JB/T 9169.6-1998 Process management guidelines - Preparation of process quotas
Some standard content:
ICS25.010
Machinery Industry Standard of the People's Republic of China
JB/T9169.6-1998
Guide for technical management
Preparation of process quota
Guide for technical management-Preparation of norm of the total material consuptionand standard time in processing1998-11-16Published
National Bureau of Machinery Industry
1998-12-01Implementation
JB/T9169.61998
This standard is a revision of JB/Z338.1~338.1488 "Guide for process management". Only editorial revisions were made during the revision, and the main technical content remained unchanged.
This standard replaces JB/Z338.1~338.1488 from the date of implementation. All appendices to this standard are informative appendices. This standard is proposed and managed by the Mechanical Science Research Institute. The responsible drafting unit of this standard: Mechanical Science Research Institute. The main drafters of this standard: Ma Xianzhi, Li Qin, Shi Junwei, Wu Cheng, Du Shanyi. 1
1 Scope
Mechanical Industry Standard of the People's Republic of China
Guide for technological management
Preparation of technological quotas
Guide for technological managementPreparation of norm of the total material consuptionand standard time in processing This standard specifies the principles and methods for the preparation of material consumption technological quotas and labor consumption technological quotasJB/T9169.6—1998
Replaces JB/Z338.6—88
This standard applies to the preparation of material consumption technological quotas and labor consumption technological quotas (hereinafter referred to as labor quotas) for electromechanical products. 2 Preparation of material consumption process quotas
2.1 Scope of preparation of material consumption process quotas
Main materials constituting products and auxiliary materials required in the production process of products shall be prepared with consumption process quotas. 2.2 The preparation of material consumption process quotas shall fully consider the economical and reasonable use of materials, maximize the material utilization rate and reduce material consumption under the premise of ensuring product quality and process requirements. 2.3 Basis for preparation of material consumption process quotasa) Product parts list and product drawings
b) Parts process regulations:
) Relevant material standards, manuals and cutting standards 2.4 Preparation method of material consumption process quotas 2.4.1 Technical calculation method: According to the product part structure and process requirements, the net weight of the parts and the process loss in the manufacturing process are calculated by theoretical calculation method.
2.4.2 Actual measurement method: The material consumption process quota of each part is determined by actual weighing method. 2.4.3 Empirical statistical analysis method: Based on the actual material consumption statistics of similar parts, after analysis and comparison, determine the material consumption process quota of the parts.
2.5 Procedure for compiling the process quota of the main material consumption of the product using the technical calculation method. 2.5.1 Preparation of material consumption process quotas for machined parts and forgings of profiles, pipes and plates a) Calculate the gross weight of the parts based on the net weight of the parts in the product parts list or product drawings or the gross dimensions in the process specifications; b) Determine the material consumption process quotas for each type of parts. The determination method is shown in Appendix A (suggestive appendix); c) Calculate the material utilization rate of the parts (K)
Net weight of the parts
K=material consumption process quota of the parts
d) Fill in the product material consumption process quota list; e) Summarize the material consumption process quotas of each variety and specification of a single product: f) Calculate the material utilization rate of a single product;
Approved by the State Machinery Industry Bureau on November 16, 1998 and implemented on December 1, 1998
JB/T9169.6-1998
g) Fill in the summary table of material consumption process quotas for a single product: h) Review and approve.
2.5.2 Preparation of the process quota of casting material consumption and the process quota of metal furnace material consumption required for each ton of qualified castings 2.5.2.1 Preparation of the process quota of casting material consumption a) Calculate the gross weight of the casting:
b) Calculate the weight of the pouring and riser system:
c) Calculate the metal cutting rate:
Metal cutting rate of casting = gross weight of the same piece - net weight (100% gross weight
d) Fill in the detailed list of casting material consumption process quota; e) Review and approve.
2.5.2.2 Preparation of the process quota of metal furnace material consumption per ton of qualified castings a) Determine the technical and economic indicators of metal furnace material, see Appendix B (suggested appendix); b) Determine the process quota of a certain metal furnace material consumption required for each ton of qualified castings: The process quota of a certain metal furnace material consumption =
c) Fill in the detailed list of metal furnace material consumption process quota: d) Review and approve.
2.6 Modification of material consumption process quota
Material ratio
Finished casting rate
After the material consumption process quota is approved and implemented, it shall not be modified at will. If it is necessary to change the material consumption process quota due to product design, process changes or material quality, the process department shall fill in the process document change notification form, and the modification shall be made after the relevant departments sign and approve it.
3 Establishment of labor quota
3.1 Scope of establishment of labor quota
All types of work and positions that can calculate the assessment workload shall formulate labor quotas. 3.2 Forms of labor quotas
3.2.1 Time quota (man-hour quota), its composition is shown in Appendix C (suggested appendix). 3.2.2 Output quota: the number of qualified products completed in a unit of time. 3.3 Basic requirements for establishing labor quotas
Labor quotas should be established based on the production and technical conditions of the enterprise, so that most employees can achieve them through hard work, some advanced employees can exceed them, and a few employees can reach or approach the average advanced level through hard work. 3.4 Main basis for establishing labor quotas
a) Product drawings and process specifications:
b) Production type:
c) Enterprise's production technology level:
d) Quota standards or relevant information.
3.5 Methods for establishing labor quotas
3.5.1 Empirical estimation method
JB/T9169.6-1998
The labor quota is directly estimated by combining quota personnel, process personnel and workers, summarizing past experience and referring to relevant technical information.
3.5.2 Statistical Analysis Method
Conduct statistical analysis on the original records of the actual working hours consumed in the production of similar parts (or products) in the past period of time, and determine the labor quota of the part (or product) in combination with the current specific production conditions. 3.5.3 Analogy Comparison Method
Based on the labor quota of parts or processes of similar products, after comparative analysis, calculate the labor quota of the part or process. 3.5.4 Technical Measurement Method
Determine the labor quota by measuring and analyzing the actual operation time. 3.6 Revision of Labor Quota
3.6.1With the continuous improvement of the production and technical conditions of the enterprise, the labor quota should be revised regularly to maintain the average advanced level of the quota. 3.6.2 In batch production, if any of the following situations occurs, the labor quota should be modified in time: a) Modification of product design structure:
b) Modification of process method:
c) Change of raw materials or rough parts:
d) Change of equipment or process equipment:
e) Change of production organization form:
f) Change of production conditions, etc.
A1 Material selection method
JB/T9169.6-1998
Appendix A
(Suggested Appendix)
Method for determining the material consumption process quota for profile, pipe and plate machining parts and forgings
Based on the material range given in the material catalog and the law of the enterprise's feed size over the years, combined with the specific product situation, select a most economical and reasonable material size, and then arrange the materials of the selected size according to the rough parts and the cutting cut size, and allocate the remaining residual materials (which cannot be reused) to the material consumption process quota of the parts, that is, the following is obtained: residual weight
Part material consumption process quota = rough parts weight + cutting cut weight + number of pieces per material
This method is suitable for batch production products. A2 Cutting material utilization rate method
First, determine the group distance according to the material specifications, and after comprehensive measurement of the actual cutting of the material, calculate the cutting utilization rate of each material specification group distance, and then use the cutting utilization rate to calculate the part consumption process quota. The specific calculation method is as follows: a) Material utilization rate
The sum of the weight of a batch of parts
Obtain the total material consumption of the batch of parts
b) Part material consumption process quota
Material residual rate method
Parts gross weight
Material utilization rate
First determine the group distance according to the material specifications, and through the actual measurement of comprehensive cutting of the materials, calculate the cutting residual rates of various material specification group distances respectively, and then use the cutting residual rate to calculate the part material consumption process quota. The specific calculation method is as follows: Get the sum of the weight of the remaining scraps after a batch of parts are roughly broken a) Cutting scrap rate = more
Get the total weight of materials consumed by the rough breaking of this batch of parts (100%
parts rough weight + one cutting cut weight b) Part material consumption process quota =
1-cutting scrap rate
A4 Material comprehensive utilization rate method
When a certain material of the same specification can be used for multiple parts of a product or for parts of multiple products, a wider range of cutting can be used. In this case, the comprehensive utilization rate method is used to calculate the part material consumption. The material consumption process quota is relatively reasonable, and the specific calculation method is as follows: a) Comprehensive material utilization rate =
the sum of the net weight of the batch of partsWww.bzxZ.net
the total weight of the materials consumed by the batch of parts
b) Process quota of material consumption of parts
net weight of parts
comprehensive material utilization rate
(100%
JB/T9169.6-1998
Appendix B
(Suggested Appendix)
Technical and economic indicators and calculation methods of metal furnace chargesTechnical and economic indicators of metal furnace charges and calculation formulasFinished castings Weight
a) Casting finished product rate =
Metal charge weight
b) Recyclable rate =
Return charge weight
(100%
Metal charge weight
Metal charge weight-Finished casting weight-Return charge weight Non-recyclable rate =
Metal charge weight
Metal charge weight-Metal liquid weight
d) Furnace consumption rate =
(100%
Metal charge weight
E) Liquid metal recovery rate =
Liquid metal Weight
(100%
Metal charge weight
Metal charge weight
f) Ratio of metal charge to coke = year
Coke weight
C1 Single piece time (expressed by T)
Single piece time consists of the following parts:
JB/T9169.6-1998
Appendix C
(Suggested Appendix)
Composition of working time quota
a) Operation time (expressed by T): Time directly consumed in manufacturing products or parts and components. It is divided into basic time and auxiliary time. The basic time (expressed by T.) is the time consumed in the process of directly changing the size, shape, relative position, surface state or material properties of the production object, while the auxiliary time (expressed by T,) is the time consumed by various auxiliary actions that must be performed to realize the above process.
b) Workplace Arrangement Time (expressed by T): The time that workers need to take care of the workplace (such as lubricating machine tools, cleaning chips and collecting tools, etc.) to ensure normal processing, which is generally calculated as 2%~7% of the working time. c) Rest and Physiological Need Time (expressed by T): The time that workers spend in the work shift to restore physical strength and meet physiological needs, which is generally calculated as 2%~4% of the working time. If expressed by formula, then
T-T+T+T=T+T+T,+T
2 Preparation and Ending Time (abbreviated as Quasi-Ending Time, expressed by T.) 2
The time that workers need to prepare and end work in order to produce a batch of products or parts and components. If the number of pieces in each batch is n, the Quasi-Ending Time allocated to each part is T/n. C3 Single piece calculation time (expressed in T)
C3.1 In batch production:
TT,+TJ/n=T+T+T,+T+TJn
C3.2 In mass production, due to the large value of n, T/n0, can be ignored, so: T=T,=-T,+T,+T,+T,
People's Republic of China
Mechanical Industry Standard
Process Management Guidelines Process Quota Preparation
JB/T9169.6-1998
Mechanical Science Research Institute Published and distributed
Printed by the Mechanical Science Research Institute
(No. 2, Shouti South Road, Beijing
100044)
Word count XXXXXX
Format 880×1230
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Edition X, XX, 19XX
Printing, XX, XX, 19XX
Print run 1-XXX
Price XXX.XX Yuan
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Mechanical Industry Standard Service Network: 8661_969166-1998
Appendix C
(Suggested Appendix)
Composition of the standard working hours
a) Operation time (expressed by T): The time directly used to manufacture products or parts and components. It is divided into two parts: basic time and auxiliary time. The basic time (expressed by T.) is the time directly used to change the size, shape, relative position, surface state or material properties of the production object, while the auxiliary time (expressed by T,) is the time consumed by various auxiliary actions that must be performed to achieve the above process.
b) Workplace arrangement time (expressed by T): The time required for workers to take care of the workplace (such as lubricating machine tools, cleaning chips and collecting tools, etc.) to ensure normal processing, which is generally calculated as 2%~7% of the operation time. c) Rest and physiological needs time (expressed by T): The time consumed by workers to restore physical strength and meet physiological needs during the work shift, which is generally calculated as 2%~4% of the operation time. If expressed in a formula, then
T-T+T+T=T+T+T,+T
2 Preparation and finishing time (abbreviated as quasi-final time, represented by T.)2
The time it takes for workers to prepare and finish work in order to produce a batch of products or parts and components. If the number of pieces in each batch is n, the quasi-final time allocated to each part is T/n. C3 Single piece calculation time (expressed in T)
C3.1 In batch production:
TT,+TJ/n=T+T+T,+T+TJn
C3.2 In mass production, due to the large value of n, T/n0, can be ignored, so: T=T,=-T,+T,+T,+T,
People's Republic of China
Mechanical Industry Standard
Process Management Guidelines Process Quota Preparation
JB/T9169.6-1998
Mechanical Science Research Institute Published and distributed
Printed by the Mechanical Science Research Institute
(No. 2, Shouti South Road, Beijing
100044)
Word count XXXXXX
Format 880×1230
1/16 Printing sheet X/X
Edition X, XX, 19XX
Printing, XX, XX, 19XX
Print run 1-XXX
Price XXX.XX Yuan
XX-XXX
Mechanical Industry Standard Service Network: 8661_969166-1998
Appendix C
(Suggested Appendix)
Composition of the standard working hours
a) Operation time (expressed by T): The time directly used to manufacture products or parts and components. It is divided into two parts: basic time and auxiliary time. The basic time (expressed by T.) is the time directly used to change the size, shape, relative position, surface state or material properties of the production object, while the auxiliary time (expressed by T,) is the time consumed by various auxiliary actions that must be performed to achieve the above process.
b) Workplace arrangement time (expressed by T): The time required for workers to take care of the workplace (such as lubricating machine tools, cleaning chips and collecting tools, etc.) to ensure normal processing, which is generally calculated as 2%~7% of the operation time. c) Rest and physiological needs time (expressed by T): The time consumed by workers to restore physical strength and meet physiological needs during the work shift, which is generally calculated as 2%~4% of the operation time. If expressed in a formula, then
T-T+T+T=T+T+T,+T
2 Preparation and finishing time (abbreviated as quasi-final time, represented by T.)2
The time it takes for workers to prepare and finish work in order to produce a batch of products or parts and components. If the number of pieces in each batch is n, the quasi-final time allocated to each part is T/n. C3 Single piece calculation time (expressed in T)
C3.1 In batch production:
TT,+TJ/n=T+T+T,+T+TJn
C3.2 In mass production, due to the large value of n, T/n0, can be ignored, so: T=T,=-T,+T,+T,+T,
People's Republic of China
Mechanical Industry Standard
Process Management Guidelines Process Quota Preparation
JB/T9169.6-1998
Mechanical Science Research Institute Published and distributed
Printed by the Mechanical Science Research Institute
(No. 2, Shouti South Road, Beijing
100044)
Word count XXXXXX
Format 880×1230
1/16 Printing sheet X/X
Edition X, XX, 19XX
Printing, XX, XX, 19XX
Print run 1-XXX
Price XXX.XX Yuan
XX-XXX
Mechanical Industry Standard Service Network: 8661_96916
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