Crankshaft measuring clamp

Abstract

The utility model belongs to the technical field of workpiece measurement, and discloses a crankshaft measurement clamp which comprises a base, an adjusting mechanism is arranged on the inner wall of the top end of the base, the adjusting mechanism comprises a moving block, a plurality of clamping grooves are formed in the inner wall of the moving block, a threaded rod is rotationally connected to the inner wall of the bottom end of the base, and the threaded rod is in threaded connection with the moving block. The inner wall of the moving block is slidably connected with a moving rod, and the inner wall of the moving rod is elastically connected with a sliding block through a spring A. Limiting of the movable rod can be relieved by pressing the shifting block, the movable rod can be rapidly moved to the rough position, then the position of the movable rod can be more accurately adjusted by rotating the threaded rod, the distance between the movable rod and the fixed rod is adjusted, and therefore crankshaft bodies of different lengths can be clamped and fixed, the position of the clamp does not need to be adjusted by unscrewing a bolt firstly, and the machining efficiency is improved. And the position of the clamp does not need to be adjusted by rotating the threaded rod for a long time, so that more time and labor are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of workpiece measurement, in particular to a clamp for crankshaft measurement. Background Art

[0002] A crankshaft measuring fixture is a tool or device used to fix and support a crankshaft for precise measurement. This fixture usually consists of a fixture bed, a fixture clamping device, support rollers and other components, which can ensure that the crankshaft remains in a stable and correct position during the measurement process.

[0003] For example, the utility model with publication number CN217167778U discloses a crankshaft measuring fixture, including a base, a fixing component arranged on the base, and a clamping component arranged opposite to the fixing component. The fixing component includes a fixing rod arranged on the base and an abutting portion arranged at the upper end of the fixing rod. The clamping component includes a vertical rod, an adjusting block, an elastic member, and a plug-in portion. The adjusting block is arranged on the vertical rod. The present application has the effect of effectively improving the crankshaft detection efficiency.

[0004] Although the above device can adjust the distance between the vertical rod and the fixed rod and clamp and fix crankshafts of different lengths, during the adjustment process, it is necessary to first loosen the adjusting bolt and then move the position of the vertical rod for adjustment. When it is adjusted to a suitable position, it is necessary to turn the adjusting bolt again and tighten it to fix the position of the vertical rod. This process is relatively cumbersome, time-consuming and labor-intensive. Therefore, a crankshaft measuring fixture is proposed to address the above problems. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a crankshaft measurement fixture, which solves the problem of troublesome adjustment of the fixture position in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a crankshaft measuring fixture, comprising a base, an inner wall at the top end of the base is provided with an adjustment mechanism, the adjustment mechanism comprises a moving block, the inner wall of the moving block is provided with multiple groups of card grooves, the inner wall of the bottom end of the base is rotatably connected with a threaded rod, the inner wall of the moving block is slidably connected with a moving rod, the inner wall of the moving rod is elastically connected with a slider through a spring A, the left outer wall of the slider is slidably connected with a shift block, the bottom outer wall of the slider is fixedly connected with a connecting rod, the bottom outer wall of the connecting rod is fixedly connected with a card block, the right outer wall of the moving rod is fixedly connected with a stopper, the outer wall of the stopper contacts with the crankshaft body, and the right outer wall of the base is provided with a fixing mechanism.

[0007] Preferably, the moving block is slidably connected to the left inner wall of the base, the threaded rod is threadedly connected to the inner wall of the moving block, and the shifting block penetrates and is slidably connected to the inner wall of the moving rod.

[0008] Preferably, one end of the spring A is fixedly connected to the outer wall of the slider, and the other end of the spring A is fixedly connected to the inner wall of the moving rod.

[0009] Preferably, the clamping block is slidably connected to the inner wall of the moving rod, and the clamping block is clamped in the clamping slot.

[0010] Preferably, the fixing mechanism includes a fixing rod, the inner wall of the fixing rod is provided with multiple groups of grooves, the inner wall of the fixing rod is rotatably connected to a rocker, the left outer wall of the rocker is fixedly connected to an insert block, and the inner wall of the rocker is elastically connected to a protrusion via a spring B.

[0011] Preferably, the fixing rod is fixedly connected to the right outer wall of the base, and the insert block is in contact with the right inner wall of the crankshaft body.

[0012] Preferably, one end of the spring B is fixedly connected to the inner wall of the rocker, and the other end of the spring B is fixedly connected to the outer wall of the protrusion. The protrusion is slidably connected to the inner wall of the rocker, and the protrusion is engaged with the groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model can release the limit of the moving rod by pressing the shift block, quickly move the moving rod to an approximate position, and then more accurately adjust the position of the moving rod by rotating the threaded rod, and adjust the distance between the moving rod and the fixed rod, so that crankshaft bodies of different lengths can be clamped and fixed. There is no need to loosen the bolts to adjust the position of the clamp and then tighten the clamp to fix it, and there is no need to rotate the threaded rod for a long time to adjust the position of the clamp, which saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure after the base, the moving block section and the moving rod section of the utility model are exploded;

[0017] Figure 3 It is a schematic diagram of the structure of the utility model after the fixed rod section and the rocker section are exploded;

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the crankshaft body of the utility model.

[0019] In the figure: 1. base; 2. adjusting mechanism; 201. moving rod; 202. spring A; 203. slider; 204. connecting rod; 205. block; 206. shift block; 207. moving block; 208. threaded rod; 209. slot; 210. stopper; 3. fixing mechanism; 301. fixing rod; 302. groove; 303. protrusion; 304. plug-in block; 305. rocker; 306. spring B; 4. crankshaft body. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figures 1 to 4 As shown, the utility model provides a clamp for measuring a crankshaft, comprising a base 1, an adjusting mechanism 2 is arranged on the top inner wall of the base 1, the adjusting mechanism 2 comprises a moving block 207, a plurality of card slots 209 are arranged on the inner wall of the moving block 207, a threaded rod 208 is rotatably connected to the inner wall of the bottom end of the base 1, a moving rod 201 is slidably connected to the inner wall of the moving block 207, a slider 203 is elastically connected to the inner wall of the moving rod 201 through a spring A202, a shifting block 206 is slidably connected to the left outer wall of the slider 203, a connecting rod 204 is fixedly connected to the bottom outer wall of the slider 203, a card block 205 is fixedly connected to the bottom outer wall of the connecting rod 204, a stopper 210 is fixedly connected to the right outer wall of the moving rod 201, the outer wall of the stopper 210 contacts the crankshaft body 4, and a fixing mechanism 3 is arranged on the right outer wall of the base 1.

[0022] The above scheme is adopted: the device can be placed on a workbench for use through the base 1; the adjusting mechanism 2 can move laterally in the left inner wall of the base 1 to change the distance between it and the fixing mechanism 3 to adapt to the crankshaft body 4 of different lengths; the threaded rod 208 passes through the left outer wall of the base 1, and the moving block 207 can be driven to move laterally in the inner wall of the base 1 by rotating the threaded rod 208; the moving rod 201 can move laterally in the inner wall of the moving block 207 to adjust the distance between it and the fixing rod 301 to clamp the two ends of the crankshaft body 4; the left side of the slider 203 is provided with an inclined surface, and the top width of the slider 203 is greater than the bottom width, and when not subject to external force Under the influence of the above, the inclined surface on the right side of the shift block 206 remains in contact with the inclined surface at the top of the slider 203, and the spring A202 drives the slider 203, the connecting rod 204 and the clamping block 205 to remain in the lower state due to its own elastic force. The clamping block 205 is engaged with the clamping groove 209, so that the position of the movable rod 201 can be fixed, and the setting of multiple groups of clamping grooves 209 can enable the movable rod 201 to be moved to multiple positions for fixing; one end of the block 210 is conical, which can be inserted into the inner wall of one end of the crankshaft body 4 to fix it, and the middle part of the block 210 is disc-shaped and is provided with a rubber gasket, which can increase the friction between the crankshaft body 4 and improve the fixing effect.

[0023] like Figure 1 to Figure 2 As shown, the moving block 207 is slidably connected to the left inner wall of the base 1, the threaded rod 208 is threadedly connected to the inner wall of the moving block 207, the shift block 206 passes through and is slidably connected to the inner wall of the moving rod 201, one end of the spring A202 is fixedly connected to the outer wall of the slider 203, the other end of the spring A202 is fixedly connected to the inner wall of the moving rod 201, the clamping block 205 is slidably connected to the inner wall of the moving rod 201, and the clamping block 205 is clamped in the clamping slot 209.

[0024] The above scheme is adopted: by pressing the shift block 206, a squeezing force is generated on the slider 203, so that the slider 203 can move upward, and the spring A202 is forced to shrink. When the slider 203 moves upward, it can drive the connecting rod 204 and the block 205 to move upward synchronously, and break contact with the slot 209, so that the limit of the moving rod 201 can be released and the moving rod 201 can be moved. When the moving rod 201 moves to the point where the distance between it and the fixed rod 301 is roughly the same as the length of the crankshaft body 4, the elastic force of the spring A202 can drive the slider 203, the connecting rod 204 and the block 205 to move upward synchronously, and break contact with the slot 209. The movable rod 201 is moved downward and engaged with another set of slots 209 to fix the movable rod 201 and the movable block 207. At this time, the threaded rod 208 is rotated to drive the movable block 207 to move synchronously with the movable rod 201, and the distance between the movable rod 201 and the fixed rod 301 is adjusted so that the two can squeeze and clamp the crankshaft body 4. Therefore, by quickly adjusting the position of the movable rod 201 and then adjusting the position of the movable block 207, the crankshaft body 4 of different lengths can be clamped and fixed more accurately, without the need to loosen the bolts to move and then tighten the bolts to fix, which is more convenient and quick.

[0025] like Figure 3 to Figure 4 As shown, the fixing mechanism 3 includes a fixing rod 301, the inner wall of which is provided with a plurality of grooves 302, the inner wall of the fixing rod 301 is rotatably connected with a rocking arm 305, the left outer wall of the rocking arm 305 is fixedly connected with an insert block 304, the inner wall of the rocking arm 305 is elastically connected with a protrusion 303 through a spring B306, the fixing rod 301 is fixedly connected to the right outer wall of the base 1, the insert block 304 contacts the right inner wall of the crankshaft body 4, one end of the spring B306 is fixedly connected to the inner wall of the rocking arm 305, the other end of the spring B306 is fixedly connected to the outer wall of the protrusion 303, the protrusion 303 is slidably connected to the inner wall of the rocking arm 305, and the protrusion 303 is snap-fitted with the groove 302.

[0026] The above scheme is adopted: the plug block 304 is square, and a groove corresponding to the plug block 304 is opened at one end of the crankshaft body 4. By inserting the plug block 304 into the groove of the crankshaft body 4, one end of the crankshaft body 4 contacts the outer wall of the fixing rod 301, so that the crankshaft body 4 can be fixed, and the rocker 305 can be shaken to drive the crankshaft body 4 to rotate, so as to measure different parts of the crankshaft body 4; the protrusion 303 is hemispherical, and the arc surface of the protrusion 303 contacts the inner wall of the groove 302. In the process of shaking the rocker 305, the inner wall of the groove 302 squeezes the arc surface of the protrusion 303, so that the protrusion 303 moves inward along the inner wall of the rocker 305. When it is rotated to a certain angle, the protrusion 303 pops out due to the elastic force of the spring B306 and engages with the groove 302, which can play a certain fixing effect on the rocker 305, thereby turning the crankshaft body 4 over and fixing it.

[0027] The working principle and use process of this utility model:

[0028] When it is necessary to clamp and fix the crankshaft body 4, the operator can first press the shift block 206 to force the slider 203 to move upward, and the block 205 can be disengaged from the slot 209, so that the movable rod 201 can be moved to the left, so that the distance between the movable rod 201 and the fixed rod 301 becomes longer, and then release the shift block 206, so that the spring A202 drives the slider 203, the connecting rod 204 and the block 205 to move downward due to the elastic force, and engage with the corresponding slot 209, so that the movable rod 201 can be fixed, and then the end of the crankshaft body 4 with a square groove is inserted into the insertion block 304, so that one end of the crankshaft body 4 contacts the fixed rod 301, and then according to the length of the crankshaft body 4, the shift block 206 is pressed and the movable rod 201 is moved to the stop block 210 and inserted into the inner wall of the other end of the crankshaft body 4, and the movable rod 201 is moved to the approximate position for preliminary fixation.

[0029] Then, the shift block 206 can be loosened to relatively fix the moving rod 201 and the moving block 207, and then the threaded rod 208 can be rotated to drive the moving block 207 and the moving rod 201 to move simultaneously. When the moving rod 201 moves to the point where the rubber gasket on the outer wall of the stopper 210 is completely in contact with the other end of the crankshaft body 4, the two ends of the crankshaft body 4 can be clamped and fixed by the stopper 210 and the fixed rod 301. Therefore, the approximate position of the moving rod 201 can be quickly adjusted, and then the precise position of the moving rod 201 can be adjusted by rotating the threaded rod 208. It can be quickly adjusted and adapted to crankshaft bodies 4 of different lengths. There is no need to loosen the bolts to adjust the position of the clamp and then tighten the bolts to clamp and fix it, which is more convenient and quick.

[0030] When it is necessary to rotate the crankshaft body 4 to measure other parts, the operator can first rotate the threaded rod 208 in the opposite direction with a small amplitude, so that the movable rod 201 moves to the side away from the fixed rod 301, and the rubber gasket on the stopper 210 is out of contact with one end of the crankshaft body 4, but the conical part of the stopper 210 is still plugged into the crankshaft body 4. At this time, the rocker 305 can be rotated to make the arc surface of the protrusion 303 move inward along the inner wall of the rocker 305 by the force squeezed by the inner wall of the groove 302. The crankshaft body 4 can be driven to rotate synchronously by the rotation of the plug 304 to perform measurement. When the crankshaft body 4 rotates to a suitable position, the protrusion 303 pops out due to the elastic force of the spring B306 and engages with the corresponding groove 302, which can play a certain fixing effect on the rocker 305. At this time, rotating the threaded rod 208 in a small amplitude again can fix the stopper 210 to the crankshaft body 4, thereby rotating, tilting and fixing the crankshaft body 4. The operator does not need to support the workpiece all the time after rotating the crankshaft body 4 to maintain the tilted state for measurement, which is more convenient to use.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crankshaft measuring fixture, comprising a base (1), characterized in that: An adjustment mechanism (2) is provided on the inner wall of the top end of the base (1); The adjusting mechanism (2) comprises a moving block (207), the inner wall of the moving block (207) is provided with a plurality of groups of slots (209), the inner wall of the bottom end of the base (1) is rotatably connected to a threaded rod (208), the inner wall of the moving block (207) is slidably connected to a moving rod (201), the inner wall of the moving rod (201) is elastically connected to a slider (203) via a spring A (202), the left outer wall of the slider (203) is slidably connected to a shifting block (206), the bottom outer wall of the slider (203) is fixedly connected to a connecting rod (204), the bottom outer wall of the connecting rod (204) is fixedly connected to a locking block (205), the right outer wall of the moving rod (201) is fixedly connected to a stopper (210), the outer wall of the stopper (210) contacts a crankshaft body (4), and the right outer wall of the base (1) is provided with a fixing mechanism (3).

2. A crankshaft measuring fixture according to claim 1, characterized in that: The moving block (207) is slidably connected to the left inner wall of the base (1), the threaded rod (208) is threadedly connected to the inner wall of the moving block (207), and the shifting block (206) penetrates and is slidably connected to the inner wall of the moving rod (201).

3. A crankshaft measuring fixture according to claim 1, characterized in that: One end of the spring A (202) is fixedly connected to the outer wall of the slider (203), and the other end of the spring A (202) is fixedly connected to the inner wall of the moving rod (201).

4. A crankshaft measuring fixture according to claim 1, characterized in that: The clamping block (205) is slidably connected to the inner wall of the moving rod (201), and the clamping block (205) is clamped to the clamping groove (209).

5. A crankshaft measuring fixture according to claim 1, characterized in that: The fixing mechanism (3) comprises a fixing rod (301), the inner wall of the fixing rod (301) is provided with a plurality of grooves (302), the inner wall of the fixing rod (301) is rotatably connected to a rocking rod (305), the left outer wall of the rocking rod (305) is fixedly connected to an insert block (304), and the inner wall of the rocking rod (305) is elastically connected to a protrusion (303) via a spring B (306).

6. A crankshaft measuring fixture according to claim 5, characterized in that: The fixing rod (301) is fixedly connected to the right outer wall of the base (1), and the insert block (304) is in contact with the right inner wall of the crankshaft body (4).

7. A crankshaft measuring fixture according to claim 5, characterized in that: One end of the spring B (306) is fixedly connected to the inner wall of the rocker (305), and the other end of the spring B (306) is fixedly connected to the outer wall of the protrusion (303). The protrusion (303) is slidably connected to the inner wall of the rocker (305), and the protrusion (303) is snap-fitted to the groove (302).

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