This standard specifies the nomenclature, terminology, technical requirements, test methods and inspection rules of bench vises. This standard applies to bench vises. QB/T 1558.1-1992 General Technical Requirements for Bench Vises QB/T1558.1-1992 Standard download decompression password: www.bzxz.net

Light Industry Industry Standard of the People's Republic of China
Bench Vice
Subject Content and Applicable Terms
General Technical Conditions
This standard specifies the nomenclature, terminology, technical requirements, test methods and inspection specifications of bench vices. This standard applies to bench vices.
2 Reference Standards
GB/T230Metal Grignard Hardness Test Method
GB/T2828Batch Inspection Count Sampling Procedure and Sampling Table (Applicable to Inspection of Continuous Batch) 3 Nomenclature
The nomenclature of bench vices is shown in Table 1.
Ordinary bench vise
utility bench vise
Channel steel bench vise
steel bench vise
Approved by the Ministry of Light Industry of the People's Republic of China on 1992-07-06
Implementation on 1993-03-01
4 Terminology
Guide rod bench vise
Bench vise with guiderod
Multi-purpose bench vise
Multi-purpose bench vise
Swallow tail bench vise
QB/T 1558.1-1992
Table 1 continued
Bench vise swallow tail type4.1
specification
The jaw width of the bench vise.
4.2 Backlash
The angle through which the screw rotates to eliminate the transmission gap when the movable vise moves. 4.3 Closing clearance The gap between the clamping surfaces of the two jaws when the bench vise is in the closed state. 4.4 Guide fit clearance The gap between the movable vise and the guide rail of the fixed vise. 4.5 Clamping forceWww.bzxZ.net
The force generated between the clamping surfaces of the two jaws when the bench vise is clamped. 5 Technical requirements
5.1 The casting of the bench vise should be flat and free of cracks. Porosity, sand holes and other defects on the outer surface that do not affect the performance are allowed to be repaired, but they should not affect the appearance quality.
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QB/T1558.1—1992
5.2 The paint film of the bench vise should not have obvious defects such as flow marks, paint leakage and different colors. 5.3 The iron hardness of the jaws should not be less than HRC45.5.4 The bench vise should be flexible to rotate and reliable to lock. 5.5 The movable jaw body moves flexibly within the full stroke, and there should be no local over-tightening. 5.6 The idle rotation amount of the bench vise should comply with the relevant product standards. The jaw closing gap should comply with the relevant product standards. 5.7
5.8 The guide rail clearance of the bench vise should comply with the relevant product standards. The clamping force of the bench vise should comply with the relevant product standards. 5.9
6 Test method
The basic dimensions of the bench vise are inspected with universal measuring tools. 6.2 The appearance quality of the bench vise is inspected by visual inspection. 6.3 The hardness test of the jaw iron shall be carried out on the clamping surface or adjacent side surface in accordance with the provisions of GB/T230. If a soft spot appears during the test, a point can be retested within a range of about 5mm around the soft spot. If the point is qualified, it is qualified. 6.4 The flexibility of the bench vise shall be tested by hand feel. 6.5 The idle rotation of the screw of the bench vise shall be tested with a special inspection tool. 6.6 The closure of the jaws shall be tested from the top of the jaws with a feeler gauge in the closed state. 6.7 The guide rail clearance of the bench vise shall be tested with a feeler gauge. If it is limited by the structure and cannot be tested with a feeler gauge, it is allowed to use a general measuring tool to measure the size of the containing part and the contained part, and the difference is the guide rail clearance. 6.8 The clamping force test shall be fixed on the inspection table, and the jaws shall be opened to half of the opening, and then the clamping force tester shall be placed in the middle of the jaw clamping surface and clamped. When the clamping force reaches the rated value, it shall be maintained for 3 minutes. After unloading, the bench vise should not have any phenomenon that affects the use.
7 Inspection rules
7.1 The bench vise shall be inspected and qualified before it can leave the factory. 7.2 The consignee may conduct random inspection on the bench vise according to the provisions of this standard. 7.3 The acceptance inspection shall be carried out according to the one-time sampling plan specified in GB/T2828. 7.4 The inspection items, qualified quality level (AQL) and inspection level (IL) of the acceptance inspection shall be in accordance with the provisions of Table 2. Table 2
Classification and grouping of non-conforming products
Note: ① The sample for the inspection of the iron hardness of the jaws is in blocks. ② Class C and Group I shall be judged by the number of non-conforming products.
Inspection items
Clamping force
Jaw hardness
Rotation flexibility
Movement flexibility
Closing distance
Guide rail clearance
Lost travel rotation
Paint film quality
Surface quality
Basic dimensions
Note transfer diagram
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Accepted quality level (AQL)
Inspection level (IL)
QB/T1558.1-1992
7.5 The manufacturer shall replace the unqualified products found in the delivery inspection. 7.6 The rejected batches after inspection can be re-selected or refurbished by the manufacturer and then submitted for acceptance. 7.7 The transfer rules specified in GB/T2828 shall be adopted in the inspection of consecutive batches. Additional Notes:
This standard was proposed by the Quality Standards Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Tool Hardware Standardization Center. This standard was drafted by the Shanghai Tool Industry Research Institute and assisted by the China Hardware Products Association's Bench Vise Branch. The main drafters of this standard are Lin Meide, Zhang Yuchang, and Wang Tao. 226
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