 has a trapezoidal thread and excellent self-locking performance, and the trapezoidal nut 61 is tightened by the side top bolt 7 to ensure the stability of the V-block 2 and the clamping accuracy of the parts.
[0026] The above-mentioned V-block fixture can solve the problem of low clamping efficiency of conventional V-blocks when processing small batch parts with various outer diameter sizes. While ensuring the processing stability of sleeve parts, it improves the production efficiency of sleeve parts and the utilization rate of machine tools.
Claims
1. A universal adjustable V-block fixture for sleeve parts, characterized in that: The invention comprises a base, a V-shaped block and a pressure plate, wherein two guide rods are symmetrically and vertically fixed on the base, the pressure plate is horizontally installed on the upper parts of the two guide rods, the V-shaped block is arranged below the pressure plate, the V-shaped block is slidably connected to the guide rods, a V-shaped notch is arranged on the upper part of the V-shaped block, the bottom of the V-shaped block is connected to the top of the base via a guide pin, the upper part of the guide pin is connected to the bottom of the V-shaped block by interference fit, the lower part of the guide pin is connected to the top of the base by clearance fit, a hollow space which is connected front and back is provided in the base, 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-shaped 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.
2. According to claim 1, a universal adjustable V-block fixture for sleeve parts, characterized in that: A first through hole and two first pin holes are provided on the top of the base, and the two first pin holes are symmetrically arranged on both sides of the first through hole. A second through hole is provided on one side of the base, and a stop hole and two second pin holes are provided on the bottom of the V-block, and the two second pin holes are symmetrically arranged on both sides of the stop hole. There are two guide pins, and the lower part of each guide pin is clearance-fitted with one of the first pin holes, and the upper part of each guide pin is interference-fitted with one of the second pin holes. The trapezoidal bolt is passed through the first through hole, and the large end face of the trapezoidal bolt is fitted with the bottom of the stop hole, and the side top bolt is passed through the second through hole.
3. According to claim 1, a universal adjustable V-block fixture for sleeve parts, characterized in that: The upper surface and the lower surface of the hollow space are both planes.
4. According to claim 1, a universal adjustable V-block fixture for sleeve parts, characterized in that: A plurality of operating holes for hooking a hexagonal wrench are arranged at intervals in the circumferential direction of the outer side wall of the trapezoidal nut.
5. According to claim 1, a universal adjustable V-block fixture for sleeve parts, characterized in that: The upper portion of each guide rod is threadedly connected to the pressure plate and is locked by a locking nut.
6. A universal adjustable V-block fixture for sleeve parts according to claim 1, characterized in that: An inverted V-shaped notch is provided in the middle of the bottom of the pressing plate.