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CN-116100466-B - Measurement and adjustment device for grinding eccentric quantity

CN116100466BCN 116100466 BCN116100466 BCN 116100466BCN-116100466-B

Abstract

The invention discloses a device for measuring and adjusting grinding eccentric quantity, which relates to the field of grinding and comprises an upper sliding block, a lower sliding block, a dial gauge, a transmission worm and a three-jaw chuck, wherein one side of the three-jaw chuck clamps and positions a workpiece to be measured, the other side of the three-jaw chuck is fixedly provided with the lower sliding block, the upper sliding block is arranged above the lower sliding block, the transmission worm is arranged in the upper sliding block in a relative rotating manner, the transmission worm and the lower sliding block are in threaded transmission, the dial gauge is arranged on the upper sliding block, a measuring head of the dial gauge is propped against the surface of the lower sliding block, a positioning rod is arranged on the upper sliding block, and the positioning rod is connected with a main shaft of a grinding machine through a magnetic clamp. The invention provides a magnetic type support grinding eccentric amount measuring and adjusting device which is simple in structure and easy to operate, and can be used for rapidly measuring a specific numerical value of the support grinding eccentric amount and adjusting the eccentric amount to a required numerical value by matching with a support block. The method is favorable for researching and analyzing grinding, and improves the quality of products and the analysis and research after the failure of the products.

Inventors

  • SUN MING
  • ZHANG XIA
  • GUO QIHUI
  • LI ZHONGYUE

Assignees

  • 浙江万向精工有限公司
  • 万向集团公司

Dates

Publication Date
20260505
Application Date
20230216

Claims (6)

  1. 1. A device for measuring and adjusting grinding eccentric quantity is characterized by comprising an upper sliding block (1), a lower sliding block (2), a dial indicator (6), a transmission worm (7) and a three-jaw chuck (9), wherein one side of the three-jaw chuck (9) is used for clamping and positioning a workpiece (11) to be measured through jaws, a chuck positioning block (13) is fixed on the other side of the three-jaw chuck (9), the lower sliding block (2) is fixed with the three-jaw chuck (9) through the chuck positioning block (13), the upper sliding block (1) is arranged above the lower sliding block (2), the transmission worm (7) is installed in the upper sliding block (1) in a relatively rotating manner, one end of the transmission worm (7) extends out of the upper sliding block (1), the other end of the transmission worm (7) is in threaded transmission with the lower sliding block (2), a guide hole (16) is formed in the lower sliding block (2), one end of a guide rod (4) is fixed in the upper sliding block (1), the other end of the guide rod (4) is supported in the guide hole (16), the transmission worm (7) drives the lower sliding block (2) to move relative to the upper sliding block (1), the guide rod (4) is used for carrying out guide measurement on the dial indicator (6) and is installed on the upper surface of the dial indicator (1), the device is used for measuring the moving distance of the lower sliding block (2) relative to the upper sliding block (1), a positioning rod (8) is arranged on the surface of the upper sliding block (1) deviating from the three-jaw chuck (9), the positioning rod (8) is connected with a main shaft of a grinding machine through a magnetic clamp (12), and when the upper sliding block (1) and the lower sliding block (2) are folded, the rotation center of a measured workpiece (11) coincides with the rotation center of the main shaft of the grinding machine.
  2. 2. The device for measuring and adjusting the grinding eccentric amount according to claim 1, wherein a baffle (10) is arranged at the position of the transmission worm (7) extending out of the upper sliding block (1), and the baffle (10) is used for limiting the stroke of the axial movement of the transmission worm (7).
  3. 3. The device for measuring and adjusting the grinding eccentricity according to claim 2, wherein the chuck positioning block (13) is fixed and positioned at a chuck center hole (14) of the three-jaw chuck (9) through a positioning column (15).
  4. 4. The device for measuring and adjusting the grinding eccentric amount according to claim 3, wherein the guide holes (16) are symmetrically formed on two sides of the lower slider (2), the sleeve-type linear ball bearings (3) are arranged in the guide holes (16) through clamp springs (5), and the guide rods (4) are supported by the sleeve-type linear ball bearings (3).
  5. 5. The device for measuring and adjusting the grinding eccentricity according to claim 4, wherein the positioning rod (8) is fixed on the upper slide block (1) through an axle center positioning block (17).
  6. 6. The device for measuring and adjusting the grinding eccentric amount according to claim 5, wherein the lower slider (2) is provided with an avoidance groove (18) at a position corresponding to the positioning rod (8).

Description

Measurement and adjustment device for grinding eccentric quantity Technical Field The invention relates to the field of grinding, in particular to a device for measuring and adjusting eccentric quantity of grinding. Background Grinding, also known as grinding, is a process commonly used in the machining arts. During the grinding process, the actual rotation center of the workpiece is deviated from the center of the main shaft by the eccentric amount. The existence of the eccentric quantity can reduce the grinding precision of the workpiece and influence the subsequent processing and use of the workpiece. In the bearing manufacturing industry, the adjustment and measurement of the eccentric amount of an electromagnetic coreless clamp are always an unresolved problem. The eccentric amount measurement has no special measuring tool at present, and is mainly re-measured by repeated debugging of an experienced operator, so that the traditional measurement method is very difficult and is difficult to obtain accurate values, and a lot of unnecessary troubles are brought to the work. The success rate of the manual adjustment process is low, the adjustment process time is long, and the overall efficiency is low. The actual eccentric amount can not be accurately controlled by manual adjustment, and can only be indirectly checked by trial grinding. The Chinese patent document (CN 205651220U) discloses an eccentric adjusting device of an electromagnetic coreless clamp of a bearing ring, which comprises a circular eccentric sleeve, a first positioning block fixedly connected to the eccentric sleeve, a circular eccentric ring connected with the eccentric sleeve, and a second positioning block fixedly connected to the eccentric ring, wherein the first positioning block comprises an eccentric sleeve connecting part and an adjusting part, a strip-shaped hole which is in sliding fit connection with the adjusting part a on the first positioning block is formed on the eccentric ring along the diameter direction, the second positioning block comprises an eccentric ring connecting part and an adjusting part b, and the eccentric amount of the eccentric ring relative to the eccentric sleeve can be conveniently adjusted by adjusting the distance between the first positioning block and the second positioning block, so that the eccentric amounts of two supporting blocks can be conveniently adjusted. However, this solution is only used for adjustment, which cannot be used for measuring the eccentric amount, and the structure is relatively complicated, the number of actuators to be fixed per adjustment is excessive, and the versatility and flexibility are poor due to the fact that the eccentric amount standard block and the standard measuring ferrule are to be manufactured. Disclosure of Invention The invention aims to overcome the defects in the prior art and provide a device for measuring and adjusting the grinding eccentric quantity, by which the specific numerical value of the grinding eccentric quantity can be rapidly measured and supported, and the eccentric quantity can be adjusted to a required numerical value by matching with a supporting block. The method is favorable for researching and analyzing grinding, and improves the quality of products and the analysis and research after the failure of the products. The eccentric amount measuring and adjusting device comprises an upper sliding block, a lower sliding block, a dial gauge, a transmission worm and a three-jaw chuck, wherein one side of the three-jaw chuck clamps and positions a measured workpiece through clamping jaws, a chuck positioning block is fixed on the other side of the three-jaw chuck, the lower sliding block is fixed with the three-jaw chuck through the chuck positioning block, the upper sliding block is arranged above the lower sliding block, the transmission worm is installed in the upper sliding block in a relatively rotating mode, one end of the transmission worm extends out of the upper sliding block, the other end of the transmission worm is in threaded transmission with the lower sliding block, a guide hole is formed in the lower sliding block, one end of a guide rod is fixed in the upper sliding block, the other end of the guide rod is supported in the guide hole, the transmission worm guides the lower sliding block to move relative to the upper sliding block, the dial gauge is installed on the upper sliding block, a measuring head of the dial gauge is propped against the surface of the lower sliding block and is used for measuring the moving distance of the lower sliding block relative to the upper sliding block, a positioning rod is installed on the surface of the upper sliding block, the positioning rod is connected with a grinding machine spindle through magnetic attraction, and when the upper sliding block and the lower sliding block are closed, the rotating center of the measured workpiece coincides with the rotating center of the grinding machine.